andrius
/
stage0-uefi
1
0
Fork 0
Code Issues Pull Requests Projects Releases Wiki Activity

kame-minimal: 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 2022-09-12 00:05:09 +01:00
parent 32deb0ffaf
commit cc85d5f8db
8 changed files with 1273 additions and 1272 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

22
Development/kaem-minimal.c
View File

@ -55,6 +55,8 @@ efi_status_t efi_main(efi_handle_t image_handle, struct efi_system_table *system
struct efi_file_protocol *fin; struct efi_file_protocol *fin;
efi_status_t status = rootdir->open(rootdir, &fin, script_file, EFI_FILE_MODE_READ, EFI_FILE_READ_ONLY); efi_status_t status = rootdir->open(rootdir, &fin, script_file, EFI_FILE_MODE_READ, EFI_FILE_READ_ONLY);
if(status != EFI_SUCCESS) { if(status != EFI_SUCCESS) {
system->boot->close_protocol(root_device, &guid2, image_handle, 0);
system->boot->close_protocol(image_handle, &guid1, image_handle, 0);
return status; return status;
} }
@ -78,8 +80,11 @@ efi_status_t efi_main(efi_handle_t image_handle, struct efi_system_table *system
{ {
fin->read(fin, &size, &c); fin->read(fin, &size, &c);
if (size == 0) { if (size == 0) {
rootdir->close(fin); fin->close(fin);
rootdir->close(rootdir);
system->boot->free_pool(command); system->boot->free_pool(command);
system->boot->close_protocol(root_device, &guid2, image_handle, 0);
system->boot->close_protocol(image_handle, &guid1, image_handle, 0);
return EFI_SUCCESS; return EFI_SUCCESS;
} }
else if(c == '\n') { else if(c == '\n') {
@ -115,7 +120,10 @@ efi_status_t efi_main(efi_handle_t image_handle, struct efi_system_table *system
efi_status_t status = rootdir->open(rootdir, &fcmd, command, EFI_FILE_MODE_READ, EFI_FILE_READ_ONLY); efi_status_t status = rootdir->open(rootdir, &fcmd, command, EFI_FILE_MODE_READ, EFI_FILE_READ_ONLY);
if(status != EFI_SUCCESS) { if(status != EFI_SUCCESS) {
system->boot->free_pool(command); system->boot->free_pool(command);
rootdir->close(fin); fin->close(fin);
rootdir->close(rootdir);
system->boot->close_protocol(root_device, &guid2, image_handle, 0);
system->boot->close_protocol(image_handle, &guid1, image_handle, 0);
return status; return status;
} }
@ -129,7 +137,7 @@ efi_status_t efi_main(efi_handle_t image_handle, struct efi_system_table *system
file_size = file_info->file_size; file_size = file_info->file_size;
system->boot->free_pool(file_info); system->boot->free_pool(file_info);
system->boot->allocate_pool(EFI_LOADER_CODE, file_size, (void **) &executable); system->boot->allocate_pool(EFI_LOADER_DATA, file_size, (void **) &executable);
fcmd->read(fcmd, &file_size, executable); fcmd->read(fcmd, &file_size, executable);
fcmd->close(fcmd); fcmd->close(fcmd);
@ -138,7 +146,7 @@ efi_status_t efi_main(efi_handle_t image_handle, struct efi_system_table *system
device_path->type = HARDWARE_DEVICE_PATH; device_path->type = HARDWARE_DEVICE_PATH;
device_path->subtype = MEMORY_MAPPED; device_path->subtype = MEMORY_MAPPED;
device_path->length = sizeof(struct efi_device_path_protocol); device_path->length = sizeof(struct efi_device_path_protocol);
device_path->memory_type = EFI_LOADER_CODE; device_path->memory_type = EFI_LOADER_DATA;
device_path->start_address = (uint64_t) executable; device_path->start_address = (uint64_t) executable;
device_path->end_address = (uint64_t) executable + file_size; device_path->end_address = (uint64_t) executable + file_size;
device_path[1].type = END_HARDWARE_DEVICE_PATH; device_path[1].type = END_HARDWARE_DEVICE_PATH;
@ -154,6 +162,7 @@ efi_status_t efi_main(efi_handle_t image_handle, struct efi_system_table *system
child_image->load_options = command; child_image->load_options = command;
child_image->load_options_size = 2 * (i + 1); child_image->load_options_size = 2 * (i + 1);
child_image->device = image->device; child_image->device = image->device;
system->boot->close_protocol(child_ih, &guid1, child_ih, 0);
/* Run command */ /* Run command */
return_code = system->boot->start_image(child_ih, 0, 0); return_code = system->boot->start_image(child_ih, 0, 0);
@ -161,7 +170,10 @@ efi_status_t efi_main(efi_handle_t image_handle, struct efi_system_table *system
if(return_code != 0) { if(return_code != 0) {
system->boot->free_pool(command); system->boot->free_pool(command);
system->out->output_string(system->out, L"Subprocess error.\r\n"); system->out->output_string(system->out, L"Subprocess error.\r\n");
rootdir->close(fin); fin->close(fin);
rootdir->close(rootdir);
system->boot->close_protocol(root_device, &guid2, image_handle, 0);
system->boot->close_protocol(image_handle, &guid1, image_handle, 0);
return return_code; return return_code;
} }
} while(true); } while(true);

12
amd64/Development/hex2.M1
View File

@ -110,9 +110,9 @@ DEFINE sub_rbx, 4883EB
DEFINE sub_rsp, 4883EC DEFINE sub_rsp, 4883EC
DEFINE sub_rax,rdx 4829D0 DEFINE sub_rax,rdx 4829D0
DEFINE test_esi_esi 85F6 DEFINE test_esi_esi 85F6
DEFINE xor_eax_eax 31C0 DEFINE xor_eax,eax 31C0
DEFINE xor_edx_edx 31D2 DEFINE xor_edx,edx 31D2
DEFINE xor_esi_esi 31F6 DEFINE xor_esi,esi 31F6
DEFINE xor_r9,r9 4D31C9 DEFINE xor_r9,r9 4D31C9
# Register usage: # Register usage:
@ -223,7 +223,7 @@ DEFINE xor_r9,r9 4D31C9
# rewind input file # rewind input file
push_r11 # Protect r11 push_r11 # Protect r11
mov_rcx,[rip+DWORD] %fin # Using our input file mov_rcx,[rip+DWORD] %fin # 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+BYTE] !56 # fin->set_position(fin, 0) call_[rcx+BYTE] !56 # fin->set_position(fin, 0)
@ -481,7 +481,7 @@ DEFINE xor_r9,r9 4D31C9
mov_rcx,[rip+DWORD] %fin # arg1 = fin mov_rcx,[rip+DWORD] %fin # arg1 = fin
push !1 # size = 1 push !1 # size = 1
mov_rdx,rsb # arg2 = &size mov_rdx,rsb # arg2 = &size
xor_esi_esi # zero rsi xor_esi,esi # zero rsi
push_rsi # allocate stack push_rsi # allocate stack
mov_rsp,r8 # arg3 = &input mov_rsp,r8 # arg3 = &input
push_rax # allocate shadow stack space for UEFI function push_rax # allocate shadow stack space for UEFI function
@ -688,7 +688,7 @@ DEFINE xor_r9,r9 4D31C9
jmp %terminate jmp %terminate
:Done :Done
xor_eax_eax # Set exit code 0 xor_eax,eax # Set exit code 0
:terminate :terminate
push_rax # save exit code push_rax # save exit code

