701 lines
24 KiB
ArmAsm
701 lines
24 KiB
ArmAsm
# SPDX-FileCopyrightText: 2022 Andrius Štikonas <andrius@stikonas.eu>
|
|
# SPDX-FileCopyrightText: 2017 Jeremiah Orians <jeremiah@pdp10.guru>
|
|
#
|
|
# SPDX-License-Identifier: GPL-3.0-or-later
|
|
|
|
.intel_syntax noprefix
|
|
.global _start
|
|
.text
|
|
|
|
# Register usage:
|
|
# R15 => Flag
|
|
# R14 => High bits
|
|
# R13 => IP
|
|
# R12 => MALLOC
|
|
# R11 => HEAD
|
|
|
|
# Struct format: (size 24)
|
|
# NEXT => 0
|
|
# TARGET => 8
|
|
# NAME => 16
|
|
|
|
# efi_main(void *image_handle, struct efi_system_table *system)
|
|
_start:
|
|
mov rbp, rsp # save stack pointer
|
|
mov [rip+image_handle], rcx # save image_handle
|
|
mov r14, [rdx+96] # system->boot
|
|
mov [rip+SystemBoot], r14 # save system->boot
|
|
|
|
# Open Loaded Image protocol
|
|
mov r9, [rip+image_handle] # arg4 = image_handle
|
|
lea rdx, [rip+LOADED_IMAGE_PROTOCOL] # guid = &LOADED_IMAGE_PROTOCOL
|
|
mov rcx, r9 # arg1 = image_handle
|
|
call open_protocol # open protocol
|
|
mov rdi, rax # save image
|
|
|
|
# Get root file system
|
|
mov r9, [rip+image_handle] # arg4 = image_handle
|
|
lea rdx, [rip+SIMPLE_FS_PROTOCOL] # guid = &SIMPLE_FS_PROTOCOL
|
|
mov rcx, [rdi+24] # arg1 = root_device = image->device
|
|
mov [rip+root_device], rcx # save root_device
|
|
call open_protocol # open protocol
|
|
mov rcx, rax # get rootfs
|
|
|
|
# Get root directory
|
|
lea rdx, [rip+rootdir] # 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
|
|
|
|
# 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 1 # Set exit code in case of failure
|
|
cmp r8, 0 # If NULL
|
|
je failed_input # then exit
|
|
lea rdx, [rip+fin] # 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, [rip+rootdir] # arg1 = rootdir
|
|
sub rsp, 32 # allocate shadow stack space for UEFI function
|
|
call [rcx+8] # rootdir->open()
|
|
cmp rax, 0 # If failed to open
|
|
jne failed_input # then exit
|
|
add rsp, 48 # deallocate stack
|
|
|
|
# Open file for writing
|
|
pop r8 # arg3 = out
|
|
push 1 # Set exit code in case of failure
|
|
cmp r8, 0 # If NULL
|
|
je failed_output # then exit
|
|
lea rdx, [rip+fout] # 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, [rip+rootdir] # arg1 = rootdir
|
|
sub rsp, 32 # allocate shadow stack space for UEFI function
|
|
call [rcx+8] # rootdir->open()
|
|
add rsp, 48 # deallocate stack
|
|
|
|
# Allocate ourselves 16 MiB of memory
|
|
mov rdx, 0x1000000 # allocate 16 MiB of memory
|
|
call allocate_pool
|
|
mov [rip+scratch], rax # Allocate space for scratch area
|
|
add rax, 0x800 # 2 KiB of scratch
|
|
mov r12, rax # save structs pointer
|
|
|
|
call ClearScratch # Zero scratch
|
|
mov r15, -1 # Our flag for byte processing
|
|
mov r14, 0 # temp storage for the sum
|
|
mov r13, 0x00600000 # Our starting IP
|
|
mov r11, 0 # HEAD = NULL
|
|
call First_pass # Process it
|
|
|
|
# rewind input file
|
|
push r11 # Protect r11
|
|
mov rcx, [rip+fin] # Using our input file
|
|
xor edx, edx # Offset Zero
|
|
push rax # allocate shadow stack space for UEFI function
|
|
push rax # allocate shadow stack space for UEFI function
|
|
call [rcx+56] # fin->set_position(fin, 0)
|
|
pop rax # deallocate stack
|
|
pop rax # deallocate stack
|
|
pop r11 # restore r11
|
|
|
|
mov r15, -1 # Our flag for byte processing
|
|
mov r14, 0 # temp storage for the sum
|
|
mov r13, 0x00600000 # Our starting IP
|
|
call Second_pass # Process it
|
|
|
|
jmp Done
|
|
|
|
|
|
First_pass:
|
|
call Read_byte
|
|
|
|
# Deal with EOF
|
|
cmp rax, -4
|
|
je First_pass_done
|
|
|
|
# Check for :
|
|
cmp rax, 0x3a
|
|
jne First_pass_0
|
|
|
|
# Deal with label
|
|
jmp StoreLabel
|
|
|
|
First_pass_0:
|
|
# Check for !
|
|
cmp rax, 0x21
|
|
je First_pass_pointer
|
|
|
|
# Check for @
|
|
cmp rax, 0x40
|
|
je First_pass_pointer
|
|
|
|
# Check for $
|
|
cmp rax, 0x24
|
|
je First_pass_pointer
|
|
|
|
# Check for %
|
|
cmp rax, 0x25
|
|
je First_pass_pointer
|
|
|
|
# Check for &
|
|
cmp rax, 0x26
|
|
je First_pass_pointer
|
|
|
|
# Deal with everything else
|
|
call hex # Process our char
|
|
|
|
# Deal with EOF
|
|
cmp rax, -4
|
|
je First_pass_done
|
|
|
|
# deal with -1 values
|
|
cmp rax, 0
|
|
jl First_pass
|
|
|
|
# deal with toggle
|
|
cmp r15, 0
|
|
je First_pass_1
|
|
add r13, 1 # Increment IP
|
|
|
|
First_pass_1:
|
|
not r15
|
|
jmp First_pass
|
|
|
|
Update_Pointer:
|
|
# Check for !
|
|
cmp rax, 0x21
|
|
je Update_Pointer_1
|
|
|
|
# Check for @
|
|
cmp rax, 0x40
|
|
je Update_Pointer_2
|
|
|
|
# Check for $
|
|
cmp rax, 0x24
|
|
je Update_Pointer_2
|
|
|
|
# Check for %
|
|
cmp rax, 0x25
|
|
je Update_Pointer_4
|
|
|
|
# Check for &
|
|
cmp rax, 0x26
|
|
je Update_Pointer_4
|
|
|
|
# deal with bad input
|
|
call fail
|
|
|
|
Update_Pointer_4:
|
|
add r13, 2 # Increment IP
|
|
Update_Pointer_2:
|
|
add r13, 1 # Increment IP
|
|
Update_Pointer_1:
|
|
add r13, 1 # Increment IP
|
|
ret
|
|
|
|
First_pass_pointer:
|
|
# Deal with Pointer to label
|
|
call Update_Pointer # Increment IP
|
|
mov rbx, [rip+scratch] # Using scratch
|
|
call consume_token # Read token
|
|
call ClearScratch # Throw away token
|
|
cmp rax, 0x3E # check for '>'
|
|
jne First_pass # Loop again
|
|
|
|
# Deal with %label>label case
|
|
mov rbx, [rip+scratch] # Write to scratch
|
|
call consume_token # get token
|
|
call ClearScratch # Clean up after ourselves
|
|
jmp First_pass # Loop again
|
|
|
|
First_pass_done:
|
|
ret
|
|
|
|
hex:
|
|
# deal with EOF
|
|
cmp rax, -4
|
|
je EOF
|
|
# deal with line comments starting with #
|
|
cmp rax, 0x23
|
|
je ascii_comment
|
|
# deal with line comments starting with ;
|
|
cmp rax, 0x3b
|
|
je ascii_comment
|
|
# deal all ascii less than 0
|
|
cmp rax, 0x30
|
|
jl ascii_other
|
|
# deal with 0-9
|
|
cmp rax, 0x3a
|
|
jl ascii_num
|
|
# deal with all ascii less than A
|
|
cmp rax, 0x41
|
|
jl ascii_other
|
|
# deal with A-F
|
|
cmp rax, 0x47
|
|
jl ascii_high
|
|
# deal with all ascii less than a
|
|
cmp rax, 0x61
|
|
jl ascii_other
|
|
# deal with a-f
|
|
cmp rax, 0x67
|
|
jl ascii_low
|
|
# The rest that remains needs to be ignored
|
|
jmp ascii_other
|
|
|
|
Second_pass:
|
|
call Read_byte
|
|
|
|
# Deal with EOF
|
|
cmp rax, -4
