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Fix remaining issues that prevented hex0 from running.

This commit is contained in:
Andrius Štikonas 2022-07-24 13:09:34 +01:00
parent c1df626dc6
commit 54e0c80f9f
3 changed files with 81 additions and 79 deletions
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42
amd64/Development/hex0.M1
View File

@ -31,8 +31,9 @@ DEFINE COPY_EAX_to_EDI 89C7
DEFINE COPY_RBX_to_R12 4989DC
DEFINE COPY_RBX_to_R13 4989DD
DEFINE COPY_RCX_to_RAX 4889C1
DEFINE COPY_RDX_to_RSP 4889E2
DEFINE COPY_RSP_to_RBP 4889E5
DEFINE COPY_RSP_to_RDX 4889E2
DEFINE COPY_RSP_to_R8 4989E0
DEFINE COPY_RBP_to_RSP 4889EC
DEFINE COPY_R8_to_RSP 4989E0
DEFINE COPY_RCX_to_R9 4989C9
@ -41,7 +42,8 @@ DEFINE COPY_R12_to_R8 4D89E0
DEFINE COPY_R13_to_RCX 4C89E9
DEFINE COPY_R13_to_R8 4D89E8
DEFINE COPY_R14_to_RCX 4C89F1
DEFINE COPY_R15_to_RCX 4889CF
DEFINE COPY_R15_to_RCX 4989CF
DEFINE COPY_R15_to_R9 4D89F9
DEFINE DEC_EBX FFCB
DEFINE JE8 74
DEFINE JGE8 7D
@ -57,7 +59,7 @@ DEFINE LOAD64_into_R13_from_Address_RSP_Immediate8 4C8B6C24
DEFINE LOAD64_into_R14_from_Address_RDX_Immediate8 4C8B72
DEFINE LOAD64_into_R14_from_Address_R14_Immediate32 4D8BB6
DEFINE LOAD8_AL_from_Address_RBX 8A03
DEFINE LOADI64_rel_RDX 488905
DEFINE LOADI64_rel_RDX 488B15
DEFINE POP_RAX 58
DEFINE POP_RBX 5B
DEFINE POP_RSI 5E
@ -70,8 +72,8 @@ DEFINE PUSH_RDX 52
DEFINE PUSH_RSI 56
DEFINE RET C3
DEFINE ROR_R9 49D1C9
DEFINE SHL_EBP_Immediate8 C1E5
DEFINE STOREI8_into_Address_RBX CB03
DEFINE SHL_EDI_Immediate8 C1E7
DEFINE STOREI8_into_Address_RBX C603
DEFINE SUBI8_RSP 4883EC
DEFINE SUBI8_AL 2C
DEFINE XOR_EBX_EBX 31DB
@ -89,15 +91,15 @@ DEFINE TEST_ESI_ESI 85F6
# Open Loaded Image protocol
PUSH_RAX # allocate stack for image
COPY_R8_to_RSP # arg3 = &image
COPY_RSP_to_R8 # arg3 = &image
LOADI64_rel_RDX %LOADED_IMAGE_PROTOCOL_8 # EFI_LOADED_IMAGE_PROTOCOL_GUID (last 64 bits)
PUSH_RDX # push last 64 bits onto stack
LOADI64_rel_RDX %LOADED_IMAGE_PROTOCOL # EFI_LOADED_IMAGE_PROTOCOL_GUID (first 64 bits)
PUSH_RDX # push first 64 bits onto stack
COPY_RDX_to_RSP # arg2 = &guid
COPY_RSP_to_RDX # arg2 = &guid
PUSH !1 # arg6 = EFI_OPEN_PROTOCOL_BY_HANDLE_PROTOCOL
PUSH !0 # arg5 = NULL
COPY_R8_to_RSP # arg4 = image_handle
COPY_RCX_to_R9 # arg4 = image_handle
# arg1 = ImageHandle (already set)
SUBI8_RSP !32 # allocate shadow stack space for UEFI function
