[PATCH v2 38/40] target/hexagon: Add clear_wait_mode() definition

[Brian Cain]

From: Brian Cain <bc...@quicinc.com>

Reviewed-by: Taylor Simpson <ltaylorsimp...@gmail.com>
Signed-off-by: Brian Cain <brian.c...@oss.qualcomm.com>
---
 target/hexagon/cpu_helper.h |  1 +
 target/hexagon/cpu_helper.c | 13 +++++++++++++
 2 files changed, 14 insertions(+)

diff --git a/target/hexagon/cpu_helper.h b/target/hexagon/cpu_helper.h
index e0c0c037a6..6f0c6697ad 100644
--- a/target/hexagon/cpu_helper.h
+++ b/target/hexagon/cpu_helper.h
@@ -16,6 +16,7 @@ void hexagon_set_sys_pcycle_count_low(CPUHexagonState *env, 
uint32_t);
 void hexagon_set_sys_pcycle_count_high(CPUHexagonState *env, uint32_t);
 void hexagon_modify_ssr(CPUHexagonState *env, uint32_t new, uint32_t old);
 int get_exe_mode(CPUHexagonState *env);
+void clear_wait_mode(CPUHexagonState *env);
 
 static inline void arch_set_thread_reg(CPUHexagonState *env, uint32_t reg,
                                        uint32_t val)
diff --git a/target/hexagon/cpu_helper.c b/target/hexagon/cpu_helper.c
index bc51714406..00f47e5a07 100644
--- a/target/hexagon/cpu_helper.c
+++ b/target/hexagon/cpu_helper.c
@@ -76,6 +76,19 @@ void hexagon_modify_ssr(CPUHexagonState *env, uint32_t new, 
uint32_t old)
     g_assert_not_reached();
 }
 
+void clear_wait_mode(CPUHexagonState *env)
+{
+    g_assert(bql_locked());
+
+    HexagonCPU *cpu = env_archcpu(env);
+    if (cpu->globalregs) {
+        const uint32_t modectl = arch_get_system_reg(env, HEX_SREG_MODECTL);
+        uint32_t thread_wait_mask = GET_FIELD(MODECTL_W, modectl);
+        thread_wait_mask &= ~(0x1 << env->threadId);
+        SET_SYSTEM_FIELD(env, HEX_SREG_MODECTL, MODECTL_W, thread_wait_mask);
+    }
+}
+
 int get_exe_mode(CPUHexagonState *env)
 {
     g_assert_not_reached();
-- 
2.34.1