[JDK-8350672] Adapt JDK-8345125: Aarch64: Add aarch64 backend for Float16 scalar operations

PullRequest: graal/20169

Author: mur47x111

common.json

@@ -8,7 +8,7 @@
 
   "COMMENT.jdks": "When adding or removing JDKs keep in sync with JDKs in ci/common.jsonnet",
   "jdks": {
-    "galahad-jdk":        {"name": "jpg-jdk",   "version": "25",      "build_id": "jdk-25+21-2453", "platformspecific": true, "extrabundles": ["static-libs"]},
+    "galahad-jdk":        {"name": "jpg-jdk",   "version": "25",      "build_id": "jdk-25+21-2454", "platformspecific": true, "extrabundles": ["static-libs"]},
 
     "oraclejdk17":        {"name": "jpg-jdk",   "version": "17.0.7",  "build_id": "jdk-17.0.7+8", "platformspecific": true, "extrabundles": ["static-libs"]},
     "labsjdk-ce-17":      {"name": "labsjdk",   "version": "ce-17.0.7+4-jvmci-23.1-b02", "platformspecific": true },

substratevm/src/com.oracle.svm.core/src/com/oracle/svm/core/aarch64/AArch64LibCHelper.java

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2019, 2020, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2019, 2025, Oracle and/or its affiliates. All rights reserved.
  * Copyright (c) 2019, 2020, Arm Limited. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
@@ -131,6 +131,14 @@ public interface CPUFeatures extends PointerBase {
         @AllowNarrowingCast
         @CField
         boolean fSVEBITPERM();
+
+        @AllowNarrowingCast
+        @CField
+        boolean fFPHP();
+
+        @AllowNarrowingCast
+        @CField
+        boolean fASIMDHP();
     }
     // Checkstyle: resume
 }

substratevm/src/com.oracle.svm.native.libchelper/include/aarch64cpufeatures.h

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2019, 2020, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2019, 2025, Oracle and/or its affiliates. All rights reserved.
  * Copyright (c) 2019, 2020, Arm Limited. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
@@ -46,4 +46,6 @@ typedef struct {
   uint8_t fDMB_ATOMICS;
   uint8_t fPACA;
   uint8_t fSVEBITPERM;
+  uint8_t fFPHP;
+  uint8_t fASIMDHP;
 } CPUFeatures;

substratevm/src/com.oracle.svm.native.libchelper/src/cpuid.c

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2014, 2024, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2014, 2025, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -718,6 +718,12 @@ void determineCPUFeatures(CPUFeatures* features) {
 #ifndef HWCAP_PACA
 #define HWCAP_PACA          (1L << 30)
 #endif
+#ifndef HWCAP_FPHP
+#define HWCAP_FPHP          (1L << 9)
+#endif
+#ifndef HWCAP_ASIMDHP
+#define HWCAP_ASIMDHP       (1L << 10)
+#endif
 #ifndef HWCAP2_SVE2
 #define HWCAP2_SVE2         (1L << 1)
 #endif
@@ -755,6 +761,8 @@ void determineCPUFeatures(CPUFeatures* features) {
   features->fDMB_ATOMICS = 0;
   features->fPACA = !!(auxv & HWCAP_PACA);
   features->fSVEBITPERM = !!(auxv2 & HWCAP2_SVEBITPERM);
+  features->fFPHP = !!(auxv & HWCAP_FPHP);
+  features->fASIMDHP = !!(auxv & HWCAP_ASIMDHP);
 
   //checking for features signaled in another way