CALL_R14 # system->boot->open_protocol(image_handle, &guid, &image, image_handle, 0, EFI_OPEN_PROTOCOL_BY_HANDLE_PROTOCOL)
@ -122,21 +124,21 @@ DEFINE TEST_ESI_ESI 85F6
CMPI8_AL !0x20 # if *options != ' '
JNE8 !loop_options2 # then jump
STOREI8_into_Address_RBX # *options = 0;
STOREI8_into_Address_RBX !0 # *options = 0;
ADDI8_RBX !2 # ++options
COPY_RBX_to_R13 # save output file
# Get root device
PUSH_RAX # allocate stack for rootfs
COPY_R8_to_RSP # arg3 = &rootfs
COPY_RSP_to_R8 # arg3 = &rootfs
LOADI64_rel_RDX %SIMPLE_FS_PROTOCOL_8 # EFI_SIMPLE_FILE_SYSTEM_PROTOCOL_GUID (last 64 bits)
PUSH_RDX # push last 64 bits onto stack
LOADI64_rel_RDX %SIMPLE_FS_PROTOCOL # EFI_SIMPLE_FILE_SYSTEM_PROTOCOL_GUID (first 64 bits)
PUSH_RDX # push first 64 bits onto stack
COPY_RDX_to_RSP # arg2 = &guid
COPY_RSP_to_RDX # arg2 = &guid
PUSH !1 # arg6 = EFI_OPEN_PROTOCOL_BY_HANDLE_PROTOCOL
PUSH !0 # arg5 = NULL
COPY_R8_to_RSP # arg4 = image_handle
COPY_R15_to_R9 # arg4 = image_handle
LOAD64_into_RCX_from_Address_RCX_Immediate8 !24 # arg1 = root_device = image->device
SUBI8_RSP !32 # allocate shadow stack space for UEFI function
CALL_R14 # system->boot->open_protocol(root_device, &guid, &rootfs, image_handle, 0, EFI_OPEN_PROTOCOL_BY_HANDLE_PROTOCOL)
@ -144,7 +146,7 @@ DEFINE TEST_ESI_ESI 85F6
# Get root directory
PUSH_RDX # allocate stack for rootdir
COPY_RDX_to_RSP # arg2 = &rootdir
COPY_RSP_to_RDX # arg2 = &rootdir
PUSH_RAX # allocate shadow stack space for UEFI function
PUSH_RAX # allocate shadow stack space for UEFI function
CALL_RCX_Immediate8 !8 # rootfs->open_volume(rootfs, &rootdir)
@ -154,7 +156,7 @@ DEFINE TEST_ESI_ESI 85F6
# Open file for writing
PUSH_RDX # allocate stack for fout
COPY_RDX_to_RSP # arg2 = &fout
COPY_RSP_to_RDX # arg2 = &fout
PUSH !0 # arg5 = 0
PUSH !7 # to get 0x8000000000000003 we set the rightmost 3 bits
POP_R9 # and then do right rotation by 1
@ -167,7 +169,7 @@ DEFINE TEST_ESI_ESI 85F6
# Open file for reading
PUSH_RDX # allocate stack for fin
COPY_RDX_to_RSP # arg2 = &fin
COPY_RSP_to_RDX # arg2 = &fin
PUSH !1 # arg5 = EFI_FILE_READ_ONLY
PUSH !1 # prepare to set arg4 to EFI_FILE_MODE_READ
POP_R9 # arg4 = EFI_FILE_MODE_READ
@ -207,7 +209,7 @@ DEFINE TEST_ESI_ESI 85F6
# process second byte of pair
:print
# update the sum and store in output
SHL_EBP_Immediate8 !4
SHL_EDI_Immediate8 !4
ADD_EAX_EDI
# flip the toggle
@ -283,9 +285,9 @@ DEFINE TEST_ESI_ESI 85F6
:write_byte
COPY_R13_to_RCX # arg1 = fout
