1 files changed, 11 insertions, 6 deletions

diff --git a/tools/objtool/arch/x86/decode.c b/tools/objtool/arch/x86/decode.c
index 0e8c8ec4fd4e..34a579f806e3 100644
--- a/tools/objtool/arch/x86/decode.c
+++ b/tools/objtool/arch/x86/decode.c
@@ -208,14 +208,14 @@ int arch_decode_instruction(struct elf *elf, struct section *sec,
                 break;
 
         case 0x89:
-                if (rex == 0x48 && modrm == 0xe5) {
+                if (rex_w && !rex_r && modrm_mod == 3 && modrm_reg == 4) {
 
-                        /* mov %rsp, %rbp */
+                        /* mov %rsp, reg */
                         *type = INSN_STACK;
                         op->src.type = OP_SRC_REG;
                         op->src.reg = CFI_SP;
                         op->dest.type = OP_DEST_REG;
-                        op->dest.reg = CFI_BP;
+                        op->dest.reg = op_to_cfi_reg[modrm_rm][rex_b];
                         break;
                 }
 
@@ -284,11 +284,16 @@ int arch_decode_instruction(struct elf *elf, struct section *sec,
         case 0x8d:
                 if (sib == 0x24 && rex_w && !rex_b && !rex_x) {
 
-                        /* lea disp(%rsp), reg */
                         *type = INSN_STACK;
-                        op->src.type = OP_SRC_ADD;
+                        if (!insn.displacement.value) {
+                                /* lea (%rsp), reg */
+                                op->src.type = OP_SRC_REG;
+                        } else {
+                                /* lea disp(%rsp), reg */
+                                op->src.type = OP_SRC_ADD;
+                                op->src.offset = insn.displacement.value;
+                        }
                         op->src.reg = CFI_SP;
-                        op->src.offset = insn.displacement.value;
                         op->dest.type = OP_DEST_REG;
                         op->dest.reg = op_to_cfi_reg[modrm_reg][rex_r];