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src/hotspot/cpu/aarch64/vm_version_aarch64.hpp
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rev 60630 : 8248659: AArch64: Extend CPU Feature detection
Reviewed-by:
Contributed-by: mbeckwit, luhenry, burban
*** 27,36 ****
--- 27,37 ----
#define CPU_AARCH64_VM_VERSION_AARCH64_HPP
#include "runtime/abstract_vm_version.hpp"
#include "runtime/globals_extension.hpp"
#include "utilities/sizes.hpp"
+ #include "runtime/java.hpp"
class VM_Version : public Abstract_VM_Version {
friend class JVMCIVMStructs;
protected:
*** 41,51 ****
--- 42,57 ----
static int _revision;
static int _stepping;
static bool _dcpop;
struct PsrInfo {
uint32_t dczid_el0;
+ #ifndef _WIN64
+ // On Windows-aarch64, this register is not accessible. We then need to
+ // access the cache line size in a different way. Instead, we get the cache
+ // line size in os::win32::get_cacheline_size.
uint32_t ctr_el0;
+ #endif
};
static PsrInfo _psr_info;
static void get_processor_features();
public:
*** 94,115 ****
--- 100,125 ----
CPU_PMULL = (1<<4),
CPU_SHA1 = (1<<5),
CPU_SHA2 = (1<<6),
CPU_CRC32 = (1<<7),
CPU_LSE = (1<<8),
+ CPU_SHA512 = (1 << 21),
CPU_STXR_PREFETCH= (1 << 29),
CPU_A53MAC = (1 << 30),
};
static int cpu_family() { return _cpu; }
static int cpu_model() { return _model; }
static int cpu_model2() { return _model2; }
static int cpu_variant() { return _variant; }
static int cpu_revision() { return _revision; }
static bool supports_dcpop() { return _dcpop; }
+
static ByteSize dczid_el0_offset() { return byte_offset_of(PsrInfo, dczid_el0); }
+ #ifndef _WIN64
static ByteSize ctr_el0_offset() { return byte_offset_of(PsrInfo, ctr_el0); }
+ #endif
static bool is_zva_enabled() {
// Check the DZP bit (bit 4) of dczid_el0 is zero
// and block size (bit 0~3) is not zero.
return ((_psr_info.dczid_el0 & 0x10) == 0 &&
(_psr_info.dczid_el0 & 0xf) != 0);
*** 117,130 ****
--- 127,148 ----
static int zva_length() {
assert(is_zva_enabled(), "ZVA not available");
return 4 << (_psr_info.dczid_el0 & 0xf);
}
static int icache_line_size() {
+ #ifndef _WIN64
return (1 << (_psr_info.ctr_el0 & 0x0f)) * 4;
+ #else
+ return os::win32::get_cacheline_size();
+ #endif
}
static int dcache_line_size() {
+ #ifndef _WIN64
return (1 << ((_psr_info.ctr_el0 >> 16) & 0x0f)) * 4;
+ #else
+ return os::win32::get_cacheline_size();
+ #endif
}
static bool supports_fast_class_init_checks() { return true; }
};
#endif // CPU_AARCH64_VM_VERSION_AARCH64_HPP
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