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authorUlrich Drepper <drepper@redhat.com>2002-07-20 01:14:41 +0000
committerUlrich Drepper <drepper@redhat.com>2002-07-20 01:14:41 +0000
commit739d440d2a748be4b0139d4e5e0a566098abfcec (patch)
tree395d06a998290892d7d92568471adee8e1e4824f /sysdeps
parent9df63767d4078fdaf90307f5aa153422f7ec0722 (diff)
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Update.
2002-07-19 Ulrich Drepper <drepper@redhat.com> * configure.in: Add test for __thread support in compiler. * config.h.in: Add HAVE___THREAD. * Makefile (headers): Remove errno.h, sys/errno.h, and bits/errno.h. * include/sys/errno.h: Moved to... * stdlib/sys/errno.h: ...here. New file. * stdlib/errno.h: New file. Moved from... * include/errno.h: ...here. Changed into an internal header defining libc-local things like __set_errno. * stdlib/Makefile (headers): Add errno.h, sys/errno.h, and bits/errno.h. * elf/dl-minimal.c: Include <tls.h>. Define errno as thread-local variable if USE_TLS && HAVE___THREAD. Don't define __errno_location either. * elf/rtld.c (_dl_start): Add code to initialize TLS for ld.so from... (_dl_start_final): ...here. Add code to initialize tls elements from bootstrap_map. * sysdeps/generic/errno-loc.c: Define errno as thread-local variable if USE_TLS && HAVE___THREAD. * sysdeps/generic/bits/errno.h: Remove __set_errno definition. * sysdeps/mach/hurd/bits/errno.h: Likewise. * sysdeps/standalone/arm/bits/errno.h: Likewise. * sysdeps/standalone/bits/errno.h: Likewise. * sysdeps/unix/bsd/bsd4.4/bits/errno.h: Likewise. * sysdeps/unix/sysv/aix/bits/errno.h: Likewise. * sysdeps/unix/sysv/hpux/bits/errno.h: Likewise. * sysdeps/unix/sysv/linux/bits/errno.h: Likewise. * sysdeps/unix/sysv/linux/hppa/bits/errno.h: Likewise. * sysdeps/unix/sysv/linux/mips/bits/errno.h: Likewise. * sysdeps/unix/sysv/sysv4/solaris2/bits/errno.h: Likewise. * sysdeps/i386/dl-machine.c (elf_machine_rel) [RTLD_BOOTSTRAP]: Don't use GL(dl_rtld_map), use map parameter. * sysdeps/sh/dl-machine.h (elf_machine_rela): Likewise. * sysdeps/unix/sysv/linux/i386/sysdep.S: Define errno in .tbss if USE_TLS && HAVE___THREAD. * sysdeps/unix/sysv/linux/i386/sysdep.h: Unify SETUP_PIC_REG definitions. If USE_TLS && HAVE___THREAD store errooor value using TLS code sequence. * sysdeps/unix/sysv/linux/i386/i686/sysdep.h: Likewise. * sysdeps/unix/sysv/linux/getcwd.c: No real need to restore errno. * sysdeps/unix/sysv/linux/grantpt.c: Likewise. * sysdeps/unix/sysv/linux/internal_statvfs.c: Likewise. * sysdeps/unix/sysv/linux/msgctl.c: Likewise. * sysdeps/unix/sysv/linux/readv.c: Likewise. * sysdeps/unix/sysv/linux/writev.c: Likewise.
