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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
59 lines
2.4 KiB
ArmAsm
59 lines
2.4 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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│ Copyright 2023 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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// Calls function on different stack.
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//
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// @param %rdi is arg1
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// @param %rsi is arg2
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// @param %rdx is arg3
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// @param %rcx is arg4
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// @param %r8 is func
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// @param %r9 is stack
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// @return %rax is res
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__stack_call:
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#ifdef __x86_64__
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push %rbx
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push %r15
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mov %rbp,%r15
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mov %rsp,%rbx
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mov %r9,%rsp
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xor %rbp,%rbp
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call *%r8
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mov %r15,%rbp
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mov %rbx,%rsp
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pop %r15
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pop %rbx
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ret
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#elif defined(__aarch64__)
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stp x29,x30,[sp,#-32]!
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str x27,[sp,16]
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mov x27,sp
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and sp,x5,#-16
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mov x29,0
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blr x4
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mov sp,x27
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ldr x27,[sp,16]
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ldp x29,x30,[sp],#32
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ret
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#else
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#error "unsupported architecture"
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#endif
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.endfn __stack_call,globl
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