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Started by Jonathan A. Chandross
Mon, 09 Nov 1992 00:11
v001SRC067: coff (OMF Disassembler) 02/09
Author: Jonathan A. Chandross
Date: Mon, 09 Nov 1992 00:11
Date: Mon, 09 Nov 1992 00:11
3531 lines
67883 bytes
67883 bytes
Submitted-by: Albert Chin-A-Young (26285659t@servax.fiu.edu)
Posting-number: Volume 1, Source:67
Archive-name: utility/gs/disassem/coff/part02
Architecture: ONLY_2gs
Version-number: 1.1
=asm.s
- lst off
-
-* UNIX coff utility
-* 65816 OMF disassembler
-*
-* 1990-1992, tao Developer Project
-
- rel
- xc
- xc
- mx %00
-
- put coff.h ;global defines
- put x.data ;data externals
- put x.general ;general externals
- put x.gsos ;GS/OS i/o externals
- put x.omf ;OMF parser externals
- put x.output ;output externals
- put x.structure ;data structure externals
-
- put 4/gsos.h ;GS/OS defines
- put 4/memory.h ;memory manager defines
- put 4/resource.h ;resouce manager defines
- put 4/texttool.h ;text tool defines
- put 4/env.h ;run-time environment settings
-
- use coff.mac ;macro definitions
- use 4/datatype.mac ;HLL data types
- use 4/env.mac ;run-time environment macros
-
-
-* dp $9x-$cx taken
-
-**************************************************
-* display header for asm disassembly. *
-**************************************************
-display_header_asm ent
-]segname_handle = $f0 ;handle to segment name
-]segname_ptr = $f4
-]segname_len = $f8 ;length of segment name
-
- ldx @omf+`segname+2
- ldy @omf+`segname
- stx ]segname_handle+2
- sty ]segname_handle
- ldy #2
- lda []segname_handle],y
- sta ]segname_ptr+2
- lda []segname_handle]
- sta ]segname_ptr
- lda []segname_ptr]
- sta ]segname_len
-
- lda ~assembler
- cmp #MERLIN
- bne :orca
- lda #LONGA
- jsr asm_status_bit
- jsr print_offset
- pei ]segname_ptr+2
- pei ]segname_ptr
- pea #2
- pei ]segname_len
- _TextWriteBlock
- lda ]segname_len
- cmp #12
- blt :0
- pea #' '
- _WriteChar
- bra :1
-:0 pea #^blank_str
- pea #blank_str
- pea #0
- sec
- lda #12
- sbc ]segname_len
- pha
- _TextWriteBlock
-:1 pea #^EQU_asm
- pea #EQU_asm
- _WriteCString
- pea #'*'
- _WriteChar
- bra :end
-
-:orca lda #LONGA
- jsr asm_status_bit
- lda #LONGI
- jsr asm_status_bit
- jsr print_offset
- pei ]segname_ptr+2
- pei ]segname_ptr
- pea #2
- pei ]segname_len
- _TextWriteBlock
- lda ]segname_len
- cmp #12
- blt :2
- pea #' '
- _WriteChar
- bra :3
-:2 pea #^blank_str
- pea #blank_str
- pea #0
- sec
- lda #12
- sbc ]segname_len
- pha
- _TextWriteBlock
-:3 lda @omf+`kind
- and #DATA
- cmp #DATA
- bne :start
- pea #^:data_str
- pea #:data_str
- _WriteCString
- bra :end
-:start pea #^:start_str
- pea #:start_str
- _WriteCString
-:end put_cr
- rts
-
-:data_str cStr 'data'
-:start_str cStr 'start'
-
-
-**************************************************
-* display status of accumulator and index *
-* registers (short/long). *
-* ---------------------------------------------- *
-* (input) *
-* a - display accumulator or index status. *
-**************************************************
-asm_status_bit equ *
-]status_bit = $e0
-
- sta ]status_bit
-
- jsr print_offset
- pea #^space_12
- pea #space_12
- _WriteCString
- lda ~assembler
- cmp #MERLIN
- bne :orca
-
-:merlin pea #^:mx_str
- pea #:mx_str
- _WriteCString
- ldx #'0'
- lda }shorti
- bne :test_shorta
- ldx #'1'
-:test_shorta phx
- ldx #'0'
- lda }shorta
- bne :merlin_end
- ldx #'1'
-:merlin_end phx
- _WriteChar
- _WriteChar
- put_cr
- rts
-
-:orca lda ]status_bit
- cmp #LONGA
- bne :longi
- pea #^:longa_str
- pea #:longa_str
- _WriteCString
- lda }shorta
- beq :longa_off
- pea #^:off_str
- pea #:off_str
- bra :end
-:longa_off pea #^:on_str
- pea #:on_str
- bra :end
-
-:longi pea #^:longi_str
- pea #:longi_str
- _WriteCString
- lda }shorti
- beq :longi_off
- pea #^:off_str
- pea #:off_str
- bra :end
-:longi_off pea #^:on_str
- pea #:on_str
-
-:end _WriteCString
- put_cr
- rts
-
-:mx_str cStr 'mx %'
-:longa_str cStr 'longa '
-:longi_str cStr 'longi '
-:on_str cStr 'on'
-:off_str cStr 'off'
-
-
-**************************************************
-* parse CONST record for disassembling. *
-* ---------------------------------------------- *
-* (input) *
-* a - record number. *
-**************************************************
-parse_CONST_asm ent
-]count = $90 ;number of bytes to read
-]edge = $94 ;right margin for output
-]record = $96 ;record number
-]opcode = $98 ;opcode to parse
-]opcode_adr = $9a ;address of opcode data
-
- sta ]record
- stz ]opcode
- stz ]count+2
- stz ]count
-
- cmp #LCONST
- bne :const
- read_long ]count
- clc
- lda @omf+`displacement
- adc #4
- sta @omf+`displacement
- bcc :loop
- inc @omf+`displacement+2
- bra :loop
-:const sta ]count
-
-:loop lda ]count
- ora ]count+2
- bne :print_opcode
- rts
-:print_opcode read_char ]opcode
- pea #^space_12 ;indent to print opcode and operand
- pea #space_12
- _WriteCString
- lda ]opcode
- asl
- tax
- lda ~opcodes,x
- sta ]opcode_adr
- ldy #`num_bytes ;parse opcode depending on number
- lda (]opcode_adr),y ;of bytes it takes
- cmp #1
- bne :2_bytes
- lda ]opcode
- jsr parse_opcode_1
- lda ]count
- bne :0
- dec ]count+2
-:0 dec ]count
- bra :end_loop
-:2_bytes cmp #2
- bne :3_bytes
- lda ]opcode
- ldx ]count+2
- ldy ]count
- jsr parse_opcode_2
- stx ]count+2
- sty ]count
- bra :end_loop
-:3_bytes cmp #3
- bne :4_bytes
- lda ]opcode
- ldx ]count+2
- ldy ]count
- jsr parse_opcode_3
- stx ]count+2
- sty ]count
- bra :end_loop
-:4_bytes lda ]opcode
- ldx ]count+2
- ldy ]count
- jsr parse_opcode_4
- stx ]count+2
- sty ]count
-
-:end_loop lda }nooffset
- beq :1
- brl :loop
-:1 lda ]count+2
- ora ]count
- beq :end
- jsr print_offset
- brl :loop
-:end rts
-
-
-**************************************************
-* parse opcodes that accept 1-byte operands. *
-* ---------------------------------------------- *
-* (input) *
-* a - opcode. *
-**************************************************
-parse_opcode_1 equ *
-]opcode = $a0 ;opcode
-]opcode_adr = $a2 ;pointer to information about opcode
-]opcode_syntax = $a4 ;string syntax of opcode
-
- sta ]opcode
- asl
- tax
- lda ~opcodes,x
- sta ]opcode_adr
-
- pea #^parse_opcode_1
- clc
- lda ]opcode_adr
- adc #`syntax
- pha
- _WriteCString
-
- ldy #`mode
- lda (]opcode_adr),y
- cmp #ACCUMULATOR
- bne :0
- lda ~assembler
- cmp #ORCA
- bne :0
- pea #'a'
- bra :1
-:0 pea #' '
-:1 _WriteChar
-
- lda }hex
- beq :2
- pea #^blank_str ;separate asm/hex-ascii output
- pea #blank_str
- pea #0
- pea #24
- _TextWriteBlock
-:2 lda ]opcode
- ora #$0100
- ldx #0
- txy
- jsr print_hex_ascii
- incr @omf+`displacement
- incr @omf+`counter
-:end rts
-
-
-**************************************************
-* parse opcodes that accept 2-byte operands. *
-* ---------------------------------------------- *
-* (input) *
-* a - opcode. *
-* x - HOW of number of bytes to disassemble. *
-* y - LOW of number of bytes to disassemble. *
-* (output) *
-* x - HOW of number of bytes to disassemble. *
-* y - LOW of number of bytes to disassemble. *
-**************************************************
-parse_opcode_2 equ *
-]opcode = $a0 ;opcode
-]count = $a2 ;number of bytes to disassemble
-]operand = $a6 ;operand of opcode
-]opcode_adr = $a8 ;pointer to information about opcode
-
- sta ]opcode
- stx ]count+2
- sty ]count
- stz ]operand
- asl
- tax
- lda ~opcodes,x
- sta ]opcode_adr
-
- ldy #`m ;test if operand affected by short
- lda (]opcode_adr),y ;accumulator
- beq :test_i
- lda }shorta
- beq :short
-:test_i ldy #`i ;test if operand affected by short
- lda (]opcode_adr),y ;indexes
- bne :test_short
- brl :print_opcode
-:test_short lda }shorti
