/*
|
* Copyright (C) 2013-2017 Linaro Ltd
|
* Authors: Roy Franz <roy.franz@linaro.org>
|
* Ard Biesheuvel <ard.biesheuvel@linaro.org>
|
*
|
* This program is free software; you can redistribute it and/or modify
|
* it under the terms of the GNU General Public License version 2 as
|
* published by the Free Software Foundation.
|
*/
|
|
#include <linux/pe.h>
|
#include <linux/sizes.h>
|
|
.macro __nop
|
#ifdef CONFIG_EFI_STUB
|
@ This is almost but not quite a NOP, since it does clobber the
|
@ condition flags. But it is the best we can do for EFI, since
|
@ PE/COFF expects the magic string "MZ" at offset 0, while the
|
@ ARM/Linux boot protocol expects an executable instruction
|
@ there.
|
.inst MZ_MAGIC | (0x1310 << 16) @ tstne r0, #0x4d000
|
#else
|
AR_CLASS( mov r0, r0 )
|
M_CLASS( nop.w )
|
#endif
|
.endm
|
|
.macro __EFI_HEADER
|
#ifdef CONFIG_EFI_STUB
|
.set start_offset, __efi_start - start
|
.org start + 0x3c
|
@
|
@ The PE header can be anywhere in the file, but for
|
@ simplicity we keep it together with the MSDOS header
|
@ The offset to the PE/COFF header needs to be at offset
|
@ 0x3C in the MSDOS header.
|
@ The only 2 fields of the MSDOS header that are used are this
|
@ PE/COFF offset, and the "MZ" bytes at offset 0x0.
|
@
|
.long pe_header - start @ Offset to the PE header.
|
|
pe_header:
|
.long PE_MAGIC
|
|
coff_header:
|
.short IMAGE_FILE_MACHINE_THUMB @ Machine
|
.short section_count @ NumberOfSections
|
.long 0 @ TimeDateStamp
|
.long 0 @ PointerToSymbolTable
|
.long 0 @ NumberOfSymbols
|
.short section_table - optional_header @ SizeOfOptionalHeader
|
.short IMAGE_FILE_32BIT_MACHINE | \
|
IMAGE_FILE_DEBUG_STRIPPED | \
|
IMAGE_FILE_EXECUTABLE_IMAGE | \
|
IMAGE_FILE_LINE_NUMS_STRIPPED @ Characteristics
|
|
#define __pecoff_code_size (__pecoff_data_start - __efi_start)
|
|
optional_header:
|
.short PE_OPT_MAGIC_PE32 @ PE32 format
|
.byte 0x02 @ MajorLinkerVersion
|
.byte 0x14 @ MinorLinkerVersion
|
.long __pecoff_code_size @ SizeOfCode
|
.long __pecoff_data_size @ SizeOfInitializedData
|
.long 0 @ SizeOfUninitializedData
|
.long efi_stub_entry - start @ AddressOfEntryPoint
|
.long start_offset @ BaseOfCode
|
.long __pecoff_data_start - start @ BaseOfData
|
|
extra_header_fields:
|
.long 0 @ ImageBase
|
.long SZ_4K @ SectionAlignment
|
.long SZ_512 @ FileAlignment
|
.short 0 @ MajorOsVersion
|
.short 0 @ MinorOsVersion
|
.short 0 @ MajorImageVersion
|
.short 0 @ MinorImageVersion
|
.short 0 @ MajorSubsystemVersion
|
.short 0 @ MinorSubsystemVersion
|
.long 0 @ Win32VersionValue
|
|
.long __pecoff_end - start @ SizeOfImage
|
.long start_offset @ SizeOfHeaders
|
.long 0 @ CheckSum
|
.short IMAGE_SUBSYSTEM_EFI_APPLICATION @ Subsystem
|
.short 0 @ DllCharacteristics
|
.long 0 @ SizeOfStackReserve
|
.long 0 @ SizeOfStackCommit
|
.long 0 @ SizeOfHeapReserve
|
.long 0 @ SizeOfHeapCommit
|
.long 0 @ LoaderFlags
|
.long (section_table - .) / 8 @ NumberOfRvaAndSizes
|
|
.quad 0 @ ExportTable
|
.quad 0 @ ImportTable
|
.quad 0 @ ResourceTable
|
.quad 0 @ ExceptionTable
|
.quad 0 @ CertificationTable
|
.quad 0 @ BaseRelocationTable
|
|
section_table:
|
.ascii ".text\0\0\0"
|
.long __pecoff_code_size @ VirtualSize
|
.long __efi_start @ VirtualAddress
|
.long __pecoff_code_size @ SizeOfRawData
|
.long __efi_start @ PointerToRawData
|
.long 0 @ PointerToRelocations
|
.long 0 @ PointerToLineNumbers
|
.short 0 @ NumberOfRelocations
|
.short 0 @ NumberOfLineNumbers
|
.long IMAGE_SCN_CNT_CODE | \
|
IMAGE_SCN_MEM_READ | \
|
IMAGE_SCN_MEM_EXECUTE @ Characteristics
|
|
.ascii ".data\0\0\0"
|
.long __pecoff_data_size @ VirtualSize
|
.long __pecoff_data_start - start @ VirtualAddress
|
.long __pecoff_data_rawsize @ SizeOfRawData
|
.long __pecoff_data_start - start @ PointerToRawData
|
.long 0 @ PointerToRelocations
|
.long 0 @ PointerToLineNumbers
|
.short 0 @ NumberOfRelocations
|
.short 0 @ NumberOfLineNumbers
|
.long IMAGE_SCN_CNT_INITIALIZED_DATA | \
|
IMAGE_SCN_MEM_READ | \
|
IMAGE_SCN_MEM_WRITE @ Characteristics
|
|
.set section_count, (. - section_table) / 40
|
|
.align 12
|
__efi_start:
|
#endif
|
.endm
|
