| /* |
| * Copyright (c) 2012 The Native Client Authors. All rights reserved. |
| * Use of this source code is governed by a BSD-style license that can be |
| * found in the LICENSE file. |
| */ |
| |
| #include "nacl_x86_defs.h" |
| |
| /* |
| * jump_buf is organized as follows |
| * rbx, rbp, rsp, r12, r13, r14, r15, pc |
| */ |
| .text |
| .p2align NACL_BLOCK_SHIFT |
| .globl setjmp |
| .type setjmp, @function |
| |
| /* int setjmp(jmp_buf env) */ |
| setjmp: |
| /* edi has env argument*/ |
| pop %rdx /* return address */ |
| |
| movq %rbx, %nacl:0(%rdi) /* save rbx */ |
| movq %rbp, %nacl:8(%rdi) /* save rbp */ |
| movq %rsp, %nacl:16(%rdi) /* save rsp */ |
| movq %r12, %nacl:24(%rdi) /* save r12 */ |
| movq %r13, %nacl:32(%rdi) /* save r13 */ |
| movq %r14, %nacl:40(%rdi) /* save r14 */ |
| movq %r15, %nacl:48(%rdi) /* save r15 */ |
| movq %rdx, %nacl:56(%rdi) /* save pc */ |
| |
| xorq %rax, %rax |
| nacljmp %edx |
| |
| |
| .text |
| .p2align NACL_BLOCK_SHIFT |
| .globl longjmp |
| .type longjmp, @function |
| |
| /* void longjmp(jmp_buf env, int val) */ |
| longjmp: |
| /* edi has env argument */ |
| /* esi has val argument */ |
| movl %esi, %eax |
| /* if val is zero, we must return 1 -- otherwise return val */ |
| testl %eax, %eax |
| jne .skip |
| movl $1, %eax |
| .skip: |
| movq %nacl:0(%rdi), %rbx /* restore rbx */ |
| movq %nacl:8(%rdi), %rdx /* restore rbp */ |
| naclrestbp %edx |
| movq %nacl:16(%rdi), %rdx /* restore rsp */ |
| naclrestsp %edx |
| movq %nacl:24(%rdi), %r12 /* restore r12 */ |
| movq %nacl:32(%rdi), %r13 /* restore r13 */ |
| movq %nacl:40(%rdi), %r14 /* restore r14 */ |
| movq %nacl:48(%rdi), %r15 /* restore r15 */ |
| movq %nacl:56(%rdi), %rcx |
| nacljmp %ecx |
| .p2align NACL_BLOCK_SHIFT |
| |
