1 files changed, 26 insertions, 0 deletions

diff --git a/arch/arm64/kernel/insn.c b/arch/arm64/kernel/insn.c
index 8cd27fedc8b6..7e9327a0986d 100644
--- a/arch/arm64/kernel/insn.c
+++ b/arch/arm64/kernel/insn.c
@@ -960,3 +960,29 @@ u32 aarch64_insn_gen_logical_shifted_reg(enum aarch64_insn_register dst,
 
         return aarch64_insn_encode_immediate(AARCH64_INSN_IMM_6, insn, shift);
 }
+
+bool aarch32_insn_is_wide(u32 insn)
+{
+        return insn >= 0xe800;
+}
+
+/*
+ * Macros/defines for extracting register numbers from instruction.
+ */
+u32 aarch32_insn_extract_reg_num(u32 insn, int offset)
+{
+        return (insn & (0xf << offset)) >> offset;
+}
+
+#define OPC2_MASK       0x7
+#define OPC2_OFFSET     5
+u32 aarch32_insn_mcr_extract_opc2(u32 insn)
+{
+        return (insn & (OPC2_MASK << OPC2_OFFSET)) >> OPC2_OFFSET;
+}
+
+#define CRM_MASK        0xf
+u32 aarch32_insn_mcr_extract_crm(u32 insn)
+{
+        return insn & CRM_MASK;
+}