WebSVN – Kolibri OS – Diff – /programs/develop/fasm/trunk/expressi.inc


; flat assembler core
; Copyright (c) 1999-2007, Tomasz Grysztar.
; All rights reserved.
 
convert_expression:
	push	ebp
	call	get_fp_value
	jnc	fp_expression
	mov	[current_offset],esp
      expression_loop:
	push	edi
	mov	edi,single_operand_operators
	call	get_operator
	pop	edi
	or	al,al
	jz	expression_element
	push	eax
	jmp	expression_loop
      expression_element:
	mov	al,[esi]
	cmp	al,1Ah
	je	expression_number
	cmp	al,22h
	je	expression_number
	cmp	al,'('
	je	expression_number
	mov	al,'!'
	stos	byte [edi]
	jmp	expression_operator
      expression_number:
	call	convert_number
      expression_operator:
	push	edi
	mov	edi,operators
	call	get_operator
	pop	edi
	or	al,al
	jz	expression_end
      operators_loop:
	cmp	esp,[current_offset]
	je	push_operator
	mov	bl,al
	and	bl,0F0h
	mov	bh,byte [esp]
	and	bh,0F0h
	cmp	bl,bh
	ja	push_operator
	pop	ebx
	mov	byte [edi],bl
	inc	edi
	jmp	operators_loop
      push_operator:
	push	eax
	jmp	expression_loop
      expression_end:
	cmp	esp,[current_offset]
	je	expression_converted
	pop	eax
	stos	byte [edi]
	jmp	expression_end
      expression_converted:
	pop	ebp
	ret
      fp_expression:
	mov	al,'.'
	stos	byte [edi]
	mov	eax,[fp_value]
	stos	dword [edi]
	mov	eax,[fp_value+4]
	stos	dword [edi]
	mov	eax,[fp_value+8]
	stos	dword [edi]
	pop	ebp
	ret
 
convert_number:
	lea	eax,[edi-10h]
	cmp	eax,[labels_list]
	jae	out_of_memory
	cmp	byte [esi],'('
	je	expression_value
	inc	edi
	call	get_number
	jc	symbol_value
	or	ebp,ebp
	jz	valid_number
	mov	byte [edi-1],0Fh
	ret
      valid_number:
	cmp	dword [edi+4],0
	jne	qword_number
	cmp	word [edi+2],0
	jne	dword_number
	cmp	byte [edi+1],0
	jne	word_number
      byte_number:
	mov	byte [edi-1],1
	inc	edi
	ret
      qword_number:
	mov	byte [edi-1],8
	add	edi,8
	ret
      dword_number:
	mov	byte [edi-1],4
	scas	dword [edi]
	ret
      word_number:
	mov	byte [edi-1],2
	scas	word [edi]
	ret
      expression_value:
	mov	eax,esp
	sub	eax,100h
	jc	stack_overflow
	cmp	eax,[stack_limit]
	jb	stack_overflow
	inc	esi
	push	[current_offset]
	call	convert_expression
	pop	[current_offset]
	lods	byte [esi]
	cmp	al,')'
	jne	invalid_expression
	ret
      symbol_value:
	push	edi
	mov	edi,address_registers
	call	get_operator
	or	al,al
	jnz	register_value
	mov	edi,directive_operators
	call	get_operator
	pop	edi
	or	al,al
	jnz	broken_value
	lods	byte [esi]
	cmp	al,1Ah
	jne	invalid_value
	lods	byte [esi]
	movzx	ecx,al
	call	get_label_id
      store_label_value:
	mov	byte [edi-1],11h
	stos	dword [edi]
	ret
      broken_value:
	mov	eax,0Fh
	jmp	store_label_value
      register_value:
	pop	edi
	mov	byte [edi-1],10h
	stos	byte [edi]
	ret
 
get_number:
	xor	ebp,ebp
	lods	byte [esi]
	cmp	al,22h
	je	get_text_number
	cmp	al,1Ah
	jne	not_number
	lods	byte [esi]
	movzx	ecx,al
	mov	[number_start],esi
	mov	al,[esi]
	cmp	al,'$'
	je	number_begin
	sub	al,30h
	cmp	al,9
	ja	invalid_number
      number_begin:
	mov	ebx,esi
	add	esi,ecx
	push	esi
	dec	esi
	mov	dword [edi],0
	mov	dword [edi+4],0
	cmp	byte [ebx],'$'
	je	pascal_hex_number
	cmp	word [ebx],'0x'
	je	get_hex_number
	mov	al,[esi]
	dec	esi
	cmp	al,'h'
	je	get_hex_number
	cmp	al,'b'
	je	get_bin_number
	cmp	al,'d'
	je	get_dec_number
	cmp	al,'o'
	je	get_oct_number
	cmp	al,'H'
	je	get_hex_number
	cmp	al,'B'
	je	get_bin_number
	cmp	al,'D'
	je	get_dec_number
	cmp	al,'O'
	je	get_oct_number
	inc	esi
      get_dec_number:
	mov	ebx,esi
	mov	esi,[number_start]
      get_dec_digit:
	cmp	esi,ebx
	ja	number_ok
	xor	edx,edx
	mov	eax,[edi]
	shld	edx,eax,2
	shl	eax,2
	add	eax,[edi]
	adc	edx,0
	add	eax,eax
	adc	edx,edx
	mov	[edi],eax
	mov	eax,[edi+4]
	add	eax,eax
	jc	dec_out_of_range
	add	eax,eax
	jc	dec_out_of_range
	add	eax,[edi+4]
	jc	dec_out_of_range
	add	eax,eax
	jc	dec_out_of_range
	add	eax,edx
	jc	dec_out_of_range
	mov	[edi+4],eax
	movzx	eax,byte [esi]
	sub	al,30h
	cmp	al,9
	ja	bad_number
	add	[edi],eax
	adc	dword [edi+4],0
	jc	dec_out_of_range
	inc	esi
	jmp	get_dec_digit
      dec_out_of_range:
	or	ebp,-1
	inc	esi
	jmp	get_dec_digit
      bad_number:
	pop	eax
      invalid_number:
	mov	esi,[number_start]
	dec	esi
      not_number:
	dec	esi
	stc
	ret
      get_bin_number:
	xor	bl,bl
      get_bin_digit:
	cmp	esi,[number_start]
	jb	number_ok
	movzx	eax,byte [esi]
	sub	al,30h
	cmp	al,1
	ja	bad_number
	xor	edx,edx
	mov	cl,bl
	dec	esi
	cmp	bl,64
	je	bin_out_of_range
	inc	bl
	cmp	cl,32
	jae	bin_digit_high
	shl	eax,cl
	or	dword [edi],eax
	jmp	get_bin_digit
      bin_digit_high:
	sub	cl,32
	shl	eax,cl
	or	dword [edi+4],eax
	jmp	get_bin_digit
      bin_out_of_range:
	or	al,al
	jz	get_bin_digit
	or	ebp,-1
	jmp	get_bin_digit
      pascal_hex_number:
	cmp	cl,1
	je	bad_number
      get_hex_number:
	xor	bl,bl
      get_hex_digit:
	cmp	esi,[number_start]
	jb	number_ok
	movzx	eax,byte [esi]
	cmp	al,'x'
	je	hex_number_ok
	cmp	al,'$'
	je	pascal_hex_ok
	sub	al,30h
	cmp	al,9
	jbe	hex_digit_ok
	sub	al,7
	cmp	al,15
	jbe	hex_letter_digit_ok
	sub	al,20h
	cmp	al,15
	ja	bad_number
      hex_letter_digit_ok:
	cmp	al,10
	jb	bad_number
      hex_digit_ok:
	xor	edx,edx
	mov	cl,bl
	dec	esi
	cmp	bl,64
	je	hex_out_of_range
	add	bl,4
	cmp	cl,32
	jae	hex_digit_high
	shl	eax,cl
	or	dword [edi],eax
	jmp	get_hex_digit
      hex_digit_high:
	sub	cl,32
	shl	eax,cl
	or	dword [edi+4],eax
	jmp	get_hex_digit
      hex_out_of_range:
	or	al,al
	jz	get_hex_digit
	or	ebp,-1
	jmp	get_hex_digit
      get_oct_number:
	xor	bl,bl
      get_oct_digit:
	cmp	esi,[number_start]
	jb	number_ok
	movzx	eax,byte [esi]
	sub	al,30h
	cmp	al,7
	ja	bad_number
      oct_digit_ok:
	xor	edx,edx
	mov	cl,bl
	dec	esi
	cmp	bl,64
	jae	oct_out_of_range
	add	bl,3
	cmp	cl,30
	je	oct_digit_wrap
	ja	oct_digit_high
	shl	eax,cl
	or	dword [edi],eax
	jmp	get_oct_digit
      oct_digit_wrap:
	shl	eax,cl
	adc	dword [edi+4],0
	or	dword [edi],eax
	jmp	get_oct_digit
      oct_digit_high:
	sub	cl,32
	shl	eax,cl
	or	dword [edi+4],eax
	jmp	get_oct_digit
      oct_out_of_range:
	or	al,al
	jz	get_oct_digit
	or	ebp,-1
	jmp	get_oct_digit
      hex_number_ok:
	dec	esi
      pascal_hex_ok:
	cmp	esi,[number_start]
	jne	bad_number
      number_ok:
	pop	esi
      number_done:
	clc
	ret
      get_text_number:
	lods	dword [esi]
	mov	edx,eax
	xor	bl,bl
	mov	dword [edi],0
	mov	dword [edi+4],0
      get_text_character:
	sub	edx,1
	jc	number_done
	movzx	eax,byte [esi]
	inc	esi
	mov	cl,bl
	cmp	bl,64
	je	text_out_of_range
	add	bl,8
	cmp	cl,32
	jae	text_character_high
	shl	eax,cl
	or	dword [edi],eax
	jmp	get_text_character
      text_character_high:
	sub	cl,32
	shl	eax,cl
	or	dword [edi+4],eax
	jmp	get_text_character
      text_out_of_range:
	or	ebp,-1
	jmp	get_text_character
 
get_fp_value:
	push	edi esi
	lods	byte [esi]
	cmp	al,1Ah
	je	fp_value_start
	cmp	al,'-'
	je	fp_sign_ok
	cmp	al,'+'
	jne	not_fp_value
      fp_sign_ok:
	lods	byte [esi]
	cmp	al,1Ah
	jne	not_fp_value
      fp_value_start:
	lods	byte [esi]
	movzx	ecx,al
	cmp	cl,1
	jbe	not_fp_value
	lea	edx,[esi+1]
	xor	ah,ah
      check_fp_value:
	lods	byte [esi]
	cmp	al,'.'
	je	fp_character_dot
	cmp	al,'E'
	je	fp_character_exp
	cmp	al,'e'
	je	fp_character_exp
	cmp	al,'F'
	je	fp_last_character
	cmp	al,'f'
	je	fp_last_character
      digit_expected:
	cmp	al,'0'
	jb	not_fp_value
	cmp	al,'9'
	ja	not_fp_value
	jmp	fp_character_ok
      fp_character_dot:
	cmp	esi,edx
	je	not_fp_value
	or	ah,ah
	jnz	not_fp_value
	or	ah,1
	lods	byte [esi]
	loop	digit_expected
      not_fp_value:
	pop	esi edi
	stc
	ret
      fp_last_character:
	cmp	cl,1
	jne	not_fp_value
	or	ah,4
	jmp	fp_character_ok
      fp_character_exp:
	cmp	esi,edx
	je	not_fp_value
	cmp	ah,1
	ja	not_fp_value
	or	ah,2
	cmp	ecx,1
	jne	fp_character_ok
	cmp	byte [esi],'+'
	je	fp_exp_sign
	cmp	byte [esi],'-'
	jne	fp_character_ok
      fp_exp_sign:
	inc	esi
	cmp	byte [esi],1Ah
	jne	not_fp_value
	inc	esi
	lods	byte [esi]
	movzx	ecx,al
	inc	ecx
      fp_character_ok:
	dec	ecx
	jnz	check_fp_value
	or	ah,ah
	jz	not_fp_value
	pop	esi
	lods	byte [esi]
	mov	[fp_sign],0
	cmp	al,1Ah
	je	fp_get
	inc	esi
	cmp	al,'+'
	je	fp_get
	mov	[fp_sign],1
      fp_get:
	lods	byte [esi]
	movzx	ecx,al
	xor	edx,edx
	mov	edi,fp_value
	mov	[edi],edx
	mov	[edi+4],edx
	mov	[edi+12],edx
	call	fp_optimize
	mov	[fp_format],0
	mov	al,[esi]
      fp_before_dot:
	lods	byte [esi]
	cmp	al,'.'
