From 3f2546b2ef55b661fd8dd69682b38992225e86f6 Mon Sep 17 00:00:00 2001
From: fishsoupisgood <github@madingley.org>
Date: Mon, 29 Apr 2019 01:17:54 +0100
Subject: Initial import of qemu-2.4.1

---
 target-lm32/gdbstub.c | 92 +++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 92 insertions(+)
 create mode 100644 target-lm32/gdbstub.c

(limited to 'target-lm32/gdbstub.c')

diff --git a/target-lm32/gdbstub.c b/target-lm32/gdbstub.c
new file mode 100644
index 00000000..4979a98d
--- /dev/null
+++ b/target-lm32/gdbstub.c
@@ -0,0 +1,92 @@
+/*
+ * LM32 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 "config.h"
+#include "qemu-common.h"
+#include "exec/gdbstub.h"
+#include "hw/lm32/lm32_pic.h"
+
+int lm32_cpu_gdb_read_register(CPUState *cs, uint8_t *mem_buf, int n)
+{
+    LM32CPU *cpu = LM32_CPU(cs);
+    CPULM32State *env = &cpu->env;
+
+    if (n < 32) {
+        return gdb_get_reg32(mem_buf, env->regs[n]);
+    } else {
+        switch (n) {
+        case 32:
+            return gdb_get_reg32(mem_buf, env->pc);
+        /* FIXME: put in right exception ID */
+        case 33:
+            return gdb_get_reg32(mem_buf, 0);
+        case 34:
+            return gdb_get_reg32(mem_buf, env->eba);
+        case 35:
+            return gdb_get_reg32(mem_buf, env->deba);
+        case 36:
+            return gdb_get_reg32(mem_buf, env->ie);
+        case 37:
+            return gdb_get_reg32(mem_buf, lm32_pic_get_im(env->pic_state));
+        case 38:
+            return gdb_get_reg32(mem_buf, lm32_pic_get_ip(env->pic_state));
+        }
+    }
+    return 0;
+}
+
+int lm32_cpu_gdb_write_register(CPUState *cs, uint8_t *mem_buf, int n)
+{
+    LM32CPU *cpu = LM32_CPU(cs);
+    CPUClass *cc = CPU_GET_CLASS(cs);
+    CPULM32State *env = &cpu->env;
+    uint32_t tmp;
+
+    if (n > cc->gdb_num_core_regs) {
+        return 0;
+    }
+
+    tmp = ldl_p(mem_buf);
+
+    if (n < 32) {
+        env->regs[n] = tmp;
+    } else {
+        switch (n) {
+        case 32:
+            env->pc = tmp;
+            break;
+        case 34:
+            env->eba = tmp;
+            break;
+        case 35:
+            env->deba = tmp;
+            break;
+        case 36:
+            env->ie = tmp;
+            break;
+        case 37:
+            lm32_pic_set_im(env->pic_state, tmp);
+            break;
+        case 38:
+            lm32_pic_set_ip(env->pic_state, tmp);
+            break;
+        }
+    }
+    return 4;
+}
-- 
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