1 /* $NetBSD: compat_setjmp.S,v 1.3 2006/01/05 19:21:37 uwe Exp $ */
4 * Copyright (c) 1990 The Regents of the University of California.
7 * This code is derived from software contributed to Berkeley by
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34 * from: @(#)setjmp.s 5.1 (Berkeley) 4/23/90
37 #include <machine/asm.h>
38 #include <machine/setjmp.h>
40 #if defined(LIBC_SCCS)
41 RCSID("$NetBSD: compat_setjmp.S,v 1.3 2006/01/05 19:21:37 uwe Exp $")
45 * C library -- setjmp, longjmp
48 * will generate a "return(v)" from the last call to
50 * by restoring registers from the stack.
51 * The previous signal state is restored.
55 PIC_PROLOGUE(.L_got_1)
60 1: CALL r0 /* int mask = sigblock(0); */
67 /* identical to _setjmp except that mask is present */
68 add #((_JB_SIGMASK + 1) * 4), r4
69 mov.l r0, @-r4 /* current mask returned by sigblock */
71 mov.l r0, @-r4 /* has signal mask */
85 .L_got_1: PIC_GOT_DATUM
86 .L_sigblock: CALL_DATUM(_C_LABEL(sigblock), 1b)
87 SET_ENTRY_SIZE(setjmp)
91 /* we won't return here, so we don't need to save pr and r12 */
92 PIC_PROLOGUE_NOSAVE(.L_got_2)
96 mov.l .L_sigsetmask, r0
97 1: CALL r0 /* sigsetmask(saved mask) */
98 mov.l @(_JB_SIGMASK * 4, r4), r4
103 /* identical to _longjmp */
115 tst r0, r0 /* make sure return value is non-zero */
123 .L_got_2: PIC_GOT_DATUM
124 .L_sigsetmask: CALL_DATUM(_C_LABEL(sigsetmask), 1b)
125 SET_ENTRY_SIZE(longjmp)