PUSH !1 # size = 1
COPY_RDX_to_RSP # arg2 = &size
COPY_RSP_to_RDX # arg2 = &size
PUSH_RAX # allocate stack
COPY_R8_to_RSP # arg3 = &output
COPY_RSP_to_R8 # arg3 = &output
PUSH_RAX # allocate shadow stack space for UEFI function
PUSH_RAX # allocate shadow stack space for UEFI function
PUSH_RAX # allocate shadow stack space for UEFI function
@ -297,9 +299,9 @@ DEFINE TEST_ESI_ESI 85F6
:read_byte
COPY_R12_to_RCX # arg1 = fin
PUSH !1 # size = 1
COPY_RDX_to_RSP # arg2 = &size
COPY_RSP_to_RDX # arg2 = &size
PUSH_RSI # allocate stack
COPY_R8_to_RSP # arg3 = &input
COPY_RSP_to_R8 # arg3 = &input
PUSH_RAX # allocate shadow stack space for UEFI function
PUSH_RAX # allocate shadow stack space for UEFI function
PUSH_RAX # allocate shadow stack space for UEFI function

40
amd64/Development/hex0.hex2
View File

@ -23,21 +23,21 @@
# efi_main(void *image_handle, struct efi_system_table *system)
:_start
4889E5 ; COPY_RSP_to_RBP # save stack pointer
4889CF ; COPY_R15_to_RCX # save image_handle
4989CF ; COPY_R15_to_RCX # save image_handle
4C8B72 60 ; LOAD64_into_R14_from_Address_RDX_Immediate8 !96 # system->boot
4D8BB6 18010000 ; LOAD64_into_R14_from_Address_R14_Immediate32 %280 # system->boot->open_protocol
# Open Loaded Image protocol
50 ; PUSH_RAX # allocate stack for image
4989E0 ; COPY_R8_to_RSP # arg3 = &image
488905 %LOADED_IMAGE_PROTOCOL_8 ; LOADI64_rel_RDX !LOADED_IMAGE_PROTOCOL_8 # EFI_LOADED_IMAGE_PROTOCOL_GUID (last 64 bits)
4989E0 ; COPY_RSP_to_R8 # arg3 = &image
488B15 %LOADED_IMAGE_PROTOCOL_8 ; LOADI64_rel_RDX !LOADED_IMAGE_PROTOCOL_8 # EFI_LOADED_IMAGE_PROTOCOL_GUID (last 64 bits)
52 ; PUSH_RDX # push last 64 bits onto stack
488905 %LOADED_IMAGE_PROTOCOL ; LOADI64_rel_RDX !LOADED_IMAGE_PROTOCOL # EFI_LOADED_IMAGE_PROTOCOL_GUID (first 64 bits)
488B15 %LOADED_IMAGE_PROTOCOL ; LOADI64_rel_RDX !LOADED_IMAGE_PROTOCOL # EFI_LOADED_IMAGE_PROTOCOL_GUID (first 64 bits)
52 ; PUSH_RDX # push first 64 bits onto stack
4889E2 ; COPY_RDX_to_RSP # arg2 = &guid
4889E2 ; COPY_RSP_to_RDX # arg2 = &guid
6A 01 ; PUSH !1 # arg6 = EFI_OPEN_PROTOCOL_BY_HANDLE_PROTOCOL
6A 00 ; PUSH !0 # arg5 = NULL
4989E0 ; COPY_R8_to_RSP # arg4 = image_handle
4989C9 ; COPY_RCX_to_R9 # arg4 = image_handle
# arg1 = ImageHandle (already set)
4883EC 20 ; SUBI8_RSP !32 # allocate shadow stack space for UEFI function
41FFD6 ; CALL_R14 # system->boot->open_protocol(image_handle, &guid, &image, image_handle, 0, EFI_OPEN_PROTOCOL_BY_HANDLE_PROTOCOL)