- beq :short
- brl :print_opcode
-:short lda ]count+2
- bne :0
- lda ]count
- cmp #3
- blt :3
-:0 incr #3;@omf+`displacement
- incr #3;@omf+`counter
- read_short ]operand ;because shorta or shorti is not
- lda }tool ;active, read in two byte operand
- beq :1
- lda ]opcode
- cmp #LDX
- bne :1
- pei ]count+2
- pei ]count
- pei ]operand
- pei ]opcode
- jsr parse_stack
- stx ]count+2
- sty ]count
- bra :2
-:1 lda ]opcode
- ldx ]operand
- jsr print_opcode_3
-:2 sec
- lda ]count
- sbc #3
- tay
- lda ]count+2
- sbc #0
- tax
- rts
-
-:3 cmp #2
- beq :5
- clc
- lda @omf+`counter
- adc #3
- tax
- lda @omf+`counter+2
- adc #0
- cmp @omf+`length+2
- blt :4
- cpx @omf+`length
- beq :4
- blt :5
-:4 lda ]opcode
- jsr parse_expr_asm
- bra :6
-:5 lda ]opcode
- ldx ]count
- jsr print_byte
-:6 ldx #0
- txy
- rts
-
-:print_opcode lda ]count+2
- bne :8
- lda ]count
- cmp #2
- blt :9
-:8 lda ]opcode
- jsr print_opcode_2
- sec
- lda ]count
- sbc #2
- tay
- lda ]count+2
- sbc #0
- tax
- rts
-:9 clc
- lda @omf+`counter
- adc #2
- tax
- lda @omf+`counter+2
- adc #0
- cmp @omf+`length+2
- blt :10
- cpx @omf+`length
- beq :10
- bge :11
-:10 lda ]opcode
- jsr parse_expr_asm
- bra :12
-:11 lda ]opcode
- ldx ]count
- jsr print_byte
-:12 ldx #0
- txy
- rts
-
-
-**************************************************
-* print opcodes that generate two bytes. *
-* ---------------------------------------------- *
-* (input) *
-* a - opcode. *
-**************************************************
-print_opcode_2 equ *
-]opcode = $b0 ;opcode
-]operand = $b2 ;operand of opcode
-]opcode_adr = $b4 ;pointer to information about opcode
-]opcode_syntax = $b6 ;string syntax of opcode
-]offset = $b8 ;offset into line
-
- sta ]opcode
- stz ]operand
- asl
- tax
- lda ~opcodes,x
- sta ]opcode_adr
-
- read_char ]operand
- ldy #`mode
- lda (]opcode_adr),y
- cmp #PC_RELATIVE
- bne :2
- lda ]operand
- cmp #$80
- bge :sub_operand
-:add_operand clc
- lda @omf+`counter
- adc ]operand
- bra :printf
-:sub_operand sec ;@omf+`counter+($ff-]operand)
- lda @omf+`counter
- sbc #$100
- clc
- adc ]operand
-:printf inc
- inc
- tay
- ldx #0
- clc
- lda ]opcode_adr
- adc #`syntax
- jsr printf
- stx ]offset
- pea #^:space
- pea #:space
- _WriteCString
- clc
- lda #4
- adc ]offset
- sta ]offset
- ldx #'+'
- lda ]operand
- cmp #$80
- blt :print_char
- ldx #'-'
-:print_char phx
- _WriteChar
- inc ]offset
- ldx ]operand
- cpx #$80
- blt :print_operand
- sec
- lda #$100
- sbc ]operand
- tax
-:print_operand jsr print_fix_char_hex
- inc ]offset
- inc ]offset
- pea #'}'
- _WriteChar
- inc ]offset
- bra :print_hex
-
-:2 clc
- lda ]opcode_adr
- adc #`syntax
- ldx ]operand+2
- ldy ]operand
- jsr printf
- stx ]offset
-
-:print_hex lda }hex
- beq :3
- pea #^blank_str ;separate asm/hex-ascii output
- pea #blank_str
- pea #0
- sec
- lda #32
- sbc ]offset
- pha
- _TextWriteBlock
-:3 lda ]opcode
- ora #$0200
- ldx #0
- ldy ]operand
- jsr print_hex_ascii
- lda ]opcode
- cmp #REP
- beq :parse_rep_sep
- cmp #SEP
- bne :4
-
-:parse_rep_sep lda ]opcode
- ldx ]operand
- jsr parse_rep_sep
-
-:4 incr #2;@omf+`displacement
- incr #2;@omf+`counter
- rts
-
-:space cStr ' {'
-
-
-**************************************************
-* parse opcodes that accept 3-byte operands. *
-* ---------------------------------------------- *
-* (input) *
-* a - opcode. *
-* x - HOW of number of bytes to disassemble. *
-* y - LOW of number of bytes to disassemble. *
-* (output) *
-* x - HOW of number of bytes to disassemble. *
-* y - LOW of number of bytes to disassemble. *
-**************************************************
-parse_opcode_3 equ *
-]opcode = $a0 ;opcode
-]count = $a2 ;number of bytes to disassemble
-]tmp_count = $a6
-]operand = $aa ;operand of opcode
-
- sta ]opcode
- stx ]count+2
- sty ]count
-
- cpx #1 ;expand opcode only if 3 bytes
- bge :print_opcode ;available
- cpy #3
- bge :print_opcode
- cpy #2 ;test if two bytes left in three-byte
- beq :1 ;opcode/operand. if so, print bytes.
- clc ;test if at end of OMF segment
- lda @omf+`counter
- adc #3
- tax
- lda @omf+`counter+2
- adc #0
- cmp @omf+`length+2
- blt :0
- cpx @omf+`length
- beq :0
- bge :1
-:0 lda ]opcode
- jsr parse_expr_asm
- bra :2
-:1 lda ]opcode
- ldx ]count
- jsr print_byte
-:2 ldx #0
- txy
- rts
-
-:print_opcode incr #3;@omf+`displacement
- incr #3;@omf+`counter
- read_short ]operand
- lda }tool
- beq :5
- lda ]opcode
- cmp #JSR
- bne :4
- lda ]operand
- ldx ]count+2
- ldy ]count
- jsr parse_inline_3
- stx ]tmp_count+2
- sty ]tmp_count
- cpx ]count+2
- bne :3
- cpy ]count
- bne :3
- lda ]opcode
- ldx ]operand
- jsr print_opcode_3
- bra :end
-:3 ldx ]tmp_count+2
- ldy ]tmp_count
- stx ]count+2
- sty ]count
- bra :end
-:4 lda ]opcode
- cmp #PEA
- bne :5
- pei ]count+2
- pei ]count
- pei ]operand
- pei ]opcode
- jsr parse_stack
- stx ]count+2
- sty ]count
- bra :end
-:5 lda ]opcode
- ldx ]operand
- jsr print_opcode_3
-
-:end sec
- lda ]count
- sbc #3
- tay
- lda ]count+2
- sbc #0
- tax
- rts
-
-
-**************************************************
-* print opcodes that generate three bytes. *
-* ---------------------------------------------- *
-* (input) *
-* a - opcode. *
-* x - operand. *
-**************************************************
-print_opcode_3 equ *
-]opcode = $b0 ;opcode
-]operand = $b2 ;operand of opcode
-]opcode_adr = $b4 ;pointer to information about opcode
-]offset = $b6 ;offset into line
-]ROM_ptr = $b8 ;pointer to ROM name
-
- sta ]opcode
- stx ]operand
- asl
- tax
- lda ~opcodes,x
- sta ]opcode_adr
- stz ]offset
-
- ldy #`mode
- lda (]opcode_adr),y
- cmp #ABSOLUTE
- bne :pc_relative_long
- lda }tool
- bne :ROM_tool
- brl :default
-:ROM_tool ldx ]operand
- ldy #0
- jsr name_ROM
- stx ]ROM_ptr
- sty ]ROM_ptr+2
- bcc :print_ROM
- brl :default
-:print_ROM phy
- phx
- pea #^print_opcode_3
- clc
- lda ]opcode_adr
- adc #`syntax
- pha
- pea #0
- pea #7
- _TextWriteBlock
- _WriteString
- lda []ROM_ptr]
- and #$ff
- clc
- adc #7
- sta ]offset
- brl :end
-
-:pc_relative_long cmp #PC_RELATIVE_LONG
- bne :block_move
- lda ]operand
- bmi :sub_operand
-:add_operand clc
- lda @omf+`counter
- adc ]operand
- bra :printf
-:sub_operand sec
- lda @omf+`counter
- sbc ]operand
-:printf inc
- inc
- tay
- ldx #0
- clc
- lda ]opcode_adr
- adc #`syntax
- jsr printf
- stx ]offset
- pea #^:space
- pea #:space
- _WriteCString
- ldx #'+'
- lda ]operand
- bpl :print_char
- ldx #'-'
-:print_char phx
- _WriteChar
- ldx ]operand
- bpl :print_operand
- sec
- lda #$ffff
- sbc ]operand
- inc
- tax
-:print_operand lda #4
- jsr print_fix_short_hex
- clc
- lda ]offset
- adc #10
- sta ]offset
- pea #'}'
- _WriteChar
- brl :end
-
-:block_move cmp #BLOCK_MOVE
- bne :immediate
- pea #^print_opcode_3
- clc
- lda ]opcode_adr
- adc #`syntax
- pha
- _WriteCString
- lda ]operand
- xba
- and #$ff
- tax
- jsr print_fix_char_hex
- pea #','
- _WriteChar
- pea #'$'
- _WriteChar
- lda ]operand
- and #$ff
- tax
- jsr print_fix_char_hex
- lda #14
- sta ]offset
- bra :end
-
-:immediate cmp #IMMEDIATE
- bne :default
- ldy #`syntax+10
- shorta
- lda (]opcode_adr),y
- pha
- lda #'4'
- sta (]opcode_adr),y
- longa
- clc
- lda ]opcode_adr
- adc #`syntax
- ldx #0
- ldy ]operand
- jsr printf
- stx ]offset
- ldy #`syntax+10
- shorta
- pla
- sta (]opcode_adr),y
- longa
- bra :end
-
-:default clc
- lda ]opcode_adr
- adc #`syntax
- ldx #0
- ldy ]operand
- jsr printf
- stx ]offset
-
-:end lda }hex
- beq :9
- pea #^blank_str ;separate asm/hex-ascii output
- pea #blank_str
- pea #0
- sec
- lda #32
- sbc ]offset
- pha
- _TextWriteBlock
-:9 lda ]opcode
- ora #$0300
- ldx #0
- ldy ]operand
- jsr print_hex_ascii
- rts
-
-:space cStr ' {'
