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cbd6a07c56
* sysdeps/unix/sysv/linux/am33/linuxthreads/sysdep-cancel.h: ... here, where it should have been added in the first place.
160 lines
4.7 KiB
C
160 lines
4.7 KiB
C
/* Copyright (C) 2002, 2003, 2004 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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Contributed by Alexandre Oliva <aoliva@redhat.com>
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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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PUSHARGS_##args \
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DOARGS_##args \
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SINGLE_THREAD_P; \
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bne L(pseudo_cancel); \
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mov SYS_ify (syscall_name),d0; \
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syscall 0 \
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POPARGS_##args ; \
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cmp -126,d0; \
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bls L(pseudo_end); \
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jmp SYSCALL_ERROR_LABEL; \
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L(pseudo_cancel): \
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add -(16+STACK_SPACE (args)),sp; \
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SAVE_ARGS_##args \
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CENABLE \
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mov d0,r0; \
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LOAD_ARGS_##args \
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mov SYS_ify (syscall_name),d0; \
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syscall 0; \
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mov d0,(12,sp); \
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mov r0,d0; \
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CDISABLE \
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mov (12,sp),d0; \
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add +16+STACK_SPACE (args),sp \
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POPARGS_##args ; \
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cmp -126,d0; \
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bls L(pseudo_end); \
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jmp SYSCALL_ERROR_LABEL; \
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L(pseudo_end): \
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mov d0,a0
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/* Reserve up to 2 stack slots for a0 and d1, but fewer than that if
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we don't have that many arguments. */
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# define STACK_SPACE(n) (((((n) < 3) * (2 - (n))) + 2) * 4)
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# define SAVE_ARGS_0
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# define SAVE_ARGS_1 mov a0,(20,sp) ;
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# define SAVE_ARGS_2 SAVE_ARGS_1 mov d1,(24,sp) ;
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# define SAVE_ARGS_3 SAVE_ARGS_2
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# define SAVE_ARGS_4 SAVE_ARGS_3
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# define SAVE_ARGS_5 SAVE_ARGS_4
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# define SAVE_ARGS_6 SAVE_ARGS_5
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# define LOAD_ARGS_0
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# define LOAD_ARGS_1 mov (20,sp),a0 ;
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# define LOAD_ARGS_2 LOAD_ARGS_1 mov (24,sp),d1 ;
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# define LOAD_ARGS_3 LOAD_ARGS_2
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# define LOAD_ARGS_4 LOAD_ARGS_3
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# define LOAD_ARGS_5 LOAD_ARGS_4
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# define LOAD_ARGS_6 LOAD_ARGS_5
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# ifdef IS_IN_libpthread
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# define CENABLE call __pthread_enable_asynccancel,[],0;
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# define CDISABLE call __pthread_disable_asynccancel,[],0;
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# elif defined IS_IN_librt
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# ifdef PIC
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# define CENABLE movm [a2],(sp); \
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1: mov pc,a2; \
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add _GLOBAL_OFFSET_TABLE_-(1b-.),a2; \
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call +__librt_enable_asynccancel@PLT,[],0; \
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movm (sp),[a2];
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# define CENABLE movm [a2],(sp); \
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1: mov pc,a2; \
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add _GLOBAL_OFFSET_TABLE_-(1b-.),a2; \
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call +__librt_disable_asynccancel@PLT,[],0; \
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movm (sp),[a2];
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# else
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# define CENABLE call +__librt_enable_asynccancel,[],0;
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# define CDISABLE call +__librt_disable_asynccancel,[],0;
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# endif
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# else
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# define CENABLE call +__libc_enable_asynccancel,[],0;
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# define CDISABLE call +__libc_disable_asynccancel,[],0;
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# endif
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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 \
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mov (+__local_multiple_threads),d0; \
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cmp 0,d0
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# elif !defined NOT_IN_libc || defined IS_IN_libpthread
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# define SINGLE_THREAD_P \
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movm [a2],(sp); \
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1: mov pc,a2; \
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add _GLOBAL_OFFSET_TABLE_-(1b-.),a2; \
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mov (+__local_multiple_threads@GOTOFF,a2),d0; \
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movm (sp),[a2]; \
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cmp 0,d0
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# else
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# define SINGLE_THREAD_P \
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movm [a2],(sp); \
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1: mov pc,a2; \
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add _GLOBAL_OFFSET_TABLE_-(1b-.),a2; \
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mov (+__local_multiple_threads@GOT,a2),a2; \
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mov (a2),d0; \
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movm (sp),[a2]; \
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cmp 0,d0
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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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