| /* |
| * crt0-efi-arm.S - PE/COFF header for ARM EFI applications |
| * |
| * Copright (C) 2014 Linaro Ltd. <ard.biesheuvel@linaro.org> |
| * |
| * SPDX-License-Identifier: GPL-2.0+ BSD-2-Clause |
| * |
| * This file is taken and modified from the gnu-efi project. |
| */ |
| |
| .section .text.head |
| |
| /* |
| * Magic "MZ" signature for PE/COFF |
| */ |
| .globl image_base |
| image_base: |
| .ascii "MZ" |
| .skip 58 /* 'MZ' + pad + offset == 64 */ |
| .long pe_header - image_base /* Offset to the PE header */ |
| pe_header: |
| .ascii "PE" |
| .short 0 |
| coff_header: |
| .short 0x1c2 /* Mixed ARM/Thumb */ |
| .short 2 /* nr_sections */ |
| .long 0 /* TimeDateStamp */ |
| .long 0 /* PointerToSymbolTable */ |
| .long 1 /* NumberOfSymbols */ |
| .short section_table - optional_header /* SizeOfOptionalHeader */ |
| /* |
| * Characteristics: IMAGE_FILE_32BIT_MACHINE | |
| * IMAGE_FILE_DEBUG_STRIPPED | IMAGE_FILE_EXECUTABLE_IMAGE | |
| * IMAGE_FILE_LINE_NUMS_STRIPPED |
| */ |
| .short 0x306 |
| optional_header: |
| .short 0x10b /* PE32+ format */ |
| .byte 0x02 /* MajorLinkerVersion */ |
| .byte 0x14 /* MinorLinkerVersion */ |
| .long _edata - _start /* SizeOfCode */ |
| .long 0 /* SizeOfInitializedData */ |
| .long 0 /* SizeOfUninitializedData */ |
| .long _start - image_base /* AddressOfEntryPoint */ |
| .long _start - image_base /* BaseOfCode */ |
| .long 0 /* BaseOfData */ |
| |
| extra_header_fields: |
| .long 0 /* image_base */ |
| .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 - image_base /* SizeOfImage */ |
| |
| /* |
| * Everything before the kernel image is considered part of the header |
| */ |
| .long _start - image_base /* SizeOfHeaders */ |
| .long 0 /* CheckSum */ |
| .short EFI_SUBSYSTEM /* Subsystem */ |
| .short 0 /* DllCharacteristics */ |
| .long 0 /* SizeOfStackReserve */ |
| .long 0 /* SizeOfStackCommit */ |
| .long 0 /* SizeOfHeapReserve */ |
| .long 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: |
| |
| /* |
| * 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 - image_base /* VirtualAddress */ |
| .long _edata - _start /* SizeOfRawData */ |
| .long _start - image_base /* 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: |
| stmfd sp!, {r0-r2, lr} |
| |
| mov r2, r0 |
| mov r3, r1 |
| adr r1, .L_DYNAMIC |
| ldr r0, [r1] |
| add r1, r0, r1 |
| adr r0, image_base |
| bl _relocate |
| teq r0, #0 |
| bne 0f |
| |
| ldmfd sp, {r0-r1} |
| bl efi_main |
| |
| 0: add sp, sp, #12 |
| ldr pc, [sp], #4 |
| |
| .L_DYNAMIC: |
| .word _DYNAMIC - . |