-
-
-**************************************************
-* parse GS/OS inline calls for opcodes *
-* generating three bytes. *
-* ---------------------------------------------- *
-* (input) *
-* a - operand (GS/OS entry point). *
-* x - HOW of number of bytes to disassemble. *
-* y - LOW of number of bytes to disassemble. *
-* (output) *
-* x - HOW of number of bytes to disassemble. *
-* y - LOW of number of bytes to disassemble. *
-**************************************************
-parse_inline_3 equ *
-]callnum = $b0 ;GS/OS call number
-]assembler = $b2 ;temp copy of ~assembler
-]count = $b2 ;number of bytes left to disassemble
-]mark = $b6 ;current offset into OMF file
-]parmblock = $ba ;parameter block number for call
-
- sta ]callnum
- stx ]count+2
- sty ]count
-
- cmp #PRODOS_MLI
- beq :parse_inline
- ldx ]count+2
- ldy ]count
- rts
-
-:parse_inline jsr GSOSget_mark
- stx ]mark+2
- sty ]mark
-
- ldx ]count+2
- bne :4_bytes
- lda ]count
- cmp #3
- bne :4_bytes
- brl :end
-
-:4_bytes cpx #0
- bne :default
- cmp #4
- beq :0
- bra :default
-:0 stz ]callnum
- read_char ]callnum
- lda ]callnum
- jsr name_GSOS
- bcc :1
- ldx ]mark+2
- ldy ]mark
- jsr GSOSset_mark
- brl :end
-:1 phy
- phx
- incr @omf+`displacement
- incr @omf+`counter
- pea #'_'
- _WriteChar
- _WriteString
- pea #' '
- _WriteChar
- lda ~assembler
- sta ]assembler
- lda #MERLIN
- sta ~assembler
- lda #DC
- jsr parse_expr_asm
- lda ]assembler
- sta ~assembler
- ldx #0
- ldy #3
- rts
-
-:default stz ]callnum
- read_char ]callnum
- read_short ]parmblock
- lda ]callnum
- jsr name_GSOS
- bcc :2
- ldx ]mark+2
- ldy ]mark
- jsr GSOSset_mark
- brl :end
-:2 phy
- phx
- pea #'_'
- _WriteChar
- _WriteString
- pea #' '
- _WriteChar
- pea #'$'
- _WriteChar
- lda #4
- ldx ]parmblock
- jsr print_fix_short_hex
- put_cr
- incr #3;@omf+`displacement
- incr #3;@omf+`counter
- decr #3;]count
-
-:end ldx ]count+2
- ldy ]count
- rts
-
-
-**************************************************
-* parse stack-based GS/OS call. *
-* ---------------------------------------------- *
-* (input) *
-* long - number of bytes to disassemble. *
-* word - operand. *
-* word - opcode. *
-* (output) *
-* x - HOW of number of bytes to disassemble. *
-* y - LOW of number of bytes to disassemble. *
-**************************************************
-parse_stack equ *
-]opcode = $c0 ;opcode
-]operand = $c2 ;opcode operand
-]count = $c4 ;number of bytes left to disassemble
-]mark = $c8 ;offset into OMF file
-]jsl = $cc ;next operand
-]callnum = $ce ;operand call address
-
- pla ;return address
- plx
- ply
- stx ]opcode
- sty ]operand
- plx ;number of bytes to disassemble
- ply
- stx ]count
- sty ]count+2
- pha ;push return back on stack
-
- bne :parse_stack
- cpx #7
- bge :parse_stack
- brl :2
-
-:parse_stack jsr GSOSget_mark
- stx ]mark+2
- sty ]mark
- stz ]jsl
- stz ]callnum+2
- read_char ]jsl ;test if next opcode is JSL
- clc
- tdc
- adc #]callnum
- tax
- ldy #0
- lda #3
- jsr GSOSread
-
- ldx ]jsl
- lda }tool
- beq :1
- cpx #JSL
- bne :1
- lda ]callnum+2
- cmp #^GSOS_STACK ;and TOOL_STACK and TOOL_STACK_ALT
- bne :1
- lda ]callnum
- cmp #TOOL_STACK
- beq :name_tool
- cmp #TOOL_STACK_ALT
- beq :name_tool
- cmp #GSOS_STACK
- bne :1
-
-:name_gsos lda ]operand
- jsr name_GSOS
- bra :0
-:name_tool lda ]operand
- jsr name_TOOL
-:0 bcs :1
- phy
- phx
- incr #4;@omf+`displacement
- incr #4;@omf+`counter
- pea #'_'
- _WriteChar
- _WriteString
- put_cr
- decr #4;]count
- bra :end
-
-:1 ldx ]mark+2
- ldy ]mark
- jsr GSOSset_mark
-:2 lda ]opcode
- ldx ]operand
- jsr print_opcode_3
-
-:end ldx ]count+2
- ldy ]count
- rts
-
-
-**************************************************
-* parse opcodes that accept 4-byte operands. *
-* ---------------------------------------------- *
-* (input) *
-* a - opcode. *
-* x - HOW of number of bytes to disassemble. *
-* y - LOW of number of bytes to disassemble. *
-* (output) *
-* x - HOW of number of bytes to disassemble. *
-* y - LOW of number of bytes to disassemble. *
-**************************************************
-parse_opcode_4 equ *
-]opcode = $a0 ;opcode
-]count = $a2 ;number of bytes to disassemble
-]tmp_count = $a6
-]operand = $aa ;operand of opcode
-
- sta ]opcode
- stx ]count+2
- sty ]count
- stz ]operand+2
-
- cpx #0
- bne :print_opcode
- cpy #4
- bge :print_opcode
- cpy #3
- beq :1
- cpy #2
- beq :1
- clc
- lda @omf+`counter
- adc #4
- tax
- lda @omf+`counter+2
- adc #0
- cmp @omf+`length+2
- blt :0
- cpx @omf+`length
- beq :0
- bge :1
-:0 lda ]opcode
- jsr parse_expr_asm
- bra :2
-:1 lda ]opcode
- ldx ]count
- jsr print_byte
-:2 ldx #0
- txy
- pla
- rts
-
-:print_opcode incr #4;@omf+`displacement
- incr #4;@omf+`counter
- clc
- tdc
- adc #]operand
- tax
- ldy #0
- lda #3
- jsr GSOSread
- lda }tool
- beq :4
- lda ]opcode
- cmp #JSL
- bne :4
- pei ]count+2
- pei ]count
- pei ]operand+2
- pei ]operand
- jsr parse_inline_4
- stx ]tmp_count+2
- sty ]tmp_count
- cpx ]count+2
- bne :3
- cpy ]count
- bne :3
- lda ]opcode
- ldx ]operand+2
- ldy ]operand
- jsr print_opcode_4
- bra :end
-:3 ldx ]tmp_count+2
- ldy ]tmp_count
- stx ]count+2
- sty ]count
- bra :end
-:4 lda ]opcode
- ldx ]operand+2
- ldy ]operand
- jsr print_opcode_4
-
-:end sec
- lda ]count
- sbc #4
- tay
- lda ]count+2
- sbc #0
- tax
- rts
-
-
-**************************************************
-* print opcodes that generate four bytes. *
-* ---------------------------------------------- *
-* (input) *
-* a - opcode. *
-* x - HOW of operand. *
-* y - LOW of operand. *
-**************************************************
-print_opcode_4 equ *
-]opcode = $b0 ;opcode
-]operand = $b2 ;operand of opcode
-]opcode_adr = $b6 ;pointer to information about opcode
-]ROM_handle = $b8 ;handle to ROM equivalent call
-]ROM_ptr = $b8
-]offset = $bc
-
- sta ]opcode
- stx ]operand+2
- sty ]operand
- asl
- tax
- lda ~opcodes,x
- sta ]opcode_adr
-
- lda }tool
- bne :test_mode
- brl :print_opcode
-:test_mode ldy #`mode
- lda (]opcode_adr),y
- cmp #ABSOLUTE_LONG
- beq :print_ROM
- brl :print_opcode
-:print_ROM lda ]operand+2
- cmp #$e0
- bne :0
- ldx ]operand
- ldy #0
- jsr name_ROM
- stx ]ROM_ptr
- sty ]ROM_ptr+2
- bra :1
-:0 ldx ]operand
- ldy ]operand+2
- jsr name_ROM
- stx ]ROM_ptr
- sty ]ROM_ptr+2
-:1 bcs :print_opcode ;if ROM call not found
- phy
- phx
- pea #^print_opcode_4
- clc
- lda ]opcode_adr
- adc #`syntax
- pha
- pea #0
- pea #7
- _TextWriteBlock
- lda #7
- sta ]offset
- lda ]operand+2
- cmp #$e0
- bne :2
- pea #^:e0_str
- pea #:e0_str
- _WriteCString
- inc ]offset
- inc ]offset
- inc ]offset
-:2 _WriteString
- lda []ROM_ptr]
- and #$ff
- adc ]offset
- sta ]offset
- bra :end
-
-:print_opcode clc
- lda ]opcode_adr
- adc #`syntax
- ldx ]operand+2
- ldy ]operand
- jsr printf
- stx ]offset
-
-:end lda }hex
- beq :3
- pea #^blank_str ;separate asm/hex-ascii output
- pea #blank_str
- pea #0
- sec
- lda #32
- sbc ]offset
- pha
- _TextWriteBlock
-:3 lda ]opcode
- ora #$0400
- ldx ]operand+2
- ldy ]operand
- jsr print_hex_ascii
- rts
-
-:e0_str cStr 'e0_'
-
-
-**************************************************
-* parse GS/OS inline calls for opcodes *
-* generating four bytes. *
-* ---------------------------------------------- *
-* (input) *
-* long - number of bytes left to disassemble. *
-* long - value of operand. *
-* (output) *
-* x - HOW of number of bytes to disassemble. *
-* y - LOW of number of bytes to disassemble. *
-**************************************************
-parse_inline_4 equ *
-]callnum = $b0 ;GS/OS call number
-]assembler = $b4 ;temp copy of ~assembler
-]count = $b4 ;number of bytes left to disassemble
