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| author | Greg McGary <greg@mcgary.org> | 2000-06-27 01:52:26 +0000 |
|---|---|---|
| committer | Greg McGary <greg@mcgary.org> | 2000-06-27 01:52:26 +0000 |
| commit | ee63ca212c7a153b51c32182eb226f0bde04cc82 (patch) | |
| tree | 20a41988972db16c585642823191249a2d4f2b48 /sysdeps/unix | |
| parent | 58ff985dd485e6d2ae723f8568be24f37bac0bd2 (diff) | |
| download | glibc-ee63ca212c7a153b51c32182eb226f0bde04cc82.tar glibc-ee63ca212c7a153b51c32182eb226f0bde04cc82.tar.gz glibc-ee63ca212c7a153b51c32182eb226f0bde04cc82.tar.bz2 glibc-ee63ca212c7a153b51c32182eb226f0bde04cc82.zip | |
* sysdeps/i386/bp-asm.h (POP_ERRNO_LOCATION_RETURN): Fold insns.
* sysdeps/unix/i386/sysdep.S (syscall_error): Push & pop space
for BP return value & push implicit struct-return pointer to
__errno_location.
* sysdeps/unix/sysv/linux/i386/sysdep.h: Likewise.
(SYSCALL_ERROR_HANDLER): Likewise.
* sysdeps/unix/sysv/linux/i386/i686/sysdep.h
(SYSCALL_ERROR_HANDLER): Likewise.
* sysdeps/i386/bp-asm.h (POP_ERRNO_LOCATION_RETURN): Fold insns.
* sysdeps/unix/i386/sysdep.S (syscall_error): Push & pop space
for BP return value & push implicit struct-return pointer to
__errno_location.
* sysdeps/unix/sysv/linux/i386/sysdep.h: Likewise.
(SYSCALL_ERROR_HANDLER): Likewise.
* sysdeps/unix/sysv/linux/i386/i686/sysdep.h
(SYSCALL_ERROR_HANDLER): Likewise.
* Makeconfig (CPPFLAGS-.ob): Pass -fbounded-pointers
for all files *.[cS].
Diffstat (limited to 'sysdeps/unix')
| -rw-r--r-- | sysdeps/unix/i386/sysdep.S | 24 | ||||
| -rw-r--r-- | sysdeps/unix/sysv/linux/i386/i686/sysdep.h | 6 | ||||
| -rw-r--r-- | sysdeps/unix/sysv/linux/i386/sysdep.h | 8 |
3 files changed, 26 insertions, 12 deletions
diff --git a/sysdeps/unix/i386/sysdep.S b/sysdeps/unix/i386/sysdep.S index ff1fc0f431..4c1361849f 100644 --- a/sysdeps/unix/i386/sysdep.S +++ b/sysdeps/unix/i386/sysdep.S @@ -1,4 +1,4 @@ -/* Copyright (C) 1991, 92, 93, 94, 95, 96, 97 Free Software Foundation, Inc. +/* Copyright (C) 1991, 92, 93, 94, 95, 96, 97, 2000 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 @@ -19,6 +19,8 @@ #include <sysdep.h> #define _ERRNO_H #include <bits/errno.h> +#include <bp-asm.h> +#include <bp-sym.h> .globl C_SYMBOL_NAME(errno) .globl syscall_error @@ -39,31 +41,35 @@ syscall_error: notb: #endif #ifndef PIC -#ifndef _LIBC_REENTRANT +# ifndef _LIBC_REENTRANT movl %eax, C_SYMBOL_NAME(errno) -#else +# else pushl %eax - call __errno_location + PUSH_ERRNO_LOCATION_RETURN + call BP_SYM (__errno_location) + POP_ERRNO_LOCATION_RETURN popl %ecx movl %ecx, (%eax) -#endif +# endif #else /* The caller has pushed %ebx and then set it up to point to the GOT before calling us through the PLT. */ -#ifndef _LIBC_REENTRANT +# ifndef _LIBC_REENTRANT movl C_SYMBOL_NAME(errno@GOT)(%ebx), %ecx /* Pop %ebx value saved before jumping here. */ popl %ebx movl %eax, (%ecx) -#else +# else pushl %eax - call C_SYMBOL_NAME(__errno_location@PLT) + PUSH_ERRNO_LOCATION_RETURN + call C_SYMBOL_NAME (BP_SYM (__errno_location)@PLT) + POP_ERRNO_LOCATION_RETURN popl %ecx /* Pop %ebx value saved before jumping here. */ popl %ebx movl %ecx, (%eax) -#endif +# endif #endif movl $-1, %eax ret diff --git a/sysdeps/unix/sysv/linux/i386/i686/sysdep.h b/sysdeps/unix/sysv/linux/i386/i686/sysdep.h index 5a45d47046..25efe9c088 100644 --- a/sysdeps/unix/sysv/linux/i386/i686/sysdep.h +++ b/sysdeps/unix/sysv/linux/i386/i686/sysdep.h @@ -22,6 +22,8 @@ /* There is some commonality. */ #include <sysdeps/unix/sysv/linux/i386/sysdep.h> +#include <bp-sym.h> +#include <bp-asm.h> /* We define special versions of the error handler code to match the i686's deep branch prediction mechanism. */ @@ -39,7 +41,9 @@ xorl %edx, %edx; \ subl %eax, %edx; \ pushl %edx; \ - call __errno_location@PLT; \ + PUSH_ERRNO_LOCATION_RETURN; \ + call BP_SYM (__errno_location)@PLT; \ + POP_ERRNO_LOCATION_RETURN; \ popl %ecx; \ popl %ebx; \ movl %ecx, (%eax); \ diff --git a/sysdeps/unix/sysv/linux/i386/sysdep.h b/sysdeps/unix/sysv/linux/i386/sysdep.h index 8b758fa469..10eba34ccd 100644 --- a/sysdeps/unix/sysv/linux/i386/sysdep.h +++ b/sysdeps/unix/sysv/linux/i386/sysdep.h @@ -1,4 +1,4 @@ -/* Copyright (C) 1992, 93, 95, 96, 97, 98, 99 Free Software Foundation, Inc. +/* Copyright (C) 1992, 93, 95, 96, 97, 98, 99, 00 Free Software Foundation, Inc. This file is part of the GNU C Library. Contributed by Ulrich Drepper, <drepper@gnu.org>, August 1995. @@ -22,6 +22,8 @@ /* There is some commonality. */ #include <sysdeps/unix/i386/sysdep.h> +#include <bp-sym.h> +#include <bp-asm.h> /* For Linux we can use the system call table in the header file /usr/include/asm/unistd.h @@ -82,7 +84,9 @@ addl $_GLOBAL_OFFSET_TABLE_+[.-1b], %ebx; \ subl %eax, %edx; \ pushl %edx; \ - call __errno_location@PLT; \ + PUSH_ERRNO_LOCATION_RETURN; \ + call BP_SYM (__errno_location)@PLT; \ + POP_ERRNO_LOCATION_RETURN; \ popl %ecx; \ popl %ebx; \ movl %ecx, (%eax); \ |