Merge changes between r19234 and r19292 from /fsf/trunk.

git-svn-id: svn://svn.eglibc.org/trunk@19293 7b3dc134-2b1b-0410-93df-9e9f96275f8d

9 files changed, 297 insertions, 129 deletions

diff --git a/libc/sysdeps/unix/sysv/linux/sh/Makefile b/libc/sysdeps/unix/sysv/linux/sh/Makefile
index 1ead8f2ae..dd3b382ac 100644
--- a/libc/sysdeps/unix/sysv/linux/sh/Makefile
+++ b/libc/sysdeps/unix/sysv/linux/sh/Makefile
@@ -6,6 +6,10 @@ ifeq ($(subdir),stdlib)
 gen-as-const-headers += ucontext_i.sym
 endif
 
+ifeq ($(subdir),misc)
+gen-as-const-headers += sigaltstack-offsets.sym
+endif
+
 ifeq ($(subdir),math)
 # The libm.so link can't find __fpscr_values
 libm.so-no-z-defs = yes
diff --git a/libc/sysdeps/unix/sysv/linux/sh/Versions b/libc/sysdeps/unix/sysv/linux/sh/Versions
index 9fb83456f..ca1d7da33 100644
--- a/libc/sysdeps/unix/sysv/linux/sh/Versions
+++ b/libc/sysdeps/unix/sysv/linux/sh/Versions
@@ -28,4 +28,7 @@ libc {
   GLIBC_2.11 {
     fallocate64;
   }
+  GLIBC_2.16 {
+    fanotify_mark;
+  }
 }
diff --git a/libc/sysdeps/unix/sysv/linux/sh/____longjmp_chk.S b/libc/sysdeps/unix/sysv/linux/sh/____longjmp_chk.S
new file mode 100644
index 000000000..d74caa21b
--- /dev/null
+++ b/libc/sysdeps/unix/sysv/linux/sh/____longjmp_chk.S
@@ -0,0 +1,122 @@
+/* Copyright (C) 2009-2012 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 <sigaltstack-offsets.h>
+
+	.section .rodata.str1.1,"aMS",@progbits,1
+	.type	longjmp_msg,@object
+longjmp_msg:
+	.string "longjmp causes uninitialized stack frame"
+	.size	longjmp_msg, .-longjmp_msg
+	.text
+
+#define __longjmp ____longjmp_chk
+
+#ifdef PIC
+# define CALL_FAIL \
+	mov.l	.Lfail, r1;				\
+	mov.l	.Lstr, r4;				\
+	mov.l	r12, @-r15;				\
+	cfi_remember_state;				\
+	cfi_adjust_cfa_offset (4);			\
+	cfi_rel_offset (r12, 0);			\
+	mova	.Lgot, r0;				\
+	mov.l	.Lgot, r12;				\
+	add	r0, r12;				\
+	sts.l	pr, @-r15;				\
+	cfi_adjust_cfa_offset (4);			\
+	cfi_rel_offset (pr, 0);				\
+	bsrf	r1;					\
+	 add	r12, r4;				\
+.Lfail0:						\
+	/* Unreachable.	 */				\
+	.align	2;					\
+.Lgot:							\
+	.long	_GLOBAL_OFFSET_TABLE_;			\
+.Lstr:							\
+	.long	longjmp_msg@GOTOFF;			\
+.Lfail:							\
+	.long	__GI___fortify_fail@PLT-(.Lfail0-.);	\
+	cfi_restore_state;
+#else
+# define CALL_FAIL \
+	mov.l	.Lfail, r1;				\
+	mov.l	.Lstr, r4;				\
+	sts.l	pr, @-r15;				\
+	cfi_remember_state;				\
+	cfi_adjust_cfa_offset (4);			\
+	cfi_rel_offset (pr, 0);				\
+	jsr	@r1;					\
+	 nop;						\
+	/* Unreachable.	 */				\
