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author | Ulrich Drepper <drepper@redhat.com> | 2002-11-26 22:50:54 +0000 |
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committer | Ulrich Drepper <drepper@redhat.com> | 2002-11-26 22:50:54 +0000 |
commit | 76a50749f7af5935ba3739e815aa6a16ae4440d1 (patch) | |
tree | c16eac47f220f03fea74d80ef0a4e774809e94b7 /nptl/sysdeps/unix/sysv/linux/i386/i486/lowlevelsem.S | |
parent | 6938e63f714b15c377d8cbf8e97b6f15b0e1b692 (diff) | |
download | glibc-76a50749f7af5935ba3739e815aa6a16ae4440d1.tar.gz glibc-76a50749f7af5935ba3739e815aa6a16ae4440d1.tar.xz glibc-76a50749f7af5935ba3739e815aa6a16ae4440d1.zip |
Initial revision cvs/initial
2002-11-26 Ulrich Drepper <drepper@redhat.com> * allocatestack.c (queue_stack): Don't remove stack from list here. Do it in the caller. Correct condition to prematurely terminate loop to free stacks. (__deallocate_stack): Remove stack from list here. 2002-11-26 Ulrich Drepper <drepper@redhat.com> * Makefile (tests): Add tst-stack1. * tst-stack1.c: New file. * allocatestack.c (allocate_stack): Initialize the TCB on a user provided stack. * pthread_attr_getstack.c: Return bottom of the thread area. 2002-11-25 Ulrich Drepper <drepper@redhat.com> * Makefile (libpthread-routines): Add pt-allocrtsig and pthread_kill_other_threads. * pt-allocrtsig.c: New file. * pthread_kill_other_threads.c: New file. * sysdeps/unix/sysv/linux/allocrtsig.c: Add additional aliases for all three functions. * sysdeps/unix/sysv/linux/Makefile (sysdep_routines): Remove allocrtsig. * sysdeps/unix/sysv/linux/Versions (libc:GLIBC_PRIVATE): Export __libc_current_sigrtmin_private, __libc_current_sigrtmax_private, and __libc_allocate_rtsig_private. * Versions (libpthread): Export pthread_kill_other_threads_np, __libc_current_sigrtmin, and __libc_current_sigrtmax. 2002-11-24 Ulrich Drepper <drepper@redhat.com> * allocatestack.c (allocate_stack): stackaddr in attribute points to the end of the stack. Adjust computations. When mprotect call fails dequeue stack and free it. * pthread_attr_setstack.c: Store top of the stack in stackaddr attribute. * pthread_getattr_np.c: Likewise. * descr.h (IS_DETACHED): Add some more parenthesis to prevent surprises. 2002-11-23 Ulrich Drepper <drepper@redhat.com> * sysdeps/pthread/pthread.h (pthread_self): __THROW must come before attribute definitions. Patch by Luca Barbieri <ldb@ldb.ods.org>. 2002-11-22 Ulrich Drepper <drepper@redhat.com> * pthread_getspecific.c: Optimize access to first 2nd-level array. * pthread_setspecific.c: Likewise. 2002-11-21 Ulrich Drepper <drepper@redhat.com> * sysdeps/unix/sysv/linux/i386/createthread.c: Remove CLONE_ flags definitions. Get them from the official place. * sysdeps/unix/sysv/linux/i386/fork.c: Likewise. * sysdeps/unix/sysv/linux/i386/createthread.c: Update CLONE_* flags. Use new CLONE_ flags in clone() calls. * sysdeps/unix/sysv/linux/fork.c: Use ARCH_FORK to actually fork. * sysdeps/unix/sysv/linux/i386/fork.c: New file. * Versions: Add pthread_* functions for