WebSVN – Kolibri OS – Blame – /programs/develop/fasm/trunk/assemble.inc

Rev	Author	Line No.	Line
31	halyavin	1
		2	; Copyright (c) 1999-2006, Tomasz Grysztar.
109	heavyiron	3	; All rights reserved.
31	halyavin	4
		5
		6	xor eax,eax
157	heavyiron	7	mov [stub_size],eax
		8	mov [number_of_sections],eax
		9	mov [current_pass],ax
		10	mov [resolver_flags],eax
		11	assembler_loop:
31	halyavin	12	mov eax,[labels_list]
157	heavyiron	13	mov [display_buffer],eax
		14	mov eax,[additional_memory]
		15	mov [free_additional_memory],eax
		16	mov eax,[additional_memory_end]
		17	mov [structures_buffer],eax
		18	mov esi,[source_start]
		19	mov edi,[code_start]
		20	xor eax,eax
		21	mov dword [adjustment],eax
		22	mov dword [adjustment+4],eax
		23	mov dword [org_origin],edi
		24	mov dword [org_origin+4],eax
		25	mov [org_start],edi
		26	mov [org_registers],eax
		27	mov [org_symbol],eax
		28	mov [error_line],eax
		29	mov [counter],eax
		30	mov [format_flags],eax
		31	mov [number_of_relocations],eax
		32	mov [undefined_data_end],eax
		33	mov [next_pass_needed],al
		34	mov [output_format],al
		35	mov [labels_type],al
		36	mov [virtual_data],al
		37	mov [code_type],16
		38	pass_loop:
31	halyavin	39	call assemble_line
157	heavyiron	40	jnc pass_loop
		41	mov eax,[additional_memory_end]
		42	cmp eax,[structures_buffer]
		43	je pass_done
		44	sub eax,20h
		45	mov eax,[eax+4]
		46	mov [current_line],eax
		47	jmp missing_end_directive
		48	pass_done:
31	halyavin	49	call close_pass
157	heavyiron	50	mov eax,[labels_list]
		51	check_symbols:
31	halyavin	52	cmp eax,[memory_end]
157	heavyiron	53	jae symbols_checked
		54	test byte [eax+8],8
		55	jz symbol_defined_ok
		56	mov cx,[current_pass]
		57	cmp cx,[eax+18]
		58	jne symbol_defined_ok
		59	test byte [eax+8],1
		60	jz symbol_defined_ok
		61	sub cx,[eax+16]
		62	cmp cx,1
		63	jne symbol_defined_ok
		64	and byte [eax+8],not 1
		65	or [next_pass_needed],-1
		66	symbol_defined_ok:
31	halyavin	67	test byte [eax+8],10h
157	heavyiron	68	jz use_prediction_ok
		69	mov cx,[current_pass]
		70	and byte [eax+8],not 10h
		71	test byte [eax+8],20h
		72	jnz check_use_prediction
		73	cmp cx,[eax+18]
		74	jne use_prediction_ok
		75	test byte [eax+8],8
		76	jz use_prediction_ok
		77	jmp use_misprediction
		78	check_use_prediction:
31	halyavin	79	test byte [eax+8],8
157	heavyiron	80	jz use_misprediction
		81	cmp cx,[eax+18]
		82	je use_prediction_ok
		83	use_misprediction:
31	halyavin	84	or [next_pass_needed],-1
157	heavyiron	85	use_prediction_ok:
31	halyavin	86	test byte [eax+8],40h
157	heavyiron	87	jz check_next_symbol
		88	and byte [eax+8],not 40h
		89	test byte [eax+8],4
		90	jnz define_misprediction
		91	mov cx,[current_pass]
		92	test byte [eax+8],80h
		93	jnz check_define_prediction
		94	cmp cx,[eax+16]
		95	jne check_next_symbol
		96	test byte [eax+8],1
		97	jz check_next_symbol
		98	jmp define_misprediction
		99	check_define_prediction:
31	halyavin	100	test byte [eax+8],1
157	heavyiron	101	jz define_misprediction
		102	cmp cx,[eax+16]
		103	je check_next_symbol
		104	define_misprediction:
31	halyavin	105	or [next_pass_needed],-1
157	heavyiron	106	check_next_symbol:
31	halyavin	107	add eax,LABEL_STRUCTURE_SIZE
157	heavyiron	108	jmp check_symbols
		109	symbols_checked:
31	halyavin	110	cmp [next_pass_needed],0
157	heavyiron	111	jne next_pass
		112	mov eax,[error_line]
		113	or eax,eax
		114	jz assemble_ok
		115	mov [current_line],eax
		116	jmp near [error]
		117	next_pass:
31	halyavin	118	inc [current_pass]
157	heavyiron	119	mov ax,[current_pass]
		120	cmp ax,[passes_limit]
		121	je code_cannot_be_generated
		122	jmp assembler_loop
		123	assemble_ok:
31	halyavin	124	ret
157	heavyiron	125
31	halyavin	126
		127	mov eax,[display_buffer]
157	heavyiron	128	sub eax,100h
		129	cmp edi,eax
		130	ja out_of_memory
		131	lods byte [esi]
		132	cmp al,1
		133	je assemble_instruction
		134	jb source_end
		135	cmp al,3
		136	jb define_label
		137	je define_constant
		138	cmp al,0Fh
		139	je new_line
		140	cmp al,13h
		141	je code_type_setting
		142	cmp al,10h
		143	jne illegal_instruction
		144	lods byte [esi]
		145	jmp segment_prefix
		146	code_type_setting:
31	halyavin	147	lods byte [esi]
157	heavyiron	148	mov [code_type],al
		149	jmp line_assembled
		150	new_line:
31	halyavin	151	lods dword [esi]
157	heavyiron	152	mov [current_line],eax
		153	mov [prefixed_instruction],0
		154	continue_line:
31	halyavin	155	cmp byte [esi],0Fh
157	heavyiron	156	je line_assembled
		157	jmp assemble_line
		158	define_label:
31	halyavin	159	lods dword [esi]
157	heavyiron	160	cmp eax,0Fh
		161	jb invalid_use_of_symbol
		162	je reserved_word_used_as_symbol
		163	mov ebx,eax
		164	lods byte [esi]
		165	mov cl,al
		166	mov eax,edi
		167	xor edx,edx
		168	sub eax,dword [org_origin]
		169	sbb edx,dword [org_origin+4]
		170	mov ch,[labels_type]
		171	cmp [virtual_data],0
		172	jne make_virtual_label
		173	or byte [ebx+9],1
		174	xchg eax,[ebx]
		175	xchg edx,[ebx+4]
		176	sub eax,[ebx]
		177	sbb edx,[ebx+4]
		178	mov dword [adjustment],eax
		179	mov dword [adjustment+4],edx
		180	or eax,edx
		181	setnz ah
		182	jmp finish_label_symbol
		183	make_virtual_label:
31	halyavin	184	and byte [ebx+9],not 1
157	heavyiron	185	cmp eax,[ebx]
		186	mov [ebx],eax
		187	setne ah
		188	cmp edx,[ebx+4]
		189	mov [ebx+4],edx
		190	setne al
		191	or ah,al
		192	finish_label_symbol:
31	halyavin	193	cmp cl,[ebx+10]
157	heavyiron	194	mov [ebx+10],cl
		195	setne al
		196	or ah,al
		197	cmp ch,[ebx+11]
		198	mov [ebx+11],ch
		199	setne al
		200	or ah,al
		201	mov edx,[org_registers]
		202	cmp edx,[ebx+12]
		203	mov [ebx+12],edx
		204	setne al
		205	or ah,al
		206	or ch,ch
		207	jz label_symbol_ok
		208	mov edx,[org_symbol]
		209	cmp edx,[ebx+20]
		210	mov [ebx+20],edx
		211	setne al
		212	or ah,al
		213	label_symbol_ok:
31	halyavin	214	mov cx,[current_pass]
157	heavyiron	215	xchg [ebx+16],cx
		216	mov edx,[current_line]
		217	mov [ebx+28],edx
		218	and byte [ebx+8],not 2
		219	test byte [ebx+8],1
		220	jz new_label
		221	cmp cx,[ebx+16]
		222	je symbol_already_defined
		223	inc cx
		224	sub cx,[ebx+16]
		225	setnz al
		226	or ah,al
		227	jz continue_line
		228	test byte [ebx+8],8
		229	jz continue_line
		230	mov cx,[current_pass]
		231	cmp cx,[ebx+18]
		232	jne continue_line
		233	or [next_pass_needed],-1
		234	jmp continue_line
		235	new_label:
31	halyavin	236	or byte [ebx+8],1
157	heavyiron	237	jmp continue_line
		238	define_constant:
31	halyavin	239	lods dword [esi]
157	heavyiron	240	inc esi
		241	cmp eax,0Fh
		242	jb invalid_use_of_symbol
		243	je reserved_word_used_as_symbol
		244	mov edx,[eax+8]
		245	push edx
