this repo has no description
Merge pull request #760 from Balint66/master
Adding some basic functionality to sysctl_machdep
authored by
Ariel Abreu
and committed by
GitHub
c68ff619
2321fac6
+206
-3
+206
-3
src/kernel/emulation/linux/misc/sysctl_machdep.c
+206
-3
src/kernel/emulation/linux/misc/sysctl_machdep.c
···
1
1
#include "sysctl_machdep.h"
2
+
#include "simple.h"
2
3
#include <sys/errno.h>
4
+
#include <alloca.h>
5
+
6
+
extern char *strncpy(char *dest, const char *src, __SIZE_TYPE__ n);
3
7
4
8
enum {
5
9
_MACHDEP_CPU = 1000,
6
10
};
7
11
8
12
enum {
9
-
_CPU_BRAND_STRING = 1000,
13
+
_CPU_VENDOR = 1000,
14
+
_CPU_MAX_BASIC,
15
+
_CPU_FAMILY,
16
+
_CPU_MODEL,
17
+
_CPU_STEPPING,
18
+
_CPU_BRAND_STRING,
19
+
_CPU_FEATURES,
10
20
};
11
21
22
+
static sysctl_handler(handle_vendor);
23
+
static sysctl_handler(handle_max_basic);
24
+
static sysctl_handler(handle_family);
25
+
static sysctl_handler(handle_model);
26
+
static sysctl_handler(handle_stepping);
12
27
static sysctl_handler(handle_brand_string);
28
+
static sysctl_handler(handle_features);
13
29
14
30
const struct known_sysctl sysctls_machdep_cpu[] = {
15
-
{ .oid = _CPU_BRAND_STRING, .type = CTLTYPE_STRING, .exttype = "S", .name = "brand_string", .handler = handle_brand_string },
31
+
{ .oid = _CPU_MAX_BASIC, .type = CTLTYPE_INT, .exttype = "I", .name = "max_basic", .handler = handle_max_basic },
32
+
{ .oid = _CPU_VENDOR, .type = CTLTYPE_STRING, .exttype = "S", .name = "vendor", .handler = handle_vendor },
33
+
{ .oid = _CPU_FAMILY, .type = CTLTYPE_INT, .exttype = "I", .name = "family", .handler = handle_family },
34
+
{ .oid = _CPU_MODEL, .type = CTLTYPE_INT, .exttype = "I", .name = "model", .handler = handle_model },
35
+
{ .oid = _CPU_STEPPING, .type = CTLTYPE_INT, .exttype = "I", .name = "stepping", .handler = handle_stepping },
36
+
{ .oid = _CPU_BRAND_STRING, .type = CTLTYPE_STRING, .exttype = "S", .name = "vendor", .handler = handle_brand_string },
37
+
{ .oid = _CPU_FEATURES, .type = CTLTYPE_STRING, .exttype = "S", .name = "features", .handler = handle_features },
16
38
{ .oid = -1 }
17
39
};
18
40
···
28
50
: "0" (level))
29
51
#endif
30
52
31
-
sysctl_handler(handle_brand_string)
53
+
#ifndef setup
54
+
#define setup(value)\
55
+
unsigned int level = 0; \
56
+
unsigned int eax = value; \
57
+
unsigned int ebx; \
58
+
unsigned int edx; \
59
+
unsigned int ecx
60
+
#endif
61
+
62
+
63
+
static inline void copyout_int(int value, char* to_copy, size_t* to_copy_length)
64
+
{
65
+
char tmp[64];
66
+
__simple_sprintf(tmp, "%d", value);
67
+
copyout_string(tmp, to_copy, to_copy_length);
68
+
}
69
+
70
+
71
+
sysctl_handler(handle_vendor)
32
72
{
33
73
unsigned int level = 0;
34
74
unsigned int eax = 0;
···
51
91
return 0;
52
92
}
53
93
94
+
sysctl_handler(handle_max_basic)
95
+
{
96
+
setup(0);
97
+
98
+
99
+
__cpuid(level, eax, ebx, ecx, edx);
100
+
101
+
copyout_int(eax, (char*)old,oldlen);
102
+
103
