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annotate third_party/luajit/src/lj_lib.h @ 190:a2725419f988 hg-web

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Updated so that bun builds will with already existing js files.
author MrJuneJune <me@mrjunejune.com>
date Sat, 24 Jan 2026 21:06:42 -0800
parents 94705b5986b3
children
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178
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1 /*
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2 ** Library function support.
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3 ** Copyright (C) 2005-2023 Mike Pall. See Copyright Notice in luajit.h
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4 */
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5
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6 #ifndef _LJ_LIB_H
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7 #define _LJ_LIB_H
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8
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9 #include "lj_obj.h"
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10
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11 /*
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12 ** A fallback handler is called by the assembler VM if the fast path fails:
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13 **
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14 ** - too few arguments: unrecoverable.
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15 ** - wrong argument type: recoverable, if coercion succeeds.
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16 ** - bad argument value: unrecoverable.
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17 ** - stack overflow: recoverable, if stack reallocation succeeds.
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18 ** - extra handling: recoverable.
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19 **
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20 ** The unrecoverable cases throw an error with lj_err_arg(), lj_err_argtype(),
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21 ** lj_err_caller() or lj_err_callermsg().
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22 ** The recoverable cases return 0 or the number of results + 1.
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23 ** The assembler VM retries the fast path only if 0 is returned.
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24 ** This time the fallback must not be called again or it gets stuck in a loop.
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25 */
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26
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27 /* Return values from fallback handler. */
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28 #define FFH_RETRY 0
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29 #define FFH_UNREACHABLE FFH_RETRY
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30 #define FFH_RES(n) ((n)+1)
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31 #define FFH_TAILCALL (-1)
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32
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33 LJ_FUNC TValue *lj_lib_checkany(lua_State *L, int narg);
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34 LJ_FUNC GCstr *lj_lib_checkstr(lua_State *L, int narg);
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35 LJ_FUNC GCstr *lj_lib_optstr(lua_State *L, int narg);
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36 #if LJ_DUALNUM
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37 LJ_FUNC void lj_lib_checknumber(lua_State *L, int narg);
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38 #else
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39 #define lj_lib_checknumber(L, narg) lj_lib_checknum((L), (narg))
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40 #endif
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41 LJ_FUNC lua_Number lj_lib_checknum(lua_State *L, int narg);
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42 LJ_FUNC int32_t lj_lib_checkint(lua_State *L, int narg);
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43 LJ_FUNC int32_t lj_lib_optint(lua_State *L, int narg, int32_t def);
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44 LJ_FUNC GCfunc *lj_lib_checkfunc(lua_State *L, int narg);
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45 LJ_FUNC GCtab *lj_lib_checktab(lua_State *L, int narg);
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46 LJ_FUNC GCtab *lj_lib_checktabornil(lua_State *L, int narg);
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47 LJ_FUNC int lj_lib_checkopt(lua_State *L, int narg, int def, const char *lst);
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48
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49 #if LJ_HASBUFFER
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50 LJ_FUNC GCstr *lj_lib_checkstrx(lua_State *L, int narg);
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51 LJ_FUNC int32_t lj_lib_checkintrange(lua_State *L, int narg,
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52 int32_t a, int32_t b);
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53 #endif
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54
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55 /* Avoid including lj_frame.h. */
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56 #if LJ_GC64
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57 #define lj_lib_upvalue(L, n) \
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58 (&gcval(L->base-2)->fn.c.upvalue[(n)-1])
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59 #elif LJ_FR2
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60 #define lj_lib_upvalue(L, n) \
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61 (&gcref((L->base-2)->gcr)->fn.c.upvalue[(n)-1])
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62 #else
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63 #define lj_lib_upvalue(L, n) \
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64 (&gcref((L->base-1)->fr.func)->fn.c.upvalue[(n)-1])
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65 #endif
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66
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67 #if LJ_TARGET_WINDOWS
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68 #define lj_lib_checkfpu(L) \
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69 do { setnumV(L->top++, (lua_Number)1437217655); \
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70 if (lua_tointeger(L, -1) != 1437217655) lj_err_caller(L, LJ_ERR_BADFPU); \
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71 L->top--; } while (0)
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72 #else
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73 #define lj_lib_checkfpu(L) UNUSED(L)
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74 #endif
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75
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76 LJ_FUNC GCfunc *lj_lib_pushcc(lua_State *L, lua_CFunction f, int id, int n);
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77 #define lj_lib_pushcf(L, fn, id) (lj_lib_pushcc(L, (fn), (id), 0))
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78
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79 /* Library function declarations. Scanned by buildvm. */
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80 #define LJLIB_CF(name) static int lj_cf_##name(lua_State *L)
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81 #define LJLIB_ASM(name) static int lj_ffh_##name(lua_State *L)
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82 #define LJLIB_ASM_(name)
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83 #define LJLIB_LUA(name)
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84 #define LJLIB_SET(name)
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85 #define LJLIB_PUSH(arg)
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86 #define LJLIB_REC(handler)
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87 #define LJLIB_NOREGUV
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88 #define LJLIB_NOREG
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89
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90 #define LJ_LIB_REG(L, regname, name) \
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91 lj_lib_register(L, regname, lj_lib_init_##name, lj_lib_cf_##name)
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92
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93 LJ_FUNC void lj_lib_register(lua_State *L, const char *libname,
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94 const uint8_t *init, const lua_CFunction *cf);
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95 LJ_FUNC void lj_lib_prereg(lua_State *L, const char *name, lua_CFunction f,
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96 GCtab *env);
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97 LJ_FUNC int lj_lib_postreg(lua_State *L, lua_CFunction cf, int id,
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98 const char *name);
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99
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100 /* Library init data tags. */
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101 #define LIBINIT_LENMASK 0x3f
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102 #define LIBINIT_TAGMASK 0xc0
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103 #define LIBINIT_CF 0x00
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104 #define LIBINIT_ASM 0x40
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105 #define LIBINIT_ASM_ 0x80
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106 #define LIBINIT_STRING 0xc0
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107 #define LIBINIT_MAXSTR 0x38
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108 #define LIBINIT_LUA 0xf9
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109 #define LIBINIT_SET 0xfa
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110 #define LIBINIT_NUMBER 0xfb
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111 #define LIBINIT_COPY 0xfc
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112 #define LIBINIT_LASTCL 0xfd
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113 #define LIBINIT_FFID 0xfe
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114 #define LIBINIT_END 0xff
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115
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116 #endif