Diffstat (limited to 'sysdeps')
-rw-r--r--sysdeps/generic/bits/errno.h2
-rw-r--r--sysdeps/generic/errno-loc.c9
-rw-r--r--sysdeps/i386/dl-machine.h2
-rw-r--r--sysdeps/mach/hurd/bits/errno.h1
-rw-r--r--sysdeps/sh/dl-machine.h2
-rw-r--r--sysdeps/standalone/arm/bits/errno.h1
-rw-r--r--sysdeps/standalone/bits/errno.h2
-rw-r--r--sysdeps/unix/bsd/bsd4.4/bits/errno.h2
-rw-r--r--sysdeps/unix/sysv/aix/bits/errno.h4
-rw-r--r--sysdeps/unix/sysv/hpux/bits/errno.h2
-rw-r--r--sysdeps/unix/sysv/linux/bits/errno.h8
-rw-r--r--sysdeps/unix/sysv/linux/getcwd.c11
-rw-r--r--sysdeps/unix/sysv/linux/grantpt.c9
-rw-r--r--sysdeps/unix/sysv/linux/hppa/bits/errno.h8
-rw-r--r--sysdeps/unix/sysv/linux/i386/i686/sysdep.h72
-rw-r--r--sysdeps/unix/sysv/linux/i386/sysdep.S13
-rw-r--r--sysdeps/unix/sysv/linux/i386/sysdep.h72
-rw-r--r--sysdeps/unix/sysv/linux/internal_statvfs.c5
-rw-r--r--sysdeps/unix/sysv/linux/mips/bits/errno.h8
-rw-r--r--sysdeps/unix/sysv/linux/msgctl.c5
-rw-r--r--sysdeps/unix/sysv/linux/readv.c6
-rw-r--r--sysdeps/unix/sysv/linux/writev.c6
-rw-r--r--sysdeps/unix/sysv/sysv4/solaris2/bits/errno.h2
23 files changed, 97 insertions, 155 deletions
diff --git a/sysdeps/generic/bits/errno.h b/sysdeps/generic/bits/errno.h
index dbeef5de4f..89a5cfddeb 100644
--- a/sysdeps/generic/bits/errno.h
+++ b/sysdeps/generic/bits/errno.h
@@ -33,5 +33,3 @@
# define Exxxx XXX
...
#endif
-
-#define __set_errno(val) errno = (val)
diff --git a/sysdeps/generic/errno-loc.c b/sysdeps/generic/errno-loc.c
index 44fedf41f0..bda9fa4211 100644
--- a/sysdeps/generic/errno-loc.c
+++ b/sysdeps/generic/errno-loc.c
@@ -1,6 +1,6 @@
/* MT support function to get address of `errno' variable, non-threaded
version.
- Copyright (C) 1996, 1998 Free Software Foundation, Inc.
+ Copyright (C) 1996, 1998, 2002 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
@@ -19,8 +19,15 @@
02111-1307 USA. */
#include <errno.h>
+#include <tls.h>
#undef errno
+#if USE_TLS && HAVE___THREAD
+extern __thread int errno;
+#else
+extern int errno;
+#endif
+
int *
weak_const_function
__errno_location (void)
diff --git a/sysdeps/i386/dl-machine.h b/sysdeps/i386/dl-machine.h
index 7dbb4ba903..f8b2a3cbd1 100644
--- a/sysdeps/i386/dl-machine.h
+++ b/sysdeps/i386/dl-machine.h
@@ -399,7 +399,7 @@ elf_machine_rel (struct link_map *map, const Elf32_Rel *reloc,
case R_386_TLS_TPOFF32:
/* The offset is positive, backward from the thread pointer. */
# ifdef RTLD_BOOTSTRAP
- *reloc_addr = GL(dl_rtld_map).l_tls_offset - sym->st_value;
+ *reloc_addr = map->l_tls_offset - sym->st_value;
# else
/* We know the offset of object the symbol is contained in.
It is a positive value which will be subtracted from the
diff --git a/sysdeps/mach/hurd/bits/errno.h b/sysdeps/mach/hurd/bits/errno.h
index 78597af703..e5d208c8f5 100644
--- a/sysdeps/mach/hurd/bits/errno.h
+++ b/sysdeps/mach/hurd/bits/errno.h
@@ -310,7 +310,6 @@ typedef enum __error_t_codes error_t;
extern int *__errno_location (void) __THROW __attribute__ ((__const__));
#define errno (*__errno_location ())
-#define __set_errno(val) (errno = (val))
#endif /* <errno.h> included. */
diff --git a/sysdeps/sh/dl-machine.h b/sysdeps/sh/dl-machine.h
index 6ba7c42133..483b42f9f3 100644
--- a/sysdeps/sh/dl-machine.h
+++ b/sysdeps/sh/dl-machine.h
@@ -573,7 +573,7 @@ elf_machine_rela (struct link_map *map, const Elf32_Rela *reloc,
case R_SH_TLS_TPOFF32:
/* The offset is positive, afterward from the thread pointer. */
# ifdef RTLD_BOOTSTRAP
- *reloc_addr = GL(dl_rtld_map).l_tls_offset + sym->st_value;
+ *reloc_addr = map->l_tls_offset + sym->st_value;
# else
/* We know the offset of object the symbol is contained in.
