musl: update to 1.1.12 + git from 2016-01-22

Signed-off-by: Felix Fietkau <[email protected]>

SVN-Revision: 48486

toolchain/musl/Config.version

@@ -3,6 +3,6 @@ if USE_MUSL
 config MUSL_VERSION
 	string
 	depends on USE_MUSL
-	default "1.1.11"
+	default "1.1.12"
 
 endif

toolchain/musl/common.mk

@@ -11,7 +11,7 @@ PKG_NAME:=musl
 PKG_VERSION:=$(call qstrip,$(CONFIG_MUSL_VERSION))
 PKG_RELEASE=1
 
-PKG_MD5SUM:=48be0777e32f374d387e9cf85e36ec4d
+PKG_MD5SUM:=42875e0c111aa1cb9d08663f8d42c799
 
 PKG_SOURCE_URL:=http://www.musl-libc.org/releases
 PKG_SOURCE:=$(PKG_NAME)-$(PKG_VERSION).tar.gz

toolchain/musl/patches/000-update-to-git-2016-01-22.patch

@@ -0,0 +1,7636 @@
+--- a/.gitignore
++++ b/.gitignore
+@@ -5,9 +5,6 @@
+ *.so.1
+ arch/*/bits/alltypes.h
+ config.mak
+-include/bits
+-tools/musl-gcc
+-tools/musl-clang
+-tools/ld.musl-clang
+ lib/musl-gcc.specs
+ src/internal/version.h
++/obj/
+--- a/Makefile
++++ b/Makefile
+@@ -8,6 +8,7 @@
+ # Do not make changes here.
+ #
+ 
++srcdir = .
+ exec_prefix = /usr/local
+ bindir = $(exec_prefix)/bin
+ 
+@@ -16,31 +17,38 @@ includedir = $(prefix)/include
+ libdir = $(prefix)/lib
+ syslibdir = /lib
+ 
+-SRCS = $(sort $(wildcard src/*/*.c arch/$(ARCH)/src/*.c))
+-OBJS = $(SRCS:.c=.o)
++BASE_SRCS = $(sort $(wildcard $(srcdir)/src/*/*.c $(srcdir)/arch/$(ARCH)/src/*.[csS]))
++BASE_OBJS = $(patsubst $(srcdir)/%,%.o,$(basename $(BASE_SRCS)))
++ARCH_SRCS = $(wildcard $(srcdir)/src/*/$(ARCH)/*.[csS])
++ARCH_OBJS = $(patsubst $(srcdir)/%,%.o,$(basename $(ARCH_SRCS)))
++REPLACED_OBJS = $(sort $(subst /$(ARCH)/,/,$(ARCH_OBJS)))
++OBJS = $(addprefix obj/, $(filter-out $(REPLACED_OBJS), $(sort $(BASE_OBJS) $(ARCH_OBJS))))
+ LOBJS = $(OBJS:.o=.lo)
+-GENH = include/bits/alltypes.h
+-GENH_INT = src/internal/version.h
+-IMPH = src/internal/stdio_impl.h src/internal/pthread_impl.h src/internal/libc.h
++GENH = obj/include/bits/alltypes.h
++GENH_INT = obj/src/internal/version.h
++IMPH = $(addprefix $(srcdir)/, src/internal/stdio_impl.h src/internal/pthread_impl.h src/internal/libc.h)
+ 
+-LDFLAGS = 
++LDFLAGS =
++LDFLAGS_AUTO =
+ LIBCC = -lgcc
+ CPPFLAGS =
+-CFLAGS = -Os -pipe
++CFLAGS =
++CFLAGS_AUTO = -Os -pipe
+ CFLAGS_C99FSE = -std=c99 -ffreestanding -nostdinc 
+ 
+ CFLAGS_ALL = $(CFLAGS_C99FSE)
+-CFLAGS_ALL += -D_XOPEN_SOURCE=700 -I./arch/$(ARCH) -I./src/internal -I./include
+-CFLAGS_ALL += $(CPPFLAGS) $(CFLAGS)
+-CFLAGS_ALL_STATIC = $(CFLAGS_ALL)
+-CFLAGS_ALL_SHARED = $(CFLAGS_ALL) -fPIC -DSHARED
++CFLAGS_ALL += -D_XOPEN_SOURCE=700 -I$(srcdir)/arch/$(ARCH) -Iobj/src/internal -I$(srcdir)/src/internal -Iobj/include -I$(srcdir)/include
++CFLAGS_ALL += $(CPPFLAGS) $(CFLAGS_AUTO) $(CFLAGS)
++
++LDFLAGS_ALL = $(LDFLAGS_AUTO) $(LDFLAGS)
+ 
+ AR      = $(CROSS_COMPILE)ar
+ RANLIB  = $(CROSS_COMPILE)ranlib
+-INSTALL = ./tools/install.sh
++INSTALL = $(srcdir)/tools/install.sh
+ 
+-ARCH_INCLUDES = $(wildcard arch/$(ARCH)/bits/*.h)
+-ALL_INCLUDES = $(sort $(wildcard include/*.h include/*/*.h) $(GENH) $(ARCH_INCLUDES:arch/$(ARCH)/%=include/%))
++ARCH_INCLUDES = $(wildcard $(srcdir)/arch/$(ARCH)/bits/*.h)
++INCLUDES = $(wildcard $(srcdir)/include/*.h $(srcdir)/include/*/*.h)
++ALL_INCLUDES = $(sort $(INCLUDES:$(srcdir)/%=%) $(GENH:obj/%=%) $(ARCH_INCLUDES:$(srcdir)/arch/$(ARCH)/%=include/%))
+ 
+ EMPTY_LIB_NAMES = m rt pthread crypt util xnet resolv dl
+ EMPTY_LIBS = $(EMPTY_LIB_NAMES:%=lib/lib%.a)
+@@ -49,7 +57,7 @@ STATIC_LIBS = lib/libc.a
+ SHARED_LIBS = lib/libc.so
+ TOOL_LIBS = lib/musl-gcc.specs
+ ALL_LIBS = $(CRT_LIBS) $(STATIC_LIBS) $(SHARED_LIBS) $(EMPTY_LIBS) $(TOOL_LIBS)
+-ALL_TOOLS = tools/musl-gcc
++ALL_TOOLS = obj/musl-gcc
+ 
+ WRAPCC_GCC = gcc
+ WRAPCC_CLANG = clang
+@@ -58,95 +66,93 @@ LDSO_PATHNAME = $(syslibdir)/ld-musl-$(A
+ 
+ -include config.mak
+ 
++ifeq ($(ARCH),)
++$(error Please set ARCH in config.mak before running make.)
++endif
++
+ all: $(ALL_LIBS) $(ALL_TOOLS)
+ 
++OBJ_DIRS = $(sort $(patsubst %/,%,$(dir $(ALL_LIBS) $(ALL_TOOLS) $(OBJS) $(GENH) $(GENH_INT))) $(addprefix obj/, crt crt/$(ARCH) include))
++
++$(ALL_LIBS) $(ALL_TOOLS) $(CRT_LIBS:lib/%=obj/crt/%) $(OBJS) $(LOBJS) $(GENH) $(GENH_INT): | $(OBJ_DIRS)
++
++$(OBJ_DIRS):
++	mkdir -p $@
++
+ install: install-libs install-headers install-tools
+ 
+ clean:
+-	rm -f crt/*.o
+-	rm -f $(OBJS)
+-	rm -f $(LOBJS)
+-	rm -f $(ALL_LIBS) lib/*.[ao] lib/*.so
+-	rm -f $(ALL_TOOLS)
+-	rm -f $(GENH) $(GENH_INT)
+-	rm -f include/bits
++	rm -rf obj lib
+ 
+ distclean: clean
+ 	rm -f config.mak
+ 
+-include/bits:
+-	@test "$(ARCH)" || { echo "Please set ARCH in config.mak before running make." ; exit 1 ; }
+-	ln -sf ../arch/$(ARCH)/bits $@
++obj/include/bits/alltypes.h: $(srcdir)/arch/$(ARCH)/bits/alltypes.h.in $(srcdir)/include/alltypes.h.in $(srcdir)/tools/mkalltypes.sed
++	sed -f $(srcdir)/tools/mkalltypes.sed $(srcdir)/arch/$(ARCH)/bits/alltypes.h.in $(srcdir)/include/alltypes.h.in > $@
+ 
+-include/bits/alltypes.h.in: include/bits
++obj/src/internal/version.h: $(wildcard $(srcdir)/VERSION $(srcdir)/.git)
++	printf '#define VERSION "%s"\n' "$$(cd $(srcdir); sh tools/version.sh)" > $@
+ 
+-include/bits/alltypes.h: include/bits/alltypes.h.in include/alltypes.h.in tools/mkalltypes.sed
+-	sed -f tools/mkalltypes.sed include/bits/alltypes.h.in include/alltypes.h.in > $@
++obj/src/internal/version.o obj/src/internal/version.lo: obj/src/internal/version.h
+ 
+-src/internal/version.h: $(wildcard VERSION .git)
+-	printf '#define VERSION "%s"\n' "$$(sh tools/version.sh)" > $@
++obj/crt/rcrt1.o obj/src/ldso/dlstart.lo obj/src/ldso/dynlink.lo: $(srcdir)/src/internal/dynlink.h $(srcdir)/arch/$(ARCH)/reloc.h
+ 
+-src/internal/version.lo: src/internal/version.h
++obj/crt/crt1.o obj/crt/scrt1.o obj/crt/rcrt1.o obj/src/ldso/dlstart.lo: $(srcdir)/arch/$(ARCH)/crt_arch.h
+ 
+-crt/rcrt1.o src/ldso/dlstart.lo src/ldso/dynlink.lo: src/internal/dynlink.h arch/$(ARCH)/reloc.h
++obj/crt/rcrt1.o: $(srcdir)/src/ldso/dlstart.c
+ 
+-crt/crt1.o crt/Scrt1.o crt/rcrt1.o src/ldso/dlstart.lo: $(wildcard arch/$(ARCH)/crt_arch.h)
++obj/crt/Scrt1.o obj/crt/rcrt1.o: CFLAGS_ALL += -fPIC
+ 
+-crt/rcrt1.o: src/ldso/dlstart.c
++obj/crt/$(ARCH)/crti.o: $(srcdir)/crt/$(ARCH)/crti.s
+ 
+-crt/Scrt1.o crt/rcrt1.o: CFLAGS += -fPIC
++obj/crt/$(ARCH)/crtn.o: $(srcdir)/crt/$(ARCH)/crtn.s
+ 
+-OPTIMIZE_SRCS = $(wildcard $(OPTIMIZE_GLOBS:%=src/%))
+-$(OPTIMIZE_SRCS:%.c=%.o) $(OPTIMIZE_SRCS:%.c=%.lo): CFLAGS += -O3
++OPTIMIZE_SRCS = $(wildcard $(OPTIMIZE_GLOBS:%=$(srcdir)/src/%))
++$(OPTIMIZE_SRCS:$(srcdir)/%.c=obj/%.o) $(OPTIMIZE_SRCS:$(srcdir)/%.c=obj/%.lo): CFLAGS += -O3
+ 
+ MEMOPS_SRCS = src/string/memcpy.c src/string/memmove.c src/string/memcmp.c src/string/memset.c
+-$(MEMOPS_SRCS:%.c=%.o) $(MEMOPS_SRCS:%.c=%.lo): CFLAGS += $(CFLAGS_MEMOPS)
++$(MEMOPS_SRCS:%.c=obj/%.o) $(MEMOPS_SRCS:%.c=obj/%.lo): CFLAGS_ALL += $(CFLAGS_MEMOPS)
+ 
+ NOSSP_SRCS = $(wildcard crt/*.c) \
+ 	src/env/__libc_start_main.c src/env/__init_tls.c \
+ 	src/thread/__set_thread_area.c src/env/__stack_chk_fail.c \
+ 	src/string/memset.c src/string/memcpy.c \
+ 	src/ldso/dlstart.c src/ldso/dynlink.c
+-$(NOSSP_SRCS:%.c=%.o) $(NOSSP_SRCS:%.c=%.lo): CFLAGS += $(CFLAGS_NOSSP)
++$(NOSSP_SRCS:%.c=obj/%.o) $(NOSSP_SRCS:%.c=obj/%.lo): CFLAGS_ALL += $(CFLAGS_NOSSP)
++
++$(CRT_LIBS:lib/%=obj/crt/%): CFLAGS_ALL += -DCRT
+ 
+-$(CRT_LIBS:lib/%=crt/%): CFLAGS += -DCRT
++$(LOBJS): CFLAGS_ALL += -fPIC -DSHARED
+ 
+-# This incantation ensures that changes to any subarch asm files will
+-# force the corresponding object file to be rebuilt, even if the implicit
+-# rule below goes indirectly through a .sub file.
+-define mkasmdep
+-$(dir $(patsubst %/,%,$(dir $(1))))$(notdir $(1:.s=.o)): $(1)
+-endef
+-$(foreach s,$(wildcard src/*/$(ARCH)*/*.s),$(eval $(call mkasmdep,$(s))))
++CC_CMD = $(CC) $(CFLAGS_ALL) -c -o $@ $<
+ 
+ # Choose invocation of assembler to be used
+-# $(1) is input file, $(2) is output file, $(3) is assembler flags
+ ifeq ($(ADD_CFI),yes)
+-	AS_CMD = LC_ALL=C awk -f tools/add-cfi.common.awk -f tools/add-cfi.$(ARCH).awk $< | $(CC) -x assembler -c -o $@ -
++	AS_CMD = LC_ALL=C awk -f $(srcdir)/tools/add-cfi.common.awk -f $(srcdir)/tools/add-cfi.$(ARCH).awk $< | $(CC) $(CFLAGS_ALL) -x assembler -c -o $@ -
+ else
+-	AS_CMD = $(CC) -c -o $@ $<
++	AS_CMD = $(CC_CMD)
+ endif
+ 
+-%.o: $(ARCH)$(ASMSUBARCH)/%.sub
+-	$(CC) $(CFLAGS_ALL_STATIC) -c -o $@ $(dir $<)$(shell cat $<)
++obj/%.o: $(srcdir)/%.s
++	$(AS_CMD)
+ 
+-%.o: $(ARCH)/%.s
+-	$(AS_CMD) $(CFLAGS_ALL_STATIC)
++obj/%.o: $(srcdir)/%.S
++	$(CC_CMD)
+ 
+-%.o: %.c $(GENH) $(IMPH)
+-	$(CC) $(CFLAGS_ALL_STATIC) -c -o $@ $<
++obj/%.o: $(srcdir)/%.c $(GENH) $(IMPH)
++	$(CC_CMD)
+ 
+-%.lo: $(ARCH)$(ASMSUBARCH)/%.sub
+-	$(CC) $(CFLAGS_ALL_SHARED) -c -o $@ $(dir $<)$(shell cat $<)
++obj/%.lo: $(srcdir)/%.s
++	$(AS_CMD)
+ 
+-%.lo: $(ARCH)/%.s
+-	$(AS_CMD) $(CFLAGS_ALL_SHARED)
++obj/%.lo: $(srcdir)/%.S
++	$(CC_CMD)
+ 
+-%.lo: %.c $(GENH) $(IMPH)
+-	$(CC) $(CFLAGS_ALL_SHARED) -c -o $@ $<
++obj/%.lo: $(srcdir)/%.c $(GENH) $(IMPH)
++	$(CC_CMD)
+ 
+ lib/libc.so: $(LOBJS)
+-	$(CC) $(CFLAGS_ALL_SHARED) $(LDFLAGS) -nostdlib -shared \
++	$(CC) $(CFLAGS_ALL) $(LDFLAGS_ALL) -nostdlib -shared \
+ 	-Wl,-e,_dlstart -Wl,-Bsymbolic-functions \
+ 	-o $@ $(LOBJS) $(LIBCC)
+ 
+@@ -159,21 +165,27 @@ $(EMPTY_LIBS):
+ 	rm -f $@
+ 	$(AR) rc $@
+ 
+-lib/%.o: crt/%.o
++lib/%.o: obj/crt/%.o
+ 	cp $< $@
+ 
+-lib/musl-gcc.specs: tools/musl-gcc.specs.sh config.mak
++lib/crti.o: obj/crt/$(ARCH)/crti.o
++	cp $< $@
++
++lib/crtn.o: obj/crt/$(ARCH)/crtn.o
++	cp $< $@
++
++lib/musl-gcc.specs: $(srcdir)/tools/musl-gcc.specs.sh config.mak
+ 	sh $< "$(includedir)" "$(libdir)" "$(LDSO_PATHNAME)" > $@
+ 
+-tools/musl-gcc: config.mak
++obj/musl-gcc: config.mak
+ 	printf '#!/bin/sh\nexec "$${REALGCC:-$(WRAPCC_GCC)}" "$$@" -specs "%s/musl-gcc.specs"\n' "$(libdir)" > $@
+ 	chmod +x $@
+ 
+-tools/%-clang: tools/%-clang.in config.mak
++obj/%-clang: $(srcdir)/tools/%-clang.in config.mak
+ 	sed -e 's!@CC@!$(WRAPCC_CLANG)!g' -e 's!@PREFIX@!$(prefix)!g' -e 's!@INCDIR@!$(includedir)!g' -e 's!@LIBDIR@!$(libdir)!g' -e 's!@LDSO@!$(LDSO_PATHNAME)!g' $< > $@
+ 	chmod +x $@
+ 
+-$(DESTDIR)$(bindir)/%: tools/%
++$(DESTDIR)$(bindir)/%: obj/%
+ 	$(INSTALL) -D $< $@
+ 
+ $(DESTDIR)$(libdir)/%.so: lib/%.so
+@@ -182,10 +194,13 @@ $(DESTDIR)$(libdir)/%.so: lib/%.so
+ $(DESTDIR)$(libdir)/%: lib/%
+ 	$(INSTALL) -D -m 644 $< $@
+ 
+-$(DESTDIR)$(includedir)/bits/%: arch/$(ARCH)/bits/%
++$(DESTDIR)$(includedir)/bits/%: $(srcdir)/arch/$(ARCH)/bits/%
++	$(INSTALL) -D -m 644 $< $@
++
++$(DESTDIR)$(includedir)/bits/%: obj/include/bits/%
+ 	$(INSTALL) -D -m 644 $< $@
+ 
+-$(DESTDIR)$(includedir)/%: include/%
++$(DESTDIR)$(includedir)/%: $(srcdir)/include/%
+ 	$(INSTALL) -D -m 644 $< $@
+ 
+ $(DESTDIR)$(LDSO_PATHNAME): $(DESTDIR)$(libdir)/libc.so
+@@ -195,12 +210,12 @@ install-libs: $(ALL_LIBS:lib/%=$(DESTDIR
+ 
+ install-headers: $(ALL_INCLUDES:include/%=$(DESTDIR)$(includedir)/%)
+ 
+-install-tools: $(ALL_TOOLS:tools/%=$(DESTDIR)$(bindir)/%)
++install-tools: $(ALL_TOOLS:obj/%=$(DESTDIR)$(bindir)/%)
+ 
+ musl-git-%.tar.gz: .git
+-	 git archive --format=tar.gz --prefix=$(patsubst %.tar.gz,%,$@)/ -o $@ $(patsubst musl-git-%.tar.gz,%,$@)
++	 git --git-dir=$(srcdir)/.git archive --format=tar.gz --prefix=$(patsubst %.tar.gz,%,$@)/ -o $@ $(patsubst musl-git-%.tar.gz,%,$@)
+ 
+ musl-%.tar.gz: .git
+-	 git archive --format=tar.gz --prefix=$(patsubst %.tar.gz,%,$@)/ -o $@ v$(patsubst musl-%.tar.gz,%,$@)
++	 git --git-dir=$(srcdir)/.git archive --format=tar.gz --prefix=$(patsubst %.tar.gz,%,$@)/ -o $@ v$(patsubst musl-%.tar.gz,%,$@)
+ 
+ .PHONY: all clean install install-libs install-headers install-tools
+--- a/arch/aarch64/atomic.h
++++ /dev/null
+@@ -1,206 +0,0 @@
+-#ifndef _INTERNAL_ATOMIC_H
+-#define _INTERNAL_ATOMIC_H
+-
+-#include <stdint.h>
+-
+-static inline int a_ctz_64(uint64_t x)
+-{
+-	__asm__(
+-		"	rbit %0, %1\n"
+-		"	clz %0, %0\n"
+-		: "=r"(x) : "r"(x));
+-	return x;
+-}
+-
+-static inline int a_ctz_l(unsigned long x)
+-{
+-	return a_ctz_64(x);
+-}
+-
+-static inline void a_barrier()
+-{
+-	__asm__ __volatile__("dmb ish");
+-}
+-
+-static inline void *a_cas_p(volatile void *p, void *t, void *s)
+-{
+-	void *old;
+-	__asm__ __volatile__(
+-		"	dmb ish\n"
+-		"1:	ldxr %0,%3\n"
+-		"	cmp %0,%1\n"
+-		"	b.ne 1f\n"
+-		"	stxr %w0,%2,%3\n"
+-		"	cbnz %w0,1b\n"
+-		"	mov %0,%1\n"
+-		"1:	dmb ish\n"
+-		: "=&r"(old)
+-		: "r"(t), "r"(s), "Q"(*(long*)p)
+-		: "memory", "cc");
+-	return old;
+-}
+-
+-static inline int a_cas(volatile int *p, int t, int s)
+-{
+-	int old;
+-	__asm__ __volatile__(
+-		"	dmb ish\n"
+-		"1:	ldxr %w0,%3\n"
+-		"	cmp %w0,%w1\n"
+-		"	b.ne 1f\n"
+-		"	stxr %w0,%w2,%3\n"
+-		"	cbnz %w0,1b\n"
+-		"	mov %w0,%w1\n"
+-		"1:	dmb ish\n"
+-		: "=&r"(old)
+-		: "r"(t), "r"(s), "Q"(*p)
+-		: "memory", "cc");
+-	return old;
+-}
+-
+-static inline int a_swap(volatile int *x, int v)
+-{
+-	int old, tmp;
+-	__asm__ __volatile__(
+-		"	dmb ish\n"
+-		"1:	ldxr %w0,%3\n"
+-		"	stxr %w1,%w2,%3\n"
+-		"	cbnz %w1,1b\n"
+-		"	dmb ish\n"
+-		: "=&r"(old), "=&r"(tmp)
+-		: "r"(v), "Q"(*x)
+-		: "memory", "cc" );
+-	return old;
+-}
+-
+-static inline int a_fetch_add(volatile int *x, int v)
+-{
+-	int old, tmp;
+-	__asm__ __volatile__(
+-		"	dmb ish\n"
+-		"1:	ldxr %w0,%3\n"
+-		"	add %w0,%w0,%w2\n"
+-		"	stxr %w1,%w0,%3\n"
+-		"	cbnz %w1,1b\n"
+-		"	dmb ish\n"
+-		: "=&r"(old), "=&r"(tmp)
+-		: "r"(v), "Q"(*x)
+-		: "memory", "cc" );
+-	return old-v;
+-}
+-
+-static inline void a_inc(volatile int *x)
+-{
+-	int tmp, tmp2;
+-	__asm__ __volatile__(
+-		"	dmb ish\n"
+-		"1:	ldxr %w0,%2\n"
+-		"	add %w0,%w0,#1\n"
+-		"	stxr %w1,%w0,%2\n"
+-		"	cbnz %w1,1b\n"
+-		"	dmb ish\n"
+-		: "=&r"(tmp), "=&r"(tmp2)
+-		: "Q"(*x)
+-		: "memory", "cc" );
+-}
+-
+-static inline void a_dec(volatile int *x)
+-{
+-	int tmp, tmp2;
+-	__asm__ __volatile__(
+-		"	dmb ish\n"
+-		"1:	ldxr %w0,%2\n"
+-		"	sub %w0,%w0,#1\n"
+-		"	stxr %w1,%w0,%2\n"
+-		"	cbnz %w1,1b\n"
+-		"	dmb ish\n"
+-		: "=&r"(tmp), "=&r"(tmp2)
+-		: "Q"(*x)
+-		: "memory", "cc" );
+-}
+-
+-static inline void a_and_64(volatile uint64_t *p, uint64_t v)
+-{
+-	int tmp, tmp2;
+-	__asm__ __volatile__(
+-		"	dmb ish\n"
+-		"1:	ldxr %0,%3\n"
+-		"	and %0,%0,%2\n"
+-		"	stxr %w1,%0,%3\n"
+-		"	cbnz %w1,1b\n"
+-		"	dmb ish\n"
+-		: "=&r"(tmp), "=&r"(tmp2)
+-		: "r"(v), "Q"(*p)
+-		: "memory", "cc" );
+-}
+-
+-static inline void a_and(volatile int *p, int v)
+-{
+-	int tmp, tmp2;
+-	__asm__ __volatile__(
+-		"	dmb ish\n"
+-		"1:	ldxr %w0,%3\n"
+-		"	and %w0,%w0,%w2\n"
+-		"	stxr %w1,%w0,%3\n"
+-		"	cbnz %w1,1b\n"
+-		"	dmb ish\n"
+-		: "=&r"(tmp), "=&r"(tmp2)
+-		: "r"(v), "Q"(*p)
+-		: "memory", "cc" );
+-}
+-
+-static inline void a_or_64(volatile uint64_t *p, uint64_t v)
+-{
+-	int tmp, tmp2;
+-	__asm__ __volatile__(
+-		"	dmb ish\n"
+-		"1:	ldxr %0,%3\n"
+-		"	orr %0,%0,%2\n"
+-		"	stxr %w1,%0,%3\n"
+-		"	cbnz %w1,1b\n"
+-		"	dmb ish\n"
+-		: "=&r"(tmp), "=&r"(tmp2)
+-		: "r"(v), "Q"(*p)
+-		: "memory", "cc" );
+-}
+-
+-static inline void a_or_l(volatile void *p, long v)
+-{
+-	return a_or_64(p, v);
+-}
+-
+-static inline void a_or(volatile int *p, int v)
+-{
+-	int tmp, tmp2;
+-	__asm__ __volatile__(
+-		"	dmb ish\n"
+-		"1:	ldxr %w0,%3\n"
+-		"	orr %w0,%w0,%w2\n"
+-		"	stxr %w1,%w0,%3\n"
+-		"	cbnz %w1,1b\n"
+-		"	dmb ish\n"
+-		: "=&r"(tmp), "=&r"(tmp2)
+-		: "r"(v), "Q"(*p)
+-		: "memory", "cc" );
+-}
+-
+-static inline void a_store(volatile int *p, int x)
+-{
+-	__asm__ __volatile__(
+-		"	dmb ish\n"
+-		"	str %w1,%0\n"
+-		"	dmb ish\n"
+-		: "=m"(*p)
+-		: "r"(x)
+-		: "memory", "cc" );
+-}
+-
+-#define a_spin a_barrier
+-
+-static inline void a_crash()
+-{
+-	*(volatile char *)0=0;
+-}
+-
+-
+-#endif
+--- /dev/null
++++ b/arch/aarch64/atomic_arch.h
+@@ -0,0 +1,53 @@
++#define a_ll a_ll
++static inline int a_ll(volatile int *p)
++{
++	int v;
++	__asm__ __volatile__ ("ldxr %0, %1" : "=r"(v) : "Q"(*p));
++	return v;
++}
++
++#define a_sc a_sc
++static inline int a_sc(volatile int *p, int v)
++{
++	int r;
++	__asm__ __volatile__ ("stxr %w0,%1,%2" : "=&r"(r) : "r"(v), "Q"(*p) : "memory");
++	return !r;
++}
++
++#define a_barrier a_barrier
++static inline void a_barrier()
++{
++	__asm__ __volatile__ ("dmb ish" : : : "memory");
++}
++
++#define a_pre_llsc a_barrier
++#define a_post_llsc a_barrier
++
++#define a_cas_p a_cas_p
++static inline void *a_cas_p(volatile void *p, void *t, void *s)
++{
++	void *old;
++	__asm__ __volatile__(
++		"	dmb ish\n"
++		"1:	ldxr %0,%3\n"
++		"	cmp %0,%1\n"
++		"	b.ne 1f\n"
++		"	stxr %w0,%2,%3\n"
++		"	cbnz %w0,1b\n"
++		"	mov %0,%1\n"
++		"1:	dmb ish\n"
++		: "=&r"(old)
++		: "r"(t), "r"(s), "Q"(*(void *volatile *)p)
++		: "memory", "cc");
++	return old;
++}
++
++#define a_ctz_64 a_ctz_64
++static inline int a_ctz_64(uint64_t x)
++{
++	__asm__(
++		"	rbit %0, %1\n"
++		"	clz %0, %0\n"
++		: "=r"(x) : "r"(x));
++	return x;
++}
+--- a/arch/aarch64/pthread_arch.h
++++ b/arch/aarch64/pthread_arch.h
+@@ -8,4 +8,4 @@ static inline struct pthread *__pthread_
+ #define TLS_ABOVE_TP
+ #define TP_ADJ(p) ((char *)(p) + sizeof(struct pthread) - 16)
+ 
+-#define CANCEL_REG_IP 33
++#define MC_PC pc
+--- a/arch/arm/atomic.h
++++ /dev/null
+@@ -1,261 +0,0 @@
+-#ifndef _INTERNAL_ATOMIC_H
+-#define _INTERNAL_ATOMIC_H
+-
+-#include <stdint.h>
+-
+-static inline int a_ctz_l(unsigned long x)
+-{
+-	static const char debruijn32[32] = {
+-		0, 1, 23, 2, 29, 24, 19, 3, 30, 27, 25, 11, 20, 8, 4, 13,
+-		31, 22, 28, 18, 26, 10, 7, 12, 21, 17, 9, 6, 16, 5, 15, 14
+-	};
+-	return debruijn32[(x&-x)*0x076be629 >> 27];
+-}
+-
+-static inline int a_ctz_64(uint64_t x)
+-{
+-	uint32_t y = x;
+-	if (!y) {
+-		y = x>>32;
+-		return 32 + a_ctz_l(y);
+-	}
+-	return a_ctz_l(y);
+-}
+-
+-#if __ARM_ARCH_7A__ || __ARM_ARCH_7R__ ||  __ARM_ARCH >= 7
+-
+-static inline void a_barrier()
+-{
+-	__asm__ __volatile__("dmb ish");
+-}
+-
+-static inline int a_cas(volatile int *p, int t, int s)
+-{
+-	int old;
+-	__asm__ __volatile__(
+-		"	dmb ish\n"
+-		"1:	ldrex %0,%3\n"
+-		"	cmp %0,%1\n"
+-		"	bne 1f\n"
+-		"	strex %0,%2,%3\n"
+-		"	cmp %0, #0\n"
+-		"	bne 1b\n"
+-		"	mov %0, %1\n"
+-		"1:	dmb ish\n"
+-		: "=&r"(old)
+-		: "r"(t), "r"(s), "Q"(*p)
+-		: "memory", "cc" );
+-	return old;
+-}
+-
+-static inline int a_swap(volatile int *x, int v)
+-{
+-	int old, tmp;
+-	__asm__ __volatile__(
+-		"	dmb ish\n"
+-		"1:	ldrex %0,%3\n"
+-		"	strex %1,%2,%3\n"
+-		"	cmp %1, #0\n"
+-		"	bne 1b\n"
+-		"	dmb ish\n"
+-		: "=&r"(old), "=&r"(tmp)
+-		: "r"(v), "Q"(*x)
+-		: "memory", "cc" );
+-	return old;
+-}
+-
+-static inline int a_fetch_add(volatile int *x, int v)
+-{
+-	int old, tmp;
+-	__asm__ __volatile__(
+-		"	dmb ish\n"
+-		"1:	ldrex %0,%3\n"
+-		"	add %0,%0,%2\n"
+-		"	strex %1,%0,%3\n"
+-		"	cmp %1, #0\n"
+-		"	bne 1b\n"
+-		"	dmb ish\n"
+-		: "=&r"(old), "=&r"(tmp)
+-		: "r"(v), "Q"(*x)
+-		: "memory", "cc" );
+-	return old-v;
+-}
+-
+-static inline void a_inc(volatile int *x)
+-{
+-	int tmp, tmp2;
+-	__asm__ __volatile__(
+-		"	dmb ish\n"
+-		"1:	ldrex %0,%2\n"
+-		"	add %0,%0,#1\n"
+-		"	strex %1,%0,%2\n"
+-		"	cmp %1, #0\n"
+-		"	bne 1b\n"
+-		"	dmb ish\n"
+-		: "=&r"(tmp), "=&r"(tmp2)
+-		: "Q"(*x)
+-		: "memory", "cc" );
+-}
+-
+-static inline void a_dec(volatile int *x)
+-{
+-	int tmp, tmp2;
+-	__asm__ __volatile__(
+-		"	dmb ish\n"
+-		"1:	ldrex %0,%2\n"
+-		"	sub %0,%0,#1\n"
+-		"	strex %1,%0,%2\n"
+-		"	cmp %1, #0\n"
+-		"	bne 1b\n"
+-		"	dmb ish\n"
+-		: "=&r"(tmp), "=&r"(tmp2)
+-		: "Q"(*x)
+-		: "memory", "cc" );
+-}
+-
+-static inline void a_and(volatile int *x, int v)
+-{
+-	int tmp, tmp2;
+-	__asm__ __volatile__(
+-		"	dmb ish\n"
+-		"1:	ldrex %0,%3\n"
+-		"	and %0,%0,%2\n"
+-		"	strex %1,%0,%3\n"
+-		"	cmp %1, #0\n"
+-		"	bne 1b\n"
+-		"	dmb ish\n"
+-		: "=&r"(tmp), "=&r"(tmp2)
+-		: "r"(v), "Q"(*x)
+-		: "memory", "cc" );
+-}
+-
+-static inline void a_or(volatile int *x, int v)
+-{
+-	int tmp, tmp2;
+-	__asm__ __volatile__(
+-		"	dmb ish\n"
+-		"1:	ldrex %0,%3\n"
+-		"	orr %0,%0,%2\n"
+-		"	strex %1,%0,%3\n"
+-		"	cmp %1, #0\n"
+-		"	bne 1b\n"
+-		"	dmb ish\n"
+-		: "=&r"(tmp), "=&r"(tmp2)
+-		: "r"(v), "Q"(*x)
+-		: "memory", "cc" );
+-}
+-
+-static inline void a_store(volatile int *p, int x)
+-{
+-	__asm__ __volatile__(
+-		"	dmb ish\n"
+-		"	str %1,%0\n"
+-		"	dmb ish\n"
+-		: "=m"(*p)
+-		: "r"(x)
+-		: "memory", "cc" );
+-}
+-
+-#else
+-
+-int __a_cas(int, int, volatile int *) __attribute__((__visibility__("hidden")));
+-#define __k_cas __a_cas
+-
+-static inline void a_barrier()
+-{
+-	__asm__ __volatile__("bl __a_barrier"
+-		: : : "memory", "cc", "ip", "lr" );
+-}
+-
+-static inline int a_cas(volatile int *p, int t, int s)
+-{
+-	int old;
+-	for (;;) {
+-		if (!__k_cas(t, s, p))
+-			return t;
+-		if ((old=*p) != t)
+-			return old;
+-	}
+-}
+-
+-static inline int a_swap(volatile int *x, int v)
+-{
+-	int old;
+-	do old = *x;
+-	while (__k_cas(old, v, x));
+-	return old;
+-}
+-
+-static inline int a_fetch_add(volatile int *x, int v)
+-{
+-	int old;
+-	do old = *x;
+-	while (__k_cas(old, old+v, x));
+-	return old;
+-}
+-
+-static inline void a_inc(volatile int *x)
+-{
+-	a_fetch_add(x, 1);
+-}
+-
+-static inline void a_dec(volatile int *x)
+-{
+-	a_fetch_add(x, -1);
+-}
+-
+-static inline void a_store(volatile int *p, int x)
+-{
+-	a_barrier();
+-	*p = x;
+-	a_barrier();
+-}
+-
+-static inline void a_and(volatile int *p, int v)
+-{
+-	int old;
+-	do old = *p;
+-	while (__k_cas(old, old&v, p));
+-}
+-
+-static inline void a_or(volatile int *p, int v)
+-{
+-	int old;
+-	do old = *p;
+-	while (__k_cas(old, old|v, p));
+-}
+-
+-#endif
+-
+-static inline void *a_cas_p(volatile void *p, void *t, void *s)
+-{
+-	return (void *)a_cas(p, (int)t, (int)s);
+-}
+-
+-#define a_spin a_barrier
+-
+-static inline void a_crash()
+-{
+-	*(volatile char *)0=0;
+-}
+-
+-static inline void a_or_l(volatile void *p, long v)
+-{
+-	a_or(p, v);
+-}
+-
+-static inline void a_and_64(volatile uint64_t *p, uint64_t v)
+-{
+-	union { uint64_t v; uint32_t r[2]; } u = { v };
+-	a_and((int *)p, u.r[0]);
+-	a_and((int *)p+1, u.r[1]);
+-}
+-
+-static inline void a_or_64(volatile uint64_t *p, uint64_t v)
+-{
+-	union { uint64_t v; uint32_t r[2]; } u = { v };
+-	a_or((int *)p, u.r[0]);
+-	a_or((int *)p+1, u.r[1]);
+-}
+-
+-#endif
+--- /dev/null
++++ b/arch/arm/atomic_arch.h
+@@ -0,0 +1,64 @@
++__attribute__((__visibility__("hidden")))
++extern const void *__arm_atomics[3]; /* gettp, cas, barrier */
++
++#if ((__ARM_ARCH_6__ || __ARM_ARCH_6K__ || __ARM_ARCH_6ZK__) && !__thumb__) \
++ || __ARM_ARCH_7A__ || __ARM_ARCH_7R__ ||  __ARM_ARCH >= 7
++
++#define a_ll a_ll
++static inline int a_ll(volatile int *p)
++{
++	int v;
++	__asm__ __volatile__ ("ldrex %0, %1" : "=r"(v) : "Q"(*p));
++	return v;
++}
++
++#define a_sc a_sc
++static inline int a_sc(volatile int *p, int v)
++{
++	int r;
++	__asm__ __volatile__ ("strex %0,%1,%2" : "=&r"(r) : "r"(v), "Q"(*p) : "memory");
++	return !r;
++}
++
++#if __ARM_ARCH_7A__ || __ARM_ARCH_7R__ ||  __ARM_ARCH >= 7
++
++#define a_barrier a_barrier
++static inline void a_barrier()
++{
++	__asm__ __volatile__ ("dmb ish" : : : "memory");
++}
++
++#endif
++
++#define a_pre_llsc a_barrier
++#define a_post_llsc a_barrier
++
++#else
++
++#define a_cas a_cas
++static inline int a_cas(volatile int *p, int t, int s)
++{
++	for (;;) {
++		register int r0 __asm__("r0") = t;
++		register int r1 __asm__("r1") = s;
++		register volatile int *r2 __asm__("r2") = p;
++		int old;
++		__asm__ __volatile__ (
++			"bl __a_cas"
++			: "+r"(r0) : "r"(r1), "r"(r2)
++			: "memory", "r3", "lr", "ip", "cc" );
++		if (!r0) return t;
++		if ((old=*p)!=t) return old;
++	}
++}
++
++#endif
++
++#ifndef a_barrier
++#define a_barrier a_barrier
++static inline void a_barrier()
++{
++	__asm__ __volatile__("bl __a_barrier"
++		: : : "memory", "cc", "ip", "lr" );
++}
++#endif
+--- a/arch/arm/pthread_arch.h
++++ b/arch/arm/pthread_arch.h
+@@ -27,4 +27,4 @@ static inline pthread_t __pthread_self()
+ #define TLS_ABOVE_TP
+ #define TP_ADJ(p) ((char *)(p) + sizeof(struct pthread) - 8)
+ 
+-#define CANCEL_REG_IP 18
++#define MC_PC arm_pc
+--- a/arch/arm/reloc.h
++++ b/arch/arm/reloc.h
+@@ -6,10 +6,10 @@
+ #define ENDIAN_SUFFIX ""
+ #endif
+ 
+-#if __SOFTFP__
+-#define FP_SUFFIX ""
+-#else
++#if __ARM_PCS_VFP
+ #define FP_SUFFIX "hf"
++#else
++#define FP_SUFFIX ""
+ #endif
+ 
+ #define LDSO_ARCH "arm" ENDIAN_SUFFIX FP_SUFFIX
+@@ -28,10 +28,5 @@
+ #define REL_TPOFF       R_ARM_TLS_TPOFF32
+ //#define REL_TLSDESC     R_ARM_TLS_DESC
+ 
+-#ifdef __thumb__
+ #define CRTJMP(pc,sp) __asm__ __volatile__( \
+ 	"mov sp,%1 ; bx %0" : : "r"(pc), "r"(sp) : "memory" )
+-#else
+-#define CRTJMP(pc,sp) __asm__ __volatile__( \
+-	"mov sp,%1 ; tst %0,#1 ; moveq pc,%0 ; bx %0" : : "r"(pc), "r"(sp) : "memory" )
+-#endif
+--- a/arch/arm/src/__aeabi_atexit.c
++++ /dev/null
+@@ -1,6 +0,0 @@
+-int __cxa_atexit(void (*func)(void *), void *arg, void *dso);
+-
+-int __aeabi_atexit (void *obj, void (*func) (void *), void *d)
+-{
+-	return __cxa_atexit (func, obj, d);
+-}
+--- a/arch/arm/src/__aeabi_memclr.c
++++ /dev/null
+@@ -1,9 +0,0 @@
+-#include <string.h>
+-#include "libc.h"
+-
+-void __aeabi_memclr(void *dest, size_t n)
+-{
+-	memset(dest, 0, n);
+-}
+-weak_alias(__aeabi_memclr, __aeabi_memclr4);
+-weak_alias(__aeabi_memclr, __aeabi_memclr8);
+--- a/arch/arm/src/__aeabi_memcpy.c
++++ /dev/null
+@@ -1,9 +0,0 @@
+-#include <string.h>
+-#include "libc.h"
+-
+-void __aeabi_memcpy(void *restrict dest, const void *restrict src, size_t n)
+-{
+-	memcpy(dest, src, n);
+-}
+-weak_alias(__aeabi_memcpy, __aeabi_memcpy4);
+-weak_alias(__aeabi_memcpy, __aeabi_memcpy8);
+--- a/arch/arm/src/__aeabi_memmove.c
++++ /dev/null
+@@ -1,9 +0,0 @@
+-#include <string.h>
+-#include "libc.h"
+-
+-void __aeabi_memmove(void *dest, const void *src, size_t n)
+-{
+-	memmove(dest, src, n);
+-}
+-weak_alias(__aeabi_memmove, __aeabi_memmove4);
+-weak_alias(__aeabi_memmove, __aeabi_memmove8);
+--- a/arch/arm/src/__aeabi_memset.c
++++ /dev/null
+@@ -1,9 +0,0 @@
+-#include <string.h>
+-#include "libc.h"
+-
+-void __aeabi_memset(void *dest, size_t n, int c)
+-{
+-	memset(dest, c, n);
+-}
+-weak_alias(__aeabi_memset, __aeabi_memset4);
+-weak_alias(__aeabi_memset, __aeabi_memset8);
+--- a/arch/arm/src/__set_thread_area.c
++++ /dev/null
+@@ -1,49 +0,0 @@
+-#include <stdint.h>
+-#include <elf.h>
+-#include "pthread_impl.h"
+-#include "libc.h"
+-
+-#define HWCAP_TLS (1 << 15)
+-
+-extern const unsigned char __attribute__((__visibility__("hidden")))
+-	__a_barrier_dummy[], __a_barrier_oldkuser[],
+-	__a_barrier_v6[], __a_barrier_v7[],
+-	__a_cas_dummy[], __a_cas_v6[], __a_cas_v7[],
+-	__a_gettp_dummy[];
+-
+-#define __a_barrier_kuser 0xffff0fa0
+-#define __a_cas_kuser 0xffff0fc0
+-#define __a_gettp_kuser 0xffff0fe0
+-
+-extern uintptr_t __attribute__((__visibility__("hidden")))
+-	__a_barrier_ptr, __a_cas_ptr, __a_gettp_ptr;
+-
+-#define SET(op,ver) (__a_##op##_ptr = \
+-	(uintptr_t)__a_##op##_##ver - (uintptr_t)__a_##op##_dummy)
+-
+-int __set_thread_area(void *p)
+-{
+-#if !__ARM_ARCH_7A__ && !__ARM_ARCH_7R__ && __ARM_ARCH < 7
+-	if (__hwcap & HWCAP_TLS) {
+-		size_t *aux;
+-		SET(cas, v7);
+-		SET(barrier, v7);
+-		for (aux=libc.auxv; *aux; aux+=2) {
+-			if (*aux != AT_PLATFORM) continue;
+-			const char *s = (void *)aux[1];
+-			if (s[0]!='v' || s[1]!='6' || s[2]-'0'<10u) break;
+-			SET(cas, v6);
+-			SET(barrier, v6);
+-			break;
+-		}
+-	} else {
+-		int ver = *(int *)0xffff0ffc;
+-		SET(gettp, kuser);
+-		SET(cas, kuser);
+-		SET(barrier, kuser);
+-		if (ver < 2) a_crash();
+-		if (ver < 3) SET(barrier, oldkuser);
+-	}
+-#endif
+-	return __syscall(0xf0005, p);
+-}
+--- a/arch/arm/src/arm/atomics.s
++++ /dev/null
+@@ -1,116 +0,0 @@
+-.text
+-
+-.global __a_barrier
+-.hidden __a_barrier
+-.type __a_barrier,%function
+-__a_barrier:
+-	ldr ip,1f
+-	ldr ip,[pc,ip]
+-	add pc,pc,ip
+-1:	.word __a_barrier_ptr-1b
+-.global __a_barrier_dummy
+-.hidden __a_barrier_dummy
+-__a_barrier_dummy:
+-	tst lr,#1
+-	moveq pc,lr
+-	bx lr
+-.global __a_barrier_oldkuser
+-.hidden __a_barrier_oldkuser
+-__a_barrier_oldkuser:
+-	push {r0,r1,r2,r3,ip,lr}
+-	mov r1,r0
+-	mov r2,sp
+-	ldr ip,=0xffff0fc0
+-	mov lr,pc
+-	mov pc,ip
+-	pop {r0,r1,r2,r3,ip,lr}
+-	tst lr,#1
+-	moveq pc,lr
+-	bx lr
+-.global __a_barrier_v6
+-.hidden __a_barrier_v6
+-__a_barrier_v6:
+-	mcr p15,0,r0,c7,c10,5
+-	bx lr
+-.global __a_barrier_v7
+-.hidden __a_barrier_v7
+-__a_barrier_v7:
+-	.word 0xf57ff05b        /* dmb ish */
+-	bx lr
+-
+-.global __a_cas
+-.hidden __a_cas
+-.type __a_cas,%function
+-__a_cas:
+-	ldr ip,1f
+-	ldr ip,[pc,ip]
+-	add pc,pc,ip
+-1:	.word __a_cas_ptr-1b
+-.global __a_cas_dummy
+-.hidden __a_cas_dummy
+-__a_cas_dummy:
+-	mov r3,r0
+-	ldr r0,[r2]
+-	subs r0,r3,r0
+-	streq r1,[r2]
+-	tst lr,#1
+-	moveq pc,lr
+-	bx lr
+-.global __a_cas_v6
+-.hidden __a_cas_v6
+-__a_cas_v6:
+-	mov r3,r0
+-	mcr p15,0,r0,c7,c10,5
+-1:	.word 0xe1920f9f        /* ldrex r0,[r2] */
+-	subs r0,r3,r0
+-	.word 0x01820f91        /* strexeq r0,r1,[r2] */
+-	teqeq r0,#1
+-	beq 1b
+-	mcr p15,0,r0,c7,c10,5
+-	bx lr
+-.global __a_cas_v7
+-.hidden __a_cas_v7
+-__a_cas_v7:
+-	mov r3,r0
+-	.word 0xf57ff05b        /* dmb ish */
+-1:	.word 0xe1920f9f        /* ldrex r0,[r2] */
+-	subs r0,r3,r0
+-	.word 0x01820f91        /* strexeq r0,r1,[r2] */
+-	teqeq r0,#1
+-	beq 1b
+-	.word 0xf57ff05b        /* dmb ish */
+-	bx lr
+-
+-.global __aeabi_read_tp
+-.type __aeabi_read_tp,%function
+-__aeabi_read_tp:
+-
+-.global __a_gettp
+-.hidden __a_gettp
+-.type __a_gettp,%function
+-__a_gettp:
+-	ldr r0,1f
+-	ldr r0,[pc,r0]
+-	add pc,pc,r0
+-1:	.word __a_gettp_ptr-1b
+-.global __a_gettp_dummy
+-.hidden __a_gettp_dummy
+-__a_gettp_dummy:
+-	mrc p15,0,r0,c13,c0,3
+-	bx lr
+-
+-.data
+-.global __a_barrier_ptr
+-.hidden __a_barrier_ptr
+-__a_barrier_ptr:
+-	.word 0
+-
+-.global __a_cas_ptr
+-.hidden __a_cas_ptr
+-__a_cas_ptr:
+-	.word 0
+-
+-.global __a_gettp_ptr
+-.hidden __a_gettp_ptr
+-__a_gettp_ptr:
+-	.word 0
+--- a/arch/arm/src/find_exidx.c
++++ /dev/null
+@@ -1,42 +0,0 @@
+-#define _GNU_SOURCE
+-#include <link.h>
+-#include <stdint.h>
+-
+-struct find_exidx_data {
+-	uintptr_t pc, exidx_start;
+-	int exidx_len;
+-};
+-
+-static int find_exidx(struct dl_phdr_info *info, size_t size, void *ptr)
+-{
+-	struct find_exidx_data *data = ptr;
+-	const ElfW(Phdr) *phdr = info->dlpi_phdr;
+-	uintptr_t addr, exidx_start = 0;
+-	int i, match = 0, exidx_len = 0;
+-
+-	for (i = info->dlpi_phnum; i > 0; i--, phdr++) {
+-		addr = info->dlpi_addr + phdr->p_vaddr;
+-		switch (phdr->p_type) {
+-		case PT_LOAD:
+-			match |= data->pc >= addr && data->pc < addr + phdr->p_memsz;
+-			break;
+-		case PT_ARM_EXIDX:
+-			exidx_start = addr;
+-			exidx_len = phdr->p_memsz;
+-			break;
+-		}
+-	}
+-	data->exidx_start = exidx_start;
+-	data->exidx_len = exidx_len;
+-	return match;
+-}
+-
+-uintptr_t __gnu_Unwind_Find_exidx(uintptr_t pc, int *pcount)
+-{
+-	struct find_exidx_data data;
+-	data.pc = pc;
+-	if (dl_iterate_phdr(find_exidx, &data) <= 0)
+-		return 0;
+-	*pcount = data.exidx_len / 8;
+-	return data.exidx_start;
+-}
+--- a/arch/i386/atomic.h
++++ /dev/null
+@@ -1,110 +0,0 @@
+-#ifndef _INTERNAL_ATOMIC_H
+-#define _INTERNAL_ATOMIC_H
+-
+-#include <stdint.h>
+-
+-static inline int a_ctz_64(uint64_t x)
+-{
+-	int r;
+-	__asm__( "bsf %1,%0 ; jnz 1f ; bsf %2,%0 ; addl $32,%0\n1:"
+-		: "=&r"(r) : "r"((unsigned)x), "r"((unsigned)(x>>32)) );
+-	return r;
+-}
+-
+-static inline int a_ctz_l(unsigned long x)
+-{
+-	long r;
+-	__asm__( "bsf %1,%0" : "=r"(r) : "r"(x) );
