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2003-09-02  Ulrich Drepper  <drepper@redhat.com>

	* sysdeps/unix/sysv/linux/i386/not-cancel.h: New file.
	* sysdeps/unix/sysv/linux/x86-64/not-cancel.h: New file.

	* sysdeps/unix/sysv/linux/i386/lowlevellock.h: Make sure the code
	in subsections has a symbol associated with it.

	* sysdeps/unix/sysv/linux/i386/sysdep-cancel.h (PSEUDO): Also
	defined symbol for entry point to avoid cancellation.
	* sysdeps/unix/sysv/linux/x86_64/sysdep-cancel.h (PSEUDO): Likewise.
This commit is contained in:
Ulrich Drepper 2003-09-02 08:47:09 +00:00
parent 7da1e9116a
commit 8348dcc8ed
7 changed files with 143 additions and 36 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

12
nptl/ChangeLog
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@ -1,3 +1,15 @@
2003-09-02 Ulrich Drepper <drepper@redhat.com>
* sysdeps/unix/sysv/linux/i386/not-cancel.h: New file.
* sysdeps/unix/sysv/linux/x86-64/not-cancel.h: New file.
* sysdeps/unix/sysv/linux/i386/lowlevellock.h: Make sure the code
in subsections has a symbol associated with it.
* sysdeps/unix/sysv/linux/i386/sysdep-cancel.h (PSEUDO): Also
defined symbol for entry point to avoid cancellation.
* sysdeps/unix/sysv/linux/x86_64/sysdep-cancel.h (PSEUDO): Likewise.
2003-09-01 Jakub Jelinek <jakub@redhat.com>
* Makefile (tests): Add tst-tls5.