It is a positive value which will be added to the thread
diff --git a/sysdeps/standalone/arm/bits/errno.h b/sysdeps/standalone/arm/bits/errno.h
index 2700c17338..d7db91db89 100644
--- a/sysdeps/standalone/arm/bits/errno.h
+++ b/sysdeps/standalone/arm/bits/errno.h
@@ -60,7 +60,6 @@
# define EOVERFLOW 32
#endif
-#define __set_errno(val) errno = (val)
/* Function to get address of global `errno' variable. */
extern int *__errno_location __P ((void)) __attribute__ ((__const__));
diff --git a/sysdeps/standalone/bits/errno.h b/sysdeps/standalone/bits/errno.h
index c7d3755a15..217c6d5d82 100644
--- a/sysdeps/standalone/bits/errno.h
+++ b/sysdeps/standalone/bits/errno.h
@@ -57,5 +57,3 @@
# define ENOSPC 31
# define EBUSY 32
#endif
-
-#define __set_errno(val) errno = (val)
diff --git a/sysdeps/unix/bsd/bsd4.4/bits/errno.h b/sysdeps/unix/bsd/bsd4.4/bits/errno.h
index 816059e79b..48b1c8b6e6 100644
--- a/sysdeps/unix/bsd/bsd4.4/bits/errno.h
+++ b/sysdeps/unix/bsd/bsd4.4/bits/errno.h
@@ -161,6 +161,4 @@
#endif /* __USE_BSD */
-#define __set_errno(val) errno = (val)
-
#endif /* <errno.h> included. */
diff --git a/sysdeps/unix/sysv/aix/bits/errno.h b/sysdeps/unix/sysv/aix/bits/errno.h
index f2cdba8d64..9f22a965e1 100644
--- a/sysdeps/unix/sysv/aix/bits/errno.h
+++ b/sysdeps/unix/sysv/aix/bits/errno.h
@@ -144,10 +144,6 @@
# define EMULTIHOP 125 /* Multihop is not allowed. */
# define ENOLINK 126 /* The link has been severed. */
# define EOVERFLOW 127 /* Value too large to be stored in data type.*/
-
-# ifdef _LIBC
-# define __set_errno(val) errno = (val)
-# endif
#endif
#if !defined _ERRNO_H && defined __need_Emath
diff --git a/sysdeps/unix/sysv/hpux/bits/errno.h b/sysdeps/unix/sysv/hpux/bits/errno.h
index acae4848f8..c9903c6dfe 100644
--- a/sysdeps/unix/sysv/hpux/bits/errno.h
+++ b/sysdeps/unix/sysv/hpux/bits/errno.h
@@ -32,5 +32,3 @@
#define ENOMSG 35
#define ENOSYS 251
#endif
-
-#define __set_errno(val) errno = (val)
diff --git a/sysdeps/unix/sysv/linux/bits/errno.h b/sysdeps/unix/sysv/linux/bits/errno.h
index ac59d4c9dd..7307c2d6d9 100644
--- a/sysdeps/unix/sysv/linux/bits/errno.h
+++ b/sysdeps/unix/sysv/linux/bits/errno.h
@@ -32,17 +32,9 @@
# define ECANCELED 125
# ifndef __ASSEMBLER__
-/* We now need a declaration of the `errno' variable. */
-extern int errno;
-
/* Function to get address of global `errno' variable. */
extern int *__errno_location (void) __THROW __attribute__ ((__const__));
-# if defined _LIBC
-/* We wouldn't need a special macro anymore but it is history. */
-# define __set_errno(val) (*__errno_location ()) = (val)
-# endif /* _LIBC */
-
# if !defined _LIBC || defined _LIBC_REENTRANT
/* When using threads, errno is a per-thread value. */
# define errno (*__errno_location ())
diff --git a/sysdeps/unix/sysv/linux/getcwd.c b/sysdeps/unix/sysv/linux/getcwd.c
index fd8c634c63..7c27426f3c 100644
--- a/sysdeps/unix/sysv/linux/getcwd.c
+++ b/sysdeps/unix/sysv/linux/getcwd.c
@@ -1,5 +1,5 @@
/* Determine current working directory. Linux version.
