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Diffstat (limited to 'target/openrisc/gdbstub.c')
-rw-r--r--target/openrisc/gdbstub.c84
1 files changed, 84 insertions, 0 deletions
diff --git a/target/openrisc/gdbstub.c b/target/openrisc/gdbstub.c
new file mode 100644
index 0000000000..cb16e76358
--- /dev/null
+++ b/target/openrisc/gdbstub.c
@@ -0,0 +1,84 @@
+/*
+ * 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/>.
+ */
+#include "qemu/osdep.h"
+#include "qemu-common.h"
+#include "cpu.h"
+#include "exec/gdbstub.h"
+
+int openrisc_cpu_gdb_read_register(CPUState *cs, uint8_t *mem_buf, int n)
+{
+ OpenRISCCPU *cpu = OPENRISC_CPU(cs);
+ CPUOpenRISCState *env = &cpu->env;
+
+ if (n < 32) {
+ return gdb_get_reg32(mem_buf, env->gpr[n]);
+ } else {
+ switch (n) {
+ case 32: /* PPC */
+ return gdb_get_reg32(mem_buf, env->ppc);
+
+ case 33: /* NPC */
+ return gdb_get_reg32(mem_buf, env->npc);
+
+ case 34: /* SR */
+ return gdb_get_reg32(mem_buf, env->sr);
+
+ default:
+ break;
+ }
+ }
+ return 0;
+}
+
+int openrisc_cpu_gdb_write_register(CPUState *cs, uint8_t *mem_buf, int n)
+{
+ OpenRISCCPU *cpu = OPENRISC_CPU(cs);
+ CPUClass *cc = CPU_GET_CLASS(cs);
+ CPUOpenRISCState *env = &cpu->env;
+ 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;
+}