22  */
  23 package jdk.vm.ci.hotspot.aarch64;
  24 
  25 import jdk.vm.ci.hotspot.HotSpotVMConfigAccess;
  26 import jdk.vm.ci.hotspot.HotSpotVMConfigStore;
  27 
  28 /**
  29  * Used to access native configuration details.
  30  *
  31  * All non-static, public fields in this class are so that they can be compiled as constants.
  32  */
  33 class AArch64HotSpotVMConfig extends HotSpotVMConfigAccess {
  34 
  35     AArch64HotSpotVMConfig(HotSpotVMConfigStore config) {
  36         super(config);
  37     }
  38 
  39     final boolean linuxOs = System.getProperty("os.name", "").startsWith("Linux");
  40 
  41     final boolean useCompressedOops = getFlag("UseCompressedOops", Boolean.class);































  42 }

  22  */
  23 package jdk.vm.ci.hotspot.aarch64;
  24 
  25 import jdk.vm.ci.hotspot.HotSpotVMConfigAccess;
  26 import jdk.vm.ci.hotspot.HotSpotVMConfigStore;
  27 
  28 /**
  29  * Used to access native configuration details.
  30  *
  31  * All non-static, public fields in this class are so that they can be compiled as constants.
  32  */
  33 class AArch64HotSpotVMConfig extends HotSpotVMConfigAccess {
  34 
  35     AArch64HotSpotVMConfig(HotSpotVMConfigStore config) {
  36         super(config);
  37     }
  38 
  39     final boolean linuxOs = System.getProperty("os.name", "").startsWith("Linux");
  40 
  41     final boolean useCompressedOops = getFlag("UseCompressedOops", Boolean.class);
  42     
  43     // CPU Capabilities
  44     
  45     /* 
  46      * These flags are set based on the corresponding command line flags.
  47      */
  48     final boolean useBarriersForVolatile = getFlag("UseBarriersForVolatile", Boolean.class);
  49     final boolean useCRC32 = getFlag("UseCRC32", Boolean.class);
  50     final boolean useNeon = getFlag("UseNeon", Boolean.class);
  51     final boolean useSIMDForMemoryOps = getFlag("UseSIMDForMemoryOps", Boolean.class);
  52     final boolean avoidUnalignedAccesses = getFlag("AvoidUnalignedAccesses", Boolean.class);
  53     final boolean useLSE = getFlag("UseLSE", Boolean.class);
  54     final boolean useBlockZeroing = getFlag("UseBlockZeroing", Boolean.class);
  55     
  56     final long vmVersionFeatures = getFieldValue("Abstract_VM_Version::_features", Long.class, "uint64_t");
  57 
  58     /*
  59      * These flags are set if the corresponding support is in the hardware.
  60      */
  61     final long aarch64FP = getConstant("VM_Version::CPU_FP", Long.class);
  62     final long aarch64ASIMD = getConstant("VM_Version::CPU_ASIMD", Long.class);
  63     final long aarch64EVTSTRM = getConstant("VM_Version::CPU_EVTSTRM", Long.class);
  64     final long aarch64AES = getConstant("VM_Version::CPU_AES", Long.class);
  65     final long aarch64PMULL = getConstant("VM_Version::CPU_PMULL", Long.class);
  66     final long aarch64SHA1 = getConstant("VM_Version::CPU_SHA1", Long.class);
  67     final long aarch64SHA2 = getConstant("VM_Version::CPU_SHA2", Long.class);
  68     final long aarch64CRC32 = getConstant("VM_Version::CPU_CRC32", Long.class);
  69     final long aarch64LSE = getConstant("VM_Version::CPU_LSE", Long.class);
  70     final long aarch64STXR_PREFETCH = getConstant("VM_Version::CPU_STXR_PREFETCH", Long.class);
  71     final long aarch64A53MAC = getConstant("VM_Version::CPU_A53MAC", Long.class);
  72     final long aarch64DMB_ATOMICS = getConstant("VM_Version::CPU_DMB_ATOMICS", Long.class);
  73 }