001-git-2015-05-25.patch

From e4ddd92318e50d8fad1f91fc07c5f6bacb9d6b21 Mon Sep 17 00:00:00 2001
From: Daniel Golle <daniel@makrotopia.org>
Date: Mon May 25 16:02:49 2015 -0400
Subject: [PATCH] squashed commits since v1.1.9

967bcbf mark mips crt code as code
7b75c48 mark mips cancellable syscall code as code
0e0e494 simplify/shrink relocation processing in dynamic linker stage 1
09db855 remove processing of DT_JMPREL from dynamic linker stage 1 bootstrap
9f26ebd fix stack alignment code in mips crt_arch.h
63caf1d add .text section directive to all crt_arch.h files missing it
3b0e832 remove outdated and misleading comment in iconv.c
39b8ce6 in iconv_open, accept "CHAR" and "" as aliases for "UTF-8"
c648cef fix inconsistency in a_and and a_or argument types on x86[_64]
390f93e inline llsc atomics when building for sh4a
c093e2e reprocess libc/ldso RELA relocations in stage 3 of dynamic linking
43e9f65 fix null pointer dereference in dcngettext under specific conditions
68630b5 eliminate costly tricks to avoid TLS access for current locale state
707d7c3 in i386 __set_thread_area, don't assume %gs register is initially zero
c0f10cf make arm reloc.h CRTJMP macro compatible with thumb
83340c7 make arm crt_arch.h compatible with thumb code generation
---
 arch/aarch64/crt_arch.h             |   1 +
 arch/arm/crt_arch.h                 |  11 +--
 arch/arm/reloc.h                    |   5 ++
 arch/i386/atomic.h                  |   8 +--
 arch/microblaze/crt_arch.h          |   1 +
 arch/mips/crt_arch.h                |   5 +-
 arch/or1k/crt_arch.h                |   1 +
 arch/powerpc/crt_arch.h             |   1 +
 arch/sh/atomic.h                    |  83 ++++++++++++++++++++++
 arch/sh/crt_arch.h                  |   1 +
 arch/sh/src/atomic.c                | 135 ++++++++++++------------------------
 arch/x32/atomic.h                   |   8 +--
 arch/x86_64/atomic.h                |   8 +--
 crt/mips/crt1.s                     |   2 +
 crt/mips/crti.s                     |   2 +
 src/internal/libc.h                 |   2 -
 src/internal/locale_impl.h          |   6 +-
 src/ldso/dlstart.c                  |  41 +++++------
 src/ldso/dynlink.c                  |   2 +-
 src/locale/dcngettext.c             |   2 +-
 src/locale/iconv.c                  |   9 +--
 src/locale/setlocale.c              |   7 +-
 src/locale/uselocale.c              |  10 +--
 src/thread/i386/__set_thread_area.s |  13 ++--
 src/thread/mips/syscall_cp.s        |   3 +
 src/thread/pthread_create.c         |   6 --
 26 files changed, 200 insertions(+), 173 deletions(-)

diff --git a/arch/aarch64/crt_arch.h b/arch/aarch64/crt_arch.h
index 3a4b321..b64fb3d 100644
--- a/arch/aarch64/crt_arch.h
+++ b/arch/aarch64/crt_arch.h
@@ -1,4 +1,5 @@
 __asm__(
+".text \n"
 ".global " START "\n"
 ".type " START ",%function\n"
 START ":\n"
diff --git a/arch/arm/crt_arch.h b/arch/arm/crt_arch.h
index d1f9a66..99508b1 100644
--- a/arch/arm/crt_arch.h
+++ b/arch/arm/crt_arch.h
@@ -1,15 +1,18 @@
 __asm__(
+".text \n"
 ".global " START " \n"
 ".type " START ",%function \n"
 START ": \n"
 "	mov fp, #0 \n"
 "	mov lr, #0 \n"
-"	mov a1, sp \n"
 "	ldr a2, 1f \n"
-"2:	add a2, pc, a2 \n"
-"	and sp, sp, #-16 \n"
+"	add a2, pc, a2 \n"
+"	mov a1, sp \n"
+"2:	and ip, a1, #-16 \n"
+"	mov sp, ip \n"
 "	bl " START "_c \n"
 ".weak _DYNAMIC \n"
 ".hidden _DYNAMIC \n"
-"1:	.word _DYNAMIC-2b-8 \n"
+".align 2 \n"
+"1:	.word _DYNAMIC-2b \n"
 );
diff --git a/arch/arm/reloc.h b/arch/arm/reloc.h
index dec0031..e1ef350 100644
--- a/arch/arm/reloc.h
+++ b/arch/arm/reloc.h
@@ -28,5 +28,10 @@
 #define REL_TPOFF       R_ARM_TLS_TPOFF32
 //#define REL_TLSDESC     R_ARM_TLS_DESC
 
