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src/lj_vm.h - luajit-2.0-src

Global variables defined

Data types defined

Macros defined

Source code

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

  6. #ifndef _LJ_VM_H
  7. ‌#define _LJ_VM_H

  9. #include "lj_obj.h"

  11. /* Entry points for ASM parts of VM. */
  12. LJ_ASMF void lj_vm_call(lua_State *L, TValue *base, int nres1);
  13. LJ_ASMF int lj_vm_pcall(lua_State *L, TValue *base, int nres1, ptrdiff_t ef);
  14. ‌typedef TValue *(*lua_CPFunction)(lua_State *L, lua_CFunction func, void *ud);
  15. LJ_ASMF int lj_vm_cpcall(lua_State *L, lua_CFunction func, void *ud,
  16.                          lua_CPFunction cp);
  17. LJ_ASMF int lj_vm_resume(lua_State *L, TValue *base, int nres1, ptrdiff_t ef);
  18. LJ_ASMF_NORET void LJ_FASTCALL lj_vm_unwind_c(void *cframe, int errcode);
  19. LJ_ASMF_NORET void LJ_FASTCALL lj_vm_unwind_ff(void *cframe);
  20. LJ_ASMF void lj_vm_unwind_c_eh(void);
  21. LJ_ASMF void lj_vm_unwind_ff_eh(void);
  22. #if LJ_TARGET_X86ORX64
  23. LJ_ASMF void lj_vm_unwind_rethrow(void);
  24. #endif

  26. /* Miscellaneous functions. */
  27. #if LJ_TARGET_X86ORX64
  28. LJ_ASMF int lj_vm_cpuid(uint32_t f, uint32_t res[4]);
  29. #endif
  30. #if LJ_TARGET_PPC
  31. void lj_vm_cachesync(void *start, void *end);
  32. #endif
  33. LJ_ASMF double lj_vm_foldarith(double x, double y, int op);
  34. #if LJ_HASJIT
  35. LJ_ASMF double lj_vm_foldfpm(double x, int op);
  36. #endif
  37. #if !LJ_ARCH_HASFPU
  38. /* Declared in lj_obj.h: LJ_ASMF int32_t lj_vm_tobit(double x); */
  39. #endif

  41. /* Dispatch targets for recording and hooks. */
  42. LJ_ASMF void lj_vm_record(void);
  43. LJ_ASMF void lj_vm_inshook(void);
  44. LJ_ASMF void lj_vm_rethook(void);
  45. LJ_ASMF void lj_vm_callhook(void);
  46. LJ_ASMF void lj_vm_profhook(void);

  48. /* Trace exit handling. */
  49. LJ_ASMF void lj_vm_exit_handler(void);
  50. LJ_ASMF void lj_vm_exit_interp(void);

  52. /* Internal math helper functions. */
  53. #if LJ_TARGET_PPC || LJ_TARGET_ARM64
  54. ‌#define lj_vm_floor        floor
  55. ‌#define lj_vm_ceil        ceil
  56. #else
  57. LJ_ASMF double lj_vm_floor(double);
  58. LJ_ASMF double lj_vm_ceil(double);
  59. #if LJ_TARGET_ARM
  60. LJ_ASMF double lj_vm_floor_sf(double);
  61. LJ_ASMF double lj_vm_ceil_sf(double);
  62. #endif
  63. #endif
  64. #ifdef LUAJIT_NO_LOG2
  65. LJ_ASMF double lj_vm_log2(double);
  66. #else
  67. ‌#define lj_vm_log2        log2
  68. #endif

  70. #if LJ_HASJIT
  71. #if LJ_TARGET_X86ORX64
  72. LJ_ASMF void lj_vm_floor_sse(void);
  73. LJ_ASMF void lj_vm_ceil_sse(void);
  74. LJ_ASMF void lj_vm_trunc_sse(void);
  75. LJ_ASMF void lj_vm_powi_sse(void);
  76. ‌#define lj_vm_powi        NULL
  77. #else
  78. LJ_ASMF double lj_vm_powi(double, int32_t);
  79. #endif
  80. #if LJ_TARGET_PPC || LJ_TARGET_ARM64
  81. ‌#define lj_vm_trunc        trunc
  82. #else
  83. LJ_ASMF double lj_vm_trunc(double);
  84. #if LJ_TARGET_ARM
  85. LJ_ASMF double lj_vm_trunc_sf(double);
  86. #endif
  87. #endif
  88. #ifdef LUAJIT_NO_EXP2
  89. LJ_ASMF double lj_vm_exp2(double);
  90. #else
  91. ‌#define lj_vm_exp2        exp2
  92. #endif
  93. LJ_ASMF int32_t LJ_FASTCALL lj_vm_modi(int32_t, int32_t);
  94. #if LJ_HASFFI
  95. LJ_ASMF int lj_vm_errno(void);
  96. #endif
  97. #endif

  99. /* Continuations for metamethods. */
  100. LJ_ASMF void lj_cont_cat(void);  /* Continue with concatenation. */
  101. LJ_ASMF void lj_cont_ra(void);  /* Store result in RA from instruction. */
  102. LJ_ASMF void lj_cont_nop(void);  /* Do nothing, just continue execution. */
  103. LJ_ASMF void lj_cont_condt(void);  /* Branch if result is true. */
  104. LJ_ASMF void lj_cont_condf(void);  /* Branch if result is false. */
  105. LJ_ASMF void lj_cont_hook(void);  /* Continue from hook yield. */
  106. LJ_ASMF void lj_cont_stitch(void);  /* Trace stitching. */

  108. /* Start of the ASM code. */
  109. ‌LJ_ASMF char lj_vm_asm_begin[];

  111. /* Bytecode offsets are relative to lj_vm_asm_begin. */
  112. ‌#define makeasmfunc(ofs)        ((ASMFunction)(lj_vm_asm_begin + (ofs)))

  114. #endif

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