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Thu Oct 26 00:11:13 1995 Roland McGrath <roland@churchy.gnu.ai.mit.edu>

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* sysdeps/unix/sysv/linux/i386/sigaction.c: New file.

	* sysdeps/unix/sysv/linux/i386/xstat.S: Don't use JUMPTARGET macro
	on syscall_error.  For PIC, it is a local label;
	for non-PIC, JUMPTARGET expands to the unadorned name anyway.
	* sysdeps/unix/sysv/linux/i386/xmknod.S: Likewise.
	* sysdeps/unix/sysv/linux/i386/syscall.S: Likewise.
	* sysdeps/unix/sysv/linux/i386/socket.S: Likewise.
	* sysdeps/unix/sysv/linux/i386/sbrk.S: Likewise.
	* sysdeps/unix/sysv/linux/i386/mmap.S: Likewise.
	* sysdeps/unix/sysv/linux/i386/brk.S: Likewise.
This commit is contained in:
Roland McGrath 1995-10-26 04:17:49 +00:00
parent 4133498776
commit efc755b282
10 changed files with 110 additions and 10 deletions
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14
ChangeLog
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@ -1,3 +1,17 @@
Thu Oct 26 00:11:13 1995 Roland McGrath <roland@churchy.gnu.ai.mit.edu>
* sysdeps/unix/sysv/linux/i386/sigaction.c: New file.
* sysdeps/unix/sysv/linux/i386/xstat.S: Don't use JUMPTARGET macro
on syscall_error. For PIC, it is a local label;
for non-PIC, JUMPTARGET expands to the unadorned name anyway.
* sysdeps/unix/sysv/linux/i386/xmknod.S: Likewise.
* sysdeps/unix/sysv/linux/i386/syscall.S: Likewise.
* sysdeps/unix/sysv/linux/i386/socket.S: Likewise.
* sysdeps/unix/sysv/linux/i386/sbrk.S: Likewise.
* sysdeps/unix/sysv/linux/i386/mmap.S: Likewise.
* sysdeps/unix/sysv/linux/i386/brk.S: Likewise.
Thu Oct 26 03:01:22 1995 Ulrich Drepper <drepper@ipd.info.uni-karlsruhe.de>
* sysdeps/unix/sysv/linux/syscall.h: Strip list of syscalls in

6
sysdeps/unix/configure vendored
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@ -63,8 +63,8 @@ for unix_function in \
dup2 lstat mkdir rmdir readlink symlink rename swapon \
access select getgroups setgroups \
getitimer setitimer \
getdomainname/getdomain=bsd/bsd4.4 \
setdomainname/setdomain=bsd/bsd4.4 \
getdomainname:getdomain=bsd/bsd4.4 \
setdomainname:setdomain=bsd/bsd4.4 \
fchdir=bsd/bsd4.4 \
profil=bsd readv=bsd writev=bsd \
getpriority setpriority \
@ -78,7 +78,7 @@ do
unix_srcdir=common
eval "unix_syscall=`echo $unix_function | \
sed -e 's@=\(.*\)$@ unix_srcdir=\1@' \
-e 's@/\(^=/*\)$@ unix_srcname=\1@'`"
-e 's@:\(.*\)@ unix_srcname=\1@'`"
test -z "$unix_srcname" && unix_srcname=$unix_syscall
unix_implementor=none

2
sysdeps/unix/sysv/linux/i386/brk.S
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@ -42,7 +42,7 @@ ENTRY (__brk)
movl %edx, %ebx
cmpl 4(%esp), %eax
jne JUMPTARGET(syscall_error)
jne syscall_error
#ifdef PIC
/* Standard PIC nonsense to store into `__curbrk' through the GOT. */

2
sysdeps/unix/sysv/linux/i386/mmap.S
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@ -38,7 +38,7 @@ ENTRY (__mmap)
/* %eax is < 0 if there was an error. */
testl %eax, %eax
jl JUMPTARGET(syscall_error)
jl syscall_error
/* Successful; return the syscall's value. */
ret

