testing/openjdk13: New aport

10 files changed, 1238 insertions, 0 deletions

diff --git a/testing/openjdk13/APKBUILD b/testing/openjdk13/APKBUILD
new file mode 100644
index 00000000000..54b86bd0e7f
--- /dev/null
+++ b/testing/openjdk13/APKBUILD
@@ -0,0 +1,296 @@
+# Contributor: Simon Frankenberger <simon-alpine@fraho.eu>
+# Maintainer: Simon Frankenberger <simon-alpine@fraho.eu>
+pkgname=openjdk13
+pkgver=13.0.2_p8
+_pkgver=${pkgver/_p8/-ga}
+pkgrel=0
+pkgdesc="Oracle OpenJDK 13"
+url="https://hg.openjdk.java.net/jdk-updates/jdk13u"
+arch="all !x86 !armhf !armv7" # oracle dropped support for 32 bit
+license="GPL-2.0-with-classpath-exception"
+makedepends="autoconf
+	bash
+	gawk
+	grep
+	make
+	openjdk12-jdk
+	zip
+	alsa-lib-dev
+	cups-dev
+	elfutils-dev
+	fontconfig-dev
+	freetype-dev
+	giflib-dev
+	lcms2-dev
+	libexecinfo-dev
+	libffi-dev
+	libjpeg-turbo-dev
+	libx11-dev
+	libxext-dev
+	libxrandr-dev
+	libxrender-dev
+	libxt-dev
+	libxtst-dev
+	linux-headers
+	zlib-dev"
+depends="$pkgname-jmods $pkgname-demos $pkgname-doc $pkgname-jdk" # for the virtual openjdk13 package
+subpackages="$pkgname-jmods:_jmods:noarch
+	$pkgname-demos:_demos:noarch
+	$pkgname-doc:_doc:noarch
+	$pkgname-jre:_jre
+	$pkgname-src:_src:noarch
+	$pkgname-jre-headless:_jre_headless
+	$pkgname-jdk:_jdk"
+source="jdk-$_pkgver.tar.gz::https://github.com/openjdk/jdk13u/archive/jdk-$_pkgver.tar.gz
+
+	build.patch
+	aarch64.patch
+	ppc64le.patch
+	make-4.3.patch
+	fix-bootjdk-check.patch
+
+	HelloWorld.java
+	TestECDSA.java
+	TestCryptoLevel.java
+	Alpine_Bug_10126.java
+"
+builddir="$srcdir/jdk13u-jdk-$_pkgver"
+
+_java_home="/usr/lib/jvm/java-13-openjdk"
+
+ldpath="$_java_home/lib:$_java_home/lib/server"
+sonameprefix="$pkgname:"
+
+# enable running the JTReg tests in check?
+# see comment in that function for explanation
+_run_jtreg=${_run_jtreg:-0}
+if [ $_run_jtreg -ne 0 ]; then
+	makedepends="$makedepends java-jtreg"
+	checkdepends="$checkdepends ttf-freefont xvfb-run"
+fi
+
+
+prepare() {
+	default_prepare
+
+	# update autoconf files to detect alpine
+	update_config_sub
+	update_config_guess
+
+	# remove not compilable module (hotspot jdk.hotspot.agent)
+	# this needs libthread_db which is only provided by glibc
+	#
+	# haven't found any way to disable this module so just remove it.
+	rm -r src/jdk.hotspot.agent
+}
+
+build() {
+	if [ $_run_jtreg -ne 0 ]; then
+		_with_jtreg="--with-jtreg=/usr/share/java/jtreg"
+	else
+		_with_jtreg="--with-jtreg=no"
+	fi
+
+	# CFLAGS, CXXFLAGS and LDFLAGS are ignored as shown by a warning
+	# in the output of ./configure unless used like such:
+	#  --with-extra-cflags="$CFLAGS"
+	#  --with-extra-cxxflags="$CXXFLAGS"
+	#  --with-extra-ldflags="$LDFLAGS"
+	# See also paragraph "Configure Control Variables" from "common/doc/building.md"
+	# shellcheck disable=2097 disable=2098
+	CFLAGS='' CXXFLAGS='' LDFLAGS='' \
+		bash ./configure \
+		--build=$CBUILD \
+		--host=$CHOST \
+		--target=$CTARGET \
+		--prefix="$_java_home" \
+		--sysconfdir=/etc \
+		--mandir=/usr/share/man \
+		--infodir=/usr/share/info \
+		--localstatedir=/var \
+		--with-extra-cflags="$CFLAGS" \
+		--with-extra-cxxflags="$CXXFLAGS" \
+		--with-extra-ldflags="$LDFLAGS" \
+		--with-zlib=system \
+		--with-libjpeg=system \
+		--with-giflib=system \
+		--with-libpng=system \
+		--with-lcms=system \
+		--with-jobs=${JOBS:-4} \
+		--with-test-jobs=${JOBS:-4} \
+		--with-native-debug-symbols=none \
+		$_with_jtreg \
+		--disable-warnings-as-errors \
+		--disable-precompiled-headers \
+		--enable-dtrace=no \
+		--with-jvm-variants=server \
+		--with-debug-level=release \
+		--with-version-pre= \
+		--with-version-opt="alpine-r$pkgrel" \
+		--with-version-build=${_pkgver#*+} \
+		--with-vendor-name="Alpine" \
+		--with-vendor-url="https://alpinelinux.org/" \
+		--with-vendor-bug-url="https://gitlab.alpinelinux.org/alpine/aports/issues" \
+		--with-vendor-vm-bug-url="https://gitlab.alpinelinux.org/alpine/aports/issues"
+	MAKEFLAGS='' make jdk-image
+}
+
+check() {
+	local _java_bin="./build/linux-*-server-release/images/jdk/bin"
+
+	# 1) compile and run a simple hello world
+	$_java_bin/javac -d . "$srcdir"/HelloWorld.java
+	$_java_bin/java HelloWorld
+
+	# 2) compile and run a testcase for unlimited policy
+	$_java_bin/javac -d . "$srcdir"/TestCryptoLevel.java
+	$_java_bin/java -cp . --add-opens java.base/javax.crypto=ALL-UNNAMED TestCryptoLevel
+
+	# 3) compile and run a testcase for ECDSA signatures
+	$_java_bin/javac -d . "$srcdir"/TestECDSA.java
+	$_java_bin/java TestECDSA
+
+	# 4) compile and run testcase for bug 10126
+	$_java_bin/javac -d . "$srcdir"/Alpine_Bug_10126.java
+	$_java_bin/java Alpine_Bug_10126
+
+	# run the gtest unittest suites
+	# they don't take long, DO NOT DISABLE THEM!
+	MAKEFLAGS='' make test-hotspot-gtest
+
+	# The jtreg tests take very, very long to finish and show some failures (9 - 12 on my machine, varying between runs)
+	# I think these are not critical and can be safely ignored.
+	# As the tests take too long, they are disabled by default.
+	# When updating this aport please let them run at least once on your machine to see if the failure count changes.