+-	return r;
+-}
+-
+-static inline void a_and_64(volatile uint64_t *p, uint64_t v)
+-{
+-	__asm__( "lock ; andl %1, (%0) ; lock ; andl %2, 4(%0)"
+-		: : "r"((long *)p), "r"((unsigned)v), "r"((unsigned)(v>>32)) : "memory" );
+-}
+-
+-static inline void a_or_64(volatile uint64_t *p, uint64_t v)
+-{
+-	__asm__( "lock ; orl %1, (%0) ; lock ; orl %2, 4(%0)"
+-		: : "r"((long *)p), "r"((unsigned)v), "r"((unsigned)(v>>32)) : "memory" );
+-}
+-
+-static inline void a_or_l(volatile void *p, long v)
+-{
+-	__asm__( "lock ; orl %1, %0"
+-		: "=m"(*(long *)p) : "r"(v) : "memory" );
+-}
+-
+-static inline void *a_cas_p(volatile void *p, void *t, void *s)
+-{
+-	__asm__( "lock ; cmpxchg %3, %1"
+-		: "=a"(t), "=m"(*(long *)p) : "a"(t), "r"(s) : "memory" );
+-	return t;
+-}
+-
+-static inline int a_cas(volatile int *p, int t, int s)
+-{
+-	__asm__( "lock ; cmpxchg %3, %1"
+-		: "=a"(t), "=m"(*p) : "a"(t), "r"(s) : "memory" );
+-	return t;
+-}
+-
+-static inline void a_or(volatile int *p, int v)
+-{
+-	__asm__( "lock ; orl %1, %0"
+-		: "=m"(*p) : "r"(v) : "memory" );
+-}
+-
+-static inline void a_and(volatile int *p, int v)
+-{
+-	__asm__( "lock ; andl %1, %0"
+-		: "=m"(*p) : "r"(v) : "memory" );
+-}
+-
+-static inline int a_swap(volatile int *x, int v)
+-{
+-	__asm__( "xchg %0, %1" : "=r"(v), "=m"(*x) : "0"(v) : "memory" );
+-	return v;
+-}
+-
+-#define a_xchg a_swap
+-
+-static inline int a_fetch_add(volatile int *x, int v)
+-{
+-	__asm__( "lock ; xadd %0, %1" : "=r"(v), "=m"(*x) : "0"(v) : "memory" );
+-	return v;
+-}
+-
+-static inline void a_inc(volatile int *x)
+-{
+-	__asm__( "lock ; incl %0" : "=m"(*x) : "m"(*x) : "memory" );
+-}
+-
+-static inline void a_dec(volatile int *x)
+-{
+-	__asm__( "lock ; decl %0" : "=m"(*x) : "m"(*x) : "memory" );
+-}
+-
+-static inline void a_store(volatile int *p, int x)
+-{
+-	__asm__( "movl %1, %0 ; lock ; orl $0,(%%esp)" : "=m"(*p) : "r"(x) : "memory" );
+-}
+-
+-static inline void a_spin()
+-{
+-	__asm__ __volatile__( "pause" : : : "memory" );
+-}
+-
+-static inline void a_barrier()
+-{
+-	__asm__ __volatile__( "" : : : "memory" );
+-}
+-
+-static inline void a_crash()
+-{
+-	__asm__ __volatile__( "hlt" : : : "memory" );
+-}
+-
+-
+-#endif
+--- /dev/null
++++ b/arch/i386/atomic_arch.h
+@@ -0,0 +1,109 @@
++#define a_ctz_64 a_ctz_64
++static inline int a_ctz_64(uint64_t x)
++{
++	int r;
++	__asm__( "bsf %1,%0 ; jnz 1f ; bsf %2,%0 ; addl $32,%0\n1:"
++		: "=&r"(r) : "r"((unsigned)x), "r"((unsigned)(x>>32)) );
++	return r;
++}
++
++#define a_ctz_l a_ctz_l
++static inline int a_ctz_l(unsigned long x)
++{
++	long r;
++	__asm__( "bsf %1,%0" : "=r"(r) : "r"(x) );
++	return r;
++}
++
++#define a_and_64 a_and_64
++static inline void a_and_64(volatile uint64_t *p, uint64_t v)
++{
++	__asm__( "lock ; andl %1, (%0) ; lock ; andl %2, 4(%0)"
++		: : "r"((long *)p), "r"((unsigned)v), "r"((unsigned)(v>>32)) : "memory" );
++}
++
++#define a_or_64 a_or_64
++static inline void a_or_64(volatile uint64_t *p, uint64_t v)
++{
++	__asm__( "lock ; orl %1, (%0) ; lock ; orl %2, 4(%0)"
++		: : "r"((long *)p), "r"((unsigned)v), "r"((unsigned)(v>>32)) : "memory" );
++}
++
++#define a_or_l a_or_l
++static inline void a_or_l(volatile void *p, long v)
++{
++	__asm__( "lock ; orl %1, %0"
++		: "=m"(*(long *)p) : "r"(v) : "memory" );
++}
++
++#define a_cas a_cas
++static inline int a_cas(volatile int *p, int t, int s)
++{
++	__asm__( "lock ; cmpxchg %3, %1"
++		: "=a"(t), "=m"(*p) : "a"(t), "r"(s) : "memory" );
++	return t;
++}
++
++#define a_or a_or
++static inline void a_or(volatile int *p, int v)
++{
++	__asm__( "lock ; orl %1, %0"
++		: "=m"(*p) : "r"(v) : "memory" );
++}
++
++#define a_and a_and
++static inline void a_and(volatile int *p, int v)
++{
++	__asm__( "lock ; andl %1, %0"
++		: "=m"(*p) : "r"(v) : "memory" );
++}
++
++#define a_swap a_swap
++static inline int a_swap(volatile int *x, int v)
++{
++	__asm__( "xchg %0, %1" : "=r"(v), "=m"(*x) : "0"(v) : "memory" );
++	return v;
++}
++
++#define a_fetch_add a_fetch_add
++static inline int a_fetch_add(volatile int *x, int v)
++{
++	__asm__( "lock ; xadd %0, %1" : "=r"(v), "=m"(*x) : "0"(v) : "memory" );
++	return v;
++}
++
++#define a_inc a_inc
++static inline void a_inc(volatile int *x)
++{
++	__asm__( "lock ; incl %0" : "=m"(*x) : "m"(*x) : "memory" );
++}
++
++#define a_dec a_dec
++static inline void a_dec(volatile int *x)
++{
++	__asm__( "lock ; decl %0" : "=m"(*x) : "m"(*x) : "memory" );
++}
++
++#define a_store a_store
++static inline void a_store(volatile int *p, int x)
++{
++	__asm__( "movl %1, %0 ; lock ; orl $0,(%%esp)" : "=m"(*p) : "r"(x) : "memory" );
++}
++
++#define a_spin a_spin
++static inline void a_spin()
++{
++	__asm__ __volatile__( "pause" : : : "memory" );
++}
++
++#define a_barrier a_barrier
++static inline void a_barrier()
++{
++	__asm__ __volatile__( "" : : : "memory" );
++}
++
++#define a_crash a_crash
++static inline void a_crash()
++{
++	__asm__ __volatile__( "hlt" : : : "memory" );
++}
+--- a/arch/i386/bits/alltypes.h.in
++++ b/arch/i386/bits/alltypes.h.in
+@@ -26,10 +26,12 @@ TYPEDEF long double float_t;
+ TYPEDEF long double double_t;
+ #endif
+ 
+-#ifdef __cplusplus
+-TYPEDEF struct { alignas(8) long long __ll; long double __ld; } max_align_t;
+-#else
++#if !defined(__cplusplus)
+ TYPEDEF struct { _Alignas(8) long long __ll; long double __ld; } max_align_t;
++#elif defined(__GNUC__)
++TYPEDEF struct { __attribute__((__aligned__(8))) long long __ll; long double __ld; } max_align_t;
++#else
++TYPEDEF struct { alignas(8) long long __ll; long double __ld; } max_align_t;
+ #endif
+ 
+ TYPEDEF long time_t;
+--- a/arch/i386/pthread_arch.h
++++ b/arch/i386/pthread_arch.h
+@@ -7,4 +7,4 @@ static inline struct pthread *__pthread_
+ 
+ #define TP_ADJ(p) (p)
+ 
+-#define CANCEL_REG_IP 14
++#define MC_PC gregs[REG_EIP]
+--- a/arch/microblaze/atomic.h
++++ /dev/null
+@@ -1,143 +0,0 @@
+-#ifndef _INTERNAL_ATOMIC_H
+-#define _INTERNAL_ATOMIC_H
+-
+-#include <stdint.h>
+-
+-static inline int a_ctz_l(unsigned long x)
+-{
+-	static const char debruijn32[32] = {
+-		0, 1, 23, 2, 29, 24, 19, 3, 30, 27, 25, 11, 20, 8, 4, 13,
+-		31, 22, 28, 18, 26, 10, 7, 12, 21, 17, 9, 6, 16, 5, 15, 14
+-	};
+-	return debruijn32[(x&-x)*0x076be629 >> 27];
+-}
+-
+-static inline int a_ctz_64(uint64_t x)
+-{
+-	uint32_t y = x;
+-	if (!y) {
+-		y = x>>32;
+-		return 32 + a_ctz_l(y);
+-	}
+-	return a_ctz_l(y);
+-}
+-
+-static inline int a_cas(volatile int *p, int t, int s)
+-{
+-	register int old, tmp;
+-	__asm__ __volatile__ (
+-		"	addi %0, r0, 0\n"
+-		"1:	lwx %0, %2, r0\n"
+-		"	rsubk %1, %0, %3\n"
+-		"	bnei %1, 1f\n"
+-		"	swx %4, %2, r0\n"
+-		"	addic %1, r0, 0\n"
+-		"	bnei %1, 1b\n"
+-		"1:	"
+-		: "=&r"(old), "=&r"(tmp)
+-		: "r"(p), "r"(t), "r"(s)
+-		: "cc", "memory" );
+-	return old;
+-}
+-
+-static inline void *a_cas_p(volatile void *p, void *t, void *s)
+-{
+-	return (void *)a_cas(p, (int)t, (int)s);
+-}
+-
+-static inline int a_swap(volatile int *x, int v)
+-{
+-	register int old, tmp;
+-	__asm__ __volatile__ (
+-		"	addi %0, r0, 0\n"
+-		"1:	lwx %0, %2, r0\n"
+-		"	swx %3, %2, r0\n"
+-		"	addic %1, r0, 0\n"
+-		"	bnei %1, 1b\n"
+-		"1:	"
+-		: "=&r"(old), "=&r"(tmp)
+-		: "r"(x), "r"(v)
+-		: "cc", "memory" );
+-	return old;
+-}
+-
+-static inline int a_fetch_add(volatile int *x, int v)
+-{
+-	register int new, tmp;
+-	__asm__ __volatile__ (
+-		"	addi %0, r0, 0\n"
+-		"1:	lwx %0, %2, r0\n"
+-		"	addk %0, %0, %3\n"
+-		"	swx %0, %2, r0\n"
+-		"	addic %1, r0, 0\n"
+-		"	bnei %1, 1b\n"
+-		"1:	"
+-		: "=&r"(new), "=&r"(tmp)
+-		: "r"(x), "r"(v)
+-		: "cc", "memory" );
+-	return new-v;
+-}
+-
+-static inline void a_inc(volatile int *x)
+-{
+-	a_fetch_add(x, 1);
+-}
+-
+-static inline void a_dec(volatile int *x)
+-{
+-	a_fetch_add(x, -1);
+-}
+-
+-static inline void a_store(volatile int *p, int x)
+-{
+-	__asm__ __volatile__ (
+-		"swi %1, %0"
+-		: "=m"(*p) : "r"(x) : "memory" );
+-}
+-
+-#define a_spin a_barrier
+-
+-static inline void a_barrier()
+-{
+-	a_cas(&(int){0}, 0, 0);
+-}
+-
+-static inline void a_crash()
+-{
+-	*(volatile char *)0=0;
+-}
+-
+-static inline void a_and(volatile int *p, int v)
+-{
+-	int old;
+-	do old = *p;
+-	while (a_cas(p, old, old&v) != old);
+-}
+-
+-static inline void a_or(volatile int *p, int v)
+-{
+-	int old;
+-	do old = *p;
+-	while (a_cas(p, old, old|v) != old);
+-}
+-
+-static inline void a_or_l(volatile void *p, long v)
+-{
+-	a_or(p, v);
+-}
+-
+-static inline void a_and_64(volatile uint64_t *p, uint64_t v)
+-{
+-	union { uint64_t v; uint32_t r[2]; } u = { v };
+-	a_and((int *)p, u.r[0]);
+-	a_and((int *)p+1, u.r[1]);
+-}
+-
+-static inline void a_or_64(volatile uint64_t *p, uint64_t v)
+-{
+-	union { uint64_t v; uint32_t r[2]; } u = { v };
+-	a_or((int *)p, u.r[0]);
+-	a_or((int *)p+1, u.r[1]);
+-}
+-
+-#endif
+--- /dev/null
++++ b/arch/microblaze/atomic_arch.h
+@@ -0,0 +1,53 @@
++#define a_cas a_cas
++static inline int a_cas(volatile int *p, int t, int s)
++{
++	register int old, tmp;
++	__asm__ __volatile__ (
++		"	addi %0, r0, 0\n"
++		"1:	lwx %0, %2, r0\n"
++		"	rsubk %1, %0, %3\n"
++		"	bnei %1, 1f\n"
++		"	swx %4, %2, r0\n"
++		"	addic %1, r0, 0\n"
++		"	bnei %1, 1b\n"
++		"1:	"
++		: "=&r"(old), "=&r"(tmp)
++		: "r"(p), "r"(t), "r"(s)
++		: "cc", "memory" );
++	return old;
++}
++
++#define a_swap a_swap
++static inline int a_swap(volatile int *x, int v)
++{
++	register int old, tmp;
++	__asm__ __volatile__ (
++		"	addi %0, r0, 0\n"
++		"1:	lwx %0, %2, r0\n"
++		"	swx %3, %2, r0\n"
++		"	addic %1, r0, 0\n"
++		"	bnei %1, 1b\n"
++		"1:	"
++		: "=&r"(old), "=&r"(tmp)
++		: "r"(x), "r"(v)
++		: "cc", "memory" );
++	return old;
++}
++
++#define a_fetch_add a_fetch_add
++static inline int a_fetch_add(volatile int *x, int v)
++{
++	register int new, tmp;
++	__asm__ __volatile__ (
++		"	addi %0, r0, 0\n"
++		"1:	lwx %0, %2, r0\n"
++		"	addk %0, %0, %3\n"
++		"	swx %0, %2, r0\n"
++		"	addic %1, r0, 0\n"
++		"	bnei %1, 1b\n"
++		"1:	"
++		: "=&r"(new), "=&r"(tmp)
++		: "r"(x), "r"(v)
++		: "cc", "memory" );
++	return new-v;
++}
+--- a/arch/microblaze/pthread_arch.h
++++ b/arch/microblaze/pthread_arch.h
+@@ -7,4 +7,4 @@ static inline struct pthread *__pthread_
+ 
+ #define TP_ADJ(p) (p)
+ 
+-#define CANCEL_REG_IP 32
++#define MC_PC regs.pc
+--- a/arch/mips/atomic.h
++++ /dev/null
+@@ -1,205 +0,0 @@
+-#ifndef _INTERNAL_ATOMIC_H
+-#define _INTERNAL_ATOMIC_H
+-
+-#include <stdint.h>
+-
+-static inline int a_ctz_l(unsigned long x)
+-{
+-	static const char debruijn32[32] = {
+-		0, 1, 23, 2, 29, 24, 19, 3, 30, 27, 25, 11, 20, 8, 4, 13,
+-		31, 22, 28, 18, 26, 10, 7, 12, 21, 17, 9, 6, 16, 5, 15, 14
+-	};
+-	return debruijn32[(x&-x)*0x076be629 >> 27];
+-}
+-
+-static inline int a_ctz_64(uint64_t x)
+-{
+-	uint32_t y = x;
+-	if (!y) {
+-		y = x>>32;
+-		return 32 + a_ctz_l(y);
+-	}
+-	return a_ctz_l(y);
+-}
+-
+-static inline int a_cas(volatile int *p, int t, int s)
+-{
+-	int dummy;
+-	__asm__ __volatile__(
+-		".set push\n"
+-		".set mips2\n"
+-		".set noreorder\n"
+-		"	sync\n"
+-		"1:	ll %0, %2\n"
+-		"	bne %0, %3, 1f\n"
+-		"	addu %1, %4, $0\n"
+-		"	sc %1, %2\n"
+-		"	beq %1, $0, 1b\n"
+-		"	nop\n"
+-		"	sync\n"
+-		"1:	\n"
+-		".set pop\n"
+-		: "=&r"(t), "=&r"(dummy), "+m"(*p) : "r"(t), "r"(s) : "memory" );
+-        return t;
+-}
+-
+-static inline void *a_cas_p(volatile void *p, void *t, void *s)
+-{
+-	return (void *)a_cas(p, (int)t, (int)s);
+-}
+-
+-static inline int a_swap(volatile int *x, int v)
+-{
+-	int old, dummy;
+-	__asm__ __volatile__(
+-		".set push\n"
+-		".set mips2\n"
+-		".set noreorder\n"
+-		"	sync\n"
+-		"1:	ll %0, %2\n"
+-		"	addu %1, %3, $0\n"
+-		"	sc %1, %2\n"
+-		"	beq %1, $0, 1b\n"
+-		"	nop\n"
+-		"	sync\n"
+-		".set pop\n"
+-		: "=&r"(old), "=&r"(dummy), "+m"(*x) : "r"(v) : "memory" );
+-        return old;
+-}
+-
+-static inline int a_fetch_add(volatile int *x, int v)
+-{
+-	int old, dummy;
+-	__asm__ __volatile__(
+-		".set push\n"
+-		".set mips2\n"
+-		".set noreorder\n"
+-		"	sync\n"
+-		"1:	ll %0, %2\n"
+-		"	addu %1, %0, %3\n"
+-		"	sc %1, %2\n"
+-		"	beq %1, $0, 1b\n"
+-		"	nop\n"
+-		"	sync\n"
+-		".set pop\n"
+-		: "=&r"(old), "=&r"(dummy), "+m"(*x) : "r"(v) : "memory" );
+-        return old;
+-}
+-
+-static inline void a_inc(volatile int *x)
+-{
+-	int dummy;
+-	__asm__ __volatile__(
+-		".set push\n"
+-		".set mips2\n"
+-		".set noreorder\n"
+-		"	sync\n"
+-		"1:	ll %0, %1\n"
+-		"	addu %0, %0, 1\n"
+-		"	sc %0, %1\n"
+-		"	beq %0, $0, 1b\n"
+-		"	nop\n"
+-		"	sync\n"
+-		".set pop\n"
+-		: "=&r"(dummy), "+m"(*x) : : "memory" );
+-}
+-
+-static inline void a_dec(volatile int *x)
+-{
+-	int dummy;
+-	__asm__ __volatile__(
+-		".set push\n"
+-		".set mips2\n"
+-		".set noreorder\n"
+-		"	sync\n"
+-		"1:	ll %0, %1\n"
+-		"	subu %0, %0, 1\n"
+-		"	sc %0, %1\n"
+-		"	beq %0, $0, 1b\n"
+-		"	nop\n"
+-		"	sync\n"
+-		".set pop\n"
+-		: "=&r"(dummy), "+m"(*x) : : "memory" );
+-}
+-
+-static inline void a_store(volatile int *p, int x)
+-{
+-	__asm__ __volatile__(
+-		".set push\n"
+-		".set mips2\n"
+-		".set noreorder\n"
+-		"	sync\n"
+-		"	sw %1, %0\n"
+-		"	sync\n"
+-		".set pop\n"
+-		: "+m"(*p) : "r"(x) : "memory" );
+-}
+-
+-#define a_spin a_barrier
+-
+-static inline void a_barrier()
+-{
+-	a_cas(&(int){0}, 0, 0);
+-}
+-
+-static inline void a_crash()
+-{
+-	*(volatile char *)0=0;
+-}
+-
+-static inline void a_and(volatile int *p, int v)
+-{
+-	int dummy;
+-	__asm__ __volatile__(
+-		".set push\n"
+-		".set mips2\n"
+-		".set noreorder\n"
+-		"	sync\n"
+-		"1:	ll %0, %1\n"
+-		"	and %0, %0, %2\n"
+-		"	sc %0, %1\n"
+-		"	beq %0, $0, 1b\n"
+-		"	nop\n"
+-		"	sync\n"
+-		".set pop\n"
+-		: "=&r"(dummy), "+m"(*p) : "r"(v) : "memory" );
+-}
+-
+-static inline void a_or(volatile int *p, int v)
+-{
+-	int dummy;
+-	__asm__ __volatile__(
+-		".set push\n"
+-		".set mips2\n"
+-		".set noreorder\n"
+-		"	sync\n"
+-		"1:	ll %0, %1\n"
+-		"	or %0, %0, %2\n"
+-		"	sc %0, %1\n"
+-		"	beq %0, $0, 1b\n"
+-		"	nop\n"
+-		"	sync\n"
+-		".set pop\n"
+-		: "=&r"(dummy), "+m"(*p) : "r"(v) : "memory" );
+-}
+-
+-static inline void a_or_l(volatile void *p, long v)
+-{
+-	a_or(p, v);
+-}
+-
+-static inline void a_and_64(volatile uint64_t *p, uint64_t v)
+-{
+-	union { uint64_t v; uint32_t r[2]; } u = { v };
+-	a_and((int *)p, u.r[0]);
+-	a_and((int *)p+1, u.r[1]);
+-}
+-
+-static inline void a_or_64(volatile uint64_t *p, uint64_t v)
+-{
+-	union { uint64_t v; uint32_t r[2]; } u = { v };
+-	a_or((int *)p, u.r[0]);
+-	a_or((int *)p+1, u.r[1]);
+-}
+-
+-#endif
+--- /dev/null
++++ b/arch/mips/atomic_arch.h
+@@ -0,0 +1,39 @@
++#define a_ll a_ll
++static inline int a_ll(volatile int *p)
++{
++	int v;
++	__asm__ __volatile__ (
++		".set push ; .set mips2\n\t"
++		"ll %0, %1"
++		"\n\t.set pop"
++		: "=r"(v) : "m"(*p));
++	return v;
++}
++
++#define a_sc a_sc
++static inline int a_sc(volatile int *p, int v)
++{
++	int r;
++	__asm__ __volatile__ (
++		".set push ; .set mips2\n\t"
++		"sc %0, %1"
++		"\n\t.set pop"
++		: "=r"(r), "=m"(*p) : "0"(v) : "memory");
++	return r;
++}
++
++#define a_barrier a_barrier
++static inline void a_barrier()
++{
++	/* mips2 sync, but using too many directives causes
++	 * gcc not to inline it, so encode with .long instead. */
++	__asm__ __volatile__ (".long 0xf" : : : "memory");
++#if 0
++	__asm__ __volatile__ (
++		".set push ; .set mips2 ; sync ; .set pop"
++		: : : "memory");
++#endif
++}
++
++#define a_pre_llsc a_barrier
++#define a_post_llsc a_barrier
+--- a/arch/mips/crt_arch.h
++++ b/arch/mips/crt_arch.h
+@@ -4,13 +4,16 @@ __asm__(
+ ".text \n"
+ ".global _" START "\n"
+ ".global " START "\n"
++".global " START "_data\n"
+ ".type   _" START ", @function\n"
+ ".type   " START ", @function\n"
++".type   " START "_data, @function\n"
+ "_" START ":\n"
+ "" START ":\n"
+ "	bal 1f \n"
+ "	 move $fp, $0 \n"
+-"2:	.gpword 2b \n"
++"" START "_data: \n"
++"	.gpword " START "_data \n"
+ "	.gpword " START "_c \n"
+ ".weak _DYNAMIC \n"
+ ".hidden _DYNAMIC \n"
+--- a/arch/mips/pthread_arch.h
++++ b/arch/mips/pthread_arch.h
+@@ -16,4 +16,4 @@ static inline struct pthread *__pthread_
+ 
+ #define DTP_OFFSET 0x8000
+ 
+-#define CANCEL_REG_IP (3-(union {int __i; char __b;}){1}.__b)
++#define MC_PC pc
+--- a/arch/mips/syscall_arch.h
++++ b/arch/mips/syscall_arch.h
+@@ -3,9 +3,7 @@
+ ((union { long long ll; long l[2]; }){ .ll = x }).l[1]
+ #define __SYSCALL_LL_O(x) 0, __SYSCALL_LL_E((x))
+ 
+-#ifdef SHARED
+ __attribute__((visibility("hidden")))
+-#endif
+ long (__syscall)(long, ...);
+ 
+ #define SYSCALL_RLIM_INFINITY (-1UL/2)
+--- a/arch/or1k/atomic.h
++++ /dev/null
+@@ -1,120 +0,0 @@
+-#ifndef _INTERNAL_ATOMIC_H
+-#define _INTERNAL_ATOMIC_H
+-
+-#include <stdint.h>
+-
+-static inline int a_ctz_l(unsigned long x)
+-{
+-	static const char debruijn32[32] = {
+-		0, 1, 23, 2, 29, 24, 19, 3, 30, 27, 25, 11, 20, 8, 4, 13,
+-		31, 22, 28, 18, 26, 10, 7, 12, 21, 17, 9, 6, 16, 5, 15, 14
+-	};
+-	return debruijn32[(x&-x)*0x076be629 >> 27];
+-}
+-
+-static inline int a_ctz_64(uint64_t x)
+-{
+-	uint32_t y = x;
+-	if (!y) {
+-		y = x>>32;
+-		return 32 + a_ctz_l(y);
+-	}
+-	return a_ctz_l(y);
+-}
+-
+-static inline int a_cas(volatile int *p, int t, int s)
+-{
+-	__asm__("1:	l.lwa %0, %1\n"
+-		"	l.sfeq %0, %2\n"
+-		"	l.bnf 1f\n"
+-		"	 l.nop\n"
+-		"	l.swa %1, %3\n"
+-		"	l.bnf 1b\n"
+-		"	 l.nop\n"
+-		"1:	\n"
+-		: "=&r"(t), "+m"(*p) : "r"(t), "r"(s) : "cc", "memory" );
+-        return t;
+-}
+-
+-static inline void *a_cas_p(volatile void *p, void *t, void *s)
+-{
+-	return (void *)a_cas(p, (int)t, (int)s);
+-}
+-
+-static inline int a_swap(volatile int *x, int v)
+-{
+-	int old;
+-	do old = *x;
+-	while (a_cas(x, old, v) != old);
+-	return old;
+-}
+-
+-static inline int a_fetch_add(volatile int *x, int v)
+-{
+-	int old;
+-	do old = *x;
+-	while (a_cas(x, old, old+v) != old);
+-	return old;
+-}
+-
+-static inline void a_inc(volatile int *x)
+-{
+-	a_fetch_add(x, 1);
+-}
+-
+-static inline void a_dec(volatile int *x)
+-{
+-	a_fetch_add(x, -1);
+-}
+-
+-static inline void a_store(volatile int *p, int x)
+-{
+-	a_swap(p, x);
+-}
+-
+-#define a_spin a_barrier
+-
+-static inline void a_barrier()
+-{
+-	a_cas(&(int){0}, 0, 0);
+-}
+-
+-static inline void a_crash()
+-{
+-	*(volatile char *)0=0;
+-}
+-
+-static inline void a_and(volatile int *p, int v)
+-{
+-	int old;
+-	do old = *p;
+-	while (a_cas(p, old, old&v) != old);
+-}
+-
+-static inline void a_or(volatile int *p, int v)
+-{
+-	int old;
+-	do old = *p;
+-	while (a_cas(p, old, old|v) != old);
+-}
+-
+-static inline void a_or_l(volatile void *p, long v)
+-{
+-	a_or(p, v);
+-}
+-
+-static inline void a_and_64(volatile uint64_t *p, uint64_t v)
+-{
+-	union { uint64_t v; uint32_t r[2]; } u = { v };
+-	a_and((int *)p, u.r[0]);
+-	a_and((int *)p+1, u.r[1]);
+-}
+-
+-static inline void a_or_64(volatile uint64_t *p, uint64_t v)
+-{
+-	union { uint64_t v; uint32_t r[2]; } u = { v };
+-	a_or((int *)p, u.r[0]);
+-	a_or((int *)p+1, u.r[1]);
+-}
+-
+-#endif
+--- /dev/null
++++ b/arch/or1k/atomic_arch.h
+@@ -0,0 +1,14 @@
++#define a_cas a_cas
++static inline int a_cas(volatile int *p, int t, int s)
++{
++	__asm__("1:	l.lwa %0, %1\n"
++		"	l.sfeq %0, %2\n"
++		"	l.bnf 1f\n"
++		"	 l.nop\n"
++		"	l.swa %1, %3\n"
++		"	l.bnf 1b\n"
++		"	 l.nop\n"
++		"1:	\n"
++		: "=&r"(t), "+m"(*p) : "r"(t), "r"(s) : "cc", "memory" );
++        return t;
++}
+--- a/arch/or1k/pthread_arch.h
++++ b/arch/or1k/pthread_arch.h
+@@ -14,5 +14,4 @@ static inline struct pthread *__pthread_
+ #define TLS_ABOVE_TP
+ #define TP_ADJ(p) ((char *)(p) + sizeof(struct pthread))
+ 
+-/* word-offset to 'pc' in mcontext_t */
+-#define CANCEL_REG_IP 32
++#define MC_PC regs.pc
+--- a/arch/powerpc/atomic.h
++++ /dev/null
+@@ -1,126 +0,0 @@
+-#ifndef _INTERNAL_ATOMIC_H
+-#define _INTERNAL_ATOMIC_H
+-
+-#include <stdint.h>
+-#include <endian.h>
+-
+-static inline int a_ctz_l(unsigned long x)
+-{
+-	static const char debruijn32[32] = {
+-		0, 1, 23, 2, 29, 24, 19, 3, 30, 27, 25, 11, 20, 8, 4, 13,
+-		31, 22, 28, 18, 26, 10, 7, 12, 21, 17, 9, 6, 16, 5, 15, 14
+-	};
+-	return debruijn32[(x&-x)*0x076be629 >> 27];
+-}
+-
+-static inline int a_ctz_64(uint64_t x)
+-{
+-	uint32_t y = x;
+-	if (!y) {
+-		y = x>>32;
+-		return 32 + a_ctz_l(y);
+-	}
+-	return a_ctz_l(y);
+-}
+-
+-static inline int a_cas(volatile int *p, int t, int s)
+-{
+-	__asm__("\n"
+-		"	sync\n"
+-		"1:	lwarx %0, 0, %4\n"
+-		"	cmpw %0, %2\n"
+-		"	bne 1f\n"
+-		"	stwcx. %3, 0, %4\n"
+-		"	bne- 1b\n"
+-		"	isync\n"
+-		"1:	\n"
+-		: "=&r"(t), "+m"(*p) : "r"(t), "r"(s), "r"(p) : "cc", "memory" );
+-        return t;
+-}
+-
+-static inline void *a_cas_p(volatile void *p, void *t, void *s)
+-{
+-	return (void *)a_cas(p, (int)t, (int)s);
+-}
+-
+-static inline int a_swap(volatile int *x, int v)
+-{
+-	int old;
+-	do old = *x;
+-	while (a_cas(x, old, v) != old);
+-	return old;
+-}
+-
+-static inline int a_fetch_add(volatile int *x, int v)
+-{
+-	int old;
+-	do old = *x;
+-	while (a_cas(x, old, old+v) != old);
+-	return old;
+-}
+-
+-static inline void a_inc(volatile int *x)
+-{
+-	a_fetch_add(x, 1);
+-}
+-
+-static inline void a_dec(volatile int *x)
+-{
+-	a_fetch_add(x, -1);
+-}
+-
+-static inline void a_store(volatile int *p, int x)
+-{
+-	__asm__ __volatile__ ("\n"
+-		"	sync\n"
+-		"	stw %1, %0\n"
+-		"	isync\n"
+-		: "=m"(*p) : "r"(x) : "memory" );
+-}
+-
+-#define a_spin a_barrier
+-
+-static inline void a_barrier()
+-{
+-	a_cas(&(int){0}, 0, 0);
+-}
+-
+-static inline void a_crash()
+-{
+-	*(volatile char *)0=0;
+-}
+-
+-static inline void a_and(volatile int *p, int v)
+-{
+-	int old;
+-	do old = *p;
+-	while (a_cas(p, old, old&v) != old);
+-}
+-
+-static inline void a_or(volatile int *p, int v)
+-{
+-	int old;
+-	do old = *p;
+-	while (a_cas(p, old, old|v) != old);
+-}
+-
+-static inline void a_or_l(volatile void *p, long v)
+-{
+-	a_or(p, v);
+-}
+-
+-static inline void a_and_64(volatile uint64_t *p, uint64_t v)
+-{
+-	union { uint64_t v; uint32_t r[2]; } u = { v };
+-	a_and((int *)p, u.r[0]);
+-	a_and((int *)p+1, u.r[1]);
+-}
+-
+-static inline void a_or_64(volatile uint64_t *p, uint64_t v)
+-{
+-	union { uint64_t v; uint32_t r[2]; } u = { v };
+-	a_or((int *)p, u.r[0]);
+-	a_or((int *)p+1, u.r[1]);
+-}
+-
+-#endif
+--- /dev/null
++++ b/arch/powerpc/atomic_arch.h
+@@ -0,0 +1,15 @@
++#define a_cas a_cas
++static inline int a_cas(volatile int *p, int t, int s)
++{
++	__asm__("\n"
++		"	sync\n"
++		"1:	lwarx %0, 0, %4\n"
++		"	cmpw %0, %2\n"
++		"	bne 1f\n"
++		"	stwcx. %3, 0, %4\n"
++		"	bne- 1b\n"
++		"	isync\n"
++		"1:	\n"
++		: "=&r"(t), "+m"(*p) : "r"(t), "r"(s), "r"(p) : "cc", "memory" );
++        return t;
++}
+--- a/arch/powerpc/pthread_arch.h
++++ b/arch/powerpc/pthread_arch.h
+@@ -15,9 +15,8 @@ static inline struct pthread *__pthread_
+ 
+ #define DTP_OFFSET 0x8000
+ 
+-// offset of the PC register in mcontext_t, divided by the system wordsize
+ // the kernel calls the ip "nip", it's the first saved value after the 32
+ // GPRs.
+-#define CANCEL_REG_IP 32
++#define MC_PC gregs[32]
+ 
+ #define CANARY canary_at_end
+--- a/arch/sh/atomic.h
++++ /dev/null
+@@ -1,168 +0,0 @@
+-#ifndef _INTERNAL_ATOMIC_H
+-#define _INTERNAL_ATOMIC_H
+-
+-#include <stdint.h>
+-
+-static inline int a_ctz_l(unsigned long x)
+-{
+-	static const char debruijn32[32] = {
+-		0, 1, 23, 2, 29, 24, 19, 3, 30, 27, 25, 11, 20, 8, 4, 13,
+-		31, 22, 28, 18, 26, 10, 7, 12, 21, 17, 9, 6, 16, 5, 15, 14
+-	};
+-	return debruijn32[(x&-x)*0x076be629 >> 27];
+-}
+-
+-static inline int a_ctz_64(uint64_t x)
+-{
+-	uint32_t y = x;
+-	if (!y) {
+-		y = x>>32;
+-		return 32 + a_ctz_l(y);
+-	}
+-	return a_ctz_l(y);
+-}
+-
+-#define LLSC_CLOBBERS "r0", "t", "memory"
+-#define LLSC_START(mem) "synco\n"  \
+-	"0:	movli.l @" mem ", r0\n"
+-#define LLSC_END(mem)              \
+-	"1:	movco.l r0, @" mem "\n"    \
+-	"	bf 0b\n"                   \
+-	"	synco\n"
+-
+-static inline int __sh_cas_llsc(volatile int *p, int t, int s)
+-{
+-	int old;
+-	__asm__ __volatile__(
+-		LLSC_START("%1")
+-		"	mov r0, %0\n"
+-		"	cmp/eq %0, %2\n"
+-		"	bf 1f\n"
+-		"	mov %3, r0\n"
+-		LLSC_END("%1")
+-		: "=&r"(old) : "r"(p), "r"(t), "r"(s) : LLSC_CLOBBERS);
+-	return old;
+-}
+-
+-static inline int __sh_swap_llsc(volatile int *x, int v)
+-{
+-	int old;
+-	__asm__ __volatile__(
+-		LLSC_START("%1")
+-		"	mov r0, %0\n"
+-		"	mov %2, r0\n"
+-		LLSC_END("%1")
+-		: "=&r"(old) : "r"(x), "r"(v) : LLSC_CLOBBERS);
+-	return old;
+-}
+-
+-static inline int __sh_fetch_add_llsc(volatile int *x, int v)
+-{
+-	int old;
+-	__asm__ __volatile__(
+-		LLSC_START("%1")
+-		"	mov r0, %0\n"
+-		"	add %2, r0\n"
+-		LLSC_END("%1")
+-		: "=&r"(old) : "r"(x), "r"(v) : LLSC_CLOBBERS);
+-	return old;
+-}
+-
+-static inline void __sh_store_llsc(volatile int *p, int x)
+-{
+-	__asm__ __volatile__(
+-		"	synco\n"
+-		"	mov.l %1, @%0\n"
+-		"	synco\n"
+-		: : "r"(p), "r"(x) : "memory");
+-}
+-
+-static inline void __sh_and_llsc(volatile int *x, int v)
+-{
+-	__asm__ __volatile__(
+-		LLSC_START("%0")
+-		"	and %1, r0\n"
+-		LLSC_END("%0")
+-		: : "r"(x), "r"(v) : LLSC_CLOBBERS);
+-}
+-
+-static inline void __sh_or_llsc(volatile int *x, int v)
+-{
+-	__asm__ __volatile__(
+-		LLSC_START("%0")
+-		"	or %1, r0\n"
+-		LLSC_END("%0")
+-		: : "r"(x), "r"(v) : LLSC_CLOBBERS);
+-}
+-
+-#ifdef __SH4A__
+-#define a_cas(p,t,s)     __sh_cas_llsc(p,t,s)
+-#define a_swap(x,v)      __sh_swap_llsc(x,v)
+-#define a_fetch_add(x,v) __sh_fetch_add_llsc(x, v)
+-#define a_store(x,v)     __sh_store_llsc(x, v)
+-#define a_and(x,v)       __sh_and_llsc(x, v)
+-#define a_or(x,v)        __sh_or_llsc(x, v)
+-#else
+-
+-int  __sh_cas(volatile int *, int, int);
+-int  __sh_swap(volatile int *, int);
+-int  __sh_fetch_add(volatile int *, int);
+-void __sh_store(volatile int *, int);
+-void __sh_and(volatile int *, int);
+-void __sh_or(volatile int *, int);
+-
+-#define a_cas(p,t,s)     __sh_cas(p,t,s)
+-#define a_swap(x,v)      __sh_swap(x,v)
+-#define a_fetch_add(x,v) __sh_fetch_add(x, v)
+-#define a_store(x,v)     __sh_store(x, v)
+-#define a_and(x,v)       __sh_and(x, v)
+-#define a_or(x,v)        __sh_or(x, v)
+-#endif
+-
+-static inline void *a_cas_p(volatile void *p, void *t, void *s)
+-{
+-	return (void *)a_cas(p, (int)t, (int)s);
+-}
+-
+-static inline void a_inc(volatile int *x)
+-{
+-	a_fetch_add(x, 1);
+-}
+-
+-static inline void a_dec(volatile int *x)
+-{
+-	a_fetch_add(x, -1);
+-}
+-
+-#define a_spin a_barrier
+-
+-static inline void a_barrier()
+-{
+-	a_cas(&(int){0}, 0, 0);
+-}
+-
+-static inline void a_crash()
+-{
+-	*(volatile char *)0=0;
+-}
+-
+-static inline void a_or_l(volatile void *p, long v)
+-{
+-	a_or(p, v);
+-}
+-
+-static inline void a_and_64(volatile uint64_t *p, uint64_t v)
+-{
+-	union { uint64_t v; uint32_t r[2]; } u = { v };
+-	a_and((int *)p,   u.r[0]);
+-	a_and((int *)p+1, u.r[1]);
+-}
+-
+-static inline void a_or_64(volatile uint64_t *p, uint64_t v)
+-{
+-	union { uint64_t v; uint32_t r[2]; } u = { v };
+-	a_or((int *)p,   u.r[0]);
+-	a_or((int *)p+1, u.r[1]);
+-}
+-
+-#endif
+--- /dev/null
++++ b/arch/sh/atomic_arch.h
+@@ -0,0 +1,46 @@
++#if defined(__SH4A__)
++
++#define a_ll a_ll
++static inline int a_ll(volatile int *p)
++{
++	int v;
++	__asm__ __volatile__ ("movli.l @%1, %0" : "=z"(v) : "r"(p), "m"(*p));
++	return v;
++}
++
++#define a_sc a_sc
++static inline int a_sc(volatile int *p, int v)
++{
++	int r;
++	__asm__ __volatile__ (
++		"movco.l %2, @%3 ; movt %0"
++		: "=r"(r), "=m"(*p) : "z"(v), "r"(p) : "memory", "cc");
++	return r;
++}
++
++#define a_barrier a_barrier
++static inline void a_barrier()
++{
++	__asm__ __volatile__ ("synco" : : "memory");
++}
++
++#define a_pre_llsc a_barrier
++#define a_post_llsc a_barrier
++
++#else
++
++#define a_cas a_cas
++__attribute__((__visibility__("hidden"))) extern const void *__sh_cas_ptr;
++static inline int a_cas(volatile int *p, int t, int s)
++{
++	register int r1 __asm__("r1");
++	register int r2 __asm__("r2") = t;
++	register int r3 __asm__("r3") = s;
++	__asm__ __volatile__ (
++		"jsr @%4 ; nop"
++		: "=r"(r1), "+r"(r3) : "z"(p), "r"(r2), "r"(__sh_cas_ptr)
++		: "memory", "pr", "cc");
++	return r3;
++}
++
++#endif
+--- a/arch/sh/crt_arch.h
++++ b/arch/sh/crt_arch.h
+@@ -22,7 +22,8 @@ START ": \n"
+ "	mov.l 1f, r5 \n"
+ "	mov.l 1f+4, r6 \n"
+ "	add r0, r5 \n"
+-"	bsr __fdpic_fixup \n"
++"	mov.l 4f, r1 \n"
++"5:	bsrf r1 \n"
+ "	 add r0, r6 \n"
+ "	mov r0, r12 \n"
+ #endif
+@@ -31,11 +32,16 @@ START ": \n"
+ "	mov.l r9, @-r15 \n"
+ "	mov.l r8, @-r15 \n"
+ "	mov #-16, r0 \n"
+-"	bsr " START "_c \n"
++"	mov.l 2f, r1 \n"
++"3:	bsrf r1 \n"
+ "	 and r0, r15 \n"
+ ".align 2 \n"
+ "1:	.long __ROFIXUP_LIST__@PCREL \n"
+ "	.long __ROFIXUP_END__@PCREL + 4 \n"
++"2:	.long " START "_c@PCREL - (3b+4-.) \n"
++#ifndef SHARED
++"4:	.long __fdpic_fixup@PCREL - (5b+4-.) \n"
++#endif
+ );
+ 
+ #ifndef SHARED
+@@ -53,13 +59,14 @@ START ": \n"
+ "	add r0, r5 \n"
+ "	mov r15, r4 \n"
+ "	mov #-16, r0 \n"
+-"	and r0, r15 \n"
+-"	bsr " START "_c \n"
+-"	nop \n"
++"	mov.l 2f, r1 \n"
++"3:	bsrf r1 \n"
++"	 and r0, r15 \n"
+ ".align 2 \n"
+ ".weak _DYNAMIC \n"
+ ".hidden _DYNAMIC \n"
+ "1:	.long _DYNAMIC-. \n"
++"2:	.long " START "_c@PCREL - (3b+4-.) \n"
+ );
+ 
+ #endif
+--- a/arch/sh/pthread_arch.h
++++ b/arch/sh/pthread_arch.h
+@@ -8,4 +8,4 @@ static inline struct pthread *__pthread_
+ #define TLS_ABOVE_TP
+ #define TP_ADJ(p) ((char *)(p) + sizeof(struct pthread) - 8)
+ 
+-#define CANCEL_REG_IP 17
++#define MC_PC sc_pc
+--- a/arch/sh/reloc.h
++++ b/arch/sh/reloc.h
+@@ -32,6 +32,8 @@
+ #define REL_DTPOFF      R_SH_TLS_DTPOFF32
+ #define REL_TPOFF       R_SH_TLS_TPOFF32
+ 
++#define DL_NOMMU_SUPPORT 1
++
+ #if __SH_FDPIC__
+ #define REL_FUNCDESC    R_SH_FUNCDESC
+ #define REL_FUNCDESC_VAL R_SH_FUNCDESC_VALUE
+--- a/arch/sh/src/__set_thread_area.c
++++ /dev/null
+@@ -1,34 +0,0 @@
+-#include "pthread_impl.h"
+-#include "libc.h"
+-#include "sh_atomic.h"
+-#include <elf.h>
+-
+-/* Also perform sh-specific init */
+-
+-#define CPU_HAS_LLSC 0x0040
+-
+-__attribute__((__visibility__("hidden"))) unsigned __sh_atomic_model, __sh_nommu;
+-
+-int __set_thread_area(void *p)
+-{
+-	size_t *aux;
+-	__asm__ __volatile__ ( "ldc %0, gbr" : : "r"(p) : "memory" );
+-#ifndef __SH4A__
+-	if (__hwcap & CPU_HAS_LLSC) {
+-		__sh_atomic_model = SH_A_LLSC;
+-		return 0;
+-	}
+-#if !defined(__SH3__) && !defined(__SH4__)
+-	for (aux=libc.auxv; *aux; aux+=2) {
+-		if (*aux != AT_PLATFORM) continue;
+-		const char *s = (void *)aux[1];
+-		if (s[0]!='s' || s[1]!='h' || s[2]!='2' || s[3]-'0'<10u) break;
+-		__sh_atomic_model = SH_A_IMASK;
+-		__sh_nommu = 1;
+-		return 0;
+-	}
+-#endif
+-	/* __sh_atomic_model = SH_A_GUSA; */ /* 0, default */
+-#endif
+-	return 0;
+-}
+--- a/arch/sh/src/atomic.c
++++ /dev/null
+@@ -1,158 +0,0 @@
+-#ifndef __SH4A__
+-
+-#include "sh_atomic.h"
+-#include "atomic.h"
+-#include "libc.h"
+-
+-static inline unsigned mask()
+-{
+-	unsigned sr;
+-	__asm__ __volatile__ ( "\n"
+-	"	stc sr,r0 \n"
+-	"	mov r0,%0 \n"
+-	"	or #0xf0,r0 \n"
+-	"	ldc r0,sr \n"
+-	: "=&r"(sr) : : "memory", "r0" );
+-	return sr;
+-}
+-
+-static inline void unmask(unsigned sr)
+-{
+-	__asm__ __volatile__ ( "ldc %0,sr" : : "r"(sr) : "memory" );
+-}
+-
+-/* gusa is a hack in the kernel which lets you create a sequence of instructions
+- * which will be restarted if the process is preempted in the middle of the
+- * sequence. It will do for implementing atomics on non-smp systems. ABI is:
+- * r0  = address of first instruction after the atomic sequence
+- * r1  = original stack pointer
