Added ARM errata mitigations

Reworked #189

.github/workflows/c-cpp.yml

@@ -19,7 +19,7 @@ jobs:
       matrix:
         config:
           - {arch: x86_64, flags: "-flto=2 -fuse-linker-plugin -ffunction-sections -Wno-error=inline"}
-          - {arch: aarch64, flags: "-flto=2 -fuse-linker-plugin -ffunction-sections -Wno-error=inline"}
+          - {arch: aarch64, flags: "-flto=2 -fuse-linker-plugin -ffunction-sections -Wno-error=inline -mfix-cortex-a53-835769 -mfix-cortex-a53-843419"}
 
     steps:
     - name: Setup Alpine Linux
@@ -68,7 +68,7 @@ jobs:
       run: |
         mkdir build
         cd build
-        cmake ..  -DCMAKE_C_FLAGS='${{ matrix.config.flags }} -Wl,-s -Wl,--gc-sections' -DCMAKE_CXX_FLAGS='${{ matrix.config.flags }} -Wl,-s -Wl,--gc-sections' -DSTATIC_BINARY=ON
+        cmake ..  -DCMAKE_C_FLAGS='${{ matrix.config.flags }} -Wl,-s -Wl,--gc-sections' -DCMAKE_CXX_FLAGS='${{ matrix.config.flags }} -Wl,-s -Wl,--gc-sections' -DSTATIC_BINARY=ON -DARCH_ID=${{ matrix.config.arch }}
         make -j$(nproc)
 
     - name: Run RandomX tests
@@ -83,7 +83,7 @@ jobs:
         cd tests
         mkdir build
         cd build
-        cmake ..  -DCMAKE_C_FLAGS='${{ matrix.config.flags }} -Wl,-s -Wl,--gc-sections' -DCMAKE_CXX_FLAGS='${{ matrix.config.flags }} -Wl,-s -Wl,--gc-sections' -DSTATIC_LIBS=ON
+        cmake ..  -DCMAKE_C_FLAGS='${{ matrix.config.flags }} -Wl,-s -Wl,--gc-sections' -DCMAKE_CXX_FLAGS='${{ matrix.config.flags }} -Wl,-s -Wl,--gc-sections' -DSTATIC_LIBS=ON -DARCH_ID=${{ matrix.config.arch }}
         make -j$(nproc)
 
     - name: Run tests
@@ -246,8 +246,8 @@ jobs:
     strategy:
       matrix:
         config:
-          - {os: ubuntu-20.04, flags: "-flto=2 -fuse-linker-plugin -ffunction-sections"}
-          - {os: ubuntu-22.04, flags: "-flto=2 -fuse-linker-plugin -ffunction-sections"}
+          - {os: ubuntu-20.04, flags: "-flto=2 -fuse-linker-plugin -ffunction-sections -mfix-cortex-a53-835769 -mfix-cortex-a53-843419"}
+          - {os: ubuntu-22.04, flags: "-flto=2 -fuse-linker-plugin -ffunction-sections -mfix-cortex-a53-835769 -mfix-cortex-a53-843419"}
 
     steps:
     - name: Install dependencies

CMakeLists.txt

@@ -359,3 +359,10 @@ if (STATIC_BINARY OR STATIC_LIBS)
 else()
 	target_link_libraries(${CMAKE_PROJECT_NAME} debug ${ZMQ_LIBRARY_DEBUG} debug ${UV_LIBRARY_DEBUG} debug ${CURL_LIBRARY_DEBUG} optimized ${ZMQ_LIBRARY} optimized ${UV_LIBRARY} optimized ${CURL_LIBRARY} ${LIBS})
 endif()
+
+message(STATUS "Summary of build options:
+    C compiler:      ${CMAKE_C_COMPILER} (${CMAKE_C_COMPILER_ID})
+    CXX compiler:    ${CMAKE_CXX_COMPILER} (${CMAKE_CXX_COMPILER_ID})
+    C_FLAGS:         ${CMAKE_C_FLAGS}
+    CXX_FLAGS:       ${CMAKE_CXX_FLAGS}
+")

cmake/flags.cmake

@@ -5,9 +5,24 @@ set(CMAKE_CXX_STANDARD 14)
 set(CMAKE_C_STANDARD 99)
 set(CMAKE_C_STANDARD_REQUIRED ON)
 
+if(NOT ARCH_ID)
+  if(CMAKE_SYSTEM_PROCESSOR STREQUAL "")
+    set(CMAKE_SYSTEM_PROCESSOR ${CMAKE_HOST_SYSTEM_PROCESSOR})
+  endif()
+  string(TOLOWER "${CMAKE_SYSTEM_PROCESSOR}" ARCH_ID)
+endif()
+
+if (ARCH_ID MATCHES "^(aarch64|arm64|armv8-a)$")
+	set(ARMv8 1)
+endif()
+
 if (CMAKE_CXX_COMPILER_ID MATCHES GNU)
 	set(GENERAL_FLAGS "-pthread")
 
+	if (ARMv8)
+		set(GENERAL_FLAGS "${GENERAL_FLAGS} -mfix-cortex-a53-835769 -mfix-cortex-a53-843419")
+	endif()
+
 	if (DEV_WITH_TSAN)
 		set(GENERAL_FLAGS "${GENERAL_FLAGS} -fno-omit-frame-pointer -fsanitize=thread")
 	endif()
@@ -69,11 +84,16 @@ elseif (CMAKE_CXX_COMPILER_ID MATCHES MSVC)
 	set(CMAKE_EXE_LINKER_FLAGS_RELEASE "${CMAKE_EXE_LINKER_FLAGS_RELEASE} /LTCG")
 elseif (CMAKE_CXX_COMPILER_ID MATCHES Clang)
 	if (WIN32)
+		set(GENERAL_FLAGS "")
 		set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} -static")
 	else()
 		set(GENERAL_FLAGS "-pthread")
 	endif()
 
+	if (ARMv8)
+		set(GENERAL_FLAGS "${GENERAL_FLAGS} -mfix-cortex-a53-835769")
+	endif()
+
 	set(WARNING_FLAGS "-Wall -Wextra -Wno-undefined-internal -Wunreachable-code-aggressive -Wmissing-prototypes -Wmissing-variable-declarations -Werror")
 
 	if (DEV_WITH_MSAN)