		246	cmp [current_pass],0
		247	je get_constant_value
		248	test dl,4
		249	jnz get_constant_value
		250	mov cx,[current_pass]
		251	cmp cx,[eax+16]
		252	je get_constant_value
		253	and dl,not 1
		254	mov [eax+8],dl
		255	get_constant_value:
31	halyavin	256	push eax
157	heavyiron	257	mov al,byte [esi-1]
		258	push eax
		259	call get_value
		260	pop ebx
		261	mov ch,bl
		262	pop ebx
		263	pop dword [ebx+8]
		264	cmp ebx,0Fh
		265	jb invalid_use_of_symbol
		266	je reserved_word_used_as_symbol
		267	xor cl,cl
		268	mov ch,[value_type]
		269	cmp ch,3
		270	je invalid_use_of_symbol
		271	make_constant:
31	halyavin	272	and byte [ebx+9],not 1
157	heavyiron	273	cmp eax,[ebx]
		274	mov [ebx],eax
		275	setne ah
		276	cmp edx,[ebx+4]
		277	mov [ebx+4],edx
		278	setne al
		279	or ah,al
		280	cmp cl,[ebx+10]
		281	mov [ebx+10],cl
		282	setne al
		283	or ah,al
		284	cmp ch,[ebx+11]
		285	mov [ebx+11],ch
		286	setne al
		287	or ah,al
		288	xor edx,edx
		289	cmp edx,[ebx+12]
		290	mov [ebx+12],edx
		291	setne al
		292	or ah,al
		293	or ch,ch
		294	jz constant_symbol_ok
		295	mov edx,[symbol_identifier]
		296	cmp edx,[ebx+20]
		297	mov [ebx+20],edx
		298	setne al
		299	or ah,al
		300	constant_symbol_ok:
31	halyavin	301	mov cx,[current_pass]
157	heavyiron	302	xchg [ebx+16],cx
		303	mov edx,[current_line]
		304	mov [ebx+28],edx
		305	test byte [ebx+8],1
		306	jz new_constant
		307	cmp cx,[ebx+16]
		308	jne redeclare_constant
		309	test byte [ebx+8],2
		310	jz symbol_already_defined
		311	or byte [ebx+8],4
		312	jmp instruction_assembled
		313	redeclare_constant:
31	halyavin	314	inc cx
157	heavyiron	315	sub cx,[ebx+16]
		316	setnz al
		317	or ah,al
		318	jz instruction_assembled
		319	test byte [ebx+8],4
		320	jnz instruction_assembled
		321	test byte [ebx+8],8
		322	jz instruction_assembled
		323	mov cx,[current_pass]
		324	cmp cx,[ebx+18]
		325	jne instruction_assembled
		326	or [next_pass_needed],-1
		327	jmp instruction_assembled
		328	new_constant:
31	halyavin	329	or byte [ebx+8],1+2
157	heavyiron	330	jmp instruction_assembled
		331	assemble_instruction:
31	halyavin	332	mov [operand_size],0
157	heavyiron	333	mov [size_override],0
		334	mov [operand_prefix],0
		335	mov [rex_prefix],0
		336	mov [immediate_size],0
		337	movzx ebx,word [esi]
		338	mov al,[esi+2]
		339	add ebx,assembler
		340	add esi,3
		341	jmp near ebx
		342	instruction_assembled:
31	halyavin	343	mov al,[esi]
157	heavyiron	344	cmp al,0Fh
		345	je line_assembled
		346	or al,al
		347	jnz extra_characters_on_line
		348	line_assembled:
31	halyavin	349	clc
157	heavyiron	350	ret
		351	source_end:
31	halyavin	352	dec esi
157	heavyiron	353	stc
		354	ret
		355	skip_line:
31	halyavin	356	call skip_symbol
157	heavyiron	357	jnc skip_line
		358	ret
		359	skip_symbol:
31	halyavin	360	lods byte [esi]
157	heavyiron	361	or al,al
		362	jz nothing_to_skip
		363	cmp al,0Fh
		364	je nothing_to_skip
		365	cmp al,1
		366	je skip_instruction
		367	cmp al,2
		368	je skip_label
		369	cmp al,3
		370	je skip_label
		371	cmp al,20h
		372	jb skip_assembler_symbol
		373	cmp al,'('
		374	je skip_expression
		375	cmp al,'['
		376	je skip_address
		377	skip_done:
31	halyavin	378	clc
157	heavyiron	379	ret
		380	skip_label:
31	halyavin	381	add esi,2
157	heavyiron	382	skip_instruction:
31	halyavin	383	add esi,2
157	heavyiron	384	skip_assembler_symbol:
31	halyavin	385	inc esi
157	heavyiron	386	jmp skip_done
		387	skip_address:
31	halyavin	388	mov al,[esi]
157	heavyiron	389	and al,11110000b
		390	cmp al,60h
		391	jb skip_expression
		392	cmp al,70h
		393	ja skip_expression
		394	inc esi
		395	jmp skip_address
		396	skip_expression:
31	halyavin	397	lods byte [esi]
157	heavyiron	398	or al,al
		399	jz skip_string
		400	cmp al,'.'
		401	je skip_fp_value
		402	cmp al,')'
		403	je skip_done
		404	cmp al,']'
		405	je skip_done
		406	cmp al,'!'
		407	je skip_expression
		408	cmp al,0Fh
		409	je skip_expression
		410	cmp al,10h
		411	je skip_register
		412	cmp al,11h
		413	je skip_label_value
		414	cmp al,80h
		415	jae skip_expression
		416	movzx eax,al
		417	add esi,eax
		418	jmp skip_expression
		419	skip_label_value:
31	halyavin	420	add esi,3
157	heavyiron	421	skip_register:
31	halyavin	422	inc esi
157	heavyiron	423	jmp skip_expression
		424	skip_fp_value:
31	halyavin	425	add esi,12
157	heavyiron	426	jmp skip_done
		427	skip_string:
31	halyavin	428	lods dword [esi]
157	heavyiron	429	add esi,eax
		430	inc esi
		431	jmp skip_done
		432	nothing_to_skip:
31	halyavin	433	dec esi
157	heavyiron	434	stc
		435	ret
		436
31	halyavin	437
		438	lods byte [esi]
157	heavyiron	439	cmp al,'('
		440	jne invalid_argument
		441	cmp byte [esi],'.'
		442	je invalid_value
		443	call get_qword_value
		444	mov cl,[value_type]
		445	test cl,1
		446	jnz invalid_use_of_symbol
		447	mov [labels_type],cl
		448	mov ecx,edi
		449	sub ecx,eax
		450	adc edx,0
		451	neg edx
		452	mov dword [org_origin],ecx
		453	mov dword [org_origin+4],edx
		454	mov [org_registers],0
		455	mov [org_start],edi
		456	mov edx,[symbol_identifier]
		457	mov [org_symbol],edx
		458	cmp [output_format],1
		459	ja instruction_assembled
		460	cmp edi,[code_start]
		461	jne instruction_assembled
		462	cmp eax,100h
		463	jne instruction_assembled
		464	bts [format_flags],0
		465	jmp instruction_assembled
		466	label_directive:
31	halyavin	467	lods byte [esi]
157	heavyiron	468	cmp al,2
		469	jne invalid_argument
		470	lods dword [esi]
		471	cmp eax,0Fh
		472	jb invalid_use_of_symbol
		473	je reserved_word_used_as_symbol
		474	inc esi
		475	mov ebx,eax
		476	xor cl,cl
		477	lods byte [esi]
		478	cmp al,':'
		479	je get_label_size
		480	dec esi
		481	cmp al,11h
		482	jne label_size_ok
		483	get_label_size:
31	halyavin	484	lods word [esi]
157	heavyiron	485	cmp al,11h
		486	jne invalid_argument
		487	mov cl,ah
		488	label_size_ok:
31	halyavin	489	mov eax,edi
157	heavyiron	490	xor edx,edx
		491	sub eax,dword [org_origin]
		492	sbb edx,dword [org_origin+4]
		493	mov ebp,[org_registers]
		494	cmp byte [esi],80h
		495	je get_free_label_value
		496	mov ch,[labels_type]
		497	push [org_symbol]
		498	pop [address_symbol]
		499	cmp [virtual_data],0
		500	jne make_free_label
		501	or byte [ebx+9],1
		502	xchg eax,[ebx]
		503	xchg edx,[ebx+4]
		504	sub eax,[ebx]
		505	sbb edx,[ebx+4]
		506	mov dword [adjustment],eax
		507	mov dword [adjustment+4],edx
		508	or eax,edx
		509	setne ah
		510	jmp finish_label
		511	get_free_label_value:
31	halyavin	512	inc esi
157	heavyiron	513	lods byte [esi]
		514	cmp al,'('
		515	jne invalid_argument
		516	push dword [ebx+8]
		517	push ebx ecx
		518	and byte [ebx+8],not 1
		519	cmp byte [esi],'.'