	je	fp_dot
	cmp	al,'E'
	je	fp_exponent
	cmp	al,'e'
	je	fp_exponent
	cmp	al,'F'
	je	fp_done
	cmp	al,'f'
	je	fp_done
	sub	al,30h
	mov	edi,fp_value+16
	xor	edx,edx
	mov	dword [edi+12],edx
	mov	dword [edi],edx
	mov	dword [edi+4],edx
	mov	[edi+7],al
	mov	dl,7
	mov	dword [edi+8],edx
	call	fp_optimize
	mov	edi,fp_value
	push	ecx
	mov	ecx,10
	call	fp_mul
	pop	ecx
	mov	ebx,fp_value+16
	call	fp_add
	loop	fp_before_dot
      fp_dot:
	mov	edi,fp_value+16
	xor	edx,edx
	mov	[edi],edx
	mov	[edi+4],edx
	mov	byte [edi+7],80h
	mov	[edi+8],edx
	mov	dword [edi+12],edx
	dec	ecx
	jz	fp_done
      fp_after_dot:
	lods	byte [esi]
	cmp	al,'E'
	je	fp_exponent
	cmp	al,'e'
	je	fp_exponent
	cmp	al,'F'
	je	fp_done
	cmp	al,'f'
	je	fp_done
	inc	[fp_format]
	cmp	[fp_format],80h
	jne	fp_counter_ok
	mov	[fp_format],7Fh
      fp_counter_ok:
	dec	esi
	mov	edi,fp_value+16
	push	ecx
	mov	ecx,10
	call	fp_div
	push	dword [edi]
	push	dword [edi+4]
	push	dword [edi+8]
	push	dword [edi+12]
	lods	byte [esi]
	sub	al,30h
	movzx	ecx,al
	call	fp_mul
	mov	ebx,edi
	mov	edi,fp_value
	call	fp_add
	mov	edi,fp_value+16
	pop	dword [edi+12]
	pop	dword [edi+8]
	pop	dword [edi+4]
	pop	dword [edi]
	pop	ecx
	loop	fp_after_dot
	jmp	fp_done
      fp_exponent:
	or	[fp_format],80h
	xor	edx,edx
	xor	ebp,ebp
	dec	ecx
	jnz	get_exponent
	cmp	byte [esi],'+'
	je	fp_exponent_sign
	cmp	byte [esi],'-'
	jne	fp_done
	not	ebp
      fp_exponent_sign:
	add	esi,2
	lods	byte [esi]
	movzx	ecx,al
      get_exponent:
	movzx	eax,byte [esi]
	inc	esi
	sub	al,30h
	cmp	al,10
	jae	exponent_ok
	imul	edx,10
	cmp	edx,8000h
	jae	value_out_of_range
	add	edx,eax
	loop	get_exponent
      exponent_ok:
	mov	edi,fp_value
	or	edx,edx
	jz	fp_done
	mov	ecx,edx
	or	ebp,ebp
	jnz	fp_negative_power
      fp_power:
	push	ecx
	mov	ecx,10
	call	fp_mul
	pop	ecx
	loop	fp_power
	jmp	fp_done
      fp_negative_power:
	push	ecx
	mov	ecx,10
	call	fp_div
	pop	ecx
	loop	fp_negative_power
      fp_done:
	mov	edi,fp_value
	mov	al,[fp_format]
	mov	[edi+10],al
	mov	al,[fp_sign]
	mov	[edi+11],al
	test	byte [edi+15],80h
	jz	fp_ok
	add	dword [edi],1
	adc	dword [edi+4],0
	jnc	fp_ok
	mov	eax,[edi+4]
	shrd	[edi],eax,1
	shr	eax,1
	or	eax,80000000h
	mov	[edi+4],eax
	inc	word [edi+8]
      fp_ok:
	pop	edi
	clc
	ret
      fp_mul:
	or	ecx,ecx
	jz	fp_zero
	mov	eax,[edi+12]
	mul	ecx
	mov	[edi+12],eax
	mov	ebx,edx
	mov	eax,[edi]
	mul	ecx
	add	eax,ebx
	adc	edx,0
	mov	[edi],eax
	mov	ebx,edx
	mov	eax,[edi+4]
	mul	ecx
	add	eax,ebx
	adc	edx,0
	mov	[edi+4],eax
      .loop:
	or	edx,edx
	jz	.done
	mov	eax,[edi]
	shrd	[edi+12],eax,1
	mov	eax,[edi+4]
	shrd	[edi],eax,1
	shrd	eax,edx,1
	mov	[edi+4],eax
	shr	edx,1
	inc	dword [edi+8]
	cmp	dword [edi+8],8000h
	jge	value_out_of_range
	jmp	.loop
      .done:
	ret
      fp_div:
	mov	eax,[edi+4]
	xor	edx,edx
	div	ecx
	mov	[edi+4],eax
	mov	eax,[edi]
	div	ecx
	mov	[edi],eax
	mov	eax,[edi+12]
	div	ecx
	mov	[edi+12],eax
	mov	ebx,eax
	or	ebx,[edi]
	or	ebx,[edi+4]
	jz	fp_zero
      .loop:
	test	byte [edi+7],80h
	jnz	.exp_ok
	mov	eax,[edi]
	shld	[edi+4],eax,1
	mov	eax,[edi+12]
	shld	[edi],eax,1
	add	eax,eax
	mov	[edi+12],eax
	dec	dword [edi+8]
	add	edx,edx
	jmp	.loop
      .exp_ok:
	mov	eax,edx
	xor	edx,edx
	div	ecx
	add	[edi+12],eax
	adc	dword [edi],0
	adc	dword [edi+4],0
	jnc	.done
	mov	eax,[edi+4]
	mov	ebx,[edi]
	shrd	[edi],eax,1
	shrd	[edi+12],ebx,1
	shr	eax,1
	or	eax,80000000h
	mov	[edi+4],eax
	inc	dword [edi+8]
      .done:
	ret
      fp_add:
	cmp	dword [ebx+8],8000h
	je	.done
	cmp	dword [edi+8],8000h
	je	.copy
	mov	eax,[ebx+8]
	cmp	eax,[edi+8]
	jge	.exp_ok
	mov	eax,[edi+8]
      .exp_ok:
	call	.change_exp
	xchg	ebx,edi
	call	.change_exp
	xchg	ebx,edi
	mov	edx,[ebx+12]
	mov	eax,[ebx]
	mov	ebx,[ebx+4]
	add	[edi+12],edx
	adc	[edi],eax
	adc	[edi+4],ebx
	jnc	.done
	mov	eax,[edi]
	shrd	[edi+12],eax,1
	mov	eax,[edi+4]
	shrd	[edi],eax,1
	shr	eax,1
	or	eax,80000000h
	mov	[edi+4],eax
	inc	dword [edi+8]
      .done:
	ret
      .copy:
	mov	eax,[ebx]
	mov	[edi],eax
	mov	eax,[ebx+4]
	mov	[edi+4],eax
	mov	eax,[ebx+8]
	mov	[edi+8],eax
	mov	eax,[ebx+12]
	mov	[edi+12],eax
	ret
      .change_exp:
	push	ecx
	mov	ecx,eax
	sub	ecx,[ebx+8]
	mov	edx,[ebx+4]
	jecxz	.exp_done
      .exp_loop:
	mov	ebp,[ebx]
	shrd	[ebx+12],ebp,1
	shrd	[ebx],edx,1
	shr	edx,1
	inc	dword [ebx+8]
	loop	.exp_loop
      .exp_done:
	mov	[ebx+4],edx
	pop	ecx
	ret
      fp_optimize:
	mov	eax,[edi]
	mov	ebp,[edi+4]
	or	ebp,[edi]
	or	ebp,[edi+12]
	jz	fp_zero
      .loop:
	test	byte [edi+7],80h
	jnz	.done
	shld	[edi+4],eax,1
	mov	ebp,[edi+12]
	shld	eax,ebp,1
	mov	[edi],eax
	shl	dword [edi+12],1
	dec	dword [edi+8]
	jmp	.loop
      .done:
	ret
      fp_zero:
	mov	dword [edi+8],8000h
	ret
 
calculate_expression:
	mov	[current_offset],edi
	mov	[value_undefined],0
	cmp	byte [esi],0
	je	get_string_value
	cmp	byte [esi],'.'
	je	convert_fp
      calculation_loop:
	lods	byte [esi]
	cmp	al,1
	je	get_byte_number
	cmp	al,2
	je	get_word_number
	cmp	al,4
	je	get_dword_number
	cmp	al,8
	je	get_qword_number
	cmp	al,0Fh
	je	value_out_of_range
	cmp	al,10h
	je	get_register
	cmp	al,11h
	je	get_label
	cmp	al,')'
	je	expression_calculated
	cmp	al,']'
	je	expression_calculated
	cmp	al,'!'
