On 05/19/2017, 11:35 PM, Josh Poimboeuf wrote:
>
> https://github.com/jpoimboe/linux/blob/undwarf/arch/x86/kernel/unwind_undwarf.c
JFYI, it crashes in sha1_transform_avx due to crypto changes. You
perhaps missed that this beast uses ebp (not rbp) register for
computations. I had to do:
--- a/arch/x86/crypto/sha1_ssse3_asm.S
+++ b/arch/x86/crypto/sha1_ssse3_asm.S
@@ -37,7 +37,7 @@
#define REG_A %ecx
#define REG_B %esi
#define REG_C %edi
-#define REG_D %ebp
+#define REG_D %r12d
#define REG_E %edx
#define REG_T1 %eax
@@ -74,6 +74,7 @@
SYM_FUNC_START(\name)
push %rbx
+ push %r12
push %rbp
mov %rsp, %rbp
@@ -99,6 +100,7 @@
rep stosq
leaveq # deallocate workspace
+ pop %r12
pop %rbx
ret
I am afraid there are more of these, e.g. in aesni-intel_asm.S.
thanks,
--
js
suse labs
