diff mbox series

[PULL,41/52] gdbstub: Implement get register (p pkt) with new infra

Message ID 20190607090552.12434-42-alex.bennee@linaro.org (mailing list archive)
State New, archived
Headers show
Series [PULL,01/52] editorconfig: add setting for shell scripts | expand

Commit Message

Alex Bennée June 7, 2019, 9:05 a.m. UTC
From: Jon Doron <arilou@gmail.com>

Signed-off-by: Jon Doron <arilou@gmail.com>
Message-Id: <20190529064148.19856-10-arilou@gmail.com>
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
diff mbox series

Patch

diff --git a/gdbstub.c b/gdbstub.c
index 630f931765..63809b2ab9 100644
--- a/gdbstub.c
+++ b/gdbstub.c
@@ -1672,6 +1672,36 @@  static void handle_set_reg(GdbCmdContext *gdb_ctx, void *user_ctx)
     put_packet(gdb_ctx->s, "OK");
 }
 
+static void handle_get_reg(GdbCmdContext *gdb_ctx, void *user_ctx)
+{
+    int reg_size;
+
+    /*
+     * Older gdb are really dumb, and don't use 'g' if 'p' is avaialable.
+     * This works, but can be very slow.  Anything new enough to
+     * understand XML also knows how to use this properly.
+     */
+    if (!gdb_has_xml) {
+        put_packet(gdb_ctx->s, "");
+        return;
+    }
+
+    if (!gdb_ctx->num_params) {
+        put_packet(gdb_ctx->s, "E14");
+        return;
+    }
+
+    reg_size = gdb_read_register(gdb_ctx->s->g_cpu, gdb_ctx->mem_buf,
+                                 gdb_ctx->params[0].val_ull);
+    if (!reg_size) {
+        put_packet(gdb_ctx->s, "E14");
+        return;
+    }
+
+    memtohex(gdb_ctx->str_buf, gdb_ctx->mem_buf, reg_size);
+    put_packet(gdb_ctx->s, gdb_ctx->str_buf);
+}
+
 static int gdb_handle_packet(GDBState *s, const char *line_buf)
 {
     CPUState *cpu;
@@ -1901,18 +1931,14 @@  static int gdb_handle_packet(GDBState *s, const char *line_buf)
         }
         break;
     case 'p':
-        /* Older gdb are really dumb, and don't use 'g' if 'p' is avaialable.
-           This works, but can be very slow.  Anything new enough to
-           understand XML also knows how to use this properly.  */
-        if (!gdb_has_xml)
-            goto unknown_command;
-        addr = strtoull(p, (char **)&p, 16);
-        reg_size = gdb_read_register(s->g_cpu, mem_buf, addr);
-        if (reg_size) {
-            memtohex(buf, mem_buf, reg_size);
-            put_packet(s, buf);
-        } else {
-            put_packet(s, "E14");
+        {
+            static const GdbCmdParseEntry get_reg_cmd_desc = {
+                .handler = handle_get_reg,
+                .cmd = "p",
+                .cmd_startswith = 1,
+                .schema = "L0"
+            };
+            cmd_parser = &get_reg_cmd_desc;
         }
         break;
     case 'P':