main/libc0.9.32: use ucontext upstream git master

it includes the definitions in the ucontext.h file.

We also need set ASFLAGS to be re-entrant.

7 files changed, 2587 insertions, 1216 deletions

diff --git a/main/libc0.9.32/0001-libc-add-get-set-swap-make-context-user-context-mani.patch b/main/libc0.9.32/0001-libc-add-get-set-swap-make-context-user-context-mani.patch
new file mode 100644
index 0000000000..98bb707b01
--- /dev/null
+++ b/main/libc0.9.32/0001-libc-add-get-set-swap-make-context-user-context-mani.patch
@@ -0,0 +1,2550 @@
+From a8dc90eaaa5e6474beac828558d969b1aafee4af Mon Sep 17 00:00:00 2001
+From: Florian Fainelli <florian@openwrt.org>
+Date: Wed, 9 Jan 2013 16:17:21 +0100
+Subject: [PATCH] libc: add {get,set,swap,make}context user context
+ manipulation functions
+
+Add the obsolescent SUSv3 family of user context manipulating functions
+for arm, i386, mips, x86_64.
+
+Signed-off-by: Timon ter Braak <timonterbraak@gmail.com>
+Signed-off-by: Florian Fainelli <florian@openwrt.org>
+Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>
+Signed-off-by: Natanael Copa <ncopa@alpinelinux.org>
+Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>
+---
+ Rules.mak                                          |   2 +
+ extra/Configs/Config.arm                           |   1 +
+ extra/Configs/Config.i386                          |   1 +
+ extra/Configs/Config.in                            |  16 ++
+ extra/Configs/Config.mips                          |   1 +
+ extra/Configs/Config.x86_64                        |   1 +
+ include/ucontext.h                                 |  32 +++-
+ libc/.gitignore                                    |   1 +
+ libc/sysdeps/linux/Makefile.commonarch             |  20 +-
+ libc/sysdeps/linux/arm/Makefile.arch               |   5 +
+ libc/sysdeps/linux/arm/getcontext.S                |  80 ++++++++
+ libc/sysdeps/linux/arm/makecontext.c               |  73 +++++++
+ libc/sysdeps/linux/arm/setcontext.S                |  76 ++++++++
+ libc/sysdeps/linux/arm/swapcontext.S               |  63 ++++++
+ libc/sysdeps/linux/arm/ucontext_i.sym              |  30 +++
+ libc/sysdeps/linux/i386/Makefile.arch              |   4 +
+ libc/sysdeps/linux/i386/getcontext.S               |  84 ++++++++
+ libc/sysdeps/linux/i386/makecontext.S              | 123 ++++++++++++
+ libc/sysdeps/linux/i386/setcontext.S               |  96 ++++++++++
+ libc/sysdeps/linux/i386/swapcontext.S              | 110 +++++++++++
+ libc/sysdeps/linux/i386/ucontext_i.sym             |  30 +++
+ libc/sysdeps/linux/mips/Makefile.arch              |   4 +
+ libc/sysdeps/linux/mips/getcontext.S               | 148 +++++++++++++++
+ libc/sysdeps/linux/mips/kernel_rt_sigframe.h       |  10 +
+ libc/sysdeps/linux/mips/makecontext.S              | 188 ++++++++++++++++++
+ libc/sysdeps/linux/mips/setcontext.S               | 191 +++++++++++++++++++
+ libc/sysdeps/linux/mips/swapcontext.S              | 211 +++++++++++++++++++++
+ libc/sysdeps/linux/mips/ucontext_i.sym             |  52 +++++
+ libc/sysdeps/linux/x86_64/Makefile.arch            |   5 +
+ libc/sysdeps/linux/x86_64/__start_context.S        |  49 +++++
+ libc/sysdeps/linux/x86_64/getcontext.S             |  88 +++++++++
+ libc/sysdeps/linux/x86_64/makecontext.c            | 121 ++++++++++++
+ libc/sysdeps/linux/x86_64/setcontext.S             | 103 ++++++++++
+ libc/sysdeps/linux/x86_64/swapcontext.S            | 121 ++++++++++++
+ libc/sysdeps/linux/x86_64/ucontext_i.sym           |  37 ++++
+ libpthread/nptl/sysdeps/Makefile.commonarch        |   3 +-
+ .../sysdeps/unix/sysv/linux/Makefile.commonarch    |   2 -
+ 37 files changed, 2174 insertions(+), 8 deletions(-)
+ create mode 100644 libc/.gitignore
+ create mode 100644 libc/sysdeps/linux/arm/getcontext.S
+ create mode 100644 libc/sysdeps/linux/arm/makecontext.c
+ create mode 100644 libc/sysdeps/linux/arm/setcontext.S
+ create mode 100644 libc/sysdeps/linux/arm/swapcontext.S
+ create mode 100644 libc/sysdeps/linux/arm/ucontext_i.sym
+ create mode 100644 libc/sysdeps/linux/i386/getcontext.S
+ create mode 100644 libc/sysdeps/linux/i386/makecontext.S
+ create mode 100644 libc/sysdeps/linux/i386/setcontext.S
+ create mode 100644 libc/sysdeps/linux/i386/swapcontext.S
+ create mode 100644 libc/sysdeps/linux/i386/ucontext_i.sym
+ create mode 100644 libc/sysdeps/linux/mips/getcontext.S
+ create mode 100644 libc/sysdeps/linux/mips/kernel_rt_sigframe.h
+ create mode 100644 libc/sysdeps/linux/mips/makecontext.S
+ create mode 100644 libc/sysdeps/linux/mips/setcontext.S
+ create mode 100644 libc/sysdeps/linux/mips/swapcontext.S
+ create mode 100644 libc/sysdeps/linux/mips/ucontext_i.sym
+ create mode 100644 libc/sysdeps/linux/x86_64/__start_context.S
+ create mode 100644 libc/sysdeps/linux/x86_64/getcontext.S
+ create mode 100644 libc/sysdeps/linux/x86_64/makecontext.c
+ create mode 100644 libc/sysdeps/linux/x86_64/setcontext.S
+ create mode 100644 libc/sysdeps/linux/x86_64/swapcontext.S
+ create mode 100644 libc/sysdeps/linux/x86_64/ucontext_i.sym
+
+diff --git a/Rules.mak b/Rules.mak
+index 96871e1..8943fbf 100644
+--- a/Rules.mak
++++ b/Rules.mak
+@@ -813,3 +813,5 @@ SHARED_END_FILES:=$(LIBGCC_DIR)crtendS.o $(top_builddir)lib/crtn.o
+ endif
+ 
+ LOCAL_INSTALL_PATH := install_dir
++
++PTHREAD_GENERATE_MANGLE ?= -n "s/^.*@@@name@@@\([^@]*\)@@@value@@@[^0-9Xxa-fA-F-]*\([0-9Xxa-fA-F-][0-9Xxa-fA-F-]*\).*@@@end@@@.*\$$/\#define \1 \2/p"
+diff --git a/extra/Configs/Config.arm b/extra/Configs/Config.arm
+index 0bb2971..dc53643 100644
+--- a/extra/Configs/Config.arm
++++ b/extra/Configs/Config.arm
+@@ -11,6 +11,7 @@ config FORCE_OPTIONS_FOR_ARCH
+ 	bool
+ 	default y
+ 	select ARCH_ANY_ENDIAN
++	select ARCH_HAS_UCONTEXT
+ 
+ config CONFIG_ARM_EABI
+ 	bool "Build for EABI"
+diff --git a/extra/Configs/Config.i386 b/extra/Configs/Config.i386
+index 288aa5e..92cee3b 100644
+--- a/extra/Configs/Config.i386
++++ b/extra/Configs/Config.i386
+@@ -12,6 +12,7 @@ config FORCE_OPTIONS_FOR_ARCH
+ 	default y
+ 	select ARCH_LITTLE_ENDIAN
+ 	select ARCH_HAS_MMU
++	select ARCH_HAS_UCONTEXT
+ 
+ choice
+ 	prompt "Target x86 Processor Family"
+diff --git a/extra/Configs/Config.in b/extra/Configs/Config.in
+index 4bb6812..62bcd9b 100644
+--- a/extra/Configs/Config.in
++++ b/extra/Configs/Config.in
+@@ -261,6 +261,9 @@ config ARCH_HAS_NO_LDSO
+ 	bool
+ 	select ARCH_HAS_NO_SHARED
+ 
++config ARCH_HAS_UCONTEXT
++	bool
++
+ config HAVE_SHARED
+ 	bool "Enable shared libraries"
+ 	depends on !ARCH_HAS_NO_SHARED
+@@ -678,6 +681,19 @@ config UCLIBC_SUSV3_LEGACY
+ 
+ 	  WARNING! ABI incompatibility.
+ 
++config UCLIBC_HAS_CONTEXT_FUNCS
++	bool "Use obsolescent context control functions"
++	depends on UCLIBC_SUSV3_LEGACY && ARCH_HAS_UCONTEXT
++	help
++	  Add into library the SuSv3 obsolescent functions used for context
++	  control. The setcontext family allows the implementation in C of
++	  advanced control flow patterns such as iterators, fibers, and
++	  coroutines. They may be viewed as an advanced version of
++	  setjmp/longjmp; whereas the latter allows only a single non-local jump
++	  up the stack, setcontext allows the creation of multiple cooperative
++	  threads of control, each with its own stack.
++	  These functions are: setcontext, getcontext, makecontext, swapcontext.
++
+ config UCLIBC_SUSV3_LEGACY_MACROS
+ 	bool "Enable SuSv3 LEGACY macros"
+ 	help
+diff --git a/extra/Configs/Config.mips b/extra/Configs/Config.mips
+index 063b07c..48e0b64 100644
+--- a/extra/Configs/Config.mips
++++ b/extra/Configs/Config.mips
+@@ -11,6 +11,7 @@ config FORCE_OPTIONS_FOR_ARCH
+ 	bool
+ 	default y
+ 	select ARCH_ANY_ENDIAN
++	select ARCH_HAS_UCONTEXT
+ 
+ choice
+ 	prompt "Target ABI"
+diff --git a/extra/Configs/Config.x86_64 b/extra/Configs/Config.x86_64
+index 1b28088..4c8c3a9 100644
+--- a/extra/Configs/Config.x86_64
++++ b/extra/Configs/Config.x86_64
+@@ -12,3 +12,4 @@ config FORCE_OPTIONS_FOR_ARCH
+ 	default y
+ 	select ARCH_LITTLE_ENDIAN
+ 	select ARCH_HAS_MMU
++	select ARCH_HAS_UCONTEXT
+diff --git a/include/ucontext.h b/include/ucontext.h
+index 14a1270..f11db77 100644
+--- a/include/ucontext.h
++++ b/include/ucontext.h
+@@ -15,17 +15,43 @@
+    License along with the GNU C Library; if not, see
+    <http://www.gnu.org/licenses/>.  */
+ 
++/* The System V ABI user-level context switching support functions
++   are marked obsolescent by SuSv3.  */
++
+ #ifndef _UCONTEXT_H
+ #define _UCONTEXT_H	1
+ 
+ #include <features.h>
+ 
++#ifdef __UCLIBC_HAS_CONTEXT_FUNCS__
++
+ /* Get machine dependent definition of data structures.  */
+ #include <sys/ucontext.h>
+ 
+-/* The System V ABI user-level context switching support functions
+- * are marked obsolescent by SuSv3, and are not implemented by
+- * uClibc.  This header is therefore empty.  */
++__BEGIN_DECLS
++
++/* Get user context and store it in variable pointed to by UCP.  */
++extern int getcontext (ucontext_t *__ucp) __THROW;
++
++/* Set user context from information of variable pointed to by UCP.  */
++extern int setcontext (const ucontext_t *__ucp) __THROW;
++
++/* Save current context in context variable pointed to by OUCP and set
++   context from variable pointed to by UCP.  */
++extern int swapcontext (ucontext_t *__restrict __oucp,
++			const ucontext_t *__restrict __ucp) __THROW;
++
++/* Manipulate user context UCP to continue with calling functions FUNC
++   and the ARGC-1 parameters following ARGC when the context is used
++   the next time in `setcontext' or `swapcontext'.
++
++   We cannot say anything about the parameters FUNC takes; `void'
++   is as good as any other choice.  */
++extern void makecontext (ucontext_t *__ucp, void (*__func) (void),
++			 int __argc, ...) __THROW;
++
++__END_DECLS
+ 
++#endif
+ 
+ #endif /* ucontext.h */
+diff --git a/libc/.gitignore b/libc/.gitignore
+new file mode 100644
+index 0000000..f4c0305
+--- /dev/null
++++ b/libc/.gitignore
+@@ -0,0 +1 @@
++ucontext_i.[chs]
+diff --git a/libc/sysdeps/linux/Makefile.commonarch b/libc/sysdeps/linux/Makefile.commonarch
+index c1bc5df..ac89e72 100644
+--- a/libc/sysdeps/linux/Makefile.commonarch
++++ b/libc/sysdeps/linux/Makefile.commonarch
+@@ -37,5 +37,23 @@ headers-y += $(ARCH_HEADERS_OUT)
+ headers_clean-y += HEADERCLEAN_$(subst $(top_builddir),,$(ARCH_OUT))
+ HEADERCLEAN_$(subst $(top_builddir),,$(ARCH_OUT)):
+ 	$(do_rm) $(ARCH_HEADERS_OUT)
+-
+ endif
++
++CFLAGS-ucontext_i.c = -S
++
++$(ARCH_OUT)/ucontext_i.c: $(ARCH_DIR)/ucontext_i.sym
++	$(do_awk) $(top_srcdir)extra/scripts/gen-as-const.awk $< > $@
++
++$(ARCH_OUT)/ucontext_i.s: $(ARCH_OUT)/ucontext_i.c
++	$(compile.c)
++
++$(ARCH_OUT)/ucontext_i.h: $(ARCH_OUT)/ucontext_i.s
++	$(do_sed) $(PTHREAD_GENERATE_MANGLE) $< > $@
++
++pregen-headers-$(UCLIBC_HAS_CONTEXT_FUNCS) += $(ARCH_OUT)/ucontext_i.h
++
++headers_clean-$(UCLIBC_HAS_CONTEXT_FUNCS) += \
++	HEADERCLEAN_$(subst $(top_builddir),,$(ARCH_OUT)/ucontext_i)
++
++HEADERCLEAN_$(subst $(top_builddir),,$(ARCH_OUT)/ucontext_i):
++	$(do_rm) $(addprefix $(ARCH_OUT)/ucontext_i., c h s)
+diff --git a/libc/sysdeps/linux/arm/Makefile.arch b/libc/sysdeps/linux/arm/Makefile.arch
+index 5fc3e54..36d988b 100644
+--- a/libc/sysdeps/linux/arm/Makefile.arch
++++ b/libc/sysdeps/linux/arm/Makefile.arch
+@@ -43,3 +43,8 @@ libc-static-y += $(ARCH_OUT)/aeabi_lcsts.o $(ARCH_OUT)/aeabi_math.o \
+ libc-nonshared-y += $(ARCH_OUT)/aeabi_lcsts.os $(ARCH_OUT)/aeabi_math.os \
+ 	$(ARCH_OUT)/aeabi_sighandlers.os $(ARCH_OUT)/aeabi_unwind_cpp_pr1.o
+ endif
++
++ifeq ($(UCLIBC_HAS_CONTEXT_FUNCS),y)
++CSRC += makecontext.c
++SSRC += getcontext.S setcontext.S swapcontext.S
++endif
+diff --git a/libc/sysdeps/linux/arm/getcontext.S b/libc/sysdeps/linux/arm/getcontext.S
+new file mode 100644
+index 0000000..a987c52
+--- /dev/null
++++ b/libc/sysdeps/linux/arm/getcontext.S
+@@ -0,0 +1,80 @@
++/* Copyright (C) 2012 Free Software Foundation, Inc.
++   This file is part of the GNU C Library.
++
++   The GNU C Library is free software; you can redistribute it and/or
++   modify it under the terms of the GNU Lesser General Public
++   License as published by the Free Software Foundation; either
++   version 2.1 of the License, or (at your option) any later version.
++
++   The GNU C Library is distributed in the hope that it will be useful,
++   but WITHOUT ANY WARRANTY; without even the implied warranty of
++   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
++   Lesser General Public License for more details.
++
++   You should have received a copy of the GNU Lesser General Public
++   License along with the GNU C Library; if not, see
++   <http://www.gnu.org/licenses/>.  */
++
++#include <sysdep.h>
++
++#include "ucontext_i.h"
++
++	.syntax unified
++	.text
++
++/* int getcontext (ucontext_t *ucp) */
++
++ENTRY(__getcontext)
++	/* No need to save r0-r3, d0-d7, or d16-d31.  */
++	add	r1, r0, #MCONTEXT_ARM_R4
++	stmia   r1, {r4-r11}
++
++	/* Save R13 separately as Thumb can't STM it.  */
++	str     r13, [r0, #MCONTEXT_ARM_SP]
++	str     r14, [r0, #MCONTEXT_ARM_LR]
++	/* Return to LR */
++	str     r14, [r0, #MCONTEXT_ARM_PC]
++	/* Return zero */
++	mov     r2, #0
++	str     r2, [r0, #MCONTEXT_ARM_R0]
++
++	/* Save ucontext_t * across the next call.  */
++	mov	r4, r0
++
++	/* __sigprocmask(SIG_BLOCK, NULL, &(ucontext->uc_sigmask)) */
++	mov     r0, #SIG_BLOCK
++	mov     r1, #0
++	add     r2, r4, #UCONTEXT_SIGMASK
++	bl      PLTJMP(sigprocmask)
++
++#if defined __UCLIBC_HAS_FLOATS__ && ! defined __UCLIBC_HAS_SOFT_FLOAT__
++# ifdef __VFP_FP__
++	/* Store the VFP registers.  */
++	/* Following instruction is fstmiax ip!, {d8-d15}.  */
++	stc     p11, cr8, [r0], #64
++	/* Store the floating-point status register.  */
++	/* Following instruction is fmrx r2, fpscr.  */
++	mrc     p10, 7, r1, cr1, cr0, 0
++	str     r1, [r0], #4
++# endif
++#endif
++#ifdef __IWMMXT__
++	/* Save the call-preserved iWMMXt registers.  */
++	/* Following instructions are wstrd wr10, [r0], #8 (etc.)  */
++	stcl    p1, cr10, [r0], #8
++	stcl    p1, cr11, [r0], #8
++	stcl    p1, cr12, [r0], #8
++	stcl    p1, cr13, [r0], #8
++	stcl    p1, cr14, [r0], #8
++	stcl    p1, cr15, [r0], #8
++#endif
++
++	/* Restore the clobbered R4 and LR.  */
++	ldr	r14, [r4, #MCONTEXT_ARM_LR]
++	ldr	r4, [r4, #MCONTEXT_ARM_R4]
++
++	mov	r0, #0
++	DO_RET(r14)
++
++END(__getcontext)
++weak_alias(__getcontext, getcontext)
+diff --git a/libc/sysdeps/linux/arm/makecontext.c b/libc/sysdeps/linux/arm/makecontext.c
+new file mode 100644
+index 0000000..d6ae6f0
+--- /dev/null
++++ b/libc/sysdeps/linux/arm/makecontext.c
+@@ -0,0 +1,73 @@
++/* Copyright (C) 2012 Free Software Foundation, Inc.
++   This file is part of the GNU C Library.
++
++   The GNU C Library is free software; you can redistribute it and/or
++   modify it under the terms of the GNU Lesser General Public
++   License as published by the Free Software Foundation; either
++   version 2.1 of the License, or (at your option) any later version.
++
++   The GNU C Library is distributed in the hope that it will be useful,
++   but WITHOUT ANY WARRANTY; without even the implied warranty of
++   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
++   Lesser General Public License for more details.
++
++   You should have received a copy of the GNU Lesser General Public
++   License along with the GNU C Library; if not, see
++   <http://www.gnu.org/licenses/>.  */
++
++#include <stdarg.h>
++#include <ucontext.h>
++
++/* Number of arguments that go in registers.  */
++#define NREG_ARGS  4
++
++/* Take a context previously prepared via getcontext() and set to
++   call func() with the given int only args.  */
++void
++__makecontext (ucontext_t *ucp, void (*func) (void), int argc, ...)
++{
++  extern void __startcontext (void);
++  unsigned long *funcstack;
++  va_list vl;
++  unsigned long *regptr;
++  unsigned int reg;
++  int misaligned;
++
++  /* Start at the top of stack.  */
++  funcstack = (unsigned long *) (ucp->uc_stack.ss_sp + ucp->uc_stack.ss_size);
++
++  /* Ensure the stack stays eight byte aligned.  */
++  misaligned = ((unsigned long) funcstack & 4) != 0;
++
++  if ((argc > NREG_ARGS) && (argc & 1) != 0)
++    misaligned = !misaligned;
++
++  if (misaligned)
++    funcstack -= 1;
++
++  va_start (vl, argc);
++
++  /* Reserve space for the on-stack arguments.  */
++  if (argc > NREG_ARGS)
++    funcstack -= (argc - NREG_ARGS);
++
++  ucp->uc_mcontext.arm_sp = (unsigned long) funcstack;
++  ucp->uc_mcontext.arm_pc = (unsigned long) func;
++
++  /* Exit to startcontext() with the next context in R4 */
++  ucp->uc_mcontext.arm_r4 = (unsigned long) ucp->uc_link;
++  ucp->uc_mcontext.arm_lr = (unsigned long) __startcontext;
++
++  /* The first four arguments go into registers.  */
++  regptr = &(ucp->uc_mcontext.arm_r0);
++
++  for (reg = 0; (reg < argc) && (reg < NREG_ARGS); reg++)
++    *regptr++ = va_arg (vl, unsigned long);
++
++  /* And the remainder on the stack.  */
++  for (; reg < argc; reg++)
++    *funcstack++ = va_arg (vl, unsigned long);
++
++  va_end (vl);
++}
++weak_alias (__makecontext, makecontext)
+diff --git a/libc/sysdeps/linux/arm/setcontext.S b/libc/sysdeps/linux/arm/setcontext.S
+new file mode 100644
+index 0000000..a5c33a0
+--- /dev/null
++++ b/libc/sysdeps/linux/arm/setcontext.S
+@@ -0,0 +1,76 @@
++/* Copyright (C) 2012 Free Software Foundation, Inc.
++   This file is part of the GNU C Library.
++
++   The GNU C Library is free software; you can redistribute it and/or
++   modify it under the terms of the GNU Lesser General Public
++   License as published by the Free Software Foundation; either
++   version 2.1 of the License, or (at your option) any later version.