|
|
je Second_pass_done
|
|
|
|
# Simply drop the label
|
|
cmp rax, 0x3a
|
|
jne Second_pass_0
|
|
|
|
mov rbx, [rip+scratch] # Using scratch
|
|
call consume_token # Read token
|
|
call ClearScratch # Throw away token
|
|
|
|
jmp Second_pass
|
|
|
|
Second_pass_0:
|
|
# Deal with % pointer
|
|
cmp rax, 0x25
|
|
je StorePointer_rel4
|
|
|
|
# Deal with @ pointer
|
|
cmp rax, 0x40
|
|
je StorePointer_rel2
|
|
|
|
# Deal with ! pointer
|
|
cmp rax, 0x21
|
|
je StorePointer_rel1
|
|
|
|
# Deal with & pointer
|
|
cmp rax, 0x26
|
|
je StorePointer_abs4
|
|
|
|
# Deal with $ pointer
|
|
cmp rax, 0x24
|
|
je StorePointer_abs2
|
|
|
|
Second_pass_1:
|
|
# Deal with everything else
|
|
call hex # Process our char
|
|
|
|
# Deal with EOF
|
|
cmp rax, -4
|
|
je Second_pass_done
|
|
|
|
# deal with -1 values
|
|
cmp rax, 0
|
|
jl Second_pass
|
|
|
|
# deal with toggle
|
|
cmp r15, 0
|
|
je print
|
|
|
|
# process first byte of pair
|
|
mov r14, rax
|
|
mov r15, 0
|
|
jmp Second_pass
|
|
|
|
Second_pass_done:
|
|
EOF:
|
|
ret
|
|
ascii_num:
|
|
sub rax, 0x30
|
|
ret
|
|
ascii_low:
|
|
sub rax, 0x57
|
|
ret
|
|
ascii_high:
|
|
sub rax, 0x37
|
|
ret
|
|
ascii_other:
|
|
mov rax, -1
|
|
ret
|
|
ascii_comment:
|
|
call Read_byte
|
|
cmp rax, 0xd
|
|
je ascii_comment_cr
|
|
cmp rax, 0xa
|
|
jne ascii_comment
|
|
ascii_comment_cr:
|
|
mov rax, -1
|
|
ret
|
|
|
|
# process second byte of pair
|
|
print:
|
|
# update the sum and store in output
|
|
shl r14, 4
|
|
add rax, r14
|
|
|
|
# flip the toggle
|
|
not r15 # r15 = -1
|
|
|
|
mov rdx, 1 # set the size of chars we want
|
|
call print_chars
|
|
|
|
add r13, 1 # Increment IP
|
|
jmp Second_pass
|
|
|
|
|
|
Read_byte:
|
|
push r11 # Protect r11
|
|
mov rcx, [rip+fin] # arg1 = fin
|
|
push 1 # size = 1
|
|
mov rdx, rsp # arg2 = &size
|
|
xor esi, esi # zero rsi
|
|
push rsi # allocate stack
|
|
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
|
|
call [rcx+32] # fin->read()
|
|
pop rax # deallocate stack
|
|
pop rax # deallocate stack
|
|
pop rax # deallocate stack
|
|
pop rax # save input to rax
|
|
pop rsi # save size to rsi
|
|
pop r11 # restore r11
|
|
|
|
# If the file ended (0 bytes read) return EOF
|
|
test esi, esi # if size == 0
|
|
jne Read_byte_1
|
|
mov rax, -4 # Put EOF in rax
|
|
|
|
Read_byte_1:
|
|
ret # return
|
|
|
|
# Writes bytes stored in rax
|
|
print_chars:
|
|
push r11 # Protect r11
|
|
mov rcx, [rip+fout] # arg1 = fout
|
|
push rdx # set size
|
|
mov rdx, rsp # arg2 = &size
|
|
push rax # allocate stack