+- * r15 = -1 * length of atomic sequence in bytes
+- */
+-#define GUSA_CLOBBERS   "r0", "r1", "memory"
+-#define GUSA_START(mem,old,nop)    \
+-	"	.align 2\n"                \
+-	"	mova 1f, r0\n"             \
+-	nop                            \
+-	"	mov r15, r1\n"             \
+-	"	mov #(0f-1f), r15\n"       \
+-	"0:	mov.l @" mem ", " old "\n"
+-/* the target of mova must be 4 byte aligned, so we may need a nop */
+-#define GUSA_START_ODD(mem,old)  GUSA_START(mem,old,"")
+-#define GUSA_START_EVEN(mem,old) GUSA_START(mem,old,"\tnop\n")
+-#define GUSA_END(mem,new)          \
+-	"	mov.l " new ", @" mem "\n" \
+-	"1:	mov r1, r15\n"
+-
+-int __sh_cas(volatile int *p, int t, int s)
+-{
+-	if (__sh_atomic_model == SH_A_LLSC) return __sh_cas_llsc(p, t, s);
+-
+-	if (__sh_atomic_model == SH_A_IMASK) {
+-		unsigned sr = mask();
+-		int old = *p;
+-		if (old==t) *p = s;
+-		unmask(sr);
+-		return old;
+-	}
+-
+-	int old;
+-	__asm__ __volatile__(
+-		GUSA_START_EVEN("%1", "%0")
+-		"	cmp/eq %0, %2\n"
+-		"	bf 1f\n"
+-		GUSA_END("%1", "%3")
+-		: "=&r"(old) : "r"(p), "r"(t), "r"(s) : GUSA_CLOBBERS, "t");
+-	return old;
+-}
+-
+-int __sh_swap(volatile int *x, int v)
+-{
+-	if (__sh_atomic_model == SH_A_LLSC) return __sh_swap_llsc(x, v);
+-
+-	if (__sh_atomic_model == SH_A_IMASK) {
+-		unsigned sr = mask();
+-		int old = *x;
+-		*x = v;
+-		unmask(sr);
+-		return old;
+-	}
+-
+-	int old;
+-	__asm__ __volatile__(
+-		GUSA_START_EVEN("%1", "%0")
+-		GUSA_END("%1", "%2")
+-		: "=&r"(old) : "r"(x), "r"(v) : GUSA_CLOBBERS);
+-	return old;
+-}
+-
+-int __sh_fetch_add(volatile int *x, int v)
+-{
+-	if (__sh_atomic_model == SH_A_LLSC) return __sh_fetch_add_llsc(x, v);
+-
+-	if (__sh_atomic_model == SH_A_IMASK) {
+-		unsigned sr = mask();
+-		int old = *x;
+-		*x = old + v;
+-		unmask(sr);
+-		return old;
+-	}
+-
+-	int old, dummy;
+-	__asm__ __volatile__(
+-		GUSA_START_EVEN("%2", "%0")
+-		"	mov %0, %1\n"
+-		"	add %3, %1\n"
+-		GUSA_END("%2", "%1")
+-		: "=&r"(old), "=&r"(dummy) : "r"(x), "r"(v) : GUSA_CLOBBERS);
+-	return old;
+-}
+-
+-void __sh_store(volatile int *p, int x)
+-{
+-	if (__sh_atomic_model == SH_A_LLSC) return __sh_store_llsc(p, x);
+-	__asm__ __volatile__(
+-		"	mov.l %1, @%0\n"
+-		: : "r"(p), "r"(x) : "memory");
+-}
+-
+-void __sh_and(volatile int *x, int v)
+-{
+-	if (__sh_atomic_model == SH_A_LLSC) return __sh_and_llsc(x, v);
+-
+-	if (__sh_atomic_model == SH_A_IMASK) {
+-		unsigned sr = mask();
+-		int old = *x;
+-		*x = old & v;
+-		unmask(sr);
+-		return;
+-	}
+-
+-	int dummy;
+-	__asm__ __volatile__(
+-		GUSA_START_ODD("%1", "%0")
+-		"	and %2, %0\n"
+-		GUSA_END("%1", "%0")
+-		: "=&r"(dummy) : "r"(x), "r"(v) : GUSA_CLOBBERS);
+-}
+-
+-void __sh_or(volatile int *x, int v)
+-{
+-	if (__sh_atomic_model == SH_A_LLSC) return __sh_or_llsc(x, v);
+-
+-	if (__sh_atomic_model == SH_A_IMASK) {
+-		unsigned sr = mask();
+-		int old = *x;
+-		*x = old | v;
+-		unmask(sr);
+-		return;
+-	}
+-
+-	int dummy;
+-	__asm__ __volatile__(
+-		GUSA_START_ODD("%1", "%0")
+-		"	or %2, %0\n"
+-		GUSA_END("%1", "%0")
+-		: "=&r"(dummy) : "r"(x), "r"(v) : GUSA_CLOBBERS);
+-}
+-
+-#endif
+--- a/arch/sh/src/sh_atomic.h
++++ /dev/null
+@@ -1,15 +0,0 @@
+-#ifndef _SH_ATOMIC_H
+-#define _SH_ATOMIC_H
+-
+-#define SH_A_GUSA 0
+-#define SH_A_LLSC 1
+-#define SH_A_CAS 2
+-#if !defined(__SH3__) && !defined(__SH4__)
+-#define SH_A_IMASK 3
+-#else
+-#define SH_A_IMASK -1LL /* unmatchable by unsigned int */
+-#endif
+-
+-extern __attribute__((__visibility__("hidden"))) unsigned __sh_atomic_model;
+-
+-#endif
+--- a/arch/x32/atomic.h
++++ /dev/null
+@@ -1,105 +0,0 @@
+-#ifndef _INTERNAL_ATOMIC_H
+-#define _INTERNAL_ATOMIC_H
+-
+-#include <stdint.h>
+-
+-static inline int a_ctz_64(uint64_t x)
+-{
+-	__asm__( "bsf %1,%0" : "=r"(x) : "r"(x) );
+-	return x;
+-}
+-
+-static inline int a_ctz_l(unsigned long x)
+-{
+-	__asm__( "bsf %1,%0" : "=r"(x) : "r"(x) );
+-	return x;
+-}
+-
+-static inline void a_and_64(volatile uint64_t *p, uint64_t v)
+-{
+-	__asm__( "lock ; and %1, %0"
+-			 : "=m"(*p) : "r"(v) : "memory" );
+-}
+-
+-static inline void a_or_64(volatile uint64_t *p, uint64_t v)
+-{
+-	__asm__( "lock ; or %1, %0"
+-			 : "=m"(*p) : "r"(v) : "memory" );
+-}
+-
+-static inline void a_or_l(volatile void *p, long v)
+-{
+-	__asm__( "lock ; or %1, %0"
+-		: "=m"(*(long *)p) : "r"(v) : "memory" );
+-}
+-
+-static inline void *a_cas_p(volatile void *p, void *t, void *s)
+-{
+-	__asm__( "lock ; cmpxchg %3, %1"
+-		: "=a"(t), "=m"(*(long *)p) : "a"(t), "r"(s) : "memory" );
+-	return t;
+-}
+-
+-static inline int a_cas(volatile int *p, int t, int s)
+-{
+-	__asm__( "lock ; cmpxchg %3, %1"
+-		: "=a"(t), "=m"(*p) : "a"(t), "r"(s) : "memory" );
+-	return t;
+-}
+-
+-static inline void a_or(volatile int *p, int v)
+-{
+-	__asm__( "lock ; or %1, %0"
+-		: "=m"(*p) : "r"(v) : "memory" );
+-}
+-
+-static inline void a_and(volatile int *p, int v)
+-{
+-	__asm__( "lock ; and %1, %0"
+-		: "=m"(*p) : "r"(v) : "memory" );
+-}
+-
+-static inline int a_swap(volatile int *x, int v)
+-{
+-	__asm__( "xchg %0, %1" : "=r"(v), "=m"(*x) : "0"(v) : "memory" );
+-	return v;
+-}
+-
+-static inline int a_fetch_add(volatile int *x, int v)
+-{
+-	__asm__( "lock ; xadd %0, %1" : "=r"(v), "=m"(*x) : "0"(v) : "memory" );
+-	return v;
+-}
+-
+-static inline void a_inc(volatile int *x)
+-{
+-	__asm__( "lock ; incl %0" : "=m"(*x) : "m"(*x) : "memory" );
+-}
+-
+-static inline void a_dec(volatile int *x)
+-{
+-	__asm__( "lock ; decl %0" : "=m"(*x) : "m"(*x) : "memory" );
+-}
+-
+-static inline void a_store(volatile int *p, int x)
+-{
+-	__asm__( "mov %1, %0 ; lock ; orl $0,(%%rsp)" : "=m"(*p) : "r"(x) : "memory" );
+-}
+-
+-static inline void a_spin()
+-{
+-	__asm__ __volatile__( "pause" : : : "memory" );
+-}
+-
+-static inline void a_barrier()
+-{
+-	__asm__ __volatile__( "" : : : "memory" );
+-}
+-
+-static inline void a_crash()
+-{
+-	__asm__ __volatile__( "hlt" : : : "memory" );
+-}
+-
+-
+-#endif
+--- /dev/null
++++ b/arch/x32/atomic_arch.h
+@@ -0,0 +1,106 @@
++#define a_ctz_64 a_ctz_64
++static inline int a_ctz_64(uint64_t x)
++{
++	__asm__( "bsf %1,%0" : "=r"(x) : "r"(x) );
++	return x;
++}
++
++#define a_ctz_l a_ctz_l
++static inline int a_ctz_l(unsigned long x)
++{
++	__asm__( "bsf %1,%0" : "=r"(x) : "r"(x) );
++	return x;
++}
++
++#define a_and_64 a_and_64
++static inline void a_and_64(volatile uint64_t *p, uint64_t v)
++{
++	__asm__( "lock ; and %1, %0"
++			 : "=m"(*p) : "r"(v) : "memory" );
++}
++
++#define a_or_64 a_or_64
++static inline void a_or_64(volatile uint64_t *p, uint64_t v)
++{
++	__asm__( "lock ; or %1, %0"
++			 : "=m"(*p) : "r"(v) : "memory" );
++}
++
++#define a_or_l a_or_l
++static inline void a_or_l(volatile void *p, long v)
++{
++	__asm__( "lock ; or %1, %0"
++		: "=m"(*(long *)p) : "r"(v) : "memory" );
++}
++
++#define a_cas a_cas
++static inline int a_cas(volatile int *p, int t, int s)
++{
++	__asm__( "lock ; cmpxchg %3, %1"
++		: "=a"(t), "=m"(*p) : "a"(t), "r"(s) : "memory" );
++	return t;
++}
++
++#define a_or a_or
++static inline void a_or(volatile int *p, int v)
++{
++	__asm__( "lock ; or %1, %0"
++		: "=m"(*p) : "r"(v) : "memory" );
++}
++
++#define a_and a_and
++static inline void a_and(volatile int *p, int v)
++{
++	__asm__( "lock ; and %1, %0"
++		: "=m"(*p) : "r"(v) : "memory" );
++}
++
++#define a_swap a_swap
++static inline int a_swap(volatile int *x, int v)
++{
++	__asm__( "xchg %0, %1" : "=r"(v), "=m"(*x) : "0"(v) : "memory" );
++	return v;
++}
++
++#define a_fetch_add a_fetch_add
++static inline int a_fetch_add(volatile int *x, int v)
++{
++	__asm__( "lock ; xadd %0, %1" : "=r"(v), "=m"(*x) : "0"(v) : "memory" );
++	return v;
++}
++
++#define a_inc a_inc
++static inline void a_inc(volatile int *x)
++{
++	__asm__( "lock ; incl %0" : "=m"(*x) : "m"(*x) : "memory" );
++}
++
++#define a_dec a_dec
++static inline void a_dec(volatile int *x)
++{
++	__asm__( "lock ; decl %0" : "=m"(*x) : "m"(*x) : "memory" );
++}
++
++#define a_store a_store
++static inline void a_store(volatile int *p, int x)
++{
++	__asm__( "mov %1, %0 ; lock ; orl $0,(%%rsp)" : "=m"(*p) : "r"(x) : "memory" );
++}
++
++#define a_spin a_spin
++static inline void a_spin()
++{
++	__asm__ __volatile__( "pause" : : : "memory" );
++}
++
++#define a_barrier a_barrier
++static inline void a_barrier()
++{
++	__asm__ __volatile__( "" : : : "memory" );
++}
++
++#define a_crash a_crash
++static inline void a_crash()
++{
++	__asm__ __volatile__( "hlt" : : : "memory" );
++}
+--- a/arch/x32/pthread_arch.h
++++ b/arch/x32/pthread_arch.h
+@@ -7,6 +7,6 @@ static inline struct pthread *__pthread_
+ 
+ #define TP_ADJ(p) (p)
+ 
+-#define CANCEL_REG_IP 32
++#define MC_PC gregs[REG_RIP]
+ 
+ #define CANARY canary2
+--- a/arch/x32/src/syscall_cp_fixup.c
++++ b/arch/x32/src/syscall_cp_fixup.c
+@@ -1,8 +1,6 @@
+ #include <sys/syscall.h>
+ 
+-#ifdef SHARED
+ __attribute__((__visibility__("hidden")))
+-#endif
+ long __syscall_cp_internal(volatile void*, long long, long long, long long, long long,
+                              long long, long long, long long);
+ 
+@@ -14,9 +12,7 @@ struct __timespec_kernel { long long tv_
+ 	ts->tv_nsec = __tsc(X)->tv_nsec; \
+ 	(X) = (unsigned long)ts; } } while(0)
+ 
+-#ifdef SHARED
+ __attribute__((__visibility__("hidden")))
+-#endif
+ long __syscall_cp_asm (volatile void * foo, long long n, long long a1, long long a2, long long a3,
+ 	                     long long a4, long long a5, long long a6)
+ {
+--- a/arch/x86_64/atomic.h
++++ /dev/null
+@@ -1,105 +0,0 @@
+-#ifndef _INTERNAL_ATOMIC_H
+-#define _INTERNAL_ATOMIC_H
+-
+-#include <stdint.h>
+-
+-static inline int a_ctz_64(uint64_t x)
+-{
+-	__asm__( "bsf %1,%0" : "=r"(x) : "r"(x) );
+-	return x;
+-}
+-
+-static inline int a_ctz_l(unsigned long x)
+-{
+-	__asm__( "bsf %1,%0" : "=r"(x) : "r"(x) );
+-	return x;
+-}
+-
+-static inline void a_and_64(volatile uint64_t *p, uint64_t v)
+-{
+-	__asm__( "lock ; and %1, %0"
+-			 : "=m"(*p) : "r"(v) : "memory" );
+-}
+-
+-static inline void a_or_64(volatile uint64_t *p, uint64_t v)
+-{
+-	__asm__( "lock ; or %1, %0"
+-			 : "=m"(*p) : "r"(v) : "memory" );
+-}
+-
+-static inline void a_or_l(volatile void *p, long v)
+-{
+-	__asm__( "lock ; or %1, %0"
+-		: "=m"(*(long *)p) : "r"(v) : "memory" );
+-}
+-
+-static inline void *a_cas_p(volatile void *p, void *t, void *s)
+-{
+-	__asm__( "lock ; cmpxchg %3, %1"
+-		: "=a"(t), "=m"(*(long *)p) : "a"(t), "r"(s) : "memory" );
+-	return t;
+-}
+-
+-static inline int a_cas(volatile int *p, int t, int s)
+-{
+-	__asm__( "lock ; cmpxchg %3, %1"
+-		: "=a"(t), "=m"(*p) : "a"(t), "r"(s) : "memory" );
+-	return t;
+-}
+-
+-static inline void a_or(volatile int *p, int v)
+-{
+-	__asm__( "lock ; or %1, %0"
+-		: "=m"(*p) : "r"(v) : "memory" );
+-}
+-
+-static inline void a_and(volatile int *p, int v)
+-{
+-	__asm__( "lock ; and %1, %0"
+-		: "=m"(*p) : "r"(v) : "memory" );
+-}
+-
+-static inline int a_swap(volatile int *x, int v)
+-{
+-	__asm__( "xchg %0, %1" : "=r"(v), "=m"(*x) : "0"(v) : "memory" );
+-	return v;
+-}
+-
+-static inline int a_fetch_add(volatile int *x, int v)
+-{
+-	__asm__( "lock ; xadd %0, %1" : "=r"(v), "=m"(*x) : "0"(v) : "memory" );
+-	return v;
+-}
+-
+-static inline void a_inc(volatile int *x)
+-{
+-	__asm__( "lock ; incl %0" : "=m"(*x) : "m"(*x) : "memory" );
+-}
+-
+-static inline void a_dec(volatile int *x)
+-{
+-	__asm__( "lock ; decl %0" : "=m"(*x) : "m"(*x) : "memory" );
+-}
+-
+-static inline void a_store(volatile int *p, int x)
+-{
+-	__asm__( "mov %1, %0 ; lock ; orl $0,(%%rsp)" : "=m"(*p) : "r"(x) : "memory" );
+-}
+-
+-static inline void a_spin()
+-{
+-	__asm__ __volatile__( "pause" : : : "memory" );
+-}
+-
+-static inline void a_barrier()
+-{
+-	__asm__ __volatile__( "" : : : "memory" );
+-}
+-
+-static inline void a_crash()
+-{
+-	__asm__ __volatile__( "hlt" : : : "memory" );
+-}
+-
+-
+-#endif
+--- /dev/null
++++ b/arch/x86_64/atomic_arch.h
+@@ -0,0 +1,107 @@
++#define a_ctz_64 a_ctz_64
++static inline int a_ctz_64(uint64_t x)
++{
++	__asm__( "bsf %1,%0" : "=r"(x) : "r"(x) );
++	return x;
++}
++
++#define a_and_64 a_and_64
++static inline void a_and_64(volatile uint64_t *p, uint64_t v)
++{
++	__asm__( "lock ; and %1, %0"
++			 : "=m"(*p) : "r"(v) : "memory" );
++}
++
++#define a_or_64 a_or_64
++static inline void a_or_64(volatile uint64_t *p, uint64_t v)
++{
++	__asm__( "lock ; or %1, %0"
++			 : "=m"(*p) : "r"(v) : "memory" );
++}
++
++#define a_or_l a_or_l
++static inline void a_or_l(volatile void *p, long v)
++{
++	__asm__( "lock ; or %1, %0"
++		: "=m"(*(long *)p) : "r"(v) : "memory" );
++}
++
++#define a_cas_p a_cas_p
++static inline void *a_cas_p(volatile void *p, void *t, void *s)
++{
++	__asm__( "lock ; cmpxchg %3, %1"
++		: "=a"(t), "=m"(*(long *)p) : "a"(t), "r"(s) : "memory" );
++	return t;
++}
++
++#define a_cas a_cas
++static inline int a_cas(volatile int *p, int t, int s)
++{
++	__asm__( "lock ; cmpxchg %3, %1"
++		: "=a"(t), "=m"(*p) : "a"(t), "r"(s) : "memory" );
++	return t;
++}
++
++#define a_or a_or
++static inline void a_or(volatile int *p, int v)
++{
++	__asm__( "lock ; or %1, %0"
++		: "=m"(*p) : "r"(v) : "memory" );
++}
++
++#define a_and a_and
++static inline void a_and(volatile int *p, int v)
++{
++	__asm__( "lock ; and %1, %0"
++		: "=m"(*p) : "r"(v) : "memory" );
++}
++
++#define a_swap a_swap
++static inline int a_swap(volatile int *x, int v)
++{
++	__asm__( "xchg %0, %1" : "=r"(v), "=m"(*x) : "0"(v) : "memory" );
++	return v;
++}
++
++#define a_fetch_add a_fetch_add
++static inline int a_fetch_add(volatile int *x, int v)
++{
++	__asm__( "lock ; xadd %0, %1" : "=r"(v), "=m"(*x) : "0"(v) : "memory" );
++	return v;
++}
++
++#define a_inc a_inc
++static inline void a_inc(volatile int *x)
++{
++	__asm__( "lock ; incl %0" : "=m"(*x) : "m"(*x) : "memory" );
++}
++
++#define a_dec a_dec
++static inline void a_dec(volatile int *x)
++{
++	__asm__( "lock ; decl %0" : "=m"(*x) : "m"(*x) : "memory" );
++}
++
++#define a_store a_store
++static inline void a_store(volatile int *p, int x)
++{
++	__asm__( "mov %1, %0 ; lock ; orl $0,(%%rsp)" : "=m"(*p) : "r"(x) : "memory" );
++}
++
++#define a_spin a_spin
++static inline void a_spin()
++{
++	__asm__ __volatile__( "pause" : : : "memory" );
++}
++
++#define a_barrier a_barrier
++static inline void a_barrier()
++{
++	__asm__ __volatile__( "" : : : "memory" );
++}
++
++#define a_crash a_crash
++static inline void a_crash()
++{
++	__asm__ __volatile__( "hlt" : : : "memory" );
++}
+--- a/arch/x86_64/pthread_arch.h
++++ b/arch/x86_64/pthread_arch.h
+@@ -7,4 +7,4 @@ static inline struct pthread *__pthread_
+ 
+ #define TP_ADJ(p) (p)
+ 
+-#define CANCEL_REG_IP 16
++#define MC_PC gregs[REG_RIP]
+--- a/configure
++++ b/configure
+@@ -9,6 +9,9 @@ VAR=VALUE.  See below for descriptions o
+ 
+ Defaults for the options are specified in brackets.
+ 
++Configuration:
++  --srcdir=DIR            source directory [detected]
++
+ Installation directories:
+   --prefix=PREFIX         main installation prefix [/usr/local/musl]
+   --exec-prefix=EPREFIX   installation prefix for executable files [PREFIX]
+@@ -117,6 +120,7 @@ CFLAGS_TRY=
+ LDFLAGS_AUTO=
+ LDFLAGS_TRY=
+ OPTIMIZE_GLOBS=
++srcdir=
+ prefix=/usr/local/musl
+ exec_prefix='$(prefix)'
+ bindir='$(exec_prefix)/bin'
+@@ -139,6 +143,7 @@ clang_wrapper=no
+ for arg ; do
+ case "$arg" in
+ --help) usage ;;
++--srcdir=*) srcdir=${arg#*=} ;;
+ --prefix=*) prefix=${arg#*=} ;;
+ --exec-prefix=*) exec_prefix=${arg#*=} ;;
+ --bindir=*) bindir=${arg#*=} ;;
+@@ -179,11 +184,23 @@ LIBCC=*) LIBCC=${arg#*=} ;;
+ esac
+ done
+ 
+-for i in prefix exec_prefix bindir libdir includedir syslibdir ; do
++for i in srcdir prefix exec_prefix bindir libdir includedir syslibdir ; do
+ stripdir $i
+ done
+ 
+ #
++# Get the source dir for out-of-tree builds
++#
++if test -z "$srcdir" ; then
++srcdir="${0%/configure}"
++stripdir srcdir
++fi
++abs_builddir="$(pwd)" || fail "$0: cannot determine working directory"
++abs_srcdir="$(cd $srcdir && pwd)" || fail "$0: invalid source directory $srcdir"
++test "$abs_srcdir" = "$abs_builddir" && srcdir=.
++test "$srcdir" != "." -a -f Makefile -a ! -h Makefile && fail "$0: Makefile already exists in the working directory"
++
++#
+ # Get a temp filename we can use
+ #
+ i=0
+@@ -263,11 +280,11 @@ fi
+ fi
+ 
+ if test "$gcc_wrapper" = yes ; then
+-tools="$tools tools/musl-gcc"
++tools="$tools obj/musl-gcc"
+ tool_libs="$tool_libs lib/musl-gcc.specs"
+ fi
+ if test "$clang_wrapper" = yes ; then
+-tools="$tools tools/musl-clang tools/ld.musl-clang"
++tools="$tools obj/musl-clang obj/ld.musl-clang"
+ fi
+ 
+ #
+@@ -321,7 +338,7 @@ __attribute__((__may_alias__))
+ #endif
+ x;
+ EOF
+-if $CC $CFLAGS_C99FSE -I./arch/$ARCH -I./include $CPPFLAGS $CFLAGS \
++if $CC $CFLAGS_C99FSE -I$srcdir/arch/$ARCH -I$srcdir/include $CPPFLAGS $CFLAGS \
+   -c -o /dev/null "$tmpc" >/dev/null 2>&1 ; then
+ printf "no\n"
+ else
+@@ -330,6 +347,13 @@ CFLAGS_C99FSE="$CFLAGS_C99FSE -D__may_al
+ fi
+ 
+ #
++# The GNU toolchain defaults to assuming unmarked files need an
++# executable stack, potentially exposing vulnerabilities in programs
++# linked with such object files. Fix this.
++#
++tryflag CFLAGS_C99FSE -Wa,--noexecstack
++
++#
+ # Check for options to disable stack protector, which needs to be
+ # disabled for a few early-bootstrap translation units. If not found,
+ # this is not an error; we assume the toolchain does not do ssp.
+@@ -430,11 +454,15 @@ tryflag CFLAGS_AUTO -fno-unwind-tables
+ tryflag CFLAGS_AUTO -fno-asynchronous-unwind-tables
+ 
+ #
+-# The GNU toolchain defaults to assuming unmarked files need an
+-# executable stack, potentially exposing vulnerabilities in programs
+-# linked with such object files. Fix this.
++# Attempt to put each function and each data object in its own
++# section. This both allows additional size optimizations at link
++# time and works around a dangerous class of compiler/assembler bugs
++# whereby relative address expressions are constant-folded by the
++# assembler even when one or more of the symbols involved is
++# replaceable. See gas pr 18561 and gcc pr 66609, 68178, etc.
+ #
+-tryflag CFLAGS_AUTO -Wa,--noexecstack
++tryflag CFLAGS_AUTO -ffunction-sections
++tryflag CFLAGS_AUTO -fdata-sections
+ 
+ #
+ # On x86, make sure we don't have incompatible instruction set
+@@ -489,7 +517,7 @@ int foo(void) { }
+ int bar(void) { fp = foo; return foo(); }
+ EOF
+ if $CC $CFLAGS_C99FSE $CPPFLAGS $CFLAGS \
+-  -DSHARED -fPIC -I./src/internal -include vis.h \
++  -DSHARED -fPIC -I$srcdir/src/internal -include vis.h \
+   -nostdlib -shared -Wl,-Bsymbolic-functions \
+   -o /dev/null "$tmpc" >/dev/null 2>&1 ; then
+ visibility=yes
+@@ -504,6 +532,16 @@ CFLAGS_AUTO="$CFLAGS_AUTO -include vis.h
+ CFLAGS_AUTO="${CFLAGS_AUTO# }"
+ fi
+ 
++# Reduce space lost to padding for alignment purposes by sorting data
++# objects according to their alignment reqirements. This approximates
++# optimal packing.
++tryldflag LDFLAGS_AUTO -Wl,--sort-section,alignment
++tryldflag LDFLAGS_AUTO -Wl,--sort-common
++
++# When linking shared library, drop dummy weak definitions that were
++# replaced by strong definitions from other translation units.
++tryldflag LDFLAGS_AUTO -Wl,--gc-sections
++
+ # Some patched GCC builds have these defaults messed up...
+ tryldflag LDFLAGS_AUTO -Wl,--hash-style=both
+ 
+@@ -513,6 +551,11 @@ tryldflag LDFLAGS_AUTO -Wl,--hash-style=
+ # runtime library; implementation error is also a possibility.
+ tryldflag LDFLAGS_AUTO -Wl,--no-undefined
+ 
++# Avoid exporting symbols from compiler runtime libraries. They
++# should be hidden anyway, but some toolchains including old gcc
++# versions built without shared library support and pcc are broken.
++tryldflag LDFLAGS_AUTO -Wl,--exclude-libs=ALL
++
+ test "$shared" = "no" || {
+ # Disable dynamic linking if ld is broken and can't do -Bsymbolic-functions
+ LDFLAGS_DUMMY=
+@@ -599,7 +642,7 @@ echo '#include <float.h>' > "$tmpc"
+ echo '#if LDBL_MANT_DIG == 53' >> "$tmpc"
+ echo 'typedef char ldcheck[9-(int)sizeof(long double)];' >> "$tmpc"
+ echo '#endif' >> "$tmpc"
+-if $CC $CFLAGS_C99FSE -I./arch/$ARCH -I./include $CPPFLAGS $CFLAGS \
++if $CC $CFLAGS_C99FSE -I$srcdir/arch/$ARCH -I$srcdir/include $CPPFLAGS $CFLAGS \
+   -c -o /dev/null "$tmpc" >/dev/null 2>&1 ; then
+ printf "yes\n"
+ else
+@@ -622,6 +665,7 @@ cat << EOF
+ ARCH = $ARCH
+ SUBARCH = $SUBARCH
+ ASMSUBARCH = $ASMSUBARCH
++srcdir = $srcdir
+ prefix = $prefix
+ exec_prefix = $exec_prefix
+ bindir = $bindir
+@@ -629,12 +673,14 @@ libdir = $libdir
+ includedir = $includedir
+ syslibdir = $syslibdir
+ CC = $CC
+-CFLAGS = $CFLAGS_AUTO $CFLAGS
++CFLAGS = $CFLAGS
++CFLAGS_AUTO = $CFLAGS_AUTO
+ CFLAGS_C99FSE = $CFLAGS_C99FSE
+ CFLAGS_MEMOPS = $CFLAGS_MEMOPS
+ CFLAGS_NOSSP = $CFLAGS_NOSSP
+ CPPFLAGS = $CPPFLAGS
+-LDFLAGS = $LDFLAGS_AUTO $LDFLAGS
++LDFLAGS = $LDFLAGS
++LDFLAGS_AUTO = $LDFLAGS_AUTO
+ CROSS_COMPILE = $CROSS_COMPILE
+ LIBCC = $LIBCC
+ OPTIMIZE_GLOBS = $OPTIMIZE_GLOBS
+@@ -648,4 +694,6 @@ test "x$cc_family" = xgcc && echo 'WRAPC
+ test "x$cc_family" = xclang && echo 'WRAPCC_CLANG = $(CC)'
+ exec 1>&3 3>&-
+ 
++test "$srcdir" = "." || ln -sf $srcdir/Makefile .
++
+ printf "done\n"
+--- a/crt/arm/crti.s
++++ b/crt/arm/crti.s
+@@ -1,3 +1,5 @@
++.syntax unified
++
+ .section .init
+ .global _init
+ .type _init,%function
+--- a/crt/arm/crtn.s
++++ b/crt/arm/crtn.s
+@@ -1,11 +1,9 @@
++.syntax unified
++
+ .section .init
+ 	pop {r0,lr}
+-	tst lr,#1
+-	moveq pc,lr
+ 	bx lr
+ 
+ .section .fini
+ 	pop {r0,lr}
+-	tst lr,#1
+-	moveq pc,lr
+ 	bx lr
+--- a/include/complex.h
++++ b/include/complex.h
+@@ -116,7 +116,7 @@ long double creall(long double complex);
+ 
+ #if __STDC_VERSION__ >= 201112L
+ #if defined(_Imaginary_I)
+-#define __CMPLX(x, y, t) ((t)(x) + _Imaginary_I*(t)(y)))
++#define __CMPLX(x, y, t) ((t)(x) + _Imaginary_I*(t)(y))
+ #elif defined(__clang__)
+ #define __CMPLX(x, y, t) (+(_Complex t){ (t)(x), (t)(y) })
+ #else
+--- a/include/netinet/tcp.h
++++ b/include/netinet/tcp.h
+@@ -41,7 +41,20 @@
+ #define TCP_CLOSING      11
+ 
+ #if defined(_GNU_SOURCE) || defined(_BSD_SOURCE)
++#define TCPOPT_EOL              0
++#define TCPOPT_NOP              1
++#define TCPOPT_MAXSEG           2
++#define TCPOPT_WINDOW           3
++#define TCPOPT_SACK_PERMITTED   4
++#define TCPOPT_SACK             5
++#define TCPOPT_TIMESTAMP        8
++#define TCPOLEN_SACK_PERMITTED  2
++#define TCPOLEN_WINDOW          3
++#define TCPOLEN_MAXSEG          4
++#define TCPOLEN_TIMESTAMP       10
++
+ #define SOL_TCP 6
++
+ #include <sys/types.h>
+ #include <sys/socket.h>
+ #include <stdint.h>
+--- a/src/env/__init_tls.c
++++ b/src/env/__init_tls.c
+@@ -8,9 +8,6 @@
+ #include "atomic.h"
+ #include "syscall.h"
+ 
+-#ifndef SHARED
+-static
+-#endif
+ int __init_tp(void *p)
+ {
+ 	pthread_t td = p;
+@@ -24,8 +21,6 @@ int __init_tp(void *p)
+ 	return 0;
+ }
+ 
+-#ifndef SHARED
+-
+ static struct builtin_tls {
+ 	char c;
+ 	struct pthread pt;
+@@ -33,33 +28,40 @@ static struct builtin_tls {
+ } builtin_tls[1];
+ #define MIN_TLS_ALIGN offsetof(struct builtin_tls, pt)
+ 
+-struct tls_image {
+-	void *image;
+-	size_t len, size, align;
+-} __static_tls;
+-
+-#define T __static_tls
++static struct tls_module main_tls;
+ 
+ void *__copy_tls(unsigned char *mem)
+ {
+ 	pthread_t td;
+-	if (!T.image) return mem;
+-	void **dtv = (void *)mem;
+-	dtv[0] = (void *)1;
++	struct tls_module *p;
++	size_t i;
++	void **dtv;
++
+ #ifdef TLS_ABOVE_TP
+-	mem += sizeof(void *) * 2;
+-	mem += -((uintptr_t)mem + sizeof(struct pthread)) & (T.align-1);
++	dtv = (void **)(mem + libc.tls_size) - (libc.tls_cnt + 1);
++
++	mem += -((uintptr_t)mem + sizeof(struct pthread)) & (libc.tls_align-1);
+ 	td = (pthread_t)mem;
+ 	mem += sizeof(struct pthread);
++
++	for (i=1, p=libc.tls_head; p; i++, p=p->next) {
++		dtv[i] = mem + p->offset;
++		memcpy(dtv[i], p->image, p->len);
++	}
+ #else
++	dtv = (void **)mem;
++
+ 	mem += libc.tls_size - sizeof(struct pthread);
+-	mem -= (uintptr_t)mem & (T.align-1);
++	mem -= (uintptr_t)mem & (libc.tls_align-1);
+ 	td = (pthread_t)mem;
+-	mem -= T.size;
++
++	for (i=1, p=libc.tls_head; p; i++, p=p->next) {
++		dtv[i] = mem - p->offset;
++		memcpy(dtv[i], p->image, p->len);
++	}
+ #endif
++	dtv[0] = (void *)libc.tls_cnt;
+ 	td->dtv = td->dtv_copy = dtv;
+-	dtv[1] = mem;
+-	memcpy(mem, T.image, T.len);
+ 	return td;
+ }
+ 
+@@ -69,7 +71,7 @@ typedef Elf32_Phdr Phdr;
+ typedef Elf64_Phdr Phdr;
+ #endif
+ 
+-void __init_tls(size_t *aux)
++static void static_init_tls(size_t *aux)
+ {
+ 	unsigned char *p;
+ 	size_t n;
+@@ -86,16 +88,24 @@ void __init_tls(size_t *aux)
+ 	}
+ 
+ 	if (tls_phdr) {
+-		T.image = (void *)(base + tls_phdr->p_vaddr);
+-		T.len = tls_phdr->p_filesz;
+-		T.size = tls_phdr->p_memsz;
+-		T.align = tls_phdr->p_align;
++		main_tls.image = (void *)(base + tls_phdr->p_vaddr);
++		main_tls.len = tls_phdr->p_filesz;
++		main_tls.size = tls_phdr->p_memsz;
++		main_tls.align = tls_phdr->p_align;
++		libc.tls_cnt = 1;
++		libc.tls_head = &main_tls;
+ 	}
+ 
+-	T.size += (-T.size - (uintptr_t)T.image) & (T.align-1);
+-	if (T.align < MIN_TLS_ALIGN) T.align = MIN_TLS_ALIGN;
++	main_tls.size += (-main_tls.size - (uintptr_t)main_tls.image)
++		& (main_tls.align-1);
++	if (main_tls.align < MIN_TLS_ALIGN) main_tls.align = MIN_TLS_ALIGN;
++#ifndef TLS_ABOVE_TP
++	main_tls.offset = main_tls.size;
++#endif
+ 
+-	libc.tls_size = 2*sizeof(void *)+T.size+T.align+sizeof(struct pthread)
++	libc.tls_align = main_tls.align;
++	libc.tls_size = 2*sizeof(void *) + sizeof(struct pthread)
++		+ main_tls.size + main_tls.align
+ 		+ MIN_TLS_ALIGN-1 & -MIN_TLS_ALIGN;
+ 
+ 	if (libc.tls_size > sizeof builtin_tls) {
+@@ -117,6 +127,5 @@ void __init_tls(size_t *aux)
+ 	if (__init_tp(__copy_tls(mem)) < 0)
+ 		a_crash();
+ }
+-#else
+-void __init_tls(size_t *auxv) { }
+-#endif
++
++weak_alias(static_init_tls, __init_tls);
+--- a/src/env/__libc_start_main.c
++++ b/src/env/__libc_start_main.c
+@@ -8,21 +8,17 @@
+ 
+ void __init_tls(size_t *);
+ 
+-#ifndef SHARED
+-static void dummy() {}
++static void dummy(void) {}
+ weak_alias(dummy, _init);
+-extern void (*const __init_array_start)() __attribute__((weak));
+-extern void (*const __init_array_end)() __attribute__((weak));
+-#endif
++
++__attribute__((__weak__, __visibility__("hidden")))
++extern void (*const __init_array_start)(void), (*const __init_array_end)(void);
+ 
+ static void dummy1(void *p) {}
+ weak_alias(dummy1, __init_ssp);
+ 
+ #define AUX_CNT 38
+ 
+-#ifndef SHARED
+-static
+-#endif
+ void __init_libc(char **envp, char *pn)
+ {
+ 	size_t i, *auxv, aux[AUX_CNT] = { 0 };
+@@ -57,20 +53,22 @@ void __init_libc(char **envp, char *pn)
+ 	libc.secure = 1;
+ }
+ 
+-int __libc_start_main(int (*main)(int,char **,char **), int argc, char **argv)
++static void libc_start_init(void)
+ {
+-	char **envp = argv+argc+1;
+-
+-#ifndef SHARED
+-	__init_libc(envp, argv[0]);
+ 	_init();
+ 	uintptr_t a = (uintptr_t)&__init_array_start;
+ 	for (; a<(uintptr_t)&__init_array_end; a+=sizeof(void(*)()))
+ 		(*(void (**)())a)();
+-#else
+-	void __libc_start_init(void);
++}
++
++weak_alias(libc_start_init, __libc_start_init);
++
++int __libc_start_main(int (*main)(int,char **,char **), int argc, char **argv)
++{
++	char **envp = argv+argc+1;
++
++	__init_libc(envp, argv[0]);
+ 	__libc_start_init();
+-#endif
+ 
+ 	/* Pass control to the application */
+ 	exit(main(argc, argv, envp));
+--- a/src/env/__reset_tls.c
++++ b/src/env/__reset_tls.c
+@@ -1,21 +1,16 @@
+-#ifndef SHARED
+-
+ #include <string.h>
+ #include "pthread_impl.h"
+-
+-extern struct tls_image {
+-	void *image;
+-	size_t len, size, align;
+-} __static_tls;
+-
+-#define T __static_tls
++#include "libc.h"
+ 
+ void __reset_tls()
+ {
+-	if (!T.size) return;
+ 	pthread_t self = __pthread_self();
+-	memcpy(self->dtv[1], T.image, T.len);
+-	memset((char *)self->dtv[1]+T.len, 0, T.size-T.len);
++	struct tls_module *p;
++	size_t i, n = (size_t)self->dtv[0];
++	if (n) for (p=libc.tls_head, i=1; i<=n; i++, p=p->next) {
++		if (!self->dtv[i]) continue;
++		memcpy(self->dtv[i], p->image, p->len);
++		memset((char *)self->dtv[i]+p->len, 0,
++			p->size - p->len);
++	}
+ }
+-
+-#endif
+--- a/src/env/__stack_chk_fail.c
++++ b/src/env/__stack_chk_fail.c
+@@ -17,16 +17,7 @@ void __stack_chk_fail(void)
+ 	a_crash();
+ }
+ 
+-#ifdef SHARED
+-
+ __attribute__((__visibility__("hidden")))
+-void __stack_chk_fail_local(void)
+-{
+-	a_crash();
+-}
+-
+-#else
++void __stack_chk_fail_local(void);
+ 
+ weak_alias(__stack_chk_fail, __stack_chk_fail_local);
+-
+-#endif
+--- /dev/null
++++ b/src/exit/arm/__aeabi_atexit.c
+@@ -0,0 +1,6 @@
++int __cxa_atexit(void (*func)(void *), void *arg, void *dso);
++
++int __aeabi_atexit (void *obj, void (*func) (void *), void *d)
++{
++	return __cxa_atexit (func, obj, d);
++}
+--- a/src/exit/exit.c
++++ b/src/exit/exit.c
+@@ -10,25 +10,25 @@ static void dummy()
+  * as a consequence of linking either __toread.c or __towrite.c. */
+ weak_alias(dummy, __funcs_on_exit);
+ weak_alias(dummy, __stdio_exit);
+-
+-#ifndef SHARED
+ weak_alias(dummy, _fini);
+-extern void (*const __fini_array_start)() __attribute__((weak));
+-extern void (*const __fini_array_end)() __attribute__((weak));
+-#endif
+ 
+-_Noreturn void exit(int code)
+-{
+-	__funcs_on_exit();
++__attribute__((__weak__, __visibility__("hidden")))
++extern void (*const __fini_array_start)(void), (*const __fini_array_end)(void);
+ 
+-#ifndef SHARED
++static void libc_exit_fini(void)
++{
+ 	uintptr_t a = (uintptr_t)&__fini_array_end;
+ 	for (; a>(uintptr_t)&__fini_array_start; a-=sizeof(void(*)()))
+ 		(*(void (**)())(a-sizeof(void(*)())))();
+ 	_fini();
+-#endif
++}
+ 
+-	__stdio_exit();
++weak_alias(libc_exit_fini, __libc_exit_fini);
+ 
++_Noreturn void exit(int code)
++{
++	__funcs_on_exit();
++	__libc_exit_fini();
++	__stdio_exit();
+ 	_Exit(code);
+ }
+--- /dev/null
++++ b/src/fenv/arm/fenv-hf.S
+@@ -0,0 +1,69 @@
++#if __ARM_PCS_VFP
++
++.syntax unified
++.fpu vfp
++
++.global fegetround
++.type fegetround,%function
++fegetround:
++	fmrx r0, fpscr
++	and r0, r0, #0xc00000
++	bx lr
++
++.global __fesetround
++.type __fesetround,%function
++__fesetround:
++	fmrx r3, fpscr
++	bic r3, r3, #0xc00000
++	orr r3, r3, r0
++	fmxr fpscr, r3
++	mov r0, #0
++	bx lr
++
++.global fetestexcept
++.type fetestexcept,%function
++fetestexcept:
++	and r0, r0, #0x1f
++	fmrx r3, fpscr
++	and r0, r0, r3
++	bx lr
++
++.global feclearexcept
++.type feclearexcept,%function
++feclearexcept:
++	and r0, r0, #0x1f
++	fmrx r3, fpscr
++	bic r3, r3, r0
++	fmxr fpscr, r3
++	mov r0, #0
++	bx lr
++
++.global feraiseexcept
++.type feraiseexcept,%function
++feraiseexcept:
++	and r0, r0, #0x1f
++	fmrx r3, fpscr
++	orr r3, r3, r0
++	fmxr fpscr, r3
++	mov r0, #0
++	bx lr
++
++.global fegetenv
++.type fegetenv,%function
++fegetenv:
++	fmrx r3, fpscr
++	str r3, [r0]
++	mov r0, #0
++	bx lr
++
++.global fesetenv
++.type fesetenv,%function
++fesetenv:
++	cmn r0, #1
++	moveq r3, #0
++	ldrne r3, [r0]
++	fmxr fpscr, r3
++	mov r0, #0
++	bx lr
++
++#endif
+--- /dev/null
++++ b/src/fenv/arm/fenv.c
+@@ -0,0 +1,3 @@
++#if !__ARM_PCS_VFP
++#include "../fenv.c"
++#endif
+--- a/src/fenv/armebhf/fenv.sub
++++ /dev/null
+@@ -1 +0,0 @@
+-../armhf/fenv.s
+--- a/src/fenv/armhf/fenv.s
++++ /dev/null
+@@ -1,64 +0,0 @@
+-.fpu vfp
+-
+-.global fegetround
+-.type fegetround,%function
+-fegetround:
+-	mrc p10, 7, r0, cr1, cr0, 0
+-	and r0, r0, #0xc00000
+-	bx lr
+-
+-.global __fesetround
