mirror of
https://github.com/jart/cosmopolitan.git
synced 2025-02-01 12:03:41 +00:00
ae0ee59614
$ m=aarch64-tiny
$ make -j8 m=$m o/$m/tool/hello/hello.com o/third_party/qemu/qemu-aarch64
$ o/third_party/qemu/qemu-aarch64 o/$m/tool/hello/hello.com
hello world
$ ls -hal o/$m/tool/hello/hello.com
-rwxr-xr-x 1 jart jart 4.0K May 9 05:04 o/aarch64-tiny/tool/hello/hello.com
39 lines
2.2 KiB
ArmAsm
39 lines
2.2 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 2022 Justine Alexandra Roberts Tunney │
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│ │
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│ Permission to use, copy, modify, and/or distribute this software for │
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│ any purpose with or without fee is hereby granted, provided that the │
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│ above copyright notice and this permission notice appear in all copies. │
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│ │
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│ THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL │
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│ WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED │
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│ WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE │
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│ AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL │
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│ DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR │
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│ PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER │
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│ TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR │
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│ PERFORMANCE OF THIS SOFTWARE. │
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╚─────────────────────────────────────────────────────────────────────────────*/
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#include "libc/macros.internal.h"
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.text.unlikely
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__errfun:
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#ifdef __x86_64__
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call __errno_location
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mov %ecx,(%rax)
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push $-1
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pop %rax
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.leafepilogue // .leafprologue is in errfuns/...
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#elif defined(__aarch64__)
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stp x19,x30,[sp,#-16]!
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mov w19,w0
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bl __errno_location
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str w19,[x0]
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mov x0,#-1
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ldp x19,x30,[sp],#16
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#else
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#error "unsupported architecture"
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#endif
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.endfn __errfun,globl,hidden
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