+	.align	2;					\
+.Lstr:							\
+	.long	longjmp_msg;				\
+.Lfail:							\
+	.long	__fortify_fail;				\
+	cfi_restore_state;
+#endif
+
+#define CHECK_SP(reg) \
+	/* Jumping to a higher-address frame is always allowed.	 */	\
+	cmp/hs	r15, reg;						\
+	bt	.Lok;							\
+									\
+	mov.l	r0, @-r15; /* The return value is already in here.  */	\
+	cfi_adjust_cfa_offset (4);					\
+	mov.l	r1, @-r15; /* PTR_DEMANGLE helper.  */			\
+	cfi_adjust_cfa_offset (4);					\
+	mov.l	r2, @-r15; /* The new SP value is already in here.  */	\
+	cfi_adjust_cfa_offset (4);					\
+	mov.l	r4, @-r15; /* We'll still need this one.  */		\
+	cfi_adjust_cfa_offset (4);					\
+	add	#-sizeSS, r15;						\
+	cfi_adjust_cfa_offset (sizeSS);					\
+	mov	#0, r4;							\
+	mov	r15, r5;						\
+	DO_CALL (sigaltstack, 2);					\
+	/* Without working sigaltstack we cannot perform the test.  */	\
+	tst	r0, r0;							\
+	bf	.Lok2;							\
+	mov.l	@(oSS_FLAGS, r15), r0;					\
+	tst	#SS_ONSTACK, r0;					\
+	bt	.Lcall_fail;						\
+	mov.l	@(oSS_SIZE, r15), r2;					\
+	mov.l	@(oSS_SP, r15), r1;					\
+	add	r2, r1;							\
+	sub	r8, r1;							\
+	cmp/hi	r1, r2;							\
+	bf	.Lok2;							\
+.Lcall_fail:								\
+	CALL_FAIL							\
+									\
+.Lok2:									\
+	add	#sizeSS, r15;						\
+	cfi_adjust_cfa_offset (-sizeSS);				\
+	mov.l	@r15+, r4;						\
+	cfi_adjust_cfa_offset (-4);					\
+	mov.l	@r15+, r2;						\
+	cfi_adjust_cfa_offset (-4);					\
+	mov.l	@r15+, r1;						\
+	cfi_adjust_cfa_offset (-4);					\
+	mov.l	@r15+, r0;						\
+	cfi_adjust_cfa_offset (-4);					\
+.Lok:
+
+#include <__longjmp.S>
diff --git a/libc/sysdeps/unix/sysv/linux/sh/bits/atomic.h b/libc/sysdeps/unix/sysv/linux/sh/bits/atomic.h
index c8f07e55a..05e492202 100644
--- a/libc/sysdeps/unix/sysv/linux/sh/bits/atomic.h
+++ b/libc/sysdeps/unix/sysv/linux/sh/bits/atomic.h
@@ -1,5 +1,5 @@
 /* Atomic operations used inside libc.  Linux/SH version.
-   Copyright (C) 2003, 2011 Free Software Foundation, Inc.
+   Copyright (C) 2003-2012 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
@@ -73,11 +73,10 @@ typedef uintmax_t uatomic_max_t;
 #define __arch_compare_and_exchange_val_8_acq(mem, newval, oldval) \
   ({ __typeof (*(mem)) __result; \
      __asm __volatile ("\
-	.align 2\n\
 	mova 1f,r0\n\
-	nop\n\
+	.align 2\n\
 	mov r15,r1\n\
-	mov #-8,r15\n\
+	mov #(0f-1f),r15\n\
      0: mov.b @%1,%0\n\
 	cmp/eq %0,%3\n\
 	bf 1f\n\
@@ -90,10 +89,10 @@ typedef uintmax_t uatomic_max_t;
