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MIPS: Consolidate NPTL/non versions of vfork

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Roland McGrath 2014-06-27 09:58:51 -07:00
parent 6f12d0629f
commit 58eb0862c3
5 changed files with 27 additions and 87 deletions
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8
ChangeLog
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@ -1,3 +1,11 @@
2014-06-27 Roland McGrath <roland@hack.frob.com>
* sysdeps/unix/sysv/linux/mips/vfork.S: Incorporate
SAVE_PID and RESTORE_PID blocks from nptl/pt-vfork.S.
* sysdeps/unix/sysv/linux/mips/nptl/vfork.S: File removed.
* sysdeps/unix/sysv/linux/mips/nptl/pt-vfork.S: File removed.
* sysdeps/unix/sysv/linux/mips/pt-vfork.S: New file.
2014-06-27 Arjun Shankar <arjun.is@lostca.se>
[BZ #17092]

36
sysdeps/unix/sysv/linux/mips/nptl/pt-vfork.S
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@ -1,36 +0,0 @@
/* Copyright (C) 2005-2014 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, see
<http://www.gnu.org/licenses/>. */
#include <tls.h>
/* Save the PID value. */
#define SAVE_PID \
READ_THREAD_POINTER(v1); /* Get the thread pointer. */ \
lw a2, PID_OFFSET(v1); /* Load the saved PID. */ \
subu a2, $0, a2; /* Negate it. */ \
sw a2, PID_OFFSET(v1); /* Store the temporary PID. */
/* Restore the old PID value in the parent. */
#define RESTORE_PID \
beqz v0, 1f; /* If we are the parent... */ \
READ_THREAD_POINTER(v1); /* Get the thread pointer. */ \
lw a2, PID_OFFSET(v1); /* Load the saved PID. */ \
subu a2, $0, a2; /* Re-negate it. */ \
sw a2, PID_OFFSET(v1); /* Restore the PID. */ \
1:
#include <sysdeps/unix/sysv/linux/mips/vfork.S>

41
sysdeps/unix/sysv/linux/mips/nptl/vfork.S
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@ -1,41 +0,0 @@
/* Copyright (C) 2005-2014 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, see
<http://www.gnu.org/licenses/>. */
#include <tls.h>
/* Save the PID value. */
#define SAVE_PID \
READ_THREAD_POINTER(v1); /* Get the thread pointer. */ \
lw a2, PID_OFFSET(v1); /* Load the saved PID. */ \
subu a2, $0, a2; /* Negate it. */ \
bnez a2, 1f; /* If it was zero... */ \
lui a2, 0x8000; /* use 0x80000000 instead. */ \
1: sw a2, PID_OFFSET(v1); /* Store the temporary PID. */
/* Restore the old PID value in the parent. */
#define RESTORE_PID \
beqz v0, 1f; /* If we are the parent... */ \
READ_THREAD_POINTER(v1); /* Get the thread pointer. */ \
lw a2, PID_OFFSET(v1); /* Load the saved PID. */ \
subu a2, $0, a2; /* Re-negate it. */ \
lui a0, 0x8000; /* Load 0x80000000... */ \
bne a2, a0, 2f; /* ... compare against it... */ \
li a2, 0; /* ... use 0 instead. */ \
2: sw a2, PID_OFFSET(v1); /* Restore the PID. */ \
1:
#include <sysdeps/unix/sysv/linux/mips/vfork.S>

1
sysdeps/unix/sysv/linux/mips/pt-vfork.S Normal file
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@ -0,0 +1 @@
#include <sysdeps/unix/sysv/linux/alpha/pt-vfork.S>

28
sysdeps/unix/sysv/linux/mips/vfork.S
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@ -21,14 +21,7 @@
#include <sysdep.h>
#include <asm/unistd.h>
#include <sgidefs.h>
#ifndef SAVE_PID
#define SAVE_PID
#endif
#ifndef RESTORE_PID
#define RESTORE_PID
#endif
#include <tls.h>
/* int vfork() */
@ -67,7 +60,13 @@ NESTED(__vfork,FRAMESZ,sp)
PTR_ADDU sp, FRAMESZ
cfi_adjust_cfa_offset (-FRAMESZ)
SAVE_PID
/* Save the PID value. */
READ_THREAD_POINTER(v1) /* Get the thread pointer. */
lw a2, PID_OFFSET(v1) /* Load the saved PID. */
subu a2, $0, a2 /* Negate it. */
bnez a2, 1f /* If it was zero... */
lui a2, 0x8000 /* use 0x80000000 instead. */
1: sw a2, PID_OFFSET(v1) /* Store the temporary PID. */
li a0, 0x4112 /* CLONE_VM | CLONE_VFORK | SIGCHLD */
move a1, sp
@ -76,7 +75,16 @@ NESTED(__vfork,FRAMESZ,sp)
li v0,__NR_clone
syscall
RESTORE_PID
/* Restore the old PID value in the parent. */
beqz v0, 1f /* If we are the parent... */
READ_THREAD_POINTER(v1) /* Get the thread pointer. */
lw a2, PID_OFFSET(v1) /* Load the saved PID. */
subu a2, $0, a2 /* Re-negate it. */
lui a0, 0x8000 /* Load 0x80000000... */
bne a2, a0, 2f /* ... compare against it... */
li a2, 0 /* ... use 0 instead. */
2: sw a2, PID_OFFSET(v1) /* Restore the PID. */
1:
cfi_remember_state
bnez a3,L(error)