diff --git a/sys/driver_info.h b/sys/driver_info.h
new file mode 100644
index 0000000..336975c
--- /dev/null
+++ b/sys/driver_info.h
@@ -0,0 +1,237 @@
+#ifndef LPC_DRIVER_INFO_H_
+#define LPC_DRIVER_INFO_H_
+
+/* Definition of argument values for driver_info()
+ */
+
+#include "configuration.h"
+
+/* Driver Environment */
+#define DI_BOOT_TIME                                          -1
+
+/* LPC Runtime status */
+#define DI_CURRENT_RUNTIME_LIMITS                            -10
+#define DI_EVAL_NUMBER                                       -11
+
+/* Network configuration */
+#define DI_MUD_PORTS                                         -20
+#define DI_UDP_PORT                                          -21
+
+/* Memory management */
+#define DI_MEMORY_RESERVE_USER                               -30
+#define DI_MEMORY_RESERVE_MASTER                             -31
+#define DI_MEMORY_RESERVE_SYSTEM                             -32
+
+/* Traces */
+#define DI_TRACE_CURRENT                                     -40
+#define DI_TRACE_CURRENT_DEPTH                               -41
+#define DI_TRACE_CURRENT_AS_STRING                           -42
+#define DI_TRACE_LAST_ERROR                                  -43
+#define DI_TRACE_LAST_ERROR_AS_STRING                        -44
+#define DI_TRACE_LAST_UNCAUGHT_ERROR                         -45
+#define DI_TRACE_LAST_UNCAUGHT_ERROR_AS_STRING               -46
+
+/* LPC Runtime statistics */
+#define DI_NUM_FUNCTION_NAME_CALLS                          -100
+#define DI_NUM_FUNCTION_NAME_CALL_HITS                      -101
+#define DI_NUM_FUNCTION_NAME_CALL_MISSES                    -102
+
+#define DI_NUM_OBJECTS_LAST_PROCESSED                       -103
+
+#define DI_NUM_HEARTBEAT_TOTAL_CYCLES                       -104
+#define DI_NUM_HEARTBEAT_ACTIVE_CYCLES                      -105
+#define DI_NUM_HEARTBEATS_LAST_PROCESSED                    -106
+
+#define DI_NUM_STRING_TABLE_STRINGS_ADDED                   -110
+#define DI_NUM_STRING_TABLE_STRINGS_REMOVED                 -111
+#define DI_NUM_STRING_TABLE_LOOKUPS_BY_VALUE                -112
+#define DI_NUM_STRING_TABLE_LOOKUPS_BY_INDEX                -113
+#define DI_NUM_STRING_TABLE_LOOKUP_STEPS_BY_VALUE           -114
+#define DI_NUM_STRING_TABLE_LOOKUP_STEPS_BY_INDEX           -115
+#define DI_NUM_STRING_TABLE_HITS_BY_VALUE                   -116
+#define DI_NUM_STRING_TABLE_HITS_BY_INDEX                   -117
+#define DI_NUM_STRING_TABLE_COLLISIONS                      -118
+
+#define DI_NUM_REGEX_LOOKUPS                                -120
+#define DI_NUM_REGEX_LOOKUP_HITS                            -121
+#define DI_NUM_REGEX_LOOKUP_MISSES                          -122
+#define DI_NUM_REGEX_LOOKUP_COLLISIONS                      -123
+
+/* Network statistics */
+#define DI_NUM_MESSAGES_OUT                                 -200
+#define DI_NUM_PACKETS_OUT                                  -201
+#define DI_NUM_PACKETS_IN                                   -202
+#define DI_SIZE_PACKETS_OUT                                 -203
+#define DI_SIZE_PACKETS_IN                                  -204
+
+/* Load */
+#define DI_LOAD_AVERAGE_COMMANDS                            -300
+#define DI_LOAD_AVERAGE_LINES                               -301
+#define DI_LOAD_AVERAGE_PROCESSED_OBJECTS                   -302
+#define DI_LOAD_AVERAGE_PROCESSED_OBJECTS_RELATIVE          -303
+#define DI_LOAD_AVERAGE_PROCESSED_HEARTBEATS_RELATIVE       -304
+
+/* Memory use statistics */
+#define DI_NUM_ACTIONS                                      -400
+#define DI_NUM_CALLOUTS                                     -401
+#define DI_NUM_HEARTBEATS                                   -402
+#define DI_NUM_SHADOWS                                      -403
+#define DI_NUM_OBJECTS                                      -404