		520	je invalid_value
		521	call get_address_value
		522	or bh,bh
		523	setnz ch
		524	xchg ch,cl
		525	mov bp,cx
		526	shl ebp,16
		527	xchg bl,bh
		528	mov bp,bx
		529	pop ecx ebx
		530	pop dword [ebx+8]
		531	mov ch,[value_type]
		532	or ch,ch
		533	jz make_free_label
		534	cmp ch,4
		535	je make_free_label
		536	cmp ch,2
		537	jne invalid_use_of_symbol
		538	make_free_label:
31	halyavin	539	and byte [ebx+9],not 1
157	heavyiron	540	cmp eax,[ebx]
		541	mov [ebx],eax
		542	setne ah
		543	cmp edx,[ebx+4]
		544	mov [ebx+4],edx
		545	setne al
		546	or ah,al
		547	jmp finish_label
		548	finish_label:
31	halyavin	549	cmp cl,[ebx+10]
157	heavyiron	550	mov [ebx+10],cl
		551	setne al
		552	or ah,al
		553	cmp ch,[ebx+11]
		554	mov [ebx+11],ch
		555	setne al
		556	or ah,al
		557	cmp ebp,[ebx+12]
		558	mov [ebx+12],ebp
		559	setne al
		560	or ah,al
		561	or ch,ch
		562	jz free_label_symbol_ok
		563	mov edx,[address_symbol]
		564	cmp edx,[ebx+20]
		565	mov [ebx+20],edx
		566	setne al
		567	or ah,al
		568	free_label_symbol_ok:
31	halyavin	569	mov cx,[current_pass]
157	heavyiron	570	xchg [ebx+16],cx
		571	mov edx,[current_line]
		572	mov [ebx+28],edx
		573	and byte [ebx+8],not 2
		574	test byte [ebx+8],1
		575	jz new_free_label
		576	cmp cx,[ebx+16]
		577	je symbol_already_defined
		578	inc cx
		579	sub cx,[ebx+16]
		580	setnz al
		581	or ah,al
		582	jz instruction_assembled
		583	test byte [ebx+8],8
		584	jz instruction_assembled
		585	mov cx,[current_pass]
		586	cmp cx,[ebx+18]
		587	jne instruction_assembled
		588	or [next_pass_needed],-1
		589	jmp instruction_assembled
		590	new_free_label:
31	halyavin	591	or byte [ebx+8],1
157	heavyiron	592	jmp instruction_assembled
		593	load_directive:
31	halyavin	594	lods byte [esi]
157	heavyiron	595	cmp al,2
		596	jne invalid_argument
		597	lods dword [esi]
		598	cmp eax,0Fh
		599	jb invalid_use_of_symbol
		600	je reserved_word_used_as_symbol
		601	inc esi
		602	push eax
		603	mov al,1
		604	cmp byte [esi],11h
		605	jne load_size_ok
		606	lods byte [esi]
		607	lods byte [esi]
		608	load_size_ok:
31	halyavin	609	cmp al,8
157	heavyiron	610	ja invalid_value
		611	mov [operand_size],al
		612	mov dword [value],0
		613	mov dword [value+4],0
		614	lods word [esi]
		615	cmp ax,82h+'(' shl 8
		616	jne invalid_argument
		617	load_from_code:
31	halyavin	618	cmp byte [esi],'.'
157	heavyiron	619	je invalid_value
		620	call get_relative_offset
		621	neg eax
		622	cmp [next_pass_needed],0
		623	jne load_address_ok
		624	cmp [value_type],0
		625	jne invalid_use_of_symbol
		626	load_address_ok:
31	halyavin	627	push esi edi
157	heavyiron	628	mov esi,edi
		629	sub esi,eax
		630	jc bad_load_address
		631	cmp esi,[org_start]
		632	jb bad_load_address
		633	mov edi,value
		634	movzx ecx,[operand_size]
		635	cmp ecx,eax
		636	ja bad_load_address
		637	rep movs byte [edi],[esi]
		638	jmp value_loaded
		639	bad_load_address:
31	halyavin	640	cmp [error_line],0
157	heavyiron	641	jne value_loaded
		642	mov eax,[current_line]
		643	mov [error_line],eax
		644	mov [error],value_out_of_range
		645	value_loaded:
31	halyavin	646	pop edi esi
157	heavyiron	647	mov eax,dword [value]
		648	mov edx,dword [value+4]
		649	pop ebx
		650	xor cx,cx
		651	jmp make_constant
		652	store_directive:
31	halyavin	653	cmp byte [esi],11h
157	heavyiron	654	je sized_store
		655	lods byte [esi]
		656	cmp al,'('
		657	jne invalid_argument
		658	call get_byte_value
		659	xor edx,edx
		660	movzx eax,al
		661	mov [operand_size],1
		662	jmp store_value_ok
		663	sized_store:
31	halyavin	664	call get_value
157	heavyiron	665	store_value_ok:
31	halyavin	666	cmp [value_type],0
157	heavyiron	667	jne invalid_use_of_symbol
		668	mov dword [value],eax
		669	mov dword [value+4],edx
		670	lods word [esi]
		671	cmp ax,80h+'(' shl 8
		672	jne invalid_argument
		673	cmp byte [esi],'.'
		674	je invalid_value
		675	call get_relative_offset
		676	neg eax
		677	cmp [next_pass_needed],0
		678	jne store_address_ok
		679	cmp [value_type],0
		680	jne invalid_use_of_symbol
		681	store_address_ok:
31	halyavin	682	push esi edi
157	heavyiron	683	sub edi,eax
		684	jc bad_store_address
		685	cmp edi,[org_start]
		686	jb bad_store_address
		687	mov esi,value
		688	movzx ecx,[operand_size]
		689	cmp ecx,eax
		690	ja bad_store_address
		691	rep movs byte [edi],[esi]
		692	mov eax,edi
		693	pop edi esi
		694	cmp edi,[undefined_data_end]
		695	jne instruction_assembled
		696	cmp eax,[undefined_data_start]
		697	jbe instruction_assembled
		698	mov [undefined_data_start],eax
		699	jmp instruction_assembled
		700	bad_store_address:
31	halyavin	701	pop edi esi
157	heavyiron	702	cmp [error_line],0
		703	jne instruction_assembled
		704	mov eax,[current_line]
		705	mov [error_line],eax
		706	mov [error],value_out_of_range
		707	jmp instruction_assembled
		708
31	halyavin	709
		710	lods byte [esi]
157	heavyiron	711	cmp al,'('
		712	jne invalid_argument
		713	cmp byte [esi],0
		714	jne display_byte
		715	inc esi
		716	lods dword [esi]
		717	mov ecx,eax
		718	push edi
		719	mov edi,[display_buffer]
		720	sub edi,4
		721	sub edi,eax
		722	mov [display_buffer],edi
		723	rep movs byte [edi],[esi]
		724	stos dword [edi]
		725	pop edi
		726	inc esi
		727	jmp display_next
		728	display_byte:
31	halyavin	729	call get_byte_value
157	heavyiron	730	push edi
		731	mov edi,[display_buffer]
		732	sub edi,4+1
		733	mov [display_buffer],edi
		734	stos byte [edi]
		735	mov eax,1
		736	stos dword [edi]
		737	pop edi
		738	display_next:
31	halyavin	739	cmp edi,[display_buffer]
157	heavyiron	740	ja out_of_memory
		741	lods byte [esi]
		742	cmp al,','
		743	je display_directive
		744	dec esi
		745	jmp instruction_assembled
		746	flush_display_buffer:
31	halyavin	747	mov eax,[display_buffer]
157	heavyiron	748	or eax,eax
		749	jz display_done
		750	mov esi,[labels_list]
		751	cmp esi,eax
		752	je display_done
		753	display_messages:
31	halyavin	754	sub esi,4
157	heavyiron	755	mov ecx,[esi]
		756	sub esi,ecx
		757	push esi
		758	call display_block
		759	pop esi
		760	cmp esi,[display_buffer]
		761	jne display_messages
		762	mov eax,[labels_list]
		763	mov [display_buffer],eax
		764	display_done:
31	halyavin	765	ret
157	heavyiron	766	times_directive:
31	halyavin	767	lods byte [esi]
157	heavyiron	768	cmp al,'('
		769	jne invalid_argument
		770	cmp byte [esi],'.'
