Differences From Artifact [016d812c99]:
- File src/OFSystemInfo.m — part of check-in [1ba08eebc5] at 2015-10-19 22:15:13 on branch trunk — Add platform.h & make platform defines consistent (user: js, size: 8569) [annotate] [blame] [check-ins using]
To Artifact [db62f84bfb]:
- File
src/OFSystemInfo.m
— part of check-in
[952af5f0aa]
at
2015-10-24 20:53:32
on branch trunk
— OFSystemInfo.h: Use OF_X86 rather than OF_X86_ASM
The availability of the interface should not depend on whether inline
assembly is available or not, but rather on the CPU architecture.In case no inline assembly is available, false is returned for
everything. (user: js, size: 8517) [annotate] [blame] [check-ins using]
| ︙ | ︙ | |||
43 44 45 46 47 48 49 | #ifdef OF_HAIKU # include <FindDirectory.h> #endif #ifdef OF_QNX # include <sys/syspage.h> #endif | | | > < < < | < < < < < > > > | 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 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 |
#ifdef OF_HAIKU
# include <FindDirectory.h>
#endif
#ifdef OF_QNX
# include <sys/syspage.h>
#endif
#if defined(OF_X86_64) || defined(OF_X86)
struct x86_regs {
uint32_t eax, ebx, ecx, edx;
};
#endif
static size_t pageSize;
static size_t numberOfCPUs;
#if defined(OF_X86_64) || defined(OF_X86)
static OF_INLINE struct x86_regs OF_CONST_FUNC
x86_cpuid(uint32_t eax, uint32_t ecx)
{
struct x86_regs regs;
# if defined(OF_X86_64_ASM)
__asm__(
"cpuid"
: "=a"(regs.eax), "=b"(regs.ebx), "=c"(regs.ecx), "=d"(regs.edx)
: "a"(eax), "c"(ecx)
);
# elif deifned(OF_X86_ASM)
/*
* This workaround is required by GCC when using -fPIC, as ebx is a
* special register in PIC code. Yes, GCC is indeed not able to just
* push a register onto the stack before the __asm__ block and to pop
* it afterwards.
*/
__asm__(
"pushl %%ebx\n\t"
"cpuid\n\t"
"movl %%ebx, %1\n\t"
"popl %%ebx"
: "=a"(regs.eax), "=r"(regs.ebx), "=c"(regs.ecx), "=d"(regs.edx)
: "a"(eax), "c"(ecx)
);
# else
memset(®s, 0, sizeof(regs));
# endif
return regs;
}
#endif
@implementation OFSystemInfo
+ (void)initialize
|
| ︙ | ︙ | |||
321 322 323 324 325 326 327 | encoding: OF_STRING_ENCODING_ASCII length: 12]; #else return nil; #endif } | | | 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 |
encoding: OF_STRING_ENCODING_ASCII
length: 12];
#else
return nil;
#endif
}
#if defined(OF_X86_64) || defined(OF_X86)
+ (bool)supportsMMX
{
return (x86_cpuid(1, 0).edx & (1 << 23));
}
+ (bool)supportsSSE
{
|
| ︙ | ︙ |