libc. * forward.c: New file. * sysdeps/pthread/Makefile (libpthread-sysdeps_routines): Add errno-loc. * herrno.c: New file. * res.c: New file. * Makefile (libpthread-routines): Remove sem_post, sem_wait, sem_trywait, and sem_timedwait. Add herrno and res. * sem_init.c: Don't initialize lock and waiters members. * sem_open.c: Likewise. * sem_post.c: Removed. * sem_wait.c: Removed. * sem_trywait.c: Removed. * sem_timedwait.c: Removed. * sysdeps/unix/sysv/linux/i386/i486/lowlevelsem.S: Complete rewrite. Includes full implementations of sem_post, sem_wait, sem_trywait, and sem_timedwait. * sysdeps/unix/sysv/linux/i386/lowlevelsem.h (lll_sem_post): Adjust for new implementation. * sysdeps/unix/sysv/linux/internaltypes.h (struct sem): Remove lock and waiters fields. * tst-sem3.c: Improve error message. * tst-signal3.c: Likewise. * init.c (__pthread_initialize_minimal): Use set_tid_address syscall to tell the kernel about the termination futex and to initialize tid member. Don't initialize main_thread. * descr.h (struct pthread): Remove main_thread member. * cancelllation.c (__do_cancel): Remove code handling main thread. The main thread is not special anymore. * allocatestack.c (__reclaim_stacks): Mark stacks as unused. Add size of the stacks to stack_cache_actsize. * pt-readv.c: Add missing "defined". * pt-sigwait.c: Likewise. * pt-writev.c: Likewise. 2002-11-09 Ulrich Drepper <drepper@redhat.com> * Versions: Export __connect from libpthread. Patch by Luca Barbieri <ldb@ldb.ods.org>. * Makefile (libpthread-routines): Add pt-raise. * sysdeps/unix/sysv/linux/raise.c: New file. * sysdeps/unix/sysv/linux/pt-raise.c: New file. * sysdeps/generic/pt-raise.c: New file. * pthread_cond_init.c: Initialize all data elements of the condvar structure. Patch by Luca Barbieri <ldb@ldb.ods.org>. * pthread_attr_init.c: Actually implement 2.0 compatibility version. * pthread_create.c: Likewise. * Makefile (tests): Add tst-key1, tst-key2, tst-key3. * tst-key1.c: New file. * tst-key2.c: New file. * tst-key3.c: New file. * Versions: Export pthread_detach for version GLIBC_2.0. Reported by Saurabh Desai <sdesai@austin.ibm.com>. 2002-11-08 Ulrich Drepper <drepper@redhat.com> * pthread_key_create.c: Terminate search after an unused key was found. Patch by Luca Barbieri <ldb@ldb.ods.org>. * sysdeps/unix/sysv/linux/i386/pthread_once.S: Return zero. Patch by Luca Barbieri <ldb@ldb.ods.org>. 2002-10-10 Ulrich Drepper <drepper@redhat.com> * sysdeps/unix/sysv/linux/i386/i486/lowlevelsem.S: Use slow generic dynamic lookup for errno in PIC. * allocatestack.c (get_cached_stack): Rearrange code slightly to release the stack lock as soon as possible. Call _dl_allocate_tls_init for TCB from the cache to re-initialize the static TLS block. (allocate_stack): Call _dl_allocate_tls_init for user-provided stack. * cancellation.c: Renamed from cancelation.c. * Makefile: Adjust accordingly. * pthreadP.h (CANCELLATION_P): Renamed from CANCELATION_P. * cleanup_defer.c: Use CANCELLATION_P. * pthread_testcancel.c: Likewise. * descr.h: Fix spelling in comments. * init.c: Likewise. * pthread_getattr_np.c: Likewise. * pthread_getschedparam.c: Likewise. * pthread_setschedparam.c: Likewise. * Versions: Likewise. * pt-pselect.c: New file. * Makefile (libpthread-routines): Add pt-pselect. * Versions: Add pselect. * tst-cancel4.c: New file. * Makefile (tests): Add tst-cancel4. 