++
++   The GNU C Library is distributed in the hope that it will be useful,
++   but WITHOUT ANY WARRANTY; without even the implied warranty of
++   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
++   Lesser General Public License for more details.
++
++   You should have received a copy of the GNU Lesser General Public
++   License along with the GNU C Library; if not, see
++   <http://www.gnu.org/licenses/>.  */
++
++#include <sysdep.h>
++
++#include "ucontext_i.h"
++
++	.syntax unified
++	.text
++
++/* int setcontext (const ucontext_t *ucp) */
++
++ENTRY(__setcontext)
++	mov	r4, r0
++
++#if defined __UCLIBC_HAS_FLOATS__ && ! defined __UCLIBC_HAS_SOFT_FLOAT__
++# ifdef __VFP_FP__
++	/* Following instruction is vldmia r0!, {d8-d15}.  */
++	ldc     p11, cr8, [r0], #64
++	/* Restore the floating-point status register.  */
++	ldr     r1, [r0], #4
++	/* Following instruction is fmxr fpscr, r1.  */
++	mcr     p10, 7, r1, cr1, cr0, 0
++# endif
++#endif
++
++#ifdef __IWMMXT__
++	/* Restore the call-preserved iWMMXt registers.  */
++	/* Following instructions are wldrd wr10, [r0], #8 (etc.)  */
++	ldcl    p1, cr10, [r0], #8
++	ldcl    p1, cr11, [r0], #8
++	ldcl    p1, cr12, [r0], #8
++	ldcl    p1, cr13, [r0], #8
++	ldcl    p1, cr14, [r0], #8
++	ldcl    p1, cr15, [r0], #8
++#endif
++
++	/* Now bring back the signal status.  */
++	mov	r0, #SIG_SETMASK
++	add	r1, r4, #UCONTEXT_SIGMASK
++	mov	r2, #0
++	bl	PLTJMP(sigprocmask)
++
++        /* Loading r0-r3 makes makecontext easier.  */
++        add     r14, r4, #MCONTEXT_ARM_R0
++        ldmia   r14, {r0-r11}
++        ldr     r13, [r14, #(MCONTEXT_ARM_SP - MCONTEXT_ARM_R0)]
++        add     r14, r14, #(MCONTEXT_ARM_LR - MCONTEXT_ARM_R0)
++        ldmia   r14, {r14, pc}
++
++END(setcontext)
++weak_alias(__setcontext, setcontext)
++
++	/* Called when a makecontext() context returns.  Start the
++	   context in R4 or fall through to exit().  */
++ENTRY(__startcontext)
++        movs    r0, r4
++        bne     PLTJMP(__setcontext)
++
++        @ New context was 0 - exit
++        b       PLTJMP(_exit)
++END(__startcontext)
+diff --git a/libc/sysdeps/linux/arm/swapcontext.S b/libc/sysdeps/linux/arm/swapcontext.S
+new file mode 100644
+index 0000000..ba6e31c
+--- /dev/null
++++ b/libc/sysdeps/linux/arm/swapcontext.S
+@@ -0,0 +1,63 @@
++/* Copyright (C) 2012 Free Software Foundation, Inc.
++   This file is part of the GNU C Library.
++
++   The GNU C Library is free software; you can redistribute it and/or
++   modify it under the terms of the GNU Lesser General Public
++   License as published by the Free Software Foundation; either
++   version 2.1 of the License, or (at your option) any later version.
++
++   The GNU C Library is distributed in the hope that it will be useful,
++   but WITHOUT ANY WARRANTY; without even the implied warranty of
++   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
++   Lesser General Public License for more details.
++
++   You should have received a copy of the GNU Lesser General Public
++   License along with the GNU C Library; if not, see
++   <http://www.gnu.org/licenses/>.  */
++
++#include <sysdep.h>
++
++#include "ucontext_i.h"
++
++	.syntax unified
++	.text
++
++/* int swapcontext (ucontext_t *oucp, const ucontext_t *ucp) */
++
++ENTRY(swapcontext)
++
++	/* Have getcontext() do most of the work then fix up
++	   LR afterwards.  Save R3 to keep the stack aligned.  */
++	push	{r0,r1,r3,r14}
++	cfi_adjust_cfa_offset (16)
++	cfi_rel_offset (r0,0)
++	cfi_rel_offset (r1,4)
++	cfi_rel_offset (r3,8)
++	cfi_rel_offset (r14,12)
++
++	bl	__getcontext
++	mov	r4, r0
++
++	pop	{r0,r1,r3,r14}
++	cfi_adjust_cfa_offset (-16)
++	cfi_restore (r0)
++	cfi_restore (r1)
++	cfi_restore (r3)
++	cfi_restore (r14)
++
++	/* Exit if getcontext() failed.  */
++	cmp 	r4, #0
++	itt	ne
++	movne	r0, r4
++	RETINSTR(ne, r14)
++
++	/* Fix up LR and the PC.  */
++	str	r13,[r0, #MCONTEXT_ARM_SP]
++	str	r14,[r0, #MCONTEXT_ARM_LR]
++	str	r14,[r0, #MCONTEXT_ARM_PC]
++
++	/* And swap using swapcontext().  */
++	mov	r0, r1
++	b	__setcontext
++
++END(swapcontext)
+diff --git a/libc/sysdeps/linux/arm/ucontext_i.sym b/libc/sysdeps/linux/arm/ucontext_i.sym
+new file mode 100644
+index 0000000..9650322
+--- /dev/null
++++ b/libc/sysdeps/linux/arm/ucontext_i.sym
+@@ -0,0 +1,30 @@
++#include <inttypes.h>
++#include <signal.h>
++#include <stddef.h>
++#include <sys/ucontext.h>
++
++SIG_BLOCK
++SIG_SETMASK
++
++-- Offsets of the fields in the ucontext_t structure.
++#define ucontext(member)	offsetof (ucontext_t, member)
++#define mcontext(member)	ucontext (uc_mcontext.member)
++
++UCONTEXT_FLAGS			ucontext (uc_flags)
++UCONTEXT_LINK			ucontext (uc_link)
++UCONTEXT_STACK			ucontext (uc_stack)
++UCONTEXT_MCONTEXT		ucontext (uc_mcontext)
++UCONTEXT_SIGMASK		ucontext (uc_sigmask)
++
++UCONTEXT_REGSPACE		ucontext (uc_regspace)
++
++MCONTEXT_TRAP_NO		mcontext (trap_no)
++MCONTEXT_ERROR_CODE		mcontext (error_code)
++MCONTEXT_OLDMASK		mcontext (oldmask)
++MCONTEXT_ARM_R0		mcontext (arm_r0)
++MCONTEXT_ARM_R4		mcontext (arm_r4)
++MCONTEXT_ARM_SP		mcontext (arm_sp)
++MCONTEXT_ARM_LR		mcontext (arm_lr)
++MCONTEXT_ARM_PC		mcontext (arm_pc)
++MCONTEXT_ARM_CPSR		mcontext (arm_cpsr)
++MCONTEXT_FAULT_ADDRESS		mcontext (fault_address)
+diff --git a/libc/sysdeps/linux/i386/Makefile.arch b/libc/sysdeps/linux/i386/Makefile.arch
+index a3bf32f..e7fd28e 100644
+--- a/libc/sysdeps/linux/i386/Makefile.arch
++++ b/libc/sysdeps/linux/i386/Makefile.arch
+@@ -18,3 +18,7 @@ endif
+ ifneq ($(UCLIBC_HAS_THREADS_NATIVE),y)
+ SSRC += vfork.S clone.S
+ endif
++
++ifeq ($(UCLIBC_HAS_CONTEXT_FUNCS),y)
++SSRC += makecontext.S setcontext.S getcontext.S swapcontext.S
++endif
+diff --git a/libc/sysdeps/linux/i386/getcontext.S b/libc/sysdeps/linux/i386/getcontext.S
+new file mode 100644
+index 0000000..3221b59
+--- /dev/null
++++ b/libc/sysdeps/linux/i386/getcontext.S
+@@ -0,0 +1,84 @@
++/* Save current context.
++   Copyright (C) 2001-2012 Free Software Foundation, Inc.
++   This file is part of the GNU C Library.
++   Contributed by Ulrich Drepper <drepper@redhat.com>, 2001.
++
++   The GNU C Library is free software; you can redistribute it and/or
++   modify it under the terms of the GNU Lesser General Public
++   License as published by the Free Software Foundation; either
++   version 2.1 of the License, or (at your option) any later version.
++
++   The GNU C Library is distributed in the hope that it will be useful,
++   but WITHOUT ANY WARRANTY; without even the implied warranty of
++   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
++   Lesser General Public License for more details.
++
++   You should have received a copy of the GNU Lesser General Public
++   License along with the GNU C Library; if not, see
++   <http://www.gnu.org/licenses/>.  */
++
++#include <sysdep.h>
++
++#include "ucontext_i.h"
++
++
++ENTRY(__getcontext)
++	/* Load address of the context data structure.  */
++	movl	4(%esp), %eax
++
++	/* Return value of getcontext.  EAX is the only register whose
++	   value is not preserved.  */
++	movl	$0, oEAX(%eax)
++
++	/* Save the 32-bit register values and the return address.  */
++	movl	%ecx, oECX(%eax)
++	movl	%edx, oEDX(%eax)
++	movl	%edi, oEDI(%eax)
++	movl	%esi, oESI(%eax)
++	movl	%ebp, oEBP(%eax)
++	movl	(%esp), %ecx
++	movl	%ecx, oEIP(%eax)
++	leal	4(%esp), %ecx		/* Exclude the return address.  */
++	movl	%ecx, oESP(%eax)
++	movl	%ebx, oEBX(%eax)
++
++	/* Save the FS segment register.  We don't touch the GS register
++	   since it is used for threads.  */
++	xorl	%edx, %edx
++	movw	%fs, %dx
++	movl	%edx, oFS(%eax)
++
++	/* We have separate floating-point register content memory on the
++	   stack.  We use the __fpregs_mem block in the context.  Set the
++	   links up correctly.  */
++	leal	oFPREGSMEM(%eax), %ecx
++	movl	%ecx, oFPREGS(%eax)
++	/* Save the floating-point context.  */
++	fnstenv	(%ecx)
++	/* And load it right back since the processor changes the mask.
++	   Intel thought this opcode to be used in interrupt handlers which
++	   would block all exceptions.  */
++	fldenv	(%ecx)
++
++	/* Save the current signal mask.  */
++	pushl	%ebx
++	cfi_adjust_cfa_offset (4)
++	cfi_rel_offset (ebx, 0)
++	leal	oSIGMASK(%eax), %edx
++	xorl	%ecx, %ecx
++	movl	$SIG_BLOCK, %ebx
++	movl	$__NR_sigprocmask, %eax
++	ENTER_KERNEL
++	popl	%ebx
++	cfi_adjust_cfa_offset (-4)
++	cfi_restore (ebx)
++	cmpl	$-4095, %eax		/* Check %eax for error.  */
++	jae	SYSCALL_ERROR_LABEL	/* Jump to error handler if error.  */
++
++	/* All done, return 0 for success.  */
++	xorl	%eax, %eax
++L(pseudo_end):
++	ret
++PSEUDO_END(__getcontext)
++
++weak_alias (__getcontext, getcontext)
+diff --git a/libc/sysdeps/linux/i386/makecontext.S b/libc/sysdeps/linux/i386/makecontext.S
+new file mode 100644
+index 0000000..d12799d
+--- /dev/null
++++ b/libc/sysdeps/linux/i386/makecontext.S
+@@ -0,0 +1,123 @@
++/* Create new context.
++   Copyright (C) 2001,2002,2005,2007,2008,2009 Free Software Foundation, Inc.
++   This file is part of the GNU C Library.
++   Contributed by Ulrich Drepper <drepper@redhat.com>, 2001.
++
++   The GNU C Library is free software; you can redistribute it and/or
++   modify it under the terms of the GNU Lesser General Public
++   License as published by the Free Software Foundation; either
++   version 2.1 of the License, or (at your option) any later version.
++
++   The GNU C Library is distributed in the hope that it will be useful,
++   but WITHOUT ANY WARRANTY; without even the implied warranty of
++   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
++   Lesser General Public License for more details.
++
++   You should have received a copy of the GNU Lesser General Public
++   License along with the GNU C Library; if not, see
++   <http://www.gnu.org/licenses/>.  */
++
++#include <sysdep.h>
++
++#include "ucontext_i.h"
++
++
++ENTRY(__makecontext)
++	movl	4(%esp), %eax
++
++	/* Load the address of the function we are supposed to run.  */
++	movl	8(%esp), %ecx
++
++	/* Compute the address of the stack.  The information comes from
++	   to us_stack element.  */
++	movl	oSS_SP(%eax), %edx
++	movl	%ecx, oEIP(%eax)
++	addl	oSS_SIZE(%eax), %edx
++
++	/* Remember the number of parameters for the exit handler since
++	   it has to remove them.  We store the number in the EBX register
++	   which the function we will call must preserve.  */
++	movl	12(%esp), %ecx
++	movl	%ecx, oEBX(%eax)
++
++	/* Make room on the new stack for the parameters.
++	   Room for the arguments, return address (== L(exitcode)) and
++	   oLINK pointer is needed.  One of the pointer sizes is subtracted
++	   after aligning the stack.  */
++	negl	%ecx
++	leal	-4(%edx,%ecx,4), %edx
++	negl	%ecx
++
++	/* Align the stack.  */
++	andl	$0xfffffff0, %edx
++	subl	$4, %edx
++
++	/* Store the future stack pointer.  */
++	movl	%edx, oESP(%eax)
++
++	/* Put the next context on the new stack (from the uc_link
++	   element).  */
++	movl	oLINK(%eax), %eax
++	movl	%eax, 4(%edx,%ecx,4)
++
++	/* Copy all the parameters.  */
++	jecxz	2f
++1:	movl	12(%esp,%ecx,4), %eax
++	movl	%eax, (%edx,%ecx,4)
++	decl	%ecx
++	jnz	1b
++2:
++
++	/* If the function we call returns we must continue with the
++	   context which is given in the uc_link element.  To do this
++	   set the return address for the function the user provides
++	   to a little bit of helper code which does the magic (see
++	   below).  */
++#ifdef __PIC__
++	call	1f
++	cfi_adjust_cfa_offset (4)
++1:	popl	%ecx
++	cfi_adjust_cfa_offset (-4)
++	addl	$L(exitcode)-1b, %ecx
++	movl	%ecx, (%edx)
++#else
++	movl	$L(exitcode), (%edx)
++#endif
++	/* 'makecontext' returns no value.  */
++L(pseudo_end):
++	ret
++
++	/* This is the helper code which gets called if a function which
++	   is registered with 'makecontext' returns.  In this case we
++	   have to install the context listed in the uc_link element of
++	   the context 'makecontext' manipulated at the time of the
++	   'makecontext' call.  If the pointer is NULL the process must
++	   terminate.  */
++	cfi_endproc
++L(exitcode):
++	/* This removes the parameters passed to the function given to
++	   'makecontext' from the stack.  EBX contains the number of
++	   parameters (see above).  */
++	leal	(%esp,%ebx,4), %esp
++
++#ifdef	__PIC__
++	call	1f
++1:	popl	%ebx
++	addl	$_GLOBAL_OFFSET_TABLE_+[.-1b], %ebx
++#endif
++	cmpl	$0, (%esp)		/* Check the next context.  */
++	je	2f			/* If it is zero exit.  */
++
++	call	JUMPTARGET(__setcontext)
++	/* If this returns (which can happen if the syscall fails) we'll
++	   exit the program with the return error value (-1).  */
++
++	movl	%eax, (%esp)
++2:	call	HIDDEN_JUMPTARGET(exit)
++	/* The 'exit' call should never return.  In case it does cause
++	   the process to terminate.  */
++	hlt
++	cfi_startproc
++END(__makecontext)
++
++weak_alias (__makecontext, makecontext)
+diff --git a/libc/sysdeps/linux/i386/setcontext.S b/libc/sysdeps/linux/i386/setcontext.S
+new file mode 100644
+index 0000000..ae953cc
+--- /dev/null
++++ b/libc/sysdeps/linux/i386/setcontext.S
+@@ -0,0 +1,96 @@
++/* Install given context.
++   Copyright (C) 2001-2012 Free Software Foundation, Inc.
++   This file is part of the GNU C Library.
++   Contributed by Ulrich Drepper <drepper@redhat.com>, 2001.
++
++   The GNU C Library is free software; you can redistribute it and/or
++   modify it under the terms of the GNU Lesser General Public
++   License as published by the Free Software Foundation; either
++   version 2.1 of the License, or (at your option) any later version.
++
++   The GNU C Library is distributed in the hope that it will be useful,
++   but WITHOUT ANY WARRANTY; without even the implied warranty of
++   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
++   Lesser General Public License for more details.
++
++   You should have received a copy of the GNU Lesser General Public
++   License along with the GNU C Library; if not, see
++   <http://www.gnu.org/licenses/>.  */
++
++#include <sysdep.h>
++
++#include "ucontext_i.h"
++
++
++ENTRY(__setcontext)
++	/* Load address of the context data structure.  */
++	movl	4(%esp), %eax
++
++	/* Get the current signal mask.  Note that we preserve EBX in case
++	   the system call fails and we return from the function with an
++	   error.  */
++	pushl	%ebx
++	cfi_adjust_cfa_offset (4)
++	xorl	%edx, %edx
++	leal	oSIGMASK(%eax), %ecx
++	movl	$SIG_SETMASK, %ebx
++	cfi_rel_offset (ebx, 0)
++	movl	$__NR_sigprocmask, %eax
++	ENTER_KERNEL
++	popl	%ebx
++	cfi_adjust_cfa_offset (-4)
++	cfi_restore (ebx)
++	cmpl	$-4095, %eax		/* Check %eax for error.  */
++	jae	SYSCALL_ERROR_LABEL	/* Jump to error handler if error.  */
++
++	/* EAX was modified, reload it.  */
++	movl	4(%esp), %eax
++
++	/* Restore the floating-point context.  Not the registers, only the
++	   rest.  */
++	movl	oFPREGS(%eax), %ecx
++	fldenv	(%ecx)
++
++	/* Restore the FS segment register.  We don't touch the GS register
++	   since it is used for threads.  */
++	movl	oFS(%eax), %ecx
++	movw	%cx, %fs
++
++	/* Fetch the address to return to.  */
++	movl	oEIP(%eax), %ecx
++
++	/* Load the new stack pointer.  */
++	cfi_def_cfa (eax, 0)
++	cfi_offset (edi, oEDI)
++	cfi_offset (esi, oESI)
++	cfi_offset (ebp, oEBP)
++	cfi_offset (ebx, oEBX)
++	cfi_offset (edx, oEDX)
++	cfi_offset (ecx, oECX)
++	movl	oESP(%eax), %esp
++
++	/* Push the return address on the new stack so we can return there.  */
++	pushl	%ecx
++
++	/* Load the values of all the 32-bit registers (except ESP).
++	   Since we are loading from EAX, it must be last.  */
++	movl	oEDI(%eax), %edi
++	movl	oESI(%eax), %esi
++	movl	oEBP(%eax), %ebp
++	movl	oEBX(%eax), %ebx
++	movl	oEDX(%eax), %edx
++	movl	oECX(%eax), %ecx
++	movl	oEAX(%eax), %eax
++
++	/* End FDE here, we fall into another context.  */
++	cfi_endproc
++	cfi_startproc
++
++	/* The following 'ret' will pop the address of the code and jump
++	   to it.  */
++
++L(pseudo_end):
++	ret
++PSEUDO_END(__setcontext)
++
++weak_alias (__setcontext, setcontext)
+diff --git a/libc/sysdeps/linux/i386/swapcontext.S b/libc/sysdeps/linux/i386/swapcontext.S
+new file mode 100644
+index 0000000..ee5d0e4
+--- /dev/null
++++ b/libc/sysdeps/linux/i386/swapcontext.S
+@@ -0,0 +1,110 @@
++/* Save current context and install the given one.
++   Copyright (C) 2001-2012 Free Software Foundation, Inc.
++   This file is part of the GNU C Library.
++   Contributed by Ulrich Drepper <drepper@redhat.com>, 2001.
++
++   The GNU C Library is free software; you can redistribute it and/or
++   modify it under the terms of the GNU Lesser General Public
++   License as published by the Free Software Foundation; either
++   version 2.1 of the License, or (at your option) any later version.
++
++   The GNU C Library is distributed in the hope that it will be useful,
++   but WITHOUT ANY WARRANTY; without even the implied warranty of
++   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
++   Lesser General Public License for more details.
++
++   You should have received a copy of the GNU Lesser General Public
++   License along with the GNU C Library; if not, see
++   <http://www.gnu.org/licenses/>.  */
++
++#include <sysdep.h>
++
++#include "ucontext_i.h"
++
++
++ENTRY(__swapcontext)
++	/* Load address of the context data structure we save in.  */
++	movl	4(%esp), %eax
++
++	/* Return value of swapcontext.  EAX is the only register whose
++	   value is not preserved.  */
++	movl	$0, oEAX(%eax)
++
++	/* Save the 32-bit register values and the return address.  */
++	movl	%ecx, oECX(%eax)
++	movl	%edx, oEDX(%eax)
++	movl	%edi, oEDI(%eax)
++	movl	%esi, oESI(%eax)
++	movl	%ebp, oEBP(%eax)
++	movl	(%esp), %ecx
++	movl	%ecx, oEIP(%eax)
++	leal	4(%esp), %ecx
++	movl	%ecx, oESP(%eax)
++	movl	%ebx, oEBX(%eax)
++
++	/* Save the FS segment register.  */
++	xorl	%edx, %edx
++	movw	%fs, %dx
++	movl	%edx, oFS(%eax)
++
++	/* We have separate floating-point register content memory on the
++	   stack.  We use the __fpregs_mem block in the context.  Set the
++	   links up correctly.  */
++	leal	oFPREGSMEM(%eax), %ecx
++	movl	%ecx, oFPREGS(%eax)
++	/* Save the floating-point context.  */
++	fnstenv	(%ecx)
++
++	/* Load address of the context data structure we have to load.  */
++	movl	8(%esp), %ecx
++
++	/* Save the current signal mask and install the new one.  */
++	pushl	%ebx
++	leal	oSIGMASK(%eax), %edx
++	leal	oSIGMASK(%ecx), %ecx
++	movl	$SIG_SETMASK, %ebx
++	movl	$__NR_sigprocmask, %eax
++	ENTER_KERNEL
++	popl	%ebx
++	cmpl	$-4095, %eax		/* Check %eax for error.  */
++	jae	SYSCALL_ERROR_LABEL	/* Jump to error handler if error.  */
++
++	/* EAX was modified, reload it.  */
++	movl	8(%esp), %eax
++
++	/* Restore the floating-point context.  Not the registers, only the
++	   rest.  */
++	movl	oFPREGS(%eax), %ecx
++	fldenv	(%ecx)
++
++	/* Restore the FS segment register.  We don't touch the GS register
++	   since it is used for threads.  */
++	movl	oFS(%eax), %edx
++	movw	%dx, %fs
++
++	/* Fetch the address to return to.  */
++	movl	oEIP(%eax), %ecx
++
++	/* Load the new stack pointer.  */
++	movl	oESP(%eax), %esp
++
++	/* Push the return address on the new stack so we can return there.  */
++	pushl	%ecx
++
++	/* Load the values of all the 32-bit registers (except ESP).