-]mark = $b8 ;current offset into OMF file
-]parmblock = $bc ;parameter block number for call
-
- pla ;return address
- plx
- ply
- stx ]callnum
- sty ]callnum+2
- plx
- ply
- stx ]count
- sty ]count+2
- pha ;push return address back on stack
-
- ldx ]callnum
- cpx #GSOS_INLINE
- bne :false
- ldx ]callnum+2
- cpx #^GSOS_INLINE
- beq :parse_inline
-:false ldx ]count+2
- ldy ]count
- rts
-
-:parse_inline jsr GSOSget_mark
- stx ]mark+2
- sty ]mark
-
- ldx ]count+2
- bne :6_bytes
- lda ]count
- cmp #4
- bne :6_bytes
- brl :end
-
-:6_bytes cpx #0
- bne :default
- cmp #6
- beq :0
- bra :default
-:0 read_short ]callnum
- lda ]callnum
- jsr name_GSOS
- bcc :1
- ldx ]mark+2
- ldy ]mark
- jsr GSOSset_mark
- brl :end
-:1 phy
- phx
- incr #2;@omf+`displacement
- incr #2;@omf+`counter
- pea #'_'
- _WriteChar
- _WriteString
- pea #' '
- _WriteChar
- lda ~assembler
- sta ]assembler
- lda #MERLIN
- sta ~assembler
- lda #DC
- jsr parse_expr_asm
- lda ]assembler
- sta ~assembler
- ldx #0
- ldy #4
- rts
-
-:default read_short ]callnum
- read_long ]parmblock
- lda ]callnum
- jsr name_GSOS
- bcc :2
- ldx ]mark+2
- ldy ]mark
- jsr GSOSset_mark
- brl :end
-:2 phy
- phx
- pea #'_'
- _WriteChar
- _WriteString
- pea #' '
- _WriteChar
- pea #'$'
- _WriteChar
- lda #6
- ldx ]parmblock
- ldy ]parmblock+2
- jsr print_fix_long_hex
- put_cr
- incr #6;@omf+`displacement
- incr #6;@omf+`counter
- decr #6;]count
-
-:end ldx ]count+2
- ldy ]count
- rts
-
-
-**************************************************
-* output hex and ascii equivalent of operand *
-* bytes. *
-* ---------------------------------------------- *
-* (input) *
-* a - LOB opcode. *
-* - HOB number of bytes generated by opcode. *
-* x - HOW of operand. *
-* y - LOW of operand. *
-**************************************************
-print_hex_ascii equ *
-]opcode = $b0 ;opcode
-]operand = $b2 ;operand
-]opcode_adr = $b6 ;pointer to information about opcode
-]num_bytes = $b8 ;number of bytes generated by opcode
-
- stx ]operand+2
- sty ]operand
- tax
- xba
- and #$ff
- sta ]num_bytes
- txa
- and #$ff
- sta ]opcode
- asl
- tax
- lda ~opcodes,x
- sta ]opcode_adr
-
- lda }hex
- bne :print_hex
- put_cr
- rts
-
-:print_hex pea #' '
- _WriteChar
- lda ]num_bytes ;parse opcode depending on number of
- cmp #1 ;bytes generated
- bne :2_bytes
- ldx ]opcode
- jsr print_fix_char_hex
- pea #^:space_1
- pea #:space_1
- _WriteCString
- lda ]opcode
- jsr print_ascii
- brl :end
-:2_bytes cmp #2
- bne :3_bytes
- ldx ]opcode
- jsr print_fix_char_hex
- pea #' '
- _WriteChar
- ldx ]operand
- jsr print_fix_char_hex
- pea #^:space_2
- pea #:space_2
- _WriteCString
- lda ]opcode
- jsr print_ascii
- lda ]operand
- jsr print_ascii
- brl :end
-:3_bytes cmp #3
- bne :4_bytes
- ldx ]opcode
- jsr print_fix_char_hex
- pea #' '
- _WriteChar
- lda ]operand
- and #$ff
- tax
- jsr print_fix_char_hex
- pea #' '
- _WriteChar
- lda ]operand
- xba
- and #$ff
- pha
- tax
- jsr print_fix_char_hex
- pea #^:space_3
- pea #:space_3
- _WriteCString
- lda ]opcode
- jsr print_ascii
- lda ]operand
- and #$ff
- jsr print_ascii
- pla
- jsr print_ascii
- bra :end
-:4_bytes ldx ]opcode
- jsr print_fix_char_hex
- pea #' '
- _WriteChar
- lda ]operand
- and #$ff
- tax
- jsr print_fix_char_hex
- pea #' '
- _WriteChar
- lda ]operand
- xba
- and #$ff
- pha
- tax
- jsr print_fix_char_hex
- pea #' '
- _WriteChar
- ldx ]operand+2
- jsr print_fix_char_hex
- pea #^:space_4
- pea #:space_4
- _WriteCString
- lda ]opcode
- jsr print_ascii
- lda ]operand
- and #$ff
- jsr print_ascii
- pla
- jsr print_ascii
- lda ]operand+2
- jsr print_ascii
-
-:end put_cr
- rts
-
-:space_1 cStr ' - '
-:space_2 cStr ' - '
-:space_3 cStr ' - '
-:space_4 cStr ' - '
-
-
-**************************************************
-* print ascii equivalent of hex byte, or '.' if *
-* hex is non-printing character. *
-* ---------------------------------------------- *
-* (input) *
-* a - hex byte. *
-**************************************************
-print_ascii equ *
-
- jsr isprint
- bcc :0
- lda #'.'
-:0 pha
- _WriteChar
- rts
-
-
-**************************************************
-* parse opcode with expression as its operand. *
-* ---------------------------------------------- *
-* (input) *
-* a - opcode. *
-**************************************************
-parse_expr_asm equ *
-]opcode = $c0 ;opcode
-]record = $c2 ;OMF record number
-]assembler = $c4 ;tmp copy of ~assembler
-]opcode_adr = $c6 ;address of opcode data
-]syntax_str = $c8 ;address of opcode syntax
-]opcode_str = $ca
-
- sta ]opcode
- stz ]record
-
- read_char ]record
- lda ]record
- jsr recognize_record
- bcc :parse_expr
- lda ]opcode
- cmp #DC
- bne :parse_mode
- lda ]record
- ldx #0
- ldy #FALSE
- jsr parse_record
- cpx #0
- beq :0
- put_cr
-:0 brl :end
-
-:parse_expr lda ]opcode
- ldx #1
- jsr print_byte
- lda ]record
- cmp #END
- beq :2
- jsr print_offset
- lda ]record
- ldx #0
- ldy #FALSE
- jsr parse_record
- beq :2
- lda ~assembler
- cmp #MERLIN
- beq :1
- pea #'''
- _WriteChar
-:1 put_cr
-:2 brl :end
-
-:parse_mode lda ]opcode
- asl
- tax
- lda ~opcodes,x
- sta ]opcode_adr
-
- lda ~assembler ;make copy of ~assembler to restore
- sta ]assembler ;after change below
- clc
- lda ]opcode_adr
- adc #`syntax
- sta ]syntax_str
- ldy #`mode
- lda (]opcode_adr),y
- cmp #BLOCK_MOVE
- beq :test_mode
- lda #'%'
- ldx ]syntax_str
- jsr strchr
- stx ]opcode_str
-
-:test_mode ldy #`mode
- lda (]opcode_adr),y
- cmp #ABSOLUTE_LONG
- beq :absolute_long
- cmp #ABSOLUTE_LONG_INDEX_X
- bne :block_move
-:absolute_long pea #^parse_expr_asm
- pei ]syntax_str
- pea #0
- sec
- lda ]opcode_str
- sbc ]syntax_str
- dec
- pha
- _TextWriteBlock
- pea #' '
- _WriteChar
- ldx #'>'
- lda ~assembler
- cmp #MERLIN
- beq :3
- ldx #'|'
-:3 phx
- _WriteChar
- lda #MERLIN
- sta ~assembler
- lda ]record
- ldx #0
- ldy #FALSE
- jsr parse_record
- clc ;move past '%c$%6'
- lda ]opcode_str
- adc #5
- sta ]opcode_str
- pea #^parse_expr_asm
- pei ]opcode_str
- _WriteCString
- brl :end_parse
-
-:block_move cmp #BLOCK_MOVE
- bne :default
- lda #'$'
- ldx ]syntax_str
- jsr strchr
- stx ]opcode_str
- pea #^parse_expr_asm
- pei ]syntax_str
- pea #0
- sec
- lda ]opcode_str
- sbc ]syntax_str
- dec
- pha
- _TextWriteBlock
- pea #' '
- _WriteChar
- lda ]record
- ldx #0
- ldy #FALSE
- jsr parse_record
- stx ]offset
- pea #','
- _WriteChar
- pea #' '
- _WriteChar
- read_char ]record
- lda ]record
- ldx ]offset
- inx
- inx
- ldy #FALSE
- jsr parse_record
- bra :end_parse
-
-:default lda #MERLIN
- sta ~assembler
- pea #^parse_expr_asm
- pei ]syntax_str
- pea #0
- sec
- lda ]opcode_str
- sbc ]syntax_str
- dec
- pha
- _TextWriteBlock
- lda ]record
- ldx #0
- ldy #FALSE
- jsr parse_record
- inc ]opcode_str
- inc ]opcode_str
- pea #^parse_expr_asm
- pei ]opcode_str
- _WriteCString
-:end_parse put_cr
- lda ]assembler
- sta ~assembler
- incr @omf+`counter
-
-:end incr @omf+`displacement
- rts
-
-
-**************************************************
-* print byte as hex and ascii equivalent. *
-* ---------------------------------------------- *
-* (input) *
-* a - opcode. *
-* x - number of bytes to print. *
-**************************************************
-print_byte equ *
-]opcode = $e0 ;opcode value
-]count = $e2 ;number of bytes to print
-]byte = $e4 ;data value
-]offset = $e6
-
- sta ]opcode
- stx ]count
- stz ]byte
-
- lda #2
- sta ]offset
- incr ]count;@omf+`displacement
- incr ]count;@omf+`counter
- lda ~assembler
- cmp #MERLIN
- bne :orca
- pea #^hex_asm
- pea #hex_asm
- bra :2
-:orca pea #^dc_h_asm
- pea #dc_h_asm
- inc ]offset
- inc ]offset
-:2 _WriteCString
- ldx ]opcode
- jsr print_fix_char_hex
-
