45 lines
2.5 KiB
ArmAsm
45 lines
2.5 KiB
ArmAsm
/*-*- mode:unix-assembly; indent-tabs-mode:t; tab-width:8; coding:utf-8 -*-│
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│vi: set et ft=asm ts=8 tw=8 fenc=utf-8 :vi│
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╞══════════════════════════════════════════════════════════════════════════════╡
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│ Copyright 2020 Justine Alexandra Roberts Tunney │
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│ │
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│ This program 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; version 2 of the License. │
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│ │
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│ This program is distributed in the hope that it will be useful, but │
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│ WITHOUT ANY WARRANTY; without even the implied warranty of │
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│ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU │
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│ 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 this program; if not, write to the Free Software │
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│ Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA │
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│ 02110-1301 USA │
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╚─────────────────────────────────────────────────────────────────────────────*/
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#include "libc/macros.h"
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.privileged
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/ Loads previously saved processor state.
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/
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/ @param rdi points to the jmp_buf
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/ @param esi is returned by setjmp() invocation (coerced nonzero)
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/ @noreturn
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/ @assume system five nexgen32e abi conformant
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/ @note code built w/ microsoft abi compiler can't call this
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/ @see gclongjmp() unwinds gc() destructors
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longjmp:mov %esi,%eax
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test %eax,%eax
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jnz 1f
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inc %eax
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1: mov (%rdi),%rsp
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mov 8(%rdi),%rbx
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mov 16(%rdi),%rbp
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mov 24(%rdi),%r12
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mov 32(%rdi),%r13
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mov 40(%rdi),%r14
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mov 48(%rdi),%r15
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jmp *56(%rdi)
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.endfn longjmp,globl
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.source __FILE__
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