+#ifdef __thumb__
+#define CRTJMP(pc,sp) __asm__ __volatile__( \
+	"mov sp,%1 ; bx %0" : : "r"(pc), "r"(sp) : "memory" )
+#else
 #define CRTJMP(pc,sp) __asm__ __volatile__( \
 	"mov sp,%1 ; tst %0,#1 ; moveq pc,%0 ; bx %0" : : "r"(pc), "r"(sp) : "memory" )
+#endif
diff --git a/arch/i386/atomic.h b/arch/i386/atomic.h
index 4fe7bde..95fecbd 100644
--- a/arch/i386/atomic.h
+++ b/arch/i386/atomic.h
@@ -50,16 +50,16 @@ static inline int a_cas(volatile int *p, int t, int s)
 	return t;
 }
 
-static inline void a_or(volatile void *p, int v)
+static inline void a_or(volatile int *p, int v)
 {
 	__asm__( "lock ; orl %1, %0"
-		: "=m"(*(int *)p) : "r"(v) : "memory" );
+		: "=m"(*p) : "r"(v) : "memory" );
 }
 
-static inline void a_and(volatile void *p, int v)
+static inline void a_and(volatile int *p, int v)
 {
 	__asm__( "lock ; andl %1, %0"
-		: "=m"(*(int *)p) : "r"(v) : "memory" );
+		: "=m"(*p) : "r"(v) : "memory" );
 }
 
 static inline int a_swap(volatile int *x, int v)
diff --git a/arch/microblaze/crt_arch.h b/arch/microblaze/crt_arch.h
index ada98c8..bca78bf 100644
--- a/arch/microblaze/crt_arch.h
+++ b/arch/microblaze/crt_arch.h
@@ -1,4 +1,5 @@
 __asm__(
+".text \n"
 ".global " START " \n"
 ".align  2 \n"
 START ": \n"
diff --git a/arch/mips/crt_arch.h b/arch/mips/crt_arch.h
index 9a60be0..21e139b 100644
--- a/arch/mips/crt_arch.h
+++ b/arch/mips/crt_arch.h
@@ -1,6 +1,7 @@
 __asm__(
 ".set push\n"
 ".set noreorder\n"
+".text \n"
 ".global _" START "\n"
 ".global " START "\n"
 ".type   _" START ", @function\n"
@@ -21,8 +22,8 @@ __asm__(
 "	addu $5, $5, $gp \n"
 "	lw $25, 4($ra) \n"
 "	addu $25, $25, $gp \n"
-"	subu $sp, $sp, 16 \n"
+"	and $sp, $sp, -8 \n"
 "	jalr $25 \n"
-"	 and $sp, $sp, -8 \n"
+"	 subu $sp, $sp, 16 \n"
 ".set pop \n"
 );
diff --git a/arch/or1k/crt_arch.h b/arch/or1k/crt_arch.h
index 8441556..9e310ca 100644
--- a/arch/or1k/crt_arch.h
+++ b/arch/or1k/crt_arch.h
@@ -1,4 +1,5 @@
 __asm__(
+".text \n"
 ".global " START " \n"
 ".align  4 \n"
 START ": \n"
diff --git a/arch/powerpc/crt_arch.h b/arch/powerpc/crt_arch.h
index ec3cd29..9b65886 100644
--- a/arch/powerpc/crt_arch.h
+++ b/arch/powerpc/crt_arch.h
@@ -1,4 +1,5 @@
 __asm__(
+".text \n"
 ".global " START " \n"
 ".type   " START ", %function \n"
 START ": \n"
diff --git a/arch/sh/atomic.h b/arch/sh/atomic.h
index a1d22e4..f2e6dac 100644
--- a/arch/sh/atomic.h
+++ b/arch/sh/atomic.h
@@ -22,6 +22,88 @@ static inline int a_ctz_64(uint64_t x)
 	return a_ctz_l(y);
 }
 
