1994-10-26 09:39:02 +03:00
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/* $NetBSD: setjmp.S,v 1.2 1994/10/26 06:39:49 cgd Exp $ */
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1993-10-07 03:17:24 +03:00
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/*
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* Copyright (c) 1992 Helsinki University of Technology
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* All Rights Reserved.
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*
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* Permission to use, copy, modify and distribute this software and its
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* documentation is hereby granted, provided that both the copyright
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* notice and this permission notice appear in all copies of the
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* software, derivative works or modified versions, and any portions
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* thereof, and that both notices appear in supporting documentation.
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*
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* HELSINKI UNIVERSITY OF TECHNOLOGY ALLOWS FREE USE OF THIS SOFTWARE IN
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* ITS "AS IS" CONDITION. HELSINKI UNIVERSITY OF TECHNOLOGY DISCLAIMS ANY
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* LIABILITY OF ANY KIND FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE
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* USE OF THIS SOFTWARE.
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*/
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/*
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* HISTORY
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* 29-Apr-92 Johannes Helander (jvh) at Helsinki University of Technology
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* Created.
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*/
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#include <machine/asm.h>
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#include <machine/jmpbuf.h>
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ENTRY(setjmp)
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movqd 0, tos
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bsr EX(sigblock)
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adjspb -4
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movd 4(sp), r2 /* jmp_buf */
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movd 0(sp), JMP_BUF_PC(r2) /* pc of caller */
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movd r0, JMP_BUF_SIGMASK(r2) /* save mask */
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sprd sp, JMP_BUF_SP(r2)
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sprd fp, JMP_BUF_FP(r2)
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sprd sb, JMP_BUF_SB(r2)
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movd r3, JMP_BUF_R3(r2) /* save registers r3-r7 */
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movd r4, JMP_BUF_R4(r2)
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movd r5, JMP_BUF_R5(r2)
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movd r6, JMP_BUF_R6(r2)
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movd r7, JMP_BUF_R7(r2)
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movqd 0, r0
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ret 0
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ENTRY(longjmp)
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movd 4(sp),r2 /* jmp_buf */
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movd JMP_BUF_SIGMASK(r2), tos /* restore mask */
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bsr EX(sigsetmask)
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adjspb -4
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movd 4(sp), r2 /* jmp_buf */
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movd 8(sp), r0 /* value */
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lprd sp, JMP_BUF_SP(r2)
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lprd fp, JMP_BUF_FP(r2)
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lprd sb, JMP_BUF_SB(r2)
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movd JMP_BUF_R3(r2), r3 /* load registers r3-r7 */
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movd JMP_BUF_R4(r2), r4
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movd JMP_BUF_R5(r2), r5
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movd JMP_BUF_R6(r2), r6
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movd JMP_BUF_R7(r2), r7
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movd JMP_BUF_PC(r2), 0(sp) /* patch return pc */
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cmpqd 0, r0
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bne nonzero
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movqd 1, r0
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nonzero:
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ret 0
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