includes/mkDerivedConstants.c

   1 /* --------------------------------------------------------------------------
   2  *
   3  * (c) The GHC Team, 1992-2004
   4  *
   5  * mkDerivedConstants.c
   6  *
   7  * Basically this is a C program that extracts information from the C
   8  * declarations in the header files (primarily struct field offsets)
   9  * and generates a header file that can be #included into non-C source
  10  * containing this information.
  11  *
  12  * ------------------------------------------------------------------------*/
  13
  14 #define IN_STG_CODE 0
  15
  16 /*
  17  * We need offsets of profiled things... better be careful that this
  18  * doesn't affect the offsets of anything else.
  19  */
  20 #define PROFILING
  21 #define THREADED_RTS
  22
  23 #include "Rts.h"
  24 #include "RtsFlags.h"
  25 #include "Storage.h"
  26 #include "Stable.h"
  27 #include "OSThreads.h"
  28 #include "Capability.h"
  29
  30 #include <stdio.h>
  31
  32 #define str(a,b) #a "_" #b
  33
  34 #define OFFSET(s_type, field) ((unsigned int)&(((s_type*)0)->field))
  35
  36 #if defined(GEN_HASKELL)
  37 #define def_offset(str, offset) \
  38     printf("oFFSET_" str " = %d::Int\n", offset);
  39 #else
  40 #define def_offset(str, offset) \
  41     printf("#define OFFSET_" str " %d\n", offset);
  42 #endif
  43
  44 #if defined(GEN_HASKELL)
  45 #define ctype(type) /* nothing */
  46 #else
  47 #define ctype(type) \
  48     printf("#define SIZEOF_" #type " %d\n", sizeof(type));
  49 #endif
  50
  51 #if defined(GEN_HASKELL)
  52 #define field_type_(str, s_type, field) /* nothing */
  53 #else
  54 #define field_type_(str, s_type, field) \
  55     printf("#define REP_" str " I"); \
  56     printf("%d\n", sizeof (__typeof__(((((s_type*)0)->field)))) * 8);
  57 #endif
  58
  59 #define field_type(s_type, field) \
  60     field_type_(str(s_type,field),s_type,field);
  61
  62 #define field_offset_(str, s_type, field) \
  63     def_offset(str, OFFSET(s_type,field));
  64
  65 #define field_offset(s_type, field) \
  66     field_offset_(str(s_type,field),s_type,field);
  67
  68 /* An access macro for use in C-- sources. */
  69 #define struct_field_macro(str) \
  70     printf("#define " str "(__ptr__)  REP_" str "[__ptr__+OFFSET_" str "]\n");
  71
  72 /* Outputs the byte offset and MachRep for a field */
  73 #define struct_field(s_type, field)             \
  74     field_offset(s_type, field);                \
  75     field_type(s_type, field);                  \
  76     struct_field_macro(str(s_type,field))
  77
  78 #define struct_field_(str, s_type, field)       \
  79     field_offset_(str, s_type, field);          \
  80     field_type_(str, s_type, field);            \
  81     struct_field_macro(str)
  82
  83 #if defined(GEN_HASKELL)
  84 #define def_size(str, size) \
  85     printf("sIZEOF_" str " = %d::Int\n", size);
  86 #else
  87 #define def_size(str, size) \
  88     printf("#define SIZEOF_" str " %d\n", size);
  89 #endif
  90
  91 #if defined(GEN_HASKELL)
  92 #define def_closure_size(str, size) /* nothing */
  93 #else
  94 #define def_closure_size(str, size) \
  95     printf("#define SIZEOF_" str " (SIZEOF_StgHeader+%d)\n", size);
  96 #endif
  97
  98 #define struct_size(s_type) \
  99     def_size(#s_type, sizeof(s_type));
 100
 101 /*
 102  * Size of a closure type, minus the header, named SIZEOF_<type>_NoHdr
 103  * Also, we #define SIZEOF_<type> to be the size of the whole closure for .cmm.
