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hex1: Implement various improvements: 

* Make sure to close all protocols before exit.
 * Use more sophisticated command line argument processing
   that pushes command line arguments onto stack.
 * Switch to more readable M1 defines.
This commit is contained in:
Andrius Štikonas 2022-09-01 01:00:56 +01:00
parent 7020101bd7
commit 9b9ff9ac52
7 changed files with 1036 additions and 1002 deletions
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689
amd64/Development/hex1.M1
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@ -3,474 +3,487 @@
# #
# SPDX-License-Identifier: GPL-3.0-or-later # SPDX-License-Identifier: GPL-3.0-or-later
DEFINE ADDI32_to_R13 4981C5 DEFINE add_rbx, 4883C3
DEFINE ADDI8_RBX 4883C3 DEFINE add_rsp, 4883C4
DEFINE ADD_RCX_to_RAX 4801C8 DEFINE add_r13, 4981C5
DEFINE ADD_R14_to_RAX 4C01F0 DEFINE add_rax,rcx 4801C8
DEFINE ADDI8_RSP 4883C4 DEFINE add_rax,r14 4C01F0
DEFINE CALLI32 E8 DEFINE add_rbx,[rdi+BYTE] 48035F
DEFINE CALL_RCX_Immediate8 FF51 DEFINE call E8
DEFINE CALL_R14_Immediate8 41FF56 DEFINE call_[rcx+BYTE] FF51
DEFINE CALL_R14_Immediate32 41FF96 DEFINE call_[r14+BYTE] 41FF56
DEFINE CMPI8_AL 3C DEFINE call_[r14+DWORD] 41FF96
DEFINE CMPI32_RAX 483D DEFINE cmp_al, 3C
DEFINE CMPI32_R15 4981FF DEFINE cmp_rax, 483D
DEFINE COPY_RAX_to_R14 4989C6 DEFINE cmp_r15, 4981FF
DEFINE COPY_RBX_to_R12 4989DC DEFINE cmp_rbx,rdx 4839D3
DEFINE COPY_RBX_to_R13 4989DD DEFINE je 0F84
DEFINE COPY_RCX_to_RAX 4889C1 DEFINE je8 74
DEFINE COPY_RCX_to_R15 4989CF DEFINE jl 0F8C
DEFINE COPY_RSP_to_RBP 4889E5 DEFINE jmp E9
DEFINE COPY_RSP_to_RDX 4889E2 DEFINE jmp8 EB
DEFINE COPY_RSP_to_R8 4989E0 DEFINE jne 0F85
DEFINE COPY_RBP_to_RSP 4889EC DEFINE jne8 75
DEFINE COPY_RDI_to_RCX 4889F9 DEFINE lea_rdx,[rip+DWORD] 488D15
DEFINE COPY_R12_to_R8 4D89E0 DEFINE mov_dh, B6
DEFINE COPY_RBX_to_RCX 4889D9 DEFINE mov_rax, 48C7C0
DEFINE COPY_R13_to_R8 4D89E8 DEFINE mov_rdx, 48C7C2
DEFINE COPY_R14_to_RCX 4C89F1 DEFINE mov_r13, 49C7C5
DEFINE COPY_R15_to_RCX 4C89F9 DEFINE mov_r14, 49C7C6
DEFINE COPY_R15_to_R9 4D89F9 DEFINE mov_r15, 49C7C7
DEFINE JE32 0F84 DEFINE mov_rbp,rsp 4889E5
DEFINE JL32 0F8C DEFINE mov_rcx,rbx 4889D9
DEFINE JMP32 E9 DEFINE mov_rcx,rdi 4889F9
DEFINE JNE8 75 DEFINE mov_rcx,rsi 4889F1
DEFINE JNE32 0F85 DEFINE mov_rcx,r8 4C89C1
DEFINE LOAD32_Address_in_RAX_into_RAX 678B00 DEFINE mov_rcx,r9 4C89C9
DEFINE LOAD64_into_RBX_from_Address_RAX_Immediate8 488B58 DEFINE mov_rcx,r13 4C89E9
DEFINE LOAD64_into_RAX_from_Address_RSP_Immediate8 488B4424 DEFINE mov_rdx,rbx 4889DA
DEFINE LOAD64_into_RCX_from_Address_RSP_Immediate8 488B4C24 DEFINE mov_rdx,rsp 4889E2
DEFINE LOAD64_into_RCX_from_Address_RCX_Immediate8 488B49 DEFINE mov_rsp,rbp 4889EC
DEFINE LOAD64_into_RDI_from_Address_RSP_Immediate8 488B7C24 DEFINE mov_r8,rsp 4989E0
DEFINE LOAD64_into_RBX_from_Address_RSP_Immediate8 488B5C24 DEFINE mov_r8,r15 4D89F8
DEFINE LOAD64_into_R14_from_Address_RDX_Immediate8 4C8B72 DEFINE mov_r9,r15 4D89F9
DEFINE LOAD64_into_R14_from_Address_R14_Immediate32 4D8BB6 DEFINE mov_r13,rcx 4989CD
DEFINE LOAD8_AL_from_Address_RBX 8A03 DEFINE mov_r14,rax 4989C6
DEFINE LOADI8_DH B6 DEFINE mov_r15,rcx 4989CF
DEFINE LOADI32_RAX 48C7C0 DEFINE mov_al,[rbx] 8A03
DEFINE LOADI32_RDX 48C7C2 DEFINE mov_rax,[rax] 488B00
DEFINE LOADI32_R13 49C7C5 DEFINE mov_[rbx], C603
DEFINE LOADI32_R14 49C7C6 DEFINE mov_rbx,[rdi+BYTE] 488B5F
DEFINE LOADI32_R15 49C7C7 DEFINE mov_rcx,[rdi+BYTE] 488B4F
DEFINE LOAD64_rel_RCX 488B0D DEFINE mov_rcx,[rsp+BYTE] 488B4C24
DEFINE LOAD64_rel_RDX 488B15 DEFINE mov_rdi,[rsp+BYTE] 488B7C24
DEFINE LOAD64_rel_R14 4C8B35 DEFINE mov_r14,[rdx+BYTE] 4C8B72
DEFINE NOT_R15 49F7D7 DEFINE mov_[rax],r13 4C8928
DEFINE POP_RAX 58 DEFINE not_r15 49F7D7
DEFINE POP_RCX 59 DEFINE pop_rax 58
DEFINE POP_RSI 5E DEFINE pop_rbx 5B
DEFINE POP_R9 4159 DEFINE pop_rcx 59
DEFINE POP_R14 415E DEFINE pop_rdi 5F
DEFINE PUSH 6A DEFINE pop_rsi 5E
DEFINE PUSH_RAX 50 DEFINE pop_r8 4158
DEFINE PUSH_RBX 53 DEFINE pop_r9 4159
DEFINE PUSH_RDX 52 DEFINE pop_r13 415D
DEFINE PUSH_RSI 56 DEFINE pop_r14 415E
DEFINE RET C3 DEFINE pop_r15 415F
DEFINE ROR_R9 49D1C9 DEFINE push 6A
DEFINE SHL8_R14 49C1E6 DEFINE push_rax 50
DEFINE SHL8_RAX 48C1E0 DEFINE push_rbx 53
DEFINE STORE32_R13_to_Address_in_RAX 4C8928 DEFINE push_rdx 52
DEFINE STORE64_rel_R14 4C8935 DEFINE push_rsi 56
DEFINE STORE64_rel_RAX 488905 DEFINE push_r13 4155
DEFINE STOREI8_into_Address_RBX C603 DEFINE push_r14 4156
DEFINE SUBI8_RSP 4883EC DEFINE push_r15 4157
DEFINE SUBI8_from_RAX 4883E8 DEFINE ret C3
DEFINE SUB_R13_from_RAX 4C29E8 DEFINE ror_r9 49D1C9
DEFINE XOR_EDX_EDX 31D2 DEFINE shl_rax, 48C1E0
DEFINE TEST_ESI_ESI 85F6 DEFINE shl_r14, 49C1E6
DEFINE sub_rax, 4883E8
DEFINE sub_rbx, 4883EB
DEFINE sub_rsp, 4883EC
DEFINE sub_rax,r13 4C29E8
DEFINE test_esi,esi 85F6
DEFINE xor_edx,edx 31D2
DEFINE xor_esi,esi 31F6
DEFINE xor_r9,r9 4D31C9
# efi_main(void *image_handle, struct efi_system_table *system) # efi_main(void *image_handle, struct efi_system_table *system)
:_start :_start
COPY_RSP_to_RBP # save stack pointer mov_rbp,rsp # save stack pointer
COPY_RCX_to_R15 # save image_handle mov_r15,rcx # save image_handle
LOAD64_into_R14_from_Address_RDX_Immediate8 !96 # system->boot mov_r14,[rdx+BYTE] !96 # system->boot
STORE64_rel_R14 %SystemBoot # save system->boot
# Allocate pool for single-character label table
PUSH_RDX # allocate stack for table
COPY_RSP_to_R8 # arg3 = &table
XOR_EDX_EDX # zero rdx
LOADI8_DH !0x8 # arg2 = 256 * 8 = 2048 = 0x800
PUSH !2
POP_RCX # arg1 = EFI_LOADER_DATA
SUBI8_RSP !24 # allocate shadow stack space for UEFI
CALL_R14_Immediate8 !64 # system->boot->allocate_pool(EFI_LOADER_DATA, 2048, &table)
ADDI8_RSP !24 # deallocate stack
POP_RAX # get table
STORE64_rel_RAX %table # save table
# Open Loaded Image protocol # Open Loaded Image protocol
PUSH_RAX # allocate stack for image mov_r9,r15 # arg4 = image_handle
COPY_RSP_to_R8 # arg3 = &image lea_rdx,[rip+DWORD] %LOADED_IMAGE_PROTOCOL # guid = &LOADED_IMAGE_PROTOCOL
LOAD64_rel_RDX %LOADED_IMAGE_PROTOCOL_8 # EFI_LOADED_IMAGE_PROTOCOL_GUID (last 64 bits) mov_rcx,r9 # arg1 = image_handle
PUSH_RDX # push last 64 bits onto stack push_rax # allocate stack for image
LOAD64_rel_RDX %LOADED_IMAGE_PROTOCOL # EFI_LOADED_IMAGE_PROTOCOL_GUID (first 64 bits) mov_r8,rsp # arg3 = &image
PUSH_RDX # push first 64 bits onto stack push !1 # arg6 = EFI_OPEN_PROTOCOL_BY_HANDLE_PROTOCOL
COPY_RSP_to_RDX # arg2 = &guid push !0 # arg5 = NULL
PUSH !1 # arg6 = EFI_OPEN_PROTOCOL_BY_HANDLE_PROTOCOL sub_rsp, !32 # allocate shadow stack space for UEFI function
PUSH !0 # arg5 = NULL call_[r14+DWORD] %280 # system->boot->open_protocol(image_handle, &guid, &image, image_handle, 0, EFI_OPEN_PROTOCOL_BY_HANDLE_PROTOCOL)
COPY_R15_to_R9 # arg4 = image_handle mov_rdi,[rsp+BYTE] !48 # save image
COPY_R15_to_RCX # arg1 = image_handle
SUBI8_RSP !32 # allocate shadow stack space for UEFI function
CALL_R14_Immediate32 %280 # system->boot->open_protocol(image_handle, &guid, &image, image_handle, 0, EFI_OPEN_PROTOCOL_BY_HANDLE_PROTOCOL)
LOAD64_into_RAX_from_Address_RSP_Immediate8 !64 # get_image
COPY_RCX_to_RAX # save image
# Command line args
LOAD64_into_RBX_from_Address_RAX_Immediate8 !56 # options = image->load_options
:loop_options1 # Skip application name
ADDI8_RBX !2 # ++options
LOAD8_AL_from_Address_RBX # *options
CMPI8_AL !0x20 # if *options != ' '
JNE8 !loop_options1 # then jump
ADDI8_RBX !2 # ++options
COPY_RBX_to_R12 # save input file
:loop_options2 # Skip argv[1]
ADDI8_RBX !2 # ++options
LOAD8_AL_from_Address_RBX # *options
CMPI8_AL !0x20 # if *options != ' '
JNE8 !loop_options2 # then jump
STOREI8_into_Address_RBX !0 # *options = 0;
ADDI8_RBX !2 # ++options
COPY_RBX_to_R13 # save output file
# Get root file system # Get root file system
PUSH_RAX # allocate stack for rootfs mov_r9,r15 # arg4 = image_handle
COPY_RSP_to_R8 # arg3 = &rootfs lea_rdx,[rip+DWORD] %SIMPLE_FS_PROTOCOL # guid = &SIMPLE_FS_PROTOCOL
LOAD64_rel_RDX %SIMPLE_FS_PROTOCOL_8 # EFI_SIMPLE_FILE_SYSTEM_PROTOCOL_GUID (last 64 bits) mov_rcx,[rdi+BYTE] !24 # arg1 = root_device = image->device
PUSH_RDX # push last 64 bits onto stack mov_r13,rcx # save root_device
LOAD64_rel_RDX %SIMPLE_FS_PROTOCOL # EFI_SIMPLE_FILE_SYSTEM_PROTOCOL_GUID (first 64 bits) push_rax # allocate stack for rootfs
PUSH_RDX # push first 64 bits onto stack mov_r8,rsp # arg3 = &rootfs
COPY_RSP_to_RDX # arg2 = &guid push !1 # arg6 = EFI_OPEN_PROTOCOL_BY_HANDLE_PROTOCOL
PUSH !1 # arg6 = EFI_OPEN_PROTOCOL_BY_HANDLE_PROTOCOL push !0 # arg5 = NULL
PUSH !0 # arg5 = NULL sub_rsp, !32 # allocate shadow stack space for UEFI function
COPY_R15_to_R9 # arg4 = image_handle call_[r14+DWORD] %280 # system->boot->open_protocol(root_device, &guid, &rootfs, image_handle, 0, EFI_OPEN_PROTOCOL_BY_HANDLE_PROTOCOL)
LOAD64_into_RCX_from_Address_RCX_Immediate8 !24 # arg1 = root_device = image->device mov_rcx,[rsp+BYTE] !48 # get rootfs
SUBI8_RSP !32 # allocate shadow stack space for UEFI function
CALL_R14_Immediate32 %280 # system->boot->open_protocol(root_device, &guid, &rootfs, image_handle, 0, EFI_OPEN_PROTOCOL_BY_HANDLE_PROTOCOL)
LOAD64_into_RCX_from_Address_RSP_Immediate8 !64 # get rootfs
# Get root directory # Get root directory
PUSH_RDX # allocate stack for rootdir push_rax # allocate stack for rootdir
COPY_RSP_to_RDX # arg2 = &rootdir mov_rdx,rsp # arg2 = &rootdir
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 push_rax # allocate shadow stack space for UEFI function
CALL_RCX_Immediate8 !8 # rootfs->open_volume(rootfs, &rootdir) call_[rcx+BYTE] !8 # rootfs->open_volume(rootfs, &rootdir)
POP_RAX # deallocate stack pop_rax # deallocate stack
POP_RAX # deallocate stack pop_rax # deallocate stack
POP_R14 # save rootdir pop_rsi # get rootdir
# Push command line arguments onto stack
mov_rbx,[rdi+BYTE] !56 # options = image->load_options
mov_rdx,rbx # save beginning of load_options
add_rbx,[rdi+BYTE] !48 # go to the end of load_options
push !0 # Save end of arguments (NULL) onto stack
:loop_options
cmp_rbx,rdx # Check if we are done
je8 !loop_options_done # We are done
sub_rbx, !2 # --options
mov_al,[rbx] # *options
cmp_al, !0x20 # if *options != ' '
jne8 !loop_options # then continue looping
mov_[rbx], !0 # zero it
add_rbx, !2 # ++options
push_rbx # push another argument onto stack
jmp8 !loop_options # next argument
:loop_options_done
# Open file for reading # Open file for reading
PUSH_RDX # allocate stack for fin pop_r8 # arg3 = in
COPY_RSP_to_RDX # arg2 = &fin push_rdx # allocate stack for fin
PUSH !1 # arg5 = EFI_FILE_READ_ONLY mov_rdx,rsp # arg2 = &fin
PUSH !1 # prepare to set arg4 to EFI_FILE_MODE_READ push !1 # arg5 = EFI_FILE_READ_ONLY
POP_R9 # arg4 = EFI_FILE_MODE_READ push !1 # prepare to set arg4 to EFI_FILE_MODE_READ
COPY_R12_to_R8 # arg3 = in pop_r9 # arg4 = EFI_FILE_MODE_READ
COPY_R14_to_RCX # arg1 = rootdir mov_rcx,rsi # arg1 = rootdir
SUBI8_RSP !32 # allocate shadow stack space for UEFI function sub_rsp, !32 # allocate shadow stack space for UEFI function
CALL_RCX_Immediate8 !8 # rootdir->open() call_[rcx+BYTE] !8 # rootdir->open()
LOAD64_into_RDI_from_Address_RSP_Immediate8 !40 # get fin add_rsp, !40 # deallocate stack
pop_rdi # get fin
# Open file for writing # Open file for writing
PUSH_RDX # allocate stack for fout pop_r8 # arg3 = out
COPY_RSP_to_RDX # arg2 = &fout push_rdx # allocate stack for fout
PUSH !0 # arg5 = 0 mov_rdx,rsp # arg2 = &fout
PUSH !7 # to get 0x8000000000000003 we set the rightmost 3 bits push !0 # arg5 = 0
POP_R9 # and then do right rotation by 1 push !7 # to get 0x8000000000000003 we set the rightmost 3 bits
ROR_R9 # arg4 = EFI_FILE_MODE_CREATE| EFI_FILE_MODE_WRITE | EFI_FILE_MODE_READ pop_r9 # and then do right rotation by 1
COPY_R13_to_R8 # arg3 = out ror_r9 # arg4 = EFI_FILE_MODE_CREATE| EFI_FILE_MODE_WRITE | EFI_FILE_MODE_READ