++	   Since we are loading from EAX, it must be last.  */
++	movl	oEDI(%eax), %edi
++	movl	oESI(%eax), %esi
++	movl	oEBP(%eax), %ebp
++	movl	oEBX(%eax), %ebx
++	movl	oEDX(%eax), %edx
++	movl	oECX(%eax), %ecx
++	movl	oEAX(%eax), %eax
++
++	/* The following 'ret' will pop the address of the code and jump
++	   to it.  */
++L(pseudo_end):
++	ret
++PSEUDO_END(__swapcontext)
++
++weak_alias (__swapcontext, swapcontext)
+diff --git a/libc/sysdeps/linux/i386/ucontext_i.sym b/libc/sysdeps/linux/i386/ucontext_i.sym
+new file mode 100644
+index 0000000..b11a550
+--- /dev/null
++++ b/libc/sysdeps/linux/i386/ucontext_i.sym
+@@ -0,0 +1,30 @@
++#include <stddef.h>
++#include <signal.h>
++#include <sys/ucontext.h>
++
++--
++
++SIG_BLOCK
++SIG_SETMASK
++
++#define ucontext(member)	offsetof (ucontext_t, member)
++#define mcontext(member)	ucontext (uc_mcontext.member)
++#define mreg(reg)		mcontext (gregs[REG_##reg])
++
++oLINK		ucontext (uc_link)
++oSS_SP		ucontext (uc_stack.ss_sp)
++oSS_SIZE	ucontext (uc_stack.ss_size)
++oGS		mreg (GS)
++oFS		mreg (FS)
++oEDI		mreg (EDI)
++oESI		mreg (ESI)
++oEBP		mreg (EBP)
++oESP		mreg (ESP)
++oEBX		mreg (EBX)
++oEDX		mreg (EDX)
++oECX		mreg (ECX)
++oEAX		mreg (EAX)
++oEIP		mreg (EIP)
++oFPREGS		mcontext (fpregs)
++oSIGMASK	ucontext (uc_sigmask)
++oFPREGSMEM	ucontext (__fpregs_mem)
+diff --git a/libc/sysdeps/linux/mips/Makefile.arch b/libc/sysdeps/linux/mips/Makefile.arch
+index fce99f8..00b9331 100644
+--- a/libc/sysdeps/linux/mips/Makefile.arch
++++ b/libc/sysdeps/linux/mips/Makefile.arch
+@@ -27,3 +27,7 @@ ASFLAGS-syscall_error.S += -D_LIBC_REENTRANT
+ 
+ ARCH_HEADERS := sgidefs.h
+ # regdef.h
++
++ifeq ($(UCLIBC_HAS_CONTEXT_FUNCS),y)
++SSRC += makecontext.S setcontext.S getcontext.S swapcontext.S
++endif
+diff --git a/libc/sysdeps/linux/mips/getcontext.S b/libc/sysdeps/linux/mips/getcontext.S
+new file mode 100644
+index 0000000..c4ad081
+--- /dev/null
++++ b/libc/sysdeps/linux/mips/getcontext.S
+@@ -0,0 +1,148 @@
++/* Save current context.
++   Copyright (C) 2009 Free Software Foundation, Inc.
++   This file is part of the GNU C Library.
++   Contributed by Maciej W. Rozycki <macro@codesourcery.com>.
++
++   The GNU C Library is free software; you can redistribute it and/or
++   modify it under the terms of the GNU Lesser General Public
++   License as published by the Free Software Foundation; either
++   version 2.1 of the License, or (at your option) any later version.
++
++   The GNU C Library is distributed in the hope that it will be useful,
++   but WITHOUT ANY WARRANTY; without even the implied warranty of
++   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
++   Lesser General Public License for more details.
++
++   You should have received a copy of the GNU Lesser General Public
++   License along with the GNU C Library.  If not, see
++   <http://www.gnu.org/licenses/>.  */
++
++#include <sysdep.h>
++#include <sys/asm.h>
++#include <sys/fpregdef.h>
++#include <sys/regdef.h>
++
++#include "ucontext_i.h"
++
++/* int getcontext (ucontext_t *ucp) */
++
++	.text
++LOCALSZ = 0
++MASK = 0x00000000
++#ifdef __PIC__
++LOCALSZ = 1						/* save gp */
++# if _MIPS_SIM != _ABIO32
++MASK = 0x10000000
++# endif
++#endif
++FRAMESZ = ((LOCALSZ * SZREG) + ALSZ) & ALMASK
++GPOFF = FRAMESZ - (1 * SZREG)
++
++NESTED (__getcontext, FRAMESZ, ra)
++	.mask	MASK, 0
++	.fmask	0x00000000, 0
++
++#ifdef __PIC__
++	SETUP_GP
++
++	move	a2, sp
++# define _SP a2
++
++# if _MIPS_SIM != _ABIO32
++	move	a3, gp
++#  define _GP a3
++# endif
++
++	PTR_ADDIU sp, -FRAMESZ
++	SETUP_GP64 (GPOFF, __getcontext)
++	SAVE_GP (GPOFF)
++
++#else  /* ! __PIC__ */
++# define _SP sp
++# define _GP gp
++
++#endif /* ! __PIC__ */
++
++#ifdef PROF
++	.set	noat
++	move	AT, ra
++	jal	_mcount
++	.set	at
++#endif
++
++	/* Store a magic flag.	*/
++	li	v1, 1
++	REG_S	v1, (0 * SZREG + MCONTEXT_GREGS)(a0)	/* zero */
++
++	REG_S	s0, (16 * SZREG + MCONTEXT_GREGS)(a0)
++	REG_S	s1, (17 * SZREG + MCONTEXT_GREGS)(a0)
++	REG_S	s2, (18 * SZREG + MCONTEXT_GREGS)(a0)
++	REG_S	s3, (19 * SZREG + MCONTEXT_GREGS)(a0)
++	REG_S	s4, (20 * SZREG + MCONTEXT_GREGS)(a0)
++	REG_S	s5, (21 * SZREG + MCONTEXT_GREGS)(a0)
++	REG_S	s6, (22 * SZREG + MCONTEXT_GREGS)(a0)
++	REG_S	s7, (23 * SZREG + MCONTEXT_GREGS)(a0)
++#if ! defined (__PIC__) || _MIPS_SIM != _ABIO32
++	REG_S	_GP, (28 * SZREG + MCONTEXT_GREGS)(a0)
++#endif
++	REG_S	_SP, (29 * SZREG + MCONTEXT_GREGS)(a0)
++	REG_S	fp, (30 * SZREG + MCONTEXT_GREGS)(a0)
++	REG_S	ra, (31 * SZREG + MCONTEXT_GREGS)(a0)
++	REG_S	ra, MCONTEXT_PC(a0)
++
++#ifdef __mips_hard_float
++# if _MIPS_SIM == _ABI64
++	s.d	fs0, (24 * SZREG + MCONTEXT_FPREGS)(a0)
++	s.d	fs1, (25 * SZREG + MCONTEXT_FPREGS)(a0)
++	s.d	fs2, (26 * SZREG + MCONTEXT_FPREGS)(a0)
++	s.d	fs3, (27 * SZREG + MCONTEXT_FPREGS)(a0)
++	s.d	fs4, (28 * SZREG + MCONTEXT_FPREGS)(a0)
++	s.d	fs5, (29 * SZREG + MCONTEXT_FPREGS)(a0)
++	s.d	fs6, (30 * SZREG + MCONTEXT_FPREGS)(a0)
++	s.d	fs7, (31 * SZREG + MCONTEXT_FPREGS)(a0)
++
++# else  /* _MIPS_SIM != _ABI64 */
++	s.d	fs0, (20 * SZREG + MCONTEXT_FPREGS)(a0)
++	s.d	fs1, (22 * SZREG + MCONTEXT_FPREGS)(a0)
++	s.d	fs2, (24 * SZREG + MCONTEXT_FPREGS)(a0)
++	s.d	fs3, (26 * SZREG + MCONTEXT_FPREGS)(a0)
++	s.d	fs4, (28 * SZREG + MCONTEXT_FPREGS)(a0)
++	s.d	fs5, (30 * SZREG + MCONTEXT_FPREGS)(a0)
++
++# endif /* _MIPS_SIM != _ABI64 */
++
++	cfc1	v1, fcr31
++	sw	v1, MCONTEXT_FPC_CSR(a0)
++#endif /* __mips_hard_float */
++
++/* rt_sigprocmask (SIG_BLOCK, NULL, &ucp->uc_sigmask, _NSIG8) */
++	li	a3, _NSIG8
++	PTR_ADDU a2, a0, UCONTEXT_SIGMASK
++	move	a1, zero
++	li	a0, SIG_BLOCK
++
++	li	v0, SYS_ify (rt_sigprocmask)
++	syscall
++	bnez	a3, 99f
++
++#ifdef __PIC__
++	RESTORE_GP64
++	PTR_ADDIU sp, FRAMESZ
++#endif
++	move	v0, zero
++	jr	ra
++
++99:
++#ifdef __PIC__
++	PTR_LA	t9, JUMPTARGET (__syscall_error)
++	RESTORE_GP64
++	PTR_ADDIU sp, FRAMESZ
++	jr	t9
++
++#else  /* ! __PIC__ */
++
++	j	JUMPTARGET (__syscall_error)
++#endif /* ! __PIC__ */
++PSEUDO_END (__getcontext)
++
++weak_alias (__getcontext, getcontext)
+diff --git a/libc/sysdeps/linux/mips/kernel_rt_sigframe.h b/libc/sysdeps/linux/mips/kernel_rt_sigframe.h
+new file mode 100644
+index 0000000..77ffaf6
+--- /dev/null
++++ b/libc/sysdeps/linux/mips/kernel_rt_sigframe.h
+@@ -0,0 +1,10 @@
++/* Linux kernel RT signal frame. */
++typedef struct kernel_rt_sigframe
++  {
++    uint32_t rs_ass[4];
++    uint32_t rs_code[2];
++    siginfo_t rs_info;
++    struct ucontext rs_uc;
++    uint32_t rs_altcode[8] __attribute__ ((__aligned__ (1 << 7)));
++  }
++kernel_rt_sigframe_t;
+diff --git a/libc/sysdeps/linux/mips/makecontext.S b/libc/sysdeps/linux/mips/makecontext.S
+new file mode 100644
+index 0000000..6427339
+--- /dev/null
++++ b/libc/sysdeps/linux/mips/makecontext.S
+@@ -0,0 +1,188 @@
++/* Modify saved context.
++   Copyright (C) 2009 Free Software Foundation, Inc.
++   This file is part of the GNU C Library.
++   Contributed by Maciej W. Rozycki <macro@codesourcery.com>.
++
++   The GNU C Library is free software; you can redistribute it and/or
++   modify it under the terms of the GNU Lesser General Public
++   License as published by the Free Software Foundation; either
++   version 2.1 of the License, or (at your option) any later version.
++
++   The GNU C Library is distributed in the hope that it will be useful,
++   but WITHOUT ANY WARRANTY; without even the implied warranty of
++   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
++   Lesser General Public License for more details.
++
++   You should have received a copy of the GNU Lesser General Public
++   License along with the GNU C Library.  If not, see
++   <http://www.gnu.org/licenses/>.  */
++
++#include <sysdep.h>
++#include <sys/asm.h>
++#include <sys/fpregdef.h>
++#include <sys/regdef.h>
++
++#include "ucontext_i.h"
++
++/* int makecontext (ucontext_t *ucp, (void *func) (), int argc, ...) */
++
++	.text
++LOCALSZ = 0
++ARGSZ = 0
++MASK = 0x00000000
++#ifdef __PIC__
++LOCALSZ = 1						/* save gp */
++#endif
++#if _MIPS_SIM != _ABIO32
++ARGSZ = 5						/* save a3-a7 */
++# ifdef __PIC__
++MASK = 0x10000000
++# endif
++#endif
++FRAMESZ = (((ARGSZ + LOCALSZ) * SZREG) + ALSZ) & ALMASK
++GPOFF = FRAMESZ - ((ARGSZ + 1) * SZREG)
++#if _MIPS_SIM != _ABIO32
++A3OFF = FRAMESZ - (5 * SZREG)				/* callee-allocated */
++A4OFF = FRAMESZ - (4 * SZREG)
++A5OFF = FRAMESZ - (3 * SZREG)
++A6OFF = FRAMESZ - (2 * SZREG)
++A7OFF = FRAMESZ - (1 * SZREG)
++NARGREGS = 8
++#else
++A3OFF = FRAMESZ + (3 * SZREG)				/* caller-allocated */
++NARGREGS = 4
++#endif
++
++NESTED (__makecontext, FRAMESZ, ra)
++	.mask	MASK, -(ARGSZ * SZREG)
++	.fmask	0x00000000, 0
++
++98:
++#ifdef __PIC__
++	SETUP_GP
++#endif
++
++	PTR_ADDIU sp, -FRAMESZ
++
++#ifdef __PIC__
++	SETUP_GP64 (GPOFF, __makecontext)
++	SAVE_GP (GPOFF)
++#endif
++
++#ifdef PROF
++	.set	noat
++	move	AT, ra
++	jal	_mcount
++	.set	at
++#endif
++
++	/* Store args to be passed.  */
++	REG_S	a3, A3OFF(sp)
++#if _MIPS_SIM != _ABIO32
++	REG_S	a4, A4OFF(sp)
++	REG_S	a5, A5OFF(sp)
++	REG_S	a6, A6OFF(sp)
++	REG_S	a7, A7OFF(sp)
++#endif
++
++	/* Store a magic flag.  */
++	li	v1, 1
++	REG_S	v1, (0 * SZREG + MCONTEXT_GREGS)(a0)	/* zero */
++
++	/* Set up the stack.  */
++	PTR_L	t0, STACK_SP(a0)
++	PTR_L	t2, STACK_SIZE(a0)
++	PTR_ADDIU t1, sp, A3OFF
++	PTR_ADDU t0, t2
++	and	t0, ALMASK
++	blez	a2, 2f					/* no arguments */
++
++	/* Store register arguments.  */
++	PTR_ADDIU t2, a0, MCONTEXT_GREGS + 4 * SZREG
++	move	t3, zero
++0:
++	addiu	t3, 1
++	REG_L	v1, (t1)
++	PTR_ADDIU t1, SZREG
++	REG_S	v1, (t2)
++	PTR_ADDIU t2, SZREG
++	bgeu	t3, a2, 2f				/* all done */
++	bltu	t3, NARGREGS, 0b			/* next */
++
++	/* Make room for stack arguments.  */
++	PTR_SUBU t2, a2, t3
++	PTR_SLL	t2, 3
++	PTR_SUBU t0, t2
++	and	t0, ALMASK
++
++	/* Store stack arguments.  */
++	move	t2, t0
++1:
++	addiu	t3, 1
++	REG_L	v1, (t1)
++	PTR_ADDIU t1, SZREG
++	REG_S	v1, (t2)
++	PTR_ADDIU t2, SZREG
++	bltu	t3, a2, 1b				/* next */
++
++2:
++#if _MIPS_SIM == _ABIO32
++	/* Make room for a0-a3 storage.  */
++	PTR_ADDIU t0, -(NARGSAVE * SZREG)
++#endif
++	PTR_L	v1, UCONTEXT_LINK(a0)
++#ifdef __PIC__
++	PTR_ADDIU t9, 99f - 98b
++#else
++	PTR_LA	t9, 99f
++#endif
++	REG_S	t0, (29 * SZREG + MCONTEXT_GREGS)(a0)	/* sp */
++	REG_S	v1, (16 * SZREG + MCONTEXT_GREGS)(a0)	/* s0 */
++#ifdef __PIC__
++	REG_S	gp, (17 * SZREG + MCONTEXT_GREGS)(a0)	/* s1 */
++#endif
++	REG_S	t9, (31 * SZREG + MCONTEXT_GREGS)(a0)	/* ra */
++	REG_S	a1, MCONTEXT_PC(a0)
++
++#ifdef __PIC__
++	RESTORE_GP64
++	PTR_ADDIU sp, FRAMESZ
++#endif
++	jr	ra
++
++99:
++#ifdef __PIC__
++	move	gp, s1
++#endif
++	move	a0, zero
++	beqz	s0, 0f
++
++	/* setcontext (ucp) */
++	move	a0, s0
++#ifdef __PIC__
++	PTR_LA	t9, JUMPTARGET (__setcontext)
++	jalr	t9
++# if _MIPS_SIM == _ABIO32
++	move	gp, s1
++# endif
++#else
++	jal	JUMPTARGET (__setcontext)
++#endif
++	move	a0, v0
++
++0:
++	/* exit (a0) */
++#ifdef __PIC__
++	PTR_LA	t9, HIDDEN_JUMPTARGET (exit)
++	jalr	t9
++#else
++	jal	HIDDEN_JUMPTARGET (exit)
++#endif
++
++	/* You don't exist, you won't feel anything.  */
++1:
++	lb	zero, (zero)
++	b	1b
++PSEUDO_END (__makecontext)
++
++weak_alias (__makecontext, makecontext)
+diff --git a/libc/sysdeps/linux/mips/setcontext.S b/libc/sysdeps/linux/mips/setcontext.S
+new file mode 100644
+index 0000000..d3cde0e
+--- /dev/null
++++ b/libc/sysdeps/linux/mips/setcontext.S
+@@ -0,0 +1,191 @@
++/* Set current context.
++   Copyright (C) 2009 Free Software Foundation, Inc.
++   This file is part of the GNU C Library.
++   Contributed by Maciej W. Rozycki <macro@codesourcery.com>.
++
++   The GNU C Library is free software; you can redistribute it and/or
++   modify it under the terms of the GNU Lesser General Public
++   License as published by the Free Software Foundation; either
++   version 2.1 of the License, or (at your option) any later version.
++
++   The GNU C Library is distributed in the hope that it will be useful,
++   but WITHOUT ANY WARRANTY; without even the implied warranty of
++   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
++   Lesser General Public License for more details.
++
++   You should have received a copy of the GNU Lesser General Public
++   License along with the GNU C Library.  If not, see
++   <http://www.gnu.org/licenses/>.  */
++
++#include <sysdep.h>
++#include <sys/asm.h>
++#include <sys/fpregdef.h>
++#include <sys/regdef.h>
++
++#include "ucontext_i.h"
++
++/* int setcontext (const ucontext_t *ucp) */
++
++	.text
++LOCALSZ = 0
++ARGSZ = 0
++MASK = 0x00000000
++#ifdef __PIC__
++LOCALSZ = 1						/* save gp */
++#endif
++#if _MIPS_SIM != _ABIO32
++ARGSZ = 1						/* save a0 */
++# ifdef __PIC__
++MASK = 0x10000000
++# endif
++#endif
++FRAMESZ = (((ARGSZ + LOCALSZ) * SZREG) + ALSZ) & ALMASK
++GPOFF = FRAMESZ - ((ARGSZ + 1) * SZREG)
++#if _MIPS_SIM != _ABIO32
++A0OFF = FRAMESZ - (1 * SZREG)				/* callee-allocated */
++#else
++A0OFF = FRAMESZ + (0 * SZREG)				/* caller-allocated */
++#endif
++
++NESTED (__setcontext, FRAMESZ, ra)
++	.mask	MASK, -(ARGSZ * SZREG)
++	.fmask	0x00000000, 0
++
++#ifdef __PIC__
++	SETUP_GP
++#endif
++
++	PTR_ADDIU sp, -FRAMESZ
++
++#ifdef __PIC__
++	SETUP_GP64 (GPOFF, __setcontext)
++	SAVE_GP (GPOFF)
++#endif
++
++#ifdef PROF
++	.set	noat
++	move	AT, ra
++	jal	_mcount
++	.set	at
++#endif
++
++	/* Check for the magic flag.  */
++	li	v0, 1
++	REG_L	v1, (0 * SZREG + MCONTEXT_GREGS)(a0)	/* zero */
++	bne	v0, v1, 98f
++
++	REG_S	a0, A0OFF(sp)
++
++/* rt_sigprocmask (SIG_SETMASK, &ucp->uc_sigmask, NULL, _NSIG8) */
++	li	a3, _NSIG8
++	move	a2, zero
++	PTR_ADDU a1, a0, UCONTEXT_SIGMASK
++	li	a0, SIG_SETMASK
++
++	li	v0, SYS_ify (rt_sigprocmask)
++	syscall
++	bnez	a3, 99f
++
++	REG_L	v0, A0OFF(sp)
++
++#ifdef __mips_hard_float
++# if _MIPS_SIM == _ABI64
++	l.d	fs0, (24 * SZREG + MCONTEXT_FPREGS)(v0)
++	l.d	fs1, (25 * SZREG + MCONTEXT_FPREGS)(v0)
++	l.d	fs2, (26 * SZREG + MCONTEXT_FPREGS)(v0)
++	l.d	fs3, (27 * SZREG + MCONTEXT_FPREGS)(v0)
++	l.d	fs4, (28 * SZREG + MCONTEXT_FPREGS)(v0)
++	l.d	fs5, (29 * SZREG + MCONTEXT_FPREGS)(v0)
++	l.d	fs6, (30 * SZREG + MCONTEXT_FPREGS)(v0)
++	l.d	fs7, (31 * SZREG + MCONTEXT_FPREGS)(v0)
++
++# else  /* _MIPS_SIM != _ABI64 */
++	l.d	fs0, (20 * SZREG + MCONTEXT_FPREGS)(v0)
++	l.d	fs1, (22 * SZREG + MCONTEXT_FPREGS)(v0)
++	l.d	fs2, (24 * SZREG + MCONTEXT_FPREGS)(v0)
++	l.d	fs3, (26 * SZREG + MCONTEXT_FPREGS)(v0)
++	l.d	fs4, (28 * SZREG + MCONTEXT_FPREGS)(v0)
++	l.d	fs5, (30 * SZREG + MCONTEXT_FPREGS)(v0)
++
++# endif /* _MIPS_SIM != _ABI64 */
++
++	lw	v1, MCONTEXT_FPC_CSR(v0)
++	ctc1	v1, fcr31
++#endif /* __mips_hard_float */
++
++	/* Note the contents of argument registers will be random
++	   unless makecontext() has been called.  */
++	REG_L	a0, (4 * SZREG + MCONTEXT_GREGS)(v0)
++	REG_L	a1, (5 * SZREG + MCONTEXT_GREGS)(v0)
++	REG_L	a2, (6 * SZREG + MCONTEXT_GREGS)(v0)
++	REG_L	a3, (7 * SZREG + MCONTEXT_GREGS)(v0)
++#if _MIPS_SIM != _ABIO32
++	REG_L	a4, (8 * SZREG + MCONTEXT_GREGS)(v0)
++	REG_L	a5, (9 * SZREG + MCONTEXT_GREGS)(v0)
++	REG_L	a6, (10 * SZREG + MCONTEXT_GREGS)(v0)
++	REG_L	a7, (11 * SZREG + MCONTEXT_GREGS)(v0)
++#endif
++
++	REG_L	s0, (16 * SZREG + MCONTEXT_GREGS)(v0)
++	REG_L	s1, (17 * SZREG + MCONTEXT_GREGS)(v0)
++	REG_L	s2, (18 * SZREG + MCONTEXT_GREGS)(v0)
++	REG_L	s3, (19 * SZREG + MCONTEXT_GREGS)(v0)
++	REG_L	s4, (20 * SZREG + MCONTEXT_GREGS)(v0)
++	REG_L	s5, (21 * SZREG + MCONTEXT_GREGS)(v0)
++	REG_L	s6, (22 * SZREG + MCONTEXT_GREGS)(v0)
++	REG_L	s7, (23 * SZREG + MCONTEXT_GREGS)(v0)
++#if ! defined (__PIC__) || _MIPS_SIM != _ABIO32
++	REG_L	gp, (28 * SZREG + MCONTEXT_GREGS)(v0)
++#endif
++	REG_L	sp, (29 * SZREG + MCONTEXT_GREGS)(v0)
++	REG_L	fp, (30 * SZREG + MCONTEXT_GREGS)(v0)
++	REG_L	ra, (31 * SZREG + MCONTEXT_GREGS)(v0)
++	REG_L	t9, MCONTEXT_PC(v0)
++
++	move	v0, zero
++	jr	t9
++
++98:
++	/* This is a context obtained from a signal handler.