+	if [ $_run_jtreg -ne 0 ]; then
+		_logfile=$( mktemp -p "$builddir" )
+		MAKEFLAGS='' xvfb-run make \
+			run-test-tier1 \
+			run-test-tier2 \
+			run-test-tier3 \
+			| tee "$_logfile"
+		msg "---------------------------------------"
+		msg "The build log can be found at $_logfile"
+		# abort the build so you may take a look at the logfile
+		false
+		return 1
+	fi
+}
+
+package() {
+	mkdir -p "$pkgdir/$_java_home"
+	cp -r build/linux-*-server-release/images/jdk/* "$pkgdir/$_java_home"
+}
+
+_jmods() {
+	pkgdesc="Oracle OpenJDK 13 (jmods)"
+	depends=""
+	_fromroot="$pkgdir/$_java_home"
+	_toroot="$subpkgdir/$_java_home"
+
+	mkdir -p "$_toroot"
+	mv "$_fromroot/jmods" "$_toroot"
+}
+
+_demos() {
+	pkgdesc="Oracle OpenJDK 13 (demos)"
+	depends=""
+	_fromroot="$pkgdir/$_java_home"
+	_toroot="$subpkgdir/$_java_home"
+
+	mkdir -p "$_toroot"
+	mv "$_fromroot/demo" "$_toroot"
+}
+
+_doc() {
+	pkgdesc="Oracle OpenJDK 13 (Documentation)"
+	depends=""
+	_fromroot="$pkgdir/$_java_home"
+	_toroot="$subpkgdir/$_java_home"
+
+	mkdir -p "$_toroot"
+	mv "$_fromroot/man" "$_toroot"
+}
+
+_jre() {
+	pkgdesc="Oracle OpenJDK 13 (JRE)"
+	depends="$pkgname-jre-headless"
+	_fromroot="$pkgdir/$_java_home"
+	_toroot="$subpkgdir/$_java_home"
+
+	mkdir -p "$_toroot/lib"
+	mv "$_fromroot/lib/libawt_xawt.so" \
+		"$_fromroot/lib/libfontmanager.so" \
+		"$_fromroot/lib/libjavajpeg.so" \
+		"$_fromroot/lib/libjawt.so" \
+		"$_fromroot/lib/libjsound.so" \
+		"$_fromroot/lib/liblcms.so" \
+		"$_fromroot/lib/libsplashscreen.so" \
+		"$_toroot/lib"
+}
+
+_src() {
+	pkgdesc="Oracle OpenJDK 13 (sources)"
+	depends="$pkgname-jre-headless"
+	mkdir -p "$subpkgdir/$_java_home"/lib
+	mv "$pkgdir"/$_java_home/lib/src.zip \
+		"$subpkgdir"/$_java_home/lib/
+}
+
+_jre_headless() {
+	pkgdesc="Oracle OpenJDK 13 (JRE headless)"
+	depends="java-common java-cacerts"
+	_fromroot="$pkgdir/$_java_home"
+	_toroot="$subpkgdir/$_java_home"
+
+	mkdir -p "$_toroot"
+	mv "$_fromroot/lib" "$_toroot"
+
+	mkdir -p "$_toroot/bin"
+	for i in java \
+		jjs \
+		keytool \
+		pack200 \
+		rmid \
+		rmiregistry \
+		unpack200; do
+		mv "$_fromroot/bin/$i" "$_toroot/bin/$i"
+	done
+
+	mv "$_fromroot/legal"              "$_toroot"
+	mv "$_fromroot/conf"               "$_toroot"
+	mv "$_fromroot/release"            "$_toroot"
+	cp "$builddir/ASSEMBLY_EXCEPTION"  "$_toroot"
+	cp "$builddir/LICENSE"             "$_toroot"
+	cp "$builddir/README"              "$_toroot"
+
+	# symlink to shared cacerts store
+	rm "$_toroot/lib/security/cacerts"
+	ln -sf /etc/ssl/certs/java/cacerts \
+		"$_toroot/lib/security/cacerts"
+
+	# symlink for java-common to work (expects jre in $_java_home/jre)
+	ln -sf . "$_toroot/jre"
+}
+
+_jdk() {
+	pkgdesc="Oracle OpenJDK 13 (JDK)"
+	depends="$pkgname-jre"
+	_fromroot="$pkgdir/$_java_home"
+	_toroot="$subpkgdir/$_java_home"
+
+	mkdir -p "$_toroot"
+	mv "$_fromroot/bin" "$_toroot"
+	mv "$_fromroot/include" "$_toroot"
+}
+
+sha512sums="430270d31e2370aa779e01190f717e78260a13cd3a90e1cb48d602dc2e1e6fb646fe85edce4eb0e053a29702fdca4d09507554adfcf37a3a91085e8804df3238  jdk-13.0.2-ga.tar.gz
+953fea48fa200b4388867134428220b08aad38396cebff2b2a2d270ac49678e5baf08b19edf58b514750b527c06c5958e7394e7d0d4189950c213bea322048e1  build.patch
+44e26f252a911acc4fa742c352177dbd59f3a9275b76bb4cc61d430232bd95a7279d116204e39c3ebd9b4fea2ff0ba3ba091d640cdd021baa437d0196818d6bb  aarch64.patch
+fabbfd3d1a42d885e0631f6a9a93408dc4c3d1d6dd8099d3783192972d1f61776724d7d2d68f425c1d8eb4e942fa5302325fb8240c0a6049e891a29e8e3b2be7  ppc64le.patch
+b8b420b9e73da54decbec04fab9ac1c79f3c01ef2f9af132cf98a008f9ff6544e67d98c109f8c48f224df9581a8b40399db25099766d9f3f9b11dafe5114c545  make-4.3.patch
+e54c69db6e97c9d7057275f6749565a748f42dadb397b2f3975d99608c4037ad93c84cf828c7e2955b1b4f1899dcc25069c8c6d675f1e963adf3f1223a47d56c  fix-bootjdk-check.patch
+d1767dddd8e0956e25c0f77ed45c6fc86a1191bae1704a6dc33be490fd20eaa50461fe5c2a3349512059d555651e2eb41437dd3c1096c351e8ee68b4534a2579  HelloWorld.java
+27e91edef89d26c0c5b9a813e2045f8d2b348745a506ae37b34b660fa7093da9a4e0e676ea41dc4a5c901bce02e5304d95e90f68d6c99cbf461b2da40a7a9853  TestECDSA.java
+b02dff8d549f88317bb4c741a9e269e8d59eef990197d085388fc49c7423a4eb9367dbe1e02bffb10e7862f5980301eb58d4494e177d0e8f60af6b05c7fbbe60  TestCryptoLevel.java
+fadd06c034614a25537246dfd66a4645c2a4c673f16b5d3e8abdd89c81baf04bd2797b26b0e589ec11ee08b90783b232a6d06c72589d211a5e10b8638a627911  Alpine_Bug_10126.java"
diff --git a/testing/openjdk13/Alpine_Bug_10126.java b/testing/openjdk13/Alpine_Bug_10126.java
new file mode 100644
index 00000000000..76574a15098
--- /dev/null
+++ b/testing/openjdk13/Alpine_Bug_10126.java
@@ -0,0 +1,13 @@
+public class Alpine_Bug_10126 {
+    public static void main(String[] args) throws Exception {
+        try (java.net.Socket sock = javax.net.ssl.SSLSocketFactory.getDefault().createSocket("bugs.alpinelinux.org", 443);
+             java.io.InputStream in = sock.getInputStream();
+             java.io.OutputStream out = sock.getOutputStream()) {
+            out.write("GET / HTTP/1.0\n\nHost: gitlab.alpinelinux.org\n\nConnection: close\n\n\n\n".getBytes());
+            out.flush();
+            while (in.read(new byte[1024]) != -1) ;
+        }
+        System.out.println("Secured connection performed successfully");
+    }
+}
+
diff --git a/testing/openjdk13/HelloWorld.java b/testing/openjdk13/HelloWorld.java
new file mode 100644
index 00000000000..0be813a1901
--- /dev/null
+++ b/testing/openjdk13/HelloWorld.java
@@ -0,0 +1,3 @@
+public class HelloWorld {
+  public static void main(String[] args) { System.out.println("Hello World!"); }
+}
diff --git a/testing/openjdk13/TestCryptoLevel.java b/testing/openjdk13/TestCryptoLevel.java
new file mode 100644
index 00000000000..3ed6c8dc15c
--- /dev/null
+++ b/testing/openjdk13/TestCryptoLevel.java
@@ -0,0 +1,72 @@
+/* TestCryptoLevel -- Ensure unlimited crypto policy is in use.