|
|
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
|
|
call [rcx+40] # fout->write()
|
|
add rsp, 40 # deallocate stack
|
|
pop r11 # restore r11
|
|
|
|
ret # return
|
|
|
|
# Receives pointer in RBX
|
|
# Writes out char and updates RBX
|
|
consume_token:
|
|
call Read_byte # Consume_token
|
|
|
|
# Check for \t
|
|
cmp rax, 0x09
|
|
je consume_token_done
|
|
|
|
# Check for \n
|
|
cmp rax, 0x0A
|
|
je consume_token_done
|
|
|
|
# Check for ' '
|
|
cmp rax, 0x20
|
|
je consume_token_done
|
|
|
|
# Check for '>'
|
|
cmp rax, 0x3E
|
|
je consume_token_done
|
|
|
|
# Looks like we are still reading token
|
|
mov [rbx], al # Store char
|
|
add rbx, 1 # Point to next spot
|
|
jmp consume_token # loop until done
|
|
|
|
consume_token_done:
|
|
mov rcx, 0 # Pad with nulls
|
|
mov [rbx], rcx
|
|
add rbx, 8
|
|
ret
|
|
|
|
StoreLabel:
|
|
mov rax, r12 # ENTRY
|
|
add r12, 24 # CALLOC
|
|
mov [rax+8], r13 # ENTRY->TARGET = IP
|
|
mov [rax], r11 # ENTRY->NEXT = JUMP_TABLE
|
|
mov r11, rax # JUMP_TABLE = ENTRY
|
|
mov [r11+16], r12 # ENTRY->NAME = TOKEN
|
|
mov rbx, r12 # Write Starting after struct
|
|
call consume_token # Collect whole string
|
|
mov r12, rbx # Update HEAP
|
|
jmp First_pass
|
|
|
|
GetTarget:
|
|
mov rdi, [rip+scratch] # Reset scratch
|
|
mov rcx, r11 # Grab JUMP_TABLE
|
|
mov rsi, [rcx+16] # I->NAME
|
|
GetTarget_loop:
|
|
mov al, [rsi] # I->NAME[0]
|
|
mov bl, [rdi] # scratch[0]
|
|
movzx rbx, bl # Zero extend
|
|
movzx rax, al # Zero extend
|
|
cmp al, bl # IF TOKEN == I->NAME
|
|
jne GetTarget_miss # Oops
|
|
|
|
add rsi, 1
|
|
add rdi, 1
|
|
cmp al, 0
|
|
jne GetTarget_loop # Loop until
|
|
jmp GetTarget_done # Match
|
|
|
|
# Miss
|
|
GetTarget_miss:
|
|
mov rcx, [rcx] # I = I->NEXT
|
|
cmp rcx, 0 # IF NULL == I
|
|
je fail # Abort hard
|
|
|
|
mov rsi, [rcx+16] # I->NAME
|
|
mov rdi, [rip+scratch] # Reset scratch
|
|
jmp GetTarget_loop
|
|
|
|
GetTarget_done:
|
|
mov rax, [rcx+8] # Get address
|
|
ret
|
|
|
|
ClearScratch:
|
|
push rax # Protect against changes
|
|
push rbx # And overwrites
|
|
push rcx
|
|
push rdx # While we work
|
|
mov rbx, [rip+scratch] # Where our scratch area is
|
|
mov al, 0 # Using null
|
|
|
|
mov rdx, rbx # Get scratch
|
|
add rdx, 0x800 # end of scratch area
|
|
|
|
ClearScratch_loop:
|
|
cmp rbx, rdx # Make sure
|
|
je ClearScratch_end # we do not overflow
|
|
|
|
mov rcx, [rbx] # Get current value
|
|
mov [rbx], al # Because we want null
|
|
add rbx, 1 # Increment
|
|
cmp rcx, 0 # Check if we hit null