++	   Perform a full restore by pushing the context
++	   passed onto a simulated signal frame on the stack
++	   and call the signal return syscall as if a signal
++	   handler exited normally.  */
++	PTR_ADDIU sp, -((RT_SIGFRAME_SIZE + ALSZ) & ALMASK)
++
++	/* Only ucontext is referred to from rt_sigreturn,
++	   copy it.  */
++	PTR_ADDIU t1, sp, RT_SIGFRAME_UCONTEXT
++	li	t3, ((UCONTEXT_SIZE + SZREG - 1) / SZREG) - 1
++0:
++	REG_L	t2, (a0)
++	PTR_ADDIU a0, SZREG
++	REG_S	t2, (t1)
++	PTR_ADDIU t1, SZREG
++	.set	noreorder
++	bgtz	t3, 0b
++	 addiu	t3, -1
++	.set	reorder
++
++/* rt_sigreturn () -- no arguments, sp points to struct rt_sigframe.  */
++	li	v0, SYS_ify (rt_sigreturn)
++	syscall
++
++	/* Restore the stack and fall through to the error
++	   path.  Successful rt_sigreturn never returns to
++	   its calling place.  */
++	PTR_ADDIU sp, ((RT_SIGFRAME_SIZE + ALSZ) & ALMASK)
++99:
++#ifdef __PIC__
++	PTR_LA	t9, JUMPTARGET (__syscall_error)
++	RESTORE_GP64
++	PTR_ADDIU sp, FRAMESZ
++	jr	t9
++
++#else  /* ! __PIC__ */
++
++	j	JUMPTARGET (__syscall_error)
++#endif /* ! __PIC__ */
++PSEUDO_END (__setcontext)
++
++weak_alias (__setcontext, setcontext)
+diff --git a/libc/sysdeps/linux/mips/swapcontext.S b/libc/sysdeps/linux/mips/swapcontext.S
+new file mode 100644
+index 0000000..c7ac19b
+--- /dev/null
++++ b/libc/sysdeps/linux/mips/swapcontext.S
+@@ -0,0 +1,211 @@
++/* Save and set current context.
++   Copyright (C) 2009 Free Software Foundation, Inc.
++   This file is part of the GNU C Library.
++   Contributed by Maciej W. Rozycki <macro@codesourcery.com>.
++
++   The GNU C Library is free software; you can redistribute it and/or
++   modify it under the terms of the GNU Lesser General Public
++   License as published by the Free Software Foundation; either
++   version 2.1 of the License, or (at your option) any later version.
++
++   The GNU C Library is distributed in the hope that it will be useful,
++   but WITHOUT ANY WARRANTY; without even the implied warranty of
++   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
++   Lesser General Public License for more details.
++
++   You should have received a copy of the GNU Lesser General Public
++   License along with the GNU C Library.  If not, see
++   <http://www.gnu.org/licenses/>.  */
++
++#include <sysdep.h>
++#include <sys/asm.h>
++#include <sys/fpregdef.h>
++#include <sys/regdef.h>
++
++#include "ucontext_i.h"
++
++/* int swapcontext (ucontext_t *oucp, const ucontext_t *ucp) */
++
++	.text
++LOCALSZ = 0
++ARGSZ = 0
++MASK = 0x00000000
++#ifdef __PIC__
++LOCALSZ = 1						/* save gp */
++#endif
++#if _MIPS_SIM != _ABIO32
++ARGSZ = 1						/* save a1 */
++# ifdef __PIC__
++MASK = 0x10000000
++# endif
++#endif
++FRAMESZ = (((ARGSZ + LOCALSZ) * SZREG) + ALSZ) & ALMASK
++GPOFF = FRAMESZ - ((ARGSZ + 1) * SZREG)
++#if _MIPS_SIM != _ABIO32
++A1OFF = FRAMESZ - (1 * SZREG)				/* callee-allocated */
++#else
++A1OFF = FRAMESZ + (1 * SZREG)				/* caller-allocated */
++#endif
++
++NESTED (__swapcontext, FRAMESZ, ra)
++	.mask	MASK, -(ARGSZ * SZREG)
++	.fmask	0x00000000, 0
++
++#ifdef __PIC__
++	SETUP_GP
++
++	move	a2, sp
++# define _SP a2
++
++# if _MIPS_SIM != _ABIO32
++	move	a3, gp
++#  define _GP a3
++# endif
++
++	PTR_ADDIU sp, -FRAMESZ
++	SETUP_GP64 (GPOFF, __swapcontext)
++	SAVE_GP (GPOFF)
++
++#else  /* ! __PIC__ */
++# define _SP sp
++# define _GP gp
++
++#endif /* ! __PIC__ */
++
++#ifdef PROF
++	.set	noat
++	move	AT, ra
++	jal	_mcount
++	.set	at
++#endif
++
++	/* Store a magic flag.	*/
++	li	v1, 1
++	REG_S	v1, (0 * SZREG + MCONTEXT_GREGS)(a0)	/* zero */
++
++	REG_S	s0, (16 * SZREG + MCONTEXT_GREGS)(a0)
++	REG_S	s1, (17 * SZREG + MCONTEXT_GREGS)(a0)
++	REG_S	s2, (18 * SZREG + MCONTEXT_GREGS)(a0)
++	REG_S	s3, (19 * SZREG + MCONTEXT_GREGS)(a0)
++	REG_S	s4, (20 * SZREG + MCONTEXT_GREGS)(a0)
++	REG_S	s5, (21 * SZREG + MCONTEXT_GREGS)(a0)
++	REG_S	s6, (22 * SZREG + MCONTEXT_GREGS)(a0)
++	REG_S	s7, (23 * SZREG + MCONTEXT_GREGS)(a0)
++#if ! defined (__PIC__) || _MIPS_SIM != _ABIO32
++	REG_S	_GP, (28 * SZREG + MCONTEXT_GREGS)(a0)
++#endif
++	REG_S	_SP, (29 * SZREG + MCONTEXT_GREGS)(a0)
++	REG_S	fp, (30 * SZREG + MCONTEXT_GREGS)(a0)
++	REG_S	ra, (31 * SZREG + MCONTEXT_GREGS)(a0)
++	REG_S	ra, MCONTEXT_PC(a0)
++
++#ifdef __mips_hard_float
++# if _MIPS_SIM == _ABI64
++	s.d	fs0, (24 * SZREG + MCONTEXT_FPREGS)(a0)
++	s.d	fs1, (25 * SZREG + MCONTEXT_FPREGS)(a0)
++	s.d	fs2, (26 * SZREG + MCONTEXT_FPREGS)(a0)
++	s.d	fs3, (27 * SZREG + MCONTEXT_FPREGS)(a0)
++	s.d	fs4, (28 * SZREG + MCONTEXT_FPREGS)(a0)
++	s.d	fs5, (29 * SZREG + MCONTEXT_FPREGS)(a0)
++	s.d	fs6, (30 * SZREG + MCONTEXT_FPREGS)(a0)
++	s.d	fs7, (31 * SZREG + MCONTEXT_FPREGS)(a0)
++
++# else  /* _MIPS_SIM != _ABI64 */
++	s.d	fs0, (20 * SZREG + MCONTEXT_FPREGS)(a0)
++	s.d	fs1, (22 * SZREG + MCONTEXT_FPREGS)(a0)
++	s.d	fs2, (24 * SZREG + MCONTEXT_FPREGS)(a0)
++	s.d	fs3, (26 * SZREG + MCONTEXT_FPREGS)(a0)
++	s.d	fs4, (28 * SZREG + MCONTEXT_FPREGS)(a0)
++	s.d	fs5, (30 * SZREG + MCONTEXT_FPREGS)(a0)
++
++# endif /* _MIPS_SIM != _ABI64 */
++
++	cfc1	v1, fcr31
++	sw	v1, MCONTEXT_FPC_CSR(a0)
++#endif /* __mips_hard_float */
++
++	REG_S	a1, A1OFF(sp)
++
++/* rt_sigprocmask (SIG_SETMASK, &ucp->uc_sigmask, &oucp->uc_sigmask, _NSIG8) */
++	li	a3, _NSIG8
++	PTR_ADDU a2, a0, UCONTEXT_SIGMASK
++	PTR_ADDU a1, a1, UCONTEXT_SIGMASK
++	li	a0, SIG_SETMASK
++
++	li	v0, SYS_ify (rt_sigprocmask)
++	syscall
++	bnez	a3, 99f
++
++	REG_L	v0, A1OFF(sp)
++
++#ifdef __mips_hard_float
++# if _MIPS_SIM == _ABI64
++	l.d	fs0, (24 * SZREG + MCONTEXT_FPREGS)(v0)
++	l.d	fs1, (25 * SZREG + MCONTEXT_FPREGS)(v0)
++	l.d	fs2, (26 * SZREG + MCONTEXT_FPREGS)(v0)
++	l.d	fs3, (27 * SZREG + MCONTEXT_FPREGS)(v0)
++	l.d	fs4, (28 * SZREG + MCONTEXT_FPREGS)(v0)
++	l.d	fs5, (29 * SZREG + MCONTEXT_FPREGS)(v0)
++	l.d	fs6, (30 * SZREG + MCONTEXT_FPREGS)(v0)
++	l.d	fs7, (31 * SZREG + MCONTEXT_FPREGS)(v0)
++
++# else  /* _MIPS_SIM != _ABI64 */
++	l.d	fs0, (20 * SZREG + MCONTEXT_FPREGS)(v0)
++	l.d	fs1, (22 * SZREG + MCONTEXT_FPREGS)(v0)
++	l.d	fs2, (24 * SZREG + MCONTEXT_FPREGS)(v0)
++	l.d	fs3, (26 * SZREG + MCONTEXT_FPREGS)(v0)
++	l.d	fs4, (28 * SZREG + MCONTEXT_FPREGS)(v0)
++	l.d	fs5, (30 * SZREG + MCONTEXT_FPREGS)(v0)
++
++# endif /* _MIPS_SIM != _ABI64 */
++
++	lw	v1, MCONTEXT_FPC_CSR(v0)
++	ctc1	v1, fcr31
++#endif /* __mips_hard_float */
++
++	/* Note the contents of argument registers will be random
++	   unless makecontext() has been called.  */
++	REG_L	a0, (4 * SZREG + MCONTEXT_GREGS)(v0)
++	REG_L	a1, (5 * SZREG + MCONTEXT_GREGS)(v0)
++	REG_L	a2, (6 * SZREG + MCONTEXT_GREGS)(v0)
++	REG_L	a3, (7 * SZREG + MCONTEXT_GREGS)(v0)
++#if _MIPS_SIM != _ABIO32
++	REG_L	a4, (8 * SZREG + MCONTEXT_GREGS)(v0)
++	REG_L	a5, (9 * SZREG + MCONTEXT_GREGS)(v0)
++	REG_L	a6, (10 * SZREG + MCONTEXT_GREGS)(v0)
++	REG_L	a7, (11 * SZREG + MCONTEXT_GREGS)(v0)
++#endif
++
++	REG_L	s0, (16 * SZREG + MCONTEXT_GREGS)(v0)
++	REG_L	s1, (17 * SZREG + MCONTEXT_GREGS)(v0)
++	REG_L	s2, (18 * SZREG + MCONTEXT_GREGS)(v0)
++	REG_L	s3, (19 * SZREG + MCONTEXT_GREGS)(v0)
++	REG_L	s4, (20 * SZREG + MCONTEXT_GREGS)(v0)
++	REG_L	s5, (21 * SZREG + MCONTEXT_GREGS)(v0)
++	REG_L	s6, (22 * SZREG + MCONTEXT_GREGS)(v0)
++	REG_L	s7, (23 * SZREG + MCONTEXT_GREGS)(v0)
++#if ! defined (__PIC__) || _MIPS_SIM != _ABIO32
++	REG_L	gp, (28 * SZREG + MCONTEXT_GREGS)(v0)
++#endif
++	REG_L	sp, (29 * SZREG + MCONTEXT_GREGS)(v0)
++	REG_L	fp, (30 * SZREG + MCONTEXT_GREGS)(v0)
++	REG_L	ra, (31 * SZREG + MCONTEXT_GREGS)(v0)
++	REG_L	t9, MCONTEXT_PC(v0)
++
++	move	v0, zero
++	jr	t9
++
++99:
++#ifdef __PIC__
++	PTR_LA	t9, JUMPTARGET (__syscall_error)
++	RESTORE_GP64
++	PTR_ADDIU sp, FRAMESZ
++	jr	t9
++
++#else  /* ! __PIC__ */
++
++	j	JUMPTARGET (__syscall_error)
++#endif /* ! __PIC__ */
++PSEUDO_END (__swapcontext)
++
++weak_alias (__swapcontext, swapcontext)
+diff --git a/libc/sysdeps/linux/mips/ucontext_i.sym b/libc/sysdeps/linux/mips/ucontext_i.sym
+new file mode 100644
+index 0000000..f14b886
+--- /dev/null
++++ b/libc/sysdeps/linux/mips/ucontext_i.sym
+@@ -0,0 +1,52 @@
++#include <inttypes.h>
++#include <signal.h>
++#include <stddef.h>
++#include <sys/ucontext.h>
++
++#include <kernel_rt_sigframe.h>
++
++-- Constants used by the rt_sigprocmask call.
++
++SIG_BLOCK
++SIG_SETMASK
++
++_NSIG8				(_NSIG / 8)
++
++-- Offsets of the fields in the kernel rt_sigframe_t structure.
++#define rt_sigframe(member)	offsetof (kernel_rt_sigframe_t, member)
++
++RT_SIGFRAME_UCONTEXT		rt_sigframe (rs_uc)
++
++RT_SIGFRAME_SIZE		sizeof (kernel_rt_sigframe_t)
++
++-- Offsets of the fields in the ucontext_t structure.
++#define ucontext(member)	offsetof (ucontext_t, member)
++#define stack(member)		ucontext (uc_stack.member)
++#define mcontext(member)	ucontext (uc_mcontext.member)
++
++UCONTEXT_FLAGS			ucontext (uc_flags)
++UCONTEXT_LINK			ucontext (uc_link)
++UCONTEXT_STACK			ucontext (uc_stack)
++UCONTEXT_MCONTEXT		ucontext (uc_mcontext)
++UCONTEXT_SIGMASK		ucontext (uc_sigmask)
++
++STACK_SP			stack (ss_sp)
++STACK_SIZE			stack (ss_size)
++STACK_FLAGS			stack (ss_flags)
++
++MCONTEXT_GREGS			mcontext (gregs)
++MCONTEXT_FPREGS			mcontext (fpregs)
++MCONTEXT_MDHI			mcontext (mdhi)
++MCONTEXT_HI1			mcontext (hi1)
++MCONTEXT_HI2			mcontext (hi2)
++MCONTEXT_HI3			mcontext (hi3)
++MCONTEXT_MDLO			mcontext (mdlo)
++MCONTEXT_LO1			mcontext (lo1)
++MCONTEXT_LO2			mcontext (lo2)
++MCONTEXT_LO3			mcontext (lo3)
++MCONTEXT_PC			mcontext (pc)
++MCONTEXT_FPC_CSR		mcontext (fpc_csr)
++MCONTEXT_USED_MATH		mcontext (used_math)
++MCONTEXT_DSP			mcontext (dsp)
++
++UCONTEXT_SIZE			sizeof (ucontext_t)
+diff --git a/libc/sysdeps/linux/x86_64/Makefile.arch b/libc/sysdeps/linux/x86_64/Makefile.arch
+index 7491d92..93b8259 100644
+--- a/libc/sysdeps/linux/x86_64/Makefile.arch
++++ b/libc/sysdeps/linux/x86_64/Makefile.arch
+@@ -20,3 +20,8 @@ ifeq ($(UCLIBC_HAS_TLS),y)
+ SSRC += sched_getcpu.S
+ endif
+ endif
++
++ifeq ($(UCLIBC_HAS_CONTEXT_FUNCS),y)
++CSRC += makecontext.c
++SSRC += setcontext.S getcontext.S swapcontext.S __start_context.S
++endif
+diff --git a/libc/sysdeps/linux/x86_64/__start_context.S b/libc/sysdeps/linux/x86_64/__start_context.S
+new file mode 100644
+index 0000000..9f2ee23
+--- /dev/null
++++ b/libc/sysdeps/linux/x86_64/__start_context.S
+@@ -0,0 +1,49 @@
++/* Copyright (C) 2002-2012 Free Software Foundation, Inc.
++   This file is part of the GNU C Library.
++   Contributed by Andreas Jaeger <aj@suse.de>, 2002.
++
++   The GNU C Library is free software; you can redistribute it and/or
++   modify it under the terms of the GNU Lesser General Public
++   License as published by the Free Software Foundation; either
++   version 2.1 of the License, or (at your option) any later version.
++
++   The GNU C Library is distributed in the hope that it will be useful,
++   but WITHOUT ANY WARRANTY; without even the implied warranty of
++   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
++   Lesser General Public License for more details.
++
++   You should have received a copy of the GNU Lesser General Public
++   License along with the GNU C Library; if not, see
++   <http://www.gnu.org/licenses/>.  */
++
++#include <sysdep.h>
++
++/* This is the helper code which gets called if a function which is
++   registered with 'makecontext' returns.  In this case we have to
++   install the context listed in the uc_link element of the context
++   'makecontext' manipulated at the time of the 'makecontext' call.
++   If the pointer is NULL the process must terminate.  */
++
++
++ENTRY(__start_context)
++	/* This removes the parameters passed to the function given to
++	   'makecontext' from the stack.  RBX contains the address
++	   on the stack pointer for the next context.  */
++	movq	%rbx, %rsp
++
++	popq	%rdi			/* This is the next context.  */
++	cfi_adjust_cfa_offset(-8)
++	testq	%rdi, %rdi
++	je	2f			/* If it is zero exit.  */
++
++	call	JUMPTARGET(__setcontext)
++	/* If this returns (which can happen if the syscall fails) we'll
++	   exit the program with the return error value (-1).  */
++	movq	%rax,%rdi
++
++2:
++	call	HIDDEN_JUMPTARGET(exit)
++	/* The 'exit' call should never return.  In case it does cause
++	   the process to terminate.  */
++	hlt
++END(__start_context)
+diff --git a/libc/sysdeps/linux/x86_64/getcontext.S b/libc/sysdeps/linux/x86_64/getcontext.S
+new file mode 100644
+index 0000000..dcebc4f
+--- /dev/null
++++ b/libc/sysdeps/linux/x86_64/getcontext.S
+@@ -0,0 +1,88 @@
++/* Save current context.
++   Copyright (C) 2002-2012 Free Software Foundation, Inc.
++   This file is part of the GNU C Library.
++   Contributed by Andreas Jaeger <aj@suse.de>, 2002.
++
++   The GNU C Library is free software; you can redistribute it and/or
++   modify it under the terms of the GNU Lesser General Public
++   License as published by the Free Software Foundation; either
++   version 2.1 of the License, or (at your option) any later version.
++
++   The GNU C Library is distributed in the hope that it will be useful,
++   but WITHOUT ANY WARRANTY; without even the implied warranty of
++   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
++   Lesser General Public License for more details.
++
++   You should have received a copy of the GNU Lesser General Public
++   License along with the GNU C Library; if not, see
++   <http://www.gnu.org/licenses/>.  */
++
++#include <sysdep.h>
++
++#include "ucontext_i.h"
++
++/*  int __getcontext (ucontext_t *ucp)
++
++  Saves the machine context in UCP such that when it is activated,
++  it appears as if __getcontext() returned again.
