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/*
* Copyright (c) 1992, 1993
* The Regents of the University of California. All rights reserved.
*
* Modified for incorporation into newlib by Joel Sherrill
* (joel@OARcorp.com), On-Line Applications Research, 1995.
* Did the following:
* + merged in DEFS.h
* + removed error check since it prevented using this setjmp
* to "context switch"
* + added the support for the "user label" and "register" prefix
*
* 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. 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: $Header$
*/
#if defined(LIBC_SCCS) && !defined(lint)
.asciz "@(#)_setjmp.s 8.1 (Berkeley) 6/4/93"
#endif /* LIBC_SCCS and not lint */
/*
* Recent versions of GNU cpp define variables which indicate the
* need for underscores and percents. If not using GNU cpp or
* the version does not support this, then you will obviously
* have to define these as appropriate.
*/
#ifndef __USER_LABEL_PREFIX__
#define __USER_LABEL_PREFIX__ _
#endif
#ifndef __REGISTER_PREFIX__
#define __REGISTER_PREFIX__
#endif
/* ANSI concatenation macros. */
#define CONCAT1(a, b) CONCAT2(a, b)
#define CONCAT2(a, b) a ## b
/* Use the right prefix for global labels. */
#define SYM(x) CONCAT1 (__USER_LABEL_PREFIX__, x)
/*********************************************************************
*********************************************************************
* Contents of DEFS.h *
*********************************************************************
*********************************************************************/
#ifdef PROF
#define ENTRY(x) \
.align 4; .globl SYM(x); .proc 1; SYM(x):; .data; .align 4; 1: .long 0; \
.text; save %sp,-96,%sp; sethi %hi(1b),%o0; call mcount; \
or %lo(1b),%o0,%o0; restore
#else
#define ENTRY(x) \
.align 4; .globl SYM(x); .proc 1; SYM(x):
#endif
/*********************************************************************
*********************************************************************
* END of DEFS.h *
*********************************************************************
*********************************************************************/
/*
* C library -- _setjmp, _longjmp
*
* _longjmp(a,v)
* will generate a "return(v?v:1)" from
* the last call to
* _setjmp(a)
* by unwinding the call stack.
* The previous signal state is NOT restored.
*/
/* #include "DEFS.h" */
ENTRY(setjmp)
ENTRY(_setjmp)
st %sp, [%o0] /* caller's stack pointer */
st %i7, [%o0+4] /* caller's return pc */
st %fp, [%o0+8] /* store caller's frame pointer */
st %o7, [%o0+12]
retl
clr %o0 ! return 0
ENTRY(longjmp)
ENTRY(_longjmp)
ta 0x03 /* flush registers */
addcc %o1, %g0, %g1 ! compute v ? v : 1 in a global register
be,a 0f
mov 1, %g1
0:
ld [%o0], %sp /* caller's stack pointer */
ldd [%sp], %l0
ldd [%sp+8], %l2
ldd [%sp+16], %l4
ldd [%sp+24], %l6
ldd [%sp+32], %i0
ldd [%sp+40], %i2
ldd [%sp+48], %i4
ld [%o0+4], %i7 /* caller's return pc */
ld [%o0+8], %fp /* caller's frame pointer */
ld [%o0+12], %o7
jmp %o7 + 8 ! success, return %g1
mov %g1, %o0
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