|
|
jne ClearScratch_loop # Keep looping
|
|
|
|
ClearScratch_end:
|
|
pop rdx
|
|
pop rcx # Don't Forget to
|
|
pop rbx # Restore Damage
|
|
pop rax # Entirely
|
|
ret
|
|
|
|
StorePointer:
|
|
call Update_Pointer # Increment IP
|
|
mov rbx, [rip+scratch] # Write to scratch
|
|
call consume_token # get token
|
|
push rax # Protect base_sep_p
|
|
mov rax, [rip+scratch] # Pointer to scratch
|
|
call GetTarget # Get address of pointer
|
|
call ClearScratch # Clean up after ourselves
|
|
mov rdx, r13 # base = IP
|
|
pop rbx # Restore base_sep_p
|
|
cmp rbx, 0x3E # If base_sep_p == '>'
|
|
jne StorePointer_done # If not
|
|
|
|
# Deal with %label>label case
|
|
push rax # We need to preserve main target
|
|
mov rbx, [rip+scratch] # Write to scratch
|
|
call consume_token # get token
|
|
mov rax, [rip+scratch] # Pointer to scratch
|
|
call GetTarget # Get address of pointer
|
|
call ClearScratch # Clean up after ourselves
|
|
mov rdx, rax # Use our new base
|
|
pop rax # Restore main target
|
|
|
|
StorePointer_done:
|
|
ret
|
|
|
|
StorePointer_rel4:
|
|
call StorePointer # Do Common
|
|
sub rax, rdx # target - ip
|
|
mov rdx, 4 # set the size of chars we want
|
|
call print_chars
|
|
jmp Second_pass
|
|
|
|
StorePointer_rel2:
|
|
call StorePointer # Do Common
|
|
sub rax, rdx # target - ip
|
|
mov rdx, 2 # set the size of chars we want
|
|
call print_chars
|
|
jmp Second_pass
|
|
|
|
StorePointer_rel1:
|
|
call StorePointer # Do Common
|
|
sub rax, rdx # target - ip
|
|
mov rdx, 1 # set the size of chars we want
|
|
call print_chars
|
|
jmp Second_pass
|
|
|
|
StorePointer_abs4:
|
|
call StorePointer # Do Common
|
|
mov rdx, 4 # set the size of chars we want
|
|
call print_chars
|
|
jmp Second_pass
|
|
|
|
StorePointer_abs2:
|
|
call StorePointer # Do Common
|
|
mov rdx, 2 # set the size of chars we want
|
|
call print_chars
|
|
jmp Second_pass
|
|
|
|
fail:
|
|
mov rax, 1 # Set exit code 1
|
|
jmp terminate
|
|
|
|
Done:
|
|
xor eax, eax # Set exit code 0
|
|
|
|
terminate:
|
|
# Free pool
|
|
push rax # save exit code
|
|
|
|
mov r14, [rip+SystemBoot] # get system->boot
|
|
mov rcx, [rip+scratch] # arg1 = scratch
|
|
push rax # allocate shadow stack space for UEFI function
|
|
call [r14+72] # system->boot->free_pool(scratch)
|
|
pop rax # deallocate stack
|
|
|
|
mov rcx, [rip+fout] # get fout
|
|
call close_file # close fout
|
|
|
|
failed_output:
|
|
mov rcx, [rip+fin] # get fin
|
|
call close_file # close fin
|
|
|
|
failed_input:
|
|