		771	je invalid_value
		772	call get_dword_value
		773	cmp [next_pass_needed],0
		774	jne times_value_ok
		775	cmp [value_type],0
		776	jne invalid_use_of_symbol
		777	times_value_ok:
31	halyavin	778	cmp eax,0
157	heavyiron	779	je zero_times
		780	jl negative_times
		781	cmp byte [esi],':'
		782	jne times_argument_ok
		783	inc esi
		784	times_argument_ok:
31	halyavin	785	push [counter]
157	heavyiron	786	push [counter_limit]
		787	mov [counter_limit],eax
		788	mov [counter],1
		789	times_loop:
31	halyavin	790	mov eax,esp
157	heavyiron	791	sub eax,100h
		792	jc stack_overflow
		793	cmp eax,[stack_limit]
		794	jb stack_overflow
		795	push esi
		796	or [prefixed_instruction],-1
		797	call continue_line
		798	mov eax,[counter_limit]
		799	cmp [counter],eax
		800	je times_done
		801	inc [counter]
		802	pop esi
		803	jmp times_loop
		804	times_done:
31	halyavin	805	pop eax
157	heavyiron	806	pop [counter_limit]
		807	pop [counter]
		808	jmp instruction_assembled
		809	negative_times:
31	halyavin	810	cmp [error_line],0
157	heavyiron	811	jne zero_times
		812	mov eax,[current_line]
		813	mov [error_line],eax
		814	mov [error],invalid_value
		815	zero_times:
31	halyavin	816	call skip_line
157	heavyiron	817	jmp instruction_assembled
		818
31	halyavin	819
		820	lods byte [esi]
157	heavyiron	821	cmp al,80h
		822	jne virtual_at_current
		823	lods byte [esi]
		824	cmp al,'('
		825	jne invalid_argument
		826	cmp byte [esi],'.'
		827	je invalid_value
		828	call get_address_value
		829	mov ebp,[address_symbol]
		830	xor ch,ch
		831	or bh,bh
		832	jz set_virtual
		833	mov ch,1
		834	jmp set_virtual
		835	virtual_at_current:
31	halyavin	836	dec esi
157	heavyiron	837	mov al,[labels_type]
		838	mov [value_type],al
		839	mov ebp,[org_symbol]
		840	mov eax,edi
		841	xor edx,edx
		842	sub eax,dword [org_origin]
		843	sbb edx,dword [org_origin+4]
		844	mov bx,word [org_registers]
		845	mov cx,word [org_registers+2]
		846	xchg bh,bl
		847	xchg ch,cl
		848	set_virtual:
31	halyavin	849	push [org_registers]
157	heavyiron	850	mov byte [org_registers],bh
		851	mov byte [org_registers+1],bl
		852	mov byte [org_registers+2],ch
		853	mov byte [org_registers+3],cl
		854	call allocate_structure_data
		855	mov word [ebx],virtual_directive-assembler
		856	not eax
		857	not edx
		858	add eax,1
		859	adc edx,0
		860	add eax,edi
		861	adc edx,0
		862	xchg dword [org_origin],eax
		863	xchg dword [org_origin+4],edx
		864	mov [ebx+10h],eax
		865	mov [ebx+14h],edx
		866	pop eax
		867	mov [ebx+18h],eax
		868	mov al,[virtual_data]
		869	mov [ebx+2],al
		870	mov al,[labels_type]
		871	mov [ebx+3],al
		872	mov eax,edi
		873	xchg eax,[org_start]
		874	mov [ebx+0Ch],eax
		875	xchg ebp,[org_symbol]
		876	mov [ebx+1Ch],ebp
		877	mov [ebx+8],edi
		878	mov eax,[current_line]
		879	mov [ebx+4],eax
		880	or [virtual_data],-1
		881	mov al,[value_type]
		882	test al,1
		883	jnz invalid_use_of_symbol
		884	mov [labels_type],al
		885	jmp instruction_assembled
		886	allocate_structure_data:
31	halyavin	887	mov ebx,[structures_buffer]
157	heavyiron	888	sub ebx,20h
		889	cmp ebx,[free_additional_memory]
		890	jb out_of_memory
		891	mov [structures_buffer],ebx
		892	ret
		893	find_structure_data:
31	halyavin	894	mov ebx,[structures_buffer]
157	heavyiron	895	scan_structures:
31	halyavin	896	cmp ebx,[additional_memory_end]
157	heavyiron	897	je no_such_structure
		898	cmp ax,[ebx]
		899	je structure_data_found
		900	add ebx,20h
		901	jmp scan_structures
		902	structure_data_found:
109	heavyiron	903	ret
157	heavyiron	904	no_such_structure:
31	halyavin	905	stc
157	heavyiron	906	ret
		907	end_virtual:
31	halyavin	908	call find_structure_data
157	heavyiron	909	jc unexpected_instruction
		910	mov al,[ebx+2]
		911	mov [virtual_data],al
		912	mov al,[ebx+3]
		913	mov [labels_type],al
		914	mov eax,[ebx+10h]
		915	mov dword [org_origin],eax
		916	mov eax,[ebx+14h]
		917	mov dword [org_origin+4],eax
		918	mov eax,[ebx+18h]
		919	mov [org_registers],eax
		920	mov eax,[ebx+0Ch]
		921	mov [org_start],eax
		922	mov eax,[ebx+1Ch]
		923	mov [org_symbol],eax
		924	mov edi,[ebx+8]
		925	remove_structure_data:
31	halyavin	926	push esi edi
157	heavyiron	927	mov esi,[structures_buffer]
		928	mov ecx,ebx
		929	sub ecx,esi
		930	lea edi,[esi+20h]
		931	mov [structures_buffer],edi
		932	shr ecx,2
		933	rep movs dword [edi],[esi]
		934	pop edi esi
		935	ret
		936	repeat_directive:
31	halyavin	937	cmp [prefixed_instruction],0
157	heavyiron	938	jne unexpected_instruction
		939	lods byte [esi]
		940	cmp al,'('
		941	jne invalid_argument
		942	cmp byte [esi],'.'
