Add riscv64 support

Author: eirv

.gitignore

@@ -9,3 +9,4 @@ apache/local/generated
 .DS_Store
 /build
 /captures
+/apache/build

.gitmodules

@@ -19,3 +19,6 @@
 [submodule "external/lsplt"]
 	path = external/lsplt
 	url = https://github.com/JingMatrix/LSPlt
+[submodule "external/riscv64-inline-hook"]
+	path = external/riscv64-inline-hook
+	url = https://github.com/eirv/riscv64-inline-hook

README.md

@@ -58,6 +58,7 @@ You can contribute translation [here](https://crowdin.com/project/lsposed_jingma
 - [XposedBridge](https://github.com/rovo89/XposedBridge): the OG Xposed framework APIs
 - [LSPlant](https://github.com/JingMatrix/LSPlant): the core ART hooking framework
 - [Dobby](https://github.com/JingMatrix/Dobby): inline hooker for `LSPlant` and `native_api` implement
+- [riscv64-inline-hook](https://github.com/eirv/riscv64-inline-hook): inline hooker for `RISC-V 64`
 - [EdXposed](https://github.com/ElderDrivers/EdXposed): fork source
 - [xz-embedded](https://github.com/tukaani-project/xz-embedded): decompress `.gnu_debugdata` header section of stripped `libart.so`
 - ~~[Riru](https://github.com/RikkaApps/Riru): provides a way to inject code into zygote process~~

build.gradle.kts

@@ -45,7 +45,7 @@ cmaker {
         )
         cFlags.addAll(flags)
         cppFlags.addAll(flags)
-        abiFilters("arm64-v8a", "armeabi-v7a", "x86", "x86_64")
+        abiFilters("arm64-v8a", "armeabi-v7a", "x86", "x86_64", "riscv64")
     }
     buildTypes {
         if (it.name == "release") {

core/src/main/jni/CMakeLists.txt

@@ -17,10 +17,17 @@ set(IGNORED_WARNINGS
 	-Wno-gnu-flexible-array-initializer
 	-Wno-variadic-macros
 	-Wno-zero-length-array)
+set(${PROJECT_NAME}_LINK_LIBS lsplant_static xz_static log fmt-header-only)
+
+if (ANDROID_ABI STREQUAL "riscv64")
+	set(${PROJECT_NAME}_LINK_LIBS ${${PROJECT_NAME}_LINK_LIBS} rv64hook-static)
+else ()
+	set(${PROJECT_NAME}_LINK_LIBS ${${PROJECT_NAME}_LINK_LIBS} dobby_static)
+endif ()
 
 target_include_directories(${PROJECT_NAME} PUBLIC include)
 target_include_directories(${PROJECT_NAME} PRIVATE src ${EXTERNAL_ROOT}/xz-embedded/linux/include)
 target_compile_options(${PROJECT_NAME} PRIVATE -Wpedantic ${IGNORED_WARNINGS})
 
-target_link_libraries(${PROJECT_NAME} PUBLIC dobby_static lsplant_static xz_static log fmt-header-only)
+target_link_libraries(${PROJECT_NAME} PUBLIC ${${PROJECT_NAME}_LINK_LIBS})
 target_link_libraries(${PROJECT_NAME} PRIVATE dex_builder_static)

core/src/main/jni/src/native_api.h

@@ -28,7 +28,11 @@
 #include <cstdint>
 #include <dlfcn.h>
 #include <string>
+#ifdef __riscv
+#include <rv64hook.h>
+#else
 #include <dobby.h>
+#endif
 
 #include "config.h"
 #include "utils/hook_helper.hpp"
@@ -56,24 +60,35 @@ namespace lspd {
         if constexpr (isDebug) {
             Dl_info info;
             if (dladdr(original, &info))
-            LOGD("Dobby hooking {} ({}) from {} ({})",
+            LOGD("Inline hooking {} ({}) from {} ({})",
                  info.dli_sname ? info.dli_sname : "(unknown symbol)",
 				 info.dli_saddr ? info.dli_saddr : original,
                  info.dli_fname ? info.dli_fname : "(unknown file)", info.dli_fbase);
         }
+#ifdef __riscv
+        rv64hook::ScopedRWXMemory rwx(original);
+        return rv64hook::InlineHook(original, replace, backup) != nullptr ? 0 : -1;
+#else
         return DobbyHook(original, reinterpret_cast<dobby_dummy_func_t>(replace), reinterpret_cast<dobby_dummy_func_t *>(backup));
+#endif
     }
 
     inline int UnhookInline(void *original) {
         if constexpr (isDebug) {
             Dl_info info;
             if (dladdr(original, &info))
-            LOGD("Dobby unhooking {} ({}) from {} ({})",
+            LOGD("Inline unhooking {} ({}) from {} ({})",
                  info.dli_sname ? info.dli_sname : "(unknown symbol)",
 				 info.dli_saddr ? info.dli_saddr : original,
                  info.dli_fname ? info.dli_fname : "(unknown file)", info.dli_fbase);
         }
+#ifdef __riscv
+        rv64hook::ScopedRWXMemory rwx(original);
+        rv64hook::UnhookFunction(original);
+        return 0;
+#else
         return DobbyDestroy(original);
+#endif
     }
 }
 

external/CMakeLists.txt

@@ -1,5 +1,9 @@
 project(external)
 
