[PATCH 05/13] selftests/powerpc: Don't save TOC by default in asm helpers
From: Michael Ellerman <mpe@ellerman.id.au>
Date: 2022-06-27 14:03:21
Subsystem:
kernel selftest framework, the rest · Maintainers:
Shuah Khan, Linus Torvalds
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: Michael Ellerman <mpe@ellerman.id.au> --- tools/testing/selftests/powerpc/include/basic_asm.h | 4 +--- 1 file changed, 1 insertion(+), 3 deletions(-)
diff --git a/tools/testing/selftests/powerpc/include/basic_asm.h b/tools/testing/selftests/powerpc/include/basic_asm.h
index faec7b11c041..be380aa779f8 100644
--- a/tools/testing/selftests/powerpc/include/basic_asm.h
+++ b/tools/testing/selftests/powerpc/include/basic_asm.h@@ -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;
--
2.35.3