feat: add lab-rv32i-freertos-mutex card

src/common/memops.c

@@ -0,0 +1,34 @@
+#include <stddef.h>
+
+void * memcpy( void * destination, const void * source, size_t count )
+{
+    unsigned char * out = ( unsigned char * ) destination;
+    const unsigned char * in = ( const unsigned char * ) source;
+
+    for( size_t index = 0; index < count; ++index )
+    {
+        out[ index ] = in[ index ];
+    }
+    return destination;
+}
+void * memset( void * destination, int value, size_t count )
+{
+    unsigned char * out = ( unsigned char * ) destination;
+
+    for( size_t index = 0; index < count; ++index )
+    {
+        out[ index ] = ( unsigned char ) value;
+    }
+    return destination;
+}
+
+size_t strlen( const char * text )
+{
+    size_t length = 0;
+
+    while( text[ length ] != '\0' )
+    {
+        ++length;
+    }
+    return length;
+}