 #define __arch_compare_and_exchange_val_16_acq(mem, newval, oldval) \
   ({ __typeof (*(mem)) __result; \
      __asm __volatile ("\
-	.align 2\n\
 	mova 1f,r0\n\
-	nop\n\
 	mov r15,r1\n\
+	.align 2\n\
+	mov #(0f-1f),r15\n\
 	mov #-8,r15\n\
      0: mov.w @%1,%0\n\
 	cmp/eq %0,%3\n\
@@ -107,11 +106,10 @@ typedef uintmax_t uatomic_max_t;
 #define __arch_compare_and_exchange_val_32_acq(mem, newval, oldval) \
   ({ __typeof (*(mem)) __result; \
      __asm __volatile ("\
-	.align 2\n\
 	mova 1f,r0\n\
-	nop\n\
+	.align 2\n\
 	mov r15,r1\n\
-	mov #-8,r15\n\
+	mov #(0f-1f),r15\n\
      0: mov.l @%1,%0\n\
 	cmp/eq %0,%3\n\
 	bf 1f\n\
@@ -133,40 +131,43 @@ typedef uintmax_t uatomic_max_t;
   ({ __typeof (*(mem)) __result, __tmp, __value = (value); \
      if (sizeof (*(mem)) == 1) \
        __asm __volatile ("\
-	  .align 2\n\
 	  mova 1f,r0\n\
+	  .align 2\n\
 	  mov r15,r1\n\
-	  mov #-6,r15\n\
+	  mov #(0f-1f),r15\n\
        0: mov.b @%2,%0\n\
-	  add %0,%1\n\
-	  mov.b %1,@%2\n\
+	  mov %1,r2\n\
+	  add %0,r2\n\
+	  mov.b r2,@%2\n\
        1: mov r1,r15"\
 	: "=&r" (__result), "=&r" (__tmp) : rNOSP (mem), "1" (__value) \
-	: "r0", "r1", "memory"); \
+	: "r0", "r1", "r2", "memory");		       \
      else if (sizeof (*(mem)) == 2) \
        __asm __volatile ("\
-	  .align 2\n\
 	  mova 1f,r0\n\
+	  .align 2\n\
 	  mov r15,r1\n\
-	  mov #-6,r15\n\
+	  mov #(0f-1f),r15\n\
        0: mov.w @%2,%0\n\
-	  add %0,%1\n\
-	  mov.w %1,@%2\n\
+	  mov %1,r2\n\
+	  add %0,r2\n\
+	  mov.w r2,@%2\n\
        1: mov r1,r15"\
 	: "=&r" (__result), "=&r" (__tmp) : rNOSP (mem), "1" (__value) \
-	: "r0", "r1", "memory"); \
+	: "r0", "r1", "r2", "memory"); \
      else if (sizeof (*(mem)) == 4) \
        __asm __volatile ("\
-	  .align 2\n\
 	  mova 1f,r0\n\
+	  .align 2\n\
 	  mov r15,r1\n\
-	  mov #-6,r15\n\
+	  mov #(0f-1f),r15\n\
        0: mov.l @%2,%0\n\
-	  add %0,%1\n\
-	  mov.l %1,@%2\n\
+	  mov %1,r2\n\
+	  add %0,r2\n\
+	  mov.l r2,@%2\n\
        1: mov r1,r15"\
 	: "=&r" (__result), "=&r" (__tmp) : rNOSP (mem), "1" (__value) \
-	: "r0", "r1", "memory"); \
+	: "r0", "r1", "r2", "memory"); \
      else \
        { \
 	 __typeof (mem) memp = (mem); \
@@ -182,37 +183,37 @@ typedef uintmax_t uatomic_max_t;
   (void) ({ __typeof (*(mem)) __tmp, __value = (value); \
 	    if (sizeof (*(mem)) == 1) \
 	      __asm __volatile ("\
-		.align 2\n\
 		mova 1f,r0\n\
 		mov r15,r1\n\
-		mov #-6,r15\n\
+		.align 2\n\
+		mov #(0f-1f),r15\n\
 	     0: mov.b @%1,r2\n\
-		add r2,%0\n\
