; flat assembler core
; Copyright (c) 1999-2007, Tomasz Grysztar.
; All rights reserved.
preprocessor:
mov edi,characters
xor al,al
make_characters_table:
stosb
inc al
jnz make_characters_table
mov esi,characters+'a'
mov edi,characters+'A'
mov ecx,26
rep movsb
mov edi,characters
mov esi,symbol_characters+1
movzx ecx,byte [esi-1]
xor eax,eax
mark_symbol_characters:
lodsb
mov byte [edi+eax],0
loop mark_symbol_characters
mov edi,locals_counter
mov ax,1 + '0' shl 8
stos word [edi]
mov edi,[memory_start]
mov [include_paths],edi
mov esi,include_variable
call get_environment_variable
xor al,al
stosb
mov [memory_start],edi
mov eax,[additional_memory]
mov [free_additional_memory],eax
mov eax,[additional_memory_end]
mov [labels_list],eax
xor eax,eax
mov [display_buffer],eax
mov [hash_tree],eax
mov [macro_status],al
mov esi,predefinitions
process_predefinitions:
movzx ecx,byte [esi]
test ecx,ecx
jz predefinitions_ok
inc esi
lea eax,[esi+ecx]
push eax
mov ch,10b
call add_preprocessor_symbol
pop esi
mov edi,[memory_start]
mov [edx+8],edi
convert_predefinition:
cmp edi,[memory_end]
jae out_of_memory
lods byte [esi]
or al,al
jz predefinition_converted
cmp al,20h
je convert_predefinition
mov ah,al
mov ebx,characters
xlat byte [ebx]
or al,al
jz predefinition_separator
cmp ah,27h
je predefinition_string
cmp ah,22h
je predefinition_string
mov byte [edi],1Ah
scas word [edi]
xchg al,ah
stos byte [edi]
mov ebx,characters
xor ecx,ecx
predefinition_symbol:
lods byte [esi]
stos byte [edi]
xlat byte [ebx]
or al,al
loopnzd predefinition_symbol
neg ecx
cmp ecx,255
ja invalid_definition
mov ebx,edi
sub ebx,ecx
mov byte [ebx-2],cl
found_predefinition_separator:
dec edi
mov ah,[esi-1]
predefinition_separator:
xchg al,ah
or al,al
jz predefinition_converted
cmp al,20h
je convert_line_data
cmp al,3Bh
je invalid_definition
cmp al,5Ch
je predefinition_backslash
stos byte [edi]
jmp convert_predefinition
predefinition_string:
mov al,22h
stos byte [edi]
scas dword [edi]
mov ebx,edi
copy_predefinition_string:
lods byte [esi]
stos byte [edi]
or al,al
jz invalid_definition
cmp al,ah
jne copy_predefinition_string
lods byte [esi]
cmp al,ah
je copy_predefinition_string
dec esi
dec edi
mov eax,edi
sub eax,ebx
mov [ebx-4],eax
jmp convert_predefinition
predefinition_backslash:
mov byte [edi],0
lods byte [esi]
or al,al
jz invalid_definition
cmp al,20h
je invalid_definition
cmp al,3Bh
je invalid_definition
mov al,1Ah
stos byte [edi]
mov ecx,edi
mov ax,5C01h
stos word [edi]
dec esi
group_predefinition_backslashes:
lods byte [esi]
cmp al,5Ch
jne predefinition_backslashed_symbol
stos byte [edi]
inc byte [ecx]
jmp group_predefinition_backslashes
predefinition_backslashed_symbol:
cmp al,20h
je invalid_definition
cmp al,22h
je invalid_definition
cmp al,27h
je invalid_definition
cmp al,3Bh
je invalid_definition
mov ah,al
mov ebx,characters
xlat byte [ebx]
or al,al
jz predefinition_backslashed_symbol_character
mov al,ah
convert_predefinition_backslashed_symbol:
stos byte [edi]
xlat byte [ebx]
or al,al
jz found_predefinition_separator
inc byte [ecx]
jz invalid_definition
lods byte [esi]
jmp convert_predefinition_backslashed_symbol
predefinition_backslashed_symbol_character:
mov al,ah
stos byte [edi]
inc byte [ecx]
jmp convert_predefinition
predefinition_converted:
mov [memory_start],edi
sub edi,[edx+8]
mov [edx+12],edi
jmp process_predefinitions
predefinitions_ok:
mov esi,[input_file]
mov edx,esi
call open
jc main_file_not_found
mov edi,[memory_start]
call preprocess_file
mov eax,[error_line]
mov [current_line],eax
cmp [macro_status],0
jne incomplete_macro
mov [source_start],edi
ret
preprocess_file:
push [memory_end]
push esi
mov al,2
xor edx,edx
call lseek
push eax
xor al,al
xor edx,edx
call lseek
pop ecx
mov edx,[memory_end]
dec edx
mov byte [edx],1Ah
sub edx,ecx
jc out_of_memory
mov esi,edx
cmp edx,edi
jbe out_of_memory
mov [memory_end],edx
call read
call close
pop edx
xor ecx,ecx
mov ebx,esi
preprocess_source:
inc ecx
mov [current_line],edi
mov eax,edx
stos dword [edi]
mov eax,ecx
stos dword [edi]
mov eax,esi
sub eax,ebx
stos dword [edi]
xor eax,eax
stos dword [edi]
push ebx edx
call convert_line
call preprocess_line
pop edx ebx
next_line:
cmp byte [esi-1],1Ah
jne preprocess_source
file_end:
pop [memory_end]
clc
ret
convert_line:
push ecx
test [macro_status],0Fh
jz convert_line_data
mov ax,3Bh
stos word [edi]
convert_line_data:
cmp edi,[memory_end]
jae out_of_memory
lods byte [esi]
cmp al,20h
je convert_line_data
cmp al,9
je convert_line_data
mov ah,al
mov ebx,characters
xlat byte [ebx]
or al,al
jz convert_separator
cmp ah,27h
je convert_string
cmp ah,22h
je convert_string
mov byte [edi],1Ah
scas word [edi]
xchg al,ah
stos byte [edi]
mov ebx,characters
xor ecx,ecx
convert_symbol:
lods byte [esi]
stos byte [edi]
xlat byte [ebx]
or al,al
loopnzd convert_symbol
neg ecx
cmp ecx,255
ja name_too_long
mov ebx,edi
sub ebx,ecx
mov byte [ebx-2],cl
found_separator:
dec edi
mov ah,[esi-1]
convert_separator:
xchg al,ah
cmp al,20h
jb control_character
je convert_line_data
symbol_character:
cmp al,3Bh
je ignore_comment
cmp al,5Ch
je backslash_character
stos byte [edi]
jmp convert_line_data
control_character:
cmp al,1Ah
je line_end
cmp al,0Dh
je cr_character
cmp al,0Ah
je lf_character
cmp al,9
je convert_line_data
or al,al
jnz symbol_character
jmp line_end
lf_character:
lods byte [esi]
cmp al,0Dh
je line_end
dec esi
jmp line_end
cr_character:
lods byte [esi]
cmp al,0Ah
je line_end
dec esi
jmp line_end
convert_string:
mov al,22h
stos byte [edi]
scas dword [edi]
mov ebx,edi
copy_string:
lods byte [esi]
stos byte [edi]
cmp al,0Ah
je missing_end_quote
cmp al,0Dh
je missing_end_quote
or al,al
jz missing_end_quote
cmp al,1Ah
je missing_end_quote
cmp al,ah
jne copy_string
