cosmopolitan/libc/nt/ntdllimport.S
Justine Tunney 1422e96b4e
Introduce native support for MacOS ARM64
There's a new program named ape/ape-m1.c which will be used to build an
embeddable binary that can load ape and elf executables. The support is
mostly working so far, but still chasing down ABI issues.
2023-05-20 04:17:03 -07:00

70 lines
2.8 KiB
ArmAsm

/*-*- mode:unix-assembly; indent-tabs-mode:t; tab-width:8; coding:utf-8 -*-│
vi: set et ft=asm ts=8 tw=8 fenc=utf-8 :vi
Copyright 2020 Justine Alexandra Roberts Tunney
Permission to use, copy, modify, and/or distribute this software for
any purpose with or without fee is hereby granted, provided that the
above copyright notice and this permission notice appear in all copies.
THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL
WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED
WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE
AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL
DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR
PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
PERFORMANCE OF THIS SOFTWARE.
*/
#include "libc/nt/enum/status.h"
#include "libc/macros.internal.h"
#ifdef __x86_64__
// @fileoverview NTDLL.DLL Non-Mandatory Importer
//
// This module lets us import Microsoft's private APIs in a way
// that ensures executables won't fail to load in the future,
// should Microsoft ever choose to delete these APIs.
.initro 202,_init_ntdll.1
.type kNtdllProcRvas,@object
kNtdllProcRvas:
.previous/*
...
decentralized content
...
*/.initro 202,_init_ntdll.3
.quad 0
.previous
.init.start 202,_init_ntdll
push %r12
push %r13
lea _ntdllmissingno(%rip),%r13
sub $32,%rsp
loadstr "ntdll.dll",cx
call *__imp_GetModuleHandleA(%rip)
mov %rax,%r12
0: lodsq
test %rax,%rax
jz 1f
.weak __executable_start
lea __executable_start(%rax),%rdx
mov %r12,%rcx
call *__imp_GetProcAddress(%rip)
test %rax,%rax
cmovz %r13,%rax
stosq
jmp 0b
1: add $32,%rsp
pop %r13
pop %r12
.init.end 202,_init_ntdll,globl,hidden
.text.windows
_ntdllmissingno:
mov $kNtStatusDllNotFound,%eax
ret
.previous
#endif /* __x86_64__ */