++
++  This implementation is intended to be used for *synchronous* context
++  switches only.  Therefore, it does not have to save anything
++  other than the PRESERVED state.  */
++
++
++ENTRY(__getcontext)
++	/* Save the preserved registers, the registers used for passing
++	   args, and the return address.  */
++	movq	%rbx, oRBX(%rdi)
++	movq	%rbp, oRBP(%rdi)
++	movq	%r12, oR12(%rdi)
++	movq	%r13, oR13(%rdi)
++	movq	%r14, oR14(%rdi)
++	movq	%r15, oR15(%rdi)
++
++	movq	%rdi, oRDI(%rdi)
++	movq	%rsi, oRSI(%rdi)
++	movq	%rdx, oRDX(%rdi)
++	movq	%rcx, oRCX(%rdi)
++	movq	%r8, oR8(%rdi)
++	movq	%r9, oR9(%rdi)
++
++	movq	(%rsp), %rcx
++	movq	%rcx, oRIP(%rdi)
++	leaq	8(%rsp), %rcx		/* Exclude the return address.  */
++	movq	%rcx, oRSP(%rdi)
++
++	/* We have separate floating-point register content memory on the
++	   stack.  We use the __fpregs_mem block in the context.  Set the
++	   links up correctly.  */
++
++	leaq	oFPREGSMEM(%rdi), %rcx
++	movq	%rcx, oFPREGS(%rdi)
++	/* Save the floating-point environment.  */
++	fnstenv	(%rcx)
++	fldenv	(%rcx)
++	stmxcsr oMXCSR(%rdi)
++
++	/* Save the current signal mask with
++	   rt_sigprocmask (SIG_BLOCK, NULL, set,_NSIG/8).  */
++	leaq	oSIGMASK(%rdi), %rdx
++	xorl	%esi,%esi
++#if SIG_BLOCK == 0
++	xorl	%edi, %edi
++#else
++	movl	$SIG_BLOCK, %edi
++#endif
++	movl	$_NSIG8,%r10d
++	movl	$__NR_rt_sigprocmask, %eax
++	syscall
++	cmpq	$-4095, %rax		/* Check %rax for error.  */
++	jae	SYSCALL_ERROR_LABEL	/* Jump to error handler if error.  */
++
++	/* All done, return 0 for success.  */
++	xorl	%eax, %eax
++L(pseudo_end):
++	ret
++PSEUDO_END(__getcontext)
++
++weak_alias (__getcontext, getcontext)
+diff --git a/libc/sysdeps/linux/x86_64/makecontext.c b/libc/sysdeps/linux/x86_64/makecontext.c
+new file mode 100644
+index 0000000..5473031
+--- /dev/null
++++ b/libc/sysdeps/linux/x86_64/makecontext.c
+@@ -0,0 +1,121 @@
++/* Create new context.
++   Copyright (C) 2002, 2004, 2005, 2008 Free Software Foundation, Inc.
++   This file is part of the GNU C Library.
++   Contributed by Andreas Jaeger <aj@suse.de>, 2002.
++
++   The GNU C Library is free software; you can redistribute it and/or
++   modify it under the terms of the GNU Lesser General Public
++   License as published by the Free Software Foundation; either
++   version 2.1 of the License, or (at your option) any later version.
++
++   The GNU C Library is distributed in the hope that it will be useful,
++   but WITHOUT ANY WARRANTY; without even the implied warranty of
++   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
++   Lesser General Public License for more details.
++
++   You should have received a copy of the GNU Lesser General Public
++   License along with the GNU C Library; if not, see
++   <http://www.gnu.org/licenses/>.  */
++
++#include <sysdep.h>
++#include <stdarg.h>
++#include <stdint.h>
++#include <ucontext.h>
++
++#include "ucontext_i.h"
++
++/* This implementation can handle any ARGC value but only
++   normal integer parameters.
++   makecontext sets up a stack and the registers for the
++   user context. The stack looks like this:
++               +-----------------------+
++               | next context          |
++               +-----------------------+
++               | parameter 7-n         |
++	       +-----------------------+
++	       | trampoline address    |
++    %rsp ->    +-----------------------+
++
++   The registers are set up like this:
++     %rdi,%rsi,%rdx,%rcx,%r8,%r9: parameter 1 to 6
++     %rbx   : address of next context
++     %rsp   : stack pointer.
++*/
++
++/* XXX: This implementation currently only handles integer arguments.
++   To handle long int and pointer arguments the va_arg arguments needs
++   to be changed to long and also the stdlib/tst-setcontext.c file needs
++   to be changed to pass long arguments to makecontext.  */
++
++
++void
++__makecontext (ucontext_t *ucp, void (*func) (void), int argc, ...)
++{
++  extern void __start_context (void);
++  greg_t *sp;
++  unsigned int idx_uc_link;
++  va_list ap;
++  int i;
++
++  /* Generate room on stack for parameter if needed and uc_link.  */
++  sp = (greg_t *) ((uintptr_t) ucp->uc_stack.ss_sp
++		   + ucp->uc_stack.ss_size);
++  sp -= (argc > 6 ? argc - 6 : 0) + 1;
++  /* Align stack and make space for trampoline address.  */
++  sp = (greg_t *) ((((uintptr_t) sp) & -16L) - 8);
++
++  idx_uc_link = (argc > 6 ? argc - 6 : 0) + 1;
++
++  /* Setup context ucp.  */
++  /* Address to jump to.  */
++  ucp->uc_mcontext.gregs[REG_RIP] = (uintptr_t) func;
++  /* Setup rbx.*/
++  ucp->uc_mcontext.gregs[REG_RBX] = (uintptr_t) &sp[idx_uc_link];
++  ucp->uc_mcontext.gregs[REG_RSP] = (uintptr_t) sp;
++
++  /* Setup stack.  */
++  sp[0] = (uintptr_t) &__start_context;
++  sp[idx_uc_link] = (uintptr_t) ucp->uc_link;
++
++  va_start (ap, argc);
++  /* Handle arguments.
++
++     The standard says the parameters must all be int values.  This is
++     an historic accident and would be done differently today.  For
++     x86-64 all integer values are passed as 64-bit values and
++     therefore extending the API to copy 64-bit values instead of
++     32-bit ints makes sense.  It does not break existing
++     functionality and it does not violate the standard which says
++     that passing non-int values means undefined behavior.  */
++  for (i = 0; i < argc; ++i)
++    switch (i)
++      {
++      case 0:
++	ucp->uc_mcontext.gregs[REG_RDI] = va_arg (ap, greg_t);
++	break;
++      case 1:
++	ucp->uc_mcontext.gregs[REG_RSI] = va_arg (ap, greg_t);
++	break;
++      case 2:
++	ucp->uc_mcontext.gregs[REG_RDX] = va_arg (ap, greg_t);
++	break;
++      case 3:
++	ucp->uc_mcontext.gregs[REG_RCX] = va_arg (ap, greg_t);
++	break;
++      case 4:
++	ucp->uc_mcontext.gregs[REG_R8] = va_arg (ap, greg_t);
++	break;
++      case 5:
++	ucp->uc_mcontext.gregs[REG_R9] = va_arg (ap, greg_t);
++	break;
++      default:
++	/* Put value on stack.  */
++	sp[i - 5] = va_arg (ap, greg_t);
++	break;
++      }
++  va_end (ap);
++
++}
++
++
++weak_alias (__makecontext, makecontext)
+diff --git a/libc/sysdeps/linux/x86_64/setcontext.S b/libc/sysdeps/linux/x86_64/setcontext.S
+new file mode 100644
+index 0000000..561ab9f
+--- /dev/null
++++ b/libc/sysdeps/linux/x86_64/setcontext.S
+@@ -0,0 +1,103 @@
++/* Install given context.
++   Copyright (C) 2002-2012 Free Software Foundation, Inc.
++   This file is part of the GNU C Library.
++   Contributed by Andreas Jaeger <aj@suse.de>, 2002.
++
++   The GNU C Library is free software; you can redistribute it and/or
++   modify it under the terms of the GNU Lesser General Public
++   License as published by the Free Software Foundation; either
++   version 2.1 of the License, or (at your option) any later version.
++
++   The GNU C Library is distributed in the hope that it will be useful,
++   but WITHOUT ANY WARRANTY; without even the implied warranty of
++   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
++   Lesser General Public License for more details.
++
++   You should have received a copy of the GNU Lesser General Public
++   License along with the GNU C Library; if not, see
++   <http://www.gnu.org/licenses/>.  */
++
++#include <sysdep.h>
++
++#include "ucontext_i.h"
++
++
++/*  int __setcontext (const ucontext_t *ucp)
++
++  Restores the machine context in UCP and thereby resumes execution
++  in that context.
++
++  This implementation is intended to be used for *synchronous* context
++  switches only.  Therefore, it does not have to restore anything
++  other than the PRESERVED state.  */
++
++ENTRY(__setcontext)
++	/* Save argument since syscall will destroy it.  */
++	pushq	%rdi
++	cfi_adjust_cfa_offset(8)
++
++	/* Set the signal mask with
++	   rt_sigprocmask (SIG_SETMASK, mask, NULL, _NSIG/8).  */
++	leaq	oSIGMASK(%rdi), %rsi
++	xorl	%edx, %edx
++	movl	$SIG_SETMASK, %edi
++	movl	$_NSIG8,%r10d
++	movl	$__NR_rt_sigprocmask, %eax
++	syscall
++	popq	%rdi			/* Reload %rdi, adjust stack.  */
++	cfi_adjust_cfa_offset(-8)
++	cmpq	$-4095, %rax		/* Check %rax for error.  */
++	jae	SYSCALL_ERROR_LABEL	/* Jump to error handler if error.  */
++
++	/* Restore the floating-point context.  Not the registers, only the
++	   rest.  */
++	movq	oFPREGS(%rdi), %rcx
++	fldenv	(%rcx)
++	ldmxcsr oMXCSR(%rdi)
++
++
++	/* Load the new stack pointer, the preserved registers and
++	   registers used for passing args.  */
++	cfi_def_cfa(%rdi, 0)
++	cfi_offset(%rbx,oRBX)
++	cfi_offset(%rbp,oRBP)
++	cfi_offset(%r12,oR12)
++	cfi_offset(%r13,oR13)
++	cfi_offset(%r14,oR14)
++	cfi_offset(%r15,oR15)
++	cfi_offset(%rsp,oRSP)
++	cfi_offset(%rip,oRIP)
++
++	movq	oRSP(%rdi), %rsp
++	movq	oRBX(%rdi), %rbx
++	movq	oRBP(%rdi), %rbp
++	movq	oR12(%rdi), %r12
++	movq	oR13(%rdi), %r13
++	movq	oR14(%rdi), %r14
++	movq	oR15(%rdi), %r15
++
++	/* The following ret should return to the address set with
++	getcontext.  Therefore push the address on the stack.  */
++	movq	oRIP(%rdi), %rcx
++	pushq	%rcx
++
++	movq	oRSI(%rdi), %rsi
++	movq	oRDX(%rdi), %rdx
++	movq	oRCX(%rdi), %rcx
++	movq	oR8(%rdi), %r8
++	movq	oR9(%rdi), %r9
++
++	/* Setup finally  %rdi.  */
++	movq	oRDI(%rdi), %rdi
++
++	/* End FDE here, we fall into another context.  */
++	cfi_endproc
++	cfi_startproc
++
++	/* Clear rax to indicate success.  */
++	xorl	%eax, %eax
++L(pseudo_end):
++	ret
++PSEUDO_END(__setcontext)
++
++weak_alias (__setcontext, setcontext)
+diff --git a/libc/sysdeps/linux/x86_64/swapcontext.S b/libc/sysdeps/linux/x86_64/swapcontext.S
+new file mode 100644
+index 0000000..6d2ebb8
+--- /dev/null
++++ b/libc/sysdeps/linux/x86_64/swapcontext.S
+@@ -0,0 +1,121 @@
++/* Save current context and install the given one.
++   Copyright (C) 2002-2012 Free Software Foundation, Inc.
++   This file is part of the GNU C Library.
++   Contributed by Andreas Jaeger <aj@suse.de>, 2002.
++
++   The GNU C Library is free software; you can redistribute it and/or
++   modify it under the terms of the GNU Lesser General Public
++   License as published by the Free Software Foundation; either
++   version 2.1 of the License, or (at your option) any later version.
++
++   The GNU C Library is distributed in the hope that it will be useful,
++   but WITHOUT ANY WARRANTY; without even the implied warranty of
++   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
++   Lesser General Public License for more details.
++
++   You should have received a copy of the GNU Lesser General Public
++   License along with the GNU C Library; if not, see
++   <http://www.gnu.org/licenses/>.  */
++
++#include <sysdep.h>
++
++#include "ucontext_i.h"
++
++
++/* int __swapcontext (ucontext_t *oucp, const ucontext_t *ucp);
++
++  Saves the machine context in oucp such that when it is activated,
++  it appears as if __swapcontextt() returned again, restores the
++  machine context in ucp and thereby resumes execution in that
++  context.
++
++  This implementation is intended to be used for *synchronous* context
++  switches only.  Therefore, it does not have to save anything
++  other than the PRESERVED state.  */
++
++ENTRY(__swapcontext)
++	/* Save the preserved registers, the registers used for passing args,
++	   and the return address.  */
++	movq	%rbx, oRBX(%rdi)
++	movq	%rbp, oRBP(%rdi)
++	movq	%r12, oR12(%rdi)
++	movq	%r13, oR13(%rdi)
++	movq	%r14, oR14(%rdi)
++	movq	%r15, oR15(%rdi)
++
++	movq	%rdi, oRDI(%rdi)
++	movq	%rsi, oRSI(%rdi)
++	movq	%rdx, oRDX(%rdi)
++	movq	%rcx, oRCX(%rdi)
++	movq	%r8, oR8(%rdi)
++	movq	%r9, oR9(%rdi)
++
++	movq	(%rsp), %rcx
++	movq	%rcx, oRIP(%rdi)
++	leaq	8(%rsp), %rcx		/* Exclude the return address.  */
++	movq	%rcx, oRSP(%rdi)
++
++	/* We have separate floating-point register content memory on the
++	   stack.  We use the __fpregs_mem block in the context.  Set the
++	   links up correctly.  */
++	leaq	oFPREGSMEM(%rdi), %rcx
++	movq	%rcx, oFPREGS(%rdi)
++	/* Save the floating-point environment.  */
++	fnstenv	(%rcx)
++	stmxcsr oMXCSR(%rdi)
++
++
++	/* The syscall destroys some registers, save them.  */
++	movq	%rsi, %r12
++
++	/* Save the current signal mask and install the new one with
++	   rt_sigprocmask (SIG_BLOCK, newset, oldset,_NSIG/8).  */
++	leaq	oSIGMASK(%rdi), %rdx
++	leaq	oSIGMASK(%rsi), %rsi
++	movl	$SIG_SETMASK, %edi
++	movl	$_NSIG8,%r10d
++	movl	$__NR_rt_sigprocmask, %eax
++	syscall
++	cmpq	$-4095, %rax		/* Check %rax for error.  */
++	jae	SYSCALL_ERROR_LABEL	/* Jump to error handler if error.  */
++
++	/* Restore destroyed registers.  */
++	movq	%r12, %rsi
++
++	/* Restore the floating-point context.  Not the registers, only the
++	   rest.  */
++	movq	oFPREGS(%rsi), %rcx
++	fldenv	(%rcx)
++	ldmxcsr oMXCSR(%rsi)
++
++	/* Load the new stack pointer and the preserved registers.  */
++	movq	oRSP(%rsi), %rsp
++	movq	oRBX(%rsi), %rbx
++	movq	oRBP(%rsi), %rbp
++	movq	oR12(%rsi), %r12
++	movq	oR13(%rsi), %r13
++	movq	oR14(%rsi), %r14
++	movq	oR15(%rsi), %r15
++
++	/* The following ret should return to the address set with
++	getcontext.  Therefore push the address on the stack.  */
++	movq	oRIP(%rsi), %rcx
++	pushq	%rcx
++
++	/* Setup registers used for passing args.  */
++	movq	oRDI(%rsi), %rdi
++	movq	oRDX(%rsi), %rdx
++	movq	oRCX(%rsi), %rcx
++	movq	oR8(%rsi), %r8
++	movq	oR9(%rsi), %r9
++
++	/* Setup finally  %rsi.  */
++	movq	oRSI(%rsi), %rsi
++
++	/* Clear rax to indicate success.  */
++	xorl	%eax, %eax
++L(pseudo_end):
++	ret
++PSEUDO_END(__swapcontext)
++
++weak_alias (__swapcontext, swapcontext)
+diff --git a/libc/sysdeps/linux/x86_64/ucontext_i.sym b/libc/sysdeps/linux/x86_64/ucontext_i.sym
+new file mode 100644
+index 0000000..af3e0e5
+--- /dev/null
++++ b/libc/sysdeps/linux/x86_64/ucontext_i.sym
+@@ -0,0 +1,37 @@
++#include <stddef.h>
++#include <signal.h>
++#include <sys/ucontext.h>
++
++--
++
++SIG_BLOCK
++SIG_SETMASK
++
++_NSIG8		(_NSIG / 8)
++
++#define ucontext(member)	offsetof (ucontext_t, member)
++#define mcontext(member)	ucontext (uc_mcontext.member)
++#define mreg(reg)		mcontext (gregs[REG_##reg])
++
++oRBP		mreg (RBP)
++oRSP		mreg (RSP)
++oRBX		mreg (RBX)
++oR8		mreg (R8)
++oR9		mreg (R9)
++oR10		mreg (R10)
++oR11		mreg (R11)
++oR12		mreg (R12)
++oR13		mreg (R13)
++oR14		mreg (R14)
++oR15		mreg (R15)
++oRDI		mreg (RDI)
++oRSI		mreg (RSI)
++oRDX		mreg (RDX)
++oRAX		mreg (RAX)
++oRCX		mreg (RCX)
++oRIP		mreg (RIP)
++oEFL		mreg (EFL)
++oFPREGS		mcontext (fpregs)
++oSIGMASK	ucontext (uc_sigmask)
++oFPREGSMEM	ucontext (__fpregs_mem)
++oMXCSR		ucontext (__fpregs_mem.mxcsr)
+diff --git a/libpthread/nptl/sysdeps/Makefile.commonarch b/libpthread/nptl/sysdeps/Makefile.commonarch
+index 0c19216..8f5d61d 100644
+--- a/libpthread/nptl/sysdeps/Makefile.commonarch
++++ b/libpthread/nptl/sysdeps/Makefile.commonarch
+@@ -47,9 +47,8 @@ $(libpthread_arch_OUT)/gen_tcb-offsets.c: $(libpthread_arch_DIR)/tcb-offsets.sym
+ $(libpthread_arch_OUT)/gen_tcb-offsets.s: $(libpthread_arch_OUT)/gen_tcb-offsets.c | headers
+ 	$(compile.c)
+ libpthread-generated-y += $(libpthread_arch_OUT)/gen_tcb-offsets.s
+-PTHREAD_TCB_OFFSET_MANGLE ?= -n "s/^.*@@@name@@@\([^@]*\)@@@value@@@[^0-9Xxa-fA-F-]*\([0-9Xxa-fA-F-][0-9Xxa-fA-F-]*\).*@@@end@@@.*\$$/\#define \1 \2/p"
+ $(libpthread_arch_OUT)/tcb-offsets.h: $(libpthread_arch_OUT)/gen_tcb-offsets.s
+-	$(do_sed) $(PTHREAD_TCB_OFFSET_MANGLE) $< > $@
++	$(do_sed) $(PTHREAD_GENERATE_MANGLE) $< > $@
+ 	@if test ! -s $@ ; then rm -f $@ ; false ; fi
+ 
+ pregen-headers-$(UCLIBC_HAS_THREADS_NATIVE) += $(libpthread_arch_OUT)/tcb-offsets.h
+diff --git a/libpthread/nptl/sysdeps/unix/sysv/linux/Makefile.commonarch b/libpthread/nptl/sysdeps/unix/sysv/linux/Makefile.commonarch
+index 477fb1a..3372214 100644
+--- a/libpthread/nptl/sysdeps/unix/sysv/linux/Makefile.commonarch
++++ b/libpthread/nptl/sysdeps/unix/sysv/linux/Makefile.commonarch
+@@ -177,8 +177,6 @@ CFLAGS-gen_pthread-pi-defines.c = -S
+ CFLAGS-gen_structsem.c = -S
+ CFLAGS-gen_unwindbuf.c = -S
+ 
+-PTHREAD_GENERATE_MANGLE ?= -n "s/^.*@@@name@@@\([^@]*\)@@@value@@@[^0-9Xxa-fA-F-]*\([0-9Xxa-fA-F-][0-9Xxa-fA-F-]*\).*@@@end@@@.*\$$/\#define \1 \2/p"
+-
+ PTHREAD_LINUX_SYM   := $(notdir $(wildcard $(libpthread_linux_DIR)/*.sym))
+ PTHREAD_LINUX_SYM_C := $(addprefix $(libpthread_linux_OUT)/gen_,$(PTHREAD_LINUX_SYM:.sym=.c))
+ PTHREAD_LINUX_SYM_S := $(PTHREAD_LINUX_SYM_C:.c=.s)
+-- 
+1.8.4
+
diff --git a/main/libc0.9.32/0001-libc-sysdeps-get-make-set-swap-context-for-i386.patch b/main/libc0.9.32/0001-libc-sysdeps-get-make-set-swap-context-for-i386.patch
deleted file mode 100644
index 54038d59f4..0000000000
--- a/main/libc0.9.32/0001-libc-sysdeps-get-make-set-swap-context-for-i386.patch
+++ /dev/null
@@ -1,562 +0,0 @@
-From cb079bffc0b93c75f2118f101add4d7d2259440b Mon Sep 17 00:00:00 2001
-From: Natanael Copa <ncopa@alpinelinux.org>
-Date: Mon, 29 Oct 2012 13:24:05 +0000
-Subject: [PATCH] libc/sysdeps: {get,make,set,swap}context for i386
-
-imported from glibc
-
-Signed-off-by: Natanael Copa <ncopa@alpinelinux.org>
-
-Conflicts:
-	libc/sysdeps/linux/i386/Makefile.arch
----
- .gitignore                             |   1 +
- libc/sysdeps/linux/i386/Makefile.arch  |  36 ++++++++++
- libc/sysdeps/linux/i386/getcontext.S   |  84 ++++++++++++++++++++++
- libc/sysdeps/linux/i386/makecontext.S  | 123 +++++++++++++++++++++++++++++++++
- libc/sysdeps/linux/i386/setcontext.S   |  96 +++++++++++++++++++++++++
- libc/sysdeps/linux/i386/swapcontext.S  | 110 +++++++++++++++++++++++++++++
- libc/sysdeps/linux/i386/ucontext_i.sym |  30 ++++++++
- 7 files changed, 480 insertions(+)
- create mode 100644 libc/sysdeps/linux/i386/getcontext.S
- create mode 100644 libc/sysdeps/linux/i386/makecontext.S
- create mode 100644 libc/sysdeps/linux/i386/setcontext.S
- create mode 100644 libc/sysdeps/linux/i386/swapcontext.S
- create mode 100644 libc/sysdeps/linux/i386/ucontext_i.sym
-
-diff --git a/.gitignore b/.gitignore
-index c2603a0..a980db6 100644
---- a/.gitignore
-+++ b/.gitignore
-@@ -18,6 +18,7 @@ install_dir/
- .*.dep
- /*.log
- cscope.*
-+ucontext_i.[chs]
- 
- #
- # Debugging files
-diff --git a/libc/sysdeps/linux/i386/Makefile.arch b/libc/sysdeps/linux/i386/Makefile.arch
-index 966f8b5..64f8110 100644
---- a/libc/sysdeps/linux/i386/Makefile.arch
-+++ b/libc/sysdeps/linux/i386/Makefile.arch
-@@ -11,7 +11,43 @@ SSRC := \
- 	__longjmp.S setjmp.S bsd-setjmp.S bsd-_setjmp.S \
- 	sync_file_range.S syscall.S mmap.S mmap64.S posix_fadvise64.S
- 
-+LIBC_ARCH_DIR := $(top_srcdir)/libc/sysdeps/linux/$(TARGET_ARCH)
-+LIBC_ARCH_OUT := $(top_builddir)/libc/sysdeps/linux/$(TARGET_ARCH)
- 
- ifneq ($(UCLIBC_HAS_THREADS_NATIVE),y)
- SSRC += vfork.S clone.S
- endif
-+
-+ifeq ($(UCLIBC_SUSV4_LEGACY),y)
-+SSRC += makecontext.S setcontext.S getcontext.S swapcontext.S
-+
-+ASFLAGS-setcontext.S   := -D_LIBC_REENTRANT
-+ASFLAGS-getcontext.S   := -D_LIBC_REENTRANT
-+ASFLAGS-swapcontext.S  := -D_LIBC_REENTRANT
-+
-+ifeq ($(UCLIBC_HAS_THREADS_NATIVE),y)
-+#Needed to use the correct SYSCALL_ERROR_HANDLER
-+ASFLAGS-setcontext.S   += -DUSE___THREAD
-+ASFLAGS-getcontext.S   += -DUSE___THREAD
-+ASFLAGS-swapcontext.S  += -DUSE___THREAD
-+endif
-+
-+pregen-headers-$(UCLIBC_SUSV4_LEGACY) += $(LIBC_ARCH_OUT)/ucontext_i.h
-+
-+headers_clean-y += libc_arch_headers_clean
-+
-+CFLAGS-ucontext_i.c = -S
-+
-+$(LIBC_ARCH_OUT)/ucontext_i.c: $(LIBC_ARCH_DIR)/ucontext_i.sym
-+	$(do_awk) $(top_srcdir)extra/scripts/gen-as-const.awk $< > $@
-+
-+$(LIBC_ARCH_OUT)/ucontext_i.s: $(LIBC_ARCH_OUT)/ucontext_i.c
-+	$(compile.c)
-+
-+$(LIBC_ARCH_OUT)/ucontext_i.h: $(LIBC_ARCH_OUT)/ucontext_i.s
-+	$(do_sed) -n "s/^.*@@@name@@@\([^@]*\)@@@value@@@[^0-9Xxa-fA-F-]*\([0-9Xxa-fA-F-][0-9Xxa-fA-F-]*\).*@@@end@@@.*$\/#define \1 \2/p" $< > $@
-+
-+libc_arch_headers_clean:
-+	$(do_rm) $(addprefix $(LIBC_ARCH_OUT)/ucontext_i., c h s)
-+endif
-+
-diff --git a/libc/sysdeps/linux/i386/getcontext.S b/libc/sysdeps/linux/i386/getcontext.S
-new file mode 100644
-index 0000000..3221b59
---- /dev/null
-+++ b/libc/sysdeps/linux/i386/getcontext.S
-@@ -0,0 +1,84 @@
-+/* Save current context.
