Follow the convention that all the pieces of the global stub state must
be inside a single struct. While at it, convert phy_memory_mode to
bool.

Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Ilya Leoshkevich <iii@linux.ibm.com>
---
 gdbstub/system.c | 12 ++++++------
 1 file changed, 6 insertions(+), 6 deletions(-)

diff --git a/gdbstub/system.c b/gdbstub/system.c
index c9f236e94f7..2e31e42f7dd 100644
--- a/gdbstub/system.c
+++ b/gdbstub/system.c
@@ -35,6 +35,7 @@
 typedef struct {
     CharBackend chr;
     Chardev *mon_chr;
+    bool phy_memory_mode;
 } GDBSystemState;
 
 GDBSystemState gdbserver_system_state;
@@ -445,14 +446,12 @@ void gdb_qemu_exit(int code)
 /*
  * Memory access
  */
-static int phy_memory_mode;
-
 int gdb_target_memory_rw_debug(CPUState *cpu, hwaddr addr,
                                uint8_t *buf, int len, bool is_write)
 {
     CPUClass *cc;
 
-    if (phy_memory_mode) {
+    if (gdbserver_system_state.phy_memory_mode) {
         if (is_write) {
             cpu_physical_memory_write(addr, buf, len);
         } else {
@@ -491,7 +490,8 @@ bool gdb_can_reverse(void)
 void gdb_handle_query_qemu_phy_mem_mode(GArray *params,
                                         void *ctx)
 {
-    g_string_printf(gdbserver_state.str_buf, "%d", phy_memory_mode);
+    g_string_printf(gdbserver_state.str_buf, "%d",
+                    gdbserver_system_state.phy_memory_mode);
     gdb_put_strbuf();
 }
 
@@ -503,9 +503,9 @@ void gdb_handle_set_qemu_phy_mem_mode(GArray *params, void *ctx)
     }
 
     if (!gdb_get_cmd_param(params, 0)->val_ul) {
-        phy_memory_mode = 0;
+        gdbserver_system_state.phy_memory_mode = false;
     } else {
-        phy_memory_mode = 1;
+        gdbserver_system_state.phy_memory_mode = true;
     }
     gdb_put_packet("OK");
 }
-- 
2.46.2