1 files changed, 131 insertions, 0 deletions
diff --git a/target/cris/gdbstub.c b/target/cris/gdbstub.c
new file mode 100644
index 0000000000..3a72ee2a98
--- /dev/null
+++ b/target/cris/gdbstub.c
@@ -0,0 +1,131 @@
+/*
+ * CRIS 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 crisv10_cpu_gdb_read_register(CPUState *cs, uint8_t *mem_buf, int n)
+{
+    CRISCPU *cpu = CRIS_CPU(cs);
+    CPUCRISState *env = &cpu->env;
+
+    if (n < 15) {
+        return gdb_get_reg32(mem_buf, env->regs[n]);
+    }
+
+    if (n == 15) {
+        return gdb_get_reg32(mem_buf, env->pc);
+    }
+
+    if (n < 32) {
+        switch (n) {
+        case 16:
+            return gdb_get_reg8(mem_buf, env->pregs[n - 16]);
+        case 17:
+            return gdb_get_reg8(mem_buf, env->pregs[n - 16]);
+        case 20:
+        case 21:
+            return gdb_get_reg16(mem_buf, env->pregs[n - 16]);
+        default:
+            if (n >= 23) {
+                return gdb_get_reg32(mem_buf, env->pregs[n - 16]);
+            }
+            break;
+        }
+    }
+    return 0;
+}
+
+int cris_cpu_gdb_read_register(CPUState *cs, uint8_t *mem_buf, int n)
+{
+    CRISCPU *cpu = CRIS_CPU(cs);
+    CPUCRISState *env = &cpu->env;
+    uint8_t srs;
+
+    srs = env->pregs[PR_SRS];
+    if (n < 16) {
+        return gdb_get_reg32(mem_buf, env->regs[n]);
+    }
+
+    if (n >= 21 && n < 32) {
+        return gdb_get_reg32(mem_buf, env->pregs[n - 16]);
+    }
+    if (n >= 33 && n < 49) {
+        return gdb_get_reg32(mem_buf, env->sregs[srs][n - 33]);
+    }
+    switch (n) {
+    case 16:
+        return gdb_get_reg8(mem_buf, env->pregs[0]);
+    case 17:
+        return gdb_get_reg8(mem_buf, env->pregs[1]);
+    case 18:
+        return gdb_get_reg32(mem_buf, env->pregs[2]);
+    case 19:
+        return gdb_get_reg8(mem_buf, srs);
+    case 20:
+        return gdb_get_reg16(mem_buf, env->pregs[4]);
+    case 32:
+        return gdb_get_reg32(mem_buf, env->pc);
+    }
+
+    return 0;
+}
+
+int cris_cpu_gdb_write_register(CPUState *cs, uint8_t *mem_buf, int n)
+{
+    CRISCPU *cpu = CRIS_CPU(cs);
+    CPUCRISState *env = &cpu->env;
+    uint32_t tmp;
+
+    if (n > 49) {
+        return 0;
+    }
+
+    tmp = ldl_p(mem_buf);
+
+    if (n < 16) {
+        env->regs[n] = tmp;
+    }
+
+    if (n >= 21 && n < 32) {
+        env->pregs[n - 16] = tmp;
+    }
+
+    /* FIXME: Should support function regs be writable?  */
+    switch (n) {
+    case 16:
+        return 1;
+    case 17:
+        return 1;
+    case 18:
+        env->pregs[PR_PID] = tmp;
+        break;
+    case 19:
+        return 1;
+    case 20:
+        return 2;
+    case 32:
+        env->pc = tmp;
+        break;
+    }
+
+    return 4;
+}