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| author | Benoit Giannangeli <benoit.giannangeli@boursorama.fr> | 2017-02-03 08:18:06 +0100 |
|---|---|---|
| committer | Benoit Giannangeli <benoit.giannangeli@boursorama.fr> | 2017-02-03 09:03:15 +0100 |
| commit | 9fbe044cbff12b635e535a36abcf2fb2a03dee11 (patch) | |
| tree | f78e41199c8b40d50e39e4028de951be1e71c040 /src/lvm.js | |
| parent | 7b844c5caf81ac843a210477ef47fd16e8af2f2c (diff) | |
| download | fengari-9fbe044cbff12b635e535a36abcf2fb2a03dee11.tar.gz fengari-9fbe044cbff12b635e535a36abcf2fb2a03dee11.tar.bz2 fengari-9fbe044cbff12b635e535a36abcf2fb2a03dee11.zip | |
Dispatch loop
Diffstat (limited to 'src/lvm.js')
| -rw-r--r-- | src/lvm.js | 133 |
1 files changed, 129 insertions, 4 deletions
@@ -2,23 +2,148 @@ "use strict"; const BytecodeParser = require("./lundump.js"); +const OC = require('./lopcodes.js'); class LuaVM { - constructor(cl) { - this.cl = cl + constructor(L) { + this.L = L; + } + + RA(base, a) { + return base + a; + } + + RB(base, opcode, base, b) { + return base + b; + } + + RC(base, c) { + return base + c; + } + + RKB(base, k, b) { + return OC.ISK(b) ? k[OC.INDEXK(b)] : base + b; + } + + RKC(base, k, c) { + return OC.ISK(c) ? k[OC.INDEXK(c)] : base + c; } execute() { + let L = this.L; + let ci = L.ci[this.L.ciOff]; + newframe: + let cl = ci.func; + let k = cl.p.k; + let base = ci.base; + for (;;) { + let i = ci.savedpc[ci.pcOff++]; + let ra = this.RA(base, i.a); + switch (OC.OpCodes[i.opcode]) { + case "OP_MOVE": + break; + case "OP_LOADK": + break; + case "OP_LOADKX": + break; + case "OP_LOADBOOL": + break; + case "OP_LOADNIL": + break; + case "OP_GETUPVAL": + break; + case "OP_GETTABUP": + break; + case "OP_GETTABLE": + break; + case "OP_SETTABUP": + break; + case "OP_SETUPVAL": + break; + case "OP_SETTABLE": + break; + case "OP_NEWTABLE": + break; + case "OP_SELF": + break; + case "OP_ADD": + break; + case "OP_SUB": + break; + case "OP_MUL": + break; + case "OP_MOD": + break; + case "OP_POW": + break; + case "OP_DIV": + break; + case "OP_IDIV": + break; + case "OP_BAND": + break; + case "OP_BOR": + break; + case "OP_BXOR": + break; + case "OP_SHL": + break; + case "OP_SHR": + break; + case "OP_UNM": + break; + case "OP_BNOT": + break; + case "OP_NOT": + break; + case "OP_LEN": + break; + case "OP_CONCAT": + break; + case "OP_JMP": + break; + case "OP_EQ": + break; + case "OP_LT": + break; + case "OP_LE": + break; + case "OP_TEST": + break; + case "OP_TESTSET": + break; + case "OP_CALL": + break; + case "OP_TAILCALL": + break; + case "OP_RETURN": + break; + case "OP_FORLOOP": + break; + case "OP_FORPREP": + break; + case "OP_TFORCALL": + break; + case "OP_TFORLOOP": + break; + case "OP_SETLIST": + break; + case "OP_CLOSURE": + break; + case "OP_VARARG": + break; + case "OP_EXTRAARG": + break; + } } } } module.exports = { - LuaVM: LuaVM, - OpCodes: OpCodes + LuaVM: LuaVM };
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