-+   Copyright (C) 2001-2012 Free Software Foundation, Inc.
-+   This file is part of the GNU C Library.
-+   Contributed by Ulrich Drepper <drepper@redhat.com>, 2001.
-+
-+   The GNU C Library is free software; you can redistribute it and/or
-+   modify it under the terms of the GNU Lesser General Public
-+   License as published by the Free Software Foundation; either
-+   version 2.1 of the License, or (at your option) any later version.
-+
-+   The GNU C Library is distributed in the hope that it will be useful,
-+   but WITHOUT ANY WARRANTY; without even the implied warranty of
-+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-+   Lesser General Public License for more details.
-+
-+   You should have received a copy of the GNU Lesser General Public
-+   License along with the GNU C Library; if not, see
-+   <http://www.gnu.org/licenses/>.  */
-+
-+#include <sysdep.h>
-+
-+#include "ucontext_i.h"
-+
-+
-+ENTRY(__getcontext)
-+	/* Load address of the context data structure.  */
-+	movl	4(%esp), %eax
-+
-+	/* Return value of getcontext.  EAX is the only register whose
-+	   value is not preserved.  */
-+	movl	$0, oEAX(%eax)
-+
-+	/* Save the 32-bit register values and the return address.  */
-+	movl	%ecx, oECX(%eax)
-+	movl	%edx, oEDX(%eax)
-+	movl	%edi, oEDI(%eax)
-+	movl	%esi, oESI(%eax)
-+	movl	%ebp, oEBP(%eax)
-+	movl	(%esp), %ecx
-+	movl	%ecx, oEIP(%eax)
-+	leal	4(%esp), %ecx		/* Exclude the return address.  */
-+	movl	%ecx, oESP(%eax)
-+	movl	%ebx, oEBX(%eax)
-+
-+	/* Save the FS segment register.  We don't touch the GS register
-+	   since it is used for threads.  */
-+	xorl	%edx, %edx
-+	movw	%fs, %dx
-+	movl	%edx, oFS(%eax)
-+
-+	/* We have separate floating-point register content memory on the
-+	   stack.  We use the __fpregs_mem block in the context.  Set the
-+	   links up correctly.  */
-+	leal	oFPREGSMEM(%eax), %ecx
-+	movl	%ecx, oFPREGS(%eax)
-+	/* Save the floating-point context.  */
-+	fnstenv	(%ecx)
-+	/* And load it right back since the processor changes the mask.
-+	   Intel thought this opcode to be used in interrupt handlers which
-+	   would block all exceptions.  */
-+	fldenv	(%ecx)
-+
-+	/* Save the current signal mask.  */
-+	pushl	%ebx
-+	cfi_adjust_cfa_offset (4)
-+	cfi_rel_offset (ebx, 0)
-+	leal	oSIGMASK(%eax), %edx
-+	xorl	%ecx, %ecx
-+	movl	$SIG_BLOCK, %ebx
-+	movl	$__NR_sigprocmask, %eax
-+	ENTER_KERNEL
-+	popl	%ebx
-+	cfi_adjust_cfa_offset (-4)
-+	cfi_restore (ebx)
-+	cmpl	$-4095, %eax		/* Check %eax for error.  */
-+	jae	SYSCALL_ERROR_LABEL	/* Jump to error handler if error.  */
-+
-+	/* All done, return 0 for success.  */
-+	xorl	%eax, %eax
-+L(pseudo_end):
-+	ret
-+PSEUDO_END(__getcontext)
-+
-+weak_alias (__getcontext, getcontext)
-diff --git a/libc/sysdeps/linux/i386/makecontext.S b/libc/sysdeps/linux/i386/makecontext.S
-new file mode 100644
-index 0000000..d12799d
---- /dev/null
-+++ b/libc/sysdeps/linux/i386/makecontext.S
-@@ -0,0 +1,123 @@
-+/* Create new context.
-+   Copyright (C) 2001,2002,2005,2007,2008,2009 Free Software Foundation, Inc.
-+   This file is part of the GNU C Library.
-+   Contributed by Ulrich Drepper <drepper@redhat.com>, 2001.
-+
-+   The GNU C Library is free software; you can redistribute it and/or
-+   modify it under the terms of the GNU Lesser General Public
-+   License as published by the Free Software Foundation; either
-+   version 2.1 of the License, or (at your option) any later version.
-+
-+   The GNU C Library is distributed in the hope that it will be useful,
-+   but WITHOUT ANY WARRANTY; without even the implied warranty of
-+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-+   Lesser General Public License for more details.
-+
-+   You should have received a copy of the GNU Lesser General Public
-+   License along with the GNU C Library; if not, see
-+   <http://www.gnu.org/licenses/>.  */
-+
-+#include <sysdep.h>
-+
-+#include "ucontext_i.h"
-+
-+
-+ENTRY(__makecontext)
-+	movl	4(%esp), %eax
-+
-+	/* Load the address of the function we are supposed to run.  */
-+	movl	8(%esp), %ecx
-+
-+	/* Compute the address of the stack.  The information comes from
-+	   to us_stack element.  */
-+	movl	oSS_SP(%eax), %edx
-+	movl	%ecx, oEIP(%eax)
-+	addl	oSS_SIZE(%eax), %edx
-+
-+	/* Remember the number of parameters for the exit handler since
-+	   it has to remove them.  We store the number in the EBX register
-+	   which the function we will call must preserve.  */
-+	movl	12(%esp), %ecx
-+	movl	%ecx, oEBX(%eax)
-+
-+	/* Make room on the new stack for the parameters.
-+	   Room for the arguments, return address (== L(exitcode)) and
-+	   oLINK pointer is needed.  One of the pointer sizes is subtracted
-+	   after aligning the stack.  */
-+	negl	%ecx
-+	leal	-4(%edx,%ecx,4), %edx
-+	negl	%ecx
-+
-+	/* Align the stack.  */
-+	andl	$0xfffffff0, %edx
-+	subl	$4, %edx
-+
-+	/* Store the future stack pointer.  */
-+	movl	%edx, oESP(%eax)
-+
-+	/* Put the next context on the new stack (from the uc_link
-+	   element).  */
-+	movl	oLINK(%eax), %eax
-+	movl	%eax, 4(%edx,%ecx,4)
-+
-+	/* Copy all the parameters.  */
-+	jecxz	2f
-+1:	movl	12(%esp,%ecx,4), %eax
-+	movl	%eax, (%edx,%ecx,4)
-+	decl	%ecx
-+	jnz	1b
-+2:
-+
-+	/* If the function we call returns we must continue with the
-+	   context which is given in the uc_link element.  To do this
-+	   set the return address for the function the user provides
-+	   to a little bit of helper code which does the magic (see
-+	   below).  */
-+#ifdef __PIC__
-+	call	1f
-+	cfi_adjust_cfa_offset (4)
-+1:	popl	%ecx
-+	cfi_adjust_cfa_offset (-4)
-+	addl	$L(exitcode)-1b, %ecx
-+	movl	%ecx, (%edx)
-+#else
-+	movl	$L(exitcode), (%edx)
-+#endif
-+	/* 'makecontext' returns no value.  */
-+L(pseudo_end):
-+	ret
-+
-+	/* This is the helper code which gets called if a function which
-+	   is registered with 'makecontext' returns.  In this case we
-+	   have to install the context listed in the uc_link element of
-+	   the context 'makecontext' manipulated at the time of the
-+	   'makecontext' call.  If the pointer is NULL the process must
-+	   terminate.  */
-+	cfi_endproc
-+L(exitcode):
-+	/* This removes the parameters passed to the function given to
-+	   'makecontext' from the stack.  EBX contains the number of
-+	   parameters (see above).  */
-+	leal	(%esp,%ebx,4), %esp
-+
-+#ifdef	__PIC__
-+	call	1f
-+1:	popl	%ebx
-+	addl	$_GLOBAL_OFFSET_TABLE_+[.-1b], %ebx
-+#endif
-+	cmpl	$0, (%esp)		/* Check the next context.  */
-+	je	2f			/* If it is zero exit.  */
-+
-+	call	JUMPTARGET(__setcontext)
-+	/* If this returns (which can happen if the syscall fails) we'll
-+	   exit the program with the return error value (-1).  */
-+
-+	movl	%eax, (%esp)
-+2:	call	HIDDEN_JUMPTARGET(exit)
-+	/* The 'exit' call should never return.  In case it does cause
-+	   the process to terminate.  */
-+	hlt
-+	cfi_startproc
-+END(__makecontext)
-+
-+weak_alias (__makecontext, makecontext)
-diff --git a/libc/sysdeps/linux/i386/setcontext.S b/libc/sysdeps/linux/i386/setcontext.S
-new file mode 100644
-index 0000000..ae953cc
---- /dev/null
-+++ b/libc/sysdeps/linux/i386/setcontext.S
-@@ -0,0 +1,96 @@
-+/* Install given context.
-+   Copyright (C) 2001-2012 Free Software Foundation, Inc.
-+   This file is part of the GNU C Library.
-+   Contributed by Ulrich Drepper <drepper@redhat.com>, 2001.
-+
-+   The GNU C Library is free software; you can redistribute it and/or
-+   modify it under the terms of the GNU Lesser General Public
-+   License as published by the Free Software Foundation; either
-+   version 2.1 of the License, or (at your option) any later version.
-+
-+   The GNU C Library is distributed in the hope that it will be useful,
-+   but WITHOUT ANY WARRANTY; without even the implied warranty of
-+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-+   Lesser General Public License for more details.
-+
-+   You should have received a copy of the GNU Lesser General Public
-+   License along with the GNU C Library; if not, see
-+   <http://www.gnu.org/licenses/>.  */
-+
-+#include <sysdep.h>
-+
-+#include "ucontext_i.h"
-+
-+
-+ENTRY(__setcontext)
-+	/* Load address of the context data structure.  */
-+	movl	4(%esp), %eax
-+
-+	/* Get the current signal mask.  Note that we preserve EBX in case
-+	   the system call fails and we return from the function with an
-+	   error.  */
-+	pushl	%ebx
-+	cfi_adjust_cfa_offset (4)
-+	xorl	%edx, %edx
-+	leal	oSIGMASK(%eax), %ecx
-+	movl	$SIG_SETMASK, %ebx
-+	cfi_rel_offset (ebx, 0)
-+	movl	$__NR_sigprocmask, %eax
-+	ENTER_KERNEL
-+	popl	%ebx
-+	cfi_adjust_cfa_offset (-4)
-+	cfi_restore (ebx)
-+	cmpl	$-4095, %eax		/* Check %eax for error.  */
-+	jae	SYSCALL_ERROR_LABEL	/* Jump to error handler if error.  */
-+
-+	/* EAX was modified, reload it.  */
-+	movl	4(%esp), %eax
-+
-+	/* Restore the floating-point context.  Not the registers, only the
-+	   rest.  */
-+	movl	oFPREGS(%eax), %ecx
-+	fldenv	(%ecx)
-+
-+	/* Restore the FS segment register.  We don't touch the GS register
-+	   since it is used for threads.  */
-+	movl	oFS(%eax), %ecx
-+	movw	%cx, %fs
-+
-+	/* Fetch the address to return to.  */
-+	movl	oEIP(%eax), %ecx
-+
-+	/* Load the new stack pointer.  */
-+	cfi_def_cfa (eax, 0)
-+	cfi_offset (edi, oEDI)
-+	cfi_offset (esi, oESI)
-+	cfi_offset (ebp, oEBP)
-+	cfi_offset (ebx, oEBX)
-+	cfi_offset (edx, oEDX)
-+	cfi_offset (ecx, oECX)
-+	movl	oESP(%eax), %esp
-+
-+	/* Push the return address on the new stack so we can return there.  */
-+	pushl	%ecx
-+
-+	/* Load the values of all the 32-bit registers (except ESP).
-+	   Since we are loading from EAX, it must be last.  */
-+	movl	oEDI(%eax), %edi
-+	movl	oESI(%eax), %esi
-+	movl	oEBP(%eax), %ebp
-+	movl	oEBX(%eax), %ebx
-+	movl	oEDX(%eax), %edx
-+	movl	oECX(%eax), %ecx
-+	movl	oEAX(%eax), %eax
-+
-+	/* End FDE here, we fall into another context.  */
-+	cfi_endproc
-+	cfi_startproc
-+
-+	/* The following 'ret' will pop the address of the code and jump
-+	   to it.  */
-+
-+L(pseudo_end):
-+	ret
-+PSEUDO_END(__setcontext)
-+
-+weak_alias (__setcontext, setcontext)
-diff --git a/libc/sysdeps/linux/i386/swapcontext.S b/libc/sysdeps/linux/i386/swapcontext.S
-new file mode 100644
-index 0000000..ee5d0e4
---- /dev/null
-+++ b/libc/sysdeps/linux/i386/swapcontext.S
-@@ -0,0 +1,110 @@
-+/* Save current context and install the given one.
-+   Copyright (C) 2001-2012 Free Software Foundation, Inc.
-+   This file is part of the GNU C Library.
-+   Contributed by Ulrich Drepper <drepper@redhat.com>, 2001.
-+
-+   The GNU C Library is free software; you can redistribute it and/or
-+   modify it under the terms of the GNU Lesser General Public
-+   License as published by the Free Software Foundation; either
-+   version 2.1 of the License, or (at your option) any later version.
-+
-+   The GNU C Library is distributed in the hope that it will be useful,
-+   but WITHOUT ANY WARRANTY; without even the implied warranty of
-+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-+   Lesser General Public License for more details.
-+
-+   You should have received a copy of the GNU Lesser General Public
-+   License along with the GNU C Library; if not, see
-+   <http://www.gnu.org/licenses/>.  */
-+
-+#include <sysdep.h>
-+
-+#include "ucontext_i.h"
-+
-+
-+ENTRY(__swapcontext)
-+	/* Load address of the context data structure we save in.  */
-+	movl	4(%esp), %eax
-+
-+	/* Return value of swapcontext.  EAX is the only register whose
-+	   value is not preserved.  */
-+	movl	$0, oEAX(%eax)
-+
-+	/* Save the 32-bit register values and the return address.  */
-+	movl	%ecx, oECX(%eax)
-+	movl	%edx, oEDX(%eax)
-+	movl	%edi, oEDI(%eax)
-+	movl	%esi, oESI(%eax)
-+	movl	%ebp, oEBP(%eax)
-+	movl	(%esp), %ecx
-+	movl	%ecx, oEIP(%eax)
-+	leal	4(%esp), %ecx
-+	movl	%ecx, oESP(%eax)
-+	movl	%ebx, oEBX(%eax)
-+
-+	/* Save the FS segment register.  */
-+	xorl	%edx, %edx
-+	movw	%fs, %dx
-+	movl	%edx, oFS(%eax)
-+
-+	/* We have separate floating-point register content memory on the
-+	   stack.  We use the __fpregs_mem block in the context.  Set the
-+	   links up correctly.  */
-+	leal	oFPREGSMEM(%eax), %ecx
-+	movl	%ecx, oFPREGS(%eax)
-+	/* Save the floating-point context.  */
-+	fnstenv	(%ecx)
-+
-+	/* Load address of the context data structure we have to load.  */
-+	movl	8(%esp), %ecx
-+
-+	/* Save the current signal mask and install the new one.  */
-+	pushl	%ebx
-+	leal	oSIGMASK(%eax), %edx
-+	leal	oSIGMASK(%ecx), %ecx
-+	movl	$SIG_SETMASK, %ebx
-+	movl	$__NR_sigprocmask, %eax
-+	ENTER_KERNEL
-+	popl	%ebx
-+	cmpl	$-4095, %eax		/* Check %eax for error.  */
-+	jae	SYSCALL_ERROR_LABEL	/* Jump to error handler if error.  */
-+
-+	/* EAX was modified, reload it.  */
-+	movl	8(%esp), %eax
-+
-+	/* Restore the floating-point context.  Not the registers, only the
-+	   rest.  */
-+	movl	oFPREGS(%eax), %ecx
-+	fldenv	(%ecx)
-+
-+	/* Restore the FS segment register.  We don't touch the GS register
-+	   since it is used for threads.  */
-+	movl	oFS(%eax), %edx
-+	movw	%dx, %fs
-+
-+	/* Fetch the address to return to.  */
-+	movl	oEIP(%eax), %ecx
-+
-+	/* Load the new stack pointer.  */
-+	movl	oESP(%eax), %esp
-+
-+	/* Push the return address on the new stack so we can return there.  */
-+	pushl	%ecx
-+
-+	/* Load the values of all the 32-bit registers (except ESP).