2002-10-09 Ulrich Drepper <drepper@redhat.com> * pthread_mutex_lock.c: Always record lock ownership. * pthread_mutex_timedlock.c: Likewise. * pthread_mutex_trylock.c: Likewise. * pt-readv.c: New file. * pt-writev.c: New file. * pt-creat.c: New file. * pt-msgrcv.c: New file. * pt-msgsnd.c: New file. * pt-poll.c: New file. * pt-select.c: New file. * pt-sigpause.c: New file. * pt-sigsuspend.c: New file. * pt-sigwait.c: New file. * pt-sigwaitinfo.c: New file. * pt-waitid.c: New file. * Makefile (libpthread-routines): Add pt-readv, pt-writev, pt-creat, pt-msgrcv, pt-msgsnd, pt-poll, pt-select, pt-sigpause, pt-sigsuspend, pt-sigwait, pt-sigwaitinfo, and pt-waitid. * Versions: Add all the new functions. * tst-exit1.c: New file. * Makefile (tests): Add tst-exit1. * sem_timedwait.c: Minor optimization for more optimal fastpath. 2002-10-08 Ulrich Drepper <drepper@redhat.com> * pt-fcntl.c: Only enable asynchronous cancellation for F_SETLKW. * pthread_join.c: Enable asynchronous cancellation around lll_wait_tid call. pthread_join is an official cancellation point. * pthread_timedjoin.c: Likewise. * pthread_cond_wait.c: Revert order in which internal lock are dropped and the condvar's mutex are retrieved. * pthread_cond_timedwait.c: Likewise. Reported by dice@saros.East.Sun.COM. 2002-10-07 Ulrich Drepper <drepper@redhat.com> * pthreadP.h: Cut out all type definitions and move them... * sysdeps/unix/sysv/linux/internaltypes.h: ...here. New file. * pthreadP.h: Include <internaltypes.h>. * sysdeps/unix/sysv/linux/i386/lowlevelsem.h (lll_sem_post): Little performance tweaks. * sem_trywait.c: Shuffle #includes around to get right order. * sem_timedwait.c: Likewise. * sem_post.c: Likewise. * sem_wait.c: Likewise. * nptl 0.3 released. * Makefile (tests): Add tst-signal3. * tst-signal3.c: New file. 2002-10-05 Ulrich Drepper <drepper@redhat.com> * sysdeps/unix/sysv/linux/i386/lowlevelsem.h: Tell the compiler that the asms modify the sem object. (__lll_sem_timedwait): Now takes struct sem* as first parameter. * sysdeps/unix/sysv/linux/i386/bits/semaphore.h (sem_t): Don't expose the actual members. * pthreadP.h (struct sem): New type. Actual semaphore type. * semaphoreP.h: Include pthreadP.h. * sem_getvalue.c: Adjust to sem_t change. * sem_init.c: Likewise. * sem_open.c: Likewise. * sem_post.c: Likewise. * sem_timedwait.c: Likewise. * sem_trywait.c: Likewise. * sem_wait.c: Likewise. 2002-10-04 Ulrich Drepper <drepper@redhat.com> * Makefile (tests): Add tst-basic2, tst-exec1, tst-exec3, tst-exec3. * tst-basic2.c: New file. * tst-exec1.c: New file. * tst-exec2.c: New file. * tst-exec3.c: New file. * tst-fork1.c: Remove extra */. * nptl 0.2 released. The API for IA-32 is complete.