@ -62,21 +62,21 @@
3C 20 ; CMPI8_AL !0x20 # if *options != ' '
75 !loop_options2 ; JNE8 !loop_options2 # then jump
CB03 ; STOREI8_into_Address_RBX # *options = 0;
C603 00 ; STOREI8_into_Address_RBX !0 # *options = 0;
4883C3 02 ; ADDI8_RBX !2 # ++options
4989DD ; COPY_RBX_to_R13 # save output file
# Get root device
50 ; PUSH_RAX # allocate stack for rootfs
4989E0 ; COPY_R8_to_RSP # arg3 = &rootfs
488905 %SIMPLE_FS_PROTOCOL_8 ; LOADI64_rel_RDX %SIMPLE_FS_PROTOCOL_8 # EFI_SIMPLE_FILE_SYSTEM_PROTOCOL_GUID (last 64 bits)
4989E0 ; COPY_RSP_to_R8 # arg3 = &rootfs
488B15 %SIMPLE_FS_PROTOCOL_8 ; LOADI64_rel_RDX %SIMPLE_FS_PROTOCOL_8 # EFI_SIMPLE_FILE_SYSTEM_PROTOCOL_GUID (last 64 bits)
52 ; PUSH_RDX # push last 64 bits onto stack
488905 %SIMPLE_FS_PROTOCOL ; LOADI64_rel_RDX %SIMPLE_FS_PROTOCOL # EFI_SIMPLE_FILE_SYSTEM_PROTOCOL_GUID (first 64 bits)
488B15 %SIMPLE_FS_PROTOCOL ; LOADI64_rel_RDX %SIMPLE_FS_PROTOCOL # EFI_SIMPLE_FILE_SYSTEM_PROTOCOL_GUID (first 64 bits)
52 ; PUSH_RDX # push first 64 bits onto stack
4889E2 ; COPY_RDX_to_RSP # arg2 = &guid
4889E2 ; COPY_RSP_to_RDX # arg2 = &guid
6A 01 ; PUSH !1 # arg6 = EFI_OPEN_PROTOCOL_BY_HANDLE_PROTOCOL
6A 00 ; PUSH !0 # arg5 = NULL
4989E0 ; COPY_R8_to_RSP # arg4 = image_handle
4D89F9 ; COPY_R15_to_R9 # arg4 = image_handle
488B49 18 ; LOAD64_into_RCX_from_Address_RCX_Immediate8 !24 # arg1 = root_device = image->device
4883EC 20 ; SUBI8_RSP !32 # allocate shadow stack space for UEFI function
41FFD6 ; CALL_R14 # system->boot->open_protocol(root_device, &guid, &rootfs, image_handle, 0, EFI_OPEN_PROTOCOL_BY_HANDLE_PROTOCOL)
@ -84,7 +84,7 @@
# Get root directory
52 ; PUSH_RDX # allocate stack for rootdir
4889E2 ; COPY_RDX_to_RSP # arg2 = &rootdir
4889E2 ; COPY_RSP_to_RDX # arg2 = &rootdir
50 ; PUSH_RAX # allocate shadow stack space for UEFI function
50 ; PUSH_RAX # allocate shadow stack space for UEFI function
FF51 08 ; CALL_RCX_Immediate8 !8 # rootfs->open_volume(rootfs, &rootdir)
@ -94,7 +94,7 @@
# Open file for writing
52 ; PUSH_RDX # allocate stack for fout
4889E2 ; COPY_RDX_to_RSP # arg2 = &fout
4889E2 ; COPY_RSP_to_RDX # arg2 = &fout
6A 00 ; PUSH !0 # arg5 = 0
6A 07 ; PUSH !7 # to get 0x8000000000000003 we set the rightmost 3 bits
4159 ; POP_R9 # and then do right rotation by 1
@ -107,7 +107,7 @@
# Open file for reading
52 ; PUSH_RDX # allocate stack for fin
4889E2 ; COPY_RDX_to_RSP # arg2 = &fin
