frv: extend gdbstub to support more features of gdb

[safe/jmp/linux-2.6] / arch / frv / kernel / gdb-stub.c

diff --git a/arch/frv/kernel/gdb-stub.c b/arch/frv/kernel/gdb-stub.c
index 7ca8a6b..84d103c 100644 (file)
--- a/arch/frv/kernel/gdb-stub.c
+++ b/arch/frv/kernel/gdb-stub.c
@@ -1344,6 +1344,44 @@ void gdbstub_get_mmu_state(void)
 
 } /* end gdbstub_get_mmu_state() */
 
+/*
+ * handle general query commands of the form 'qXXXXX'
+ */
+static void gdbstub_handle_query(void)
+{
+       if (strcmp(input_buffer, "qAttached") == 0) {
+               /* return current thread ID */
+               sprintf(output_buffer, "1");
+               return;
+       }
+
+       if (strcmp(input_buffer, "qC") == 0) {
+               /* return current thread ID */
+               sprintf(output_buffer, "QC 0");
+               return;
+       }
+
+       if (strcmp(input_buffer, "qOffsets") == 0) {
+               /* return relocation offset of text and data segments */
+               sprintf(output_buffer, "Text=0;Data=0;Bss=0");
+               return;
+       }
+
+       if (strcmp(input_buffer, "qSymbol::") == 0) {
+               sprintf(output_buffer, "OK");
+               return;
+       }
+
+       if (strcmp(input_buffer, "qSupported") == 0) {
+               /* query of supported features */
+               sprintf(output_buffer, "PacketSize=%u;ReverseContinue-;ReverseStep-",
+                       sizeof(input_buffer));
+               return;
+       }
+
+       gdbstub_strcpy(output_buffer,"E01");
+}
+
 /*****************************************************************************/
 /*
  * handle event interception and GDB remote protocol processing
@@ -1840,6 +1878,10 @@ void gdbstub(int sigval)
                case 'k' :
                        goto done;      /* just continue */
 
+                       /* detach */
+               case 'D':
+                       gdbstub_strcpy(output_buffer, "OK");
+                       break;
 
                        /* reset the whole machine (FIXME: system dependent) */
                case 'r':
@@ -1852,6 +1894,14 @@ void gdbstub(int sigval)
                        __debug_status.dcr |= DCR_SE;
                        goto done;
 
+                       /* extended command */
+               case 'v':
+                       if (strcmp(input_buffer, "vCont?") == 0) {
+                               output_buffer[0] = 0;
+                               break;
+                       }
+                       goto unsupported_cmd;
+
                        /* set baud rate (bBB) */
                case 'b':
                        ptr = &input_buffer[1];
@@ -1923,8 +1973,19 @@ void gdbstub(int sigval)
                        gdbstub_strcpy(output_buffer,"OK");
                        break;
 
+                       /* Thread-setting packet */
+               case 'H':
+                       gdbstub_strcpy(output_buffer, "OK");
+                       break;
+
+               case 'q':
+                       gdbstub_handle_query();
+                       break;
+
                default:
+               unsupported_cmd:
                        gdbstub_proto("### GDB Unsupported Cmd '%s'\n",input_buffer);
+                       gdbstub_strcpy(output_buffer,"E01");
                        break;
                }