lj_vm.h (3640B)
1 /* 2 ** Assembler VM interface definitions. 3 ** Copyright (C) 2005-2016 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 #if LJ_ABI_WIN && LJ_TARGET_X86 21 LJ_ASMF_NORET void LJ_FASTCALL lj_vm_rtlunwind(void *cframe, void *excptrec, 22 void *unwinder, int errcode); 23 #endif 24 LJ_ASMF void lj_vm_unwind_c_eh(void); 25 LJ_ASMF void lj_vm_unwind_ff_eh(void); 26 #if LJ_TARGET_X86ORX64 27 LJ_ASMF void lj_vm_unwind_rethrow(void); 28 #endif 29 30 /* Miscellaneous functions. */ 31 #if LJ_TARGET_X86ORX64 32 LJ_ASMF int lj_vm_cpuid(uint32_t f, uint32_t res[4]); 33 #endif 34 #if LJ_TARGET_PPC 35 void lj_vm_cachesync(void *start, void *end); 36 #endif 37 LJ_ASMF double lj_vm_foldarith(double x, double y, int op); 38 #if LJ_HASJIT 39 LJ_ASMF double lj_vm_foldfpm(double x, int op); 40 #endif 41 #if !LJ_ARCH_HASFPU 42 /* Declared in lj_obj.h: LJ_ASMF int32_t lj_vm_tobit(double x); */ 43 #endif 44 45 /* Dispatch targets for recording and hooks. */ 46 LJ_ASMF void lj_vm_record(void); 47 LJ_ASMF void lj_vm_inshook(void); 48 LJ_ASMF void lj_vm_rethook(void); 49 LJ_ASMF void lj_vm_callhook(void); 50 LJ_ASMF void lj_vm_profhook(void); 51 52 /* Trace exit handling. */ 53 LJ_ASMF void lj_vm_exit_handler(void); 54 LJ_ASMF void lj_vm_exit_interp(void); 55 56 /* Internal math helper functions. */ 57 #if LJ_TARGET_PPC || LJ_TARGET_ARM64 || (LJ_TARGET_MIPS && LJ_ABI_SOFTFP) 58 #define lj_vm_floor floor 59 #define lj_vm_ceil ceil 60 #else 61 LJ_ASMF double lj_vm_floor(double); 62 LJ_ASMF double lj_vm_ceil(double); 63 #if LJ_TARGET_ARM 64 LJ_ASMF double lj_vm_floor_sf(double); 65 LJ_ASMF double lj_vm_ceil_sf(double); 66 #endif 67 #endif 68 #ifdef LUAJIT_NO_LOG2 69 LJ_ASMF double lj_vm_log2(double); 70 #else 71 #define lj_vm_log2 log2 72 #endif 73 #if !(defined(_LJ_DISPATCH_H) && LJ_TARGET_MIPS) 74 LJ_ASMF int32_t LJ_FASTCALL lj_vm_modi(int32_t, int32_t); 75 #endif 76 77 #if LJ_HASJIT 78 #if LJ_TARGET_X86ORX64 79 LJ_ASMF void lj_vm_floor_sse(void); 80 LJ_ASMF void lj_vm_ceil_sse(void); 81 LJ_ASMF void lj_vm_trunc_sse(void); 82 LJ_ASMF void lj_vm_powi_sse(void); 83 #define lj_vm_powi NULL 84 #else 85 LJ_ASMF double lj_vm_powi(double, int32_t); 86 #endif 87 #if LJ_TARGET_PPC || LJ_TARGET_ARM64 88 #define lj_vm_trunc trunc 89 #else 90 LJ_ASMF double lj_vm_trunc(double); 91 #if LJ_TARGET_ARM 92 LJ_ASMF double lj_vm_trunc_sf(double); 93 #endif 94 #endif 95 #ifdef LUAJIT_NO_EXP2 96 LJ_ASMF double lj_vm_exp2(double); 97 #else 98 #define lj_vm_exp2 exp2 99 #endif 100 #if LJ_HASFFI 101 LJ_ASMF int lj_vm_errno(void); 102 #endif 103 #endif 104 105 /* Continuations for metamethods. */ 106 LJ_ASMF void lj_cont_cat(void); /* Continue with concatenation. */ 107 LJ_ASMF void lj_cont_ra(void); /* Store result in RA from instruction. */ 108 LJ_ASMF void lj_cont_nop(void); /* Do nothing, just continue execution. */ 109 LJ_ASMF void lj_cont_condt(void); /* Branch if result is true. */ 110 LJ_ASMF void lj_cont_condf(void); /* Branch if result is false. */ 111 LJ_ASMF void lj_cont_hook(void); /* Continue from hook yield. */ 112 LJ_ASMF void lj_cont_stitch(void); /* Trace stitching. */ 113 114 /* Start of the ASM code. */ 115 LJ_ASMF char lj_vm_asm_begin[]; 116 117 /* Bytecode offsets are relative to lj_vm_asm_begin. */ 118 #define makeasmfunc(ofs) ((ASMFunction)(lj_vm_asm_begin + (ofs))) 119 120 #endif