1/* $NetBSD: compat_setjmp.S,v 1.2 2011/01/15 07:31:13 matt Exp $ */ 2 3#include "SYS.h" 4#include "assym.h" 5 6#if defined(LIBC_SCCS) 7__RCSID("$NetBSD: compat_setjmp.S,v 1.2 2011/01/15 07:31:13 matt Exp $") 8#endif 9 10/* 11 * C library -- _setjmp, _longjmp 12 * 13 * longjmp(a,v) 14 * will generate a "return(v?v:1)" from the last call to 15 * setjmp(a) 16 * by restoring registers from the stack. 17 * The previous signal state is restored. 18 */ 19 20ENTRY(setjmp) 21 mr %r6,%r3 22 li %r3,SIG_BLOCK 23 li %r4,0 24 _DOSYSCALL(compat_13_sigprocmask13) # assume no error XXX 25 mflr %r11 26 mfcr %r12 27 mr %r10,%r1 28 mr %r9,%r2 29 mr %r8,%r3 30 stmw %r8,4(%r6) 31 li %r3,0 32 blr 33END(setjmp) 34 35ENTRY(longjmp) 36 lmw %r8,4(%r3) 37 mr %r6,%r4 38 mtlr %r11 39 mtcr %r12 40 mr %r2,%r9 41 mr %r1,%r10 42 mr %r4,%r8 43 li %r3,SIG_SETMASK 44 _DOSYSCALL(compat_13_sigprocmask13) # assume no error XXX 45 or. %r3,%r6,%r6 46 bnelr 47 li %r3,1 48 blr 49END(longjmp) 50