aboutsummaryrefslogtreecommitdiff
path: root/target/m68k/gdbstub.c
diff options
context:
space:
mode:
Diffstat (limited to 'target/m68k/gdbstub.c')
-rw-r--r--target/m68k/gdbstub.c76
1 files changed, 76 insertions, 0 deletions
diff --git a/target/m68k/gdbstub.c b/target/m68k/gdbstub.c
new file mode 100644
index 0000000000..c7f44c9bb3
--- /dev/null
+++ b/target/m68k/gdbstub.c
@@ -0,0 +1,76 @@
+/*
+ * m68k 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 m68k_cpu_gdb_read_register(CPUState *cs, uint8_t *mem_buf, int n)
+{
+ M68kCPU *cpu = M68K_CPU(cs);
+ CPUM68KState *env = &cpu->env;
+
+ if (n < 8) {
+ /* D0-D7 */
+ return gdb_get_reg32(mem_buf, env->dregs[n]);
+ } else if (n < 16) {
+ /* A0-A7 */
+ return gdb_get_reg32(mem_buf, env->aregs[n - 8]);
+ } else {
+ switch (n) {
+ case 16:
+ return gdb_get_reg32(mem_buf, env->sr);
+ case 17:
+ return gdb_get_reg32(mem_buf, env->pc);
+ }
+ }
+ /* FP registers not included here because they vary between
+ ColdFire and m68k. Use XML bits for these. */
+ return 0;
+}
+
+int m68k_cpu_gdb_write_register(CPUState *cs, uint8_t *mem_buf, int n)
+{
+ M68kCPU *cpu = M68K_CPU(cs);
+ CPUM68KState *env = &cpu->env;
+ uint32_t tmp;
+
+ tmp = ldl_p(mem_buf);
+
+ if (n < 8) {
+ /* D0-D7 */
+ env->dregs[n] = tmp;
+ } else if (n < 16) {
+ /* A0-A7 */
+ env->aregs[n - 8] = tmp;
+ } else {
+ switch (n) {
+ case 16:
+ env->sr = tmp;
+ break;
+ case 17:
+ env->pc = tmp;
+ break;
+ default:
+ return 0;
+ }
+ }
+ return 4;
+}