- Copyright (C) 1997, 1998, 1999, 2000 Free Software Foundation, Inc.
+ Copyright (C) 1997, 1998, 1999, 2000, 2002 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Ulrich Drepper <drepper@cygnus.com>, 1997.
@@ -64,7 +64,6 @@ static int have_new_dcache = 1;
char *
__getcwd (char *buf, size_t size)
{
- int save_errno;
char *path;
int n;
char *result;
@@ -93,8 +92,6 @@ __getcwd (char *buf, size_t size)
return NULL;
}
- save_errno = errno;
-
#if defined __NR_getcwd || __LINUX_GETCWD_SYSCALL > 0
if (!no_syscall_getcwd)
{
@@ -137,8 +134,6 @@ __getcwd (char *buf, size_t size)
free (path);
return NULL;
}
-
- __set_errno (save_errno);
# endif
}
#endif
@@ -179,10 +174,6 @@ __getcwd (char *buf, size_t size)
have_new_dcache = 0;
#endif
- /* Something went wrong. Restore the error number and use the generic
- version. */
- __set_errno (save_errno);
-
/* Don't put restrictions on the length of the path unless the user does. */
if (size == 0)
{
diff --git a/sysdeps/unix/sysv/linux/grantpt.c b/sysdeps/unix/sysv/linux/grantpt.c
index 168081758f..b894b8b631 100644
--- a/sysdeps/unix/sysv/linux/grantpt.c
+++ b/sysdeps/unix/sysv/linux/grantpt.c
@@ -1,4 +1,4 @@
-/* Copyright (C) 1998, 1999, 2001 Free Software Foundation, Inc.
+/* Copyright (C) 1998, 1999, 2001, 2002 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
@@ -56,12 +56,13 @@ grantpt (int fd)
if (__libc_fcntl (fd, F_GETFD) == -1 && errno == EBADF)
return -1;
- __set_errno (save_errno);
-
/* If the filedescriptor is no TTY, grantpt has to set errno
to EINVAL. */
- if (errno == ENOTTY)
+ if (save_errno == ENOTTY)
__set_errno (EINVAL);
+ else
+ __set_errno (save_errno);
+
return -1;
}
diff --git a/sysdeps/unix/sysv/linux/hppa/bits/errno.h b/sysdeps/unix/sysv/linux/hppa/bits/errno.h
index 8b1fa44e98..4d75ff1f61 100644
--- a/sysdeps/unix/sysv/linux/hppa/bits/errno.h
+++ b/sysdeps/unix/sysv/linux/hppa/bits/errno.h
@@ -29,17 +29,9 @@
# define ECANCELED 125
# ifndef __ASSEMBLER__
-/* We now need a declaration of the `errno' variable. */
-extern int errno;
-
/* Function to get address of global `errno' variable. */
extern int *__errno_location (void) __THROW __attribute__ ((__const__));
-# if defined _LIBC
-/* We wouldn't need a special macro anymore but it is history. */
-# define __set_errno(val) (*__errno_location ()) = (val)
-# endif /* _LIBC */
-
# if !defined _LIBC || defined _LIBC_REENTRANT
/* When using threads, errno is a per-thread value. */
# define errno (*__errno_location ())
diff --git a/sysdeps/unix/sysv/linux/i386/i686/sysdep.h b/sysdeps/unix/sysv/linux/i386/i686/sysdep.h
index 6b54a81d32..1cd335ad7b 100644
--- a/sysdeps/unix/sysv/linux/i386/i686/sysdep.h
+++ b/sysdeps/unix/sysv/linux/i386/i686/sysdep.h
