Update.

* sysdeps/unix/sysv/linux/i386/vfork.S: If SAVE_PID and
	RESTORE_PID are defined, use it.
	* sysdeps/unix/sysv/linux/x86_64/vfork.S: Likewise.

ChangeLog

@@ -1,5 +1,10 @@
 2004-03-08  Ulrich Drepper  <drepper@redhat.com>
 
+
+	* sysdeps/unix/sysv/linux/i386/vfork.S: If SAVE_PID and
+	RESTORE_PID are defined, use it.
+	* sysdeps/unix/sysv/linux/x86_64/vfork.S: Likewise.
+
 	* sysdeps/posix/gai_strerror.c: Add error string for EAI_IDN_ENCODE.
 
 	* Makerules: Use extra-modules.mk if modules-names is defined.

nptl/ChangeLog

@@ -1,7 +1,9 @@
 2004-03-08  Ulrich Drepper  <drepper@redhat.com>
 
 	* sysdeps/i386/tcb-offsets.sym: Add PID.
+	* sysdeps/x86_64/tcb-offsets.sym: Likewise.
 	* sysdeps/unix/sysv/linux/i386/vfork.S: New file.
+	* sysdeps/unix/sysv/linux/x86_64/vfork.S: New file.
 
 2004-03-08  Steven Munroe  <sjmunroe@us.ibm.com>
 

nptl/sysdeps/i386/tcb-offsets.sym

@@ -3,6 +3,7 @@
 
 RESULT			offsetof (struct pthread, result)
 TID			offsetof (struct pthread, tid)
+PID			offsetof (struct pthread, pid)
 CANCELHANDLING		offsetof (struct pthread, cancelhandling)
 CLEANUP_JMP_BUF		offsetof (struct pthread, cleanup_jmp_buf)
 MULTIPLE_THREADS_OFFSET	offsetof (tcbhead_t, multiple_threads)

nptl/sysdeps/unix/sysv/linux/i386/vfork.S

@@ -1,6 +1,5 @@
 /* Copyright (C) 1999, 2002, 2004 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
-   Contributed by Andreas Schwab <schwab@gnu.org>.
 
    The GNU C Library is free software; you can redistribute it and/or
    modify it under the terms of the GNU Lesser General Public
@@ -17,71 +16,19 @@
    Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
    02111-1307 USA.  */
 
-#include <sysdep.h>
-#define _ERRNO_H	1
-#include <bits/errno.h>
-#include <kernel-features.h>
 #include <tcb-offsets.h>
 
-/* Clone the calling process, but without copying the whole address space.
+/* Save the PID value.  */
-   The calling process is suspended until the new process exits or is
+#define SAVE_PID \
-   replaced by a call to `execve'.  Return -1 for errors, 0 to the new process,
+	movl	%gs:PID, %edx; 						      \
-   and the process ID of the new process to the old process.  */
-
-ENTRY (__vfork)
-
-#ifdef __NR_vfork
-
-	/* Pop the return PC value into ECX.  */
-	popl	%ecx
-
-	/* Save the PID value.  */
-	movl	%gs:PID, %edx
 	movl	$-1, %gs:PID
 
-	/* Stuff the syscall number in EAX and enter into the kernel.  */
+/* Restore the old PID value in the parent.  In the child store 0.  */
-	movl	$SYS_ify (vfork), %eax
+#define RESTORE_PID \
-	int	$0x80
+	testl	%eax, %eax;						      \
+	je	1f;							      \
+	movl	%edx, %gs:PID;						      \
+1:
 
-	/* Jump to the return PC.  Don't jump directly since this
-	   disturbs the branch target cache.  Instead push the return
-	   address back on the stack.  */
-	pushl	%ecx
 