4889E2 ; COPY_RSP_to_RDX # arg2 = &fin
6A 01 ; PUSH !1 # arg5 = EFI_FILE_READ_ONLY
6A 01 ; PUSH !1 # prepare to set arg4 to EFI_FILE_MODE_READ
4159 ; POP_R9 # arg4 = EFI_FILE_MODE_READ
@ -147,7 +147,7 @@
# process second byte of pair
:print
# update the sum and store in output
C1E5 04 ; SHL_EBP_Immediate8 !4
C1E7 04 ; SHL_EDI_Immediate8 !4
01F8 ; ADD_EAX_EDI
# flip the toggle
@ -223,9 +223,9 @@
:write_byte
4C89E9 ; COPY_R13_to_RCX # arg1 = fout
6A 01 ; PUSH !1 # size = 1
4889E2 ; COPY_RDX_to_RSP # arg2 = &size
4889E2 ; COPY_RSP_to_RDX # arg2 = &size
50 ; PUSH_RAX # allocate stack
4989E0 ; COPY_R8_to_RSP # arg3 = &output
4989E0 ; COPY_RSP_to_R8 # arg3 = &output
50 ; PUSH_RAX # allocate shadow stack space for UEFI function
50 ; PUSH_RAX # allocate shadow stack space for UEFI function
50 ; PUSH_RAX # allocate shadow stack space for UEFI function
@ -237,9 +237,9 @@
:read_byte
4C89E1 ; COPY_R12_to_RCX # arg1 = fin
6A 01 ; PUSH !1 # size = 1
4889E2 ; COPY_RDX_to_RSP # arg2 = &size
4889E2 ; COPY_RSP_to_RDX # arg2 = &size
56 ; PUSH_RSI # allocate stack
4989E0 ; COPY_R8_to_RSP # arg3 = &input
4989E0 ; COPY_RSP_to_R8 # arg3 = &input
50 ; PUSH_RAX # allocate shadow stack space for UEFI function
50 ; PUSH_RAX # allocate shadow stack space for UEFI function
50 ; PUSH_RAX # allocate shadow stack space for UEFI function

78
amd64/hex0.hex0
View File

@ -56,7 +56,7 @@ F0 00 # SizeOfOptionalHeader
# COFF header bits
0B 02 # Magic PE32+ (64 bit)
00 00 # Linker version
A2 01 00 00 # size of code
A3 01 00 00 # size of code
00 00 00 00 # sizeOfInitializedData
00 00 00 00 # SizeOfUninitializedData
00 10 00 00 # AddressOfEntryPoint
@ -136,9 +136,9 @@ A2 01 00 00 # size of code
# [0x148]
# Start of section headers
2E 74 65 78 74 00 00 00 ; Name: ".text"
A2 01 00 00 ; VirtualSize
A3 01 00 00 ; VirtualSize
00 10 00 00 ; VirtualAddress
A2 01 00 00 ; SizeOfRawData
A3 01 00 00 ; SizeOfRawData
70 01 00 00 ; PointerToRawData
00 00 00 00 ; PointerToRelocations
00 00 00 00 ; PointerToLinenumbers
@ -151,23 +151,23 @@ A2 01 00 00 ; SizeOfRawData
# efi_main(void *image_handle, struct efi_system_table *system)
# :_start
4889E5 ; COPY_RSP_to_RBP # save stack pointer
4889CF ; COPY_R15_to_RCX # save image_handle
4989CF ; COPY_R15_to_RCX # save image_handle
4C8B72 60 ; LOAD64_into_R14_from_Address_RDX_Immediate8 !96 # system->boot
4D8BB6 18010000 ; LOAD64_into_R14_from_Address_R14_Immediate32 %280 # system->boot->open_protocol