+   Copyright (C) 2012 Red Hat, Inc.
+
+This program is free software: you can redistribute it and/or modify
+it under the terms of the GNU Affero General Public License as
+published by the Free Software Foundation, either version 3 of the
+License, or (at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU Affero General Public License for more details.
+
+You should have received a copy of the GNU Affero General Public License
+along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+import java.lang.reflect.Field;
+import java.lang.reflect.Method;
+import java.lang.reflect.InvocationTargetException;
+
+import java.security.Permission;
+import java.security.PermissionCollection;
+
+public class TestCryptoLevel
+{
+    public static void main(String[] args)
+            throws NoSuchFieldException, ClassNotFoundException,
+            IllegalAccessException, InvocationTargetException
+    {
+        Class<?> cls = null;
+        Method def = null, exempt = null;
+
+        try
+        {
+            cls = Class.forName("javax.crypto.JceSecurity");
+        }
+        catch (ClassNotFoundException ex)
+        {
+            System.err.println("Running a non-Sun JDK.");
+            System.exit(0);
+        }
+        try
+        {
+            def = cls.getDeclaredMethod("getDefaultPolicy");
+            exempt = cls.getDeclaredMethod("getExemptPolicy");
+        }
+        catch (NoSuchMethodException ex)
+        {
+            System.err.println("Running IcedTea with the original crypto patch.");
+            System.exit(0);
+        }
+        def.setAccessible(true);
+        exempt.setAccessible(true);
+        PermissionCollection defPerms = (PermissionCollection) def.invoke(null);
+        PermissionCollection exemptPerms = (PermissionCollection) exempt.invoke(null);
+        Class<?> apCls = Class.forName("javax.crypto.CryptoAllPermission");
+        Field apField = apCls.getDeclaredField("INSTANCE");
+        apField.setAccessible(true);
+        Permission allPerms = (Permission) apField.get(null);
+        if (defPerms.implies(allPerms) && (exemptPerms == null || exemptPerms.implies(allPerms)))
+        {
+            System.err.println("Running with the unlimited policy.");
+            System.exit(0);
+        }
+        else
+        {
+            System.err.println("WARNING: Running with a restricted crypto policy.");
+            System.exit(-1);
+        }
+    }
+}
diff --git a/testing/openjdk13/TestECDSA.java b/testing/openjdk13/TestECDSA.java
new file mode 100644
index 00000000000..abd81d1cedf
--- /dev/null
+++ b/testing/openjdk13/TestECDSA.java
@@ -0,0 +1,49 @@
+/* TestECDSA -- Ensure ECDSA signatures are working.
+   Copyright (C) 2016 Red Hat, Inc.
+
+This program is free software: you can redistribute it and/or modify
+it under the terms of the GNU Affero General Public License as
+published by the Free Software Foundation, either version 3 of the
+License, or (at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU Affero General Public License for more details.
+
+You should have received a copy of the GNU Affero General Public License
+along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+import java.math.BigInteger;
+import java.security.KeyPair;
+import java.security.KeyPairGenerator;
+import java.security.Signature;
+
+/**
+ * @test
+ */
+public class TestECDSA {
+
+    public static void main(String[] args) throws Exception {
+        KeyPairGenerator keyGen = KeyPairGenerator.getInstance("EC");
+        KeyPair key = keyGen.generateKeyPair();
+
+        byte[] data = "This is a string to sign".getBytes("UTF-8");
+
+        Signature dsa = Signature.getInstance("NONEwithECDSA");
+        dsa.initSign(key.getPrivate());
+        dsa.update(data);
+        byte[] sig = dsa.sign();
+        System.out.println("Signature: " + new BigInteger(1, sig).toString(16));
+
+        Signature dsaCheck = Signature.getInstance("NONEwithECDSA");
+        dsaCheck.initVerify(key.getPublic());
+        dsaCheck.update(data);
+        boolean success = dsaCheck.verify(sig);
+        if (!success) {
+            throw new RuntimeException("Test failed. Signature verification error");
+        }
+        System.out.println("Test passed.");
+    }
+}
diff --git a/testing/openjdk13/aarch64.patch b/testing/openjdk13/aarch64.patch
new file mode 100644
index 00000000000..e6a89114194
--- /dev/null
+++ b/testing/openjdk13/aarch64.patch
@@ -0,0 +1,12 @@
+The header is not present with musl and including is not needed
+
+--- old/src/hotspot/os_cpu/linux_aarch64/os_linux_aarch64.cpp
++++ new/src/hotspot/os_cpu/linux_aarch64/os_linux_aarch64.cpp
+@@ -77,7 +77,6 @@
+ # include <pwd.h>
+ # include <poll.h>
+ # include <ucontext.h>
+-# include <fpu_control.h>
+ 
+ #ifdef BUILTIN_SIM
+ #define REG_SP REG_RSP
diff --git a/testing/openjdk13/build.patch b/testing/openjdk13/build.patch
new file mode 100644
index 00000000000..0f31de9f667
--- /dev/null
+++ b/testing/openjdk13/build.patch
@@ -0,0 +1,520 @@
+This patch contains mainly code from the portola project.
+Adopted, enhanced and fixed so that it actually compiles with alpine.
