1 1.1 jmcneill /* $NetBSD: crt0-efi-aarch64.S,v 1.1.1.2 2021/09/30 18:50:09 jmcneill Exp $ */ 2 1.1 jmcneill 3 1.1 jmcneill /* 4 1.1 jmcneill * crt0-efi-aarch64.S - PE/COFF header for AArch64 EFI applications 5 1.1 jmcneill * 6 1.1 jmcneill * Copright (C) 2014 Linaro Ltd. <ard.biesheuvel (at) linaro.org> 7 1.1 jmcneill * 8 1.1 jmcneill * Redistribution and use in source and binary forms, with or without 9 1.1 jmcneill * modification, are permitted provided that the following conditions 10 1.1 jmcneill * are met: 11 1.1 jmcneill * 1. Redistributions of source code must retain the above copyright 12 1.1 jmcneill * notice and this list of conditions, without modification. 13 1.1 jmcneill * 2. The name of the author may not be used to endorse or promote products 14 1.1 jmcneill * derived from this software without specific prior written permission. 15 1.1 jmcneill * 16 1.1 jmcneill * Alternatively, this software may be distributed under the terms of the 17 1.1 jmcneill * GNU General Public License as published by the Free Software Foundation; 18 1.1 jmcneill * either version 2 of the License, or (at your option) any later version. 19 1.1 jmcneill */ 20 1.1 jmcneill 21 1.1 jmcneill .section .text.head 22 1.1 jmcneill 23 1.1 jmcneill /* 24 1.1 jmcneill * Magic "MZ" signature for PE/COFF 25 1.1 jmcneill */ 26 1.1 jmcneill .globl ImageBase 27 1.1 jmcneill ImageBase: 28 1.1 jmcneill .ascii "MZ" 29 1.1 jmcneill .skip 58 // 'MZ' + pad + offset == 64 30 1.1 jmcneill .long pe_header - ImageBase // Offset to the PE header. 31 1.1 jmcneill pe_header: 32 1.1 jmcneill .ascii "PE" 33 1.1 jmcneill .short 0 34 1.1 jmcneill coff_header: 35 1.1 jmcneill .short 0xaa64 // AArch64 36 1.1 jmcneill .short 2 // nr_sections 37 1.1 jmcneill .long 0 // TimeDateStamp 38 1.1 jmcneill .long 0 // PointerToSymbolTable 39 1.1.1.2 jmcneill .long 0 // NumberOfSymbols 40 1.1 jmcneill .short section_table - optional_header // SizeOfOptionalHeader 41 1.1 jmcneill .short 0x206 // Characteristics. 42 1.1 jmcneill // IMAGE_FILE_DEBUG_STRIPPED | 43 1.1 jmcneill // IMAGE_FILE_EXECUTABLE_IMAGE | 44 1.1 jmcneill // IMAGE_FILE_LINE_NUMS_STRIPPED 45 1.1 jmcneill optional_header: 46 1.1 jmcneill .short 0x20b // PE32+ format 47 1.1 jmcneill .byte 0x02 // MajorLinkerVersion 48 1.1 jmcneill .byte 0x14 // MinorLinkerVersion 49 1.1 jmcneill .long _data - _start // SizeOfCode 50 1.1 jmcneill .long _data_size // SizeOfInitializedData 51 1.1 jmcneill .long 0 // SizeOfUninitializedData 52 1.1 jmcneill .long _start - ImageBase // AddressOfEntryPoint 53 1.1 jmcneill .long _start - ImageBase // BaseOfCode 54 1.1 jmcneill 55 1.1 jmcneill extra_header_fields: 56 1.1 jmcneill .quad 0 // ImageBase 57 1.1 jmcneill .long 0x1000 // SectionAlignment 58 1.1 jmcneill .long 0x200 // FileAlignment 59 1.1 jmcneill .short 0 // MajorOperatingSystemVersion 60 1.1 jmcneill .short 0 // MinorOperatingSystemVersion 61 1.1 jmcneill .short 0 // MajorImageVersion 62 1.1 jmcneill .short 0 // MinorImageVersion 63 1.1 jmcneill .short 0 // MajorSubsystemVersion 64 1.1 jmcneill .short 0 // MinorSubsystemVersion 65 1.1 jmcneill .long 0 // Win32VersionValue 66 1.1 jmcneill 67 1.1 jmcneill .long _edata - ImageBase // SizeOfImage 68 1.1 jmcneill 69 1.1 jmcneill // Everything before the kernel image is considered part of the header 70 1.1 jmcneill .long _start - ImageBase // SizeOfHeaders 71 1.1 jmcneill .long 0 // CheckSum 72 1.1 jmcneill .short EFI_SUBSYSTEM // Subsystem 73 1.1 jmcneill .short 0 // DllCharacteristics 74 1.1 jmcneill .quad 0 // SizeOfStackReserve 75 1.1 jmcneill .quad 0 // SizeOfStackCommit 76 1.1 jmcneill .quad 0 // SizeOfHeapReserve 77 1.1 jmcneill .quad 0 // SizeOfHeapCommit 78 1.1 jmcneill .long 0 // LoaderFlags 79 1.1 jmcneill .long 0x6 // NumberOfRvaAndSizes 80 1.1 jmcneill 81 1.1 jmcneill .quad 0 // ExportTable 82 1.1 jmcneill .quad 0 // ImportTable 83 1.1 jmcneill .quad 0 // ResourceTable 84 1.1 jmcneill .quad 0 // ExceptionTable 85 1.1 jmcneill .quad 0 // CertificationTable 86 1.1 jmcneill .quad 0 // BaseRelocationTable 87 1.1 jmcneill 88 1.1 jmcneill // Section table 89 1.1 jmcneill section_table: 90 1.1 jmcneill .ascii ".text\0\0\0" 91 1.1 jmcneill .long _data - _start // VirtualSize 92 1.1 jmcneill .long _start - ImageBase // VirtualAddress 93 1.1 jmcneill .long _data - _start // SizeOfRawData 94 1.1 jmcneill .long _start - ImageBase // PointerToRawData 95 1.1 jmcneill 96 1.1 jmcneill .long 0 // PointerToRelocations (0 for executables) 97 1.1 jmcneill .long 0 // PointerToLineNumbers (0 for executables) 98 1.1 jmcneill .short 0 // NumberOfRelocations (0 for executables) 99 1.1 jmcneill .short 0 // NumberOfLineNumbers (0 for executables) 100 1.1 jmcneill .long 0x60000020 // Characteristics (section flags) 101 1.1 jmcneill 102 1.1 jmcneill .ascii ".data\0\0\0" 103 1.1 jmcneill .long _data_size // VirtualSize 104 1.1 jmcneill .long _data - ImageBase // VirtualAddress 105 1.1 jmcneill .long _data_size // SizeOfRawData 106 1.1 jmcneill .long _data - ImageBase // PointerToRawData 107 1.1 jmcneill 108 1.1 jmcneill .long 0 // PointerToRelocations (0 for executables) 109 1.1 jmcneill .long 0 // PointerToLineNumbers (0 for executables) 110 1.1 jmcneill .short 0 // NumberOfRelocations (0 for executables) 111 1.1 jmcneill .short 0 // NumberOfLineNumbers (0 for executables) 112 1.1 jmcneill .long 0xc0000040 // Characteristics (section flags) 113 1.1 jmcneill 114 1.1 jmcneill .align 12 115 1.1 jmcneill _start: 116 1.1 jmcneill stp x29, x30, [sp, #-32]! 117 1.1 jmcneill mov x29, sp 118 1.1 jmcneill 119 1.1 jmcneill stp x0, x1, [sp, #16] 120 1.1 jmcneill mov x2, x0 121 1.1 jmcneill mov x3, x1 122 1.1 jmcneill adr x0, ImageBase 123 1.1 jmcneill adrp x1, _DYNAMIC 124 1.1 jmcneill add x1, x1, #:lo12:_DYNAMIC 125 1.1 jmcneill bl _relocate 126 1.1 jmcneill cbnz x0, 0f 127 1.1 jmcneill 128 1.1 jmcneill ldp x0, x1, [sp, #16] 129 1.1 jmcneill bl efi_main 130 1.1 jmcneill 131 1.1 jmcneill 0: ldp x29, x30, [sp], #32 132 1.1 jmcneill ret 133
Indexes created Wed Oct 15 07:09:58 GMT 2025