/*
 * Copyright (c) 2004 Suleiman Souhlal
 * All rights reserved.
 *
 * 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.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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.
 */

 #include <machine/asm.h>
        .globl  CNAME(_ctx_done)
        .globl  CNAME(abort)

 ENTRY(_ctx_start)
#if !defined(_CALL_ELF) || _CALL_ELF == 1
        /* Load values from function descriptor */
        ld      %r2,8(%r14)
        ld      %r14,0(%r14)
#else
        /*
         * The stack frame was already set up in makecontext(),
         * so we can safely use the guaranteed fields here.
         *
         * Note we do step on the allocated stack frame's TOC,
         * but since we never return from this function (i.e.
         * never restore the stack frame) this should be safe.
         */
        std     %r2,24(%r1)     /* save TOC */

        /* Load global entry point */
        mr      %r12,%r14
#endif
        mtlr    %r14
        blrl                    /* branch to start function */
        mr      %r3,%r15        /* pass pointer to ucontext as argument */
        nop
#if defined(_CALL_ELF) && _CALL_ELF != 1
        /* Restore TOC */
        ld      %r2,24(%r1)
#endif
        bl      CNAME(_ctx_done) /* branch to ctxt completion func */
        /*
         * we should never return from the
         * above branch.
         */
        nop
        bl      CNAME(abort)    /* abort */
        nop
 END(_ctx_start)

        .section .note.GNU-stack,"",%progbits