135 lines
3.8 KiB
ArmAsm
135 lines
3.8 KiB
ArmAsm
|
/* SPDX-License-Identifier: GPL-2.0+ OR BSD-2-Clause */
|
||
|
|
/*
|
||
|
|
* crt0-efi-aarch64.S - PE/COFF header for aarch64 EFI applications
|
||
|
|
*
|
||
|
|
* Copright (C) 2014 Linaro Ltd. <ard.biesheuvel@linaro.org>
|
||
|
|
*
|
||
|
|
*
|
||
|
|
* This file is taken and modified from the gnu-efi project.
|
||
|
|
*/
|
||
|
|
|
||
|
|
#include <asm-generic/pe.h>
|
||
|
|
|
||
|
|
.section .text.head
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Magic "MZ" signature for PE/COFF
|
||
|
|
*/
|
||
|
|
.globl ImageBase
|
||
|
|
ImageBase:
|
||
|
|
.short IMAGE_DOS_SIGNATURE /* 'MZ' */
|
||
|
|
.skip 58 /* 'MZ' + pad + offset == 64 */
|
||
|
|
.long pe_header - ImageBase /* Offset to the PE header */
|
||
|
|
pe_header:
|
||
|
|
.long IMAGE_NT_SIGNATURE /* 'PE' */
|
||
|
|
coff_header:
|
||
|
|
.short IMAGE_FILE_MACHINE_ARM64 /* AArch64 */
|
||
|
|
.short 2 /* nr_sections */
|
||
|
|
.long 0 /* TimeDateStamp */
|
||
|
|
.long 0 /* PointerToSymbolTable */
|
||
|
|
.long 0 /* NumberOfSymbols */
|
||
|
|
.short section_table - optional_header /* SizeOfOptionalHeader */
|
||
|
|
/* Characteristics */
|
||
|
|
.short (IMAGE_FILE_EXECUTABLE_IMAGE | \
|
||
|
|
IMAGE_FILE_LINE_NUMS_STRIPPED | \
|
||
|
|
IMAGE_FILE_LOCAL_SYMS_STRIPPED | \
|
||
|
|
IMAGE_FILE_DEBUG_STRIPPED)
|
||
|
|
optional_header:
|
||
|
|
.short IMAGE_NT_OPTIONAL_HDR64_MAGIC /* PE32+ format */
|
||
|
|
.byte 0x02 /* MajorLinkerVersion */
|
||
|
|
.byte 0x14 /* MinorLinkerVersion */
|
||
|
|
.long _edata - _start /* SizeOfCode */
|
||
|
|
.long 0 /* SizeOfInitializedData */
|
||
|
|
.long 0 /* SizeOfUninitializedData */
|
||
|
|
.long _start - ImageBase /* AddressOfEntryPoint */
|
||
|
|
.long _start - ImageBase /* BaseOfCode */
|
||
|
|
|
||
|
|
extra_header_fields:
|
||
|
|
.quad 0 /* ImageBase */
|
||
|
|
.long 0x20 /* SectionAlignment */
|
||
|
|
.long 0x8 /* FileAlignment */
|
||
|
|
.short 0 /* MajorOperatingSystemVersion */
|
||
|
|
.short 0 /* MinorOperatingSystemVersion */
|
||
|
|
.short 0 /* MajorImageVersion */
|
||
|
|
.short 0 /* MinorImageVersion */
|
||
|
|
.short 0 /* MajorSubsystemVersion */
|
||
|
|
.short 0 /* MinorSubsystemVersion */
|
||
|
|
.long 0 /* Win32VersionValue */
|
||
|
|
|
||
|
|
.long _edata - ImageBase /* SizeOfImage */
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Everything before the kernel image is considered part of the header
|
||
|
|
*/
|
||
|
|
.long _start - ImageBase /* SizeOfHeaders */
|
||
|
|
.long 0 /* CheckSum */
|
||
|
|
.short IMAGE_SUBSYSTEM_EFI_APPLICATION /* Subsystem */
|
||
|
|
.short 0 /* DllCharacteristics */
|
||
|
|
.quad 0 /* SizeOfStackReserve */
|
||
|
|
.quad 0 /* SizeOfStackCommit */
|
||
|
|
.quad 0 /* SizeOfHeapReserve */
|
||
|
|
.quad 0 /* SizeOfHeapCommit */
|
||
|
|
.long 0 /* LoaderFlags */
|
||
|
|
.long 0x6 /* NumberOfRvaAndSizes */
|
||
|
|
|
||
|
|
.quad 0 /* ExportTable */
|
||
|
|
.quad 0 /* ImportTable */
|
||
|
|
.quad 0 /* ResourceTable */
|
||
|
|
.quad 0 /* ExceptionTable */
|
||
|
|
.quad 0 /* CertificationTable */
|
||
|
|
.quad 0 /* BaseRelocationTable */
|
||
|
|
|
||
|
|
/* Section table */
|
||
|
|
section_table:
|
||
|
|
|
||
|
|
/*
|
||
|
|
* The EFI application loader requires a relocation section
|
||
|
|
* because EFI applications must be relocatable. This is a
|
||
|
|
* dummy section as far as we are concerned.
|
||
|
|
*/
|
||
|
|
.ascii ".reloc"
|
||
|
|
.byte 0
|
||
|
|
.byte 0 /* end of 0 padding of section name */
|
||
|
|
.long 0
|
||
|
|
.long 0
|
||
|
|
.long 0 /* SizeOfRawData */
|
||
|
|
.long 0 /* PointerToRawData */
|
||
|
|
.long 0 /* PointerToRelocations */
|
||
|
|
.long 0 /* PointerToLineNumbers */
|
||
|
|
.short 0 /* NumberOfRelocations */
|
||
|
|
.short 0 /* NumberOfLineNumbers */
|
||
|
|
.long 0x42100040 /* Characteristics (section flags) */
|
||
|
|
|
||
|
|
|
||
|
|
.ascii ".text"
|
||
|
|
.byte 0
|
||
|
|
.byte 0
|
||
|
|
.byte 0 /* end of 0 padding of section name */
|
||
|
|
.long _edata - _start /* VirtualSize */
|
||
|
|
.long _start - ImageBase /* VirtualAddress */
|
||
|
|
.long _edata - _start /* SizeOfRawData */
|
||
|
|
.long _start - ImageBase /* PointerToRawData */
|
||
|
|
|
||
|
|
.long 0 /* PointerToRelocations (0 for executables) */
|
||
|
|
.long 0 /* PointerToLineNumbers (0 for executables) */
|
||
|
|
.short 0 /* NumberOfRelocations (0 for executables) */
|
||
|
|
.short 0 /* NumberOfLineNumbers (0 for executables) */
|
||
|
|
.long 0xe0500020 /* Characteristics (section flags) */
|
||
|
|
|
||
|
|
_start:
|
||
|
|
stp x29, x30, [sp, #-32]!
|
||
|
|
mov x29, sp
|
||
|
|
|
||
|
|
stp x0, x1, [sp, #16]
|
||
|
|
adr x0, ImageBase
|
||
|
|
adrp x1, _DYNAMIC
|
||
|
|
add x1, x1, #:lo12:_DYNAMIC
|
||
|
|
bl _relocate
|
||
|
|
cbnz x0, 0f
|
||
|
|
|
||
|
|
ldp x0, x1, [sp, #16]
|
||
|
|
bl efi_main
|
||
|
|
|
||
|
|
0: ldp x29, x30, [sp], #32
|
||
|
|
ret
|