- lda ]opcode
- ldx ]count
- sta :hex,x
-:read_loop dex
- beq :3
- phx
- read_char ]byte
- ldx ]byte
- jsr print_fix_char_hex
- plx
- shorta
- lda ]byte
- sta :hex,x
- longa
- inc ]offset
- inc ]offset
- bra :read_loop
-
-:3 lda ~assembler
- cmp #ORCA
- bne :4
- pea #'''
- _WriteChar
- inc ]offset
-:4 lda }hex
- bne :hex_ascii
- brl :end
-:hex_ascii pea #^blank_str
- pea #blank_str
- pea #0
- sec
- lda #26
- sbc ]offset
- pha
- _TextWriteBlock
-
- ldy ]count
-:hex_loop phy
- lda :hex,y
- and #$ff
- tax
- jsr print_fix_char_hex
- pea #' '
- _WriteChar
- ply
- dey
- bne :hex_loop
-
- pea #^blank_str ;separate hex and ascii values
- pea #blank_str
- pea #0
- lda ]count ;12 - (3 * ]count) is number of
- asl ;blanks separating hex and ascii
- clc ;output
- adc ]count
- pha
- sec
- lda #12
- sbc 1,s
- sta 1,s
- _TextWriteBlock
-
- pea #'-'
- _WriteChar
- pea #' '
- _WriteChar
- ldy ]count
-:print_loop phy
- pea #'.' ;character for non-printing ascii code
- lda :hex,y
- and #$ff
- jsr isprint
- bcs :print_char ;use default if non-printing character
- lda :hex,y ;else output character
- and #$ff
- sta 1,s
-:print_char _WriteChar
- ply
- dey
- bne :print_loop
-
-:end put_cr
- rts
-
-:hex ds 6 ;bytes read in
-
-
-**************************************************
-* modify flags in coff depending on REP and SEP *
-* opcodes. *
-* ---------------------------------------------- *
-* (input) *
-* a - opcode. *
-* x - operand. *
-**************************************************
-parse_rep_sep equ *
-]opcode = $c0 ;opcode
-]operand = $c2 ;opcode operand
-
- sta ]opcode
- stx ]operand
-
- cmp #REP
- bne :sep
- txa
- and #LONGA
- beq :test_rep_longi
- stz }shorta
- lda ~assembler
- cmp #ORCA
- bne :test_rep_longi
- lda #LONGA
- jsr asm_status_bit
-:test_rep_longi lda ]operand
- and #LONGI
- beq :0
- stz }shorti
- lda ~assembler
- cmp #ORCA
- bne :0
- jsr asm_status_bit
-:0 lda ~assembler
- cmp #MERLIN
- bne :end
- lda #LONGI
- jmp asm_status_bit
-
-:sep lda ]operand
- and #LONGA
- beq :test_sep_longi
- lda #TRUE
- sta }shorta
- lda ~assembler
- cmp #ORCA
- bne :test_sep_longi
- lda #LONGA
- jsr asm_status_bit
-:test_sep_longi lda ]operand
- and #LONGI
- beq :1
- lda #TRUE
- sta }shorti
- lda ~assembler
- cmp #ORCA
- bne :1
- jsr asm_status_bit
-:1 lda ~assembler
- cmp #MERLIN
- bne :end
- lda #LONGA
- jmp asm_status_bit
-:end rts
-
-
-**************************************************
-* test OMF record to parse. *
-* ---------------------------------------------- *
-* (input) *
-* a - record number. *
-* (output) *
-* c - set if record not recognized. *
-**************************************************
-recognize_record equ *
-
- cmp #USING
- beq :true
- cmp #STRONG
- beq :true
- cmp #GLOBAL
- beq :true
- cmp #GEQU
- beq :true
- cmp #MEM
- beq :true
- cmp #LOCAL
- beq :true
- cmp #EQU
- beq :true
- cmp #DS
- beq :true
- cmp #LCONST
- beq :true
- cmp #$01
- blt :true
- cmp #$e0
- bge :false
-
-:true clc
- rts
-:false sec
- rts
-
-
-**************************************************
-* parse type of label. *
-* ---------------------------------------------- *
-* (input) *
-* a - LOB label length. *
-* HOB label type. *
-* x - LOW handle of label name. *
-* y - HOW handle of label name. *
-**************************************************
-parse_type_attribute ent
-]type = $a0 ;label type
-]length = $a2 ;label length
-]length_type = $a4 ;length and type
-]label_handle = $a6 ;handle to label name
-
- sta ]length_type
- stx ]label_handle
- sty ]label_handle+2
- tax
- and #$ff
- sta ]length
- txa
- xba
- and #$ff
- sta ]type
-
- sta @parse_data+`data_type
- cmp #'A' ;address-type
- bne :character
- lda ]length
- ldx ]label_handle+2
- ldy ]label_handle
- jsr parse_GLOBAL_type_A
- rts
-:character cmp #'C' ;character-type
- bne :double_precision
- ldx ]label_handle+2
- ldy ]label_handle
- jsr parse_GLOBAL_type_C
- rts
-:double_precision cmp #'D' ;double-precision floating-point
- bne :floating_point
- lda ]length
- ldx ]label_handle+2
- ldy ]label_handle
- jsr parse_GLOBAL_type_D
- rts
-:floating_point cmp #'F' ;floating-point
- bne :hexadecimal
- lda ]length
- ldx ]label_handle+2
- ldy ]label_handle
- jsr parse_GLOBAL_type_F
- rts
-:hexadecimal cmp #'H' ;hexadecimal-type
- bne :integer
- ldx ]label_handle+2
- ldy ]label_handle
- jsr parse_GLOBAL_type_H
- rts
-:integer cmp #'I' ;integer
- bne :reference_adr
- lda ]length
- ldx ]label_handle+2
- ldy ]label_handle
- jsr parse_GLOBAL_type_I
- rts
-:reference_adr cmp #'K' ;reference-address
- bne :soft_reference
- ldx ]label_handle+2
- ldy ]label_handle
- jsr parse_GLOBAL_type_K
- rts
-:soft_reference cmp #'L' ;soft-reference
- bne :assembler
- lda ]length
- ldx ]label_handle+2
- ldy ]label_handle
- jsr parse_GLOBAL_type_L
- rts
-:assembler cmp #'N' ;assembler
- bne :ds
- ldx ]label_handle+2
- ldy ]label_handle
- jsr parse_GLOBAL_type_N
- rts
-:ds cmp #'S' ;DS
- bne :end
- ldx ]label_handle+2
- ldy ]label_handle
- jsr parse_GLOBAL_type_S
-:end rts
-
-
-**************************************************
-* parse address-type DC statement. *
-* ---------------------------------------------- *
-* (input) *
-* a - label length. *
-* x - HOW handle of label name. *
-* y - LOW handle of label name. *
-**************************************************
-parse_GLOBAL_type_A equ *
-]label_handle = $b0 ;handle to label name
-]label_ptr = $b4
-]label_len = $b8
-]record = $b0 ;record number
-]const_count = $b0 ;counter for CONST
-]edge = $b2 ;right margin
-]num_char = $b4 ;length of output
-]adr_value = $b6 ;address value read in
-]count = $b8 ;number of address values to display
-
- sta ]count
- sta @parse_data+`count
- sta @parse_data+`on ;enable flag to parse data
- stx ]label_handle+2
- sty ]label_handle
-
- lda []label_handle]
- sta ]label_ptr
- ldy #2
- lda []label_handle],y
- sta ]label_ptr+2
-
- lda #0
- ldx }nooffset
- beq :0
- lda #16
-:0 clc
- adc #ADDRESS_EDGE
- sta ]edge
-
- pei ]label_ptr+2
- pei ]label_ptr
- pea #2
- lda []label_ptr]
- sta ]label_len
- pha
- _TextWriteBlock
- lda ]label_len
- cmp #12
- blt :1
- pea #' '
- _WriteChar
- bra :2
-:1 pea #^blank_str
- pea #blank_str
- pea #0
- sec
- lda #12
- sbc ]label_len
- pha
- _TextWriteBlock
-
-:2 ldx ]edge
- lda ~assembler
- cmp #MERLIN
- beq :3
- dex
- dex
- dex
- dex
-:3 stx @parse_data+`edge
- stx ]edge
- stz ]adr_value
- stz ]record
- stz ]num_char
-
-:read_record read_char ]record ;read record to parse
- lda ]record
- ldx ]num_char
- jsr parse_GLOBAL_type
- beq :print_const
- lda @parse_data+`count
- sta ]count
- beq :end_read
-:4 jsr print_offset
- pea #^space_12
- pea #space_12
- _WriteCString
- bra :read_record
-:end_read brl :rts
-
-:print_const stz ]num_char
- ldx #^db_asm
- ldy #db_asm
- lda ~assembler
- cmp #MERLIN
- beq :5
- ldx #^dc_a_asm
- ldy #dc_a_asm
-:5 phx
- phy
- _WriteCString
-
- lda ~assembler
- cmp #MERLIN
- beq :loop
- pea #'1'
- _WriteChar
- pea #'''
- _WriteChar
-:loop read_char ]adr_value
- ldx ]adr_value
- jsr print_char_dec
- inc ;add comma character
- clc
- adc ]num_char
- sta ]num_char
- dec ]const_count
- dec @parse_data+`count
-
- incr @omf+`displacement
- incr @omf+`counter
-
- lda ]num_char
- cmp ]edge
- blt :9
- beq :9
- lda ~assembler
- cmp #MERLIN
- beq :6
- pea #'''
- _WriteChar
-:6 put_cr
- lda @parse_data+`count ;end if no more records to display
- beq :rts
- lda ]const_count ;if at end of CONST record, read next
- bne :7 ;record
- stz ]num_char
- brl :4
-:7 stz ]num_char
- jsr print_offset
- pea #^space_12
- pea #space_12
- _WriteCString
- ldx #^db_asm
- ldy #db_asm
- lda ~assembler
- cmp #MERLIN
- beq :8
- ldx #^:dc_a_asm