lods byte [esi]
cmp al,ah
je copy_string
dec esi
dec edi
mov eax,edi
sub eax,ebx
mov [ebx-4],eax
jmp convert_line_data
backslash_character:
mov byte [edi],0
lods byte [esi]
cmp al,20h
je concatenate_lines
cmp al,9
je concatenate_lines
cmp al,1Ah
je unexpected_end_of_file
cmp al,0Ah
je concatenate_lf
cmp al,0Dh
je concatenate_cr
cmp al,3Bh
je find_concatenated_line
mov al,1Ah
stos byte [edi]
mov ecx,edi
mov ax,5C01h
stos word [edi]
dec esi
group_backslashes:
lods byte [esi]
cmp al,5Ch
jne backslashed_symbol
stos byte [edi]
inc byte [ecx]
jmp group_backslashes
backslashed_symbol:
cmp al,1Ah
je unexpected_end_of_file
cmp al,0Ah
je extra_characters_on_line
cmp al,0Dh
je extra_characters_on_line
cmp al,20h
je extra_characters_on_line
cmp al,9
je extra_characters_on_line
cmp al,22h
je extra_characters_on_line
cmp al,27h
je extra_characters_on_line
cmp al,3Bh
je extra_characters_on_line
mov ah,al
mov ebx,characters
xlat byte [ebx]
or al,al
jz backslashed_symbol_character
mov al,ah
convert_backslashed_symbol:
stos byte [edi]
xlat byte [ebx]
or al,al
jz found_separator
inc byte [ecx]
jz name_too_long
lods byte [esi]
jmp convert_backslashed_symbol
backslashed_symbol_character:
mov al,ah
stos byte [edi]
inc byte [ecx]
jmp convert_line_data
concatenate_lines:
lods byte [esi]
cmp al,20h
je concatenate_lines
cmp al,9
je concatenate_lines
cmp al,1Ah
je unexpected_end_of_file
cmp al,0Ah
je concatenate_lf
cmp al,0Dh
je concatenate_cr
cmp al,3Bh
jne extra_characters_on_line
find_concatenated_line:
lods byte [esi]
cmp al,0Ah
je concatenate_lf
cmp al,0Dh
je concatenate_cr
or al,al
jz concatenate_ok
cmp al,1Ah
jne find_concatenated_line
jmp unexpected_end_of_file
concatenate_lf:
lods byte [esi]
cmp al,0Dh
je concatenate_ok
dec esi
jmp concatenate_ok
concatenate_cr:
lods byte [esi]
cmp al,0Ah
je concatenate_ok
dec esi
concatenate_ok:
inc dword [esp]
jmp convert_line_data
ignore_comment:
lods byte [esi]
cmp al,0Ah
je lf_character
cmp al,0Dh
je cr_character
or al,al
jz line_end
cmp al,1Ah
jne ignore_comment
line_end:
xor al,al
stos byte [edi]
pop ecx
ret
lower_case:
mov edi,converted
mov ebx,characters
convert_case:
lods byte [esi]
xlat byte [ebx]
stos byte [edi]
loop convert_case
case_ok:
ret
get_directive:
push edi
mov edx,esi
mov ebp,ecx
call lower_case
pop edi
scan_directives:
mov esi,converted
movzx eax,byte [edi]
or al,al
jz no_directive
mov ecx,ebp
inc edi
mov ebx,edi
add ebx,eax
mov ah,[esi]
cmp ah,[edi]
jb no_directive
ja next_directive
cmp cl,al
jne next_directive
repe cmps byte [esi],[edi]
jb no_directive
je directive_ok
next_directive:
mov edi,ebx
add edi,2
jmp scan_directives
no_directive:
mov esi,edx
mov ecx,ebp
stc
ret
directive_ok:
lea esi,[edx+ebp]
movzx eax,word [ebx]
add eax,preprocessor
clc
ret
preprocess_line:
mov eax,esp
sub eax,100h
jc stack_overflow
cmp eax,[stack_limit]
jb stack_overflow
push ecx esi
preprocess_current_line:
mov esi,[current_line]
add esi,16
cmp word [esi],3Bh
jne line_start_ok
add esi,2
line_start_ok:
test [macro_status],0F0h
jnz macro_preprocessing
cmp byte [esi],1Ah
jne not_fix_constant
movzx edx,byte [esi+1]
lea edx,[esi+2+edx]
cmp word [edx],031Ah
jne not_fix_constant
mov ebx,characters
movzx eax,byte [edx+2]
xlat byte [ebx]
ror eax,8
mov al,[edx+3]
xlat byte [ebx]
ror eax,8
mov al,[edx+4]
xlat byte [ebx]
ror eax,16
cmp eax,'fix'
je define_fix_constant
not_fix_constant:
call process_fix_constants
jmp initial_preprocessing_ok
macro_preprocessing:
call process_macro_operators
initial_preprocessing_ok:
mov esi,[current_line]
add esi,16
mov al,[macro_status]
test al,2
jnz skip_macro_block
test al,1
jnz find_macro_block
preprocess_instruction:
mov [current_offset],esi
lods byte [esi]
movzx ecx,byte [esi]
inc esi
cmp al,1Ah
jne not_preprocessor_symbol
cmp cl,3
jb not_preprocessor_directive
push edi
mov edi,preprocessor_directives
call get_directive
pop edi
jc not_preprocessor_directive
mov byte [edx-2],3Bh
jmp near eax
not_preprocessor_directive:
xor ch,ch
call get_preprocessor_symbol
jc not_macro
mov byte [ebx-2],3Bh
mov [struc_name],0
jmp use_macro
not_macro:
mov [struc_name],esi
add esi,ecx
lods byte [esi]
cmp al,':'
je preprocess_label
cmp al,1Ah
jne not_preprocessor_symbol
lods byte [esi]
cmp al,3
jne not_symbolic_constant
mov ebx,characters
movzx eax,byte [esi]
xlat byte [ebx]
ror eax,8
mov al,[esi+1]
xlat byte [ebx]
ror eax,8
mov al,[esi+2]
xlat byte [ebx]
ror eax,16
cmp eax,'equ'
je define_equ_constant
mov al,3
not_symbolic_constant:
mov ch,1
mov cl,al
call get_preprocessor_symbol
jc not_preprocessor_symbol
push edx esi
mov esi,[struc_name]
mov [struc_label],esi
sub [struc_label],2
mov cl,[esi-1]
mov ch,10b
call get_preprocessor_symbol
jc struc_name_ok
mov ecx,[edx+12]
add ecx,3
lea ebx,[edi+ecx]
mov ecx,edi
sub ecx,[struc_label]
lea esi,[edi-1]
lea edi,[ebx-1]
std
rep movs byte [edi],[esi]
cld
mov edi,[struc_label]
mov esi,[edx+8]
mov ecx,[edx+12]
add [struc_name],ecx
add [struc_name],3
call move_data
mov al,3Ah
stos byte [edi]
mov ax,3Bh
stos word [edi]
mov edi,ebx
pop esi
add esi,[edx+12]
add esi,3
pop edx
jmp use_macro
struc_name_ok:
mov edx,[struc_name]
movzx eax,byte [edx-1]
add edx,eax
mov al,3Ah
mov [edx],al
inc al
xchg al,[edx+1]
dec al
mov [edx+2],al
pop esi edx
jmp use_macro
preprocess_label:
dec esi
sub esi,ecx
lea ebp,[esi-2]
mov ch,10b
call get_preprocessor_symbol
jnc symbolic_constant_in_label
lea esi,[esi+ecx+1]
jmp preprocess_instruction
symbolic_constant_in_label:
mov ebx,[edx+8]
mov ecx,[edx+12]
add ecx,ebx
check_for_broken_label:
cmp ebx,ecx
je label_broken
cmp byte [ebx],1Ah
jne label_broken
movzx eax,byte [ebx+1]
lea ebx,[ebx+2+eax]
cmp ebx,ecx
je label_constant_ok
cmp byte [ebx],':'
jne label_broken
inc ebx
jmp check_for_broken_label
label_broken:
push line_preprocessed
jmp replace_symbolic_constant
label_constant_ok:
mov ecx,edi
sub ecx,esi
mov edi,[edx+12]
add edi,ebp
push edi
lea eax,[edi+ecx]
push eax
cmp esi,edi
je replace_label
jb move_rest_of_line_up
rep movs byte [edi],[esi]
jmp replace_label
move_rest_of_line_up:
lea esi,[esi+ecx-1]
lea edi,[edi+ecx-1]
std
rep movs byte [edi],[esi]
cld
replace_label:
mov ecx,[edx+12]
mov edi,[esp+4]
sub edi,ecx
mov esi,[edx+8]
rep movs byte [edi],[esi]
pop edi esi
inc esi
jmp preprocess_instruction
not_preprocessor_symbol:
mov esi,[current_offset]
call process_equ_constants
line_preprocessed:
pop esi ecx
ret
get_preprocessor_symbol:
push ebp edi esi
mov ebp,ecx
shl ebp,22
movzx ecx,cl
mov ebx,hash_tree
mov edi,10
follow_hashes_roots:
mov edx,[ebx]
or edx,edx
jz preprocessor_symbol_not_found
xor eax,eax
shl ebp,1
adc eax,0
lea ebx,[edx+eax*4]
dec edi
jnz follow_hashes_roots
mov edi,ebx
call calculate_hash
mov ebp,eax
and ebp,3FFh
shl ebp,10
xor ebp,eax
mov ebx,edi
mov edi,22
follow_hashes_tree:
mov edx,[ebx]
or edx,edx
jz preprocessor_symbol_not_found
xor eax,eax
shl ebp,1
adc eax,0
lea ebx,[edx+eax*4]
dec edi
jnz follow_hashes_tree
mov al,cl
mov edx,[ebx]
or edx,edx
jz preprocessor_symbol_not_found
compare_with_preprocessor_symbol:
mov edi,[edx+4]
cmp edi,1
jbe next_equal_hash
repe cmps byte [esi],[edi]
je preprocessor_symbol_found
mov cl,al
mov esi,[esp]
next_equal_hash:
mov edx,[edx]
or edx,edx
jnz compare_with_preprocessor_symbol
preprocessor_symbol_not_found:
pop esi edi ebp
stc
ret
preprocessor_symbol_found:
pop ebx edi ebp
clc
ret
calculate_hash:
xor ebx,ebx
mov eax,2166136261
mov ebp,16777619
fnv1a_hash:
xor al,[esi+ebx]
mul ebp
inc bl
cmp bl,cl
jb fnv1a_hash
ret
add_preprocessor_symbol:
push edi esi
mov edi,preprocessor_directives
call get_directive
jnc reserved_word_used_as_symbol
call calculate_hash
mov ebp,eax
and ebp,3FFh
shr eax,10
xor ebp,eax
shl ecx,22
or ebp,ecx
mov ebx,hash_tree
mov ecx,32
find_leave_for_symbol:
mov edx,[ebx]
or edx,edx
jz extend_hashes_tree
xor eax,eax
rol ebp,1
adc eax,0
lea ebx,[edx+eax*4]
dec ecx
jnz find_leave_for_symbol
mov edx,[ebx]
or edx,edx
jz add_symbol_entry
shr ebp,30
cmp ebp,11b
je reuse_symbol_entry
cmp dword [edx+4],0
jne add_symbol_entry
find_entry_to_reuse:
mov edi,[edx]
or edi,edi
jz reuse_symbol_entry
cmp dword [edi+4],0
jne reuse_symbol_entry
mov edx,edi
jmp find_entry_to_reuse
add_symbol_entry:
mov eax,edx
mov edx,[labels_list]
sub edx,16
cmp edx,[free_additional_memory]
jb out_of_memory
mov [labels_list],edx
mov [edx],eax
mov [ebx],edx
reuse_symbol_entry:
pop esi edi
mov [edx+4],esi
ret
extend_hashes_tree:
mov edx,[labels_list]
sub edx,8
cmp edx,[free_additional_memory]
jb out_of_memory
mov [labels_list],edx
xor eax,eax
mov [edx],eax
mov [edx+4],eax
shl ebp,1
adc eax,0
mov [ebx],edx
lea ebx,[edx+eax*4]
dec ecx
jnz extend_hashes_tree
mov edx,[labels_list]
sub edx,16
cmp edx,[free_additional_memory]
jb out_of_memory
mov [labels_list],edx
mov dword [edx],0
mov [ebx],edx
pop esi edi
mov [edx+4],esi
ret
define_fix_constant:
add edx,5
add esi,2
push edx esi
mov esi,edx
call skip_parameters
xchg esi,[esp]
mov ch,11b
jmp define_preprocessor_constant
define_equ_constant:
add esi,3
push esi
call process_equ_constants
push esi
mov esi,[struc_name]
mov ch,10b
define_preprocessor_constant:
mov byte [esi-2],3Bh
mov cl,[esi-1]
call add_preprocessor_symbol
pop esi ebx
mov ecx,edi
dec ecx
sub ecx,ebx
mov [edx+8],ebx
mov [edx+12],ecx
jmp line_preprocessed
define_symbolic_constant:
lods byte [esi]
cmp al,1Ah
jne invalid_name
lods byte [esi]
mov cl,al
mov ch,10b
call add_preprocessor_symbol
movzx eax,byte [esi-1]
add esi,eax
push esi edx
call skip_parameters
pop edx ebx
lea ecx,[esi-1]
sub ecx,ebx
mov [edx+8],ebx
mov [edx+12],ecx
jmp line_preprocessed
skip_parameters:
lods byte [esi]
or al,al
jz parameters_skipped
cmp al,'{'
je parameters_skipped
cmp al,22h
je skip_quoted_parameter
cmp al,1Ah
jne skip_parameters
lods byte [esi]
movzx eax,al
add esi,eax
jmp skip_parameters
skip_quoted_parameter:
lods dword [esi]
add esi,eax
jmp skip_parameters
parameters_skipped:
ret
define_struc:
mov ch,1
jmp make_macro
define_macro:
xor ch,ch
make_macro:
lods byte [esi]
cmp al,1Ah
jne invalid_name
lods byte [esi]
mov cl,al
call add_preprocessor_symbol
mov eax,[current_line]
mov [edx+12],eax
movzx eax,byte [esi-1]
add esi,eax
mov [edx+8],esi
mov al,[macro_status]
and al,0F0h
or al,1
mov [macro_status],al
mov eax,[current_line]
mov [error_line],eax
xor bl,bl
lods byte [esi]
or al,al
jz line_preprocessed
cmp al,'{'
je found_macro_block
dec esi
skip_macro_arguments:
lods byte [esi]
cmp al,1Ah
je skip_macro_argument
cmp al,'['
jne invalid_macro_arguments
xor bl,-1
jz invalid_macro_arguments
lods byte [esi]
cmp al,1Ah
jne invalid_macro_arguments
skip_macro_argument:
movzx eax,byte [esi]
inc esi
add esi,eax
lods byte [esi]
cmp al,'*'
jne macro_argument_end
lods byte [esi]
macro_argument_end:
cmp al,','
je skip_macro_arguments
cmp al,']'
jne end_macro_arguments
lods byte [esi]
not bl
end_macro_arguments:
or bl,bl
jnz invalid_macro_arguments
or al,al
jz line_preprocessed
cmp al,'{'
je found_macro_block
jmp invalid_macro_arguments
find_macro_block:
add esi,2
lods byte [esi]
or al,al
jz line_preprocessed
cmp al,'{'
jne unexpected_characters
found_macro_block:
or [macro_status],2
skip_macro_block:
lods byte [esi]
cmp al,1Ah
je skip_macro_symbol
cmp al,3Bh
je skip_macro_symbol
cmp al,22h
je skip_macro_string
or al,al
jz line_preprocessed
cmp al,'}'
jne skip_macro_block
mov al,[macro_status]
and [macro_status],0F0h
test al,8
jnz use_instant_macro
cmp byte [esi],0
je line_preprocessed
mov ecx,edi
sub ecx,esi
mov edx,esi
lea esi,[esi+ecx-1]
lea edi,[edi+1+16]
mov ebx,edi
dec edi
std
rep movs byte [edi],[esi]
