| Message ID | fdaaf8670ed1f52f55ba9a6bbac98c1afddc1af6.1614182415.git.jpoimboe@redhat.com (mailing list archive) |
|---|---|
| State | Not Applicable |
| Delegated to: | Herbert Xu |
| Headers | show |
| Series | x86/crypto/asm: objtool support | expand |
diff --git a/arch/x86/crypto/sha1_avx2_x86_64_asm.S b/arch/x86/crypto/sha1_avx2_x86_64_asm.S index 1e594d60afa5..5eed620f4676 100644 --- a/arch/x86/crypto/sha1_avx2_x86_64_asm.S +++ b/arch/x86/crypto/sha1_avx2_x86_64_asm.S @@ -645,9 +645,9 @@ _loop3: RESERVE_STACK = (W_SIZE*4 + 8+24) /* Align stack */ - mov %rsp, %rbx + push %rbp + mov %rsp, %rbp and $~(0x20-1), %rsp - push %rbx sub $RESERVE_STACK, %rsp avx2_zeroupper @@ -665,8 +665,8 @@ _loop3: avx2_zeroupper - add $RESERVE_STACK, %rsp - pop %rsp + mov %rbp, %rsp + pop %rbp pop %r15 pop %r14
Use a more standard prologue for saving the stack pointer before realigning the stack. This enables ORC unwinding by allowing objtool to understand the stack realignment. Signed-off-by: Josh Poimboeuf <jpoimboe@redhat.com> --- arch/x86/crypto/sha1_avx2_x86_64_asm.S | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-)