COPY_R14_to_RCX # arg1 = rootdir mov_rcx,rsi # arg1 = rootdir
SUBI8_RSP !32 # allocate shadow stack space for UEFI function sub_rsp, !32 # allocate shadow stack space for UEFI function
CALL_RCX_Immediate8 !8 # rootdir->open() call_[rcx+BYTE] !8 # rootdir->open()
LOAD64_into_RBX_from_Address_RSP_Immediate8 !40 # get fout add_rsp, !40 # deallocate stack
pop_rbx # get fout
LOADI32_R15 %-1 # Our flag for byte processing # Save variables that are needed for cleanup
LOADI32_R14 %0 # temp storage for the sum push_r13 # save root_device
LOADI32_R13 %0 # Our starting IP push_r14 # save system->boot
CALLI32 %First_pass # Process it push_r15 # save image_handle
push_rsi # save rootdir
# Allocate pool for single-character label table
# pointer to table will be stored at the top of the stack
push_rdx # allocate stack for table
mov_r8,rsp # arg3 = &table
xor_edx,edx # zero rdx
mov_dh, !0x8 # arg2 = 256 * 8 = 2048 = 0x800
push !2
pop_rcx # arg1 = EFI_LOADER_DATA
sub_rsp, !24 # allocate shadow stack space for UEFI function
call_[r14+BYTE] !64 # system->boot->allocate_pool(EFI_LOADER_DATA, 2048, &table)
add_rsp, !24 # deallocate stack
mov_r15, %-1 # Our flag for byte processing
mov_r14, %0 # temp storage for the sum
mov_r13, %0 # Our starting IP
call %First_pass # Process it
# rewind input file # rewind input file
COPY_RDI_to_RCX # Using our input file mov_rcx,rdi # Using our input file
XOR_EDX_EDX # Offset Zero xor_edx,edx # Offset Zero
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 push_rax # allocate shadow stack space for UEFI function
CALL_RCX_Immediate8 !56 # fin->set_position(fin, 0) call_[rcx+BYTE] !56 # fin->set_position(fin, 0)
POP_RAX # deallocate stack pop_rax # deallocate stack
POP_RAX # deallocate stack pop_rax # deallocate stack
LOADI32_R15 %-1 # Our flag for byte processing mov_r15, %-1 # Our flag for byte processing
LOADI32_R14 %0 # temp storage for the sum mov_r14, %0 # temp storage for the sum
LOADI32_R13 %0 # Our starting IP mov_r13, %0 # Our starting IP
CALLI32 %Second_pass # Process it call %Second_pass # Process it
JMP32 %Done jmp %Done
:First_pass :First_pass
CALLI32 %Read_byte call %Read_byte
# Deal with EOF # Deal with EOF
CMPI32_RAX %-4 cmp_rax, %-4
JE32 %First_pass_done je %First_pass_done
# Check for : # Check for :
CMPI32_RAX %0x3a cmp_rax, %0x3a
JNE32 %First_pass_0 jne %First_pass_0
# Deal with label # Deal with label
CALLI32 %StoreLabel call %StoreLabel
:First_pass_0 :First_pass_0
# Check for % # Check for %
CMPI32_RAX %0x25 cmp_rax, %0x25
JE32 %First_pass_pointer je %First_pass_pointer
# Deal with everything else # Deal with everything else
CALLI32 %hex # Process our char call %hex # Process our char
# Deal with EOF # Deal with EOF
CMPI32_RAX %-4 cmp_rax, %-4
JE32 %First_pass_done je %First_pass_done
# deal with -1 values # deal with -1 values
CMPI32_RAX %0 cmp_rax, %0
JL32 %First_pass jl %First_pass
# deal with toggle # deal with toggle
CMPI32_R15 %0 cmp_r15, %0
JE32 %First_pass_1 je %First_pass_1
ADDI32_to_R13 %1 # Increment IP add_r13, %1 # Increment IP
:First_pass_1 :First_pass_1
NOT_R15 not_r15
JMP32 %First_pass jmp %First_pass
:First_pass_pointer :First_pass_pointer
# Deal with Pointer to label # Deal with Pointer to label
CALLI32 %Read_byte # Drop the char call %Read_byte # Drop the char
ADDI32_to_R13 %4 # Increment IP add_r13, %4 # Increment IP
JMP32 %First_pass # Loop again jmp %First_pass # Loop again
:First_pass_done :First_pass_done
RET ret
:hex :hex
# deal with EOF # deal with EOF
CMPI32_RAX %-4 cmp_rax, %-4
JE32 %EOF je %EOF
# deal with line comments starting with # # deal with line comments starting with #
CMPI32_RAX %0x23 cmp_rax, %0x23
JE32 %ascii_comment je %ascii_comment
# deal with line comments starting with ; # deal with line comments starting with ;
CMPI32_RAX %0x3b cmp_rax, %0x3b
JE32 %ascii_comment je %ascii_comment
# deal all ascii less than 0 # deal all ascii less than 0
CMPI32_RAX %0x30 cmp_rax, %0x30
JL32 %ascii_other jl %ascii_other
# deal with 0-9 # deal with 0-9
CMPI32_RAX %0x3a cmp_rax, %0x3a
JL32 %ascii_num jl %ascii_num
# deal with all ascii less than A # deal with all ascii less than A
CMPI32_RAX %0x41 cmp_rax, %0x41
JL32 %ascii_other jl %ascii_other
# deal with A-F # deal with A-F
CMPI32_RAX %0x47 cmp_rax, %0x47
JL32 %ascii_high jl %ascii_high
# deal with all ascii less than a # deal with all ascii less than a
CMPI32_RAX %0x61 cmp_rax, %0x61
JL32 %ascii_other jl %ascii_other
# deal with a-f # deal with a-f
CMPI32_RAX %0x67 cmp_rax, %0x67
JL32 %ascii_low jl %ascii_low
# The rest that remains needs to be ignored # The rest that remains needs to be ignored
JMP32 %ascii_other jmp %ascii_other
:Second_pass :Second_pass
CALLI32 %Read_byte call %Read_byte
# Deal with EOF # Deal with EOF
CMPI32_RAX %-4 cmp_rax, %-4
JE32 %Second_pass_done je %Second_pass_done
# Simply drop the label # Simply drop the label
CMPI32_RAX %0x3a cmp_rax, %0x3a
JNE32 %Second_pass_0 jne %Second_pass_0
CALLI32 %Read_byte call %Read_byte
JMP32 %Second_pass jmp %Second_pass
:Second_pass_0 :Second_pass_0
# Deal with % pointer # Deal with % pointer
CMPI32_RAX %0x25 cmp_rax, %0x25
JNE32 %Second_pass_1 jne %Second_pass_1
CALLI32 %StorePointer call %StorePointer
JMP32 %Second_pass jmp %Second_pass
:Second_pass_1 :Second_pass_1
# Deal with everything else # Deal with everything else
CALLI32 %hex # Process our char call %hex # Process our char
# Deal with EOF # Deal with EOF
CMPI32_RAX %-4 cmp_rax, %-4
JE32 %Second_pass_done je %Second_pass_done
# deal with -1 values # deal with -1 values
CMPI32_RAX %0 cmp_rax, %0
JL32 %Second_pass jl %Second_pass
# deal with toggle # deal with toggle
CMPI32_R15 %0 cmp_r15, %0
JE32 %print je %print
# process first byte of pair # process first byte of pair
COPY_RAX_to_R14 mov_r14,rax
LOADI32_R15 %0 mov_r15, %0
JMP32 %Second_pass jmp %Second_pass
:Second_pass_done :Second_pass_done
RET
:EOF :EOF
RET ret
:ascii_num :ascii_num
SUBI8_from_RAX !0x30 sub_rax, !0x30
RET ret
:ascii_low :ascii_low
SUBI8_from_RAX !0x57 sub_rax, !0x57
RET ret
:ascii_high :ascii_high
SUBI8_from_RAX !0x37 sub_rax, !0x37
RET ret
:ascii_other :ascii_other
LOADI32_RAX %-1 mov_rax, %-1
RET ret
:ascii_comment :ascii_comment
CALLI32 %Read_byte call %Read_byte
CMPI32_RAX %0xd cmp_rax, %0xd
JE32 %ascii_comment_cr je %ascii_comment_cr
CMPI32_RAX %0xa cmp_rax, %0xa
JNE32 %ascii_comment jne %ascii_comment
:ascii_comment_cr :ascii_comment_cr
LOADI32_RAX %-1 mov_rax, %-1
RET ret
# process second byte of pair # process second byte of pair
:print :print
# update the sum and store in output # update the sum and store in output
SHL8_R14 !4 shl_r14, !4
ADD_R14_to_RAX add_rax,r14
# flip the toggle # flip the toggle
NOT_R15 # R15 = -1 not_r15 # R15 = -1
LOADI32_RDX %1 # set the size of chars we want mov_rdx, %1 # set the size of chars we want
CALLI32 %print_chars call %print_chars
ADDI32_to_R13 %1 # Increment IP add_r13, %1 # Increment IP
JMP32 %Second_pass jmp %Second_pass
:Read_byte :Read_byte
COPY_RDI_to_RCX # arg1 = fin mov_rcx,rdi # arg1 = fin
PUSH !1 # size = 1 push !1 # size = 1
COPY_RSP_to_RDX # arg2 = &size mov_rdx,rsp # arg2 = &size
PUSH_RSI # allocate stack xor_esi,esi # zero rsi
COPY_RSP_to_R8 # arg3 = &input push_rsi # allocate stack
PUSH_RAX # allocate shadow stack space for UEFI function mov_r8,rsp # 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 push_rax # allocate shadow stack space for UEFI function
CALL_RCX_Immediate8 !32 # fin->read() push_rax # allocate shadow stack space for UEFI function
POP_RAX # deallocate stack call_[rcx+BYTE] !32 # fin->read()
POP_RAX # deallocate stack pop_rax # deallocate stack
POP_RAX # deallocate stack pop_rax # deallocate stack
POP_RAX # save input to rax pop_rax # deallocate stack
POP_RSI # save size to rsi pop_rax # save input to rax
pop_rsi # save size to rsi
# If the file ended (0 bytes read) return EOF # If the file ended (0 bytes read) return EOF
TEST_ESI_ESI # if size = 0 test_esi,esi # if size = 0
JNE8 !Read_byte_1 jne8 !Read_byte_1
LOADI32_RAX %-4 # Put EOF in rax mov_rax, %-4 # Put EOF in rax
:Read_byte_1 :Read_byte_1
RET # return ret # return
# Writes bytes stored in rax # Writes bytes stored in rax
:print_chars :print_chars
COPY_RBX_to_RCX # arg1 = fout mov_rcx,rbx # arg1 = fout
PUSH_RDX # set size push_rdx # set size
COPY_RSP_to_RDX # arg2 = &size mov_rdx,rsp # arg2 = &size
PUSH_RAX # allocate stack push_rax # allocate stack
COPY_RSP_to_R8 # arg3 = &output mov_r8,rsp # 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 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
CALL_RCX_Immediate8 !40 # fout->write() call_[rcx+BYTE] !40 # fout->write()
ADDI8_RSP !40 # deallocate stack add_rsp, !40 # deallocate stack
RET # return ret # return
:Get_table_target :Get_table_target
CALLI32 %Read_byte # Get single char label call %Read_byte # Get single char label
SHL8_RAX !3 # Each label in table takes 8 bytes to store shl_rax, !3 # Each label in table takes 8 bytes to store
LOAD64_rel_RCX %table # Get table mov_rcx,[rsp+BYTE] !24 # Get table
ADD_RCX_to_RAX # Calculate offset add_rax,rcx # Calculate offset
RET ret
:StoreLabel :StoreLabel
CALLI32 %Get_table_target call %Get_table_target
STORE32_R13_to_Address_in_RAX # Write out pointer to table mov_[rax],r13 # Write out pointer to table
RET ret
:StorePointer :StorePointer
ADDI32_to_R13 %4 # Increment IP add_r13, %4 # Increment IP
CALLI32 %Get_table_target # Get address of pointer call %Get_table_target # Get address of pointer
LOAD32_Address_in_RAX_into_RAX # Get pointer mov_rax,[rax] # Get pointer
SUB_R13_from_RAX # target - ip sub_rax,r13 # target - ip
LOADI32_RDX %4 # set the size of chars we want mov_rdx, %4 # set the size of chars we want
CALLI32 %print_chars call %print_chars
RET ret
:Done :Done
pop_rcx # restore table
pop_rsi # restore rootdir
pop_r15 # restore image_handle
pop_r14 # restore system->boot
pop_r13 # restore root_device
# Free pool # Free pool
LOAD64_rel_RCX %table # arg1 = table # arg1 = table
PUSH_RAX # allocate shadow stack space for UEFI function push_rax # allocate shadow stack space for UEFI function
LOAD64_rel_R14 %SystemBoot # get system->boot call_[r14+BYTE] !72 # system->boot->free_pool(table)
CALL_R14_Immediate8 !72 # system->boot->free_pool(table)
COPY_RDI_to_RCX # arg1 = fin mov_rcx,rdi # arg1 = fin
CALL_RCX_Immediate8 !16 # fin->close() call_[rcx+BYTE] !16 # fin->close()
COPY_RBX_to_RCX # arg1 = fout mov_rcx,rbx # arg1 = fout
CALL_RCX_Immediate8 !16 # fout->close() call_[rcx+BYTE] !16 # fout->close()
mov_rcx,rsi # arg1 = rootdir
call_[rcx+BYTE] !16 # rootdir->close()
COPY_RBP_to_RSP # restore stack mov_r8,r15 # arg3 = image_handle
RET # return to UEFI lea_rdx,[rip+DWORD] %SIMPLE_FS_PROTOCOL # guid = &SIMPLE_FS_PROTOCOL
mov_rcx,r13 # arg1 = root_device
xor_r9,r9 # arg4 = NULL
sub_rsp, !32 # allocate shadow stack space for UEFI function
call_[r14+DWORD] %288 # system->boot->close_protocol(root_device, &guid, image_handle, 0)
mov_r8,r15 # arg3 = image_handle
lea_rdx,[rip+DWORD] %LOADED_IMAGE_PROTOCOL # guid = &LOADED_IMAGE_PROTOCOL
mov_rcx,r8 # arg1 = image_handle
xor_r9,r9 # arg4 = NULL
call_[r14+DWORD] %288 # system->boot->close_protocol(image_handle, &guid, image_handle, 0)
mov_rsp,rbp # restore stack
ret # return to UEFI
# Protocol GUIDs # Protocol GUIDs
:LOADED_IMAGE_PROTOCOL :LOADED_IMAGE_PROTOCOL
%0x5b1b31a1 %0x5b1b31a1
@0x9562 @0x9562
@0x11d2 @0x11d2
:LOADED_IMAGE_PROTOCOL_8
!0x8e !0x3f !0 !0xa0 !0xc9 !0x69 !0x72 !0x3b !0x8e !0x3f !0 !0xa0 !0xc9 !0x69 !0x72 !0x3b
:SIMPLE_FS_PROTOCOL :SIMPLE_FS_PROTOCOL
%0x0964e5b22 %0x0964e5b22
@0x6459 @0x6459
@0x11d2 @0x11d2
:SIMPLE_FS_PROTOCOL_8
!0x8e !0x39 !0 !0xa0 !0xc9 !0x69 !0x72 !0x3b !0x8e !0x39 !0 !0xa0 !0xc9 !0x69 !0x72 !0x3b
:table
%0 %0
:SystemBoot
%0 %0
:PE32_end :PE32_end

219
amd64/Development/hex1.S
View File

