include/exec: Introduce env_cpu_const()

It's the same as env_cpu(), but for const objects.

Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Ilya Leoshkevich <iii@linux.ibm.com>
Message-ID: <20240912093012.402366-2-iii@linux.ibm.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>

2 files changed, 13 insertions, 2 deletions

diff --git a/include/exec/cpu-common.h b/include/exec/cpu-common.h
index 2e1b499..638dc80 100644
--- a/include/exec/cpu-common.h
+++ b/include/exec/cpu-common.h
@@ -239,6 +239,17 @@ static inline ArchCPU *env_archcpu(CPUArchState *env)
 }
 
 /**
+ * env_cpu_const(env)
+ * @env: The architecture environment
+ *
+ * Return the CPUState associated with the environment.
+ */
+static inline const CPUState *env_cpu_const(const CPUArchState *env)
+{
+    return (void *)env - sizeof(CPUState);
+}
+
+/**
  * env_cpu(env)
  * @env: The architecture environment
  *
@@ -246,7 +257,7 @@ static inline ArchCPU *env_archcpu(CPUArchState *env)
  */
 static inline CPUState *env_cpu(CPUArchState *env)
 {
-    return (void *)env - sizeof(CPUState);
+    return (CPUState *)env_cpu_const(env);
 }
 
 #ifndef CONFIG_USER_ONLY
diff --git a/linux-user/elfload.c b/linux-user/elfload.c
index 52c88a6..352960b 100644
--- a/linux-user/elfload.c
+++ b/linux-user/elfload.c
@@ -4314,7 +4314,7 @@ static int wmr_write_region(void *opaque, target_ulong start,
  */
 static int elf_core_dump(int signr, const CPUArchState *env)
 {
-    const CPUState *cpu = env_cpu((CPUArchState *)env);
+    const CPUState *cpu = env_cpu_const(env);
     const TaskState *ts = (const TaskState *)get_task_state((CPUState *)cpu);
     struct rlimit dumpsize;
     CountAndSizeRegions css;