@@ -30,32 +30,44 @@
#ifdef PIC
# undef SYSCALL_ERROR_HANDLER
-/* Store (- %eax) into errno through the GOT. */
-# ifdef _LIBC_REENTRANT
-
-# ifndef HAVE_HIDDEN
-# define SETUP_PIC_REG \
+# undef SETUP_PIC_REG
+# ifndef HAVE_HIDDEN
+# define SETUP_PIC_REG(reg) \
call 1f; \
.subsection 1; \
-1:movl (%esp), %ebx; \
+1:movl (%esp), %e##reg; \
ret; \
.previous
-# else
-# define SETUP_PIC_REG \
- .section .gnu.linkonce.t.__i686.get_pc_thunk.bx,"ax",@progbits; \
- .globl __i686.get_pc_thunk.bx; \
- .hidden __i686.get_pc_thunk.bx; \
- .type __i686.get_pc_thunk.bx,@function; \
-__i686.get_pc_thunk.bx: \
- movl (%esp), %ebx; \
+# else
+# define SETUP_PIC_REG(reg) \
+ .section .gnu.linkonce.t.__i686.get_pc_thunk.reg,"ax",@progbits; \
+ .globl __i686.get_pc_thunk.reg; \
+ .hidden __i686.get_pc_thunk.reg; \
+ .type __i686.get_pc_thunk.reg,@function; \
+__i686.get_pc_thunk.reg: \
+ movl (%esp), %e##reg; \
ret; \
.previous; \
- call __i686.get_pc_thunk.bx
-# endif
+ call __i686.get_pc_thunk.reg
+# endif
-# define SYSCALL_ERROR_HANDLER \
+/* Store (- %eax) into errno through the GOT. */
+# ifdef _LIBC_REENTRANT
+# if USE_TLS && HAVE___THREAD
+# define SYSCALL_ERROR_HANDLER \
+0:SETUP_PIC_REG (cx); \
+ addl $_GLOBAL_OFFSET_TABLE_, %ecx; \
+ xorl %edx, %edx; \
+ subl %eax, %edx; \
+ movl %gs:0, %eax; \
+ subl errno@gottpoff(%ecx), %eax; \
+ movl %edx, (%eax); \
+ orl $-1, %eax; \
+ jmp L(pseudo_end);
+# else
+# define SYSCALL_ERROR_HANDLER \
0:pushl %ebx; \
- SETUP_PIC_REG; \
+ SETUP_PIC_REG(bx); \
addl $_GLOBAL_OFFSET_TABLE_, %ebx; \
xorl %edx, %edx; \
subl %eax, %edx; \
@@ -70,30 +82,10 @@ __i686.get_pc_thunk.bx: \
jmp L(pseudo_end);
/* A quick note: it is assumed that the call to `__errno_location' does
not modify the stack! */
-# else
-
-# ifndef HAVE_HIDDEN
-# define SETUP_PIC_REG \
- call 1f; \
- .subsection 1; \
-1:movl (%esp), %ecx; \
- ret; \
- .previous
-# else
-# define SETUP_PIC_REG \
- .section .gnu.linkonce.t.__i686.get_pc_thunk.cx,"ax",@progbits; \
- .globl __i686.get_pc_thunk.cx; \
- .hidden __i686.get_pc_thunk.cx; \
- .type __i686.get_pc_thunk.cx,@function; \
-__i686.get_pc_thunk.cx: \
- movl (%esp), %ecx; \
- ret; \
- .previous; \
- call __i686.get_pc_thunk.cx
# endif
-
+# else
# define SYSCALL_ERROR_HANDLER \
-0:SETUP_PIC_REG; \
+0:SETUP_PIC_REG(cx); \
addl $_GLOBAL_OFFSET_TABLE_, %ecx; \
xorl %edx, %edx; \
subl %eax, %edx; \
diff --git a/sysdeps/unix/sysv/linux/i386/sysdep.S b/sysdeps/unix/sysv/linux/i386/sysdep.S
index cd9f23a8cd..09428987ec 100644
--- a/sysdeps/unix/sysv/linux/i386/sysdep.S
+++ b/sysdeps/unix/sysv/linux/i386/sysdep.S
@@ -1,4 +1,4 @@
-/* Copyright (C) 1995, 1996, 1997, 1998 Free Software Foundation, Inc.