@ -3,6 +3,9 @@
# #
# SPDX-License-Identifier: GPL-3.0-or-later # SPDX-License-Identifier: GPL-3.0-or-later
# Some of the functions are deliberately inlined at the slight expense of
# binary size to avoid tricky jump calculations in hex0 code.
.global _start .global _start
.text .text
@ -11,9 +14,95 @@ _start:
mov rbp, rsp # save stack pointer mov rbp, rsp # save stack pointer
mov r15, rcx # save image_handle mov r15, rcx # save image_handle
mov r14, [rdx+96] # system->boot mov r14, [rdx+96] # system->boot
mov [rip+SystemBoot], r14 # save system->boot
# Open Loaded Image protocol
mov r9, r15 # arg4 = image_handle
lea rdx, [rip+LOADED_IMAGE_PROTOCOL] # guid = &LOADED_IMAGE_PROTOCOL
mov rcx, r9 # arg1 = image_handle
push rax # allocate stack for image
mov r8, rsp # arg3 = &image
push 1 # arg6 = EFI_OPEN_PROTOCOL_BY_HANDLE_PROTOCOL
push 0 # arg5 = NULL
sub rsp, 32 # allocate shadow stack space for UEFI function
call [r14+280] # system->boot->open_protocol(image_handle, &guid, &image, image_handle, 0, EFI_OPEN_PROTOCOL_BY_HANDLE_PROTOCOL)
mov rdi, [rsp+48] # save image
# Get root file system
mov r9, r15 # arg4 = image_handle
lea rdx, [rip+SIMPLE_FS_PROTOCOL] # guid = &SIMPLE_FS_PROTOCOL
mov rcx, [rdi+24] # arg1 = root_device = image->device
mov r13, rcx # save root_device
push rax # allocate stack for rootfs
mov r8, rsp # arg3 = &rootfs
push 1 # arg6 = EFI_OPEN_PROTOCOL_BY_HANDLE_PROTOCOL
push 0 # arg5 = NULL
sub rsp, 32 # allocate shadow stack space for UEFI function
call [r14+280] # system->boot->open_protocol(root_device, &guid, &rootfs, image_handle, 0, EFI_OPEN_PROTOCOL_BY_HANDLE_PROTOCOL)
mov rcx, [rsp+48] # get rootfs
# Get root directory
push rax # allocate stack for rootdir
mov rdx, rsp # arg2 = &rootdir
push rax # allocate shadow stack space for UEFI function
push rax # allocate shadow stack space for UEFI function
call [rcx+8] # rootfs->open_volume(rootfs, &rootdir)
pop rax # deallocate stack
pop rax # deallocate stack
pop rsi # get rootdir
# Push command line arguments onto stack
mov rbx, [rdi+56] # options = image->load_options
mov rdx, rbx # save beginning of load_options
add rbx, [rdi+48] # go to the end of load_options
push 0 # Save end of arguments (NULL) onto stack
loop_options:
cmp rbx, rdx # Check if we are done
je loop_options_done # We are done
sub rbx, 2 # --options
mov al, [rbx] # *options
cmp al, 0x20 # if *options != ' '
jne loop_options # then continue looping
mov BYTE PTR [rbx], 0 # zero it
add rbx, 2 # ++options
push rbx # push another argument onto stack
jmp loop_options # next argument
loop_options_done:
# Open file for reading
pop r8 # arg3 = in
push rdx # allocate stack for fin
mov rdx, rsp # 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
mov rcx, rsi # arg1 = rootdir
sub rsp, 32 # allocate shadow stack space for UEFI function
call [rcx+8] # rootdir->open()
add rsp, 40 # deallocate stack
pop rdi # get fin
# Open file for writing
pop r8 # arg3 = out
push rdx # allocate stack for fout
mov rdx, rsp # 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
ror r9 # arg4 = EFI_FILE_MODE_CREATE| EFI_FILE_MODE_WRITE | EFI_FILE_MODE_READ
mov rcx, rsi # arg1 = rootdir
sub rsp, 32 # allocate shadow stack space for UEFI function
call [rcx+8] # rootdir->open()
add rsp, 40 # deallocate stack
pop rbx # get fout
# Save variables that are needed for cleanup
push r13 # save root_device
push r14 # save system->boot
push r15 # save image_handle
push rsi # save rootdir
# Allocate pool for single-character label table # Allocate pool for single-character label table
# pointer to table will be stored at the top of the stack
push rdx # allocate stack for table push rdx # allocate stack for table
mov r8, rsp # arg3 = &table mov r8, rsp # arg3 = &table
xor edx, edx # zero rdx xor edx, edx # zero rdx
@ -23,98 +112,6 @@ _start:
sub rsp, 24 # allocate shadow stack space for UEFI sub rsp, 24 # allocate shadow stack space for UEFI
call [r14+64] # system->boot->allocate_pool(EFI_LOADER_DATA, 2048, &table) call [r14+64] # system->boot->allocate_pool(EFI_LOADER_DATA, 2048, &table)
add rsp, 24 # deallocate stack add rsp, 24 # deallocate stack
pop rax # get table
mov [rip+table], rax # save table
# Open Loaded Image protocol
push rax # allocate stack for image
mov r8, rsp # arg3 = &image
mov rdx, [rip+LOADED_IMAGE_PROTOCOL+8] # EFI_LOADED_IMAGE_PROTOCOL_GUID (last 64 bits)
push rdx # push last 64 bits onto stack
mov rdx, [rip+LOADED_IMAGE_PROTOCOL] # EFI_LOADED_IMAGE_PROTOCOL_GUID (first 64 bits)
push rdx # push first 64 bits onto stack
mov rdx, rsp # arg2 = &guid
push 1 # arg6 = EFI_OPEN_PROTOCOL_BY_HANDLE_PROTOCOL
push 0 # arg5 = NULL
mov r9, r15 # arg4 = image_handle
mov rcx, r15 # arg1 = image_handle
sub rsp, 32 # allocate shadow stack space for UEFI function
call [r14+280] # system->boot->open_protocol(image_handle, &guid, &image, image_handle, 0, EFI_OPEN_PROTOCOL_BY_HANDLE_PROTOCOL)
mov rax, [rsp+64] # get image
mov rcx, rax # save image
# Command line args
mov rbx, [rax+56] # options = image->load_options
loop_options1: # Skip application name
add rbx, 2 # ++options
mov al, [rbx] # *options
cmp al, 0x20 # if *options != ' '
jne loop_options1 # then jump
add rbx, 2 # ++options
mov r12, rbx # save input file
loop_options2: # Skip argv[1]
add rbx, 2 # ++options
mov al, [rbx] # *options
cmp al, 0x20 # if *options != ' '
jne loop_options2 # then jump
mov byte ptr [rbx], 0 # *options = 0
add rbx, 2 # ++options
mov r13, rbx # save output file
# Get root file system
push rax # allocate stack for rootfs
mov r8, rsp # arg3 = &rootfs
mov rdx, [rip+SIMPLE_FS_PROTOCOL+8] # EFI_SIMPLE_FILE_SYSTEM_PROTOCOL_GUID (last 64 bits)
push rdx # push last 64 bits onto stack
mov rdx, [rip+SIMPLE_FS_PROTOCOL] # EFI_SIMPLE_FILE_SYSTEM_PROTOCOL_GUID (first 64 bits)
push rdx # push first 64 bits onto stack
mov rdx, rsp # arg2 = &guid
push 1 # arg6 = EFI_OPEN_PROTOCOL_BY_HANDLE_PROTOCOL
push 0 # arg5 = NULL
mov r9, r15 # arg4 = image_handle
mov rcx, [rcx+24] # arg1 = root_device = image->device
sub rsp, 32 # allocate shadow stack space for UEFI function
call [r14+280] # system->boot->open_protocol(root_device, &guid, &rootfs, image_handle, 0, EFI_OPEN_PROTOCOL_BY_HANDLE_PROTOCOL)
mov rcx, [rsp+64] # get rootfs
# Get root directory
push rdx # allocate stack for rootdir
mov rdx, rsp # arg2 = &rootdir
push rax # allocate shadow stack space for UEFI function
push rax # allocate shadow stack space for UEFI function
call [rcx+8] # rootfs->open_volume(rootfs, &rootdir)
pop rax # deallocate stack
pop rax # deallocate stack
pop r14 # save rootdir
# Open file for reading
push rdx # allocate stack for fin
mov rdx, rsp # 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
mov r8, r12 # arg3 = in
mov rcx, r14 # arg1 = rootdir
sub rsp, 32 # allocate shadow stack space for UEFI function
call [rcx+8] # rootdir->open()
mov rdi, [rsp+40] # get fin
# Open file for writing
push rdx # allocate stack for fout
mov rdx, rsp # 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
ror r9 # arg4 = EFI_FILE_MODE_CREATE| EFI_FILE_MODE_WRITE | EFI_FILE_MODE_READ
mov r8, r13 # arg3 = out
mov rcx, r14 # arg1 = rootdir
sub rsp, 32 # allocate shadow stack space for UEFI function
call [rcx+8] # rootdir->open()
mov rbx, [rsp+40] # get fout
mov r15, -1 # Our flag for byte processing mov r15, -1 # Our flag for byte processing
mov r14, 0 # temp storage for the sum mov r14, 0 # temp storage for the sum
@ -261,8 +258,6 @@ Second_pass_1:
jmp Second_pass jmp Second_pass
Second_pass_done: Second_pass_done:
ret
EOF: EOF:
ret ret
ascii_num: ascii_num:
@ -307,6 +302,7 @@ Read_byte:
mov rcx, rdi # arg1 = fin mov rcx, rdi # arg1 = fin
push 1 # size = 1 push 1 # size = 1
mov rdx, rsp # arg2 = &size mov rdx, rsp # arg2 = &size
xor esi, esi # zero rsi
push rsi # allocate stack push rsi # allocate stack
mov r8, rsp # arg3 = &input mov r8, rsp # arg3 = &input
push rax # allocate shadow stack space for UEFI function push rax # allocate shadow stack space for UEFI function
@ -345,7 +341,7 @@ print_chars:
Get_table_target: Get_table_target:
call Read_byte # Get single char label call Read_byte # Get single char label
shl rax, 3 # Each label in table takes 8 bytes to store shl rax, 3 # Each label in table takes 8 bytes to store
mov rcx, [rip+table] # Get table mov rcx, [rsp+24] # Get table
add rax, rcx # Calculate offset add rax, rcx # Calculate offset
ret ret
@ -364,16 +360,37 @@ StorePointer:
ret ret
Done: Done:
pop rcx # restore table
pop rsi # restore rootdir
pop r15 # restore image_handle
pop r14 # restore system->boot
pop r13 # restore root_device
# Free pool # Free pool
mov rcx, [rip+table] # arg1 = table # arg1 = table
push rax # allocate shadow stack space for UEFI function push rax # allocate shadow stack space for UEFI function
mov r14, [rip+SystemBoot] # get system->boot
call [r14+72] # system->boot->free_pool(table) call [r14+72] # system->boot->free_pool(table)
mov rcx, rdi # arg1 = fin mov rcx, rdi # arg1 = fin
call [rcx+16] # fin->close() call [rcx+16] # fin->close()
mov rcx, rbx # arg1 = fout mov rcx, rbx # arg1 = fout
call [rcx+16] # fout->close() call [rcx+16] # fout->close()
mov rcx, rsi # arg1 = rootdir
call [rcx+16] # rootdir->close()
mov r8, r15 # arg3 = image_handle
lea rdx, [rip+SIMPLE_FS_PROTOCOL] # guid = &SIMPLE_FS_PROTOCOL
mov rcx, r13 # arg1 = root_device
xor r9, r9 # arg4 = NULL
sub rsp, 32 # allocate shadow stack space for UEFI function
call [r14+288] # system->boot->close_protocol(root_device, &guid, image_handle, 0)
mov r8, r15 # arg3 = image_handle
lea rdx, [rip+LOADED_IMAGE_PROTOCOL] # guid = &LOADED_IMAGE_PROTOCOL
mov rcx, r8 # arg1 = image_handle
xor r9, r9 # arg4 = NULL
call [r14+288] # system->boot->close_protocol(image_handle, &guid, image_handle, 0)
abort: # used for debugging only abort: # used for debugging only
mov rsp, rbp # restore stack mov rsp, rbp # restore stack
ret # return to UEFI ret # return to UEFI
@ -391,9 +408,3 @@ SIMPLE_FS_PROTOCOL:
.short 0x6459 .short 0x6459
.short 0x11d2 .short 0x11d2
.byte 0x8e, 0x39, 0x00, 0xa0, 0xc9, 0x69, 0x72, 0x3b .byte 0x8e, 0x39, 0x00, 0xa0, 0xc9, 0x69, 0x72, 0x3b
table:
.long 0, 0
SystemBoot:
.long 0, 0

529
amd64/Development/hex1.hex2
View File

@ -6,374 +6,387 @@
# efi_main(void *image_handle, struct efi_system_table *system) # efi_main(void *image_handle, struct efi_system_table *system)
:_start :_start
4889E5 ; COPY_RSP_to_RBP # save stack pointer 4889E5 ; mov_rbp,rsp # save stack pointer
4989CF ; COPY_RCX_to_R15 # save image_handle 4989CF ; mov_r15,rcx # save image_handle
4C8B72 60 ; LOAD64_into_R14_from_Address_RDX_Immediate8 !96 # system->boot 4C8B72 60 ; mov_r14,[rdx+BYTE] !96 # system->boot
