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glibc/nptl/sysdeps/unix/sysv/linux/sh/sysdep-cancel.h

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/* Copyright (C) 2003, 2004 Free Software Foundation, Inc.
This file is part of the GNU C Library.
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 <tls.h>
#ifndef __ASSEMBLER__
# include <nptl/pthreadP.h>
#endif
#if !defined NOT_IN_libc || defined IS_IN_libpthread || defined IS_IN_librt
# define _IMM12 #-12
# define _IMM16 #-16
# define _IMP16 #16
# undef PSEUDO
# define PSEUDO(name, syscall_name, args) \
.text; \
ENTRY (name); \
.Lpseudo_start: \
SINGLE_THREAD_P; \
bf .Lpseudo_cancel; \
.type __##syscall_name##_nocancel,@function; \
.globl __##syscall_name##_nocancel; \
__##syscall_name##_nocancel: \
DO_CALL (syscall_name, args); \
mov r0,r1; \
mov _IMM12,r2; \
shad r2,r1; \
not r1,r1; \
tst r1,r1; \
bt .Lsyscall_error; \
bra .Lpseudo_end; \
nop; \
.size __##syscall_name##_nocancel,.-__##syscall_name##_nocancel; \
.Lpseudo_cancel: \
sts.l pr,@-r15; \
.LCFI0: \
add _IMM16,r15; \
SAVE_ARGS_##args; \
.LCFI1: \
CENABLE; \
LOAD_ARGS_##args; \
add _IMP16,r15; \
.LCFI2: \
lds.l @r15+,pr; \
.LCFI3: \
DO_CALL(syscall_name, args); \
SYSCALL_INST_PAD; \
sts.l pr,@-r15; \
.LCFI4: \
mov.l r0,@-r15; \
.LCFI5: \
CDISABLE; \
mov.l @r15+,r0; \
.LCFI6: \
lds.l @r15+,pr; \
.LCFI7: \
mov r0,r1; \
mov _IMM12,r2; \
shad r2,r1; \
not r1,r1; \
tst r1,r1; \
bf .Lpseudo_end; \
.Lsyscall_error: \
SYSCALL_ERROR_HANDLER; \
.Lpseudo_end: \
/* Create unwinding information for the syscall wrapper. */ \
.section .eh_frame,"a",@progbits; \
.Lframe1: \
.ualong .LECIE1-.LSCIE1; \
.LSCIE1: \
.ualong 0x0; \
.byte 0x1; \
AUGMENTATION_STRING; \
.uleb128 0x1; \
.sleb128 -4; \
.byte 0x11; \
AUGMENTATION_PARAM; \
.byte 0xc; \
.uleb128 0xf; \
.uleb128 0x0; \
.align 2; \
.LECIE1: \
.LSFDE1: \
.ualong .LEFDE1-.LASFDE1; \
.LASFDE1: \
.ualong .LASFDE1-.Lframe1; \
START_SYMBOL_REF; \
.ualong .Lpseudo_end - .Lpseudo_start; \
AUGMENTATION_PARAM_FDE; \
.byte 0x4; \
.ualong .LCFI0-.Lpseudo_start; \
.byte 0xe; \
.uleb128 0x4; \
.byte 0x91; \
.uleb128 0x1; \
.byte 0x4; \
.ualong .LCFI1-.LCFI0; \
.byte 0xe; \
.uleb128 0x14; \
FRAME_REG_##args; \
.byte 0x4; \
.ualong .LCFI2-.LCFI1; \
.byte 0xe; \
.uleb128 0x4; \
.byte 0x4; \
.ualong .LCFI3-.LCFI2; \
.byte 0xe; \
.uleb128 0x0; \
.byte 0xd1; \
.byte 0x4; \
.ualong .LCFI4-.LCFI3; \
.byte 0xe; \
.uleb128 0x4; \
.byte 0x91; \
.uleb128 0x1; \
.byte 0x4; \
.ualong .LCFI5-.LCFI4; \
.byte 0xe; \
.uleb128 0x8; \
.byte 0x80; \
.uleb128 0x2; \
.byte 0x4; \
.ualong .LCFI6-.LCFI5; \
.byte 0xe; \
.uleb128 0x4; \
.byte 0xc0; \
.byte 0x4; \
.ualong .LCFI7-.LCFI6; \
.byte 0xe; \