cld
mov edi,edx
xor al,al
stos byte [edi]
mov esi,[current_line]
mov [current_line],edi
mov ecx,4
rep movs dword [edi],[esi]
mov edi,ebx
jmp initial_preprocessing_ok
skip_macro_symbol:
movzx eax,byte [esi]
inc esi
add esi,eax
jmp skip_macro_block
skip_macro_string:
lods dword [esi]
add esi,eax
jmp skip_macro_block
rept_directive:
mov [base_code],0
jmp define_instant_macro
irp_directive:
mov [base_code],1
jmp define_instant_macro
irps_directive:
mov [base_code],2
jmp define_instant_macro
match_directive:
mov [base_code],10h
define_instant_macro:
mov al,[macro_status]
and al,0F0h
or al,8+1
mov [macro_status],al
mov eax,[current_line]
mov [error_line],eax
mov [instant_macro_start],esi
cmp [base_code],10h
je prepare_match
call skip_parameters
instant_macro_parameters_skipped:
dec esi
mov [parameters_end],esi
lods byte [esi]
cmp al,'{'
je found_macro_block
or al,al
jnz invalid_macro_arguments
jmp line_preprocessed
prepare_match:
call skip_pattern
mov [value_type],80h+10b
call process_symbolic_constants
jmp instant_macro_parameters_skipped
skip_pattern:
lods byte [esi]
or al,al
jz invalid_macro_arguments
cmp al,','
je pattern_skipped
cmp al,22h
je skip_quoted_string_in_pattern
cmp al,1Ah
je skip_symbol_in_pattern
cmp al,'='
jne skip_pattern
mov al,[esi]
cmp al,1Ah
je skip_pattern
cmp al,22h
je skip_pattern
inc esi
jmp skip_pattern
skip_symbol_in_pattern:
lods byte [esi]
movzx eax,al
add esi,eax
jmp skip_pattern
skip_quoted_string_in_pattern:
lods dword [esi]
add esi,eax
jmp skip_pattern
pattern_skipped:
ret
purge_macro:
xor ch,ch
jmp restore_preprocessor_symbol
purge_struc:
mov ch,1
jmp restore_preprocessor_symbol
restore_equ_constant:
mov ch,10b
restore_preprocessor_symbol:
push ecx
lods byte [esi]
cmp al,1Ah
jne invalid_name
lods byte [esi]
mov cl,al
call get_preprocessor_symbol
jc no_symbol_to_restore
mov dword [edx+4],0
jmp symbol_restored
no_symbol_to_restore:
add esi,ecx
symbol_restored:
pop ecx
lods byte [esi]
cmp al,','
je restore_preprocessor_symbol
or al,al
jnz extra_characters_on_line
jmp line_preprocessed
process_fix_constants:
mov [value_type],11b
jmp process_symbolic_constants
process_equ_constants:
mov [value_type],10b
process_symbolic_constants:
mov ebp,esi
lods byte [esi]
cmp al,1Ah
je check_symbol
cmp al,22h
je ignore_string
cmp al,'{'
je check_brace
or al,al
jnz process_symbolic_constants
ret
ignore_string:
lods dword [esi]
add esi,eax
jmp process_symbolic_constants
check_brace:
test [value_type],80h
jz process_symbolic_constants
ret
no_replacing:
movzx ecx,byte [esi-1]
add esi,ecx
jmp process_symbolic_constants
check_symbol:
mov cl,[esi]
inc esi
mov ch,[value_type]
call get_preprocessor_symbol
jc no_replacing
mov [current_section],edi
replace_symbolic_constant:
mov ecx,[edx+12]
mov edx,[edx+8]
xchg esi,edx
call move_data
mov esi,edx
process_after_replaced:
lods byte [esi]
cmp al,1Ah
je symbol_after_replaced
stos byte [edi]
cmp al,22h
je string_after_replaced
cmp al,'{'
je brace_after_replaced
or al,al
jnz process_after_replaced
mov ecx,edi
sub ecx,esi
mov edi,ebp
call move_data
mov esi,edi
ret
move_data:
lea eax,[edi+ecx]
cmp eax,[memory_end]
jae out_of_memory
shr ecx,1
jnc movsb_ok
movs byte [edi],[esi]
movsb_ok:
shr ecx,1
jnc movsw_ok
movs word [edi],[esi]
movsw_ok:
rep movs dword [edi],[esi]
ret
string_after_replaced:
lods dword [esi]
stos dword [edi]
mov ecx,eax
call move_data
jmp process_after_replaced
brace_after_replaced:
test [value_type],80h
jz process_after_replaced
mov edx,edi
mov ecx,[current_section]
sub edx,ecx
sub ecx,esi
rep movs byte [edi],[esi]
mov ecx,edi
sub ecx,esi
mov edi,ebp
call move_data
lea esi,[ebp+edx]
ret
symbol_after_replaced:
mov cl,[esi]
inc esi
mov ch,[value_type]
call get_preprocessor_symbol
jnc replace_symbolic_constant
movzx ecx,byte [esi-1]
mov al,1Ah
mov ah,cl
stos word [edi]
call move_data
jmp process_after_replaced
process_macro_operators:
xor dl,dl
mov ebp,edi
before_macro_operators:
mov edi,esi
lods byte [esi]
cmp al,'`'
je symbol_conversion
cmp al,'#'
je concatenation
cmp al,1Ah
je symbol_before_macro_operators
cmp al,3Bh
je no_more_macro_operators
cmp al,22h
je string_before_macro_operators
xor dl,dl
or al,al
jnz before_macro_operators
mov edi,esi
ret
no_more_macro_operators:
mov edi,ebp
ret
symbol_before_macro_operators:
mov dl,1Ah
mov ebx,esi
lods byte [esi]
movzx ecx,al
jecxz symbol_before_macro_operators_ok
mov edi,esi
cmp byte [esi],'\'
je escaped_symbol
symbol_before_macro_operators_ok:
add esi,ecx
jmp before_macro_operators
string_before_macro_operators:
mov dl,22h
mov ebx,esi
lods dword [esi]
add esi,eax
jmp before_macro_operators
escaped_symbol:
dec byte [edi-1]
dec ecx
inc esi
cmp ecx,1
rep movs byte [edi],[esi]
jne after_macro_operators
mov al,[esi-1]
mov ecx,ebx
mov ebx,characters
xlat byte [ebx]
mov ebx,ecx
or al,al
jnz after_macro_operators
sub edi,3
mov al,[esi-1]
stos byte [edi]
xor dl,dl
jmp after_macro_operators
reduce_symbol_conversion:
inc esi
symbol_conversion:
mov edx,esi
mov al,[esi]
cmp al,1Ah
jne symbol_character_conversion
lods word [esi]
movzx ecx,ah
lea ebx,[edi+3]
jecxz convert_to_quoted_string
cmp byte [esi],'\'
jne convert_to_quoted_string
inc esi
dec ecx
dec ebx
jmp convert_to_quoted_string
symbol_character_conversion:
cmp al,22h
je after_macro_operators
cmp al,'`'
je reduce_symbol_conversion
lea ebx,[edi+5]
xor ecx,ecx
or al,al
jz convert_to_quoted_string
cmp al,'#'
je convert_to_quoted_string
inc ecx
convert_to_quoted_string:
sub ebx,edx
ja shift_line_data
mov al,22h
mov dl,al
stos byte [edi]
mov ebx,edi
mov eax,ecx
stos dword [edi]
rep movs byte [edi],[esi]
cmp edi,esi
je before_macro_operators
jmp after_macro_operators
shift_line_data:
push ecx
mov edx,esi
lea esi,[ebp-1]
add ebp,ebx
lea edi,[ebp-1]
