diff options
| -rw-r--r-- | Zend/zend_cpuinfo.c | 14 |
1 files changed, 10 insertions, 4 deletions
diff --git a/Zend/zend_cpuinfo.c b/Zend/zend_cpuinfo.c index 1b268931ed..529ab529a3 100644 --- a/Zend/zend_cpuinfo.c +++ b/Zend/zend_cpuinfo.c @@ -73,20 +73,21 @@ static void __zend_cpuid(uint32_t func, uint32_t subfunc, zend_cpu_info *cpuinfo } #endif +#if defined(__i386__) || defined(__x86_64__) /* Function based on compiler-rt implementation. */ static unsigned get_xcr0_eax() { -#if defined(__GNUC__) || defined(__clang__) +# if defined(__GNUC__) || defined(__clang__) // Check xgetbv; this uses a .byte sequence instead of the instruction // directly because older assemblers do not include support for xgetbv and // there is no easy way to conditionally compile based on the assembler used. unsigned eax, edx; __asm__(".byte 0x0f, 0x01, 0xd0" : "=a"(eax), "=d"(edx) : "c"(0)); return eax; -#elif defined(ZEND_WIN32) && defined(_XCR_XFEATURE_ENABLED_MASK) +# elif defined(ZEND_WIN32) && defined(_XCR_XFEATURE_ENABLED_MASK) return _xgetbv(_XCR_XFEATURE_ENABLED_MASK); -#else +# else return 0; -#endif +# endif } static zend_bool is_avx_supported() { @@ -104,6 +105,11 @@ static zend_bool is_avx_supported() { } return 1; } +#else +static zend_bool is_avx_supported() { + return 0; +} +#endif void zend_cpu_startup(void) { |