+
return 0;
104
+
}
105
+
106
+
sysctl_handler(handle_family)
107
+
{
108
+
setup(1);
109
+
110
+
__cpuid(level, eax, ebx, ecx, edx);
111
+
112
+
eax = eax >> 7;
113
+
eax &= 15;
114
+
115
+
copyout_int(eax, old, oldlen);
116
+
117
+
return 0;
118
+
}
119
+
120
+
sysctl_handler(handle_model)
121
+
{
122
+
setup(1);
123
+
124
+
__cpuid(level, eax, ebx, ecx, edx);
125
+
126
+
eax = eax >> 3;
127
+
eax &= 15;
128
+
129
+
copyout_int(eax,(char*)old, oldlen);
130
+
131
+
return 0;
132
+
}
133
+
134
+
sysctl_handler(handle_stepping)
135
+
{
136
+
setup(1);
137
+
138
+
__cpuid(level, eax, ebx, ecx, edx);
139
+
140
+
eax &= 15;
141
+
142
+
copyout_int(eax,(char*)old, oldlen);
143
+
144
+
return 0;
145
+
}
146
+
147
+
sysctl_handler(handle_brand_string)
148
+
{
149
+
setup(0x80000000);
150
+
151
+
__cpuid(level,eax,ebx, ecx, edx);
152
+
153
+
if (eax < 0x80000004) // the information is not implemented
154
+
return 2;
155
+
156
+
157
+
158
+
union
159
+
{
160
+
unsigned int brand[12];
161
+
char name[49];
162
+
} v;
163
+
164
+
for (int i = 1; i < 4; i++)
165
+
{
166
+
eax = 0x80000000+i;
167
+
__cpuid(level, eax, ebx, ecx, edx);
168
+
v.brand[0x0+(i-1)*4] = eax;
169
+
v.brand[0x1+(i-1)*4] = ebx;
170
+
v.brand[0x2+(i-1)*4] = ecx;
171
+
v.brand[0x3+(i-1)*4] = edx;
172
+
}
173
+
174
+
v.name[48] = 0;
175
+
copyout_string(v.name, (char*) old, oldlen);
176
+
177
+
return 0;
178
+
}
179
+
180
+
sysctl_handler(handle_features)
181
+
{
182
+
183
+
setup(1);
184
+
185
+
static const char features[][7] = {"FPU","VME", "DE", "PSE", "TSC", "MSR", "PAE", "MCE", "CX8", "APIC", "","SEP","MTRR","PGE",
186
+
"MCA", "CMOV", "PAT", "PSE-36", "PSN", "CLFSH", "", "DS", "ACPI", "MMX", "FXSR", "SSE", "SSE2", "SS",
187
+
"HTT", "TM","IA64","PBE"};
188
+
189
+
__cpuid(0,eax,ebx,ecx,edx);
190
+
int current_length = 0;
191
+
192
+
if (old != NULL)
193
+
{
194
+
195
+
char *outsr = (char*)old;
196
+
197
+
for (int i = 0; i < 32; i++)
198
+
{
199
+
if (i == 10 || i == 20)
200
+
continue;
201
+
202
+
if ( (edx & (1<<i)) && current_length < *oldlen)
203
+
{
204
+
if (current_length)
205
+
{
206
+
outsr[current_length] = ' ';
207
+
208
+
current_length++;
209
+
}
210
+
if (current_length < *oldlen)
211
+
{
212
+
int len = __simple_strlen(features[i]);
213
+
214
+
strncpy(outsr + current_length, features[i],
215
+
*oldlen - current_length);
216
+
217
+
current_length += len;
218
+
}
219
+
}
220
+
}
221
+
222
+
if (current_length < *oldlen)
223
+
{
224
+
outsr[current_length] = '\0';
225
+
}
226
+
227
+
}
228
+
else
229
+
{
230
+
231
+
for (int i = 0; i < 32; i++)
232
+
{
233
+
234
+
if (i == 10 || i == 20)
235
+
continue;
236
+
237
+
if (edx & (1<<i))
238
+
{
239
+
if (current_length != 0)
240
+
current_length++;
241
+
242
+
current_length += __simple_strlen(features[i]);
243
+
}
244
+
245
+
}
246
+
247
+
if (oldlen)
248
+
*oldlen = current_length;
249
+
250
+
}
251
+
252
+
253
+
254
+
return 0;
255
+
256
+
}