source/libs/luajit/LuaJIT-src/src/lj_vm.h

   1 /*
   2 ** Assembler VM interface definitions.
   3 ** Copyright (C) 2005-2015 Mike Pall. See Copyright Notice in luajit.h
   4 */
   5
   6 #ifndef _LJ_VM_H
   7 #define _LJ_VM_H
   8
   9 #include "lj_obj.h"
  10
  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
  25
  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
  40
  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);
  47
  48 /* Trace exit handling. */
  49 LJ_ASMF void lj_vm_exit_handler(void);
  50 LJ_ASMF void lj_vm_exit_interp(void);
  51
  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
  69
  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
  98
  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. */
 107
 108 /* Start of the ASM code. */
 109 LJ_ASMF char lj_vm_asm_begin[];
 110
 111 /* Bytecode offsets are relative to lj_vm_asm_begin. */
 112 #define makeasmfunc(ofs)        ((ASMFunction)(lj_vm_asm_begin + (ofs)))
 113
 114 #endif