qdev: Make PropertyInfo.print method get Object* argument

[qemu.git] / gdbstub.c

diff --git a/gdbstub.c b/gdbstub.c
index 6950fd243f34154ddd270d823502a1fce815db2b..f19f98ab1ab7d36c53a715bf885c77cfe01675d7 100644 (file)
--- a/gdbstub.c
+++ b/gdbstub.c
@@ -30,7 +30,7 @@
 #include "qemu/ctype.h"
 #include "qemu/cutils.h"
 #include "qemu/module.h"
-#include "trace-root.h"
+#include "trace/trace-root.h"
 #ifdef CONFIG_USER_ONLY
 #include "qemu.h"
 #else
@@ -51,6 +51,7 @@
 #include "sysemu/runstate.h"
 #include "hw/semihosting/semihost.h"
 #include "exec/exec-all.h"
+#include "sysemu/replay.h"
 
 #ifdef CONFIG_USER_ONLY
 #define GDB_ATTACHED "0"
@@ -375,6 +376,20 @@ typedef struct GDBState {
  */
 static int sstep_flags = SSTEP_ENABLE|SSTEP_NOIRQ|SSTEP_NOTIMER;
 
+/* Retrieves flags for single step mode. */
+static int get_sstep_flags(void)
+{
+    /*
+     * In replay mode all events written into the log should be replayed.
+     * That is why NOIRQ flag is removed in this mode.
+     */
+    if (replay_mode != REPLAY_MODE_NONE) {
+        return SSTEP_ENABLE;
+    } else {
+        return sstep_flags;
+    }
+}
+
 static GDBState gdbserver_state;
 
 static void init_gdbserver_state(void)
@@ -501,7 +516,7 @@ static int gdb_continue_partial(char *newstates)
                 break; /* nothing to do here */
             case 's':
                 trace_gdbstub_op_stepping(cpu->cpu_index);
-                cpu_single_step(cpu, sstep_flags);
+                cpu_single_step(cpu, get_sstep_flags());
                 cpu_resume(cpu);
                 flag = 1;
                 break;
@@ -1874,10 +1889,38 @@ static void handle_step(GdbCmdContext *gdb_ctx, void *user_ctx)
         gdb_set_cpu_pc((target_ulong)gdb_ctx->params[0].val_ull);
     }
 
-    cpu_single_step(gdbserver_state.c_cpu, sstep_flags);
+    cpu_single_step(gdbserver_state.c_cpu, get_sstep_flags());
     gdb_continue();
 }
 
+static void handle_backward(GdbCmdContext *gdb_ctx, void *user_ctx)
+{
+    if (replay_mode != REPLAY_MODE_PLAY) {
+        put_packet("E22");
+    }
+    if (gdb_ctx->num_params == 1) {
+        switch (gdb_ctx->params[0].opcode) {
+        case 's':
+            if (replay_reverse_step()) {
+                gdb_continue();
+            } else {
+                put_packet("E14");
+            }
+            return;
+        case 'c':
+            if (replay_reverse_continue()) {
+                gdb_continue();
+            } else {
+                put_packet("E14");
+            }
+            return;
+        }
+    }
+
+    /* Default invalid command */
+    put_packet("");
+}
+
 static void handle_v_cont_query(GdbCmdContext *gdb_ctx, void *user_ctx)
 {
     put_packet("vCont;c;C;s;S");
@@ -2059,7 +2102,7 @@ static void handle_query_thread_extra(GdbCmdContext *gdb_ctx, void *user_ctx)
         /* Print the CPU model and name in multiprocess mode */
         ObjectClass *oc = object_get_class(OBJECT(cpu));
         const char *cpu_model = object_class_get_name(oc);
-        g_autofree char *cpu_name =
+        const char *cpu_name =
             object_get_canonical_path_component(OBJECT(cpu));
         g_string_printf(rs, "%s %s [%s]", cpu_model, cpu_name,
                         cpu->halted ? "halted " : "running");
@@ -2124,6 +2167,11 @@ static void handle_query_supported(GdbCmdContext *gdb_ctx, void *user_ctx)
         g_string_append(gdbserver_state.str_buf, ";qXfer:features:read+");
     }
 
+    if (replay_mode == REPLAY_MODE_PLAY) {
+        g_string_append(gdbserver_state.str_buf,
+            ";ReverseStep+;ReverseContinue+");
+    }
+
     if (gdb_ctx->num_params &&
         strstr(gdb_ctx->params[0].data, "multiprocess+")) {
         gdbserver_state.multiprocess = true;
@@ -2460,6 +2508,17 @@ static int gdb_handle_packet(const char *line_buf)
             cmd_parser = &step_cmd_desc;
         }
         break;
+    case 'b':
+        {
+            static const GdbCmdParseEntry backward_cmd_desc = {
+                .handler = handle_backward,
+                .cmd = "b",
+                .cmd_startswith = 1,
+                .schema = "o0"
+            };
+            cmd_parser = &backward_cmd_desc;
+        }
+        break;
     case 'F':
         {
             static const GdbCmdParseEntry file_io_cmd_desc = {
@@ -3262,6 +3321,7 @@ static void gdb_chr_event(void *opaque, QEMUChrEvent event)
         s->g_cpu = s->c_cpu;
 
         vm_stop(RUN_STATE_PAUSED);
+        replay_gdb_attached();
         gdb_has_xml = false;
         break;
     default: