Add catm.hex2
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@ -42,16 +42,16 @@ DEFINE LOAD64_into_R14_from_Address_RDX_Immediate8 4C8B72
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DEFINE LOAD64_rel_RCX 488B0D
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DEFINE LOAD64_rel_RDX 488B15
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DEFINE POP_RAX 58
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DEFINE PUSH 6A
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DEFINE PUSH_RAX 50
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DEFINE PUSH_RBX 53
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DEFINE PUSH_RDX 52
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DEFINE POP_RBX 5B
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DEFINE POP_RCX 59
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DEFINE POP_RSI 5E
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DEFINE POP_R8 4158
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DEFINE POP_R9 4159
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DEFINE POP_R15 415F
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DEFINE PUSH 6A
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DEFINE PUSH_RAX 50
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DEFINE PUSH_RBX 53
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DEFINE PUSH_RDX 52
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DEFINE RET C3
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DEFINE ROR_R9 49D1C9
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DEFINE STOREI8_into_Address_RBX C603
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@ -0,0 +1,356 @@
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# SPDX-FileCopyrightText: 2022 Andrius Štikonas <andrius@stikonas.eu>
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# SPDX-FileCopyrightText: 2019 Jeremiah Orians
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#
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# SPDX-License-Identifier: GPL-3.0-or-later
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# DOS MZ header
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4D 5A # Signature
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00 00 # Number of bytes in the last page.
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00 00 # Number of whole/partial pages
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00 00 # Number of entries in the relocation table.
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00 00 # Header size
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00 00 # Minimum allocation
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00 00 # Maximum allocation
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00 00 # Relocatable segment address for SS
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00 00 # Initial value for SP
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00 00 # Checksum (I don't think is looked at)
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00 00 # Initial value for IP (Seems ignored)
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00 00 # Relocatable segment address for CS (Seems ignored)
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00 00 # The (absolute) offset to the relocation table.
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00 00 # Value used for overlay management. If zero, this is the main executable
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00 00 00 00 00 00 00 00 # Reserved in PE
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00 00 # OEM identifier
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00 00 # OEM info
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00 00 00 00 00 00 00 00 00 00 # The required reserved 20 bytes of NULLS
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00 00 00 00 00 00 00 00 00 00
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40 00 00 00 # Starting address of the PE header
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# [0x40]
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# PE header
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50 45 00 00 # Signature "PE"
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64 86 # Machine
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01 00 # number of sections
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00 00 00 00 # Timestamp supposedly
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00 00 00 00 # PointerToSymbolTable
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00 00 00 00 # number of symbols
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F0 00 # SizeOfOptionalHeader
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00 00 # 'Characteristics'
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# [0x58]
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# COFF header bits
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0B 02 # Magic PE32+ (64 bit)
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00 00 # Linker version
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00 00 00 00 # size of code
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00 00 00 00 # sizeOfInitializedData
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00 00 00 00 # SizeOfUninitializedData
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00 10 00 00 # AddressOfEntryPoint
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00 10 00 00 # BaseOfCode
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00 00 00 80 01 00 00 00 # ImageBase
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01 00 00 00 # SectionAlignment
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01 00 00 00 # FileAlignment
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00 00 00 00 # OperatingSystemVersion
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00 00 00 00 # ImageVersion
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00 00 00 00 # SubsystemVersion
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00 00 00 00 # Win32VersionValue
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00 20 00 00 # SizeOfImage