- ldy #:dc_a_asm
-:8 phx
- phy
- _WriteCString
- brl :loop
-:9 lda ]const_count
- beq :end
- pea #','
- _WriteChar
- brl :loop
-
-:end lda ]num_char
- beq :rts
- lda ~assembler
- cmp #MERLIN
- beq :10
- pea #'''
- _WriteChar
-:10 put_cr
- lda @parse_data+`count
- beq :rts
- brl :4
-:rts stz @parse_data+`on ;turn off parsing of data
- rts
-
-:dc_a_asm asc !dc a1'!,00
-
-
-**************************************************
-* parse character-type DC statement. *
-* ---------------------------------------------- *
-* (input) *
-* x - HOW handle of label name. *
-* y - LOW handle of label name. *
-**************************************************
-parse_GLOBAL_type_C equ *
-]label_handle = $b0 ;handle to label name
-]label_ptr = $b4
-]record = $b8 ;record number
-]count = $b8 ;number of characters to display
-]edge = $ba ;right margin
-]num_read = $bc ;number of bytes read
-
- stx ]label_handle+2
- sty ]label_handle
-
- lda []label_handle]
- sta ]label_ptr
- tax
- ldy #2
- lda []label_handle],y
- sta ]label_ptr+2
-
- pha
- phx
- pea #2
- lda []label_ptr]
- sta ]label_len
- pha
- _TextWriteBlock
- lda ]label_len
- cmp #12
- blt :0
- pea #' '
- _WriteChar
- bra :1
-:0 pea #^blank_str
- pea #blank_str
- pea #0
- sec
- lda #12
- sbc ]label_len
- pha
- _TextWriteBlock
-
-:1 stz ]record
- read_char ]record
-
- lda ]record
- cmp #DS
- beq :3
- ldx #^:asc
- ldy #:asc
- lda ~assembler
- cmp #MERLIN
- beq :2
- ldx #^:dc_c
- ldy #:dc_c
-:2 phx
- phy
- _WriteCString
-
-:3 lda ]record
- ldx #0
- jsr parse_GLOBAL_type
- beq :display_char
- rts
-
-:display_char lda #0
- ldx }nooffset
- beq :4
- lda #16
-:4 clc
- adc #CHAR_EDGE
- sta ]edge
-
-:loop lda ]count ;if number of bytes to read is less
- cmp ]edge ;than the default, output only
- blt :5 ;default many bytes
- lda ]edge ;read in default number of characters
-:5 ldx #:hex
- ldy #^:hex
- jsr GSOSread
- stx ]num_read
-
- ldx #0 ;output characters just read
-:print_char phx
- lda :hex,x
- and #$ff
- pha
- _WriteChar
- plx
- inx
- cpx ]num_read
- blt :print_char
-
- pea #'''
- _WriteChar
- put_cr
-
- sec
- lda ]count
- sbc ]num_read
- sta ]count
- incr ]num_read;@omf+`counter ;update counter
- incr ]num_read;@omf+`displacement ;update offset into OMF file
-
- lda ]count
- beq :end
- jsr print_offset
- pea #^space_12
- pea #space_12
- _WriteCString
- ldx #^:asc
- ldy #:asc
- lda ~assembler
- cmp #MERLIN
- beq :6
- ldx #^:dc_c
- ldy #:dc_c
-:6 phx
- phy
- _WriteCString
- brl :loop
-:end rts
-
-:asc asc !asc '!,00
-:dc_c asc !dc c'!,00
-:hex ds CHAR_EDGE+17 ;space for input string
-
-
-**************************************************
-* parse double-precision floating-point DC *
-* statement. *
-* ---------------------------------------------- *
-* (input) *
-* a - number of double floats to display. *
-* x - HOW handle of label name. *
-* y - LOW handle of label name. *
-**************************************************
-parse_GLOBAL_type_D equ *
-]label_handle = $b0 ;handle to label name
-]label_ptr = $b4
-]label_len = $b8
-]const_count = $b0 ;counter for CONST
-]edge = $b2 ;right margin
-]num_char = $b4 ;length of output
-]double_value = $b6 ;double value read in
-]count = $be ;number of double values to display
-
- sta ]count
- lsr
- lsr
- bcs :extended
- lsr
- bcc :0
-:extended jmp parse_GLOBAL_type_E
-:0 stx ]label_handle+2
- sty ]label_handle
-
- lda []label_handle]
- sta ]label_ptr
- ldy #2
- lda []label_handle],y
- sta ]label_ptr+2
-
- lda #0
- ldx }nooffset
- beq :1
- lda #16
-:1 clc
- adc #DOUBLE_EDGE-3
- sta ]edge
-
- pei ]label_ptr+2
- pei ]label_ptr
- pea #2
- lda []label_ptr]
- sta ]label_len
- pha
- _TextWriteBlock
- lda ]label_len
- cmp #12
- blt :2
- pea #' '
- _WriteChar
- bra :3
-:2 pea #^blank_str
- pea #blank_str
- pea #0
- sec
- lda #12
- sbc ]label_len
- pha
- _TextWriteBlock
-
-:3 pea #^dc_d_asm
- pea #dc_d_asm
- _WriteCString
-
- stz ]const_count
- stz ]num_char
-
- read_char ]const_count ;read record to parse
- lsr ]const_count ;since we read in 8 bytes
- lsr ]const_count
- lsr ]const_count
-:loop read_double ]double_value
- lda #]double_value
- jsr print_double
- inc ;add comma character
- clc
- adc ]num_char
- sta ]num_char
- dec ]const_count
-
- incr #8;@omf+`displacement
- incr #8;@omf+`counter
-
- lda ]num_char
- cmp ]edge
- blt :4
- beq :4
- pea #'''
- _WriteChar
- put_cr
- lda ]const_count ;if not at end of CONST record, read
- beq :rts ;next record
- stz ]num_char
- jsr print_offset
- pea #^space_12
- pea #space_12
- _WriteCString
- pea #^dc_d_asm
- pea #dc_d_asm
- _WriteCString
- brl :loop
-:4 lda ]const_count
- beq :end
- pea #','
- _WriteChar
- brl :loop
-
-:end lda ]num_char
- beq :rts
- pea #'''
- _WriteChar
- put_cr
-:rts rts
-
-
-**************************************************
-* parse extended floating-point DC statement. *
-* ---------------------------------------------- *
-* (input) *
-* a - number of extended floats to display. *
-* x - HOW handle of label name. *
-* y - LOW handle of label name. *
-**************************************************
-parse_GLOBAL_type_E equ *
-]label_handle = $b0 ;handle to label name
-]label_ptr = $b4
-]label_len = $b8
-]const_count = $b0 ;counter for CONST
-]edge = $b2 ;right margin
-]num_char = $b4 ;length of output
-]extended_value = $b6 ;extended value read in
-]count = $be ;number of extended values to display
-
- sta ]count
- stx ]label_handle+2
- sty ]label_handle
-
- lda []label_handle]
- sta ]label_ptr
- ldy #2
- lda []label_handle],y
- sta ]label_ptr+2
-
- lda #0
- ldx }nooffset
- beq :0
- lda #16
-:0 clc
- adc #EXTENDED_EDGE-3
- sta ]edge
-
- pei ]label_ptr+2
- pei ]label_ptr
- pea #2
- lda []label_ptr]
- sta ]label_len
- pha
- _TextWriteBlock
- lda ]label_len
- cmp #12
- blt :1
- pea #' '
- _WriteChar
- bra :2
-:1 pea #^blank_str
- pea #blank_str
- pea #0
- sec
- lda #12
- sbc ]label_len
- pha
- _TextWriteBlock
-
-:2 ldx #^flo_asm
- ldy #flo_asm
- lda ~assembler
- cmp #MERLIN
- beq :3
- ldx #^dc_e_asm
- ldy #dc_e_asm
-:3 phx
- phy
- _WriteCString
-
- stz ]const_count
- stz ]num_char
-
- read_char ]const_count ;read record to parse
-:loop read_extended ]extended_value
- lda #]extended_value
- jsr print_extended
- inc ;add comma character
- clc
- adc ]num_char
- sta ]num_char
- sec
- lda ]const_count
- sbc #10
- sta ]const_count
-
- incr #10;@omf+`displacement
- incr #10;@omf+`counter
-
- lda ]num_char
- cmp ]edge
- blt :5
- beq :5
- pea #'''
- _WriteChar
- put_cr
- lda ]const_count ;if not at end of CONST record, read
- beq :rts ;next record
- stz ]num_char
- jsr print_offset
- pea #^space_12
- pea #space_12
- _WriteCString
- ldx #^flo_asm
- ldy #flo_asm
- lda ~assembler
- cmp #MERLIN
- beq :4
- ldx #^dc_e_asm
- ldy #dc_e_asm
-:4 phx
- phy
- _WriteCString
- brl :loop
-:5 lda ]const_count
- beq :end
- pea #','
- _WriteChar
- brl :loop
-
-:end lda ]num_char
- beq :rts
- pea #'''
- _WriteChar
- put_cr
-:rts rts
-
-
-**************************************************
-* parse floating-point-type DC statement. *
-* ---------------------------------------------- *
-* (input) *
-* a - number of floats to display. *
-* x - HOW handle of label name. *
-* y - LOW handle of label name. *
-**************************************************
-parse_GLOBAL_type_F equ *
-]label_handle = $b0 ;handle to label name
-]label_ptr = $b4
-]label_len = $b8
-]const_count = $b0 ;counter for CONST
-]edge = $b2 ;right margin
-]num_char = $b4 ;length of output
-]float_value = $b6 ;float value read in
-]count = $ba ;number of integer values to display
-
- sta ]count
- stx ]label_handle+2
- sty ]label_handle
-
- lda []label_handle]
- sta ]label_ptr
