Add support for RISC-V (riscv64)

Signed-off-by: David Abdurachmanov <david.abdurachmanov@gmail.com>

java-11-openjdk-riscv64.patch

@@ -0,0 +1,67 @@
+diff --git a/openjdk/make/autoconf/platform.m4 b/openjdk/make/autoconf/platform.m4
+index e06c11af0..e1c55bb1b 100644
+--- a/openjdk/make/autoconf/platform.m4
++++ b/openjdk/make/autoconf/platform.m4
+@@ -150,6 +150,18 @@ AC_DEFUN([PLATFORM_EXTRACT_VARS_FROM_CPU],
+       VAR_CPU_BITS=64
+       VAR_CPU_ENDIAN=big
+       ;;
++    riscv32)
++      VAR_CPU=riscv32
++      VAR_CPU_ARCH=riscv
++      VAR_CPU_BITS=32
++      VAR_CPU_ENDIAN=little
++      ;;
++    riscv64)
++      VAR_CPU=riscv64
++      VAR_CPU_ARCH=riscv
++      VAR_CPU_BITS=64
++      VAR_CPU_ENDIAN=little
++      ;;
+     *)
+       AC_MSG_ERROR([unsupported cpu $1])
+       ;;
+diff --git a/openjdk/src/hotspot/os/linux/os_linux.cpp b/openjdk/src/hotspot/os/linux/os_linux.cpp
+index 8496e3db1..2d5058a7b 100644
+--- a/openjdk/src/hotspot/os/linux/os_linux.cpp
++++ b/openjdk/src/hotspot/os/linux/os_linux.cpp
+@@ -1728,6 +1728,9 @@ void * os::dll_load(const char *filename, char *ebuf, int ebuflen) {
+ #ifndef EM_AARCH64
+   #define EM_AARCH64    183               /* ARM AARCH64 */
+ #endif
++#ifndef EM_RISCV
++  #define EM_RISCV      243               /* RISC-V */
++#endif
+ 
+   static const arch_t arch_array[]={
+     {EM_386,         EM_386,     ELFCLASS32, ELFDATA2LSB, (char*)"IA 32"},
+@@ -1753,6 +1756,7 @@ void * os::dll_load(const char *filename, char *ebuf, int ebuflen) {
+     {EM_PARISC,      EM_PARISC,  ELFCLASS32, ELFDATA2MSB, (char*)"PARISC"},
+     {EM_68K,         EM_68K,     ELFCLASS32, ELFDATA2MSB, (char*)"M68k"},
+     {EM_AARCH64,     EM_AARCH64, ELFCLASS64, ELFDATA2LSB, (char*)"AARCH64"},
++    {EM_RISCV,       EM_RISCV,   ELFCLASSNONE, ELFDATA2MSB, (char*)"RISC-V"},
+   };
+ 
+ #if  (defined IA32)
+@@ -1789,7 +1793,7 @@ void * os::dll_load(const char *filename, char *ebuf, int ebuflen) {
+   static  Elf32_Half running_arch_code=EM_SH;
+ #else
+     #error Method os::dll_load requires that one of following is defined:\
+-        AARCH64, ALPHA, ARM, AMD64, IA32, IA64, M68K, MIPS, MIPSEL, PARISC, __powerpc__, __powerpc64__, S390, SH, __sparc
++        AARCH64, ALPHA, ARM, AMD64, IA32, IA64, M68K, MIPS, MIPSEL, PARISC, __powerpc__, __powerpc64__, S390, SH, __sparc, __riscv
+ #endif
+ 
+   // Identify compatability class for VM's architecture and library's architecture
+@@ -1822,10 +1826,12 @@ void * os::dll_load(const char *filename, char *ebuf, int ebuflen) {
+   }
+ 
+ #ifndef S390
++#ifndef __riscv
+   if (lib_arch.elf_class != arch_array[running_arch_index].elf_class) {
+     ::snprintf(diag_msg_buf, diag_msg_max_length-1," (Possible cause: architecture word width mismatch)");
+     return NULL;
+   }
++#endif // !__riscv
+ #endif // !S390
+ 
+   if (lib_arch.compat_class != arch_array[running_arch_index].compat_class) {

java-11-openjdk.spec

@@ -167,6 +167,9 @@
 %ifarch %{aarch64}
 %global archinstall aarch64
 %endif
+%ifarch riscv64
+%global archinstall riscv64
+%endif
 # 32 bit sparc, optimized for v9
 %ifarch sparcv9
 %global archinstall sparc
@@ -838,7 +841,7 @@ Provides: java-%{javaver}-%{origin}-src%{?1} = %{epoch}:%{version}-%{release}
 