+/* Copyright (C) 1995, 1996, 1997, 1998, 2002 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 @@
02111-1307 USA. */
#include <sysdep.h>
+#include <tls.h>
/* Because the Linux version is in fact i386/ELF and the start.? file
for this system (sysdeps/i386/elf/start.S) is also used by The Hurd
@@ -25,13 +26,21 @@
it somewhere else.
...and this place is here. */
+#if USE_TLS && HAVE___THREAD
+ .section .tbss
+#else
.bss
+#endif
.globl errno
.type errno,@object
.size errno,4
+ .globl _errno
+ .type _errno,@object
+ .size _errno,4
+ .align 4
errno:
+_errno:
.space 4
-weak_alias (errno, _errno)
/* The following code is only used in the shared library when we
compile the reentrant version. Otherwise each system call defines
diff --git a/sysdeps/unix/sysv/linux/i386/sysdep.h b/sysdeps/unix/sysv/linux/i386/sysdep.h
index 730c4dfdf9..a6f18ec6f1 100644
--- a/sysdeps/unix/sysv/linux/i386/sysdep.h
+++ b/sysdeps/unix/sysv/linux/i386/sysdep.h
@@ -24,6 +24,7 @@
#include <sysdeps/unix/i386/sysdep.h>
#include <bp-sym.h>
#include <bp-asm.h>
+#include <tls.h>
/* For Linux we can use the system call table in the header file
/usr/include/asm/unistd.h
@@ -72,34 +73,47 @@
END (name)
#ifndef PIC
-#define SYSCALL_ERROR_HANDLER /* Nothing here; code in sysdep.S is used. */
+# define SYSCALL_ERROR_HANDLER /* Nothing here; code in sysdep.S is used. */
#else
-/* Store (- %eax) into errno through the GOT. */
-#ifdef _LIBC_REENTRANT
# ifndef HAVE_HIDDEN
-# define SETUP_PIC_REG \
+# define SETUP_PIC_REG(reg) \
call 1f; \
.subsection 1; \
-1:movl (%esp), %ebx; \
+1:movl (%esp), %e##reg; \
ret; \
.previous
# else
-# define SETUP_PIC_REG \
- .section .gnu.linkonce.t.__i686.get_pc_thunk.bx,"ax",@progbits; \
- .globl __i686.get_pc_thunk.bx; \
- .hidden __i686.get_pc_thunk.bx; \
- .type __i686.get_pc_thunk.bx,@function; \
-__i686.get_pc_thunk.bx: \
- movl (%esp), %ebx; \
+# define SETUP_PIC_REG(reg) \
+ .section .gnu.linkonce.t.__i686.get_pc_thunk.reg,"ax",@progbits; \
+ .globl __i686.get_pc_thunk.reg; \
+ .hidden __i686.get_pc_thunk.reg; \
+ .type __i686.get_pc_thunk.reg,@function; \
+__i686.get_pc_thunk.reg: \
+ movl (%esp), %e##reg; \
ret; \
.previous; \
- call __i686.get_pc_thunk.bx
+ call __i686.get_pc_thunk.reg
# endif
-#define SYSCALL_ERROR_HANDLER \
+/* Store (- %eax) into errno through the GOT. */
+# ifdef _LIBC_REENTRANT
+
+# if USE_TLS && HAVE___THREAD
+# define SYSCALL_ERROR_HANDLER \
+0:SETUP_PIC_REG (cx); \
+ addl $_GLOBAL_OFFSET_TABLE_, %ecx; \
+ xorl %edx, %edx; \
+ subl %eax, %edx; \
+ movl %gs:0, %eax; \
+ subl errno@gottpoff(%ecx), %eax; \
+ movl %edx, (%eax); \
+ orl $-1, %eax; \
+ jmp L(pseudo_end);
+# else
+# define SYSCALL_ERROR_HANDLER \
0:pushl %ebx; \
- SETUP_PIC_REG; \
+ SETUP_PIC_REG (bx); \
addl $_GLOBAL_OFFSET_TABLE_, %ebx; \
xorl %edx, %edx; \
subl %eax, %edx; \