869
amd64/Development/kaem-minimal.M1
View File

@ -3,527 +3,520 @@
# #
# SPDX-License-Identifier: GPL-3.0-or-later # SPDX-License-Identifier: GPL-3.0-or-later
DEFINE ADD_RBX_to_R15 4901DF DEFINE add_rax, 4883C0
DEFINE ADD_RDI_to_R15 4901FF DEFINE add_rsp, 4883C4
DEFINE ADD_RSI_to_RBX 4801F3 DEFINE add_rbx, 4883C3
DEFINE ADDI8_RAX 4883C0 DEFINE add_rsi, 4883C6
DEFINE ADDI8_RBX 4883C3 DEFINE add_rbx,rsi 4801F3
DEFINE ADDI8_RSI 4883C6 DEFINE add_r15,rbx 4901DF
DEFINE ADDI8_RSP 4883C4 DEFINE add_r15,rdi 4901FF
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 COPY_RAX_to_RCX 4889C1 DEFINE cmp_al, 3C
DEFINE COPY_RBX_to_RCX 4889D9 DEFINE cmp_rbx,rdx 4839D3
DEFINE COPY_RBX_to_RDX 4889DA DEFINE inc_rax 48FFC0
DEFINE COPY_RBX_to_R8 4989D8 DEFINE je8 74
DEFINE COPY_RBX_to_R12 4989DC DEFINE jmp8 EB
DEFINE COPY_RBP_to_RSP 4889EC DEFINE jmp E9
DEFINE COPY_RDI_to_RCX 4889F9 DEFINE jne8 75
DEFINE COPY_RDI_to_R9 4989F9 DEFINE jne 0F85
DEFINE COPY_RSI_to_R15 4989F7 DEFINE lea_rdx,[rip+DWORD] 488D15
DEFINE COPY_RSP_to_RDX 4889E2 DEFINE lea_r8,[rip+DWORD] 4C8D05
DEFINE COPY_RSP_to_RBP 4889E5 DEFINE mov_dh, B6
DEFINE COPY_RSP_to_R8 4989E0 DEFINE mov_rbp,rsp 4889E5
DEFINE COPY_R8_to_RAX 4C89C0 DEFINE mov_rbx,rax 4889C3
DEFINE COPY_R9_to_RCX 4C89C9 DEFINE mov_rbx,rcx 4889CB
DEFINE COPY_R12_to_RCX 4C89E1 DEFINE mov_rcx,rax 4889C1
DEFINE COPY_R12_to_R8 4D89E0 DEFINE mov_rcx,rbx 4889D9
DEFINE COPY_R13_to_RCX 4C89E9 DEFINE mov_rcx,rdi 4889F9
DEFINE COPY_R15_to_RCX 4C89F9 DEFINE mov_rcx,r8 4C89C1
DEFINE COPY_R15_to_R8 4D89F8 DEFINE mov_rcx,r9 4C89C9
DEFINE COPY_R15_to_R9 4D89F9 DEFINE mov_rcx,r12 4C89E1
DEFINE INC_RAX 48FFC0 DEFINE mov_rcx,r15 4C89F9
DEFINE JE8 74 DEFINE mov_rdi,rax 4889C7
DEFINE JMP8 EB DEFINE mov_rdx,rbx 4889DA
DEFINE JMP32 E9 DEFINE mov_rdx,rsp 4889E2
DEFINE JNE8 75 DEFINE mov_rsp,rbp 4889EC
DEFINE JNE32 0F85 DEFINE mov_r8,rax 4989C0
DEFINE LEA_RDX_rel 488D15 DEFINE mov_r8,rbx 4989D8
DEFINE LEA_R12_rel 4C8D25 DEFINE mov_r8,rdi 4989F8
DEFINE LOAD64_into_RAX_from_Address_RDX_Immediate8 488B42 DEFINE mov_r8,rsp 4989E0
DEFINE LOAD64_into_RAX_from_Address_RSP_Immediate8 488B4424 DEFINE mov_r8,r15 4D89F8
DEFINE LOAD64_into_RBX_from_Address_RAX_Immediate8 488B58 DEFINE mov_r9,rax 4989C1
DEFINE LOAD64_into_RBX_from_Address_RSP_Immediate8 488B5C24 DEFINE mov_r9,rbx 4989D9
DEFINE LOAD64_into_RCX_from_Address_RCX_Immediate8 488B49 DEFINE mov_r9,rdi 4989F9
DEFINE LOAD64_into_RCX_from_Address_RSP_Immediate8 488B4C24 DEFINE mov_r9,r15 4D89F9
DEFINE LOAD64_into_RDX_from_Address_RCX_Immediate8 488B51 DEFINE mov_r15,rsi 4989F7
DEFINE LOAD64_into_R14_from_Address_RDX_Immediate8 4C8B72 DEFINE mov_r15,rax 4989C7
DEFINE LOAD64_into_R12_from_Address_RSP_Immediate8 4C8B6424 DEFINE mov_[rax], C700
DEFINE LOAD64_into_RDX_rel32 488B15 DEFINE mov_[rbx], C603
DEFINE LOAD64_into_R9_rel32 4C8B0D DEFINE mov_[r8], 49C700
DEFINE LOAD8_AL_from_Address_RBX 8A03 DEFINE mov_[rax],BYTE C600
DEFINE LOADI8_DH B6 DEFINE mov_[rax],WORD 66C700
DEFINE LOAD64_rel_RCX 488B0D DEFINE mov_[rbx],WORD 66C703
DEFINE LOAD64_rel_RDX 488B15 DEFINE mov_[r15],WORD 6641C707
DEFINE POP_RAX 58 DEFINE mov_al,[rbx] 8A03
DEFINE POP_RBX 5B DEFINE mov_[rax],r15 4C8938
DEFINE POP_RCX 59 DEFINE mov_[rbx],ax 668903
DEFINE POP_RDX 5A DEFINE mov_rax,[rdx+BYTE] 488B42
DEFINE POP_RSI 5E DEFINE mov_rbx,[rdi+BYTE] 488B5F
DEFINE POP_RDI 5F DEFINE mov_rcx,[rcx+BYTE] 488B49
DEFINE POP_R8 4158 DEFINE mov_rcx,[rdi+BYTE] 488B4F
DEFINE POP_R9 4159 DEFINE mov_rdx,[rcx+BYTE] 488B51
DEFINE POP_R13 415D DEFINE mov_r12,[rsp+BYTE] 4C8B6424
DEFINE POP_R14 415E DEFINE mov_r14,[rdx+BYTE] 4C8B72
DEFINE POP_R15 415F DEFINE mov_rcx,[rip+DWORD] 488B0D
DEFINE PUSH 6A DEFINE mov_rdx,[rip+DWORD] 488B15
DEFINE PUSH_RAX 50 DEFINE mov_r8,[rip+DWORD] 4C8B05
DEFINE PUSH_RDX 52 DEFINE mov_[rax+BYTE],rbx 488958
DEFINE PUSH_RBX 53 DEFINE mov_[rax+BYTE],rcx 488948
DEFINE PUSH_RSP 54 DEFINE mov_[rax+BYTE],rsi 488970
DEFINE PUSH_RSI 56 DEFINE mov_[rip+DWORD],rcx 48890D
DEFINE PUSH_RDI 57 DEFINE mov_[rip+DWORD],rax 488905
DEFINE PUSH_R8 4150 DEFINE pop_rax 58
DEFINE PUSH_R9 4151 DEFINE pop_rcx 59
DEFINE RET C3 DEFINE pop_rdi 5F
DEFINE STORE16_AX_into_Address_RBX 668903 DEFINE pop_rdx 5A
DEFINE STORE64_R15_into_Address_RAX 4C8938 DEFINE pop_r8 4158
DEFINE STORE64_from_RAX_rel32 488905 DEFINE pop_r9 4159
DEFINE STORE64_from_RCX_rel32 48890D DEFINE push 6A
DEFINE STORE64_from_RBX_into_Address_RAX_Immediate8 488958 DEFINE push_rax 50
DEFINE STORE64_from_RCX_into_Address_RCX_Immediate8 488948 DEFINE push_rbx 53
DEFINE STORE64_from_RSI_into_Address_RAX_Immediate8 488970 DEFINE push_rdi 57
DEFINE STOREI8_into_Address_RAX C600 DEFINE push_rdx 52
DEFINE STOREI16_into_Address_RAX 66C700 DEFINE push_rsi 56
DEFINE STOREI32_into_Address_RAX C700 DEFINE push_rsp 54
DEFINE STOREI16_into_Address_RBX 66C703 DEFINE push_r8 4150
DEFINE STOREI16_into_Address_R15 6641C707 DEFINE ret C3
DEFINE STOREI32_into_Address_R8 49C700 DEFINE sub_rbx, 4883EB
DEFINE SUBI8_RSP 4883EC DEFINE sub_rsp, 4883EC
DEFINE SUB_RDI_from_R15 4929FF DEFINE sub_rbx,rsi 4829F3
DEFINE SUB_RSI_from_RBX 4829F3 DEFINE sub_r15,rdi 4929FF
DEFINE TEST_AL_AL 84C0 DEFINE test_eax,eax 85C0
DEFINE TEST_EAX_EAX 85C0 DEFINE test_ecx,ecx 85C9
DEFINE TEST_ECX_ECX 85C9 DEFINE test_r8,r8 4D85C0
DEFINE TEST_R15_R15 4D85FF DEFINE test_r15,r15 4D85FF
DEFINE XOR_ECX_ECX 31C9 DEFINE xor_ecx,ecx 31C9
DEFINE XOR_EDX_EDX 31D2 DEFINE xor_edx,edx 31D2
DEFINE XOR_ESI_ESI 31F6 DEFINE xor_esi,esi 31F6
DEFINE XOR_R8_R8 4D31C0 DEFINE xor_r8,r8 4D31C0
DEFINE XOR_R9_R9 4D31C9 DEFINE xor_r9,r9 4D31C9
DEFINE XOR_R15_R15 4D31FF DEFINE xor_r15,r15 4D31FF
# 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
STORE64_from_RCX_rel32 %image_handle # save image_handle mov_[rip+DWORD],rcx %image_handle # save image_handle
LOAD64_into_RAX_from_Address_RDX_Immediate8 !64 # system->out mov_rbx,rcx # save image_handle
STORE64_from_RAX_rel32 %system_out # save system->out mov_rax,[rdx+BYTE] !64 # system->out
LOAD64_into_R14_from_Address_RDX_Immediate8 !96 # system->boot mov_[rip+DWORD],rax %system_out # save system->out
mov_r14,[rdx+BYTE] !96 # system->boot
XOR_ECX_ECX # timeout = 0 xor_ecx,ecx # timeout = 0
XOR_EDX_EDX # watchdog_code = 0 xor_edx,edx # watchdog_code = 0
XOR_R8_R8 # data_size = 0 xor_r8,r8 # data_size = 0
XOR_R9_R9 # watchdog_data = 0 xor_r9,r9 # watchdog_data = 0
SUBI8_RSP !32 # allocate shadow stack space for UEFI function sub_rsp, !32 # allocate shadow stack space for UEFI function
CALL_R14_Immediate32 %240 # system->boot->set_watchdog_timer call_[r14+DWORD] %240 # system->boot->set_watchdog_timer
# Open Loaded Image protocol # Open Loaded Image protocol
PUSH_RAX # allocate stack for image mov_r9,rbx # 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,rbx # arg1 = image_handle
PUSH_RDX # push last 64 bits onto stack call %open_protocol # open protocol
LOAD64_rel_RDX %LOADED_IMAGE_PROTOCOL # EFI_LOADED_IMAGE_PROTOCOL_GUID (first 64 bits) mov_rdi,rax # save image
PUSH_RDX # push first 64 bits onto stack mov_[rip+DWORD],rax %image # save image
COPY_RSP_to_RDX # arg2 = &guid
PUSH !1 # arg6 = EFI_OPEN_PROTOCOL_BY_HANDLE_PROTOCOL
PUSH !0 # arg5 = NULL
LOAD64_into_R9_rel32 %image_handle # arg4 = image_handle
COPY_R9_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
STORE64_from_RAX_rel32 %image # save image
# Command line args
COPY_RAX_to_RCX # copy image to rcx
LOAD64_into_RBX_from_Address_RAX_Immediate8 !56 # options = image->load_options
# Skip application name
:loop_options1
ADDI8_RBX !2 # ++options
LOAD8_AL_from_Address_RBX # *options
CMPI8_AL !0x20 # if *options == ' '
JE8 !loop_options2 # then jump
TEST_AL_AL # if options != 0
JNE8 !loop_options1 # then loop
# Use default file
LEA_R12_rel %default_file # Use "kaem.amd64"
JMP8 !root_fs # jump
:loop_options2
ADDI8_RBX !2 # ++options
COPY_RBX_to_R12 # save input file
:root_fs
# Get root file system # Get root file system
PUSH_RAX # allocate stack for rootfs mov_r9,rbx # 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 # SIMPLE_FS_PROTOCOL (last 64 bits) mov_rcx,[rdi+BYTE] !24 # arg1 = root_device = image->device
PUSH_RDX # push last 64 bits onto stack mov_[rip+DWORD],rcx %root_device # save root_device
LOAD64_rel_RDX %SIMPLE_FS_PROTOCOL # SIMPLE_FS_PROTOCOL (first 64 bits) call %open_protocol # open protocol
PUSH_RDX # push first 64 bits onto stack mov_rcx,rax # get rootfs
COPY_RSP_to_RDX # arg2 = &guid
PUSH !1 # arg6 = EFI_OPEN_PROTOCOL_BY_HANDLE_PROTOCOL
PUSH !0 # arg5 = NULL
LOAD64_into_R9_rel32 %image_handle # arg4 = image_handle
LOAD64_into_RCX_from_Address_RCX_Immediate8 !24 # arg1 = root_device = image->device
SUBI8_RSP !32 # allocate shadow stack space for UEFI function
CALL_R14_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 lea_rdx,[rip+DWORD] %rootdir # arg2 = &rootdir
COPY_RSP_to_RDX # arg2 = &rootdir push_rax # allocate shadow stack space for UEFI function
PUSH_RAX # allocate shadow stack space for UEFI function push_rax # allocate shadow stack space for UEFI function
PUSH_RAX # allocate shadow stack space for UEFI function call_[rcx+BYTE] !8 # rootfs->open_volume(rootfs, &rootdir)
CALL_RCX_Immediate8 !8 # rootfs->open_volume(rootfs, &rootdir) pop_rax # deallocate stack
POP_RAX # deallocate stack pop_rax # deallocate stack
POP_RAX # deallocate stack
POP_R13 # save 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
pop_r8 # get input file
test_r8,r8 # Check if argument is specified
jne8 !arg_done # then use it
# Else use default_file
lea_r8,[rip+DWORD] %default_file # Use "kaem.amd64"
:arg_done
# Open file for reading # Open file for reading
PUSH_RDX # allocate stack for fin push_rdx # allocate stack for fin
COPY_RSP_to_RDX # arg2 = &fin mov_rdx,rsp # arg2 = &fin
PUSH !1 # arg5 = EFI_FILE_READ_ONLY push !1 # arg5 = EFI_FILE_READ_ONLY
PUSH !1 # prepare to set arg4 to EFI_FILE_MODE_READ push !1 # prepare to set arg4 to EFI_FILE_MODE_READ
POP_R9 # arg4 = EFI_FILE_MODE_READ pop_r9 # arg4 = EFI_FILE_MODE_READ
COPY_R12_to_R8 # arg3 = in # arg3 = script
COPY_R13_to_RCX # arg1 = rootdir mov_rcx,[rip+DWORD] %rootdir # 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()
TEST_EAX_EAX # if status != EFI_SUCCESS test_eax,eax # if status != EFI_SUCCESS
JNE32 %abort # then exit without closing file jne %abort # then exit without closing file
LOAD64_into_R12_from_Address_RSP_Immediate8 !40 # get fin mov_r12,[rsp+BYTE] !40 # get fin
# Allocate pool for command # Allocate pool for command
PUSH_RDX # allocate stack for command xor_edx,edx # zero RDX
COPY_RSP_to_R8 # arg3 = &command mov_dh, !0x10 # arg2 = 4096 = 0x1000
XOR_EDX_EDX # zero RDX call %allocate_pool # allocate memory
LOADI8_DH !0x10 # arg2 = 4096 = 0x1000 mov_rbx,rax # get command
PUSH !2
POP_RCX # arg1 = EFI_LOADER_DATA
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_R14_Immediate8 !64 # system->boot->allocate_pool(EFI_LOADER_DATA, 4096, &commmand)
LOAD64_into_RBX_from_Address_RSP_Immediate8 !24 # get command
:next_command :next_command
XOR_ESI_ESI # i = 0 xor_esi,esi # i = 0
XOR_R15_R15 # command_length = 0 xor_r15,r15 # command_length = 0
:read_command :read_command
CALLI32 %read_byte # read another byte c call %read_byte # read another byte c
CMPI8_AL !0xa # if c == '\n' cmp_al, !0xa # if c == '\n'
JE8 !read_command_done # then we are done with this command je8 !read_command_done # then we are done with this command
CMPI8_AL !0x20 # if c == ' ' cmp_al, !0x20 # if c == ' '
JNE8 !read_command_comments jne8 !read_command_comments
TEST_R15_R15 # and command_length == 0 test_r15,r15 # and command_length == 0
JNE8 !read_command_comments jne8 !read_command_comments
COPY_RSI_to_R15 # command_length = i mov_r15,rsi # command_length = i
:read_command_comments :read_command_comments
CMPI8_AL !0x23 # if c == '#' then process comment cmp_al, !0x23 # if c == '#' then process comment
JNE8 !read_command_store_char # else store char jne8 !read_command_store_char # else store char
:read_command_skip_comment :read_command_skip_comment
CALLI32 %read_byte # get another char call %read_byte # get another char
CMPI8_AL !0xa # if c == '\n' cmp_al, !0xa # if c == '\n'
JNE8 !read_command_skip_comment # continue reading until newline jne8 !read_command_skip_comment # continue reading until newline
JMP8 !next_command # deal with another line jmp8 !next_command # deal with another line
:read_command_store_char :read_command_store_char
ADD_RSI_to_RBX # rbx = &command[i] add_rbx,rsi # rbx = &command[i]
STORE16_AX_into_Address_RBX # command[i] = c mov_[rbx],ax # command[i] = c
SUB_RSI_from_RBX # rbx = &command[0] sub_rbx,rsi # rbx = &command[0]
ADDI8_RSI !2 # location of the next char add_rsi, !2 # location of the next char
JMP8 !read_command # continue looping jmp8 !read_command # continue looping
:read_command_done :read_command_done
TEST_R15_R15 # if command_length == 0 test_r15,r15 # if command_length == 0
JE8 !next_command # deal with another line je8 !next_command # deal with another line
ADD_RSI_to_RBX # rbx = &command[i] add_rbx,rsi # rbx = &command[i]
STOREI16_into_Address_RBX @0 # command[i] = 0 mov_[rbx],WORD @0 # command[i] = 0
SUB_RSI_from_RBX # rbx = &command[0] sub_rbx,rsi # rbx = &command[0]
ADDI8_RSI !2 # add 2 to get string length with NULL terminator add_rsi, !2 # add 2 to get string length with NULL terminator
LEA_RDX_rel %prefix # get prefix " +> " lea_rdx,[rip+DWORD] %prefix # get prefix " +> "
CALLI32 %File_Print # print it call %File_Print # print it
COPY_RBX_to_RDX # get command mov_rdx,rbx # get command
CALLI32 %File_Print # print it call %File_Print # print it
LEA_RDX_rel %suffix # get suffix "\n\r" lea_rdx,[rip+DWORD] %suffix # get suffix "\n\r"
CALLI32 %File_Print # print it call %File_Print # print it
# Remove command line options # Remove command line options
ADD_RBX_to_R15 # go to the space separating command and its options add_r15,rbx # go to the space separating command and its options
STOREI16_into_Address_R15 @0 # zero it to hide command line options mov_[r15],WORD @0 # zero it to hide command line options
# Open executable file for reading # Open executable file for reading
PUSH_RDX # allocate stack for fcmd push_rdx # allocate stack for fcmd
COPY_RSP_to_RDX # arg2 = &fcmd mov_rdx,rsp # arg2 = &fcmd
PUSH !1 # arg5 = EFI_FILE_READ_ONLY push !1 # arg5 = EFI_FILE_READ_ONLY
PUSH !1 # prepare to set arg4 to EFI_FILE_MODE_READ push !1 # prepare to set arg4 to EFI_FILE_MODE_READ
POP_R9 # arg4 = EFI_FILE_MODE_READ pop_r9 # arg4 = EFI_FILE_MODE_READ
COPY_RBX_to_R8 # arg3 = command mov_r8,rbx # arg3 = command
COPY_R13_to_RCX # arg1 = rootdir mov_rcx,[rip+DWORD] %rootdir # 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()
TEST_EAX_EAX # if status != EFI_SUCCESS test_eax,eax # if status != EFI_SUCCESS
JNE32 %print_error # then exit jne %print_error # then exit
ADDI8_RSP !40 # deallocate stack add_rsp, !40 # deallocate stack
POP_RDI # get fcmd pop_rdi # get fcmd
# Restore command line arguments # Restore command line arguments
STOREI16_into_Address_R15 @0x20 # restore command line options by readding ' ' mov_[r15],WORD @0x20 # restore command line options by readding ' '
# Allocate pool for file_info # Allocate pool for file_info
PUSH_RDX # allocate stack for file_info xor_edx,edx # zero RDX
COPY_RSP_to_R8 # arg3 = &file_info mov_dh, !0x10 # arg2 = 4096 = 0x1000
XOR_EDX_EDX # zero RDX call %allocate_pool # allocate memory
LOADI8_DH !0x10 # arg2 = 4096 = 0x1000 mov_r9,rax # get file_info (arg4 for get_info)
PUSH !2
POP_RCX # arg1 = EFI_LOADER_DATA
PUSH_RAX # allocate shadow stack space for UEFI
PUSH_RAX # allocate shadow stack space for UEFI
PUSH_RAX # allocate shadow stack space for UEFI
CALL_R14_Immediate8 !64 # system->boot->allocate_pool(EFI_LOADER_DATA, 4096, &file_info)
POP_RAX # deallocate stack
POP_RAX # deallocate stack
POP_RAX # deallocate stack
POP_R9 # get file_info (arg4 for get_info)
# Get file info # Get file info
PUSH_R9 # save file_info push_rax # save file_info
PUSH_RAX # allocate stack for file_size push_rax # allocate stack for file_size
COPY_RSP_to_R8 # arg3 = &file_size mov_r8,rsp # arg3 = &file_size
STOREI32_into_Address_R8 %0x1000 # file_size = 0x1000 mov_[r8], %0x1000 # file_size = 0x1000
LOAD64_rel_RDX %SIMPLE_FS_PROTOCOL_8 # EFI_FILE_INFO_PROTOCOL (last 64 bits) lea_rdx,[rip+DWORD] %FILE_INFO_PROTOCOL # arg2 = &EFI_FILE_INFO_PROTOCOL
PUSH_RDX # push last 64 bits onto stack mov_rcx,rdi # arg1 = fcmd
LOAD64_rel_RDX %FILE_INFO_PROTOCOL # EFI_FILE_INFO_PROTOCOL (first 64 bits) sub_rsp, !32 # allocate shadow stack space for UEFI function
PUSH_RDX # push first 64 bits onto stack call_[rcx+BYTE] !64 # fcmd->get_info(fcmd, &guid, &file_size, file_info)
COPY_RSP_to_RDX # arg2 = &guid add_rsp, !40 # deallocate stack
COPY_RDI_to_RCX # arg1 = fcmd pop_rcx # restore file_info
SUBI8_RSP !32 # allocate shadow stack space for UEFI function mov_rdx,[rcx+BYTE] !8 # get file_size
CALL_RCX_Immediate8 !64 # fcmd->get_info(fcmd, &guid, &file_size, file_info)
ADDI8_RSP !56 # deallocate stack
POP_RCX # restore file_info
LOAD64_into_RDX_from_Address_RCX_Immediate8 !8 # get file_size
# Free file_info pool # Free file_info pool
PUSH_RDX # save file_size onto stack push_rdx # save file_size onto stack
PUSH_RAX # allocate shadow stack space for UEFI function push_rax # allocate shadow stack space for UEFI function
CALL_R14_Immediate8 !72 # system->boot->free_pool(file_info) call_[r14+BYTE] !72 # system->boot->free_pool(file_info)
POP_RAX # deallocate stack pop_rax # deallocate stack
POP_RDX # restore file_size from stack (arg2 for allocate_pool) pop_rdx # restore file_size from stack (arg2 for allocate_pool)
# Allocate pool for executable # Allocate pool for executable
PUSH_RDX # save file_size onto stack push_rdx # save file_size onto stack
PUSH_RDX # allocate stack for executable call %allocate_pool # allocate memory
COPY_RSP_to_R8 # arg3 = &executable mov_r15,rax # get executable
PUSH !2 pop_rdx # restore file_size
POP_RCX # arg1 = EFI_LOADER_DATA
PUSH_RAX # allocate shadow stack space for UEFI
PUSH_RAX # allocate shadow stack space for UEFI
PUSH_RAX # allocate shadow stack space for UEFI
CALL_R14_Immediate8 !64 # system->boot->allocate_pool(EFI_LOADER_DATA, file_size, &executable)
POP_RAX # deallocate stack
POP_RAX # deallocate stack
POP_RAX # deallocate stack
POP_R15 # get executable
POP_RDX # restore file_size
# Load executable into memory # Load executable into memory
PUSH_RDX # save file_size onto stack push_rdx # save file_size onto stack
COPY_R15_to_R8 # arg3 = executable mov_r8,r15 # arg3 = executable
COPY_RSP_to_RDX # arg2 = &file_size mov_rdx,rsp # arg2 = &file_size
COPY_RDI_to_RCX # arg1 = fcmd mov_rcx,rdi # arg1 = fcmd
PUSH_RAX # allocate shadow stack space for UEFI push_rax # allocate shadow stack space for UEFI
PUSH_RAX # allocate shadow stack space for UEFI push_rax # allocate shadow stack space for UEFI
PUSH_RAX # allocate shadow stack space for UEFI push_rax # allocate shadow stack space for UEFI
CALL_RCX_Immediate8 !32 # fcmd->read(fcmd, &file_size, executable) call_[rcx+BYTE] !32 # fcmd->read(fcmd, &file_size, executable)
POP_RAX # deallocate stack pop_rax # deallocate stack
POP_RAX # deallocate stack pop_rax # deallocate stack
POP_RAX # deallocate stack pop_rax # deallocate stack
# Close fcmd # Close fcmd
PUSH_RAX # allocate stack push_rax # allocate stack
COPY_RDI_to_RCX # arg1 = fcmd mov_rcx,rdi # arg1 = fcmd
CALL_RCX_Immediate8 !16 # fcmd->close(fcmd) call_[rcx+BYTE] !16 # fcmd->close(fcmd)
POP_RAX # restore stack pop_rax # restore stack
POP_RDI # restore file_size pop_rdi # restore file_size
# Allocate memory for device_path struct # Allocate memory for device_path struct
PUSH_RDX # allocate stack for device_path push !28 # 4 + sizeof(struct efi_device_path_protocol)
COPY_RSP_to_R8 # arg3 = &device_path pop_rdx # arg2 = 28
PUSH !28 # 4 + sizeof(struct efi_device_path_protocol) call %allocate_pool # allocate memory
POP_RDX # arg2 = 28 mov_r8,rax # get device_path
PUSH !2
POP_RCX # arg1 = EFI_LOADER_DATA
PUSH_RAX # allocate shadow stack space for UEFI
PUSH_RAX # allocate shadow stack space for UEFI
PUSH_RAX # allocate shadow stack space for UEFI
CALL_R14_Immediate8 !64 # system->boot->allocate_pool(EFI_LOADER_DATA, 28, &device_path)
POP_RAX # deallocate stack
POP_RAX # deallocate stack
POP_RAX # deallocate stack
POP_R8 # get device_path
# Initialize struct # Initialize struct
COPY_R8_to_RAX # Make a pointer to device_path members mov_[rax],BYTE !1 # device_path->type = HARDWARE_DEVICE_PATH
STOREI8_into_Address_RAX !1 # device_path->type = HARDWARE_DEVICE_PATH inc_rax # next member
INC_RAX # next member mov_[rax],BYTE !3 # device_path->subtype = MEMORY_MAPPED
STOREI8_into_Address_RAX !3 # device_path->subtype = MEMORY_MAPPED inc_rax # next member
INC_RAX # next member mov_[rax],WORD @24 # device_path->length = 24
STOREI16_into_Address_RAX @24 # device_path->length = 24 add_rax, !2 # next member
ADDI8_RAX !2 # next member mov_[rax], %1 # device_path->memory_type = EFI_LOADER_CODE
STOREI32_into_Address_RAX %1 # device_path->memory_type = EFI_LOADER_CODE add_rax, !4 # next member
ADDI8_RAX !4 # next member mov_[rax],r15 # device_path->start_address = executable
STORE64_R15_into_Address_RAX # device_path->start_address = executable add_rax, !8 # next member
ADDI8_RAX !8 # next member add_r15,rdi # end_address = executable + file_size
ADD_RDI_to_R15 # end_address = executable + file_size mov_[rax],r15 # device_path->end_address = end_address
STORE64_R15_into_Address_RAX # device_path->end_address = end_address sub_r15,rdi # restore r15 = executable
SUB_RDI_from_R15 # restore r15 = executable add_rax, !8 # next member
ADDI8_RAX !8 # next member mov_[rax],BYTE !0x7f # device_path[1].type = END_HARDWARE_DEVICE_PATH
STOREI8_into_Address_RAX !0x7f # device_path[1].type = END_HARDWARE_DEVICE_PATH inc_rax # next member
INC_RAX # next member mov_[rax],BYTE !0xff # device_path[1].subtype = END_ENTIRE_DEVICE_PATH
STOREI8_into_Address_RAX !0xff # device_path[1].subtype = END_ENTIRE_DEVICE_PATH inc_rax # next member
INC_RAX # next member mov_[rax],WORD @4 # device_path[1].length = 4
STOREI16_into_Address_RAX @4 # device_path[1].length = 4
# Load image # Load image
PUSH_R8 # save device_path push_r8 # save device_path
PUSH_RAX # allocate stack for child_ih push_rax # allocate stack for child_ih
PUSH_RSP # arg6 = &child_ih push_rsp # arg6 = &child_ih
PUSH_RDI # arg5 = file size push_rdi # arg5 = file size
COPY_R15_to_R9 # arg4 = executable mov_r9,r15 # arg4 = executable
# arg3 = device_path # arg3 = device_path
LOAD64_into_RDX_rel32 %image_handle # arg2 = image_handle mov_rdx,[rip+DWORD] %image_handle # arg2 = image_handle
XOR_ECX_ECX # arg1 = 0 xor_ecx,ecx # arg1 = 0
SUBI8_RSP !32 # allocate shadow stack space for UEFI function sub_rsp, !32 # allocate shadow stack space for UEFI function
CALL_R14_Immediate32 %200 # system->boot->load_image() call_[r14+DWORD] %200 # system->boot->load_image()
ADDI8_RSP !48 # deallocate stack add_rsp, !48 # deallocate stack
POP_RDI # save child_ih pop_rdi # save child_ih
# Free device_path pool # Free device_path pool
POP_RCX # arg1 = device_path pop_rcx # arg1 = device_path
PUSH_RAX # allocate shadow stack space for UEFI function push_rax # allocate shadow stack space for UEFI function
CALL_R14_Immediate8 !72 # system->boot->free_pool(device_path) call_[r14+BYTE] !72 # system->boot->free_pool(device_path)
POP_RAX # deallocate stack pop_rax # deallocate stack
# Free executable pool # Free executable pool
COPY_R15_to_RCX # arg1 = executable mov_rcx,r15 # arg1 = executable
PUSH_RAX # allocate shadow stack space for UEFI function push_rax # allocate shadow stack space for UEFI function
CALL_R14_Immediate8 !72 # system->boot->free_pool(executable) call_[r14+BYTE] !72 # system->boot->free_pool(executable)
POP_RAX # deallocate stack pop_rax # deallocate stack
# Open Child Image # Open Child Image
PUSH_RAX # allocate stack for child_image mov_r9,rdi # arg4 = child_ih
COPY_RSP_to_R8 # arg3 = &child_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) push_rdx # save &LOADED_IMAGE_PROTOCOL
PUSH_RDX # push last 64 bits onto stack mov_rcx,r9 # arg1 = child_ih
LOAD64_rel_RDX %LOADED_IMAGE_PROTOCOL # EFI_LOADED_IMAGE_PROTOCOL_GUID (first 64 bits) call %open_protocol # open protocol
PUSH_RDX # push first 64 bits onto stack
COPY_RSP_to_RDX # arg2 = &guid
PUSH !1 # arg6 = EFI_OPEN_PROTOCOL_BY_HANDLE_PROTOCOL
PUSH !0 # arg5 = NULL
COPY_RDI_to_R9 # arg4 = child_ih
COPY_RDI_to_RCX # arg1 = child_ih
SUBI8_RSP !32 # allocate shadow stack space for UEFI function
CALL_R14_Immediate32 %280 # system->boot->open_protocol(child_ih, &guid, &child_image, child_ih, 0, EFI_OPEN_PROTOCOL_BY_HANDLE_PROTOCOL)
ADDI8_RSP !64 # deallocate stack
POP_RAX # get child_image
STORE64_from_RBX_into_Address_RAX_Immediate8 !56 # child_image->load_options = command mov_[rax+BYTE],rbx !56 # child_image->load_options = command
STORE64_from_RSI_into_Address_RAX_Immediate8 !48 # set child_image->load_options_size mov_[rax+BYTE],rsi !48 # set child_image->load_options_size
LOAD64_rel_RCX %image # get image mov_rcx,[rip+DWORD] %image # get image
LOAD64_into_RCX_from_Address_RCX_Immediate8 !24 # image->device mov_rcx,[rcx+BYTE] !24 # image->device
STORE64_from_RCX_into_Address_RCX_Immediate8 !24 # child_image->device = image->device mov_[rax+BYTE],rcx !24 # child_image->device = image->device
mov_r8,rdi # arg3 = image_handle
pop_rdx # arg2 = &LOADED_IMAGE_PROTOCOL
mov_rcx,r8 # arg1 = image_handle
call %close_protocol # close protocol
# Run command # Run command
XOR_R8_R8 # arg3 = 0 (ExitData) xor_r8,r8 # arg3 = 0 (ExitData)
XOR_EDX_EDX # arg2 = 0 (ExitData size) xor_edx,edx # arg2 = 0 (ExitData size)
COPY_RDI_to_RCX # arg1 = child_ih mov_rcx,rdi # arg1 = child_ih
PUSH_RAX # allocate shadow stack space for UEFI push_rax # allocate shadow stack space for UEFI
PUSH_RAX # allocate shadow stack space for UEFI push_rax # allocate shadow stack space for UEFI
PUSH_RAX # allocate shadow stack space for UEFI push_rax # allocate shadow stack space for UEFI
CALL_R14_Immediate32 %208 # system->boot->start_image() call_[r14+DWORD] %208 # system->boot->start_image()
POP_RCX # deallocate stack pop_rcx # deallocate stack
POP_RCX # deallocate stack pop_rcx # deallocate stack
POP_RCX # deallocate stack pop_rcx # deallocate stack
TEST_EAX_EAX # check if return code is 0 test_eax,eax # check if return code is 0
JNE8 !print_error # print error and exit jne8 !print_error # print error and exit
JMP32 %next_command # process another line from kaem script jmp %next_command # process another line from kaem script
:print_error :print_error
PUSH_RAX # save exit code push_rax # save exit code
LEA_RDX_rel %subprocess_error # get error message lea_rdx,[rip+DWORD] %subprocess_error # get error message
CALLI32 %File_Print # print it call %File_Print # print it
POP_RAX # restore exit code pop_rax # restore exit code
# Close script file and exit # Close script file and exit
:terminate :terminate
# Free pool # Free pool
COPY_RBX_to_RCX # arg1 = command mov_rcx,rbx # arg1 = command
PUSH_RAX # save exit code push_rax # save exit code
PUSH_RAX # allocate shadow stack space for UEFI function push_rax # allocate shadow stack space for UEFI function
CALL_R14_Immediate8 !72 # system->boot->free_pool(commmand) call_[r14+BYTE] !72 # system->boot->free_pool(commmand)
COPY_R12_to_RCX # arg1 = fin mov_rcx,r12 # arg1 = fin
CALL_RCX_Immediate8 !16 # fin->close(fin) call_[rcx+BYTE] !16 # fin->close(fin)
POP_RAX # deallocate stack
POP_RAX # restore exit code mov_rcx,[rip+DWORD] %rootdir # arg1 = rootdir
call_[rcx+BYTE] !16 # rootdir->close(rootdir)
pop_rax # deallocate stack
pop_rax # restore exit code
# Exit without closing script file # Exit without closing script file
:terminate_2
mov_r8,[rip+DWORD] %image_handle # arg3 = image_handle
push_r8 # save image_handle
lea_rdx,[rip+DWORD] %SIMPLE_FS_PROTOCOL # guid = &SIMPLE_FS_PROTOCOL
mov_rcx,[rip+DWORD] %root_device # arg1 = root_device
call %close_protocol # close protocol
pop_r8 # arg3 = image_handle
lea_rdx,[rip+DWORD] %LOADED_IMAGE_PROTOCOL # guid = &LOADED_IMAGE_PROTOCOL
mov_rcx,r8 # arg1 = image_handle
call %close_protocol # close protocol
:abort :abort
COPY_RBP_to_RSP # restore stack mov_rsp,rbp # restore stack
RET ret # return to UEFI
# File_Print function # File_Print function
# Receives WCHAR* in RDX # Receives WCHAR* in RDX
:File_Print :File_Print
LOAD64_rel_RCX %system_out # get system_out mov_rcx,[rip+DWORD] %system_out # get system_out
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 # system->out->output_string(system->out, WCHAR*) call_[rcx+BYTE] !8 # system->out->output_string(system->out, WCHAR*)
POP_RAX # deallocate stack pop_rax # deallocate stack
POP_RAX # deallocate stack pop_rax # deallocate stack
RET ret
# read_byte function # read_byte function
# reads a single character # reads a single character
:read_byte :read_byte
COPY_R12_to_RCX # arg1 = fin mov_rcx,r12 # 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 push_rsi # allocate stack
COPY_RSP_to_R8 # arg3 = &c mov_r8,rsp # arg3 = &c
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 !32 # fin->read() call_[rcx+BYTE] !32 # fin->read()
POP_RAX # deallocate stack pop_rax # deallocate stack
POP_RAX # deallocate stack pop_rax # deallocate stack
POP_RAX # deallocate stack pop_rax # deallocate stack
POP_RAX # save c to rax pop_rax # save c to rax
POP_RCX # save size to rcx pop_rcx # save size to rcx
# If the file ended (0 bytes read) terminate # If the file ended (0 bytes read) terminate
TEST_ECX_ECX # if size = 0 test_ecx,ecx # if size = 0
JE8 !terminate # then we are done je8 !terminate # then we are done
RET # return ret # return
# 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+DWORD] %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+DWORD] %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+BYTE] !64 # system->boot->allocate_pool(EFI_LOADER_DATA, 2048, &pool)
add_rsp, !24 # deallocate stack
pop_rax # get pool
ret
# Protocol GUIDs # Protocol GUIDs
@ -531,21 +524,19 @@ DEFINE XOR_R15_R15 4D31FF
%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
:FILE_INFO_PROTOCOL :FILE_INFO_PROTOCOL
%0x09576e92 %0x09576e92
@0x6d3f @0x6d3f
@0x11d2 @0x11d2
# last 64-bits of GUID are identical to SIMPLE_FS_PROTOCOL !0x8e !0x39 !0 !0xa0 !0xc9 !0x69 !0x72 !0x3b
:default_file :default_file
"k" "a" "e" "m" "." "a" "m" "d" "6" "4" @0 "k" "a" "e" "m" "." "a" "m" "d" "6" "4" @0
@ -565,6 +556,12 @@ DEFINE XOR_R15_R15 4D31FF
:image :image
%0 %0 %0 %0
:rootdir
%0 %0
:root_device
%0 %0
:system_out :system_out
%0 %0 %0 %0

