42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
|
#endif
#ifdef __HAIKU__
# include <FindDirectory.h>
#endif
#ifdef __QNX__
# include <sys/syspage.h>
#endif
#ifdef OF_PPC_ASM
# include <setjmp.h>
#endif
#if defined(OF_X86_64_ASM) || defined(OF_X86_ASM)
struct x86_regs {
uint32_t eax, ebx, ecx, edx;
};
#endif
static size_t pageSize;
static size_t numberOfCPUs;
#ifdef OF_PPC_ASM
static sig_atomic_t altiVecSupported;
static sigjmp_buf altiVecJumpBuffer;
#endif
#if defined(OF_X86_64_ASM)
static OF_INLINE struct x86_regs OF_CONST_FUNC
x86_cpuid(uint32_t eax, uint32_t ecx)
{
struct x86_regs regs;
|
|
>
|
>
>
|
>
>
|
|
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
|
#endif
#ifdef __HAIKU__
# include <FindDirectory.h>
#endif
#ifdef __QNX__
# include <sys/syspage.h>
#endif
#if defined(OF_PPC_ASM) || defined(OF_MIPS_ASM)
# include <setjmp.h>
# include <signal.h>
#endif
#if defined(OF_X86_64_ASM) || defined(OF_X86_ASM)
struct x86_regs {
uint32_t eax, ebx, ecx, edx;
};
#endif
static size_t pageSize;
static size_t numberOfCPUs;
#if defined(OF_PPC_ASM)
static sig_atomic_t supportsAltiVec = 0;
#elif defined(OF_MIPS_ASM)
static sig_atomic_t supportsMXU = 0;
#endif
#if defined(OF_PPC_ASM) || defined(OF_MIPS_ASM)
static sigjmp_buf SIGILLJumpBuffer;
#endif
#if defined(OF_X86_64_ASM)
static OF_INLINE struct x86_regs OF_CONST_FUNC
x86_cpuid(uint32_t eax, uint32_t ecx)
{
struct x86_regs regs;
|
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
|
: "a"(eax), "c"(ecx)
);
return regs;
}
#endif
#ifdef OF_PPC_ASM
static void
altiVecSIGILLHandler(int signal)
altiVecSupported = 0;
siglongjmp(altiVecJumpBuffer, 1);
#ifdef OF_PPC_ASM
+ (void)load
{
altiVecSupported = 1;
if (sigsetjmp(altiVecJumpBuffer, 1) == 0) {
signal(SIGILL, altiVecSIGILLHandler);
|
|
|
<
|
|
<
|
|
>
>
>
>
>
>
>
>
>
>
>
>
>
|
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
|
: "a"(eax), "c"(ecx)
);
return regs;
}
#endif
#if defined(OF_PPC_ASM) || defined(OF_MIPS_ASM)
static void
SIGILLHandler(int signal)
{
siglongjmp(SIGILLJumpBuffer, 1);
}
#endif
@implementation OFSystemInfo
#if defined(OF_PPC_ASM) || defined(OF_MIPS_ASM)
+ (void)load
{
if (sigsetjmp(SIGILLJumpBuffer, 1) == 0) {
signal(SIGILL, SIGILLHandler);
# if defined(OF_PPC_ASM)
__asm__ __volatile__ (
"vor v0, v0, v0"
);
supportsAltiVec = 1;
# elif defined(OF_MIPS_ASM)
/* This also enables the MXU */
__asm__ __volatile__ (
"li $t0, 1\n\t"
".word 0x7008042f /* s32i2m xr16, $t0 */"
:
:
: "$8" /* $t0 */
);
supportsMXU = 1;
# endif
}
signal(SIGILL, SIG_DFL);
}
#endif
+ (void)initialize
{
|
401
402
403
404
405
406
407
408
409
410
411
|
return x86_cpuid(0, 0).eax >= 7 && (x86_cpuid(7, 0).ebx & (1 << 5));
}
#endif
#ifdef OF_PPC_ASM
+ (bool)supportsAltiVec
{
return altiVecSupported;
|
>
>
>
|
>
>
>
>
|
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
|
return x86_cpuid(0, 0).eax >= 7 && (x86_cpuid(7, 0).ebx & (1 << 5));
}
#endif
#ifdef OF_PPC_ASM
+ (bool)supportsAltiVec
{
return supportsAltiVec;
}
#endif
#ifdef OF_MIPS_ASM
+ (bool)supportsMXU
{
return supportsMXU;
}
#endif
@end
|