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70 lines
1.9 KiB
ArmAsm
70 lines
1.9 KiB
ArmAsm
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/*
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* CDDL HEADER START
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*
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* The contents of this file are subject to the terms of the
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* Common Development and Distribution License (the "License").
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* You may not use this file except in compliance with the License.
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*
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* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
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* or http://www.opensolaris.org/os/licensing.
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* See the License for the specific language governing permissions
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* and limitations under the License.
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*
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* When distributing Covered Code, include this CDDL HEADER in each
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* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
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* If applicable, add the following below this CDDL HEADER, with the
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* fields enclosed by brackets "[]" replaced with your own identifying
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* information: Portions Copyright [yyyy] [name of copyright owner]
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*
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* CDDL HEADER END
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*/
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/*
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* Copyright (c) 1992, 2010, Oracle and/or its affiliates. All rights reserved.
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*/
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#define ENTRY(x) \
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.text; \
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.align 8; \
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.globl x; \
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.type x, @function; \
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x:
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#define SET_SIZE(x) \
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.size x, [.-x]
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/*
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* Setjmp and longjmp implement non-local gotos using state vectors
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* type label_t.
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*/
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#ifdef __i386__
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ENTRY(setjmp) /* save area is passed in eax */
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movl %ebp, 0(%eax) /* save ebp */
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movl %ebx, 4(%eax) /* save ebx */
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movl %esi, 8(%eax) /* save esi */
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movl %edi, 12(%eax) /* save edi */
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movl %esp, 16(%eax) /* save esp */
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movl (%esp), %ecx /* %eip (return address) */
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movl %ecx, 20(%eax) /* save eip */
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subl %eax, %eax /* return 0 */
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ret
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SET_SIZE(setjmp)
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ENTRY(longjmp) /* save area is passed in eax */
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movl 0(%eax), %ebp /* restore ebp */
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movl 4(%eax), %ebx /* restore ebx */
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movl 8(%eax), %esi /* restore esi */
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movl 12(%eax), %edi /* restore edi */
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movl 16(%eax), %esp /* restore esp */
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movl 20(%eax), %ecx /* %eip (return address) */
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addl $4, %esp /* pop ret adr */
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jmp *%ecx /* indirect jump */
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SET_SIZE(longjmp)
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#ifdef __ELF__
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.section .note.GNU-stack,"",%progbits
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#endif
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#endif /* __i386__ */
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