4C8935 %SystemBoot ; STORE64_rel_R14 %SystemBoot # save system->boot
# Allocate pool for single-character label table
52 ; PUSH_RDX # allocate stack for table
4989E0 ; COPY_RSP_to_R8 # arg3 = &table
31D2 ; XOR_EDX_EDX # zero rdx
B6 08 ; LOADI8_DH !0x8 # arg2 = 256 * 8 = 2048 = 0x800
6A 02 ; PUSH !2
59 ; POP_RCX # arg1 = EFI_LOADER_DATA
4883EC 18 ; SUBI8_RSP !24 # allocate shadow stack space for UEFI
41FF56 40 ; CALL_R14_Immediate8 !64 # system->boot->allocate_pool(EFI_LOADER_DATA, 2048, &table)
4883C4 18 ; ADDI8_RSP !24 # deallocate stack
58 ; POP_RAX # get table
488905 %table ; STORE64_rel_RAX %table # save table
# Open Loaded Image protocol # Open Loaded Image protocol
50 ; PUSH_RAX # allocate stack for image 4D89F9 ; mov_r9,r15 # arg4 = image_handle
4989E0 ; COPY_RSP_to_R8 # arg3 = &image 488D15 %LOADED_IMAGE_PROTOCOL ; lea_rdx,[rip+DWORD] %LOADED_IMAGE_PROTOCOL # guid = &LOADED_IMAGE_PROTOCOL
488B15 %LOADED_IMAGE_PROTOCOL_8 ; LOAD64_rel_RDX !LOADED_IMAGE_PROTOCOL_8 # EFI_LOADED_IMAGE_PROTOCOL_GUID (last 64 bits) 4C89C9 ; mov_rcx,r9 # arg1 = image_handle
52 ; PUSH_RDX # push last 64 bits onto stack 50 ; push_rax # allocate stack for image
488B15 %LOADED_IMAGE_PROTOCOL ; LOAD64_rel_RDX !LOADED_IMAGE_PROTOCOL # EFI_LOADED_IMAGE_PROTOCOL_GUID (first 64 bits) 4989E0 ; mov_r8,rsp # arg3 = &image
52 ; PUSH_RDX # push first 64 bits onto stack 6A 01 ; push !1 # arg6 = EFI_OPEN_PROTOCOL_BY_HANDLE_PROTOCOL
4889E2 ; COPY_RSP_to_RDX # arg2 = &guid 6A 00 ; push !0 # arg5 = NULL
6A 01 ; PUSH !1 # arg6 = EFI_OPEN_PROTOCOL_BY_HANDLE_PROTOCOL 4883EC 20 ; sub_rsp, !32 # allocate shadow stack space for UEFI function
6A 00 ; PUSH !0 # arg5 = NULL 41FF96 18010000 ; call_[r14+DWORD] %280 # system->boot->open_protocol(image_handle, &guid, &image, image_handle, 0, EFI_OPEN_PROTOCOL_BY_HANDLE_PROTOCOL)
4D89F9 ; COPY_R15_to_R9 # arg4 = image_handle 488B7C24 30 ; mov_rdi,[rsp+BYTE] !48 # save image
4C89F9 ; COPY_R15_to_RCX # arg1 = image_handle
4883EC 20 ; SUBI8_RSP !32 # allocate shadow stack space for UEFI function
41FF96 18010000 ; CALL_R14_Immediate32 %280 # system->boot->open_protocol(image_handle, &guid, &image, image_handle, 0, EFI_OPEN_PROTOCOL_BY_HANDLE_PROTOCOL)
488B4424 40 ; LOAD64_into_RAX_from_Address_RSP_Immediate8 !64 # get_image
4889C1 ; COPY_RCX_to_RAX # save image
# Command line args
488B58 38 ; LOAD64_into_RBX_from_Address_RAX_Immediate8 !56 # options = image->load_options
:loop_options1 # Skip application name
4883C3 02 ; ADDI8_RBX !2 # ++options
8A03 ; LOAD8_AL_from_Address_RBX # *options
3C 20 ; CMPI8_AL !0x20 # if *options != ' '
75 !loop_options1 ; JNE8 !loop_options1 # then jump
4883C3 02 ; ADDI8_RBX !2 # ++options
4989DC ; COPY_RBX_to_R12 # save input file
:loop_options2 # Skip argv[1]
4883C3 02 ; ADDI8_RBX !2 # ++options
8A03 ; LOAD8_AL_from_Address_RBX # *options
3C 20 ; CMPI8_AL !0x20 # if *options != ' '
75 !loop_options2 ; JNE8 !loop_options2 # then jump
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 file system # Get root file system
50 ; PUSH_RAX # allocate stack for rootfs 4D89F9 ; mov_r9,r15 # arg4 = image_handle
4989E0 ; COPY_RSP_to_R8 # arg3 = &rootfs 488D15 %SIMPLE_FS_PROTOCOL ; lea_rdx,[rip+DWORD] %SIMPLE_FS_PROTOCOL # guid = &SIMPLE_FS_PROTOCOL
488B15 %SIMPLE_FS_PROTOCOL_8 ; LOAD64_rel_RDX %SIMPLE_FS_PROTOCOL_8 # EFI_SIMPLE_FILE_SYSTEM_PROTOCOL_GUID (last 64 bits) 488B4F 18 ; mov_rcx,[rdi+BYTE] !24 # arg1 = root_device = image->device
52 ; PUSH_RDX # push last 64 bits onto stack 4989CD ; mov_r13,rcx # save root_device
488B15 %SIMPLE_FS_PROTOCOL ; LOAD64_rel_RDX %SIMPLE_FS_PROTOCOL # EFI_SIMPLE_FILE_SYSTEM_PROTOCOL_GUID (first 64 bits) 50 ; push_rax # allocate stack for rootfs
52 ; PUSH_RDX # push first 64 bits onto stack 4989E0 ; mov_r8,rsp # arg3 = &rootfs
4889E2 ; COPY_RSP_to_RDX # arg2 = &guid 6A 01 ; push !1 # arg6 = EFI_OPEN_PROTOCOL_BY_HANDLE_PROTOCOL
6A 01 ; PUSH !1 # arg6 = EFI_OPEN_PROTOCOL_BY_HANDLE_PROTOCOL 6A 00 ; push !0 # arg5 = NULL
6A 00 ; PUSH !0 # arg5 = NULL 4883EC 20 ; sub_rsp, !32 # allocate shadow stack space for UEFI function
4D89F9 ; COPY_R15_to_R9 # arg4 = image_handle 41FF96 18010000 ; call_[r14+DWORD] %280 # system->boot->open_protocol(root_device, &guid, &rootfs, image_handle, 0, EFI_OPEN_PROTOCOL_BY_HANDLE_PROTOCOL)
488B49 18 ; LOAD64_into_RCX_from_Address_RCX_Immediate8 !24 # arg1 = root_device = image->device 488B4C24 30 ; mov_rcx,[rsp+BYTE] !48 # get rootfs
4883EC 20 ; SUBI8_RSP !32 # allocate shadow stack space for UEFI function
41FF96 18010000 ; CALL_R14_Immediate32 %280 # system->boot->open_protocol(root_device, &guid, &rootfs, image_handle, 0, EFI_OPEN_PROTOCOL_BY_HANDLE_PROTOCOL)
488B4C24 40 ; LOAD64_into_RCX_from_Address_RSP_Immediate8 !64 # get rootfs
# Get root directory # Get root directory
52 ; PUSH_RDX # allocate stack for rootdir 50 ; push_rax # allocate stack for rootdir
4889E2 ; COPY_RSP_to_RDX # arg2 = &rootdir 4889E2 ; mov_rdx,rsp # arg2 = &rootdir
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 50 ; push_rax # allocate shadow stack space for UEFI function
FF51 08 ; CALL_RCX_Immediate8 !8 # rootfs->open_volume(rootfs, &rootdir) FF51 08 ; call_[rcx+BYTE] !8 # rootfs->open_volume(rootfs, &rootdir)
58 ; POP_RAX # deallocate stack 58 ; pop_rax # deallocate stack
58 ; POP_RAX # deallocate stack 58 ; pop_rax # deallocate stack
415E ; POP_R14 # save rootdir 5E ; pop_rsi # save rootdir
# Push command line arguments onto stack
488B5F 38 ; mov_rbx,[rdi+BYTE] !56 # options = image->load_options
4889DA ; mov_rdx,rbx # save beginning of load_options
48035F 30 ; add_rbx,[rdi+BYTE] !48 # go to the end of load_options
6A 00 ; push !0 # Save end of arguments (NULL) onto stack
:loop_options
4839D3 ; cmp_rbx,rdx # Check if we are done
74 !loop_options_done ; je8 !loop_options_done # We are done
4883EB 02 ; sub_rbx, !2 # --options
8A03 ; mov_al,[rbx] # *options
3C 20 ; cmp_al, !0x20 # if *options != ' '
75 !loop_options ; jne8 !loop_options # then continue looping
C603 00 ; mov_[rbx], !0 # zero it
4883C3 02 ; add_rbx, !2 # ++options
53 ; push_rbx # push another argument onto stack
EB !loop_options ; jmp8 !loop_options # next argument
:loop_options_done
# Open file for reading # Open file for reading
52 ; PUSH_RDX # allocate stack for fin 4158 ; pop_r8 # arg3 = in
4889E2 ; COPY_RSP_to_RDX # arg2 = &fin 52 ; push_rdx # allocate stack for fin
6A 01 ; PUSH !1 # arg5 = EFI_FILE_READ_ONLY 4889E2 ; mov_rdx,rsp # arg2 = &fin
6A 01 ; PUSH !1 # prepare to set arg4 to EFI_FILE_MODE_READ 6A 01 ; push !1 # arg5 = EFI_FILE_READ_ONLY
4159 ; POP_R9 # arg4 = EFI_FILE_MODE_READ 6A 01 ; push !1 # prepare to set arg4 to EFI_FILE_MODE_READ
4D89E0 ; COPY_R12_to_R8 # arg3 = in 4159 ; pop_r9 # arg4 = EFI_FILE_MODE_READ
4C89F1 ; COPY_R14_to_RCX # arg1 = rootdir 4889F1 ; mov_rcx,rsi # arg1 = rootdir
4883EC 20 ; SUBI8_RSP !32 # allocate shadow stack space for UEFI function 4883EC 20 ; sub_rsp, !32 # allocate shadow stack space for UEFI function
FF51 08 ; CALL_RCX_Immediate8 !8 # rootdir->open() FF51 08 ; call_[rcx+BYTE] !8 # rootdir->open()
488B7C24 28 ; LOAD64_into_RDI_from_Address_RSP_Immediate8 !40 # get fin 4883C4 28 ; add_rsp, !40 # deallocate stack
5F ; pop_rdi # get fin
# Open file for writing # Open file for writing
52 ; PUSH_RDX # allocate stack for fout 4158 ; pop_r8 # arg3 = out
4889E2 ; COPY_RSP_to_RDX # arg2 = &fout 52 ; push_rdx # allocate stack for fout
6A 00 ; PUSH !0 # arg5 = 0 4889E2 ; mov_rdx,rsp # arg2 = &fout
6A 07 ; PUSH !7 # to get 0x8000000000000003 we set the rightmost 3 bits 6A 00 ; push !0 # arg5 = 0
4159 ; POP_R9 # and then do right rotation by 1 6A 07 ; push !7 # to get 0x8000000000000003 we set the rightmost 3 bits
49D1C9 ; ROR_R9 # arg4 = EFI_FILE_MODE_CREATE| EFI_FILE_MODE_WRITE | EFI_FILE_MODE_READ 4159 ; pop_r9 # and then do right rotation by 1
4D89E8 ; COPY_R13_to_R8 # arg3 = out 49D1C9 ; ror_r9 # arg4 = EFI_FILE_MODE_CREATE| EFI_FILE_MODE_WRITE | EFI_FILE_MODE_READ
4C89F1 ; COPY_R14_to_RCX # arg1 = rootdir 4889F1 ; mov_rcx,rsi # arg1 = rootdir
4883EC 20 ; SUBI8_RSP !32 # allocate shadow stack space for UEFI function 4883EC 20 ; sub_rsp, !32 # allocate shadow stack space for UEFI function
FF51 08 ; CALL_RCX_Immediate8 !8 # rootdir->open() FF51 08 ; call_[rcx+BYTE] !8 # rootdir->open()
488B5C24 28 ; LOAD64_into_RBX_from_Address_RSP_Immediate8 !40 # get fout 4883C4 28 ; add_rsp, !40 # deallocate stack
5B ; pop_rbx # get fout
49C7C7 FFFFFFFF ; LOADI32_R15 %-1 # Our flag for byte processing # Save variables that are needed for cleanup
49C7C6 00000000 ; LOADI32_R14 %0 # temp storage for the sum 4155 ; push_r13 # save root_device
49C7C5 00000000 ; LOADI32_R13 %0 # Our starting IP 4156 ; push_r14 # save system->boot
E8 %First_pass ; CALLI32 %First_pass # Process it 4157 ; push_r15 # save image_handle
56 ; push_rsi # save rootdir
# Allocate pool for single-character label table
# pointer to table will be stored at the top of the stack
52 ; push_rdx # allocate stack for table
4989E0 ; mov_r8,rsp # arg3 = &table
31D2 ; xor_edx,edx # zero rdx
B6 08 ; mov_dh, !0x8 # arg2 = 256 * 8 = 2048 = 0x800
6A 02 ; push !2
59 ; pop_rcx # arg1 = EFI_LOADER_DATA
4883EC 18 ; sub_rsp, !24 # allocate shadow stack space for UEFI
41FF56 40 ; call_[r14+BYTE] !64 # system->boot->allocate_pool(EFI_LOADER_DATA, 2048, &table)
4883C4 18 ; add_rsp, !24 # deallocate stack
49C7C7 FFFFFFFF ; mov_r15, %-1 # Our flag for byte processing
49C7C6 00000000 ; mov_r14, %0 # temp storage for the sum
49C7C5 00000000 ; mov_r13, %0 # Our starting IP
E8 %First_pass ; call %First_pass # Process it
# rewind input file # rewind input file
4889F9 ; COPY_RDI_to_RCX # Using our input file 4889F9 ; mov_rcx,rdi # Using our input file
31D2 ; XOR_EDX_EDX # Offset Zero 31D2 ; xor_edx,edx # Offset Zero
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 50 ; push_rax # allocate shadow stack space for UEFI function
FF51 38 ; CALL_RCX_Immediate8 !56 # fin->set_position(fin, 0) FF51 38 ; call_[rcx+BYTE] !56 # fin->set_position(fin, 0)
58 ; POP_RAX # deallocate stack 58 ; pop_rax # deallocate stack
58 ; POP_RAX # deallocate stack 58 ; pop_rax # deallocate stack
49C7C7 FFFFFFFF ; LOADI32_R15 %-1 # Our flag for byte processing 49C7C7 FFFFFFFF ; mov_r15, %-1 # Our flag for byte processing
49C7C6 00000000 ; LOADI32_R14 %0 # temp storage for the sum 49C7C6 00000000 ; mov_r14, %0 # temp storage for the sum
49C7C5 00000000 ; LOADI32_R13 %0 # Our starting IP 49C7C5 00000000 ; mov_r13, %0 # Our starting IP
E8 %Second_pass ; CALLI32 %Second_pass # Process it E8 %Second_pass ; call %Second_pass # Process it
E9 %Done ; JMP32 %Done E9 %Done ; jmp %Done
:First_pass :First_pass