- ldy #2
- lda []label_handle],y
- sta ]label_ptr+2
-
- lda #0
- ldx }nooffset
- beq :0
- lda #16
-:0 clc
- adc #FLOAT_EDGE-3
- sta ]edge
-
- pei ]label_ptr+2
- pei ]label_ptr
- pea #2
- lda []label_ptr]
- sta ]label_len
- pha
- _TextWriteBlock
- lda ]label_len
- cmp #12
- blt :1
- pea #' '
- _WriteChar
- bra :2
-:1 pea #^blank_str
- pea #blank_str
- pea #0
- sec
- lda #12
- sbc ]label_len
- pha
- _TextWriteBlock
-
-:2 pea #^dc_f_asm
- pea #dc_f_asm
- _WriteCString
-
- stz ]num_char
- stz ]const_count
-
- read_char ]const_count ;number of bytes
- lsr ]const_count ;since we read in 4 bytes
- lsr ]const_count
-:loop read_float ]float_value
- lda #]float_value
- jsr print_float
- inc ;add comma character
- clc
- adc ]num_char
- sta ]num_char
- dec ]const_count
-
- incr #4;@omf+`displacement
- incr #4;@omf+`counter
-
- lda ]num_char
- cmp ]edge
- blt :3
- beq :3
- pea #'''
- _WriteChar
- put_cr
- lda ]const_count ;if at end of CONST record, read next
- beq :rts ;record
- stz ]num_char
- jsr print_offset
- pea #^space_12
- pea #space_12
- _WriteCString
- pea #^dc_f_asm
- pea #dc_f_asm
- _WriteCString
- brl :loop
-:3 lda ]const_count
- beq :end
- pea #','
- _WriteChar
- brl :loop
-
-:end lda ]num_char
- beq :rts
- pea #'''
- _WriteChar
- put_cr
-:rts rts
-
-
-**************************************************
-* parse hexadecimal-type DC statement. *
-* ---------------------------------------------- *
-* (input) *
-* x - HOW handle of label name. *
-* y - LOW handle of label name. *
-**************************************************
-parse_GLOBAL_type_H equ *
-]label_handle = $b0 ;handle to label name
-]label_ptr = $b4
-]record = $b8 ;record number
-]count = $b8 ;number of characters to display
-]edge = $ba ;right margin
-]num_read = $bc ;number of bytes read
-
- stx ]label_handle+2
- sty ]label_handle
-
- lda []label_handle]
- sta ]label_ptr
- tax
- ldy #2
- lda []label_handle],y
- sta ]label_ptr+2
-
- pha
- phx
- pea #2
- lda []label_ptr]
- sta ]label_len
- pha
- _TextWriteBlock
- lda ]label_len
- cmp #12
- blt :0
- pea #' '
- _WriteChar
- bra :1
-:0 pea #^blank_str
- pea #blank_str
- pea #0
- sec
- lda #12
- sbc ]label_len
- pha
- _TextWriteBlock
-
-:1 stz ]record
- read_char ]record
-
- lda ]record
- cmp #DS
- beq :3
- ldx #^hex_asm
- ldy #hex_asm
- lda ~assembler
- cmp #MERLIN
- beq :2
- ldx #^dc_h_asm
- ldy #dc_h_asm
-:2 phx
- phy
- _WriteCString
-
-:3 lda ]record
- ldx #0
- jsr parse_GLOBAL_type
- beq :display_char
- rts
-
-:display_char lda #0
- ldx }nooffset
- beq :4
- lda #16
-:4 clc
- adc #HEX_EDGE
- sta ]edge
-
-:loop lda ]count ;if number of bytes to read is less
- cmp ]edge ;than the default, output only
- blt :5 ;default many bytes
- lda ]edge ;read in default number of characters
-:5 ldx #:hex
- ldy #^:hex
- jsr GSOSread
- stx ]num_read
-
- ldx #0 ;output characters just read
-:print_char phx
- lda :hex,x
- and #$ff
- tax
- jsr print_fix_char_hex
- plx
- inx
- cpx ]num_read
- blt :print_char
-
- lda ~assembler
- cmp #MERLIN
- beq :cr
- pea #'''
- _WriteChar
-:cr put_cr
-
- sec
- lda ]count
- sbc ]num_read
- sta ]count
- incr ]num_read;@omf+`counter ;update counter
- incr ]num_read;@omf+`displacement ;update offset into OMF file
-
- lda ]count
- beq :end
- jsr print_offset
- pea #^space_12
- pea #space_12
- _WriteCString
- ldx #^hex_asm
- ldy #hex_asm
- lda ~assembler
- cmp #MERLIN
- beq :6
- ldx #^dc_h_asm
- ldy #dc_h_asm
-:6 phx
- phy
- _WriteCString
- brl :loop
-:end rts
-
-:hex ds HEX_EDGE+17 ;space for input string
-
-
-**************************************************
-* parse integer-type DC statement. *
-* ---------------------------------------------- *
-* (input) *
-* a - number of integers to display. *
-* x - HOW handle of label name. *
-* y - LOW handle of label name. *
-**************************************************
-parse_GLOBAL_type_I equ *
-]label_handle = $b0 ;handle to label name
-]label_ptr = $b4
-]label_len = $b8
-]record = $b0 ;record number
-]const_count = $b0 ;counter for CONST
-]edge = $b2 ;right margin
-]num_char = $b4 ;length of output
-]int_value = $b6 ;integer value read in
-]count = $b8 ;number of integer values to display
-
- sta ]count
- sta @parse_data+`count
- sta @parse_data+`on ;enable flag to parse data
- stx ]label_handle+2
- sty ]label_handle
-
- lda []label_handle]
- sta ]label_ptr
- ldy #2
- lda []label_handle],y
- sta ]label_ptr+2
-
- lda #0
- ldx }nooffset
- beq :0
- lda #16
-:0 clc
- adc #INT_EDGE
- sta ]edge
-
- pei ]label_ptr+2
- pei ]label_ptr
- pea #2
- lda []label_ptr]
- sta ]label_len
- pha
- _TextWriteBlock
- lda ]label_len
- cmp #12
- blt :1
- pea #' '
- _WriteChar
- bra :2
-:1 pea #^blank_str
- pea #blank_str
- pea #0
- sec
- lda #12
- sbc ]label_len
- pha
- _TextWriteBlock
-
-:2 ldx ]edge
- lda ~assembler
- cmp #MERLIN
- beq :3
- dex
- dex
- dex
- dex
-:3 stx @parse_data+`edge
- stx ]edge
- stz ]int_value
- stz ]record
- stz ]num_char
-
-:read_record read_char ]record ;read record to parse
- lda ]record
- ldx ]num_char
- jsr parse_GLOBAL_type
- beq :print_const
- lda @parse_data+`count
- sta ]count
- beq :end_read
-:4 jsr print_offset
- pea #^space_12
- pea #space_12
- _WriteCString
- bra :read_record
-:end_read brl :rts
-
-:print_const stz ]num_char
- ldx #^db_asm
- ldy #db_asm
- lda ~assembler
- cmp #MERLIN
- beq :5
- ldx #^dc_i_asm
- ldy #dc_i_asm
-:5 phx
- phy
- _WriteCString
-
- lda ~assembler
- cmp #MERLIN
- beq :loop
- pea #'1'
- _WriteChar
- pea #'''
- _WriteChar
-:loop read_char ]int_value
- ldx ]int_value
- jsr print_char_dec
- inc ;add comma character
- clc
- adc ]num_char
- sta ]num_char
- dec ]const_count
- dec @parse_data+`count
-
- incr @omf+`displacement
- incr @omf+`counter
-
- lda ]num_char
- cmp ]edge
- blt :9
- beq :9
- lda ~assembler
- cmp #MERLIN
- beq :6
- pea #'''
- _WriteChar
-:6 put_cr
- lda @parse_data+`count ;end if no more records to display
- beq :rts
- stz ]num_char
- lda ]const_count ;if at end of CONST record, read next
- bne :7 ;record
- brl :4
-:7 jsr print_offset
- pea #^space_12
- pea #space_12
- _WriteCString
- ldx #^db_asm
- ldy #db_asm
- lda ~assembler
- cmp #MERLIN
- beq :8
- ldx #^:dc_i_asm
- ldy #:dc_i_asm
-:8 phx
- phy
- _WriteCString
- brl :loop
-:9 lda ]const_count
- beq :end
- pea #','
- _WriteChar
- brl :loop
-
-:end lda ]num_char
- beq :rts
- lda ~assembler
- cmp #MERLIN
- beq :10
- pea #'''
- _WriteChar
-:10 put_cr
- lda @parse_data+`count
- beq :rts
- brl :4
-:rts stz @parse_data+`on ;turn off parsing of data
- rts
-
-:dc_i_asm asc !dc i1'!,00
-
-
-**************************************************
-* parse reference-address-type DC statement. *
-* ---------------------------------------------- *
-* (input) *
-* x - HOW handle of label name. *
-* y - LOW handle of label name. *
-**************************************************
-parse_GLOBAL_type_K equ *
-]label_handle = $b0 ;handle to name of label
-]label_ptr = $b4
-]label_len = $b8 ;length of label
-]record = $b8 ;record number
-
- stx ]label_handle+2
- sty ]label_handle
-
- lda []label_handle]
- sta ]label_ptr
- tax
- ldy #2
- lda []label_handle],y
- sta ]label_ptr+2
-
- pha
- phx
- pea #2
- lda []label_ptr]
- sta ]label_len
- pha
- _TextWriteBlock
- lda ]label_len
- cmp #12
- blt :0
- pea #' '
- _WriteChar
- bra :1
-:0 pea #^blank_str
- pea #blank_str
- pea #0
- sec
- lda #12
- sbc ]label_len
- pha
- _TextWriteBlock
-
-:1 stz ]record
- read_char ]record
-
- lda ]record
- jmp parse_STRONG
-
-
-**************************************************
-* parse soft-reference-type DC statement. *
-* ---------------------------------------------- *
-* (input) *
-* a - length. *