lea ecx,[esi+1]
sub ecx,edx
std
rep movs byte [edi],[esi]
cld
pop eax
sub edi,3
mov dl,22h
mov [edi-1],dl
mov ebx,edi
mov [edi],eax
lea esi,[edi+4+eax]
jmp before_macro_operators
concatenation:
cmp dl,1Ah
je symbol_concatenation
cmp dl,22h
je string_concatenation
no_concatenation:
cmp esi,edi
je before_macro_operators
jmp after_macro_operators
symbol_concatenation:
cmp byte [esi],1Ah
jne no_concatenation
inc esi
lods byte [esi]
movzx ecx,al
jecxz do_symbol_concatenation
cmp byte [esi],'\'
je concatenate_escaped_symbol
do_symbol_concatenation:
add [ebx],cl
jc name_too_long
rep movs byte [edi],[esi]
jmp after_macro_operators
concatenate_escaped_symbol:
inc esi
dec ecx
jz do_symbol_concatenation
movzx eax,byte [esi]
cmp byte [characters+eax],0
jne do_symbol_concatenation
sub esi,3
jmp no_concatenation
string_concatenation:
cmp byte [esi],22h
je do_string_concatenation
cmp byte [esi],'`'
jne no_concatenation
concatenate_converted_symbol:
inc esi
mov al,[esi]
cmp al,'`'
je concatenate_converted_symbol
cmp al,22h
je do_string_concatenation
cmp al,1Ah
jne concatenate_converted_symbol_character
inc esi
lods byte [esi]
movzx ecx,al
jecxz finish_concatenating_converted_symbol
cmp byte [esi],'\'
jne finish_concatenating_converted_symbol
inc esi
dec ecx
finish_concatenating_converted_symbol:
add [ebx],ecx
rep movs byte [edi],[esi]
jmp after_macro_operators
concatenate_converted_symbol_character:
or al,al
jz after_macro_operators
cmp al,'#'
je after_macro_operators
inc dword [ebx]
movs byte [edi],[esi]
jmp after_macro_operators
do_string_concatenation:
inc esi
lods dword [esi]
mov ecx,eax
add [ebx],eax
rep movs byte [edi],[esi]
after_macro_operators:
lods byte [esi]
cmp al,'`'
je symbol_conversion
cmp al,'#'
je concatenation
stos byte [edi]
cmp al,1Ah
je symbol_after_macro_operators
cmp al,3Bh
je no_more_macro_operators
cmp al,22h
je string_after_macro_operators
xor dl,dl
or al,al
jnz after_macro_operators
ret
symbol_after_macro_operators:
mov dl,1Ah
mov ebx,edi
lods byte [esi]
stos byte [edi]
movzx ecx,al
jecxz symbol_after_macro_operatorss_ok
cmp byte [esi],'\'
je escaped_symbol
symbol_after_macro_operatorss_ok:
rep movs byte [edi],[esi]
jmp after_macro_operators
string_after_macro_operators:
mov dl,22h
mov ebx,edi
lods dword [esi]
stos dword [edi]
mov ecx,eax
rep movs byte [edi],[esi]
jmp after_macro_operators
use_macro:
push [free_additional_memory]
push [macro_symbols]
mov [macro_symbols],0
push [counter_limit]
push dword [edx+4]
mov dword [edx+4],1
push edx
mov ebx,esi
mov esi,[edx+8]
mov eax,[edx+12]
mov [macro_line],eax
mov [counter_limit],0
process_macro_arguments:
mov al,[esi]
or al,al
jz arguments_end
cmp al,'{'
je arguments_end
inc esi
cmp al,'['
jne get_macro_arguments
mov ebp,esi
inc esi
inc [counter_limit]
get_macro_arguments:
call get_macro_argument
lods byte [esi]
cmp al,','
je next_argument
cmp al,']'
je next_arguments_group
dec esi
jmp arguments_end
next_argument:
cmp byte [ebx],','
jne process_macro_arguments
inc ebx
jmp process_macro_arguments
next_arguments_group:
cmp byte [ebx],','
jne arguments_end
inc ebx
inc [counter_limit]
mov esi,ebp
jmp process_macro_arguments
get_macro_argument:
lods byte [esi]
movzx ecx,al
mov eax,[counter_limit]
call add_macro_symbol
add esi,ecx
xchg esi,ebx
mov [edx+12],esi
cmp byte [esi],'<'
jne simple_argument
inc esi
mov [edx+12],esi
mov ecx,1
enclosed_argument:
lods byte [esi]
or al,al
jz invalid_macro_arguments
cmp al,1Ah
je enclosed_symbol
cmp al,22h
je enclosed_string
cmp al,'>'
je enclosed_argument_end
cmp al,'<'
jne enclosed_argument
inc ecx
jmp enclosed_argument
enclosed_symbol:
movzx eax,byte [esi]
inc esi
add esi,eax
jmp enclosed_argument
enclosed_string:
lods dword [esi]
add esi,eax
jmp enclosed_argument
enclosed_argument_end:
loop enclosed_argument
mov al,[esi]
or al,al
jz enclosed_argument_ok
cmp al,','
jne invalid_macro_arguments
enclosed_argument_ok:
mov eax,esi
sub eax,[edx+12]
dec eax
or eax,80000000h
mov [edx+8],eax
jmp argument_value_ok
simple_argument:
lods byte [esi]
or al,al
jz argument_value_end
cmp al,','
je argument_value_end
cmp al,22h
je argument_string
cmp al,1Ah
jne simple_argument
movzx eax,byte [esi]
inc esi
add esi,eax
jmp simple_argument
argument_string:
lods dword [esi]
add esi,eax
jmp simple_argument
argument_value_end:
dec esi
mov eax,esi
sub eax,[edx+12]
mov [edx+8],eax
argument_value_ok:
xchg esi,ebx
cmp byte [esi],'*'
jne macro_argument_ok
cmp dword [edx+8],0
je invalid_macro_arguments
inc esi
macro_argument_ok:
ret
arguments_end:
cmp byte [ebx],0
jne invalid_macro_arguments
mov eax,[esp+4]
dec eax
call process_macro
pop edx
pop dword [edx+4]
pop [counter_limit]
pop [macro_symbols]
pop [free_additional_memory]
jmp line_preprocessed
use_instant_macro:
push edi [current_line] esi
mov eax,[error_line]
mov [current_line],eax
mov [macro_line],eax
mov esi,[instant_macro_start]
cmp [base_code],10h
jae do_match
cmp [base_code],0
jne do_irp
call get_number
jc invalid_value
or ebp,ebp
jnz invalid_value
cmp dword [edi+4],0
jne value_out_of_range
mov eax,[edi]
cmp eax,80000000h
jae value_out_of_range
push [free_additional_memory]
push [macro_symbols]
mov [macro_symbols],0
push [counter_limit]
mov [struc_name],0
mov [counter_limit],eax
lods byte [esi]
or al,al
jz rept_counters_ok
cmp al,'{'
je rept_counters_ok
cmp al,1Ah
jne invalid_macro_arguments
add_rept_counter:
lods byte [esi]
movzx ecx,al
xor eax,eax
call add_macro_symbol
add esi,ecx
xor eax,eax
mov dword [edx+12],eax
inc eax
mov dword [edx+8],eax
lods byte [esi]
cmp al,':'
jne rept_counter_added
push edx
call get_number
jc invalid_value
or ebp,ebp
jnz invalid_value
cmp dword [edi+4],0
jne value_out_of_range
mov eax,[edi]
mov edx,eax
add edx,[counter_limit]
jc value_out_of_range
