[Qemu-devel] [PATCH 2/4] semihosting: remove semihosting_target declaration from gdbstub.h

[Leon Alrae <leon.alrae@imgtec.com>]

Follow the semihosting_enabled() approach and move semihosting_target
related stuff to semihost.h.

Signed-off-by: Leon Alrae <leon.alrae@imgtec.com>
---
 gdbstub.c               |  8 ++++----
 include/exec/gdbstub.h  |  6 ------
 include/exec/semihost.h | 12 ++++++++++++
 vl.c                    |  6 ++++++
 4 files changed, 22 insertions(+), 10 deletions(-)

diff --git a/gdbstub.c b/gdbstub.c
index 8abcb8a..9931d81 100644
--- a/gdbstub.c
+++ b/gdbstub.c
@@ -40,6 +40,7 @@
 #include "cpu.h"
 #include "qemu/sockets.h"
 #include "sysemu/kvm.h"
+#include "exec/semihost.h"
 
 static inline int target_memory_rw_debug(CPUState *cpu, target_ulong addr,
                                          uint8_t *buf, int len, bool is_write)
@@ -317,8 +318,6 @@ static GDBState *gdbserver_state;
 
 bool gdb_has_xml;
 
-int semihosting_target = SEMIHOSTING_TARGET_AUTO;
-
 #ifdef CONFIG_USER_ONLY
 /* XXX: This is not thread safe.  Do we care?  */
 static int gdbserver_fd = -1;
@@ -356,10 +355,11 @@ static enum {
 /* Decide if either remote gdb syscalls or native file IO should be used. */
 int use_gdb_syscalls(void)
 {
-    if (semihosting_target == SEMIHOSTING_TARGET_NATIVE) {
+    SemihostingTarget target = semihosting_get_target();
+    if (target == SEMIHOSTING_TARGET_NATIVE) {
         /* -semihosting-config target=native */
         return false;
-    } else if (semihosting_target == SEMIHOSTING_TARGET_GDB) {
+    } else if (target == SEMIHOSTING_TARGET_GDB) {
         /* -semihosting-config target=gdb */
         return true;
     }
diff --git a/include/exec/gdbstub.h b/include/exec/gdbstub.h
index c633248..a608a26 100644
--- a/include/exec/gdbstub.h
+++ b/include/exec/gdbstub.h
@@ -95,10 +95,4 @@ extern bool gdb_has_xml;
 /* in gdbstub-xml.c, generated by scripts/feature_to_c.sh */
 extern const char *const xml_builtin[][2];
 
-/* Command line option defining whether semihosting should go via gdb or not */
-extern int semihosting_target;
-#define SEMIHOSTING_TARGET_AUTO     0
-#define SEMIHOSTING_TARGET_NATIVE   1
-#define SEMIHOSTING_TARGET_GDB      2
-
 #endif
diff --git a/include/exec/semihost.h b/include/exec/semihost.h
index 5d9a916..c2f0bcb 100644
--- a/include/exec/semihost.h
+++ b/include/exec/semihost.h
@@ -20,13 +20,25 @@
 #ifndef SEMIHOST_H
 #define SEMIHOST_H
 
+typedef enum SemihostingTarget {
+    SEMIHOSTING_TARGET_AUTO = 0,
+    SEMIHOSTING_TARGET_NATIVE,
+    SEMIHOSTING_TARGET_GDB
+} SemihostingTarget;
+
 #ifdef CONFIG_USER_ONLY
 static inline bool semihosting_enabled(void)
 {
     return true;
 }
+
+static inline SemihostingTarget semihosting_get_target(void)
+{
+    return SEMIHOSTING_TARGET_AUTO;
+}
 #else
 bool semihosting_enabled(void);
+SemihostingTarget semihosting_get_target(void);
 #endif
 
 #endif
diff --git a/vl.c b/vl.c
index 5a8040d..a42f127 100644
--- a/vl.c
+++ b/vl.c
@@ -1228,12 +1228,18 @@ static void configure_msg(QemuOpts *opts)
 /* Semihosting */
 
 static bool semihosting_allowed;
+static SemihostingTarget semihosting_target;
 
 bool semihosting_enabled(void)
 {
     return semihosting_allowed;
 }
 
+SemihostingTarget semihosting_get_target(void)
+{
+    return semihosting_target;
+}
+
 /***********************************************************/
 /* USB devices */