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1999-01-13  Ulrich Drepper  <drepper@cygnus.com>

	* sysdeps/unix/sysv/linux/syscalls.list: Add __syscall_fork alias.
	* sysdeps/unix/sysv/linux/vfork.c: Use vfork syscall if available,
	otherwise use fork.
	* sysdeps/unix/sysv/linux/powerpc/syscalls.list: Add vfork.
	* sysdeps/unix/sysv/linux/sparc32/syscalls.list: Likewise.
	* sysdeps/unix/sysv/linux/sparc64/syscalls.list: Likewise.

	* sysdeps/unix/sysv/linux/i386/sysdep.h: Correct handling of
	INLINE_SYSCALL for syscall without parameters.
This commit is contained in:
Ulrich Drepper 1999-01-13 13:29:55 +00:00
parent d7b88214f6
commit 44129238a2
8 changed files with 89 additions and 7 deletions
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12
ChangeLog
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@ -1,3 +1,15 @@
1999-01-13 Ulrich Drepper <drepper@cygnus.com>
* sysdeps/unix/sysv/linux/syscalls.list: Add __syscall_fork alias.
* sysdeps/unix/sysv/linux/vfork.c: Use vfork syscall if available,
otherwise use fork.
* sysdeps/unix/sysv/linux/powerpc/syscalls.list: Add vfork.
* sysdeps/unix/sysv/linux/sparc32/syscalls.list: Likewise.
* sysdeps/unix/sysv/linux/sparc64/syscalls.list: Likewise.
* sysdeps/unix/sysv/linux/i386/sysdep.h: Correct handling of
INLINE_SYSCALL for syscall without parameters.
1999-01-13 Andreas Schwab <schwab@issan.cs.uni-dortmund.de>
* sysdeps/unix/make-syscalls.sh: Set shared-only-routines for

2
manual/texis
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@ -67,6 +67,8 @@ db.c.texi \
sysinfo.texi \
conf.texi \
../crypt/crypt.texi \
../crypt/genpass.c.texi \
../crypt/testpass.c.texi \
../linuxthreads/linuxthreads.texi \
lang.texi \
add.c.texi \

26
sysdeps/unix/sysv/linux/i386/sysdep.h
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@ -1,6 +1,6 @@
/* Copyright (C) 1992, 93, 95, 96, 97, 98 Free Software Foundation, Inc.
/* Copyright (C) 1992, 93, 95, 96, 97, 98, 99 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Ulrich Drepper, <drepper@gnu.ai.mit.edu>, August 1995.
Contributed by Ulrich Drepper, <drepper@gnu.org>, August 1995.
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
@ -243,11 +243,10 @@ asm (".L__X'%ebx = 1\n\t"
({ \
unsigned int resultvar; \
asm volatile ( \
"bpushl .L__X'%k2, %k2\n\t" \
"bmovl .L__X'%k2, %k2\n\t" \
LOADARGS_##nr \
"movl %1, %%eax\n\t" \
"int $0x80\n\t" \
"bpopl .L__X'%k2, %k2\n\t" \
RESTOREARGS_##nr \
: "=a" (resultvar) \
: "i" (__NR_##name) ASMFMT_##nr(args) : "memory", "cc"); \
if (resultvar >= 0xfffff001) \
@ -257,6 +256,23 @@ asm (".L__X'%ebx = 1\n\t"
} \
(int) resultvar; })
#define LOADARGS_0
#define LOADARGS_1 \
"bpushl .L__X'%k2, %k2\n\t" \
"bmovl .L__X'%k2, %k2\n\t"
#define LOADARGS_2 LOADARGS_1
#define LOADARGS_3 LOADARGS_1
#define LOADARGS_4 LOADARGS_1
#define LOADARGS_5 LOADARGS_1
#define RESTOREARGS_0
#define RESTOREARGS_1 \
"bpopl .L__X'%k2, %k2\n\t"
#define RESTOREARGS_2 RESTOREARGS_1
#define RESTOREARGS_3 RESTOREARGS_1
#define RESTOREARGS_4 RESTOREARGS_1
#define RESTOREARGS_5 RESTOREARGS_1
#define ASMFMT_0()
#define ASMFMT_1(arg1) \
, "acdSD" (arg1)