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70 01 00 00 # SizeOfHeaders
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00 00 00 00 # CheckSum (isn't used at all)
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0A 00 # Subsystem
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00 00 # DllCharacteristics
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00 00 00 00 # SizeOfStackReserve
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00 00 00 00 # SizeOfStackCommit
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00 00 00 00 # SizeOfHeapReserve
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00 00 00 00 # SizeOfHeapCommit
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00 00 00 00 # LoaderFlags
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00 00 00 00 # NumberOfRvaAndSizes
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# [0xB8]
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# Data directories (has to be 16 entries always 16bytes per entry)
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00 00 00 00 # Export Table
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00 00 00 00 # Size of Export Table
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00 00 00 00 # Import Table
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10 00 00 00 # Size of Import Table
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00 00 00 00 # Resource Table
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00 00 00 00 # Size of Resource Table
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00 00 00 00 # Exception Table
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00 00 00 00 # Size of Exception Table
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00 00 00 00 # Certificate Table
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00 00 00 00 # Size of Certificate Table
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00 00 00 00 # Base Relocation Table
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00 00 00 00 # Size of Base Relocation Table
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00 00 00 00 # Debug Table
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00 00 00 00 # Size of Debug Table
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00 00 00 00 # Architecture Data Table
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00 00 00 00 # Size of Architecture Data Table
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00 00 00 00 # Global Pointer
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00 00 00 00 # NULL
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00 00 00 00 # TLS Table
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00 00 00 00 # Size of TLS Table
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00 00 00 00 # Load Config Table
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00 00 00 00 # Size of Load Config Table
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00 00 00 00 # Bound Import Table
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00 00 00 00 # Size of Bound Import Table
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00 00 00 00 # Import Address Table
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00 00 00 00 # Size of Import Address Table
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00 00 00 00 # Delay Import Descriptor Table
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00 00 00 00 # Size of Delay Import Descriptor Table
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00 00 00 00 # CLR Runtime header table
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00 00 00 00 # Size of CLR Runtime Header table
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00 00 00 00 00 00 00 00 # MUST BE NULL
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# no idea what it is yet
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00 00 00 00 00 00 00 00
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00 00 00 00 00 00 00 00
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# [0x148]
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# Start of section headers
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00 00 00 00 00 00 00 00 ; Name of the section (empty) but could set to ".text"
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%PE32_end>PE32_text ; VirtualSize
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00 10 00 00 ; VirtualAddress
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%PE32_end>PE32_text ; SizeOfRawData
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70 01 00 00 ; PointerToRawData
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00 00 00 00 ; PointerToRelocations
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00 00 00 00 ; PointerToLinenumbers
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00 00 ; NumberOfRelocations
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00 00 ; NumberOfLinenumbers
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00 00 00 00 ; 'Characteristics'
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# [0x170]
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:PE32_text
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# efi_main(void *image_handle, struct efi_system_table *system)
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:_start
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4889E5 ; COPY_RSP_to_RBP # save stack pointer
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4989CF ; COPY_RCX_to_R15 # save image_handle
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4C8B72 60 ; LOAD64_into_R14_from_Address_RDX_Immediate8 !96 # system->boot
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# Open Loaded Image protocol
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50 ; PUSH_RAX # allocate stack for image
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4989E0 ; COPY_RSP_to_R8 # arg3 = &image
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488B15 %LOADED_IMAGE_PROTOCOL_8 ; LOAD64_rel_RDX %LOADED_IMAGE_PROTOCOL_8 # EFI_LOADED_IMAGE_PROTOCOL_GUID (last 64 bits)
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52 ; PUSH_RDX # push last 64 bits onto stack
