/[dynamips]/upstream/dynamips-0.2.6-RC3/dev_ram.c
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Contents of /upstream/dynamips-0.2.6-RC3/dev_ram.c

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Revision 4 - (show annotations)
Sat Oct 6 16:06:49 2007 UTC (12 years, 1 month ago) by dpavlin
File MIME type: text/plain
File size: 2918 byte(s)
dynamips-0.2.6-RC3

1 /*
2 * Cisco C7200 (Predator) RAM emulation
3 * Copyright (c) 2006 Christophe Fillot. All rights reserved.
4 */
5
6 #include <stdio.h>
7 #include <stdlib.h>
8 #include <string.h>
9 #include <time.h>
10 #include <errno.h>
11 #include <unistd.h>
12
13 #include "mips64.h"
14 #include "dynamips.h"
15 #include "memory.h"
16 #include "device.h"
17
18 /* RAM private data */
19 struct ram_data {
20 vm_obj_t vm_obj;
21 struct vdevice *dev;
22 char *filename;
23 int delete_file;
24 };
25
26 /* Shutdown a RAM device */
27 void dev_ram_shutdown(vm_instance_t *vm,struct ram_data *d)
28 {
29 if (d != NULL) {
30 /* Remove the device */
31 dev_remove(vm,d->dev);
32 free(d->dev);
33
34 /* Remove filename used to virtualize RAM */
35 if (d->filename && d->delete_file) {
36 unlink(d->filename);
37 free(d->filename);
38 }
39
40 /* Free the structure itself */
41 free(d);
42 }
43 }
44
45 /* Initialize a RAM zone */
46 int dev_ram_init(vm_instance_t *vm,char *name,int use_mmap,int delete_file,
47 char *alternate_name,m_uint64_t paddr,m_uint32_t len)
48 {
49 struct ram_data *d;
50
51 /* allocate the private data structure */
52 if (!(d = malloc(sizeof(*d)))) {
53 fprintf(stderr,"RAM: unable to create device.\n");
54 return(-1);
55 }
56
57 memset(d,0,sizeof(*d));
58 d->delete_file = delete_file;
59
60 vm_object_init(&d->vm_obj);
61 d->vm_obj.name = name;
62 d->vm_obj.data = d;
63 d->vm_obj.shutdown = (vm_shutdown_t)dev_ram_shutdown;
64
65 if (use_mmap) {
66 if (!alternate_name)
67 d->filename = vm_build_filename(vm,name);
68 else
69 d->filename = strdup(alternate_name);
70
71 if (!d->filename) {
72 fprintf(stderr,"RAM: unable to create filename.\n");
73 goto err_filename;
74 }
75 }
76
77 if (!(d->dev = dev_create_ram(vm,name,d->filename,paddr,len))) {
78 fprintf(stderr,"RAM: unable to create device.\n");
79 goto err_dev_create;
80 }
81
82 vm_object_add(vm,&d->vm_obj);
83 return(0);
84
85 err_dev_create:
86 free(d->filename);
87 err_filename:
88 free(d);
89 return(-1);
90 }
91
92 /* Initialize a ghosted RAM zone */
93 int dev_ram_ghost_init(vm_instance_t *vm,char *name,char *filename,
94 m_uint64_t paddr,m_uint32_t len)
95 {
96 struct ram_data *d;
97
98 /* allocate the private data structure */
99 if (!filename || !(d = malloc(sizeof(*d)))) {
100 fprintf(stderr,"RAM_ghost: unable to create device.\n");
101 return(-1);
102 }
103
104 memset(d,0,sizeof(*d));
105 d->delete_file = FALSE;
106
107 if (!(d->filename = strdup(filename)))
108 goto err_filename;
109
110 vm_object_init(&d->vm_obj);
111 d->vm_obj.name = name;
112 d->vm_obj.data = d;
113 d->vm_obj.shutdown = (vm_shutdown_t)dev_ram_shutdown;
114
115 if (!(d->dev = dev_create_ghost_ram(vm,name,d->filename,paddr,len))) {
116 fprintf(stderr,"RAM_ghost: unable to create device.\n");
117 goto err_dev_create;
118 }
119
120 vm_object_add(vm,&d->vm_obj);
121 return(0);
122
123 err_dev_create:
124 free(d->filename);
125 err_filename:
126 free(d);
127 return(-1);
128 }

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