1
sysdeps/unix/sysv/linux/powerpc/syscalls.list
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@ -27,6 +27,7 @@ s_sigprocmask sigprocmask sigprocmask 3 __syscall_sigprocmask
s_sigsuspend sigsuspend sigsuspend 3 __syscall_sigsuspend
s_sysctl sysctl _sysctl 1 __syscall__sysctl
s_ustat ustat ustat 2 __syscall_ustat
s_vfork vfork vfork 0 __syscall_vfork
sys_fstat fxstat fstat 2 __syscall_fstat
sys_lstat lxstat lstat 2 __syscall_lstat
sys_mknod xmknod mknod 3 __syscall_mknod

1
sysdeps/unix/sysv/linux/sparc/sparc32/syscalls.list
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@ -37,6 +37,7 @@ s_sigprocmask sigprocmask sigprocmask 3 __syscall_sigprocmask
s_sigsuspend sigsuspend sigsuspend 3 __syscall_sigsuspend
s_sysctl sysctl _sysctl 1 __syscall__sysctl
s_ustat ustat ustat 2 __syscall_ustat
s_vfork vfork vfork 0 __syscall_vfork
sys_fstat fxstat fstat 2 __syscall_fstat
sys_lstat lxstat lstat 2 __syscall_lstat
sys_mknod xmknod mknod 3 __syscall_mknod

1
sysdeps/unix/sysv/linux/sparc/sparc64/syscalls.list
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@ -56,6 +56,7 @@ s_sigprocmask sigprocmask sigprocmask 3 __syscall_sigprocmask
s_sigsuspend sigsuspend sigsuspend 3 __syscall_sigsuspend
s_sysctl sysctl _sysctl 1 __syscall__sysctl
s_ustat ustat ustat 2 __syscall_ustat
s_vfork vfork vfork 0 __syscall_vfork
sys_fstat fxstat fstat 2 __syscall_fstat
sys_lstat lxstat lstat 2 __syscall_lstat
sys_mknod xmknod mknod 3 __syscall_mknod

2
sysdeps/unix/sysv/linux/syscalls.list
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@ -8,7 +8,7 @@ create_module EXTRA create_module 3 create_module
delete_module EXTRA delete_module 3 delete_module
fdatasync - fdatasync 1 fdatasync
flock - flock 2 __flock flock
fork - fork 0 __fork fork
fork - fork 0 __syscall_fork __fork fork
get_kernel_syms EXTRA get_kernel_syms 1 get_kernel_syms
getegid - getegid 0 __getegid getegid
geteuid - geteuid 0 __geteuid geteuid

51
sysdeps/unix/sysv/linux/vfork.c
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@ -1 +1,50 @@
#include <sysdeps/generic/vfork.c>
/* Copyright (C) 1992, 1995, 1997, 1999 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., 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA. */
#include <errno.h>
#include <unistd.h>
#include <sysdep.h>
#include <sys/syscall.h>
extern pid_t __syscall_fork __P ((void));
#ifdef __NR_vfork
extern pid_t __syscall_vfork __P ((void));
/* Use the system call. If it's not available, fork is close enough. */
pid_t
__vfork __P ((void))
{
pid_t retval = INLINE_SYSCALL (vfork, 0);
if (retval == (pid_t) -1 && errno == ENOSYS)
retval = INLINE_SYSCALL (fork, 0);
return retval;
}
#else
pid_t
__vfork __P ((void))
{
return INLINE_SYSCALL (fork, 0);
}
#endif
weak_alias (__vfork, vfork)