diff mbox series

[v5,12/21] gdbstub: Implement read memory (m pkt) with new infra

Message ID 20190424193859.31817-12-arilou@gmail.com
State New
Headers show
Series [v5,01/21] gdbstub: Add infrastructure to parse cmd packets | expand

Commit Message

Jon Doron April 24, 2019, 7:38 p.m. UTC
Signed-off-by: Jon Doron <arilou@gmail.com>
---
 gdbstub.c | 48 ++++++++++++++++++++++++++++++++----------------
 1 file changed, 32 insertions(+), 16 deletions(-)
diff mbox series

Patch

diff --git a/gdbstub.c b/gdbstub.c
index 4522c93fa2..5b60c1369c 100644
--- a/gdbstub.c
+++ b/gdbstub.c
@@ -1711,6 +1711,30 @@  static void handle_write_mem(GdbCmdContext *gdb_ctx, void *user_ctx)
     put_packet(gdb_ctx->s, "OK");
 }
 
+static void handle_read_mem(GdbCmdContext *gdb_ctx, void *user_ctx)
+{
+    if (gdb_ctx->num_params < 2) {
+        put_packet(gdb_ctx->s, "E22");
+        return;
+    }
+
+    /* memtohex() doubles the required space */
+    if (gdb_ctx->params[1].val_ull > MAX_PACKET_LENGTH / 2) {
+        put_packet(gdb_ctx->s, "E22");
+        return;
+    }
+
+    if (target_memory_rw_debug(gdb_ctx->s->g_cpu, gdb_ctx->params[0].val_ull,
+                               gdb_ctx->mem_buf,
+                               gdb_ctx->params[1].val_ull, false)) {
+        put_packet(gdb_ctx->s, "E14");
+        return;
+    }
+
+    memtohex(gdb_ctx->str_buf, gdb_ctx->mem_buf, gdb_ctx->params[1].val_ull);
+    put_packet(gdb_ctx->s, gdb_ctx->str_buf);
+}
+
 static int gdb_handle_packet(GDBState *s, const char *line_buf)
 {
     CPUState *cpu;
@@ -1900,22 +1924,14 @@  static int gdb_handle_packet(GDBState *s, const char *line_buf)
         put_packet(s, "OK");
         break;
     case 'm':
-        addr = strtoull(p, (char **)&p, 16);
-        if (*p == ',')
-            p++;
-        len = strtoull(p, NULL, 16);
-
-        /* memtohex() doubles the required space */
-        if (len > MAX_PACKET_LENGTH / 2) {
-            put_packet (s, "E22");
-            break;
-        }
-
-        if (target_memory_rw_debug(s->g_cpu, addr, mem_buf, len, false) != 0) {
-            put_packet (s, "E14");
-        } else {
-            memtohex(buf, mem_buf, len);
-            put_packet(s, buf);
+        {
+            static const GdbCmdParseEntry read_mem_cmd_desc = {
+                .handler = handle_read_mem,
+                .cmd = "m",
+                .cmd_startswith = 1,
+                .schema = "L,L0"
+            };
+            cmd_parser = &read_mem_cmd_desc;
         }
         break;
     case 'M':