1/* 2 * CDDL HEADER START 3 * 4 * The contents of this file are subject to the terms of the 5 * Common Development and Distribution License (the "License"). 6 * You may not use this file except in compliance with the License. 7 * 8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 9 * or http://www.opensolaris.org/os/licensing. 10 * See the License for the specific language governing permissions 11 * and limitations under the License. 12 * 13 * When distributing Covered Code, include this CDDL HEADER in each 14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 15 * If applicable, add the following below this CDDL HEADER, with the 16 * fields enclosed by brackets "[]" replaced with your own identifying 17 * information: Portions Copyright [yyyy] [name of copyright owner] 18 * 19 * CDDL HEADER END 20 */ 21/* 22 * Copyright 2010 Sun Microsystems, Inc. All rights reserved. 23 * Use is subject to license terms. 24 */ 25 26 .file "unwind_frame.s" 27 28#ifdef _LIBCRUN_ 29#define ENTRY(x) \ 30 .text; \ 31 .align 8; \ 32 .globl x; \ 33 .type x, @function; \ 34 x: 35#define SET_SIZE(x) \ 36 .size x, .-x 37#else 38#include "SYS.h" 39#endif 40 41/* 42 * ==================== 43 * _Unw_capture_regs() 44 * -------------------- 45 * 46 * Given foo()->ex_throw()->_Unwind_RaiseException()->_Unw_capture_regs() 47 * fills in a register array with FP and the preserved registers 48 */ 49 ENTRY(_Unw_capture_regs) 50 movq %rbx,24(%rdi) /* save preserved registers */ 51 movq %rbp,48(%rdi) 52 movq %r12,96(%rdi) 53 movq %r13,104(%rdi) 54 movq %r14,112(%rdi) 55 movq %r15,120(%rdi) 56 ret 57 SET_SIZE(_Unw_capture_regs) 58 59/* 60 * ==================== 61 * _Unw_jmp 62 * -------------------- 63 * 64 * _Unw_jmp is passed a pc and an array of register values. 65 */ 66 67 ENTRY(_Unw_jmp) 68 movq %rdi,%r8 /* save arguments to this func */ 69 movq %rsi,%rax 70 movq 40(%rax),%rdi /* set handler parameters */ 71 movq 32(%rax),%rsi 72 movq 8(%rax),%rdx 73 movq 16(%rax),%rcx 74 movq 24(%rax),%rbx /* restore preserved registers */ 75 movq 96(%rax),%r12 76 movq 104(%rax),%r13 77 movq 112(%rax),%r14 78 movq 120(%rax),%r15 79 movq 48(%rax),%rbp 80 movq 56(%rax),%rsp 81 movq (%rax),%rax 82 jmp *%r8 /* branch to handler */ 83 SET_SIZE(_Unw_jmp) 84