+#define LLSC_CLOBBERS "r0", "t", "memory"
+#define LLSC_START(mem) "synco\n"  \
+	"0:	movli.l @" mem ", r0\n"
+#define LLSC_END(mem)              \
+	"1:	movco.l r0, @" mem "\n"    \
+	"	bf 0b\n"                   \
+	"	synco\n"
+
+static inline int __sh_cas_llsc(volatile int *p, int t, int s)
+{
+	int old;
+	__asm__ __volatile__(
+		LLSC_START("%1")
+		"	mov r0, %0\n"
+		"	cmp/eq %0, %2\n"
+		"	bf 1f\n"
+		"	mov %3, r0\n"
+		LLSC_END("%1")
+		: "=&r"(old) : "r"(p), "r"(t), "r"(s) : LLSC_CLOBBERS);
+	return old;
+}
+
+static inline int __sh_swap_llsc(volatile int *x, int v)
+{
+	int old;
+	__asm__ __volatile__(
+		LLSC_START("%1")
+		"	mov r0, %0\n"
+		"	mov %2, r0\n"
+		LLSC_END("%1")
+		: "=&r"(old) : "r"(x), "r"(v) : LLSC_CLOBBERS);
+	return old;
+}
+
+static inline int __sh_fetch_add_llsc(volatile int *x, int v)
+{
+	int old;
+	__asm__ __volatile__(
+		LLSC_START("%1")
+		"	mov r0, %0\n"
+		"	add %2, r0\n"
+		LLSC_END("%1")
+		: "=&r"(old) : "r"(x), "r"(v) : LLSC_CLOBBERS);
+	return old;
+}
+
+static inline void __sh_store_llsc(volatile int *p, int x)
+{
+	__asm__ __volatile__(
+		"	synco\n"
+		"	mov.l %1, @%0\n"
+		"	synco\n"
+		: : "r"(p), "r"(x) : "memory");
+}
+
+static inline void __sh_and_llsc(volatile int *x, int v)
+{
+	__asm__ __volatile__(
+		LLSC_START("%0")
+		"	and %1, r0\n"
+		LLSC_END("%0")
+		: : "r"(x), "r"(v) : LLSC_CLOBBERS);
+}
+
+static inline void __sh_or_llsc(volatile int *x, int v)
+{
+	__asm__ __volatile__(
+		LLSC_START("%0")
+		"	or %1, r0\n"
+		LLSC_END("%0")
+		: : "r"(x), "r"(v) : LLSC_CLOBBERS);
+}
+
+#ifdef __SH4A__
+#define a_cas(p,t,s)     __sh_cas_llsc(p,t,s)
+#define a_swap(x,v)      __sh_swap_llsc(x,v)
+#define a_fetch_add(x,v) __sh_fetch_add_llsc(x, v)
+#define a_store(x,v)     __sh_store_llsc(x, v)
+#define a_and(x,v)       __sh_and_llsc(x, v)
+#define a_or(x,v)        __sh_or_llsc(x, v)
+#else
+
 int  __sh_cas(volatile int *, int, int);
 int  __sh_swap(volatile int *, int);
 int  __sh_fetch_add(volatile int *, int);
@@ -35,6 +117,7 @@ void __sh_or(volatile int *, int);
 #define a_store(x,v)     __sh_store(x, v)
 #define a_and(x,v)       __sh_and(x, v)
 #define a_or(x,v)        __sh_or(x, v)
+#endif
 
 static inline void *a_cas_p(volatile void *p, void *t, void *s)
 {
diff --git a/arch/sh/crt_arch.h b/arch/sh/crt_arch.h
index a873ffd..f890710 100644
--- a/arch/sh/crt_arch.h
+++ b/arch/sh/crt_arch.h
@@ -1,4 +1,5 @@
 __asm__(
+".text \n"
 ".global " START " \n"
 START ": \n"
 "	mova 1f, r0 \n"
diff --git a/arch/sh/src/atomic.c b/arch/sh/src/atomic.c
index 1339567..f8c615f 100644
--- a/arch/sh/src/atomic.c
+++ b/arch/sh/src/atomic.c
@@ -1,12 +1,7 @@
-#include "libc.h"
+#ifndef __SH4A__
 