-	/* Restore the old PID value in the parent.  In the child store 0.  */
+#include <sysdeps/unix/sysv/linux/i386/vfork.S>
-	testl	%eax, %eax
-	je	1f
-	movl	%edx, %gs:PID
-
-1:	cmpl	$-4095, %eax
-	/* Branch forward if it failed.  */
-# ifdef __ASSUME_VFORK_SYSCALL
-	jae	SYSCALL_ERROR_LABEL
-.Lpseudo_end:
-# else
-	jae	.Lerror
-# endif
-	ret
-
-# ifndef __ASSUME_VFORK_SYSCALL
-.Lerror:
-	/* Check if vfork syscall is known at all.  */
-	cmpl	$-ENOSYS, %eax
-	jne	SYSCALL_ERROR_LABEL
-# endif
-#endif
-
-#ifndef __ASSUME_VFORK_SYSCALL
-	/* If we don't have vfork, fork is close enough.  */
-
-	movl	$SYS_ify (fork), %eax
-	int	$0x80
-	cmpl	$-4095, %eax
-	jae	SYSCALL_ERROR_LABEL
-.Lpseudo_end:
-	ret
-#endif
-PSEUDO_END (__vfork)
-libc_hidden_def (__vfork)
-
-weak_alias (__vfork, vfork)

nptl/sysdeps/unix/sysv/linux/x86_64/vfork.S

@@ -0,0 +1,31 @@
+/* Copyright (C) 2004 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 Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 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
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, write to the Free
+   Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+   02111-1307 USA.  */
+
+#include <tcb-offsets.h>
+
+#define SAVE_PID \
+	movl	%fs:PID, %esi;						      \
+	movl	$-1, %fs:PID
+
+#define RESTORE_PID \
+	testq	%rax, %rax;						      \
+	je	1f;							      \
+	movl	%esi, %fs:PID;						      \
+1:
+
+#include <sysdeps/unix/sysv/linux/x86_64/vfork.S>

nptl/sysdeps/x86_64/tcb-offsets.sym

@@ -3,6 +3,7 @@
 
 RESULT			offsetof (struct pthread, result)
 TID			offsetof (struct pthread, tid)
+PID			offsetof (struct pthread, pid)
 CANCELHANDLING		offsetof (struct pthread, cancelhandling)
 CLEANUP_JMP_BUF		offsetof (struct pthread, cleanup_jmp_buf)
 CLEANUP			offsetof (struct pthread, cleanup)

sysdeps/unix/sysv/linux/i386/vfork.S

@@ -1,4 +1,4 @@
-/* Copyright (C) 1999, 2002 Free Software Foundation, Inc.
+/* Copyright (C) 1999, 2002, 2004 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
    Contributed by Andreas Schwab <schwab@gnu.org>.
 
@@ -34,6 +34,10 @@ ENTRY (__vfork)
 	/* Pop the return PC value into ECX.  */
 	popl	%ecx
 
+#ifdef SAVE_PID
+	SAVE_PID
+#endif
+
 	/* Stuff the syscall number in EAX and enter into the kernel.  */
 	movl	$SYS_ify (vfork), %eax
 	int	$0x80
@@ -43,6 +47,10 @@ ENTRY (__vfork)
 	   address back on the stack.  */
 	pushl	%ecx
 
+#ifdef RESTORE_PID
+	RESTORE_PID
+#endif
+
 	cmpl	$-4095, %eax
 	/* Branch forward if it failed.  */
 # ifdef __ASSUME_VFORK_SYSCALL

sysdeps/unix/sysv/linux/x86_64/vfork.S

@@ -32,6 +32,10 @@ ENTRY (__vfork)
 	popq	%rdi
 	cfi_adjust_cfa_offset(-8)
 
+#ifdef SAVE_PID
+	SAVE_PID
+#endif
+
 	/* Stuff the syscall number in RAX and enter into the kernel.  */
 	movl	$SYS_ify (vfork), %eax
 	syscall
@@ -40,6 +44,10 @@ ENTRY (__vfork)
 	pushq	%rdi
 	cfi_adjust_cfa_offset(8)
 
+#ifdef RESTORE_PID
+	RESTORE_PID
+#endif
+
 	cmpl	$-4095, %eax
 	jae SYSCALL_ERROR_LABEL		/* Branch forward if it failed.  */