# Open Loaded Image protocol
50 ; PUSH_RAX # allocate stack for image
4989E0 ; COPY_R8_to_RSP # arg3 = &image
488905 6E010000 ; LOADI64_rel_RDX !LOADED_IMAGE_PROTOCOL_8 # EFI_LOADED_IMAGE_PROTOCOL_GUID (last 64 bits)
4989E0 ; COPY_RSP_to_R8 # arg3 = &image
488B15 6F010000 ; LOADI64_rel_RDX !LOADED_IMAGE_PROTOCOL_8 # EFI_LOADED_IMAGE_PROTOCOL_GUID (last 64 bits)
# [_start+0x1C]
52 ; PUSH_RDX # push last 64 bits onto stack
488905 5E010000 ; LOADI64_rel_RDX !LOADED_IMAGE_PROTOCOL # EFI_LOADED_IMAGE_PROTOCOL_GUID (first 64 bits)
488B15 5F010000 ; LOADI64_rel_RDX !LOADED_IMAGE_PROTOCOL # EFI_LOADED_IMAGE_PROTOCOL_GUID (first 64 bits)
# [_start+0x24]
52 ; PUSH_RDX # push first 64 bits onto stack
4889E2 ; COPY_RDX_to_RSP # arg2 = &guid
4889E2 ; COPY_RSP_to_RDX # arg2 = &guid
6A 01 ; PUSH !1 # arg6 = EFI_OPEN_PROTOCOL_BY_HANDLE_PROTOCOL
6A 00 ; PUSH !0 # arg5 = NULL
4989E0 ; COPY_R8_to_RSP # arg4 = image_handle
4989C9 ; COPY_RCX_to_R9 # arg4 = image_handle
# arg1 = ImageHandle (already set)
4883EC 20 ; SUBI8_RSP !32 # allocate shadow stack space for UEFI function
41FFD6 ; CALL_R14 # system->boot->open_protocol(image_handle, &guid, &image, image_handle, 0, EFI_OPEN_PROTOCOL_BY_HANDLE_PROTOCOL)
@ -192,21 +192,21 @@ A2 01 00 00 ; SizeOfRawData
3C 20 ; CMPI8_AL !0x20 # if *options != ' '
75 F6 ; JNE8 !loop_options2 # then jump
CB03 ; STOREI8_into_Address_RBX # *options = 0;
C603 00 ; STOREI8_into_Address_RBX !0 # *options = 0;
4883C3 02 ; ADDI8_RBX !2 # ++options
4989DD ; COPY_RBX_to_R13 # save output file
# Get root device [_start+0x66]
# Get root device [_start+0x67]
50 ; PUSH_RAX # allocate stack for rootfs
4989E0 ; COPY_R8_to_RSP # arg3 = &rootfs
488905 29010000 ; LOADI64_rel_RDX %SIMPLE_FS_PROTOCOL_8 # EFI_SIMPLE_FILE_SYSTEM_PROTOCOL_GUID (last 64 bits)
488B15 29010000 ; LOADI64_rel_RDX %SIMPLE_FS_PROTOCOL_8 # EFI_SIMPLE_FILE_SYSTEM_PROTOCOL_GUID (last 64 bits)
52 ; PUSH_RDX # push last 64 bits onto stack
488905 19010000 ; LOADI64_rel_RDX %SIMPLE_FS_PROTOCOL # EFI_SIMPLE_FILE_SYSTEM_PROTOCOL_GUID (first 64 bits)
488B15 19010000 ; LOADI64_rel_RDX %SIMPLE_FS_PROTOCOL # EFI_SIMPLE_FILE_SYSTEM_PROTOCOL_GUID (first 64 bits)
52 ; PUSH_RDX # push first 64 bits onto stack
4889E2 ; COPY_RDX_to_RSP # arg2 = &guid
4889E2 ; COPY_RSP_to_RDX # arg2 = &guid
6A 01 ; PUSH !1 # arg6 = EFI_OPEN_PROTOCOL_BY_HANDLE_PROTOCOL
6A 00 ; PUSH !0 # arg5 = NULL
