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/* Copyright (C) 2002, 2003, 2004 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Alexandre Oliva <aoliva@redhat.com>
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, see
<http://www.gnu.org/licenses/>. */
#include <sysdep.h>
#include <tls.h>
#include <pt-machine.h>
#ifndef __ASSEMBLER__
# include <linuxthreads/internals.h>
#endif
#if !defined NOT_IN_libc || defined IS_IN_libpthread || defined IS_IN_librt
# undef PSEUDO
# define PSEUDO(name, syscall_name, args) \
.text ; \
ENTRY (name) \
PUSHARGS_##args \
DOARGS_##args \
SINGLE_THREAD_P; \
bne L(pseudo_cancel); \
mov SYS_ify (syscall_name),d0; \
syscall 0 \
POPARGS_##args ; \
cmp -126,d0; \
bls L(pseudo_end); \
jmp SYSCALL_ERROR_LABEL; \
L(pseudo_cancel): \
add -(16+STACK_SPACE (args)),sp; \
SAVE_ARGS_##args \
CENABLE \
mov d0,r0; \
LOAD_ARGS_##args \
mov SYS_ify (syscall_name),d0; \
syscall 0; \
mov d0,(12,sp); \
mov r0,d0; \
CDISABLE \
mov (12,sp),d0; \
add +16+STACK_SPACE (args),sp \
POPARGS_##args ; \
cmp -126,d0; \
bls L(pseudo_end); \
jmp SYSCALL_ERROR_LABEL; \
L(pseudo_end): \
mov d0,a0
/* Reserve up to 2 stack slots for a0 and d1, but fewer than that if
we don't have that many arguments. */
# define STACK_SPACE(n) (((((n) < 3) * (2 - (n))) + 2) * 4)
# define SAVE_ARGS_0
# define SAVE_ARGS_1 mov a0,(20,sp) ;
# define SAVE_ARGS_2 SAVE_ARGS_1 mov d1,(24,sp) ;
# define SAVE_ARGS_3 SAVE_ARGS_2
# define SAVE_ARGS_4 SAVE_ARGS_3
# define SAVE_ARGS_5 SAVE_ARGS_4
# define SAVE_ARGS_6 SAVE_ARGS_5
# define LOAD_ARGS_0
# define LOAD_ARGS_1 mov (20,sp),a0 ;
# define LOAD_ARGS_2 LOAD_ARGS_1 mov (24,sp),d1 ;
# define LOAD_ARGS_3 LOAD_ARGS_2
# define LOAD_ARGS_4 LOAD_ARGS_3
# define LOAD_ARGS_5 LOAD_ARGS_4
# define LOAD_ARGS_6 LOAD_ARGS_5
# ifdef IS_IN_libpthread
# define CENABLE call __pthread_enable_asynccancel,[],0;
# define CDISABLE call __pthread_disable_asynccancel,[],0;
# elif defined IS_IN_librt
# ifdef PIC
# define CENABLE movm [a2],(sp); \
1: mov pc,a2; \
add _GLOBAL_OFFSET_TABLE_-(1b-.),a2; \
call +__librt_enable_asynccancel@PLT,[],0; \
movm (sp),[a2];
# define CENABLE movm [a2],(sp); \
1: mov pc,a2; \
add _GLOBAL_OFFSET_TABLE_-(1b-.),a2; \
call +__librt_disable_asynccancel@PLT,[],0; \
movm (sp),[a2];
# else
# define CENABLE call +__librt_enable_asynccancel,[],0;
# define CDISABLE call +__librt_disable_asynccancel,[],0;
# endif
# else
# define CENABLE call +__libc_enable_asynccancel,[],0;
# define CDISABLE call +__libc_disable_asynccancel,[],0;
# endif
#if !defined NOT_IN_libc
# define __local_multiple_threads __libc_multiple_threads
#elif defined IS_IN_libpthread
# define __local_multiple_threads __pthread_multiple_threads
#else
# define __local_multiple_threads __librt_multiple_threads
#endif
# ifndef __ASSEMBLER__
# if defined FLOATING_STACKS && USE___THREAD && defined PIC
# define SINGLE_THREAD_P \
__builtin_expect (THREAD_GETMEM (THREAD_SELF, \
p_header.data.multiple_threads) == 0, 1)
# else
extern int __local_multiple_threads
# if !defined NOT_IN_libc || defined IS_IN_libpthread
attribute_hidden;
# else
;
# endif
# define SINGLE_THREAD_P __builtin_expect (__local_multiple_threads == 0, 1)
# endif
# else
# if !defined PIC
# define SINGLE_THREAD_P \
mov (+__local_multiple_threads),d0; \
cmp 0,d0
# elif !defined NOT_IN_libc || defined IS_IN_libpthread
# define SINGLE_THREAD_P \
movm [a2],(sp); \
1: mov pc,a2; \
add _GLOBAL_OFFSET_TABLE_-(1b-.),a2; \
mov (+__local_multiple_threads@GOTOFF,a2),d0; \
movm (sp),[a2]; \
cmp 0,d0
# else
# define SINGLE_THREAD_P \
movm [a2],(sp); \
1: mov pc,a2; \
add _GLOBAL_OFFSET_TABLE_-(1b-.),a2; \
mov (+__local_multiple_threads@GOT,a2),a2; \
mov (a2),d0; \
movm (sp),[a2]; \
cmp 0,d0
# endif
# endif
#elif !defined __ASSEMBLER__
/* This code should never be used but we define it anyhow. */
# define SINGLE_THREAD_P (1)
#endif
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