+-.type __fesetround,%function
+-__fesetround:
+-	mrc p10, 7, r3, cr1, cr0, 0
+-	bic r3, r3, #0xc00000
+-	orr r3, r3, r0
+-	mcr p10, 7, r3, cr1, cr0, 0
+-	mov r0, #0
+-	bx lr
+-
+-.global fetestexcept
+-.type fetestexcept,%function
+-fetestexcept:
+-	and r0, r0, #0x1f
+-	mrc p10, 7, r3, cr1, cr0, 0
+-	and r0, r0, r3
+-	bx lr
+-
+-.global feclearexcept
+-.type feclearexcept,%function
+-feclearexcept:
+-	and r0, r0, #0x1f
+-	mrc p10, 7, r3, cr1, cr0, 0
+-	bic r3, r3, r0
+-	mcr p10, 7, r3, cr1, cr0, 0
+-	mov r0, #0
+-	bx lr
+-
+-.global feraiseexcept
+-.type feraiseexcept,%function
+-feraiseexcept:
+-	and r0, r0, #0x1f
+-	mrc p10, 7, r3, cr1, cr0, 0
+-	orr r3, r3, r0
+-	mcr p10, 7, r3, cr1, cr0, 0
+-	mov r0, #0
+-	bx lr
+-
+-.global fegetenv
+-.type fegetenv,%function
+-fegetenv:
+-	mrc p10, 7, r3, cr1, cr0, 0
+-	str r3, [r0]
+-	mov r0, #0
+-	bx lr
+-
+-.global fesetenv
+-.type fesetenv,%function
+-fesetenv:
+-	cmn r0, #1
+-	moveq r3, #0
+-	ldrne r3, [r0]
+-	mcr p10, 7, r3, cr1, cr0, 0
+-	mov r0, #0
+-	bx lr
+--- a/src/fenv/armhf/fenv.sub
++++ /dev/null
+@@ -1 +0,0 @@
+-fenv.s
+--- a/src/fenv/mips-sf/fenv.sub
++++ /dev/null
+@@ -1 +0,0 @@
+-../fenv.c
+--- /dev/null
++++ b/src/fenv/mips/fenv-sf.c
+@@ -0,0 +1,3 @@
++#ifdef __mips_soft_float
++#include "../fenv.c"
++#endif
+--- /dev/null
++++ b/src/fenv/mips/fenv.S
+@@ -0,0 +1,71 @@
++#ifndef __mips_soft_float
++
++.set noreorder
++
++.global feclearexcept
++.type  feclearexcept,@function
++feclearexcept:
++	and     $4, $4, 0x7c
++	cfc1    $5, $31
++	or      $5, $5, $4
++	xor     $5, $5, $4
++	ctc1    $5, $31
++	jr      $ra
++	li      $2, 0
++
++.global feraiseexcept
++.type  feraiseexcept,@function
++feraiseexcept:
++	and     $4, $4, 0x7c
++	cfc1    $5, $31
++	or      $5, $5, $4
++	ctc1    $5, $31
++	jr      $ra
++	li      $2, 0
++
++.global fetestexcept
++.type  fetestexcept,@function
++fetestexcept:
++	and     $4, $4, 0x7c
++	cfc1    $2, $31
++	jr      $ra
++	and     $2, $2, $4
++
++.global fegetround
++.type  fegetround,@function
++fegetround:
++	cfc1    $2, $31
++	jr      $ra
++	andi    $2, $2, 3
++
++.global __fesetround
++.type __fesetround,@function
++__fesetround:
++	cfc1    $5, $31
++	li      $6, -4
++	and     $5, $5, $6
++	or      $5, $5, $4
++	ctc1    $5, $31
++	jr      $ra
++	li      $2, 0
++
++.global fegetenv
++.type  fegetenv,@function
++fegetenv:
++	cfc1    $5, $31
++	sw      $5, 0($4)
++	jr      $ra
++	li      $2, 0
++
++.global fesetenv
++.type  fesetenv,@function
++fesetenv:
++	addiu   $5, $4, 1
++	beq     $5, $0, 1f
++	 nop
++	lw      $5, 0($4)
++1:	ctc1    $5, $31
++	jr      $ra
++	li      $2, 0
++
++#endif
+--- a/src/fenv/mips/fenv.s
++++ /dev/null
+@@ -1,67 +0,0 @@
+-.set noreorder
+-
+-.global feclearexcept
+-.type  feclearexcept,@function
+-feclearexcept:
+-	and     $4, $4, 0x7c
+-	cfc1    $5, $31
+-	or      $5, $5, $4
+-	xor     $5, $5, $4
+-	ctc1    $5, $31
+-	jr      $ra
+-	li      $2, 0
+-
+-.global feraiseexcept
+-.type  feraiseexcept,@function
+-feraiseexcept:
+-	and     $4, $4, 0x7c
+-	cfc1    $5, $31
+-	or      $5, $5, $4
+-	ctc1    $5, $31
+-	jr      $ra
+-	li      $2, 0
+-
+-.global fetestexcept
+-.type  fetestexcept,@function
+-fetestexcept:
+-	and     $4, $4, 0x7c
+-	cfc1    $2, $31
+-	jr      $ra
+-	and     $2, $2, $4
+-
+-.global fegetround
+-.type  fegetround,@function
+-fegetround:
+-	cfc1    $2, $31
+-	jr      $ra
+-	andi    $2, $2, 3
+-
+-.global __fesetround
+-.type __fesetround,@function
+-__fesetround:
+-	cfc1    $5, $31
+-	li      $6, -4
+-	and     $5, $5, $6
+-	or      $5, $5, $4
+-	ctc1    $5, $31
+-	jr      $ra
+-	li      $2, 0
+-
+-.global fegetenv
+-.type  fegetenv,@function
+-fegetenv:
+-	cfc1    $5, $31
+-	sw      $5, 0($4)
+-	jr      $ra
+-	li      $2, 0
+-
+-.global fesetenv
+-.type  fesetenv,@function
+-fesetenv:
+-	addiu   $5, $4, 1
+-	beq     $5, $0, 1f
+-	 nop
+-	lw      $5, 0($4)
+-1:	ctc1    $5, $31
+-	jr      $ra
+-	li      $2, 0
+--- a/src/fenv/mipsel-sf/fenv.sub
++++ /dev/null
+@@ -1 +0,0 @@
+-../fenv.c
+--- a/src/fenv/sh-nofpu/fenv.sub
++++ /dev/null
+@@ -1 +0,0 @@
+-../fenv.c
+--- /dev/null
++++ b/src/fenv/sh/fenv-nofpu.c
+@@ -0,0 +1,3 @@
++#if !__SH_FPU_ANY__ && !__SH4__
++#include "../fenv.c"
++#endif
+--- /dev/null
++++ b/src/fenv/sh/fenv.S
+@@ -0,0 +1,78 @@
++#if __SH_FPU_ANY__ || __SH4__
++
++.global fegetround
++.type   fegetround, @function
++fegetround:
++	sts fpscr, r0
++	rts
++	 and #3, r0
++
++.global __fesetround
++.type   __fesetround, @function
++__fesetround:
++	sts fpscr, r0
++	or  r4, r0
++	lds r0, fpscr
++	rts
++	 mov #0, r0
++
++.global fetestexcept
++.type   fetestexcept, @function
++fetestexcept:
++	sts fpscr, r0
++	and r4, r0
++	rts
++	 and #0x7c, r0
++
++.global feclearexcept
++.type   feclearexcept, @function
++feclearexcept:
++	mov r4, r0
++	and #0x7c, r0
++	not r0, r4
++	sts fpscr, r0
++	and r4, r0
++	lds r0, fpscr
++	rts
++	 mov #0, r0
++
++.global feraiseexcept
++.type   feraiseexcept, @function
++feraiseexcept:
++	mov r4, r0
++	and #0x7c, r0
++	sts fpscr, r4
++	or  r4, r0
++	lds r0, fpscr
++	rts
++	 mov #0, r0
++
++.global fegetenv
++.type   fegetenv, @function
++fegetenv:
++	sts fpscr, r0
++	mov.l r0, @r4
++	rts
++	 mov #0, r0
++
++.global fesetenv
++.type   fesetenv, @function
++fesetenv:
++	mov r4, r0
++	cmp/eq #-1, r0
++	bf 1f
++
++	! the default environment is complicated by the fact that we need to
++	! preserve the current precision bit, which we do not know a priori
++	sts fpscr, r0
++	mov #8, r1
++	swap.w r1, r1
++	bra 2f
++	 and r1, r0
++
++1:	mov.l @r4, r0      ! non-default environment
++2:	lds r0, fpscr
++	rts
++	 mov #0, r0
++
++#endif
+--- a/src/fenv/sh/fenv.s
++++ /dev/null
+@@ -1,74 +0,0 @@
+-.global fegetround
+-.type   fegetround, @function
+-fegetround:
+-	sts fpscr, r0
+-	rts
+-	 and #3, r0
+-
+-.global __fesetround
+-.type   __fesetround, @function
+-__fesetround:
+-	sts fpscr, r0
+-	or  r4, r0
+-	lds r0, fpscr
+-	rts
+-	 mov #0, r0
+-
+-.global fetestexcept
+-.type   fetestexcept, @function
+-fetestexcept:
+-	sts fpscr, r0
+-	and r4, r0
+-	rts
+-	 and #0x7c, r0
+-
+-.global feclearexcept
+-.type   feclearexcept, @function
+-feclearexcept:
+-	mov r4, r0
+-	and #0x7c, r0
+-	not r0, r4
+-	sts fpscr, r0
+-	and r4, r0
+-	lds r0, fpscr
+-	rts
+-	 mov #0, r0
+-
+-.global feraiseexcept
+-.type   feraiseexcept, @function
+-feraiseexcept:
+-	mov r4, r0
+-	and #0x7c, r0
+-	sts fpscr, r4
+-	or  r4, r0
+-	lds r0, fpscr
+-	rts
+-	 mov #0, r0
+-
+-.global fegetenv
+-.type   fegetenv, @function
+-fegetenv:
+-	sts fpscr, r0
+-	mov.l r0, @r4
+-	rts
+-	 mov #0, r0
+-
+-.global fesetenv
+-.type   fesetenv, @function
+-fesetenv:
+-	mov r4, r0
+-	cmp/eq #-1, r0
+-	bf 1f
+-
+-	! the default environment is complicated by the fact that we need to
+-	! preserve the current precision bit, which we do not know a priori
+-	sts fpscr, r0
+-	mov #8, r1
+-	swap.w r1, r1
+-	bra 2f
+-	 and r1, r0
+-
+-1:	mov.l @r4, r0      ! non-default environment
+-2:	lds r0, fpscr
+-	rts
+-	 mov #0, r0
+--- a/src/fenv/sheb-nofpu/fenv.sub
++++ /dev/null
+@@ -1 +0,0 @@
+-../fenv.c
+--- a/src/internal/arm/syscall.s
++++ b/src/internal/arm/syscall.s
+@@ -1,3 +1,4 @@
++.syntax unified
+ .global __syscall
+ .hidden __syscall
+ .type __syscall,%function
+@@ -11,6 +12,4 @@ __syscall:
+ 	ldmfd ip,{r3,r4,r5,r6}
+ 	svc 0
+ 	ldmfd sp!,{r4,r5,r6,r7}
+-	tst lr,#1
+-	moveq pc,lr
+ 	bx lr
+--- /dev/null
++++ b/src/internal/atomic.h
+@@ -0,0 +1,275 @@
++#ifndef _ATOMIC_H
++#define _ATOMIC_H
++
++#include <stdint.h>
++
++#include "atomic_arch.h"
++
++#ifdef a_ll
++
++#ifndef a_pre_llsc
++#define a_pre_llsc()
++#endif
++
++#ifndef a_post_llsc
++#define a_post_llsc()
++#endif
++
++#ifndef a_cas
++#define a_cas a_cas
++static inline int a_cas(volatile int *p, int t, int s)
++{
++	int old;
++	a_pre_llsc();
++	do old = a_ll(p);
++	while (old==t && !a_sc(p, s));
++	a_post_llsc();
++	return old;
++}
++#endif
++
++#ifndef a_swap
++#define a_swap a_swap
++static inline int a_swap(volatile int *p, int v)
++{
++	int old;
++	a_pre_llsc();
++	do old = a_ll(p);
++	while (!a_sc(p, v));
++	a_post_llsc();
++	return old;
++}
++#endif
++
++#ifndef a_fetch_add
++#define a_fetch_add a_fetch_add
++static inline int a_fetch_add(volatile int *p, int v)
++{
++	int old;
++	a_pre_llsc();
++	do old = a_ll(p);
++	while (!a_sc(p, (unsigned)old + v));
++	a_post_llsc();
++	return old;
++}
++#endif
++
++#ifndef a_fetch_and
++#define a_fetch_and a_fetch_and
++static inline int a_fetch_and(volatile int *p, int v)
++{
++	int old;
++	a_pre_llsc();
++	do old = a_ll(p);
++	while (!a_sc(p, old & v));
++	a_post_llsc();
++	return old;
++}
++#endif
++
++#ifndef a_fetch_or
++#define a_fetch_or a_fetch_or
++static inline int a_fetch_or(volatile int *p, int v)
++{
++	int old;
++	a_pre_llsc();
++	do old = a_ll(p);
++	while (!a_sc(p, old | v));
++	a_post_llsc();
++	return old;
++}
++#endif
++
++#endif
++
++#ifndef a_cas
++#error missing definition of a_cas
++#endif
++
++#ifndef a_swap
++#define a_swap a_swap
++static inline int a_swap(volatile int *p, int v)
++{
++	int old;
++	do old = *p;
++	while (a_cas(p, old, v) != old);
++	return old;
++}
++#endif
++
++#ifndef a_fetch_add
++#define a_fetch_add a_fetch_add
++static inline int a_fetch_add(volatile int *p, int v)
++{
++	int old;
++	do old = *p;
++	while (a_cas(p, old, (unsigned)old+v) != old);
++	return old;
++}
++#endif
++
++#ifndef a_fetch_and
++#define a_fetch_and a_fetch_and
++static inline int a_fetch_and(volatile int *p, int v)
++{
++	int old;
++	do old = *p;
++	while (a_cas(p, old, old&v) != old);
++	return old;
++}
++#endif
++#ifndef a_fetch_or
++#define a_fetch_or a_fetch_or
++static inline int a_fetch_or(volatile int *p, int v)
++{
++	int old;
++	do old = *p;
++	while (a_cas(p, old, old|v) != old);
++	return old;
++}
++#endif
++
++#ifndef a_and
++#define a_and a_and
++static inline void a_and(volatile int *p, int v)
++{
++	a_fetch_and(p, v);
++}
++#endif
++
++#ifndef a_or
++#define a_or a_or
++static inline void a_or(volatile int *p, int v)
++{
++	a_fetch_or(p, v);
++}
++#endif
++
++#ifndef a_inc
++#define a_inc a_inc
++static inline void a_inc(volatile int *p)
++{
++	a_fetch_add(p, 1);
++}
++#endif
++
++#ifndef a_dec
++#define a_dec a_dec
++static inline void a_dec(volatile int *p)
++{
++	a_fetch_add(p, -1);
++}
++#endif
++
++#ifndef a_store
++#define a_store a_store
++static inline void a_store(volatile int *p, int v)
++{
++#ifdef a_barrier
++	a_barrier();
++	*p = v;
++	a_barrier();
++#else
++	a_swap(p, v);
++#endif
++}
++#endif
++
++#ifndef a_barrier
++#define a_barrier a_barrier
++static void a_barrier()
++{
++	volatile int tmp = 0;
++	a_cas(&tmp, 0, 0);
++}
++#endif
++
++#ifndef a_spin
++#define a_spin a_barrier
++#endif
++
++#ifndef a_and_64
++#define a_and_64 a_and_64
++static inline void a_and_64(volatile uint64_t *p, uint64_t v)
++{
++	union { uint64_t v; uint32_t r[2]; } u = { v };
++	if (u.r[0]+1) a_and((int *)p, u.r[0]);
++	if (u.r[1]+1) a_and((int *)p+1, u.r[1]);
++}
++#endif
++
++#ifndef a_or_64
++#define a_or_64 a_or_64
++static inline void a_or_64(volatile uint64_t *p, uint64_t v)
++{
++	union { uint64_t v; uint32_t r[2]; } u = { v };
++	if (u.r[0]) a_or((int *)p, u.r[0]);
++	if (u.r[1]) a_or((int *)p+1, u.r[1]);
++}
++#endif
++
++#ifndef a_cas_p
++#define a_cas_p a_cas_p
++static inline void *a_cas_p(volatile void *p, void *t, void *s)
++{
++	return (void *)a_cas((volatile int *)p, (int)t, (int)s);
++}
++#endif
++
++#ifndef a_or_l
++#define a_or_l a_or_l
++static inline void a_or_l(volatile void *p, long v)
++{
++	if (sizeof(long) == sizeof(int)) a_or(p, v);
++	else a_or_64(p, v);
++}
++#endif
++
++#ifndef a_crash
++#define a_crash a_crash
++static inline void a_crash()
++{
++	*(volatile char *)0=0;
++}
++#endif
++
++#ifndef a_ctz_64
++#define a_ctz_64 a_ctz_64
++static inline int a_ctz_64(uint64_t x)
++{
++	static const char debruijn64[64] = {
++		0, 1, 2, 53, 3, 7, 54, 27, 4, 38, 41, 8, 34, 55, 48, 28,
++		62, 5, 39, 46, 44, 42, 22, 9, 24, 35, 59, 56, 49, 18, 29, 11,
++		63, 52, 6, 26, 37, 40, 33, 47, 61, 45, 43, 21, 23, 58, 17, 10,
++		51, 25, 36, 32, 60, 20, 57, 16, 50, 31, 19, 15, 30, 14, 13, 12
++	};
++	static const char debruijn32[32] = {
++		0, 1, 23, 2, 29, 24, 19, 3, 30, 27, 25, 11, 20, 8, 4, 13,
++		31, 22, 28, 18, 26, 10, 7, 12, 21, 17, 9, 6, 16, 5, 15, 14
++	};
++	if (sizeof(long) < 8) {
++		uint32_t y = x;
++		if (!y) {
++			y = x>>32;
++			return 32 + debruijn32[(y&-y)*0x076be629 >> 27];
++		}
++		return debruijn32[(y&-y)*0x076be629 >> 27];
++	}
++	return debruijn64[(x&-x)*0x022fdd63cc95386dull >> 58];
++}
++#endif
++
++#ifndef a_ctz_l
++#define a_ctz_l a_ctz_l
++static inline int a_ctz_l(unsigned long x)
++{
++	static const char debruijn32[32] = {
++		0, 1, 23, 2, 29, 24, 19, 3, 30, 27, 25, 11, 20, 8, 4, 13,
++		31, 22, 28, 18, 26, 10, 7, 12, 21, 17, 9, 6, 16, 5, 15, 14
++	};
++	if (sizeof(long) == 8) return a_ctz_64(x);
++	return debruijn32[(x&-x)*0x076be629 >> 27];
++}
++#endif
++
++#endif
+--- a/src/internal/dynlink.h
++++ b/src/internal/dynlink.h
+@@ -64,6 +64,10 @@ struct fdpic_dummy_loadmap {
+ #define DL_FDPIC 0
+ #endif
+ 
++#ifndef DL_NOMMU_SUPPORT
++#define DL_NOMMU_SUPPORT 0
++#endif
++
+ #if !DL_FDPIC
+ #define IS_RELATIVE(x,s) ( \
+ 	(R_TYPE(x) == REL_RELATIVE) || \
+--- a/src/internal/libc.h
++++ b/src/internal/libc.h
+@@ -11,13 +11,20 @@ struct __locale_struct {
+ 	const struct __locale_map *volatile cat[6];
+ };
+ 
++struct tls_module {
++	struct tls_module *next;
++	void *image;
++	size_t len, size, align, offset;
++};
++
+ struct __libc {
+ 	int can_do_threads;
+ 	int threaded;
+ 	int secure;
+ 	volatile int threads_minus_1;
+ 	size_t *auxv;
+-	size_t tls_size;
++	struct tls_module *tls_head;
++	size_t tls_size, tls_align, tls_cnt;
+ 	size_t page_size;
+ 	struct __locale_struct global_locale;
+ };
+--- a/src/internal/syscall.h
++++ b/src/internal/syscall.h
+@@ -17,9 +17,7 @@
+ typedef long syscall_arg_t;
+ #endif
+ 
+-#ifdef SHARED
+ __attribute__((visibility("hidden")))
+-#endif
+ long __syscall_ret(unsigned long), __syscall(syscall_arg_t, ...),
+ 	__syscall_cp(syscall_arg_t, syscall_arg_t, syscall_arg_t, syscall_arg_t,
+ 	             syscall_arg_t, syscall_arg_t, syscall_arg_t);
+--- a/src/internal/version.c
++++ b/src/internal/version.c
+@@ -1,12 +1,9 @@
+-#ifdef SHARED
+-
+ #include "version.h"
+ 
+ static const char version[] = VERSION;
+ 
++__attribute__((__visibility__("hidden")))
+ const char *__libc_get_version()
+ {
+ 	return version;
+ }
+-
+-#endif
+--- a/src/internal/vis.h
++++ b/src/internal/vis.h
+@@ -4,10 +4,9 @@
+  * override default visibilities to reduce the size and performance costs
+  * of position-independent code. */
+ 
+-#ifndef CRT
+-#ifdef SHARED
++#if !defined(CRT) && !defined(__ASSEMBLER__)
+ 
+-/* For shared libc.so, all symbols should be protected, but some toolchains
++/* Conceptually, all symbols should be protected, but some toolchains
+  * fail to support copy relocations for protected data, so exclude all
+  * exported data symbols. */
+ 
+@@ -25,16 +24,4 @@ extern char *optarg, **environ, **__envi
+ 
+ #pragma GCC visibility push(protected)
+ 
+-#elif defined(__PIC__)
+-
+-/* If building static libc.a as position-independent code, try to make
+- * everything hidden except possibly-undefined weak references. */
+-
+-__attribute__((__visibility__("default")))
+-extern void (*const __init_array_start)(), (*const __init_array_end)(),
+-	(*const __fini_array_start)(), (*const __fini_array_end)();
+-
+-#pragma GCC visibility push(hidden)
+-
+-#endif
+ #endif
+--- a/src/ldso/arm/dlsym.s
++++ b/src/ldso/arm/dlsym.s
+@@ -1,3 +1,4 @@
++.syntax unified
+ .text
+ .global dlsym
+ .hidden __dlsym
+--- /dev/null
++++ b/src/ldso/arm/find_exidx.c
+@@ -0,0 +1,42 @@
++#define _GNU_SOURCE
++#include <link.h>
++#include <stdint.h>
++
++struct find_exidx_data {
++	uintptr_t pc, exidx_start;
++	int exidx_len;
++};
++
++static int find_exidx(struct dl_phdr_info *info, size_t size, void *ptr)
++{
++	struct find_exidx_data *data = ptr;
++	const ElfW(Phdr) *phdr = info->dlpi_phdr;
++	uintptr_t addr, exidx_start = 0;
++	int i, match = 0, exidx_len = 0;
++
++	for (i = info->dlpi_phnum; i > 0; i--, phdr++) {
++		addr = info->dlpi_addr + phdr->p_vaddr;
++		switch (phdr->p_type) {
++		case PT_LOAD:
++			match |= data->pc >= addr && data->pc < addr + phdr->p_memsz;
++			break;
++		case PT_ARM_EXIDX:
++			exidx_start = addr;
++			exidx_len = phdr->p_memsz;
++			break;
++		}
++	}
++	data->exidx_start = exidx_start;
++	data->exidx_len = exidx_len;
++	return match;
++}
++
++uintptr_t __gnu_Unwind_Find_exidx(uintptr_t pc, int *pcount)
++{
++	struct find_exidx_data data;
++	data.pc = pc;
++	if (dl_iterate_phdr(find_exidx, &data) <= 0)
++		return 0;
++	*pcount = data.exidx_len / 8;
++	return data.exidx_start;
++}
+--- a/src/ldso/dynlink.c
++++ b/src/ldso/dynlink.c
+@@ -70,8 +70,8 @@ struct dso {
+ 	char kernel_mapped;
+ 	struct dso **deps, *needed_by;
+ 	char *rpath_orig, *rpath;
+-	void *tls_image;
+-	size_t tls_len, tls_size, tls_align, tls_id, tls_offset;
++	struct tls_module tls;
++	size_t tls_id;
+ 	size_t relro_start, relro_end;
+ 	void **new_dtv;
+ 	unsigned char *new_tls;
+@@ -99,7 +99,9 @@ struct symdef {
+ 
+ int __init_tp(void *);
+ void __init_libc(char **, char *);
++void *__copy_tls(unsigned char *);
+ 
++__attribute__((__visibility__("hidden")))
+ const char *__libc_get_version(void);
+ 
+ static struct builtin_tls {
+@@ -123,6 +125,7 @@ static int noload;
+ static jmp_buf *rtld_fail;
+ static pthread_rwlock_t lock;
+ static struct debug debug;
++static struct tls_module *tls_tail;
+ static size_t tls_cnt, tls_offset, tls_align = MIN_TLS_ALIGN;
+ static size_t static_tls_cnt;
+ static pthread_mutex_t init_fini_lock = { ._m_type = PTHREAD_MUTEX_RECURSIVE };
+@@ -131,6 +134,15 @@ static struct fdpic_dummy_loadmap app_du
+ 
+ struct debug *_dl_debug_addr = &debug;
+ 
++__attribute__((__visibility__("hidden")))
++void (*const __init_array_start)(void)=0, (*const __fini_array_start)(void)=0;
++
++__attribute__((__visibility__("hidden")))
++extern void (*const __init_array_end)(void), (*const __fini_array_end)(void);
++
++weak_alias(__init_array_start, __init_array_end);
++weak_alias(__fini_array_start, __fini_array_end);
++
+ static int dl_strcmp(const char *l, const char *r)
+ {
+ 	for (; *l==*r && *l; l++, r++);
+@@ -397,14 +409,14 @@ static void do_relocs(struct dso *dso, s
+ 			break;
+ #ifdef TLS_ABOVE_TP
+ 		case REL_TPOFF:
+-			*reloc_addr = tls_val + def.dso->tls_offset + TPOFF_K + addend;
++			*reloc_addr = tls_val + def.dso->tls.offset + TPOFF_K + addend;
+ 			break;
+ #else
+ 		case REL_TPOFF:
+-			*reloc_addr = tls_val - def.dso->tls_offset + addend;
++			*reloc_addr = tls_val - def.dso->tls.offset + addend;
+ 			break;
+ 		case REL_TPOFF_NEG:
+-			*reloc_addr = def.dso->tls_offset - tls_val + addend;
++			*reloc_addr = def.dso->tls.offset - tls_val + addend;
+ 			break;
+ #endif
+ 		case REL_TLSDESC:
+@@ -426,10 +438,10 @@ static void do_relocs(struct dso *dso, s
+ 			} else {
+ 				reloc_addr[0] = (size_t)__tlsdesc_static;
+ #ifdef TLS_ABOVE_TP
+-				reloc_addr[1] = tls_val + def.dso->tls_offset
++				reloc_addr[1] = tls_val + def.dso->tls.offset
+ 					+ TPOFF_K + addend;
+ #else
+-				reloc_addr[1] = tls_val - def.dso->tls_offset
++				reloc_addr[1] = tls_val - def.dso->tls.offset
+ 					+ addend;
+ #endif
+ 			}
+@@ -482,8 +494,14 @@ static void reclaim_gaps(struct dso *dso
+ 
+ static void *mmap_fixed(void *p, size_t n, int prot, int flags, int fd, off_t off)
+ {
+-	char *q = mmap(p, n, prot, flags, fd, off);
+-	if (q != MAP_FAILED || errno != EINVAL) return q;
++	static int no_map_fixed;
++	char *q;
++	if (!no_map_fixed) {
++		q = mmap(p, n, prot, flags|MAP_FIXED, fd, off);
++		if (!DL_NOMMU_SUPPORT || q != MAP_FAILED || errno != EINVAL)
++			return q;
++		no_map_fixed = 1;
++	}
+ 	/* Fallbacks for MAP_FIXED failure on NOMMU kernels. */
+ 	if (flags & MAP_ANONYMOUS) {
+ 		memset(p, 0, n);
+@@ -561,9 +579,9 @@ static void *map_library(int fd, struct
+ 			dyn = ph->p_vaddr;
+ 		} else if (ph->p_type == PT_TLS) {
+ 			tls_image = ph->p_vaddr;
+-			dso->tls_align = ph->p_align;
+-			dso->tls_len = ph->p_filesz;
+-			dso->tls_size = ph->p_memsz;
++			dso->tls.align = ph->p_align;
++			dso->tls.len = ph->p_filesz;
++			dso->tls.size = ph->p_memsz;
+ 		} else if (ph->p_type == PT_GNU_RELRO) {
+ 			dso->relro_start = ph->p_vaddr & -PAGE_SIZE;
+ 			dso->relro_end = (ph->p_vaddr + ph->p_memsz) & -PAGE_SIZE;
+@@ -593,7 +611,7 @@ static void *map_library(int fd, struct
+ 				((ph->p_flags&PF_W) ? PROT_WRITE: 0) |
+ 				((ph->p_flags&PF_X) ? PROT_EXEC : 0));
+ 			map = mmap(0, ph->p_memsz + (ph->p_vaddr & PAGE_SIZE-1),
+-				prot, (prot&PROT_WRITE) ? MAP_PRIVATE : MAP_SHARED,
++				prot, MAP_PRIVATE,
+ 				fd, ph->p_offset & -PAGE_SIZE);
+ 			if (map == MAP_FAILED) {
+ 				unmap_library(dso);
+@@ -604,6 +622,19 @@ static void *map_library(int fd, struct
+ 			dso->loadmap->segs[i].p_vaddr = ph->p_vaddr;
+ 			dso->loadmap->segs[i].p_memsz = ph->p_memsz;
+ 			i++;
++			if (prot & PROT_WRITE) {
++				size_t brk = (ph->p_vaddr & PAGE_SIZE-1)
++					+ ph->p_filesz;
++				size_t pgbrk = brk + PAGE_SIZE-1 & -PAGE_SIZE;
++				size_t pgend = brk + ph->p_memsz - ph->p_filesz
++					+ PAGE_SIZE-1 & -PAGE_SIZE;
++				if (pgend > pgbrk && mmap_fixed(map+pgbrk,
++					pgend-pgbrk, prot,
++					MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS,
++					-1, off_start) == MAP_FAILED)
++					goto error;
++				memset(map + brk, 0, pgbrk-brk);
++			}
+ 		}
+ 		map = (void *)dso->loadmap->segs[0].addr;
+ 		map_len = 0;
+@@ -618,7 +649,11 @@ static void *map_library(int fd, struct
+ 	 * the length of the file. This is okay because we will not
+ 	 * use the invalid part; we just need to reserve the right
+ 	 * amount of virtual address space to map over later. */
+-	map = mmap((void *)addr_min, map_len, prot, MAP_PRIVATE, fd, off_start);
++	map = DL_NOMMU_SUPPORT
++		? mmap((void *)addr_min, map_len, PROT_READ|PROT_WRITE|PROT_EXEC,
++			MAP_PRIVATE|MAP_ANONYMOUS, -1, 0)
++		: mmap((void *)addr_min, map_len, prot,
++			MAP_PRIVATE, fd, off_start);
+ 	if (map==MAP_FAILED) goto error;
+ 	dso->map = map;
+ 	dso->map_len = map_len;
+@@ -643,7 +678,8 @@ static void *map_library(int fd, struct
+ 			dso->phentsize = eh->e_phentsize;
+ 		}
+ 		/* Reuse the existing mapping for the lowest-address LOAD */
+-		if ((ph->p_vaddr & -PAGE_SIZE) == addr_min) continue;
++		if ((ph->p_vaddr & -PAGE_SIZE) == addr_min && !DL_NOMMU_SUPPORT)
++			continue;
+ 		this_min = ph->p_vaddr & -PAGE_SIZE;
+ 		this_max = ph->p_vaddr+ph->p_memsz+PAGE_SIZE-1 & -PAGE_SIZE;
+ 		off_start = ph->p_offset & -PAGE_SIZE;
+@@ -670,7 +706,7 @@ static void *map_library(int fd, struct
+ done_mapping:
+ 	dso->base = base;
+ 	dso->dynv = laddr(dso, dyn);
+-	if (dso->tls_size) dso->tls_image = laddr(dso, tls_image);
++	if (dso->tls.size) dso->tls.image = laddr(dso, tls_image);
+ 	if (!runtime) reclaim_gaps(dso);
+ 	free(allocated_buf);
+ 	return map;
+@@ -987,8 +1023,8 @@ static struct dso *load_library(const ch
+ 	 * extended DTV capable of storing an additional slot for
+ 	 * the newly-loaded DSO. */
+ 	alloc_size = sizeof *p + strlen(pathname) + 1;
+-	if (runtime && temp_dso.tls_image) {
+-		size_t per_th = temp_dso.tls_size + temp_dso.tls_align
++	if (runtime && temp_dso.tls.image) {
++		size_t per_th = temp_dso.tls.size + temp_dso.tls.align
+ 			+ sizeof(void *) * (tls_cnt+3);
+ 		n_th = libc.threads_minus_1 + 1;
+ 		if (n_th > SSIZE_MAX / per_th) alloc_size = SIZE_MAX;
+@@ -1009,22 +1045,25 @@ static struct dso *load_library(const ch
+ 	strcpy(p->name, pathname);
+ 	/* Add a shortname only if name arg was not an explicit pathname. */
+ 	if (pathname != name) p->shortname = strrchr(p->name, '/')+1;
+-	if (p->tls_image) {
++	if (p->tls.image) {
+ 		p->tls_id = ++tls_cnt;
+-		tls_align = MAXP2(tls_align, p->tls_align);
++		tls_align = MAXP2(tls_align, p->tls.align);
+ #ifdef TLS_ABOVE_TP
+-		p->tls_offset = tls_offset + ( (tls_align-1) &
+-			-(tls_offset + (uintptr_t)p->tls_image) );
+-		tls_offset += p->tls_size;
++		p->tls.offset = tls_offset + ( (tls_align-1) &
++			-(tls_offset + (uintptr_t)p->tls.image) );
++		tls_offset += p->tls.size;
+ #else
+-		tls_offset += p->tls_size + p->tls_align - 1;
+-		tls_offset -= (tls_offset + (uintptr_t)p->tls_image)
+-			& (p->tls_align-1);
+-		p->tls_offset = tls_offset;
++		tls_offset += p->tls.size + p->tls.align - 1;
++		tls_offset -= (tls_offset + (uintptr_t)p->tls.image)
++			& (p->tls.align-1);
++		p->tls.offset = tls_offset;
+ #endif
+ 		p->new_dtv = (void *)(-sizeof(size_t) &
+ 			(uintptr_t)(p->name+strlen(p->name)+sizeof(size_t)));
+ 		p->new_tls = (void *)(p->new_dtv + n_th*(tls_cnt+1));
++		if (tls_tail) tls_tail->next = &p->tls;
++		else libc.tls_head = &p->tls;
++		tls_tail = &p->tls;
+ 	}
+ 
+ 	tail->next = p;
+@@ -1151,7 +1190,7 @@ static void kernel_mapped_dso(struct dso
+ 	p->kernel_mapped = 1;
+ }
+ 
+-static void do_fini()
++void __libc_exit_fini()
+ {
+ 	struct dso *p;
+ 	size_t dyn[DYN_CNT];
+@@ -1214,53 +1253,8 @@ static void dl_debug_state(void)
+ 
+ weak_alias(dl_debug_state, _dl_debug_state);
+ 
+-void __reset_tls()
++void __init_tls(size_t *auxv)
+ {
+-	pthread_t self = __pthread_self();
+-	struct dso *p;
+-	for (p=head; p; p=p->next) {
+-		if (!p->tls_id || !self->dtv[p->tls_id]) continue;
+-		memcpy(self->dtv[p->tls_id], p->tls_image, p->tls_len);
+-		memset((char *)self->dtv[p->tls_id]+p->tls_len, 0,
+-			p->tls_size - p->tls_len);
+-		if (p->tls_id == (size_t)self->dtv[0]) break;
+-	}
+-}
+-
+-void *__copy_tls(unsigned char *mem)
+-{
+-	pthread_t td;
+-	struct dso *p;
+-	void **dtv;
+-
+-#ifdef TLS_ABOVE_TP
+-	dtv = (void **)(mem + libc.tls_size) - (tls_cnt + 1);
+-
+-	mem += -((uintptr_t)mem + sizeof(struct pthread)) & (tls_align-1);
+-	td = (pthread_t)mem;
+-	mem += sizeof(struct pthread);
+-
+-	for (p=head; p; p=p->next) {
+-		if (!p->tls_id) continue;
+-		dtv[p->tls_id] = mem + p->tls_offset;
+-		memcpy(dtv[p->tls_id], p->tls_image, p->tls_len);
+-	}
+-#else
+-	dtv = (void **)mem;
+-
+-	mem += libc.tls_size - sizeof(struct pthread);
+-	mem -= (uintptr_t)mem & (tls_align-1);
+-	td = (pthread_t)mem;
+-
+-	for (p=head; p; p=p->next) {
+-		if (!p->tls_id) continue;
+-		dtv[p->tls_id] = mem - p->tls_offset;
+-		memcpy(dtv[p->tls_id], p->tls_image, p->tls_len);
+-	}
+-#endif
+-	dtv[0] = (void *)tls_cnt;
+-	td->dtv = td->dtv_copy = dtv;
+-	return td;
+ }
+ 
+ __attribute__((__visibility__("hidden")))
+@@ -1286,7 +1280,7 @@ void *__tls_get_new(size_t *v)
+ 	/* Get new DTV space from new DSO if needed */
+ 	if (v[0] > (size_t)self->dtv[0]) {
+ 		void **newdtv = p->new_dtv +
+-			(v[0]+1)*sizeof(void *)*a_fetch_add(&p->new_dtv_idx,1);
++			(v[0]+1)*a_fetch_add(&p->new_dtv_idx,1);
+ 		memcpy(newdtv, self->dtv,
+ 			((size_t)self->dtv[0]+1) * sizeof(void *));
+ 		newdtv[0] = (void *)v[0];
+@@ -1297,12 +1291,12 @@ void *__tls_get_new(size_t *v)
+ 	unsigned char *mem;
+ 	for (p=head; ; p=p->next) {
+ 		if (!p->tls_id || self->dtv[p->tls_id]) continue;
+-		mem = p->new_tls + (p->tls_size + p->tls_align)
++		mem = p->new_tls + (p->tls.size + p->tls.align)
+ 			* a_fetch_add(&p->new_tls_idx,1);
+-		mem += ((uintptr_t)p->tls_image - (uintptr_t)mem)
+-			& (p->tls_align-1);
++		mem += ((uintptr_t)p->tls.image - (uintptr_t)mem)
++			& (p->tls.align-1);
+ 		self->dtv[p->tls_id] = mem;
+-		memcpy(mem, p->tls_image, p->tls_len);
++		memcpy(mem, p->tls.image, p->tls.len);
+ 		if (p->tls_id == v[0]) break;
+ 	}
+ 	__restore_sigs(&set);
+@@ -1311,6 +1305,8 @@ void *__tls_get_new(size_t *v)
+ 
+ static void update_tls_size()
+ {
++	libc.tls_cnt = tls_cnt;
++	libc.tls_align = tls_align;
+ 	libc.tls_size = ALIGN(
+ 		(1+tls_cnt) * sizeof(void *) +
+ 		tls_offset +
+@@ -1421,6 +1417,7 @@ _Noreturn void __dls3(size_t *sp)
+ 	 * use during dynamic linking. If possible it will also serve as the
+ 	 * thread pointer at runtime. */
+ 	libc.tls_size = sizeof builtin_tls;
++	libc.tls_align = tls_align;
+ 	if (__init_tp(__copy_tls((void *)builtin_tls)) < 0) {
+ 		a_crash();
+ 	}
+@@ -1448,13 +1445,13 @@ _Noreturn void __dls3(size_t *sp)
+ 				interp_off = (size_t)phdr->p_vaddr;
+ 			else if (phdr->p_type == PT_TLS) {
+ 				tls_image = phdr->p_vaddr;
+-				app.tls_len = phdr->p_filesz;
+-				app.tls_size = phdr->p_memsz;
+-				app.tls_align = phdr->p_align;
++				app.tls.len = phdr->p_filesz;
++				app.tls.size = phdr->p_memsz;
++				app.tls.align = phdr->p_align;
+ 			}
+ 		}
+ 		if (DL_FDPIC) app.loadmap = app_loadmap;
+-		if (app.tls_size) app.tls_image = laddr(&app, tls_image);
++		if (app.tls.size) app.tls.image = laddr(&app, tls_image);
+ 		if (interp_off) ldso.name = laddr(&app, interp_off);
+ 		if ((aux[0] & (1UL<<AT_EXECFN))
+ 		    && strncmp((char *)aux[AT_EXECFN], "/proc/", 6))
+@@ -1523,19 +1520,20 @@ _Noreturn void __dls3(size_t *sp)
+ 			dprintf(1, "\t%s (%p)\n", ldso.name, ldso.base);
+ 		}
+ 	}
+-	if (app.tls_size) {
++	if (app.tls.size) {
++		libc.tls_head = &app.tls;
+ 		app.tls_id = tls_cnt = 1;
+ #ifdef TLS_ABOVE_TP
+-		app.tls_offset = 0;
+-		tls_offset = app.tls_size
+-			+ ( -((uintptr_t)app.tls_image + app.tls_size)
+-			& (app.tls_align-1) );
++		app.tls.offset = 0;
++		tls_offset = app.tls.size
++			+ ( -((uintptr_t)app.tls.image + app.tls.size)
++			& (app.tls.align-1) );
+ #else
+-		tls_offset = app.tls_offset = app.tls_size
+-			+ ( -((uintptr_t)app.tls_image + app.tls_size)
+-			& (app.tls_align-1) );
++		tls_offset = app.tls.offset = app.tls.size
++			+ ( -((uintptr_t)app.tls.image + app.tls.size)
++			& (app.tls.align-1) );
+ #endif
+-		tls_align = MAXP2(tls_align, app.tls_align);
++		tls_align = MAXP2(tls_align, app.tls.align);
+ 	}
+ 	app.global = 1;
+ 	decode_dyn(&app);
+@@ -1635,8 +1633,6 @@ _Noreturn void __dls3(size_t *sp)
+ 	debug.state = 0;
+ 	_dl_debug_state();
+ 
+-	__init_libc(envp, argv[0]);
+-	atexit(do_fini);
+ 	errno = 0;
+ 
+ 	CRTJMP((void *)aux[AT_ENTRY], argv-1);
+@@ -1646,6 +1642,7 @@ _Noreturn void __dls3(size_t *sp)
+ void *dlopen(const char *file, int mode)
+ {
+ 	struct dso *volatile p, *orig_tail, *next;
++	struct tls_module *orig_tls_tail;
+ 	size_t orig_tls_cnt, orig_tls_offset, orig_tls_align;
+ 	size_t i;
+ 	int cs;
+@@ -1658,6 +1655,7 @@ void *dlopen(const char *file, int mode)
+ 	__inhibit_ptc();
+ 
+ 	p = 0;
++	orig_tls_tail = tls_tail;
+ 	orig_tls_cnt = tls_cnt;
+ 	orig_tls_offset = tls_offset;
+ 	orig_tls_align = tls_align;
+@@ -1684,6 +1682,8 @@ void *dlopen(const char *file, int mode)
+ 			unmap_library(p);
+ 			free(p);
+ 		}
++		if (!orig_tls_tail) libc.tls_head = 0;
++		tls_tail = orig_tls_tail;
+ 		tls_cnt = orig_tls_cnt;
+ 		tls_offset = orig_tls_offset;
+ 		tls_align = orig_tls_align;
+@@ -1900,7 +1900,7 @@ int dl_iterate_phdr(int(*callback)(struc
+ 		info.dlpi_adds      = gencnt;
+ 		info.dlpi_subs      = 0;
+ 		info.dlpi_tls_modid = current->tls_id;
+-		info.dlpi_tls_data  = current->tls_image;
++		info.dlpi_tls_data  = current->tls.image;
+ 
+ 		ret = (callback)(&info, sizeof (info), data);
+ 
+--- a/src/locale/langinfo.c
++++ b/src/locale/langinfo.c
+@@ -37,23 +37,23 @@ char *__nl_langinfo_l(nl_item item, loca
+ 	
+ 	switch (cat) {
+ 	case LC_NUMERIC:
+-		if (idx > 1) return NULL;
++		if (idx > 1) return "";
+ 		str = c_numeric;
+ 		break;
+ 	case LC_TIME:
+-		if (idx > 0x31) return NULL;
++		if (idx > 0x31) return "";
+ 		str = c_time;
+ 		break;
+ 	case LC_MONETARY:
+-		if (idx > 0) return NULL;
++		if (idx > 0) return "";
+ 		str = "";
+ 		break;