-#define LLSC_CLOBBERS   "r0", "t", "memory"
-#define LLSC_START(mem) "synco\n"  \
-	"0:	movli.l @" mem ", r0\n"
-#define LLSC_END(mem)              \
-	"1:	movco.l r0, @" mem "\n"    \
-	"	bf 0b\n"                   \
-	"	synco\n"
+#include "atomic.h"
+#include "libc.h"
 
 /* gusa is a hack in the kernel which lets you create a sequence of instructions
  * which will be restarted if the process is preempted in the middle of the
@@ -34,114 +29,74 @@
 
 int __sh_cas(volatile int *p, int t, int s)
 {
+	if (__hwcap & CPU_HAS_LLSC) return __sh_cas_llsc(p, t, s);
+
 	int old;
-	if (__hwcap & CPU_HAS_LLSC) {
-		__asm__ __volatile__(
-			LLSC_START("%1")
-			"	mov r0, %0\n"
-			"	cmp/eq %0, %2\n"
-			"	bf 1f\n"
-			"	mov %3, r0\n"
-			LLSC_END("%1")
-			: "=&r"(old) : "r"(p), "r"(t), "r"(s) : LLSC_CLOBBERS);
-	} else {
-		__asm__ __volatile__(
-			GUSA_START_EVEN("%1", "%0")
-			"	cmp/eq %0, %2\n"
-			"	bf 1f\n"
-			GUSA_END("%1", "%3")
-			: "=&r"(old) : "r"(p), "r"(t), "r"(s) : GUSA_CLOBBERS, "t");
-	}
+	__asm__ __volatile__(
+		GUSA_START_EVEN("%1", "%0")
+		"	cmp/eq %0, %2\n"
+		"	bf 1f\n"
+		GUSA_END("%1", "%3")
+		: "=&r"(old) : "r"(p), "r"(t), "r"(s) : GUSA_CLOBBERS, "t");
 	return old;
 }
 
 int __sh_swap(volatile int *x, int v)
 {
+	if (__hwcap & CPU_HAS_LLSC) return __sh_swap_llsc(x, v);
+
 	int old;
-	if (__hwcap & CPU_HAS_LLSC) {
-		__asm__ __volatile__(
-			LLSC_START("%1")
-			"	mov r0, %0\n"
-			"	mov %2, r0\n"
-			LLSC_END("%1")
-			: "=&r"(old) : "r"(x), "r"(v) : LLSC_CLOBBERS);
-	} else {
-		__asm__ __volatile__(
-			GUSA_START_EVEN("%1", "%0")
-			GUSA_END("%1", "%2")
-			: "=&r"(old) : "r"(x), "r"(v) : GUSA_CLOBBERS);
-	}
+	__asm__ __volatile__(
+		GUSA_START_EVEN("%1", "%0")
+		GUSA_END("%1", "%2")
+		: "=&r"(old) : "r"(x), "r"(v) : GUSA_CLOBBERS);
 	return old;
 }
 
 int __sh_fetch_add(volatile int *x, int v)
 {
+	if (__hwcap & CPU_HAS_LLSC) return __sh_fetch_add_llsc(x, v);
+
 	int old, dummy;
-	if (__hwcap & CPU_HAS_LLSC) {
-		__asm__ __volatile__(
-			LLSC_START("%1")
-			"	mov r0, %0\n"
-			"	add %2, r0\n"
-			LLSC_END("%1")
-			: "=&r"(old) : "r"(x), "r"(v) : LLSC_CLOBBERS);
-	} else {
-		__asm__ __volatile__(
-			GUSA_START_EVEN("%2", "%0")
-			"	mov %0, %1\n"
-			"	add %3, %1\n"
-			GUSA_END("%2", "%1")
-			: "=&r"(old), "=&r"(dummy) : "r"(x), "r"(v) : GUSA_CLOBBERS);
-	}
+	__asm__ __volatile__(
+		GUSA_START_EVEN("%2", "%0")
+		"	mov %0, %1\n"
+		"	add %3, %1\n"
+		GUSA_END("%2", "%1")
+		: "=&r"(old), "=&r"(dummy) : "r"(x), "r"(v) : GUSA_CLOBBERS);
 	return old;
 }
 
