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-rw-r--r--target/sh4/gdbstub.c147
1 files changed, 147 insertions, 0 deletions
diff --git a/target/sh4/gdbstub.c b/target/sh4/gdbstub.c
new file mode 100644
index 0000000000..13bea00d7d
--- /dev/null
+++ b/target/sh4/gdbstub.c
@@ -0,0 +1,147 @@
+/*
+ * SuperH 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"
+
+/* Hint: Use "set architecture sh4" in GDB to see fpu registers */
+/* FIXME: We should use XML for this. */
+
+int superh_cpu_gdb_read_register(CPUState *cs, uint8_t *mem_buf, int n)
+{
+ SuperHCPU *cpu = SUPERH_CPU(cs);
+ CPUSH4State *env = &cpu->env;
+
+ switch (n) {
+ case 0 ... 7:
+ if ((env->sr & (1u << SR_MD)) && (env->sr & (1u << SR_RB))) {
+ return gdb_get_regl(mem_buf, env->gregs[n + 16]);
+ } else {
+ return gdb_get_regl(mem_buf, env->gregs[n]);
+ }
+ case 8 ... 15:
+ return gdb_get_regl(mem_buf, env->gregs[n]);
+ case 16:
+ return gdb_get_regl(mem_buf, env->pc);
+ case 17:
+ return gdb_get_regl(mem_buf, env->pr);
+ case 18:
+ return gdb_get_regl(mem_buf, env->gbr);
+ case 19:
+ return gdb_get_regl(mem_buf, env->vbr);
+ case 20:
+ return gdb_get_regl(mem_buf, env->mach);
+ case 21:
+ return gdb_get_regl(mem_buf, env->macl);
+ case 22:
+ return gdb_get_regl(mem_buf, cpu_read_sr(env));
+ case 23:
+ return gdb_get_regl(mem_buf, env->fpul);
+ case 24:
+ return gdb_get_regl(mem_buf, env->fpscr);
+ case 25 ... 40:
+ if (env->fpscr & FPSCR_FR) {
+ stfl_p(mem_buf, env->fregs[n - 9]);
+ } else {
+ stfl_p(mem_buf, env->fregs[n - 25]);
+ }
+ return 4;
+ case 41:
+ return gdb_get_regl(mem_buf, env->ssr);
+ case 42:
+ return gdb_get_regl(mem_buf, env->spc);
+ case 43 ... 50:
+ return gdb_get_regl(mem_buf, env->gregs[n - 43]);
+ case 51 ... 58:
+ return gdb_get_regl(mem_buf, env->gregs[n - (51 - 16)]);
+ }
+
+ return 0;
+}
+
+int superh_cpu_gdb_write_register(CPUState *cs, uint8_t *mem_buf, int n)
+{
+ SuperHCPU *cpu = SUPERH_CPU(cs);
+ CPUSH4State *env = &cpu->env;
+
+ switch (n) {
+ case 0 ... 7:
+ if ((env->sr & (1u << SR_MD)) && (env->sr & (1u << SR_RB))) {
+ env->gregs[n + 16] = ldl_p(mem_buf);
+ } else {
+ env->gregs[n] = ldl_p(mem_buf);
+ }
+ break;
+ case 8 ... 15:
+ env->gregs[n] = ldl_p(mem_buf);
+ break;
+ case 16:
+ env->pc = ldl_p(mem_buf);
+ break;
+ case 17:
+ env->pr = ldl_p(mem_buf);
+ break;
+ case 18:
+ env->gbr = ldl_p(mem_buf);
+ break;
+ case 19:
+ env->vbr = ldl_p(mem_buf);
+ break;
+ case 20:
+ env->mach = ldl_p(mem_buf);
+ break;
+ case 21:
+ env->macl = ldl_p(mem_buf);
+ break;
+ case 22:
+ cpu_write_sr(env, ldl_p(mem_buf));
+ break;
+ case 23:
+ env->fpul = ldl_p(mem_buf);
+ break;
+ case 24:
+ env->fpscr = ldl_p(mem_buf);
+ break;
+ case 25 ... 40:
+ if (env->fpscr & FPSCR_FR) {
+ env->fregs[n - 9] = ldfl_p(mem_buf);
+ } else {
+ env->fregs[n - 25] = ldfl_p(mem_buf);
+ }
+ break;
+ case 41:
+ env->ssr = ldl_p(mem_buf);
+ break;
+ case 42:
+ env->spc = ldl_p(mem_buf);
+ break;
+ case 43 ... 50:
+ env->gregs[n - 43] = ldl_p(mem_buf);
+ break;
+ case 51 ... 58:
+ env->gregs[n - (51 - 16)] = ldl_p(mem_buf);
+ break;
+ default:
+ return 0;
+ }
+
+ return 4;
+}