Added support for mipsel

backend.native/compiler/ir/backend.native/src/org/jetbrains/kotlin/backend/konan/LinkStage.kt

@@ -155,7 +155,7 @@ internal open class LinuxBasedPlatform(val distribution: Distribution)
                     "${targetSysRoot}/usr/lib64/crt1.o",
                     "${targetSysRoot}/usr/lib64/crti.o", "${libGcc}/crtbegin.o",
                     "-L${llvmLib}", "-L${libGcc}"))
-            if (distribution.target != KonanTarget.MIPS) add("--hash-style=gnu") // MIPS doesn't support hash-style=gnu
+            if (distribution.target != KonanTarget.MIPS && distribution.target != KonanTarget.MIPSEL) add("--hash-style=gnu") // MIPS doesn't support hash-style=gnu
             addAll(specificLibs)
             addAll(listOf("-L${targetSysRoot}/../lib", "-L${targetSysRoot}/lib", "-L${targetSysRoot}/usr/lib"))
             if (optimize) addAll(listOf("-plugin", "$llvmLib/LLVMgold.so") + pluginOptimizationFlags)
@@ -218,7 +218,8 @@ internal class LinkStage(val context: Context) {
     private val distribution = context.config.distribution
 
     private val platform = when (target) {
-        KonanTarget.LINUX, KonanTarget.RASPBERRYPI, KonanTarget.MIPS ->
+        KonanTarget.LINUX, KonanTarget.RASPBERRYPI,
+        KonanTarget.MIPS, KonanTarget.MIPSEL ->
             LinuxBasedPlatform(distribution)
         KonanTarget.MACBOOK, KonanTarget.IPHONE, KonanTarget.IPHONE_SIM ->
             MacOSBasedPlatform(distribution)

backend.native/konan.properties

@@ -172,6 +172,30 @@ dynamicLinker.mips = /lib/ld.so.1
 # targetSysRoot relative
 abiSpecificLibraries.mips =
 
+# MIPSel
+targetToolchain.linux-mipsel = target-gcc-toolchain-1-linux-mips-x86-64/x86_64-unknown-linux-gnu
+dependencies.linux-mipsel = \
+    clang-llvm-3.9.0-linux-x86-64 \
+    target-gcc-toolchain-1-linux-mips-x86-64 \
+    target-sysroot-mipsel \
+    libffi-3.2.1-2-linux-x86-64 \
+    libffi-3.2.1-linux-mipsel
+quadruple.mipsel = mipsel-unknown-linux-gnu
+entrySelector.mipsel = --defsym main=Konan_main
+linkerOptimizationFlags.mipsel = --gc-sections
+targetSysRoot.mipsel = target-sysroot-mipsel
+# We could reuse host toolchain here.
+libffiDir.mipsel = libffi-3.2.1-linux-mipsel
+linkerKonanFlags.mipsel = -Bstatic -lstdc++ -Bdynamic -ldl -lm -lpthread
+# targetSysroot-relative.
+libGcc.mipsel = lib/gcc/mipsel-unknown-linux-gnu/4.9.4
+llvmLtoFlags.mipsel =
+llvmLtoOptFlags.mipsel = -O3 -function-sections
+llvmLtoNooptFlags.mipsel = -O1
+dynamicLinker.mipsel = /lib/ld.so.1
+# targetSysRoot relative
+abiSpecificLibraries.mipsel =
+
 # Android ARM32, based on NDK for android-21.
 targetToolchain.osx-android_arm32 = target-toolchain-21-osx-android_arm32
 # TODO: split dependencies to host-dependent and host-independent parts.

backend.native/tests/build.gradle

@@ -2084,7 +2084,9 @@ kotlinNativeInterop {
 }
 
 task interop0(type: RunInteropKonanTest) {
-    disabled = (project.testTarget == 'wasm32') // No interop for wasm yet.
+    disabled = (project.testTarget == 'wasm32') ||  // No interop for wasm yet.
+               (project.testTarget == 'mips')   ||  //  st_uid of '/' is not equal to 0 when using qemu
+               (project.testTarget == 'mipsel')     //  st_uid of '/' is not equal to 0 when using qemu
     goldValue = "0\n0\n"
     source = "interop/basics/0.kt"
     interop = 'sysstat'
@@ -2112,6 +2114,7 @@ task interop3(type: RunInteropKonanTest) {
     // test back on.
     disabled = (project.testTarget == 'raspberrypi') ||
                (project.testTarget == 'mips') ||
+               (project.testTarget == 'mipsel') ||
                (project.testTarget == 'wasm32') // No interop for wasm yet.
     goldValue = "8 9 12 13 14 \n"
     source = "interop/basics/3.kt"
@@ -2127,12 +2130,14 @@ task interop4(type: RunInteropKonanTest) {
 
 task interop_bitfields(type: RunInteropKonanTest) {
     disabled = (project.testTarget == 'wasm32') // No interop for wasm yet.
+    expectedFail = (project.testTarget == 'mips') // fails because of big-endiannes
     source = "interop/basics/bf.kt"
     interop = 'bitfields'
 }
 
 task interop_funptr(type: RunInteropKonanTest) {
     disabled = (project.testTarget == 'wasm32') // No interop for wasm yet.
+    expectedFail = (project.testTarget == 'mips') // fails because of big-endiannes
     goldValue = "42\n17\n1\n0\n"
     source = "interop/basics/funptr.kt"
     interop = 'cfunptr'