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annotate third_party/luajit/src/lj_bcdump.h @ 205:e07b4b5a66bb

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author MrJuneJune <me@mrjunejune.com>
date Sun, 15 Feb 2026 11:07:52 -0800
parents 94705b5986b3
children
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178
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1 /*
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2 ** Bytecode dump definitions.
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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_BCDUMP_H
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7 #define _LJ_BCDUMP_H
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8
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9 #include "lj_obj.h"
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10 #include "lj_lex.h"
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11
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12 /* -- Bytecode dump format ------------------------------------------------ */
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13
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14 /*
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15 ** dump = header proto+ 0U
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16 ** header = ESC 'L' 'J' versionB flagsU [namelenU nameB*]
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17 ** proto = lengthU pdata
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18 ** pdata = phead bcinsW* uvdataH* kgc* knum* [debugB*]
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19 ** phead = flagsB numparamsB framesizeB numuvB numkgcU numknU numbcU
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20 ** [debuglenU [firstlineU numlineU]]
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21 ** kgc = kgctypeU { ktab | (loU hiU) | (rloU rhiU iloU ihiU) | strB* }
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22 ** knum = intU0 | (loU1 hiU)
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23 ** ktab = narrayU nhashU karray* khash*
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24 ** karray = ktabk
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25 ** khash = ktabk ktabk
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26 ** ktabk = ktabtypeU { intU | (loU hiU) | strB* }
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27 **
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28 ** B = 8 bit, H = 16 bit, W = 32 bit, U = ULEB128 of W, U0/U1 = ULEB128 of W+1
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29 */
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30
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31 /* Bytecode dump header. */
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32 #define BCDUMP_HEAD1 0x1b
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33 #define BCDUMP_HEAD2 0x4c
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34 #define BCDUMP_HEAD3 0x4a
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35
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36 /* If you perform *any* kind of private modifications to the bytecode itself
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37 ** or to the dump format, you *must* set BCDUMP_VERSION to 0x80 or higher.
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38 */
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39 #define BCDUMP_VERSION 2
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40
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41 /* Compatibility flags. */
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42 #define BCDUMP_F_BE 0x01
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43 #define BCDUMP_F_STRIP 0x02
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44 #define BCDUMP_F_FFI 0x04
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45 #define BCDUMP_F_FR2 0x08
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46
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47 #define BCDUMP_F_KNOWN (BCDUMP_F_FR2*2-1)
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48
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49 /* Type codes for the GC constants of a prototype. Plus length for strings. */
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50 enum {
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51 BCDUMP_KGC_CHILD, BCDUMP_KGC_TAB, BCDUMP_KGC_I64, BCDUMP_KGC_U64,
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52 BCDUMP_KGC_COMPLEX, BCDUMP_KGC_STR
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53 };
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54
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55 /* Type codes for the keys/values of a constant table. */
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56 enum {
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57 BCDUMP_KTAB_NIL, BCDUMP_KTAB_FALSE, BCDUMP_KTAB_TRUE,
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58 BCDUMP_KTAB_INT, BCDUMP_KTAB_NUM, BCDUMP_KTAB_STR
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59 };
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60
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61 /* -- Bytecode reader/writer ---------------------------------------------- */
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62
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63 LJ_FUNC int lj_bcwrite(lua_State *L, GCproto *pt, lua_Writer writer,
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64 void *data, int strip);
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65 LJ_FUNC GCproto *lj_bcread_proto(LexState *ls);
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66 LJ_FUNC GCproto *lj_bcread(LexState *ls);
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67
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68 #endif