-		mov.b %0,@%1\n\
+		add %0,r2\n\
+		mov.b r2,@%1\n\
 	     1: mov r1,r15"\
 		: "=&r" (__tmp) : rNOSP (mem), "0" (__value) \
 		: "r0", "r1", "r2", "memory"); \
 	    else if (sizeof (*(mem)) == 2) \
 	      __asm __volatile ("\
-		.align 2\n\
 		mova 1f,r0\n\
 		mov r15,r1\n\
-		mov #-6,r15\n\
+		.align 2\n\
+		mov #(0f-1f),r15\n\
 	     0: mov.w @%1,r2\n\
-		add r2,%0\n\
-		mov.w %0,@%1\n\
+		add %0,r2\n\
+		mov.w r2,@%1\n\
 	     1: mov r1,r15"\
 		: "=&r" (__tmp) : rNOSP (mem), "0" (__value) \
 		: "r0", "r1", "r2", "memory"); \
 	    else if (sizeof (*(mem)) == 4) \
 	      __asm __volatile ("\
-		.align 2\n\
 		mova 1f,r0\n\
 		mov r15,r1\n\
-		mov #-6,r15\n\
+		.align 2\n\
+		mov #(0f-1f),r15\n\
 	     0: mov.l @%1,r2\n\
-		add r2,%0\n\
-		mov.l %0,@%1\n\
+		add %0,r2\n\
+		mov.l r2,@%1\n\
 	     1: mov r1,r15"\
 		: "=&r" (__tmp) : rNOSP (mem), "0" (__value) \
 		: "r0", "r1", "r2", "memory"); \
@@ -233,43 +234,43 @@ typedef uintmax_t uatomic_max_t;
      __typeof (*(mem)) __tmp, __value = (value); \
      if (sizeof (*(mem)) == 1) \
        __asm __volatile ("\
-	  .align 2\n\
 	  mova 1f,r0\n\
 	  mov r15,r1\n\
-	  mov #-6,r15\n\
+	  .align 2\n\
+	  mov #(0f-1f),r15\n\
        0: mov.b @%2,r2\n\
-	  add r2,%1\n\
-	  mov.b %1,@%2\n\
+	  add %1,r2\n\
+	  mov.b r2,@%2\n\
        1: mov r1,r15\n\
-	  shal %1\n\
+	  shal r2\n\
 	  movt %0"\
 	: "=r" (__result), "=&r" (__tmp) : rNOSP (mem), "1" (__value) \
 	: "r0", "r1", "r2", "t", "memory"); \
      else if (sizeof (*(mem)) == 2) \
        __asm __volatile ("\
-	  .align 2\n\
 	  mova 1f,r0\n\
 	  mov r15,r1\n\
-	  mov #-6,r15\n\
+	  .align 2\n\
+	  mov #(0f-1f),r15\n\
        0: mov.w @%2,r2\n\
-	  add r2,%1\n\
-	  mov.w %1,@%2\n\
+	  add %1,r2\n\
+	  mov.w r2,@%2\n\
        1: mov r1,r15\n\
-	  shal %1\n\
+	  shal r2\n\
 	  movt %0"\
 	: "=r" (__result), "=&r" (__tmp) : rNOSP (mem), "1" (__value) \
 	: "r0", "r1", "r2", "t", "memory"); \
      else if (sizeof (*(mem)) == 4) \
        __asm __volatile ("\
-	  .align 2\n\
 	  mova 1f,r0\n\
 	  mov r15,r1\n\
-	  mov #-6,r15\n\
+	  .align 2\n\
+	  mov #(0f-1f),r15\n\
        0: mov.l @%2,r2\n\
-	  add r2,%1\n\
-	  mov.l %1,@%2\n\
+	  add %1,r2\n\
+	  mov.l r2,@%2\n\
        1: mov r1,r15\n\
-	  shal %1\n\
+	  shal r2\n\
 	  movt %0"\
 	: "=r" (__result), "=&r" (__tmp) : rNOSP (mem), "1" (__value) \
 	: "r0", "r1", "r2", "t", "memory"); \
@@ -282,43 +283,43 @@ typedef uintmax_t uatomic_max_t;
      __typeof (*(mem)) __tmp, __value = (value); \
