mirror of
https://git.sr.ht/~rabbits/uxn
synced 2024-11-01 03:52:39 +00:00
181 lines
4.2 KiB
Tal
181 lines
4.2 KiB
Tal
( in-Uxn debugger )
|
|
|
|
( To use, include this file just before the BRK in the program reset routine, e.g.:
|
|
|
|
|0100 ( -> )
|
|
( theme )
|
|
#0fe5 .System/r DEO2
|
|
#0fc5 .System/g DEO2
|
|
#0f25 .System/b DEO2
|
|
~projects/library/debugger.tal
|
|
BRK
|
|
|
|
The debugger will catch stack errors that arise after that point.
|
|
|
|
)
|
|
|
|
%BREAKPOINT { LIT2r :debug JSR2r }
|
|
|
|
@debug-start
|
|
;debug-vector .System/vector DEO2
|
|
;debug-end JMP2
|
|
|
|
@debug ( pc* -- )
|
|
#0001 SUB2 .System/eaddr DEO2
|
|
.System/ecode DEIk #07 EOR SWP DEO
|
|
,debug-vector/main JMP
|
|
|
|
@debug-vector ( -> )
|
|
STH STH STH STH ( <- only run in case of working stack overflow )
|
|
&main
|
|
|
|
( flush the working stack )
|
|
.System/wst DEI ;debug-wst/ptr STA
|
|
&flush-wst
|
|
.System/wst DEI #00 EQU ,&end-flush-wst JCN
|
|
#00 .System/wst DEI #0002 SUB2 ;debug-wst/dat ADD2 STA
|
|
,&flush-wst JMP
|
|
&end-flush-wst
|
|
|
|
( in case of working stack overflow, we need to append the four return stack bytes )
|
|
.System/ecode DEI #02 NEQ ,&skip-wst-append JCN
|
|
#00 ;debug-wst/ptr LDAk ( 00 ptr-hi ptr-lo ptr / ... z y x w )
|
|
DUP #04 ADD OVR2 STA
|
|
ROT ROT ADD2 ( start* / ... z y x w )
|
|
INC2 DUP2 #0004 ADD2 SWP2 ( end* start* / ... z y x w )
|
|
&loop
|
|
DUP2 STHr ROT ROT STA
|
|
INC2
|
|
GTH2k ,&loop JCN
|
|
POP2 POP2
|
|
&skip-wst-append
|
|
|
|
( flush the return stack )
|
|
.System/rst DEI ;debug-rst/ptr STA
|
|
&flush-rst
|
|
.System/rst DEI #00 EQU ,&end-flush-rst JCN
|
|
STHr #00 .System/rst DEI ;debug-rst/dat ADD2 STA
|
|
,&flush-rst JMP
|
|
&end-flush-rst
|
|
|
|
( Version 0.1 functionality: print the error and exit )
|
|
;debug-print-error JSR2
|
|
#01 .System/halt DEO
|
|
BRK
|
|
|
|
@debug-print-opcode ( instr -- )
|
|
DUP ,¬-brk JCN
|
|
POP ;&brk-msg ;debug-print JMP2 ( tail call )
|
|
&brk-msg "BRK 00
|
|
¬-brk
|
|
#00 OVR #1f AND #03 MUL ;&opcode-names ADD2 ( instr addr* )
|
|
LDAk .Console/write DEO INC2
|
|
LDAk .Console/write DEO INC2
|
|
LDA .Console/write DEO
|
|
DUP #1f AND ,¬-lit JCN
|
|
#7f AND
|
|
¬-lit
|
|
DUP #20 AND #00 EQU ,¬-2 JCN
|
|
LIT '2 .Console/write DEO
|
|
¬-2
|
|
DUP #80 AND #00 EQU ,¬-k JCN
|
|
LIT 'k .Console/write DEO
|
|
¬-k
|
|
#40 AND #00 EQU ,¬-r JCN
|
|
LIT 'r .Console/write DEO
|
|
¬-r
|
|
JMP2r
|
|
|
|
&opcode-names
|
