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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. 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: /cvs/cvsfiles/devo/newlib/libc/machine/sparc/setjmp.S,v 1.1 1997/06/25 07:19:16 marka Exp $

 */

#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, %g6   ! compute v ? v : 1 in a global register

        be,a    0f

        mov     1, %g6

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 %g6

        mov     %g6, %o0