      if (sizeof (*(mem)) == 1) \
        __asm __volatile ("\
-	  .align 2\n\
 	  mova 1f,r0\n\
 	  mov r15,r1\n\
-	  mov #-6,r15\n\
+	  .align 2\n\
+	  mov #(0f-1f),r15\n\
        0: mov.b @%2,r2\n\
-	  add r2,%1\n\
-	  mov.b %1,@%2\n\
+	  add %1,r2\n\
+	  mov.b r2,@%2\n\
        1: mov r1,r15\n\
-	  tst %1,%1\n\
+	  tst r2,r2\n\
 	  movt %0"\
 	: "=r" (__result), "=&r" (__tmp) : rNOSP (mem), "1" (__value) \
 	: "r0", "r1", "r2", "t", "memory"); \
      else if (sizeof (*(mem)) == 2) \
        __asm __volatile ("\
-	  .align 2\n\
 	  mova 1f,r0\n\
 	  mov r15,r1\n\
-	  mov #-6,r15\n\
+	  .align 2\n\
+	  mov #(0f-1f),r15\n\
        0: mov.w @%2,r2\n\
-	  add r2,%1\n\
-	  mov.w %1,@%2\n\
+	  add %1,r2\n\
+	  mov.w r2,@%2\n\
        1: mov r1,r15\n\
-	  tst %1,%1\n\
+	  tst r2,r2\n\
 	  movt %0"\
 	: "=r" (__result), "=&r" (__tmp) : rNOSP (mem), "1" (__value) \
 	: "r0", "r1", "r2", "t", "memory"); \
      else if (sizeof (*(mem)) == 4) \
        __asm __volatile ("\
-	  .align 2\n\
 	  mova 1f,r0\n\
 	  mov r15,r1\n\
-	  mov #-6,r15\n\
+	  .align 2\n\
+	  mov #(0f-1f),r15\n\
        0: mov.l @%2,r2\n\
-	  add r2,%1\n\
-	  mov.l %1,@%2\n\
+	  add %1,r2\n\
+	  mov.l r2,@%2\n\
        1: mov r1,r15\n\
-	  tst %1,%1\n\
+	  tst r2,r2\n\
 	  movt %0"\
 	: "=r" (__result), "=&r" (__tmp) : rNOSP (mem), "1" (__value) \
 	: "r0", "r1", "r2", "t", "memory"); \
@@ -333,10 +334,10 @@ typedef uintmax_t uatomic_max_t;
   (void) ({ unsigned int __mask = 1 << (bit); \
 	    if (sizeof (*(mem)) == 1) \
 	      __asm __volatile ("\
-		.align 2\n\
 		mova 1f,r0\n\
 		mov r15,r1\n\
-		mov #-6,r15\n\
+		.align 2\n\
+		mov #(0f-1f),r15\n\
 	     0: mov.b @%0,r2\n\
 		or %1,r2\n\
 		mov.b r2,@%0\n\
@@ -345,10 +346,10 @@ typedef uintmax_t uatomic_max_t;
 		: "r0", "r1", "r2", "memory"); \
 	    else if (sizeof (*(mem)) == 2) \
 	      __asm __volatile ("\
-		.align 2\n\
 		mova 1f,r0\n\
 		mov r15,r1\n\
-		mov #-6,r15\n\
+		.align 2\n\
+		mov #(0f-1f),r15\n\
 	     0: mov.w @%0,r2\n\
 		or %1,r2\n\
 		mov.w r2,@%0\n\
@@ -357,10 +358,10 @@ typedef uintmax_t uatomic_max_t;
 		: "r0", "r1", "r2", "memory"); \
 	    else if (sizeof (*(mem)) == 4) \
 	      __asm __volatile ("\
-		.align 2\n\
 		mova 1f,r0\n\
 		mov r15,r1\n\
-		mov #-6,r15\n\
+		.align 2\n\
+		mov #(0f-1f),r15\n\
 	     0: mov.l @%0,r2\n\
 		or %1,r2\n\
 		mov.l r2,@%0\n\
@@ -376,49 +377,49 @@ typedef uintmax_t uatomic_max_t;
      unsigned int __result = __mask; \
      if (sizeof (*(mem)) == 1) \
