59 lines
2.6 KiB
ArmAsm
59 lines
2.6 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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.text.windows
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/ Translates function call from code built w/ MS-style compiler.
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/
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/ This wraps WinMain() and callback functions passed to Win32 API.
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/ Please note an intermediary jump slot is needed to set %rax.
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/
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/ @param %rax is function address
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/ @param %rcx,%rdx,%r8,%r9
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/ @return %rax,%xmm0
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/ @note this is so much slower than sysv2nt()
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__nt2sysv:
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push %rbp
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mov %rsp,%rbp
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.profilable
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sub $0x100,%rsp
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push %rbx
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push %rdi
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push %rsi
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pushf
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ezlea _base,bx
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lea -0x80(%rbp),%rdi
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call savexmm
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mov %rcx,%rdi
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mov %rdx,%rsi
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mov %r8,%rdx
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mov %r9,%rcx
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call *%rax
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lea -0x80(%rbp),%rdi
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call loadxmm
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popf
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pop %rsi
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pop %rdi
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pop %rbx
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leave
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ret
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.endfn __nt2sysv,globl,hidden
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.source __FILE__
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