lib/glibc
1
0
Fork 0
mirror of https://sourceware.org/git/glibc.git synced 2025-07-30 22:43:12 +03:00
Code Activity

* sysdeps/i386/bp-asm.h (POP_ERRNO_LOCATION_RETURN): Fold insns.

Browse Source 
* 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].
This commit is contained in:
Greg McGary
2000-06-27 01:52:26 +00:00
parent 58ff985dd4
commit ee63ca212c
4 changed files with 37 additions and 14 deletions
Download Patch File Download Diff File Expand all files Collapse all files

24
sysdeps/unix/i386/sysdep.S
View File

@ -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