mirror of
https://github.com/jart/cosmopolitan.git
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128 lines
4.4 KiB
ArmAsm
128 lines
4.4 KiB
ArmAsm
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/*-*- 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 2021 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/macho.internal.h"
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#include "libc/sysv/consts/prot.h"
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#include "libc/dce.h"
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#include "libc/macros.internal.h"
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// APE Loader Executable Structure for XNU
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.align 4096
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macho: .long 0xFEEDFACE+1
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.long MAC_CPU_NEXGEN32E
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.long MAC_CPU_NEXGEN32E_ALL
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.long MAC_EXECUTE
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.long 5 # number of load commands
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.long 60f-10f # size of all load commands
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.long MAC_NOUNDEFS # flags
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.long 0 # reserved
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10: .long MAC_LC_SEGMENT_64
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.long 20f-10b # unmaps first page dir
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.ascin "__PAGEZERO",16 # consistent with linux
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.quad 0,0x200000,0,0 # which forbids mem <2m
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.long 0,0,0,0
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20: .long MAC_LC_SEGMENT_64
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.long 30f-20b
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.ascin "__TEXT",16
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.quad macho # vaddr
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.quad filesz # memsz
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.quad 0 # file offset
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.quad filesz # file size
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.long PROT_EXEC|PROT_READ|PROT_WRITE # maxprot
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.long PROT_EXEC|PROT_READ # initprot
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.long 1 # segment section count
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.long 0 # flags
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210: .ascin "__text",16 # section name (.text)
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.ascin "__TEXT",16
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.quad _start # vaddr
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.quad textsz # memsz
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.long textoff # offset
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.long 3 # align 2**3 = 8
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.long 0 # reloc table offset
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.long 0 # relocation count
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.long MAC_S_ATTR_SOME_INSTRUCTIONS # section type & attributes
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.long 0,0,0 # reserved
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30: .long MAC_LC_SEGMENT_64
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.long 40f-30b
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.ascin "__DATA",16
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.quad bss # vaddr
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.quad bsssize # memsz
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.quad 0 # offset
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.quad 0 # file size
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.long PROT_EXEC|PROT_READ|PROT_WRITE # maxprot
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.long PROT_READ|PROT_WRITE # initprot
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.long 1 # segment section count
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.long 0 # flags
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310: .ascin "__bss",16 # section name (.bss)
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.ascin "__DATA",16
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.quad bss # vaddr
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.quad bsssize # memsz
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.long 0 # offset
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.long 12 # align 2**12 = 4096
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.long 0 # reloc table offset
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.long 0 # relocation count
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.long MAC_S_ZEROFILL # section type & attributes
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.long 0,0,0 # reserved
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40: .long MAC_LC_UUID
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.long 50f-40b
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.quad 0x3fb29ee4ac6c87aa # uuid1
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.quad 0xdd2c9bb866d9eef8 # uuid2
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50: .long MAC_LC_UNIXTHREAD
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.long 60f-50b # cmdsize
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.long MAC_THREAD_NEXGEN32E # flavaflav
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.long (520f-510f)/4 # count
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510: .quad 0 # rax
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.quad 0 # rbx
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.quad 0 # rcx
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.quad XNU # rdx
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.quad 0 # rdi
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.quad 0 # rsi
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.quad 0 # rbp
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.quad 0 # rsp
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.quad 0 # r8
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.quad 0 # r9
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.quad 0 # r10
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.quad 0 # r11
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.quad 0 # r12
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.quad 0 # r13
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.quad 0 # r14
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.quad 0 # r15
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.quad _start # rip
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.quad 0 # rflags
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.quad 0 # cs
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.quad 0 # fs
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.quad 0 # gs
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520:
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60:
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.endobj macho,globl
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.align 8
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_start: mov %rsp,%rsi
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jmp ApeLoader
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.endfn _start,globl
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__syscall_loader:
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clc
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syscall
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jc 1f
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ret
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1: neg %rax
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ret
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.endfn __syscall_loader,globl
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