		943	je invalid_value
		944	call get_dword_value
		945	cmp [next_pass_needed],0
		946	jne repeat_value_ok
		947	cmp [value_type],0
		948	jne invalid_use_of_symbol
		949	repeat_value_ok:
31	halyavin	950	cmp eax,0
157	heavyiron	951	je zero_repeat
		952	jl negative_repeat
		953	call allocate_structure_data
		954	mov word [ebx],repeat_directive-assembler
		955	xchg eax,[counter_limit]
		956	mov [ebx+10h],eax
		957	mov eax,1
		958	xchg eax,[counter]
		959	mov [ebx+14h],eax
		960	mov [ebx+8],esi
		961	mov eax,[current_line]
		962	mov [ebx+4],eax
		963	jmp instruction_assembled
		964	end_repeat:
31	halyavin	965	cmp [prefixed_instruction],0
157	heavyiron	966	jne unexpected_instruction
		967	call find_structure_data
		968	jc unexpected_instruction
		969	mov eax,[counter_limit]
		970	inc [counter]
		971	cmp [counter],eax
		972	jbe continue_repeating
		973	stop_repeat:
31	halyavin	974	mov eax,[ebx+10h]
157	heavyiron	975	mov [counter_limit],eax
		976	mov eax,[ebx+14h]
		977	mov [counter],eax
		978	call remove_structure_data
		979	jmp instruction_assembled
		980	continue_repeating:
31	halyavin	981	mov esi,[ebx+8]
157	heavyiron	982	jmp instruction_assembled
		983	negative_repeat:
31	halyavin	984	cmp [error_line],0
157	heavyiron	985	jne zero_repeat
		986	mov eax,[current_line]
		987	mov [error_line],eax
		988	mov [error],invalid_value
		989	zero_repeat:
31	halyavin	990	mov al,[esi]
157	heavyiron	991	or al,al
		992	jz missing_end_directive
		993	cmp al,0Fh
		994	jne extra_characters_on_line
		995	call find_end_repeat
		996	jmp instruction_assembled
		997	find_end_repeat:
31	halyavin	998	call find_structure_end
157	heavyiron	999	cmp ax,repeat_directive-assembler
		1000	jne unexpected_instruction
		1001	ret
		1002	while_directive:
31	halyavin	1003	cmp [prefixed_instruction],0
157	heavyiron	1004	jne unexpected_instruction
		1005	call allocate_structure_data
		1006	mov word [ebx],while_directive-assembler
		1007	mov eax,1
		1008	xchg eax,[counter]
		1009	mov [ebx+10h],eax
		1010	mov [ebx+8],esi
		1011	mov eax,[current_line]
		1012	mov [ebx+4],eax
		1013	do_while:
31	halyavin	1014	push ebx
157	heavyiron	1015	call calculate_logical_expression
		1016	or al,al
		1017	jnz while_true
		1018	mov al,[esi]
		1019	or al,al
		1020	jz missing_end_directive
		1021	cmp al,0Fh
		1022	jne extra_characters_on_line
		1023	stop_while:
31	halyavin	1024	call find_end_while
157	heavyiron	1025	pop ebx
		1026	mov eax,[ebx+10h]
		1027	mov [counter],eax
		1028	call remove_structure_data
		1029	jmp instruction_assembled
		1030	while_true:
31	halyavin	1031	pop ebx
157	heavyiron	1032	jmp instruction_assembled
		1033	end_while:
31	halyavin	1034	cmp [prefixed_instruction],0
157	heavyiron	1035	jne unexpected_instruction
		1036	call find_structure_data
		1037	jc unexpected_instruction
		1038	mov eax,[ebx+4]
		1039	mov [current_line],eax
		1040	inc [counter]
		1041	jz too_many_repeats
		1042	mov esi,[ebx+8]
		1043	jmp do_while
		1044	find_end_while:
31	halyavin	1045	call find_structure_end
157	heavyiron	1046	cmp ax,while_directive-assembler
		1047	jne unexpected_instruction
		1048	ret
		1049	if_directive:
31	halyavin	1050	cmp [prefixed_instruction],0
157	heavyiron	1051	jne unexpected_instruction
		1052	call calculate_logical_expression
		1053	mov dl,al
		1054	mov al,[esi]
		1055	or al,al
		1056	jz missing_end_directive
		1057	cmp al,0Fh
		1058	jne extra_characters_on_line
		1059	or dl,dl
		1060	jnz if_true
		1061	call find_else
		1062	jc instruction_assembled
		1063	mov al,[esi]
		1064	cmp al,1
		1065	jne else_true
		1066	cmp word [esi+1],if_directive-assembler
		1067	jne else_true
		1068	add esi,4
		1069	jmp if_directive
		1070	if_true:
31	halyavin	1071	xor al,al
157	heavyiron	1072	make_if_structure:
31	halyavin	1073	call allocate_structure_data
157	heavyiron	1074	mov word [ebx],if_directive-assembler
		1075	mov byte [ebx+2],al
		1076	mov eax,[current_line]
		1077	mov [ebx+4],eax
		1078	jmp instruction_assembled
		1079	else_true:
31	halyavin	1080	or al,al
157	heavyiron	1081	jz missing_end_directive
		1082	cmp al,0Fh
		1083	jne extra_characters_on_line
		1084	or al,-1
		1085	jmp make_if_structure
		1086	else_directive:
31	halyavin	1087	cmp [prefixed_instruction],0
157	heavyiron	1088	jne unexpected_instruction
		1089	mov ax,if_directive-assembler
		1090	call find_structure_data
		1091	jc unexpected_instruction
		1092	cmp byte [ebx+2],0
		1093	jne unexpected_instruction
		1094	found_else:
31	halyavin	1095	mov al,[esi]
157	heavyiron	1096	cmp al,1
		1097	jne skip_else
		1098	cmp word [esi+1],if_directive-assembler
		1099	jne skip_else
		1100	add esi,4
		1101	call find_else
		1102	jnc found_else
		1103	call remove_structure_data
		1104	jmp instruction_assembled
		1105	skip_else:
31	halyavin	1106	or al,al
157	heavyiron	1107	jz missing_end_directive
		1108	cmp al,0Fh
		1109	jne extra_characters_on_line
		1110	call find_end_if
		1111	call remove_structure_data
		1112	jmp instruction_assembled
		1113	end_if:
31	halyavin	1114	cmp [prefixed_instruction],0
157	heavyiron	1115	jne unexpected_instruction
		1116	call find_structure_data
		1117	jc unexpected_instruction
		1118	call remove_structure_data
		1119	jmp instruction_assembled
		1120	find_else:
31	halyavin	1121	call find_structure_end
157	heavyiron	1122	cmp ax,else_directive-assembler
		1123	je else_found
		1124	cmp ax,if_directive-assembler
		1125	jne unexpected_instruction
		1126	stc
		1127	ret
		1128	else_found:
31	halyavin	1129	clc
157	heavyiron	1130	ret
		1131	find_end_if:
31	halyavin	1132	call find_structure_end
157	heavyiron	1133	cmp ax,if_directive-assembler
		1134	jne unexpected_instruction
		1135	ret
		1136	find_structure_end:
31	halyavin	1137	push [error_line]
157	heavyiron	1138	mov eax,[current_line]
		1139	mov [error_line],eax
		1140	find_end_directive:
31	halyavin	1141	call skip_line
157	heavyiron	1142	lods byte [esi]
		1143	cmp al,0Fh
		1144	jne no_end_directive
		1145	lods dword [esi]
		1146	mov [current_line],eax
		1147	skip_labels:
31	halyavin	1148	cmp byte [esi],2
157	heavyiron	1149	jne labels_ok
		1150	add esi,6
		1151	jmp skip_labels
		1152	labels_ok:
31	halyavin	1153	cmp byte [esi],1
157	heavyiron	1154	jne find_end_directive
		1155	mov ax,[esi+1]
		1156	cmp ax,prefix_instruction-assembler
		1157	je find_end_directive
		1158	add esi,4
		1159	cmp ax,repeat_directive-assembler
		1160	je skip_repeat
		1161	cmp ax,while_directive-assembler
		1162	je skip_while
		1163	cmp ax,if_directive-assembler
		1164	je skip_if
		1165	cmp ax,else_directive-assembler
		1166	je structure_end
		1167	cmp ax,end_directive-assembler
		1168	jne find_end_directive
		1169	cmp byte [esi],1
		1170	jne find_end_directive
		1171	mov ax,[esi+1]
		1172	add esi,4
		1173	cmp ax,repeat_directive-assembler
		1174	je structure_end
		1175	cmp ax,while_directive-assembler
		1176	je structure_end
		1177	cmp ax,if_directive-assembler
		1178	jne find_end_directive
		1179	structure_end:
31	halyavin	1180	pop [error_line]
157	heavyiron	1181	ret
		1182	no_end_directive:
31	halyavin	1183	mov eax,[error_line]
157	heavyiron	1184	mov [current_line],eax
		1185	jmp missing_end_directive
		1186	skip_repeat:
31	halyavin	1187	call find_end_repeat
157	heavyiron	1188	jmp find_end_directive
		1189	skip_while:
31	halyavin	1190	call find_end_while
157	heavyiron	1191	jmp find_end_directive
		1192	skip_if:
31	halyavin	1193	call skip_if_block
157	heavyiron	1194	jmp find_end_directive
		1195	skip_if_block:
31	halyavin	1196	call find_else
157	heavyiron	1197	jc if_block_skipped
		1198	cmp byte [esi],1
		1199	jne skip_after_else
		1200	cmp word [esi+1],if_directive-assembler
		1201	jne skip_after_else
		1202	add esi,4
		1203	jmp skip_if_block
		1204	skip_after_else:
31	halyavin	1205	call find_end_if
157	heavyiron	1206	if_block_skipped:
31	halyavin	1207	ret
157	heavyiron	1208	end_directive:
31	halyavin	1209	lods byte [esi]
157	heavyiron	1210	cmp al,1
		1211	jne invalid_argument
		1212	lods word [esi]
		1213	inc esi
		1214	cmp ax,virtual_directive-assembler
		1215	je end_virtual
		1216	cmp ax,repeat_directive-assembler
		1217	je end_repeat
		1218	cmp ax,while_directive-assembler
		1219	je end_while
		1220	cmp ax,if_directive-assembler
		1221	je end_if
		1222	cmp ax,data_directive-assembler
		1223	je end_data
		1224	jmp invalid_argument
		1225	break_directive:
31	halyavin	1226	mov ebx,[structures_buffer]
157	heavyiron	1227	mov al,[esi]
		1228	or al,al
		1229	jz find_breakable_structure
		1230	cmp al,0Fh
		1231	jne extra_characters_on_line
		1232	find_breakable_structure:
31	halyavin	1233	cmp ebx,[additional_memory_end]
157	heavyiron	1234	je unexpected_instruction
		1235	mov ax,[ebx]
		1236	cmp ax,repeat_directive-assembler
		1237	je break_repeat
		1238	cmp ax,while_directive-assembler
		1239	je break_while
		1240	cmp ax,if_directive-assembler
		1241	je break_if
		1242	add ebx,20h
		1243	jmp find_breakable_structure
		1244	break_if:
31	halyavin	1245	push [current_line]
157	heavyiron	1246	mov eax,[ebx+4]
		1247	mov [current_line],eax
		1248	call remove_structure_data
		1249	call skip_if_block
		1250	pop [current_line]
		1251	mov ebx,[structures_buffer]
		1252	jmp find_breakable_structure
		1253	break_repeat:
31	halyavin	1254	push ebx
157	heavyiron	1255	call find_end_repeat
		1256	pop ebx
		1257	jmp stop_repeat
		1258	break_while:
31	halyavin	1259	push ebx
157	heavyiron	1260	jmp stop_while
		1261
31	halyavin	1262
		1263	call define_data
157	heavyiron	1264	lods byte [esi]
		1265	cmp al,'('
		1266	je get_byte
		1267	cmp al,'?'