96
nptl/sysdeps/unix/sysv/linux/i386/lowlevellock.h
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@ -114,13 +114,16 @@ extern int __lll_mutex_unlock_wait (int *__futex)
(void) ({ int ignore1, ignore2; \
__asm __volatile (LOCK_INSTR "xaddl %0, %2\n\t" \
"testl %0, %0\n\t" \
"jne 1f\n\t" \
".subsection 1\n" \
"1:\tleal %2, %%ecx\n\t" \
"jne _L_mutex_lock_%=\n\t" \
".subsection 1\n\t" \
".type _L_mutex_lock_%=,@function\n" \
"_L_mutex_lock_%=:\n\t" \
"leal %2, %%ecx\n\t" \
"call __lll_mutex_lock_wait\n\t" \
"jmp 2f\n\t" \
"jmp 1f\n\t" \
".size _L_mutex_lock_%=,.-_L_mutex_lock_%=\n" \
".previous\n" \
"2:" \
"1:" \
: "=a" (ignore1), "=&c" (ignore2), "=m" (futex) \
: "0" (1), "2" (futex) \
: "memory"); })
@ -132,13 +135,16 @@ extern int __lll_mutex_unlock_wait (int *__futex)
(void) ({ int ignore1, ignore2; \
__asm __volatile (LOCK_INSTR "xaddl %0, %2\n\t" \
"testl %0, %0\n\t" \
"jne 1f\n\t" \
".subsection 1\n" \
"1:\tleal %2, %%ecx\n\t" \
"jne _L_mutex_cond_lock_%=\n\t" \
".subsection 1\n\t" \
".type _L_mutex_cond_lock_%=,@function\n" \
"_L_mutex_cond_lock_%=:\n\t" \
"leal %2, %%ecx\n\t" \
"call __lll_mutex_lock_wait\n\t" \
"jmp 2f\n\t" \
"jmp 1f\n\t" \
".size _L_mutex_cond_lock_%=,.-_L_mutex_cond_lock_%=\n" \
".previous\n" \
"2:" \
"1:" \
: "=a" (ignore1), "=&c" (ignore2), "=m" (futex) \
: "0" (2), "2" (futex) \
: "memory"); })
@ -148,14 +154,17 @@ extern int __lll_mutex_unlock_wait (int *__futex)
({ int result, ignore1, ignore2; \
__asm __volatile (LOCK_INSTR "xaddl %0, %3\n\t" \
"testl %0, %0\n\t" \
"jne 1f\n\t" \
".subsection 1\n" \
"1:\tleal %3, %%ecx\n\t" \
"jne _L_mutex_timedlock_%=\n\t" \
".subsection 1\n\t" \
".type _L_mutex_timedlock_%=,@function\n" \
"_L_mutex_timedlock_%=:\n\t" \
"leal %3, %%ecx\n\t" \
"movl %6, %%edx\n\t" \
"call __lll_mutex_timedlock_wait\n\t" \
"jmp 2f\n\t" \
"jmp 1f\n\t" \
".size _L_mutex_timedlock_%=,.-_L_mutex_timedlock_%=\n"\
".previous\n" \
"2:" \
"1:" \
: "=a" (result), "=&c" (ignore1), "=&d" (ignore2), \
"=m" (futex) \
: "0" (1), "3" (futex), "m" (timeout) \
@ -166,13 +175,16 @@ extern int __lll_mutex_unlock_wait (int *__futex)
#define lll_mutex_unlock(futex) \
(void) ({ int ignore; \
__asm __volatile (LOCK_INSTR "subl $1,%0\n\t" \
"jne 1f\n\t" \
".subsection 1\n" \
"1:\tleal %0, %%eax\n\t" \
"jne _L_mutex_unlock_%=\n\t" \
".subsection 1\n\t" \
".type _L_mutex_unlock_%=,@function\n" \
"_L_mutex_unlock_%=:\n\t" \
"leal %0, %%eax\n\t" \
"call __lll_mutex_unlock_wake\n\t" \
"jmp 2f\n\t" \
"jmp 1f\n\t" \
".size _L_mutex_unlock_%=,.-_L_mutex_unlock_%=\n" \
".previous\n" \
"2:" \
"1:" \
: "=m" (futex), "=&a" (ignore) \
: "0" (futex) \
: "memory"); })
@ -219,13 +231,16 @@ extern int lll_unlock_wake_cb (int *__futex) attribute_hidden;
# define lll_lock(futex) \
(void) ({ int ignore1, ignore2; \
__asm __volatile (LOCK_INSTR "xaddl %0, %2\n\t" \
"jne 1f\n\t" \
".subsection 1\n" \
"1:\tleal %2, %%ecx\n\t" \
"jne _L_lock_%=\n\t" \
".subsection 1\n\t" \
".type _L_lock_%=,@function\n" \
"_L_lock_%=:\n\t" \
"leal %2, %%ecx\n\t" \
"call __lll_lock_wait\n\t" \
"jmp 2f\n\t" \
"jmp 1f\n\t" \
".size _L_lock_%=,.-_L_lock_%=\n" \
".previous\n" \
"2:" \
"1:" \
: "=a" (ignore1), "=&c" (ignore2), "=m" (futex) \
: "0" (-1), "2" (futex) \
: "memory"); })
@ -234,13 +249,16 @@ extern int lll_unlock_wake_cb (int *__futex) attribute_hidden;
# define lll_unlock(futex) \
(void) ({ int ignore; \
__asm __volatile (LOCK_INSTR "addl $1,%0\n\t" \
"jng 1f\n\t" \
".subsection 1\n" \
"1:\tleal %0, %%eax\n\t" \
"jng _L_unlock_%=\n\t" \
".subsection 1\n\t" \
".type _L_unlock_%=,@function\n" \
"_L_unlock_%=:\n\t" \
"leal %0, %%eax\n\t" \
"call __lll_unlock_wake\n\t" \
"jmp 2f\n\t" \
"jmp 1f\n\t" \
".size _L_unlock_%=,.-_L_unlock_%=\n" \
".previous\n" \
"2:" \
"1:" \
: "=m" (futex), "=&a" (ignore) \
: "0" (futex) \
: "memory"); })
@ -270,11 +288,14 @@ extern int lll_unlock_wake_cb (int *__futex) attribute_hidden;
"je,pt 0f\n\t" \
"lock\n" \
"0:\txaddl %0, %2\n\t" \
"jne 1f\n\t" \
".subsection 1\n" \
"1:\tleal %2, %%ecx\n\t" \
"jne _L_lock_%=\n\t" \
".subsection 1\n\t" \
".type _L_lock_%=,@function\n" \
"_L_lock_%=:\n\t" \
"leal %2, %%ecx\n\t" \
"call __lll_lock_wait\n\t" \
"jmp 2f\n\t" \
".size _L_lock_%=,.-_L_lock_%=\n" \
".previous\n" \
"2:" \
: "=a" (ignore1), "=&c" (ignore2), "=m" (futex) \
@ -289,11 +310,14 @@ extern int lll_unlock_wake_cb (int *__futex) attribute_hidden;
"je,pt 0f\n\t" \
"lock\n" \
"0:\taddl $1,%0\n\t" \
"jng 1f\n\t" \
".subsection 1\n" \
"1:\tleal %0, %%eax\n\t" \
"jng _L_unlock_%=\n\t" \
".subsection 1\n\t" \
".type _L_unlock_%=,@function\n" \
"_L_unlock_%=:\n\t" \
"leal %0, %%eax\n\t" \
"call __lll_unlock_wake\n\t" \
"jmp 2f\n\t" \
".size _L_unlock_%=,.-_L_unlock_%=\n" \
".previous\n" \
"2:" \
: "=m" (futex), "=&a" (ignore) \