-+	   Since we are loading from EAX, it must be last.  */
-+	movl	oEDI(%eax), %edi
-+	movl	oESI(%eax), %esi
-+	movl	oEBP(%eax), %ebp
-+	movl	oEBX(%eax), %ebx
-+	movl	oEDX(%eax), %edx
-+	movl	oECX(%eax), %ecx
-+	movl	oEAX(%eax), %eax
-+
-+	/* The following 'ret' will pop the address of the code and jump
-+	   to it.  */
-+L(pseudo_end):
-+	ret
-+PSEUDO_END(__swapcontext)
-+
-+weak_alias (__swapcontext, swapcontext)
-diff --git a/libc/sysdeps/linux/i386/ucontext_i.sym b/libc/sysdeps/linux/i386/ucontext_i.sym
-new file mode 100644
-index 0000000..b11a550
---- /dev/null
-+++ b/libc/sysdeps/linux/i386/ucontext_i.sym
-@@ -0,0 +1,30 @@
-+#include <stddef.h>
-+#include <signal.h>
-+#include <sys/ucontext.h>
-+
-+--
-+
-+SIG_BLOCK
-+SIG_SETMASK
-+
-+#define ucontext(member)	offsetof (ucontext_t, member)
-+#define mcontext(member)	ucontext (uc_mcontext.member)
-+#define mreg(reg)		mcontext (gregs[REG_##reg])
-+
-+oLINK		ucontext (uc_link)
-+oSS_SP		ucontext (uc_stack.ss_sp)
-+oSS_SIZE	ucontext (uc_stack.ss_size)
-+oGS		mreg (GS)
-+oFS		mreg (FS)
-+oEDI		mreg (EDI)
-+oESI		mreg (ESI)
-+oEBP		mreg (EBP)
-+oESP		mreg (ESP)
-+oEBX		mreg (EBX)
-+oEDX		mreg (EDX)
-+oECX		mreg (ECX)
-+oEAX		mreg (EAX)
-+oEIP		mreg (EIP)
-+oFPREGS		mcontext (fpregs)
-+oSIGMASK	ucontext (uc_sigmask)
-+oFPREGSMEM	ucontext (__fpregs_mem)
--- 
-1.8.0
-
diff --git a/main/libc0.9.32/0002-libc-sysdeps-add-get-make-set-swap-context-for-x86_6.patch b/main/libc0.9.32/0002-libc-sysdeps-add-get-make-set-swap-context-for-x86_6.patch
deleted file mode 100644
index ded1b2e893..0000000000
--- a/main/libc0.9.32/0002-libc-sysdeps-add-get-make-set-swap-context-for-x86_6.patch
+++ /dev/null
@@ -1,633 +0,0 @@
-From f231ba278e7820f5b73cde16f17f227118d9bafc Mon Sep 17 00:00:00 2001
-From: Natanael Copa <ncopa@alpinelinux.org>
-Date: Mon, 29 Oct 2012 14:33:26 +0000
-Subject: [PATCH 2/2] libc/sysdeps: add {get,make,set,swap}context for x86_64
-
----
- libc/sysdeps/linux/x86_64/Makefile.arch     |  39 +++++++++
- libc/sysdeps/linux/x86_64/__start_context.S |  49 +++++++++++
- libc/sysdeps/linux/x86_64/getcontext.S      |  88 ++++++++++++++++++++
- libc/sysdeps/linux/x86_64/makecontext.c     | 121 ++++++++++++++++++++++++++++
- libc/sysdeps/linux/x86_64/setcontext.S      | 103 +++++++++++++++++++++++
- libc/sysdeps/linux/x86_64/swapcontext.S     | 121 ++++++++++++++++++++++++++++
- libc/sysdeps/linux/x86_64/ucontext_i.sym    |  37 +++++++++
- 7 files changed, 558 insertions(+)
- create mode 100644 libc/sysdeps/linux/x86_64/__start_context.S
- create mode 100644 libc/sysdeps/linux/x86_64/getcontext.S
- create mode 100644 libc/sysdeps/linux/x86_64/makecontext.c
- create mode 100644 libc/sysdeps/linux/x86_64/setcontext.S
- create mode 100644 libc/sysdeps/linux/x86_64/swapcontext.S
- create mode 100644 libc/sysdeps/linux/x86_64/ucontext_i.sym
-
-diff --git a/libc/sysdeps/linux/x86_64/Makefile.arch b/libc/sysdeps/linux/x86_64/Makefile.arch
-index 3243d86..bcf8096 100644
---- a/libc/sysdeps/linux/x86_64/Makefile.arch
-+++ b/libc/sysdeps/linux/x86_64/Makefile.arch
-@@ -10,6 +10,9 @@ CSRC := brk.c __syscall_error.c sigaction.c mmap.c
- SSRC := \
- 	__longjmp.S setjmp.S syscall.S bsd-setjmp.S bsd-_setjmp.S
- 
-+LIBC_ARCH_DIR := $(top_srcdir)/libc/sysdeps/linux/$(TARGET_ARCH)
-+LIBC_ARCH_OUT := $(top_builddir)/libc/sysdeps/linux/$(TARGET_ARCH)
-+
- ifneq ($(UCLIBC_HAS_THREADS_NATIVE),y)
- SSRC += vfork.S clone.S
- endif
-@@ -20,3 +23,39 @@ ifeq ($(UCLIBC_HAS_TLS),y)
- SSRC += sched_getcpu.S
- endif
- endif
-+
-+ifeq ($(UCLIBC_SUSV4_LEGACY),y)
-+CSRC += makecontext.c
-+
-+SSRC += setcontext.S getcontext.S swapcontext.S __start_context.S
-+
-+ASFLAGS-setcontext.S   := -D_LIBC_REENTRANT
-+ASFLAGS-getcontext.S   := -D_LIBC_REENTRANT
-+ASFLAGS-swapcontext.S  := -D_LIBC_REENTRANT
-+
-+ifeq ($(UCLIBC_HAS_THREADS_NATIVE),y)
-+#Needed to use the correct SYSCALL_ERROR_HANDLER
-+ASFLAGS-setcontext.S   += -DUSE___THREAD
-+ASFLAGS-getcontext.S   += -DUSE___THREAD
-+ASFLAGS-swapcontext.S  += -DUSE___THREAD
-+endif
-+
-+pregen-headers-$(UCLIBC_SUSV4_LEGACY) += $(LIBC_ARCH_OUT)/ucontext_i.h
-+
-+headers_clean-y += libc_arch_headers_clean
-+
-+CFLAGS-ucontext_i.c = -S
-+
-+$(LIBC_ARCH_OUT)/ucontext_i.c: $(LIBC_ARCH_DIR)/ucontext_i.sym
-+	$(do_awk) $(top_srcdir)extra/scripts/gen-as-const.awk $< > $@
-+
-+$(LIBC_ARCH_OUT)/ucontext_i.s: $(LIBC_ARCH_OUT)/ucontext_i.c
-+	$(compile.c)
-+
-+$(LIBC_ARCH_OUT)/ucontext_i.h: $(LIBC_ARCH_OUT)/ucontext_i.s
-+	 $(do_sed) -n "s/^.*@@@name@@@\([^@]*\)@@@value@@@[^0-9Xxa-fA-F-]*\([0-9Xxa-fA-F-][0-9Xxa-fA-F-]*\).*@@@end@@@.*$\/#define \1 \2/p" $< > $@
-+
-+libc_arch_headers_clean:
-+	$(do_rm) $(addprefix $(LIBC_ARCH_OUT)/ucontext_i., c h s)
-+endif
-+
-diff --git a/libc/sysdeps/linux/x86_64/__start_context.S b/libc/sysdeps/linux/x86_64/__start_context.S
-new file mode 100644
-index 0000000..9f2ee23
---- /dev/null
-+++ b/libc/sysdeps/linux/x86_64/__start_context.S
-@@ -0,0 +1,49 @@
-+/* Copyright (C) 2002-2012 Free Software Foundation, Inc.
-+   This file is part of the GNU C Library.
-+   Contributed by Andreas Jaeger <aj@suse.de>, 2002.
-+
-+   The GNU C Library is free software; you can redistribute it and/or
-+   modify it under the terms of the GNU Lesser General Public
-+   License as published by the Free Software Foundation; either
-+   version 2.1 of the License, or (at your option) any later version.
-+
-+   The GNU C Library is distributed in the hope that it will be useful,
-+   but WITHOUT ANY WARRANTY; without even the implied warranty of
-+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-+   Lesser General Public License for more details.
-+
-+   You should have received a copy of the GNU Lesser General Public
-+   License along with the GNU C Library; if not, see
-+   <http://www.gnu.org/licenses/>.  */
-+
-+#include <sysdep.h>
-+
-+/* This is the helper code which gets called if a function which is
-+   registered with 'makecontext' returns.  In this case we have to
-+   install the context listed in the uc_link element of the context
-+   'makecontext' manipulated at the time of the 'makecontext' call.
-+   If the pointer is NULL the process must terminate.  */
-+
-+
-+ENTRY(__start_context)
-+	/* This removes the parameters passed to the function given to
-+	   'makecontext' from the stack.  RBX contains the address
-+	   on the stack pointer for the next context.  */
-+	movq	%rbx, %rsp
-+
-+	popq	%rdi			/* This is the next context.  */
-+	cfi_adjust_cfa_offset(-8)
-+	testq	%rdi, %rdi
-+	je	2f			/* If it is zero exit.  */
-+
-+	call	JUMPTARGET(__setcontext)
-+	/* If this returns (which can happen if the syscall fails) we'll
-+	   exit the program with the return error value (-1).  */
-+	movq	%rax,%rdi
-+
-+2:
-+	call	HIDDEN_JUMPTARGET(exit)
-+	/* The 'exit' call should never return.  In case it does cause
-+	   the process to terminate.  */
-+	hlt
-+END(__start_context)
-diff --git a/libc/sysdeps/linux/x86_64/getcontext.S b/libc/sysdeps/linux/x86_64/getcontext.S
-new file mode 100644
-index 0000000..dcebc4f
---- /dev/null
-+++ b/libc/sysdeps/linux/x86_64/getcontext.S
-@@ -0,0 +1,88 @@
-+/* Save current context.
-+   Copyright (C) 2002-2012 Free Software Foundation, Inc.
-+   This file is part of the GNU C Library.
-+   Contributed by Andreas Jaeger <aj@suse.de>, 2002.
-+
-+   The GNU C Library is free software; you can redistribute it and/or
-+   modify it under the terms of the GNU Lesser General Public
-+   License as published by the Free Software Foundation; either
-+   version 2.1 of the License, or (at your option) any later version.
-+
-+   The GNU C Library is distributed in the hope that it will be useful,
-+   but WITHOUT ANY WARRANTY; without even the implied warranty of
-+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-+   Lesser General Public License for more details.
-+
-+   You should have received a copy of the GNU Lesser General Public
-+   License along with the GNU C Library; if not, see
-+   <http://www.gnu.org/licenses/>.  */
-+
-+#include <sysdep.h>
-+
-+#include "ucontext_i.h"
-+
-+/*  int __getcontext (ucontext_t *ucp)
-+
-+  Saves the machine context in UCP such that when it is activated,
-+  it appears as if __getcontext() returned again.
-+
-+  This implementation is intended to be used for *synchronous* context
-+  switches only.  Therefore, it does not have to save anything
-+  other than the PRESERVED state.  */
-+
-+
-+ENTRY(__getcontext)
-+	/* Save the preserved registers, the registers used for passing
-+	   args, and the return address.  */
-+	movq	%rbx, oRBX(%rdi)
-+	movq	%rbp, oRBP(%rdi)
-+	movq	%r12, oR12(%rdi)
-+	movq	%r13, oR13(%rdi)
-+	movq	%r14, oR14(%rdi)
-+	movq	%r15, oR15(%rdi)
-+
-+	movq	%rdi, oRDI(%rdi)
-+	movq	%rsi, oRSI(%rdi)
-+	movq	%rdx, oRDX(%rdi)
-+	movq	%rcx, oRCX(%rdi)
-+	movq	%r8, oR8(%rdi)
-+	movq	%r9, oR9(%rdi)
-+
-+	movq	(%rsp), %rcx
-+	movq	%rcx, oRIP(%rdi)
-+	leaq	8(%rsp), %rcx		/* Exclude the return address.  */
-+	movq	%rcx, oRSP(%rdi)
-+
-+	/* We have separate floating-point register content memory on the
-+	   stack.  We use the __fpregs_mem block in the context.  Set the
-+	   links up correctly.  */
-+
-+	leaq	oFPREGSMEM(%rdi), %rcx
-+	movq	%rcx, oFPREGS(%rdi)
-+	/* Save the floating-point environment.  */
-+	fnstenv	(%rcx)
-+	fldenv	(%rcx)
-+	stmxcsr oMXCSR(%rdi)
-+
-+	/* Save the current signal mask with
-+	   rt_sigprocmask (SIG_BLOCK, NULL, set,_NSIG/8).  */
-+	leaq	oSIGMASK(%rdi), %rdx
-+	xorl	%esi,%esi
-+#if SIG_BLOCK == 0
-+	xorl	%edi, %edi
-+#else
-+	movl	$SIG_BLOCK, %edi
-+#endif
-+	movl	$_NSIG8,%r10d
-+	movl	$__NR_rt_sigprocmask, %eax
-+	syscall
-+	cmpq	$-4095, %rax		/* Check %rax for error.  */
-+	jae	SYSCALL_ERROR_LABEL	/* Jump to error handler if error.  */
-+
-+	/* All done, return 0 for success.  */
-+	xorl	%eax, %eax
-+L(pseudo_end):
-+	ret
-+PSEUDO_END(__getcontext)
-+
-+weak_alias (__getcontext, getcontext)
-diff --git a/libc/sysdeps/linux/x86_64/makecontext.c b/libc/sysdeps/linux/x86_64/makecontext.c
-new file mode 100644
-index 0000000..5473031
---- /dev/null
-+++ b/libc/sysdeps/linux/x86_64/makecontext.c
-@@ -0,0 +1,121 @@
-+/* Create new context.
-+   Copyright (C) 2002, 2004, 2005, 2008 Free Software Foundation, Inc.
-+   This file is part of the GNU C Library.
-+   Contributed by Andreas Jaeger <aj@suse.de>, 2002.
-+
-+   The GNU C Library is free software; you can redistribute it and/or
-+   modify it under the terms of the GNU Lesser General Public
-+   License as published by the Free Software Foundation; either
-+   version 2.1 of the License, or (at your option) any later version.
-+
-+   The GNU C Library is distributed in the hope that it will be useful,
-+   but WITHOUT ANY WARRANTY; without even the implied warranty of
-+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-+   Lesser General Public License for more details.
-+
-+   You should have received a copy of the GNU Lesser General Public
-+   License along with the GNU C Library; if not, see
-+   <http://www.gnu.org/licenses/>.  */
-+
-+#include <sysdep.h>
-+#include <stdarg.h>
-+#include <stdint.h>
-+#include <ucontext.h>
-+
-+#include "ucontext_i.h"
-+
-+/* This implementation can handle any ARGC value but only
-+   normal integer parameters.
-+   makecontext sets up a stack and the registers for the
-+   user context. The stack looks like this:
-+               +-----------------------+
-+               | next context          |
-+               +-----------------------+
-+               | parameter 7-n         |
-+	       +-----------------------+
-+	       | trampoline address    |
-+    %rsp ->    +-----------------------+
-+
-+   The registers are set up like this:
-+     %rdi,%rsi,%rdx,%rcx,%r8,%r9: parameter 1 to 6
-+     %rbx   : address of next context
-+     %rsp   : stack pointer.
-+*/
-+
-+/* XXX: This implementation currently only handles integer arguments.
-+   To handle long int and pointer arguments the va_arg arguments needs
-+   to be changed to long and also the stdlib/tst-setcontext.c file needs
-+   to be changed to pass long arguments to makecontext.  */
-+
-+
-+void
-+__makecontext (ucontext_t *ucp, void (*func) (void), int argc, ...)
-+{
-+  extern void __start_context (void);
-+  greg_t *sp;
-+  unsigned int idx_uc_link;
-+  va_list ap;
-+  int i;
-+
-+  /* Generate room on stack for parameter if needed and uc_link.  */
-+  sp = (greg_t *) ((uintptr_t) ucp->uc_stack.ss_sp
-+		   + ucp->uc_stack.ss_size);
-+  sp -= (argc > 6 ? argc - 6 : 0) + 1;
-+  /* Align stack and make space for trampoline address.  */
-+  sp = (greg_t *) ((((uintptr_t) sp) & -16L) - 8);
-+
-+  idx_uc_link = (argc > 6 ? argc - 6 : 0) + 1;
-+
-+  /* Setup context ucp.  */
-+  /* Address to jump to.  */
-+  ucp->uc_mcontext.gregs[REG_RIP] = (uintptr_t) func;
-+  /* Setup rbx.*/
-+  ucp->uc_mcontext.gregs[REG_RBX] = (uintptr_t) &sp[idx_uc_link];
-+  ucp->uc_mcontext.gregs[REG_RSP] = (uintptr_t) sp;
-+
-+  /* Setup stack.  */
-+  sp[0] = (uintptr_t) &__start_context;
-+  sp[idx_uc_link] = (uintptr_t) ucp->uc_link;
-+
-+  va_start (ap, argc);
-+  /* Handle arguments.
-+
-+     The standard says the parameters must all be int values.  This is
-+     an historic accident and would be done differently today.  For
-+     x86-64 all integer values are passed as 64-bit values and
-+     therefore extending the API to copy 64-bit values instead of
-+     32-bit ints makes sense.  It does not break existing
-+     functionality and it does not violate the standard which says
-+     that passing non-int values means undefined behavior.  */
-+  for (i = 0; i < argc; ++i)
-+    switch (i)
-+      {
-+      case 0:
-+	ucp->uc_mcontext.gregs[REG_RDI] = va_arg (ap, greg_t);
-+	break;
-+      case 1:
-+	ucp->uc_mcontext.gregs[REG_RSI] = va_arg (ap, greg_t);
-+	break;
-+      case 2:
-+	ucp->uc_mcontext.gregs[REG_RDX] = va_arg (ap, greg_t);
-+	break;
-+      case 3:
-+	ucp->uc_mcontext.gregs[REG_RCX] = va_arg (ap, greg_t);
-+	break;
-+      case 4:
-+	ucp->uc_mcontext.gregs[REG_R8] = va_arg (ap, greg_t);
-+	break;
-+      case 5:
-+	ucp->uc_mcontext.gregs[REG_R9] = va_arg (ap, greg_t);
-+	break;
-+      default:
-+	/* Put value on stack.  */
-+	sp[i - 5] = va_arg (ap, greg_t);
-+	break;
-+      }
-+  va_end (ap);
-+
-+}
-+
-+
-+weak_alias (__makecontext, makecontext)
-diff --git a/libc/sysdeps/linux/x86_64/setcontext.S b/libc/sysdeps/linux/x86_64/setcontext.S
-new file mode 100644
-index 0000000..561ab9f
---- /dev/null
-+++ b/libc/sysdeps/linux/x86_64/setcontext.S
-@@ -0,0 +1,103 @@
-+/* Install given context.
-+   Copyright (C) 2002-2012 Free Software Foundation, Inc.
-+   This file is part of the GNU C Library.
-+   Contributed by Andreas Jaeger <aj@suse.de>, 2002.
-+
-+   The GNU C Library is free software; you can redistribute it and/or
-+   modify it under the terms of the GNU Lesser General Public
-+   License as published by the Free Software Foundation; either
-+   version 2.1 of the License, or (at your option) any later version.
-+
-+   The GNU C Library is distributed in the hope that it will be useful,
-+   but WITHOUT ANY WARRANTY; without even the implied warranty of
-+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-+   Lesser General Public License for more details.
-+
-+   You should have received a copy of the GNU Lesser General Public
-+   License along with the GNU C Library; if not, see
-+   <http://www.gnu.org/licenses/>.  */
-+
-+#include <sysdep.h>
-+
-+#include "ucontext_i.h"
-+
-+
-+/*  int __setcontext (const ucontext_t *ucp)
-+
-+  Restores the machine context in UCP and thereby resumes execution
-+  in that context.
-+
-+  This implementation is intended to be used for *synchronous* context
-+  switches only.  Therefore, it does not have to restore anything
-+  other than the PRESERVED state.  */
-+
-+ENTRY(__setcontext)
-+	/* Save argument since syscall will destroy it.  */
-+	pushq	%rdi
-+	cfi_adjust_cfa_offset(8)
-+
-+	/* Set the signal mask with
-+	   rt_sigprocmask (SIG_SETMASK, mask, NULL, _NSIG/8).  */
-+	leaq	oSIGMASK(%rdi), %rsi
-+	xorl	%edx, %edx
-+	movl	$SIG_SETMASK, %edi
-+	movl	$_NSIG8,%r10d
-+	movl	$__NR_rt_sigprocmask, %eax
-+	syscall
-+	popq	%rdi			/* Reload %rdi, adjust stack.  */
-+	cfi_adjust_cfa_offset(-8)
-+	cmpq	$-4095, %rax		/* Check %rax for error.  */
-+	jae	SYSCALL_ERROR_LABEL	/* Jump to error handler if error.  */
-+
-+	/* Restore the floating-point context.  Not the registers, only the
-+	   rest.  */
-+	movq	oFPREGS(%rdi), %rcx
-+	fldenv	(%rcx)
-+	ldmxcsr oMXCSR(%rdi)
-+
-+
-+	/* Load the new stack pointer, the preserved registers and
-+	   registers used for passing args.  */
-+	cfi_def_cfa(%rdi, 0)
-+	cfi_offset(%rbx,oRBX)
-+	cfi_offset(%rbp,oRBP)
-+	cfi_offset(%r12,oR12)
-+	cfi_offset(%r13,oR13)
-+	cfi_offset(%r14,oR14)
-+	cfi_offset(%r15,oR15)
-+	cfi_offset(%rsp,oRSP)
-+	cfi_offset(%rip,oRIP)
-+
-+	movq	oRSP(%rdi), %rsp
-+	movq	oRBX(%rdi), %rbx
-+	movq	oRBP(%rdi), %rbp
-+	movq	oR12(%rdi), %r12
-+	movq	oR13(%rdi), %r13
-+	movq	oR14(%rdi), %r14
-+	movq	oR15(%rdi), %r15
-+
-+	/* The following ret should return to the address set with
-+	getcontext.  Therefore push the address on the stack.  */
-+	movq	oRIP(%rdi), %rcx
-+	pushq	%rcx
-+
-+	movq	oRSI(%rdi), %rsi
-+	movq	oRDX(%rdi), %rdx
-+	movq	oRCX(%rdi), %rcx
-+	movq	oR8(%rdi), %r8
-+	movq	oR9(%rdi), %r9
-+
-+	/* Setup finally  %rdi.  */
-+	movq	oRDI(%rdi), %rdi
-+
-+	/* End FDE here, we fall into another context.  */
-+	cfi_endproc
-+	cfi_startproc
-+
-+	/* Clear rax to indicate success.  */
-+	xorl	%eax, %eax
-+L(pseudo_end):
-+	ret
-+PSEUDO_END(__setcontext)
-+
-+weak_alias (__setcontext, setcontext)
-diff --git a/libc/sysdeps/linux/x86_64/swapcontext.S b/libc/sysdeps/linux/x86_64/swapcontext.S
-new file mode 100644
-index 0000000..6d2ebb8
---- /dev/null
-+++ b/libc/sysdeps/linux/x86_64/swapcontext.S
-@@ -0,0 +1,121 @@
-+/* Save current context and install the given one.
-+   Copyright (C) 2002-2012 Free Software Foundation, Inc.
-+   This file is part of the GNU C Library.
-+   Contributed by Andreas Jaeger <aj@suse.de>, 2002.
-+
-+   The GNU C Library is free software; you can redistribute it and/or
-+   modify it under the terms of the GNU Lesser General Public
-+   License as published by the Free Software Foundation; either
-+   version 2.1 of the License, or (at your option) any later version.
-+
-+   The GNU C Library is distributed in the hope that it will be useful,
-+   but WITHOUT ANY WARRANTY; without even the implied warranty of
-+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-+   Lesser General Public License for more details.
-+
-+   You should have received a copy of the GNU Lesser General Public
-+   License along with the GNU C Library; if not, see
-+   <http://www.gnu.org/licenses/>.  */
-+
-+#include <sysdep.h>
-+
-+#include "ucontext_i.h"
-+
-+
-+/* int __swapcontext (ucontext_t *oucp, const ucontext_t *ucp);
-+
-+  Saves the machine context in oucp such that when it is activated,
-+  it appears as if __swapcontextt() returned again, restores the
-+  machine context in ucp and thereby resumes execution in that
-+  context.
