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ARM64 WIP: Fake PE header assembly

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Can probably be done cleaner, but at least UEFI boots it atm
This commit is contained in:
Fredrik Holmqvist 2021-08-25 22:58:00 +02:00
parent 2d01a5378a
commit 538bd986f9
1 changed files with 42 additions and 23 deletions
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65
src/system/boot/platform/efi/arch/arm64/crt0-efi-arm64.S
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@ -36,7 +36,7 @@ coff_header:
.long 0 // PointerToSymbolTable
.long 1 // NumberOfSymbols
.short section_table - optional_header // SizeOfOptionalHeader
.short 0x206 // Characteristics.
.short 0x20e // Characteristics.
// IMAGE_FILE_DEBUG_STRIPPED |
// IMAGE_FILE_EXECUTABLE_IMAGE |
// IMAGE_FILE_LINE_NUMS_STRIPPED
@ -44,16 +44,16 @@ optional_header:
.short 0x20b // PE32+ format
.byte 0x02 // MajorLinkerVersion
.byte 0x14 // MinorLinkerVersion
.long _data - _start // SizeOfCode
.long _data_size // SizeOfInitializedData
.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 0x1000 // SectionAlignment
.long 0x200 // FileAlignment
.long 32 // SectionAlignment
.long 8 // FileAlignment
.short 0 // MajorOperatingSystemVersion
.short 0 // MinorOperatingSystemVersion
.short 0 // MajorImageVersion
@ -74,7 +74,7 @@ extra_header_fields:
.quad 0 // SizeOfHeapReserve
.quad 0 // SizeOfHeapCommit
.long 0 // LoaderFlags
.long 0x6 // NumberOfRvaAndSizes
.long 16 // NumberOfRvaAndSizes
.quad 0 // ExportTable
.quad 0 // ImportTable
@ -82,32 +82,51 @@ extra_header_fields:
.quad 0 // ExceptionTable
.quad 0 // CertificationTable
.quad 0 // BaseRelocationTable
.quad 0 // Debug
.quad 0 // Architecture
.quad 0 // Global Ptr
.quad 0 // TLS Table
.quad 0 // Load Config Table
.quad 0 // Bound Import
.quad 0 // IAT
.quad 0 // Delay Import Descriptor
.quad 0 // CLR Runtime Header
.quad 0 // Reserved
// Section table
section_table:
.ascii ".text\0\0\0"
.long _data - _start // VirtualSize
/*
* 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
.long _edata - _start // VirtualSize
.long _start - ImageBase // VirtualAddress
.long _data - _start // SizeOfRawData
.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 0x60000020 // Characteristics (section flags)
.ascii ".data\0\0\0"
.long _data_size // VirtualSize
.long _data - ImageBase // VirtualAddress
.long _data_size // SizeOfRawData
.long _data - 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 0xc0000040 // Characteristics (section flags)
.long 0xe0500020 // Characteristics (section flags)
.align 12