+ 	case LC_MESSAGES:
+-		if (idx > 3) return NULL;
++		if (idx > 3) return "";
+ 		str = c_messages;
+ 		break;
+ 	default:
+-		return NULL;
++		return "";
+ 	}
+ 
+ 	for (; idx; idx--, str++) for (; *str; str++);
+--- a/src/malloc/lite_malloc.c
++++ b/src/malloc/lite_malloc.c
+@@ -8,7 +8,7 @@
+ 
+ void *__expand_heap(size_t *);
+ 
+-void *__simple_malloc(size_t n)
++static void *__simple_malloc(size_t n)
+ {
+ 	static char *cur, *end;
+ 	static volatile int lock[2];
+--- a/src/math/__rem_pio2.c
++++ b/src/math/__rem_pio2.c
+@@ -118,7 +118,7 @@ int __rem_pio2(double x, double *y)
+ 	if (ix < 0x413921fb) {  /* |x| ~< 2^20*(pi/2), medium size */
+ medium:
+ 		/* rint(x/(pi/2)), Assume round-to-nearest. */
+-		fn = x*invpio2 + toint - toint;
++		fn = (double_t)x*invpio2 + toint - toint;
+ 		n = (int32_t)fn;
+ 		r = x - fn*pio2_1;
+ 		w = fn*pio2_1t;  /* 1st round, good to 85 bits */
+--- a/src/math/__rem_pio2f.c
++++ b/src/math/__rem_pio2f.c
+@@ -51,7 +51,7 @@ int __rem_pio2f(float x, double *y)
+ 	/* 25+53 bit pi is good enough for medium size */
+ 	if (ix < 0x4dc90fdb) {  /* |x| ~< 2^28*(pi/2), medium size */
+ 		/* Use a specialized rint() to get fn.  Assume round-to-nearest. */
+-		fn = x*invpio2 + toint - toint;
++		fn = (double_t)x*invpio2 + toint - toint;
+ 		n  = (int32_t)fn;
+ 		*y = x - fn*pio2_1 - fn*pio2_1t;
+ 		return n;
+--- /dev/null
++++ b/src/math/arm/fabs.c
+@@ -0,0 +1,15 @@
++#include <math.h>
++
++#if __ARM_PCS_VFP
++
++double fabs(double x)
++{
++	__asm__ ("vabs.f64 %P0, %P1" : "=w"(x) : "w"(x));
++	return x;
++}
++
++#else
++
++#include "../fabs.c"
++
++#endif
+--- /dev/null
++++ b/src/math/arm/fabsf.c
+@@ -0,0 +1,15 @@
++#include <math.h>
++
++#if __ARM_PCS_VFP
++
++float fabsf(float x)
++{
++	__asm__ ("vabs.f32 %0, %1" : "=t"(x) : "t"(x));
++	return x;
++}
++
++#else
++
++#include "../fabsf.c"
++
++#endif
+--- /dev/null
++++ b/src/math/arm/sqrt.c
+@@ -0,0 +1,15 @@
++#include <math.h>
++
++#if __VFP_FP__ && !__SOFTFP__
++
++double sqrt(double x)
++{
++	__asm__ ("vsqrt.f64 %P0, %P1" : "=w"(x) : "w"(x));
++	return x;
++}
++
++#else
++
++#include "../sqrt.c"
++
++#endif
+--- /dev/null
++++ b/src/math/arm/sqrtf.c
+@@ -0,0 +1,15 @@
++#include <math.h>
++
++#if __VFP_FP__ && !__SOFTFP__
++
++float sqrtf(float x)
++{
++	__asm__ ("vsqrt.f32 %0, %1" : "=t"(x) : "t"(x));
++	return x;
++}
++
++#else
++
++#include "../sqrtf.c"
++
++#endif
+--- a/src/math/armebhf/fabs.sub
++++ /dev/null
+@@ -1 +0,0 @@
+-../armhf/fabs.s
+--- a/src/math/armebhf/fabsf.sub
++++ /dev/null
+@@ -1 +0,0 @@
+-../armhf/fabsf.s
+--- a/src/math/armebhf/sqrt.sub
++++ /dev/null
+@@ -1 +0,0 @@
+-../armhf/sqrt.s
+--- a/src/math/armebhf/sqrtf.sub
++++ /dev/null
+@@ -1 +0,0 @@
+-../armhf/sqrtf.s
+--- a/src/math/armhf/fabs.s
++++ /dev/null
+@@ -1,7 +0,0 @@
+-.fpu vfp
+-.text
+-.global fabs
+-.type   fabs,%function
+-fabs:
+-	vabs.f64 d0, d0
+-	bx lr
+--- a/src/math/armhf/fabs.sub
++++ /dev/null
+@@ -1 +0,0 @@
+-fabs.s
+--- a/src/math/armhf/fabsf.s
++++ /dev/null
+@@ -1,7 +0,0 @@
+-.fpu vfp
+-.text
+-.global fabsf
+-.type   fabsf,%function
+-fabsf:
+-	vabs.f32 s0, s0
+-	bx lr
+--- a/src/math/armhf/fabsf.sub
++++ /dev/null
+@@ -1 +0,0 @@
+-fabsf.s
+--- a/src/math/armhf/sqrt.s
++++ /dev/null
+@@ -1,7 +0,0 @@
+-.fpu vfp
+-.text
+-.global sqrt
+-.type   sqrt,%function
+-sqrt:
+-	vsqrt.f64 d0, d0
+-	bx lr
+--- a/src/math/armhf/sqrt.sub
++++ /dev/null
+@@ -1 +0,0 @@
+-sqrt.s
+--- a/src/math/armhf/sqrtf.s
++++ /dev/null
+@@ -1,7 +0,0 @@
+-.fpu vfp
+-.text
+-.global sqrtf
+-.type   sqrtf,%function
+-sqrtf:
+-	vsqrt.f32 s0, s0
+-	bx lr
+--- a/src/math/armhf/sqrtf.sub
++++ /dev/null
+@@ -1 +0,0 @@
+-sqrtf.s
+--- a/src/math/hypot.c
++++ b/src/math/hypot.c
+@@ -12,10 +12,10 @@ static void sq(double_t *hi, double_t *l
+ {
+ 	double_t xh, xl, xc;
+ 
+-	xc = x*SPLIT;
++	xc = (double_t)x*SPLIT;
+ 	xh = x - xc + xc;
+ 	xl = x - xh;
+-	*hi = x*x;
++	*hi = (double_t)x*x;
+ 	*lo = xh*xh - *hi + 2*xh*xl + xl*xl;
+ }
+ 
+--- a/src/mman/mremap.c
++++ b/src/mman/mremap.c
+@@ -1,17 +1,31 @@
++#define _GNU_SOURCE
+ #include <unistd.h>
+ #include <sys/mman.h>
++#include <errno.h>
++#include <stdint.h>
+ #include <stdarg.h>
+ #include "syscall.h"
+ #include "libc.h"
+ 
++static void dummy(void) { }
++weak_alias(dummy, __vm_wait);
++
+ void *__mremap(void *old_addr, size_t old_len, size_t new_len, int flags, ...)
+ {
+ 	va_list ap;
+-	void *new_addr;
+-	
+-	va_start(ap, flags);
+-	new_addr = va_arg(ap, void *);
+-	va_end(ap);
++	void *new_addr = 0;
++
++	if (new_len >= PTRDIFF_MAX) {
++		errno = ENOMEM;
++		return MAP_FAILED;
++	}
++
++	if (flags & MREMAP_FIXED) {
++		__vm_wait();
++		va_start(ap, flags);
++		new_addr = va_arg(ap, void *);
++		va_end(ap);
++	}
+ 
+ 	return (void *)syscall(SYS_mremap, old_addr, old_len, new_len, flags, new_addr);
+ }
+--- a/src/network/getifaddrs.c
++++ b/src/network/getifaddrs.c
+@@ -162,13 +162,26 @@ static int netlink_msg_to_ifaddr(void *p
+ 		for (rta = NLMSG_RTA(h, sizeof(*ifa)); NLMSG_RTAOK(rta, h); rta = RTA_NEXT(rta)) {
+ 			switch (rta->rta_type) {
+ 			case IFA_ADDRESS:
+-				copy_addr(&ifs->ifa.ifa_addr, ifa->ifa_family, &ifs->addr, RTA_DATA(rta), RTA_DATALEN(rta), ifa->ifa_index);
++				/* If ifa_addr is already set we, received an IFA_LOCAL before
++				 * so treat this as destination address */
++				if (ifs->ifa.ifa_addr)
++					copy_addr(&ifs->ifa.ifa_dstaddr, ifa->ifa_family, &ifs->ifu, RTA_DATA(rta), RTA_DATALEN(rta), ifa->ifa_index);
++				else
++					copy_addr(&ifs->ifa.ifa_addr, ifa->ifa_family, &ifs->addr, RTA_DATA(rta), RTA_DATALEN(rta), ifa->ifa_index);
+ 				break;
+ 			case IFA_BROADCAST:
+-				/* For point-to-point links this is peer, but ifa_broadaddr
+-				 * and ifa_dstaddr are union, so this works for both.  */
+ 				copy_addr(&ifs->ifa.ifa_broadaddr, ifa->ifa_family, &ifs->ifu, RTA_DATA(rta), RTA_DATALEN(rta), ifa->ifa_index);
+ 				break;
++			case IFA_LOCAL:
++				/* If ifa_addr is set and we get IFA_LOCAL, assume we have
++				 * a point-to-point network. Move address to correct field. */
++				if (ifs->ifa.ifa_addr) {
++					ifs->ifu = ifs->addr;
++					ifs->ifa.ifa_dstaddr = &ifs->ifu.sa;
++					memset(&ifs->addr, 0, sizeof(ifs->addr));
++				}
++				copy_addr(&ifs->ifa.ifa_addr, ifa->ifa_family, &ifs->addr, RTA_DATA(rta), RTA_DATALEN(rta), ifa->ifa_index);
++				break;
+ 			case IFA_LABEL:
+ 				if (RTA_DATALEN(rta) < sizeof(ifs->name)) {
+ 					memcpy(ifs->name, RTA_DATA(rta), RTA_DATALEN(rta));
+--- a/src/network/getnameinfo.c
++++ b/src/network/getnameinfo.c
+@@ -135,13 +135,13 @@ int getnameinfo(const struct sockaddr *r
+ 	switch (af) {
+ 	case AF_INET:
+ 		a = (void *)&((struct sockaddr_in *)sa)->sin_addr;
+-		if (sl != sizeof(struct sockaddr_in)) return EAI_FAMILY;
++		if (sl < sizeof(struct sockaddr_in)) return EAI_FAMILY;
+ 		mkptr4(ptr, a);
+ 		scopeid = 0;
+ 		break;
+ 	case AF_INET6:
+ 		a = (void *)&((struct sockaddr_in6 *)sa)->sin6_addr;
+-		if (sl != sizeof(struct sockaddr_in6)) return EAI_FAMILY;
++		if (sl < sizeof(struct sockaddr_in6)) return EAI_FAMILY;
+ 		if (memcmp(a, "\0\0\0\0\0\0\0\0\0\0\xff\xff", 12))
+ 			mkptr6(ptr, a);
+ 		else
+--- a/src/network/if_nametoindex.c
++++ b/src/network/if_nametoindex.c
+@@ -10,7 +10,7 @@ unsigned if_nametoindex(const char *name
+ 	struct ifreq ifr;
+ 	int fd, r;
+ 
+-	if ((fd = socket(AF_UNIX, SOCK_DGRAM|SOCK_CLOEXEC, 0)) < 0) return -1;
++	if ((fd = socket(AF_UNIX, SOCK_DGRAM|SOCK_CLOEXEC, 0)) < 0) return 0;
+ 	strncpy(ifr.ifr_name, name, sizeof ifr.ifr_name);
+ 	r = ioctl(fd, SIOCGIFINDEX, &ifr);
+ 	__syscall(SYS_close, fd);
+--- a/src/network/lookup_name.c
++++ b/src/network/lookup_name.c
+@@ -9,6 +9,7 @@
+ #include <fcntl.h>
+ #include <unistd.h>
+ #include <pthread.h>
++#include <errno.h>
+ #include "lookup.h"
+ #include "stdio_impl.h"
+ #include "syscall.h"
+@@ -51,7 +52,14 @@ static int name_from_hosts(struct addres
+ 	int cnt = 0;
+ 	unsigned char _buf[1032];
+ 	FILE _f, *f = __fopen_rb_ca("/etc/hosts", &_f, _buf, sizeof _buf);
+-	if (!f) return 0;
++	if (!f) switch (errno) {
++	case ENOENT:
++	case ENOTDIR:
++	case EACCES:
++		return 0;
++	default:
++		return EAI_SYSTEM;
++	}
+ 	while (fgets(line, sizeof line, f) && cnt < MAXADDRS) {
+ 		char *p, *z;
+ 
+--- a/src/network/lookup_serv.c
++++ b/src/network/lookup_serv.c
+@@ -4,6 +4,7 @@
+ #include <ctype.h>
+ #include <string.h>
+ #include <fcntl.h>
++#include <errno.h>
+ #include "lookup.h"
+ #include "stdio_impl.h"
+ 
+@@ -69,7 +70,14 @@ int __lookup_serv(struct service buf[sta
+ 
+ 	unsigned char _buf[1032];
+ 	FILE _f, *f = __fopen_rb_ca("/etc/services", &_f, _buf, sizeof _buf);
+-	if (!f) return EAI_SERVICE;
++	if (!f) switch (errno) {
++	case ENOENT:
++	case ENOTDIR:
++	case EACCES:
++		return EAI_SERVICE;
++	default:
++		return EAI_SYSTEM;
++	}
+ 
+ 	while (fgets(line, sizeof line, f) && cnt < MAXSERVS) {
+ 		if ((p=strchr(line, '#'))) *p++='\n', *p=0;
+--- a/src/network/proto.c
++++ b/src/network/proto.c
+@@ -9,21 +9,36 @@ static const unsigned char protos[] = {
+ 	"\001icmp\0"
+ 	"\002igmp\0"
+ 	"\003ggp\0"
++	"\004ipencap\0"
++	"\005st\0"
+ 	"\006tcp\0"
++	"\008egp\0"
+ 	"\014pup\0"
+ 	"\021udp\0"
+-	"\026idp\0"
++	"\024hmp\0"
++	"\026xns-idp\0"
++	"\033rdp\0"
++	"\035iso-tp4\0"
++	"\044xtp\0"
++	"\045ddp\0"
++	"\046idpr-cmtp\0"
+ 	"\051ipv6\0"
+ 	"\053ipv6-route\0"
+ 	"\054ipv6-frag\0"
++	"\055idrp\0"
++	"\056rsvp\0"
+ 	"\057gre\0"
+ 	"\062esp\0"
+ 	"\063ah\0"
++	"\071skip\0"
+ 	"\072ipv6-icmp\0"
+ 	"\073ipv6-nonxt\0"
+ 	"\074ipv6-opts\0"
++	"\111rspf\0"
++	"\121vmtp\0"
+ 	"\131ospf\0"
+ 	"\136ipip\0"
++	"\142encap\0"
+ 	"\147pim\0"
+ 	"\377raw"
+ };
+--- a/src/network/res_msend.c
++++ b/src/network/res_msend.c
+@@ -54,7 +54,15 @@ int __res_msend(int nqueries, const unsi
+ 
+ 	/* Get nameservers from resolv.conf, fallback to localhost */
+ 	f = __fopen_rb_ca("/etc/resolv.conf", &_f, _buf, sizeof _buf);
+-	if (f) for (nns=0; nns<3 && fgets(line, sizeof line, f); ) {
++	if (!f) switch (errno) {
++	case ENOENT:
++	case ENOTDIR:
++	case EACCES:
++		goto no_resolv_conf;
++	default:
++		return -1;
++	}
++	for (nns=0; nns<3 && fgets(line, sizeof line, f); ) {
+ 		if (!strncmp(line, "options", 7) && isspace(line[7])) {
+ 			unsigned long x;
+ 			char *p, *z;
+@@ -92,7 +100,8 @@ int __res_msend(int nqueries, const unsi
+ 			}
+ 		}
+ 	}
+-	if (f) __fclose_ca(f);
++	__fclose_ca(f);
++no_resolv_conf:
+ 	if (!nns) {
+ 		ns[0].sin.sin_family = AF_INET;
+ 		ns[0].sin.sin_port = htons(53);
+--- a/src/search/tsearch_avl.c
++++ b/src/search/tsearch_avl.c
+@@ -77,38 +77,45 @@ static struct node *find(struct node *n,
+ 		return find(n->right, k, cmp);
+ }
+ 
+-static struct node *insert(struct node **n, const void *k,
+-	int (*cmp)(const void *, const void *), int *new)
++static struct node *insert(struct node *n, const void *k,
++	int (*cmp)(const void *, const void *), struct node **found)
+ {
+-	struct node *r = *n;
++	struct node *r;
+ 	int c;
+ 
+-	if (!r) {
+-		*n = r = malloc(sizeof **n);
+-		if (r) {
+-			r->key = k;
+-			r->left = r->right = 0;
+-			r->height = 1;
++	if (!n) {
++		n = malloc(sizeof *n);
++		if (n) {
++			n->key = k;
++			n->left = n->right = 0;
++			n->height = 1;
+ 		}
+-		*new = 1;
+-		return r;
++		*found = n;
++		return n;
++	}
++	c = cmp(k, n->key);
++	if (c == 0) {
++		*found = n;
++		return 0;
++	}
++	r = insert(c < 0 ? n->left : n->right, k, cmp, found);
++	if (r) {
++		if (c < 0)
++			n->left = r;
++		else
++			n->right = r;
++		r = balance(n);
+ 	}
+-	c = cmp(k, r->key);
+-	if (c == 0)
+-		return r;
+-	if (c < 0)
+-		r = insert(&r->left, k, cmp, new);
+-	else
+-		r = insert(&r->right, k, cmp, new);
+-	if (*new)
+-		*n = balance(*n);
+ 	return r;
+ }
+ 
+-static struct node *movr(struct node *n, struct node *r) {
+-	if (!n)
+-		return r;
+-	n->right = movr(n->right, r);
++static struct node *remove_rightmost(struct node *n, struct node **rightmost)
++{
++	if (!n->right) {
++		*rightmost = n;
++		return n->left;
++	}
++	n->right = remove_rightmost(n->right, rightmost);
+ 	return balance(n);
+ }
+ 
+@@ -122,7 +129,13 @@ static struct node *remove(struct node *
+ 	c = cmp(k, (*n)->key);
+ 	if (c == 0) {
+ 		struct node *r = *n;
+-		*n = movr(r->left, r->right);
++		if (r->left) {
++			r->left = remove_rightmost(r->left, n);
++			(*n)->left = r->left;
++			(*n)->right = r->right;
++			*n = balance(*n);
++		} else
++			*n = r->right;
+ 		free(r);
+ 		return parent;
+ 	}
+@@ -138,6 +151,8 @@ static struct node *remove(struct node *
+ void *tdelete(const void *restrict key, void **restrict rootp,
+ 	int(*compar)(const void *, const void *))
+ {
++	if (!rootp)
++		return 0;
+ 	struct node *n = *rootp;
+ 	struct node *ret;
+ 	/* last argument is arbitrary non-null pointer
+@@ -150,17 +165,21 @@ void *tdelete(const void *restrict key,
+ void *tfind(const void *key, void *const *rootp,
+ 	int(*compar)(const void *, const void *))
+ {
++	if (!rootp)
++		return 0;
+ 	return find(*rootp, key, compar);
+ }
+ 
+ void *tsearch(const void *key, void **rootp,
+ 	int (*compar)(const void *, const void *))
+ {
+-	int new = 0;
+-	struct node *n = *rootp;
++	struct node *update;
+ 	struct node *ret;
+-	ret = insert(&n, key, compar, &new);
+-	*rootp = n;
++	if (!rootp)
++		return 0;
++	update = insert(*rootp, key, compar, &ret);
++	if (update)
++		*rootp = update;
+ 	return ret;
+ }
+ 
+--- a/src/setjmp/arm/longjmp.s
++++ b/src/setjmp/arm/longjmp.s
+@@ -1,3 +1,4 @@
++.syntax unified
+ .global _longjmp
+ .global longjmp
+ .type _longjmp,%function
+@@ -20,7 +21,11 @@ longjmp:
+ 	ldc p2, cr4, [ip], #48
+ 2:	tst r1,#0x40
+ 	beq 2f
+-	.word 0xecbc8b10 /* vldmia ip!, {d8-d15} */
++	.fpu vfp
++	vldmia ip!, {d8-d15}
++	.fpu softvfp
++	.eabi_attribute 10, 0
++	.eabi_attribute 27, 0
+ 2:	tst r1,#0x200
+ 	beq 3f
+ 	ldcl p1, cr10, [ip], #8
+@@ -29,9 +34,7 @@ longjmp:
+ 	ldcl p1, cr13, [ip], #8
+ 	ldcl p1, cr14, [ip], #8
+ 	ldcl p1, cr15, [ip], #8
+-3:	tst lr,#1
+-	moveq pc,lr
+-	bx lr
++3:	bx lr
+ 
+ .hidden __hwcap
+ 1:	.word __hwcap-1b
+--- a/src/setjmp/arm/setjmp.s
++++ b/src/setjmp/arm/setjmp.s
+@@ -1,3 +1,4 @@
++.syntax unified
+ .global __setjmp
+ .global _setjmp
+ .global setjmp
+@@ -22,7 +23,11 @@ setjmp:
+ 	stc p2, cr4, [ip], #48
+ 2:	tst r1,#0x40
+ 	beq 2f
+-	.word 0xecac8b10 /* vstmia ip!, {d8-d15} */
++	.fpu vfp
++	vstmia ip!, {d8-d15}
++	.fpu softvfp
++	.eabi_attribute 10, 0
++	.eabi_attribute 27, 0
+ 2:	tst r1,#0x200
+ 	beq 3f
+ 	stcl p1, cr10, [ip], #8
+@@ -31,9 +36,7 @@ setjmp:
+ 	stcl p1, cr13, [ip], #8
+ 	stcl p1, cr14, [ip], #8
+ 	stcl p1, cr15, [ip], #8
+-3:	tst lr,#1
+-	moveq pc,lr
+-	bx lr
++3:	bx lr
+ 
+ .hidden __hwcap
+ 1:	.word __hwcap-1b
+--- a/src/setjmp/mips-sf/longjmp.s
++++ /dev/null
+@@ -1,25 +0,0 @@
+-.set noreorder
+-
+-.global _longjmp
+-.global longjmp
+-.type   _longjmp,@function
+-.type   longjmp,@function
+-_longjmp:
+-longjmp:
+-	move    $2, $5
+-	bne     $2, $0, 1f
+-	nop
+-	addu    $2, $2, 1
+-1:	lw      $ra,  0($4)
+-	lw      $sp,  4($4)
+-	lw      $16,  8($4)
+-	lw      $17, 12($4)
+-	lw      $18, 16($4)
+-	lw      $19, 20($4)
+-	lw      $20, 24($4)
+-	lw      $21, 28($4)
+-	lw      $22, 32($4)
+-	lw      $23, 36($4)
+-	lw      $30, 40($4)
+-	jr      $ra
+-	lw      $28, 44($4)
+--- a/src/setjmp/mips-sf/longjmp.sub
++++ /dev/null
+@@ -1 +0,0 @@
+-longjmp.s
+--- a/src/setjmp/mips-sf/setjmp.s
++++ /dev/null
+@@ -1,25 +0,0 @@
+-.set noreorder
+-
+-.global __setjmp
+-.global _setjmp
+-.global setjmp
+-.type   __setjmp,@function
+-.type   _setjmp,@function
+-.type   setjmp,@function
+-__setjmp:
+-_setjmp:
+-setjmp:
+-	sw      $ra,  0($4)
+-	sw      $sp,  4($4)
+-	sw      $16,  8($4)
+-	sw      $17, 12($4)
+-	sw      $18, 16($4)
+-	sw      $19, 20($4)
+-	sw      $20, 24($4)
+-	sw      $21, 28($4)
+-	sw      $22, 32($4)
+-	sw      $23, 36($4)
+-	sw      $30, 40($4)
+-	sw      $28, 44($4)
+-	jr      $ra
+-	li      $2, 0
+--- a/src/setjmp/mips-sf/setjmp.sub
++++ /dev/null
+@@ -1 +0,0 @@
+-setjmp.s
+--- /dev/null
++++ b/src/setjmp/mips/longjmp.S
+@@ -0,0 +1,40 @@
++.set noreorder
++
++.global _longjmp
++.global longjmp
++.type   _longjmp,@function
++.type   longjmp,@function
++_longjmp:
++longjmp:
++	move    $2, $5
++	bne     $2, $0, 1f
++	nop
++	addu    $2, $2, 1
++1:
++#ifndef __mips_soft_float
++	lwc1    $20, 56($4)
++	lwc1    $21, 60($4)
++	lwc1    $22, 64($4)
++	lwc1    $23, 68($4)
++	lwc1    $24, 72($4)
++	lwc1    $25, 76($4)
++	lwc1    $26, 80($4)
++	lwc1    $27, 84($4)
++	lwc1    $28, 88($4)
++	lwc1    $29, 92($4)
++	lwc1    $30, 96($4)
++	lwc1    $31, 100($4)
++#endif
++	lw      $ra,  0($4)
++	lw      $sp,  4($4)
++	lw      $16,  8($4)
++	lw      $17, 12($4)
++	lw      $18, 16($4)
++	lw      $19, 20($4)
++	lw      $20, 24($4)
++	lw      $21, 28($4)
++	lw      $22, 32($4)
++	lw      $23, 36($4)
++	lw      $30, 40($4)
++	jr      $ra
++	lw      $28, 44($4)
+--- a/src/setjmp/mips/longjmp.s
++++ /dev/null
+@@ -1,37 +0,0 @@
+-.set noreorder
+-
+-.global _longjmp
+-.global longjmp
+-.type   _longjmp,@function
+-.type   longjmp,@function
+-_longjmp:
+-longjmp:
+-	move    $2, $5
+-	bne     $2, $0, 1f
+-	nop
+-	addu    $2, $2, 1
+-1:	lwc1    $20, 56($4)
+-	lwc1    $21, 60($4)
+-	lwc1    $22, 64($4)
+-	lwc1    $23, 68($4)
+-	lwc1    $24, 72($4)
+-	lwc1    $25, 76($4)
+-	lwc1    $26, 80($4)
+-	lwc1    $27, 84($4)
+-	lwc1    $28, 88($4)
+-	lwc1    $29, 92($4)
+-	lwc1    $30, 96($4)
+-	lwc1    $31, 100($4)
+-	lw      $ra,  0($4)
+-	lw      $sp,  4($4)
+-	lw      $16,  8($4)
+-	lw      $17, 12($4)
+-	lw      $18, 16($4)
+-	lw      $19, 20($4)
+-	lw      $20, 24($4)
+-	lw      $21, 28($4)
+-	lw      $22, 32($4)
+-	lw      $23, 36($4)
+-	lw      $30, 40($4)
+-	jr      $ra
+-	lw      $28, 44($4)
+--- /dev/null
++++ b/src/setjmp/mips/setjmp.S
+@@ -0,0 +1,39 @@
++.set noreorder
++
++.global __setjmp
++.global _setjmp
++.global setjmp
++.type   __setjmp,@function
++.type   _setjmp,@function
++.type   setjmp,@function
++__setjmp:
++_setjmp:
++setjmp:
++	sw      $ra,  0($4)
++	sw      $sp,  4($4)
++	sw      $16,  8($4)
++	sw      $17, 12($4)
++	sw      $18, 16($4)
++	sw      $19, 20($4)
++	sw      $20, 24($4)
++	sw      $21, 28($4)
++	sw      $22, 32($4)
++	sw      $23, 36($4)
++	sw      $30, 40($4)
++	sw      $28, 44($4)
++#ifndef __mips_soft_float
++	swc1    $20, 56($4)
++	swc1    $21, 60($4)
++	swc1    $22, 64($4)
++	swc1    $23, 68($4)
++	swc1    $24, 72($4)
++	swc1    $25, 76($4)
++	swc1    $26, 80($4)
++	swc1    $27, 84($4)
++	swc1    $28, 88($4)
++	swc1    $29, 92($4)
++	swc1    $30, 96($4)
++	swc1    $31, 100($4)
++#endif
++	jr      $ra
++	li      $2, 0
+--- a/src/setjmp/mips/setjmp.s
++++ /dev/null
+@@ -1,37 +0,0 @@
+-.set noreorder
+-
+-.global __setjmp
+-.global _setjmp
+-.global setjmp
+-.type   __setjmp,@function
+-.type   _setjmp,@function
+-.type   setjmp,@function
+-__setjmp:
+-_setjmp:
+-setjmp:
+-	sw      $ra,  0($4)
+-	sw      $sp,  4($4)
+-	sw      $16,  8($4)
+-	sw      $17, 12($4)
+-	sw      $18, 16($4)
+-	sw      $19, 20($4)
+-	sw      $20, 24($4)
+-	sw      $21, 28($4)
+-	sw      $22, 32($4)
+-	sw      $23, 36($4)
+-	sw      $30, 40($4)
+-	sw      $28, 44($4)
+-	swc1    $20, 56($4)
+-	swc1    $21, 60($4)
+-	swc1    $22, 64($4)
+-	swc1    $23, 68($4)
+-	swc1    $24, 72($4)
+-	swc1    $25, 76($4)
+-	swc1    $26, 80($4)
+-	swc1    $27, 84($4)
+-	swc1    $28, 88($4)
+-	swc1    $29, 92($4)
+-	swc1    $30, 96($4)
+-	swc1    $31, 100($4)
+-	jr      $ra
+-	li      $2, 0
+--- a/src/setjmp/mipsel-sf/longjmp.sub
++++ /dev/null
+@@ -1 +0,0 @@
+-../mips-sf/longjmp.s
+--- a/src/setjmp/mipsel-sf/setjmp.sub
++++ /dev/null
+@@ -1 +0,0 @@
+-../mips-sf/setjmp.s
+--- a/src/setjmp/sh-nofpu/longjmp.s
++++ /dev/null
+@@ -1,22 +0,0 @@
+-.global _longjmp
+-.global longjmp
+-.type   _longjmp, @function
+-.type   longjmp,  @function
+-_longjmp:
+-longjmp:
+-	mov.l  @r4+, r8
+-	mov.l  @r4+, r9
+-	mov.l  @r4+, r10
+-	mov.l  @r4+, r11
+-	mov.l  @r4+, r12
+-	mov.l  @r4+, r13
+-	mov.l  @r4+, r14
+-	mov.l  @r4+, r15
+-	lds.l  @r4+, pr
+-
+-	tst  r5, r5
+-	movt r0
+-	add  r5, r0
+-
+-	rts
+-	 nop
+--- a/src/setjmp/sh-nofpu/longjmp.sub
++++ /dev/null
+@@ -1 +0,0 @@
+-longjmp.s
+--- a/src/setjmp/sh-nofpu/setjmp.s
++++ /dev/null
+@@ -1,24 +0,0 @@
+-.global ___setjmp
+-.hidden ___setjmp
+-.global __setjmp
+-.global _setjmp
+-.global setjmp
+-.type   __setjmp, @function
+-.type   _setjmp,  @function
+-.type   setjmp,   @function
+-___setjmp:
+-__setjmp:
+-_setjmp:
+-setjmp:
+-	add   #36, r4
+-	sts.l  pr,   @-r4
+-	mov.l  r15   @-r4
+-	mov.l  r14,  @-r4
+-	mov.l  r13,  @-r4
+-	mov.l  r12,  @-r4
+-	mov.l  r11,  @-r4
+-	mov.l  r10,  @-r4
+-	mov.l  r9,   @-r4
+-	mov.l  r8,   @-r4
+-	rts
+-	 mov  #0, r0
+--- a/src/setjmp/sh-nofpu/setjmp.sub
++++ /dev/null
+@@ -1 +0,0 @@
+-setjmp.s
+--- /dev/null
++++ b/src/setjmp/sh/longjmp.S
+@@ -0,0 +1,28 @@
++.global _longjmp
++.global longjmp
++.type   _longjmp, @function
++.type   longjmp,  @function
++_longjmp:
++longjmp:
++	mov.l  @r4+, r8
++	mov.l  @r4+, r9
++	mov.l  @r4+, r10
++	mov.l  @r4+, r11
++	mov.l  @r4+, r12
++	mov.l  @r4+, r13
++	mov.l  @r4+, r14
++	mov.l  @r4+, r15
++	lds.l  @r4+, pr
++#if __SH_FPU_ANY__ || __SH4__
++	fmov.s @r4+, fr12
++	fmov.s @r4+, fr13
++	fmov.s @r4+, fr14
++	fmov.s @r4+, fr15
++#endif
++
++	tst  r5, r5
++	movt r0
++	add  r5, r0
++
++	rts
++	 nop
+--- a/src/setjmp/sh/longjmp.s
++++ /dev/null
+@@ -1,26 +0,0 @@
+-.global _longjmp
+-.global longjmp
+-.type   _longjmp, @function
+-.type   longjmp,  @function
+-_longjmp:
+-longjmp:
+-	mov.l  @r4+, r8
+-	mov.l  @r4+, r9
+-	mov.l  @r4+, r10
+-	mov.l  @r4+, r11
+-	mov.l  @r4+, r12
+-	mov.l  @r4+, r13
+-	mov.l  @r4+, r14
+-	mov.l  @r4+, r15
+-	lds.l  @r4+, pr
+-	fmov.s @r4+, fr12
+-	fmov.s @r4+, fr13
+-	fmov.s @r4+, fr14
+-	fmov.s @r4+, fr15
+-
+-	tst  r5, r5
+-	movt r0
+-	add  r5, r0
+-
+-	rts
+-	 nop
+--- /dev/null
++++ b/src/setjmp/sh/setjmp.S
+@@ -0,0 +1,32 @@
++.global ___setjmp
++.hidden ___setjmp
++.global __setjmp
++.global _setjmp
++.global setjmp
++.type   __setjmp, @function
++.type   _setjmp,  @function
++.type   setjmp,   @function
++___setjmp:
++__setjmp:
++_setjmp:
++setjmp:
++#if __SH_FPU_ANY__ || __SH4__
++	add   #52, r4
++	fmov.s fr15, @-r4
++	fmov.s fr14, @-r4
++	fmov.s fr13, @-r4
++	fmov.s fr12, @-r4
++#else
++	add   #36, r4
++#endif
++	sts.l  pr,   @-r4
++	mov.l  r15,  @-r4
++	mov.l  r14,  @-r4
++	mov.l  r13,  @-r4
++	mov.l  r12,  @-r4
++	mov.l  r11,  @-r4
++	mov.l  r10,  @-r4
++	mov.l  r9,   @-r4
++	mov.l  r8,   @-r4
++	rts
++	 mov  #0, r0
+--- a/src/setjmp/sh/setjmp.s
++++ /dev/null
+@@ -1,28 +0,0 @@
+-.global ___setjmp
+-.hidden ___setjmp
+-.global __setjmp
+-.global _setjmp
+-.global setjmp
+-.type   __setjmp, @function
+-.type   _setjmp,  @function
+-.type   setjmp,   @function
+-___setjmp:
+-__setjmp:
+-_setjmp:
+-setjmp:
+-	add   #52, r4
+-	fmov.s fr15, @-r4
+-	fmov.s fr14, @-r4
+-	fmov.s fr13, @-r4
+-	fmov.s fr12, @-r4
+-	sts.l  pr,   @-r4
+-	mov.l  r15,  @-r4
+-	mov.l  r14,  @-r4
+-	mov.l  r13,  @-r4
+-	mov.l  r12,  @-r4
+-	mov.l  r11,  @-r4
+-	mov.l  r10,  @-r4
+-	mov.l  r9,   @-r4
+-	mov.l  r8,   @-r4
+-	rts
+-	 mov  #0, r0
+--- a/src/setjmp/sheb-nofpu/longjmp.sub
++++ /dev/null
+@@ -1 +0,0 @@
+-../sh-nofpu/longjmp.s
+--- a/src/setjmp/sheb-nofpu/setjmp.sub
++++ /dev/null
+@@ -1 +0,0 @@
+-../sh-nofpu/setjmp.s
+--- a/src/signal/arm/restore.s
++++ b/src/signal/arm/restore.s
+@@ -1,3 +1,5 @@
++.syntax unified
++
+ .global __restore
+ .type __restore,%function
+ __restore:
+--- a/src/signal/arm/sigsetjmp.s
++++ b/src/signal/arm/sigsetjmp.s
+@@ -1,3 +1,4 @@
++.syntax unified
+ .global sigsetjmp
+ .global __sigsetjmp
+ .type sigsetjmp,%function
+--- a/src/signal/sigaction.c
++++ b/src/signal/sigaction.c
+@@ -17,10 +17,6 @@ void __get_handler_set(sigset_t *set)
+ int __libc_sigaction(int sig, const struct sigaction *restrict sa, struct sigaction *restrict old)
+ {
+ 	struct k_sigaction ksa, ksa_old;
+-	if (sig >= (unsigned)_NSIG) {
+-		errno = EINVAL;
+-		return -1;
+-	}
+ 	if (sa) {
+ 		if ((uintptr_t)sa->sa_handler > 1UL) {
+ 			a_or_l(handler_set+(sig-1)/(8*sizeof(long)),
+@@ -57,7 +53,7 @@ int __libc_sigaction(int sig, const stru
+ 
+ int __sigaction(int sig, const struct sigaction *restrict sa, struct sigaction *restrict old)
+ {
+-	if (sig-32U < 3) {
++	if (sig-32U < 3 || sig-1U >= _NSIG-1) {
+ 		errno = EINVAL;
+ 		return -1;
+ 	}
+--- a/src/signal/sigsetjmp_tail.c
++++ b/src/signal/sigsetjmp_tail.c
+@@ -2,9 +2,7 @@
+ #include <signal.h>
+ #include "syscall.h"
+ 
+-#ifdef SHARED
+ __attribute__((__visibility__("hidden")))
+-#endif
+ int __sigsetjmp_tail(sigjmp_buf jb, int ret)
+ {
+ 	void *p = jb->__ss;
+--- a/src/stdio/getdelim.c
++++ b/src/stdio/getdelim.c
+@@ -27,17 +27,18 @@ ssize_t getdelim(char **restrict s, size
+ 	for (;;) {
+ 		z = memchr(f->rpos, delim, f->rend - f->rpos);
+ 		k = z ? z - f->rpos + 1 : f->rend - f->rpos;
+-		if (i+k >= *n) {
++		if (i+k+1 >= *n) {
+ 			if (k >= SIZE_MAX/2-i) goto oom;
+-			*n = i+k+2;
+-			if (*n < SIZE_MAX/4) *n *= 2;
+-			tmp = realloc(*s, *n);
++			size_t m = i+k+2;
++			if (!z && m < SIZE_MAX/4) m += m/2;
++			tmp = realloc(*s, m);
+ 			if (!tmp) {
+-				*n = i+k+2;
+-				tmp = realloc(*s, *n);
++				m = i+k+2;
++				tmp = realloc(*s, m);
+ 				if (!tmp) goto oom;
+ 			}
+ 			*s = tmp;
++			*n = m;
+ 		}
+ 		memcpy(*s+i, f->rpos, k);
+ 		f->rpos += k;
+--- /dev/null
++++ b/src/string/arm/__aeabi_memclr.c
+@@ -0,0 +1,9 @@
++#include <string.h>
++#include "libc.h"
++
++void __aeabi_memclr(void *dest, size_t n)
++{
++	memset(dest, 0, n);
++}
++weak_alias(__aeabi_memclr, __aeabi_memclr4);
++weak_alias(__aeabi_memclr, __aeabi_memclr8);
+--- /dev/null
++++ b/src/string/arm/__aeabi_memcpy.c
+@@ -0,0 +1,9 @@
++#include <string.h>
++#include "libc.h"
++
++void __aeabi_memcpy(void *restrict dest, const void *restrict src, size_t n)
++{
++	memcpy(dest, src, n);
++}
++weak_alias(__aeabi_memcpy, __aeabi_memcpy4);
++weak_alias(__aeabi_memcpy, __aeabi_memcpy8);
+--- /dev/null
++++ b/src/string/arm/__aeabi_memmove.c
+@@ -0,0 +1,9 @@
++#include <string.h>
++#include "libc.h"
++
++void __aeabi_memmove(void *dest, const void *src, size_t n)
++{
++	memmove(dest, src, n);
++}
++weak_alias(__aeabi_memmove, __aeabi_memmove4);
++weak_alias(__aeabi_memmove, __aeabi_memmove8);
+--- /dev/null
++++ b/src/string/arm/__aeabi_memset.c
+@@ -0,0 +1,9 @@
++#include <string.h>
++#include "libc.h"
++
++void __aeabi_memset(void *dest, size_t n, int c)
++{
++	memset(dest, c, n);
++}
++weak_alias(__aeabi_memset, __aeabi_memset4);
++weak_alias(__aeabi_memset, __aeabi_memset8);
+--- /dev/null
++++ b/src/string/arm/memcpy.c
+@@ -0,0 +1,3 @@
++#if __ARMEB__
++#include "../memcpy.c"
++#endif
+--- /dev/null
++++ b/src/string/arm/memcpy_le.S
+@@ -0,0 +1,383 @@
++#ifndef __ARMEB__
++
++/*
++ * Copyright (C) 2008 The Android Open Source Project
++ * All rights reserved.
++ *
++ * Redistribution and use in source and binary forms, with or without
++ * modification, are permitted provided that the following conditions
++ * are met:
++ *  * Redistributions of source code must retain the above copyright
++ *    notice, this list of conditions and the following disclaimer.
++ *  * Redistributions in binary form must reproduce the above copyright
++ *    notice, this list of conditions and the following disclaimer in
++ *    the documentation and/or other materials provided with the
++ *    distribution.
++ *
++ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
++ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
++ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
++ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
++ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
++ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
++ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
++ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
++ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
++ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
++ * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
++ * SUCH DAMAGE.
++ */
++
++
++/*
++ * Optimized memcpy() for ARM.
++ *
++ * note that memcpy() always returns the destination pointer,
++ * so we have to preserve R0.
++  */
++
++/*
++ * This file has been modified from the original for use in musl libc.
++ * The main changes are: addition of .type memcpy,%function to make the
++ * code safely callable from thumb mode, adjusting the return
++ * instructions to be compatible with pre-thumb ARM cpus, and removal
++ * of prefetch code that is not compatible with older cpus.
++ */
++
++.syntax unified
++
++.global memcpy
++.type memcpy,%function
++memcpy:
++	/* The stack must always be 64-bits aligned to be compliant with the
++	 * ARM ABI. Since we have to save R0, we might as well save R4
++	 * which we can use for better pipelining of the reads below
++	 */
++	.fnstart
++	.save       {r0, r4, lr}
++	stmfd       sp!, {r0, r4, lr}
++	/* Making room for r5-r11 which will be spilled later */
++	.pad        #28
++	sub         sp, sp, #28
++
++	/* it simplifies things to take care of len<4 early */
++	cmp     r2, #4
++	blo     copy_last_3_and_return
++
++	/* compute the offset to align the source
++	 * offset = (4-(src&3))&3 = -src & 3
++	 */
++	rsb     r3, r1, #0
++	ands    r3, r3, #3
++	beq     src_aligned
++
++	/* align source to 32 bits. We need to insert 2 instructions between
++	 * a ldr[b|h] and str[b|h] because byte and half-word instructions
++	 * stall 2 cycles.
++	 */
++	movs    r12, r3, lsl #31
++	sub     r2, r2, r3              /* we know that r3 <= r2 because r2 >= 4 */
++	ldrbmi r3, [r1], #1
++	ldrbcs r4, [r1], #1
++	ldrbcs r12,[r1], #1
++	strbmi r3, [r0], #1
++	strbcs r4, [r0], #1
++	strbcs r12,[r0], #1
++
++src_aligned:
++
++	/* see if src and dst are aligned together (congruent) */
++	eor     r12, r0, r1
++	tst     r12, #3
++	bne     non_congruent
++
++	/* Use post-incriment mode for stm to spill r5-r11 to reserved stack
++	 * frame. Don't update sp.
++	 */
++	stmea   sp, {r5-r11}
++
++	/* align the destination to a cache-line */
++	rsb     r3, r0, #0
++	ands    r3, r3, #0x1C
++	beq     congruent_aligned32
++	cmp     r3, r2
++	andhi   r3, r2, #0x1C
++
++	/* conditionnaly copies 0 to 7 words (length in r3) */
++	movs    r12, r3, lsl #28
++	ldmcs   r1!, {r4, r5, r6, r7}           /* 16 bytes */
++	ldmmi   r1!, {r8, r9}                   /*  8 bytes */
++	stmcs   r0!, {r4, r5, r6, r7}
++	stmmi   r0!, {r8, r9}
++	tst     r3, #0x4
++	ldrne   r10,[r1], #4                    /*  4 bytes */
++	strne   r10,[r0], #4
++	sub     r2, r2, r3
++
++congruent_aligned32:
++	/*
++	 * here source is aligned to 32 bytes.
++	 */
++
++cached_aligned32:
++	subs    r2, r2, #32
++	blo     less_than_32_left
++
++	/*
++	 * We preload a cache-line up to 64 bytes ahead. On the 926, this will
++	 * stall only until the requested world is fetched, but the linefill
++	 * continues in the the background.
++	 * While the linefill is going, we write our previous cache-line
++	 * into the write-buffer (which should have some free space).
++	 * When the linefill is done, the writebuffer will
++	 * start dumping its content into memory
++	 *
++	 * While all this is going, we then load a full cache line into
++	 * 8 registers, this cache line should be in the cache by now
++	 * (or partly in the cache).
++	 *
++	 * This code should work well regardless of the source/dest alignment.
++	 *
++	 */
++
++	/* Align the preload register to a cache-line because the cpu does
++	 * "critical word first" (the first word requested is loaded first).
++	 */
++	@ bic           r12, r1, #0x1F