+#define DI_NUM_OBJECTS_SWAPPED                              -405
+#define DI_NUM_OBJECTS_IN_LIST                              -406
+#define DI_NUM_OBJECTS_IN_TABLE                             -407
+#define DI_NUM_OBJECTS_DESTRUCTED                           -408
+#define DI_NUM_OBJECTS_NEWLY_DESTRUCTED                     -409
+#define DI_NUM_OBJECT_TABLE_SLOTS                           -410
+#define DI_NUM_PROGS                                        -411
+#define DI_NUM_PROGS_SWAPPED                                -412
+#define DI_NUM_PROGS_UNSWAPPED                              -413
+#define DI_NUM_ARRAYS                                       -414
+#define DI_NUM_MAPPINGS                                     -415
+#define DI_NUM_MAPPINGS_CLEAN                               -416
+#define DI_NUM_MAPPINGS_HASH                                -417
+#define DI_NUM_MAPPINGS_HYBRID                              -418
+#define DI_NUM_STRUCTS                                      -419
+#define DI_NUM_STRUCT_TYPES                                 -420
+#define DI_NUM_VIRTUAL_STRINGS                              -421
+#define DI_NUM_STRINGS                                      -422
+#define DI_NUM_STRINGS_TABLED                               -423
+#define DI_NUM_STRINGS_UNTABLED                             -424
+#define DI_NUM_STRING_TABLE_SLOTS                           -425
+#define DI_NUM_STRING_TABLE_SLOTS_USED                      -426
+#define DI_NUM_REGEX                                        -427
+#define DI_NUM_REGEX_TABLE_SLOTS                            -428
+
+#define DI_SIZE_ACTIONS                                     -450
+#define DI_SIZE_CALLOUTS                                    -451
+#define DI_SIZE_HEARTBEATS                                  -452
+#define DI_SIZE_SHADOWS                                     -453
+#define DI_SIZE_OBJECTS                                     -454
+#define DI_SIZE_OBJECTS_SWAPPED                             -455
+#define DI_SIZE_OBJECT_TABLE                                -456
+#define DI_SIZE_PROGS                                       -457
+#define DI_SIZE_PROGS_SWAPPED                               -458
+#define DI_SIZE_PROGS_UNSWAPPED                             -459
+#define DI_SIZE_ARRAYS                                      -460
+#define DI_SIZE_MAPPINGS                                    -461
+#define DI_SIZE_STRUCTS                                     -462
+#define DI_SIZE_STRUCT_TYPES                                -463
+#define DI_SIZE_STRINGS                                     -464
+#define DI_SIZE_STRINGS_TABLED                              -465
+#define DI_SIZE_STRINGS_UNTABLED                            -466
+#define DI_SIZE_STRING_TABLE                                -467
+#define DI_SIZE_STRING_OVERHEAD                             -468
+#define DI_SIZE_REGEX                                       -469
+#define DI_SIZE_BUFFER_FILE                                 -470
+#define DI_SIZE_BUFFER_SWAP                                 -471
+
+/* Memory swapper statistics */
+#define DI_NUM_SWAP_BLOCKS                                  -500
+#define DI_NUM_SWAP_BLOCKS_FREE                             -501
+#define DI_NUM_SWAP_BLOCKS_REUSE_LOOKUPS                    -502
+#define DI_NUM_SWAP_BLOCKS_REUSE_LOOKUP_STEPS               -503
+#define DI_NUM_SWAP_BLOCKS_FREE_LOOKUPS                     -505
+#define DI_NUM_SWAP_BLOCKS_FREE_LOOKUP_STEPS                -506
+#define DI_SIZE_SWAP_BLOCKS                                 -507
+#define DI_SIZE_SWAP_BLOCKS_FREE                            -508
+#define DI_SIZE_SWAP_BLOCKS_REUSED                          -509
+#define DI_SWAP_RECYCLE_PHASE                               -510
+
+/* Memory allocator statistics */
+#define DI_MEMORY_ALLOCATOR_NAME                            -600
+
+#define DI_NUM_SYS_ALLOCATED_BLOCKS                         -610
