63 lines
2.8 KiB
ArmAsm
63 lines
2.8 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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│ 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.h"
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.text.windows
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/ Epilogues for calling functions w/ Microsoft x64 convention.
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/
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/ @param %rax is address of windows x64 function to call
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/ @param %rsi is ignored
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/ @param %rdx,%rcx,%r8,%r9,stack are params (unlimited)
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/ @param %xmm0,%xmm1,%xmm2 are double params (limited to 3)
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/ @return is in %rax, %xmm0, or %st
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/ @note GCC 4.8+ and Clang can avoid this indirection
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/ @note thunk that jumps here must setup frame
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/ @note this is so much faster than __nt2sysv()
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__sysv2nt14:
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pushq 72(%rbp)
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pushq 64(%rbp)
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__sysv2nt12:
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pushq 56(%rbp)
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pushq 48(%rbp)
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__sysv2nt10:
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pushq 40(%rbp)
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pushq 32(%rbp)
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__sysv2nt8:
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pushq 24(%rbp)
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pushq 16(%rbp)
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__sysv2nt6:
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push %r9
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push %r8
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__sysv2nt:
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mov %rdx,%r8
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mov %rcx,%r9
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mov %rdi,%rcx
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mov %rsi,%rdx
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sub $32,%rsp
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call *%rax
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leave
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ret
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.endfn __sysv2nt,globl,hidden
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.endfn __sysv2nt6,globl,hidden
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.endfn __sysv2nt8,globl,hidden
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.endfn __sysv2nt10,globl,hidden
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.endfn __sysv2nt12,globl,hidden
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.endfn __sysv2nt14,globl,hidden
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.source __FILE__
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