/[dynamips]/upstream/dynamips-0.2.5/dev_zero.c
This is repository of my old source code which isn't updated any more. Go to git.rot13.org for current projects!
ViewVC logotype

Contents of /upstream/dynamips-0.2.5/dev_zero.c

Parent Directory Parent Directory | Revision Log Revision Log


Revision 1 - (show annotations)
Sat Oct 6 16:01:44 2007 UTC (12 years, 1 month ago) by dpavlin
File MIME type: text/plain
File size: 1550 byte(s)
import 0.2.5 from upstream

1 /*
2 * Cisco C7200 (Predator) Simulation Platform.
3 * Copyright (C) 2005,2006 Christophe Fillot. All rights reserved.
4 *
5 * Zeroed memory zone.
6 */
7
8 #include <stdio.h>
9 #include <stdlib.h>
10 #include <string.h>
11 #include <unistd.h>
12 #include <pthread.h>
13 #include <errno.h>
14
15 #include "mips64.h"
16 #include "dynamips.h"
17 #include "memory.h"
18 #include "device.h"
19
20 /* Zero zone private data */
21 struct zero_data {
22 vm_obj_t vm_obj;
23 struct vdevice dev;
24 };
25
26 /*
27 * dev_zero_access()
28 */
29 void *dev_zero_access(cpu_mips_t *cpu,struct vdevice *dev,
30 m_uint32_t offset,u_int op_size,u_int op_type,
31 m_uint64_t *data)
32 {
33 if (op_type == MTS_READ)
34 *data = 0;
35
36 return NULL;
37 }
38
39 /* Shutdown a zeroed memory zone */
40 void dev_zero_shutdown(vm_instance_t *vm,struct zero_data *d)
41 {
42 if (d != NULL) {
43 dev_remove(vm,&d->dev);
44 free(d);
45 }
46 }
47
48 /* Initialized a zeroed memory zone */
49 int dev_zero_init(vm_instance_t *vm,char *name,m_uint64_t paddr,m_uint32_t len)
50 {
51 struct zero_data *d;
52
53 if (!(d = malloc(sizeof(*d)))) {
54 fprintf(stderr,"ZERO: unable to create device.\n");
55 return(-1);
56 }
57
58 vm_object_init(&d->vm_obj);
59 d->vm_obj.name = name;
60 d->vm_obj.data = d;
61 d->vm_obj.shutdown = (vm_shutdown_t)dev_zero_shutdown;
62
63 dev_init(&d->dev);
64 d->dev.name = name;
65 d->dev.phys_addr = paddr;
66 d->dev.phys_len = len;
67 d->dev.handler = dev_zero_access;
68
69 /* Map this device to the VM */
70 vm_bind_device(vm,&d->dev);
71 vm_object_add(vm,&d->vm_obj);
72 return(0);
73 }

  ViewVC Help
Powered by ViewVC 1.1.26