+
+--- old/make/ReleaseFile.gmk
++++ new/make/ReleaseFile.gmk
+@@ -53,6 +53,7 @@
+   $(call info-file-item, "JAVA_VERSION_DATE", "$(VERSION_DATE)")
+   $(call info-file-item, "OS_NAME", "$(RELEASE_FILE_OS_NAME)")
+   $(call info-file-item, "OS_ARCH", "$(RELEASE_FILE_OS_ARCH)")
++  $(call info-file-item, "LIBC", "musl")
+ endef
+ 
+ # Param 1 - The file containing the MODULES list
+--- old/make/hotspot/lib/CompileJvm.gmk
++++ new/make/hotspot/lib/CompileJvm.gmk
+@@ -71,6 +71,7 @@
+     -DHOTSPOT_BUILD_USER='"$(USERNAME)"' \
+     -DHOTSPOT_VM_DISTRO='"$(HOTSPOT_VM_DISTRO)"' \
+     -DCPU='"$(OPENJDK_TARGET_CPU_VM_VERSION)"' \
++    -DLIBC='"musl"' \
+     #
+ 
+ ################################################################################
+--- old/make/lib/CoreLibraries.gmk
++++ new/make/lib/CoreLibraries.gmk
+@@ -192,6 +192,7 @@
+ endif
+ 
+ LIBJLI_CFLAGS += $(LIBZ_CFLAGS)
++LIBJLI_CFLAGS += -DLIBC=\"musl\"
+ 
+ ifneq ($(USE_EXTERNAL_LIBZ), true)
+   LIBJLI_EXTRA_FILES += \
+--- old/src/hotspot/os/linux/os_linux.cpp
++++ new/src/hotspot/os/linux/os_linux.cpp
+@@ -102,7 +102,6 @@
+ # include <string.h>
+ # include <syscall.h>
+ # include <sys/sysinfo.h>
+-# include <gnu/libc-version.h>
+ # include <sys/ipc.h>
+ # include <sys/shm.h>
+ # include <link.h>
+@@ -599,6 +598,11 @@
+ // detecting pthread library
+ 
+ void os::Linux::libpthread_init() {
++#if !defined(__GLIBC__) && !defined(__UCLIBC__)
++  // Hard code Alpine Linux supported musl compatible settings
++  os::Linux::set_glibc_version("glibc 2.9");
++  os::Linux::set_libpthread_version("NPTL");
++#else
+   // Save glibc and pthread version strings.
+ #if !defined(_CS_GNU_LIBC_VERSION) || \
+     !defined(_CS_GNU_LIBPTHREAD_VERSION)
+@@ -616,6 +620,7 @@
+   str = (char *)malloc(n, mtInternal);
+   confstr(_CS_GNU_LIBPTHREAD_VERSION, str, n);
+   os::Linux::set_libpthread_version(str);
++#endif
+ }
+ 
+ /////////////////////////////////////////////////////////////////////////////
+@@ -3001,20 +3006,36 @@
+ extern "C" JNIEXPORT void numa_warn(int number, char *where, ...) { }
+ extern "C" JNIEXPORT void numa_error(char *where) { }
+ 
++static void* dlvsym_if_available(void* handle, const char* name, const char* version) {
++  typedef void* (*dlvsym_func_type)(void* handle, const char* name, const char* version);
++  static dlvsym_func_type dlvsym_func;
++  static bool initialized = false;
++
++  if (!initialized) {
++    dlvsym_func = (dlvsym_func_type)dlsym(RTLD_NEXT, "dlvsym");
++    initialized = true;
++  }
++
++  if (dlvsym_func != NULL) {
++    void *f = dlvsym_func(handle, name, version);
++    if (f != NULL) {
++      return f;
++    }
++  }
++
++  return dlsym(handle, name);
++}
++
+ // Handle request to load libnuma symbol version 1.1 (API v1). If it fails
+ // load symbol from base version instead.
+ void* os::Linux::libnuma_dlsym(void* handle, const char *name) {
+-  void *f = dlvsym(handle, name, "libnuma_1.1");
+-  if (f == NULL) {
+-    f = dlsym(handle, name);
+-  }
+-  return f;
++  return dlvsym_if_available(handle, name, "libnuma_1.1");
+ }
+ 
+ // Handle request to load libnuma symbol version 1.2 (API v2) only.
+ // Return NULL if the symbol is not defined in this particular version.
+ void* os::Linux::libnuma_v2_dlsym(void* handle, const char* name) {
+-  return dlvsym(handle, name, "libnuma_1.2");
++  return dlvsym_if_available(handle, name, "libnuma_1.2");
+ }
+ 
+ bool os::Linux::libnuma_init() {
+--- old/src/hotspot/os_cpu/linux_x86/os_linux_x86.cpp
++++ new/src/hotspot/os_cpu/linux_x86/os_linux_x86.cpp
+@@ -75,9 +75,6 @@
+ # include <pwd.h>
+ # include <poll.h>
+ # include <ucontext.h>
+-#ifndef AMD64
+-# include <fpu_control.h>
+-#endif
+ 
+ #ifdef AMD64
+ #define REG_SP REG_RSP
+--- old/src/hotspot/share/gc/shared/genCollectedHeap.cpp
++++ new/src/hotspot/share/gc/shared/genCollectedHeap.cpp
+@@ -1153,7 +1153,7 @@
+ static ScratchBlock *removeSmallestScratch(ScratchBlock **prev_ptr) {
+   bool first = true;
+   size_t min_size = 0;   // "first" makes this conceptually infinite.
+-  ScratchBlock **smallest_ptr, *smallest;
++  ScratchBlock **smallest_ptr = NULL, *smallest;
+   ScratchBlock  *cur = *prev_ptr;
+   while (cur) {
+     assert(*prev_ptr == cur, "just checking");
+--- old/src/hotspot/share/runtime/vm_version.cpp
++++ new/src/hotspot/share/runtime/vm_version.cpp
+@@ -267,7 +267,7 @@
+   #endif
+ 
+   #define INTERNAL_VERSION_SUFFIX VM_RELEASE ")" \
+-         " for " OS "-" CPU FLOAT_ARCH_STR \
++         " for " OS "-" CPU FLOAT_ARCH_STR LIBC \
+          " JRE (" VERSION_STRING "), built on " __DATE__ " " __TIME__ \
+          " by " XSTR(HOTSPOT_BUILD_USER) " with " HOTSPOT_BUILD_COMPILER
+ 
+--- old/src/hotspot/share/utilities/globalDefinitions_gcc.hpp
++++ new/src/hotspot/share/utilities/globalDefinitions_gcc.hpp
+@@ -204,7 +204,7 @@
+ #elif defined(__APPLE__)
+ inline int g_isnan(double f) { return isnan(f); }
+ #elif defined(LINUX) || defined(_ALLBSD_SOURCE)
+-inline int g_isnan(float  f) { return isnanf(f); }
++inline int g_isnan(float  f) { return isnan(f); }
+ inline int g_isnan(double f) { return isnan(f); }
+ #else
+ #error "missing platform-specific definition here"
+--- old/src/java.base/linux/native/libnet/linux_close.c
++++ new/src/java.base/linux/native/libnet/linux_close.c
+@@ -60,7 +60,7 @@
+ /*
+  * Signal to unblock thread
+  */
+-static int sigWakeup = (__SIGRTMAX - 2);
++static int sigWakeup;
+ 
+ /*
+  * fdTable holds one entry per file descriptor, up to a certain
+@@ -149,6 +149,7 @@
+     /*
+      * Setup the signal handler
+      */
++    sigWakeup = SIGRTMAX - 2;
+     sa.sa_handler = sig_wakeup;
+     sa.sa_flags   = 0;
+     sigemptyset(&sa.sa_mask);
+--- old/src/java.base/unix/native/libjava/childproc.c
++++ new/src/java.base/unix/native/libjava/childproc.c
+@@ -234,7 +234,13 @@
+ {
+     if (envp == NULL || (char **) envp == environ) {
+         execvp(file, (char **) argv);
+-        return;
++        // ENOEXEC indicates that the file header was not recognized. The musl C
++        // library does not implement the fallback to /bin/sh for that case, so fall
++        // through to the code below which implements that fallback using
++        // execve_with_shell_fallback.
