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<
jernej >
MoeIcenowy: thanks!
06:58
<
jernej >
MoeIcenowy: do you have also libva-v4l2-request patch somewhere?
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20:10
<
willmore >
Not sure if it's something that will help ATF, but it can't hurt to have a fully supported port.
20:11
<
anarsoul >
willmore: it'll help crust-firmware
20:11
<
willmore >
anarsoul, yay, then!
20:12
<
anarsoul >
smaeul: ^^
20:12
<
anarsoul >
(however I guess he already knows :))
20:13
<
smaeul >
yeah, at the moment it doesn't run when compiled with gcc9
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20:13
<
BenG83 >
I was wondering how do you work around all the bugs in the AW implementation of or1k?
20:13
<
smaeul >
very carefully :)
20:14
<
anarsoul >
smaeul: good to know
20:14
<
BenG83 >
if you're not writing assembly, do you have to look at all the compiler output?
20:14
<
anarsoul >
smaeul: is it compiler bug or firmware bug?
20:14
<
smaeul >
anarsoul: I don't know. it's very possible I'm doing something UB that gcc9 catches and gcc5 doesn't
20:14
<
smaeul >
or it could be the use of a new instruction
20:15
<
smaeul >
I compile with all warnings yes (only new one is a known switch fallthrough)
20:15
<
smaeul >
I'm talking about missing volitaile, or -fstrict-aliasing issues
20:16
<
smaeul >
or it could be something as sneaky as the offset of an instruction in a cacheline
20:16
<
KotCzarny >
there is also -Wextra ;)
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<
smaeul >
e.g. "past 0x8000 l.cmov at offset 4 into a cache line gets skipped"
20:18
<
smaeul >
yes that's an actual bug
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<
smaeul >
BenG83: yes, there's not space for gdbstub, so if something unusual and unexpected happens, sometimes I have to patch the compiled binary to figure out which instruction is problematic
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<
smaeul >
over ~8 months of development, I got very familiar with gcc5's instruction patterns and register allocation on or1k
20:24
<
smaeul >
thankfully it's a very simple ISA, so that's possible to do
20:25
<
smaeul >
but gcc9 went and changed it all (for pretty good reasons), so it's all a foreign language again
20:26
<
BenG83 >
is there a way to tell gcc about the quirks an implementation has?
20:26
<
smaeul >
there's -m options for most of the optional instructions
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<
smaeul >
thankfully all of the broken ones are optional, so I've just turned them of
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<
willmore >
smaeul, lol, good solution!
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<
mesih >
Hello everyone. I have just joined the channel. I would like to develop audio driver for F1C100s. Is there anyone working on this driver? Just making sure not to double the effor..
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