251
amd64/Development/kaem-minimal.S
View File

@ -10,6 +10,7 @@
_start: _start:
mov rbp, rsp # save stack pointer mov rbp, rsp # save stack pointer
mov [rip+image_handle], rcx # save image_handle mov [rip+image_handle], rcx # save image_handle
mov rbx, rcx # save image_handle
mov rax, [rdx+64] # system->out mov rax, [rdx+64] # system->out
mov [rip+system_out], rax # save system->out mov [rip+system_out], rax # save system->out
mov r14, [rdx+96] # system->boot mov r14, [rdx+96] # system->boot
@ -22,69 +23,53 @@ _start:
call [r14+240] # system->boot->set_watchdog_timer call [r14+240] # system->boot->set_watchdog_timer
# Open Loaded Image protocol # Open Loaded Image protocol
push rax # allocate stack for image mov r9, rbx # arg4 = image_handle
mov r8, rsp # arg3 = &image lea rdx, [rip+LOADED_IMAGE_PROTOCOL] # guid = &LOADED_IMAGE_PROTOCOL
mov rdx, [rip+LOADED_IMAGE_PROTOCOL+8] # EFI_LOADED_IMAGE_PROTOCOL_GUID (last 64 bits) mov rcx, rbx # arg1 = image_handle
push rdx # push last 64 bits onto stack call open_protocol # open protocol
mov rdx, [rip+LOADED_IMAGE_PROTOCOL] # EFI_LOADED_IMAGE_PROTOCOL_GUID (first 64 bits) mov rdi, rax # save image
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, [rip+image_handle] # arg4 = image_handle
mov rcx, r9 # 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 [rip+image], rax # save image mov [rip+image], rax # save image
# Command line args
mov rcx, rax # copy image to rcx
mov rbx, [rax+56] # options = image->load_options
# Skip application name
loop_options1:
add rbx, 2 # ++options
mov al, [rbx] # *options
cmp al, 0x20 # if *options == ' '
je loop_options2 # then jump
test al, al # if options != 0
jne loop_options1 # then loop
# Use default_file
lea r12, [rip+default_file] # Use "kaem.amd64"
jmp root_fs # jump
loop_options2:
add rbx, 2 # ++options
mov r12, rbx # save script file
root_fs:
# Get root file system # Get root file system
push rax # allocate stack for rootfs mov r9, rbx # arg4 = image_handle
mov r8, rsp # arg3 = &rootfs lea rdx, [rip+SIMPLE_FS_PROTOCOL] # guid = &SIMPLE_FS_PROTOCOL
mov rdx, [rip+SIMPLE_FS_PROTOCOL+8] # EFI_SIMPLE_FILE_SYSTEM_PROTOCOL_GUID (last 64 bits) mov rcx, [rdi+24] # arg1 = root_device = image->device
push rdx # push last 64 bits onto stack mov [rip+root_device], rcx # save root_device
mov rdx, [rip+SIMPLE_FS_PROTOCOL] # EFI_SIMPLE_FILE_SYSTEM_PROTOCOL_GUID (first 64 bits) call open_protocol # open protocol
push rdx # push first 64 bits onto stack mov rcx, rax # get rootfs
mov rdx, rsp # arg2 = &guid
push 1 # arg6 = EFI_OPEN_PROTOCOL_BY_HANDLE_PROTOCOL
push 0 # arg5 = NULL
mov r9, [rip+image_handle] # 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 # Get root directory
push rdx # allocate stack for rootdir lea rdx, [rip+rootdir] # 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+8] # rootfs->open_volume(rootfs, &rootdir) call [rcx+8] # rootfs->open_volume(rootfs, &rootdir)
pop rax # deallocate stack pop rax # deallocate stack
pop rax # deallocate stack pop rax # deallocate stack
pop r13 # save 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:
pop r8 # get input file
test r8, r8 # Check if argument is specified
jne arg_done # then use it
# Else use default_file
lea r8, [rip+default_file] # Use "kaem.amd64"
arg_done:
# Open file for reading # Open file for reading
push rdx # allocate stack for fin push rdx # allocate stack for fin
@ -92,26 +77,19 @@ root_fs:
push 1 # arg5 = EFI_FILE_READ_ONLY push 1 # arg5 = EFI_FILE_READ_ONLY
push 1 # prepare to set arg4 to EFI_FILE_MODE_READ push 1 # prepare to set arg4 to EFI_FILE_MODE_READ
pop r9 # arg4 = EFI_FILE_MODE_READ pop r9 # arg4 = EFI_FILE_MODE_READ
mov r8, r12 # arg3 = script # arg3 = script
mov rcx, r13 # arg1 = rootdir mov rcx, [rip+rootdir] # arg1 = rootdir
sub rsp, 32 # allocate shadow stack space for UEFI function sub rsp, 32 # allocate shadow stack space for UEFI function
call [rcx+8] # rootdir->open() call [rcx+8] # rootdir->open()
test eax, eax # if status != EFI_SUCCESS test eax, eax # if status != EFI_SUCCESS
jne abort # then exit without closing file jne terminate_2 # then exit without closing file
mov r12, [rsp+40] # get fin mov r12, [rsp+40] # get fin
# Allocate pool for command # Allocate pool for command
push rdx # allocate stack for command
mov r8, rsp # arg3 = &command
xor edx, edx # zero rdx xor edx, edx # zero rdx
mov dh, 0x10 # arg2 = 4096 = 0x1000 mov dh, 0x10 # arg2 = 4096 = 0x1000
push 2 call allocate_pool # allocate memory
pop rcx # arg1 = EFI_LOADER_DATA mov rbx, rax # get command
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 [r14+64] # system->boot->allocate_pool(EFI_LOADER_DATA, 4096, &commmand)
mov rbx, [rsp+24] # get command
next_command: next_command:
xor esi, esi # i = 0 xor esi, esi # i = 0
@ -175,7 +153,7 @@ read_command_done:
push 1 # prepare to set arg4 to EFI_FILE_MODE_READ push 1 # prepare to set arg4 to EFI_FILE_MODE_READ
pop r9 # arg4 = EFI_FILE_MODE_READ pop r9 # arg4 = EFI_FILE_MODE_READ
mov r8, rbx # arg3 = command mov r8, rbx # arg3 = command
mov rcx, r13 # arg1 = rootdir mov rcx, [rip+rootdir] # arg1 = rootdir
sub rsp, 32 # allocate shadow stack space for UEFI function sub rsp, 32 # allocate shadow stack space for UEFI function
call [rcx+8] # rootdir->open() call [rcx+8] # rootdir->open()
test eax, eax # if status != EFI_SUCCESS test eax, eax # if status != EFI_SUCCESS
@ -187,35 +165,21 @@ read_command_done:
mov WORD PTR [r15], 0x20 # restore command line options by readding ' ' mov WORD PTR [r15], 0x20 # restore command line options by readding ' '
# Allocate pool for file_info # Allocate pool for file_info
push rdx # allocate stack for file_info
mov r8, rsp # arg3 = &file_info
xor edx, edx # zero rdx xor edx, edx # zero rdx
mov dh, 0x10 # arg2 = 4096 = 0x1000 mov dh, 0x10 # arg2 = 4096 = 0x1000
push 2 call allocate_pool # allocate memory
pop rcx # arg1 = EFI_LOADER_DATA mov r9, rax # get file_info (arg4 for get_info)
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 [r14+64] # system->boot->allocate_pool(EFI_LOADER_DATA, 4096, &file_info)
pop rax # deallocate stack
pop rax # deallocate stack
pop rax # deallocate stack
pop r9 # get file_info (arg4 for get_info)
# Get file info # Get file info
push r9 # save file_info push rax # save file_info
push rax # allocate stack for file_size push rax # allocate stack for file_size
mov r8, rsp # arg3 = &file_size mov r8, rsp # arg3 = &file_size
mov QWORD PTR [r8], 0x1000 # file_size = 0x1000 mov QWORD PTR [r8], 0x1000 # file_size = 0x1000
mov rdx, [rip+SIMPLE_FS_PROTOCOL+8] # EFI_FILE_INFO_PROTOCOL (last 64 bits) lea rdx, [rip+FILE_INFO_PROTOCOL] # arg2 = &EFI_FILE_INFO_PROTOCOL
push rdx # push last 64 bits onto stack
mov rdx, [rip+FILE_INFO_PROTOCOL] # EFI_FILE_INFO_PROTOCOL (first 64 bits)
push rdx # push first 64 bits onto stack
mov rdx, rsp # arg2 = &guid
mov rcx, rdi # arg1 = fcmd mov rcx, rdi # arg1 = fcmd
sub rsp, 32 # allocate shadow stack space for UEFI function sub rsp, 32 # allocate shadow stack space for UEFI function
call [rcx+64] # fcmd->get_info(fcmd, &guid, &file_size, file_info) call [rcx+64] # fcmd->get_info(fcmd, &guid, &file_size, file_info)
add rsp, 56 # deallocate stack add rsp, 40 # deallocate stack
pop rcx # restore file_info pop rcx # restore file_info
mov rdx, [rcx+8] # get file_size mov rdx, [rcx+8] # get file_size
@ -228,18 +192,8 @@ read_command_done:
# Allocate pool for executable # Allocate pool for executable
push rdx # save file_size onto stack push rdx # save file_size onto stack
push rdx # allocate stack for executable call allocate_pool # allocate memory
mov r8, rsp # arg3 = &executable mov r15, rax # get executable
push 2
pop rcx # arg1 = EFI_LOADER_DATA
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 [r14+64] # system->boot->allocate_pool(EFI_LOADER_DATA, file_size, &executable)
pop rax # deallocate stack
pop rax # deallocate stack
pop rax # deallocate stack
pop r15 # get executable
pop rdx # restore file_size pop rdx # restore file_size
# Load executable into memory # Load executable into memory
@ -264,23 +218,12 @@ read_command_done:
pop rdi # restore file_size pop rdi # restore file_size
# Allocate memory for device_path struct # Allocate memory for device_path struct
push rdx # allocate stack for device_path
mov r8, rsp # arg3 = &device_path
push 28 # 4 + sizeof(struct efi_device_path_protocol) push 28 # 4 + sizeof(struct efi_device_path_protocol)
pop rdx # arg2 = 28 pop rdx # arg2 = 28
push 2 call allocate_pool # allocate memory
pop rcx # arg1 = EFI_LOADER_DATA mov r8, rax # get device_path
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 [r14+64] # system->boot->allocate_pool(EFI_LOADER_DATA, 28, &device_path)
pop rax # deallocate stack
pop rax # deallocate stack
pop rax # deallocate stack
pop r8 # get device_path
# Initialize struct # Initialize struct
mov rax, r8 # Make a pointer to device_path members
mov BYTE PTR [rax], 1 # device_path->type = HARDWARE_DEVICE_PATH mov BYTE PTR [rax], 1 # device_path->type = HARDWARE_DEVICE_PATH
inc rax # next member inc rax # next member
mov BYTE PTR [rax], 3 # device_path->subtype = MEMORY_MAPPED mov BYTE PTR [rax], 3 # device_path->subtype = MEMORY_MAPPED
@ -328,21 +271,11 @@ read_command_done:
pop rax # deallocate stack pop rax # deallocate stack
# Open Child Image # Open Child Image
push rax # allocate stack for child_image
mov r8, rsp # arg3 = &child_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, rdi # arg4 = child_ih mov r9, rdi # arg4 = child_ih
mov rcx, rdi # arg1 = child_ih lea rdx, [rip+LOADED_IMAGE_PROTOCOL] # guid = &LOADED_IMAGE_PROTOCOL
sub rsp, 32 # allocate shadow stack space for UEFI function push rdx # save &LOADED_IMAGE_PROTOCOL
call [r14+280] # system->boot->open_protocol(child_ih, &guid, &child_image, child_ih, 0, EFI_OPEN_PROTOCOL_BY_HANDLE_PROTOCOL) mov rcx, r9 # arg1 = child_ih
add rsp, 64 # deallocate stack call open_protocol # open protocol
pop rax # get child_image
mov [rax+56], rbx # child_image->load_options = command mov [rax+56], rbx # child_image->load_options = command
mov [rax+48], rsi # set child_image->load_options_size mov [rax+48], rsi # set child_image->load_options_size
@ -350,6 +283,11 @@ read_command_done:
mov rcx, [rcx+24] # image->device mov rcx, [rcx+24] # image->device
mov [rax+24], rcx # child_image->device = image->device mov [rax+24], rcx # child_image->device = image->device
mov r8, rdi # arg3 = image_handle
pop rdx # arg2 = &LOADED_IMAGE_PROTOCOL
mov rcx, r8 # arg1 = image_handle
call close_protocol # close protocol
# Run command # Run command
xor r8, r8 # arg3 = 0 (ExitData) xor r8, r8 # arg3 = 0 (ExitData)
xor edx, edx # arg2 = 0 (ExitData size) xor edx, edx # arg2 = 0 (ExitData size)
@ -382,13 +320,29 @@ terminate:
mov rcx, r12 # arg1 = fin mov rcx, r12 # arg1 = fin
call [rcx+16] # fin->close(fin) call [rcx+16] # fin->close(fin)
mov rcx, [rip+rootdir] # arg1 = rootdir
call [rcx+16] # rootdir->close(rootdir)
pop rax # deallocate stack pop rax # deallocate stack
pop rax # restore exit code pop rax # restore exit code
# Exit without closing script file # Exit without closing script file
terminate_2:
mov r8, [rip+image_handle] # arg3 = image_handle
push r8 # save 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
pop r8 # arg3 = image_handle
lea rdx, [rip+LOADED_IMAGE_PROTOCOL] # guid = &LOADED_IMAGE_PROTOCOL
mov rcx, r8 # arg1 = image_handle
call close_protocol # close protocol
abort: abort:
mov rsp, rbp # restore stack mov rsp, rbp # restore stack
ret ret # return to UEFI
# File_Print function # File_Print function
# Receives WCHAR* in RDX # Receives WCHAR* in RDX
@ -425,6 +379,45 @@ read_byte:
ret 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 # Protocol GUIDs
LOADED_IMAGE_PROTOCOL: LOADED_IMAGE_PROTOCOL:
.long 0x5b1b31a1 .long 0x5b1b31a1
@ -442,7 +435,7 @@ FILE_INFO_PROTOCOL:
.long 0x09576e92 .long 0x09576e92
.short 0x6d3f .short 0x6d3f
.short 0x11d2 .short 0x11d2
# last 64-bits of GUID are identical to SIMPLE_FS_PROTOCOL .byte 0x8e, 0x39, 0x00, 0xa0, 0xc9, 0x69, 0x72, 0x3b
default_file: default_file:
.byte 0x6B, 0, 0x61, 0, 0x65, 0, 0x6D, 0, 0x2E, 0 .byte 0x6B, 0, 0x61, 0, 0x65, 0, 0x6D, 0, 0x2E, 0
@ -463,5 +456,11 @@ image_handle:
image: image:
.long 0, 0 .long 0, 0
rootdir:
.long 0, 0
root_device:
.long 0, 0
system_out: system_out:
.long 0, 0 .long 0, 0