4989E0 ; COPY_R8_to_RSP # arg4 = image_handle
4D89F9 ; COPY_R15_to_R9 # arg4 = image_handle
488B49 18 ; LOAD64_into_RCX_from_Address_RCX_Immediate8 !24 # arg1 = root_device = image->device
4883EC 20 ; SUBI8_RSP !32 # allocate shadow stack space for UEFI function
41FFD6 ; CALL_R14 # system->boot->open_protocol(root_device, &guid, &rootfs, image_handle, 0, EFI_OPEN_PROTOCOL_BY_HANDLE_PROTOCOL)
@ -214,7 +214,7 @@ A2 01 00 00 ; SizeOfRawData
# Get root directory
52 ; PUSH_RDX # allocate stack for rootdir
4889E2 ; COPY_RDX_to_RSP # arg2 = &rootdir
4889E2 ; COPY_RSP_to_RDX # arg2 = &rootdir
50 ; PUSH_RAX # allocate shadow stack space for UEFI function
50 ; PUSH_RAX # allocate shadow stack space for UEFI function
FF51 08 ; CALL_RCX_Immediate8 !8 # rootfs->open_volume(rootfs, &rootdir)
@ -224,7 +224,7 @@ A2 01 00 00 ; SizeOfRawData
# Open file for writing
52 ; PUSH_RDX # allocate stack for fout
4889E2 ; COPY_RDX_to_RSP # arg2 = &fout
4889E2 ; COPY_RSP_to_RDX # arg2 = &fout
6A 00 ; PUSH !0 # arg5 = 0
6A 07 ; PUSH !7 # to get 0x8000000000000003 we set the rightmost 3 bits
4159 ; POP_R9 # and then do right rotation by 1
@ -237,7 +237,7 @@ A2 01 00 00 ; SizeOfRawData
# Open file for reading
52 ; PUSH_RDX # allocate stack for fin
4889E2 ; COPY_RDX_to_RSP # arg2 = &fin
4889E2 ; COPY_RSP_to_RDX # arg2 = &fin
6A 01 ; PUSH !1 # arg5 = EFI_FILE_READ_ONLY
6A 01 ; PUSH !1 # prepare to set arg4 to EFI_FILE_MODE_READ
4159 ; POP_R9 # arg4 = EFI_FILE_MODE_READ
@ -254,7 +254,7 @@ A2 01 00 00 ; SizeOfRawData
# temp storage for the sum
31FF ; XOR_EDI_EDI # rdi = 0
# :loop # [_start+0xE1]
# :loop # [_start+0xE2]
# Read a byte
E8 6F000000 ; CALLI32 %read_byte
@ -275,9 +275,9 @@ A2 01 00 00 ; SizeOfRawData
EB E8 ; JMP8 !loop
# process second byte of pair
# :print [_start+0xF9]
# :print [_start+0xFA]
# update the sum and store in output
C1E5 04 ; SHL_EBP_Immediate8 !4
C1E7 04 ; SHL_EDI_Immediate8 !4
01F8 ; ADD_EAX_EDI
# flip the toggle
@ -287,7 +287,7 @@ A2 01 00 00 ; SizeOfRawData
EB DA ; JMP8 !loop
# :hex [_start+0x107]
# :hex [_start+0x108]
# Purge Comment Lines (#)
3C 23 ; CMPI8_AL !35
74 1E ; JE8 !purge_comment
@ -323,7 +323,7 @@ A2 01 00 00 ; SizeOfRawData
# The rest that remains needs to be ignored
EB 09 ; JMP8 !ascii_other
# :purge_comment [_start+0x129]
# :purge_comment [_start+0x12A]
# Read a byte
E8 27000000 ; CALLI32 %read_byte
@ -333,29 +333,29 @@ A2 01 00 00 ; SizeOfRawData