	je	invalid_expression
	sub	edi,14h
	mov	ebx,edi
	sub	ebx,14h
	cmp	al,0E0h
	je	calculate_rva
	cmp	al,0E1h
	je	calculate_plt
	cmp	al,0D0h
	je	calculate_not
	cmp	al,083h
	je	calculate_neg
	mov	dx,[ebx+8]
	or	dx,[edi+8]
	cmp	al,80h
	je	calculate_add
	cmp	al,81h
	je	calculate_sub
	mov	ah,[ebx+12]
	or	ah,[edi+12]
	jz	absolute_values_calculation
	cmp	[error_line],0
	jne	absolute_values_calculation
	mov	eax,[current_line]
	mov	[error_line],eax
	mov	[error],invalid_use_of_symbol
      absolute_values_calculation:
	cmp	al,90h
	je	calculate_mul
	cmp	al,91h
	je	calculate_div
	or	dx,dx
	jnz	invalid_expression
	cmp	al,0A0h
	je	calculate_mod
	cmp	al,0B0h
	je	calculate_and
	cmp	al,0B1h
	je	calculate_or
	cmp	al,0B2h
	je	calculate_xor
	cmp	al,0C0h
	je	calculate_shl
	cmp	al,0C1h
	je	calculate_shr
	jmp	invalid_expression
      expression_calculated:
	sub	edi,14h
	cmp	[value_undefined],0
	je	expression_value_ok
	xor	eax,eax
	mov	[edi],eax
	mov	[edi+4],eax
	mov	[edi+12],al
      expression_value_ok:
	ret
      get_byte_number:
	mov	word [edi+8],0
	mov	byte [edi+12],0
	xor	eax,eax
	lods	byte [esi]
	stos	dword [edi]
	xor	al,al
	stos	dword [edi]
	add	edi,0Ch
	jmp	calculation_loop
      get_word_number:
	mov	word [edi+8],0
	mov	byte [edi+12],0
	xor	eax,eax
	lods	word [esi]
	stos	dword [edi]
	xor	ax,ax
	stos	dword [edi]
	add	edi,0Ch
	jmp	calculation_loop
      get_dword_number:
	mov	word [edi+8],0
	mov	byte [edi+12],0
	movs	dword [edi],[esi]
	xor	eax,eax
	stos	dword [edi]
	add	edi,0Ch
	jmp	calculation_loop
      get_qword_number:
	mov	word [edi+8],0
	mov	byte [edi+12],0
	movs	dword [edi],[esi]
	movs	dword [edi],[esi]
	add	edi,0Ch
	jmp	calculation_loop
      get_register:
	mov	byte [edi+9],0
	mov	byte [edi+12],0
	lods	byte [esi]
	mov	[edi+8],al
	mov	byte [edi+10],1
	xor	eax,eax
	stos	dword [edi]
	stos	dword [edi]
	add	edi,0Ch
	jmp	calculation_loop
      get_label:
	xor	eax,eax
	mov	[edi+8],eax
	mov	[edi+12],al
	mov	[edi+20],eax
	lods	dword [esi]
	cmp	eax,0Fh
	jb	predefined_label
	je	reserved_word_used_as_symbol
	mov	ebx,eax
	mov	ax,[current_pass]
	mov	[ebx+18],ax
	or	byte [ebx+8],8
	test	byte [ebx+8],1
	jz	label_undefined
	cmp	ax,[ebx+16]
	je	label_defined
	test	byte [ebx+8],4
	jnz	label_undefined
	test	byte [ebx+9],1
	jz	label_defined
	mov	eax,[ebx]
	sub	eax,dword [adjustment]
	stos	dword [edi]
	mov	eax,[ebx+4]
	sbb	eax,dword [adjustment+4]
	stos	dword [edi]
	mov	eax,dword [adjustment]
	or	eax,dword [adjustment+4]
	jz	got_label
	or	[next_pass_needed],-1
	jmp	got_label
      label_defined:
	mov	eax,[ebx]
	stos	dword [edi]
	mov	eax,[ebx+4]
	stos	dword [edi]
      got_label:
	mov	al,[ebx+11]
	mov	[edi-8+12],al
	mov	eax,[ebx+12]
	mov	[edi-8+8],eax
	mov	eax,[ebx+20]
	mov	[edi-8+16],eax
	add	edi,0Ch
	mov	al,[ebx+10]
	or	al,al
	jz	calculation_loop
	cmp	[size_override],-1
	je	calculation_loop
	cmp	[size_override],0
	je	check_size
	cmp	[operand_size],0
	jne	calculation_loop
	mov	[operand_size],al
	jmp	calculation_loop
      check_size:
	xchg	[operand_size],al
	or	al,al
	jz	calculation_loop
	cmp	al,[operand_size]
	jne	operand_sizes_do_not_match
	jmp	calculation_loop
      current_offset_label:
	mov	al,[labels_type]
	mov	[edi+12],al
	mov	eax,[org_symbol]
	mov	[edi+16],eax
	mov	eax,[current_offset]
	xor	edx,edx
	sub	eax,dword [org_origin]
	sbb	edx,dword [org_origin+4]
	stos	dword [edi]
	mov	eax,edx
	stos	dword [edi]
	mov	eax,[org_registers]
	stos	dword [edi]
	add	edi,8
	jmp	calculation_loop
      org_origin_label:
	mov	al,[labels_type]
	mov	[edi+12],al
	mov	eax,[org_symbol]
	mov	[edi+16],eax
	mov	eax,[org_start]
	xor	edx,edx
	sub	eax,dword [org_origin]
	sbb	edx,dword [org_origin+4]
	stos	dword [edi]
	mov	eax,edx
	stos	dword [edi]
	mov	eax,[org_registers]
	stos	dword [edi]
	add	edi,8
	jmp	calculation_loop
      counter_label:
	mov	eax,[counter]
      make_dword_label_value:
	stos	dword [edi]
	xor	eax,eax
	stos	dword [edi]
	add	edi,0Ch
	jmp	calculation_loop
      timestamp_label:
	call	make_timestamp
	jmp	make_dword_label_value
      predefined_label:
	or	eax,eax
	jz	current_offset_label
	cmp	eax,1
	je	counter_label
	cmp	eax,2
	je	timestamp_label
	cmp	eax,3
	je	org_origin_label
      label_undefined:
	cmp	[current_pass],1
	ja	undefined_value
      force_next_pass:
	or	[next_pass_needed],-1
      undefined_value:
	mov	byte [edi+12],0
	or	[value_undefined],-1
	xor	eax,eax
	stos	dword [edi]
	stos	dword [edi]
	add	edi,0Ch
	cmp	[error_line],0
	jne	calculation_loop
	mov	eax,[current_line]
	mov	[error_line],eax
	mov	[error],undefined_symbol
	jmp	calculation_loop
      calculate_add:
	mov	ecx,[ebx+16]
	cmp	byte [edi+12],0
	je	add_values
	mov	ecx,[edi+16]
	cmp	byte [ebx+12],0
	je	add_values
	cmp	[error_line],0
	jne	add_values
	mov	eax,[current_line]
	mov	[error_line],eax
	mov	[error],invalid_use_of_symbol
      add_values:
	mov	al,[edi+12]
	or	[ebx+12],al
	mov	[ebx+16],ecx
	mov	eax,[edi]
	add	[ebx],eax
	mov	eax,[edi+4]
	adc	[ebx+4],eax
	or	dx,dx
	jz	calculation_loop
	push	esi
	mov	esi,ebx
	lea	ebx,[edi+10]
	mov	cl,[edi+8]
	call	add_register
	lea	ebx,[edi+11]
	mov	cl,[edi+9]
	call	add_register
	pop	esi
	jmp	calculation_loop
      add_register:
	or	cl,cl
	jz	add_register_done
      add_register_start:
	cmp	[esi+8],cl
	jne	add_in_second_slot
	mov	al,[ebx]
	add	[esi+10],al
	jnz	add_register_done
	mov	byte [esi+8],0
	ret
      add_in_second_slot:
	cmp	[esi+9],cl
	jne	create_in_first_slot
	mov	al,[ebx]
	add	[esi+11],al
	jnz	add_register_done
	mov	byte [esi+9],0
	ret
      create_in_first_slot:
	cmp	byte [esi+8],0
	jne	create_in_second_slot
	mov	[esi+8],cl
	mov	al,[ebx]
	mov	[esi+10],al
	ret
      create_in_second_slot:
	cmp	byte [esi+9],0
	jne	invalid_expression
	mov	[esi+9],cl
	mov	al,[ebx]
	mov	[esi+11],al
      add_register_done:
	ret
      calculate_sub:
	xor	ah,ah
	mov	ah,[ebx+12]
	mov	al,[edi+12]
	or	al,al
	jz	sub_values
	cmp	al,ah
	jne	invalid_sub
	xor	ah,ah
	mov	ecx,[edi+16]
	cmp	ecx,[ebx+16]
	jne	invalid_sub
      sub_values:
	mov	[ebx+12],ah
	mov	eax,[edi]
	sub	[ebx],eax
	mov	eax,[edi+4]
	sbb	[ebx+4],eax
	or	dx,dx
	jz	calculation_loop
	push	esi
	mov	esi,ebx
	lea	ebx,[edi+10]
	mov	cl,[edi+8]
	call	sub_register
	lea	ebx,[edi+11]
	mov	cl,[edi+9]
	call	sub_register
	pop	esi
	jmp	calculation_loop
      invalid_sub:
	cmp	[error_line],0
	jne	sub_values
	mov	eax,[current_line]
	mov	[error_line],eax
	mov	[error],invalid_use_of_symbol
	jmp	sub_values
      sub_register:
	or	cl,cl
	jz	add_register_done
	neg	byte [ebx]
	jmp	add_register_start
      calculate_mul:
	or	dx,dx
	jz	mul_start
	cmp	word [ebx+8],0
	jne	mul_start
	mov	eax,[ebx]
	xchg	eax,[edi]
	mov	[ebx],eax
	mov	eax,[ebx+4]
	xchg	eax,[edi+4]
	mov	[ebx+4],eax
	mov	eax,[ebx+8]
	xchg	eax,[edi+8]
	mov	[ebx+8],eax
	mov	eax,[ebx+12]
	xchg	eax,[edi+12]
	mov	[ebx+12],eax
      mul_start:
	push	esi edx
	mov	esi,ebx
	xor	bl,bl
	bt	dword [esi+4],31
	jnc	mul_first_sign_ok
	not	dword [esi]
	not	dword [esi+4]
	add	dword [esi],1
	adc	dword [esi+4],0
	not	bl
      mul_first_sign_ok:
	bt	dword [edi+4],31
	jnc	mul_second_sign_ok
	not	dword [edi]
	not	dword [edi+4]
	add	dword [edi],1
	adc	dword [edi+4],0
	not	bl
      mul_second_sign_ok:
	cmp	dword [esi+4],0
	jz	mul_numbers
	cmp	dword [edi+4],0
	jnz	value_out_of_range
      mul_numbers:
	mov	eax,[esi+4]
	mul	dword [edi]
	or	edx,edx
	jnz	value_out_of_range
	mov	ecx,eax
	mov	eax,[esi]
	mul	dword [edi+4]
	or	edx,edx
	jnz	value_out_of_range
	add	ecx,eax
	jc	value_out_of_range
	mov	eax,[esi]
	mul	dword [edi]
	add	edx,ecx
	jc	value_out_of_range
	test	edx,1 shl 31
	jnz	value_out_of_range
	mov	[esi],eax
	mov	[esi+4],edx
	or	bl,bl
	jz	mul_ok
	not	dword [esi]
	not	dword [esi+4]
	add	dword [esi],1
	adc	dword [esi+4],0
      mul_ok:
	pop	edx
	or	dx,dx
	jz	mul_calculated
	cmp	word [edi+8],0
	jne	invalid_value
	cmp	byte [esi+8],0
	je	mul_first_register_ok
	mov	al,[edi]
	cbw
	cwde
	cdq
	cmp	edx,[edi+4]
	jne	value_out_of_range
	cmp	eax,[edi]
	jne	value_out_of_range
	imul	byte [esi+10]
	mov	dl,ah
	cbw
	cmp	ah,dl
	jne	value_out_of_range
	mov	[esi+10],al
	or	al,al
	jnz	mul_first_register_ok
	mov	[esi+8],al
      mul_first_register_ok:
	cmp	byte [esi+9],0
	je	mul_calculated
	mov	al,[edi]
	cbw
	cwde
	cdq
	cmp	edx,[edi+4]
	jne	value_out_of_range
	cmp	eax,[edi]
	jne	value_out_of_range
	imul	byte [esi+11]
	mov	dl,ah
	cbw
	cmp	ah,dl
	jne	value_out_of_range
	mov	[esi+11],al
	or	al,al
	jnz	mul_calculated
	mov	[esi+9],al
      mul_calculated:
	pop	esi
	jmp	calculation_loop
      calculate_div:
	push	esi edx
	mov	esi,ebx
	call	div_64
	pop	edx
	or	dx,dx
	jz	div_calculated
	cmp	byte [esi+8],0
	je	div_first_register_ok
	mov	al,[edi]
	cbw
	cwde
	cdq
	cmp	edx,[edi+4]
	jne	value_out_of_range
	cmp	eax,[edi]
	jne	value_out_of_range
	or	al,al
	jz	value_out_of_range
	mov	al,[esi+10]
	cbw
	idiv	byte [edi]
	or	ah,ah
	jnz	invalid_use_of_symbol
	mov	[esi+10],al
      div_first_register_ok:
	cmp	byte [esi+9],0
	je	div_calculated
	mov	al,[edi]
	cbw
	cwde
	cdq
	cmp	edx,[edi+4]
	jne	value_out_of_range
	cmp	eax,[edi]
	jne	value_out_of_range
	or	al,al
	jz	value_out_of_range
	mov	al,[esi+11]
	cbw
	idiv	byte [edi]
	or	ah,ah
	jnz	invalid_use_of_symbol
	mov	[esi+11],al
      div_calculated:
	pop	esi
	jmp	calculation_loop
      calculate_mod:
	push	esi
	mov	esi,ebx
	call	div_64
	mov	[esi],eax
	mov	[esi+4],edx
	pop	esi
	jmp	calculation_loop
      calculate_and:
	mov	eax,[edi]
	and	[ebx],eax
	mov	eax,[edi+4]
	and	[ebx+4],eax
	jmp	calculation_loop
      calculate_or:
	mov	eax,[edi]
	or	[ebx],eax
	mov	eax,[edi+4]
	or	[ebx+4],eax
	jmp	calculation_loop
      calculate_xor:
	mov	eax,[edi]
	xor	[ebx],eax
	mov	eax,[edi+4]
	xor	[ebx+4],eax
	jmp	calculation_loop
      shr_negative:
	not	dword [edi]
	not	dword [edi+4]
	add	dword [edi],1
	adc	dword [edi+4],0
      calculate_shl:
	mov	eax,dword [edi+4]
	bt	eax,31
	jc	shl_negative
	or	eax,eax
	jnz	zero_value
	mov	ecx,[edi]
	cmp	ecx,64
	jae	zero_value
	cmp	ecx,32
	jae	shl_high
	mov	edx,[ebx+4]
	mov	eax,[ebx]
	shld	edx,eax,cl
	shl	eax,cl
	mov	[ebx],eax
	mov	[ebx+4],edx
	jmp	calculation_loop
      shl_high:
	sub	cl,32
	mov	eax,[ebx]
	shl	eax,cl
	mov	[ebx+4],eax
	mov	dword [ebx],0
	jmp	calculation_loop
      shl_negative:
	not	dword [edi]
	not	dword [edi+4]
	add	dword [edi],1
	adc	dword [edi+4],0
      calculate_shr:
	mov	eax,dword [edi+4]
	bt	eax,31
	jc	shr_negative
	or	eax,eax
	jnz	zero_value
	mov	ecx,[edi]
	cmp	ecx,64
	jae	zero_value
	cmp	ecx,32