664
amd64/Development/kaem-minimal.hex2
View File

@ -5,442 +5,432 @@
# 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
48890D %image_handle ; STORE64_from_RCX_rel32 %image_handle # save image_handle 48890D %image_handle ; mov_[rip+DWORD],rcx %image_handle # save image_handle
488B42 40 ; LOAD64_into_RAX_from_Address_RDX_Immediate8 !64 # system->out 4889CB ; mov_rbx,rcx # save image_handle
488905 %system_out ; STORE64_from_RAX_rel32 %system_out # save system->out 488B42 40 ; mov_rax,[rdx+BYTE] !64 # system->out
4C8B72 60 ; LOAD64_into_R14_from_Address_RDX_Immediate8 !96 # system->boot 488905 %system_out ; mov_[rip+DWORD],rax %system_out # save system->out
4C8B72 60 ; mov_r14,[rdx+BYTE] !96 # system->boot
31C9 ; XOR_ECX_ECX # timeout = 0 31C9 ; xor_ecx,ecx # timeout = 0
31D2 ; XOR_EDX_EDX # watchdog_code = 0 31D2 ; xor_edx,edx # watchdog_code = 0
4D31C0 ; XOR_R8_R8 # data_size = 0 4D31C0 ; xor_r8,r8 # data_size = 0
4D31C9 ; XOR_R9_R9 # watchdog_data = 0 4D31C9 ; xor_r9,r9 # watchdog_data = 0
4883EC 20 ; SUBI8_RSP !32 # allocate shadow stack space for UEFI function 4883EC 20 ; sub_rsp, !32 # allocate shadow stack space for UEFI function
41FF96 F0000000 ; CALL_R14_Immediate32 %240 # system->boot->set_watchdog_timer 41FF96 F0000000 ; call_[r14+DWORD] %240 # system->boot->set_watchdog_timer
# Open Loaded Image protocol # Open Loaded Image protocol
50 ; PUSH_RAX # allocate stack for image 4989D9 ; mov_r9,rbx # 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) 4889D9 ; mov_rcx,rbx # arg1 = image_handle
52 ; PUSH_RDX # push last 64 bits onto stack E8 %open_protocol ; call %open_protocol # open protocol
488B15 %LOADED_IMAGE_PROTOCOL ; LOAD64_rel_RDX %LOADED_IMAGE_PROTOCOL # EFI_LOADED_IMAGE_PROTOCOL_GUID (first 64 bits) 4889C7 ; mov_rdi,rax # save image
52 ; PUSH_RDX # push first 64 bits onto 488905 %image ; mov_[rip+DWORD],rax %image # save image
4889E2 ; COPY_RSP_to_RDX # arg2 = &guid
6A 01 ; PUSH !1 # arg6 = EFI_OPEN_PROTOCOL_BY_HANDLE_PROTOCOL
6A 00 ; PUSH !0 # arg5 = NULL
4C8B0D %image_handle ; LOAD64_into_R9_rel32 %image_handle # arg4 = image_handle
4C89C9 ; COPY_R9_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
488905 %image ; STORE64_from_RAX_rel32 %image # save image
# Command line args
4889C1 ; COPY_RAX_to_RCX # copy image to rcx
488B58 38 ; LOAD64_into_RBX_from_Address_RAX_Immediate8 !56 # options = image->load_options
# Skip application name
:loop_options1
4883C3 02 ; ADDI8_RBX !2 # ++options
8A03 ; LOAD8_AL_from_Address_RBX # *options
3C 20 ; CMPI8_AL !0x20 # if *options == ' '
74 !loop_options2 ; JE8 !loop_options2 # then jump
84C0 ; TEST_AL_AL # if options != 0
75 !loop_options1 ; JNE8 !loop_options1 # then loop
# Use default file
4C8D25 %default_file ; LEA_R12_rel %default_file # Use "kaem.amd64"
EB !root_fs ; JMP8 !root_fs # jump
:loop_options2
4883C3 02 ; ADDI8_RBX !2 # ++options
4989DC ; COPY_RBX_to_R12 # save input file
:root_fs
# Get root file system # Get root file system
50 ; PUSH_RAX # allocate stack for rootfs 4989D9 ; mov_r9,rbx # 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 48890D %root_device ; mov_[rip+DWORD],rcx %root_device # save root_device
488B15 %SIMPLE_FS_PROTOCOL ; LOAD64_rel_RDX %SIMPLE_FS_PROTOCOL # EFI_SIMPLE_FILE_SYSTEM_PROTOCOL_GUID (first 64 bits) E8 %open_protocol ; call %open_protocol # open protocol
52 ; PUSH_RDX # push first 64 bits onto stack 4889C1 ; mov_rcx,rax # get rootfs
4889E2 ; COPY_RSP_to_RDX # arg2 = &guid
6A 01 ; PUSH !1 # arg6 = EFI_OPEN_PROTOCOL_BY_HANDLE_PROTOCOL
6A 00 ; PUSH !0 # arg5 = NULL
4C8B0D %image_handle ; LOAD64_into_R9_rel32 %image_handle # arg4 = image_handle
488B49 18 ; LOAD64_into_RCX_from_Address_RCX_Immediate8 !24 # arg1 = root_device = image->device
4883EC 20 ; SUBI8_RSP !32 # allocate shadow stack space for UEFI function
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 488D15 %rootdir ; lea_rdx,[rip+DWORD] %rootdir # arg2 = &rootdir
4889E2 ; COPY_RSP_to_RDX # arg3 = &rootdir 50 ; push_rax # allocate shadow stack space for UEFI function space for UEFI function
50 ; PUSH_RAX # allocate shadow stack space for UEFI function 50 ; push_rax # allocate shadow stack space for UEFI function space for UEFI function
50 ; PUSH_RAX # allocate shadow stack space for UEFI function FF51 08 ; call_[rcx+BYTE] !8 # rootfs->open_volume(rootfs, &rootdir)
FF51 08 ; CALL_RCX_Immediate8 !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
415D ; POP_R13 # 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
4158 ; pop_r8 # get input file
4D85C0 ; test_r8,r8 # Check if argument is specified
75 !arg_done ; jne8 !arg_done # then use it
# Else use default_file
4C8D05 %default_file ; lea_r8,[rip+DWORD] %default_file # Use "kaem.amd64"
:arg_done
# Open file for reading # Open file for reading
52 ; PUSH_RDX # allocate stack for fin 52 ; push_rdx # allocate stack for fin
4889E2 ; COPY_RSP_to_RDX # arg2 = &fin 4889E2 ; mov_rdx,rsp # arg2 = &fin
6A 01 ; PUSH !1 # arg5 = EFI_FILE_READ_ONLY 6A 01 ; push !1 # arg5 = EFI_FILE_READ_ONLY
6A 01 ; PUSH !1 # prepare to set arg4 to EFI_FILE_MODE_READ 6A 01 ; push !1 # prepare to set arg4 to EFI_FILE_MODE_READ
4159 ; POP_R9 # arg4 = EFI_FILE_MODE_READ 4159 ; pop_r9 # arg4 = EFI_FILE_MODE_READ
4D89E0 ; COPY_R12_to_R8 # arg3 = in # arg3 = in
4C89E9 ; COPY_R13_to_RCX # arg1 = rootdir 488B0D %rootdir ; mov_rcx,[rip+DWORD] %rootdir # 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()
85C0 ; TEST_EAX_EAX # if status != EFI_SUCCESS 85C0 ; test_eax,eax # if status != EFI_SUCCESS
0F85 %abort ; JNE32 %abort # then exit without closing file 0F85 %abort ; jne %abort # then exit without closing file
4C8B6424 28 ; LOAD64_into_R12_from_Address_RSP_Immediate8 !40 # get fin 4C8B6424 28 ; mov_r12,[rsp+BYTE] !40 # get fin
# Allocate pool for command # Allocate pool for command
52 ; PUSH_RDX # allocate stack for command 31D2 ; xor_edx,edx # zero RDX
4989E0 ; COPY_RSP_to_R8 # arg3 = &command B6 10 ; mov_dh, !0x10 # arg2 = 4096 = 0x1000
31D2 ; XOR_EDX_EDX # zero RDX E8 %allocate_pool ; call %allocate_pool # allocate memory
B6 10 ; LOADI8_DH !0x10 # arg2 = 4096 = 0x1000 4889C3 ; mov_rbx,rax # get command
6A 02 ; PUSH !2
59 ; POP_RCX # arg1 = EFI_LOADER_DATA
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
41FF56 40 ; CALL_R14_Immediate8 !64 # system->boot->allocate_pool(EFI_LOADER_DATA, 4096, &commmand)
488B5C24 18 ; LOAD64_into_RBX_from_Address_RSP_Immediate8 !24 # get command
:next_command :next_command
31F6 ; XOR_ESI_ESI # i = 0 31F6 ; xor_esi,esi # i = 0
4D31FF ; XOR_R15_R15 # command_length = 0 4D31FF ; xor_r15,r15 # command_length = 0
:read_command :read_command
E8 %read_byte ; CALLI32 %read_byte # read another byte c E8 %read_byte ; call %read_byte # read another byte c
3C 0A ; CMPI8_AL !0xa # if c == '\n' 3C 0A ; cmp_al, !0xa # if c == '\n'
74 !read_command_done ; JE8 !read_command_done # then we are done with this command 74 !read_command_done ; je8 !read_command_done # then we are done with this command command
3C 20 ; CMPI8_AL !0x20 # if c == ' ' 3C 20 ; cmp_al, !0x20 # if c == ' '
75 !read_command_comments ; JNE8 !read_command_comments 75 !read_command_comments ; jne8 !read_command_comments
4D85FF ; TEST_R15_R15 # and command_length == 0 4D85FF ; test_r15,r15 # and command_length == 0
75 !read_command_comments ; JNE8 !read_command_comments 75 !read_command_comments ; jne8 !read_command_comments
4989F7 ; COPY_RSI_to_R15 # command_length = i 4989F7 ; mov_r15,rsi # command_length = i
:read_command_comments :read_command_comments
3C 23 ; CMPI8_AL !0x23 # if c == '#' then process comment 3C 23 ; cmp_al, !0x23 # if c == '#' then process comment
75 !read_command_store_char ; JNE8 !read_command_store_char # else store char 75 !read_command_store_char ; jne8 !read_command_store_char # else store char
:read_command_skip_comment :read_command_skip_comment
E8 %read_byte ; CALLI32 %read_byte # get another char E8 %read_byte ; call %read_byte # get another char
3C 0A ; CMPI8_AL !0xa # if c == '\n' 3C 0A ; cmp_al, !0xa # if c == '\n'
75 !read_command_skip_comment ; JNE8 !read_command_skip_comment # continue reading until newline 75 !read_command_skip_comment ; jne8 !read_command_skip_comment # continue reading until newline
EB !next_command ; JMP8 !next_command # deal with another line EB !next_command ; jmp8 !next_command # deal with another line
:read_command_store_char :read_command_store_char
4801F3 ; ADD_RSI_to_RBX # rbx = &command[i] 4801F3 ; add_rbx,rsi # rbx = &command[i]
668903 ; STORE16_AX_into_Address_RBX # command[i] = c 668903 ; mov_[rbx],ax # command[i] = c
4829F3 ; SUB_RSI_from_RBX # rbx = &command[0] 4829F3 ; sub_rbx,rsi # rbx = &command[0]
4883C6 02 ; ADDI8_RSI !2 # location of the next char 4883C6 02 ; add_rsi, !2 # location of the next char
EB !read_command ; JMP8 !read_command # continue looping EB !read_command ; jmp8 !read_command # continue looping
:read_command_done :read_command_done
4D85FF ; TEST_R15_R15 # if command_length == 0 4D85FF ; test_r15,r15 # if command_length == 0
74 !next_command ; JE8 !next_command # deal with another line 74 !next_command ; je8 !next_command # deal with another line
4801F3 ; ADD_RSI_to_RBX # rbx = &command[i] 4801F3 ; add_rbx,rsi # rbx = &command[i]
66C703 0000 ; STOREI16_into_Address_RBX @0 # command[i] = 0 66C703 0000 ; mov_[rbx],WORD @0 # command[i] = 0
4829F3 ; SUB_RSI_from_RBX # rbx = &command[0] 4829F3 ; sub_rbx,rsi # rbx = &command[0]
4883C6 02 ; ADDI8_RSI !2 # add 2 to get string length with NULL terminator 4883C6 02 ; add_rsi, !2 # add 2 to get string length with NULL terminator
488D15 %prefix ; LEA_RDX_rel %prefix # get prefix " +> " 488D15 %prefix ; lea_rdx,[rip+DWORD] %prefix # get prefix " +> "
E8 %File_Print ; CALLI32 %File_Print # print it E8 %File_Print ; call %File_Print # print it
4889DA ; COPY_RBX_to_RDX # get command 4889DA ; mov_rdx,rbx # get command
E8 %File_Print ; CALLI32 %File_Print # print it E8 %File_Print ; call %File_Print # print it
488D15 %suffix ; LEA_RDX_rel %suffix # get suffix "\n\r" 488D15 %suffix ; lea_rdx,[rip+DWORD] %suffix # get suffix "\n\r"
E8 %File_Print ; CALLI32 %File_Print # print it E8 %File_Print ; call %File_Print # print it
# Remove command line options # Remove command line options
4901DF ; ADD_RBX_to_R15 # go to the space separating command and its options 4901DF ; add_r15,rbx # go to the space separating command and its options
6641C707 0000 ; STOREI16_into_Address_R15 @0 # zero it to hide command line options 6641C707 0000 ; mov_[r15],WORD @0 # zero it to hide command line options
# Open executable file for reading # Open executable file for reading
52 ; PUSH_RDX # allocate stack for fcmd 52 ; push_rdx # allocate stack for fcmd
4889E2 ; COPY_RSP_to_RDX # arg2 = &fcmd 4889E2 ; mov_rdx,rsp # arg2 = &fcmd
6A 01 ; PUSH !1 # arg5 = EFI_FILE_READ_ONLY 6A 01 ; push !1 # arg5 = EFI_FILE_READ_ONLY
6A 01 ; PUSH !1 # prepare to set arg4 to EFI_FILE_MODE_READ 6A 01 ; push !1 # prepare to set arg4 to EFI_FILE_MODE_READ
4159 ; POP_R9 # arg4 = EFI_FILE_MODE_READ 4159 ; pop_r9 # arg4 = EFI_FILE_MODE_READ
4989D8 ; COPY_RBX_to_R8 # arg3 = command 4989D8 ; mov_r8,rbx # arg3 = command
4C89E9 ; COPY_R13_to_RCX # arg1 = rootdir 488B0D %rootdir ; mov_rcx,[rip+DWORD] %rootdir # 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()
85C0 ; TEST_EAX_EAX # if status != EFI_SUCCESS 85C0 ; test_eax,eax # if status != EFI_SUCCESS
0F85 %print_error ; JNE32 %print_error # then exit 0F85 %print_error ; jne %print_error # then exit
4883C4 28 ; ADDI8_RSP !40 # deallocate stack 4883C4 28 ; add_rsp, !40 # deallocate stack
5F ; POP_RDI # get fcmd 5F ; pop_rdi # get fcmd
# Restore command line arguments # Restore command line arguments
6641C707 2000 ; STOREI16_into_Address_R15 @0x20 # restore command line options by readding ' ' 6641C707 2000 ; mov_[r15],WORD @0x20 # restore command line options by readding ' '
# Allocate pool for file_info # Allocate pool for file_info
52 ; PUSH_RDX # allocate stack for file_info 31D2 ; xor_edx,edx # zero RDX
4989E0 ; COPY_RSP_to_R8 # arg3 = &file_info B6 10 ; mov_dh, !0x10 # arg2 = 4096 = 0x1000
31D2 ; XOR_EDX_EDX # zero RDX E8 %allocate_pool ; call %allocate pool # allocate memory
B6 10 ; LOADI8_DH !0x10 # arg2 = 4096 = 0x1000 4989C1 ; mov_r9,rax # get file_info (arg4 for get_info)
6A 02 ; PUSH !2
59 ; POP_RCX # arg1 = EFI_LOADER_DATA
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
41FF56 40 ; CALL_R14_Immediate8 !64 # system->boot->allocate_pool(EFI_LOADER_DATA, 4096, &commmand)
58 ; POP_RAX # deallocate stack
58 ; POP_RAX # deallocate stack
58 ; POP_RAX # deallocate stack
4159 ; POP_R9 # get file_info (arg4 for get_info)
# Get file info # Get file info
4151 ; PUSH_R9 # save file_info 50 ; push_rax # save file_info
50 ; PUSH_RAX # allocate stack for file_size 50 ; push_rax # allocate stack for file_size
4989E0 ; COPY_RSP_to_R8 # arg3 = &file_size 4989E0 ; mov_r8,rsp # arg3 = &file_size
49C700 00100000 ; STOREI32_into_Address_R8 %0x1000 # file_size = 0x1000 49C700 00100000 ; mov_[r8], %0x1000 # file_size = 0x1000
488B15 %SIMPLE_FS_PROTOCOL_8 ; LOAD64_rel_RDX %SIMPLE_FS_PROTOCOL_8 # EFI_FILE_INFO_PROTOCOL (last 64 bits) 488D15 %FILE_INFO_PROTOCOL ; lea_rdx,[rip+DWORD] %FILE_INFO_PROTOCOL # arg2 = &EFI_FILE_INFO_PROTOCOL
52 ; PUSH_RDX # push last 64 bits onto stack 4889F9 ; mov_rcx,rdi # arg1 = fcmd
488B15 %FILE_INFO_PROTOCOL ; LOAD64_rel_RDX %FILE_INFO_PROTOCOL # EFI_FILE_INFO_PROTOCOL (first 64 bits) 4883EC 20 ; sub_rsp, !32 # allocate shadow stack space for UEFI function
52 ; PUSH_RDX # push first 64 bits onto stack FF51 40 ; call_[rcx+BYTE] !64 # fcmd->get_info(fcmd, &guid, &file_size, file_info)
4889E2 ; COPY_RSP_to_RDX # arg2 = &guid 4883C4 28 ; add_rsp, !40 # deallocate stack
4889F9 ; COPY_RDI_to_RCX # arg1 = fcmd 59 ; pop_rcx # restore file_info
4883EC 20 ; SUBI8_RSP !32 # allocate shadow stack space for UEFI function 488B51 08 ; mov_rdx,[rcx+BYTE] !8 # get file_size
FF51 40 ; CALL_RCX_Immediate8 !64 # fcmd->get_info(fcmd, &guid, &file_size, file_info)
4883C4 38 ; ADDI8_RSP !56 # deallocate stack
59 ; POP_RCX # restore file_info
488B51 08 ; LOAD64_into_RDX_from_Address_RCX_Immediate8 !8 # get file_size
# Free file_info pool # Free file_info pool
52 ; PUSH_RDX # save file_size onto stack 52 ; push_rdx # save file_size onto stack
50 ; PUSH_RAX # allocate shadow stack space for UEFI function 50 ; push_rax # allocate shadow stack space for UEFI function
41FF56 48 ; CALL_R14_Immediate8 !72 # system->boot->free_pool(file_info) 41FF56 48 ; call_[r14+BYTE] !72 # system->boot->free_pool(file_info)
58 ; POP_RAX # deallocate stack 58 ; pop_rax # deallocate stack
5A ; POP_RDX # restore file_size from stack (arg2 for allocate_pool) 5A ; pop_rdx # restore file_size from stack (arg2 for allocate_pool)
# Allocate pool for executable # Allocate pool for executable
52 ; PUSH_RDX # save file_size onto stack 52 ; push_rdx # save file_size onto stack
52 ; PUSH_RDX # allocate stack for executable E8 %allocate_pool ; call %allocate_pool # allocate memory
4989E0 ; COPY_RSP_to_R8 # arg3 = &executable 4989C7 ; mov_r15,rax # get executable
6A 02 ; PUSH !2 5A ; pop_rdx # restore file_size
59 ; POP_RCX # arg1 = EFI_LOADER_DATA
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
41FF56 40 ; CALL_R14_Immediate8 !64 # system->boot->allocate_pool(EFI_LOADER_DATA, file_size, &executable)
58 ; POP_RAX # deallocate stack
58 ; POP_RAX # deallocate stack
58 ; POP_RAX # deallocate stack
415F ; POP_R15 # get executable
5A ; POP_RDX # restore file_size
# Load executable into memory # Load executable into memory
52 ; PUSH_RDX # save file_size onto stack 52 ; push_rdx # save file_size onto stack