@@ -114,30 +128,10 @@ __i686.get_pc_thunk.bx: \
jmp L(pseudo_end);
/* A quick note: it is assumed that the call to `__errno_location' does
not modify the stack! */
-#else
-
-# ifndef HAVE_HIDDEN
-# define SETUP_PIC_REG \
- call 1f; \
- .subsection 1; \
-1:movl (%esp), %ecx; \
- ret; \
- .previous
+# endif
# else
-# define SETUP_PIC_REG \
- .section .gnu.linkonce.t.__i686.get_pc_thunk.cx,"ax",@progbits; \
- .globl __i686.get_pc_thunk.cx; \
- .hidden __i686.get_pc_thunk.cx; \
- .type __i686.get_pc_thunk.cx,@function; \
-__i686.get_pc_thunk.cx: \
- movl (%esp), %ecx; \
- ret; \
- .previous; \
- call __i686.get_pc_thunk.cx
-# endif
-
-#define SYSCALL_ERROR_HANDLER \
-0:define SETUP_PIC_REG; \
+# define SYSCALL_ERROR_HANDLER \
+0:define SETUP_PIC_REG(cx); \
addl $_GLOBAL_OFFSET_TABLE_, %ecx; \
xorl %edx, %edx; \
subl %eax, %edx; \
@@ -145,7 +139,7 @@ __i686.get_pc_thunk.cx: \
movl %edx, (%ecx); \
orl $-1, %eax; \
jmp L(pseudo_end);
-#endif /* _LIBC_REENTRANT */
+# endif /* _LIBC_REENTRANT */
#endif /* PIC */
/* Linux takes system call arguments in registers:
diff --git a/sysdeps/unix/sysv/linux/internal_statvfs.c b/sysdeps/unix/sysv/linux/internal_statvfs.c
index f78642b59f..ed9dbaaa0e 100644
--- a/sysdeps/unix/sysv/linux/internal_statvfs.c
+++ b/sysdeps/unix/sysv/linux/internal_statvfs.c
@@ -1,4 +1,4 @@
-/* Copyright (C) 1998, 1999, 2000, 2001 Free Software Foundation, Inc.
+/* Copyright (C) 1998, 1999, 2000, 2001, 2002 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Ulrich Drepper <drepper@cygnus.com>, 1998.
@@ -53,7 +53,6 @@
buf->f_flag = 0;
if (STAT (&st) >= 0)
{
- int save_errno = errno;
struct mntent mntbuf;
FILE *mtab;
@@ -104,6 +103,4 @@
/* Close the file. */
__endmntent (mtab);
}
-
- __set_errno (save_errno);
}
diff --git a/sysdeps/unix/sysv/linux/mips/bits/errno.h b/sysdeps/unix/sysv/linux/mips/bits/errno.h
index 29ba9807a5..8220c2e513 100644
--- a/sysdeps/unix/sysv/linux/mips/bits/errno.h
+++ b/sysdeps/unix/sysv/linux/mips/bits/errno.h
@@ -28,17 +28,9 @@
# define ENOTSUP EOPNOTSUPP
# ifndef __ASSEMBLER__
-/* We now need a declaration of the `errno' variable. */
-extern int errno;
-
/* Function to get address of global `errno' variable. */
extern int *__errno_location (void) __THROW __attribute__ ((__const__));
-# if defined _LIBC
-/* We wouldn't need a special macro anymore but it is history. */
-# define __set_errno(val) (*__errno_location ()) = (val)
-# endif /* _LIBC */
-
# if !defined _LIBC || defined _LIBC_REENTRANT
/* When using threads, errno is a per-thread value. */
# define errno (*__errno_location ())
diff --git a/sysdeps/unix/sysv/linux/msgctl.c b/sysdeps/unix/sysv/linux/msgctl.c
index 6a1be827e8..24c87d3ad9 100644
--- a/sysdeps/unix/sysv/linux/msgctl.c
+++ b/sysdeps/unix/sysv/linux/msgctl.c
@@ -1,4 +1,4 @@
-/* Copyright (C) 1995, 1997, 1998, 2000 Free Software Foundation, Inc.