        __asm __volatile ("\
-	  .align 2\n\
 	  mova 1f,r0\n\
-	  nop\n\
+	  .align 2\n\
 	  mov r15,r1\n\
-	  mov #-8,r15\n\
+	  mov #(0f-1f),r15\n\
        0: mov.b @%2,r2\n\
-	  or r2,%1\n\
-	  and r2,%0\n\
-	  mov.b %1,@%2\n\
-       1: mov r1,r15"\
+	  mov r2,r3\n\
+	  or %1,r2\n\
+	  mov.b r2,@%2\n\
+       1: mov r1,r15\n\
+	  and r3,%0"\
 	: "=&r" (__result), "=&r" (__mask) \
 	: rNOSP (mem), "0" (__result), "1" (__mask) \
-	: "r0", "r1", "r2", "memory"); \
+	: "r0", "r1", "r2", "r3", "memory");	\
      else if (sizeof (*(mem)) == 2) \
        __asm __volatile ("\
-	  .align 2\n\
 	  mova 1f,r0\n\
-	  nop\n\
+	  .align 2\n\
 	  mov r15,r1\n\
-	  mov #-8,r15\n\
+	  mov #(0f-1f),r15\n\
        0: mov.w @%2,r2\n\
-	  or r2,%1\n\
-	  and r2,%0\n\
+	  mov r2,r3\n\
+	  or %1,r2\n\
 	  mov.w %1,@%2\n\
-       1: mov r1,r15"\
+       1: mov r1,r15\n\
+	  and r3,%0"\
 	: "=&r" (__result), "=&r" (__mask) \
 	: rNOSP (mem), "0" (__result), "1" (__mask) \
-	: "r0", "r1", "r2", "memory"); \
+	: "r0", "r1", "r2", "r3", "memory"); \
      else if (sizeof (*(mem)) == 4) \
        __asm __volatile ("\
-	  .align 2\n\
 	  mova 1f,r0\n\
-	  nop\n\
+	  .align 2\n\
 	  mov r15,r1\n\
-	  mov #-8,r15\n\
+	  mov #(0f-1f),r15\n\
        0: mov.l @%2,r2\n\
+	  mov r2,r3\n\
 	  or r2,%1\n\
-	  and r2,%0\n\
 	  mov.l %1,@%2\n\
-       1: mov r1,r15"\
+       1: mov r1,r15\n\
+	  and r3,%0"\
 	: "=&r" (__result), "=&r" (__mask) \
 	: rNOSP (mem), "0" (__result), "1" (__mask) \
-	: "r0", "r1", "r2", "memory"); \
+	: "r0", "r1", "r2", "r3", "memory"); \
      else \
        abort (); \
      __result; })
diff --git a/libc/sysdeps/unix/sysv/linux/sh/makecontext.S b/libc/sysdeps/unix/sysv/linux/sh/makecontext.S
index 0a9e07954..a04bc9f63 100644
--- a/libc/sysdeps/unix/sysv/linux/sh/makecontext.S
+++ b/libc/sysdeps/unix/sysv/linux/sh/makecontext.S
@@ -1,5 +1,5 @@
 /* Create new context.
-   Copyright (C) 2005 Free Software Foundation, Inc.
+   Copyright (C) 2005-2012 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
@@ -17,6 +17,7 @@
    <http://www.gnu.org/licenses/>.  */
 
 #include <sysdep.h>
+#include <abort-instr.h>
 
 #include "ucontext_i.h"
 
@@ -33,44 +34,44 @@
 	.align	5
 ENTRY(__makecontext)
 	mov	#4, r3
-	mov.l	@(oSS_SP,r4), r1
-	mov.l	@(oSS_SIZE,r4), r2
-	add	r1, r2
-	cmp/gt	r6, r3
+	mov.l	@(oSS_SP,r4), r1	/* r1 <- ucb->stack_base */
+	mov.l	@(oSS_SIZE,r4), r2	/* r2 <- ucb->stack_size */
+	add	r1, r2			/* r2 <- stack_top */