4D89F8 ; COPY_R15_to_R8 # arg3 = executable 4D89F8 ; mov_r8,r15 # arg3 = executable
4889E2 ; COPY_RSP_to_RDX # arg2 = &file_size 4889E2 ; mov_rdx,rsp # arg2 = &file_size
4889F9 ; COPY_RDI_to_RCX # arg1 = fcmd 4889F9 ; mov_rcx,rdi # arg1 = fcmd
50 ; PUSH_RAX # allocate shadow stack space for UEFI function 50 ; push_rax # allocate shadow stack space for UEFI
50 ; PUSH_RAX # allocate shadow stack space for UEFI function 50 ; push_rax # allocate shadow stack space for UEFI
50 ; PUSH_RAX # allocate shadow stack space for UEFI function 50 ; push_rax # allocate shadow stack space for UEFI
FF51 20 ; CALL_RCX_Immediate8 !32 # fcmd->read(fcmd, &file_size, executable) FF51 20 ; call_[rcx+BYTE] !32 # fcmd->read(fcmd, &file_size, executable)
58 ; POP_RAX # deallocate stack 58 ; pop_rax # deallocate stack
58 ; POP_RAX # deallocate stack 58 ; pop_rax # deallocate stack
58 ; POP_RAX # deallocate stack 58 ; pop_rax # deallocate stack
# Close fcmd # Close fcmd
50 ; PUSH_RAX # allocate shadow stack space for UEFI function 50 ; push_rax # allocate shadow stack space for UEFI
4889F9 ; COPY_RDI_to_RCX # arg1 = fcmd 4889F9 ; mov_rcx,rdi # arg1 = fcmd
FF51 10 ; CALL_RCX_Immediate8 !16 # fcmd->close(fcmd) FF51 10 ; call_[rcx+BYTE] !16 # fcmd->close(fcmd)
58 ; POP_RAX # deallocate stack 58 ; pop_rax # deallocate stack
5F ; POP_RDI # restore file_size 5F ; pop_rdi # restore file_size
# Allocate memory for device_path struct # Allocate memory for device_path struct
52 ; PUSH_RDX # allocate stack for device_path 6A 1C ; push !28 # 4 + sizeof(struct efi_device_path_protocol)
4989E0 ; COPY_RSP_to_R8 # arg3 = &device_path 5A ; pop_rdx # arg2 = 28
6A 1C ; PUSH !28 # 4 + sizeof(struct efi_device_path_protocol) E8 %allocate_pool ; call %allocate_pool # allocate memory
5A ; POP_RDX # arg2 = 28 4989C0 ; mov_r8,rax # get device_path
6A 02 ; PUSH !2
59 ; POP_RCX # arg1 = EFI_LOADER_DATA
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
41FF56 40 ; CALL_R14_Immediate8 !64 # system->boot->allocate_pool(EFI_LOADER_DATA, 28, &device_path)
58 ; POP_RAX # deallocate stack
58 ; POP_RAX # deallocate stack
58 ; POP_RAX # deallocate stack
4158 ; POP_R8 # get device_path
# Initialize struct # Initialize struct
4C89C0 ; COPY_R8_to_RAX # Make a pointer to device_path members C600 01 ; mov_[rax],BYTE !1 # device_path->type = HARDWARE_DEVICE_PATH
C600 01 ; STOREI8_into_Address_RAX !1 # device_path->type = HARDWARE_DEVICE_PATH 48FFC0 ; inc_rax # next member
48FFC0 ; INC_RAX # next member C600 03 ; mov_[rax],BYTE !3 # device_path->subtype = MEMORY_MAPPED
C600 03 ; STOREI8_into_Address_RAX !3 # device_path->subtype = MEMORY_MAPPED 48FFC0 ; inc_rax # next member
48FFC0 ; INC_RAX # next member 66C700 1800 ; mov_[rax],WORD @24 # device_path->length = 24
66C700 1800 ; STOREI16_into_Address_RAX @24 # device_path->length = 24 4883C0 02 ; add_rax, !2 # next member
4883C0 02 ; ADDI8_RAX !2 # next member C700 01000000 ; mov_[rax], %1 # device_path->memory_type = EFI_LOADER_CODE
C700 01000000 ; STOREI32_into_Address_RAX %1 # device_path->memory_type = EFI_LOADER_CODE 4883C0 04 ; add_rax, !4 # next member
4883C0 04 ; ADDI8_RAX !4 # next member 4C8938 ; mov_[rax],r15 # device_path->start_address = executable
4C8938 ; STORE64_R15_into_Address_RAX # device_path->start_address = executable 4883C0 08 ; add_rax, !8 # next member
4883C0 08 ; ADDI8_RAX !8 # next member 4901FF ; add_r15,rdi # end_address = executable + file_size
4901FF ; ADD_RDI_to_R15 # end_address = executable + file_size 4C8938 ; mov_[rax],r15 # device_path->end_address = end_address
4C8938 ; STORE64_R15_into_Address_RAX # device_path->end_address = end_address 4929FF ; sub_r15,rdi # restore r15 = executable
4929FF ; SUB_RDI_from_R15 # restore r15 = executable 4883C0 08 ; add_rax, !8 # next member
4883C0 08 ; ADDI8_RAX !8 # next member C600 7F ; mov_[rax],BYTE !0x7f # device_path[1].type = END_HARDWARE_DEVICE_PATH
C600 7F ; STOREI8_into_Address_RAX !0x7f # device_path[1].type = END_HARDWARE_DEVICE_PATH 48FFC0 ; inc_rax # next member
48FFC0 ; INC_RAX # next member C600 FF ; mov_[rax],BYTE !0xff # device_path[1].subtype = END_ENTIRE_DEVICE_PATH
C600 FF ; STOREI8_into_Address_RAX !0xff # device_path[1].subtype = END_ENTIRE_DEVICE_PATH 48FFC0 ; inc_rax # next member
48FFC0 ; INC_RAX # next member 66C700 0400 ; mov_[rax],WORD @4 # device_path[1].length = 4
66C700 0400 ; STOREI16_into_Address_RAX @4 # device_path[1].length = 4
# Load image # Load image
4150 ; PUSH_R8 # save device_path 4150 ; push_r8 # save device_path
50 ; PUSH_RAX # allocate stack for child_ih 50 ; push_rax # allocate stack for child_ih
54 ; PUSH_RSP # arg6 = &child_ih 54 ; push_rsp # arg6 = &child_ih
57 ; PUSH_RDI # arg5 = file size 57 ; push_rdi # arg5 = file size
4D89F9 ; COPY_R15_to_R9 # arg4 = executable 4D89F9 ; mov_r9,r15 # arg4 = executable
# arg3 = device_path # arg3 = device_path
488B15 %image_handle ; LOAD64_into_RDX_rel32 %image_handle # arg2 = image_handle 488B15 %image_handle ; mov_rdx,[rip+DWORD] %image_handle # arg2 = image_handle
31C9 ; XOR_ECX_ECX # arg1 = 0 31C9 ; xor_ecx,ecx # arg1 = 0
4883EC 20 ; SUBI8_RSP !32 # allocate shadow stack space for UEFI function 4883EC 20 ; sub_rsp, !32 # allocate shadow stack space for UEFI function
41FF96 C8000000 ; CALL_R14_Immediate32 %200 # system->boot->load_image() 41FF96 C8000000 ; call_[r14+DWORD] %200 # system->boot->load_image()
4883C4 30 ; ADDI8_RSP !48 # deallocate stack 4883C4 30 ; add_rsp, !48 # deallocate stack
5F ; POP_RDI # save child_ih 5F ; pop_rdi # save child_ih
# Free device_path pool # Free device_path pool
59 ; POP_RCX # arg1 = device_path 59 ; pop_rcx # arg1 = device_path
50 ; PUSH_RAX # allocate shadow stack space for UEFI function 50 ; push_rax # allocate shadow stack space for UEFI function
41FF56 48 ; CALL_R14_Immediate8 !72 # system->boot->free_pool(device_path) 41FF56 48 ; call_[r14+BYTE] !72 # system->boot->free_pool(device_path)
58 ; POP_RAX # deallocate stack 58 ; pop_rax # deallocate stack
# Free executable pool # Free executable pool
4C89F9 ; COPY_R15_to_RCX # arg1 = executable 4C89F9 ; mov_rcx,r15 # arg1 = executable
50 ; PUSH_RAX # allocate shadow stack space for UEFI function 50 ; push_rax # allocate shadow stack space for UEFI function
41FF56 48 ; CALL_R14_Immediate8 !72 # system->boot->free_pool(executable) 41FF56 48 ; call_[r14+BYTE] !72 # system->boot->free_pool(executable)
58 ; POP_RAX # deallocate stack 58 ; pop_rax # deallocate stack
# Open Child Image # Open Child Image
50 ; PUSH_RAX # allocate stack for child_image 4989F9 ; mov_r9,rdi # arg4 = child_ih
4989E0 ; COPY_RSP_to_R8 # arg3 = &child_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) 52 ; push_rdx # save &LOADED_IMAGE_PROTOCOL
52 ; PUSH_RDX # push last 64 bits onto stack 4C89C9 ; mov_rcx,r9 # arg1 = child_ih
488B15 %LOADED_IMAGE_PROTOCOL ; LOAD64_rel_RDX %LOADED_IMAGE_PROTOCOL # EFI_LOADED_IMAGE_PROTOCOL_GUID (first 64 bits) E8 %open_protocol ; call %open_protocol # open protocol
52 ; PUSH_RDX # push first 64 bits onto
4889E2 ; COPY_RSP_to_RDX # arg2 = &guid
6A 01 ; PUSH !1 # arg6 = EFI_OPEN_PROTOCOL_BY_HANDLE_PROTOCOL
6A 00 ; PUSH !0 # arg5 = NULL
4989F9 ; COPY_RDI_to_R9 # arg4 = child_ih
4889F9 ; COPY_RDI_to_RCX # arg1 = child_ih
4883EC 20 ; SUBI8_RSP !32 # allocate shadow stack space for UEFI function
41FF96 18010000 ; CALL_R14_Immediate32 %280 # system->boot->open_protocol(child_ih, &guid, &child_image, child_ih, 0, EFI_OPEN_PROTOCOL_BY_HANDLE_PROTOCOL)
4883C4 40 ; ADDI8_RSP !64 # deallocate stack
58 ; POP_RAX # get child_image
488958 38 ; STORE64_from_RBX_into_Address_RAX_Immediate8 !56 # child_image->load_options = command 488958 38 ; mov_[rax+BYTE],rbx !56 # child_image->load_options = command
488970 30 ; STORE64_from_RSI_into_Address_RAX_Immediate8 !48 # set child_image->load_options_size 488970 30 ; mov_[rax+BYTE],rsi !48 # set child_image->load_options_size
488B0D %image ; LOAD64_rel_RCX %image # get image 488B0D %image ; mov_rcx,[rip+DWORD] %image # get image
488B49 18 ; LOAD64_into_RCX_from_Address_RCX_Immediate8 !24 # image->device 488B49 18 ; mov_rcx,[rcx+BYTE] !24 # image->device
488948 18 ; STORE64_from_RCX_into_Address_RCX_Immediate8 !24 # child_image->device = image->device 488948 18 ; mov_[rax+BYTE],rcx !24 # child_image->device = image->device
4989F8 ; mov_r8,rdi # arg3 = image_handle
5A ; pop_rdx # arg2 = &LOADED_IMAGE_PROTOCOL
4C89C1 ; mov_rcx,r8 # arg1 = image_handle
E8 %close_protocol ; call %close_protocol # close protocol
# Run command # Run command
4D31C0 ; XOR_R8_R8 # arg3 = 0 (ExitData) 4D31C0 ; xor_r8,r8 # arg3 = 0 (ExitData)
31D2 ; XOR_EDX_EDX # arg2 = 0 (ExitData size) 31D2 ; xor_edx,edx # arg2 = 0 (ExitData size)
4889F9 ; COPY_RDI_to_RCX # arg1 = child_ih 4889F9 ; mov_rcx,rdi # arg1 = child_ih
50 ; PUSH_RAX # allocate shadow stack space for UEFI function 50 ; push_rax # allocate shadow stack space for UEFI
50 ; PUSH_RAX # allocate shadow stack space for UEFI function 50 ; push_rax # allocate shadow stack space for UEFI
50 ; PUSH_RAX # allocate shadow stack space for UEFI function 50 ; push_rax # allocate shadow stack space for UEFI
41FF96 D0000000 ; CALL_R14_Immediate32 %208 # system->boot->start_image() 41FF96 D0000000 ; call_[r14+DWORD] %208 # system->boot->start_image()
59 ; POP_RCX # deallocate stack 59 ; pop_rcx # deallocate stack
59 ; POP_RCX # deallocate stack 59 ; pop_rcx # deallocate stack
59 ; POP_RCX # deallocate stack 59 ; pop_rcx # deallocate stack
85C0 ; TEST_EAX_EAX # check if return code is 0 85C0 ; test_eax,eax # check if return code is 0
75 !print_error ; JNE8 !print_error # print error and exit 75 !print_error ; jne8 !print_error # print error and exit
E9 %next_command ; JMP32 %next_command # process another line from kaem script E9 %next_command ; jmp %next_command # process another line from kaem script
:print_error :print_error
50 ; PUSH_RAX # save exit code 50 ; push_rax # save exit code
488D15 %subprocess_error ; LEA_RDX_rel %subprocess_error # get error message 488D15 %subprocess_error ; lea_rdx,[rip+DWORD] %subprocess_error # get error message
E8 %File_Print ; CALLI32 %File_Print # print it E8 %File_Print ; call %File_Print # print it
58 ; POP_RAX # restore exit code 58 ; pop_rax # restore exit code
# Close script file and exit # Close script file and exit
:terminate :terminate
# Free pool # Free pool
4889D9 ; COPY_RBX_to_RCX # arg1 = command 4889D9 ; mov_rcx,rbx # arg1 = command
50 ; PUSH_RAX # save exit code 50 ; push_rax # save exit code
50 ; PUSH_RAX # allocate shadow stack space for UEFI function 50 ; push_rax # allocate shadow stack space for UEFI function
41FF56 48 ; CALL_R14_Immediate8 !72 # system->boot->free_pool(commmand) 41FF56 48 ; call_[r14+BYTE] !72 # system->boot->free_pool(commmand)
4C89E1 ; COPY_R12_to_RCX # arg1 = fin 4C89E1 ; mov_rcx,r12 # arg1 = fin
FF51 10 ; CALL_RCX_Immediate8 !16 # fin->close(fin) FF51 10 ; call_[rcx+BYTE] !16 # fin->close(fin)
58 ; POP_RAX # deallocate stack
58 ; POP_RAX # restore exit code 488B0D %rootdir ; mov_rcx,[rip+DWORD] %rootdir # arg1 = rootdir
FF51 10 ; call_[rcx+BYTE] !16 # rootdir->close(rootdir)
58 ; pop_rax # deallocate stack
58 ; pop_rax # restore exit code
# Exit without closing script file # Exit without closing script file
:terminate_2
4C8B05 %image_handle ; mov_r8,[rip+DWORD] %image_handle # arg3 = image_handle
4150 ; push_r8 # save image_handle
488D15 %SIMPLE_FS_PROTOCOL ; lea_rdx,[rip+DWORD] %SIMPLE_FS_PROTOCOL # guid = &SIMPLE_FS_PROTOCOL
488B0D %root_device ; mov_rcx,[rip+DWORD] %root_device # arg1 = root_device
E8 %close_protocol ; call %close_protocol # close protocol
4158 ; pop_r8 # 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
E8 %close_protocol ; call %close_protocol # close protocol
:abort :abort
4889EC ; COPY_RBP_to_RSP # restore stack 4889EC ; mov_rsp,rbp # restore stack
C3 ; RET C3 ; ret # return to UEFI
:File_Print :File_Print
488B0D %system_out ; LOAD64_rel_RCX %system_out # get system_out 488B0D %system_out ; mov_rcx,[rip+DWORD] %system_out # get system_out
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 for UEFI function
FF51 08 ; CALL_RCX_Immediate8 !8 # system->out->output_string(system->out, WCHAR*) FF51 08 ; call_[rcx+BYTE] !8 # system->out->output_string(system->out, WCHAR*)
58 ; POP_RAX # deallocate stack 58 ; pop_rax # deallocate stack
58 ; POP_RAX # deallocate stack 58 ; pop_rax # deallocate stack
C3 ; RET C3 ; ret
# read_byte function # read_byte function
# reads a single character # reads a single character
:read_byte :read_byte
4C89E1 ; COPY_R12_to_RCX # arg1 = fin 4C89E1 ; mov_rcx,r12 # 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 56 ; push_rsi # allocate stack
4989E0 ; COPY_RSP_to_R8 # arg3 = &c 4989E0 ; mov_r8,rsp # arg3 = &c
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 20 ; CALL_RCX_Immediate8 !32 # fin->read() 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 # deallocate stack 58 ; pop_rax # deallocate stack
58 ; POP_RAX # save c to rax 58 ; pop_rax # save c to rax
59 ; POP_RCX # save size to rcx 59 ; pop_rcx # save size to rcx
# If the file ended (0 bytes read) terminate # If the file ended (0 bytes read) terminate
85C9 ; TEST_ECX_ECX # if size = 0 85C9 ; test_ecx,ecx # if size = 0
74 !terminate ; JE8 !terminate # then we are done 74 !terminate ; je8 !terminate # then we are done
C3 ; RET # return C3 ; ret # return
# rcx: handle
# rdx: &guid
# r9: agent_handle
# returns interface
:open_protocol
50 ; push_rax # allocate stack for interface
4989E0 ; mov_r8,rsp # arg3 = &interface
6A 01 ; push !1 # arg6 = EFI_OPEN_PROTOCOL_BY_HANDLE_PROTOCOL
6A 00 ; push !0 # arg5 = NULL
4883EC 20 ; sub_rsp, !32 # allocate shadow stack space for UEFI function
41FF96 18010000 ; call_[r14+DWORD] %280 # system->boot->open_protocol(handle, &guid, &interface, agent_handle, 0, EFI_OPEN_PROTOCOL_BY_HANDLE_PROTOCOL)
4883C4 30 ; add_rsp, !48 # deallocate stack
58 ; pop_rax # get image
C3 ; ret
# rcx: handle
# rdx: &guid
# r8: agent_handle
:close_protocol
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(handle, &guid, agent_handle, 0)
4883C4 20 ; add_rsp, !32 # deallocate stack
C3 ; ret
# rdx: number of bytes to allocate
# r14: system->boot
# returns pointer in rax
:allocate_pool
52 ; push_rdx # allocate stack for pool pointer
4989E0 ; mov_r8,rsp # arg3 = &pool
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, &pool)
4883C4 18 ; add_rsp, !24 # deallocate stack
58 ; pop_rax # get pool
C3 ; ret
# Protocol GUIDs # Protocol GUIDs
:LOADED_IMAGE_PROTOCOL :LOADED_IMAGE_PROTOCOL
A1 31 1B 5B ; %0x5b1b31a1:SIMPLE_FS_PROTOCOL A1 31 1B 5B ; %0x5b1b31a1:SIMPLE_FS_PROTOCOL
62 95 ; @0x9562 22 5B 4E 96 ; %0x0964e5b22 62 95 ; @0x9562 22 5B 4E 96 ; %0x0964e5b22
D2 11 ; @0x11d2 59 64 ; @0x6459 D2 11 ; @0x11d2 59 64 ; @0x6459
: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
:FILE_INFO_PROTOCOL :FILE_INFO_PROTOCOL
92 6E 57 09 ; %0x09576e92 92 6E 57 09 ; %0x09576e92
3F 6D ; @0x6d3f 3F 6D ; @0x6d3f
D2 11 ; @0x11d2 D2 11 ; @0x11d2
# last 64-bits of GUID are identical to SIMPLE_FS_PROTOCOL 8E 39 00 A0 C9 69 72 3B ; !0x8e !0x39 !0 !0xa0 !0xc9 !0x69 !0x72 !0x3b
:default_file :default_file
6B 00 61 00 65 00 6D 00 2E 00 61 00 6D 00 64 00 36 00 34 00 00 00 ; L"kaem.amd64" 6B 00 61 00 65 00 6D 00 2E 00 61 00 6D 00 64 00 36 00 34 00 00 00 ; L"kaem.amd64"
@ -460,6 +450,12 @@
:image :image
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
:rootdir
00 00 00 00 00 00 00 00
:root_device
00 00 00 00 00 00 00 00
:system_out :system_out
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00