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488B15 %LOADED_IMAGE_PROTOCOL ; LOAD64_rel_RDX %LOADED_IMAGE_PROTOCOL # EFI_LOADED_IMAGE_PROTOCOL_GUID (first 64 bits)
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52 ; PUSH_RDX # push first 64 bits onto stack
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4889E2 ; COPY_RSP_to_RDX # arg2 = &guid
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6A 01 ; PUSH !1 # arg6 = EFI_OPEN_PROTOCOL_BY_HANDLE_PROTOCOL
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6A 00 ; PUSH !0 # arg5 = NULL
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4D89F9 ; COPY_R15_to_R9 # arg4 = image_handle
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4C89F9 ; COPY_R15_to_RCX # arg1 = image_handle
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4883EC 20 ; SUBI8_RSP !32 # allocate shadow stack space for UEFI function
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41FF96 18010000 ; CALL_R14_Immediate32 %280 # system->boot->open_protocol(image_handle, &guid, &image, image_handle, 0, EFI_OPEN_PROTOCOL_BY_HANDLE_PROTOCOL)
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488B4424 40 ; LOAD64_into_RAX_from_Address_RSP_Immediate8 !64 # get_image
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4889C7 ; COPY_RDI_to_RAX # save image
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# Get root file system
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50 ; PUSH_RAX # allocate stack for rootfs
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4989E0 ; COPY_RSP_to_R8 # arg3 = &rootfs
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488B15 %SIMPLE_FS_PROTOCOL_8 ; LOAD64_rel_RDX %SIMPLE_FS_PROTOCOL_8 # EFI_SIMPLE_FILE_SYSTEM_PROTOCOL_GUID (last 64 bits)
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52 ; PUSH_RDX # push last 64 bits onto stack
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488B15 %SIMPLE_FS_PROTOCOL ; LOAD64_rel_RDX %SIMPLE_FS_PROTOCOL # EFI_SIMPLE_FILE_SYSTEM_PROTOCOL_GUID (first 64 bits)
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52 ; PUSH_RDX # push first 64 bits onto stack
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4889E2 ; COPY_RSP_to_RDX # arg2 = &guid
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6A 01 ; PUSH !1 # arg6 = EFI_OPEN_PROTOCOL_BY_HANDLE_PROTOCOL
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6A 00 ; PUSH !0 # arg5 = NULL
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4D89F9 ; COPY_R15_to_R9 # arg4 = image_handle
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488B4F 18 ; LOAD64_into_RCX_from_Address_RDI_Immediate8 !24 # arg1 = root_device = image->device
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4883EC 20 ; SUBI8_RSP !32 # allocate shadow stack space for UEFI function
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41FF96 18010000 ; CALL_R14_Immediate32 %280 # system->boot->open_protocol(root_device, &guid, &rootfs, image_handle, 0, EFI_OPEN_PROTOCOL_BY_HANDLE_PROTOCOL)
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488B4C24 40 ; LOAD64_into_RCX_from_Address_RSP_Immediate8 !64 # get rootfs
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# Get root directory
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52 ; PUSH_RDX # allocate stack for rootdir
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4889E2 ; COPY_RSP_to_RDX # arg2 = &rootdir
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50 ; PUSH_RAX # allocate shadow stack space for UEFI function
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50 ; PUSH_RAX # allocate shadow stack space for UEFI function
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FF51 08 ; CALL_RCX_Immediate8 !8 # rootfs->open_volume(rootfs, &rootdir)
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58 ; POP_RAX # deallocate stack
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58 ; POP_RAX # deallocate stack
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58 ; POP_RAX # get rootdir
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488905 %rootdir ; STORE64_rel_RAX %rootdir # save rootdir
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# Push command line arguments onto stack
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488B5F 38 ; LOAD64_into_RBX_from_Address_RDI_Immediate8 !56 # options = image->load_options
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4889DA ; COPY_RBX_to_RDX # save beginning of load_options
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48035F 30 ; ADD_RBX_from_Address_RDI_Immediate8 !48 # go to the end of load_options
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6A 00 ; PUSH !0 # Save end of arguments (NULL) onto stack
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:loop_options
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4839D3 ; CMP_RBX_RDX # Check if we are done
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74 !loop_options_done ; JE8 !loop_options_done # We are done
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4883EB 02 ; SUBI8_RBX !2 # --options
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8A03 ; LOAD8_AL_from_Address_RBX # *options
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3C 20 ; CMPI8_AL !0x20 # if *options != ' '
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75 !loop_options ; JNE8 !loop_options # then continue looping
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C603 00 ; STOREI8_into_Address_RBX !0 # zero it
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4883C3 02 ; ADDI8_RBX !2 # ++options
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53 ; PUSH_RBX # push another argument onto stack
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EB !loop_options ; JMP8 !loop_options # next argument
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:loop_options_done
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4158 ; POP_R8 # get output file
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# Open file for writing
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52 ; PUSH_RDX # allocate stack for fout
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4889E2 ; COPY_RSP_to_RDX # arg2 = &fout
