50 lines
875 B
ArmAsm
50 lines
875 B
ArmAsm
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/* $NetBSD: compat_setjmp.S,v 1.2 2011/01/15 07:31:13 matt Exp $ */
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#include "SYS.h"
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#include "assym.h"
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#if defined(LIBC_SCCS)
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__RCSID("$NetBSD: compat_setjmp.S,v 1.2 2011/01/15 07:31:13 matt Exp $")
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#endif
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/*
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* C library -- _setjmp, _longjmp
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*
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* longjmp(a,v)
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* will generate a "return(v?v:1)" from the last call to
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* setjmp(a)
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* by restoring registers from the stack.
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* The previous signal state is restored.
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*/
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ENTRY(setjmp)
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mr %r6,%r3
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li %r3,SIG_BLOCK
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li %r4,0
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_DOSYSCALL(compat_13_sigprocmask13) # assume no error XXX
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mflr %r11
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mfcr %r12
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mr %r10,%r1
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mr %r9,%r2
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mr %r8,%r3
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stmw %r8,4(%r6)
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li %r3,0
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blr
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END(setjmp)
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ENTRY(longjmp)
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lmw %r8,4(%r3)
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mr %r6,%r4
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mtlr %r11
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mtcr %r12
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mr %r2,%r9
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mr %r1,%r10
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mr %r4,%r8
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li %r3,SIG_SETMASK
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_DOSYSCALL(compat_13_sigprocmask13) # assume no error XXX
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or. %r3,%r6,%r6
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bnelr
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li %r3,1
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blr
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END(longjmp)
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