 void __sh_store(volatile int *p, int x)
 {
-	if (__hwcap & CPU_HAS_LLSC) {
-		__asm__ __volatile__(
-			"	synco\n"
-			"	mov.l %1, @%0\n"
-			"	synco\n"
-			: : "r"(p), "r"(x) : "memory");
-	} else {
-		__asm__ __volatile__(
-			"	mov.l %1, @%0\n"
-			: : "r"(p), "r"(x) : "memory");
-	}
+	if (__hwcap & CPU_HAS_LLSC) return __sh_store_llsc(p, x);
+	__asm__ __volatile__(
+		"	mov.l %1, @%0\n"
+		: : "r"(p), "r"(x) : "memory");
 }
 
 void __sh_and(volatile int *x, int v)
 {
+	if (__hwcap & CPU_HAS_LLSC) return __sh_and_llsc(x, v);
+
 	int dummy;
-	if (__hwcap & CPU_HAS_LLSC) {
-		__asm__ __volatile__(
-			LLSC_START("%0")
-			"	and %1, r0\n"
-			LLSC_END("%0")
-			: : "r"(x), "r"(v) : LLSC_CLOBBERS);
-	} else {
-		__asm__ __volatile__(
-			GUSA_START_ODD("%1", "%0")
-			"	and %2, %0\n"
-			GUSA_END("%1", "%0")
-			: "=&r"(dummy) : "r"(x), "r"(v) : GUSA_CLOBBERS);
-	}
+	__asm__ __volatile__(
+		GUSA_START_ODD("%1", "%0")
+		"	and %2, %0\n"
+		GUSA_END("%1", "%0")
+		: "=&r"(dummy) : "r"(x), "r"(v) : GUSA_CLOBBERS);
 }
 
 void __sh_or(volatile int *x, int v)
 {
+	if (__hwcap & CPU_HAS_LLSC) return __sh_or_llsc(x, v);
+
 	int dummy;
-	if (__hwcap & CPU_HAS_LLSC) {
-		__asm__ __volatile__(
-			LLSC_START("%0")
-			"	or %1, r0\n"
-			LLSC_END("%0")
-			: : "r"(x), "r"(v) : LLSC_CLOBBERS);
-	} else {
-		__asm__ __volatile__(
-			GUSA_START_ODD("%1", "%0")
-			"	or %2, %0\n"
-			GUSA_END("%1", "%0")
-			: "=&r"(dummy) : "r"(x), "r"(v) : GUSA_CLOBBERS);
-	}
+	__asm__ __volatile__(
+		GUSA_START_ODD("%1", "%0")
+		"	or %2, %0\n"
+		GUSA_END("%1", "%0")
+		: "=&r"(dummy) : "r"(x), "r"(v) : GUSA_CLOBBERS);
 }
+
+#endif
diff --git a/arch/x32/atomic.h b/arch/x32/atomic.h
index 333098c..b2014cc 100644
--- a/arch/x32/atomic.h
+++ b/arch/x32/atomic.h
@@ -47,16 +47,16 @@ static inline int a_cas(volatile int *p, int t, int s)
 	return t;
 }
 
-static inline void a_or(volatile void *p, int v)
+static inline void a_or(volatile int *p, int v)
 {
 	__asm__( "lock ; or %1, %0"
-		: "=m"(*(int *)p) : "r"(v) : "memory" );
+		: "=m"(*p) : "r"(v) : "memory" );
 }
 
-static inline void a_and(volatile void *p, int v)
+static inline void a_and(volatile int *p, int v)
 {
 	__asm__( "lock ; and %1, %0"
-		: "=m"(*(int *)p) : "r"(v) : "memory" );
+		: "=m"(*p) : "r"(v) : "memory" );
 }
 
 static inline int a_swap(volatile int *x, int v)
diff --git a/arch/x86_64/atomic.h b/arch/x86_64/atomic.h
index 333098c..b2014cc 100644
--- a/arch/x86_64/atomic.h
+++ b/arch/x86_64/atomic.h
@@ -47,16 +47,16 @@ static inline int a_cas(volatile int *p, int t, int s)
 	return t;
 }
 