6
amd64/hex1.hex0
View File

@ -143,7 +143,7 @@ CF 03 00 00 ; SizeOfRawData
# Open Loaded Image protocol # Open Loaded Image protocol
4D89F9 ; mov_r9,r15 # arg4 = image_handle 4D89F9 ; mov_r9,r15 # arg4 = image_handle
488D15 9B030000 ; lea_rdx,[rip+DWORD] %LOADED_IMAGE_PROTOCOL # guid = &LOADED_IMAGE_PROTOCOL 488D15 9B030000 ; lea_rdx,[rip+DWORD] %LOADED_IMAGE_PROTOCOL # guid = &LOADED_IMAGE_PROTOCOL
4C89C9 ; mov_rcx,r9 # arg1 = image_handle 4C89C9 ; mov_rcx,r9 # arg1 = image_handle
50 ; push_rax # allocate stack for image 50 ; push_rax # allocate stack for image
4989E0 ; mov_r8,rsp # arg3 = &image 4989E0 ; mov_r8,rsp # arg3 = &image
@ -156,7 +156,7 @@ CF 03 00 00 ; SizeOfRawData
# Get root file system # Get root file system
4D89F9 ; mov_r9,r15 # arg4 = image_handle 4D89F9 ; mov_r9,r15 # arg4 = image_handle
488D15 86030000 ; lea_rdx,[rip+DWORD] %SIMPLE_FS_PROTOCOL # guid = &SIMPLE_FS_PROTOCOL 488D15 86030000 ; lea_rdx,[rip+DWORD] %SIMPLE_FS_PROTOCOL # guid = &SIMPLE_FS_PROTOCOL
488B4F 18 ; mov_rcx,[rdi+BYTE] !24 # arg1 = root_device = image->device 488B4F 18 ; mov_rcx,[rdi+BYTE] !24 # arg1 = root_device = image->device
4989CD ; mov_r13,rcx # save root_device 4989CD ; mov_r13,rcx # save root_device
50 ; push_rax # allocate stack for rootfs 50 ; push_rax # allocate stack for rootfs
@ -185,7 +185,7 @@ CF 03 00 00 ; SizeOfRawData
6A 00 ; push !0 # Save end of arguments (NULL) onto stack 6A 00 ; push !0 # Save end of arguments (NULL) onto stack
# :loop_options [_start + 0x71] # :loop_options [_start + 0x71]
4839D3 ; cmp_rbx,rdx # Check if we are done 4839D3 ; cmp_rbx,rdx # Check if we are done
74 14 ; je8 !loop_options_done # We are done 74 14 ; je8 !loop_options_done # We are done
4883EB 02 ; sub_rbx, !2 # --options 4883EB 02 ; sub_rbx, !2 # --options
8A03 ; mov_al,[rbx] # *options 8A03 ; mov_al,[rbx] # *options
3C 20 ; cmp_al, !0x20 # if *options != ' ' 3C 20 ; cmp_al, !0x20 # if *options != ' '

6
amd64/hex2.hex1
View File

@ -242,7 +242,7 @@ DD 06 00 00 ; SizeOfRawData
# rewind input file # rewind input file
4153 ; push_r11 # Protect r11 4153 ; push_r11 # Protect r11
488B0D %0 ; mov_rcx,[rip+DWORD] %fin # Using our input file 488B0D %0 ; mov_rcx,[rip+DWORD] %fin # 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+BYTE] !56 # fin->set_position(fin, 0) FF51 38 ; call_[rcx+BYTE] !56 # fin->set_position(fin, 0)
@ -500,7 +500,7 @@ DD 06 00 00 ; SizeOfRawData
488B0D %0 ; mov_rcx,[rip+DWORD] %fin # arg1 = fin 488B0D %0 ; mov_rcx,[rip+DWORD] %fin # arg1 = fin
6A 01 ; push !1 # size = 1 6A 01 ; push !1 # size = 1
4889E2 ; mov_rdx,rsb # arg2 = &size 4889E2 ; mov_rdx,rsb # arg2 = &size
31F6 ; xor_esi_esi # zero rsi 31F6 ; xor_esi,esi # zero rsi
56 ; push_rsi # allocate stack 56 ; push_rsi # allocate stack
4989E0 ; mov_rsp,r8 # arg3 = &input 4989E0 ; mov_rsp,r8 # arg3 = &input
50 ; push_rax # allocate shadow stack space for UEFI function 50 ; push_rax # allocate shadow stack space for UEFI function
@ -707,7 +707,7 @@ DD 06 00 00 ; SizeOfRawData
E9 %T ; jmp %terminate E9 %T ; jmp %terminate
:S #:Done :S #:Done
31C0 ; xor_eax_eax # Set exit code 0 31C0 ; xor_eax,eax # Set exit code 0
:T #:terminate :T #:terminate
50 ; push_rax # save exit code 50 ; push_rax # save exit code