+#define DI_NUM_LARGE_BLOCKS_ALLOCATED                       -611
+#define DI_NUM_LARGE_BLOCKS_FREE                            -612
+#define DI_NUM_LARGE_BLOCKS_WASTE                           -613
+#define DI_NUM_SMALL_BLOCKS_ALLOCATED                       -614
+#define DI_NUM_SMALL_BLOCKS_FREE                            -615
+#define DI_NUM_SMALL_BLOCKS_WASTE                           -616
+#define DI_NUM_SMALL_BLOCK_CHUNKS                           -617
+#define DI_NUM_UNMANAGED_BLOCKS                             -618
+#define DI_NUM_FREE_BLOCKS_AVL_NODES                        -619
+
+#define DI_SIZE_SYS_ALLOCATED_BLOCKS                        -630
+#define DI_SIZE_LARGE_BLOCKS_ALLOCATED                      -631
+#define DI_SIZE_LARGE_BLOCKS_FREE                           -632
+#define DI_SIZE_LARGE_BLOCKS_WASTE                          -633
+#define DI_SIZE_LARGE_BLOCK_OVERHEAD                        -634
+#define DI_SIZE_SMALL_BLOCKS_ALLOCATED                      -635
+#define DI_SIZE_SMALL_BLOCKS_FREE                           -636
+#define DI_SIZE_SMALL_BLOCKS_WASTE                          -637
+#define DI_SIZE_SMALL_BLOCK_OVERHEAD                        -638
+#define DI_SIZE_SMALL_BLOCK_CHUNKS                          -639
+#define DI_SIZE_UNMANAGED_BLOCKS                            -640
+#define DI_SIZE_MEMORY_USED                                 -641
+#define DI_SIZE_MEMORY_UNUSED                               -642
+#define DI_SIZE_MEMORY_OVERHEAD                             -643
+
+#define DI_NUM_INCREMENT_SIZE_CALLS                         -650
+#define DI_NUM_INCREMENT_SIZE_CALL_SUCCESSES                -651
+#define DI_SIZE_INCREMENT_SIZE_CALL_DIFFS                   -652
+#define DI_NUM_REPLACEMENT_MALLOC_CALLS                     -653
+#define DI_SIZE_REPLACEMENT_MALLOC_CALLS                    -654
+#define DI_NUM_MEMORY_DEFRAGMENTATION_CALLS_FULL            -655
+#define DI_NUM_MEMORY_DEFRAGMENTATION_CALLS_TARGETED        -656
+#define DI_NUM_MEMORY_DEFRAGMENTATION_CALL_TARGET_HITS      -657
+#define DI_NUM_MEMORY_DEFRAGMENTATION_BLOCKS_INSPECTED      -658
+#define DI_NUM_MEMORY_DEFRAGMENTATION_BLOCKS_MERGED         -659
+#define DI_NUM_MEMORY_DEFRAGMENTATION_BLOCKS_RESULTING      -660
+
+#define DI_MEMORY_EXTENDED_STATISTICS                       -670
+
+/* Status texts */
+#define DI_STATUS_TEXT_MEMORY                               -700
+#define DI_STATUS_TEXT_TABLES                               -701
+#define DI_STATUS_TEXT_SWAP                                 -702
+#define DI_STATUS_TEXT_MALLOC                               -703
+#define DI_STATUS_TEXT_MALLOC_EXTENDED                      -704
+
+/* Indices into the subarrays of DI_MEMORY_EXTENDED_STATISTICS (if given) */
+
+#define DIM_ES_MAX_ALLOC   0
+#define DIM_ES_CUR_ALLOC   1
+#define DIM_ES_MAX_FREE    2
+#define DIM_ES_CUR_FREE    3
+#define DIM_ES_AVG_XALLOC  4
+#define DIM_ES_AVG_XFREE   5
+#define DIM_ES_FULL_SLABS  6
+#define DIM_ES_FREE_SLABS  7
+#define DIM_ES_TOTAL_SLABS 8
+
+#define DIM_ES_MAX  9
+
+
+/* Definition of argument values for dump_driver_info()
+ */
+
+#define DDI_OBJECTS                     0
+#define DDI_OBJECTS_DESTRUCTED          1
+#define DDI_OPCODES                     2
+#define DDI_MEMORY                      3
+
+/* Indices into the subarrays resulting from driver_info(DI_TRACE_*)
+ */
+
+#define TRACE_TYPE    0
+#define TRACE_NAME    1
+#define TRACE_PROGRAM 2
+#define TRACE_OBJECT  3
+#define TRACE_LOC     4
+#ifdef __EVAL_COST_TRACE__
+#define TRACE_EVALCOST 5
+
+#define TRACE_MAX     6
+#else
+#define TRACE_MAX     5
+#endif
+
+/* Values for entry TRACE_TYPE */
+
+#define TRACE_TYPE_SYMBOL  0
+#define TRACE_TYPE_SEFUN   1
+#define TRACE_TYPE_EFUN    2
+#define TRACE_TYPE_LAMBDA  3
+#define TRACE_TYPE_LFUN    4
+
+#endif /* LPC_DRIVER_INFO_H_ */