DEBUG_BUF_SIZE
#define DEBUG_BUF_MASK (DEBUG_BUF_SIZE - 1)
u32 buf[DEBUG_BUF_SIZE];
u32 buf[DEBUG_BUF_SIZE];
size_t delta = DEBUG_BUF_SIZE - debug_data_ptr->tail;
size_t delta = DEBUG_BUF_SIZE - debug_data_ptr->tail;
size_t delta = DEBUG_BUF_SIZE - debug_data_ptr->tail;