	jae	shr_high
	mov	edx,[ebx+4]
	mov	eax,[ebx]
	shrd	eax,edx,cl
	shr	edx,cl
	mov	[ebx],eax
	mov	[ebx+4],edx
	jmp	calculation_loop
      shr_high:
	sub	cl,32
	mov	eax,[ebx+4]
	shr	eax,cl
	mov	[ebx],eax
	mov	dword [ebx+4],0
	jmp	calculation_loop
      zero_value:
	mov	dword [ebx],0
	mov	dword [ebx+4],0
	jmp	calculation_loop
      calculate_not:
	cmp	word [edi+8],0
	jne	invalid_expression
	cmp	byte [edi+12],0
	je	not_ok
	cmp	[error_line],0
	jne	not_ok
	mov	eax,[current_line]
	mov	[error_line],eax
	mov	[error],invalid_use_of_symbol
      not_ok:
	cmp	[value_size],1
	je	not_byte
	cmp	[value_size],2
	je	not_word
	cmp	[value_size],4
	je	not_dword
	cmp	[value_size],6
	je	not_pword
      not_qword:
	not	dword [edi]
	not	dword [edi+4]
	add	edi,14h
	jmp	calculation_loop
      not_byte:
	cmp	dword [edi+4],0
	jne	not_qword
	cmp	word [edi+2],0
	jne	not_qword
	cmp	byte [edi+1],0
	jne	not_qword
	not	byte [edi]
	add	edi,14h
	jmp	calculation_loop
      not_word:
	cmp	dword [edi+4],0
	jne	not_qword
	cmp	word [edi+2],0
	jne	not_qword
	not	word [edi]
	add	edi,14h
	jmp	calculation_loop
      not_dword:
	cmp	dword [edi+4],0
	jne	not_qword
	not	dword [edi]
	add	edi,14h
	jmp	calculation_loop
      not_pword:
	cmp	word [edi+6],0
	jne	not_qword
	not	dword [edi]
	not	word [edi+4]
	add	edi,14h
	jmp	calculation_loop
      calculate_neg:
	cmp	word [edi+8],0
	jne	invalid_expression
	cmp	byte [edi+12],0
	je	neg_ok
	cmp	[error_line],0
	jne	neg_ok
	mov	eax,[current_line]
	mov	[error_line],eax
	mov	[error],invalid_use_of_symbol
      neg_ok:
	mov	eax,[edi]
	mov	edx,[edi+4]
	mov	dword [edi],0
	mov	dword [edi+4],0
	sub	[edi],eax
	sbb	[edi+4],edx
	add	edi,14h
	jmp	calculation_loop
      calculate_rva:
	cmp	word [edi+8],0
	jne	invalid_expression
	cmp	[output_format],5
	je	calculate_gotoff
	cmp	[output_format],3
	jne	invalid_expression
	test	[format_flags],8
	jnz	pe64_rva
	mov	al,2
	bt	[resolver_flags],0
	jc	rva_type_ok
	xor	al,al
      rva_type_ok:
	cmp	byte [edi+12],al
	je	rva_ok
	cmp	[error_line],0
	jne	rva_ok
	mov	eax,[current_line]
	mov	[error_line],eax
	mov	[error],invalid_use_of_symbol
      rva_ok:
	mov	byte [edi+12],0
	mov	eax,[code_start]
	mov	eax,[eax+34h]
	cdq
	sub	[edi],eax
	sbb	[edi+4],edx
	add	edi,14h
	jmp	calculation_loop
      pe64_rva:
	mov	al,4
	bt	[resolver_flags],0
	jc	pe64_rva_type_ok
	xor	al,al
      pe64_rva_type_ok:
	cmp	byte [edi+12],al
	je	pe64_rva_ok
	cmp	[error_line],0
	jne	pe64_rva_ok
	mov	eax,[current_line]
	mov	[error_line],eax
	mov	[error],invalid_use_of_symbol
      pe64_rva_ok:
	mov	byte [edi+12],0
	mov	eax,[code_start]
	mov	edx,[eax+34h]
	mov	eax,[eax+30h]
	sub	[edi],eax
	sbb	[edi+4],edx
	add	edi,14h
	jmp	calculation_loop
      calculate_gotoff:
	test	[format_flags],8+1
	jnz	invalid_expression
	mov	dl,5
	cmp	byte [edi+12],2
	je	change_value_type
      incorrect_change_of_value_type:
	cmp	[error_line],0
	jne	change_value_type
	mov	eax,[current_line]
	mov	[error_line],eax
	mov	[error],invalid_use_of_symbol
      change_value_type:
	mov	byte [edi+12],dl
	add	edi,14h
	jmp	calculation_loop
      calculate_plt:
	cmp	word [edi+8],0
	jne	invalid_expression
	cmp	[output_format],5
	jne	invalid_expression
	test	[format_flags],1
	jnz	invalid_expression
	mov	dl,6
	mov	dh,2
	test	[format_flags],8
	jz	check_value_for_plt
	mov	dh,4
      check_value_for_plt:
	mov	eax,[edi]
	or	eax,[edi+4]
	jnz	incorrect_change_of_value_type
	cmp	byte [edi+12],dh
	jne	incorrect_change_of_value_type
	mov	eax,[edi+16]
	cmp	byte [eax],81h
	jne	incorrect_change_of_value_type
	jmp	change_value_type
      div_64:
	xor	ebx,ebx
	cmp	dword [edi],0
	jne	divider_ok
	cmp	dword [edi+4],0
	jne	divider_ok
	cmp	[next_pass_needed],0
	je	value_out_of_range
	jmp	div_done
      divider_ok:
	bt	dword [esi+4],31
	jnc	div_first_sign_ok
	not	dword [esi]
	not	dword [esi+4]
	add	dword [esi],1
	adc	dword [esi+4],0
	not	bx
      div_first_sign_ok:
	bt	dword [edi+4],31
	jnc	div_second_sign_ok
	not	dword [edi]
	not	dword [edi+4]
	add	dword [edi],1
	adc	dword [edi+4],0
	not	bl
      div_second_sign_ok:
	cmp	dword [edi+4],0
	jne	div_high
	mov	ecx,[edi]
	mov	eax,[esi+4]
	xor	edx,edx
	div	ecx
	mov	[esi+4],eax
	mov	eax,[esi]
	div	ecx
	mov	[esi],eax
	mov	eax,edx
	xor	edx,edx
	jmp	div_done
      div_high:
	mov	eax,[esi+4]
	xor	edx,edx
	div	dword [edi+4]
	mov	ebx,[esi]
	mov	[esi],eax
	mov	dword [esi+4],0
	mov	ecx,edx
	mul	dword [edi]
      div_high_loop:
	cmp	ecx,edx
	ja	div_high_done
	jb	div_high_large_correction
	cmp	ebx,eax
	jae	div_high_done
      div_high_correction:
	dec	dword [esi]
	sub	eax,[edi]
	sbb	edx,[edi+4]
	jnc	div_high_loop
      div_high_done:
	sub	ebx,eax
	sbb	ecx,edx
	mov	edx,ecx
	mov	eax,ebx
	ret
      div_high_large_correction:
	push	eax edx
	mov	eax,edx
	sub	eax,ecx
	xor	edx,edx
	div	dword [edi+4]
	shr	eax,1
	jz	div_high_small_correction
	sub	[esi],eax
	push	eax
	mul	dword [edi+4]
	sub	dword [esp+4],eax
	pop	eax
	mul	dword [edi]
	sub	dword [esp+4],eax
	sbb	dword [esp],edx
	pop	edx eax
	jmp	div_high_loop
      div_high_small_correction:
	pop	edx eax
	jmp	div_high_correction
      div_done:
	or	bh,bh
	jz	remainder_ok
	not	eax
	not	edx
	add	eax,1
	adc	edx,0
      remainder_ok:
	or	bl,bl
	jz	div_ok
	not	dword [esi]
	not	dword [esi+4]
	add	dword [esi],1
	adc	dword [esi+4],0
      div_ok:
	ret
      convert_fp:
	inc	esi
	mov	word [edi+8],0
	mov	byte [edi+12],0
	mov	al,[value_size]
	cmp	al,4
	je	convert_fp_dword
	cmp	al,8
	je	convert_fp_qword
	jmp	invalid_value
      convert_fp_dword:
	xor	eax,eax
	cmp	word [esi+8],8000h
	je	fp_dword_store
	mov	bx,[esi+8]
	mov	eax,[esi+4]
	shl	eax,1
	shr	eax,9
	jnc	fp_dword_ok
	inc	eax
	bt	eax,23
	jnc	fp_dword_ok
	and	eax,1 shl 23 - 1
	inc	bx
	shr	eax,1
      fp_dword_ok:
	add	bx,7Fh
	cmp	bx,100h
	jae	value_out_of_range
	shl	ebx,23
	or	eax,ebx
      fp_dword_store:
	mov	bl,[esi+11]
	shl	ebx,31
	or	eax,ebx
	mov	[edi],eax
	xor	eax,eax
	mov	[edi+4],eax
	add	esi,13
	ret
      convert_fp_qword:
	xor	eax,eax
	xor	edx,edx
	cmp	word [esi+8],8000h
	je	fp_qword_store
	mov	bx,[esi+8]
	mov	eax,[esi]
	mov	edx,[esi+4]
	add	eax,eax
	adc	edx,edx
	mov	ecx,edx
	shr	edx,12
	shrd	eax,ecx,12
	jnc	fp_qword_ok
	add	eax,1
	adc	edx,0
	bt	edx,20
	jnc	fp_qword_ok
	and	edx,1 shl 20 - 1
	inc	bx
	shr	edx,1
	rcr	eax,1
      fp_qword_ok:
	add	bx,3FFh
	cmp	bx,800h
	jae	value_out_of_range
	shl	ebx,20
	or	edx,ebx
      fp_qword_store:
	mov	bl,[esi+11]
	shl	ebx,31
	or	edx,ebx
	mov	[edi],eax
	mov	[edi+4],edx
	add	esi,13
	ret
      get_string_value:
	inc	esi
	lods	dword [esi]
	mov	ecx,eax
	cmp	ecx,8
	ja	value_out_of_range
	mov	edx,edi
	xor	eax,eax
	stos	dword [edi]
	stos	dword [edi]
	mov	edi,edx
	rep	movs byte [edi],[esi]
	mov	edi,edx
	inc	esi
	mov	word [edi+8],0
	mov	byte [edi+12],0
	ret
 
get_byte_value:
	mov	[value_size],1
	mov	[size_override],-1
	call	calculate_expression
	mov	eax,[edi+16]
	mov	[symbol_identifier],eax
	mov	[value_type],0
	cmp	word [edi+8],0
	jne	invalid_value
	cmp	byte [edi+12],0
	je	check_byte_value
	cmp	[error_line],0
	jne	check_byte_value
	mov	eax,[current_line]
	mov	[error_line],eax
	mov	[error],invalid_use_of_symbol
      check_byte_value:
	mov	eax,[edi]
	mov	edx,[edi+4]
	or	edx,edx
	jz	byte_positive
	cmp	edx,-1
	jne	range_exceeded
	cmp	eax,-80h
	jb	range_exceeded
	ret
      byte_positive:
	cmp	eax,100h
	jae	range_exceeded
      return_byte_value:
	ret
      range_exceeded:
	xor	eax,eax
	xor	edx,edx
	cmp	[error_line],0
	jne	return_byte_value
	mov	ecx,[current_line]
	mov	[error_line],ecx
	mov	[error],value_out_of_range
	ret
get_word_value:
	mov	[value_size],2
	mov	[size_override],-1
	call	calculate_expression
	cmp	word [edi+8],0
	jne	invalid_value
	mov	eax,[edi+16]
	mov	[symbol_identifier],eax
	mov	al,[edi+12]
	mov	[value_type],al
	cmp	al,2
	jb	check_word_value
	cmp	[error_line],0
	jne	check_word_value
	mov	eax,[current_line]
	mov	[error_line],eax
	mov	[error],invalid_use_of_symbol
      check_word_value:
	mov	eax,[edi]
	mov	edx,[edi+4]
	or	edx,edx
	jz	word_positive
	cmp	edx,-1
	jne	range_exceeded
	cmp	eax,-8000h
	jb	range_exceeded
	ret
      word_positive:
	cmp	eax,10000h
	jae	range_exceeded
	ret
get_dword_value:
	mov	[value_size],4
	mov	[size_override],-1
	call	calculate_expression
	cmp	word [edi+8],0
	jne	invalid_value
	mov	eax,[edi+16]
	mov	[symbol_identifier],eax
	mov	al,[edi+12]
	mov	[value_type],al
	cmp	al,4
	jne	check_dword_value
	mov	[value_type],2
	mov	eax,[edi]
	cdq
	cmp	edx,[edi+4]
	jne	range_exceeded
	ret
      check_dword_value:
	mov	eax,[edi]
	mov	edx,[edi+4]
	or	edx,edx
	jz	dword_positive
	cmp	edx,-1
	jne	range_exceeded
	bt	eax,31
	jnc	range_exceeded
      dword_positive:
	ret
get_pword_value:
	mov	[value_size],6
	mov	[size_override],-1
	call	calculate_expression
	mov	eax,[edi+16]
	mov	[symbol_identifier],eax
	cmp	word [edi+8],0
	jne	invalid_value
	mov	al,[edi+12]
	mov	[value_type],al
	cmp	al,4
	jne	check_pword_value
	cmp	[error_line],0
	jne	check_pword_value
	mov	eax,[current_line]
	mov	[error_line],eax
	mov	[error],invalid_use_of_symbol
      check_pword_value:
	mov	eax,[edi]
	mov	edx,[edi+4]
	cmp	edx,10000h
	jge	range_exceeded
	cmp	edx,-8000h
	jl	range_exceeded
	ret
get_qword_value:
	mov	[value_size],8
	mov	[size_override],-1
	call	calculate_expression
	cmp	word [edi+8],0
	jne	invalid_value
	mov	eax,[edi+16]
	mov	[symbol_identifier],eax
	mov	al,[edi+12]
	mov	[value_type],al
      check_qword_value:
	mov	eax,[edi]
	mov	edx,[edi+4]
	ret
get_value:
	mov	[operand_size],0
	lods	byte [esi]
	call	get_size_operator
	cmp	al,'('
	jne	invalid_value
	mov	al,[operand_size]
	cmp	al,1
	je	value_byte
	cmp	al,2
	je	value_word
	cmp	al,4
	je	value_dword
	cmp	al,6
	je	value_pword
	cmp	al,8
	je	value_qword
	or	al,al
	jnz	invalid_value
      value_qword:
	call	get_qword_value
	ret
      value_pword:
	call	get_pword_value
	movzx	edx,dx
	ret
      value_dword:
	call	get_dword_value
	xor	edx,edx
	ret
      value_word:
	call	get_word_value
	xor	edx,edx
	movzx	eax,ax
	ret
      value_byte:
	call	get_byte_value
	xor	edx,edx
	movzx	eax,al
	ret
get_address_word_value:
	mov	[address_size],2
	mov	[value_size],2
	jmp	calculate_address
get_address_dword_value:
	mov	[address_size],4
	mov	[value_size],4
	jmp	calculate_address
get_address_qword_value:
	mov	[address_size],8
	mov	[value_size],8
	jmp	calculate_address
get_address_value:
	mov	[address_size],0
	mov	[value_size],8
      calculate_address:
	cmp	byte [esi],'.'