 104  */
 105 #define closure_size(s_type) \
 106     def_size(#s_type "_NoHdr", sizeof(s_type) - sizeof(StgHeader)); \
 107     def_closure_size(#s_type, sizeof(s_type) - sizeof(StgHeader));
 108
 109 #define thunk_size(s_type) \
 110     def_size(#s_type "_NoThunkHdr", sizeof(s_type) - sizeof(StgThunkHeader)); \
 111     closure_size(s_type)
 112
 113 /* An access macro for use in C-- sources. */
 114 #define closure_field_macro(str) \
 115     printf("#define " str "(__ptr__)  REP_" str "[__ptr__+SIZEOF_StgHeader+OFFSET_" str "]\n");
 116
 117 #define closure_field_offset_(str, s_type,field) \
 118     def_offset(str, OFFSET(s_type,field) - sizeof(StgHeader));
 119
 120 #define closure_field_offset(s_type,field) \
 121     closure_field_offset_(str(s_type,field),s_type,field)
 122
 123 #define closure_payload_macro(str) \
 124     printf("#define " str "(__ptr__,__ix__)  W_[__ptr__+SIZEOF_StgHeader+OFFSET_" str " + WDS(__ix__)]\n");
 125
 126 #define closure_payload(s_type,field) \
 127     closure_field_offset_(str(s_type,field),s_type,field); \
 128     closure_payload_macro(str(s_type,field));
 129
 130 /* Byte offset and MachRep for a closure field, minus the header */
 131 #define closure_field(s_type, field) \
 132     closure_field_offset(s_type,field) \
 133     field_type(s_type, field); \
 134     closure_field_macro(str(s_type,field))
 135
 136 /* Byte offset and MachRep for a closure field, minus the header */
 137 #define closure_field_(str, s_type, field) \
 138     closure_field_offset_(str,s_type,field) \
 139     field_type_(str, s_type, field); \
 140     closure_field_macro(str)
 141
 142 /* Byte offset for a TSO field, minus the header and variable prof bit. */
 143 #define tso_payload_offset(s_type, field) \
 144     def_offset(str(s_type,field), OFFSET(s_type,field) - sizeof(StgHeader) - sizeof(StgTSOProfInfo));
 145
 146 /* Full byte offset for a TSO field, for use from Cmm */
 147 #define tso_field_offset_macro(str) \
 148     printf("#define TSO_OFFSET_" str " (SIZEOF_StgHeader+SIZEOF_OPT_StgTSOProfInfo+SIZEOF_OPT_StgTSOParInfo+SIZEOF_OPT_StgTSOGranInfo+SIZEOF_OPT_StgTSODistInfo+OFFSET_" str ")\n");
 149
 150 #define tso_field_offset(s_type, field) \
 151     tso_payload_offset(s_type, field);          \
 152     tso_field_offset_macro(str(s_type,field));
 153
 154 #define tso_field_macro(str) \
 155     printf("#define " str "(__ptr__)  REP_" str "[__ptr__+TSO_OFFSET_" str "]\n")
 156 #define tso_field(s_type, field)                \
 157     field_type(s_type, field);                  \
 158     tso_field_offset(s_type,field);             \
 159     tso_field_macro(str(s_type,field))
 160
 161 #define opt_struct_size(s_type, option)                                 \
 162     printf("#ifdef " #option "\n");                                     \
 163     printf("#define SIZEOF_OPT_" #s_type " SIZEOF_" #s_type "\n");      \
 164     printf("#else\n");                                                  \
 165     printf("#define SIZEOF_OPT_" #s_type " 0\n");                       \
 166     printf("#endif\n\n");
 167
 168 #define FUN_OFFSET(sym) (OFFSET(Capability,f.sym) - OFFSET(Capability,r))
 169
 170
 171 int
 172 main(int argc, char *argv[])
 173 {
 174 #ifndef GEN_HASKELL
 175     printf("/* This file is created automatically.  Do not edit by hand.*/\n\n");
 176
 177     printf("#define STD_HDR_SIZE   %d\n", sizeofW(StgHeader) - sizeofW(StgProfHeader));
 178     /* grrr.. PROFILING is on so we need to subtract sizeofW(StgProfHeader) */
 179     printf("#define PROF_HDR_SIZE  %d\n", sizeofW(StgProfHeader));
 180     printf("#define GRAN_HDR_SIZE  %d\n", sizeofW(StgGranHeader));
 181
 182     printf("#define BLOCK_SIZE   %d\n", BLOCK_SIZE);
 183     printf("#define MBLOCK_SIZE   %d\n", MBLOCK_SIZE);
 184
 185     printf("\n\n");
 186 #endif
 187
 188     field_offset(StgRegTable, rR1);
 189     field_offset(StgRegTable, rR2);
 190     field_offset(StgRegTable, rR3);
 191     field_offset(StgRegTable, rR4);
 192     field_offset(StgRegTable, rR5);
 193     field_offset(StgRegTable, rR6);
 194     field_offset(StgRegTable, rR7);
