M Hightower 67e1dfc5a4 Extended ASM got fussy when using different optimizations. ie. HWDT (#7816) ...

resets. It seems you should not use input registers for scratch registers.
Add an extra output register instead. No code size increase.

Light refactoring for readability

Added "C" reference code for Extended ASM

Save two cycles by loading a0 early in exc-c-wrapper-handler.S

Use optimization O2
Net change in size, 0 bytes with optimization. Save 4 bytes w/o Optimization.
With changes and "O2" save 3 cycles on write and 6 cycles on read.

2021-01-07 21:05:24 -08:00

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esp8266

Extended ASM got fussy when using different optimizations. ie. HWDT (#7816)

2021-01-07 21:05:24 -08:00