--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/symbian-qemu-0.9.1-12/qemu-symbian-svp/hw/syborg_snapshot.c	Fri Jul 31 15:01:17 2009 +0100
@@ -0,0 +1,171 @@
+/*
+ * Syborg snapshot device
+ *
+ * Copyright (c) 2008 CodeSourcery
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+
+#include "hw.h"
+#include "qemu-char.h"
+#include "syborg.h"
+#include "devtree.h"
+#include "sysemu.h"
+
+//#define DEBUG_SYBORG_SNAPSHOT
+
+#ifdef DEBUG_SYBORG_SNAPSHOT
+#define DPRINTF(fmt, args...) \
+do { printf("syborg_snapshot: " fmt , ##args); } while (0)
+#define BADF(fmt, args...) \
+do { fprintf(stderr, "syborg_snapshot: error: " fmt , ##args); exit(1);} while (0)
+#else
+#define DPRINTF(fmt, args...) do {} while(0)
+#define BADF(fmt, args...) \
+do { fprintf(stderr, "syborg_snapshot: error: " fmt , ##args);} while (0)
+#endif
+
+enum {
+    SNAPSHOT_ID           = 0,
+    SNAPSHOT_ADDRESS      = 1,
+    SNAPSHOT_LENGTH       = 2,
+    SNAPSHOT_TRIGGER      = 3
+};
+
+typedef struct {
+    QEMUDevice *qdev;
+    uint32_t address;
+    uint32_t length;
+} syborg_snapshot_state;
+
+static void syborg_snapshot_trigger(syborg_snapshot_state *s, uint32_t value)
+{
+    char *buf;
+
+    buf = qemu_malloc(s->length + 1);
+    if (!buf)
+        return;
+    cpu_physical_memory_read(s->address, (void *)buf, s->length);
+    buf[s->length] = 0;
+    switch (value) {
+    case 1:
+        DPRINTF("Snapshotting to %s\n", buf);
+        qemu_snapshot_request(buf);
+        break;
+    case 2:
+        DPRINTF("Restoring from %s\n", buf);
+        qemu_snapshot_request_restore(buf);
+        break;
+    default:
+        break;
+    }
+    qemu_free(buf);
+}
+
+static uint32_t syborg_snapshot_read(void *opaque, target_phys_addr_t offset)
+{
+    syborg_snapshot_state *s = (syborg_snapshot_state *)opaque;
+    
+    offset &= 0xfff;
+    DPRINTF("read 0x%x\n", (int)offset);
+    switch(offset >>2) {
+    case SNAPSHOT_ID:
+        return SYBORG_ID_SNAPSHOT;
+    case SNAPSHOT_ADDRESS:
+        return s->address;
+    case SNAPSHOT_LENGTH:
+        return s->length;
+    default:
+        BADF("Bad read offset %x\n", (int)offset);
+        return 0;  
+    }
+}
+
+static void syborg_snapshot_write(void *opaque, target_phys_addr_t offset,
+                                  uint32_t value)
+{
+    syborg_snapshot_state *s = (syborg_snapshot_state *)opaque;
+    
+    offset &= 0xfff;
+    DPRINTF("Write 0x%x=0x%x\n", (int)offset, value);
+    switch (offset >> 2) {
+    case SNAPSHOT_ADDRESS:
+        s->address = value;
+        break;
+    case SNAPSHOT_LENGTH:
+        s->length = value;
+        break;
+    case SNAPSHOT_TRIGGER:
+        syborg_snapshot_trigger(s, value);
+        break;
+    default:
+        BADF("Bad write offset %x\n", (int)offset);
+        break;
+    }
+}
+
+static CPUReadMemoryFunc *syborg_snapshot_readfn[] = {
+     syborg_snapshot_read,
+     syborg_snapshot_read,
+     syborg_snapshot_read
+};
+
+static CPUWriteMemoryFunc *syborg_snapshot_writefn[] = {
+     syborg_snapshot_write,
+     syborg_snapshot_write,
+     syborg_snapshot_write
+};
+
+static void syborg_snapshot_save(QEMUFile *f, void *opaque)
+{
+    syborg_snapshot_state *s = opaque;
+
+    qemu_put_be32(f, s->address);
+    qemu_put_be32(f, s->length);
+}
+
+static int syborg_snapshot_load(QEMUFile *f, void *opaque, int version_id)
+{
+    syborg_snapshot_state *s = opaque;
+
+    if (version_id != 1)
+        return -EINVAL;
+
+    s->address = qemu_get_be32(f);
+    s->length = qemu_get_be32(f);
+
+    return 0;
+}
+
+static void syborg_snapshot_create(QEMUDevice *dev)
+{
+    syborg_snapshot_state *s;
+    s = (syborg_snapshot_state *)qemu_mallocz(sizeof(syborg_snapshot_state));
+    s->qdev = dev;
+    qdev_set_opaque(dev, s);
+}
+
+void syborg_snapshot_register(void)
+{
+    QEMUDeviceClass *dc;
+    dc = qdev_new("syborg,snapshot", syborg_snapshot_create, 0);
+    qdev_add_registers(dc, syborg_snapshot_readfn, syborg_snapshot_writefn,
+                       0x1000);
+    qdev_add_savevm(dc, 1, syborg_snapshot_save, syborg_snapshot_load);
+}