		1268	jne invalid_argument
		1269	mov eax,edi
		1270	mov byte [edi],0
		1271	inc edi
		1272	jmp undefined_data
		1273	get_byte:
31	halyavin	1274	cmp byte [esi],0
157	heavyiron	1275	je get_string
		1276	call get_byte_value
		1277	stos byte [edi]
		1278	ret
		1279	get_string:
31	halyavin	1280	inc esi
157	heavyiron	1281	lods dword [esi]
		1282	mov ecx,eax
		1283	lea eax,[edi+ecx]
		1284	cmp eax,[display_buffer]
		1285	ja out_of_memory
		1286	rep movs byte [edi],[esi]
		1287	inc esi
		1288	ret
		1289	undefined_data:
31	halyavin	1290	cmp [virtual_data],0
157	heavyiron	1291	je mark_undefined_data
		1292	ret
		1293	mark_undefined_data:
31	halyavin	1294	cmp eax,[undefined_data_end]
157	heavyiron	1295	je undefined_data_ok
		1296	mov [undefined_data_start],eax
		1297	undefined_data_ok:
31	halyavin	1298	mov [undefined_data_end],edi
157	heavyiron	1299	ret
		1300	define_data:
31	halyavin	1301	cmp edi,[display_buffer]
157	heavyiron	1302	jae out_of_memory
		1303	cmp byte [esi],'('
		1304	jne simple_data_value
		1305	mov ebx,esi
		1306	inc esi
		1307	call skip_expression
		1308	xchg esi,ebx
		1309	cmp byte [ebx],81h
		1310	jne simple_data_value
		1311	inc esi
		1312	call get_dword_value
		1313	cmp [next_pass_needed],0
		1314	jne dup_value_ok
		1315	cmp [value_type],0
		1316	jne invalid_use_of_symbol
		1317	dup_value_ok:
31	halyavin	1318	inc esi
157	heavyiron	1319	cmp eax,0
		1320	jg dup_positive
		1321	cmp [error_line],0
		1322	jne dup_invalid
		1323	mov eax,[current_line]
		1324	mov [error_line],eax
		1325	mov [error],invalid_value
		1326	dup_invalid:
31	halyavin	1327	mov eax,1
157	heavyiron	1328	dup_positive:
31	halyavin	1329	cmp byte [esi],'{'
157	heavyiron	1330	jne duplicate_single_data_value
		1331	inc esi
		1332	duplicate_data:
31	halyavin	1333	push eax esi
157	heavyiron	1334	duplicated_values:
31	halyavin	1335	cmp edi,[display_buffer]
157	heavyiron	1336	jae out_of_memory
		1337	call near dword [esp+8]
		1338	lods byte [esi]
		1339	cmp al,','
		1340	je duplicated_values
		1341	cmp al,'}'
		1342	jne invalid_argument
		1343	pop ebx eax
		1344	dec eax
		1345	jz data_defined
		1346	mov esi,ebx
		1347	jmp duplicate_data
		1348	duplicate_single_data_value:
31	halyavin	1349	cmp edi,[display_buffer]
157	heavyiron	1350	jae out_of_memory
		1351	push eax esi
		1352	call near dword [esp+8]
		1353	pop ebx eax
		1354	dec eax
		1355	jz data_defined
		1356	mov esi,ebx
		1357	jmp duplicate_single_data_value
		1358	simple_data_value:
31	halyavin	1359	cmp edi,[display_buffer]
157	heavyiron	1360	jae out_of_memory
		1361	call near dword [esp]
		1362	data_defined:
31	halyavin	1363	lods byte [esi]
157	heavyiron	1364	cmp al,','
		1365	je define_data
		1366	dec esi
		1367	add esp,4
		1368	jmp instruction_assembled
		1369	data_unicode:
31	halyavin	1370	or [base_code],-1
157	heavyiron	1371	jmp define_words
		1372	data_words:
31	halyavin	1373	mov [base_code],0
157	heavyiron	1374	define_words:
31	halyavin	1375	call define_data
157	heavyiron	1376	lods byte [esi]
		1377	cmp al,'('
		1378	je get_word
		1379	cmp al,'?'
		1380	jne invalid_argument
		1381	mov eax,edi
		1382	mov word [edi],0
		1383	scas word [edi]
		1384	jmp undefined_data
		1385	ret
		1386	get_word:
31	halyavin	1387	cmp [base_code],0
157	heavyiron	1388	je word_data_value
		1389	cmp byte [esi],0
		1390	je word_string
		1391	word_data_value:
31	halyavin	1392	call get_word_value
157	heavyiron	1393	call mark_relocation
		1394	stos word [edi]
		1395	ret
		1396	word_string:
31	halyavin	1397	inc esi
157	heavyiron	1398	lods dword [esi]
		1399	mov ecx,eax
		1400	jecxz word_string_ok
		1401	lea eax,[edi+ecx*2]
		1402	cmp eax,[display_buffer]
		1403	ja out_of_memory
		1404	xor ah,ah
		1405	copy_word_string:
31	halyavin	1406	lods byte [esi]
157	heavyiron	1407	stos word [edi]
		1408	loop copy_word_string
		1409	word_string_ok:
31	halyavin	1410	inc esi
157	heavyiron	1411	ret
		1412	data_dwords:
31	halyavin	1413	call define_data
157	heavyiron	1414	lods byte [esi]
		1415	cmp al,'('
		1416	je get_dword
		1417	cmp al,'?'
		1418	jne invalid_argument
		1419	mov eax,edi
		1420	mov dword [edi],0
		1421	scas dword [edi]
		1422	jmp undefined_data
		1423	get_dword:
31	halyavin	1424	push esi
157	heavyiron	1425	call get_dword_value
		1426	pop ebx
		1427	cmp byte [esi],':'
		1428	je complex_dword
		1429	call mark_relocation
		1430	stos dword [edi]
		1431	ret
		1432	complex_dword:
31	halyavin	1433	mov esi,ebx
157	heavyiron	1434	cmp byte [esi],'.'
		1435	je invalid_value
		1436	call get_word_value
		1437	push eax
		1438	inc esi
		1439	lods byte [esi]
		1440	cmp al,'('
		1441	jne invalid_operand
		1442	mov al,[value_type]
		1443	push eax
		1444	cmp byte [esi],'.'
		1445	je invalid_value
		1446	call get_word_value
		1447	call mark_relocation
		1448	stos word [edi]
		1449	pop eax
		1450	mov [value_type],al
		1451	pop eax
		1452	call mark_relocation
		1453	stos word [edi]
		1454	ret
		1455	data_pwords:
31	halyavin	1456	call define_data
157	heavyiron	1457	lods byte [esi]
		1458	cmp al,'('
		1459	je get_pword
		1460	cmp al,'?'