2
sysdeps/unix/sysv/linux/i386/sbrk.S
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@ -77,6 +77,6 @@ ENTRY (__sbrk)
.align 16
.L3:
movl %edx, %ebx
jmp JUMPTARGET(syscall_error)
jmp syscall_error
weak_alias (__sbrk, sbrk)

86
sysdeps/unix/sysv/linux/i386/sigaction.c Normal file
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@ -0,0 +1,86 @@
/* POSIX.1 `sigaction' call for Linux/i386.
Copyright (C) 1991, 1995 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 Library General Public License as
published by the Free Software Foundation; either version 2 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
Library General Public License for more details.
You should have received a copy of the GNU Library General Public
License along with the GNU C Library; see the file COPYING.LIB. If
not, write to the Free Software Foundation, Inc., 675 Mass Ave,
Cambridge, MA 02139, USA. */
#include <sysdep.h>
#include <errno.h>
#include <stddef.h>
#include <signal.h>
/* If ACT is not NULL, change the action for SIG to *ACT.
If OACT is not NULL, put the old action for SIG in *OACT. */
int
__sigaction (int sig, const struct sigaction *act, struct sigaction *oact)
{
struct sigaction newact;
int result;
if (new)
{
newact = *new;
new = &newact;
new->sa_restorer = ((new->sa_flags & SA_NOMASK)
? &&restore_nomask : &&restore);
}
asm volatile ("pushl %%ebx\n"
"movl %1, %%ebx\n"
"int $0x80\n"
"popl %%ebx"
: "=a" (result)
: "0" (SYS_ify (sigaction)), "g" (sig), "c" (new), "d" (old));
if (result < 0)
{
errno = -result;
return -1;
}
return 0;
restore:
asm (
#ifdef PIC
" pushl %ebx\n"
" call 0f\n"
"0: popl %ebx\n"
" addl $_GLOBAL_OFFSET_TABLE_+[.-0b],%ebx\n"
" addl $8, %%esp\n"
" call __sigsetmask@PLT\n"
" addl $8, %%esp\n"
" popl %ebx\n"
#else
" addl $4, %%esp\n"
" call __sigsetmask\n"
" addl $4, %%esp\n"
#endif
"popl %eax\n"
"popl %ecx\n"
"popl %edx\n"
"popf\n"
"ret");
restore_nomask:
asm ("addl $4, %esp\n"
"popl %eax\n"
"popl %ecx\n"
"popl %edx\n"
"popf\n"
"ret");
}
weak_alias (__sigaction, sigaction)

2
sysdeps/unix/sysv/linux/i386/socket.S
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@ -53,7 +53,7 @@ ENTRY (P(__,socket))
/* %eax is < 0 if there was an error. */
testl %eax, %eax
jl JUMPTARGET(syscall_error)
jl syscall_error
/* Successful; return the syscall's value. */
ret

2
sysdeps/unix/sysv/linux/i386/syscall.S
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@ -27,5 +27,5 @@ ENTRY (syscall)
int $0x80 /* Do the system call. */
POPARGS_5 /* Restore register contents. */
testl %eax, %eax /* Check %eax for error. */
jl JUMPTARGET(syscall_error) /* Jump to error handler if negative. */
jl syscall_error /* Jump to error handler if negative. */
ret /* Return to caller. */

2
sysdeps/unix/sysv/linux/i386/xmknod.S
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@ -41,7 +41,7 @@ ENTRY (__xmknod)
jmp *%ecx /* Return success. */
.L2: pushl %ecx
jmp JUMPTARGET(syscall_error)
jmp syscall_error
/* Yes, then branch to error handling. */
/* For compatibility with Linux libc. */

2
sysdeps/unix/sysv/linux/i386/xstat.S
View File

@ -41,7 +41,7 @@ ENTRY (__xstat)
jmp *%ecx /* Return success. */
.L2: pushl %ecx
jmp JUMPTARGET(syscall_error)
jmp syscall_error
/* Yes, then branch to error handling. */
/* For compatibility with Linux libc. */