pop edx
mov dword [edx+8],eax
lods byte [esi]
rept_counter_added:
cmp al,','
jne rept_counters_ok
lods byte [esi]
cmp al,1Ah
jne invalid_macro_arguments
jmp add_rept_counter
rept_counters_ok:
dec esi
cmp [counter_limit],0
je instant_macro_finish
instant_macro_parameters_ok:
xor eax,eax
call process_macro
instant_macro_finish:
pop [counter_limit]
pop [macro_symbols]
pop [free_additional_memory]
instant_macro_done:
pop ebx esi edx
cmp byte [ebx],0
je line_preprocessed
mov [current_line],edi
mov ecx,4
rep movs dword [edi],[esi]
test [macro_status],0Fh
jz instant_macro_attached_line
mov ax,3Bh
stos word [edi]
instant_macro_attached_line:
mov esi,ebx
sub edx,ebx
mov ecx,edx
call move_data
jmp initial_preprocessing_ok
do_irp:
cmp byte [esi],1Ah
jne invalid_macro_arguments
movzx eax,byte [esi+1]
lea esi,[esi+2+eax]
lods byte [esi]
cmp [base_code],1
ja irps_name_ok
cmp al,'*'
jne irp_name_ok
lods byte [esi]
irp_name_ok:
cmp al,','
jne invalid_macro_arguments
jmp irp_parameters_start
irps_name_ok:
cmp al,','
jne invalid_macro_arguments
mov al,[esi]
or al,al
jz instant_macro_done
cmp al,'{'
je instant_macro_done
irp_parameters_start:
xor eax,eax
push [free_additional_memory]
push [macro_symbols]
mov [macro_symbols],eax
push [counter_limit]
mov [counter_limit],eax
mov [struc_name],eax
mov ebx,esi
cmp [base_code],1
ja get_irps_parameter
mov edx,[parameters_end]
mov al,[edx]
push eax
mov byte [edx],0
get_irp_parameter:
inc [counter_limit]
mov esi,[instant_macro_start]
inc esi
call get_macro_argument
cmp byte [ebx],','
jne irp_parameters_end
inc ebx
jmp get_irp_parameter
irp_parameters_end:
mov esi,ebx
pop eax
mov [esi],al
jmp instant_macro_parameters_ok
get_irps_parameter:
mov esi,[instant_macro_start]
inc esi
lods byte [esi]
movzx ecx,al
inc [counter_limit]
mov eax,[counter_limit]
call add_macro_symbol
mov [edx+12],ebx
cmp byte [ebx],1Ah
je irps_symbol
cmp byte [ebx],22h
je irps_quoted_string
mov eax,1
jmp irps_parameter_ok
irps_quoted_string:
mov eax,[ebx+1]
add eax,1+4
jmp irps_parameter_ok
irps_symbol:
movzx eax,byte [ebx+1]
add eax,1+1
irps_parameter_ok:
mov [edx+8],eax
add ebx,eax
cmp byte [ebx],0
je irps_parameters_end
cmp byte [ebx],'{'
jne get_irps_parameter
irps_parameters_end:
mov esi,ebx
jmp instant_macro_parameters_ok
do_match:
mov ebx,esi
call skip_pattern
call exact_match
mov edx,edi
mov al,[ebx]
cmp al,1Ah
je free_match
cmp al,','
jne instant_macro_done
cmp esi,[parameters_end]
je matched_pattern
jmp instant_macro_done
free_match:
add edx,12
cmp edx,[memory_end]
ja out_of_memory
mov [edx-12],ebx
mov [edx-8],esi
call skip_match_element
jc try_different_matching
mov [edx-4],esi
movzx eax,byte [ebx+1]
lea ebx,[ebx+2+eax]
cmp byte [ebx],1Ah
je free_match
find_exact_match:
call exact_match
cmp esi,[parameters_end]
je end_matching
cmp byte [ebx],1Ah
je free_match
mov ebx,[edx-12]
movzx eax,byte [ebx+1]
lea ebx,[ebx+2+eax]
mov esi,[edx-4]
jmp match_more_elements
try_different_matching:
sub edx,12
cmp edx,edi
je instant_macro_done
mov ebx,[edx-12]
movzx eax,byte [ebx+1]
lea ebx,[ebx+2+eax]
cmp byte [ebx],1Ah
je try_different_matching
mov esi,[edx-4]
match_more_elements:
call skip_match_element
jc try_different_matching
mov [edx-4],esi
jmp find_exact_match
skip_match_element:
cmp esi,[parameters_end]
je cannot_match
mov al,[esi]
cmp al,1Ah
je skip_match_symbol
cmp al,22h
je skip_match_quoted_string
add esi,1
ret
skip_match_quoted_string:
mov eax,[esi+1]
add esi,5
jmp skip_match_ok
skip_match_symbol:
movzx eax,byte [esi+1]
add esi,2
skip_match_ok:
add esi,eax
ret
cannot_match:
stc
ret
exact_match:
cmp esi,[parameters_end]
je exact_match_complete
mov ah,[esi]
mov al,[ebx]
cmp al,','
je exact_match_complete
cmp al,1Ah
je exact_match_complete
cmp al,'='
je match_verbatim
call match_elements
je exact_match
exact_match_complete:
ret
match_verbatim:
inc ebx
call match_elements
je exact_match
dec ebx
ret
match_elements:
mov al,[ebx]
cmp al,1Ah
je match_symbols
cmp al,22h
je match_quoted_strings
cmp al,ah
je symbol_characters_matched
ret
symbol_characters_matched:
lea ebx,[ebx+1]
lea esi,[esi+1]
ret
match_quoted_strings:
mov ecx,[ebx+1]
add ecx,5
jmp compare_elements
match_symbols:
movzx ecx,byte [ebx+1]
add ecx,2
compare_elements:
mov eax,esi
mov ebp,edi
mov edi,ebx
repe cmps byte [esi],[edi]
jne elements_mismatch
mov ebx,edi
mov edi,ebp
ret
elements_mismatch:
mov esi,eax
mov edi,ebp
ret
end_matching:
cmp byte [ebx],','
jne instant_macro_done
matched_pattern:
xor eax,eax
push [free_additional_memory]
push [macro_symbols]
mov [macro_symbols],eax
push [counter_limit]
mov [counter_limit],eax
mov [struc_name],eax
push esi edi edx
add_matched_symbol:
cmp edi,[esp]
je matched_symbols_ok
mov esi,[edi]
inc esi
lods byte [esi]
movzx ecx,al
xor eax,eax
call add_macro_symbol
mov eax,[edi+4]
mov dword [edx+12],eax
mov ecx,[edi+8]
sub ecx,eax
mov dword [edx+8],ecx
add edi,12
jmp add_matched_symbol
matched_symbols_ok:
pop edx edi esi
jmp instant_macro_parameters_ok
process_macro:
push dword [macro_status]
or [macro_status],10h
push [counter]
push [macro_block]
push [macro_block_line]
push [macro_block_line_number]
push [struc_label]
push [struc_name]
push eax
push [current_line]
lods byte [esi]
cmp al,'{'
je macro_instructions_start
or al,al
jnz unexpected_characters
find_macro_instructions:
mov [macro_line],esi
add esi,16+2
lods byte [esi]
or al,al
jz find_macro_instructions
cmp al,'{'
je macro_instructions_start
cmp al,3Bh
jne unexpected_characters
call skip_foreign_symbol
jmp find_macro_instructions
macro_instructions_start:
mov ecx,80000000h
mov [macro_block],esi
mov eax,[macro_line]
mov [macro_block_line],eax
mov [macro_block_line_number],ecx
xor eax,eax
mov [counter],eax
cmp [counter_limit],eax
je process_macro_line