-* x - HOW handle of label name. *
-* y - LOW handle of label name. *
-**************************************************
-parse_GLOBAL_type_L equ *
-]label_handle = $b0 ;handle to label name
-]label_ptr = $b4
-]label_len = $b8
-]record = $b0 ;record number
-]const_count = $b0 ;counter for CONST
-]edge = $b2 ;right margin
-]num_char = $b4 ;length of output
-]soft_value = $b6 ;reference value read in
-]count = $b8 ;number of soft-reference values to display
-]tmp_asm = $ba ;copy of ~assembler
-
- sta ]count
- sta @parse_data+`count
- sta @parse_data+`on ;enable flag to parse data
- stx ]label_handle+2
- sty ]label_handle
-
- lda ~assembler ;short-reference type DC statement
- sta ]tmp_asm ;only available for Orca assembler
- lda #ORCA
- sta ~assembler
-
- lda []label_handle]
- sta ]label_ptr
- tax
- ldy #2
- lda []label_handle],y
- sta ]label_ptr+2
-
- pha
- phx
- pea #2
- lda []label_ptr]
- sta ]label_len
- pha
- _TextWriteBlock
- lda ]label_len
- cmp #12
- blt :0
- pea #' '
- _WriteChar
- bra :1
-:0 pea #^blank_str
- pea #blank_str
- pea #0
- sec
- lda #12
- sbc ]label_len
- pha
- _TextWriteBlock
-
-:1 lda #0
- ldx }nooffset
- beq :2
- lda #16
-:2 clc
- adc #SOFT_REFERENCE_EDGE
- sta ]edge
- sta @parse_data+`edge
- stz ]soft_value
- stz ]record
- stz ]num_char
-
-:read_record read_char ]record ;read record to parse
- lda ]record
- ldx ]num_char
- jsr parse_GLOBAL_type
- beq :print_const
- lda @parse_data+`count
- sta ]count
- beq :end_read
-:3 jsr print_offset
- pea #^space_12
- pea #space_12
- _WriteCString
- bra :read_record
-:end_read brl :rts
-
-:print_const stz ]num_char
- pea #^:REFERENCE_asm
- pea #:REFERENCE_asm
- _WriteCString
-:loop read_char ]soft_value
- ldx ]soft_value
- jsr print_char_dec
- inc ;add comma character
- clc
- adc ]num_char
- sta ]num_char
- dec ]const_count
- dec @parse_data+`count
-
- incr @omf+`displacement
- incr @omf+`counter
-
- lda ]num_char
- cmp ]edge
- blt :5
- beq :5
- pea #'''
- _WriteChar
- put_cr
- lda @parse_data+`count ;end if no more records to display
- beq :rts
- stz ]num_char
- lda ]const_count ;if at end of CONST record, read next
- bne :4 ;record
- brl :3
-:4 jsr print_offset
- pea #^space_12
- pea #space_12
- _WriteCString
- pea #^:REFERENCE_asm
- pea #:REFERENCE_asm
- _WriteCString
- brl :loop
-:5 lda ]const_count
- beq :end
- pea #','
- _WriteChar
- brl :loop
-
-:end lda ]num_char
- beq :rts
- pea #'''
- _WriteChar
- put_cr
- lda @parse_data+`count
- beq :rts
- brl :3
-:rts stz @parse_data+`on ;turn off parsing of data
- lda ]tmp_asm
- sta ~assembler
- rts
-
-:REFERENCE_asm asc !dc s1'!,00
-
-
-**************************************************
-* parse assembler entry directive. *
-* ---------------------------------------------- *
-* (input) *
-* x - HOW handle of label name. *
-* y - LOW handle of label name. *
-**************************************************
-parse_GLOBAL_type_N equ *
-]label_handle = $b0 ;handle to label name
-]label_ptr = $b4
-]label_len = $b8 ;length of label
-]segname_handle = $ba ;handle to segment name
-]segname_ptr = $ba
-]segname_len = $be ;length of segment name
-]expr_handle = $b0 ;handle to resulting expression
-]expr_ptr = $b4
-
- stx ]label_handle+2
- sty ]label_handle
- phx
- phy
- phx
- phy
- _HLock
-
- lda []label_handle]
- sta ]label_ptr
- tax
- ldy #2
- lda []label_handle],y
- sta ]label_ptr+2
-
- pha
- phx
- pea #2
- lda []label_ptr]
- sta ]label_len
- pha
- _TextWriteBlock
- lda ]label_len
- cmp #12
- blt :0
- pea #' '
- _WriteChar
- bra :1
-:0 pea #^blank_str
- pea #blank_str
- pea #0
- sec
- lda #12
- sbc ]label_len
- pha
- _TextWriteBlock
-
-:1 ldx #^:equ
- ldy #:equ
- lda ~assembler
- cmp #MERLIN
- beq :2
- ldx #^:entry
- ldy #:entry
-:2 phx
- phy
- _WriteCString
- put_cr
-
- lda }label
- bne :add_label
- _HUnlock
- rts
-:add_label ldx @omf+`segname
- ldy @omf+`segname+2
- stx ]segname_handle
- sty ]segname_handle+2
- phy
- phx
- phy
- phx
- _HLock
- ldy #2
- lda []segname_handle],y
- tax
- lda []segname_handle]
- sta ]segname_ptr
- stx ]segname_ptr+2
- lda []segname_ptr]
- sta ]segname_len
-
- pha ;long - result
- pha
- clc ;long - block size
- lda ]segname_len
- adc #14
- pea #0
- pha
- lda userID ;word - user ID of block
- pha
- pea #attrNoSpec+attrLocked ;word - block attributes
- pha ;long - start of block
- pha
- _NewHandle
- lda 1,s
- sta ]expr_handle
- lda 3,s
- sta ]expr_handle+2
- lda []expr_handle]
- sta ]expr_ptr
- ldy #2
- lda []expr_handle],y
- sta ]expr_ptr+2
-
- ldy #2
- lda #'('
- sta []expr_ptr],y
-
- ldy #2
- ldx #3
- shorta
-:copy_segname lda []segname_ptr],y
- phy
- txy
- sta []expr_ptr],y
- ply
- inx
- iny
- dec ]segname_len
- bne :copy_segname
- txy
- lda #'+'
- sta []expr_ptr],y
- iny
- lda #'$'
- sta []expr_ptr],y
- iny
- longa
- phy
-
- ldx @omf+`counter ;long - longint to convert
- ldy @omf+`counter+2
- phy
- phx
- pea #^long_hex_str ;long - pointer to output string
- pea #long_hex_str
- pea #8 ;word - length of string
- _Long2Hex
- ldx #7
- lda @omf+`counter ;special case value of 0
- ora @omf+`counter+2
- beq :4
- lda #8
- ldx #long_hex_str ;make hex alpha lowercase
- ldy #^long_hex_str
- jsr lowercase_hex
- ldx #$ffff
-:3 inx
- lda long_hex_str,x
- and #$ff
- cmp #'0'
- beq :3
-:4 ply
- shorta
-:copy_value lda long_hex_str,x
- sta []expr_ptr],y
- inx
- iny
- cpx #8
- blt :copy_value
- lda #')'
- sta []expr_ptr],y
- longa
- tya ;y holds length of label string - 1
- dec
- sta []expr_ptr]
- _HUnlock
- _HUnlock
- _HUnlock
-
- pei ]label_handle+2
- pei ]label_handle
- pei ]expr_handle+2
- pei ]expr_handle
- pea #GLOBAL
- jsr add_label
- rts
-
-:equ cStr 'equ *'
-:entry cStr 'entry'
-
-
-**************************************************
-* parse DS statement. *
-* ---------------------------------------------- *
-* (input) *
-* x - HOW handle of label name. *
-* y - LOW handle of label name. *
-**************************************************
-parse_GLOBAL_type_S equ *
-]label_handle = $b0 ;handle to name of label
-]label_ptr = $b4
-]label_len = $b8
-]record = $b8
-
- stx ]label_handle+2
- sty ]label_handle
-
- lda []label_handle]
- sta ]label_ptr
- tax
- ldy #2
- lda []label_handle],y
- sta ]label_ptr+2
-
- pha
- phx
- pea #2
- lda []label_ptr]
- sta ]label_len
- pha
- _TextWriteBlock
- lda ]label_len
- cmp #12
- blt :0
- pea #' '
- _WriteChar
- bra :1
-:0 pea #^blank_str
- pea #blank_str
- pea #0
- sec
- lda #12
- sbc ]label_len
- pha
- _TextWriteBlock
-
-:1 stz ]record
- read_char ]record
-
- lda ]record
- jmp parse_GLOBAL_type
-
-
-**************************************************
-* parse arguments to LOCAL/GLOBAL labels. *
-* ---------------------------------------------- *
-* (input) *
-* a - record number. *
-* (output) *
-* a - if expression parsed by this routine. *
-**************************************************
-parse_GLOBAL_type equ *
-
- cmp #EXPR
- beq :expr
- cmp #BEXPR
- beq :expr
- cmp #RELEXPR
- beq :expr
- cmp #LEXPR
- bne :ds
-:expr ldx #0
- ldy #TRUE
- jsr parse_record
- phx
- lda ~assembler
- cmp #ORCA
- bne :0
- pea #'''
- _WriteChar
-:0 pla
- beq :true
- lda }assembly
- beq :true
- put_cr
- bra :true
-
-:ds cmp #DS
- bne :end
- jsr parse_DS
- bra :true
-
-:end cmp #END
- bne :default
- put_cr
- put_cr
- lda #PREMATURE_END ;if at EOF of OMF file, premature end
- ldx #0 ;of file reached
- txy
- jsr error
-
-:default lda #FALSE
- rts
-
-:true lda #TRUE
- rts
-
-
-**************************************************
-flo_asm asc !flo '!,00 ;merlin extended directive
-
-
-**************************************************
- sav asm.l
+ END OF ARCHIVE
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