compat_setjmp.S revision 1.1
1 /* $NetBSD: compat_setjmp.S,v 1.1 2006/02/18 00:45:22 matt Exp $ */ 2 3 #include <sys/syscall.h> 4 5 #include <machine/asm.h> 6 7 #if defined(LIBC_SCCS) 8 .text 9 .asciz "$NetBSD: compat_setjmp.S,v 1.1 2006/02/18 00:45:22 matt Exp $" 10 #endif 11 12 /* 13 * C library -- _setjmp, _longjmp 14 * 15 * longjmp(a,v) 16 * will generate a "return(v?v:1)" from the last call to 17 * setjmp(a) 18 * by restoring registers from the stack. 19 * The previous signal state is restored. 20 */ 21 22 ENTRY(setjmp) 23 mr %r6,%r3 24 li %r3,1 # SIG_BLOCK 25 li %r4,0 26 li %r0,SYS_compat_13_sigprocmask13 27 sc # assume no error XXX 28 mflr %r11 29 mfcr %r12 30 mr %r10,%r1 31 mr %r9,%r2 32 mr %r8,%r3 33 stmw %r8,4(%r6) 34 li %r3,0 35 blr 36 37 ENTRY(longjmp) 38 lmw %r8,4(%r3) 39 mr %r6,%r4 40 mtlr %r11 41 mtcr %r12 42 mr %r2,%r9 43 mr %r1,%r10 44 mr %r4,%r8 45 li %r3,3 # SIG_SETMASK 46 li %r0,SYS_compat_13_sigprocmask13 47 sc # assume no error XXX 48 or. %r3,%r6,%r6 49 bnelr 50 li %r3,1 51 blr 52
Indexes created Thu Oct 02 10:09:58 GMT 2025