 195     field_offset(StgRegTable, rR8);
 196     field_offset(StgRegTable, rR9);
 197     field_offset(StgRegTable, rR10);
 198     field_offset(StgRegTable, rF1);
 199     field_offset(StgRegTable, rF2);
 200     field_offset(StgRegTable, rF3);
 201     field_offset(StgRegTable, rF4);
 202     field_offset(StgRegTable, rD1);
 203     field_offset(StgRegTable, rD2);
 204     field_offset(StgRegTable, rL1);
 205     field_offset(StgRegTable, rSp);
 206     field_offset(StgRegTable, rSpLim);
 207     field_offset(StgRegTable, rHp);
 208     field_offset(StgRegTable, rHpLim);
 209     field_offset(StgRegTable, rCurrentTSO);
 210     field_offset(StgRegTable, rCurrentNursery);
 211     field_offset(StgRegTable, rHpAlloc);
 212     struct_field(StgRegTable, rRet);
 213
 214     // Needed for SMP builds
 215     field_offset(StgRegTable, rmp_tmp_w);
 216     field_offset(StgRegTable, rmp_tmp1);
 217     field_offset(StgRegTable, rmp_tmp2);
 218     field_offset(StgRegTable, rmp_result1);
 219     field_offset(StgRegTable, rmp_result2);
 220
 221     def_offset("stgGCEnter1", FUN_OFFSET(stgGCEnter1));
 222     def_offset("stgGCFun", FUN_OFFSET(stgGCFun));
 223
 224     field_offset(Capability, r);
 225     field_offset(Capability, lock);
 226     struct_field(Capability, mut_lists);
 227
 228     struct_field(bdescr, start);
 229     struct_field(bdescr, free);
 230     struct_field(bdescr, blocks);
 231     struct_field(bdescr, gen_no);
 232     struct_field(bdescr, link);
 233
 234     struct_size(generation);
 235     struct_field(generation, mut_list);
 236
 237     struct_size(CostCentreStack);
 238     struct_field(CostCentreStack, ccsID);
 239     struct_field(CostCentreStack, mem_alloc);
 240     struct_field(CostCentreStack, scc_count);
 241     struct_field(CostCentreStack, prevStack);
 242
 243     struct_field(CostCentre, ccID);
 244     struct_field(CostCentre, link);
 245
 246     struct_field(StgHeader, info);
 247     struct_field_("StgHeader_ccs",  StgHeader, prof.ccs);
 248     struct_field_("StgHeader_ldvw", StgHeader, prof.hp.ldvw);
 249
 250     struct_size(StgSMPThunkHeader);
 251
 252     closure_payload(StgClosure,payload);
 253
 254     struct_field(StgEntCounter, allocs);
 255     struct_field(StgEntCounter, registeredp);
 256     struct_field(StgEntCounter, link);
 257     struct_field(StgEntCounter, entry_count);
 258
 259     closure_size(StgUpdateFrame);
 260     closure_size(StgCatchFrame);
 261     closure_size(StgStopFrame);
 262
 263     closure_size(StgMutArrPtrs);
 264     closure_field(StgMutArrPtrs, ptrs);
 265
 266     closure_size(StgArrWords);
 267     closure_field(StgArrWords, words);
 268     closure_payload(StgArrWords, payload);
 269
 270     closure_field(StgTSO, link);
 271     closure_field(StgTSO, global_link);
 272     closure_field(StgTSO, what_next);
 273     closure_field(StgTSO, why_blocked);
 274     closure_field(StgTSO, block_info);
 275     closure_field(StgTSO, blocked_exceptions);
 276     closure_field(StgTSO, id);
 277     closure_field(StgTSO, cap);
 278     closure_field(StgTSO, saved_errno);
 279     closure_field(StgTSO, trec);
 280     closure_field(StgTSO, flags);
 281     closure_field_("StgTSO_CCCS", StgTSO, prof.CCCS);
 282     tso_field(StgTSO, sp);
 283     tso_field_offset(StgTSO, stack);
 284     tso_field(StgTSO, stack_size);
 285
 286     struct_size(StgTSOProfInfo);
 287     struct_size(StgTSOParInfo);
 288     struct_size(StgTSOGranInfo);
 289     struct_size(StgTSODistInfo);
 290
 291     opt_struct_size(StgTSOProfInfo,PROFILING);
 292     opt_struct_size(StgTSOParInfo,PAR);
 293     opt_struct_size(StgTSOGranInfo,GRAN);
 294     opt_struct_size(StgTSODistInfo,DIST);
 295
 296     closure_field(StgUpdateFrame, updatee);
 297
 298     closure_field(StgCatchFrame, handler);
 299     closure_field(StgCatchFrame, exceptions_blocked);
 300
 301     closure_size(StgPAP);
 302     closure_field(StgPAP, n_args);
 303     closure_field(StgPAP, fun);
 304     closure_field(StgPAP, arity);
 305     closure_payload(StgPAP, payload);
 306
 307     thunk_size(StgAP);