# Otherwise return -1
# :ascii_other [_start+0x132]
# :ascii_other [_start+0x133]
6A FF ; PUSH !-1
58 ; POP_RAX # return = -1
C3 ; RET
# :ascii_num [_start+0x136]
# :ascii_num [_start+0x137]
2C 30 ; SUBI8_AL !48
C3 ; RET
# :ascii_low [_start+0x139]
# :ascii_low [_start+0x13A]
2C 20 ; SUBI8_AL !32 # convert to uppercase
# :ascii_high [_start+0x13B]
# :ascii_high [_start+0x13C]
2C 37 ; SUBI8_AL !55
C3 ; RET
# Writes byte stored in al
# :write_byte [_start+0x13E]
# :write_byte [_start+0x13F]
4C89E9 ; COPY_R13_to_RCX # arg1 = fout
6A 01 ; PUSH !1 # size = 1
4889E2 ; COPY_RDX_to_RSP # arg2 = &size
4889E2 ; COPY_RSP_to_RDX # arg2 = &size
50 ; PUSH_RAX # allocate stack
4989E0 ; COPY_R8_to_RSP # arg3 = &output
4989E0 ; COPY_RSP_to_R8 # arg3 = &output
50 ; PUSH_RAX # allocate shadow stack space for UEFI function
50 ; PUSH_RAX # allocate shadow stack space for UEFI function
50 ; PUSH_RAX # allocate shadow stack space for UEFI function
@ -364,12 +364,12 @@ A2 01 00 00 ; SizeOfRawData
C3 ; RET # return
# :read_byte [_start+0x155]
# :read_byte [_start+0x156]
4C89E1 ; COPY_R12_to_RCX # arg1 = fin
6A 01 ; PUSH !1 # size = 1
4889E2 ; COPY_RDX_to_RSP # arg2 = &size
4889E2 ; COPY_RSP_to_RDX # arg2 = &size
56 ; PUSH_RSI # allocate stack
4989E0 ; COPY_R8_to_RSP # arg3 = &input
4989E0 ; COPY_RSP_to_R8 # arg3 = &input
50 ; PUSH_RAX # allocate shadow stack space for UEFI function
50 ; PUSH_RAX # allocate shadow stack space for UEFI function
50 ; PUSH_RAX # allocate shadow stack space for UEFI function
@ -386,7 +386,7 @@ A2 01 00 00 ; SizeOfRawData
C3 ; RET # return
# :terminate [_start+0x171]
# :terminate [_start+0x172]
53 ; PUSH_RBX # allocate stack
4C89E1 ; COPY_R12_to_RCX # arg1 = fin
FF51 10 ; CALL_RCX_Immediate8 !16 # fin->close()
@ -398,18 +398,18 @@ A2 01 00 00 ; SizeOfRawData
# Protocol GUIDs
# :LOADED_IMAGE_PROTOCOL [_start+0x182]
# :LOADED_IMAGE_PROTOCOL [_start+0x183]
A1 31 1B 5B ; %0x5b1b31a1
62 95 ; @0x9562
D2 11 ; @0x11d2
# :LOADED_IMAGE_PROTOCOL_8 [_start+0x18A]
# :LOADED_IMAGE_PROTOCOL_8 [_start+0x18B]
8E 3F 00 A0 C9 69 72 3B ; !0x8e !0x3f !0 !0xa0 !0xc9 !0x69 !0x72 !0x3b
# :SIMPLE_FS_PROTOCOL [_start+0x192]
# :SIMPLE_FS_PROTOCOL [_start+0x193]
22 5B 4E 96 ; %0x0964e5b22
59 64 ; @0x6459
D2 11 ; @0x11d2
# :SIMPLE_FS_PROTOCOL_8 [_start+0x19A]
# :SIMPLE_FS_PROTOCOL_8 [_start+0x19B]
8E 39 00 A0 C9 69 72 3B ; !0x8e !0x39 !0 !0xa0 !0xc9 !0x69 !0x72 !0x3b
# [0x1A2]
# [0x1A3]