inc [counter]
process_macro_line:
mov [current_line],edi
lea eax,[edi+10h]
cmp eax,[memory_end]
jae out_of_memory
mov eax,[esp+4]
or eax,eax
jz instant_macro_line_header
stos dword [edi]
mov eax,ecx
stos dword [edi]
mov eax,[esp]
stos dword [edi]
mov eax,[macro_line]
stos dword [edi]
jmp macro_line_header_ok
instant_macro_line_header:
mov edx,[macro_line]
mov eax,[edx]
stos dword [edi]
mov eax,[edx+4]
stos dword [edi]
mov eax,[edx+8]
stos dword [edi]
mov eax,[edx+12]
stos dword [edi]
macro_line_header_ok:
or [macro_status],20h
push ebx ecx
test [macro_status],0Fh
jz process_macro_line_element
mov ax,3Bh
stos word [edi]
process_macro_line_element:
lea eax,[edi+100h]
cmp eax,[memory_end]
jae out_of_memory
lods byte [esi]
cmp al,'}'
je macro_line_processed
or al,al
jz macro_line_processed
cmp al,1Ah
je process_macro_symbol
cmp al,3Bh
je macro_foreign_line
and [macro_status],not 20h
stos byte [edi]
cmp al,22h
jne process_macro_line_element
copy_macro_string:
mov ecx,[esi]
add ecx,4
call move_data
jmp process_macro_line_element
process_macro_symbol:
push esi edi
test [macro_status],20h
jz not_macro_directive
movzx ecx,byte [esi]
inc esi
mov edi,macro_directives
call get_directive
jnc process_macro_directive
dec esi
jmp not_macro_directive
process_macro_directive:
mov edx,eax
pop edi eax
mov byte [edi],0
inc edi
pop ecx ebx
jmp near edx
not_macro_directive:
and [macro_status],not 20h
movzx ecx,byte [esi]
inc esi
mov eax,[counter]
call get_macro_symbol
jnc group_macro_symbol
xor eax,eax
cmp [counter],eax
je multiple_macro_symbol_values
call get_macro_symbol
jc not_macro_symbol
replace_macro_symbol:
pop edi eax
mov ecx,[edx+8]
and ecx,not 80000000h
mov edx,[edx+12]
or edx,edx
jz replace_macro_counter
xchg esi,edx
call move_data
mov esi,edx
jmp process_macro_line_element
group_macro_symbol:
xor eax,eax
cmp [counter],eax
je replace_macro_symbol
push esi edx
sub esi,ecx
call get_macro_symbol
mov ebx,edx
pop edx esi
jc replace_macro_symbol
cmp edx,ebx
ja replace_macro_symbol
mov edx,ebx
jmp replace_macro_symbol
multiple_macro_symbol_values:
inc eax
push eax
call get_macro_symbol
pop eax
jc not_macro_symbol
pop edi
push ecx
mov ecx,[edx+8]
mov edx,[edx+12]
xchg esi,edx
btr ecx,31
jc enclose_macro_symbol_value
rep movs byte [edi],[esi]
jmp macro_symbol_value_ok
enclose_macro_symbol_value:
mov byte [edi],'<'
inc edi
rep movs byte [edi],[esi]
mov byte [edi],'>'
inc edi
macro_symbol_value_ok:
cmp eax,[counter_limit]
je multiple_macro_symbol_values_ok
mov byte [edi],','
inc edi
mov esi,edx
pop ecx
push edi
sub esi,ecx
jmp multiple_macro_symbol_values
multiple_macro_symbol_values_ok:
pop ecx eax
mov esi,edx
jmp process_macro_line_element
replace_macro_counter:
mov eax,[counter]
and eax,not 80000000h
jz group_macro_counter
add ecx,eax
dec ecx
call store_number_symbol
jmp process_macro_line_element
group_macro_counter:
mov edx,ecx
xor ecx,ecx
multiple_macro_counter_values:
push ecx edx
add ecx,edx
call store_number_symbol
pop edx ecx
inc ecx
cmp ecx,[counter_limit]
je process_macro_line_element
mov byte [edi],','
inc edi
jmp multiple_macro_counter_values
store_number_symbol:
mov ax,1Ah
stos word [edi]
push edi
mov eax,ecx
mov ecx,1000000000
xor edx,edx
xor bl,bl
store_number_digits:
div ecx
push edx
or bl,bl
jnz store_number_digit
cmp ecx,1
je store_number_digit
or al,al
jz number_digit_ok
not bl
store_number_digit:
add al,30h
stos byte [edi]
number_digit_ok:
mov eax,ecx
xor edx,edx
mov ecx,10
div ecx
mov ecx,eax
pop eax
or ecx,ecx
jnz store_number_digits
pop ebx
mov eax,edi
sub eax,ebx
mov [ebx-1],al
ret
not_macro_symbol:
pop edi esi
mov al,1Ah
stos byte [edi]
mov al,[esi]
inc esi
stos byte [edi]
cmp byte [esi],'.'
jne copy_raw_symbol
mov ebx,[esp+8+8]
or ebx,ebx
jz copy_raw_symbol
cmp al,1
je copy_struc_name
xchg esi,ebx
movzx ecx,byte [esi-1]
add [edi-1],cl
jc name_too_long
rep movs byte [edi],[esi]
xchg esi,ebx
copy_raw_symbol:
movzx ecx,al
rep movs byte [edi],[esi]
jmp process_macro_line_element
copy_struc_name:
inc esi
xchg esi,ebx
movzx ecx,byte [esi-1]
mov [edi-1],cl
rep movs byte [edi],[esi]
xchg esi,ebx
mov eax,[esp+8+12]
cmp byte [eax],3Bh
je process_macro_line_element
cmp byte [eax],1Ah
jne disable_replaced_struc_name
mov byte [eax],3Bh
jmp process_macro_line_element
disable_replaced_struc_name:
mov ebx,[esp+8+8]
push esi edi
lea edi,[ebx-3]
lea esi,[edi-2]
lea ecx,[esi+1]
sub ecx,eax
std
rep movs byte [edi],[esi]
cld
mov word [eax],3Bh
pop edi esi
jmp process_macro_line_element
skip_foreign_symbol:
lods byte [esi]
movzx eax,al
add esi,eax
skip_foreign_line:
lods byte [esi]
cmp al,1Ah
je skip_foreign_symbol
cmp al,3Bh
je skip_foreign_symbol
cmp al,22h
je skip_foreign_string
or al,al
jnz skip_foreign_line
ret
skip_foreign_string:
lods dword [esi]
add esi,eax
jmp skip_foreign_line
macro_foreign_line:
call skip_foreign_symbol
macro_line_processed:
mov byte [edi],0
inc edi
push eax
call preprocess_line
pop eax
pop ecx ebx
cmp al,'}'
je macro_block_processed
process_next_line:
inc ecx
mov [macro_line],esi
add esi,16+2
jmp process_macro_line
macro_block_processed:
call close_macro_block
jc process_macro_line
pop [current_line]
add esp,12
pop [macro_block_line_number]
pop [macro_block_line]
pop [macro_block]
pop [counter]
pop eax
and al,0F0h
and [macro_status],0Fh
or [macro_status],al
ret
local_symbols:
lods byte [esi]
cmp al,1Ah
jne invalid_argument
mov byte [edi-1],3Bh
xor al,al
stos byte [edi]
make_local_symbol:
push ecx
lods byte [esi]
movzx ecx,al
mov eax,[counter]
call add_macro_symbol
mov [edx+12],edi
movzx eax,[locals_counter]
add eax,ecx
inc eax
cmp eax,100h
jae name_too_long
lea ebp,[edi+2+eax]
cmp ebp,[memory_end]
jae out_of_memory
mov ah,al
mov al,1Ah
stos word [edi]
rep movs byte [edi],[esi]
mov al,'?'