E8 %Read_byte ; CALLI32 %Read_byte E8 %Read_byte ; call %Read_byte
# Deal with EOF # Deal with EOF
483D FCFFFFFF ; CMPI32_RAX %-4 483D FCFFFFFF ; cmp_rax, %-4
0F84 %First_pass_done ; JE32 %First_pass_done 0F84 %First_pass_done ; je %First_pass_done
# Check for : # Check for :
483D 3A000000 ; CMPI32_RAX %0x3a 483D 3A000000 ; cmp_rax, %0x3a
0F85 %First_pass_0 ; JNE32 %First_pass_0 0F85 %First_pass_0 ; jne %First_pass_0
# Deal with label # Deal with label
E8 %StoreLabel ; CALLI32 %StoreLabel E8 %StoreLabel ; call %StoreLabel
:First_pass_0 :First_pass_0
# Check for % # Check for %
483D 25000000 ; CMPI32_RAX %0x25 483D 25000000 ; cmp_rax, %0x25
0F84 %First_pass_pointer ; JE32 %First_pass_pointer 0F84 %First_pass_pointer ; je %First_pass_pointer
# Deal with everything else # Deal with everything else
E8 %hex ; CALLI32 %hex # Process our char E8 %hex ; call %hex # Process our char
# Deal with EOF # Deal with EOF
483D FCFFFFFF ; CMPI32_RAX %-4 483D FCFFFFFF ; cmp_rax, %-4
0F84 %First_pass_done ; JE32 %First_pass_done 0F84 %First_pass_done ; je %First_pass_done
# deal with -1 values # deal with -1 values
483D 00000000 ; CMPI32_RAX %0 483D 00000000 ; cmp_rax, %0
0F8C %First_pass ; JL32 %First_pass 0F8C %First_pass ; jl %First_pass
# deal with toggle # deal with toggle
4981FF 00000000 ; CMPI32_R15 %0 4981FF 00000000 ; cmp_r15, %0
0F84 %First_pass_1 ; JE32 %First_pass_1 0F84 %First_pass_1 ; je %First_pass_1
4981C5 01000000 ; ADDI32_to_R13 %1 # Increment IP 4981C5 01000000 ; add_r13, %1 # Increment IP
:First_pass_1 :First_pass_1
49F7D7 ; NOT_R15 49F7D7 ; not_r15
E9 %First_pass ; JMP32 %First_pass E9 %First_pass ; jmp %First_pass
:First_pass_pointer :First_pass_pointer
# Deal with Pointer to label # Deal with Pointer to label
E8 %Read_byte ; CALLI32 %Read_byte # Drop the char E8 %Read_byte ; call %Read_byte # Drop the char
4981C5 04000000 ; ADDI32_to_R13 %4 # Increment IP 4981C5 04000000 ; add_r13, %4 # Increment IP
E9 %First_pass ; JMP32 %First_pass # Loop again E9 %First_pass ; jmp %First_pass # Loop again
:First_pass_done :First_pass_done
C3 ; RET C3 ; ret
:hex :hex
# deal with EOF # deal with EOF
483D FCFFFFFF ; CMPI32_RAX %-4 483D FCFFFFFF ; cmp_rax, %-4
0F84 %EOF ; JE32 %EOF 0F84 %EOF ; je %EOF
# deal with line comments starting with # # deal with line comments starting with #
483D 23000000 ; CMPI32_RAX %0x23 483D 23000000 ; cmp_rax, %0x23
0F84 %ascii_comment ; JE32 %ascii_comment 0F84 %ascii_comment ; je %ascii_comment
# deal with line comments starting with ; # deal with line comments starting with ;
483D 3B000000 ; CMPI32_RAX %0x3b 483D 3B000000 ; cmp_rax, %0x3b
0F84 %ascii_comment ; JE32 %ascii_comment 0F84 %ascii_comment ; je %ascii_comment
# deal all ascii less than 0 # deal all ascii less than 0
483D 30000000 ; CMPI32_RAX %0x30 483D 30000000 ; cmp_rax, %0x30
0F8C %ascii_other ; JL32 %ascii_other 0F8C %ascii_other ; jl %ascii_other
# deal with 0-9 # deal with 0-9
483D 3A000000 ; CMPI32_RAX %0x3a 483D 3A000000 ; cmp_rax, %0x3a
0F8C %ascii_num ; JL32 %ascii_num 0F8C %ascii_num ; jl %ascii_num
# deal with all ascii less than A # deal with all ascii less than A
483D 41000000 ; CMPI32_RAX %0x41 483D 41000000 ; cmp_rax, %0x41
0F8C %ascii_other ; JL32 %ascii_other 0F8C %ascii_other ; jl %ascii_other
# deal with A-F # deal with A-F
483D 47000000 ; CMPI32_RAX %0x47 483D 47000000 ; cmp_rax, %0x47
0F8C %ascii_high ; JL32 %ascii_high 0F8C %ascii_high ; jl %ascii_high
# deal with all ascii less than a # deal with all ascii less than a
483D 61000000 ; CMPI32_RAX %0x61 483D 61000000 ; cmp_rax, %0x61
0F8C %ascii_other ; JL32 %ascii_other 0F8C %ascii_other ; jl %ascii_other
# deal with a-f # deal with a-f
483D 67000000 ; CMPI32_RAX %0x67 483D 67000000 ; cmp_rax, %0x67
0F8C %ascii_low ; JL32 %ascii_low 0F8C %ascii_low ; jl %ascii_low
# The rest that remains needs to be ignored # The rest that remains needs to be ignored
E9 %ascii_other ; JMP32 %ascii_other E9 %ascii_other ; jmp %ascii_other
:Second_pass :Second_pass
E8 %Read_byte ; CALLI32 %Read_byte E8 %Read_byte ; call %Read_byte
# Deal with EOF # Deal with EOF
483D FCFFFFFF ; CMPI32_RAX %-4 483D FCFFFFFF ; cmp_rax, %-4
0F84 %Second_pass_done ; JE32 %Second_pass_done 0F84 %Second_pass_done ; je %Second_pass_done
# Simply drop the label # Simply drop the label
483D 3A000000 ; CMPI32_RAX %0x3a 483D 3A000000 ; cmp_rax, %0x3a
0F85 %Second_pass_0 ; JNE32 %Second_pass_0 0F85 %Second_pass_0 ; jne %Second_pass_0
E8 %Read_byte ; CALLI32 %Read_byte E8 %Read_byte ; call %Read_byte
E9 %Second_pass ; JMP32 %Second_pass E9 %Second_pass ; jmp %Second_pass
:Second_pass_0 :Second_pass_0
# Deal with % pointer # Deal with % pointer
483D 25000000 ; CMPI32_RAX %0x25 483D 25000000 ; cmp_rax, %0x25
0F85 %Second_pass_1 ; JNE32 %Second_pass_1 0F85 %Second_pass_1 ; jne %Second_pass_1
E8 %StorePointer ; CALLI32 %StorePointer E8 %StorePointer ; call %StorePointer
E9 %Second_pass ; JMP32 %Second_pass E9 %Second_pass ; jmp %Second_pass
:Second_pass_1 :Second_pass_1
# Deal with everything else # Deal with everything else
E8 %hex ; CALLI32 %hex # Process our char E8 %hex ; call %hex # Process our char
# Deal with EOF # Deal with EOF
483D FCFFFFFF ; CMPI32_RAX %-4 483D FCFFFFFF ; cmp_rax, %-4
0F84 %Second_pass_done ; JE32 %Second_pass_done 0F84 %Second_pass_done ; je %Second_pass_done
# deal with -1 values # deal with -1 values
483D 00000000 ; CMPI32_RAX %0 483D 00000000 ; cmp_rax, %0
0F8C %Second_pass ; JL32 %Second_pass 0F8C %Second_pass ; jl %Second_pass
# deal with toggle # deal with toggle
4981FF 00000000 ; CMPI32_R15 %0 4981FF 00000000 ; cmp_r15, %0
0F84 %print ; JE32 %print 0F84 %print ; je %print
# process first byte of pair # process first byte of pair
4989C6 ; COPY_RAX_to_R14 4989C6 ; mov_r14,rax
49C7C7 00000000 ; LOADI32_R15 %0 49C7C7 00000000 ; mov_r15, %0
E9 %Second_pass ; JMP32 %Second_pass E9 %Second_pass ; jmp %Second_pass
:Second_pass_done :Second_pass_done
C3 ; RET
:EOF :EOF
C3 ; RET C3 ; ret
:ascii_num :ascii_num
4883E8 30 ; SUBI8_from_RAX !0x30 4883E8 30 ; sub_rax, !0x30
C3 ; RET C3 ; ret
:ascii_low :ascii_low
4883E8 57 ; SUBI8_from_RAX !0x57 4883E8 57 ; sub_rax, !0x57
C3 ; RET C3 ; ret
:ascii_high :ascii_high
4883E8 37 ; SUBI8_from_RAX !0x37 4883E8 37 ; sub_rax, !0x37
C3 ; RET C3 ; ret
:ascii_other :ascii_other
48C7C0 FFFFFFFF ; LOADI32_RAX %-1 48C7C0 FFFFFFFF ; mov_rax, %-1
C3 ; RET C3 ; ret
:ascii_comment :ascii_comment
E8 %Read_byte ; CALLI32 %Read_byte E8 %Read_byte ; call %Read_byte
483D 0D000000 ; CMPI32_RAX %0xd 483D 0D000000 ; cmp_rax, %0xd
0F84 %ascii_comment_cr ; JE32 %ascii_comment_cr 0F84 %ascii_comment_cr ; je %ascii_comment_cr
483D 0A000000 ; CMPI32_RAX %0xa 483D 0A000000 ; cmp_rax, %0xa
0F85 %ascii_comment ; JNE32 %ascii_comment 0F85 %ascii_comment ; jne %ascii_comment
:ascii_comment_cr :ascii_comment_cr
48C7C0 FFFFFFFF ; LOADI32_RAX %-1 48C7C0 FFFFFFFF ; mov_rax, %-1
C3 ; RET C3 ; ret
# process second byte of pair # process second byte of pair
:print :print
# update the sum and store in output # update the sum and store in output
49C1E6 04 ; SHL8_R14 !4 49C1E6 04 ; shl_r14, !4
4C01F0 ; ADD_R14_to_RAX 4C01F0 ; add_rax,r14
# flip the toggle # flip the toggle
49F7D7 ; NOT_R15 # R15 = -1 49F7D7 ; not_r15 # R15 = -1
48C7C2 01000000 ; LOADI32_RDX %1 # set the size of chars we want 48C7C2 01000000 ; mov_rdx, %1 # set the size of chars we want
E8 %print_chars ; CALLI32 %print_chars E8 %print_chars ; call %print_chars
4981C5 01000000 ; ADDI32_to_R13 %1 # Increment IP 4981C5 01000000 ; add_r13, %1 # Increment IP
E9 %Second_pass ; JMP32 %Second_pass E9 %Second_pass ; jmp %Second_pass
:Read_byte :Read_byte
4889F9 ; COPY_RDI_to_RCX # arg1 = fin 4889F9 ; mov_rcx,rdi # arg1 = fin
6A 01 ; PUSH !1 # size = 1 6A 01 ; push !1 # size = 1
4889E2 ; COPY_RSP_to_RDX # arg2 = &size 4889E2 ; mov_rdx,rsp # arg2 = &size
56 ; PUSH_RSI # allocate stack 31F6 ; xor_esi,esi # zero rsi
4989E0 ; COPY_RSP_to_R8 # arg3 = &input 56 ; push_rsi # allocate stack
50 ; PUSH_RAX # allocate shadow stack space for UEFI function 4989E0 ; mov_r8,rsp # 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 50 ; push_rax # allocate shadow stack space for UEFI function
FF51 20 ; CALL_RCX_Immediate8 !32 # fin->read() 50 ; push_rax # allocate shadow stack space for UEFI function
58 ; POP_RAX # deallocate stack FF51 20 ; call_[rcx+BYTE] !32 # fin->read()
58 ; POP_RAX # deallocate stack 58 ; pop_rax # deallocate stack
58 ; POP_RAX # deallocate stack 58 ; pop_rax # deallocate stack
58 ; POP_RAX # save input to rax 58 ; pop_rax # deallocate stack
5E ; POP_RSI # save size to rsi 58 ; pop_rax # save input to rax
5E ; pop_rsi # save size to rsi
# If the file ended (0 bytes read) return EOF # If the file ended (0 bytes read) return EOF
85F6 ; TEST_ESI_ESI # if size = 0 85F6 ; test_esi,esi # if size = 0
75 !Read_byte_1 ; JNE8 !Read_byte_1 75 !Read_byte_1 ; jne8 !Read_byte_1
48C7C0 FCFFFFFF ; LOADI32_RAX %-4 # Put EOF in rax 48C7C0 FCFFFFFF ; mov_rax, %-4 # Put EOF in rax
:Read_byte_1 :Read_byte_1
C3 ; RET # return C3 ; ret # return
# Writes bytes stored in rax # Writes bytes stored in rax
:print_chars :print_chars
4889D9 ; COPY_RBX_to_RCX # arg1 = fout 4889D9 ; mov_rcx,rbx # arg1 = fout
52 ; PUSH_RDX # set size 52 ; push_rdx # set size
4889E2 ; COPY_RSP_to_RDX # arg2 = &size 4889E2 ; mov_rdx,rsp # arg2 = &size
50 ; PUSH_RAX # allocate stack 50 ; push_rax # allocate stack
4989E0 ; COPY_RSP_to_R8 # arg3 = &output 4989E0 ; mov_r8,rsp # 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 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
FF51 28 ; CALL_RCX_Immediate8 !40 # fout->write() FF51 28 ; call_[rcx+BYTE] !40 # fout->write()
4883C4 28 ; ADDI8_RSP !40 # deallocate stack 4883C4 28 ; add_rsp, !40 # deallocate stack
C3 ; RET # return C3 ; ret # return
:Get_table_target :Get_table_target
E8 %Read_byte ; CALLI32 %Read_byte # Get single char label E8 %Read_byte ; call %Read_byte # Get single char label
48C1E0 03 ; SHL8_RAX !3 # Each label in table takes 8 bytes to store 48C1E0 03 ; shl_rax, !3 # Each label in table takes 8 bytes to store
488B0D %table ; LOAD64_rel_RCX %table # Get table 488B4C24 18 ; mov_rcx,[rsp+BYTE] !24 # Get table
4801C8 ; ADD_RCX_to_RAX # Calculate offset 4801C8 ; add_rax,rcx # Calculate offset
C3 ; RET C3 ; ret
:StoreLabel :StoreLabel
E8 %Get_table_target ; CALLI32 %Get_table_target E8 %Get_table_target ; call %Get_table_target
4C8928 ; STORE32_R13_to_Address_in_RAX # Write out pointer to table 4C8928 ; mov_[rax],r13 # Write out pointer to table
C3 ; RET C3 ; ret
:StorePointer :StorePointer
4981C5 04000000 ; ADDI32_to_R13 %4 # Increment IP 4981C5 04000000 ; add_r13, %4 # Increment IP