++        if (errno != ENOEXEC) {
++            return;
++        }
+     }
+ 
+     if (*file == '\0') {
+--- old/src/java.base/unix/native/libjava/jdk_util_md.h
++++ new/src/java.base/unix/native/libjava/jdk_util_md.h
+@@ -37,7 +37,7 @@
+ #define ISNAND(d) isnan(d)
+ #elif defined(__linux__) || defined(_ALLBSD_SOURCE)
+ #include <math.h>
+-#define ISNANF(f) isnanf(f)
++#define ISNANF(f) isnan(f)
+ #define ISNAND(d) isnan(d)
+ #elif defined(_AIX)
+ #include <math.h>
+--- old/src/java.base/unix/native/libjli/java_md_solinux.c
++++ new/src/java.base/unix/native/libjli/java_md_solinux.c
+@@ -235,6 +235,39 @@
+     char *dmllp = NULL;
+     char *p; /* a utility pointer */
+ 
++#ifdef __linux
++#ifndef LIBC
++#error "LIBC not set"
++#endif
++
++    if (strcmp(LIBC, "musl") == 0) {
++      /*
++       * The musl library loader requires LD_LIBRARY_PATH to be set in
++       * order to correctly resolve the dependency libjava.so has on libjvm.so.
++       *
++       * Specifically, it differs from glibc in the sense that even if
++       * libjvm.so has already been loaded it will not be considered a
++       * candidate for resolving the dependency unless the *full* path
++       * of the already loaded library matches the dependency being loaded.
++       *
++       * libjvm.so is being loaded by the launcher using a long path to
++       * dlopen, not just the basename of the library. Typically this
++       * is something like "../lib/server/libjvm.so". However, if/when
++       * libjvm.so later tries to dlopen libjava.so (which it does in
++       * order to get access to a few functions implemented in
++       * libjava.so) the musl loader will, as part of loading
++       * dependent libraries, try to load libjvm.so using only its
++       * basename "libjvm.so". Since this does not match the longer
++       * path path it was first loaded with, the already loaded
++       * library is not considered a candidate, and the loader will
++       * instead look for libjvm.so elsewhere. If it's not in
++       * LD_LIBRARY_PATH the dependency load will fail, and libjava.so
++       * will therefore fail as well.
++       */
++      return JNI_TRUE;
++    }
++#endif
++
+ #ifdef AIX
+     /* We always have to set the LIBPATH on AIX because ld doesn't support $ORIGIN. */
+     return JNI_TRUE;
+--- old/src/java.base/unix/native/libnio/ch/NativeThread.c
++++ new/src/java.base/unix/native/libnio/ch/NativeThread.c
+@@ -36,7 +36,7 @@
+ #ifdef __linux__
+   #include <pthread.h>
+   /* Also defined in net/linux_close.c */
+-  #define INTERRUPT_SIGNAL (__SIGRTMAX - 2)
++  #define INTERRUPT_SIGNAL (SIGRTMAX - 2)
+ #elif defined(_AIX)
+   #include <pthread.h>
+   /* Also defined in net/aix_close.c */
+--- old/src/java.desktop/unix/native/libawt_xawt/xawt/XToolkit.c
++++ new/src/java.desktop/unix/native/libawt_xawt/xawt/XToolkit.c
+@@ -27,9 +27,6 @@
+ #include <X11/Xutil.h>
+ #include <X11/Xos.h>
+ #include <X11/Xatom.h>
+-#ifdef __linux__
+-#include <execinfo.h>
+-#endif
+ 
+ #include <jvm.h>
+ #include <jni.h>
+@@ -790,26 +787,6 @@
+     }
+     return ret;
+ }
+-
+-#ifdef __linux__
+-void print_stack(void)
+-{
+-  void *array[10];
+-  size_t size;
+-  char **strings;
+-  size_t i;
+-
+-  size = backtrace (array, 10);
+-  strings = backtrace_symbols (array, size);
+-
+-  fprintf (stderr, "Obtained %zd stack frames.\n", size);
+-
+-  for (i = 0; i < size; i++)
+-     fprintf (stderr, "%s\n", strings[i]);
+-
+-  free (strings);
+-}
+-#endif
+ 
+ Window get_xawt_root_shell(JNIEnv *env) {
+   static jclass classXRootWindow = NULL;
+--- old/src/jdk.jdwp.agent/share/native/libjdwp/util.h
++++ new/src/jdk.jdwp.agent/share/native/libjdwp/util.h
+@@ -35,15 +35,15 @@
+ #ifdef DEBUG
+     /* Just to make sure these interfaces are not used here. */
+     #undef free
+-    #define free(p) Do not use this interface.
++    #define free do_not_use_this_interface_free
+     #undef malloc
+-    #define malloc(p) Do not use this interface.
++    #define malloc do_not_use_this_interface_malloc
+     #undef calloc
+-    #define calloc(p) Do not use this interface.
++    #define calloc do_not_use_this_interface_calloc
+     #undef realloc
+-    #define realloc(p) Do not use this interface.
++    #define realloc do_not_use_this_interface_realloc
+     #undef strdup
+-    #define strdup(p) Do not use this interface.
++    #define strdup do_not_use_this_interface_strdup
+ #endif
+ 
+ #include "log_messages.h"
+--- old/test/hotspot/jtreg/runtime/StackGuardPages/exeinvoke.c
++++ new/test/hotspot/jtreg/runtime/StackGuardPages/exeinvoke.c
+@@ -33,6 +33,7 @@
+ 
+ #include <assert.h>
+ #include <jni.h>
++#include <jvm.h>
+ #include <alloca.h>
+ #include <signal.h>
+ #include <string.h>
+@@ -91,6 +92,20 @@
+   }
+ }
+ 
++int get_java_stacksize () {
++  size_t stacksize;
++  pthread_attr_t attr;
++  JDK1_1InitArgs jdk_args;
++
++  jdk_args.version = JNI_VERSION_1_1;
++  JNI_GetDefaultJavaVMInitArgs(&jdk_args);
++  if (jdk_args.javaStackSize <= 0) {
++    fprintf(stderr, "Test ERROR. Can't get a valid value for the default stacksize.\n");
++    exit(7);
++  }
++  return jdk_args.javaStackSize;
++}
++
+ void *run_java_overflow (void *p) {
+   JNIEnv *env;
+   jclass class_id;
+@@ -254,13 +269,19 @@
+     exit(7);
+   }
+ 
++  int stack_size = get_java_stacksize();
+   pthread_t thr;
++  pthread_attr_t thread_attr;
+ 
++  pthread_attr_init(&thread_attr);
++  pthread_attr_setstacksize(&thread_attr, stack_size);
++
+   if (argc > 1 && strcmp(argv[1], "test_java_overflow") == 0) {
+     printf("\nTesting JAVA_OVERFLOW\n");
+ 
+     printf("Testing stack guard page behaviour for other thread\n");
+-    pthread_create (&thr, NULL, run_java_overflow, NULL);
++
++    pthread_create (&thr, &thread_attr, run_java_overflow, NULL);
+     pthread_join (thr, NULL);
+ 
+     printf("Testing stack guard page behaviour for initial thread\n");
+@@ -273,7 +294,7 @@
+     printf("\nTesting NATIVE_OVERFLOW\n");
+ 
+     printf("Testing stack guard page behaviour for other thread\n");
+-    pthread_create (&thr, NULL, run_native_overflow, NULL);
++    pthread_create (&thr, &thread_attr, run_native_overflow, NULL);
+     pthread_join (thr, NULL);
+ 
+     printf("Testing stack guard page behaviour for initial thread\n");
+--- old/test/jdk/java/lang/ProcessBuilder/Basic.java
++++ new/test/jdk/java/lang/ProcessBuilder/Basic.java
+@@ -396,8 +396,8 @@
+                 if (failed != 0) throw new Error("null PATH");
+             } else if (action.equals("PATH search algorithm")) {
+                 equal(System.getenv("PATH"), "dir1:dir2:");
+-                check(new File("/bin/true").exists());
+-                check(new File("/bin/false").exists());
++                check(new File(TrueExe.path()).exists());
++                check(new File(FalseExe.path()).exists());
+                 String[] cmd = {"prog"};
+                 ProcessBuilder pb1 = new ProcessBuilder(cmd);
+                 ProcessBuilder pb2 = new ProcessBuilder(cmd);
+@@ -438,13 +438,13 @@
+                         checkPermissionDenied(pb);
+ 
+                         // continue searching if EACCES
+-                        copy("/bin/true", "dir2/prog");
++                        copy(TrueExe.path(), "dir2/prog");
+                         equal(run(pb).exitValue(), True.exitValue());
+                         new File("dir1/prog").delete();
+                         new File("dir2/prog").delete();
+ 
+                         new File("dir2/prog").mkdirs();
+-                        copy("/bin/true", "dir1/prog");
++                        copy(TrueExe.path(), "dir1/prog");
+                         equal(run(pb).exitValue(), True.exitValue());
+ 
+                         // Check empty PATH component means current directory.
