530d68ba19
Signed-off-by: Peter Jones <pjones@redhat.com> Signed-off-by: Nigel Croxon <nigel.croxon@hp.com>
141 lines
4.0 KiB
ArmAsm
141 lines
4.0 KiB
ArmAsm
/*
|
|
* crt0-efi-aarch64.S - PE/COFF header for AArch64 EFI applications
|
|
*
|
|
* Copright (C) 2014 Linaro Ltd. <ard.biesheuvel@linaro.org>
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice and this list of conditions, without modification.
|
|
* 2. The name of the author may not be used to endorse or promote products
|
|
* derived from this software without specific prior written permission.
|
|
*
|
|
* Alternatively, this software may be distributed under the terms of the
|
|
* GNU General Public License as published by the Free Software Foundation;
|
|
* either version 2 of the License, or (at your option) any later version.
|
|
*/
|
|
|
|
.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 1 // NumberOfSymbols
|
|
.short section_table - optional_header // SizeOfOptionalHeader
|
|
.short 0x206 // Characteristics.
|
|
// IMAGE_FILE_DEBUG_STRIPPED |
|
|
// IMAGE_FILE_EXECUTABLE_IMAGE |
|
|
// IMAGE_FILE_LINE_NUMS_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 EFI_SUBSYSTEM // 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]
|
|
mov x2, x0
|
|
mov x3, x1
|
|
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
|