2002-12-18 01:38:17 +00:00
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/* Copyright (C) 2002 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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Contributed by Jakub Jelinek <jakub@redhat.com>, 2002.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, write to the Free
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Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
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02111-1307 USA. */
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#include <sysdep.h>
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#include <tls.h>
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#include <pt-machine.h>
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2002-12-31 20:46:11 +00:00
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#ifndef __ASSEMBLER__
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2002-12-18 01:38:17 +00:00
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# include <linuxthreads/internals.h>
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#endif
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#if !defined NOT_IN_libc || defined IS_IN_libpthread
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# undef PSEUDO
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# define PSEUDO(name, syscall_name, args) \
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.text; \
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ENTRY (name) \
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SINGLE_THREAD_P; \
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jne L(pseudo_cancel); \
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DO_CALL (syscall_name, args); \
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cmpl $-4095, %eax; \
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jae SYSCALL_ERROR_LABEL; \
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ret; \
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L(pseudo_cancel): \
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CENABLE \
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SAVE_OLDTYPE_##args \
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PUSHARGS_##args \
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DOCARGS_##args \
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movl $SYS_ify (syscall_name), %eax; \
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int $0x80 \
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POPARGS_##args; \
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POPCARGS_##args \
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cmpl $-4095, %eax; \
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jae SYSCALL_ERROR_LABEL; \
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L(pseudo_end):
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# define SAVE_OLDTYPE_0 movl %eax, %edx;
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# define SAVE_OLDTYPE_1 SAVE_OLDTYPE_0
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# define SAVE_OLDTYPE_2 pushl %eax;
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# define SAVE_OLDTYPE_3 SAVE_OLDTYPE_2
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# define SAVE_OLDTYPE_4 SAVE_OLDTYPE_2
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# define SAVE_OLDTYPE_5 SAVE_OLDTYPE_2
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# define DOCARGS_0 DOARGS_0
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# define DOCARGS_1 DOARGS_1
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# define DOCARGS_2 _DOARGS_2 (12)
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# define DOCARGS_3 _DOARGS_3 (20)
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# define DOCARGS_4 _DOARGS_4 (28)
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# define DOCARGS_5 _DOARGS_5 (36)
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# ifdef IS_IN_libpthread
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# define CENABLE call __pthread_enable_asynccancel;
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# define CDISABLE call __pthread_disable_asynccancel
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# else
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# define CENABLE call __libc_enable_asynccancel;
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# define CDISABLE call __libc_disable_asynccancel
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# endif
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# define POPCARGS_0 pushl %eax; movl %ecx, %eax; CDISABLE; popl %eax;
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# define POPCARGS_1 POPCARGS_0
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# define POPCARGS_2 xchgl (%esp), %eax; CDISABLE; popl %eax;
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# define POPCARGS_3 POPCARGS_2
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# define POPCARGS_4 POPCARGS_2
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# define POPCARGS_5 POPCARGS_2
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#if !defined NOT_IN_libc
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# define __local_multiple_threads __libc_multiple_threads
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#else
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# define __local_multiple_threads __pthread_multiple_threads
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#endif
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2002-12-31 20:46:11 +00:00
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# ifndef __ASSEMBLER__
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2002-12-28 22:19:04 +00:00
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# if defined FLOATING_STACKS && USE___THREAD && defined PIC
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2002-12-18 01:38:17 +00:00
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# define SINGLE_THREAD_P \
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__builtin_expect (THREAD_GETMEM (THREAD_SELF, \
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p_header.data.multiple_threads) == 0, 1)
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# else
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extern int __local_multiple_threads attribute_hidden;
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# define SINGLE_THREAD_P __builtin_expect (__local_multiple_threads == 0, 1)
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# endif
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# else
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# if !defined PIC
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# define SINGLE_THREAD_P cmpl $0, __local_multiple_threads
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2002-12-28 22:19:04 +00:00
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# elif defined FLOATING_STACKS && USE___THREAD
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2002-12-18 01:38:17 +00:00
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# define SINGLE_THREAD_P cmpl $0, %gs:MULTIPLE_THREADS_OFFSET
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# else
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# if !defined HAVE_HIDDEN || !USE___THREAD
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# define SINGLE_THREAD_P \
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SETUP_PIC_REG (cx); \
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addl $_GLOBAL_OFFSET_TABLE_, %ecx; \
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cmpl $0, __local_multiple_threads@GOTOFF(%ecx)
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# else
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# define SINGLE_THREAD_P \
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call __i686.get_pc_thunk.cx; \
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addl $_GLOBAL_OFFSET_TABLE_, %ecx; \
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cmpl $0, __local_multiple_threads@GOTOFF(%ecx)
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# endif
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# endif
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# endif
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2002-12-31 20:46:11 +00:00
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#elif !defined __ASSEMBLER__
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2002-12-18 01:38:17 +00:00
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/* This code should never be used but we define it anyhow. */
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# define SINGLE_THREAD_P (1)
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#endif
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