98 lines
2.7 KiB
ArmAsm
98 lines
2.7 KiB
ArmAsm
/* Copyright (C) 2012-2013 Free Software Foundation, Inc.
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This file is part of the GNU Transactional Memory Library (libitm).
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Libitm is free software; you can redistribute it and/or modify it
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under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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Libitm is distributed in the hope that it will be useful, but WITHOUT ANY
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WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
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FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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more details.
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Under Section 7 of GPL version 3, you are granted additional
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permissions described in the GCC Runtime Library Exception, version
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3.1, as published by the Free Software Foundation.
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You should have received a copy of the GNU General Public License and
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a copy of the GCC Runtime Library Exception along with this program;
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see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
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<http://www.gnu.org/licenses/>. */
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#include "asmcfi.h"
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#ifdef __arch64__
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# define WORD_SIZE 8
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# define MIN_FRAME_SIZE 176
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# define STACK_BIAS 2047
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# define load ldx
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# define store stx
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#else
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# define WORD_SIZE 4
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# define MIN_FRAME_SIZE 96
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# define STACK_BIAS 0
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# define load ld
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# define store st
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#endif
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/* Fields of the JmpBuf structure. */
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#define JB_CFA 0
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#define JB_PC 1
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#define OFFSET(FIELD) ((FIELD) * WORD_SIZE)
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/* The frame size must be a multiple of the double-word size. */
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#define FRAME_SIZE (MIN_FRAME_SIZE + 2 * WORD_SIZE)
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#define JB_OFFSET (STACK_BIAS + MIN_FRAME_SIZE)
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.text
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.align 4
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.globl _ITM_beginTransaction
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.type _ITM_beginTransaction, #function
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.proc 016
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_ITM_beginTransaction:
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cfi_startproc
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add %sp, STACK_BIAS, %g1
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sub %sp, FRAME_SIZE, %sp
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cfi_def_cfa_offset(STACK_BIAS + FRAME_SIZE)
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store %g1, [%sp + JB_OFFSET + OFFSET (JB_CFA)]
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store %o7, [%sp + JB_OFFSET + OFFSET (JB_PC)]
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/* ??? This triggers an internal error in GDB. */
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cfi_offset(%o7, -WORD_SIZE)
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call GTM_begin_transaction
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add %sp, JB_OFFSET, %o1
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load [%sp + JB_OFFSET + OFFSET (JB_PC)], %o7
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jmp %o7+8
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add %sp, FRAME_SIZE, %sp
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cfi_def_cfa_offset(STACK_BIAS)
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cfi_endproc
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.size _ITM_beginTransaction, . - _ITM_beginTransaction
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.align 4
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.globl GTM_longjmp
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#ifdef HAVE_ATTRIBUTE_VISIBILITY
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.hidden GTM_longjmp
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#endif
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.type GTM_longjmp, #function
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.proc 016
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GTM_longjmp:
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cfi_startproc
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flushw
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#if STACK_BIAS
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load [%o1 + OFFSET (JB_CFA)], %g1
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sub %g1, STACK_BIAS, %fp
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#else
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load [%o1 + OFFSET (JB_CFA)], %fp
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#endif
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cfi_def_cfa(%fp, STACK_BIAS)
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load [%o1 + OFFSET (JB_PC)], %o7
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jmp %o7+8
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restore %g0, %o0, %o0
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cfi_endproc
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.size GTM_longjmp, . - GTM_longjmp
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#ifdef __linux__
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.section .note.GNU-stack, "", @progbits
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#endif
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