[PATCH v8] target/hexagon: Add guest, system reg number state

[Brian Cain <brian.cain@oss.qualcomm.com>]

From: Brian Cain <bcain@quicinc.com>

Reviewed-by: Taylor Simpson <ltaylorsimpson@gmail.com>
Signed-off-by: Brian Cain <brian.cain@oss.qualcomm.com>
---
 target/hexagon/cpu.h | 11 +++++++++++
 target/hexagon/cpu.c |  5 +++++
 2 files changed, 16 insertions(+)

diff --git a/target/hexagon/cpu.h b/target/hexagon/cpu.h
index e0cf87e5a4c..4bea953ac73 100644
--- a/target/hexagon/cpu.h
+++ b/target/hexagon/cpu.h
@@ -100,6 +100,17 @@ typedef struct CPUArchState {
     target_ulong stack_start;
 
     uint8_t slot_cancelled;
+
+#ifndef CONFIG_USER_ONLY
+    /* Some system registers are per thread and some are global. */
+    uint32_t t_sreg[NUM_SREGS];
+
+    uint32_t greg[NUM_GREGS];
+    uint32_t wait_next_pc;
+
+    /* This alias of CPUState.cpu_index is used by imported sources: */
+    uint32_t threadId;
+#endif
     target_ulong new_value_usr;
 
     MemLog mem_log_stores[STORES_MAX];
diff --git a/target/hexagon/cpu.c b/target/hexagon/cpu.c
index 5bf6e85b939..d30e5b64eac 100644
--- a/target/hexagon/cpu.c
+++ b/target/hexagon/cpu.c
@@ -299,6 +299,11 @@ static void hexagon_cpu_reset_hold(Object *obj, ResetType type)
     set_float_detect_tininess(float_tininess_before_rounding, &env->fp_status);
     /* Default NaN value: sign bit set, all frac bits set */
     set_float_default_nan_pattern(0b11111111, &env->fp_status);
+#ifndef CONFIG_USER_ONLY
+    memset(env->t_sreg, 0, sizeof(uint32_t) * NUM_SREGS);
+    memset(env->greg, 0, sizeof(uint32_t) * NUM_GREGS);
+    env->wait_next_pc = 0;
+#endif
     env->cause_code = HEX_EVENT_NONE;
 }
 
-- 
2.34.1