qemu: Introduce target_long_bits()

Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>

include/qemu/target-info-impl.h

@@ -14,6 +14,8 @@
 typedef struct TargetInfo {
     /* runtime equivalent of TARGET_NAME definition */
     const char *target_name;
+    /* runtime equivalent of TARGET_LONG_BITS definition */
+    unsigned long_bits;
     /* runtime equivalent of CPU_RESOLVING_TYPE definition */
     const char *cpu_type;
     /* QOM typename machines for this binary must implement */

include/qemu/target-info.h

@@ -16,6 +16,13 @@
  */
 const char *target_name(void);
 
+/**
+ * target_long_bits:
+ *
+ * Returns: number of bits in a long type for this target (i.e. 64).
+ */
+unsigned target_long_bits(void);
+
 /**
  * target_machine_typename:
  *

target-info-stub.c

@@ -14,6 +14,7 @@
 
 static const TargetInfo target_info_stub = {
     .target_name = TARGET_NAME,
+    .long_bits = TARGET_LONG_BITS,
     .cpu_type = CPU_RESOLVING_TYPE,
     .machine_typename = TYPE_MACHINE,
 };

target-info.c

@@ -15,6 +15,11 @@ const char *target_name(void)
     return target_info()->target_name;
 }
 
+unsigned target_long_bits(void)
+{
+    return target_info()->long_bits;
+}
+
 const char *target_cpu_type(void)
 {
     return target_info()->cpu_type;