+@@ -460,10 +460,10 @@
+                             pb.command(command);
+                             File prog = new File("./prog");
+                             // "Normal" binaries
+-                            copy("/bin/true", "./prog");
++                            copy(TrueExe.path(), "./prog");
+                             equal(run(pb).exitValue(),
+                                   True.exitValue());
+-                            copy("/bin/false", "./prog");
++                            copy(FalseExe.path(), "./prog");
+                             equal(run(pb).exitValue(),
+                                   False.exitValue());
+                             prog.delete();
+@@ -518,12 +518,12 @@
+                         new File("dir2/prog").delete();
+                         new File("prog").delete();
+                         new File("dir3").mkdirs();
+-                        copy("/bin/true", "dir1/prog");
+-                        copy("/bin/false", "dir3/prog");
++                        copy(TrueExe.path(), "dir1/prog");
++                        copy(FalseExe.path(), "dir3/prog");
+                         pb.environment().put("PATH","dir3");
+                         equal(run(pb).exitValue(), True.exitValue());
+-                        copy("/bin/true", "dir3/prog");
+-                        copy("/bin/false", "dir1/prog");
++                        copy(TrueExe.path(), "dir3/prog");
++                        copy(FalseExe.path(), "dir1/prog");
+                         equal(run(pb).exitValue(), False.exitValue());
+ 
+                     } finally {
+@@ -620,6 +620,13 @@
+              new File("/bin/false").exists());
+     }
+ 
++    static class BusyBox {
++        public static boolean is() { return is; }
++        private static final boolean is =
++            (! Windows.is() &&
++             new File("/bin/busybox").exists());
++    }
++
+     static class UnicodeOS {
+         public static boolean is() { return is; }
+         private static final String osName = System.getProperty("os.name");
+@@ -658,6 +665,45 @@
+         }
+     }
+ 
++    // On alpine linux, /bin/true and /bin/false are just links to /bin/busybox.
++    // Some tests copy /bin/true and /bin/false to files with a different filename.
++    // However, copying the busbox executable into a file with a different name
++    // won't result in the expected return codes. As workaround, we create
++    // executable files that can be copied and produce the exepected return
++    // values. We use this workaround, if we find the busybox executable.
++
++    private static class TrueExe {
++        public static String path() { return path; }
++        private static final String path = path0();
++        private static String path0(){
++            if (!BusyBox.is()) {
++                return "/bin/true";
++            }
++            else {
++                File trueExe = new File("true");
++                setFileContents(trueExe, "#!/bin/true\n");
++                trueExe.setExecutable(true);
++                return trueExe.getAbsolutePath();
++            }
++        }
++    }
++
++    private static class FalseExe {
++        public static String path() { return path; }
++        private static final String path = path0();
++        private static String path0(){
++            if (!BusyBox.is()) {
++                return "/bin/false";
++            }
++            else {
++                File falseExe = new File("false");
++                setFileContents(falseExe, "#!/bin/false\n");
++                falseExe.setExecutable(true);
++                return falseExe.getAbsolutePath();
++            }
++        }
++    }
++
+     static class EnglishUnix {
+         private static final Boolean is =
+             (! Windows.is() && isEnglish("LANG") && isEnglish("LC_ALL"));
+@@ -1961,7 +2007,7 @@
+             //----------------------------------------------------------------
+             try {
+                 new File("suBdiR").mkdirs();
+-                copy("/bin/true", "suBdiR/unliKely");
++                copy(TrueExe.path(), "suBdiR/unliKely");
+                 final ProcessBuilder pb =
+                     new ProcessBuilder(new String[]{"unliKely"});
+                 pb.environment().put("PATH", "suBdiR");
+--- old/test/jdk/java/lang/ProcessHandle/InfoTest.java
++++ new/test/jdk/java/lang/ProcessHandle/InfoTest.java
+@@ -298,7 +298,14 @@
+                 }
+                 if (info.command().isPresent()) {
+                     String command = info.command().get();
+-                    String expected = Platform.isWindows() ? "sleep.exe" : "sleep";
++                    String expected = "sleep";
++                    if (Platform.isWindows()) {
++                        expected = "sleep.exe";
++                    } else if (new File("/bin/busybox").exists()) {
++                        // With busybox sleep is just a sym link to busybox.
++                        // The busbox executable is seen as ProcessHandle.Info command.
++                        expected = "busybox";
++                    }
+                     Assert.assertTrue(command.endsWith(expected), "Command: expected: \'" +
+                             expected + "\', actual: " + command);
+ 
diff --git a/testing/openjdk13/fix-bootjdk-check.patch b/testing/openjdk13/fix-bootjdk-check.patch
new file mode 100644
index 00000000000..c9d91f9d2a2
--- /dev/null
+++ b/testing/openjdk13/fix-bootjdk-check.patch
@@ -0,0 +1,15 @@
+The alpine builders print out a warning about sched_getaffinity() not working.
+This causes the version check for the boot jdk to fail.
+Patch the command to determine the version number to ignore any errors and warnings.
+
+--- old/make/autoconf/boot-jdk.m4
++++ new/make/autoconf/boot-jdk.m4
+@@ -74,7 +74,7 @@
+           BOOT_JDK_FOUND=no
+         else
+           # Oh, this is looking good! We probably have found a proper JDK. Is it the correct version?