E8 %Get_table_target ; CALLI32 %Get_table_target # Get address of pointer E8 %Get_table_target ; call %Get_table_target # Get address of pointer
678B00 ; LOAD32_Address_in_RAX_into_RAX # Get pointer 488B00 ; mov_rax,[rax] # Get pointer
4C29E8 ; SUB_R13_from_RAX # target - ip 4C29E8 ; sub_rax,r13 # target - ip
48C7C2 04000000 ; LOADI32_RDX %4 # set the size of chars we want 48C7C2 04000000 ; mov_rdx, %4 # set the size of chars we want
E8 %print_chars ; CALLI32 %print_chars E8 %print_chars ; call %print_chars
C3 ; RET C3 ; ret
:Done :Done
59 ; pop_rcx # restore table
5E ; pop_rsi # restore rootdir
415F ; pop_r15 # restore image_handle
415E ; pop_r14 # restore system->boot
415D ; pop_r13 # restore root_device
# Free pool # Free pool
488B0D %table ; LOAD64_rel_RCX %table # arg1 = table # arg1 = table
50 ; PUSH_RAX # allocate shadow stack space for UEFI function 50 ; push_rax # allocate shadow stack space for UEFI function
4C8B35 %SystemBoot ; LOAD64_rel_R14 %SystemBoot # get system->boot 41FF56 48 ; call_[r14+BYTE] !72 # system->boot->free_pool(table)
41FF56 48 ; CALL_R14_Immediate8 !72 # system->boot->free_pool(table)
4889F9 ; COPY_RDI_to_RCX # arg1 = fin 4889F9 ; mov_rcx,rdi # arg1 = fin
FF51 10 ; CALL_RCX_Immediate8 !16 # fin->close() FF51 10 ; call_[rcx+BYTE] !16 # fin->close()
4889D9 ; COPY_RBX_to_RCX # arg1 = fout 4889D9 ; mov_rcx,rbx # arg1 = fout
FF51 10 ; CALL_RCX_Immediate8 !16 # fout->close() FF51 10 ; call_[rcx+BYTE] !16 # fout->close()
4889F1 ; mov_rcx,rsi # arg1 = rootdir
FF51 10 ; call_[rcx+BYTE] !16 # rootdir->close()
4889EC ; COPY_RBP_to_RSP # restore stack 4D89F8 ; mov_r8,r15 # arg3 = image_handle
C3 ; RET # return to UEFI 488D15 %SIMPLE_FS_PROTOCOL ; lea_rdx,[rip+DWORD] %SIMPLE_FS_PROTOCOL # guid = &SIMPLE_FS_PROTOCOL
4C89E9 ; mov_rcx,r13 # arg1 = root_device
4D31C9 ; xor_r9,r9 # arg4 = NULL
4883EC 20 ; sub_rsp, !32 # allocate shadow stack space for UEFI function
41FF96 20010000 ; call_[r14+DWORD] %288 # system->boot->close_protocol(root_device, &guid, image_handle, 0)
4D89F8 ; mov_r8,r15 # arg3 = image_handle
488D15 %LOADED_IMAGE_PROTOCOL ; lea_rdx,[rip+DWORD] %LOADED_IMAGE_PROTOCOL # guid = &LOADED_IMAGE_PROTOCOL
4C89C1 ; mov_rcx,r8 # arg1 = image_handle
4D31C9 ; xor_r9,r9 # arg4 = NULL
41FF96 20010000 ; call_[r14+DWORD] %288 # system->boot->close_protocol(image_handle, &guid, image_handle, 0)
4889EC ; mov_rsp,rbp # restore stack
C3 ; ret # return to UEFI
# Protocol GUIDs # Protocol GUIDs
@ -381,20 +394,12 @@
A1 31 1B 5B ; %0x5b1b31a1 A1 31 1B 5B ; %0x5b1b31a1
62 95 ; @0x9562 62 95 ; @0x9562
D2 11 ; @0x11d2 D2 11 ; @0x11d2
:LOADED_IMAGE_PROTOCOL_8
8E 3F 00 A0 C9 69 72 3B ; !0x8e !0x3f !0 !0xa0 !0xc9 !0x69 !0x72 !0x3b 8E 3F 00 A0 C9 69 72 3B ; !0x8e !0x3f !0 !0xa0 !0xc9 !0x69 !0x72 !0x3b
:SIMPLE_FS_PROTOCOL :SIMPLE_FS_PROTOCOL
22 5B 4E 96 ; %0x0964e5b22 22 5B 4E 96 ; %0x0964e5b22
59 64 ; @0x6459 59 64 ; @0x6459
D2 11 ; @0x11d2 D2 11 ; @0x11d2
:SIMPLE_FS_PROTOCOL_8
8E 39 00 A0 C9 69 72 3B ; !0x8e !0x39 !0 !0xa0 !0xc9 !0x69 !0x72 !0x3b 8E 39 00 A0 C9 69 72 3B ; !0x8e !0x39 !0 !0xa0 !0xc9 !0x69 !0x72 !0x3b
:table
00000000 00000000
:SystemBoot
00000000 00000000
:PE32_end :PE32_end

8
amd64/Development/hex2.M1
View File

@ -63,6 +63,10 @@ DEFINE mov_al,[rsi] 8A06
DEFINE mov_bl,[rdi] 8A1F DEFINE mov_bl,[rdi] 8A1F
DEFINE mov_rcx,[rbx] 488B0B DEFINE mov_rcx,[rbx] 488B0B
DEFINE mov_rcx,[rcx] 488B09 DEFINE mov_rcx,[rcx] 488B09
DEFINE mov_[rax],r11 4C8918
DEFINE mov_[rbx], C603
DEFINE mov_[rbx],al 8803
DEFINE mov_[rbx],rcx 48890B
DEFINE mov_rax,[rcx+BYTE] 488B41 DEFINE mov_rax,[rcx+BYTE] 488B41
DEFINE mov_rbx,[rdi+BYTE] 488B5F DEFINE mov_rbx,[rdi+BYTE] 488B5F
DEFINE mov_rcx,[rdi+BYTE] 488B4F DEFINE mov_rcx,[rdi+BYTE] 488B4F
@ -80,10 +84,6 @@ DEFINE mov_[r11+BYTE],r12 4D8963
DEFINE mov_[rip+DWORD],rax 488905 DEFINE mov_[rip+DWORD],rax 488905
DEFINE mov_[rip+DWORD],rcx 48890D DEFINE mov_[rip+DWORD],rcx 48890D
DEFINE mov_[rip+DWORD],r14 4C8935 DEFINE mov_[rip+DWORD],r14 4C8935
DEFINE mov_[rax],r11 4C8918
DEFINE mov_[rbx], C603
DEFINE mov_[rbx],al 8803
DEFINE mov_[rbx],rcx 48890B
DEFINE movzx_rax,al 480FB6C0 DEFINE movzx_rax,al 480FB6C0
DEFINE movzx_rbx,bl 480FB6DB DEFINE movzx_rbx,bl 480FB6DB
DEFINE not_r15 49F7D7 DEFINE not_r15 49F7D7

2
amd64/Development/hex2.S
View File

@ -36,7 +36,7 @@ _start:
mov r9, [rip+image_handle] # arg4 = image_handle mov r9, [rip+image_handle] # arg4 = image_handle
lea rdx, [rip+SIMPLE_FS_PROTOCOL] # guid = &SIMPLE_FS_PROTOCOL lea rdx, [rip+SIMPLE_FS_PROTOCOL] # guid = &SIMPLE_FS_PROTOCOL
mov rcx, [rdi+24] # arg1 = root_device = image->device mov rcx, [rdi+24] # arg1 = root_device = image->device
mov [rip+root_device], rdi # save root_device mov [rip+root_device], rcx # save root_device
call open_protocol # open protocol call open_protocol # open protocol
mov rcx, rax # get rootfs mov rcx, rax # get rootfs

589
amd64/hex1.hex0
View File

@ -120,9 +120,9 @@ F0 00 # SizeOfOptionalHeader
# [0x148] # [0x148]
# Start of section headers # Start of section headers
00 00 00 00 00 00 00 00 ; Name of the section (empty) but could set to ".text" 00 00 00 00 00 00 00 00 ; Name of the section (empty) but could set to ".text"
D4 03 00 00 ; VirtualSize CF 03 00 00 ; VirtualSize
00 10 00 00 ; VirtualAddress 00 10 00 00 ; VirtualAddress
D4 03 00 00 ; SizeOfRawData CF 03 00 00 ; SizeOfRawData
70 01 00 00 ; PointerToRawData 70 01 00 00 ; PointerToRawData
00 00 00 00 ; PointerToRelocations 00 00 00 00 ; PointerToRelocations
00 00 00 00 ; PointerToLinenumbers 00 00 00 00 ; PointerToLinenumbers
@ -134,396 +134,401 @@ D4 03 00 00 ; SizeOfRawData
# efi_main(void *image_handle, struct efi_system_table *system) # efi_main(void *image_handle, struct efi_system_table *system)
# :_start # :_start
4889E5 ; COPY_RSP_to_RBP # save stack pointer 4889E5 ; mov_rbp,rsp # save stack pointer
4989CF ; COPY_RCX_to_R15 # save image_handle 4989CF ; mov_r15,rcx # save image_handle
4C8B72 60 ; LOAD64_into_R14_from_Address_RDX_Immediate8 !96 # system->boot 4C8B72 60 ; mov_r14,[rdx+BYTE] !96 # system->boot
4C8935 BB030000 ; STORE64_rel_R14 %SystemBoot # save system->boot
# Allocate pool for single-character label table
52 ; PUSH_RDX # allocate stack for table
4989E0 ; COPY_RSP_to_R8 # arg3 = &table
31D2 ; XOR_EDX_EDX # zero rdx
B6 08 ; LOADI8_DH !0x8 # arg2 = 256 * 8 = 2048 = 0x800
6A 02 ; PUSH !2
59 ; POP_RCX # arg1 = EFI_LOADER_DATA
4883EC 18 ; SUBI8_RSP !24 # allocate shadow stack space for UEFI
41FF56 40 ; CALL_R14_Immediate8 !64 # system->boot->allocate_pool(EFI_LOADER_DATA, 2048, &table)
4883C4 18 ; ADDI8_RSP !24 # deallocate stack
58 ; POP_RAX # get table
488905 94030000 ; STORE64_rel_RAX %table # save table
# Open Loaded Image protocol # Open Loaded Image protocol
50 ; PUSH_RAX # allocate stack for image 4D89F9 ; mov_r9,r15 # arg4 = image_handle
4989E0 ; COPY_RSP_to_R8 # arg3 = &image 488D15 9B030000 ; lea_rdx,[rip+DWORD] %LOADED_IMAGE_PROTOCOL # guid = &LOADED_IMAGE_PROTOCOL
488B15 71030000 ; LOAD64_rel_RDX !LOADED_IMAGE_PROTOCOL_8 # EFI_LOADED_IMAGE_PROTOCOL_GUID (last 64 bits) 4C89C9 ; mov_rcx,r9 # arg1 = image_handle
52 ; PUSH_RDX # push last 64 bits onto stack 50 ; push_rax # allocate stack for image
488B15 61030000 ; LOAD64_rel_RDX !LOADED_IMAGE_PROTOCOL # EFI_LOADED_IMAGE_PROTOCOL_GUID (first 64 bits) 4989E0 ; mov_r8,rsp # arg3 = &image
52 ; PUSH_RDX # push first 64 bits onto stack 6A 01 ; push !1 # arg6 = EFI_OPEN_PROTOCOL_BY_HANDLE_PROTOCOL
4889E2 ; COPY_RSP_to_RDX # arg2 = &guid 6A 00 ; push !0 # arg5 = NULL
6A 01 ; PUSH !1 # arg6 = EFI_OPEN_PROTOCOL_BY_HANDLE_PROTOCOL 4883EC 20 ; sub_rsp, !32 # allocate shadow stack space for UEFI function
6A 00 ; PUSH !0 # arg5 = NULL 41FF96 18010000 ; call_[r14+DWORD] %280 # system->boot->open_protocol(image_handle, &guid, &image, image_handle, 0, EFI_OPEN_PROTOCOL_BY_HANDLE_PROTOCOL)
4D89F9 ; COPY_R15_to_R9 # arg4 = image_handle 488B7C24 30 ; mov_rdi,[rsp+BYTE] !48 # save image
4C89F9 ; COPY_R15_to_RCX # arg1 = image_handle
4883EC 20 ; SUBI8_RSP !32 # allocate shadow stack space for UEFI function
41FF96 18010000 ; CALL_R14_Immediate32 %280 # system->boot->open_protocol(image_handle, &guid, &image, image_handle, 0, EFI_OPEN_PROTOCOL_BY_HANDLE_PROTOCOL)
488B4424 40 ; LOAD64_into_RAX_from_Address_RSP_Immediate8 !64 # get_image
4889C1 ; COPY_RCX_to_RAX # save image
# Command line args
488B58 38 ; LOAD64_into_RBX_from_Address_RAX_Immediate8 !56 # options = image->load_options
# :loop_options1 [_start+0x68] # Skip application name
4883C3 02 ; ADDI8_RBX !2 # ++options
8A03 ; LOAD8_AL_from_Address_RBX # *options
3C 20 ; CMPI8_AL !0x20 # if *options != ' '
75 F6 ; JNE8 !loop_options1 # then jump
4883C3 02 ; ADDI8_RBX !2 # ++options
4989DC ; COPY_RBX_to_R12 # save input file
# :loop_options2 [_start+0x79] # Skip argv[1]
4883C3 02 ; ADDI8_RBX !2 # ++options
8A03 ; LOAD8_AL_from_Address_RBX # *options
3C 20 ; CMPI8_AL !0x20 # if *options != ' '
75 F6 ; JNE8 !loop_options2 # then jump
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 file system # Get root file system
50 ; PUSH_RAX # allocate stack for rootfs 4D89F9 ; mov_r9,r15 # arg4 = image_handle
4989E0 ; COPY_RSP_to_R8 # arg3 = &rootfs 488D15 86030000 ; lea_rdx,[rip+DWORD] %SIMPLE_FS_PROTOCOL # guid = &SIMPLE_FS_PROTOCOL
488B15 24030000 ; LOAD64_rel_RDX %SIMPLE_FS_PROTOCOL_8 # EFI_SIMPLE_FILE_SYSTEM_PROTOCOL_GUID (last 64 bits) 488B4F 18 ; mov_rcx,[rdi+BYTE] !24 # arg1 = root_device = image->device
52 ; PUSH_RDX # push last 64 bits onto stack 4989CD ; mov_r13,rcx # save root_device
488B15 14030000 ; LOAD64_rel_RDX %SIMPLE_FS_PROTOCOL # EFI_SIMPLE_FILE_SYSTEM_PROTOCOL_GUID (first 64 bits) 50 ; push_rax # allocate stack for rootfs
52 ; PUSH_RDX # push first 64 bits onto stack 4989E0 ; mov_r8,rsp # arg3 = &rootfs
4889E2 ; COPY_RSP_to_RDX # arg2 = &guid 6A 01 ; push !1 # arg6 = EFI_OPEN_PROTOCOL_BY_HANDLE_PROTOCOL
6A 01 ; PUSH !1 # arg6 = EFI_OPEN_PROTOCOL_BY_HANDLE_PROTOCOL 6A 00 ; push !0 # arg5 = NULL
6A 00 ; PUSH !0 # arg5 = NULL 4883EC 20 ; sub_rsp, !32 # allocate shadow stack space for UEFI function
4D89F9 ; COPY_R15_to_R9 # arg4 = image_handle 41FF96 18010000 ; call_[r14+DWORD] %280 # system->boot->open_protocol(root_device, &guid, &rootfs, image_handle, 0, EFI_OPEN_PROTOCOL_BY_HANDLE_PROTOCOL)
488B49 18 ; LOAD64_into_RCX_from_Address_RCX_Immediate8 !24 # arg1 = root_device = image->device 488B4C24 30 ; mov_rcx,[rsp+BYTE] !48 # get rootfs
4883EC 20 ; SUBI8_RSP !32 # allocate shadow stack space for UEFI function
41FF96 18010000 ; CALL_R14_Immediate32 %280 # system->boot->open_protocol(root_device, &guid, &rootfs, image_handle, 0, EFI_OPEN_PROTOCOL_BY_HANDLE_PROTOCOL)
