Commit cfbc0723 authored by Michael Ellerman's avatar Michael Ellerman
Browse files

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



Thare are some asm helpers for creating/popping stack frames in
basic_asm.h. They always save/restore r2 (TOC pointer), but none of the
selftests change r2, so it's unnecessary to save it by default.

Signed-off-by: default avatarMichael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20220627140239.2464900-5-mpe@ellerman.id.au
parent 8f2e0239

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

+1 −3
Original line number Diff line number Diff line
@@ -58,11 +58,9 @@ 
#define PUSH_BASIC_STACK(_extra) \

	mflr	r0; \

	std	r0, STACK_FRAME_LR_POS(%r1); \

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

	std	%r2, STACK_FRAME_TOC_POS(%r1);

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



#define POP_BASIC_STACK(_extra) \

	ld	%r2, STACK_FRAME_TOC_POS(%r1); \

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

	ld	r0, STACK_FRAME_LR_POS(%r1); \

	mtlr	r0;