	je	invalid_address
	call	calculate_expression
	mov	eax,[edi+16]
	mov	[address_symbol],eax
	mov	al,[edi+12]
	mov	[value_type],al
	cmp	al,5
	je	gotoff_address
	ja	invalid_use_of_symbol
	test	al,1
	jnz	invalid_use_of_symbol
	or	al,al
	jz	address_size_ok
	shl	al,5
	jmp	address_symbol_ok
      gotoff_address:
	mov	al,40h
      address_symbol_ok:
	mov	ah,[address_size]
	or	[address_size],al
	shr	al,4
	or	ah,ah
	jz	address_size_ok
	cmp	al,ah
	je	address_size_ok
	cmp	ax,0804h
	jne	address_sizes_do_not_agree
	mov	[value_type],2
	mov	eax,[edi]
	cdq
	cmp	edx,[edi+4]
	je	address_size_ok
	cmp	[error_line],0
	jne	address_size_ok
	mov	ecx,[current_line]
	mov	[error_line],ecx
	mov	[error],value_out_of_range
      address_size_ok:
	xor	ebx,ebx
	xor	ecx,ecx
	mov	cl,[value_type]
	shl	ecx,16
	mov	ch,[address_size]
	cmp	word [edi+8],0
	je	check_immediate_address
	mov	al,[edi+8]
	mov	dl,[edi+10]
	call	get_address_register
	mov	al,[edi+9]
	mov	dl,[edi+11]
	call	get_address_register
	mov	ax,bx
	shr	ah,4
	shr	al,4
	or	bh,bh
	jz	check_address_registers
	or	bl,bl
	jz	check_address_registers
	cmp	al,ah
	jne	invalid_address
      check_address_registers:
	or	al,ah
	mov	ah,[address_size]
	and	ah,0Fh
	jz	address_registers_sizes_ok
	cmp	al,ah
	jne	address_sizes_do_not_match
      address_registers_sizes_ok:
	cmp	al,4
	je	sib_allowed
	cmp	al,8
	je	sib_allowed
	cmp	al,0Fh
	je	check_ip_relative_address
	or	cl,cl
	jz	check_word_value
	cmp	cl,1
	je	check_word_value
	jmp	invalid_address
      address_sizes_do_not_match:
	cmp	al,0Fh
	jne	invalid_address
	mov	al,bh
	and	al,0Fh
	cmp	al,ah
	jne	invalid_address
      check_ip_relative_address:
	cmp	bh,0F4h
	je	check_dword_value
	cmp	bh,0F8h
	jne	invalid_address
	mov	eax,[edi]
	cdq
	cmp	edx,[edi+4]
	jne	range_exceeded
	ret
      get_address_register:
	or	al,al
	jz	address_register_ok
	cmp	dl,1
	jne	scaled_register
	or	bh,bh
	jnz	scaled_register
	mov	bh,al
      address_register_ok:
	ret
      scaled_register:
	or	bl,bl
	jnz	invalid_address
	mov	bl,al
	mov	cl,dl
	jmp	address_register_ok
      sib_allowed:
	or	bh,bh
	jnz	check_index_scale
	cmp	cl,2
	je	special_index_scale
	cmp	cl,3
	je	special_index_scale
	cmp	cl,5
	je	special_index_scale
	cmp	cl,9
	je	special_index_scale
      check_index_scale:
	or	cl,cl
	jz	check_immediate_address
	cmp	cl,1
	je	check_immediate_address
	cmp	cl,2
	je	check_immediate_address
	cmp	cl,4
	je	check_immediate_address
	cmp	cl,8
	je	check_immediate_address
	jmp	invalid_address
      special_index_scale:
	mov	bh,bl
	dec	cl
      check_immediate_address:
	mov	al,[address_size]
	and	al,0Fh
	cmp	al,2
	je	check_word_value
	cmp	al,4
	je	check_dword_value
	cmp	al,8
	je	check_qword_value
	or	al,al
	jnz	invalid_value
	cmp	[code_type],64
	jne	check_dword_value
	jmp	check_qword_value
calculate_relative_offset:
	cmp	[value_undefined],0
	jne	relative_offset_ok
	test	bh,bh
	setne	ch
	cmp	bx,word [org_registers]
	je	origin_registers_ok
	xchg	bh,bl
	xchg	ch,cl
	cmp	bx,word [org_registers]
	jne	invalid_value
      origin_registers_ok:
	cmp	cx,word [org_registers+2]
	jne	invalid_value
	add	eax,dword [org_origin]
	adc	edx,dword [org_origin+4]
	sub	eax,edi
	sbb	edx,0
	mov	bl,[value_type]
	or	bl,bl
	je	relative_offset_ok
	test	bl,1
	jnz	invalid_use_of_symbol
	cmp	bl,6
	je	plt_relative_offset
	cmp	bl,[labels_type]
	jne	invalid_use_of_symbol
	mov	[value_type],0
	mov	ecx,[address_symbol]
	mov	[symbol_identifier],ecx
	cmp	ecx,[org_symbol]
	je	relative_offset_ok
	mov	[value_type],3
      relative_offset_ok:
	ret
      plt_relative_offset:
	mov	[value_type],7
	ret
 
preevaluate_logical_expression:
	xor	al,al
  preevaluate_embedded_logical_expression:
	mov	[logical_value_wrapping],al
	push	edi
	call	preevaluate_logical_value
      preevaluation_loop:
	cmp	al,0FFh
	je	invalid_logical_expression
	mov	dl,[esi]
	inc	esi
	cmp	dl,'|'
	je	preevaluate_or
	cmp	dl,'&'
	je	preevaluate_and
	cmp	dl,'}'
	je	preevaluation_done
	or	dl,dl
	jnz	invalid_logical_expression
      preevaluation_done:
	pop	edx
	dec	esi
	ret
      preevaluate_or:
	cmp	al,'1'
	je	quick_true
	cmp	al,'0'
	je	leave_only_following
	push	edi
	mov	al,dl
	stos	byte [edi]
	call	preevaluate_logical_value
	pop	ebx
	cmp	al,'0'
	je	leave_only_preceding
	cmp	al,'1'
	jne	preevaluation_loop
	stos	byte [edi]
	xor	al,al
	jmp	preevaluation_loop
      preevaluate_and:
	cmp	al,'0'
	je	quick_false
	cmp	al,'1'
	je	leave_only_following
	push	edi
	mov	al,dl
	stos	byte [edi]
	call	preevaluate_logical_value
	pop	ebx
	cmp	al,'1'
	je	leave_only_preceding
	cmp	al,'0'
	jne	preevaluation_loop
	stos	byte [edi]
	xor	al,al
	jmp	preevaluation_loop
      leave_only_following:
	mov	edi,[esp]
	call	preevaluate_logical_value
	jmp	preevaluation_loop
      leave_only_preceding:
	mov	edi,ebx
	xor	al,al
	jmp	preevaluation_loop
      quick_true:
	call	skip_logical_value
	jc	invalid_logical_expression
	mov	edi,[esp]
	mov	al,'1'
	jmp	preevaluation_loop
      quick_false:
	call	skip_logical_value
	jc	invalid_logical_expression
	mov	edi,[esp]
	mov	al,'0'
	jmp	preevaluation_loop
      invalid_logical_expression:
	pop	edi
	mov	esi,edi
	mov	al,0FFh
	stos	byte [edi]
	ret
  skip_logical_value:
	cmp	byte [esi],'~'
	jne	negation_skipped
	inc	esi
	jmp	skip_logical_value
      negation_skipped:
	mov	al,[esi]
	cmp	al,'{'
	jne	skip_simple_logical_value
	inc	esi
	xchg	al,[logical_value_wrapping]
	push	eax
      skip_logical_expression:
	call	skip_logical_value
	lods	byte [esi]
	or	al,al
	jz	wrongly_structured_logical_expression
	cmp	al,0Fh
	je	wrongly_structured_logical_expression
	cmp	al,'|'
	je	skip_logical_expression
	cmp	al,'&'
	je	skip_logical_expression
	cmp	al,'}'
	jne	wrongly_structured_logical_expression
	pop	eax
	mov	[logical_value_wrapping],al
      logical_value_skipped:
	clc
	ret
      wrongly_structured_logical_expression:
	pop	eax
	stc
	ret
      skip_simple_logical_value:
	mov	[logical_value_parentheses],0
      find_simple_logical_value_end:
	mov	al,[esi]
	or	al,al
	jz	logical_value_skipped
	cmp	al,0Fh
	je	logical_value_skipped
	cmp	al,'|'
	je	logical_value_skipped
	cmp	al,'&'
	je	logical_value_skipped
	cmp	al,'{'
	je	skip_logical_value_internal_parenthesis
	cmp	al,'}'
	jne	skip_logical_value_symbol
	sub	[logical_value_parentheses],1
	jnc	skip_logical_value_symbol
	cmp	[logical_value_wrapping],'{'
	jne	skip_logical_value_symbol
	jmp	logical_value_skipped
      skip_logical_value_internal_parenthesis:
	inc	[logical_value_parentheses]
      skip_logical_value_symbol:
	call	skip_symbol
	jmp	find_simple_logical_value_end
  preevaluate_logical_value:
	mov	ebp,edi
      preevaluate_negation:
	cmp	byte [esi],'~'
	jne	preevaluate_negation_ok
	movs	byte [edi],[esi]
	jmp	preevaluate_negation
      preevaluate_negation_ok:
	mov	ebx,esi
	cmp	byte [esi],'{'
	jne	preevaluate_simple_logical_value
	lods	byte [esi]
	stos	byte [edi]
	push	ebp
	mov	dl,[logical_value_wrapping]
	push	edx
	call	preevaluate_embedded_logical_expression
	pop	edx
	mov	[logical_value_wrapping],dl
	pop	ebp
	cmp	al,0FFh
	je	invalid_logical_value
	cmp	byte [esi],'}'
	jne	invalid_logical_value
	or	al,al
	jnz	preevaluated_expression_value
	movs	byte [edi],[esi]
	ret
      preevaluated_expression_value:
	inc	esi
	lea	edx,[edi-1]
	sub	edx,ebp
	test	edx,1
	jz	expression_negation_ok
	xor	al,1
      expression_negation_ok:
	mov	edi,ebp
	ret
      invalid_logical_value:
	mov	edi,ebp
	mov	al,0FFh
	ret
      preevaluate_simple_logical_value:
	xor	edx,edx
	mov	[logical_value_parentheses],edx
      find_logical_value_boundaries:
	mov	al,[esi]
	or	al,al
	jz	logical_value_boundaries_found
	cmp	al,'{'
	je	logical_value_internal_parentheses
	cmp	al,'}'
	je	logical_value_boundaries_parenthesis_close
	cmp	al,'|'
	je	logical_value_boundaries_found
	cmp	al,'&'
	je	logical_value_boundaries_found
	or	edx,edx
	jnz	next_symbol_in_logical_value
	cmp	al,0F0h
	je	preevaluable_logical_operator
	cmp	al,0F7h
	je	preevaluable_logical_operator
	cmp	al,0F6h
	jne	next_symbol_in_logical_value
      preevaluable_logical_operator:
	mov	edx,esi
      next_symbol_in_logical_value:
	call	skip_symbol
	jmp	find_logical_value_boundaries
      logical_value_internal_parentheses:
	inc	[logical_value_parentheses]
	jmp	next_symbol_in_logical_value
      logical_value_boundaries_parenthesis_close:
	sub	[logical_value_parentheses],1
	jnc	next_symbol_in_logical_value
	cmp	[logical_value_wrapping],'{'
	jne	next_symbol_in_logical_value
      logical_value_boundaries_found:
	or	edx,edx
	jz	non_preevaluable_logical_value
	mov	al,[edx]
	cmp	al,0F0h
	je	compare_symbols
	cmp	al,0F7h
	je	compare_symbol_types
	cmp	al,0F6h
	je	scan_symbols_list
      non_preevaluable_logical_value:
	mov	ecx,esi
	mov	esi,ebx
	sub	ecx,esi
	jz	invalid_logical_value
	cmp	esi,edi
	je	leave_logical_value_intact
	rep	movs byte [edi],[esi]
	xor	al,al
	ret
      leave_logical_value_intact:
	add	edi,ecx
	add	esi,ecx
	xor	al,al
	ret
      compare_symbols:
	lea	ecx,[esi-1]
	sub	ecx,edx
	mov	eax,edx
	sub	eax,ebx
	cmp	ecx,eax
	jne	preevaluated_false
	push	esi edi
	mov	esi,ebx
	lea	edi,[edx+1]
	repe	cmps byte [esi],[edi]
	pop	edi esi
	je	preevaluated_true
      preevaluated_false:
	mov	eax,edi
	sub	eax,ebp
	test	eax,1
	jnz	store_true
      store_false:
	mov	edi,ebp
	mov	al,'0'
	ret
      preevaluated_true:
	mov	eax,edi
	sub	eax,ebp
	test	eax,1
	jnz	store_false
      store_true:
	mov	edi,ebp
	mov	al,'1'
	ret
      compare_symbol_types:
	push	esi
	lea	esi,[edx+1]
      type_comparison:
	cmp	esi,[esp]
	je	types_compared
	mov	al,[esi]
	cmp	al,[ebx]
	jne	different_type
	cmp	al,'('
	jne	equal_type
	mov	al,[esi+1]
	mov	ah,[ebx+1]
	cmp	al,ah
	je	equal_type
	or	al,al
	jz	different_type
	or	ah,ah
	jz	different_type
	cmp	al,'.'