++	@ add           r12, r12, #64
++
++1:      ldmia   r1!, { r4-r11 }
++	subs    r2, r2, #32
++
++	/* 
++	 * NOTE: if r12 is more than 64 ahead of r1, the following ldrhi
++	 * for ARM9 preload will not be safely guarded by the preceding subs.
++	 * When it is safely guarded the only possibility to have SIGSEGV here
++	 * is because the caller overstates the length.
++	 */
++	@ ldrhi         r3, [r12], #32      /* cheap ARM9 preload */
++	stmia   r0!, { r4-r11 }
++	bhs     1b
++
++	add     r2, r2, #32
++
++less_than_32_left:
++	/*
++	 * less than 32 bytes left at this point (length in r2)
++	 */
++
++	/* skip all this if there is nothing to do, which should
++	 * be a common case (if not executed the code below takes
++	 * about 16 cycles)
++	 */
++	tst     r2, #0x1F
++	beq     1f
++
++	/* conditionnaly copies 0 to 31 bytes */
++	movs    r12, r2, lsl #28
++	ldmcs   r1!, {r4, r5, r6, r7}           /* 16 bytes */
++	ldmmi   r1!, {r8, r9}                   /*  8 bytes */
++	stmcs   r0!, {r4, r5, r6, r7}
++	stmmi   r0!, {r8, r9}
++	movs    r12, r2, lsl #30
++	ldrcs   r3, [r1], #4                    /*  4 bytes */
++	ldrhmi r4, [r1], #2                     /*  2 bytes */
++	strcs   r3, [r0], #4
++	strhmi r4, [r0], #2
++	tst     r2, #0x1
++	ldrbne r3, [r1]                         /*  last byte  */
++	strbne r3, [r0]
++
++	/* we're done! restore everything and return */
++1:      ldmfd   sp!, {r5-r11}
++	ldmfd   sp!, {r0, r4, lr}
++	bx      lr
++
++	/********************************************************************/
++
++non_congruent:
++	/*
++	 * here source is aligned to 4 bytes
++	 * but destination is not.
++	 *
++	 * in the code below r2 is the number of bytes read
++	 * (the number of bytes written is always smaller, because we have
++	 * partial words in the shift queue)
++	 */
++	cmp     r2, #4
++	blo     copy_last_3_and_return
++
++	/* Use post-incriment mode for stm to spill r5-r11 to reserved stack
++	 * frame. Don't update sp.
++	 */
++	stmea   sp, {r5-r11}
++
++	/* compute shifts needed to align src to dest */
++	rsb     r5, r0, #0
++	and     r5, r5, #3                      /* r5 = # bytes in partial words */
++	mov     r12, r5, lsl #3         /* r12 = right */
++	rsb     lr, r12, #32            /* lr = left  */
++
++	/* read the first word */
++	ldr     r3, [r1], #4
++	sub     r2, r2, #4
++
++	/* write a partial word (0 to 3 bytes), such that destination
++	 * becomes aligned to 32 bits (r5 = nb of words to copy for alignment)
++	 */
++	movs    r5, r5, lsl #31
++	strbmi r3, [r0], #1
++	movmi   r3, r3, lsr #8
++	strbcs r3, [r0], #1
++	movcs   r3, r3, lsr #8
++	strbcs r3, [r0], #1
++	movcs   r3, r3, lsr #8
++
++	cmp     r2, #4
++	blo     partial_word_tail
++
++	/* Align destination to 32 bytes (cache line boundary) */
++1:      tst     r0, #0x1c
++	beq     2f
++	ldr     r5, [r1], #4
++	sub     r2, r2, #4
++	orr     r4, r3, r5,             lsl lr
++	mov     r3, r5,                 lsr r12
++	str     r4, [r0], #4
++	cmp     r2, #4
++	bhs     1b
++	blo     partial_word_tail
++
++	/* copy 32 bytes at a time */
++2:      subs    r2, r2, #32
++	blo     less_than_thirtytwo
++
++	/* Use immediate mode for the shifts, because there is an extra cycle
++	 * for register shifts, which could account for up to 50% of
++	 * performance hit.
++	 */
++
++	cmp     r12, #24
++	beq     loop24
++	cmp     r12, #8
++	beq     loop8
++
++loop16:
++	ldr     r12, [r1], #4
++1:      mov     r4, r12
++	ldmia   r1!, {   r5,r6,r7,  r8,r9,r10,r11}
++	subs    r2, r2, #32
++	ldrhs   r12, [r1], #4
++	orr     r3, r3, r4, lsl #16
++	mov     r4, r4, lsr #16
++	orr     r4, r4, r5, lsl #16
++	mov     r5, r5, lsr #16
++	orr     r5, r5, r6, lsl #16
++	mov     r6, r6, lsr #16
++	orr     r6, r6, r7, lsl #16
++	mov     r7, r7, lsr #16
++	orr     r7, r7, r8, lsl #16
++	mov     r8, r8, lsr #16
++	orr     r8, r8, r9, lsl #16
++	mov     r9, r9, lsr #16
++	orr     r9, r9, r10, lsl #16
++	mov     r10, r10,               lsr #16
++	orr     r10, r10, r11, lsl #16
++	stmia   r0!, {r3,r4,r5,r6, r7,r8,r9,r10}
++	mov     r3, r11, lsr #16
++	bhs     1b
++	b       less_than_thirtytwo
++
++loop8:
++	ldr     r12, [r1], #4
++1:      mov     r4, r12
++	ldmia   r1!, {   r5,r6,r7,  r8,r9,r10,r11}
++	subs    r2, r2, #32
++	ldrhs   r12, [r1], #4
++	orr     r3, r3, r4, lsl #24
++	mov     r4, r4, lsr #8
++	orr     r4, r4, r5, lsl #24
++	mov     r5, r5, lsr #8
++	orr     r5, r5, r6, lsl #24
++	mov     r6, r6,  lsr #8
++	orr     r6, r6, r7, lsl #24
++	mov     r7, r7,  lsr #8
++	orr     r7, r7, r8,             lsl #24
++	mov     r8, r8,  lsr #8
++	orr     r8, r8, r9,             lsl #24
++	mov     r9, r9,  lsr #8
++	orr     r9, r9, r10,    lsl #24
++	mov     r10, r10, lsr #8
++	orr     r10, r10, r11,  lsl #24
++	stmia   r0!, {r3,r4,r5,r6, r7,r8,r9,r10}
++	mov     r3, r11, lsr #8
++	bhs     1b
++	b       less_than_thirtytwo
++
++loop24:
++	ldr     r12, [r1], #4
++1:      mov     r4, r12
++	ldmia   r1!, {   r5,r6,r7,  r8,r9,r10,r11}
++	subs    r2, r2, #32
++	ldrhs   r12, [r1], #4
++	orr     r3, r3, r4, lsl #8
++	mov     r4, r4, lsr #24
++	orr     r4, r4, r5, lsl #8
++	mov     r5, r5, lsr #24
++	orr     r5, r5, r6, lsl #8
++	mov     r6, r6, lsr #24
++	orr     r6, r6, r7, lsl #8
++	mov     r7, r7, lsr #24
++	orr     r7, r7, r8, lsl #8
++	mov     r8, r8, lsr #24
++	orr     r8, r8, r9, lsl #8
++	mov     r9, r9, lsr #24
++	orr     r9, r9, r10, lsl #8
++	mov     r10, r10, lsr #24
++	orr     r10, r10, r11, lsl #8
++	stmia   r0!, {r3,r4,r5,r6, r7,r8,r9,r10}
++	mov     r3, r11, lsr #24
++	bhs     1b
++
++less_than_thirtytwo:
++	/* copy the last 0 to 31 bytes of the source */
++	rsb     r12, lr, #32            /* we corrupted r12, recompute it  */
++	add     r2, r2, #32
++	cmp     r2, #4
++	blo     partial_word_tail
++
++1:      ldr     r5, [r1], #4
++	sub     r2, r2, #4
++	orr     r4, r3, r5,             lsl lr
++	mov     r3,     r5,                     lsr r12
++	str     r4, [r0], #4
++	cmp     r2, #4
++	bhs     1b
++
++partial_word_tail:
++	/* we have a partial word in the input buffer */
++	movs    r5, lr, lsl #(31-3)
++	strbmi r3, [r0], #1
++	movmi   r3, r3, lsr #8
++	strbcs r3, [r0], #1
++	movcs   r3, r3, lsr #8
++	strbcs r3, [r0], #1
++
++	/* Refill spilled registers from the stack. Don't update sp. */
++	ldmfd   sp, {r5-r11}
++
++copy_last_3_and_return:
++	movs    r2, r2, lsl #31 /* copy remaining 0, 1, 2 or 3 bytes */
++	ldrbmi r2, [r1], #1
++	ldrbcs r3, [r1], #1
++	ldrbcs r12,[r1]
++	strbmi r2, [r0], #1
++	strbcs r3, [r0], #1
++	strbcs r12,[r0]
++
++	/* we're done! restore sp and spilled registers and return */
++	add     sp,  sp, #28
++	ldmfd   sp!, {r0, r4, lr}
++	bx      lr
++
++#endif
+--- a/src/string/armel/memcpy.s
++++ /dev/null
+@@ -1,381 +0,0 @@
+-/*
+- * Copyright (C) 2008 The Android Open Source Project
+- * All rights reserved.
+- *
+- * Redistribution and use in source and binary forms, with or without
+- * modification, are permitted provided that the following conditions
+- * are met:
+- *  * Redistributions of source code must retain the above copyright
+- *    notice, this list of conditions and the following disclaimer.
+- *  * Redistributions in binary form must reproduce the above copyright
+- *    notice, this list of conditions and the following disclaimer in
+- *    the documentation and/or other materials provided with the
+- *    distribution.
+- *
+- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+- * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+- * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+- * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+- * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+- * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+- * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+- * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+- * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
+- * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+- * SUCH DAMAGE.
+- */
+-
+-
+-/*
+- * Optimized memcpy() for ARM.
+- *
+- * note that memcpy() always returns the destination pointer,
+- * so we have to preserve R0.
+-  */
+-
+-/*
+- * This file has been modified from the original for use in musl libc.
+- * The main changes are: addition of .type memcpy,%function to make the
+- * code safely callable from thumb mode, adjusting the return
+- * instructions to be compatible with pre-thumb ARM cpus, and removal
+- * of prefetch code that is not compatible with older cpus.
+- */
+-
+-.global memcpy
+-.type memcpy,%function
+-memcpy:
+-	/* The stack must always be 64-bits aligned to be compliant with the
+-	 * ARM ABI. Since we have to save R0, we might as well save R4
+-	 * which we can use for better pipelining of the reads below
+-	 */
+-	.fnstart
+-	.save       {r0, r4, lr}
+-	stmfd       sp!, {r0, r4, lr}
+-	/* Making room for r5-r11 which will be spilled later */
+-	.pad        #28
+-	sub         sp, sp, #28
+-
+-	/* it simplifies things to take care of len<4 early */
+-	cmp     r2, #4
+-	blo     copy_last_3_and_return
+-
+-	/* compute the offset to align the source
+-	 * offset = (4-(src&3))&3 = -src & 3
+-	 */
+-	rsb     r3, r1, #0
+-	ands    r3, r3, #3
+-	beq     src_aligned
+-
+-	/* align source to 32 bits. We need to insert 2 instructions between
+-	 * a ldr[b|h] and str[b|h] because byte and half-word instructions
+-	 * stall 2 cycles.
+-	 */
+-	movs    r12, r3, lsl #31
+-	sub     r2, r2, r3              /* we know that r3 <= r2 because r2 >= 4 */
+-	.word 0x44d13001 /* ldrbmi r3, [r1], #1 */
+-	.word 0x24d14001 /* ldrbcs r4, [r1], #1 */
+-	.word 0x24d1c001 /* ldrbcs r12,[r1], #1 */
+-	.word 0x44c03001 /* strbmi r3, [r0], #1 */
+-	.word 0x24c04001 /* strbcs r4, [r0], #1 */
+-	.word 0x24c0c001 /* strbcs r12,[r0], #1 */
+-
+-src_aligned:
+-
+-	/* see if src and dst are aligned together (congruent) */
+-	eor     r12, r0, r1
+-	tst     r12, #3
+-	bne     non_congruent
+-
+-	/* Use post-incriment mode for stm to spill r5-r11 to reserved stack
+-	 * frame. Don't update sp.
+-	 */
+-	stmea   sp, {r5-r11}
+-
+-	/* align the destination to a cache-line */
+-	rsb     r3, r0, #0
+-	ands    r3, r3, #0x1C
+-	beq     congruent_aligned32
+-	cmp     r3, r2
+-	andhi   r3, r2, #0x1C
+-
+-	/* conditionnaly copies 0 to 7 words (length in r3) */
+-	movs    r12, r3, lsl #28
+-	ldmcs   r1!, {r4, r5, r6, r7}           /* 16 bytes */
+-	ldmmi   r1!, {r8, r9}                   /*  8 bytes */
+-	stmcs   r0!, {r4, r5, r6, r7}
+-	stmmi   r0!, {r8, r9}
+-	tst     r3, #0x4
+-	ldrne   r10,[r1], #4                    /*  4 bytes */
+-	strne   r10,[r0], #4
+-	sub     r2, r2, r3
+-
+-congruent_aligned32:
+-	/*
+-	 * here source is aligned to 32 bytes.
+-	 */
+-
+-cached_aligned32:
+-	subs    r2, r2, #32
+-	blo     less_than_32_left
+-
+-	/*
+-	 * We preload a cache-line up to 64 bytes ahead. On the 926, this will
+-	 * stall only until the requested world is fetched, but the linefill
+-	 * continues in the the background.
+-	 * While the linefill is going, we write our previous cache-line
+-	 * into the write-buffer (which should have some free space).
+-	 * When the linefill is done, the writebuffer will
+-	 * start dumping its content into memory
+-	 *
+-	 * While all this is going, we then load a full cache line into
+-	 * 8 registers, this cache line should be in the cache by now
+-	 * (or partly in the cache).
+-	 *
+-	 * This code should work well regardless of the source/dest alignment.
+-	 *
+-	 */
+-
+-	/* Align the preload register to a cache-line because the cpu does
+-	 * "critical word first" (the first word requested is loaded first).
+-	 */
+-	@ bic           r12, r1, #0x1F
+-	@ add           r12, r12, #64
+-
+-1:      ldmia   r1!, { r4-r11 }
+-	subs    r2, r2, #32
+-
+-	/* 
+-	 * NOTE: if r12 is more than 64 ahead of r1, the following ldrhi
+-	 * for ARM9 preload will not be safely guarded by the preceding subs.
+-	 * When it is safely guarded the only possibility to have SIGSEGV here
+-	 * is because the caller overstates the length.
+-	 */
+-	@ ldrhi         r3, [r12], #32      /* cheap ARM9 preload */
+-	stmia   r0!, { r4-r11 }
+-	bhs     1b
+-
+-	add     r2, r2, #32
+-
+-less_than_32_left:
+-	/*
+-	 * less than 32 bytes left at this point (length in r2)
+-	 */
+-
+-	/* skip all this if there is nothing to do, which should
+-	 * be a common case (if not executed the code below takes
+-	 * about 16 cycles)
+-	 */
+-	tst     r2, #0x1F
+-	beq     1f
+-
+-	/* conditionnaly copies 0 to 31 bytes */
+-	movs    r12, r2, lsl #28
+-	ldmcs   r1!, {r4, r5, r6, r7}           /* 16 bytes */
+-	ldmmi   r1!, {r8, r9}                   /*  8 bytes */
+-	stmcs   r0!, {r4, r5, r6, r7}
+-	stmmi   r0!, {r8, r9}
+-	movs    r12, r2, lsl #30
+-	ldrcs   r3, [r1], #4                    /*  4 bytes */
+-	.word 0x40d140b2 /* ldrhmi r4, [r1], #2 */ /*  2 bytes */
+-	strcs   r3, [r0], #4
+-	.word 0x40c040b2 /* strhmi r4, [r0], #2 */
+-	tst     r2, #0x1
+-	.word 0x15d13000 /* ldrbne r3, [r1] */  /*  last byte  */
+-	.word 0x15c03000 /* strbne r3, [r0] */
+-
+-	/* we're done! restore everything and return */
+-1:      ldmfd   sp!, {r5-r11}
+-	ldmfd   sp!, {r0, r4, lr}
+-	tst     lr, #1
+-	moveq   pc, lr
+-	bx      lr
+-
+-	/********************************************************************/
+-
+-non_congruent:
+-	/*
+-	 * here source is aligned to 4 bytes
+-	 * but destination is not.
+-	 *
+-	 * in the code below r2 is the number of bytes read
+-	 * (the number of bytes written is always smaller, because we have
+-	 * partial words in the shift queue)
+-	 */
+-	cmp     r2, #4
+-	blo     copy_last_3_and_return
+-
+-	/* Use post-incriment mode for stm to spill r5-r11 to reserved stack
+-	 * frame. Don't update sp.
+-	 */
+-	stmea   sp, {r5-r11}
+-
+-	/* compute shifts needed to align src to dest */
+-	rsb     r5, r0, #0
+-	and     r5, r5, #3                      /* r5 = # bytes in partial words */
+-	mov     r12, r5, lsl #3         /* r12 = right */
+-	rsb     lr, r12, #32            /* lr = left  */
+-
+-	/* read the first word */
+-	ldr     r3, [r1], #4
+-	sub     r2, r2, #4
+-
+-	/* write a partial word (0 to 3 bytes), such that destination
+-	 * becomes aligned to 32 bits (r5 = nb of words to copy for alignment)
+-	 */
+-	movs    r5, r5, lsl #31
+-	.word 0x44c03001 /* strbmi r3, [r0], #1 */
+-	movmi   r3, r3, lsr #8
+-	.word 0x24c03001 /* strbcs r3, [r0], #1 */
+-	movcs   r3, r3, lsr #8
+-	.word 0x24c03001 /* strbcs r3, [r0], #1 */
+-	movcs   r3, r3, lsr #8
+-
+-	cmp     r2, #4
+-	blo     partial_word_tail
+-
+-	/* Align destination to 32 bytes (cache line boundary) */
+-1:      tst     r0, #0x1c
+-	beq     2f
+-	ldr     r5, [r1], #4
+-	sub     r2, r2, #4
+-	orr     r4, r3, r5,             lsl lr
+-	mov     r3, r5,                 lsr r12
+-	str     r4, [r0], #4
+-	cmp     r2, #4
+-	bhs     1b
+-	blo     partial_word_tail
+-
+-	/* copy 32 bytes at a time */
+-2:      subs    r2, r2, #32
+-	blo     less_than_thirtytwo
+-
+-	/* Use immediate mode for the shifts, because there is an extra cycle
+-	 * for register shifts, which could account for up to 50% of
+-	 * performance hit.
+-	 */
+-
+-	cmp     r12, #24
+-	beq     loop24
+-	cmp     r12, #8
+-	beq     loop8
+-
+-loop16:
+-	ldr     r12, [r1], #4
+-1:      mov     r4, r12
+-	ldmia   r1!, {   r5,r6,r7,  r8,r9,r10,r11}
+-	subs    r2, r2, #32
+-	ldrhs   r12, [r1], #4
+-	orr     r3, r3, r4, lsl #16
+-	mov     r4, r4, lsr #16
+-	orr     r4, r4, r5, lsl #16
+-	mov     r5, r5, lsr #16
+-	orr     r5, r5, r6, lsl #16
+-	mov     r6, r6, lsr #16
+-	orr     r6, r6, r7, lsl #16
+-	mov     r7, r7, lsr #16
+-	orr     r7, r7, r8, lsl #16
+-	mov     r8, r8, lsr #16
+-	orr     r8, r8, r9, lsl #16
+-	mov     r9, r9, lsr #16
+-	orr     r9, r9, r10, lsl #16
+-	mov     r10, r10,               lsr #16
+-	orr     r10, r10, r11, lsl #16
+-	stmia   r0!, {r3,r4,r5,r6, r7,r8,r9,r10}
+-	mov     r3, r11, lsr #16
+-	bhs     1b
+-	b       less_than_thirtytwo
+-
+-loop8:
+-	ldr     r12, [r1], #4
+-1:      mov     r4, r12
+-	ldmia   r1!, {   r5,r6,r7,  r8,r9,r10,r11}
+-	subs    r2, r2, #32
+-	ldrhs   r12, [r1], #4
+-	orr     r3, r3, r4, lsl #24
+-	mov     r4, r4, lsr #8
+-	orr     r4, r4, r5, lsl #24
+-	mov     r5, r5, lsr #8
+-	orr     r5, r5, r6, lsl #24
+-	mov     r6, r6,  lsr #8
+-	orr     r6, r6, r7, lsl #24
+-	mov     r7, r7,  lsr #8
+-	orr     r7, r7, r8,             lsl #24
+-	mov     r8, r8,  lsr #8
+-	orr     r8, r8, r9,             lsl #24
+-	mov     r9, r9,  lsr #8
+-	orr     r9, r9, r10,    lsl #24
+-	mov     r10, r10, lsr #8
+-	orr     r10, r10, r11,  lsl #24
+-	stmia   r0!, {r3,r4,r5,r6, r7,r8,r9,r10}
+-	mov     r3, r11, lsr #8
+-	bhs     1b
+-	b       less_than_thirtytwo
+-
+-loop24:
+-	ldr     r12, [r1], #4
+-1:      mov     r4, r12
+-	ldmia   r1!, {   r5,r6,r7,  r8,r9,r10,r11}
+-	subs    r2, r2, #32
+-	ldrhs   r12, [r1], #4
+-	orr     r3, r3, r4, lsl #8
+-	mov     r4, r4, lsr #24
+-	orr     r4, r4, r5, lsl #8
+-	mov     r5, r5, lsr #24
+-	orr     r5, r5, r6, lsl #8
+-	mov     r6, r6, lsr #24
+-	orr     r6, r6, r7, lsl #8
+-	mov     r7, r7, lsr #24
+-	orr     r7, r7, r8, lsl #8
+-	mov     r8, r8, lsr #24
+-	orr     r8, r8, r9, lsl #8
+-	mov     r9, r9, lsr #24
+-	orr     r9, r9, r10, lsl #8
+-	mov     r10, r10, lsr #24
+-	orr     r10, r10, r11, lsl #8
+-	stmia   r0!, {r3,r4,r5,r6, r7,r8,r9,r10}
+-	mov     r3, r11, lsr #24
+-	bhs     1b
+-
+-less_than_thirtytwo:
+-	/* copy the last 0 to 31 bytes of the source */
+-	rsb     r12, lr, #32            /* we corrupted r12, recompute it  */
+-	add     r2, r2, #32
+-	cmp     r2, #4
+-	blo     partial_word_tail
+-
+-1:      ldr     r5, [r1], #4
+-	sub     r2, r2, #4
+-	orr     r4, r3, r5,             lsl lr
+-	mov     r3,     r5,                     lsr r12
+-	str     r4, [r0], #4
+-	cmp     r2, #4
+-	bhs     1b
+-
+-partial_word_tail:
+-	/* we have a partial word in the input buffer */
+-	movs    r5, lr, lsl #(31-3)
+-	.word 0x44c03001 /* strbmi r3, [r0], #1 */
+-	movmi   r3, r3, lsr #8
+-	.word 0x24c03001 /* strbcs r3, [r0], #1 */
+-	movcs   r3, r3, lsr #8
+-	.word 0x24c03001 /* strbcs r3, [r0], #1 */
+-
+-	/* Refill spilled registers from the stack. Don't update sp. */
+-	ldmfd   sp, {r5-r11}
+-
+-copy_last_3_and_return:
+-	movs    r2, r2, lsl #31 /* copy remaining 0, 1, 2 or 3 bytes */
+-	.word 0x44d12001 /* ldrbmi r2, [r1], #1 */
+-	.word 0x24d13001 /* ldrbcs r3, [r1], #1 */
+-	.word 0x25d1c000 /* ldrbcs r12,[r1] */
+-	.word 0x44c02001 /* strbmi r2, [r0], #1 */
+-	.word 0x24c03001 /* strbcs r3, [r0], #1 */
+-	.word 0x25c0c000 /* strbcs r12,[r0] */
+-
+-	/* we're done! restore sp and spilled registers and return */
+-	add     sp,  sp, #28
+-	ldmfd   sp!, {r0, r4, lr}
+-	tst     lr, #1
+-	moveq   pc, lr
+-	bx      lr
+--- a/src/string/armel/memcpy.sub
++++ /dev/null
+@@ -1 +0,0 @@
+-memcpy.s
+--- a/src/string/armhf/memcpy.sub
++++ /dev/null
+@@ -1 +0,0 @@
+-../armel/memcpy.s
+--- a/src/thread/__syscall_cp.c
++++ b/src/thread/__syscall_cp.c
+@@ -1,9 +1,7 @@
+ #include "pthread_impl.h"
+ #include "syscall.h"
+ 
+-#ifdef SHARED
+ __attribute__((__visibility__("hidden")))
+-#endif
+ long __syscall_cp_c();
+ 
+ static long sccp(syscall_arg_t nr,
+--- a/src/thread/__tls_get_addr.c
++++ b/src/thread/__tls_get_addr.c
+@@ -1,16 +1,16 @@
+ #include <stddef.h>
+ #include "pthread_impl.h"
++#include "libc.h"
++
++__attribute__((__visibility__("hidden")))
++void *__tls_get_new(size_t *);
+ 
+ void *__tls_get_addr(size_t *v)
+ {
+ 	pthread_t self = __pthread_self();
+-#ifdef SHARED
+-	__attribute__((__visibility__("hidden")))
+-	void *__tls_get_new(size_t *);
+ 	if (v[0]<=(size_t)self->dtv[0])
+ 		return (char *)self->dtv[v[0]]+v[1]+DTP_OFFSET;
+ 	return __tls_get_new(v);
+-#else
+-	return (char *)self->dtv[1]+v[1]+DTP_OFFSET;
+-#endif
+ }
++
++weak_alias(__tls_get_addr, __tls_get_new);
+--- a/src/thread/aarch64/syscall_cp.s
++++ b/src/thread/aarch64/syscall_cp.s
+@@ -17,7 +17,7 @@
+ __syscall_cp_asm:
+ __cp_begin:
+ 	ldr w0,[x0]
+-	cbnz w0,1f
++	cbnz w0,__cp_cancel
+ 	mov x8,x1
+ 	mov x0,x2
+ 	mov x1,x3
+@@ -28,6 +28,5 @@ __cp_begin:
+ 	svc 0
+ __cp_end:
+ 	ret
+-
+-	// cbnz might not be able to jump far enough
+-1:	b __cancel
++__cp_cancel:
++	b __cancel
+--- /dev/null
++++ b/src/thread/arm/__set_thread_area.c
+@@ -0,0 +1,49 @@
++#include <stdint.h>
++#include <elf.h>
++#include "pthread_impl.h"
++#include "libc.h"
++
++#define HWCAP_TLS (1 << 15)
++
++extern const unsigned char __attribute__((__visibility__("hidden")))
++	__a_barrier_dummy[], __a_barrier_oldkuser[],
++	__a_barrier_v6[], __a_barrier_v7[],
++	__a_cas_dummy[], __a_cas_v6[], __a_cas_v7[],
++	__a_gettp_dummy[];
++
++#define __a_barrier_kuser 0xffff0fa0
++#define __a_cas_kuser 0xffff0fc0
++#define __a_gettp_kuser 0xffff0fe0
++
++extern uintptr_t __attribute__((__visibility__("hidden")))
++	__a_barrier_ptr, __a_cas_ptr, __a_gettp_ptr;
++
++#define SET(op,ver) (__a_##op##_ptr = \
++	(uintptr_t)__a_##op##_##ver - (uintptr_t)__a_##op##_dummy)
++
++int __set_thread_area(void *p)
++{
++#if !__ARM_ARCH_7A__ && !__ARM_ARCH_7R__ && __ARM_ARCH < 7
++	if (__hwcap & HWCAP_TLS) {
++		size_t *aux;
++		SET(cas, v7);
++		SET(barrier, v7);
++		for (aux=libc.auxv; *aux; aux+=2) {
++			if (*aux != AT_PLATFORM) continue;
++			const char *s = (void *)aux[1];
++			if (s[0]!='v' || s[1]!='6' || s[2]-'0'<10u) break;
++			SET(cas, v6);
++			SET(barrier, v6);
++			break;
++		}
++	} else {
++		int ver = *(int *)0xffff0ffc;
++		SET(gettp, kuser);
++		SET(cas, kuser);
++		SET(barrier, kuser);
++		if (ver < 2) a_crash();
++		if (ver < 3) SET(barrier, oldkuser);
++	}
++#endif
++	return __syscall(0xf0005, p);
++}
+--- a/src/thread/arm/__set_thread_area.s
++++ /dev/null
+@@ -1 +0,0 @@
+-/* Replaced by C code in arch/arm/src */
+--- a/src/thread/arm/__unmapself.s
++++ b/src/thread/arm/__unmapself.s
+@@ -1,3 +1,4 @@
++.syntax unified
+ .text
+ .global __unmapself
+ .type   __unmapself,%function
+--- /dev/null
++++ b/src/thread/arm/atomics.s
+@@ -0,0 +1,111 @@
++.syntax unified
++.text
++
++.global __a_barrier
++.hidden __a_barrier
++.type __a_barrier,%function
++__a_barrier:
++	ldr ip,1f
++	ldr ip,[pc,ip]
++	add pc,pc,ip
++1:	.word __a_barrier_ptr-1b
++.global __a_barrier_dummy
++.hidden __a_barrier_dummy
++__a_barrier_dummy:
++	bx lr
++.global __a_barrier_oldkuser
++.hidden __a_barrier_oldkuser
++__a_barrier_oldkuser:
++	push {r0,r1,r2,r3,ip,lr}
++	mov r1,r0
++	mov r2,sp
++	ldr ip,=0xffff0fc0
++	mov lr,pc
++	mov pc,ip
++	pop {r0,r1,r2,r3,ip,lr}
++	bx lr
++.global __a_barrier_v6
++.hidden __a_barrier_v6
++__a_barrier_v6:
++	mcr p15,0,r0,c7,c10,5
++	bx lr
++.global __a_barrier_v7
++.hidden __a_barrier_v7
++__a_barrier_v7:
++	.word 0xf57ff05b        /* dmb ish */
++	bx lr
++
++.global __a_cas
++.hidden __a_cas
++.type __a_cas,%function
++__a_cas:
++	ldr ip,1f
++	ldr ip,[pc,ip]
++	add pc,pc,ip
++1:	.word __a_cas_ptr-1b
++.global __a_cas_dummy
++.hidden __a_cas_dummy
++__a_cas_dummy:
++	mov r3,r0
++	ldr r0,[r2]
++	subs r0,r3,r0
++	streq r1,[r2]
++	bx lr
++.global __a_cas_v6
++.hidden __a_cas_v6
++__a_cas_v6:
++	mov r3,r0
++	mcr p15,0,r0,c7,c10,5
++1:	.word 0xe1920f9f        /* ldrex r0,[r2] */
++	subs r0,r3,r0
++	.word 0x01820f91        /* strexeq r0,r1,[r2] */
++	teqeq r0,#1
++	beq 1b
++	mcr p15,0,r0,c7,c10,5
++	bx lr
++.global __a_cas_v7
++.hidden __a_cas_v7
++__a_cas_v7:
++	mov r3,r0
++	.word 0xf57ff05b        /* dmb ish */
++1:	.word 0xe1920f9f        /* ldrex r0,[r2] */
++	subs r0,r3,r0
++	.word 0x01820f91        /* strexeq r0,r1,[r2] */
++	teqeq r0,#1
++	beq 1b
++	.word 0xf57ff05b        /* dmb ish */
++	bx lr
++
++.global __aeabi_read_tp
++.type __aeabi_read_tp,%function
++__aeabi_read_tp:
++
++.global __a_gettp
++.hidden __a_gettp
++.type __a_gettp,%function
++__a_gettp:
++	ldr r0,1f
++	ldr r0,[pc,r0]
++	add pc,pc,r0
++1:	.word __a_gettp_ptr-1b
++.global __a_gettp_dummy
++.hidden __a_gettp_dummy
++__a_gettp_dummy:
++	mrc p15,0,r0,c13,c0,3
++	bx lr
++
++.data
++.global __a_barrier_ptr
++.hidden __a_barrier_ptr
++__a_barrier_ptr:
++	.word 0
++
++.global __a_cas_ptr
++.hidden __a_cas_ptr
++__a_cas_ptr:
++	.word 0
++
++.global __a_gettp_ptr
++.hidden __a_gettp_ptr
++__a_gettp_ptr:
++	.word 0
+--- a/src/thread/arm/clone.s
++++ b/src/thread/arm/clone.s
+@@ -1,3 +1,4 @@
++.syntax unified
+ .text
+ .global __clone
+ .type   __clone,%function
+@@ -15,8 +16,6 @@ __clone:
+ 	tst r0,r0
+ 	beq 1f
+ 	ldmfd sp!,{r4,r5,r6,r7}
+-	tst lr,#1
+-	moveq pc,lr
+ 	bx lr
+ 
+ 1:	mov r0,r6
+--- a/src/thread/arm/syscall_cp.s
++++ b/src/thread/arm/syscall_cp.s
+@@ -1,3 +1,4 @@
++.syntax unified
+ .global __cp_begin
+ .hidden __cp_begin
+ .global __cp_end
+@@ -22,8 +23,6 @@ __cp_begin:
+ 	svc 0
+ __cp_end:
+ 	ldmfd sp!,{r4,r5,r6,r7,lr}
+-	tst lr,#1
+-	moveq pc,lr
+ 	bx lr
+ __cp_cancel:
+ 	ldmfd sp!,{r4,r5,r6,r7,lr}
+--- a/src/thread/microblaze/syscall_cp.s
++++ b/src/thread/microblaze/syscall_cp.s
+@@ -11,7 +11,7 @@
+ __syscall_cp_asm:
+ __cp_begin:
+ 	lwi     r5, r5, 0
+-	bnei    r5, __cancel
++	bnei    r5, __cp_cancel
+ 	addi    r12, r6, 0
+ 	add     r5, r7, r0
+ 	add     r6, r8, r0
+@@ -23,3 +23,5 @@ __cp_begin:
+ __cp_end:
+ 	rtsd    r15, 8
+ 	nop
++__cp_cancel:
++	bri     __cancel
+--- a/src/thread/or1k/syscall_cp.s
++++ b/src/thread/or1k/syscall_cp.s
+@@ -12,7 +12,7 @@ __syscall_cp_asm:
+ __cp_begin:
+ 	l.lwz	r3, 0(r3)
+ 	l.sfeqi	r3, 0
+-	l.bnf	__cancel
++	l.bnf	__cp_cancel
+ 	 l.ori	r11, r4, 0
+ 	l.ori	r3, r5, 0
+ 	l.ori	r4, r6, 0
+@@ -24,3 +24,6 @@ __cp_begin:
+ __cp_end:
+ 	l.jr	r9
+ 	 l.nop
++__cp_cancel:
++	l.j	__cancel
++	 l.nop
+--- a/src/thread/powerpc/syscall_cp.s
++++ b/src/thread/powerpc/syscall_cp.s
+@@ -38,7 +38,7 @@ __cp_begin:
+ 	cmpwi cr7, 0, 0 #compare r0 with 0, store result in cr7. 
+ 	beq+ cr7, 1f #jump to label 1 if r0 was 0
+ 	
+-	b __cancel #else call cancel 
++	b __cp_cancel #else call cancel
+ 1:
+ 	#ok, the cancel flag was not set
+ 	# syscall: number goes to r0, the rest 3-8
+@@ -55,3 +55,5 @@ __cp_end:
+ 	#else negate result.
+ 	neg 3, 3
+ 	blr
++__cp_cancel:
++	b __cancel
+--- a/src/thread/pthread_cancel.c
++++ b/src/thread/pthread_cancel.c
+@@ -1,12 +1,11 @@
++#define _GNU_SOURCE
+ #include <string.h>
+ #include "pthread_impl.h"
+ #include "syscall.h"
+ #include "libc.h"
+ 
+-#ifdef SHARED
+ __attribute__((__visibility__("hidden")))
+-#endif
+-long __cancel(), __cp_cancel(), __syscall_cp_asm(), __syscall_cp_c();
++long __cancel(), __syscall_cp_asm(), __syscall_cp_c();
+ 
+ long __cancel()
+ {
+@@ -17,12 +16,6 @@ long __cancel()
+ 	return -ECANCELED;
+ }
+ 
+-/* If __syscall_cp_asm has adjusted the stack pointer, it must provide a
+- * definition of __cp_cancel to undo those adjustments and call __cancel.
+- * Otherwise, __cancel provides a definition for __cp_cancel. */
+-
+-weak_alias(__cancel, __cp_cancel);
+-
+ long __syscall_cp_asm(volatile void *, syscall_arg_t,
+                       syscall_arg_t, syscall_arg_t, syscall_arg_t,
+                       syscall_arg_t, syscall_arg_t, syscall_arg_t);
+@@ -52,24 +45,22 @@ static void _sigaddset(sigset_t *set, in
+ 	set->__bits[s/8/sizeof *set->__bits] |= 1UL<<(s&8*sizeof *set->__bits-1);
+ }
+ 
+-#ifdef SHARED
+ __attribute__((__visibility__("hidden")))
+-#endif
+-extern const char __cp_begin[1], __cp_end[1];
++extern const char __cp_begin[1], __cp_end[1], __cp_cancel[1];
+ 
+ static void cancel_handler(int sig, siginfo_t *si, void *ctx)
+ {
+ 	pthread_t self = __pthread_self();
+ 	ucontext_t *uc = ctx;
+-	const char *ip = ((char **)&uc->uc_mcontext)[CANCEL_REG_IP];
++	uintptr_t pc = uc->uc_mcontext.MC_PC;
+ 
+ 	a_barrier();
+ 	if (!self->cancel || self->canceldisable == PTHREAD_CANCEL_DISABLE) return;
+ 
+ 	_sigaddset(&uc->uc_sigmask, SIGCANCEL);
+ 
+-	if (self->cancelasync || ip >= __cp_begin && ip < __cp_end) {
+-		((char **)&uc->uc_mcontext)[CANCEL_REG_IP] = (char *)__cp_cancel;
++	if (self->cancelasync || pc >= (uintptr_t)__cp_begin && pc < (uintptr_t)__cp_end) {
++		uc->uc_mcontext.MC_PC = (uintptr_t)__cp_cancel;
+ 		return;
+ 	}
+ 
+--- /dev/null
++++ b/src/thread/sh/__set_thread_area.c
+@@ -0,0 +1,40 @@
++#include "pthread_impl.h"
++#include "libc.h"
++#include <elf.h>
++
++/* Also perform sh-specific init */
++
++#define CPU_HAS_LLSC 0x0040
++#define CPU_HAS_CAS_L 0x0400
++
++__attribute__((__visibility__("hidden")))
++extern const char __sh_cas_gusa[], __sh_cas_llsc[], __sh_cas_imask[], __sh_cas_cas_l[];
++
++__attribute__((__visibility__("hidden")))
++const void *__sh_cas_ptr;
++
++__attribute__((__visibility__("hidden")))
++unsigned __sh_nommu;
++
++int __set_thread_area(void *p)
++{
++	size_t *aux;
++	__asm__ __volatile__ ( "ldc %0, gbr" : : "r"(p) : "memory" );
++#ifndef __SH4A__
++	__sh_cas_ptr = __sh_cas_gusa;
++#if !defined(__SH3__) && !defined(__SH4__)
++	for (aux=libc.auxv; *aux; aux+=2) {
++		if (*aux != AT_PLATFORM) continue;
++		const char *s = (void *)aux[1];
++		if (s[0]!='s' || s[1]!='h' || s[2]!='2' || s[3]-'0'<10u) break;
++		__sh_cas_ptr = __sh_cas_imask;
++		__sh_nommu = 1;
++	}
++#endif
++	if (__hwcap & CPU_HAS_CAS_L)
++		__sh_cas_ptr = __sh_cas_cas_l;
++	else if (__hwcap & CPU_HAS_LLSC)
++		__sh_cas_ptr = __sh_cas_llsc;
++#endif
++	return 0;
++}
+--- /dev/null
++++ b/src/thread/sh/atomics.s
+@@ -0,0 +1,65 @@
++/* Contract for all versions is same as cas.l r2,r3,@r0
++ * pr and r1 are also clobbered (by jsr & r1 as temp).
++ * r0,r2,r4-r15 must be preserved.
++ * r3 contains result (==r2 iff cas succeeded). */
++
++	.align 2
++.global __sh_cas_gusa
++.hidden __sh_cas_gusa
++__sh_cas_gusa:
++	mov.l r5,@-r15
++	mov.l r4,@-r15
++	mov r0,r4
++	mova 1f,r0
++	mov r15,r1
++	mov #(0f-1f),r15
++0:	mov.l @r4,r5
++	cmp/eq r5,r2
++	bf 1f
++	mov.l r3,@r4
++1:	mov r1,r15
++	mov r5,r3
++	mov r4,r0
++	mov.l @r15+,r4
++	rts
++	 mov.l @r15+,r5
++
++.global __sh_cas_llsc
++.hidden __sh_cas_llsc
++__sh_cas_llsc:
++	mov r0,r1
++	synco
++0:	movli.l @r1,r0
++	cmp/eq r0,r2
++	bf 1f
++	mov r3,r0
++	movco.l r0,@r1
++	bf 0b
++	mov r2,r0
++1:	synco
++	mov r0,r3
++	rts
++	 mov r1,r0
++
++.global __sh_cas_imask
++.hidden __sh_cas_imask
++__sh_cas_imask:
++	mov r0,r1
++	stc sr,r0
++	mov.l r0,@-r15
++	or #0xf0,r0
++	ldc r0,sr
++	mov.l @r1,r0
++	cmp/eq r0,r2
++	bf 1f
++	mov.l r3,@r1
++1:	ldc.l @r15+,sr
++	mov r0,r3
++	rts
++	 mov r1,r0
++
++.global __sh_cas_cas_l
++.hidden __sh_cas_cas_l
++__sh_cas_cas_l:
++	rts
++	 .word 0x2323 /* cas.l r2,r3,@r0 */
+--- a/src/thread/sh/syscall_cp.s
++++ b/src/thread/sh/syscall_cp.s
+@@ -14,17 +14,8 @@ __syscall_cp_asm:
+ __cp_begin:
+ 	mov.l @r4, r4
+ 	tst   r4, r4
+-	bt    2f
+-
+-	mov.l L1, r0
+-	braf  r0
+-	 nop
+-1:
+-
+-.align 2
+-L1:	.long __cancel@PLT-(1b-.)
+-
+-2:	mov   r5, r3
++	bf    __cp_cancel
++	mov   r5, r3
+ 	mov   r6, r4
+ 	mov   r7, r5
+ 	mov.l @r15, r6
+@@ -43,3 +34,12 @@ __cp_end:
+ 
+ 	rts
+ 	 nop
++
++__cp_cancel:
++	mov.l 2f, r0
++	braf  r0
++	 nop
++1:
++
++.align 2
++2:	.long __cancel@PCREL-(1b-.)
+--- a/src/thread/x32/syscall_cp.s
++++ b/src/thread/x32/syscall_cp.s
+@@ -14,7 +14,7 @@ __syscall_cp_internal:
+ __cp_begin:
+ 	mov (%rdi),%eax
+ 	test %eax,%eax
+-	jnz __cancel
++	jnz __cp_cancel
+ 	mov %rdi,%r11
+ 	mov %rsi,%rax
+ 	mov %rdx,%rdi
+@@ -27,3 +27,5 @@ __cp_begin:
+ 	syscall
+ __cp_end:
+ 	ret
++__cp_cancel:
++	jmp __cancel
+--- a/src/thread/x86_64/syscall_cp.s
++++ b/src/thread/x86_64/syscall_cp.s
+@@ -14,7 +14,7 @@ __syscall_cp_asm:
+ __cp_begin:
+ 	mov (%rdi),%eax
+ 	test %eax,%eax
+-	jnz __cancel
++	jnz __cp_cancel
+ 	mov %rdi,%r11
+ 	mov %rsi,%rax
+ 	mov %rdx,%rdi
+@@ -27,3 +27,5 @@ __cp_begin:
+ 	syscall
+ __cp_end:
+ 	ret
++__cp_cancel:
++	jmp __cancel