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6A 00 ; PUSH !0 # arg5 = 0
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6A 07 ; PUSH !7 # to get 0x8000000000000003 we set the rightmost 3 bits
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4159 ; POP_R9 # and then do right rotation by 1
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49D1C9 ; ROR_R9 # arg4 = EFI_FILE_MODE_CREATE| EFI_FILE_MODE_WRITE | EFI_FILE_MODE_READ
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488B0D %rootdir ; LOAD64_rel_RCX %rootdir # arg1 = rootdir
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4883EC 20 ; SUBI8_RSP !32 # allocate shadow stack space for UEFI function
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FF51 08 ; CALL_RCX_Immediate8 !8 # rootdir->open()
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4883C4 28 ; ADDI8_RSP !40 # deallocate stack
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415F ; POP_R15 # get fout
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48C7C2 00001000 ; ADDI32_to_RDX %0x100000 # Allocate 1MB
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E8 %allocate_pool ; CALLI32 %allocate_pool # Get memory pool
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4889C3 ; COPY_RAX_to_RBX # Save it
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:core
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4158 ; POP_R8 # Get the actual input name
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4983F8 00 ; CMP_R8_Immediate8 !0 # Check for null string
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74 !done ; JE8 !done # We are done if null string
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E8 %open_file ; CALLI32 %open_file # Open file as read only
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85C0 ; TEST_EAX_EAX # check if successfully opened
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75 !core ; JNE8 !core # Else go to another file
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4989F5 ; COPY_RSI_to_R13 # Protect fin
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:keep
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48C7C2 00001000 ; ADDI32_to_RDX %0x100000 # set the size of chars we want
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E8 %read ; CALLI32 %read # read them
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50 ; PUSH_RAX # Protect the number of bytes read
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4889C2 ; COPY_RAX_to_RDX # number of bytes to write
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E8 %write ; CALLI32 %write # write them
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58 ; POP_RAX # Get bytes read
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483D 00001000 ; CMPI32_RAX %0x100000 # Check if buffer was fully used
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74 !keep ; JE8 !keep # Keep looping if it was full
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4C89E9 ; COPY_R13_to_RCX # fin
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E8 %close_file ; CALLI32 %close_file # close file
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EB !core ; JMP8 !core # Move to next file
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:done
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4C89F9 ; COPY_R15_to_RCX # Get output file
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E8 %close_file ; CALLI32 %close_file # close it
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4889D9 ; COPY_RBX_to_RCX # Get buffer
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E8 %free_pool ; CALLI32 %free_pool # release it
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31C0 ; XOR_EAX_EAX # Exit code 0
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4889EC ; COPY_RBP_to_RSP # restore stack
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C3 ; RET # return to UEFI
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# r8: input file name
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# returns input file handle in rsi, status in rax
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:open_file
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# Open file for reading
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52 ; PUSH_RDX # allocate stack for fin
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4889E2 ; COPY_RSP_to_RDX # arg2 = &fin
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6A 01 ; PUSH !1 # arg5 = EFI_FILE_READ_ONLY
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6A 01 ; PUSH !1 # prepare to set arg4 to EFI_FILE_MODE_READ
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4159 ; POP_R9 # arg4 = EFI_FILE_MODE_READ
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488B0D %rootdir ; LOAD64_rel_RCX %rootdir # arg1 = rootdir
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4883EC 20 ; SUBI8_RSP !32 # allocate shadow stack space for UEFI function
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FF51 08 ; CALL_RCX_Immediate8 !8 # rootdir->open()
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4883C4 28 ; ADDI8_RSP !40 # deallocate stack
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5E ; POP_RSI # get fin
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C3 ; RET
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# rcx: file handle
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:close_file
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50 ; PUSH_RAX # allocate shadow stack space for UEFI function
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FF51 10 ; CALL_RCX_Immediate8 !16 # file_handle->close(file_handle)
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58 ; POP_RAX # deallocate stack
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C3 ; RET
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# rdx: number of bytes to allocate
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# r14: system->boot
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# returns pointer in rax
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:allocate_pool
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52 ; PUSH_RDX # allocate stack for pool pointer
