Add loongarch64 support

Signed-off-by: zhaixiaojuan <[email protected]>

CMakeLists.txt

@@ -127,6 +127,12 @@ elseif(CMAKE_SYSTEM_PROCESSOR MATCHES "s390x")
     endif()
 elseif(CMAKE_SYSTEM_PROCESSOR MATCHES "riscv")
     set(ARCH "riscv")
+elseif(CMAKE_SYSTEM_PROCESSOR MATCHES "loongarch64")
+    set(ARCH "loongarch64")
+    set(ARCH_LOONGARCH64 ON)
+    if(${OQS_DIST_BUILD})
+        set(OQS_DIST_LOONGARCH64_BUILD ON)
+    endif()
 elseif(OQS_PERMIT_UNSUPPORTED_ARCHITECTURE)
     message(WARNING "Unknown or unsupported processor: " ${CMAKE_SYSTEM_PROCESSOR})
     message(WARNING "Compilation on an unsupported processor should only be used for testing, as it may result an insecure configuration, for example due to variable-time instructions leaking secret information.")

PLATFORMS.md

@@ -62,3 +62,4 @@ In this policy, the words "must" and "must not" specify absolute requirements th
 - x86 for Windows (Visual Studio Toolchain)
 - ppc641e for Ubuntu (Focal)
 - s390x for Ubuntu (Focal)
+- loongarch64 for Debian Linux (trixie)

src/common/common.c

@@ -206,6 +206,11 @@ static void set_available_cpu_extensions(void) {
 	/* mark that this function has been called */
 	cpu_ext_data[OQS_CPU_EXT_INIT] = 1;
 }
+#elif defined(OQS_DIST_LOONGARCH64_BUILD)
+static void set_available_cpu_extensions(void) {
+	/* mark that this function has been called */
+	cpu_ext_data[OQS_CPU_EXT_INIT] = 1;
+}
 #elif defined(OQS_DIST_BUILD)
 static void set_available_cpu_extensions(void) {
 }