+if (ANDROID_ABI STREQUAL "riscv64")
+	set(ANDROID_PLATFORM "android-35")
+endif ()
+
 macro(SET_OPTION option value)
     set(${option} ${value} CACHE INTERNAL "" FORCE)
 endmacro()
@@ -20,7 +24,11 @@ target_compile_options(xz_static PRIVATE -DXZ_USE_CRC64)
 target_include_directories(xz_static PRIVATE ${XZ_INCLUDES})
 
 OPTION(LSPLANT_BUILD_SHARED OFF)
-add_subdirectory(dobby)
+if (ANDROID_ABI STREQUAL "riscv64")
+	add_subdirectory(riscv64-inline-hook)
+else ()
+	add_subdirectory(dobby)
+endif ()
 add_subdirectory(fmt)
 add_subdirectory(lsplant/lsplant/src/main/jni)
 target_compile_definitions(fmt-header-only INTERFACE FMT_USE_LOCALE=0 FMT_USE_FLOAT=0 FMT_USE_DOUBLE=0 FMT_USE_LONG_DOUBLE=0 FMT_USE_BITINT=0)

external/riscv64-inline-hook

@@ -62,7 +62,7 @@ check_incompatible_module
 enforce_install_from_magisk_app
 
 # Check architecture
-if [ "$ARCH" != "arm" ] && [ "$ARCH" != "arm64" ] && [ "$ARCH" != "x86" ] && [ "$ARCH" != "x64" ]; then
+if [ "$ARCH" != "arm" ] && [ "$ARCH" != "arm64" ] && [ "$ARCH" != "x86" ] && [ "$ARCH" != "x64" ] && [ "$ARCH" != "riscv64" ]; then
   abort "! Unsupported platform: $ARCH"
 else
   ui_print "- Device platform: $ARCH"
@@ -115,6 +115,11 @@ if [ "$FLAVOR" == "zygisk" ]; then
       mv "$MODPATH/zygisk/liblspd.so" "$MODPATH/zygisk/x86_64.so"
     fi
   fi
+
+  if [ "$ARCH" = "riscv64" ]; then
+    extract "$ZIPFILE" "lib/riscv64/liblspd.so" "$MODPATH/zygisk" true
+    mv "$MODPATH/zygisk/liblspd.so" "$MODPATH/zygisk/riscv64.so"
+  fi
 fi
 
 if [ "$API" -ge 29 ]; then
@@ -145,12 +150,19 @@ if [ "$API" -ge 29 ]; then
       mv "$MODPATH/bin/dex2oat" "$MODPATH/bin/dex2oat64"
       mv "$MODPATH/bin/liboat_hook.so" "$MODPATH/bin/liboat_hook64.so"
     fi
+  elif [ "$ARCH" == "riscv64" ]; then
+    extract "$ZIPFILE" "bin/riscv64/dex2oat" "$MODPATH/bin" true
+    extract "$ZIPFILE" "bin/riscv64/liboat_hook.so" "$MODPATH/bin" true
+    mv "$MODPATH/bin/dex2oat" "$MODPATH/bin/dex2oat64"
+    mv "$MODPATH/bin/liboat_hook.so" "$MODPATH/bin/liboat_hook64.so"
   fi
 
   ui_print "- Patching binaries"
   DEV_PATH=$(tr -dc 'a-z0-9' < /dev/urandom | head -c 32)
   sed -i "s/5291374ceda0aef7c5d86cd2a4f6a3ac/$DEV_PATH/g" "$MODPATH/daemon.apk"
-  sed -i "s/5291374ceda0aef7c5d86cd2a4f6a3ac/$DEV_PATH/" "$MODPATH/bin/dex2oat32"
+  if [ "$ARCH" != "riscv64" ]; then
+    sed -i "s/5291374ceda0aef7c5d86cd2a4f6a3ac/$DEV_PATH/" "$MODPATH/bin/dex2oat32"
+  fi
   sed -i "s/5291374ceda0aef7c5d86cd2a4f6a3ac/$DEV_PATH/" "$MODPATH/bin/dex2oat64"
 else
   extract "$ZIPFILE" 'system.prop' "$MODPATH"

magisk-loader/magisk_module/customize.sh

@@ -35,17 +35,28 @@ check_magisk_version() {
 
 require_new_android() {
   ui_print "*********************************************************"
-  ui_print "! Unsupported Android version ${1} (below Oreo MR1)"
+  ui_print "! Unsupported Android version ${1} (below ${2})"
   ui_print "! Learn more from our GitHub"
   [ "$BOOTMODE" == "true" ] && am start -a android.intent.action.VIEW -d https://github.com/JingMatrix/LSPosed/#supported-versions
   abort    "*********************************************************"
 }
 
 check_android_version() {
-  if [ "$API" -ge 27 ]; then
+  local required_version
+  local min_api
+
+  if [ "$ARCH" == "riscv64" ]; then
+    required_version="Vanilla Ice Cream"
+    min_api=35
+  else
+    required_version="Oreo MR1"
+    min_api=27
+  fi
+
+  if [ "$API" -ge "$min_api" ]; then
     ui_print "- Android SDK version: $API"
   else
-    require_new_android "$API"
+    require_new_android "$API" "$required_version"
   fi
 }