 Name:    java-%{javaver}-%{origin}
 Version: %{newjavaver}.%{buildver}
-Release: 1%{?dist}
+Release: 1.0.riscv64%{?dist}
 # java-1.5.0-ibm from jpackage.org set Epoch to 1 for unknown reasons
 # and this change was brought into RHEL-4. java-1.5.0-ibm packages
 # also included the epoch in their virtual provides. This created a
@@ -891,6 +894,10 @@ Source13: TestCryptoLevel.java
 # Ensure ECDSA is working
 Source14: TestECDSA.java
 
+# New versions of config files with RISC-V (riscv64) support.
+Source100: config.guess
+Source101: config.sub
+
 ############################################
 #
 # RPM/distribution specific patches
@@ -919,6 +926,8 @@ Patch6:    RHBZ-1628612-JDK-8210461-workaround-disable-aarch64-intrinsic.patch
 # available in jdk11u.
 Patch7:    RHBZ-1630996-JDK-8210858-workaround-disable-aarch64-intrinsic-log.patch
 
+Patch30: java-11-openjdk-riscv64.patch
+
 #############################################
 #
 # OpenJDK specific patches
@@ -973,7 +982,7 @@ BuildRequires: pkgconfig
 BuildRequires: xorg-x11-proto-devel
 BuildRequires: zip
 BuildRequires: javapackages-filesystem
-BuildRequires: java-11-openjdk-devel
+BuildRequires: java-openjdk-devel
 # Zero-assembler build requirement
 %ifnarch %{jit_arches}
 BuildRequires: libffi-devel
@@ -1196,6 +1205,10 @@ if [ $prioritylength -ne 7 ] ; then
  exit 14
 fi
 
+# Update config.{guess,sub} with RISC-V (riscv64) support
+cp %{SOURCE100} openjdk/make/autoconf/build-aux/
+cp %{SOURCE101} openjdk/make/autoconf/build-aux/
+
 # OpenJDK patches
 
 # Remove libraries that are linked
@@ -1213,6 +1226,7 @@ pushd %{top_level_dir_name}
 %patch10 -p1
 %patch11 -p1
 %patch12 -p1
+%patch30 -p2
 
 popd # openjdk
 
@@ -1272,7 +1286,7 @@ export NUM_PROC=${NUM_PROC:-1}
 [ ${NUM_PROC} -gt %{?_smp_ncpus_max} ] && export NUM_PROC=%{?_smp_ncpus_max}
 %endif
 
-%ifarch s390x sparc64 alpha %{power64} %{aarch64}
+%ifarch s390x sparc64 alpha %{power64} %{aarch64} riscv64
 export ARCH_DATA_MODEL=64
 %endif
 %ifarch alpha
@@ -1315,7 +1329,7 @@ bash ../configure \
     --with-version-build=%{buildver} \
     --with-version-pre="" \
     --with-version-opt="" \
-    --with-boot-jdk=/usr/lib/jvm/java-11-openjdk \
+    --with-boot-jdk=/usr/lib/jvm/java-10-openjdk \
     --with-debug-level=$debugbuild \
     --with-native-debug-symbols=internal \
     --enable-unlimited-crypto \
@@ -1763,6 +1777,9 @@ require "copy_jdk_configs.lua"
 
 
 %changelog
+* Tue Oct 16 2018 David Abdurachmanov <david.abdurachmanov@gmail.com> - 1:11.0.0.28-1.0.riscv64
+- Add support for RISC-V (riscv64)
+
 * Fri Sep 28 2018 Severin Gehwolf <sgehwolf@redhat.com> - 1:11.0.0.28-1
 - Identify as GA version and no longer as early access (EA).
 - JDK 11 has been released for GA on 2018-09-25.