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src/lj_bcdump.h - luajit-2.0-src

Macros defined

Source code

  1. /*
  2. ** Bytecode dump definitions.
  3. ** Copyright (C) 2005-2015 Mike Pall. See Copyright Notice in luajit.h
  4. */

  6. #ifndef _LJ_BCDUMP_H
  7. ‌#define _LJ_BCDUMP_H

  9. #include "lj_obj.h"
  10. #include "lj_lex.h"

  12. /* -- Bytecode dump format ------------------------------------------------ */

  14. /*
  15. ** dump   = header proto+ 0U
  16. ** header = ESC 'L' 'J' versionB flagsU [namelenU nameB*]
  17. ** proto  = lengthU pdata
  18. ** pdata  = phead bcinsW* uvdataH* kgc* knum* [debugB*]
  19. ** phead  = flagsB numparamsB framesizeB numuvB numkgcU numknU numbcU
  20. **          [debuglenU [firstlineU numlineU]]
  21. ** kgc    = kgctypeU { ktab | (loU hiU) | (rloU rhiU iloU ihiU) | strB* }
  22. ** knum   = intU0 | (loU1 hiU)
  23. ** ktab   = narrayU nhashU karray* khash*
  24. ** karray = ktabk
  25. ** khash  = ktabk ktabk
  26. ** ktabk  = ktabtypeU { intU | (loU hiU) | strB* }
  27. **
  28. ** B = 8 bit, H = 16 bit, W = 32 bit, U = ULEB128 of W, U0/U1 = ULEB128 of W+1
  29. */

  31. /* Bytecode dump header. */
  32. ‌#define BCDUMP_HEAD1                0x1b
  33. ‌#define BCDUMP_HEAD2                0x4c
  34. ‌#define BCDUMP_HEAD3                0x4a

  36. /* If you perform *any* kind of private modifications to the bytecode itself
  37. ** or to the dump format, you *must* set BCDUMP_VERSION to 0x80 or higher.
  38. */
  39. ‌#define BCDUMP_VERSION                2

  41. /* Compatibility flags. */
  42. ‌#define BCDUMP_F_BE                0x01
  43. ‌#define BCDUMP_F_STRIP                0x02
  44. ‌#define BCDUMP_F_FFI                0x04
  45. ‌#define BCDUMP_F_FR2                0x08

  47. ‌#define BCDUMP_F_KNOWN                (BCDUMP_F_FR2*2-1)

  49. /* Type codes for the GC constants of a prototype. Plus length for strings. */
  50. enum {
  51.   BCDUMP_KGC_CHILD, BCDUMP_KGC_TAB, BCDUMP_KGC_I64, BCDUMP_KGC_U64,
  52.   BCDUMP_KGC_COMPLEX, BCDUMP_KGC_STR
  53. };

  55. /* Type codes for the keys/values of a constant table. */
  56. enum {
  57.   BCDUMP_KTAB_NIL, BCDUMP_KTAB_FALSE, BCDUMP_KTAB_TRUE,
  58.   BCDUMP_KTAB_INT, BCDUMP_KTAB_NUM, BCDUMP_KTAB_STR
  59. };

  61. /* -- Bytecode reader/writer ---------------------------------------------- */

  63. LJ_FUNC int lj_bcwrite(lua_State *L, GCproto *pt, lua_Writer writer,
  64.                        void *data, int strip);
  65. LJ_FUNC GCproto *lj_bcread_proto(LexState *ls);
  66. LJ_FUNC GCproto *lj_bcread(LexState *ls);

  68. #endif

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