|
"LITINCPOPDUPNIPSWPOVRROT
|
|
"EQUNEQGTHLTHJMPJCNJSRSTH
|
|
"LDZSTZLDRSTRLDASTADEIDEO
|
|
"ADDSUBMULDIVANDORAEORSFT
|
|
|
|
@debug-print ( addr* -- )
|
|
LDAk #00 EQU ,&end JCN
|
|
LDAk .Console/write DEO
|
|
INC2
|
|
,debug-print JMP
|
|
&end POP2 JMP2r
|
|
|
|
@debug-print-error
|
|
;&halted-msg ,debug-print JSR
|
|
#00 .System/ecode DEI #07 AND #20 SFT2 ;&messages-table ADD2
|
|
LDA2k ,debug-print JSR
|
|
INC2 INC2 LDA2 ,debug-print JSR
|
|
;&executing-msg ,debug-print JSR
|
|
.System/eaddr DEI2 LDA ;debug-print-opcode JSR2
|
|
;&at-msg ,debug-print JSR
|
|
.System/eaddr DEI2 ;debug-print-hex-short JSR2
|
|
#0a .Console/write DEO
|
|
;&wst-msg ,debug-print JSR
|
|
;&contents-msg ,debug-print JSR
|
|
;debug-wst ;debug-print-stack JSR2
|
|
#0a .Console/write DEO
|
|
;&rst-msg ,debug-print JSR
|
|
;&contents-msg ,debug-print JSR
|
|
;debug-rst ;debug-print-stack JSR2
|
|
#0a .Console/write DEO
|
|
JMP2r
|
|
|
|
&messages-table
|
|
:&wst-msg :&underflow-msg
|
|
:&rst-msg :&underflow-msg
|
|
:&wst-msg :&overflow-msg
|
|
:&rst-msg :&overflow-msg
|
|
:&wst-msg :&divzero-msg
|
|
:&rst-msg :&divzero-msg
|
|
:&emulator-msg :&interrupt-msg
|
|
:&userdef-msg :&breakpoint-msg
|
|
|
|
&halted-msg "Halted: 2000 ( #0002, at 0x0100 )
|
|
&wst-msg "Working-stack 2000
|
|
&rst-msg "Return-stack 2000
|
|
&emulator-msg "Emulator 2000
|
|
&userdef-msg "User-defined 2000
|
|
&underflow-msg "underflow 00
|
|
&overflow-msg "overflow 00
|
|
&divzero-msg "division 20 "by 20 "zero 00
|
|
&interrupt-msg "interrupt 00
|
|
&breakpoint-msg "breakpoint 00
|
|
&executing-msg 20 "executing 2000
|
|
&at-msg 20 "at 20 "0x 00
|
|
&contents-msg "contents: 00
|
|
|
|
@debug-print-hex-short ( value* -- )
|
|
SWP ,debug-print-hex-byte JSR
|
|
( fall through )
|
|
|
|
@debug-print-hex-byte ( value -- )
|
|
DUP #04 SFT ,debug-print-hex-nibble JSR
|
|
#0f AND
|
|
( fall through )
|
|
|
|
@debug-print-hex-nibble ( value -- )
|
|
#30 ADD DUP #39 GTH #27 MUL ADD
|
|
.Console/write DEO
|
|
JMP2r
|
|
|
|
@debug-print-stack ( addr* -- )
|
|
LDAk ,¬-empty JCN
|
|
POP2 ;&empty-msg ;debug-print JMP2 ( tail call )
|
|
¬-empty
|
|
LDAk STH INC2 ( dat* / count )
|
|
&loop
|
|
STHkr #00 EQU ,&end JCN
|
|
#20 .Console/write DEO
|
|
LDAk ,debug-print-hex-byte JSR
|
|
INC2
|
|
LITr 01 SUBr
|
|
,&loop JMP
|
|
&end
|
|
POP2 POPr
|
|
JMP2r
|
|
|
|
&empty-msg 20 "(empty) 00
|
|
|
|
@debug-wst &ptr $1 &dat $ff
|
|
@debug-rst &ptr $1 &dat $ff
|
|
@debug-end
|
|
|