1 files changed, 77 insertions, 0 deletions
diff --git a/target-openrisc/gdbstub.c b/target-openrisc/gdbstub.c
new file mode 100644
index 0000000000..fba096aa1c
--- /dev/null
+++ b/target-openrisc/gdbstub.c
@@ -0,0 +1,77 @@
+/*
+ * OpenRISC gdb server stub
+ *
+ * Copyright (c) 2003-2005 Fabrice Bellard
+ * Copyright (c) 2013 SUSE LINUX Products GmbH
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, see <http://www.gnu.org/licenses/>.
+ */
+
+static int cpu_gdb_read_register(CPUOpenRISCState *env, uint8_t *mem_buf, int n)
+{
+    if (n < 32) {
+        GET_REG32(env->gpr[n]);
+    } else {
+        switch (n) {
+        case 32:    /* PPC */
+            GET_REG32(env->ppc);
+
+        case 33:    /* NPC */
+            GET_REG32(env->npc);
+
+        case 34:    /* SR */
+            GET_REG32(env->sr);
+
+        default:
+            break;
+        }
+    }
+    return 0;
+}
+
+static int cpu_gdb_write_register(CPUOpenRISCState *env,
+                                  uint8_t *mem_buf, int n)
+{
+    OpenRISCCPU *cpu = openrisc_env_get_cpu(env);
+    CPUClass *cc = CPU_GET_CLASS(cpu);
+    uint32_t tmp;
+
+    if (n > cc->gdb_num_core_regs) {
+        return 0;
+    }
+
+    tmp = ldl_p(mem_buf);
+
+    if (n < 32) {
+        env->gpr[n] = tmp;
+    } else {
+        switch (n) {
+        case 32: /* PPC */
+            env->ppc = tmp;
+            break;
+
+        case 33: /* NPC */
+            env->npc = tmp;
+            break;
+
+        case 34: /* SR */
+            env->sr = tmp;
+            break;
+
+        default:
+            break;
+        }
+    }
+    return 4;
+}