mirror of
https://github.com/jart/cosmopolitan.git
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2fc507c98f
* modelines: tw -> sw shiftwidth, not textwidth. * space-surround modelines * fix irregular modelines * Fix modeline in titlegen.c
64 lines
3.3 KiB
ArmAsm
64 lines
3.3 KiB
ArmAsm
/*-*- mode:unix-assembly; indent-tabs-mode:t; tab-width:8; coding:utf-8 -*-│
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│ vi: set noet ft=asm ts=8 sw=8 fenc=utf-8 :vi │
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╞══════════════════════════════════════════════════════════════════════════════╡
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│ │
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│ Musl Libc │
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│ Copyright © 2005-2014 Rich Felker, et al. │
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│ │
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│ Permission is hereby granted, free of charge, to any person obtaining │
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│ a copy of this software and associated documentation files (the │
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│ "Software"), to deal in the Software without restriction, including │
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│ without limitation the rights to use, copy, modify, merge, publish, │
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│ distribute, sublicense, and/or sell copies of the Software, and to │
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│ permit persons to whom the Software is furnished to do so, subject to │
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│ the following conditions: │
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│ │
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│ The above copyright notice and this permission notice shall be │
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│ included in all copies or substantial portions of the Software. │
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│ │
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│ THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, │
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│ EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF │
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│ MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. │
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│ IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY │
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│ CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, │
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│ TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE │
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│ SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. │
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│ │
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╚─────────────────────────────────────────────────────────────────────────────*/
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#include "libc/macros.internal.h"
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// Saves caller CPU state and signal mask.
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//
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// @param rdi points to jmp_buf
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// @param esi if non-zero will cause mask to be saved
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// @return eax 0 when set and !0 when longjmp'd
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// @returnstwice
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sigsetjmp:
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#ifdef __x86_64__
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test %esi,%esi
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jz setjmp
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popq 64(%rdi)
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mov %rbx,72(%rdi)
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mov %rdi,%rbx
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call setjmp
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pushq 64(%rbx)
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mov %rbx,%rdi
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mov %eax,%esi
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mov 72(%rdi),%rbx
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jmp __sigsetjmp_tail
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#elif defined(__aarch64__)
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cbz x1,setjmp
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str x30,[x0,#176]
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str x19,[x0,#176+8+8]
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mov x19,x0
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bl setjmp
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mov w1,w0
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mov x0,x19
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ldr x30,[x0,#176]
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ldr x19,[x0,#176+8+8]
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b __sigsetjmp_tail
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#else
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#error "unsupported architecture"
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#endif
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.hidden __sigsetjmp_tail
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.endfn sigsetjmp,globl
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