62513f7bed
* config/sparc/target.h (cpu_relax): Read from CC register. * config/sparc/sjlj.S (GTM_longjmp): Restore %fp atomically. From-SVN: r184202
98 lines
2.7 KiB
ArmAsm
98 lines
2.7 KiB
ArmAsm
/* Copyright (C) 2012 Free Software Foundation, Inc.
|
|
|
|
This file is part of the GNU Transactional Memory Library (libitm).
|
|
|
|
Libitm is free software; you can redistribute it and/or modify it
|
|
under the terms of the GNU General Public License as published by
|
|
the Free Software Foundation; either version 3 of the License, or
|
|
(at your option) any later version.
|
|
|
|
Libitm 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 General Public License for
|
|
more details.
|
|
|
|
Under Section 7 of GPL version 3, you are granted additional
|
|
permissions described in the GCC Runtime Library Exception, version
|
|
3.1, as published by the Free Software Foundation.
|
|
|
|
You should have received a copy of the GNU General Public License and
|
|
a copy of the GCC Runtime Library Exception along with this program;
|
|
see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
|
|
<http://www.gnu.org/licenses/>. */
|
|
|
|
#include "asmcfi.h"
|
|
|
|
#ifdef __arch64__
|
|
# define WORD_SIZE 8
|
|
# define MIN_FRAME_SIZE 176
|
|
# define STACK_BIAS 2047
|
|
# define load ldx
|
|
# define store stx
|
|
#else
|
|
# define WORD_SIZE 4
|
|
# define MIN_FRAME_SIZE 96
|
|
# define STACK_BIAS 0
|
|
# define load ld
|
|
# define store st
|
|
#endif
|
|
|
|
/* Fields of the JmpBuf structure. */
|
|
#define JB_CFA 0
|
|
#define JB_PC 1
|
|
#define OFFSET(FIELD) ((FIELD) * WORD_SIZE)
|
|
|
|
/* The frame size must be a multiple of the double-word size. */
|
|
#define FRAME_SIZE (MIN_FRAME_SIZE + 2 * WORD_SIZE)
|
|
#define JB_OFFSET (STACK_BIAS + MIN_FRAME_SIZE)
|
|
|
|
.text
|
|
.align 4
|
|
.globl _ITM_beginTransaction
|
|
.type _ITM_beginTransaction, #function
|
|
.proc 016
|
|
_ITM_beginTransaction:
|
|
cfi_startproc
|
|
add %sp, STACK_BIAS, %g1
|
|
sub %sp, FRAME_SIZE, %sp
|
|
cfi_def_cfa_offset(STACK_BIAS + FRAME_SIZE)
|
|
store %g1, [%sp + JB_OFFSET + OFFSET (JB_CFA)]
|
|
store %o7, [%sp + JB_OFFSET + OFFSET (JB_PC)]
|
|
/* ??? This triggers an internal error in GDB. */
|
|
cfi_offset(%o7, -WORD_SIZE)
|
|
call GTM_begin_transaction
|
|
add %sp, JB_OFFSET, %o1
|
|
load [%sp + JB_OFFSET + OFFSET (JB_PC)], %o7
|
|
jmp %o7+8
|
|
add %sp, FRAME_SIZE, %sp
|
|
cfi_def_cfa_offset(STACK_BIAS)
|
|
cfi_endproc
|
|
.size _ITM_beginTransaction, . - _ITM_beginTransaction
|
|
|
|
.align 4
|
|
.globl GTM_longjmp
|
|
#ifdef HAVE_ATTRIBUTE_VISIBILITY
|
|
.hidden GTM_longjmp
|
|
#endif
|
|
.type GTM_longjmp, #function
|
|
.proc 016
|
|
GTM_longjmp:
|
|
cfi_startproc
|
|
flushw
|
|
#if STACK_BIAS
|
|
load [%o1 + OFFSET (JB_CFA)], %g1
|
|
sub %g1, STACK_BIAS, %fp
|
|
#else
|
|
load [%o1 + OFFSET (JB_CFA)], %fp
|
|
#endif
|
|
cfi_def_cfa(%fp, STACK_BIAS)
|
|
load [%o1 + OFFSET (JB_PC)], %o7
|
|
jmp %o7+8
|
|
restore %g0, %o0, %o0
|
|
cfi_endproc
|
|
.size GTM_longjmp, . - GTM_longjmp
|
|
|
|
#ifdef __linux__
|
|
.section .note.GNU-stack, "", @progbits
|
|
#endif
|