/*
 * CDDL HEADER START
 *
 * The contents of this file are subject to the terms of the
 * Common Development and Distribution License (the "License").
 * You may not use this file except in compliance with the License.
 *
 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
 * or http://www.opensolaris.org/os/licensing.
 * See the License for the specific language governing permissions
 * and limitations under the License.
 *
 * When distributing Covered Code, include this CDDL HEADER in each
 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
 * If applicable, add the following below this CDDL HEADER, with the
 * fields enclosed by brackets "[]" replaced with your own identifying
 * information: Portions Copyright [yyyy] [name of copyright owner]
 *
 * CDDL HEADER END
 */
/*
 * Copyright 2010 Sun Microsystems, Inc.  All rights reserved.
 * Use is subject to license terms.
 */

        .file   "unwind_frame.s"

#ifdef _LIBCRUN_
#define ENTRY(x) \
        .text; \
        .align  8; \
        .globl  x; \
        .type   x, @function; \
        x:
#define SET_SIZE(x) \
        .size   x, .-x
#else
#include "SYS.h"
#endif

/*
 * ====================
 * _Unw_capture_regs()
 * --------------------
 *
 *      Given  foo()->ex_throw()->_Unwind_RaiseException()->_Unw_capture_regs()
 *      fills in a register array with FP and the preserved registers
 */
        ENTRY(_Unw_capture_regs)
        movq    %rbx,24(%rdi)           /* save preserved registers */
        movq    %rbp,48(%rdi)
        movq    %r12,96(%rdi)
        movq    %r13,104(%rdi)
        movq    %r14,112(%rdi)
        movq    %r15,120(%rdi)
        ret
        SET_SIZE(_Unw_capture_regs)

/*
 * ====================
 * _Unw_jmp
 * --------------------
 *
 * _Unw_jmp is passed a pc and an array of register values.
 */

        ENTRY(_Unw_jmp)
        movq    %rdi,%r8                /* save arguments to this func */
        movq    %rsi,%rax
        movq    40(%rax),%rdi           /* set handler parameters */
        movq    32(%rax),%rsi
        movq    8(%rax),%rdx
        movq    16(%rax),%rcx
        movq    24(%rax),%rbx           /* restore preserved registers */
        movq    96(%rax),%r12
        movq    104(%rax),%r13
        movq    112(%rax),%r14
        movq    120(%rax),%r15
        movq    48(%rax),%rbp
        movq    56(%rax),%rsp
        movq    (%rax),%rax
        jmp     *%r8                    /* branch to handler */
        SET_SIZE(_Unw_jmp)