diff options
Diffstat (limited to 'lib/libc/sparc64/gen/setjmp.S')
| -rw-r--r-- | lib/libc/sparc64/gen/setjmp.S | 118 |
1 files changed, 118 insertions, 0 deletions
diff --git a/lib/libc/sparc64/gen/setjmp.S b/lib/libc/sparc64/gen/setjmp.S new file mode 100644 index 0000000..c96bc42 --- /dev/null +++ b/lib/libc/sparc64/gen/setjmp.S @@ -0,0 +1,118 @@ +/* + * Copyright (c) 1992, 1993 + * The Regents of the University of California. All rights reserved. + * + * This software was developed by the Computer Systems Engineering group + * at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and + * contributed to Berkeley. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by the University of + * California, Berkeley and its contributors. + * 4. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + * + * from: Header: _setjmp.s,v 1.1 91/07/06 16:45:53 torek Exp + */ + +#if defined(LIBC_SCCS) && !defined(lint) +#if 0 + .asciz "@(#)_setjmp.s 8.1 (Berkeley) 6/4/93" +#else + RCSID("$NetBSD: _setjmp.S,v 1.4 1998/10/08 02:27:59 eeh Exp $") +#endif +#endif /* LIBC_SCCS and not lint */ + +#if defined(SYSLIBC_RCS) && !defined(lint) + .text + .asciz "$FreeBSD$" +#endif /* SYSLIBC_RCS and not lint */ + +#include <machine/asm.h> + +#include "assym.s" + + .register %g2,#ignore + .register %g3,#ignore + +/* + * C library -- setjmp, longjmp + * + * longjmp(a,v) + * will generate a "return(v?v:1)" from + * the last call to + * setjmp(a) + * by restoring the previous context. + */ + +ENTRY(setjmp) + save %sp, -CCFSZ, %sp + mov SIG_BLOCK, %o0 + clr %o1 + call CNAME(sigprocmask) + add %i0, _JB_SIGMASK, %o2 + restore + stx %sp, [%o0 + _JB_SP] + stx %o7, [%o0 + _JB_PC] + stx %fp, [%o0 + _JB_FP] + retl + clr %o0 +END(setjmp) + + .weak CNAME(longjmp) + .set CNAME(longjmp),CNAME(__longjmp) +ENTRY(__longjmp) + save %sp, -CCFSZ, %sp + mov SIG_SETMASK, %o0 + add %i0, _JB_SIGMASK, %o1 + call CNAME(sigprocmask) + clr %o2 + restore + mov 1, %g1 + movrnz %o1, %o1, %g1 + mov %o0, %g2 + ldx [%g2 + _JB_FP], %g3 +1: cmp %fp, %g3 + bl,a 1b + restore + be,a 2f + ldx [%g2 + _JB_SP], %o0 + +.Lbotch: + call CNAME(longjmperror) + nop + call CNAME(abort) + nop + illtrap + +2: cmp %o0, %sp + bge,a 3f + mov %o0, %sp + b,a .Lbotch + nop +3: ldx [%g2 + _JB_PC], %o7 + retl + mov %g1, %o0 +END(__longjmp) |
