[PATCH 05/13] selftests/powerpc: Don't save TOC by default in asm helpers
Michael Ellerman
mpe at ellerman.id.au
Tue Jun 28 00:02:31 AEST 2022
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 at 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
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