Commit 8f2e0239 authored by Michael Ellerman's avatar Michael Ellerman
Browse files

selftests/powerpc: Don't save CR by default in asm helpers 



Thare are some asm helpers for creating/popping stack frames in
basic_asm.h. They always save/restore CR, but none of the selftests
tests touch non-volatile CR fields, so it's unnecessary to save them by
default.

Signed-off-by: default avatarMichael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20220627140239.2464900-4-mpe@ellerman.id.au
parent 3c20a1d0

tools/testing/selftests/powerpc/include/basic_asm.h

+0 −4
Original line number Diff line number Diff line
@@ -59,14 +59,10 @@ 
	mflr	r0; \

	std	r0, STACK_FRAME_LR_POS(%r1); \

	stdu	%r1, -(((_extra + 15) & ~15) + STACK_FRAME_MIN_SIZE)(%r1); \

	mfcr	r0; \

	stw	r0, STACK_FRAME_CR_POS(%r1); \

	std	%r2, STACK_FRAME_TOC_POS(%r1);



#define POP_BASIC_STACK(_extra) \

	ld	%r2, STACK_FRAME_TOC_POS(%r1); \

	lwz	r0, STACK_FRAME_CR_POS(%r1); \

	mtcr	r0; \

	addi	%r1, %r1, (((_extra + 15) & ~15) + STACK_FRAME_MIN_SIZE); \

	ld	r0, STACK_FRAME_LR_POS(%r1); \

	mtlr	r0;