+/* Copyright (C) 1995, 1997, 1998, 2000, 2002 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Ulrich Drepper <drepper@gnu.ai.mit.edu>, August 1995.
@@ -80,7 +80,7 @@ __new_msgctl (int msqid, int cmd, struct msqid_ds *buf)
}
{
- int save_errno = errno, result;
+ int result;
struct __old_msqid_ds old;
/* Unfortunately there is no way how to find out for sure whether
@@ -90,7 +90,6 @@ __new_msgctl (int msqid, int cmd, struct msqid_ds *buf)
if (result != -1 || errno != EINVAL)
return result;
- __set_errno(save_errno);
if (cmd == IPC_SET)
{
old.msg_perm.uid = buf->msg_perm.uid;
diff --git a/sysdeps/unix/sysv/linux/readv.c b/sysdeps/unix/sysv/linux/readv.c
index 7a8fc54e03..601afc09e5 100644
--- a/sysdeps/unix/sysv/linux/readv.c
+++ b/sysdeps/unix/sysv/linux/readv.c
@@ -1,5 +1,5 @@
/* readv supports all Linux kernels >= 2.0.
- Copyright (C) 1997, 1998, 2000 Free Software Foundation, Inc.
+ Copyright (C) 1997, 1998, 2000, 2002 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
@@ -45,7 +45,6 @@ __readv (fd, vector, count)
const struct iovec *vector;
int count;
{
- int errno_saved = errno;
ssize_t bytes_read;
bytes_read = INLINE_SYSCALL (readv, 3, fd, CHECK_N (vector, count), count);
@@ -53,9 +52,6 @@ __readv (fd, vector, count)
if (bytes_read >= 0 || errno != EINVAL || count <= UIO_FASTIOV)
return bytes_read;
- /* Restore the old error value as if nothing happened. */
- __set_errno (errno_saved);
-
return __atomic_readv_replacement (fd, vector, count);
}
weak_alias (__readv, readv)
diff --git a/sysdeps/unix/sysv/linux/writev.c b/sysdeps/unix/sysv/linux/writev.c
index f0064543c0..729fd9aca5 100644
--- a/sysdeps/unix/sysv/linux/writev.c
+++ b/sysdeps/unix/sysv/linux/writev.c
@@ -1,5 +1,5 @@
/* writev supports all Linux kernels >= 2.0.
- Copyright (C) 1997, 1998, 2000 Free Software Foundation, Inc.
+ Copyright (C) 1997, 1998, 2000, 2002 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
@@ -45,7 +45,6 @@ __writev (fd, vector, count)
const struct iovec *vector;
int count;
{
- int errno_saved = errno;
ssize_t bytes_written;
bytes_written = INLINE_SYSCALL (writev, 3, fd, CHECK_N (vector, count), count);
@@ -53,9 +52,6 @@ __writev (fd, vector, count)
if (bytes_written >= 0 || errno != EINVAL || count <= UIO_FASTIOV)
return bytes_written;
- /* Restore the old error value as if nothing happened. */
- __set_errno (errno_saved);
-
return __atomic_writev_replacement (fd, vector, count);
}
weak_alias (__writev, writev)
diff --git a/sysdeps/unix/sysv/sysv4/solaris2/bits/errno.h b/sysdeps/unix/sysv/sysv4/solaris2/bits/errno.h
index 8d5d49e42b..6c0de92151 100644
--- a/sysdeps/unix/sysv/sysv4/solaris2/bits/errno.h
+++ b/sysdeps/unix/sysv/sysv4/solaris2/bits/errno.h
@@ -166,5 +166,3 @@
# define ESTALE 151 /* Stale NFS file handle. */
#endif
-
-#define __set_errno(val) errno = (val)