		1461	jne invalid_argument
		1462	mov eax,edi
		1463	mov dword [edi],0
		1464	scas dword [edi]
		1465	mov word [edi],0
		1466	scas word [edi]
		1467	jmp undefined_data
		1468	get_pword:
31	halyavin	1469	push esi
157	heavyiron	1470	call get_pword_value
		1471	pop ebx
		1472	cmp byte [esi],':'
		1473	je complex_pword
		1474	call mark_relocation
		1475	stos dword [edi]
		1476	mov ax,dx
		1477	stos word [edi]
		1478	ret
		1479	complex_pword:
31	halyavin	1480	mov esi,ebx
157	heavyiron	1481	cmp byte [esi],'.'
		1482	je invalid_value
		1483	call get_word_value
		1484	push eax
		1485	inc esi
		1486	lods byte [esi]
		1487	cmp al,'('
		1488	jne invalid_operand
		1489	mov al,[value_type]
		1490	push eax
		1491	cmp byte [esi],'.'
		1492	je invalid_value
		1493	call get_dword_value
		1494	call mark_relocation
		1495	stos dword [edi]
		1496	pop eax
		1497	mov [value_type],al
		1498	pop eax
		1499	call mark_relocation
		1500	stos word [edi]
		1501	ret
		1502	data_qwords:
31	halyavin	1503	call define_data
157	heavyiron	1504	lods byte [esi]
		1505	cmp al,'('
		1506	je get_qword
		1507	cmp al,'?'
		1508	jne invalid_argument
		1509	mov eax,edi
		1510	mov dword [edi],0
		1511	scas dword [edi]
		1512	mov dword [edi],0
		1513	scas dword [edi]
		1514	jmp undefined_data
		1515	get_qword:
31	halyavin	1516	call get_qword_value
157	heavyiron	1517	call mark_relocation
		1518	stos dword [edi]
		1519	mov eax,edx
		1520	stos dword [edi]
		1521	ret
		1522	data_twords:
31	halyavin	1523	call define_data
157	heavyiron	1524	lods byte [esi]
		1525	cmp al,'('
		1526	je get_tword
		1527	cmp al,'?'
		1528	jne invalid_argument
		1529	mov eax,edi
		1530	mov dword [edi],0
		1531	scas dword [edi]
		1532	mov dword [edi],0
		1533	scas dword [edi]
		1534	mov word [edi],0
		1535	scas word [edi]
		1536	jmp undefined_data
		1537	get_tword:
31	halyavin	1538	cmp byte [esi],'.'
157	heavyiron	1539	jne complex_tword
		1540	inc esi
		1541	cmp word [esi+8],8000h
		1542	je fp_zero_tword
		1543	mov eax,[esi]
		1544	stos dword [edi]
		1545	mov eax,[esi+4]
		1546	stos dword [edi]
		1547	mov ax,[esi+8]
		1548	add ax,3FFFh
		1549	cmp ax,8000h
		1550	jae value_out_of_range
		1551	mov bl,[esi+11]
		1552	shl bx,15
		1553	or ax,bx
		1554	stos word [edi]
		1555	add esi,13
		1556	ret
		1557	fp_zero_tword:
31	halyavin	1558	xor eax,eax
157	heavyiron	1559	stos dword [edi]
		1560	stos dword [edi]
		1561	mov al,[esi+11]
		1562	shl ax,15
		1563	stos word [edi]
		1564	add esi,13
		1565	ret
		1566	complex_tword:
31	halyavin	1567	call get_word_value
157	heavyiron	1568	push eax
		1569	inc esi
		1570	lods byte [esi]
		1571	cmp al,'('
		1572	jne invalid_operand
		1573	mov al,[value_type]
		1574	push eax
		1575	cmp byte [esi],'.'
		1576	je invalid_value
		1577	call get_qword_value
		1578	call mark_relocation
		1579	stos dword [edi]
		1580	mov eax,edx
		1581	stos dword [edi]
		1582	pop eax
		1583	mov [value_type],al
		1584	pop eax
		1585	call mark_relocation
		1586	stos word [edi]
		1587	ret
		1588	data_file:
31	halyavin	1589	lods word [esi]
157	heavyiron	1590	cmp ax,'('
		1591	jne invalid_argument
		1592	add esi,4
		1593	call open_binary_file
		1594	mov eax,[esi-4]
		1595	lea esi,[esi+eax+1]
		1596	mov al,2
		1597	xor edx,edx
		1598	call lseek
		1599	push eax
		1600	xor edx,edx
		1601	cmp byte [esi],':'
		1602	jne position_ok
		1603	inc esi
		1604	cmp byte [esi],'('
		1605	jne invalid_argument
		1606	inc esi
		1607	cmp byte [esi],'.'
		1608	je invalid_value
		1609	push ebx
		1610	call get_dword_value
		1611	pop ebx
		1612	mov edx,eax
		1613	sub [esp],edx
		1614	position_ok:
31	halyavin	1615	cmp byte [esi],','
157	heavyiron	1616	jne size_ok
		1617	inc esi
		1618	cmp byte [esi],'('
		1619	jne invalid_argument
		1620	inc esi
		1621	cmp byte [esi],'.'
		1622	je invalid_value
		1623	push ebx edx
		1624	call get_dword_value
		1625	pop edx ebx
		1626	mov [esp],eax
		1627	size_ok:
31	halyavin	1628	xor al,al
157	heavyiron	1629	call lseek
		1630	pop ecx
		1631	mov edx,edi
		1632	add edi,ecx
		1633	jc out_of_memory
		1634	cmp edi,[display_buffer]
		1635	ja out_of_memory
		1636	call read
		1637	jc error_reading_file
		1638	call close
		1639	lods byte [esi]
		1640	cmp al,','
		1641	je data_file
		1642	dec esi
		1643	jmp instruction_assembled
		1644	open_binary_file:
31	halyavin	1645	push esi
157	heavyiron	1646	push edi
		1647	mov esi,[current_line]
		1648	mov esi,[esi]
		1649	get_current_path:
31	halyavin	1650	lodsb
157	heavyiron	1651	stosb
		1652	or al,al
		1653	jnz get_current_path
		1654	cut_current_path:
31	halyavin	1655	cmp edi,[esp]
157	heavyiron	1656	je current_path_ok
		1657	cmp byte [edi-1],'\'
		1658	je current_path_ok
		1659	cmp byte [edi-1],'/'
		1660	je current_path_ok
		1661	dec edi
		1662	jmp cut_current_path
		1663	current_path_ok:
31	halyavin	1664	mov esi,[esp+4]
157	heavyiron	1665	call preprocess_path
		1666	pop edx
		1667	mov esi,edx
		1668	call open
		1669	jnc file_opened
		1670	mov edi,esi
		1671	mov esi,[esp]
		1672	push edi
		1673	call preprocess_path
		1674	pop edx
		1675	mov esi,edx
		1676	call open
		1677	jc file_not_found
		1678	file_opened:
31	halyavin	1679	mov edi,esi
157	heavyiron	1680	pop esi
		1681	ret
		1682	reserve_bytes:
31	halyavin	1683	lods byte [esi]
157	heavyiron	1684	cmp al,'('
		1685	jne invalid_argument
		1686	cmp byte [esi],'.'
		1687	je invalid_value
		1688	call get_dword_value
		1689	cmp [next_pass_needed],0
		1690	jne rb_value_ok
		1691	cmp [value_type],0
		1692	jne invalid_use_of_symbol
		1693	rb_value_ok:
31	halyavin	1694	cmp eax,0
157	heavyiron	1695	jl reserve_negative
		1696	mov ecx,eax
		1697	mov edx,ecx
		1698	add edx,edi
		1699	jc out_of_memory
		1700	cmp edx,[display_buffer]
		1701	ja out_of_memory
		1702	push edi
		1703	cmp [next_pass_needed],0
		1704	je zero_bytes
		1705	add edi,ecx
		1706	jmp reserved_data
		1707	zero_bytes:
31	halyavin	1708	xor eax,eax
157	heavyiron	1709	shr ecx,1
		1710	jnc bytes_stosb_ok
		1711	stos byte [edi]
		1712	bytes_stosb_ok:
31	halyavin	1713	shr ecx,1
157	heavyiron	1714	jnc bytes_stosw_ok
		1715	stos word [edi]
		1716	bytes_stosw_ok:
31	halyavin	1717	rep stos dword [edi]
157	heavyiron	1718	reserved_data:
31	halyavin	1719	pop eax
157	heavyiron	1720	call undefined_data
		1721	jmp instruction_assembled
		1722	reserve_negative:
31	halyavin	1723	cmp [error_line],0
157	heavyiron	1724	jne instruction_assembled
		1725	mov eax,[current_line]
		1726	mov [error_line],eax
		1727	mov [error],invalid_value
		1728	jmp instruction_assembled
		1729	reserve_words:
31	halyavin	1730	lods byte [esi]
157	heavyiron	1731	cmp al,'('
		1732	jne invalid_argument
		1733	cmp byte [esi],'.'
