mirror of
https://github.com/marketideas/qasm.git
synced 2024-12-29 12:33:03 +00:00
112 lines
3.6 KiB
ArmAsm
112 lines
3.6 KiB
ArmAsm
|
; Copyright 2019 faddenSoft. All Rights Reserved.
|
||
|
|
; See the LICENSE.txt file for distribution terms (Apache 2.0).
|
||
|
|
;
|
||
|
|
; Assembler: Merlin 32
|
||
|
|
|
||
|
|
; EDIT: the project must include the platform symbol file and extension script
|
||
|
|
|
||
|
|
PrintInlineL1String equ $011000
|
||
|
|
PrintInlineL2String equ $012000
|
||
|
|
PrintInlineDciString equ $013000 ;EDIT: add to project symbols
|
||
|
|
|
||
|
|
org $1000
|
||
|
|
|
||
|
|
clc
|
||
|
|
xce
|
||
|
|
sep #$30
|
||
|
|
mx %11
|
||
|
|
|
||
|
|
; check basics
|
||
|
|
jsr PrintInline8String
|
||
|
|
asc '01234567'
|
||
|
|
jsr PrintInlineRev8String
|
||
|
|
asc '76543210'
|
||
|
|
jsr PrintInlineNullString
|
||
|
|
asc 'null-term string',00
|
||
|
|
|
||
|
|
jsl PrintInlineL1String
|
||
|
|
str 'string with length/1'
|
||
|
|
jsl PrintInlineL2String
|
||
|
|
strl 'string with length/2'
|
||
|
|
jsl PrintInlineDciString
|
||
|
|
dci 'DCI string'
|
||
|
|
|
||
|
|
; check errors
|
||
|
|
jsr broken
|
||
|
|
jsr off_end
|
||
|
|
jsr too_long
|
||
|
|
|
||
|
|
; check block formatting
|
||
|
|
brk $01
|
||
|
|
dw data01
|
||
|
|
|
||
|
|
brk $02
|
||
|
|
dw data02
|
||
|
|
|
||
|
|
; Handle an edge case where the inline formatting gets thrown out.
|
||
|
|
; Two paths: BIT $A9 / BRK $85 / inline $FF/EA goes first, then
|
||
|
|
; LDA $00 / STA $FF / NOP goes. When we get to the STA we notice
|
||
|
|
; that it's marked as inline data, so we remove it from $85 $ff
|
||
|
|
; but not from $ea.
|
||
|
|
;
|
||
|
|
; If we try to walk through the file, advancing offset by the anattrib
|
||
|
|
; length, we will traverse the first path, which (with 2-byte BRKs)
|
||
|
|
; runs into the $FF, which is marked as an instruction but not an
|
||
|
|
; instruction start.
|
||
|
|
;
|
||
|
|
; Switching to 1-byte BRKs makes the $85 an inline data item rather
|
||
|
|
; than an instruction. When we come back through, we LDA $00 and
|
||
|
|
; then skip over the next 3 bytes. No conflict.
|
||
|
|
nop
|
||
|
|
jsr edge1 ;alt path, evaluated later
|
||
|
|
dfb $24 ;1: BIT dp
|
||
|
|
edge1 dfb $a9 ;2: LDA imm
|
||
|
|
brk ;1: BRK <op>
|
||
|
|
dfb $85 ;2: STA imm
|
||
|
|
dfb $ff ;1: address $eaff
|
||
|
|
nop ;2:
|
||
|
|
|
||
|
|
rts
|
||
|
|
|
||
|
|
PrintInline8String rts ;EDIT: set label
|
||
|
|
PrintInlineRev8String rts ;EDIT: set label
|
||
|
|
PrintInlineNullString rts ;EDIT: set label
|
||
|
|
|
||
|
|
data01 ;EDIT: set label
|
||
|
|
dw $1122 ;should be little-endian
|
||
|
|
dw $4433 ;should be big-endian
|
||
|
|
hex 55667788 ;32-bit
|
||
|
|
hex 99887766 ;32-bit big-endian
|
||
|
|
dfb 'f' ;ASCII
|
||
|
|
dfb "F" ;high ASCII
|
||
|
|
hex 40C142C344C546C7 ;bad DCI string
|
||
|
|
hex 002001 ;24-bit addr
|
||
|
|
dw data02 ;by symbol
|
||
|
|
|
||
|
|
dfb $80
|
||
|
|
|
||
|
|
data02 ;EDIT: set label, must be "data02"
|
||
|
|
dw data03
|
||
|
|
dfb $80
|
||
|
|
|
||
|
|
data03 ;EDIT: set label
|
||
|
|
asc "AllEight"
|
||
|
|
|
||
|
|
|
||
|
|
; check address split across string
|
||
|
|
broken jsr PrintInlineNullString
|
||
|
|
asc 'broken ',01
|
||
|
|
org $1100 ;EDIT: split address
|
||
|
|
asc 'string',00
|
||
|
|
rts
|
||
|
|
|
||
|
|
too_long jsl PrintInlineL2String
|
||
|
|
dw END-*+1 ;should be 1 byte over; want it to be rejected by
|
||
|
|
rts ; function in .cs (otherwise code overlap race)
|
||
|
|
|
||
|
|
; MUST be last
|
||
|
|
off_end jsr PrintInlineNullString
|
||
|
|
nonterm asc 'end'
|
||
|
|
|
||
|
|
END equ *
|