HelenOS sources
log_append 160 kernel/generic/src/log/log.c log_append((uint8_t *) &log_current_len, sizeof(size_t));
log_append 161 kernel/generic/src/log/log.c log_append((uint8_t *) &log_counter, sizeof(uint32_t));
log_append 164 kernel/generic/src/log/log.c log_append((uint8_t *) &fac32, sizeof(uint32_t));
log_append 165 kernel/generic/src/log/log.c log_append((uint8_t *) &lvl32, sizeof(uint32_t));
log_append 211 kernel/generic/src/log/log.c log_append((const uint8_t *)str, size);
log_append 231 kernel/generic/src/log/log.c log_append((const uint8_t *)buffer, buffer_offset);
HelenOS homepage, sources at GitHub