1 |
/* |
2 |
* Cisco router simulation platform. |
3 |
* Copyright (c) 2006 Christophe Fillot. All rights reserved. |
4 |
* |
5 |
* RAM emulation. |
6 |
*/ |
7 |
|
8 |
#include <stdio.h> |
9 |
#include <stdlib.h> |
10 |
#include <string.h> |
11 |
#include <time.h> |
12 |
#include <errno.h> |
13 |
#include <unistd.h> |
14 |
|
15 |
#include "cpu.h" |
16 |
#include "vm.h" |
17 |
#include "dynamips.h" |
18 |
#include "memory.h" |
19 |
#include "device.h" |
20 |
|
21 |
/* RAM private data */ |
22 |
struct ram_data { |
23 |
vm_obj_t vm_obj; |
24 |
struct vdevice *dev; |
25 |
char *filename; |
26 |
int delete_file; |
27 |
}; |
28 |
|
29 |
/* Shutdown a RAM device */ |
30 |
void dev_ram_shutdown(vm_instance_t *vm,struct ram_data *d) |
31 |
{ |
32 |
if (d != NULL) { |
33 |
/* Remove the device */ |
34 |
dev_remove(vm,d->dev); |
35 |
free(d->dev); |
36 |
|
37 |
/* Remove filename used to virtualize RAM */ |
38 |
if (d->filename && d->delete_file) { |
39 |
unlink(d->filename); |
40 |
free(d->filename); |
41 |
} |
42 |
|
43 |
/* Free the structure itself */ |
44 |
free(d); |
45 |
} |
46 |
} |
47 |
|
48 |
/* Initialize a RAM zone */ |
49 |
int dev_ram_init(vm_instance_t *vm,char *name,int use_mmap,int delete_file, |
50 |
char *alternate_name,int sparse, |
51 |
m_uint64_t paddr,m_uint32_t len) |
52 |
{ |
53 |
struct ram_data *d; |
54 |
|
55 |
/* allocate the private data structure */ |
56 |
if (!(d = malloc(sizeof(*d)))) { |
57 |
fprintf(stderr,"RAM: unable to create device.\n"); |
58 |
return(-1); |
59 |
} |
60 |
|
61 |
memset(d,0,sizeof(*d)); |
62 |
d->delete_file = delete_file; |
63 |
|
64 |
vm_object_init(&d->vm_obj); |
65 |
d->vm_obj.name = name; |
66 |
d->vm_obj.data = d; |
67 |
d->vm_obj.shutdown = (vm_shutdown_t)dev_ram_shutdown; |
68 |
|
69 |
if (use_mmap) { |
70 |
if (!alternate_name) |
71 |
d->filename = vm_build_filename(vm,name); |
72 |
else |
73 |
d->filename = strdup(alternate_name); |
74 |
|
75 |
if (!d->filename) { |
76 |
fprintf(stderr,"RAM: unable to create filename.\n"); |
77 |
goto err_filename; |
78 |
} |
79 |
} |
80 |
|
81 |
if (!(d->dev = dev_create_ram(vm,name,sparse,d->filename,paddr,len))) { |
82 |
fprintf(stderr,"RAM: unable to create device.\n"); |
83 |
goto err_dev_create; |
84 |
} |
85 |
|
86 |
vm_object_add(vm,&d->vm_obj); |
87 |
return(0); |
88 |
|
89 |
err_dev_create: |
90 |
free(d->filename); |
91 |
err_filename: |
92 |
free(d); |
93 |
return(-1); |
94 |
} |
95 |
|
96 |
/* Initialize a ghosted RAM zone */ |
97 |
int dev_ram_ghost_init(vm_instance_t *vm,char *name,int sparse,char *filename, |
98 |
m_uint64_t paddr,m_uint32_t len) |
99 |
{ |
100 |
struct ram_data *d; |
101 |
|
102 |
/* allocate the private data structure */ |
103 |
if (!filename || !(d = malloc(sizeof(*d)))) { |
104 |
fprintf(stderr,"RAM_ghost: unable to create device.\n"); |
105 |
return(-1); |
106 |
} |
107 |
|
108 |
memset(d,0,sizeof(*d)); |
109 |
d->delete_file = FALSE; |
110 |
|
111 |
if (!(d->filename = strdup(filename))) |
112 |
goto err_filename; |
113 |
|
114 |
vm_object_init(&d->vm_obj); |
115 |
d->vm_obj.name = name; |
116 |
d->vm_obj.data = d; |
117 |
d->vm_obj.shutdown = (vm_shutdown_t)dev_ram_shutdown; |
118 |
|
119 |
if (!(d->dev = dev_create_ghost_ram(vm,name,sparse,d->filename, |
120 |
paddr,len))) |
121 |
{ |
122 |
fprintf(stderr,"RAM_ghost: unable to create device.\n"); |
123 |
goto err_dev_create; |
124 |
} |
125 |
|
126 |
vm_object_add(vm,&d->vm_obj); |
127 |
return(0); |
128 |
|
129 |
err_dev_create: |
130 |
free(d->filename); |
131 |
err_filename: |
132 |
free(d); |
133 |
return(-1); |
134 |
} |