488B4C24 40 ; LOAD64_into_RCX_from_Address_RSP_Immediate8 !64 # get rootfs
# Get root directory # Get root directory
52 ; PUSH_RDX # allocate stack for rootdir 50 ; push_rax # allocate stack for rootdir
4889E2 ; COPY_RSP_to_RDX # arg2 = &rootdir 4889E2 ; mov_rdx,rsp # arg2 = &rootdir
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 50 ; push_rax # allocate shadow stack space for UEFI function
FF51 08 ; CALL_RCX_Immediate8 !8 # rootfs->open_volume(rootfs, &rootdir) FF51 08 ; call_[rcx+BYTE] !8 # rootfs->open_volume(rootfs, &rootdir)
58 ; POP_RAX # deallocate stack 58 ; pop_rax # deallocate stack
58 ; POP_RAX # deallocate stack 58 ; pop_rax # deallocate stack
415E ; POP_R14 # save rootdir 5E ; pop_rsi # save rootdir
# Push command line arguments onto stack
488B5F 38 ; mov_rbx,[rdi+BYTE] !56 # options = image->load_options
4889DA ; mov_rdx,rbx # save beginning of load_options
48035F 30 ; add_rbx,[rdi+BYTE] !48 # go to the end of load_options
6A 00 ; push !0 # Save end of arguments (NULL) onto stack
# :loop_options
4839D3 ; cmp_rbx,rdx # Check if we are done
74 14 ; je8 !loop_options_done # We are done
4883EB 02 ; sub_rbx, !2 # --options
8A03 ; mov_al,[rbx] # *options
3C 20 ; cmp_al, !0x20 # if *options != ' '
75 F1 ; jne8 !loop_options # then continue looping
C603 00 ; mov_[rbx], !0 # zero it
4883C3 02 ; add_rbx, !2 # ++options
53 ; push_rbx # push another argument onto stack
EB E7 ; jmp8 !loop_options # next argument
# :loop_options_done
# Open file for reading # Open file for reading
52 ; PUSH_RDX # allocate stack for fin 4158 ; pop_r8 # arg3 = in
4889E2 ; COPY_RSP_to_RDX # arg2 = &fin 52 ; push_rdx # allocate stack for fin
6A 01 ; PUSH !1 # arg5 = EFI_FILE_READ_ONLY 4889E2 ; mov_rdx,rsp # arg2 = &fin
6A 01 ; PUSH !1 # prepare to set arg4 to EFI_FILE_MODE_READ 6A 01 ; push !1 # arg5 = EFI_FILE_READ_ONLY
4159 ; POP_R9 # arg4 = EFI_FILE_MODE_READ 6A 01 ; push !1 # prepare to set arg4 to EFI_FILE_MODE_READ
4D89E0 ; COPY_R12_to_R8 # arg3 = in 4159 ; pop_r9 # arg4 = EFI_FILE_MODE_READ
4C89F1 ; COPY_R14_to_RCX # arg1 = rootdir 4889F1 ; mov_rcx,rsi # arg1 = rootdir
4883EC 20 ; SUBI8_RSP !32 # allocate shadow stack space for UEFI function 4883EC 20 ; sub_rsp, !32 # allocate shadow stack space for UEFI function
FF51 08 ; CALL_RCX_Immediate8 !8 # rootdir->open() FF51 08 ; call_[rcx+BYTE] !8 # rootdir->open()
488B7C24 28 ; LOAD64_into_RDI_from_Address_RSP_Immediate8 !40 # get fin 4883C4 28 ; add_rsp, !40 # deallocate stack
5F ; pop_rdi # get fin
# Open file for writing # Open file for writing
52 ; PUSH_RDX # allocate stack for fout 4158 ; pop_r8 # arg3 = out
4889E2 ; COPY_RSP_to_RDX # arg2 = &fout 52 ; push_rdx # allocate stack for fout
6A 00 ; PUSH !0 # arg5 = 0 4889E2 ; mov_rdx,rsp # arg2 = &fout
6A 07 ; PUSH !7 # to get 0x8000000000000003 we set the rightmost 3 bits 6A 00 ; push !0 # arg5 = 0
4159 ; POP_R9 # and then do right rotation by 1 6A 07 ; push !7 # to get 0x8000000000000003 we set the rightmost 3 bits
49D1C9 ; ROR_R9 # arg4 = EFI_FILE_MODE_CREATE| EFI_FILE_MODE_WRITE | EFI_FILE_MODE_READ 4159 ; pop_r9 # and then do right rotation by 1
4D89E8 ; COPY_R13_to_R8 # arg3 = out 49D1C9 ; ror_r9 # arg4 = EFI_FILE_MODE_CREATE| EFI_FILE_MODE_WRITE | EFI_FILE_MODE_READ
4C89F1 ; COPY_R14_to_RCX # arg1 = rootdir 4889F1 ; mov_rcx,rsi # arg1 = rootdir
4883EC 20 ; SUBI8_RSP !32 # allocate shadow stack space for UEFI function 4883EC 20 ; sub_rsp, !32 # allocate shadow stack space for UEFI function
FF51 08 ; CALL_RCX_Immediate8 !8 # rootdir->open() FF51 08 ; call_[rcx+BYTE] !8 # rootdir->open()
488B5C24 28 ; LOAD64_into_RBX_from_Address_RSP_Immediate8 !40 # get fout 4883C4 28 ; add_rsp, !40 # deallocate stack
5B ; pop_rbx # get fout
# [_start+0x107] # Save variables that are needed for cleanup
49C7C7 FFFFFFFF ; LOADI32_R15 %-1 # Our flag for byte processing 4155 ; push_r13 # save root_device
49C7C6 00000000 ; LOADI32_R14 %0 # temp storage for the sum 4156 ; push_r14 # save system->boot
49C7C5 00000000 ; LOADI32_R13 %0 # Our starting IP 4157 ; push_r15 # save image_handle
E8 2B000000 ; CALLI32 %First_pass # Process it 56 ; push_rsi # save rootdir
# Allocate pool for single-character label table
# pointer to table will be stored at the top of the stack
52 ; push_rdx # allocate stack for table
4989E0 ; mov_r8,rsp # arg3 = &table
31D2 ; xor_edx,edx # zero rdx
B6 08 ; mov_dh, !0x8 # arg2 = 256 * 8 = 2048 = 0x800
6A 02 ; push !2
59 ; pop_rcx # arg1 = EFI_LOADER_DATA
4883EC 18 ; sub_rsp, !24 # allocate shadow stack space for UEFI
41FF56 40 ; call_[r14+BYTE] !64 # system->boot->allocate_pool(EFI_LOADER_DATA, 2048, &table)
4883C4 18 ; add_rsp, !24 # deallocate stack
# [_start+0xe1]
49C7C7 FFFFFFFF ; mov_r15, %-1 # Our flag for byte processing
49C7C6 00000000 ; mov_r14, %0 # temp storage for the sum
49C7C5 00000000 ; mov_r13, %0 # Our starting IP
E8 2B000000 ; call %First_pass # Process it
# rewind input file # rewind input file
4889F9 ; COPY_RDI_to_RCX # Using our input file 4889F9 ; mov_rcx,rdi # Using our input file
31D2 ; XOR_EDX_EDX # Offset Zero 31D2 ; xor_edx,edx # Offset Zero
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 50 ; push_rax # allocate shadow stack space for UEFI function
FF51 38 ; CALL_RCX_Immediate8 !56 # fin->set_position(fin, 0) FF51 38 ; call_[rcx+BYTE] !56 # fin->set_position(fin, 0)
58 ; POP_RAX # deallocate stack 58 ; pop_rax # deallocate stack
58 ; POP_RAX # deallocate stack 58 ; pop_rax # deallocate stack
49C7C7 FFFFFFFF ; LOADI32_R15 %-1 # Our flag for byte processing 49C7C7 FFFFFFFF ; mov_r15, %-1 # Our flag for byte processing
49C7C6 00000000 ; LOADI32_R14 %0 # temp storage for the sum 49C7C6 00000000 ; mov_r14, %0 # temp storage for the sum
49C7C5 00000000 ; LOADI32_R13 %0 # Our starting IP 49C7C5 00000000 ; mov_r13, %0 # Our starting IP
E8 EF000000 ; CALLI32 %Second_pass # Process it E8 EF000000 ; call %Second_pass # Process it
E9 35020000 ; JMP32 %Done E9 34020000 ; jmp %Done
# :First_pass [_start+0x14C] # :First_pass [_start+0x126]
E8 BB010000 ; CALLI32 %Read_byte E8 BA010000 ; call %Read_byte
# Deal with EOF # Deal with EOF
483D FCFFFFFF ; CMPI32_RAX %-4 483D FCFFFFFF ; cmp_rax, %-4
0F84 67000000 ; JE32 %First_pass_done 0F84 67000000 ; je %First_pass_done
# Check for : # Check for :
483D 3A000000 ; CMPI32_RAX %0x3a 483D 3A000000 ; cmp_rax, %0x3a
0F85 05000000 ; JNE32 %First_pass_0 0F85 05000000 ; jne %First_pass_0
# Deal with label # Deal with label
E8 EB010000 ; CALLI32 %StoreLabel E8 EA010000 ; call %StoreLabel
# :First_pass_0 [_start+0x16E] # :First_pass_0 [_start+0x148]
# Check for % # Check for %
483D 25000000 ; CMPI32_RAX %0x25 483D 25000000 ; cmp_rax, %0x25
0F84 39000000 ; JE32 %First_pass_pointer 0F84 39000000 ; je %First_pass_pointer
# Deal with everything else # Deal with everything else
E8 46000000 ; CALLI32 %hex # Process our char E8 46000000 ; call %hex # Process our char
# Deal with EOF # Deal with EOF
483D FCFFFFFF ; CMPI32_RAX %-4 483D FCFFFFFF ; cmp_rax, %-4
0F84 39000000 ; JE32 %First_pass_done 0F84 39000000 ; je %First_pass_done
# deal with -1 values # deal with -1 values
483D 00000000 ; CMPI32_RAX %0 483D 00000000 ; cmp_rax, %0
0F8C B5FFFFFF ; JL32 %First_pass 0F8C B5FFFFFF ; jl %First_pass
# deal with toggle # deal with toggle
4981FF 00000000 ; CMPI32_R15 %0 4981FF 00000000 ; cmp_r15, %0
0F84 07000000 ; JE32 %First_pass_1 0F84 07000000 ; je %First_pass_1
4981C5 01000000 ; ADDI32_to_R13 %1 # Increment IP 4981C5 01000000 ; add_r13, %1 # Increment IP
# :First_pass_1 [_start+0xAB] # :First_pass_1 [_start+0x185]
49F7D7 ; NOT_R15 49F7D7 ; not_r15
E9 99FFFFFF ; JMP32 %First_pass E9 99FFFFFF ; jmp %First_pass
# :First_pass_pointer [_start+0x1B3] # :First_pass_pointer [_start+0x18D]
# Deal with Pointer to label # Deal with Pointer to label
E8 54010000 ; CALLI32 %Read_byte # Drop the char E8 53010000 ; call %Read_byte # Drop the char
4981C5 04000000 ; ADDI32_to_R13 %4 # Increment IP 4981C5 04000000 ; add_r13, %4 # Increment IP
E9 88FFFFFF ; JMP32 %First_pass # Loop again E9 88FFFFFF ; jmp %First_pass # Loop again
# :First_pass_done [_start+0x1C4] # :First_pass_done [_start+0x19E]
C3 ; RET C3 ; ret
# :hex [_start+0x1C5] # :hex [_start+0x19F]
# deal with EOF # deal with EOF
483D FCFFFFFF ; CMPI32_RAX %-4 483D FCFFFFFF ; cmp_rax, %-4
0F84 DC000000 ; JE32 %EOF 0F84 DB000000 ; je %EOF
# deal with line comments starting with # # deal with line comments starting with #
483D 23000000 ; CMPI32_RAX %0x23 483D 23000000 ; cmp_rax, %0x23
0F84 E8000000 ; JE32 %ascii_comment 0F84 E7000000 ; je %ascii_comment
# deal with line comments starting with ; # deal with line comments starting with ;
483D 3B000000 ; CMPI32_RAX %0x3b 483D 3B000000 ; cmp_rax, %0x3b
0F84 DC000000 ; JE32 %ascii_comment 0F84 DB000000 ; je %ascii_comment
# deal all ascii less than 0 # deal all ascii less than 0
483D 30000000 ; CMPI32_RAX %0x30 483D 30000000 ; cmp_rax, %0x30
0F8C C8000000 ; JL32 %ascii_other 0F8C C7000000 ; jl %ascii_other
# deal with 0-9 # deal with 0-9
483D 3A000000 ; CMPI32_RAX %0x3a 483D 3A000000 ; cmp_rax, %0x3a
0F8C AD000000 ; JL32 %ascii_num 0F8C AC000000 ; jl %ascii_num
# deal with all ascii less than A # deal with all ascii less than A
483D 41000000 ; CMPI32_RAX %0x41 483D 41000000 ; cmp_rax, %0x41
0F8C B0000000 ; JL32 %ascii_other 0F8C AF000000 ; jl %ascii_other
# deal with A-F # deal with A-F
483D 47000000 ; CMPI32_RAX %0x47 483D 47000000 ; cmp_rax, %0x47
0F8C 9F000000 ; JL32 %ascii_high 0F8C 9E000000 ; jl %ascii_high
# deal with all ascii less than a # deal with all ascii less than a
483D 61000000 ; CMPI32_RAX %0x61 483D 61000000 ; cmp_rax, %0x61
0F8C 98000000 ; JL32 %ascii_other 0F8C 97000000 ; jl %ascii_other
# deal with a-f # deal with a-f
483D 67000000 ; CMPI32_RAX %0x67 483D 67000000 ; cmp_rax, %0x67
0F8C 82000000 ; JL32 %ascii_low 0F8C 81000000 ; jl %ascii_low
# The rest that remains needs to be ignored # The rest that remains needs to be ignored
E9 87000000 ; JMP32 %ascii_other E9 86000000 ; jmp %ascii_other
# :Second_pass [_start+0x236] # :Second_pass [_start+0x210]
E8 D1000000 ; CALLI32 %Read_byte E8 D0000000 ; call %Read_byte
# Deal with EOF # Deal with EOF
483D FCFFFFFF ; CMPI32_RAX %-4 483D FCFFFFFF ; cmp_rax, %-4
0F84 65000000 ; JE32 %Second_pass_done 0F84 65000000 ; je %Second_pass_done
# Simply drop the label # Simply drop the label
483D 3A000000 ; CMPI32_RAX %0x3a 483D 3A000000 ; cmp_rax, %0x3a
0F85 0A000000 ; JNE32 %Second_pass_0 0F85 0A000000 ; jne %Second_pass_0
E8 B4000000 ; CALLI32 %Read_byte E8 B3000000 ; call %Read_byte
E9 D9FFFFFF ; JMP32 %Second_pass E9 D9FFFFFF ; jmp %Second_pass
# :Second_pass_0 [_start+0x25D] # :Second_pass_0 [_start+0x237]
# Deal with % pointer # Deal with % pointer
483D 25000000 ; CMPI32_RAX %0x25 483D 25000000 ; cmp_rax, %0x25
