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189 lines
6.3 KiB
C
189 lines
6.3 KiB
C
/* Copyright (C) 2002, 2003, 2004, 2005 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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#ifndef __ASSEMBLER__
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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 || defined IS_IN_librt
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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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PUSHCARGS_##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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POPCARGS_##args; \
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POPSTATE_##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, %ecx;
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# define SAVE_OLDTYPE_1 SAVE_OLDTYPE_0
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# define SAVE_OLDTYPE_2 pushl %eax; cfi_adjust_cfa_offset (4);
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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 PUSHCARGS_0 /* No arguments to push. */
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# define DOCARGS_0 /* No arguments to frob. */
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# define POPCARGS_0 /* No arguments to pop. */
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# define _PUSHCARGS_0 /* No arguments to push. */
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# define _POPCARGS_0 /* No arguments to pop. */
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# define PUSHCARGS_1 movl %ebx, %edx; cfi_register (ebx, edx); PUSHCARGS_0
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# define DOCARGS_1 _DOARGS_1 (4)
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# define POPCARGS_1 POPCARGS_0; movl %edx, %ebx; cfi_restore (ebx);
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# define _PUSHCARGS_1 pushl %ebx; cfi_adjust_cfa_offset (4); \
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cfi_rel_offset (ebx, 0); _PUSHCARGS_0
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# define _POPCARGS_1 _POPCARGS_0; popl %ebx; \
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cfi_adjust_cfa_offset (-4); cfi_restore (ebx);
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# define PUSHCARGS_2 PUSHCARGS_1
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# define DOCARGS_2 _DOARGS_2 (12)
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# define POPCARGS_2 POPCARGS_1
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# define _PUSHCARGS_2 _PUSHCARGS_1
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# define _POPCARGS_2 _POPCARGS_1
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# define PUSHCARGS_3 _PUSHCARGS_2
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# define DOCARGS_3 _DOARGS_3 (20)
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# define POPCARGS_3 _POPCARGS_3
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# define _PUSHCARGS_3 _PUSHCARGS_2
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# define _POPCARGS_3 _POPCARGS_2
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# define PUSHCARGS_4 _PUSHCARGS_4
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# define DOCARGS_4 _DOARGS_4 (28)
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# define POPCARGS_4 _POPCARGS_4
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# define _PUSHCARGS_4 pushl %esi; cfi_adjust_cfa_offset (4); \
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cfi_rel_offset (esi, 0); _PUSHCARGS_3
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# define _POPCARGS_4 _POPCARGS_3; popl %esi; \
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cfi_adjust_cfa_offset (-4); cfi_restore (esi);
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# define PUSHCARGS_5 _PUSHCARGS_5
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# define DOCARGS_5 _DOARGS_5 (36)
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# define POPCARGS_5 _POPCARGS_5
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# define _PUSHCARGS_5 pushl %edi; cfi_adjust_cfa_offset (4); \
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cfi_rel_offset (edi, 0); _PUSHCARGS_4
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# define _POPCARGS_5 _POPCARGS_4; popl %edi; \
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cfi_adjust_cfa_offset (-4); cfi_restore (edi);
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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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# elif defined IS_IN_librt
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# ifdef PIC
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# define CENABLE pushl %ebx; \
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call __i686.get_pc_thunk.bx; \
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addl $_GLOBAL_OFFSET_TABLE_, %ebx; \
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call __librt_enable_asynccancel@PLT; \
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popl %ebx;
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# define CDISABLE pushl %ebx; \
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call __i686.get_pc_thunk.bx; \
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addl $_GLOBAL_OFFSET_TABLE_, %ebx; \
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call __librt_disable_asynccancel@PLT; \
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popl %ebx;
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# else
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# define CENABLE call __librt_enable_asynccancel;
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# define CDISABLE call __librt_disable_asynccancel
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# endif
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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 POPSTATE_0 \
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pushl %eax; cfi_adjust_cfa_offset (4); movl %ecx, %eax; \
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CDISABLE; popl %eax; cfi_adjust_cfa_offset (-4);
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# define POPSTATE_1 POPSTATE_0
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# define POPSTATE_2 xchgl (%esp), %eax; CDISABLE; popl %eax; \
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cfi_adjust_cfa_offset (-4);
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# define POPSTATE_3 POPSTATE_2
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# define POPSTATE_4 POPSTATE_3
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# define POPSTATE_5 POPSTATE_4
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#if !defined NOT_IN_libc
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# define __local_multiple_threads __libc_multiple_threads
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#elif defined IS_IN_libpthread
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# define __local_multiple_threads __pthread_multiple_threads
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#else
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# define __local_multiple_threads __librt_multiple_threads
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#endif
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# ifndef __ASSEMBLER__
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# if defined FLOATING_STACKS && USE___THREAD && defined PIC
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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
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# if !defined NOT_IN_libc || defined IS_IN_libpthread
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attribute_hidden;
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# else
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;
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# endif
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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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# elif defined FLOATING_STACKS && USE___THREAD
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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 NOT_IN_libc || defined IS_IN_libpthread
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# define __SINGLE_THREAD_CMP cmpl $0, __local_multiple_threads@GOTOFF(%ecx)
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# else
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# define __SINGLE_THREAD_CMP \
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movl __local_multiple_threads@GOT(%ecx), %ecx;\
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cmpl $0, (%ecx)
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# endif
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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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__SINGLE_THREAD_CMP
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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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__SINGLE_THREAD_CMP
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# endif
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# endif
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# endif
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#elif !defined __ASSEMBLER__
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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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