	je	different_type
	cmp	ah,'.'
	je	different_type
      equal_type:
	call	skip_symbol
	xchg	esi,ebx
	call	skip_symbol
	xchg	esi,ebx
	jmp	type_comparison
      types_compared:
	pop	esi
	cmp	byte [ebx],0F7h
	jne	preevaluated_false
	jmp	preevaluated_true
      different_type:
	pop	esi
	jmp	preevaluated_false
      scan_symbols_list:
	push	edi esi
	lea	esi,[edx+1]
	sub	edx,ebx
	lods	byte [esi]
	cmp	al,'<'
	jne	invalid_symbols_list
      get_next_from_list:
	mov	edi,esi
      get_from_list:
	cmp	byte [esi],','
	je	compare_in_list
	cmp	byte [esi],'>'
	je	compare_in_list
	cmp	esi,[esp]
	jae	invalid_symbols_list
	call	skip_symbol
	jmp	get_from_list
      compare_in_list:
	mov	ecx,esi
	sub	ecx,edi
	cmp	ecx,edx
	jne	not_equal_length_in_list
	mov	esi,ebx
	repe	cmps byte [esi],[edi]
	mov	esi,edi
	jne	not_equal_in_list
      skip_rest_of_list:
	cmp	byte [esi],'>'
	je	check_list_end
	cmp	esi,[esp]
	jae	invalid_symbols_list
	call	skip_symbol
	jmp	skip_rest_of_list
      check_list_end:
	inc	esi
	cmp	esi,[esp]
	jne	invalid_symbols_list
	pop	esi edi
	jmp	preevaluated_true
      not_equal_in_list:
	add	esi,ecx
      not_equal_length_in_list:
	lods	byte [esi]
	cmp	al,','
	je	get_next_from_list
	cmp	esi,[esp]
	jne	invalid_symbols_list
	pop	esi edi
	jmp	preevaluated_false
      invalid_symbols_list:
	pop	esi edi
	jmp	invalid_logical_value
 
calculate_logical_expression:
	xor	al,al
  calculate_embedded_logical_expression:
	mov	[logical_value_wrapping],al
	call	get_logical_value
      logical_loop:
	cmp	byte [esi],'|'
	je	logical_or
	cmp	byte [esi],'&'
	je	logical_and
	ret
      logical_or:
	inc	esi
	or	al,al
	jnz	logical_value_already_determined
	push	eax
	call	get_logical_value
	pop	ebx
	or	al,bl
	jmp	logical_loop
      logical_and:
	inc	esi
	or	al,al
	jz	logical_value_already_determined
	push	eax
	call	get_logical_value
	pop	ebx
	and	al,bl
	jmp	logical_loop
      logical_value_already_determined:
	push	eax
	call	skip_logical_value
	jc	invalid_expression
	pop	eax
	jmp	logical_loop
  get_logical_value:
	xor	al,al
      check_for_negation:
	cmp	byte [esi],'~'
	jne	negation_ok
	inc	esi
	xor	al,-1
	jmp	check_for_negation
      negation_ok:
	push	eax
	mov	al,[esi]
	cmp	al,'{'
	je	logical_expression
	cmp	al,0FFh
	je	invalid_expression
	cmp	al,88h
	je	check_for_defined
	cmp	al,89h
	je	check_for_used
	cmp	al,'0'
	je	given_false
	cmp	al,'1'
	je	given_true
	call	get_value
	mov	bl,[value_type]
	push	eax edx ebx
	mov	al,[esi]
	or	al,al
	jz	logical_number
	cmp	al,0Fh
	je	logical_number
	cmp	al,'}'
	je	logical_number
	cmp	al,'&'
	je	logical_number
	cmp	al,'|'
	je	logical_number
	inc	esi
	mov	[compare_type],al
	call	get_value
	pop	ebx
	cmp	[next_pass_needed],0
	jne	values_ok
	cmp	bl,[value_type]
	jne	invalid_use_of_symbol
      values_ok:
	pop	ecx ebx
	cmp	[compare_type],'='
	je	check_equal
	cmp	[compare_type],'>'
	je	check_greater
	cmp	[compare_type],'<'
	je	check_less
	cmp	[compare_type],0F1h
	je	check_not_equal
	cmp	[compare_type],0F2h
	je	check_not_less
	cmp	[compare_type],0F3h
	je	check_not_greater
	jmp	invalid_expression
      check_equal:
	cmp	eax,ebx
	jne	return_false
	cmp	edx,ecx
	jne	return_false
	jmp	return_true
      check_greater:
	cmp	edx,ecx
	jl	return_true
	jg	return_false
	cmp	eax,ebx
	jb	return_true
	jae	return_false
      check_less:
	cmp	edx,ecx
	jl	return_false
	jg	return_true
	cmp	eax,ebx
	jbe	return_false
	ja	return_true
      check_not_less:
	cmp	edx,ecx
	jl	return_true
	jg	return_false
	cmp	eax,ebx
	jbe	return_true
	ja	return_false
      check_not_greater:
	cmp	edx,ecx
	jl	return_false
	jg	return_true
	cmp	eax,ebx
	jb	return_false
	jae	return_true
      check_not_equal:
	cmp	eax,ebx
	jne	return_true
	cmp	edx,ecx
	jne	return_true
	jmp	return_false
      logical_number:
	pop	ebx edx eax
	or	bl,bl
	jnz	invalid_expression
	or	eax,edx
	jnz	return_true
	jmp	return_false
      check_for_defined:
	or	bl,-1
	lods	word [esi]
	cmp	ah,'('
	jne	invalid_expression
      check_expression:
	lods	byte [esi]
	or	al,al
	jz	defined_string
	cmp	al,'.'
	je	defined_fp_value
	cmp	al,')'
	je	expression_checked
	cmp	al,'!'
	je	invalid_expression
	cmp	al,0Fh
	je	check_expression
	cmp	al,10h
	je	defined_register
	cmp	al,11h
	je	check_if_symbol_defined
	cmp	al,80h
	jae	check_expression
	movzx	eax,al
	add	esi,eax
	jmp	check_expression
      defined_register:
	inc	esi
	jmp	check_expression
      defined_fp_value:
	add	esi,12
	jmp	expression_checked
      defined_string:
	lods	dword [esi]
	add	esi,eax
	inc	esi
	jmp	expression_checked
      check_if_symbol_defined:
	lods	dword [esi]
	cmp	eax,-1
	je	invalid_expression
	cmp	eax,0Fh
	jb	check_expression
	je	reserved_word_used_as_symbol
	test	byte [eax+8],4
	jnz	no_prediction
	test	byte [eax+8],1
	jz	symbol_predicted_undefined
	mov	cx,[current_pass]
	sub	cx,[eax+16]
	jz	check_expression
	cmp	cx,1
	ja	symbol_predicted_undefined
	or	byte [eax+8],40h+80h
	jmp	check_expression
      no_prediction:
	test	byte [eax+8],1
	jz	symbol_undefined
	mov	cx,[current_pass]
	sub	cx,[eax+16]
	jz	check_expression
	jmp	symbol_undefined
      symbol_predicted_undefined:
	or	byte [eax+8],40h
	and	byte [eax+8],not 80h
      symbol_undefined:
	xor	bl,bl
	jmp	check_expression
      expression_checked:
	mov	al,bl
	jmp	logical_value_ok
      check_for_used:
	lods	word [esi]
	cmp	ah,2
	jne	invalid_expression
	lods	dword [esi]
	cmp	eax,0Fh
	jb	invalid_use_of_symbol
	je	reserved_word_used_as_symbol
	inc	esi
	test	byte [eax+8],8
	jz	not_used
	mov	cx,[current_pass]
	sub	cx,[eax+18]
	jz	return_true
	cmp	cx,1
	ja	not_used
	or	byte [eax+8],10h+20h
	jmp	return_true
      not_used:
	or	byte [eax+8],10h
	and	byte [eax+8],not 20h
	jmp	return_false
      given_false:
	inc	esi
      return_false:
	xor	al,al
	jmp	logical_value_ok
      given_true:
	inc	esi
      return_true:
	or	al,-1
	jmp	logical_value_ok
      logical_expression:
	lods	byte [esi]
	mov	dl,[logical_value_wrapping]
	push	edx
	call	calculate_embedded_logical_expression
	pop	edx
	mov	[logical_value_wrapping],dl
	push	eax
	lods	byte [esi]
	cmp	al,'}'
	jne	invalid_expression
	pop	eax
      logical_value_ok:
	pop	ebx
	xor	al,bl
	ret
>
>

Rev 253	Rev 340
1	; flat assembler core	1	; flat assembler core
2	; Copyright (c) 1999-2006, Tomasz Grysztar.	2	; Copyright (c) 1999-2007, Tomasz Grysztar.
3	; All rights reserved.	3	; All rights reserved.