mov rcx, [rip+rootdir] # get rootdir
|
|
call close_file # close rootdir
|
|
|
|
mov r8, [rip+image_handle] # arg3 = image_handle
|
|
lea rdx, [rip+SIMPLE_FS_PROTOCOL] # guid = &SIMPLE_FS_PROTOCOL
|
|
mov rcx, [rip+root_device] # arg1 = root_device
|
|
call close_protocol # close protocol
|
|
|
|
mov r8, [rip+image_handle] # arg3 = image_handle
|
|
lea rdx, [rip+LOADED_IMAGE_PROTOCOL] # guid = &LOADED_IMAGE_PROTOCOL
|
|
mov rcx, r8 # arg1 = image_handle
|
|
call close_protocol # close protocol
|
|
|
|
pop rax # restore exit code
|
|
|
|
abort: # used for debugging only
|
|
mov rsp, rbp # restore stack
|
|
ret # return to UEFI
|
|
|
|
# rcx: file handle
|
|
close_file:
|
|
push rax # allocate shadow stack space for UEFI function
|
|
call [rcx+16] # file_handle->close(file_handle)
|
|
pop rax # deallocate stack
|
|
ret
|
|
|
|
# rcx: handle
|
|
# rdx: &guid
|
|
# r9: agent_handle
|
|
# returns interface
|
|
open_protocol:
|
|
push rax # allocate stack for interface
|
|
mov r8, rsp # arg3 = &interface
|
|
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(handle, &guid, &interface, agent_handle, 0, EFI_OPEN_PROTOCOL_BY_HANDLE_PROTOCOL)
|
|
add rsp, 48 # deallocate stack
|
|
pop rax # get interface
|
|
ret
|
|
|
|
# rcx: handle
|
|
# rdx: &guid
|
|
# r8: agent_handle
|
|
close_protocol:
|
|
xor r9, r9 # arg4 = NULL
|
|
sub rsp, 32 # allocate shadow stack space for UEFI function
|
|
call [r14+288] # system->boot->close_protocol(handle, &guid, agent_handle, 0)
|
|
add rsp, 32 # deallocate stack
|
|
ret
|
|
|
|
# rdx: number of bytes to allocate
|
|
# r14: system->boot
|
|
# returns pointer in rax
|
|
allocate_pool:
|
|
push rdx # allocate stack for pool pointer
|
|
mov r8, rsp # arg3 = &pool
|
|
push 2
|
|
pop rcx # arg1 = EFI_LOADER_DATA
|
|
sub rsp, 24 # allocate shadow stack space for UEFI
|
|
call [r14+64] # system->boot->allocate_pool(EFI_LOADER_DATA, 2048, &pool)
|
|
add rsp, 24 # deallocate stack
|
|
pop rax # get pool
|
|
ret
|
|
|
|
|
|
# Protocol GUIDs
|
|
LOADED_IMAGE_PROTOCOL:
|
|
.long 0x5b1b31a1
|
|
.short 0x9562
|
|
.short 0x11d2
|
|
.byte 0x8e, 0x3f, 0x00, 0xa0, 0xc9, 0x69, 0x72, 0x3b
|
|
|
|
SIMPLE_FS_PROTOCOL:
|
|
.long 0x0964e5b22
|
|
.short 0x6459
|
|
.short 0x11d2
|
|
.byte 0x8e, 0x39, 0x00, 0xa0, 0xc9, 0x69, 0x72, 0x3b
|
|
|
|
fin:
|
|
.long 0, 0
|
|
|
|
fout:
|
|
.long 0, 0
|
|
|
|
scratch:
|
|
.long 0, 0
|
|
|
|
rootdir:
|
|
.long 0, 0
|
|
|
|
SystemBoot:
|
|
.long 0, 0
|
|
|
|
image_handle:
|
|
.long 0, 0
|
|
|
|
root_device:
|
|
.long 0, 0
|