crashing ASM buffer address?
- KVRAF
- Topic Starter
- 5140 posts since 22 Jul, 2006 from Tasmania, Australia
hi!
I'm trying to make my VSTi compatible with the JUCE host example.
It's all working good- but I have a crashing asm buffer for the polyphonic portamento.
What's happening here, can you guess for me?
I'm really out of my depth in asm,
It seems I can't get a valid buffer address?
-any advice on how to create a valid address?
the host poof crashes clean when note on- ie. the stream with invalid address opens
my environment is Flowstone
I'm a novice with some time at Flowstone, so I'm prolly going to have trouble comprehending
all success!
edit- the address is valid in Orion and FL
I'm trying to make my VSTi compatible with the JUCE host example.
It's all working good- but I have a crashing asm buffer for the polyphonic portamento.
What's happening here, can you guess for me?
I'm really out of my depth in asm,
It seems I can't get a valid buffer address?
-any advice on how to create a valid address?
the host poof crashes clean when note on- ie. the stream with invalid address opens
my environment is Flowstone
I'm a novice with some time at Flowstone, so I'm prolly going to have trouble comprehending
all success!
edit- the address is valid in Orion and FL
-
- KVRian
- 918 posts since 4 Jan, 2007
Segfault? Pointers involved?
There is not enough information on this thread, but you might want to try to reproduce with a Debug version if not doing so already. Ideally attached to a debugger.
Alternatively, getting a stack trace if it only happens in release builds, but this is completely OS and compiler dependant.
There is not enough information on this thread, but you might want to try to reproduce with a Debug version if not doing so already. Ideally attached to a debugger.
Alternatively, getting a stack trace if it only happens in release builds, but this is completely OS and compiler dependant.
Last edited by rafa1981 on Sat Jan 29, 2022 7:14 am, edited 1 time in total.
- KVRAF
- Topic Starter
- 5140 posts since 22 Jul, 2006 from Tasmania, Australia
I have done what I can de-bugging
here is a valid address with copy and paste in Orion==> --and the address in JUCE Host==> there is no release and de-bug in Flowstone
-but perhaps I could try to build a de-bug of JUCE Host
I guess it was a long shot
ty!
-if anyone wants a cool coding puzzle to solve,
it's open source, so let me know if so and I'll up the relevant files atm
here's the asm, it will let me create the location,
but when audio engages- it's crashes
here is a valid address with copy and paste in Orion==> --and the address in JUCE Host==> there is no release and de-bug in Flowstone
-but perhaps I could try to build a de-bug of JUCE Host
I guess it was a long shot
ty!
-if anyone wants a cool coding puzzle to solve,
it's open source, so let me know if so and I'll up the relevant files atm
here's the asm, it will let me create the location,
but when audio engages- it's crashes
Code: Select all
streamin addr;
streamin size;
streamin data;
streamboolin write;
streamout Out;
int temp = 0;
int zero = 0;
mov eax,addr[0];
cmp eax,0;
jz bypass;
maxps xmm0,zero;
minps xmm0,size;
pslld xmm0,2;
paddd xmm0,addr;
movaps temp,xmm0;
mov eax,write[0];
cmp eax,0;
jz skip0;
mov eax, temp[0];
fld data[0]; fstp [eax];
skip0:
mov eax, temp[0];
fld [eax]; fstp Out[0];
mov eax,write[1];
cmp eax,0;
jz skip1;
mov eax, temp[1];
fld data[1]; fstp [eax];
skip1:
mov eax, temp[1];
fld [eax]; fstp Out[1];
mov eax,write[2];
cmp eax,0;
jz skip2;
mov eax, temp[2];
fld data[2]; fstp [eax];
skip2:
mov eax, temp[2];
fld [eax]; fstp Out[2];
mov eax,write[3];
cmp eax,0;
jz skip3;
mov eax, temp[3];
fld data[3]; fstp [eax];
skip3:
mov eax, temp[3];
fld [eax]; fstp Out[3];
bypass:
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- KVRian
- 918 posts since 4 Jan, 2007
I don't know about flowstone, but probably as you say a debug build of the host will let you see the each surrounding instruction and the register contents when it crashes.
Last edited by rafa1981 on Sat Jan 29, 2022 7:15 am, edited 1 time in total.
- KVRAF
- Topic Starter
- 5140 posts since 22 Jul, 2006 from Tasmania, Australia
thank- will be a stretch-
but as it's a host dependent problem,
might be fruitful if I can figure out how to log
but as it's a host dependent problem,
might be fruitful if I can figure out how to log