stos byte [edi]
push esi
mov esi,locals_counter+1
movzx ecx,[locals_counter]
rep movs byte [edi],[esi]
pop esi
mov eax,edi
sub eax,[edx+12]
mov [edx+8],eax
xor al,al
stos byte [edi]
mov eax,locals_counter
movzx ecx,byte [eax]
counter_loop:
inc byte [eax+ecx]
cmp byte [eax+ecx],'9'+1
jb counter_ok
jne letter_digit
mov byte [eax+ecx],'A'
jmp counter_ok
letter_digit:
cmp byte [eax+ecx],'Z'+1
jb counter_ok
jne small_letter_digit
mov byte [eax+ecx],'a'
jmp counter_ok
small_letter_digit:
cmp byte [eax+ecx],'z'+1
jb counter_ok
mov byte [eax+ecx],'0'
loop counter_loop
inc byte [eax]
movzx ecx,byte [eax]
mov byte [eax+ecx],'0'
counter_ok:
pop ecx
lods byte [esi]
cmp al,'}'
je macro_block_processed
or al,al
jz process_next_line
cmp al,','
jne extra_characters_on_line
dec edi
lods byte [esi]
cmp al,1Ah
je make_local_symbol
jmp invalid_argument
common_block:
call close_macro_block
jc process_macro_line
mov [counter],0
jmp new_macro_block
forward_block:
cmp [counter_limit],0
je common_block
call close_macro_block
jc process_macro_line
mov [counter],1
jmp new_macro_block
reverse_block:
cmp [counter_limit],0
je common_block
call close_macro_block
jc process_macro_line
mov eax,[counter_limit]
or eax,80000000h
mov [counter],eax
new_macro_block:
mov [macro_block],esi
mov eax,[macro_line]
mov [macro_block_line],eax
mov [macro_block_line_number],ecx
jmp process_macro_line
close_macro_block:
cmp [counter],0
je block_closed
jl reverse_counter
mov eax,[counter]
cmp eax,[counter_limit]
je block_closed
inc [counter]
jmp continue_block
reverse_counter:
mov eax,[counter]
dec eax
cmp eax,80000000h
je block_closed
mov [counter],eax
continue_block:
mov esi,[macro_block]
mov eax,[macro_block_line]
mov [macro_line],eax
mov ecx,[macro_block_line_number]
stc
ret
block_closed:
clc
ret
get_macro_symbol:
push ecx
call find_macro_symbol_leaf
jc macro_symbol_not_found
mov edx,[ebx]
mov ebx,esi
try_macro_symbol:
or edx,edx
jz macro_symbol_not_found
mov ecx,[esp]
mov edi,[edx+4]
repe cmps byte [esi],[edi]
je macro_symbol_found
mov esi,ebx
mov edx,[edx]
jmp try_macro_symbol
macro_symbol_found:
pop ecx
clc
ret
macro_symbol_not_found:
pop ecx
stc
ret
find_macro_symbol_leaf:
shl eax,8
mov al,cl
mov ebp,eax
mov ebx,macro_symbols
follow_macro_symbols_tree:
mov edx,[ebx]
or edx,edx
jz no_such_macro_symbol
xor eax,eax
shr ebp,1
adc eax,0
lea ebx,[edx+eax*4]
or ebp,ebp
jnz follow_macro_symbols_tree
add ebx,8
clc
ret
no_such_macro_symbol:
stc
ret
add_macro_symbol:
push ebx ebp
call find_macro_symbol_leaf
jc extend_macro_symbol_tree
mov eax,[ebx]
make_macro_symbol:
mov edx,[free_additional_memory]
add edx,16
cmp edx,[labels_list]
ja out_of_memory
xchg edx,[free_additional_memory]
mov [ebx],edx
mov [edx],eax
mov [edx+4],esi
pop ebp ebx
ret
extend_macro_symbol_tree:
mov edx,[free_additional_memory]
add edx,16
cmp edx,[labels_list]
ja out_of_memory
xchg edx,[free_additional_memory]
xor eax,eax
mov [edx],eax
mov [edx+4],eax
mov [edx+8],eax
mov [edx+12],eax
shr ebp,1
adc eax,0
mov [ebx],edx
lea ebx,[edx+eax*4]
or ebp,ebp
jnz extend_macro_symbol_tree
add ebx,8
xor eax,eax
jmp make_macro_symbol
include_file:
lods byte [esi]
cmp al,22h
jne invalid_argument
lods dword [esi]
cmp byte [esi+eax],0
jne extra_characters_on_line
push esi
push edi
mov ebx,[current_line]
find_current_file_path:
mov esi,[ebx]
test byte [ebx+7],80h
jz copy_current_file_path
mov ebx,[ebx+8]
jmp find_current_file_path
copy_current_file_path:
lods byte [esi]
stos byte [edi]
or al,al
jnz copy_current_file_path
cut_current_file_name:
cmp edi,[esp]
je current_file_path_ok
cmp byte [edi-1],'\'
je current_file_path_ok
cmp byte [edi-1],'/'
je current_file_path_ok
dec edi
jmp cut_current_file_name
current_file_path_ok:
mov esi,[esp+4]
call preprocess_path
pop edx
mov esi,edx
call open
jnc include_path_ok
mov ebp,[include_paths]
try_include_directories:
mov edi,esi
mov esi,ebp
cmp byte [esi],0
je try_in_current_directory
push ebp
push edi
copy_include_directory:
lods byte [esi]
cmp al,';'
je include_directory_ok
stos byte [edi]
or al,al
jnz copy_include_directory
dec esi
dec edi
include_directory_ok:
cmp byte [edi-1],'/'
je path_separator_ok
cmp byte [edi-1],'\'
je path_separator_ok
mov al,'/'
stos byte [edi]
path_separator_ok:
mov [esp+4],esi
mov esi,[esp+8]
call preprocess_path
pop edx
mov esi,edx
call open
pop ebp
jnc include_path_ok
jmp try_include_directories
mov edi,esi
try_in_current_directory:
mov esi,[esp]
push edi
call preprocess_path
pop edx
mov esi,edx
call open
jc file_not_found
include_path_ok:
mov edi,[esp]
copy_preprocessed_path:
lods byte [esi]
stos byte [edi]
or al,al
jnz copy_preprocessed_path
pop esi
lea ecx,[edi-1]
sub ecx,esi
mov [esi-4],ecx
push dword [macro_status]
and [macro_status],0Fh
call preprocess_file
pop eax
mov [macro_status],al
jmp line_preprocessed
preprocess_path:
lods byte [esi]
cmp al,'%'
je environment_variable
stos byte [edi]
or al,al
jnz preprocess_path
cmp edi,[memory_end]
ja out_of_memory
ret
environment_variable:
mov ebx,esi
find_variable_end:
lods byte [esi]
or al,al
jz not_environment_variable
cmp al,'%'
jne find_variable_end
mov byte [esi-1],0
push esi
mov esi,ebx
call get_environment_variable
pop esi
mov byte [esi-1],'%'
jmp preprocess_path
not_environment_variable:
mov al,'%'
stos byte [edi]
mov esi,ebx
jmp preprocess_path