diff options
author | Ulrich Drepper <drepper@redhat.com> | 2003-09-02 08:47:09 +0000 |
---|---|---|
committer | Ulrich Drepper <drepper@redhat.com> | 2003-09-02 08:47:09 +0000 |
commit | 8348dcc8ed4f262eefffcd9a9000aede69ad531e (patch) | |
tree | b02aeaab661c72902f6bb5a00b9f2bcf0f45e819 /nptl/sysdeps/unix/sysv/linux | |
parent | 7da1e9116ab8acfbec5b0afaf9ad57391ae25479 (diff) | |
download | glibc-8348dcc8ed4f262eefffcd9a9000aede69ad531e.tar.gz glibc-8348dcc8ed4f262eefffcd9a9000aede69ad531e.tar.xz glibc-8348dcc8ed4f262eefffcd9a9000aede69ad531e.zip |
Update.
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.
Diffstat (limited to 'nptl/sysdeps/unix/sysv/linux')
-rw-r--r-- | nptl/sysdeps/unix/sysv/linux/i386/lowlevellock.h | 96 | ||||
-rw-r--r-- | nptl/sysdeps/unix/sysv/linux/i386/not-cancel.h | 61 | ||||
-rw-r--r-- | nptl/sysdeps/unix/sysv/linux/i386/sysdep-cancel.h | 4 | ||||
-rw-r--r-- | nptl/sysdeps/unix/sysv/linux/x86_64/not-cancel.h | 1 | ||||
-rw-r--r-- | nptl/sysdeps/unix/sysv/linux/x86_64/sysdep-cancel.h | 4 |
5 files changed, 130 insertions, 36 deletions
diff --git a/nptl/sysdeps/unix/sysv/linux/i386/lowlevellock.h b/nptl/sysdeps/unix/sysv/linux/i386/lowlevellock.h index bd3fe4c012..cf88c54a59 100644 --- a/nptl/sysdeps/unix/sysv/linux/i386/lowlevellock.h +++ b/nptl/sysdeps/unix/sysv/linux/i386/lowlevellock.h @@ -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) \ diff --git a/nptl/sysdeps/unix/sysv/linux/i386/not-cancel.h b/nptl/sysdeps/unix/sysv/linux/i386/not-cancel.h new file mode 100644 index 0000000000..77ea727969 --- /dev/null +++ b/nptl/sysdeps/unix/sysv/linux/i386/not-cancel.h @@ -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 diff --git a/nptl/sysdeps/unix/sysv/linux/i386/sysdep-cancel.h b/nptl/sysdeps/unix/sysv/linux/i386/sysdep-cancel.h index e932359327..8eb6ede89d 100644 --- a/nptl/sysdeps/unix/sysv/linux/i386/sysdep-cancel.h +++ b/nptl/sysdeps/unix/sysv/linux/i386/sysdep-cancel.h @@ -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 \ diff --git a/nptl/sysdeps/unix/sysv/linux/x86_64/not-cancel.h b/nptl/sysdeps/unix/sysv/linux/x86_64/not-cancel.h new file mode 100644 index 0000000000..c402e382d4 --- /dev/null +++ b/nptl/sysdeps/unix/sysv/linux/x86_64/not-cancel.h @@ -0,0 +1 @@ +#include "../i386/test-cancel.h" diff --git a/nptl/sysdeps/unix/sysv/linux/x86_64/sysdep-cancel.h b/nptl/sysdeps/unix/sysv/linux/x86_64/sysdep-cancel.h index 8081d72468..f8d726ddd8 100644 --- a/nptl/sysdeps/unix/sysv/linux/x86_64/sysdep-cancel.h +++ b/nptl/sysdeps/unix/sysv/linux/x86_64/sysdep-cancel.h @@ -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 \ |