68 lines
1.6 KiB
ArmAsm
68 lines
1.6 KiB
ArmAsm
/*
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* GRUB -- GRand Unified Bootloader
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* Copyright (C) 2003,2007 Free Software Foundation, Inc.
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*
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* GRUB is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* GRUB is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with GRUB. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include <grub/symbol.h>
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#include <grub/dl.h>
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.file "setjmp.S"
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GRUB_MOD_LICENSE "GPLv3+"
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.text
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/*
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* jmp_buf:
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* rbx rsp rbp r12 r13 r14 r15 rip
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* 0 8 16 24 32 40 48 56
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*/
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/*
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* int grub_setjmp (grub_jmp_buf env)
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*/
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FUNCTION(grub_setjmp)
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pop %rsi /* Return address, and adjust the stack */
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xorq %rax, %rax
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movq %rbx, 0(%rdi) /* RBX */
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movq %rsp, 8(%rdi) /* RSP */
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push %rsi
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movq %rbp, 16(%rdi) /* RBP */
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movq %r12, 24(%rdi) /* R12 */
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movq %r13, 32(%rdi) /* R13 */
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movq %r14, 40(%rdi) /* R14 */
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movq %r15, 48(%rdi) /* R15 */
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movq %rsi, 56(%rdi) /* RSI */
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ret
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/*
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* int grub_longjmp (grub_jmp_buf env, int val)
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*/
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FUNCTION(grub_longjmp)
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movl %esi, %eax
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orl %eax, %eax
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jnz 1f
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incl %eax
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1:
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movq (%rdi), %rbx
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movq 8(%rdi), %rsp
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movq 16(%rdi), %rbp
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movq 24(%rdi), %r12
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movq 32(%rdi), %r13
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movq 40(%rdi), %r14
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movq 48(%rdi), %r15
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jmp *56(%rdi)
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