| /* 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: |
| .ascii "MZ" |
| .skip 58 /* 'MZ' + pad + offset == 64 */ |
| .long pe_header - ImageBase /* Offset to the PE header */ |
| pe_header: |
| .ascii "PE" |
| .short 0 |
| coff_header: |
| .short 0xaa64 /* 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 0x20b /* 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 |
