gdbstub: Implement thread_alive (T pkt) with new infra

Signed-off-by: Jon Doron <arilou@gmail.com>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Message-Id: <20190529064148.19856-4-arilou@gmail.com>
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>

1 files changed, 32 insertions, 11 deletions

diff --git a/gdbstub.c b/gdbstub.c
index 907bff6c07..89d5dcf07a 100644
--- a/gdbstub.c
+++ b/gdbstub.c
@@ -1511,6 +1511,30 @@ static void handle_detach(GdbCmdContext *gdb_ctx, void *user_ctx)
     put_packet(s, "OK");
 }
 
+static void handle_thread_alive(GdbCmdContext *gdb_ctx, void *user_ctx)
+{
+    CPUState *cpu;
+
+    if (!gdb_ctx->num_params) {
+        put_packet(gdb_ctx->s, "E22");
+        return;
+    }
+
+    if (gdb_ctx->params[0].thread_id.kind == GDB_READ_THREAD_ERR) {
+        put_packet(gdb_ctx->s, "E22");
+        return;
+    }
+
+    cpu = gdb_get_cpu(gdb_ctx->s, gdb_ctx->params[0].thread_id.pid,
+                      gdb_ctx->params[0].thread_id.tid);
+    if (!cpu) {
+        put_packet(gdb_ctx->s, "E22");
+        return;
+    }
+
+    put_packet(gdb_ctx->s, "OK");
+}
+
 static int gdb_handle_packet(GDBState *s, const char *line_buf)
 {
     CPUState *cpu;
@@ -1811,17 +1835,14 @@ static int gdb_handle_packet(GDBState *s, const char *line_buf)
         }
         break;
     case 'T':
-        thread_kind = read_thread_id(p, &p, &pid, &tid);
-        if (thread_kind == GDB_READ_THREAD_ERR) {
-            put_packet(s, "E22");
-            break;
-        }
-        cpu = gdb_get_cpu(s, pid, tid);
-
-        if (cpu != NULL) {
-            put_packet(s, "OK");
-        } else {
-            put_packet(s, "E22");
+        {
+            static const GdbCmdParseEntry thread_alive_cmd_desc = {
+                .handler = handle_thread_alive,
+                .cmd = "T",
+                .cmd_startswith = 1,
+                .schema = "t0"
+            };
+            cmd_parser = &thread_alive_cmd_desc;
         }
         break;
     case 'q':