toolchain/musl/patches/001-eliminate-protected-visibility-data-in-libc.so-with-.patch

@@ -1,55 +0,0 @@
-From: Rich Felker <[email protected]>
-Date: Tue, 29 Sep 2015 02:44:05 +0000
-Subject: [PATCH] eliminate protected-visibility data in libc.so with vis.h
- preinclude
-
-some newer binutils versions print scary warnings about protected data
-because most gcc versions fail to produce the right address
-references/relocations for such data that might be subject to copy
-relocations. originally vis.h explicitly assigned default visibility
-to all public data symbols to avoid this issue, but commit
-b8dda24fe1caa901a99580f7a52defb95aedb67c removed this treatment for
-stdin/out/err to work around a gcc 3.x bug, and since they don't
-actually need it (because taking their addresses is not valid C).
-
-instead, a check for the gcc 3.x bug is added to the configure check
-for vis.h preinclude support; this feature will simply be disabled
-when using a buggy version of gcc.
----
-
---- a/configure
-+++ b/configure
-@@ -476,10 +476,18 @@ if test "x$visibility" = xauto ; then
- # - the -include option
- # - the attributes/pragmas used in vis.h
- # - linking code that takes the address of protected symbols
-+# - gcc 3.x bug that wrongly claims declarations mismatch
- printf "checking whether global visibility preinclude works... "
--echo 'int (*fp)(void);' > "$tmpc"
--echo 'int foo(void) { }' >> "$tmpc"
--echo 'int bar(void) { fp = foo; return foo(); }' >> "$tmpc"
-+cat > "$tmpc" <<EOF
-+__attribute__((__visibility__("default")))
-+extern struct a *const x;
-+typedef struct a b;
-+extern b *const x;
-+b *const x;
-+int (*fp)(void);
-+int foo(void) { }
-+int bar(void) { fp = foo; return foo(); }
-+EOF
- if $CC $CFLAGS_C99FSE $CPPFLAGS $CFLAGS \
-   -DSHARED -fPIC -I./src/internal -include vis.h \
-   -nostdlib -shared -Wl,-Bsymbolic-functions \
---- a/src/internal/vis.h
-+++ b/src/internal/vis.h
-@@ -12,6 +12,9 @@
-  * exported data symbols. */
- 
- __attribute__((__visibility__("default")))
-+extern struct _IO_FILE *const stdin, *const stdout, *const stderr;
-+
-+__attribute__((__visibility__("default")))
- extern int optind, opterr, optopt, optreset, __optreset, getdate_err, h_errno, daylight, __daylight, signgam, __signgam;
- 
- __attribute__((__visibility__("default")))

toolchain/musl/patches/010-Add-PowerPC-soft-float-support.patch

@@ -11,12 +11,26 @@ Make it possible to run these devices in soft-float mode.
 
 Signed-off-by: Felix Fietkau <[email protected]>
 ---
- create mode 100644 src/fenv/powerpc-sf/fenv.sub
- create mode 100644 src/setjmp/powerpc-sf/longjmp.s
- create mode 100644 src/setjmp/powerpc-sf/longjmp.sub
- create mode 100644 src/setjmp/powerpc-sf/setjmp.s
- create mode 100644 src/setjmp/powerpc-sf/setjmp.sub
+ create mode 100644 src/fenv/powerpc/fenv-sf.c
 
+--- a/arch/powerpc/bits/fenv.h
++++ b/arch/powerpc/bits/fenv.h
+@@ -1,3 +1,7 @@
++#ifdef _SOFT_FLOAT
++#define FE_ALL_EXCEPT 0
++#define FE_TONEAREST  0
++#else
+ #define FE_TONEAREST	0
+ #define FE_TOWARDZERO	1
+ #define FE_UPWARD	2
+@@ -24,6 +28,7 @@
+ 
+ #define FE_ALL_INVALID		0x01f80700
+ #endif
++#endif
+ 
+ typedef unsigned fexcept_t;
+ typedef double fenv_t;
 --- a/arch/powerpc/reloc.h
 +++ b/arch/powerpc/reloc.h
 @@ -1,4 +1,10 @@
@@ -33,7 +47,7 @@ Signed-off-by: Felix Fietkau <[email protected]>
  
 --- a/configure
 +++ b/configure
-@@ -538,6 +538,10 @@ trycppif "_MIPSEL || __MIPSEL || __MIPSE
+@@ -595,6 +595,10 @@ trycppif "_MIPSEL || __MIPSEL || __MIPSE
  trycppif __mips_soft_float "$t" && SUBARCH=${SUBARCH}-sf
  fi
  
@@ -45,31 +59,293 @@ Signed-off-by: Felix Fietkau <[email protected]>
  && SUBARCH=${SUBARCH}el
  
 --- /dev/null
-+++ b/src/fenv/powerpc-sf/fenv.sub
-@@ -0,0 +1 @@
-+../fenv.c
++++ b/src/fenv/powerpc/fenv-sf.c
+@@ -0,0 +1,3 @@
++#ifdef _SOFT_FLOAT
++#include "../fenv.c"
++#endif
 --- /dev/null
-+++ b/src/setjmp/powerpc-sf/longjmp.s
-@@ -0,0 +1,47 @@
++++ b/src/fenv/powerpc/fenv.S
+@@ -0,0 +1,129 @@
++#ifndef _SOFT_FLOAT
++.global feclearexcept
++.type feclearexcept,@function
++feclearexcept:
++	andis. 3,3,0x3e00
++	/* if (r3 & FE_INVALID) r3 |= all_invalid_flags */
++	andis. 0,3,0x2000
++	stwu 1,-16(1)
++	beq- 0,1f
++	oris 3,3,0x01f8
++	ori  3,3,0x0700
++1:
++	/*
++	 * note: fpscr contains various fpu status and control
++	 * flags and we dont check if r3 may alter other flags
++	 * than the exception related ones
++	 * ufpscr &= ~r3
++	 */
++	mffs 0
++	stfd 0,8(1)
++	lwz 9,12(1)
++	andc 9,9,3
++	stw 9,12(1)
++	lfd 0,8(1)
++	mtfsf 255,0
++
++	/* return 0 */
++	li 3,0
++	addi 1,1,16
++	blr
++
++.global feraiseexcept
++.type feraiseexcept,@function
++feraiseexcept:
++	andis. 3,3,0x3e00
++	/* if (r3 & FE_INVALID) r3 |= software_invalid_flag */
++	andis. 0,3,0x2000
++	stwu 1,-16(1)
++	beq- 0,1f
++	ori 3,3,0x0400
++1:
++	/* fpscr |= r3 */
++	mffs 0
++	stfd 0,8(1)
++	lwz 9,12(1)
++	or 9,9,3
++	stw 9,12(1)
++	lfd 0,8(1)
++	mtfsf 255,0
++
++	/* return 0 */
++	li 3,0
++	addi 1,1,16
++	blr
++
++.global fetestexcept
++.type fetestexcept,@function
++fetestexcept:
++	andis. 3,3,0x3e00
++	/* return r3 & fpscr */
++	stwu 1,-16(1)
++	mffs 0
++	stfd 0,8(1)
++	lwz 9,12(1)
++	addi 1,1,16
++	and 3,3,9
++	blr
++
++.global fegetround
++.type fegetround,@function
++fegetround:
++	/* return fpscr & 3 */
++	stwu 1,-16(1)
++	mffs 0
++	stfd 0,8(1)
++	lwz 3,12(1)
++	addi 1,1,16
++	clrlwi 3,3,30
++	blr
++
++.global __fesetround
++.type __fesetround,@function
++__fesetround:
++	/*
++	 * note: invalid input is not checked, r3 < 4 must hold
++	 * fpscr = (fpscr & -4U) | r3
++	 */
++	stwu 1,-16(1)
++	mffs 0
++	stfd 0,8(1)
++	lwz 9,12(1)
++	clrrwi 9,9,2
++	or 9,9,3
++	stw 9,12(1)
++	lfd 0,8(1)
++	mtfsf 255,0
++
++	/* return 0 */
++	li 3,0
++	addi 1,1,16
++	blr
++
++.global fegetenv
++.type fegetenv,@function
++fegetenv:
++	/* *r3 = fpscr */
++	mffs 0
++	stfd 0,0(3)
++	/* return 0 */
++	li 3,0
++	blr
++
++.global fesetenv
++.type fesetenv,@function
++fesetenv:
++	cmpwi 3, -1
++	bne 1f
++	mflr 4
++	bl 2f
++	.zero 8
++2:	mflr 3
++	mtlr 4
++1:	/* fpscr = *r3 */
++	lfd 0,0(3)
++	mtfsf 255,0
++	/* return 0 */
++	li 3,0
++	blr
++#endif
+--- a/src/fenv/powerpc/fenv.s
++++ /dev/null
+@@ -1,123 +0,0 @@
+-.global feclearexcept
+-.type feclearexcept,@function
+-feclearexcept:
+-	andis. 3,3,0x3e00
+-	# if (r3 & FE_INVALID) r3 |= all_invalid_flags
+-	andis. 0,3,0x2000
+-	stwu 1,-16(1)
+-	beq- 0,1f
+-	oris 3,3,0x01f8
+-	ori  3,3,0x0700
+-1:
+-	# note: fpscr contains various fpu status and control
+-	# flags and we dont check if r3 may alter other flags
+-	# than the exception related ones
+-	# fpscr &= ~r3
+-	mffs 0
+-	stfd 0,8(1)
+-	lwz 9,12(1)
+-	andc 9,9,3
+-	stw 9,12(1)
+-	lfd 0,8(1)
+-	mtfsf 255,0
+-
+-	# return 0
+-	li 3,0
+-	addi 1,1,16
+-	blr
+-
+-.global feraiseexcept
+-.type feraiseexcept,@function
+-feraiseexcept:
+-	andis. 3,3,0x3e00
+-	# if (r3 & FE_INVALID) r3 |= software_invalid_flag
+-	andis. 0,3,0x2000
+-	stwu 1,-16(1)
+-	beq- 0,1f
+-	ori 3,3,0x0400
+-1:
+-	# fpscr |= r3
+-	mffs 0
+-	stfd 0,8(1)
+-	lwz 9,12(1)
+-	or 9,9,3
+-	stw 9,12(1)
+-	lfd 0,8(1)
+-	mtfsf 255,0
+-
+-	# return 0
+-	li 3,0
+-	addi 1,1,16
+-	blr
+-
+-.global fetestexcept
+-.type fetestexcept,@function
+-fetestexcept:
+-	andis. 3,3,0x3e00
+-	# return r3 & fpscr
+-	stwu 1,-16(1)
+-	mffs 0
+-	stfd 0,8(1)
+-	lwz 9,12(1)
+-	addi 1,1,16
+-	and 3,3,9
+-	blr
+-
+-.global fegetround
+-.type fegetround,@function
+-fegetround:
+-	# return fpscr & 3
+-	stwu 1,-16(1)
+-	mffs 0
+-	stfd 0,8(1)
+-	lwz 3,12(1)
+-	addi 1,1,16
+-	clrlwi 3,3,30
+-	blr
+-
+-.global __fesetround
+-.type __fesetround,@function
+-__fesetround:
+-	# note: invalid input is not checked, r3 < 4 must hold
+-	# fpscr = (fpscr & -4U) | r3
+-	stwu 1,-16(1)
+-	mffs 0
+-	stfd 0,8(1)
+-	lwz 9,12(1)
+-	clrrwi 9,9,2
+-	or 9,9,3
+-	stw 9,12(1)
+-	lfd 0,8(1)
+-	mtfsf 255,0
+-
+-	# return 0
+-	li 3,0
+-	addi 1,1,16
+-	blr
+-
+-.global fegetenv
+-.type fegetenv,@function
+-fegetenv:
+-	# *r3 = fpscr
+-	mffs 0
+-	stfd 0,0(3)
+-	# return 0
+-	li 3,0
+-	blr
+-
+-.global fesetenv
+-.type fesetenv,@function
+-fesetenv:
+-	cmpwi 3, -1
+-	bne 1f
+-	mflr 4
+-	bl 2f
+-	.zero 8
+-2:	mflr 3
+-	mtlr 4
+-1:	# fpscr = *r3
+-	lfd 0,0(3)
+-	mtfsf 255,0
+-	# return 0
+-	li 3,0
+-	blr
+--- /dev/null
++++ b/src/setjmp/powerpc/longjmp.S
+@@ -0,0 +1,69 @@
 +	.global _longjmp
 +	.global longjmp
 +	.type   _longjmp,@function
 +	.type   longjmp,@function
 +_longjmp:
 +longjmp:
-+# void longjmp(jmp_buf env, int val);
-+# put val into return register and restore the env saved in setjmp
-+# if val(r4) is 0, put 1 there.
-+	# 0) move old return address into r0
++	/*
++	 * void longjmp(jmp_buf env, int val);
++	 * put val into return register and restore the env saved in setjmp
++	 * if val(r4) is 0, put 1 there.
++	 */
++	/* 0) move old return address into r0 */
 +	lwz 0, 0(3)
-+	# 1) put it into link reg
++	/* 1) put it into link reg */
 +	mtlr 0
-+	#2 ) restore stack ptr
++	/* 2 ) restore stack ptr */
 +	lwz 1, 4(3)
-+	#3) restore control reg
++	/* 3) restore control reg */
 +	lwz 0, 8(3)
 +	mtcr 0
-+	#4) restore r14-r31
++	/* 4) restore r14-r31 */
 +	lwz 14, 12(3)
 +	lwz 15, 16(3)
 +	lwz 16, 20(3)
@@ -88,23 +364,107 @@ Signed-off-by: Felix Fietkau <[email protected]>
 +	lwz 29, 72(3)
 +	lwz 30, 76(3)
 +	lwz 31, 80(3)
-+	#5) put val into return reg r3
++#ifndef _SOFT_FLOAT
++	lfd 14,88(3)
++	lfd 15,96(3)
++	lfd 16,104(3)
++	lfd 17,112(3)
++	lfd 18,120(3)
++	lfd 19,128(3)
++	lfd 20,136(3)
++	lfd 21,144(3)
++	lfd 22,152(3)
++	lfd 23,160(3)
++	lfd 24,168(3)
++	lfd 25,176(3)
++	lfd 26,184(3)
++	lfd 27,192(3)
++	lfd 28,200(3)
++	lfd 29,208(3)
++	lfd 30,216(3)
++	lfd 31,224(3)
++#endif
++	/* 5) put val into return reg r3 */
 +	mr 3, 4
 +
-+	#6) check if return value is 0, make it 1 in that case
++	/* 6) check if return value is 0, make it 1 in that case */
 +	cmpwi cr7, 4, 0
 +	bne cr7, 1f
 +	li 3, 1
 +1:
 +	blr
 +
+--- a/src/setjmp/powerpc/longjmp.s
++++ /dev/null
+@@ -1,65 +0,0 @@
+-	.global _longjmp
+-	.global longjmp
+-	.type   _longjmp,@function
+-	.type   longjmp,@function
+-_longjmp:
+-longjmp:
+-# void longjmp(jmp_buf env, int val);
+-# put val into return register and restore the env saved in setjmp
+-# if val(r4) is 0, put 1 there.
+-	# 0) move old return address into r0
+-	lwz 0, 0(3)
+-	# 1) put it into link reg
+-	mtlr 0
+-	#2 ) restore stack ptr
+-	lwz 1, 4(3)
+-	#3) restore control reg
+-	lwz 0, 8(3)
+-	mtcr 0
+-	#4) restore r14-r31
+-	lwz 14, 12(3)
+-	lwz 15, 16(3)
+-	lwz 16, 20(3)
+-	lwz 17, 24(3)
+-	lwz 18, 28(3)
+-	lwz 19, 32(3)
+-	lwz 20, 36(3)
+-	lwz 21, 40(3)
+-	lwz 22, 44(3)
+-	lwz 23, 48(3)
+-	lwz 24, 52(3)
+-	lwz 25, 56(3)
+-	lwz 26, 60(3)
+-	lwz 27, 64(3)
+-	lwz 28, 68(3)
+-	lwz 29, 72(3)
+-	lwz 30, 76(3)
+-	lwz 31, 80(3)
+-	lfd 14,88(3)
+-	lfd 15,96(3)
+-	lfd 16,104(3)
+-	lfd 17,112(3)
+-	lfd 18,120(3)
+-	lfd 19,128(3)
+-	lfd 20,136(3)
+-	lfd 21,144(3)
+-	lfd 22,152(3)
+-	lfd 23,160(3)
+-	lfd 24,168(3)
+-	lfd 25,176(3)
+-	lfd 26,184(3)
+-	lfd 27,192(3)
+-	lfd 28,200(3)
+-	lfd 29,208(3)
+-	lfd 30,216(3)
+-	lfd 31,224(3)
+-	#5) put val into return reg r3
+-	mr 3, 4
+-
+-	#6) check if return value is 0, make it 1 in that case
+-	cmpwi cr7, 4, 0
+-	bne cr7, 1f
+-	li 3, 1
+-1:
+-	blr
+-
 --- /dev/null
-+++ b/src/setjmp/powerpc-sf/longjmp.sub
-@@ -0,0 +1 @@
-+longjmp.s
---- /dev/null
-+++ b/src/setjmp/powerpc-sf/setjmp.s
-@@ -0,0 +1,43 @@
++++ b/src/setjmp/powerpc/setjmp.S
+@@ -0,0 +1,63 @@
 +	.global ___setjmp
 +	.hidden ___setjmp
 +	.global __setjmp
@@ -117,15 +477,15 @@ Signed-off-by: Felix Fietkau <[email protected]>
 +__setjmp:
 +_setjmp:
 +setjmp:
-+	# 0) store IP int 0, then into the jmpbuf pointed to by r3 (first arg)
++	/* 0) store IP int 0, then into the jmpbuf pointed to by r3 (first arg) */
 +	mflr 0
 +	stw 0, 0(3)
-+	# 1) store reg1 (SP)
++	/* 1) store reg1 (SP) */
 +	stw 1, 4(3)
-+	# 2) store cr
++	/* 2) store cr */
 +	mfcr 0
 +	stw 0, 8(3)
-+	# 3) store r14-31
++	/* 3) store r14-31 */
 +	stw 14, 12(3)
 +	stw 15, 16(3)
 +	stw 16, 20(3)
@@ -144,11 +504,91 @@ Signed-off-by: Felix Fietkau <[email protected]>
 +	stw 29, 72(3)
 +	stw 30, 76(3)
 +	stw 31, 80(3)
-+	# 4) set return value to 0
++#ifndef _SOFT_FLOAT
++	stfd 14,88(3)
++	stfd 15,96(3)
++	stfd 16,104(3)
++	stfd 17,112(3)
++	stfd 18,120(3)
++	stfd 19,128(3)
++	stfd 20,136(3)
++	stfd 21,144(3)
++	stfd 22,152(3)
++	stfd 23,160(3)
++	stfd 24,168(3)
++	stfd 25,176(3)
++	stfd 26,184(3)
++	stfd 27,192(3)
++	stfd 28,200(3)
++	stfd 29,208(3)
++	stfd 30,216(3)
++	stfd 31,224(3)
++#endif
++	/* 4) set return value to 0 */
 +	li 3, 0
-+	# 5) return
++	/* 5) return */
 +	blr
---- /dev/null
-+++ b/src/setjmp/powerpc-sf/setjmp.sub
-@@ -0,0 +1 @@
-+setjmp.s
+--- a/src/setjmp/powerpc/setjmp.s
++++ /dev/null
+@@ -1,61 +0,0 @@
+-	.global ___setjmp
+-	.hidden ___setjmp
+-	.global __setjmp
+-	.global _setjmp
+-	.global setjmp
+-	.type   __setjmp,@function
+-	.type   _setjmp,@function
+-	.type   setjmp,@function
+-___setjmp:
+-__setjmp:
+-_setjmp:
+-setjmp:
+-	# 0) store IP int 0, then into the jmpbuf pointed to by r3 (first arg)
+-	mflr 0
+-	stw 0, 0(3)
+-	# 1) store reg1 (SP)
+-	stw 1, 4(3)
+-	# 2) store cr
+-	mfcr 0
+-	stw 0, 8(3)
+-	# 3) store r14-31
+-	stw 14, 12(3)
+-	stw 15, 16(3)
+-	stw 16, 20(3)
+-	stw 17, 24(3)
+-	stw 18, 28(3)
+-	stw 19, 32(3)
+-	stw 20, 36(3)
+-	stw 21, 40(3)
+-	stw 22, 44(3)
+-	stw 23, 48(3)
+-	stw 24, 52(3)
+-	stw 25, 56(3)
+-	stw 26, 60(3)
+-	stw 27, 64(3)
+-	stw 28, 68(3)
+-	stw 29, 72(3)
+-	stw 30, 76(3)
+-	stw 31, 80(3)
+-	stfd 14,88(3)
+-	stfd 15,96(3)
+-	stfd 16,104(3)
+-	stfd 17,112(3)
+-	stfd 18,120(3)
+-	stfd 19,128(3)
+-	stfd 20,136(3)
+-	stfd 21,144(3)
+-	stfd 22,152(3)
+-	stfd 23,160(3)
+-	stfd 24,168(3)
+-	stfd 25,176(3)
+-	stfd 26,184(3)
+-	stfd 27,192(3)
+-	stfd 28,200(3)
+-	stfd 29,208(3)
+-	stfd 30,216(3)
+-	stfd 31,224(3)
+-	# 4) set return value to 0
+-	li 3, 0
+-	# 5) return
+-	blr

toolchain/musl/patches/020-upstream_open_memstream.patch

@@ -1,79 +0,0 @@
-From 7b9f57f207b51132f188f750161953b7baf32154 Mon Sep 17 00:00:00 2001
-From: Rich Felker <[email protected]>
-Date: Thu, 8 Oct 2015 22:03:53 +0000
-Subject: fix open_[w]memstream behavior when no writes take place
-
-the specification for these functions requires that the buffer/size
-exposed to the caller be valid after any successful call to fflush or
-fclose on the stream. the implementation's approach is to update them
-only at flush time, but that misses the case where fflush or fclose is
-called without any writes having taken place, in which case the write
-flushing callback will not be called.
-
-to fix both the observable bug and the desired invariant, setup empty
-buffers at open time and fail the open operation if no memory is
-available.
----
- src/stdio/open_memstream.c  | 11 +++++++++--
- src/stdio/open_wmemstream.c | 11 +++++++++--
- 2 files changed, 18 insertions(+), 4 deletions(-)
-
-diff --git a/src/stdio/open_memstream.c b/src/stdio/open_memstream.c
-index 58504c9..eab024d 100644
---- a/src/stdio/open_memstream.c
-+++ b/src/stdio/open_memstream.c
-@@ -59,14 +59,21 @@ FILE *open_memstream(char **bufp, size_t *sizep)
- {
- 	FILE *f;
- 	struct cookie *c;
-+	char *buf;
-+
- 	if (!(f=malloc(sizeof *f + sizeof *c + BUFSIZ))) return 0;
-+	if (!(buf=malloc(sizeof *buf))) {
-+		free(f);
-+		return 0;
-+	}
- 	memset(f, 0, sizeof *f + sizeof *c);
- 	f->cookie = c = (void *)(f+1);
- 
- 	c->bufp = bufp;
- 	c->sizep = sizep;
--	c->pos = c->len = c->space = 0;
--	c->buf = 0;
-+	c->pos = c->len = c->space = *sizep = 0;
-+	c->buf = *bufp = buf;
-+	*buf = 0;
- 
- 	f->flags = F_NORD;
- 	f->fd = -1;
-diff --git a/src/stdio/open_wmemstream.c b/src/stdio/open_wmemstream.c
-index 7ab2c64..4d90cd9 100644
---- a/src/stdio/open_wmemstream.c
-+++ b/src/stdio/open_wmemstream.c
-@@ -61,14 +61,21 @@ FILE *open_wmemstream(wchar_t **bufp, size_t *sizep)
- {
- 	FILE *f;
- 	struct cookie *c;
-+	wchar_t *buf;
-+
- 	if (!(f=malloc(sizeof *f + sizeof *c))) return 0;
-+	if (!(buf=malloc(sizeof *buf))) {
-+		free(f);
-+		return 0;
-+	}
- 	memset(f, 0, sizeof *f + sizeof *c);
- 	f->cookie = c = (void *)(f+1);
- 
- 	c->bufp = bufp;
- 	c->sizep = sizep;
--	c->pos = c->len = c->space = 0;
--	c->buf = 0;
-+	c->pos = c->len = c->space = *sizep = 0;
-+	c->buf = *bufp = buf;
-+	*buf = 0;
- 
- 	f->flags = F_NORD;
- 	f->fd = -1;
--- 
-cgit v0.11.2
-

toolchain/musl/patches/200-add_libssp_nonshared.patch

@@ -12,30 +12,30 @@ Signed-off-by: Steven Barth <[email protected]>
 
 --- a/Makefile
 +++ b/Makefile
-@@ -48,7 +48,7 @@ CRT_LIBS = lib/crt1.o lib/Scrt1.o lib/rc
+@@ -56,7 +56,7 @@ CRT_LIBS = lib/crt1.o lib/Scrt1.o lib/rc
  STATIC_LIBS = lib/libc.a
  SHARED_LIBS = lib/libc.so
  TOOL_LIBS = lib/musl-gcc.specs
 -ALL_LIBS = $(CRT_LIBS) $(STATIC_LIBS) $(SHARED_LIBS) $(EMPTY_LIBS) $(TOOL_LIBS)
 +ALL_LIBS = $(CRT_LIBS) $(STATIC_LIBS) $(SHARED_LIBS) $(EMPTY_LIBS) $(TOOL_LIBS) lib/libssp_nonshared.a
- ALL_TOOLS = tools/musl-gcc
+ ALL_TOOLS = obj/musl-gcc
  
  WRAPCC_GCC = gcc
-@@ -106,7 +106,8 @@ NOSSP_SRCS = $(wildcard crt/*.c) \
+@@ -117,7 +117,8 @@ NOSSP_SRCS = $(wildcard crt/*.c) \
  	src/env/__libc_start_main.c src/env/__init_tls.c \
  	src/thread/__set_thread_area.c src/env/__stack_chk_fail.c \
  	src/string/memset.c src/string/memcpy.c \
 -	src/ldso/dlstart.c src/ldso/dynlink.c
 +	src/ldso/dlstart.c src/ldso/dynlink.c \
-+	libssp_nonshared/__stack_chk_fail_local.c
- $(NOSSP_SRCS:%.c=%.o) $(NOSSP_SRCS:%.c=%.lo): CFLAGS += $(CFLAGS_NOSSP)
++	src/libssp_nonshared/__stack_chk_fail_local.c
+ $(NOSSP_SRCS:%.c=obj/%.o) $(NOSSP_SRCS:%.c=obj/%.lo): CFLAGS_ALL += $(CFLAGS_NOSSP)
  
- $(CRT_LIBS:lib/%=crt/%): CFLAGS += -DCRT
-@@ -155,6 +156,11 @@ lib/libc.a: $(OBJS)
+ $(CRT_LIBS:lib/%=obj/crt/%): CFLAGS_ALL += -DCRT
+@@ -161,6 +162,11 @@ lib/libc.a: $(OBJS)
  	$(AR) rc $@ $(OBJS)
  	$(RANLIB) $@
  
-+lib/libssp_nonshared.a: libssp_nonshared/__stack_chk_fail_local.o
++lib/libssp_nonshared.a: obj/src/libssp_nonshared/__stack_chk_fail_local.o
 +	rm -f $@
 +	$(AR) rc $@ $<
 +	$(RANLIB) $@
@@ -44,7 +44,7 @@ Signed-off-by: Steven Barth <[email protected]>
  	rm -f $@
  	$(AR) rc $@
 --- /dev/null
-+++ b/libssp_nonshared/__stack_chk_fail_local.c
++++ b/src/libssp_nonshared/__stack_chk_fail_local.c
 @@ -0,0 +1,2 @@
 +#include "atomic.h"
 +void __attribute__((visibility ("hidden"))) __stack_chk_fail_local(void) { a_crash(); }

toolchain/musl/patches/300-relative.patch

@@ -1,6 +1,6 @@
 --- a/Makefile
 +++ b/Makefile
-@@ -195,7 +195,7 @@ $(DESTDIR)$(includedir)/%: include/%
+@@ -210,7 +210,7 @@ $(DESTDIR)$(includedir)/%: $(srcdir)/inc
  	$(INSTALL) -D -m 644 $< $@
  
  $(DESTDIR)$(LDSO_PATHNAME): $(DESTDIR)$(libdir)/libc.so

toolchain/musl/patches/920-getifaddrs_ptp_fix.patch

@@ -1,18 +0,0 @@
---- a/src/network/getifaddrs.c
-+++ b/src/network/getifaddrs.c
-@@ -161,6 +161,15 @@ static int netlink_msg_to_ifaddr(void *p
- 		ifs->ifa.ifa_flags = ifs0->ifa.ifa_flags;
- 		for (rta = NLMSG_RTA(h, sizeof(*ifa)); NLMSG_RTAOK(rta, h); rta = RTA_NEXT(rta)) {
- 			switch (rta->rta_type) {
-+			case IFA_LOCAL:
-+				/* If ifa_addr is set and we get IFA_LOCAL, assume we have
-+				 * a point-to-point network. Move address to correct field.  */
-+				if (ifs->ifa.ifa_addr != NULL) {
-+					ifs->ifu = ifs->addr;
-+					ifs->ifa.ifa_broadaddr = &ifs->ifu.sa;
-+					memset(&ifs->addr, 0, sizeof(ifs->addr));
-+				}
-+				/* fall through */
- 			case IFA_ADDRESS:
- 				copy_addr(&ifs->ifa.ifa_addr, ifa->ifa_family, &ifs->addr, RTA_DATA(rta), RTA_DATALEN(rta), ifa->ifa_index);
- 				break;