[v5,15/73] cpu: define cpu_halted helpers

Commit Message

Emilio Cota Dec. 13, 2018, 5:03 a.m. UTC

cpu->halted will soon be protected by cpu->lock.
We will use these helpers to ease the transition,
since right now cpu->halted has many direct callers.

Reviewed-by: Richard Henderson <[e-mail]>
Reviewed-by: Alex Bennée <[e-mail]>
Signed-off-by: Emilio G. Cota <[e-mail]>
---
 include/qom/cpu.h | 24 ++++++++++++++++++++++++
 1 file changed, 24 insertions(+)

Patch

diff --git a/include/qom/cpu.h b/include/qom/cpu.h
index 505daa6ce9..9c5aad1797 100644
--- a/include/qom/cpu.h
+++ b/include/qom/cpu.h
@@ -481,6 +481,30 @@  bool cpu_mutex_locked(const CPUState *cpu);
  */
 bool no_cpu_mutex_locked(void);
 
+static inline uint32_t cpu_halted(CPUState *cpu)
+{
+    uint32_t ret;
+
+    if (cpu_mutex_locked(cpu)) {
+        return cpu->halted;
+    }
+    cpu_mutex_lock(cpu);
+    ret = cpu->halted;
+    cpu_mutex_unlock(cpu);
+    return ret;
+}
+
+static inline void cpu_halted_set(CPUState *cpu, uint32_t val)
+{
+    if (cpu_mutex_locked(cpu)) {
+        cpu->halted = val;
+        return;
+    }
+    cpu_mutex_lock(cpu);
+    cpu->halted = val;
+    cpu_mutex_unlock(cpu);
+}
+
 static inline void cpu_tb_jmp_cache_clear(CPUState *cpu)
 {
     unsigned int i;