| Re: [hatari-devel] Hatari FPU instruction disassembling |
[ Thread Index |
Date Index
| More lists.tuxfamily.org/hatari-devel Archives
]
Hi,
On maanantai 28 heinäkuu 2014, Douglas Little wrote:
> BTW following an earlier email about missing FPU opcodes in the debugger,
> here are a few cases I kept track of. There are probably others but I
> haven't really dug into it.
Is this with internal or external disassembler and does the other
one give you correct instructions:
-------------------------
$ hatari --disasm help
Disassembly settings:
uae - use CPU core internal disassembler which has better
instruction support
ext - use external disassembler which has nicer output
and supports options below
<bitmask> - disassembly output option flags
Flag values:
1: no brackets around absolute addressing
2: opcodes in small letters
4: register names in small letters
8: stack pointer as 'SP', not 'A7'
Current settings are:
--disasm ext --disasm 15
-------------------------
?
> $020286 : f228 6400 0008 fmove.s 8(a0),fp0
> $02028c : f21f DC.W $f21f
> $02028e : d038 4fef add.b $4fef.w,d0
> $020292 : 000c DC.W $000c
> $020294 : 4e75 rts
>
>
> $0201c4 : 4fef fff4 lea $fff4(sp),sp
> $0201c8 : f227 DC.W $f227
> $0201ca : e01c ror.b #8,d4
> $0201cc : 206f 0034 movea.l $34(sp),a0
> $0201d0 : 226f 0038 movea.l $38(sp),a1
> $0201d4 : f211 4400 fmove.s (a1),fp0
> $0201d8 : f229 4500 0004 fmove.s 4(a1),fp2
> $0201de : f229 4480 0008 fmove.s 8(a1),fp1
>
> $020062 : 4eb9 0003 c124 jsr $3c124
> $020068 : 4fef 000c lea $c(sp),sp
> $02006c : 3a6d 0006 movea.w 6(a5),a5
> $020070 : 2f4d 0048 move.l a5,$48(sp)
> $020074 : 4cdf 7c1c movem.l
> (sp)+,d2-d4/a2-a6 $020078 : f21f DC.W
> $f21f
> $02007a : d038 6000 add.b $6000.w,d0
> $02007e : fabe DC.W $fabe
> $020080 : 2029 0008 move.l 8(a1),d0
> $020084 : 6c00 ff20 bge $1ffa6
What are the correct instructions should be and how many opcodes they take?
3 like fmove?
- Eero