linux/arch/arc/include/asm/entry-arcv2.h
Vineet Gupta 9de7fc30f2 ARC: entry: SAVE_ABI_CALLEE_REG: ISA/ABI specific helper
And for ARcompact variant replace the PUSH/POP macros with gas provided
push/pop pseudo-instructions

This allows ISA specific implementation

e.g. Current ARCv2 PUSH/POP could be replaced with STD/LDL to save 2
registers at a time (w/o bothering with SP update each time) or
perhaps use ENTER_S/LEAVE_S to reduce code size

For ARCv3 ABI changed so callee regs are now r14-r26 (vs. r13-r25)
thus would need a different implementation.

Signed-off-by: Vineet Gupta <vgupta@kernel.org>
2023-12-08 16:30:24 -08:00

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