-static inline void a_or(volatile void *p, int v)
+static inline void a_or(volatile int *p, int v)
 {
 	__asm__( "lock ; or %1, %0"
-		: "=m"(*(int *)p) : "r"(v) : "memory" );
+		: "=m"(*p) : "r"(v) : "memory" );
 }
 
-static inline void a_and(volatile void *p, int v)
+static inline void a_and(volatile int *p, int v)
 {
 	__asm__( "lock ; and %1, %0"
-		: "=m"(*(int *)p) : "r"(v) : "memory" );
+		: "=m"(*p) : "r"(v) : "memory" );
 }
 
 static inline int a_swap(volatile int *x, int v)
diff --git a/crt/mips/crt1.s b/crt/mips/crt1.s
index 093d7d5..794b6f7 100644
--- a/crt/mips/crt1.s
+++ b/crt/mips/crt1.s
@@ -4,6 +4,8 @@
 .weak  _fini
 .global __start
 .global _start
+.type __start,@function
+.type _start,@function
 __start:
 _start:
 	subu    $fp, $fp, $fp            # Zero the frame pointer.
diff --git a/crt/mips/crti.s b/crt/mips/crti.s
index b1593d1..39dee38 100644
--- a/crt/mips/crti.s
+++ b/crt/mips/crti.s
@@ -2,6 +2,7 @@
 
 .section .init
 .global _init
+.type _init,@function
 .align 2
 _init:
 	subu $sp,$sp,32
@@ -10,6 +11,7 @@ _init:
 
 .section .fini
 .global _fini
+.type _fini,@function
 .align 2
 _fini:
 	subu $sp,$sp,32
diff --git a/src/internal/libc.h b/src/internal/libc.h
index 51ee186..212f0e8 100644
--- a/src/internal/libc.h
+++ b/src/internal/libc.h
@@ -23,8 +23,6 @@ struct __libc {
 	volatile int ofl_lock[2];
 	size_t tls_size;
 	size_t page_size;
-	volatile int uselocale_cnt;
-	volatile int bytelocale_cnt_minus_1;
 	struct __locale_struct global_locale;
 };
 
diff --git a/src/internal/locale_impl.h b/src/internal/locale_impl.h
index 9142f0c..5aebbf6 100644
--- a/src/internal/locale_impl.h
+++ b/src/internal/locale_impl.h
@@ -20,11 +20,9 @@ const char *__lctrans_cur(const char *);
 #define LCTRANS(msg, lc, loc) __lctrans(msg, (loc)->cat[(lc)-2])
 #define LCTRANS_CUR(msg) __lctrans_cur(msg)
 
-#define CURRENT_LOCALE \
-	(libc.uselocale_cnt ? __pthread_self()->locale : &libc.global_locale)
+#define CURRENT_LOCALE (__pthread_self()->locale)
 
-#define CURRENT_UTF8 \
-	(libc.bytelocale_cnt_minus_1<0 || __pthread_self()->locale->ctype_utf8)
+#define CURRENT_UTF8 (__pthread_self()->locale->ctype_utf8)
 
 #undef MB_CUR_MAX
 #define MB_CUR_MAX (CURRENT_UTF8 ? 4 : 1)
diff --git a/src/ldso/dlstart.c b/src/ldso/dlstart.c
index 46f4a5c..5f84465 100644
--- a/src/ldso/dlstart.c
+++ b/src/ldso/dlstart.c
@@ -56,31 +56,22 @@ void _dlstart_c(size_t *sp, size_t *dynv)
 		for (i=0; i<local_cnt; i++) got[i] += (size_t)base;
 	}
 