715
amd64/kaem-minimal.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"
F7 03 00 00 ; VirtualSize 18 04 00 00 ; VirtualSize
00 10 00 00 ; VirtualAddress 00 10 00 00 ; VirtualAddress
F7 03 00 00 ; SizeOfRawData 18 04 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
@ -136,462 +136,459 @@ F7 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
48890D D5030000 ; STORE64_from_RCX_rel32 %image_handle # save image_handle 48890D E6030000 ; mov_[rip+DWORD],rcx %image_handle # save image_handle
488B42 40 ; LOAD64_into_RAX_from_Address_RDX_Immediate8 !64 # system->out 4889CB ; mov_rbx,rcx # save image_handle
488905 DA030000 ; STORE64_from_RAX_rel32 %system_out # save system->out 488B42 40 ; mov_rax,[rdx+BYTE] !64 # system->out
4C8B72 60 ; LOAD64_into_R14_from_Address_RDX_Immediate8 !96 # system->boot 488905 F8030000 ; mov_[rip+DWORD],rax %system_out # save system->out
4C8B72 60 ; mov_r14,[rdx+BYTE] !96 # system->boot
31C9 ; XOR_ECX_ECX # timeout = 0 31C9 ; xor_ecx,ecx # timeout = 0
31D2 ; XOR_EDX_EDX # watchdog_code = 0 31D2 ; xor_edx,edx # watchdog_code = 0
4D31C0 ; XOR_R8_R8 # data_size = 0 4D31C0 ; xor_r8,r8 # data_size = 0
4D31C9 ; XOR_R9_R9 # watchdog_data = 0 4D31C9 ; xor_r9,r9 # watchdog_data = 0
4883EC 20 ; SUBI8_RSP !32 # allocate shadow stack space for UEFI function 4883EC 20 ; sub_rsp, !32 # allocate shadow stack space for UEFI function
41FF96 F0000000 ; CALL_R14_Immediate32 %240 # system->boot->set_watchdog_timer 41FF96 F0000000 ; call_[r14+DWORD] %240 # system->boot->set_watchdog_timer
# Open Loaded Image protocol # Open Loaded Image protocol
50 ; PUSH_RAX # allocate stack for image 4989D9 ; mov_r9,rbx # arg4 = image_handle
4989E0 ; COPY_RSP_to_R8 # arg3 = &image 488D15 3F030000 ; lea_rdx,[rip+DWORD] %LOADED_IMAGE_PROTOCOL # guid = &LOADED_IMAGE_PROTOCOL
488B15 40030000 ; LOAD64_rel_RDX %LOADED_IMAGE_PROTOCOL_8 # EFI_LOADED_IMAGE_PROTOCOL_GUID (last 64 bits) 4889D9 ; mov_rcx,rbx # arg1 = image_handle
52 ; PUSH_RDX # push last 64 bits onto stack E8 F6020000 ; call %open_protocol # open protocol
488B15 30030000 ; LOAD64_rel_RDX %LOADED_IMAGE_PROTOCOL # EFI_LOADED_IMAGE_PROTOCOL_GUID (first 64 bits) 4889C7 ; mov_rdi,rax # save image
52 ; PUSH_RDX # push first 64 bits onto 488905 AB030000 ; mov_[rip+DWORD],rax %image # save image
4889E2 ; COPY_RSP_to_RDX # arg2 = &guid
6A 01 ; PUSH !1 # arg6 = EFI_OPEN_PROTOCOL_BY_HANDLE_PROTOCOL
6A 00 ; PUSH !0 # arg5 = NULL
4C8B0D 8F030000 ; LOAD64_into_R9_rel32 %image_handle # arg4 = image_handle
4C89C9 ; COPY_R9_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
488905 7D030000 ; STORE64_from_RAX_rel32 %image # save image
# Command line args
4889C1 ; COPY_RAX_to_RCX # copy image to rcx
488B58 38 ; LOAD64_into_RBX_from_Address_RAX_Immediate8 !56 # options = image->load_options
# Skip application name
# :loop_options1 [_start+0x71]
4883C3 02 ; ADDI8_RBX !2 # ++options
8A03 ; LOAD8_AL_from_Address_RBX # *options
3C 20 ; CMPI8_AL !0x20 # if *options == ' '
74 0D ; JE8 !loop_options2 # then jump
84C0 ; TEST_AL_AL # if options != 0
75 F2 ; JNE8 !loop_options1 # then loop
# Use default file
4C8D25 13030000 ; LEA_R12_rel %default_file # Use "kaem.amd64"
EB 07 ; JMP8 !root_fs # jump
# :loop_options2 [_start+0x88]
4883C3 02 ; ADDI8_RBX !2 # ++options
4989DC ; COPY_RBX_to_R12 # save input file
# :root_fs [_start+0x8F]
# Get root file system # Get root file system
50 ; PUSH_RAX # allocate stack for rootfs 4989D9 ; mov_r9,rbx # arg4 = image_handle
4989E0 ; COPY_RSP_to_R8 # arg3 = &rootfs 488D15 33030000 ; lea_rdx,[rip+DWORD] %SIMPLE_FS_PROTOCOL # guid = &SIMPLE_FS_PROTOCOL
488B15 EF020000 ; 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 48890D A6030000 ; mov_[rip+DWORD],rcx %root_device # save root_device
488B15 DF020000 ; LOAD64_rel_RDX %SIMPLE_FS_PROTOCOL # EFI_SIMPLE_FILE_SYSTEM_PROTOCOL_GUID (first 64 bits) E8 D2020000 ; call %open_protocol # open protocol
52 ; PUSH_RDX # push first 64 bits onto stack 4889C1 ; mov_rcx,rax # get rootfs
4889E2 ; COPY_RSP_to_RDX # arg2 = &guid
6A 01 ; PUSH !1 # arg6 = EFI_OPEN_PROTOCOL_BY_HANDLE_PROTOCOL
6A 00 ; PUSH !0 # arg5 = NULL
4C8B0D 2E030000 ; LOAD64_into_R9_rel32 %image_handle # arg4 = image_handle
488B49 18 ; LOAD64_into_RCX_from_Address_RCX_Immediate8 !24 # arg1 = root_device = image->device
4883EC 20 ; SUBI8_RSP !32 # allocate shadow stack space for UEFI function
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 488D15 8F030000 ; lea_rdx,[rip+DWORD] %rootdir # arg2 = &rootdir
4889E2 ; COPY_RSP_to_RDX # arg3 = &rootdir 50 ; push_rax # allocate shadow stack space for UEFI function space for UEFI function
50 ; PUSH_RAX # allocate shadow stack space for UEFI function 50 ; push_rax # allocate shadow stack space for UEFI function space for UEFI function
50 ; PUSH_RAX # allocate shadow stack space for UEFI function FF51 08 ; call_[rcx+BYTE] !8 # rootfs->open_volume(rootfs, &rootdir)
FF51 08 ; CALL_RCX_Immediate8 !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
415D ; POP_R13 # 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 [_start+0x85]
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 [_start+0x9E]
4158 ; pop_r8 # get input file
4D85C0 ; test_r8,r8 # Check if argument is specified
75 07 ; jne8 !arg_done # then use it
# Else use default_file
4C8D05 FE020000 ; lea_r8,[rip+DWORD] %default_file # Use "kaem.amd64"
# :arg_done [_start+0xAC]
# Open file for reading # Open file for reading
52 ; PUSH_RDX # allocate stack for fin 52 ; push_rdx # allocate stack for fin
4889E2 ; COPY_RSP_to_RDX # arg2 = &fin 4889E2 ; mov_rdx,rsp # arg2 = &fin
6A 01 ; PUSH !1 # arg5 = EFI_FILE_READ_ONLY 6A 01 ; push !1 # arg5 = EFI_FILE_READ_ONLY
6A 01 ; PUSH !1 # prepare to set arg4 to EFI_FILE_MODE_READ 6A 01 ; push !1 # prepare to set arg4 to EFI_FILE_MODE_READ
4159 ; POP_R9 # arg4 = EFI_FILE_MODE_READ 4159 ; pop_r9 # arg4 = EFI_FILE_MODE_READ
4D89E0 ; COPY_R12_to_R8 # arg3 = in # arg3 = in
4C89E9 ; COPY_R13_to_RCX # arg1 = rootdir 488B0D 43030000 ; mov_rcx,[rip+DWORD] %rootdir # 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()
85C0 ; TEST_EAX_EAX # if status != EFI_SUCCESS 85C0 ; test_eax,eax # if status != EFI_SUCCESS
0F85 51020000 ; JNE32 %abort # then exit without closing file 0F85 3E020000 ; jne %abort # then exit without closing file
4C8B6424 28 ; LOAD64_into_R12_from_Address_RSP_Immediate8 !40 # get fin 4C8B6424 28 ; mov_r12,[rsp+BYTE] !40 # get fin
# Allocate pool for command # Allocate pool for command
52 ; PUSH_RDX # allocate stack for command 31D2 ; xor_edx,edx # zero RDX
4989E0 ; COPY_RSP_to_R8 # arg3 = &command B6 10 ; mov_dh, !0x10 # arg2 = 4096 = 0x1000
31D2 ; XOR_EDX_EDX # zero RDX E8 8B020000 ; call %allocate_pool # allocate memory
B6 10 ; LOADI8_DH !0x10 # arg2 = 4096 = 0x1000 4889C3 ; mov_rbx,rax # get command
6A 02 ; PUSH !2
59 ; POP_RCX # arg1 = EFI_LOADER_DATA
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
41FF56 40 ; CALL_R14_Immediate8 !64 # system->boot->allocate_pool(EFI_LOADER_DATA, 4096, &commmand)
488B5C24 18 ; LOAD64_into_RBX_from_Address_RSP_Immediate8 !24 # get command
# :next_command [_start+0x10D] # :next_command [_start+0xDD]
31F6 ; XOR_ESI_ESI # i = 0 31F6 ; xor_esi,esi # i = 0
4D31FF ; XOR_R15_R15 # command_length = 0 4D31FF ; xor_r15,r15 # command_length = 0
# :read_command [_start+0x112] # :read_command [_start+0xE2]
E8 3E020000 ; CALLI32 %read_byte # read another byte c E8 36020000 ; call %read_byte # read another byte c
3C 0A ; CMPI8_AL !0xa # if c == '\n' 3C 0A ; cmp_al, !0xa # if c == '\n'
74 2A ; JE8 !read_command_done # then we are done with this command 74 2A ; je8 !read_command_done # then we are done with this command command command
3C 20 ; CMPI8_AL !0x20 # if c == ' ' 3C 20 ; cmp_al, !0x20 # if c == ' '
75 08 ; JNE8 !read_command_comments 75 08 ; jne8 !read_command_comments
4D85FF ; TEST_R15_R15 # and command_length == 0 4D85FF ; test_r15,r15 # and command_length == 0
75 03 ; JNE8 !read_command_comments 75 03 ; jne8 !read_command_comments
4989F7 ; COPY_RSI_to_R15 # command_length = i 4989F7 ; mov_r15,rsi # command_length = i
# :read_command_comments [_start+0x127] # :read_command_comments [_start+0xF7]
3C 23 ; CMPI8_AL !0x23 # if c == '#' then process comment 3C 23 ; cmp_al, !0x23 # if c == '#' then process comment
75 0B ; JNE8 !read_command_store_char # else store char 75 0B ; jne8 !read_command_store_char # else store char
# :read_command_skip_comment [_start+0x12B] # :read_command_skip_comment [_start+0xFB]
E8 25020000 ; CALLI32 %read_byte # get another char E8 1D020000 ; call %read_byte # get another char
3C 0A ; CMPI8_AL !0xa # if c == '\n' 3C 0A ; cmp_al, !0xa # if c == '\n'
75 F7 ; JNE8 !read_command_skip_comment # continue reading until newline 75 F7 ; jne8 !read_command_skip_comment # continue reading until newline
EB D7 ; JMP8 !next_command # deal with another line EB D7 ; jmp8 !next_command # deal with another line
# :read_command_store_char [_start+0x136] # :read_command_store_char [_start+0x106]
4801F3 ; ADD_RSI_to_RBX # rbx = &command[i] 4801F3 ; add_rbx,rsi # rbx = &command[i]
668903 ; STORE16_AX_into_Address_RBX # command[i] = c 668903 ; mov_[rbx],ax # command[i] = c
4829F3 ; SUB_RSI_from_RBX # rbx = &command[0] 4829F3 ; sub_rbx,rsi # rbx = &command[0]
4883C6 02 ; ADDI8_RSI !2 # location of the next char 4883C6 02 ; add_rsi, !2 # location of the next char
EB CD ; JMP8 !read_command # continue looping EB CD ; jmp8 !read_command # continue looping
# :read_command_done [_start+0x145] # :read_command_done [_start+0x115]
4D85FF ; TEST_R15_R15 # if command_length == 0 4D85FF ; test_r15,r15 # if command_length == 0
74 C3 ; JE8 !next_command # deal with another line 74 C3 ; je8 !next_command # deal with another line
4801F3 ; ADD_RSI_to_RBX # rbx = &command[i] 4801F3 ; add_rbx,rsi # rbx = &command[i]
66C703 0000 ; STOREI16_into_Address_RBX @0 # command[i] = 0 66C703 0000 ; mov_[rbx],WORD @0 # command[i] = 0
4829F3 ; SUB_RSI_from_RBX # rbx = &command[0] 4829F3 ; sub_rbx,rsi # rbx = &command[0]
4883C6 02 ; ADDI8_RSI !2 # add 2 to get string length with NULL terminator 4883C6 02 ; add_rsi, !2 # add 2 to get string length with NULL terminator
488D15 4F020000 ; LEA_RDX_rel %prefix # get prefix " +> " 488D15 90020000 ; lea_rdx,[rip+DWORD] %prefix # get prefix " +> "
E8 E1010000 ; CALLI32 %File_Print # print it E8 D9010000 ; call %File_Print # print it
4889DA ; COPY_RBX_to_RDX # get command 4889DA ; mov_rdx,rbx # get command
E8 D9010000 ; CALLI32 %File_Print # print it E8 D1010000 ; call %File_Print # print it
488D15 65020000 ; LEA_RDX_rel %suffix # get suffix "\n\r" 488D15 A6020000 ; lea_rdx,[rip+DWORD] %suffix # get suffix "\n\r"
E8 CD010000 ; CALLI32 %File_Print # print it E8 C5010000 ; call %File_Print # print it
# Remove command line options # Remove command line options
4901DF ; ADD_RBX_to_R15 # go to the space separating command and its options 4901DF ; add_r15,rbx # go to the space separating command and its options
6641C707 0000 ; STOREI16_into_Address_R15 @0 # zero it to hide command line options 6641C707 0000 ; mov_[r15],WORD @0 # zero it to hide command line options
# Open executable file for reading # Open executable file for reading
52 ; PUSH_RDX # allocate stack for fcmd 52 ; push_rdx # allocate stack for fcmd
4889E2 ; COPY_RSP_to_RDX # arg2 = &fcmd 4889E2 ; mov_rdx,rsp # arg2 = &fcmd
6A 01 ; PUSH !1 # arg5 = EFI_FILE_READ_ONLY 6A 01 ; push !1 # arg5 = EFI_FILE_READ_ONLY
6A 01 ; PUSH !1 # prepare to set arg4 to EFI_FILE_MODE_READ 6A 01 ; push !1 # prepare to set arg4 to EFI_FILE_MODE_READ
4159 ; POP_R9 # arg4 = EFI_FILE_MODE_READ 4159 ; pop_r9 # arg4 = EFI_FILE_MODE_READ
4989D8 ; COPY_RBX_to_R8 # arg3 = command 4989D8 ; mov_r8,rbx # arg3 = command
4C89E9 ; COPY_R13_to_RCX # arg1 = rootdir 488B0D 9A020000 ; mov_rcx,[rip+DWORD] %rootdir # 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()
85C0 ; TEST_EAX_EAX # if status != EFI_SUCCESS 85C0 ; test_eax,eax # if status != EFI_SUCCESS
0F85 82010000 ; JNE32 %print_error # then exit 0F85 3F010000 ; jne %print_error # then exit
4883C4 28 ; ADDI8_RSP !40 # deallocate stack 4883C4 28 ; add_rsp, !40 # deallocate stack
5F ; POP_RDI # get fcmd 5F ; pop_rdi # get fcmd
# Restore command line arguments # Restore command line arguments
6641C707 2000 ; STOREI16_into_Address_R15 @0x20 # restore command line options by readding ' ' 6641C707 2000 ; STOREI16_into_Address_R15 @0x20 # restore command line options by readding ' '
# Allocate pool for file_info # Allocate pool for file_info
52 ; PUSH_RDX # allocate stack for file_info 31D2 ; xor_edx,edx # zero RDX
4989E0 ; COPY_RSP_to_R8 # arg3 = &file_info B6 10 ; mov_dh, !0x10 # arg2 = 4096 = 0x1000
31D2 ; XOR_EDX_EDX # zero RDX E8 DC010000 ; call %allocate pool # allocate memory
B6 10 ; LOADI8_DH !0x10 # arg2 = 4096 = 0x1000 4989C1 ; mov_r9,rax # get file_info (arg4 for get_info)
6A 02 ; PUSH !2
59 ; POP_RCX # arg1 = EFI_LOADER_DATA
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
41FF56 40 ; CALL_R14_Immediate8 !64 # system->boot->allocate_pool(EFI_LOADER_DATA, 4096, &commmand)
58 ; POP_RAX # deallocate stack
58 ; POP_RAX # deallocate stack
58 ; POP_RAX # deallocate stack
4159 ; POP_R9 # get file_info (arg4 for get_info)
# Get file info # Get file info
4151 ; PUSH_R9 # save file_info 50 ; push_rax # save file_info
50 ; PUSH_RAX # allocate stack for file_size 50 ; push_rax # allocate stack for file_size
4989E0 ; COPY_RSP_to_R8 # arg3 = &file_size 4989E0 ; mov_r8,rsp # arg3 = &file_size
49C700 00100000 ; STOREI32_into_Address_R8 %0x1000 # file_size = 0x1000 49C700 00100000 ; mov_[r8], %0x1000 # file_size = 0x1000
488B15 B2010000 ; LOAD64_rel_RDX %SIMPLE_FS_PROTOCOL_8 # EFI_FILE_INFO_PROTOCOL (last 64 bits) 488D15 FB010000 ; lea_rdx,[rip+DWORD] %FILE_INFO_PROTOCOL # arg2 = &EFI_FILE_INFO_PROTOCOL
52 ; PUSH_RDX # push last 64 bits onto stack 4889F9 ; mov_rcx,rdi # arg1 = fcmd
488B15 B2010000 ; LOAD64_rel_RDX %FILE_INFO_PROTOCOL # EFI_FILE_INFO_PROTOCOL (first 64 bits) 4883EC 20 ; sub_rsp, !32 # allocate shadow stack space for UEFI function
52 ; PUSH_RDX # push first 64 bits onto stack FF51 40 ; call_[rcx+BYTE] !64 # fcmd->get_info(fcmd, &guid, &file_size, file_info)
4889E2 ; COPY_RSP_to_RDX # arg2 = &guid 4883C4 28 ; add_rsp, !40 # deallocate stack
4889F9 ; COPY_RDI_to_RCX # arg1 = fcmd 59 ; pop_rcx # restore file_info
4883EC 20 ; SUBI8_RSP !32 # allocate shadow stack space for UEFI function 488B51 08 ; mov_rdx,[rcx+BYTE] !8 # get file_size
FF51 40 ; CALL_RCX_Immediate8 !64 # fcmd->get_info(fcmd, &guid, &file_size, file_info)
4883C4 38 ; ADDI8_RSP !56 # deallocate stack
59 ; POP_RCX # restore file_info
488B51 08 ; LOAD64_into_RDX_from_Address_RCX_Immediate8 !8 # get file_size
# Free file_info pool # Free file_info pool
52 ; PUSH_RDX # save file_size onto stack 52 ; push_rdx # save file_size onto stack
50 ; PUSH_RAX # allocate shadow stack space for UEFI function 50 ; push_rax # allocate shadow stack space for UEFI function
41FF56 48 ; CALL_R14_Immediate8 !72 # system->boot->free_pool(file_info) 41FF56 48 ; call_[r14+BYTE] !72 # system->boot->free_pool(file_info)
58 ; POP_RAX # deallocate stack 58 ; pop_rax # deallocate stack
5A ; POP_RDX # restore file_size from stack (arg2 for allocate_pool) 5A ; pop_rdx # restore file_size from stack (arg2 for allocate_pool)
# Allocate pool for executable # Allocate pool for executable [_start+0x1BA]
52 ; PUSH_RDX # save file_size onto stack 52 ; push_rdx # save file_size onto stack
52 ; PUSH_RDX # allocate stack for executable E8 A5010000 ; call %allocate_pool # allocate memory
4989E0 ; COPY_RSP_to_R8 # arg3 = &executable 4989C7 ; mov_r15,rax # get executable
6A 02 ; PUSH !2 5A ; pop_rdx # restore file_size
59 ; POP_RCX # arg1 = EFI_LOADER_DATA
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
41FF56 40 ; CALL_R14_Immediate8 !64 # system->boot->allocate_pool(EFI_LOADER_DATA, file_size, &executable)
58 ; POP_RAX # deallocate stack
58 ; POP_RAX # deallocate stack
58 ; POP_RAX # deallocate stack
415F ; POP_R15 # get executable
5A ; POP_RDX # restore file_size
# Load executable into memory # Load executable into memory
52 ; PUSH_RDX # save file_size onto stack 52 ; push_rdx # save file_size onto stack
4D89F8 ; COPY_R15_to_R8 # arg3 = executable 4D89F8 ; mov_r8,r15 # arg3 = executable
4889E2 ; COPY_RSP_to_RDX # arg2 = &file_size 4889E2 ; mov_rdx,rsp # arg2 = &file_size
4889F9 ; COPY_RDI_to_RCX # arg1 = fcmd 4889F9 ; mov_rcx,rdi # arg1 = fcmd
50 ; PUSH_RAX # allocate shadow stack space for UEFI function 50 ; push_rax # allocate shadow stack space for UEFI
50 ; PUSH_RAX # allocate shadow stack space for UEFI function 50 ; push_rax # allocate shadow stack space for UEFI