+	cmp/gt	r3, r6			/* argc > 4? */
 	bf/s	1f
-	 shlr2	r2
+	 shlr2	r2			/* r2 <- stack_top / 4 */
 	sub	r6, r2
 	add	r3, r2
 1:
-	shll2	r2
+	shll2	r2		/* r2 <- stack_top - ((argc > 4) ? 4 * (argc - 4) : 0 */
 	mov	#oR15, r0
 	mov.l	@(oLINK,r4), r1
-	mov.l	r2, @(r0,r4)
-	mov.l	r1, @(oR8,r4)
+	mov.l	r2, @(r0,r4)	/* ucp->r15 <- r2 */
+	mov.l	r1, @(oR8,r4)	/* ucp->r8 <- ucp->uc_link */
 	mov	#oPC, r0
-	mov.l	r5, @(r0,r4)
+	mov.l	r5, @(r0,r4)	/* ucp->PC <- func */
 
-	cmp/pl	r6
+	cmp/pl	r6		/* argc > 0? */
 	bf/s	.L1
 	 dt	r6
-	mov.l	r7, @(oR4,r4)
-	cmp/pl	r6
+	mov.l	r7, @(oR4,r4)	/* ucp->r4 <- argv[0] */
+	cmp/pl	r6		/* argc > 1? */
 	bf/s	.L1
 	 dt	r6
 	mov.l	@(0,r15), r1
-	mov.l	r1, @(oR5,r4)
-	cmp/pl	r6
+	mov.l	r1, @(oR5,r4)	/* ucp->r5 <- argv[1] */
+	cmp/pl	r6		/* argc > 2? */
 	bf/s	.L1
 	 dt	r6
 	mov.l	@(4,r15), r1
-	mov.l	r1, @(oR6,r4)
-	cmp/pl	r6
+	mov.l	r1, @(oR6,r4)	/* ucp->r6 <- argv[2] */
+	cmp/pl	r6		/* argc > 3? */
 	bf/s	.L1
 	 dt	r6
 	mov.l	@(8,r15), r1
-	mov.l	r1, @(oR7,r4)
+	mov.l	r1, @(oR7,r4)	/* ucp->r7 <- argv[3] */
 	mov	#12,r0
-.L0:
+.L0:				/* Save remaining argv[] on the stack.  */
 	cmp/pl	r6
 	bf/s	.L1
 	 dt	r6
@@ -87,7 +88,7 @@ ENTRY(__makecontext)
 #endif
 	add	#oPR, r4
 	rts
-	 mov.l	r0, @r4
+	 mov.l	r0, @r4		/* ucp->pr <- exitcode */
 #ifndef PIC
 	.align	2
 .L2:
@@ -96,49 +97,63 @@ ENTRY(__makecontext)
 	cfi_endproc
 
 	.align	5
+	cfi_startproc
 .Lexitcode:
-	tst	r8, r8
-	bt/s	2f
-	 mov	r8, r4
 #ifdef PIC
+	mov.l	r12, @-r15
+	cfi_adjust_cfa_offset (4)
+	cfi_rel_offset (r12, 0)
 	mova	.Lgot, r0
 	mov.l	.Lgot, r12
 	add	r0, r12
-	mov.l	.L3, r1
+#endif
+	tst	r8, r8		/* ucb->uc_link == NULL? */
+	bt/s	2f
+	 mov	r8, r4		/* r4 <- ucb->uc_link */
+	mov.l	.Lsetcontext, r1
+	sts.l	pr, @-r15
+	cfi_adjust_cfa_offset (4)
+	cfi_rel_offset (pr, 0)
+#ifdef PIC
 	bsrf	r1
 .LPCS0:
 	 nop
 #else
-	mov.l	.L3, r1
 	jsr	@r1
 	 nop
 #endif
+        /* Restore to keep CFI/CFA balanced.  */
+	lds.l	@r15+, pr
+	cfi_adjust_cfa_offset (-4)
+	cfi_restore (pr)
+	/* If this returns (which can happen if the syscall fails) we'll exit
+	   the program with the return error value (-1).  */
+
 2:
-	mov.l	.L4, r1
+	mov.l	.Lexit, r1
 #ifdef PIC
 	add	r12, r1
 #endif
 	jsr	@r1
 	 mov	r0, r4
-0:
-	bra	0b
-	 nop
+	/* The 'exit' call should never return.  In case it does cause the
+	   process to terminate.  */
+	ABORT_INSTRUCTION_ASM
 
 	.align	2
 #ifdef PIC
 .Lgot:
 	.long	_GLOBAL_OFFSET_TABLE_
-.L3:
+.Lsetcontext:
 	.long	__setcontext@PLT-(.LPCS0+2-(.))