61
nptl/sysdeps/unix/sysv/linux/i386/not-cancel.h Normal file
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@ -0,0 +1,61 @@
/* Uncancelable versions of cancelable interfaces. Linux version.
Copyright (C) 2003 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Ulrich Drepper <drepper@redhat.com>, 2003.
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 <sysdep.h>
/* Uncancelable open. */
extern int __open_nocancel (const char *, int, ...);
#define open_not_cancel(name, flags, mode) \
__open_nocancel (name, flags, mode)
#define open_not_cancel_2(name, flags) \
__open_nocancel (name, flags)
/* Uncancelable close. */
extern int __close_nocancel (int);
#define close_not_cancel(fd) \
__close_nocancel (fd)
#define close_not_cancel_no_status(fd) \
(void) ({ INTERNAL_SYSCALL_DECL (err); \
INTERNAL_SYSCALL (close, err, 1, (fd)); })
/* Uncancelable read. */
extern int __read_nocancel (int, void *, size_t);
#define read_not_cancel(fd, buf, n) \
__read_nocancel (fd, buf, n)
/* Uncancelable write. */
extern int __write_nocancel (int, const void *, size_t);
#define write_not_cancel(fd, buf, n) \
__write_nocancel (fd, buf, n)
/* Uncancelable writev. */
#define writev_not_cancel_no_status(fd, iov, n) \
(void) ({ INTERNAL_SYSCALL_DECL (err); \
INTERNAL_SYSCALL (writev, err, 3, (fd), (iov), (n)); })
/* Uncancelable waitpid. */
#ifdef __NR_waitpid
extern pid_t __waitpid_nocancel (pid_t, int *, int);
# define waitpid_not_cancel(pid, stat_loc, options) \
__waitpid_nocancel (pid, stat_loc, options)
#else
# define waitpid_not_cancel(pid, stat_loc, options) \
INLINE_SYSCALL (wait4, 4, pid, stat_loc, options, NULL)
#endif

4
nptl/sysdeps/unix/sysv/linux/i386/sysdep-cancel.h
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@ -32,10 +32,14 @@
L(name##START): \
cmpl $0, %gs:MULTIPLE_THREADS_OFFSET; \
jne L(pseudo_cancel); \
.type __##syscall_name##_nocancel,@function; \
.globl __##syscall_name##_nocancel; \
__##syscall_name##_nocancel: \
DO_CALL (syscall_name, args); \
cmpl $-4095, %eax; \
jae SYSCALL_ERROR_LABEL; \
ret; \
.size __##syscall_name##_nocancel,.-__##syscall_name##_nocancel; \
L(pseudo_cancel): \
CENABLE \
SAVE_OLDTYPE_##args \

1
nptl/sysdeps/unix/sysv/linux/x86_64/not-cancel.h Normal file
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@ -0,0 +1 @@
#include "../i386/test-cancel.h"

4
nptl/sysdeps/unix/sysv/linux/x86_64/sysdep-cancel.h
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@ -31,10 +31,14 @@
ENTRY (name) \
SINGLE_THREAD_P; \
jne L(pseudo_cancel); \
.type __##syscall_name##_nocancel,@function; \
.globl __##syscall_name##_nocancel; \
__##syscall_name##_nocancel: \
DO_CALL (syscall_name, args); \
cmpq $-4095, %rax; \
jae SYSCALL_ERROR_LABEL; \
ret; \
.size __##syscall_name##_nocancel,.-__##syscall_name##_nocancel; \
L(pseudo_cancel): \
/* Save registers that might get destroyed. */ \
SAVESTK_##args \

1
sysdeps/unix/sysv/linux/i386/syscalls.list
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@ -5,3 +5,4 @@ vm86 - vm86 i:p __vm86 vm86
oldgetrlimit EXTRA getrlimit i:ip __old_getrlimit getrlimit@GLIBC_2.0
oldsetrlimit EXTRA setrlimit i:ip __old_setrlimit setrlimit@GLIBC_2.0
time - time Ei:p time
waitpid - waitpid Ci:ipi __waitpid waitpid __libc_waitpid