[PATCH v2 15/21] gdbstub: introduce gdb_get_max_cpus

[Alex Bennée]

This is needed for handling vcont packets as the way of calculating
max cpus vhanges between user and softmmu mode.

Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
---
 gdbstub/internals.h |  1 +
 gdbstub/gdbstub.c   | 11 +----------
 gdbstub/softmmu.c   |  9 +++++++++
 gdbstub/user.c      | 17 +++++++++++++++++
 4 files changed, 28 insertions(+), 10 deletions(-)

diff --git a/gdbstub/internals.h b/gdbstub/internals.h
index 55f3d820aa..a371373c1d 100644
--- a/gdbstub/internals.h
+++ b/gdbstub/internals.h
@@ -125,6 +125,7 @@ bool gdb_got_immediate_ack(void);
 CPUState *gdb_first_attached_cpu(void);
 void gdb_append_thread_id(CPUState *cpu, GString *buf);
 int gdb_get_cpu_index(CPUState *cpu);
+unsigned int gdb_get_max_cpus(void); /* both */
 
 void gdb_create_default_process(GDBState *s);
 
diff --git a/gdbstub/gdbstub.c b/gdbstub/gdbstub.c
index 91021859a1..f9950200b8 100644
--- a/gdbstub/gdbstub.c
+++ b/gdbstub/gdbstub.c
@@ -624,16 +624,7 @@ static int gdb_handle_vcont(const char *p)
     GDBProcess *process;
     CPUState *cpu;
     GDBThreadIdKind kind;
-#ifdef CONFIG_USER_ONLY
-    int max_cpus = 1; /* global variable max_cpus exists only in system mode */
-
-    CPU_FOREACH(cpu) {
-        max_cpus = max_cpus <= cpu->cpu_index ? cpu->cpu_index + 1 : max_cpus;
-    }
-#else
-    MachineState *ms = MACHINE(qdev_get_machine());
-    unsigned int max_cpus = ms->smp.max_cpus;
-#endif
+    unsigned int max_cpus = gdb_get_max_cpus();
     /* uninitialised CPUs stay 0 */
     newstates = g_new0(char, max_cpus);
 
diff --git a/gdbstub/softmmu.c b/gdbstub/softmmu.c
index c42230acca..015848358a 100644
--- a/gdbstub/softmmu.c
+++ b/gdbstub/softmmu.c
@@ -436,6 +436,15 @@ int gdb_target_memory_rw_debug(CPUState *cpu, hwaddr addr,
     return cpu_memory_rw_debug(cpu, addr, buf, len, is_write);
 }
 
+/*
+ * cpu helpers
+ */
+
+unsigned int gdb_get_max_cpus(void)
+{
+    MachineState *ms = MACHINE(qdev_get_machine());
+    return ms->smp.max_cpus;
+}
 
 /*
  * Softmmu specific command helpers
diff --git a/gdbstub/user.c b/gdbstub/user.c
index 74f541223c..9556a272d7 100644
--- a/gdbstub/user.c
+++ b/gdbstub/user.c
@@ -391,6 +391,23 @@ int gdb_target_memory_rw_debug(CPUState *cpu, hwaddr addr,
     return cpu_memory_rw_debug(cpu, addr, buf, len, is_write);
 }
 
+/*
+ * cpu helpers
+ */
+
+unsigned int gdb_get_max_cpus(void)
+{
+    CPUState *cpu;
+    unsigned int max_cpus = 1; /* global variable max_cpus exists only in 
system mode */
+
+    CPU_FOREACH(cpu) {
+        max_cpus = max_cpus <= cpu->cpu_index ? cpu->cpu_index + 1 : max_cpus;
+    }
+
+    return max_cpus;
+}
+
+
 /*
  * Break/Watch point helpers
  */
-- 
2.34.1