50 ; PUSH_RAX # allocate shadow stack space for UEFI function 50 ; push_rax # allocate shadow stack space for UEFI
FF51 20 ; CALL_RCX_Immediate8 !32 # fcmd->read(fcmd, &file_size, executable) FF51 20 ; call_[rcx+BYTE] !32 # fcmd->read(fcmd, &file_size, executable)
58 ; POP_RAX # deallocate stack 58 ; pop_rax # deallocate stack
58 ; POP_RAX # deallocate stack 58 ; pop_rax # deallocate stack
58 ; POP_RAX # deallocate stack 58 ; pop_rax # deallocate stack
# Close fcmd # Close fcmd
50 ; PUSH_RAX # allocate shadow stack space for UEFI function 50 ; push_rax # allocate shadow stack space for UEFI
4889F9 ; COPY_RDI_to_RCX # arg1 = fcmd 4889F9 ; mov_rcx,rdi # arg1 = fcmd
FF51 10 ; CALL_RCX_Immediate8 !16 # fcmd->close(fcmd) FF51 10 ; call_[rcx+BYTE] !16 # fcmd->close(fcmd)
58 ; POP_RAX # deallocate stack 58 ; pop_rax # deallocate stack
5F ; POP_RDI # restore file_size 5F ; pop_rdi # restore file_size
# Allocate memory for device_path struct # Allocate memory for device_path struct
52 ; PUSH_RDX # allocate stack for device_path 6A 1C ; push !28 # 4 + sizeof(struct efi_device_path_protocol)
4989E0 ; COPY_RSP_to_R8 # arg3 = &device_path 5A ; pop_rdx # arg2 = 28
6A 1C ; PUSH !28 # 4 + sizeof(struct efi_device_path_protocol) E8 7D010000 ; call %allocate_pool # allocate memory
5A ; POP_RDX # arg2 = 28 4989C0 ; mov_r8,rax # get device_path
6A 02 ; PUSH !2
59 ; POP_RCX # arg1 = EFI_LOADER_DATA
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
41FF56 40 ; CALL_R14_Immediate8 !64 # system->boot->allocate_pool(EFI_LOADER_DATA, 28, &device_path)
58 ; POP_RAX # deallocate stack
58 ; POP_RAX # deallocate stack
58 ; POP_RAX # deallocate stack
4158 ; POP_R8 # get device_path
# Initialize struct # Initialize struct
4C89C0 ; COPY_R8_to_RAX # Make a pointer to device_path members C600 01 ; mov_[rax],BYTE !1 # device_path->type = HARDWARE_DEVICE_PATH
C600 01 ; STOREI8_into_Address_RAX !1 # device_path->type = HARDWARE_DEVICE_PATH 48FFC0 ; inc_rax # next member
48FFC0 ; INC_RAX # next member C600 03 ; mov_[rax],BYTE !3 # device_path->subtype = MEMORY_MAPPED
C600 03 ; STOREI8_into_Address_RAX !3 # device_path->subtype = MEMORY_MAPPED 48FFC0 ; inc_rax # next member
48FFC0 ; INC_RAX # next member 66C700 1800 ; mov_[rax],WORD @24 # device_path->length = 24
66C700 1800 ; STOREI16_into_Address_RAX @24 # device_path->length = 24 4883C0 02 ; add_rax, !2 # next member
4883C0 02 ; ADDI8_RAX !2 # next member C700 01000000 ; mov_[rax], %1 # device_path->memory_type = EFI_LOADER_CODE
C700 01000000 ; STOREI32_into_Address_RAX %1 # device_path->memory_type = EFI_LOADER_CODE 4883C0 04 ; add_rax, !4 # next member
4883C0 04 ; ADDI8_RAX !4 # next member 4C8938 ; mov_[rax],r15 # device_path->start_address = executable
4C8938 ; STORE64_R15_into_Address_RAX # device_path->start_address = executable 4883C0 08 ; add_rax, !8 # next member
4883C0 08 ; ADDI8_RAX !8 # next member 4901FF ; add_r15,rdi # end_address = executable + file_size
4901FF ; ADD_RDI_to_R15 # end_address = executable + file_size 4C8938 ; mov_[rax],r15 # device_path->end_address = end_address
4C8938 ; STORE64_R15_into_Address_RAX # device_path->end_address = end_address 4929FF ; sub_r15,rdi # restore r15 = executable
4929FF ; SUB_RDI_from_R15 # restore r15 = executable 4883C0 08 ; add_rax, !8 # next member
4883C0 08 ; ADDI8_RAX !8 # next member C600 7F ; mov_[rax],BYTE !0x7f # device_path[1].type = END_HARDWARE_DEVICE_PATH
C600 7F ; STOREI8_into_Address_RAX !0x7f # device_path[1].type = END_HARDWARE_DEVICE_PATH 48FFC0 ; inc_rax # next member
48FFC0 ; INC_RAX # next member C600 FF ; mov_[rax],BYTE !0xff # device_path[1].subtype = END_ENTIRE_DEVICE_PATH
C600 FF ; STOREI8_into_Address_RAX !0xff # device_path[1].subtype = END_ENTIRE_DEVICE_PATH 48FFC0 ; inc_rax # next member
48FFC0 ; INC_RAX # next member 66C700 0400 ; mov_[rax],WORD @4 # device_path[1].length = 4
66C700 0400 ; STOREI16_into_Address_RAX @4 # device_path[1].length = 4
# Load image # Load image
4150 ; PUSH_R8 # save device_path 4150 ; push_r8 # save device_path
50 ; PUSH_RAX # allocate stack for child_ih 50 ; push_rax # allocate stack for child_ih
54 ; PUSH_RSP # arg6 = &child_ih 54 ; push_rsp # arg6 = &child_ih
57 ; PUSH_RDI # arg5 = file size 57 ; push_rdi # arg5 = file size
4D89F9 ; COPY_R15_to_R9 # arg4 = executable 4D89F9 ; mov_r9,r15 # arg4 = executable
# arg3 = device_path # arg3 = device_path
488B15 44010000 ; LOAD64_into_RDX_rel32 %image_handle # arg2 = image_handle 488B15 B2010000 ; mov_rdx,[rip+DWORD] %image_handle # arg2 = image_handle
31C9 ; XOR_ECX_ECX # arg1 = 0 31C9 ; xor_ecx,ecx # arg1 = 0
4883EC 20 ; SUBI8_RSP !32 # allocate shadow stack space for UEFI function 4883EC 20 ; sub_rsp, !32 # allocate shadow stack space for UEFI function
41FF96 C8000000 ; CALL_R14_Immediate32 %200 # system->boot->load_image() 41FF96 C8000000 ; call_[r14+DWORD] %200 # system->boot->load_image()
4883C4 30 ; ADDI8_RSP !48 # deallocate stack 4883C4 30 ; add_rsp, !48 # deallocate stack
5F ; POP_RDI # save child_ih 5F ; pop_rdi # save child_ih
# Free device_path pool # Free device_path pool
59 ; POP_RCX # arg1 = device_path 59 ; pop_rcx # arg1 = device_path
50 ; PUSH_RAX # allocate shadow stack space for UEFI function 50 ; push_rax # allocate shadow stack space for UEFI function
41FF56 48 ; CALL_R14_Immediate8 !72 # system->boot->free_pool(device_path) 41FF56 48 ; call_[r14+BYTE] !72 # system->boot->free_pool(device_path)
58 ; POP_RAX # deallocate stack 58 ; pop_rax # deallocate stack
# Free executable pool # Free executable pool
4C89F9 ; COPY_R15_to_RCX # arg1 = executable 4C89F9 ; mov_rcx,r15 # arg1 = executable
50 ; PUSH_RAX # allocate shadow stack space for UEFI function 50 ; push_rax # allocate shadow stack space for UEFI function
41FF56 48 ; CALL_R14_Immediate8 !72 # system->boot->free_pool(executable) 41FF56 48 ; call_[r14+BYTE] !72 # system->boot->free_pool(executable)
58 ; POP_RAX # deallocate stack 58 ; pop_rax # deallocate stack
# Open Child Image # Open Child Image [_start+0x260]
50 ; PUSH_RAX # allocate stack for child_image 4989F9 ; mov_r9,rdi # arg4 = child_ih
4989E0 ; COPY_RSP_to_R8 # arg3 = &child_image 488D15 10010000 ; lea_rdx,[rip+DWORD] %LOADED_IMAGE_PROTOCOL # guid = &LOADED_IMAGE_PROTOCOL
488B15 B1000000 ; LOAD64_rel_RDX %LOADED_IMAGE_PROTOCOL_8 # EFI_LOADED_IMAGE_PROTOCOL_GUID (last 64 bits) 52 ; push_rdx # save &LOADED_IMAGE_PROTOCOL
52 ; PUSH_RDX # push last 64 bits onto stack 4C89C9 ; mov_rcx,r9 # arg1 = child_ih
488B15 A1000000 ; LOAD64_rel_RDX %LOADED_IMAGE_PROTOCOL # EFI_LOADED_IMAGE_PROTOCOL_GUID (first 64 bits) E8 C6000000 ; call %open_protocol # open protocol
52 ; PUSH_RDX # push first 64 bits onto
4889E2 ; COPY_RSP_to_RDX # arg2 = &guid
6A 01 ; PUSH !1 # arg6 = EFI_OPEN_PROTOCOL_BY_HANDLE_PROTOCOL
6A 00 ; PUSH !0 # arg5 = NULL
4989F9 ; COPY_RDI_to_R9 # arg4 = child_ih
4889F9 ; COPY_RDI_to_RCX # arg1 = child_ih
4883EC 20 ; SUBI8_RSP !32 # allocate shadow stack space for UEFI function
41FF96 18010000 ; CALL_R14_Immediate32 %280 # system->boot->open_protocol(child_ih, &guid, &child_image, child_ih, 0, EFI_OPEN_PROTOCOL_BY_HANDLE_PROTOCOL)
4883C4 40 ; ADDI8_RSP !64 # deallocate stack
58 ; POP_RAX # get child_image
488958 38 ; STORE64_from_RBX_into_Address_RAX_Immediate8 !56 # child_image->load_options = command 488958 38 ; mov_[rax+BYTE],rbx !56 # child_image->load_options = command
488970 30 ; STORE64_from_RSI_into_Address_RAX_Immediate8 !48 # set child_image->load_options_size 488970 30 ; mov_[rax+BYTE],rsi !48 # set child_image->load_options_size
488B0D EA000000 ; LOAD64_rel_RCX %image # get image 488B0D 76010000 ; mov_rcx,[rip+DWORD] %image # get image
488B49 18 ; LOAD64_into_RCX_from_Address_RCX_Immediate8 !24 # image->device 488B49 18 ; mov_rcx,[rcx+BYTE] !24 # image->device
488948 18 ; STORE64_from_RCX_into_Address_RCX_Immediate8 !24 # child_image->device = image->device 488948 18 ; mov_[rax+BYTE],rcx !24 # child_image->device = image->device
4989F8 ; mov_r8,rdi # arg3 = image_handle
5A ; pop_rdx # arg2 = &LOADED_IMAGE_PROTOCOL
4C89C1 ; mov_rcx,r8 # arg1 = image_handle
E8 BC000000 ; call %close_protocol # close protocol
# Run command # Run command
4D31C0 ; XOR_R8_R8 # arg3 = 0 (ExitData) 4D31C0 ; xor_r8,r8 # arg3 = 0 (ExitData)
31D2 ; XOR_EDX_EDX # arg2 = 0 (ExitData size) 31D2 ; xor_edx,edx # arg2 = 0 (ExitData size)
4889F9 ; COPY_RDI_to_RCX # arg1 = child_ih 4889F9 ; mov_rcx,rdi # arg1 = child_ih
50 ; PUSH_RAX # allocate shadow stack space for UEFI function 50 ; push_rax # allocate shadow stack space for UEFI
50 ; PUSH_RAX # allocate shadow stack space for UEFI function 50 ; push_rax # allocate shadow stack space for UEFI
50 ; PUSH_RAX # allocate shadow stack space for UEFI function 50 ; push_rax # allocate shadow stack space for UEFI
41FF96 D0000000 ; CALL_R14_Immediate32 %208 # system->boot->start_image() 41FF96 D0000000 ; call_[r14+DWORD] %208 # system->boot->start_image()
59 ; POP_RCX # deallocate stack 59 ; pop_rcx # deallocate stack
59 ; POP_RCX # deallocate stack 59 ; pop_rcx # deallocate stack
59 ; POP_RCX # deallocate stack 59 ; pop_rcx # deallocate stack
85C0 ; TEST_EAX_EAX # check if return code is 0 85C0 ; test_eax,eax # check if return code is 0
75 05 ; JNE8 !print_error # print error and exit 75 05 ; jne8 !print_error # print error and exit
E9 EAFDFFFF ; JMP32 %next_command # process another line from kaem script E9 29FEFFFF ; jmp %next_command # process another line from kaem script
# :print_error [_start+0x323] # :print_error [_start+0x2B4]
50 ; PUSH_RAX # save exit code 50 ; push_rax # save exit code
488D15 8E000000 ; LEA_RDX_rel %subprocess_error # get error message 488D15 0E010000 ; lea_rdx,[rip+DWORD] %subprocess_error # get error message
E8 16000000 ; CALLI32 %File_Print # print it E8 4D000000 ; call %File_Print # print it
58 ; POP_RAX # restore exit code 58 ; pop_rax # restore exit code
# Close script file and exit # Close script file and exit
# :terminate [_start+0x331] # :terminate [_start+0x2C2]
# Free pool # Free pool
4889D9 ; COPY_RBX_to_RCX # arg1 = command 4889D9 ; mov_rcx,rbx # arg1 = command
50 ; PUSH_RAX # save exit code 50 ; push_rax # save exit code
50 ; PUSH_RAX # allocate shadow stack space for UEFI function 50 ; push_rax # allocate shadow stack space for UEFI function
41FF56 48 ; CALL_R14_Immediate8 !72 # system->boot->free_pool(commmand) 41FF56 48 ; call_[r14+BYTE] !72 # system->boot->free_pool(commmand)
4C89E1 ; COPY_R12_to_RCX # arg1 = fin 4C89E1 ; mov_rcx,r12 # arg1 = fin
FF51 10 ; CALL_RCX_Immediate8 !16 # fin->close(fin) FF51 10 ; call_[rcx+BYTE] !16 # fin->close(fin)
58 ; POP_RAX # deallocate stack
58 ; POP_RAX # restore exit code 488B0D 28010000 ; mov_rcx,[rip+DWORD] %rootdir # arg1 = rootdir
FF51 10 ; call_[rcx+BYTE] !16 # rootdir->close(rootdir)
58 ; pop_rax # deallocate stack
58 ; pop_rax # restore exit code
# Exit without closing script file # Exit without closing script file
# :abort [_start+0x342] # :terminate_2 [_start+0x2DD]
4889EC ; COPY_RBP_to_RSP # restore stack 4C8B05 0C010000 ; mov_r8,[rip+DWORD] %image_handle # arg3 = image_handle
C3 ; RET 4150 ; push_r8 # save image_handle
488D15 9D000000 ; lea_rdx,[rip+DWORD] %SIMPLE_FS_PROTOCOL # guid = &SIMPLE_FS_PROTOCOL
488B0D 14010000 ; mov_rcx,[rip+DWORD] %root_device # arg1 = root_device
E8 59000000 ; call %close_protocol # close protocol
# :File_Print [_start+0x346] 4158 ; pop_r8 # arg3 = image_handle
488B0D A2000000 ; LOAD64_rel_RCX %system_out # get system_out 488D15 78000000 ; lea_rdx,[rip+DWORD] %LOADED_IMAGE_PROTOCOL # guid = &LOADED_IMAGE_PROTOCOL
50 ; PUSH_RAX # allocate shadow stack space for UEFI function 4C89C1 ; mov_rcx,r8 # arg1 = image_handle
50 ; PUSH_RAX # allocate shadow stack space for UEFI function E8 48000000 ; call %close_protocol # close protocol
FF51 08 ; CALL_RCX_Immediate8 !8 # system->out->output_string(system->out, WCHAR*)
58 ; POP_RAX # deallocate stack # :abort [_start+0x30A]
58 ; POP_RAX # deallocate stack 4889EC ; mov_rsp,rbp # restore stack
C3 ; RET C3 ; ret # return to UEFI
# :File_Print [_start+0x30E]
488B0D FB000000 ; mov_rcx,[rip+DWORD] %system_out # get system_out
50 ; push_rax # allocate shadow stack space for UEFI function
50 ; push_rax # allocate shadow stack space for UEFI function for UEFI function
FF51 08 ; call_[rcx+BYTE] !8 # system->out->output_string(system->out, WCHAR*)
58 ; pop_rax # deallocate stack
58 ; pop_rax # deallocate stack
C3 ; ret
# read_byte function # read_byte function
# reads a single character # reads a single character
# :read_byte [_start+0x355] # :read_byte [_start+0x31D]
4C89E1 ; COPY_R12_to_RCX # arg1 = fin 4C89E1 ; mov_rcx,r12 # 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 56 ; push_rsi # allocate stack
4989E0 ; COPY_RSP_to_R8 # arg3 = &c 4989E0 ; mov_r8,rsp # arg3 = &c
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 20 ; CALL_RCX_Immediate8 !32 # fin->read() 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 # deallocate stack 58 ; pop_rax # deallocate stack
58 ; POP_RAX # save c to rax 58 ; pop_rax # save c to rax
59 ; POP_RCX # save size to rcx 59 ; pop_rcx # save size to rcx
# If the file ended (0 bytes read) terminate # If the file ended (0 bytes read) terminate
85C9 ; TEST_ECX_ECX # if size = 0 85C9 ; test_ecx,ecx # if size = 0
74 C1 ; JE8 !terminate # then we are done 74 8A ; je8 !terminate # then we are done
C3 ; RET # return C3 ; ret # return
# rcx: handle
# rdx: &guid
# r9: agent_handle
# returns interface
# :open_protocol [_start+0x339]
50 ; push_rax # allocate stack for interface
4989E0 ; mov_r8,rsp # arg3 = &interface
6A 01 ; push !1 # arg6 = EFI_OPEN_PROTOCOL_BY_HANDLE_PROTOCOL
6A 00 ; push !0 # arg5 = NULL
4883EC 20 ; sub_rsp, !32 # allocate shadow stack space for UEFI function
41FF96 18010000 ; call_[r14+DWORD] %280 # system->boot->open_protocol(handle, &guid, &interface, agent_handle, 0, EFI_OPEN_PROTOCOL_BY_HANDLE_PROTOCOL)
4883C4 30 ; add_rsp, !48 # deallocate stack
58 ; pop_rax # get image
C3 ; ret
# rcx: handle
# rdx: &guid
# r8: agent_handle
# :close_protocol [_start+0x352]
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(handle, &guid, agent_handle, 0)
4883C4 20 ; add_rsp, !32 # deallocate stack
C3 ; ret
# rdx: number of bytes to allocate
# r14: system->boot
# returns pointer in rax
# :allocate_pool [_start+0x365]
52 ; push_rdx # allocate stack for pool pointer
4989E0 ; mov_r8,rsp # arg3 = &pool
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, &pool)
4883C4 18 ; add_rsp, !24 # deallocate stack
58 ; pop_rax # get pool
C3 ; ret
# Protocol GUIDs # Protocol GUIDs
# :LOADED_IMAGE_PROTOCOL [_start+0x371] # :LOADED_IMAGE_PROTOCOL [_start+0x37A]
A1 31 1B 5B ; %0x5b1b31a1:SIMPLE_FS_PROTOCOL A1 31 1B 5B ; %0x5b1b31a1:SIMPLE_FS_PROTOCOL
62 95 ; @0x9562 22 5B 4E 96 ; %0x0964e5b22 62 95 ; @0x9562 22 5B 4E 96 ; %0x0964e5b22
D2 11 ; @0x11d2 59 64 ; @0x6459 D2 11 ; @0x11d2 59 64 ; @0x6459
# :LOADED_IMAGE_PROTOCOL_8 [_start+0x379]
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+0x381] # :SIMPLE_FS_PROTOCOL [_start+0x38A]
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+0x389]
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
# :FILE_INFO_PROTOCOL [_start+0x391] # :FILE_INFO_PROTOCOL [_start+0x39A]
92 6E 57 09 ; %0x09576e92 92 6E 57 09 ; %0x09576e92
3F 6D ; @0x6d3f 3F 6D ; @0x6d3f
D2 11 ; @0x11d2 D2 11 ; @0x11d2
# last 64-bits of GUID are identical to SIMPLE_FS_PROTOCOL 8E 39 00 A0 C9 69 72 3B ; !0x8e !0x39 !0 !0xa0 !0xc9 !0x69 !0x72 !0x3b
# :default_file [_start+0x399] # :default_file [_start+0x3AA]
6B 00 61 00 65 00 6D 00 2E 00 61 00 6D 00 64 00 36 00 34 00 00 00 ; L"kaem.amd64" 6B 00 61 00 65 00 6D 00 2E 00 61 00 6D 00 64 00 36 00 34 00 00 00 ; L"kaem.amd64"
# :prefix [_start+0x3AF] # :prefix [_start+0x3C0]
20 00 2B 00 3E 00 20 00 00 00 ; L" +> " 20 00 2B 00 3E 00 20 00 00 00 ; L" +> "
# :subprocess_error [_start+0x3B9] # :subprocess_error [_start+0x3CA]
53 00 75 00 62 00 70 00 72 00 6F 00 63 00 65 00 53 00 75 00 62 00 70 00 72 00 6F 00 63 00 65 00
73 00 73 00 20 00 65 00 72 00 72 00 6F 00 72 00 73 00 73 00 20 00 65 00 72 00 72 00 6F 00 72 00
# :suffix [_start+0x3D9] # :suffix [_start+0x3EA]
0A 00 0D 00 00 00 ; L"Subprocess error\n\r" 0A 00 0D 00 00 00 ; L"Subprocess error\n\r"
# :image_handle [_start+0x3DF] # :image_handle [_start+0x3F0]
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
# :image [_start+0x3E7] # :image [_start+0x3F8]
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
# :system_out [_start+0x3EF] # :rootdir [_start+0x400]
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
# :PE32_end [_start+0x3F7] # :root_device [_start+0x408]
00 00 00 00 00 00 00 00
# :system_out [_start+0x410]
00 00 00 00 00 00 00 00
# :PE32_end [_start+0x418]