-.L4:
+.Lexit:
 	.long	HIDDEN_JUMPTARGET(exit)@GOTOFF
 #else
-.L3:
+.Lsetcontext:
 	.long	__setcontext
-.L4:
+.Lexit:
 	.long	HIDDEN_JUMPTARGET(exit)
 #endif
-	cfi_startproc
 PSEUDO_END(__makecontext)
 
 weak_alias (__makecontext, makecontext)
diff --git a/libc/sysdeps/unix/sysv/linux/sh/nptl/libc.abilist b/libc/sysdeps/unix/sysv/linux/sh/nptl/libc.abilist
index 7c1425f89..c474f415c 100644
--- a/libc/sysdeps/unix/sysv/linux/sh/nptl/libc.abilist
+++ b/libc/sysdeps/unix/sysv/linux/sh/nptl/libc.abilist
@@ -79,6 +79,7 @@ GLIBC_2.16
  aligned_alloc F
  c16rtomb F
  c32rtomb F
+ fanotify_mark F
  getauxval F
  mbrtoc16 F
  mbrtoc32 F
diff --git a/libc/sysdeps/unix/sysv/linux/sh/sigaltstack-offsets.sym b/libc/sysdeps/unix/sysv/linux/sh/sigaltstack-offsets.sym
new file mode 100644
index 000000000..f73446941
--- /dev/null
+++ b/libc/sysdeps/unix/sysv/linux/sh/sigaltstack-offsets.sym
@@ -0,0 +1,13 @@
+#include <stddef.h>
+#include <signal.h>
+
+--
+
+#define sigaltstack(member)	offsetof (stack_t, member)
+
+sizeSS				sizeof (stack_t)
+oSS_SP				sigaltstack (ss_sp)
+oSS_FLAGS			sigaltstack (ss_flags)
+oSS_SIZE			sigaltstack (ss_size)
+
+SS_ONSTACK
diff --git a/libc/sysdeps/unix/sysv/linux/sh/syscalls.list b/libc/sysdeps/unix/sysv/linux/sh/syscalls.list
index be9ffed22..faffe377e 100644
--- a/libc/sysdeps/unix/sysv/linux/sh/syscalls.list
+++ b/libc/sysdeps/unix/sysv/linux/sh/syscalls.list
@@ -3,3 +3,5 @@
 waitpid		-	waitpid		Ci:ipi	__waitpid	waitpid	__libc_waitpid
 
 prlimit64	EXTRA	prlimit64	i:iipp	prlimit64
+
+fanotify_mark	EXTRA	fanotify_mark	i:iiiiis	__fanotify_mark	fanotify_mark@@GLIBC_2.16
diff --git a/libc/sysdeps/unix/sysv/linux/sh/sysdep.h b/libc/sysdeps/unix/sysv/linux/sh/sysdep.h
index 5215a845d..ce72c66a7 100644
--- a/libc/sysdeps/unix/sysv/linux/sh/sysdep.h
+++ b/libc/sysdeps/unix/sysv/linux/sh/sysdep.h
@@ -1,5 +1,4 @@
-/* Copyright (C) 1992,1993,1995-2000,2002-2006,2009,2011
-	Free Software Foundation, Inc.
+/* Copyright (C) 1992-2012 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
    Contributed by Ulrich Drepper, <drepper@gnu.ai.mit.edu>, August 1995.
    Changed by Kaz Kojima, <kkojima@rr.iij4u.or.jp>.
@@ -100,11 +99,15 @@
 # if RTLD_PRIVATE_ERRNO
 #  define SYSCALL_ERROR_HANDLER	\
 	neg r0,r1; \
+	mov r12,r2; \
+	cfi_register (r12, r2); \
 	mov.l 0f,r12; \
 	mova 0f,r0; \
 	add r0,r12; \
 	mov.l 1f,r0; \
 	mov.l r1,@(r0,r12); \
+	mov r2,r12; \
+	cfi_restore (r12); \
 	bra .Lpseudo_end; \
 	 mov _IMM1,r0; \
 	.align 2; \
@@ -121,6 +124,7 @@
 #  define SYSCALL_ERROR_HANDLER \
 	neg r0,r1; \
 	mov r12,r2; \
+	cfi_register (r12, r2); \
 	mov.l 0f,r12; \
 	mova 0f,r0; \
 	add r0,r12; \
@@ -128,6 +132,7 @@
 	stc gbr, r4; \
 	mov.l @(r0,r12),r0; \
 	mov r2,r12; \
+	cfi_restore (r12); \
 	add r4,r0; \
 	mov.l r1,@r0; \
 	bra .Lpseudo_end; \
@@ -140,12 +145,14 @@
 #  define SYSCALL_ERROR_HANDLER						      \
 	neg r0,r1; \
 	mov r12,r2; \
+	cfi_register (r12, r2); \
 	mov.l 0f,r12; \
 	mova 0f,r0; \
 	add r0,r12; \
 	mov.l 1f,r0; \
 	mov.l @(r0,r12),r0; \
 	mov r2,r12; \
+	cfi_restore (r12); \
 	mov.l r1,@r0; \
 	bra .Lpseudo_end; \
 	 mov _IMM1,r0; \