From 350c0c18bb5d61bd4d4784880dfb470ee7a75bd9 Mon Sep 17 00:00:00 2001
From: panxuefeng <panxuefeng@loongson.cn>
Date: Wed, 25 May 2022 11:13:00 +0800
Subject: [PATCH] Support Loongarch64

Co-Authored-By: Ao Qi
---
 build.xml                          | 6 ++++++
 src/com/sun/jna/Native.java        | 2 +-
 src/com/sun/jna/NativeLibrary.java | 3 +++
 src/com/sun/jna/Platform.java      | 5 +++++
 src/com/sun/jna/Structure.java     | 4 ++--
 5 files changed, 17 insertions(+), 3 deletions(-)

diff --git a/build.xml b/build.xml
index b81b9d7584..31a053fe5a 100644
--- a/build.xml
+++ b/build.xml
@@ -529,6 +529,8 @@ com/sun/jna/linux-mips64el/libjnidispatch.so;
 processor=mips64el;osname=linux,
 com/sun/jna/linux-s390x/libjnidispatch.so;
 processor=S390x;osname=linux,
+com/sun/jna/linux-loongarch64/libjnidispatch.so;
+processor=loongarch64;osname=linux,
 
 com/sun/jna/freebsd-x86/libjnidispatch.so;
 processor=x86;osname=freebsd,
@@ -638,6 +640,9 @@ osname=macosx;processor=aarch64
       <zipfileset src="${lib.native}/linux-mips64el.jar"
                   includes="*jnidispatch*"
                   prefix="com/sun/jna/linux-mips64el"/>
+      <zipfileset src="${lib.native}/linux-loongarch64.jar"
+                  includes="*jnidispatch*"
+                  prefix="com/sun/jna/linux-loongarch64"/>
       <zipfileset src="${lib.native}/linux-s390x.jar"
                   includes="*jnidispatch*"
                   prefix="com/sun/jna/linux-s390x"/>
@@ -851,6 +856,7 @@ osname=macosx;processor=aarch64
     <copy file="${lib.native}/out-of-date.jar" tofile="${lib.native}/linux-ppc64le.jar" overwrite="true"/>
     <copy file="${lib.native}/out-of-date.jar" tofile="${lib.native}/linux-sparcv9.jar" overwrite="true"/>
     <copy file="${lib.native}/out-of-date.jar" tofile="${lib.native}/linux-mips64el.jar" overwrite="true"/>
+    <copy file="${lib.native}/out-of-date.jar" tofile="${lib.native}/linux-loongarch64.jar" overwrite="true"/>
     <copy file="${lib.native}/out-of-date.jar" tofile="${lib.native}/linux-s390x.jar" overwrite="true"/>
     <copy file="${lib.native}/out-of-date.jar" tofile="${lib.native}/linux-riscv64.jar" overwrite="true"/>
     <copy file="${lib.native}/out-of-date.jar" tofile="${lib.native}/freebsd-x86.jar" overwrite="true"/>
diff --git a/src/com/sun/jna/Native.java b/src/com/sun/jna/Native.java
index b832d4052f..e3c3d8ebef 100644
--- a/src/com/sun/jna/Native.java
+++ b/src/com/sun/jna/Native.java
@@ -250,7 +250,7 @@ static boolean isCompatibleVersion(String expectedVersion, String nativeVersion)
             setProtected(true);
         }
         MAX_ALIGNMENT = Platform.isSPARC() || Platform.isWindows()
-            || (Platform.isLinux() && (Platform.isARM() || Platform.isPPC() || Platform.isMIPS()))
+            || (Platform.isLinux() && (Platform.isARM() || Platform.isPPC() || Platform.isMIPS() || Platform.isLoongArch()))
             || Platform.isAIX()
             || (Platform.isAndroid() && !Platform.isIntel())
             ? 8 : LONG_SIZE;
diff --git a/src/com/sun/jna/NativeLibrary.java b/src/com/sun/jna/NativeLibrary.java
index c68e773d1d..63d0b8a24d 100644
--- a/src/com/sun/jna/NativeLibrary.java
+++ b/src/com/sun/jna/NativeLibrary.java
@@ -988,6 +988,9 @@ else if (Platform.isARM()) {
         else if (Platform.ARCH.equals("mips64el")) {
             libc = "-gnuabi64";
         }
+        else if (Platform.ARCH.equals("loongarch64")) {
+            libc = "-gnuabi64";   // TODO: not sure
+        }
 
         return cpu + kernel + libc;
     }
diff --git a/src/com/sun/jna/Platform.java b/src/com/sun/jna/Platform.java
index 7ee19e4a5b..ac1395e95d 100644
--- a/src/com/sun/jna/Platform.java
+++ b/src/com/sun/jna/Platform.java
@@ -195,6 +195,7 @@ public static final boolean is64Bit() {
             || "ppc64".equals(ARCH) || "ppc64le".equals(ARCH)
             || "sparcv9".equals(ARCH)
             || "mips64".equals(ARCH) || "mips64el".equals(ARCH)
+            || "loongarch64".equals(ARCH)
             || "amd64".equals(ARCH)
             || "aarch64".equals(ARCH)) {
             return true;
@@ -234,6 +235,10 @@ public static final boolean isMIPS() {
         return false;
     }
 
+    public static final boolean isLoongArch() {
+        return ARCH.startsWith("loongarch");
+    }
+
     static String getCanonicalArchitecture(String arch, int platform) {
         arch = arch.toLowerCase().trim();
         if ("powerpc".equals(arch)) {
diff --git a/src/com/sun/jna/Structure.java b/src/com/sun/jna/Structure.java
index b2457f69d7..39d3da0efa 100644
--- a/src/com/sun/jna/Structure.java
+++ b/src/com/sun/jna/Structure.java
@@ -2081,7 +2081,7 @@ public FFIType(Structure ref) {
                     }
                 }
                 if ((Platform.isIntel() && Platform.is64Bit() && !Platform.isWindows())
-                    || Platform.isARM()) {
+                    || Platform.isARM() || Platform.isLoongArch()) {
                     // System V x86-64 ABI requires, that in a union aggregate,
                     // that contains Integer and Double members, the parameters
                     // must be passed in the integer registers. I.e. in the case
@@ -2091,7 +2091,7 @@ public FFIType(Structure ref) {
                     // passing method would be used.
                     //
                     // It was observed, that the same behaviour is visible on
-                    // arm/aarch64.
+                    // arm/aarch64/loongarch64.
                     if(hasInteger && isFloatType(unionType)) {
                         unionType = new FFIType(unionType);
                         if(unionType.size.intValue() == 4) {