		1734	je invalid_value
		1735	call get_dword_value
		1736	cmp [next_pass_needed],0
		1737	jne rw_value_ok
		1738	cmp [value_type],0
		1739	jne invalid_use_of_symbol
		1740	rw_value_ok:
31	halyavin	1741	cmp eax,0
157	heavyiron	1742	jl reserve_negative
		1743	mov ecx,eax
		1744	mov edx,ecx
		1745	shl edx,1
		1746	jc out_of_memory
		1747	add edx,edi
		1748	jc out_of_memory
		1749	cmp edx,[display_buffer]
		1750	ja out_of_memory
		1751	push edi
		1752	cmp [next_pass_needed],0
		1753	je zero_words
		1754	lea edi,[edi+ecx*2]
		1755	jmp reserved_data
		1756	zero_words:
31	halyavin	1757	xor eax,eax
157	heavyiron	1758	shr ecx,1
		1759	jnc words_stosw_ok
		1760	stos word [edi]
		1761	words_stosw_ok:
31	halyavin	1762	rep stos dword [edi]
157	heavyiron	1763	jmp reserved_data
		1764	reserve_dwords:
31	halyavin	1765	lods byte [esi]
157	heavyiron	1766	cmp al,'('
		1767	jne invalid_argument
		1768	cmp byte [esi],'.'
		1769	je invalid_value
		1770	call get_dword_value
		1771	cmp [next_pass_needed],0
		1772	jne rd_value_ok
		1773	cmp [value_type],0
		1774	jne invalid_use_of_symbol
		1775	rd_value_ok:
31	halyavin	1776	cmp eax,0
157	heavyiron	1777	jl reserve_negative
		1778	mov ecx,eax
		1779	mov edx,ecx
		1780	shl edx,1
		1781	jc out_of_memory
		1782	shl edx,1
		1783	jc out_of_memory
		1784	add edx,edi
		1785	jc out_of_memory
		1786	cmp edx,[display_buffer]
		1787	ja out_of_memory
		1788	push edi
		1789	cmp [next_pass_needed],0
		1790	je zero_dwords
		1791	lea edi,[edi+ecx*4]
		1792	jmp reserved_data
		1793	zero_dwords:
31	halyavin	1794	xor eax,eax
157	heavyiron	1795	rep stos dword [edi]
		1796	jmp reserved_data
		1797	reserve_pwords:
31	halyavin	1798	lods byte [esi]
157	heavyiron	1799	cmp al,'('
		1800	jne invalid_argument
		1801	cmp byte [esi],'.'
		1802	je invalid_value
		1803	call get_dword_value
		1804	cmp [next_pass_needed],0
		1805	jne rp_value_ok
		1806	cmp [value_type],0
		1807	jne invalid_use_of_symbol
		1808	rp_value_ok:
31	halyavin	1809	cmp eax,0
157	heavyiron	1810	jl reserve_negative
		1811	mov ecx,eax
		1812	shl ecx,1
		1813	jc out_of_memory
		1814	add ecx,eax
		1815	mov edx,ecx
		1816	shl edx,1
		1817	jc out_of_memory
		1818	add edx,edi
		1819	jc out_of_memory
		1820	cmp edx,[display_buffer]
		1821	ja out_of_memory
		1822	push edi
		1823	cmp [next_pass_needed],0
		1824	je zero_words
		1825	lea edi,[edi+ecx*2]
		1826	jmp reserved_data
		1827	reserve_qwords:
31	halyavin	1828	lods byte [esi]
157	heavyiron	1829	cmp al,'('
		1830	jne invalid_argument
		1831	cmp byte [esi],'.'
		1832	je invalid_value
		1833	call get_dword_value
		1834	cmp [next_pass_needed],0
		1835	jne rq_value_ok
		1836	cmp [value_type],0
		1837	jne invalid_use_of_symbol
		1838	rq_value_ok:
31	halyavin	1839	cmp eax,0
157	heavyiron	1840	jl reserve_negative
		1841	mov ecx,eax
		1842	shl ecx,1
		1843	jc out_of_memory
		1844	mov edx,ecx
		1845	shl edx,1
		1846	jc out_of_memory
		1847	shl edx,1
		1848	jc out_of_memory
		1849	add edx,edi
		1850	jc out_of_memory
		1851	cmp edx,[display_buffer]
		1852	ja out_of_memory
		1853	push edi
		1854	cmp [next_pass_needed],0
		1855	je zero_dwords
		1856	lea edi,[edi+ecx*4]
		1857	jmp reserved_data
		1858	reserve_twords:
31	halyavin	1859	lods byte [esi]
157	heavyiron	1860	cmp al,'('
		1861	jne invalid_argument
		1862	cmp byte [esi],'.'
		1863	je invalid_value
		1864	call get_dword_value
		1865	cmp [next_pass_needed],0
		1866	jne rt_value_ok
		1867	cmp [value_type],0
		1868	jne invalid_use_of_symbol
		1869	rt_value_ok:
31	halyavin	1870	cmp eax,0
157	heavyiron	1871	jl reserve_negative
		1872	mov ecx,eax
		1873	shl ecx,2
		1874	jc out_of_memory
		1875	add ecx,eax
		1876	mov edx,ecx
		1877	shl edx,1
		1878	jc out_of_memory
		1879	add edx,edi
		1880	jc out_of_memory
		1881	cmp edx,[display_buffer]
		1882	ja out_of_memory
		1883	push edi
		1884	cmp [next_pass_needed],0
		1885	je zero_words
		1886	lea edi,[edi+ecx*2]
		1887	jmp reserved_data
		1888	align_directive:
31	halyavin	1889	lods byte [esi]
157	heavyiron	1890	cmp al,'('
		1891	jne invalid_argument
		1892	cmp byte [esi],'.'
		1893	je invalid_value
		1894	call get_dword_value
		1895	cmp [value_type],0
		1896	jne invalid_use_of_symbol
		1897	mov edx,eax
		1898	dec edx
		1899	test eax,edx
		1900	jnz negative_times
		1901	or eax,eax
		1902	jz negative_times
		1903	cmp eax,1
		1904	je instruction_assembled
		1905	mov ecx,edi
		1906	sub ecx,dword [org_origin]
		1907	cmp [org_registers],0
		1908	jne section_not_aligned_enough
		1909	cmp [labels_type],0
		1910	je make_alignment
		1911	cmp [output_format],3
		1912	je pe_alignment
		1913	mov ebx,[org_symbol]
		1914	cmp byte [ebx],0
		1915	jne section_not_aligned_enough
		1916	cmp eax,[ebx+10h]
		1917	jbe make_alignment
		1918	jmp section_not_aligned_enough
		1919	pe_alignment:
31	halyavin	1920	cmp eax,1000h
157	heavyiron	1921	ja section_not_aligned_enough
		1922	make_alignment:
31	halyavin	1923	dec eax
157	heavyiron	1924	and ecx,eax
		1925	jz instruction_assembled
		1926	neg ecx
		1927	add ecx,eax
		1928	inc ecx
		1929	mov edx,ecx
		1930	add edx,edi
		1931	jc out_of_memory
		1932	cmp edx,[display_buffer]
		1933	ja out_of_memory
		1934	push edi
		1935	cmp [next_pass_needed],0
		1936	je nops
		1937	add edi,ecx
		1938	jmp reserved_data
		1939	nops:
31	halyavin	1940	mov eax,90909090h
157	heavyiron	1941	shr ecx,1
		1942	jnc nops_stosb_ok
		1943	stos byte [edi]
		1944	nops_stosb_ok:
31	halyavin	1945	shr ecx,1
157	heavyiron	1946	jnc nops_stosw_ok
		1947	stos word [edi]
		1948	nops_stosw_ok:
31	halyavin	1949	rep stos dword [edi]
157	heavyiron	1950	jmp reserved_data
		1951

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(root)/programs/develop/fasm/trunk/assemble.inc – Rev 157