-+
-+  This implementation is intended to be used for *synchronous* context
-+  switches only.  Therefore, it does not have to save anything
-+  other than the PRESERVED state.  */
-+
-+ENTRY(__swapcontext)
-+	/* Save the preserved registers, the registers used for passing args,
-+	   and the return address.  */
-+	movq	%rbx, oRBX(%rdi)
-+	movq	%rbp, oRBP(%rdi)
-+	movq	%r12, oR12(%rdi)
-+	movq	%r13, oR13(%rdi)
-+	movq	%r14, oR14(%rdi)
-+	movq	%r15, oR15(%rdi)
-+
-+	movq	%rdi, oRDI(%rdi)
-+	movq	%rsi, oRSI(%rdi)
-+	movq	%rdx, oRDX(%rdi)
-+	movq	%rcx, oRCX(%rdi)
-+	movq	%r8, oR8(%rdi)
-+	movq	%r9, oR9(%rdi)
-+
-+	movq	(%rsp), %rcx
-+	movq	%rcx, oRIP(%rdi)
-+	leaq	8(%rsp), %rcx		/* Exclude the return address.  */
-+	movq	%rcx, oRSP(%rdi)
-+
-+	/* We have separate floating-point register content memory on the
-+	   stack.  We use the __fpregs_mem block in the context.  Set the
-+	   links up correctly.  */
-+	leaq	oFPREGSMEM(%rdi), %rcx
-+	movq	%rcx, oFPREGS(%rdi)
-+	/* Save the floating-point environment.  */
-+	fnstenv	(%rcx)
-+	stmxcsr oMXCSR(%rdi)
-+
-+
-+	/* The syscall destroys some registers, save them.  */
-+	movq	%rsi, %r12
-+
-+	/* Save the current signal mask and install the new one with
-+	   rt_sigprocmask (SIG_BLOCK, newset, oldset,_NSIG/8).  */
-+	leaq	oSIGMASK(%rdi), %rdx
-+	leaq	oSIGMASK(%rsi), %rsi
-+	movl	$SIG_SETMASK, %edi
-+	movl	$_NSIG8,%r10d
-+	movl	$__NR_rt_sigprocmask, %eax
-+	syscall
-+	cmpq	$-4095, %rax		/* Check %rax for error.  */
-+	jae	SYSCALL_ERROR_LABEL	/* Jump to error handler if error.  */
-+
-+	/* Restore destroyed registers.  */
-+	movq	%r12, %rsi
-+
-+	/* Restore the floating-point context.  Not the registers, only the
-+	   rest.  */
-+	movq	oFPREGS(%rsi), %rcx
-+	fldenv	(%rcx)
-+	ldmxcsr oMXCSR(%rsi)
-+
-+	/* Load the new stack pointer and the preserved registers.  */
-+	movq	oRSP(%rsi), %rsp
-+	movq	oRBX(%rsi), %rbx
-+	movq	oRBP(%rsi), %rbp
-+	movq	oR12(%rsi), %r12
-+	movq	oR13(%rsi), %r13
-+	movq	oR14(%rsi), %r14
-+	movq	oR15(%rsi), %r15
-+
-+	/* The following ret should return to the address set with
-+	getcontext.  Therefore push the address on the stack.  */
-+	movq	oRIP(%rsi), %rcx
-+	pushq	%rcx
-+
-+	/* Setup registers used for passing args.  */
-+	movq	oRDI(%rsi), %rdi
-+	movq	oRDX(%rsi), %rdx
-+	movq	oRCX(%rsi), %rcx
-+	movq	oR8(%rsi), %r8
-+	movq	oR9(%rsi), %r9
-+
-+	/* Setup finally  %rsi.  */
-+	movq	oRSI(%rsi), %rsi
-+
-+	/* Clear rax to indicate success.  */
-+	xorl	%eax, %eax
-+L(pseudo_end):
-+	ret
-+PSEUDO_END(__swapcontext)
-+
-+weak_alias (__swapcontext, swapcontext)
-diff --git a/libc/sysdeps/linux/x86_64/ucontext_i.sym b/libc/sysdeps/linux/x86_64/ucontext_i.sym
-new file mode 100644
-index 0000000..af3e0e5
---- /dev/null
-+++ b/libc/sysdeps/linux/x86_64/ucontext_i.sym
-@@ -0,0 +1,37 @@
-+#include <stddef.h>
-+#include <signal.h>
-+#include <sys/ucontext.h>
-+
-+--
-+
-+SIG_BLOCK
-+SIG_SETMASK
-+
-+_NSIG8		(_NSIG / 8)
-+
-+#define ucontext(member)	offsetof (ucontext_t, member)
-+#define mcontext(member)	ucontext (uc_mcontext.member)
-+#define mreg(reg)		mcontext (gregs[REG_##reg])
-+
-+oRBP		mreg (RBP)
-+oRSP		mreg (RSP)
-+oRBX		mreg (RBX)
-+oR8		mreg (R8)
-+oR9		mreg (R9)
-+oR10		mreg (R10)
-+oR11		mreg (R11)
-+oR12		mreg (R12)
-+oR13		mreg (R13)
-+oR14		mreg (R14)
-+oR15		mreg (R15)
-+oRDI		mreg (RDI)
-+oRSI		mreg (RSI)
-+oRDX		mreg (RDX)
-+oRAX		mreg (RAX)
-+oRCX		mreg (RCX)
-+oRIP		mreg (RIP)
-+oEFL		mreg (EFL)
-+oFPREGS		mcontext (fpregs)
-+oSIGMASK	ucontext (uc_sigmask)
-+oFPREGSMEM	ucontext (__fpregs_mem)
-+oMXCSR		ucontext (__fpregs_mem.mxcsr)
--- 
-1.8.0
-
diff --git a/main/libc0.9.32/APKBUILD b/main/libc0.9.32/APKBUILD
index c86249eed6..ad6d01a9ff 100644
--- a/main/libc0.9.32/APKBUILD
+++ b/main/libc0.9.32/APKBUILD
@@ -4,7 +4,7 @@ pkgname=libc$_abiver
 _gitver=
 pkgver=0.9.33.2
 _ver=${pkgver/_/-}
-pkgrel=23
+pkgrel=24
 pkgdesc="C library for developing embedded Linux systems"
 url=http://uclibc.org
 license="LGPL-2"
@@ -37,7 +37,7 @@ source="http://uclibc.org/downloads/uClibc-${_ver}.tar.xz
 eventfd.patch
 uClibc-0.9.33-avahi.patch
 librt-re-add-SIGCANCEL-to-the-list-of-blocked-signal-in-helper-thread.patch
-	
+
 	0001-add-posix_madvise.c.patch
 	posix_fallocate.patch
 	posix_fallocate-fix.patch
@@ -51,8 +51,8 @@ librt-re-add-SIGCANCEL-to-the-list-of-blocked-signal-in-helper-thread.patch
 
 	0009-sys-quota.h-sync-with-glibc.patch
 
-	0001-libc-sysdeps-get-make-set-swap-context-for-i386.patch
-	0002-libc-sysdeps-add-get-make-set-swap-context-for-x86_6.patch
+	0001-libc-add-get-set-swap-make-context-user-context-mani.patch
+	ucontext-reentrant.patch
 	uclibc-dlclose-fix.patch
 	uclibc-rtld_next-fix.patch
 	560-res_init_asterisk.patch
@@ -200,8 +200,8 @@ f059f5e437ed4fe1b6973dd08972e583  0003-pread-pwrite-drop-fallback-funcs.patch
 32544dc16cc1b4845484535bf758a4b1  0005-pread_write.c-make-all-archs-use-common-code.patch
 73037bc978897e20ae2fc531759443eb  0006-endian.h-add-some-handy-macros-to-be-used-in-syscall.patch
 f41ab6cf22545d2e629d4c7107ac6f85  0009-sys-quota.h-sync-with-glibc.patch
-e5aceb82bf4ffd5328113af5380fcdb6  0001-libc-sysdeps-get-make-set-swap-context-for-i386.patch
-da043a65003ac29ca8b96f416e7752ee  0002-libc-sysdeps-add-get-make-set-swap-context-for-x86_6.patch
+604d034ec978a0a4901a8f8d5f05be3e  0001-libc-add-get-set-swap-make-context-user-context-mani.patch
+28a0832cabb167e4c27bdd79fc6eca6d  ucontext-reentrant.patch
 8374c98e769e603af4adad12e01cf358  uclibc-dlclose-fix.patch
 ffe7564afe846026a278dd8c0251ace9  uclibc-rtld_next-fix.patch
 1c4199349874608161575f047c32be02  560-res_init_asterisk.patch
@@ -215,9 +215,9 @@ cbbd96f04cf17a403c1f74767e144fa2  uClibc-0.9.33.2-define-MSG_CMSG_CLOEXEC.patch
 bfe02411af06545da375f177cfaf7efe  avoid-forced-unwind.patch
 5320bafb053938dda439cdf06095d172  0001-libc-stdlib-add-mkostemp-helpers.patch
 d1dd50e417383d46acdd5976813c9862  0001-stdlib-Fix-fndecl-of-mkostemp-mkostemp64.patch
-ce8a33a31f5a53031fbad8b1d1b66d44  uclibcconfig.x86
-e861a17baa541accf4d4d39a98d74c32  uclibcconfig.x86_64
-ce8a33a31f5a53031fbad8b1d1b66d44  uclibcconfig.i486
+05dba6fb46e8d1cb2e38cbd5b93c1d95  uclibcconfig.x86
+2b1755754cd72cd06a23ef1db26d8c59  uclibcconfig.x86_64
+05dba6fb46e8d1cb2e38cbd5b93c1d95  uclibcconfig.i486
 3f1e788cfa922c5a39d22a509bf49b60  uclibcconfig.arm
 820d5176004ccfa2baa3607ba576360f  uclibcconfig.powerpc
 f3be4f2bc54d7561d252937e10abf0d2  uclibc-utils.trigger"
@@ -243,8 +243,8 @@ ba5b0cb1c42bb221a38cc3b22e150a08e64952716d24a4af3b61036b23d60bfd  0003-pread-pwr
 46a53a40657c3403fe485ebb6e6c61733c0e6f708af80ceabc2e5d4b26d83a57  0005-pread_write.c-make-all-archs-use-common-code.patch
 54868bc052a588e685a068e1a030535f7b8be0297350f528c554baaee66519d1  0006-endian.h-add-some-handy-macros-to-be-used-in-syscall.patch
 233c022a00c6e0ff704e0403e2ce0aedcc972cc2642da671ad2a19f12de96139  0009-sys-quota.h-sync-with-glibc.patch
-58761be1f06a2c860e04716233a0ff2cf4fdf92b82bcc2664f06a33601b971fd  0001-libc-sysdeps-get-make-set-swap-context-for-i386.patch
-1a77571281c3eb817001a32bcf7ee140a2713276ce06e146723ec16229acb46b  0002-libc-sysdeps-add-get-make-set-swap-context-for-x86_6.patch
+294264c56ab245772c14bd60ea2338cb70503e5c638cff7383badc8550cb25d0  0001-libc-add-get-set-swap-make-context-user-context-mani.patch
+5721f722f98d55548dab70cdbcc7be61b9315ce5bfe506a3c372af173f8dc13f  ucontext-reentrant.patch
 08bfb952464d1b3876d88f38929e8c98c074e40579685733e21612442ed0472e  uclibc-dlclose-fix.patch
 16ace72a805b39a623364cfd1e884e6d9f19bb85f650a03712e4104533f5186f  uclibc-rtld_next-fix.patch
 d7f11efbce5c4ef27849e7a3cd370be86540c635effd51d5374194b65c7c7e83  560-res_init_asterisk.patch
@@ -258,9 +258,9 @@ cf0ce515c8d98e68cec01e805cb568371dd6f4aa21c14ea8bf841a0a0c26b358  uClibc-0.9.33.
 59265ece74b907c34186d47f035c9cc3b390f19bc4ef932d915317119574e709  avoid-forced-unwind.patch
 013f33861790a75d3ec1c28861d57a86e990a06f47120d992f40a36985132550  0001-libc-stdlib-add-mkostemp-helpers.patch
 646dc019fd010c16d9c2cbea251be816ce44ad780eac8aad58108923d2b473bd  0001-stdlib-Fix-fndecl-of-mkostemp-mkostemp64.patch
-7f613b473adbbf38701125f3d298d11f91e102e5cda17eec8133e8463bdc10c9  uclibcconfig.x86
-bec76f2c67c0c632b24bb8c3db01396cc56f208a8c5ca16543fd5e71050d8c88  uclibcconfig.x86_64
-7f613b473adbbf38701125f3d298d11f91e102e5cda17eec8133e8463bdc10c9  uclibcconfig.i486
+ede1827b14e310a2b048d12431fada583560bcfe3a6164004f38568617cc74ef  uclibcconfig.x86
+d793fa91cb758eb482c9f795632972b2c1559d4ce76a855db0fd2d05c01492c3  uclibcconfig.x86_64
+ede1827b14e310a2b048d12431fada583560bcfe3a6164004f38568617cc74ef  uclibcconfig.i486
 84b3954fb1b2f27a22517a2cd70744ba535dec689e1df2cb064c3feb0e396f9a  uclibcconfig.arm
 baf4491a141010b2aa9f92ab7203154a73d4ca96a7ea0a3e72c5bc920d241783  uclibcconfig.powerpc
 04a6db65443a95e7977e25210024ce3fe8472888d16e8fb476ba91db0d92efb1  uclibc-utils.trigger"
@@ -286,8 +286,8 @@ f5ef0feac6b036062d2c6c346a12e71850c183233678979008aa70d5fb4da9adc7ae561ba42cb299
 6eceeebd8914e03866057f643ffd9f175cbfb1dd46f93c5d220dcf4ca1ad3e9d0271961243314936e8c155586df4d3d6ad2fd5e4775a36458453c58f3ff6b26d  0005-pread_write.c-make-all-archs-use-common-code.patch
 86eb00a7c824bc9de8e5164d252c40f9cc44abe4bec640c5f8df7372dbc9b9a4079f4cb6929f22e24194d280f48df20f0e04d854080ad7be42693cf9cf8b0c65  0006-endian.h-add-some-handy-macros-to-be-used-in-syscall.patch
 7a4f5dd295479e44daa937a53262be15ed578d7a01df2964d881adf43af48fa18a843390a0e60648998bafc85bd487b07f4d4251c7b64a5b6e11d447aa7811bd  0009-sys-quota.h-sync-with-glibc.patch
-71c9ba1fe1a593fa9afd6d89be1d041e10f1a0814854a8f866e1b8481b2b50c8f7eb9105d59e95c5585b4b6f7f6bed3b4a4e65f4ee574e94b1d01e68e35111cf  0001-libc-sysdeps-get-make-set-swap-context-for-i386.patch
-245a820d8781bca990d92e4f2614f7c136d59ab4f97c645e376bc0dcde3525e938086bfef8d4eff4811cdb0c34094a12e899f0b0533d2036e188680fe0eae2ac  0002-libc-sysdeps-add-get-make-set-swap-context-for-x86_6.patch
+9db2c720078c76441f64c3c21ed4829d8ad7a32a5eced830b5f5d728d8503062cde06f55fde8a7c5c528f22032430ddcb9fb6915c31544f1d6d13e9d6f1b2755  0001-libc-add-get-set-swap-make-context-user-context-mani.patch
+5f47e1c65f0a51b3703b1d722742d6d9f29f921d747c6e97e5f9c426d93dae2d717abd0a131337ec0b3d2927fbff92dab6f2671b9ac6a77bf14099e35ce894c1  ucontext-reentrant.patch
 f6de454c16a56c5978b9e840440baf4b17cd92c30191407fd371a88a5764ea3f119a5b639ca9aab57fc3e08ab5f94eefdcca4e84bd63a71788cb8ee50531af0c  uclibc-dlclose-fix.patch
 8068fb6f40c370f3fd6cf05f39c0d8f54adb442faf279fa14a7f7d0e14a49f9220aacae9617460ccea71824e2f1272faf5bf1dab12ffeeb42129869c8b61c30d  uclibc-rtld_next-fix.patch
 3d06e204dcca1f570356c42b9a3265448217668db7df4c9641dccd14190d7578df8be1fc1a6d7824544736348bd54f816d10b49b860b9c390d109803f3ea5b6a  560-res_init_asterisk.patch
@@ -301,9 +301,9 @@ be0bc446a030b1e59ccd8fa564b773cf12f6aac1ecb645ceeeb54958ebd8dd8619431bc395aeb640
 265a805fd75197782cbfa527289966eacd5453c677a33f336cdcc80ec001a4f945bfb3348e219bc3d754a9ba9f519bf09270cc17e2f23d0575649bbf867022bd  avoid-forced-unwind.patch
 c95a1e96308c761dbe4d11fc7d84aee04a5abc8d8da191cc5aae407eba4fec9b7c62f9c7f8294004d7a160fc7051c3d9de64368e4c85c633609ee3dfb5d97e3c  0001-libc-stdlib-add-mkostemp-helpers.patch
 1867ca0de857afc43e430cb18bbdd279e795c73062184c18c82c8d5970fad88cd60aee8c24a1ab16595dfb5df002be19eb46f24017d5a0432358107a213f43d6  0001-stdlib-Fix-fndecl-of-mkostemp-mkostemp64.patch
-ab04402abefad1f239d27d9638c1d8d76bc6a8edd77bbb8ed5a4b1445dbc44d709bb1b5214fc9a37a2208c2b6e92dd0a147eddea5d0b2e1ca3ec227432fe86eb  uclibcconfig.x86
-063899afb5f3c20e5dae1b613aa8963408b66ef21228df2500366163aeda71ca4163cbef8c3e53f389ba4a85b8eec5991667cdb31576141ce2ccbc1dc3d33cab  uclibcconfig.x86_64
-ab04402abefad1f239d27d9638c1d8d76bc6a8edd77bbb8ed5a4b1445dbc44d709bb1b5214fc9a37a2208c2b6e92dd0a147eddea5d0b2e1ca3ec227432fe86eb  uclibcconfig.i486
+ef8e7225e8dc82cf16f428359b117ac643179e5bab96a8613915ad34a3b0df945bf650216516502ffed6254c023e0ef000892875ce813e7532016abf54b57758  uclibcconfig.x86
+bd8ff2c359e221607943f8c55508b4e5ac0dcd344ccbe0e4579bc16e34694a27f27b0aea141ecb6f4fc42c44dc85aa5a2bbf282cbee592550f45af01276caefd  uclibcconfig.x86_64
+ef8e7225e8dc82cf16f428359b117ac643179e5bab96a8613915ad34a3b0df945bf650216516502ffed6254c023e0ef000892875ce813e7532016abf54b57758  uclibcconfig.i486
 80527db34a47a5f9cd830df87bfdb2ac3766c67f2e7aec9d6574385fb8b5100e45454afe921be27b6dd3b04ea71e7859f590810ec2678d3098c31538bdbf001c  uclibcconfig.arm
 43592243780bfb5b1c97b6be04708cb0a878ba2311667286a6c41a88773081e14d6c927ca119a0dfd3b4dd9e28bae0e423c5e9d56d4927dbe504966cfdf55b76  uclibcconfig.powerpc
 468f122e0be5ad76e5c5914013de6971cbace846ecfb2a2b906ce52f175cad13a2641567f65d5be88d4d9781f442fa5531da041ced3b0410bdfcf31f72ae20de  uclibc-utils.trigger"
diff --git a/main/libc0.9.32/uclibcconfig.x86 b/main/libc0.9.32/uclibcconfig.x86
index 84323ff7a5..a83864990c 100644
--- a/main/libc0.9.32/uclibcconfig.x86
+++ b/main/libc0.9.32/uclibcconfig.x86
@@ -1,7 +1,7 @@
 #
 # Automatically generated make config: don't edit
 # Version: 0.9.33.2
-# Fri May 25 19:11:31 2012
+# Tue Sep 24 09:44:01 2013
 #
 # TARGET_alpha is not set
 # TARGET_arm is not set
@@ -77,6 +77,7 @@ HAVE_DOT_CONFIG=y
 # General Library Settings
 #
 DOPIC=y
+ARCH_HAS_UCONTEXT=y
 HAVE_SHARED=y
 FORCE_SHAREABLE_TEXT_SEGMENTS=y
 LDSO_LDD_SUPPORT=y
@@ -109,6 +110,7 @@ MALLOC_GLIBC_COMPAT=y
 UCLIBC_DYNAMIC_ATEXIT=y
 COMPAT_ATEXIT=y
 UCLIBC_SUSV3_LEGACY=y
+UCLIBC_HAS_CONTEXT_FUNCS=y
 UCLIBC_SUSV3_LEGACY_MACROS=y
 UCLIBC_SUSV4_LEGACY=y
 # UCLIBC_STRICT_HEADERS is not set
diff --git a/main/libc0.9.32/uclibcconfig.x86_64 b/main/libc0.9.32/uclibcconfig.x86_64
index b03ad99020..228236ea86 100644
--- a/main/libc0.9.32/uclibcconfig.x86_64
+++ b/main/libc0.9.32/uclibcconfig.x86_64
@@ -1,7 +1,7 @@
 #
 # Automatically generated make config: don't edit
 # Version: 0.9.33.2
-# Fri May 25 19:11:31 2012
+# Tue Sep 24 09:44:01 2013
 #
 # TARGET_alpha is not set
 # TARGET_arm is not set
@@ -60,6 +60,7 @@ HAVE_DOT_CONFIG=y
 # General Library Settings
 #
 DOPIC=y
+ARCH_HAS_UCONTEXT=y
 HAVE_SHARED=y
 FORCE_SHAREABLE_TEXT_SEGMENTS=y
 LDSO_LDD_SUPPORT=y
@@ -92,6 +93,7 @@ MALLOC_GLIBC_COMPAT=y
 UCLIBC_DYNAMIC_ATEXIT=y
 COMPAT_ATEXIT=y
 UCLIBC_SUSV3_LEGACY=y
+UCLIBC_HAS_CONTEXT_FUNCS=y
 UCLIBC_SUSV3_LEGACY_MACROS=y
 UCLIBC_SUSV4_LEGACY=y
 # UCLIBC_STRICT_HEADERS is not set
diff --git a/main/libc0.9.32/ucontext-reentrant.patch b/main/libc0.9.32/ucontext-reentrant.patch
new file mode 100644
index 0000000000..2417e15a48
--- /dev/null
+++ b/main/libc0.9.32/ucontext-reentrant.patch
@@ -0,0 +1,12 @@
+diff --git a/libc/sysdeps/linux/i386/Makefile.arch b/libc/sysdeps/linux/i386/Makefile.arch
+index b47f5a0..8b1edc2 100644
+--- a/libc/sysdeps/linux/i386/Makefile.arch
++++ b/libc/sysdeps/linux/i386/Makefile.arch
+@@ -18,4 +18,7 @@ endif
+ 
+ ifeq ($(UCLIBC_HAS_CONTEXT_FUNCS),y)
+ SSRC += makecontext.S setcontext.S getcontext.S swapcontext.S
++ASFLAGS-setcontext.S := -D_LIBC_REENTRANT
++ASFLAGS-getcontext.S := -D_LIBC_REENTRANT
++ASFLAGS-swapcontext.S := -D_LIBC_REENTRANT
+ endif