-	/* The use of the reloc_info structure and nested loops is a trick
-	 * to work around the fact that we can't necessarily make function
-	 * calls yet. Each struct in the array serves like the arguments
-	 * to a function call. */
-	struct {
-		void *rel;
-		size_t size;
-		size_t stride;
-	} reloc_info[] = {
-		{ base+dyn[DT_JMPREL], dyn[DT_PLTRELSZ], 2+(dyn[DT_PLTREL]==DT_RELA) },
-		{ base+dyn[DT_REL], dyn[DT_RELSZ], 2 },
-		{ base+dyn[DT_RELA], dyn[DT_RELASZ], 3 },
-		{ 0, 0, 0 }
-	};
-
-	for (i=0; reloc_info[i].stride; i++) {
-		size_t *rel = reloc_info[i].rel;
-		size_t rel_size = reloc_info[i].size;
-		size_t stride = reloc_info[i].stride;
-		for (; rel_size; rel+=stride, rel_size-=stride*sizeof(size_t)) {
-			if (!IS_RELATIVE(rel[1])) continue;
-			size_t *rel_addr = (void *)(base + rel[0]);
-			size_t addend = stride==3 ? rel[2] : *rel_addr;
-			*rel_addr = (size_t)base + addend;
-		}
+	size_t *rel, rel_size;
+
+	rel = (void *)(base+dyn[DT_REL]);
+	rel_size = dyn[DT_RELSZ];
+	for (; rel_size; rel+=2, rel_size-=2*sizeof(size_t)) {
+		if (!IS_RELATIVE(rel[1])) continue;
+		size_t *rel_addr = (void *)(base + rel[0]);
+		*rel_addr += (size_t)base;
+	}
+
+	rel = (void *)(base+dyn[DT_RELA]);
+	rel_size = dyn[DT_RELASZ];
+	for (; rel_size; rel+=3, rel_size-=3*sizeof(size_t)) {
+		if (!IS_RELATIVE(rel[1])) continue;
+		size_t *rel_addr = (void *)(base + rel[0]);
+		*rel_addr = (size_t)base + rel[2];
 	}
 
 	const char *strings = (void *)(base + dyn[DT_STRTAB]);
diff --git a/src/ldso/dynlink.c b/src/ldso/dynlink.c
index 7c92ef6..93595a0 100644
--- a/src/ldso/dynlink.c
+++ b/src/ldso/dynlink.c
@@ -281,7 +281,7 @@ static void do_relocs(struct dso *dso, size_t *rel, size_t rel_size, size_t stri
 		}
 
 		int gotplt = (type == REL_GOT || type == REL_PLT);
-		if (dso->rel_update_got && !gotplt) continue;
+		if (dso->rel_update_got && !gotplt && stride==2) continue;
 
 		addend = stride>2 ? rel[2]
 			: gotplt || type==REL_COPY ? 0
diff --git a/src/locale/dcngettext.c b/src/locale/dcngettext.c
index 0057cb5..30dd41d 100644
--- a/src/locale/dcngettext.c
+++ b/src/locale/dcngettext.c
@@ -132,7 +132,7 @@ char *dcngettext(const char *domainname, const char *msgid1, const char *msgid2,
 	switch (category) {
 	case LC_MESSAGES:
 		locname = loc->messages_name;
-		if (!*locname) goto notrans;
+		if (!locname || !*locname) goto notrans;
 		break;
 	case LC_TIME:
 	case LC_MONETARY:
diff --git a/src/locale/iconv.c b/src/locale/iconv.c
index a0b0232..e6121ae 100644
--- a/src/locale/iconv.c
+++ b/src/locale/iconv.c
@@ -23,19 +23,13 @@
 #define BIG5        0340
 #define EUC_KR      0350
 
-/* FIXME: these are not implemented yet
- * EUC:   A1-FE A1-FE
- * GBK:   81-FE 40-7E,80-FE
- * Big5:  A1-FE 40-7E,A1-FE
- */
-
 /* Definitions of charmaps. Each charmap consists of:
  * 1. Empty-string-terminated list of null-terminated aliases.
  * 2. Special type code or number of elided entries.
  * 3. Character table (size determined by field 2). */
 
 static const unsigned char charmaps[] =
-"utf8\0\0\310"
+"utf8\0char\0\0\310"
 "wchart\0\0\306"
 "ucs2\0ucs2be\0\0\304"
 "ucs2le\0\0\305"
@@ -90,6 +84,7 @@ static int fuzzycmp(const unsigned char *a, const unsigned char *b)
 static size_t find_charmap(const void *name)
 {
 	const unsigned char *s;
+	if (!*(char *)name) name=charmaps; /* "utf8" */
 	for (s=charmaps; *s; ) {
 		if (!fuzzycmp(name, s)) {
 			for (; *s; s+=strlen((void *)s)+1);
diff --git a/src/locale/setlocale.c b/src/locale/setlocale.c
index 8ea389a..d797f43 100644
--- a/src/locale/setlocale.c
+++ b/src/locale/setlocale.c
@@ -55,12 +55,7 @@ char *setlocale(int cat, const char *name)
 		return buf;
 	}
 