+-          BOOT_JDK_VERSION=`"$BOOT_JDK/bin/java$EXE_SUFFIX" $USER_BOOT_JDK_OPTIONS -version 2>&1 | $HEAD -n 1`
++          BOOT_JDK_VERSION=`"$BOOT_JDK/bin/java$EXE_SUFFIX" $USER_BOOT_JDK_OPTIONS -version 2>&1 | $GREP version | $HEAD -n 1`
+           if [ [[ "$BOOT_JDK_VERSION" =~ "Picked up" ]] ]; then
+             AC_MSG_NOTICE([You have _JAVA_OPTIONS or JAVA_TOOL_OPTIONS set. This can mess up the build. Please use --with-boot-jdk-jvmargs instead.])
+             AC_MSG_NOTICE([Java reports: "$BOOT_JDK_VERSION".])
diff --git a/testing/openjdk13/make-4.3.patch b/testing/openjdk13/make-4.3.patch
new file mode 100644
index 00000000000..356c6a988a6
--- /dev/null
+++ b/testing/openjdk13/make-4.3.patch
@@ -0,0 +1,17 @@
+upstream report: https://bugs.openjdk.java.net/browse/JDK-8237879.
+
+diff --git a/make/common/MakeBase.gmk b/make/common/MakeBase.gmk
+index 170c3ed..697f9d2 100644
+--- a/make/common/MakeBase.gmk
++++ b/make/common/MakeBase.gmk
+@@ -532,7 +532,9 @@ DependOnVariableHelper = \
+               $(info NewVariable $1: >$(strip $($1))<) \
+               $(info OldVariable $1: >$(strip $($1_old))<)) \
+           $(call WriteFile, $1_old:=$(call DoubleDollar,$(call EscapeHash,$($1))), \
+-              $(call DependOnVariableFileName, $1, $2))) \
++              $(call DependOnVariableFileName, $1, $2)) \
++              $(eval $(call DependOnVariableFileName, $1, $2): ) \
++        ) \
+         $(call DependOnVariableFileName, $1, $2) \
+     )
+ 
diff --git a/testing/openjdk13/ppc64le.patch b/testing/openjdk13/ppc64le.patch
new file mode 100644
index 00000000000..b4800b62acb
--- /dev/null
+++ b/testing/openjdk13/ppc64le.patch
@@ -0,0 +1,241 @@
+The ucontext_t-Type is somewhat different with musl libc.
+Add some precompiler conditions to use the right fields from the struct.
+
+--- old/src/hotspot/cpu/ppc/macroAssembler_ppc.cpp
++++ new/src/hotspot/cpu/ppc/macroAssembler_ppc.cpp
+@@ -47,6 +47,10 @@
+ #include "opto/intrinsicnode.hpp"
+ #endif
+ 
++#if ! (defined(__GLIBC__) || defined(__UCLIBC__))
++#include <asm/ptrace.h>
++#endif
++
+ #ifdef PRODUCT
+ #define BLOCK_COMMENT(str) // nothing
+ #else
+@@ -1290,7 +1294,11 @@
+   // the safepoing polling page.
+   ucontext_t* uc = (ucontext_t*) ucontext;
+   // Set polling address.
++#if defined(__GLIBC__) || defined(__UCLIBC__)
+   address addr = (address)uc->uc_mcontext.regs->gpr[ra] + (ssize_t)ds;
++#else // Musl
++  address addr = (address)uc->uc_mcontext.gp_regs[ra] + (ssize_t) ds;
++#endif
+   if (polling_address_ptr != NULL) {
+     *polling_address_ptr = addr;
+   }
+@@ -1353,11 +1361,20 @@
+       || (is_stdu(instruction) && rs == 1)) {
+     int ds = inv_ds_field(instruction);
+     // return banged address
++#if defined(__GLIBC__) || defined(__UCLIBC__)
+     return ds+(address)uc->uc_mcontext.regs->gpr[ra];
++#else // Musl
++    return ds+(address)uc->uc_mcontext.gp_regs[ra];
++#endif
+   } else if (is_stdux(instruction) && rs == 1) {
+     int rb = inv_rb_field(instruction);
++#if defined(__GLIBC__) || defined(__UCLIBC__)
+     address sp = (address)uc->uc_mcontext.regs->gpr[1];
+     long rb_val = (long)uc->uc_mcontext.regs->gpr[rb];
++#else // Musl
++    address sp = (address)uc->uc_mcontext.gp_regs[1];
++    long rb_val = (long)uc->uc_mcontext.gp_regs[rb];
++#endif
+     return ra != 1 || rb_val >= 0 ? NULL         // not a stack bang
+                                   : sp + rb_val; // banged address
+   }
+--- old/src/hotspot/cpu/ppc/vm_version_ppc.cpp
++++ new/src/hotspot/cpu/ppc/vm_version_ppc.cpp
+@@ -50,6 +50,10 @@
+ #endif
+ #endif
+ 
++#if ! (defined(__GLIBC__) || defined(__UCLIBC__))
++#include <asm/ptrace.h>
++#endif
++
+ bool VM_Version::_is_determine_features_test_running = false;
+ uint64_t VM_Version::_dscr_val = 0;
+ 
+@@ -892,7 +896,7 @@
+   unsigned long auxv = getauxval(AT_HWCAP2);
+ 
+   if (auxv & PPC_FEATURE2_HTM_NOSC) {
+-    if (auxv & PPC_FEATURE2_HAS_HTM) {
++    if (auxv & PPC_FEATURE2_HTM) {
+       // TM on POWER8 and POWER9 in compat mode (VM) is supported by the JVM.
+       // TM on POWER9 DD2.1 NV (baremetal) is not supported by the JVM (TM on
+       // POWER9 DD2.1 NV has a few issues that need a couple of firmware
+--- old/src/hotspot/os_cpu/linux_ppc/os_linux_ppc.cpp
++++ new/src/hotspot/os_cpu/linux_ppc/os_linux_ppc.cpp
+@@ -76,7 +76,11 @@
+ # include <poll.h>
+ # include <ucontext.h>
+ 
++#if ! (defined(__GLIBC__) || defined(__UCLIBC__))
++#include <asm/ptrace.h>
++#endif
+ 
++
+ address os::current_stack_pointer() {
+   intptr_t* csp;
+ 
+@@ -108,24 +112,42 @@
+   // - if uc was filled by getcontext(), it is undefined - getcontext() does not fill
+   //   it because the volatile registers are not needed to make setcontext() work.
+   //   Hopefully it was zero'd out beforehand.
++#if defined(__GLIBC__) || defined(__UCLIBC__)
+   guarantee(uc->uc_mcontext.regs != NULL, "only use ucontext_get_pc in sigaction context");
+   return (address)uc->uc_mcontext.regs->nip;
++#else // Musl
++  guarantee(uc->uc_mcontext.gp_regs != NULL, "only use ucontext_get_pc in sigaction context");
++  return (address)uc->uc_mcontext.gp_regs[PT_NIP];
++#endif
+ }
+ 
+ // modify PC in ucontext.
+ // Note: Only use this for an ucontext handed down to a signal handler. See comment
+ // in ucontext_get_pc.
