target/arm: Add syndrome data for EC_GCS

Reviewed-by: Pierrick Bouvier <pierrick.bouvier@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20251008215613.300150-38-richard.henderson@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

diff --git a/target/arm/syndrome.h b/target/arm/syndrome.h
index c48d3b85871d824cf64949218046e0e7c53f5ca7..bff61f052cc65ce5f4d403cea653360b1a6de8e1 100644 (file)
--- a/target/arm/syndrome.h
+++ b/target/arm/syndrome.h
@@ -63,6 +63,7 @@ enum arm_exception_class {
     EC_MOP                    = 0x27,
     EC_AA32_FPTRAP            = 0x28,
     EC_AA64_FPTRAP            = 0x2c,
+    EC_GCS                    = 0x2d,
     EC_SERROR                 = 0x2f,
     EC_BREAKPOINT             = 0x30,
     EC_BREAKPOINT_SAME_EL     = 0x31,
@@ -83,6 +84,23 @@ typedef enum {
     SME_ET_InaccessibleZT0,
 } SMEExceptionType;
 
+typedef enum {
+    GCS_ET_DataCheck,
+    GCS_ET_EXLOCK,
+    GCS_ET_GCSSTR_GCSSTTR,
+} GCSExceptionType;
+
+typedef enum {
+    GCS_IT_RET_nPauth = 0,
+    GCS_IT_GCSPOPM = 1,
+    GCS_IT_RET_PauthA = 2,
+    GCS_IT_RET_PauthB = 3,
+    GCS_IT_GCSSS1 = 4,
+    GCS_IT_GCSSS2 = 5,
+    GCS_IT_GCSPOPCX = 8,
+    GCS_IT_GCSPOPX = 9,
+} GCSInstructionType;
+
 #define ARM_EL_EC_LENGTH 6
 #define ARM_EL_EC_SHIFT 26
 #define ARM_EL_IL_SHIFT 25
@@ -351,6 +369,23 @@ static inline uint32_t syn_pcalignment(void)
     return (EC_PCALIGNMENT << ARM_EL_EC_SHIFT) | ARM_EL_IL;
 }
 
+static inline uint32_t syn_gcs_data_check(GCSInstructionType it, int rn)
+{
+    return ((EC_GCS << ARM_EL_EC_SHIFT) | ARM_EL_IL |
+            (GCS_ET_DataCheck << 20) | (rn << 5) | it);
+}
+
+static inline uint32_t syn_gcs_exlock(void)
+{
+    return (EC_GCS << ARM_EL_EC_SHIFT) | ARM_EL_IL | (GCS_ET_EXLOCK << 20);
+}
+
+static inline uint32_t syn_gcs_gcsstr(int ra, int rn)
+{
+    return ((EC_GCS << ARM_EL_EC_SHIFT) | ARM_EL_IL |
+            (GCS_ET_GCSSTR_GCSSTTR << 20) | (ra << 10) | (rn << 5));
+}
+
 static inline uint32_t syn_serror(uint32_t extra)
 {
     return (EC_SERROR << ARM_EL_EC_SHIFT) | ARM_EL_IL | extra;