 308     closure_field(StgAP, n_args);
 309     closure_field(StgAP, fun);
 310     closure_payload(StgAP, payload);
 311
 312     thunk_size(StgAP_STACK);
 313     closure_field(StgAP_STACK, size);
 314     closure_field(StgAP_STACK, fun);
 315     closure_payload(StgAP_STACK, payload);
 316
 317     thunk_size(StgSelector);
 318
 319     closure_field(StgInd, indirectee);
 320
 321     closure_size(StgMutVar);
 322     closure_field(StgMutVar, var);
 323
 324     closure_size(StgAtomicallyFrame);
 325     closure_field(StgAtomicallyFrame, code);
 326     closure_field(StgAtomicallyFrame, next_invariant_to_check);
 327
 328     closure_field(StgInvariantCheckQueue, invariant);
 329     closure_field(StgInvariantCheckQueue, my_execution);
 330     closure_field(StgInvariantCheckQueue, next_queue_entry);
 331
 332     closure_field(StgAtomicInvariant, code);
 333
 334     closure_size(StgCatchSTMFrame);
 335     closure_field(StgCatchSTMFrame, handler);
 336     closure_field(StgCatchSTMFrame, code);
 337
 338     closure_size(StgCatchRetryFrame);
 339     closure_field(StgCatchRetryFrame, running_alt_code);
 340     closure_field(StgCatchRetryFrame, first_code);
 341     closure_field(StgCatchRetryFrame, alt_code);
 342
 343     closure_field(StgTVarWatchQueue, closure);
 344     closure_field(StgTVarWatchQueue, next_queue_entry);
 345     closure_field(StgTVarWatchQueue, prev_queue_entry);
 346
 347     closure_size(StgWeak);
 348     closure_field(StgWeak,link);
 349     closure_field(StgWeak,key);
 350     closure_field(StgWeak,value);
 351     closure_field(StgWeak,finalizer);
 352
 353     closure_size(StgDeadWeak);
 354     closure_field(StgDeadWeak,link);
 355
 356     closure_size(StgMVar);
 357     closure_field(StgMVar,head);
 358     closure_field(StgMVar,tail);
 359     closure_field(StgMVar,value);
 360
 361     closure_size(StgBCO);
 362     closure_field(StgBCO, instrs);
 363     closure_field(StgBCO, literals);
 364     closure_field(StgBCO, ptrs);
 365     closure_field(StgBCO, arity);
 366     closure_field(StgBCO, size);
 367     closure_payload(StgBCO, bitmap);
 368
 369     closure_size(StgStableName);
 370     closure_field(StgStableName,sn);
 371
 372     struct_field_("RtsFlags_ProfFlags_showCCSOnException",
 373                   RTS_FLAGS, ProfFlags.showCCSOnException);
 374     struct_field_("RtsFlags_DebugFlags_apply",
 375                   RTS_FLAGS, DebugFlags.apply);
 376     struct_field_("RtsFlags_DebugFlags_sanity",
 377                   RTS_FLAGS, DebugFlags.sanity);
 378     struct_field_("RtsFlags_DebugFlags_weak",
 379                   RTS_FLAGS, DebugFlags.weak);
 380     struct_field_("RtsFlags_GcFlags_initialStkSize",
 381                   RTS_FLAGS, GcFlags.initialStkSize);
 382     struct_field_("RtsFlags_MiscFlags_tickInterval",
 383                   RTS_FLAGS, MiscFlags.tickInterval);
 384
 385     struct_size(StgFunInfoExtraFwd);
 386     struct_field(StgFunInfoExtraFwd, slow_apply);
 387     struct_field(StgFunInfoExtraFwd, fun_type);
 388     struct_field(StgFunInfoExtraFwd, arity);
 389     struct_field_("StgFunInfoExtraFwd_bitmap", StgFunInfoExtraFwd, b.bitmap);
 390
 391     struct_size(StgFunInfoExtraRev);
 392     struct_field(StgFunInfoExtraRev, slow_apply_offset);
 393     struct_field(StgFunInfoExtraRev, fun_type);
 394     struct_field(StgFunInfoExtraRev, arity);
 395     struct_field_("StgFunInfoExtraRev_bitmap", StgFunInfoExtraRev, b.bitmap);
 396
 397     struct_field(StgLargeBitmap, size);
 398     field_offset(StgLargeBitmap, bitmap);
 399
 400     struct_size(snEntry);
 401     struct_field(snEntry,sn_obj);
 402     struct_field(snEntry,addr);
 403
 404 #ifdef mingw32_HOST_OS
 405     struct_size(StgAsyncIOResult);
 406     struct_field(StgAsyncIOResult, reqID);
 407     struct_field(StgAsyncIOResult, len);
 408     struct_field(StgAsyncIOResult, errCode);
 409 #endif
 410
 411     struct_size(MP_INT);
 412     struct_field(MP_INT,_mp_alloc);
 413     struct_field(MP_INT,_mp_size);
 414     struct_field(MP_INT,_mp_d);
 415
 416     ctype(mp_limb_t);
 417     return 0;
 418 }