4		4
5	convert_expression:	5	convert_expression:
6	push ebp	6	push ebp
7	call get_fp_value	7	call get_fp_value
8	jnc fp_expression	8	jnc fp_expression
9	mov [current_offset],esp	9	mov [current_offset],esp
10	expression_loop:	10	expression_loop:
11	push edi	11	push edi
12	mov edi,single_operand_operators	12	mov edi,single_operand_operators
13	call get_operator	13	call get_operator
14	pop edi	14	pop edi
15	or al,al	15	or al,al
16	jz expression_element	16	jz expression_element
17	push eax	17	push eax
18	jmp expression_loop	18	jmp expression_loop
19	expression_element:	19	expression_element:
20	mov al,[esi]	20	mov al,[esi]
21	cmp al,1Ah	21	cmp al,1Ah
22	je expression_number	22	je expression_number
23	cmp al,22h	23	cmp al,22h
24	je expression_number	24	je expression_number
25	cmp al,'('	25	cmp al,'('
26	je expression_number	26	je expression_number
27	mov al,'!'	27	mov al,'!'
28	stos byte [edi]	28	stos byte [edi]
29	jmp expression_operator	29	jmp expression_operator
30	expression_number:	30	expression_number:
31	call convert_number	31	call convert_number
32	expression_operator:	32	expression_operator:
33	push edi	33	push edi
34	mov edi,operators	34	mov edi,operators
35	call get_operator	35	call get_operator
36	pop edi	36	pop edi
37	or al,al	37	or al,al
38	jz expression_end	38	jz expression_end
39	operators_loop:	39	operators_loop:
40	cmp esp,[current_offset]	40	cmp esp,[current_offset]
41	je push_operator	41	je push_operator
42	mov bl,al	42	mov bl,al
43	and bl,0F0h	43	and bl,0F0h
44	mov bh,byte [esp]	44	mov bh,byte [esp]
45	and bh,0F0h	45	and bh,0F0h
46	cmp bl,bh	46	cmp bl,bh
47	ja push_operator	47	ja push_operator
48	pop ebx	48	pop ebx
49	mov byte [edi],bl	49	mov byte [edi],bl
50	inc edi	50	inc edi
51	jmp operators_loop	51	jmp operators_loop
52	push_operator:	52	push_operator:
53	push eax	53	push eax
54	jmp expression_loop	54	jmp expression_loop
55	expression_end:	55	expression_end:
56	cmp esp,[current_offset]	56	cmp esp,[current_offset]
57	je expression_converted	57	je expression_converted
58	pop eax	58	pop eax
59	stos byte [edi]	59	stos byte [edi]
60	jmp expression_end	60	jmp expression_end
61	expression_converted:	61	expression_converted:
62	pop ebp	62	pop ebp
63	ret	63	ret
64	fp_expression:	64	fp_expression:
65	mov al,'.'	65	mov al,'.'
66	stos byte [edi]	66	stos byte [edi]
67	mov eax,[fp_value]	67	mov eax,[fp_value]
68	stos dword [edi]	68	stos dword [edi]
69	mov eax,[fp_value+4]	69	mov eax,[fp_value+4]
70	stos dword [edi]	70	stos dword [edi]
71	mov eax,[fp_value+8]	71	mov eax,[fp_value+8]
72	stos dword [edi]	72	stos dword [edi]
73	pop ebp	73	pop ebp
74	ret	74	ret
75		75
76	convert_number:	76	convert_number:
77	lea eax,[edi-10h]	77	lea eax,[edi-10h]
78	cmp eax,[labels_list]	78	cmp eax,[labels_list]
79	jae out_of_memory	79	jae out_of_memory
80	cmp byte [esi],'('	80	cmp byte [esi],'('
81	je expression_value	81	je expression_value
82	inc edi	82	inc edi
83	call get_number	83	call get_number
84	jc symbol_value	84	jc symbol_value
85	or ebp,ebp	85	or ebp,ebp
86	jz valid_number	86	jz valid_number
87	mov byte [edi-1],0Fh	87	mov byte [edi-1],0Fh
88	ret	88	ret
89	valid_number:	89	valid_number:
90	cmp dword [edi+4],0	90	cmp dword [edi+4],0
91	jne qword_number	91	jne qword_number
92	cmp word [edi+2],0	92	cmp word [edi+2],0
93	jne dword_number	93	jne dword_number
94	cmp byte [edi+1],0	94	cmp byte [edi+1],0
95	jne word_number	95	jne word_number
96	byte_number:	96	byte_number:
97	mov byte [edi-1],1	97	mov byte [edi-1],1
98	inc edi	98	inc edi
99	ret	99	ret
100	qword_number:	100	qword_number:
101	mov byte [edi-1],8	101	mov byte [edi-1],8
102	add edi,8	102	add edi,8
103	ret	103	ret
104	dword_number:	104	dword_number:
105	mov byte [edi-1],4	105	mov byte [edi-1],4
106	scas dword [edi]	106	scas dword [edi]
107	ret	107	ret
108	word_number:	108	word_number:
109	mov byte [edi-1],2	109	mov byte [edi-1],2
110	scas word [edi]	110	scas word [edi]
111	ret	111	ret
112	expression_value:	112	expression_value:
113	mov eax,esp	113	mov eax,esp
114	sub eax,100h	114	sub eax,100h
115	jc stack_overflow	115	jc stack_overflow
116	cmp eax,[stack_limit]	116	cmp eax,[stack_limit]
117	jb stack_overflow	117	jb stack_overflow
118	inc esi	118	inc esi
119	push [current_offset]	119	push [current_offset]
120	call convert_expression	120	call convert_expression
121	pop [current_offset]	121	pop [current_offset]
122	lods byte [esi]	122	lods byte [esi]
123	cmp al,')'	123	cmp al,')'
124	jne invalid_expression	124	jne invalid_expression
125	ret	125	ret
126	symbol_value:	126	symbol_value:
127	push edi	127	push edi
128	mov edi,address_registers	128	mov edi,address_registers
129	call get_operator	129	call get_operator
130	or al,al	130	or al,al
131	jnz register_value	131	jnz register_value
132	mov edi,directive_operators	132	mov edi,directive_operators
133	call get_operator	133	call get_operator
134	pop edi	134	pop edi
135	or al,al	135	or al,al
136	jnz broken_value	136	jnz broken_value
137	lods byte [esi]	137	lods byte [esi]
138	cmp al,1Ah	138	cmp al,1Ah
139	jne invalid_value	139	jne invalid_value
140	lods byte [esi]	140	lods byte [esi]
141	movzx ecx,al	141	movzx ecx,al
142	call get_label_id	142	call get_label_id
143	store_label_value:	143	store_label_value:
144	mov byte [edi-1],11h	144	mov byte [edi-1],11h
145	stos dword [edi]	145	stos dword [edi]
146	ret	146	ret
147	broken_value:	147	broken_value:
148	mov eax,0Fh	148	mov eax,0Fh
149	jmp store_label_value	149	jmp store_label_value
150	register_value:	150	register_value:
151	pop edi	151	pop edi
152	mov byte [edi-1],10h	152	mov byte [edi-1],10h
153	stos byte [edi]	153	stos byte [edi]
154	ret	154	ret
155		155
156	get_number:	156	get_number:
157	xor ebp,ebp	157	xor ebp,ebp
158	lods byte [esi]	158	lods byte [esi]
159	cmp al,22h	159	cmp al,22h
160	je get_text_number	160	je get_text_number
161	cmp al,1Ah	161	cmp al,1Ah
162	jne not_number	162	jne not_number
163	lods byte [esi]	163	lods byte [esi]
164	movzx ecx,al	164	movzx ecx,al
165	mov [number_start],esi	165	mov [number_start],esi
166	mov al,[esi]	166	mov al,[esi]
167	cmp al,'$'	167	cmp al,'$'
168	je number_begin	168	je number_begin
169	sub al,30h	169	sub al,30h
170	cmp al,9	170	cmp al,9
171	ja invalid_number	171	ja invalid_number
172	number_begin:	172	number_begin:
173	mov ebx,esi	173	mov ebx,esi
174	add esi,ecx	174	add esi,ecx
175	push esi	175	push esi
176	dec esi	176	dec esi
177	mov dword [edi],0	177	mov dword [edi],0
178	mov dword [edi+4],0	178	mov dword [edi+4],0
179	cmp byte [ebx],'$'	179	cmp byte [ebx],'$'
180	je pascal_hex_number	180	je pascal_hex_number
181	cmp word [ebx],'0x'	181	cmp word [ebx],'0x'
182	je get_hex_number	182	je get_hex_number
183	mov al,[esi]	183	mov al,[esi]
184	dec esi	184	dec esi
185	cmp al,'h'	185	cmp al,'h'
186	je get_hex_number	186	je get_hex_number
187	cmp al,'b'	187	cmp al,'b'
188	je get_bin_number	188	je get_bin_number
189	cmp al,'d'	189	cmp al,'d'
190	je get_dec_number	190	je get_dec_number
191	cmp al,'o'	191	cmp al,'o'
192	je get_oct_number	192	je get_oct_number
193	cmp al,'H'	193	cmp al,'H'
194	je get_hex_number	194	je get_hex_number
195	cmp al,'B'	195	cmp al,'B'
196	je get_bin_number	196	je get_bin_number
197	cmp al,'D'	197	cmp al,'D'
198	je get_dec_number	198	je get_dec_number
199	cmp al,'O'	199	cmp al,'O'
200	je get_oct_number	200	je get_oct_number
201	inc esi	201	inc esi
202	get_dec_number:	202	get_dec_number:
203	mov ebx,esi	203	mov ebx,esi
204	mov esi,[number_start]	204	mov esi,[number_start]
205	get_dec_digit:	205	get_dec_digit:
206	cmp esi,ebx	206	cmp esi,ebx
207	ja number_ok	207	ja number_ok
208	xor edx,edx	208	xor edx,edx
209	mov eax,[edi]	209	mov eax,[edi]
210	shld edx,eax,2	210	shld edx,eax,2
211	shl eax,2	211	shl eax,2
212	add eax,[edi]	212	add eax,[edi]
213	adc edx,0	213	adc edx,0
214	add eax,eax	214	add eax,eax
215	adc edx,edx	215	adc edx,edx
216	mov [edi],eax	216	mov [edi],eax
217	mov eax,[edi+4]	217	mov eax,[edi+4]
218	add eax,eax	218	add eax,eax
219	jc dec_out_of_range	219	jc dec_out_of_range
220	add eax,eax	220	add eax,eax
221	jc dec_out_of_range	221	jc dec_out_of_range
222	add eax,[edi+4]	222	add eax,[edi+4]
223	jc dec_out_of_range	223	jc dec_out_of_range
224	add eax,eax	224	add eax,eax
225	jc dec_out_of_range	225	jc dec_out_of_range
226	add eax,edx	226	add eax,edx
227	jc dec_out_of_range	227	jc dec_out_of_range
228	mov [edi+4],eax	228	mov [edi+4],eax
229	movzx eax,byte [esi]	229	movzx eax,byte [esi]
230	sub al,30h	230	sub al,30h
231	cmp al,9	231	cmp al,9
232	ja bad_number	232	ja bad_number
233	add [edi],eax	233	add [edi],eax
234	adc dword [edi+4],0	234	adc dword [edi+4],0
235	jc dec_out_of_range	235	jc dec_out_of_range
236	inc esi	236	inc esi
237	jmp get_dec_digit	237	jmp get_dec_digit
238	dec_out_of_range:	238	dec_out_of_range:
239	or ebp,-1	239	or ebp,-1
240	inc esi	240	inc esi
241	jmp get_dec_digit	241	jmp get_dec_digit
242	bad_number:	242	bad_number:
243	pop eax	243	pop eax
244	invalid_number:	244	invalid_number:
245	mov esi,[number_start]	245	mov esi,[number_start]
246	dec esi	246	dec esi
247	not_number:	247	not_number:
248	dec esi	248	dec esi
249	stc	249	stc
250	ret	250	ret
251	get_bin_number:	251	get_bin_number:
252	xor bl,bl	252	xor bl,bl
