| 1 | /* |
|---|
| 2 | * GRUB -- GRand Unified Bootloader |
|---|
| 3 | * Copyright (C) 2003 Free Software Foundation, Inc. |
|---|
| 4 | * |
|---|
| 5 | * This program is free software; you can redistribute it and/or modify |
|---|
| 6 | * it under the terms of the GNU General Public License as published by |
|---|
| 7 | * the Free Software Foundation; either version 2 of the License, or |
|---|
| 8 | * (at your option) any later version. |
|---|
| 9 | * |
|---|
| 10 | * This program is distributed in the hope that it will be useful, |
|---|
| 11 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
|---|
| 12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
|---|
| 13 | * GNU General Public License for more details. |
|---|
| 14 | * |
|---|
| 15 | * You should have received a copy of the GNU General Public License |
|---|
| 16 | * along with this program; if not, see <http://www.gnu.org/licenses/>. |
|---|
| 17 | */ |
|---|
| 18 | |
|---|
| 19 | #define EXT_C(sym) sym |
|---|
| 20 | #define FUNCTION(x) .globl EXT_C(x) ; .type EXT_C(x), @function ; EXT_C(x): |
|---|
| 21 | |
|---|
| 22 | .file "setjmp.S" |
|---|
| 23 | |
|---|
| 24 | .text |
|---|
| 25 | |
|---|
| 26 | /* |
|---|
| 27 | * int setjmp (jmp_buf env) |
|---|
| 28 | */ |
|---|
| 29 | FUNCTION(setjmp) |
|---|
| 30 | pop %rsi /* Return address, and adjust the stack */ |
|---|
| 31 | xor %rax, %rax |
|---|
| 32 | movq %rbx, 0(%rdi) /* RBX */ |
|---|
| 33 | movq %rsp, 8(%rdi) /* RSP */ |
|---|
| 34 | push %rsi |
|---|
| 35 | movq %rbp, 16(%rdi) /* RBP */ |
|---|
| 36 | movq %r12, 24(%rdi) /* R12 */ |
|---|
| 37 | movq %r13, 32(%rdi) /* R13 */ |
|---|
| 38 | movq %r14, 40(%rdi) /* R14 */ |
|---|
| 39 | movq %r15, 48(%rdi) /* R15 */ |
|---|
| 40 | movq %rsi, 56(%rdi) /* RSI */ |
|---|
| 41 | ret |
|---|
| 42 | |
|---|
| 43 | /* |
|---|
| 44 | * int longjmp (jmp_buf env, int val) |
|---|
| 45 | */ |
|---|
| 46 | FUNCTION(longjmp) |
|---|
| 47 | movl %esi, %eax |
|---|
| 48 | movq (%rdi), %rbx |
|---|
| 49 | movq 8(%rdi), %rsp |
|---|
| 50 | movq 16(%rdi), %rbp |
|---|
| 51 | movq 24(%rdi), %r12 |
|---|
| 52 | movq 32(%rdi), %r13 |
|---|
| 53 | movq 40(%rdi), %r14 |
|---|
| 54 | movq 48(%rdi), %r15 |
|---|
| 55 | jmp *56(%rdi) |
|---|
| 56 | |
|---|