-	if (name) {
-		int adj = libc.global_locale.ctype_utf8;
-		__setlocalecat(&libc.global_locale, cat, name);
-		adj -= libc.global_locale.ctype_utf8;
-		if (adj) a_fetch_add(&libc.bytelocale_cnt_minus_1, adj);
-	}
+	if (name) __setlocalecat(&libc.global_locale, cat, name);
 
 	switch (cat) {
 	case LC_CTYPE:
diff --git a/src/locale/uselocale.c b/src/locale/uselocale.c
index 5106795..b70a0c1 100644
--- a/src/locale/uselocale.c
+++ b/src/locale/uselocale.c
@@ -10,15 +10,7 @@ locale_t __uselocale(locale_t new)
 
 	if (new == LC_GLOBAL_LOCALE) new = global;
 
-	if (new && new != old) {
-		int adj = 0;
-		if (new == global) a_dec(&libc.uselocale_cnt);
-		else if (!new->ctype_utf8) adj++;
-		if (old == global) a_inc(&libc.uselocale_cnt);
-		else if (!old->ctype_utf8) adj--;
-		a_fetch_add(&libc.bytelocale_cnt_minus_1, adj);
-		self->locale = new;
-	}
+	self->locale = new;
 
 	return old == global ? LC_GLOBAL_LOCALE : old;
 }
diff --git a/src/thread/i386/__set_thread_area.s b/src/thread/i386/__set_thread_area.s
index 1d85268..3a558fb 100644
--- a/src/thread/i386/__set_thread_area.s
+++ b/src/thread/i386/__set_thread_area.s
@@ -6,10 +6,10 @@ __set_thread_area:
 	push $0x51
 	push $0xfffff
 	push 16(%esp)
-	xor %edx,%edx
-	mov %gs,%dx
-	sub $3,%edx
-	sar $3,%edx
+	call 1f
+1:	addl $4f-1b,(%esp)
+	pop %ecx
+	mov (%ecx),%edx
 	push %edx
 	mov %esp,%ebx
 	xor %eax,%eax
@@ -18,6 +18,7 @@ __set_thread_area:
 	testl %eax,%eax
 	jnz 2f
 	movl (%esp),%edx
+	movl %edx,(%ecx)
 	leal 3(,%edx,8),%edx
 3:	movw %dx,%gs
 1:
@@ -38,3 +39,7 @@ __set_thread_area:
 	mov $7,%dl
 	inc %al
 	jmp 3b
+
+.data
+	.align 4
+4:	.long -1
diff --git a/src/thread/mips/syscall_cp.s b/src/thread/mips/syscall_cp.s
index 399289e..8f76d40 100644
--- a/src/thread/mips/syscall_cp.s
+++ b/src/thread/mips/syscall_cp.s
@@ -2,10 +2,13 @@
 
 .global __cp_begin
 .hidden __cp_begin
+.type   __cp_begin,@function
 .global __cp_end
 .hidden __cp_end
+.type   __cp_end,@function
 .global __cp_cancel
 .hidden __cp_cancel
+.type   __cp_cancel,@function
 .hidden __cancel
 .global __syscall_cp_asm
 .hidden __syscall_cp_asm
diff --git a/src/thread/pthread_create.c b/src/thread/pthread_create.c
index 4eb8b88..de72818 100644
--- a/src/thread/pthread_create.c
+++ b/src/thread/pthread_create.c
@@ -67,12 +67,6 @@ _Noreturn void __pthread_exit(void *result)
 		exit(0);
 	}
 
-	if (self->locale != &libc.global_locale) {
-		a_dec(&libc.uselocale_cnt);
-		if (self->locale->ctype_utf8)
-			a_dec(&libc.bytelocale_cnt_minus_1);
-	}
-
 	/* Process robust list in userspace to handle non-pshared mutexes
 	 * and the detached thread case where the robust list head will
 	 * be invalid when the kernel would process it. */
-- 
2.4.1