.uleb128 0x0; \
.byte 0xd1; \
.align 2; \
.LEFDE1: \
.previous
# ifdef SHARED
# define AUGMENTATION_STRING .string "zR"
# define AUGMENTATION_PARAM .uleb128 1; .byte 0x1b
# define AUGMENTATION_PARAM_FDE .uleb128 0
# define START_SYMBOL_REF .long .Lpseudo_start-.
# else
# define AUGMENTATION_STRING .ascii "\0"
# define AUGMENTATION_PARAM
# define AUGMENTATION_PARAM_FDE
# define START_SYMBOL_REF .long .Lpseudo_start
# endif
# define FRAME_REG_0 /* Nothing. */
# define FRAME_REG_1 FRAME_REG_0; .byte 0x84; .uleb128 5
# define FRAME_REG_2 FRAME_REG_1; .byte 0x85; .uleb128 4
# define FRAME_REG_3 FRAME_REG_2; .byte 0x86; .uleb128 3
# define FRAME_REG_4 FRAME_REG_3; .byte 0x87; .uleb128 2
# define FRAME_REG_5 FRAME_REG_4
# define FRAME_REG_6 FRAME_REG_5
# undef PSEUDO_END
# define PSEUDO_END(sym) \
END (sym)
# define SAVE_ARGS_0 /* Nothing. */
# define SAVE_ARGS_1 SAVE_ARGS_0; mov.l r4,@(0,r15)
# define SAVE_ARGS_2 SAVE_ARGS_1; mov.l r5,@(4,r15)
# define SAVE_ARGS_3 SAVE_ARGS_2; mov.l r6,@(8,r15)
# define SAVE_ARGS_4 SAVE_ARGS_3; mov.l r7,@(12,r15)
# define SAVE_ARGS_5 SAVE_ARGS_4
# define SAVE_ARGS_6 SAVE_ARGS_5
# define LOAD_ARGS_0 /* Nothing. */
# define LOAD_ARGS_1 LOAD_ARGS_0; mov.l @(0,r15),r4
# define LOAD_ARGS_2 LOAD_ARGS_1; mov.l @(4,r15),r5
# define LOAD_ARGS_3 LOAD_ARGS_2; mov.l @(8,r15),r6
# define LOAD_ARGS_4 LOAD_ARGS_3; mov.l @(12,r15),r7
# define LOAD_ARGS_5 LOAD_ARGS_4
# define LOAD_ARGS_6 LOAD_ARGS_5
# ifdef IS_IN_libpthread
# define __local_enable_asynccancel __pthread_enable_asynccancel
# define __local_disable_asynccancel __pthread_disable_asynccancel
# elif !defined NOT_IN_libc
# define __local_enable_asynccancel __libc_enable_asynccancel
# define __local_disable_asynccancel __libc_disable_asynccancel
# elif defined IS_IN_librt
# define __local_enable_asynccancel __librt_enable_asynccancel
# define __local_disable_asynccancel __librt_disable_asynccancel
# else
# error Unsupported library
# endif
# define CENABLE \
mov.l 1f,r0; \
bsrf r0; \
nop; \
0: bra 2f; \
mov r0,r2; \
.align 2; \
1: .long __local_enable_asynccancel - 0b; \
2:
# define CDISABLE \
mov.l 1f,r0; \
bsrf r0; \
mov r2,r4; \
0: bra 2f; \
nop; \
.align 2; \
1: .long __local_disable_asynccancel - 0b; \
2:
# ifndef __ASSEMBLER__
# define SINGLE_THREAD_P \
__builtin_expect (THREAD_GETMEM (THREAD_SELF, \
header.multiple_threads) == 0, 1)
# else
# define SINGLE_THREAD_P \
stc gbr,r0; \
mov.w 0f,r1; \
sub r1,r0; \
mov.l @(MULTIPLE_THREADS_OFFSET,r0),r0; \
bra 1f; \
tst r0,r0; \
0: .word TLS_PRE_TCB_SIZE; \
1:
# endif
#elif !defined __ASSEMBLER__
# define SINGLE_THREAD_P (1)
# define NO_CANCELLATION 1
#endif
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