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4989E0 ; COPY_RSP_to_R8 # arg3 = &pool
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6A 02 ; PUSH !2
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59 ; POP_RCX # arg1 = EFI_LOADER_DATA
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4883EC 18 ; SUBI8_RSP !24 # allocate shadow stack space for UEFI
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41FF56 40 ; CALL_R14_Immediate8 !64 # system->boot->allocate_pool(EFI_LOADER_DATA, 2048, &pool)
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4883C4 18 ; ADDI8_RSP !24 # deallocate stack
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58 ; POP_RAX # get pool
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C3 ; RET
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# rcx: memory pool
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# r14: system->boot
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:free_pool
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50 ; PUSH_RAX # allocate shadow stack space for UEFI function
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41FF56 48 ; CALL_R14_Immediate8 !72 # system->boot->free_pool(pool)
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58 ; POP_RAX # deallocate stack
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C3 ; RET
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# rdx: number of bytes to read
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# rbx: buffer
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# r13: input file handle
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# returns number of bytes read in rax
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:read
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4C89E9 ; COPY_R13_to_RCX # arg1 = fin
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52 ; PUSH_RDX # set size
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4889E2 ; COPY_RSP_to_RDX # arg2 = &size
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4989D8 ; COPY_RBX_to_R8 # arg3 = buffer
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4883EC 18 ; SUBI8_RSP !24 # allocate shadow stack space for UEFI
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FF51 20 ; CALL_RCX_Immediate8 !32 # fin->read()
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4883C4 18 ; ADDI8_RSP !24 # deallocate stack
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58 ; POP_RAX # save size to rax
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C3 ; RET
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# rdx: number of bytes to write
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# rbx: buffer
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# r14: output file handle
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# returns number of bytes written in rax
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:write
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4C89F9 ; COPY_R15_to_RCX # arg1 = fout
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52 ; PUSH_RDX # set size
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4889E2 ; COPY_RSP_to_RDX # arg2 = &size
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4989D8 ; COPY_RBX_to_R8 # arg3 = buffer
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4883EC 18 ; SUBI8_RSP !24 # allocate shadow stack space for UEFI
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FF51 28 ; CALL_RCX_Immediate8 !40 # fin->write()
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4883C4 18 ; ADDI8_RSP !24 # deallocate stack
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58 ; POP_RAX # save size to rax
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C3 ; RET
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# Protocol GUIDs
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:LOADED_IMAGE_PROTOCOL
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A1 31 1B 5B ; %0x5b1b31a1
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62 95 ; @0x9562
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D2 11 ; @0x11d2
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:LOADED_IMAGE_PROTOCOL_8
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8E 3F 00 A0 C9 69 72 3B ; !0x8e !0x3f !0 !0xa0 !0xc9 !0x69 !0x72 !0x3b
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:SIMPLE_FS_PROTOCOL
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22 5B 4E 96 ; %0x0964e5b22
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59 64 ; @0x6459
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D2 11 ; @0x11d2
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:SIMPLE_FS_PROTOCOL_8
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8E 39 00 A0 C9 69 72 3B ; !0x8e !0x39 !0 !0xa0 !0xc9 !0x69 !0x72 !0x3b
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:rootdir
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00000000 00000000
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:PE32_end
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@ -19,3 +19,10 @@ amd64\artifact\hex1.efi amd64\hex2.hex1 amd64\artifact\hex2-0.efi
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# to function as an effective linker for later stages of the bootstrap
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# This is a minimal version which will be used to bootstrap a much more advanced
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# version in a later stage.
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#################################
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# Phase-2b Build catm from hex2 #
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#################################
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amd64\artifact\hex2-0.efi amd64\catm.hex2 amd64\artifact\catm.efi
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# catm removes the need for cat or shell support for redirection by providing
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# equivalent functionality via catm output_file input1 input2 ... inputN
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