Alex Stewart
b15d149b09
More LoadStoreErrorHandler performance improvements
2015-09-23 08:51:36 -07:00
Alex Stewart
f1bff97103
Further optimizations for LoadStoreErrorHandler
2015-09-21 22:13:14 -07:00
Angus Gratton
c7a7dfdf82
Remove the unaligned load handler to its own source file as it was getting quite complex
...
The downside here is needing to use #include so the 'beq' in the
exception vector can land on it directly, save an instruction.
There might be a better way to do this, but it seems hard to "curate"
the order that symbols appear in each section.
2015-09-15 11:34:21 +10:00
Angus Gratton
3911a94cc8
Remove one more branch from l8ui code path
...
Thanks for @foogod for the heads-up on this.
2015-09-15 11:01:21 +10:00
Angus Gratton
26e1ce325e
Fix sign extension as suggested by @foogod
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Also removes a branch from l8ui path, saves some cycles
2015-09-14 18:30:11 +10:00
Angus Gratton
259c9b643f
Exception vectors: Remove no-op syscallhandler
2015-09-14 18:17:45 +10:00
Angus Gratton
0e0c5d89b8
NMI exception handler: Fix reserving too much RAM for registers
2015-09-14 17:43:29 +10:00
Angus Gratton
9c15b757d3
Exception handlers: remove unused NMIHandlerAddress
2015-09-14 17:22:50 +10:00
Angus Gratton
0432ae3745
Use GPIO2 for led_debug.S
2015-09-14 17:20:00 +10:00
Angus Gratton
45d4e0da2d
Exception vectors: Rearrange to use absolute offets instead of .align hacks
2015-09-14 17:20:00 +10:00
Angus Gratton
a5a179beef
Extended unaligned load support to work from DoubleExceptionVector
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Allows handling bad loads that occur inside level 1 exception handlers.
2015-09-14 17:20:00 +10:00
Angus Gratton
7f338e66cb
Unaligned load: Remove debugging variables
2015-08-11 16:25:35 +10:00
Angus Gratton
e3b24df043
Unaligned load: Shave a few more instructions off
2015-08-11 16:25:11 +10:00
Angus Gratton
3b3f5ea771
Unaligned loads: Only save working registers, use jump table to load non-working registers
2015-08-11 15:29:53 +10:00
Angus Gratton
8ea4ae27e2
Unaligned loader: Support l16si
2015-08-11 15:03:53 +10:00
Angus Gratton
773a046dc3
Unaligned loader: clean up, reduce number of registers
2015-08-11 14:23:41 +10:00
Angus Gratton
bfd38cd1e2
Experimental support for storing const strings in SPI flash or IRAM
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As discussed in #11
Known limitations:
- Only supports l8ui/l16ui
- Unoptimised load routine
- Not called from DoubleExceptionHandler but should be
- Doesn't restore state properly when falling through to fatal exception handler
2015-08-10 12:03:03 +10:00
Angus Gratton
d685581829
Syscall hander: Fix a3 save address
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(SDK doesn't use syscall exception so bug probably never hit?)
2015-08-10 11:54:30 +10:00
Angus Gratton
bed6907d22
Exception vector address must be 256 byte aligned
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Not actually a problem with the current linker script as the address is
predetermined there at start of IRAM, but might as well be accurate
about it.
As per advice from @foogod on esp8266-re mailing list:
https://groups.google.com/d/msg/esp8266-re/1ljIY3Zttbo/HvzHSWOLCgAJ
2015-08-06 09:54:46 +10:00
Angus Gratton
aed843fc14
exception_vectors: Remove some cruft some the symbol table
2015-07-30 10:10:37 +10:00