Diffstat (limited to 'nptl/sysdeps/unix/sysv/linux/i386/i486/lowlevelsem.S')
-rw-r--r-- | nptl/sysdeps/unix/sysv/linux/i386/i486/lowlevelsem.S | 311 |
1 files changed, 311 insertions, 0 deletions
diff --git a/nptl/sysdeps/unix/sysv/linux/i386/i486/lowlevelsem.S b/nptl/sysdeps/unix/sysv/linux/i386/i486/lowlevelsem.S new file mode 100644 index 0000000000..18fb16f6f6 --- /dev/null +++ b/nptl/sysdeps/unix/sysv/linux/i386/i486/lowlevelsem.S @@ -0,0 +1,311 @@ +/* Copyright (C) 2002 Free Software Foundation, Inc. + This file is part of the GNU C Library. + Contributed by Ulrich Drepper <drepper@redhat.com>, 2002. + + 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> +#include <shlib-compat.h> + + .text + +#ifndef UP +# define LOCK lock +#else +# define +#endif + +#define SYS_gettimeofday __NR_gettimeofday +#define SYS_futex 240 +#define FUTEX_WAKE 1 + +#define EINTR 4 +#define EAGAIN 11 +#define EWOULDBLOCK EAGAIN +#define EINVAL 22 +#define ETIMEDOUT 110 + + + .globl __new_sem_wait + .type __new_sem_wait,@function + .align 16 +__new_sem_wait: + pushl %ebx + pushl %esi + + movl 12(%esp), %ebx + +3: movl (%ebx), %eax +2: testl %eax, %eax + je,pn 1f + + leal -1(%eax), %edx + LOCK + cmpxchgl %edx, (%ebx) + jne,pn 2b + xorl %eax, %eax + + popl %esi + popl %ebx + ret + +1: xorl %esi, %esi + movl $SYS_futex, %eax + movl %esi, %ecx + movl %esi, %edx + int $0x80 + + testl %eax, %eax + je 3b + cmpl $-EWOULDBLOCK, %eax + je 3b + negl %eax +#ifdef PIC + call __i686.get_pc_thunk.bx +#else + movl $4f, %ebx +4: +#endif + addl $_GLOBAL_OFFSET_TABLE_, %ebx + movl %gs:0, %edx + subl errno@gottpoff(%ebx), %edx + movl %eax, (%edx) + orl $-1, %eax + popl %esi + popl %ebx + ret + .size __new_sem_wait,.-__new_sem_wait + .symver __new_sem_wait, sem_wait@@GLIBC_2.1 +#if SHLIB_COMPAT(libpthread, GLIBC_2_0, GLIBC_2_1) + .global __old_sem_wait +__old_sem_wait = __new_sem_wait + .symver __old_sem_wait, sem_wait@GLIBC_2.0 +#endif + + + .globl __new_sem_trywait + .type __new_sem_trywait,@function + .align 16 +__new_sem_trywait: + movl 4(%esp), %ecx + + movl (%ecx), %eax +2: testl %eax, %eax + jz 1f + + leal -1(%eax), %edx + LOCK + cmpxchgl %edx, (%ecx) + jne,pn 2b + xorl %eax, %eax + ret + +1: +#ifdef PIC + call __i686.get_pc_thunk.cx +#else + movl $3f, %ecx +3: +#endif + addl $_GLOBAL_OFFSET_TABLE_, %ecx + movl %gs:0, %edx + subl errno@gottpoff(%ecx), %edx + movl $EAGAIN, (%edx) + orl $-1, %eax + ret + .size __new_sem_trywait,.-__new_sem_trywait + .symver __new_sem_trywait, sem_trywait@@GLIBC_2.1 +#if SHLIB_COMPAT(libpthread, GLIBC_2_0, GLIBC_2_1) + .global __old_sem_trywait +__old_sem_trywait = __new_sem_trywait + .symver __old_sem_trywait, sem_trywait@GLIBC_2.0 +#endif + + + .globl sem_timedwait + .type sem_timedwait,@function + .align 16 +sem_timedwait: + movl 4(%esp), %ecx + + movl (%ecx), %eax +2: testl %eax, %eax + je,pn 1f + + leal -1(%eax), %edx + LOCK + cmpxchgl %edx, (%ecx) + jne,pn 2b + + xorl %eax, %eax + ret + + /* Check whether the timeout value is valid. */ +1: pushl %esi + pushl %edi + pushl %ebx + subl $8, %esp + + movl %esp, %esi + movl 28(%esp), %edi + + /* Check for invalid nanosecond field. */ + cmpl $1000000000, 4(%edi) + movl $EINVAL, %eax + jae 6f + +7: xorl %ecx, %ecx + movl %esp, %ebx + movl %ecx, %edx + movl $SYS_gettimeofday, %eax + int $0x80 + + /* Compute relative timeout. */ + movl 4(%esp), %eax + movl $1000, %edx + mul %edx /* Milli seconds to nano seconds. */ + movl (%edi), %ecx + movl 4(%edi), %edx + subl (%esp), %ecx + subl %eax, %edx + jns 5f + addl $1000000000, %edx + decl %ecx +5: testl %ecx, %ecx + movl $ETIMEDOUT, %eax + js 6f /* Time is already up. */ + + movl %ecx, (%esp) /* Store relative timeout. */ + movl %edx, 4(%esp) + movl 24(%esp), %ebx + xorl %ecx, %ecx + movl $SYS_futex, %eax + xorl %edx, %edx + int $0x80 + + testl %eax, %eax + je,pt 9f + cmpl $-EWOULDBLOCK, %eax + jne 3f + +9: movl (%ebx), %eax +8: testl %eax, %eax + je 7b + + leal -1(%eax), %ecx + LOCK + cmpxchgl %ecx, (%ebx) + jne,pn 8b + + addl $8, %esp + xorl %eax, %eax + popl %ebx + popl %edi + popl %esi + ret + +3: negl %eax +6: +#ifdef PIC + call __i686.get_pc_thunk.bx +#else + movl $4f, %ebx +4: +#endif + addl $_GLOBAL_OFFSET_TABLE_, %ebx + movl %gs:0, %edx + subl errno@gottpoff(%ebx), %edx + movl %eax, (%edx) + + addl $8, %esp + orl $-1, %eax + popl %ebx + popl %edi + popl %esi + ret + .size sem_timedwait,.-sem_timedwait + + + .globl __new_sem_post + .type __new_sem_post,@function + .align 16 +__new_sem_post: + pushl %esi + pushl %ebx + + movl 12(%esp), %ebx + movl $1, %edx + LOCK + xaddl %edx, (%ebx) + + xorl %esi, %esi + movl $SYS_futex, %eax + movl $FUTEX_WAKE, %ecx + incl %edx + int $0x80 + + testl %eax, %eax + js 1f + + popl %ebx + popl %esi + ret + +1: +#ifdef PIC + call __i686.get_pc_thunk.bx +#else + movl $4f, %ebx +4: +#endif + addl $_GLOBAL_OFFSET_TABLE_, %ebx + movl %gs:0, %edx + subl errno@gottpoff(%ebx), %edx + movl $EINVAL, (%edx) + + orl $-1, %eax + popl %ebx + popl %esi + ret + .size __new_sem_post,.-__new_sem_post + .symver __new_sem_post, sem_post@@GLIBC_2.1 +#if SHLIB_COMPAT(libpthread, GLIBC_2_0, GLIBC_2_1) + .global __old_sem_post +__old_sem_post = __new_sem_post + .symver __old_sem_post, sem_post@GLIBC_2.0 +#endif + + +#ifdef PIC + .section .gnu.linkonce.t.__i686.get_pc_thunk.bx,"ax",@progbits + .globl __i686.get_pc_thunk.bx + .hidden __i686.get_pc_thunk.bx + .type __i686.get_pc_thunk.bx,@function +__i686.get_pc_thunk.bx: + movl (%esp), %ebx; + ret + .size __i686.get_pc_thunk.bx,.-__i686.get_pc_thunk.bx + + + .section .gnu.linkonce.t.__i686.get_pc_thunk.cx,"ax",@progbits + .globl __i686.get_pc_thunk.cx + .hidden __i686.get_pc_thunk.cx + .type __i686.get_pc_thunk.cx,@function +__i686.get_pc_thunk.cx: + movl (%esp), %ecx; + ret + .size __i686.get_pc_thunk.cx,.-__i686.get_pc_thunk.cx +#endif |