Add LoongArch64 support

Author: zhaixiaojuan

gen/ioctl/generate.sh

@@ -44,5 +44,8 @@ qemu-riscv64 -L /usr/riscv64-linux-gnu ./main.exe >> "$out"
 s390x-linux-gnu-gcc -Iinclude -c list.c $cflags
 s390x-linux-gnu-gcc main.c list.o -o main.exe $cflags
 qemu-s390x -L /usr/s390x-linux-gnu ./main.exe >> "$out"
+loongarch64-linux-gnu-gcc -Iinclude -c list.c $cflags
+loongarch64-linux-gnu-gcc main.c list.o -o main.exe $cflags
+./main.exe >> "$out"
 
 rm list.o main.exe

gen/ioctl/list.c

@@ -94,7 +94,7 @@ struct sockaddr {
 #include <linux/joystick.h>
 #include <linux/kd.h>
 #include <linux/kcov.h>
-#if !defined(__arm__) && !defined(__powerpc64__) && !defined(__riscv) // various errors
+#if !defined(__arm__) && !defined(__loongarch__) && !defined(__powerpc64__) && !defined(__riscv) // various errors
 #include <linux/kvm.h>
 #endif
 #include <linux/lirc.h>
@@ -509,7 +509,7 @@ void list(void) {
     IOCTL_REQUEST(ENI_SETMULT);
     IOCTL_REQUEST(RIO_GET_EVENT_MASK);
     IOCTL_REQUEST(LIRC_GET_MAX_TIMEOUT);
-#if !defined(__arm__) && !defined(__powerpc64__) && !defined(__riscv)
+#if !defined(__arm__) && !defined(__loongarch__) && !defined(__powerpc64__) && !defined(__riscv)
 #if 0 // needs `struct kvm_cpuid2`
     IOCTL_REQUEST(KVM_GET_SUPPORTED_CPUID);
 #endif

gen/ioctl/main.c

@@ -43,6 +43,8 @@ int main(void) {
     printf("#if defined(__riscv) && __riscv_xlen == 64\n");
 #elif defined(__s390x__)
     printf("#if defined(__s390x__)\n");
+#elif defined(__loongarch__)
+    printf("#ifdef __loongarch__\n");
 #else
 #error "unimplemented architecture"
 #endif