+ void os::Linux::ucontext_set_pc(ucontext_t * uc, address pc) {
++#if defined(__GLIBC__) || defined(__UCLIBC__)
+   guarantee(uc->uc_mcontext.regs != NULL, "only use ucontext_set_pc in sigaction context");
+   uc->uc_mcontext.regs->nip = (unsigned long)pc;
++#else // Musl
++  guarantee(uc->uc_mcontext.gp_regs != NULL, "only use ucontext_set_pc in sigaction context");
++  uc->uc_mcontext.gp_regs[PT_NIP] = (unsigned long)pc;
++#endif
+ }
+ 
+ static address ucontext_get_lr(const ucontext_t * uc) {
++#if defined(__GLIBC__) || defined(__UCLIBC__)
+   return (address)uc->uc_mcontext.regs->link;
++#else // Musl
++  return (address)uc->uc_mcontext.gp_regs[PT_LNK];
++#endif
+ }
+ 
+ intptr_t* os::Linux::ucontext_get_sp(const ucontext_t * uc) {
++#if defined(__GLIBC__) || defined(__UCLIBC__)
+   return (intptr_t*)uc->uc_mcontext.regs->gpr[1/*REG_SP*/];
++#else // Musl
++  return (intptr_t*)uc->uc_mcontext.gp_regs[1/*REG_SP*/];
++#endif
+ }
+ 
+ intptr_t* os::Linux::ucontext_get_fp(const ucontext_t * uc) {
+@@ -133,7 +155,11 @@
+ }
+ 
+ static unsigned long ucontext_get_trap(const ucontext_t * uc) {
++#if defined(__GLIBC__) || defined(__UCLIBC__)
+   return uc->uc_mcontext.regs->trap;
++#else // Musl
++  return uc->uc_mcontext.gp_regs[PT_TRAP];
++#endif
+ }
+ 
+ ExtendedPC os::fetch_frame_from_context(const void* ucVoid,
+@@ -259,7 +285,11 @@
+     // 3.2.1 "Machine State Register"), however note that ISA notation for bit
+     // numbering is MSB 0, so for normal bit numbering (LSB 0) they come to be
+     // bits 33 and 34. It's not related to endianness, just a notation matter.
++#if defined(__GLIBC__) || defined(__UCLIBC__)
+     if (second_uc->uc_mcontext.regs->msr & 0x600000000) {
++#else // Musl
++    if (second_uc->uc_mcontext.gp_regs[PT_MSR] & 0x600000000) {
++#endif
+       if (TraceTraps) {
+         tty->print_cr("caught signal in transaction, "
+                         "ignoring to jump to abort handler");
+@@ -570,6 +600,7 @@
+   const ucontext_t* uc = (const ucontext_t*)context;
+ 
+   st->print_cr("Registers:");
++#if defined(__GLIBC__) || defined(__UCLIBC__)
+   st->print("pc =" INTPTR_FORMAT "  ", uc->uc_mcontext.regs->nip);
+   st->print("lr =" INTPTR_FORMAT "  ", uc->uc_mcontext.regs->link);
+   st->print("ctr=" INTPTR_FORMAT "  ", uc->uc_mcontext.regs->ctr);
+@@ -578,8 +609,18 @@
+     st->print("r%-2d=" INTPTR_FORMAT "  ", i, uc->uc_mcontext.regs->gpr[i]);
+     if (i % 3 == 2) st->cr();
+   }
++#else // Musl
++  st->print("pc =" INTPTR_FORMAT "  ", uc->uc_mcontext.gp_regs[PT_NIP]);
++  st->print("lr =" INTPTR_FORMAT "  ", uc->uc_mcontext.gp_regs[PT_LNK]);
++  st->print("ctr=" INTPTR_FORMAT "  ", uc->uc_mcontext.gp_regs[PT_CTR]);
+   st->cr();
++  for (int i = 0; i < 32; i++) {
++    st->print("r%-2d=" INTPTR_FORMAT "  ", i, uc->uc_mcontext.gp_regs[i]);
++    if (i % 3 == 2) st->cr();
++  }
++#endif
+   st->cr();
++  st->cr();
+ 
+   intptr_t *sp = (intptr_t *)os::Linux::ucontext_get_sp(uc);
+   st->print_cr("Top of Stack: (sp=" PTR_FORMAT ")", p2i(sp));
+@@ -602,12 +643,22 @@
+   st->print_cr("Register to memory mapping:");
+   st->cr();
+ 
++#if defined(__GLIBC__) || defined(__UCLIBC__)
+   st->print("pc ="); print_location(st, (intptr_t)uc->uc_mcontext.regs->nip);
+   st->print("lr ="); print_location(st, (intptr_t)uc->uc_mcontext.regs->link);
+   st->print("ctr ="); print_location(st, (intptr_t)uc->uc_mcontext.regs->ctr);
++#else // Musl
++  st->print("pc ="); print_location(st, (intptr_t)uc->uc_mcontext.gp_regs[PT_NIP]);
++  st->print("lr ="); print_location(st, (intptr_t)uc->uc_mcontext.gp_regs[PT_LNK]);
++  st->print("ctr ="); print_location(st, (intptr_t)uc->uc_mcontext.gp_regs[PT_CTR]);
++#endif
+   for (int i = 0; i < 32; i++) {
+     st->print("r%-2d=", i);
++#if defined(__GLIBC__) || defined(__UCLIBC__)
+     print_location(st, uc->uc_mcontext.regs->gpr[i]);
++#else // Musl
++    print_location(st, uc->uc_mcontext.gp_regs[i]);
++#endif
+   }
+   st->cr();
+ }
+--- old/src/hotspot/os_cpu/linux_ppc/thread_linux_ppc.cpp
++++ new/src/hotspot/os_cpu/linux_ppc/thread_linux_ppc.cpp
+@@ -27,6 +27,10 @@
+ #include "runtime/frame.inline.hpp"
+ #include "runtime/thread.hpp"
+ 
++#if ! (defined(__GLIBC__) || defined(__UCLIBC__))
++#include <asm/ptrace.h>
++#endif
++
+ frame JavaThread::pd_last_frame() {
+   assert(has_last_Java_frame(), "must have last_Java_sp() when suspended");
+ 
+@@ -56,8 +60,13 @@
+   // if we were running Java code when SIGPROF came in.
+   if (isInJava) {
+     ucontext_t* uc = (ucontext_t*) ucontext;
++#if defined(__GLIBC__) || defined(__UCLIBC__)
+     frame ret_frame((intptr_t*)uc->uc_mcontext.regs->gpr[1/*REG_SP*/],
+                      (address)uc->uc_mcontext.regs->nip);
++#else // Musl
++    frame ret_frame((intptr_t*)uc->uc_mcontext.gp_regs[1/*REG_SP*/],
++                     (address)uc->uc_mcontext.gp_regs[PT_NIP]);
++#endif
+ 
+     if (ret_frame.pc() == NULL) {
+       // ucontext wasn't useful
+@@ -69,7 +78,11 @@
+        if (MetaspaceObj::is_valid((Method*)(istate->method)) == false) {
+          return false;
+        }
++#if defined(__GLIBC__) || defined(__UCLIBC__)
+        uint64_t reg_bcp = uc->uc_mcontext.regs->gpr[14/*R14_bcp*/];
++#else // Musl
++       uint64_t reg_bcp = uc->uc_mcontext.gp_regs[14/*R14_bcp*/];
++#endif
+        uint64_t istate_bcp = istate->bcp;
+        uint64_t code_start = (uint64_t)(((Method*)(istate->method))->code_base());
+        uint64_t code_end = (uint64_t)(((Method*)istate->method)->code_base() + ((Method*)istate->method)->code_size());