0F85 0A000000 ; JNE32 %Second_pass_1 0F85 0A000000 ; jne %Second_pass_1
E8 F4000000 ; CALLI32 %StorePointer E8 F3000000 ; call %StorePointer
E9 C3FFFFFF ; JMP32 %Second_pass E9 C3FFFFFF ; jmp %Second_pass
# :Second_pass_1 [_start+0x273] # :Second_pass_1 [_start+0x24D]
# Deal with everything else # Deal with everything else
E8 4DFFFFFF ; CALLI32 %hex # Process our char E8 4DFFFFFF ; call %hex # Process our char
# Deal with EOF # Deal with EOF
483D FCFFFFFF ; CMPI32_RAX %-4 483D FCFFFFFF ; cmp_rax, %-4
0F84 28000000 ; JE32 %Second_pass_done 0F84 28000000 ; je %Second_pass_done
# deal with -1 values # deal with -1 values
483D 00000000 ; CMPI32_RAX %0 483D 00000000 ; cmp_rax, %0
0F8C A6FFFFFF ; JL32 %Second_pass 0F8C A6FFFFFF ; jl %Second_pass
# deal with toggle # deal with toggle
4981FF 00000000 ; CMPI32_R15 %0 4981FF 00000000 ; cmp_r15, %0
0F84 4D000000 ; JE32 %print 0F84 4C000000 ; je %print
# process first byte of pair # process first byte of pair
4989C6 ; COPY_RAX_to_R14 4989C6 ; mov_r14,rax
49C7C7 00000000 ; LOADI32_R15 %0 49C7C7 00000000 ; mov_r15, %0
E9 8AFFFFFF ; JMP32 %Second_pass E9 8AFFFFFF ; JMP32 %Second_pass
# :Second_pass_done [_start+0x2AC] # :Second_pass_done [_start+0x286]
C3 ; RET # :EOF
C3 ; ret
# :EOF [_start+0x2AD] # :ascii_num [_start+0x287]
C3 ; RET 4883E8 30 ; sub_rax, !0x30
# :ascii_num [_start+0x2AE] C3 ; ret
4883E8 30 ; SUBI8_from_RAX !0x30 # :ascii_low [_start+0x28C]
C3 ; RET 4883E8 57 ; sub_rax, !0x57
# :ascii_low [_start+0x2B3] C3 ; ret
4883E8 57 ; SUBI8_from_RAX !0x57 # :ascii_high [_start+0x291]
C3 ; RET 4883E8 37 ; sub_rax, !0x37
# :ascii_high [_start+0x2B8] C3 ; ret
4883E8 37 ; SUBI8_from_RAX !0x37 # :ascii_other [_start+0x296]
C3 ; RET 48C7C0 FFFFFFFF ; mov_rax, %-1
# :ascii_other [_start+0x2BD] C3 ; ret
48C7C0 FFFFFFFF ; LOADI32_RAX %-1 # :ascii_comment [_start+0x29E]
C3 ; RET E8 42000000 ; call %Read_byte
# :ascii_comment [_start+0x2C5] 483D 0D000000 ; cmp_rax, %0xd
E8 42000000 ; CALLI32 %Read_byte 0F84 0C000000 ; je %ascii_comment_cr
483D 0D000000 ; CMPI32_RAX %0xd 483D 0A000000 ; cmp_rax, %0xa
0F84 0C000000 ; JE32 %ascii_comment_cr 0F85 E3FFFFFF ; jne %ascii_comment
483D 0A000000 ; CMPI32_RAX %0xa # :ascii_comment_cr [_start+0x2BB]
0F85 E3FFFFFF ; JNE32 %ascii_comment 48C7C0 FFFFFFFF ; mov_rax, %-1
# :ascii_comment_cr [_start+0x2E2] C3 ; ret
48C7C0 FFFFFFFF ; LOADI32_RAX %-1
C3 ; RET
# process second byte of pair # process second byte of pair
# :print [_start+0x2EA] # :print [_start+0x2C3]
# update the sum and store in output # update the sum and store in output
49C1E6 04 ; SHL8_R14 !4 49C1E6 04 ; shl_r14, !4
4C01F0 ; ADD_R14_to_RAX 4C01F0 ; add_rax,r14
# flip the toggle # flip the toggle
49F7D7 ; NOT_R15 # R15 = -1 49F7D7 ; not_r15 # R15 = -1
48C7C2 01000000 ; LOADI32_RDX %1 # set the size of chars we want 48C7C2 01000000 ; mov_rdx, %1 # set the size of chars we want
E8 2F000000 ; CALLI32 %print_chars E8 31000000 ; call %print_chars
4981C5 01000000 ; ADDI32_to_R13 %1 # Increment IP 4981C5 01000000 ; add_r13, %1 # Increment IP
E9 2AFFFFFF ; JMP32 %Second_pass E9 2BFFFFFF ; jmp %Second_pass
# :Read_byte [_start+0x30C] # :Read_byte [_start+0x2E5]
4889F9 ; COPY_RDI_to_RCX # arg1 = fin 4889F9 ; mov_rcx,rdi # arg1 = fin
6A 01 ; PUSH !1 # size = 1 6A 01 ; push !1 # size = 1
4889E2 ; COPY_RSP_to_RDX # arg2 = &size 4889E2 ; mov_rdx,rsp # arg2 = &size
56 ; PUSH_RSI # allocate stack 31F6 ; xor_esi,esi # zero rsi
4989E0 ; COPY_RSP_to_R8 # arg3 = &input 56 ; push_rsi # allocate stack
50 ; PUSH_RAX # allocate shadow stack space for UEFI function 4989E0 ; mov_r8,rsp # 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 50 ; push_rax # allocate shadow stack space for UEFI function
FF51 20 ; CALL_RCX_Immediate8 !32 # fin->read() 50 ; push_rax # allocate shadow stack space for UEFI function
58 ; POP_RAX # deallocate stack FF51 20 ; call_[rcx+BYTE] !32 # fin->read()
58 ; POP_RAX # deallocate stack 58 ; pop_rax # deallocate stack
58 ; POP_RAX # deallocate stack 58 ; pop_rax # deallocate stack
58 ; POP_RAX # save input to rax 58 ; pop_rax # deallocate stack
5E ; POP_RSI # save size to rsi 58 ; pop_rax # save input to rax
5E ; pop_rsi # save size to rsi
# If the file ended (0 bytes read) return EOF # If the file ended (0 bytes read) return EOF
85F6 ; TEST_ESI_ESI # if size = 0 85F6 ; test_esi,esi # if size = 0
75 07 ; JNE8 !Read_byte_1 75 07 ; jne8 !Read_byte_1
48C7C0 FCFFFFFF ; LOADI32_RAX %-4 # Put EOF in rax 48C7C0 FCFFFFFF ; mov_rax, %-4 # Put EOF in rax
# :Read_byte_1 [_start+0x32E] # :Read_byte_1 [_start+0x309]
C3 ; RET # return C3 ; ret # return
# Writes bytes stored in rax # Writes bytes stored in rax
# :print_chars [_start+0x32F] # :print_chars [_start+0x30A]
4889D9 ; COPY_RBX_to_RCX # arg1 = fout 4889D9 ; mov_rcx,rbx # arg1 = fout
52 ; PUSH_RDX # set size 52 ; push_rdx # set size
4889E2 ; COPY_RSP_to_RDX # arg2 = &size 4889E2 ; mov_rdx,rsp # arg2 = &size
50 ; PUSH_RAX # allocate stack 50 ; push_rax # allocate stack
4989E0 ; COPY_RSP_to_R8 # arg3 = &output 4989E0 ; mov_r8,rsp # 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 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
FF51 28 ; CALL_RCX_Immediate8 !40 # fout->write() FF51 28 ; call_[rcx+BYTE] !40 # fout->write()
4883C4 28 ; ADDI8_RSP !40 # deallocate stack 4883C4 28 ; add_rsp, !40 # deallocate stack
C3 ; RET # return C3 ; ret # return
# :Get_table_target [_start+0x345] # :Get_table_target [_start+0x320]
E8 C2FFFFFF ; CALLI32 %Read_byte # Get single char label E8 C0FFFFFF ; call %Read_byte # Get single char label
48C1E0 03 ; SHL8_RAX !3 # Each label in table takes 8 bytes to store 48C1E0 03 ; shl_rax, !3 # Each label in table takes 8 bytes to store
488B0D 6F000000 ; LOAD64_rel_RCX %table # Get table 488B4C24 18 ; mov_rcx,[rsp+BYTE] !24 # Get table
4801C8 ; ADD_RCX_to_RAX # Calculate offset 4801C8 ; add_rax,rcx # Calculate offset
C3 ; RET C3 ; ret
# :StoreLabel [_start+0x359] # :StoreLabel [_start+0x332]
E8 E7FFFFFF ; CALLI32 %Get_table_target E8 E9FFFFFF ; call %Get_table_target
4C8928 ; STORE32_R13_to_Address_in_RAX # Write out pointer to table 4C8928 ; mov_[rax],r13 # Write out pointer to table
C3 ; RET C3 ; ret
# :StorePointer [_start+0x362] # :StorePointer [_start+0x33B]
4981C5 04000000 ; ADDI32_to_R13 %4 # Increment IP 4981C5 04000000 ; add_r13, %4 # Increment IP
E8 D7FFFFFF ; CALLI32 %Get_table_target # Get address of pointer E8 D9FFFFFF ; call %Get_table_target # Get address of pointer
678B00 ; LOAD32_Address_in_RAX_into_RAX # Get pointer 488B00 ; mov_rax,[rax] # Get pointer
4C29E8 ; SUB_R13_from_RAX # target - ip 4C29E8 ; sub_rax,r13 # target - ip
48C7C2 04000000 ; LOADI32_RDX %4 # set the size of chars we want 48C7C2 04000000 ; mov_rdx, %4 # set the size of chars we want
E8 AFFFFFFF ; CALLI32 %print_chars E8 B1FFFFFF ; call %print_chars
C3 ; RET C3 ; ret
# :Done [_start+0x35A]
59 ; pop_rcx # restore table
5E ; pop_rsi # restore rootdir
415F ; pop_r15 # restore image_handle
415E ; pop_r14 # restore system->boot
415D ; pop_r13 # restore root_device
# :Done [_start+0x381]
# Free pool # Free pool
488B0D 3C000000 ; LOAD64_rel_RCX %table # arg1 = table # arg1 = table
50 ; PUSH_RAX # allocate shadow stack space for UEFI function 50 ; push_rax # allocate shadow stack space for UEFI function
4C8B35 3C000000 ; LOAD64_rel_R14 %SystemBoot # get system->boot 41FF56 48 ; call_[r14+BYTE] !72 # system->boot->free_pool(table)
41FF56 48 ; CALL_R14_Immediate8 !72 # system->boot->free_pool(table)
4889F9 ; COPY_RDI_to_RCX # arg1 = fin 4889F9 ; mov_rcx,rdi # arg1 = fin
FF51 10 ; CALL_RCX_Immediate8 !16 # fin->close() FF51 10 ; call_[rcx+BYTE] !16 # fin->close()
4889D9 ; COPY_RBX_to_RCX # arg1 = fout 4889D9 ; mov_rcx,rbx # arg1 = fout
FF51 10 ; CALL_RCX_Immediate8 !16 # fout->close() FF51 10 ; call_[rcx+BYTE] !16 # fout->close()
4889F1 ; mov_rcx,rsi # arg1 = rootdir
FF51 10 ; call_[rcx+BYTE] !16 # rootdir->close()
4889EC ; COPY_RBP_to_RSP # restore stack 4D89F8 ; mov_r8,r15 # arg3 = image_handle
C3 ; RET # return to UEFI 488D15 3C000000 ; lea_rdx,[rip+DWORD] %SIMPLE_FS_PROTOCOL # guid = &SIMPLE_FS_PROTOCOL
4C89E9 ; mov_rcx,r13 # arg1 = root_device
4D31C9 ; xor_r9,r9 # arg4 = NULL
4883EC 20 ; sub_rsp, !32 # allocate shadow stack space for UEFI function
41FF96 20010000 ; call_[r14+DWORD] %288 # system->boot->close_protocol(root_device, &guid, image_handle, 0)
4D89F8 ; mov_r8,r15 # arg3 = image_handle
488D15 11000000 ; lea_rdx,[rip+DWORD] %LOADED_IMAGE_PROTOCOL # guid = &LOADED_IMAGE_PROTOCOL
4C89C1 ; mov_rcx,r8 # arg1 = image_handle
4D31C9 ; xor_r9,r9 # arg4 = NULL
41FF96 20010000 ; call_[r14+DWORD] %288 # system->boot->close_protocol(image_handle, &guid, image_handle, 0)
4889EC ; mov_rsp,rbp # restore stack
C3 ; ret # return to UEFI
# Protocol GUIDs # Protocol GUIDs
# :LOADED_IMAGE_PROTOCOL [_start+0x3A4] # :LOADED_IMAGE_PROTOCOL [_start+0x3AF]
A1 31 1B 5B ; %0x5b1b31a1 A1 31 1B 5B ; %0x5b1b31a1
62 95 ; @0x9562 62 95 ; @0x9562
D2 11 ; @0x11d2 D2 11 ; @0x11d2
# :LOADED_IMAGE_PROTOCOL_8 [_start+0x3AC]
8E 3F 00 A0 C9 69 72 3B ; !0x8e !0x3f !0 !0xa0 !0xc9 !0x69 !0x72 !0x3b 8E 3F 00 A0 C9 69 72 3B ; !0x8e !0x3f !0 !0xa0 !0xc9 !0x69 !0x72 !0x3b
# :SIMPLE_FS_PROTOCOL [_start+0x3B4] # :SIMPLE_FS_PROTOCOL [_start+0x3BF]
22 5B 4E 96 ; %0x0964e5b22 22 5B 4E 96 ; %0x0964e5b22
59 64 ; @0x6459 59 64 ; @0x6459
D2 11 ; @0x11d2 D2 11 ; @0x11d2
# :SIMPLE_FS_PROTOCOL_8 [_start+0x3BC]
8E 39 00 A0 C9 69 72 3B ; !0x8e !0x39 !0 !0xa0 !0xc9 !0x69 !0x72 !0x3b 8E 39 00 A0 C9 69 72 3B ; !0x8e !0x39 !0 !0xa0 !0xc9 !0x69 !0x72 !0x3b
# :table [_start+0x3C4] # :PE32_end [_start+0x3CF]
00000000 00000000
# :SystemBoot [_start+0x3CC]
00000000 00000000
# :PE32_end [_start+0x3D4]

2
amd64/mescc-tools-mini-kaem.kaem
View File

@ -14,7 +14,7 @@ amd64\artifact\hex0.efi amd64\hex1.hex0 amd64\artifact\hex1.efi
################################# #################################
# Phase-2 Build hex2 from hex1 # # Phase-2 Build hex2 from hex1 #
################################# #################################
amd64\artifact\hex1.efi amd64\hex2.hex1 amd64\artifact\hex2-0.efi amd64\artifact\hex1.efi amd64\hex2.hex1 amd64\artifact\hex2-0.efi
# hex2 adds support for long labels and absolute addresses thus allowing it # hex2 adds support for long labels and absolute addresses thus allowing it
# to function as an effective linker for later stages of the bootstrap # to function as an effective linker for later stages of the bootstrap
# This is a minimal version which will be used to bootstrap a much more advanced # This is a minimal version which will be used to bootstrap a much more advanced