253	get_bin_digit:	253	get_bin_digit:
254	cmp esi,[number_start]	254	cmp esi,[number_start]
255	jb number_ok	255	jb number_ok
256	movzx eax,byte [esi]	256	movzx eax,byte [esi]
257	sub al,30h	257	sub al,30h
258	cmp al,1	258	cmp al,1
259	ja bad_number	259	ja bad_number
260	xor edx,edx	260	xor edx,edx
261	mov cl,bl	261	mov cl,bl
262	dec esi	262	dec esi
263	cmp bl,64	263	cmp bl,64
264	je bin_out_of_range	264	je bin_out_of_range
265	inc bl	265	inc bl
266	cmp cl,32	266	cmp cl,32
267	jae bin_digit_high	267	jae bin_digit_high
268	shl eax,cl	268	shl eax,cl
269	or dword [edi],eax	269	or dword [edi],eax
270	jmp get_bin_digit	270	jmp get_bin_digit
271	bin_digit_high:	271	bin_digit_high:
272	sub cl,32	272	sub cl,32
273	shl eax,cl	273	shl eax,cl
274	or dword [edi+4],eax	274	or dword [edi+4],eax
275	jmp get_bin_digit	275	jmp get_bin_digit
276	bin_out_of_range:	276	bin_out_of_range:
277	or al,al	277	or al,al
278	jz get_bin_digit	278	jz get_bin_digit
279	or ebp,-1	279	or ebp,-1
280	jmp get_bin_digit	280	jmp get_bin_digit
281	pascal_hex_number:	281	pascal_hex_number:
282	cmp cl,1	282	cmp cl,1
283	je bad_number	283	je bad_number
284	get_hex_number:	284	get_hex_number:
285	xor bl,bl	285	xor bl,bl
286	get_hex_digit:	286	get_hex_digit:
287	cmp esi,[number_start]	287	cmp esi,[number_start]
288	jb number_ok	288	jb number_ok
289	movzx eax,byte [esi]	289	movzx eax,byte [esi]
290	cmp al,'x'	290	cmp al,'x'
291	je hex_number_ok	291	je hex_number_ok
292	cmp al,'$'	292	cmp al,'$'
293	je pascal_hex_ok	293	je pascal_hex_ok
294	sub al,30h	294	sub al,30h
295	cmp al,9	295	cmp al,9
296	jbe hex_digit_ok	296	jbe hex_digit_ok
297	sub al,7	297	sub al,7
298	cmp al,15	298	cmp al,15
299	jbe hex_letter_digit_ok	299	jbe hex_letter_digit_ok
300	sub al,20h	300	sub al,20h
301	cmp al,15	301	cmp al,15
302	ja bad_number	302	ja bad_number
303	hex_letter_digit_ok:	303	hex_letter_digit_ok:
304	cmp al,10	304	cmp al,10
305	jb bad_number	305	jb bad_number
306	hex_digit_ok:	306	hex_digit_ok:
307	xor edx,edx	307	xor edx,edx
308	mov cl,bl	308	mov cl,bl
309	dec esi	309	dec esi
310	cmp bl,64	310	cmp bl,64
311	je hex_out_of_range	311	je hex_out_of_range
312	add bl,4	312	add bl,4
313	cmp cl,32	313	cmp cl,32
314	jae hex_digit_high	314	jae hex_digit_high
315	shl eax,cl	315	shl eax,cl
316	or dword [edi],eax	316	or dword [edi],eax
317	jmp get_hex_digit	317	jmp get_hex_digit
318	hex_digit_high:	318	hex_digit_high:
319	sub cl,32	319	sub cl,32
320	shl eax,cl	320	shl eax,cl
321	or dword [edi+4],eax	321	or dword [edi+4],eax
322	jmp get_hex_digit	322	jmp get_hex_digit
323	hex_out_of_range:	323	hex_out_of_range:
324	or al,al	324	or al,al
325	jz get_hex_digit	325	jz get_hex_digit
326	or ebp,-1	326	or ebp,-1
327	jmp get_hex_digit	327	jmp get_hex_digit
328	get_oct_number:	328	get_oct_number:
329	xor bl,bl	329	xor bl,bl
330	get_oct_digit:	330	get_oct_digit:
331	cmp esi,[number_start]	331	cmp esi,[number_start]
332	jb number_ok	332	jb number_ok
333	movzx eax,byte [esi]	333	movzx eax,byte [esi]
334	sub al,30h	334	sub al,30h
335	cmp al,7	335	cmp al,7
336	ja bad_number	336	ja bad_number
337	oct_digit_ok:	337	oct_digit_ok:
338	xor edx,edx	338	xor edx,edx
339	mov cl,bl	339	mov cl,bl
340	dec esi	340	dec esi
341	cmp bl,64	341	cmp bl,64
342	jae oct_out_of_range	342	jae oct_out_of_range
343	add bl,3	343	add bl,3
344	cmp cl,30	344	cmp cl,30
345	je oct_digit_wrap	345	je oct_digit_wrap
346	ja oct_digit_high	346	ja oct_digit_high
347	shl eax,cl	347	shl eax,cl
348	or dword [edi],eax	348	or dword [edi],eax
349	jmp get_oct_digit	349	jmp get_oct_digit
350	oct_digit_wrap:	350	oct_digit_wrap:
351	shl eax,cl	351	shl eax,cl
352	adc dword [edi+4],0	352	adc dword [edi+4],0
353	or dword [edi],eax	353	or dword [edi],eax
354	jmp get_oct_digit	354	jmp get_oct_digit
355	oct_digit_high:	355	oct_digit_high:
356	sub cl,32	356	sub cl,32
357	shl eax,cl	357	shl eax,cl
358	or dword [edi+4],eax	358	or dword [edi+4],eax
359	jmp get_oct_digit	359	jmp get_oct_digit
360	oct_out_of_range:	360	oct_out_of_range:
361	or al,al	361	or al,al
362	jz get_oct_digit	362	jz get_oct_digit
363	or ebp,-1	363	or ebp,-1
364	jmp get_oct_digit	364	jmp get_oct_digit
365	hex_number_ok:	365	hex_number_ok:
366	dec esi	366	dec esi
367	pascal_hex_ok:	367	pascal_hex_ok:
368	cmp esi,[number_start]	368	cmp esi,[number_start]
369	jne bad_number	369	jne bad_number
370	number_ok:	370	number_ok:
371	pop esi	371	pop esi
372	number_done:	372	number_done:
373	clc	373	clc
374	ret	374	ret
375	get_text_number:	375	get_text_number:
376	lods dword [esi]	376	lods dword [esi]
377	mov edx,eax	377	mov edx,eax
378	xor bl,bl	378	xor bl,bl
379	mov dword [edi],0	379	mov dword [edi],0
380	mov dword [edi+4],0	380	mov dword [edi+4],0
381	get_text_character:	381	get_text_character:
382	sub edx,1	382	sub edx,1
383	jc number_done	383	jc number_done
384	movzx eax,byte [esi]	384	movzx eax,byte [esi]
385	inc esi	385	inc esi
386	mov cl,bl	386	mov cl,bl
387	cmp bl,64	387	cmp bl,64
388	je text_out_of_range	388	je text_out_of_range
389	add bl,8	389	add bl,8
390	cmp cl,32	390	cmp cl,32
391	jae text_character_high	391	jae text_character_high
392	shl eax,cl	392	shl eax,cl
393	or dword [edi],eax	393	or dword [edi],eax
394	jmp get_text_character	394	jmp get_text_character
395	text_character_high:	395	text_character_high:
396	sub cl,32	396	sub cl,32
397	shl eax,cl	397	shl eax,cl
398	or dword [edi+4],eax	398	or dword [edi+4],eax
399	jmp get_text_character	399	jmp get_text_character
400	text_out_of_range:	400	text_out_of_range:
401	or ebp,-1	401	or ebp,-1
402	jmp get_text_character	402	jmp get_text_character
403		403
404	get_fp_value:	404	get_fp_value:
405	push edi esi	405	push edi esi
406	lods byte [esi]	406	lods byte [esi]
407	cmp al,1Ah	407	cmp al,1Ah
408	je fp_value_start	408	je fp_value_start
409	cmp al,'-'	409	cmp al,'-'
410	je fp_sign_ok	410	je fp_sign_ok
411	cmp al,'+'	411	cmp al,'+'
412	jne not_fp_value	412	jne not_fp_value
413	fp_sign_ok:	413	fp_sign_ok:
414	lods byte [esi]	414	lods byte [esi]
415	cmp al,1Ah	415	cmp al,1Ah
416	jne not_fp_value	416	jne not_fp_value
417	fp_value_start:	417	fp_value_start:
418	lods byte [esi]	418	lods byte [esi]
419	movzx ecx,al	419	movzx ecx,al
420	cmp cl,1	420	cmp cl,1
421	jbe not_fp_value	421	jbe not_fp_value
422	lea edx,[esi+1]	422	lea edx,[esi+1]
423	xor ah,ah	423	xor ah,ah
424	check_fp_value:	424	check_fp_value:
425	lods byte [esi]	425	lods byte [esi]
426	cmp al,'.'	426	cmp al,'.'
427	je fp_character_dot	427	je fp_character_dot
428	cmp al,'E'	428	cmp al,'E'
429	je fp_character_exp	429	je fp_character_exp
430	cmp al,'e'	430	cmp al,'e'
431	je fp_character_exp	431	je fp_character_exp
432	cmp al,'F'	432	cmp al,'F'
433	je fp_last_character	433	je fp_last_character
434	cmp al,'f'	434	cmp al,'f'
435	je fp_last_character	435	je fp_last_character
436	digit_expected:	436	digit_expected:
437	cmp al,'0'	437	cmp al,'0'
438	jb not_fp_value	438	jb not_fp_value
439	cmp al,'9'	439	cmp al,'9'
440	ja not_fp_value	440	ja not_fp_value
441	jmp fp_character_ok	441	jmp fp_character_ok
442	fp_character_dot:	442	fp_character_dot:
443	cmp esi,edx	443	cmp esi,edx
444	je not_fp_value	444	je not_fp_value
445	or ah,ah	445	or ah,ah
446	jnz not_fp_value	446	jnz not_fp_value
447	or ah,1	447	or ah,1
448	lods byte [esi]	448	lods byte [esi]
449	loop digit_expected	449	loop digit_expected
450	not_fp_value:	450	not_fp_value:
451	pop esi edi	451	pop esi edi
452	stc	452	stc
453	ret	453	ret
454	fp_last_character:	454	fp_last_character:
455	cmp cl,1	455	cmp cl,1
456	jne not_fp_value	456	jne not_fp_value
457	or ah,4	457	or ah,4
458	jmp fp_character_ok	458	jmp fp_character_ok
459	fp_character_exp:	459	fp_character_exp:
460	cmp esi,edx	460	cmp esi,edx
461	je not_fp_value	461	je not_fp_value
462	cmp ah,1	462	cmp ah,1
463	ja not_fp_value	463	ja not_fp_value
464	or ah,2	464	or ah,2
465	cmp ecx,1	465	cmp ecx,1
466	jne fp_character_ok	466	jne fp_character_ok
467	cmp byte [esi],'+'	467	cmp byte [esi],'+'
468	je fp_exp_sign	468	je fp_exp_sign
469	cmp byte [esi],'-'	469	cmp byte [esi],'-'
470	jne fp_character_ok	470	jne fp_character_ok
471	fp_exp_sign:	471	fp_exp_sign:
472	inc esi	472	inc esi
473	cmp byte [esi],1Ah	473	cmp byte [esi],1Ah
474	jne not_fp_value	474	jne not_fp_value
475	inc esi	475	inc esi
476	lods byte [esi]	476	lods byte [esi]
477	movzx ecx,al	477	movzx ecx,al
478	inc ecx	478	inc ecx
479	fp_character_ok:	479	fp_character_ok:
480	dec ecx	480	dec ecx
481	jnz check_fp_value	481	jnz check_fp_value
482	or ah,ah	482	or ah,ah
483	jz not_fp_value	483	jz not_fp_value
484	pop esi	484	pop esi
485	lods byte [esi]	485	lods byte [esi]
486	mov [fp_sign],0	486	mov [fp_sign],0
487	cmp al,1Ah	487	cmp al,1Ah
488	je fp_get	488	je fp_get
489	inc esi	489	inc esi
490	cmp al,'+'	490	cmp al,'+'
491	je fp_get	491	je fp_get
492	mov [fp_sign],1	492	mov [fp_sign],1
493	fp_get:	493	fp_get:
494	lods byte [esi]	494	lods byte [esi]
495	movzx ecx,al	495	movzx ecx,al
496	xor edx,edx	496	xor edx,edx
497	mov edi,fp_value	497	mov edi,fp_value
498	mov [edi],edx	498	mov [edi],edx
499	mov [edi+4],edx	499	mov [edi+4],edx
500	mov [edi+12],edx	500	mov [edi+12],edx

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(root)/programs/develop/fasm/trunk/expressi.inc – Rev 253 → 340