Sat, 20 Nov 2010 15:19:42 +0000
Remove some debugging in math.ldexp() accidentally committed
0 | 1 | |
2
253863ece36f
Implement OP_MOVE, OP_LOADNIL and OP_RETURN. Also change the way OP_CALL is implemented, and update the test code with a more complicated (kind of) sample.
Matthew Wild <mwild1@gmail.com>
parents:
1
diff
changeset
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2 | var OP_MOVE = 0; |
0 | 3 | var OP_LOADK = 1; |
39 | 4 | var OP_LOADBOOL = 2; |
2
253863ece36f
Implement OP_MOVE, OP_LOADNIL and OP_RETURN. Also change the way OP_CALL is implemented, and update the test code with a more complicated (kind of) sample.
Matthew Wild <mwild1@gmail.com>
parents:
1
diff
changeset
|
5 | var OP_LOADNIL = 3; |
20
977ae93f612c
Support for upvalues in functions \o/ implemented OP_GETUPVAL, and a stub for OP_SETUPVAL.
Matthew Wild <mwild1@gmail.com>
parents:
19
diff
changeset
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6 | var OP_GETUPVAL = 4; |
0 | 7 | var OP_GETGLOBAL = 5; |
28
d14b47c3870f
Support for OP_NEWTABLE, OP_GETTABLE, OP_SETTABLE
Matthew Wild <mwild1@gmail.com>
parents:
27
diff
changeset
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8 | var OP_GETTABLE = 6; |
6 | 9 | var OP_SETGLOBAL = 7; |
20
977ae93f612c
Support for upvalues in functions \o/ implemented OP_GETUPVAL, and a stub for OP_SETUPVAL.
Matthew Wild <mwild1@gmail.com>
parents:
19
diff
changeset
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10 | var OP_SETUPVAL = 8; |
28
d14b47c3870f
Support for OP_NEWTABLE, OP_GETTABLE, OP_SETTABLE
Matthew Wild <mwild1@gmail.com>
parents:
27
diff
changeset
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11 | var OP_SETTABLE = 9; |
d14b47c3870f
Support for OP_NEWTABLE, OP_GETTABLE, OP_SETTABLE
Matthew Wild <mwild1@gmail.com>
parents:
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diff
changeset
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12 | var OP_NEWTABLE = 10; |
36 | 13 | var OP_SELF = 11; |
58
40d0b0429428
Implement OP_ADD, OP_SUB, OP_LT
Matthew Wild <mwild1@gmail.com>
parents:
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diff
changeset
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14 | var OP_ADD = 12; |
40d0b0429428
Implement OP_ADD, OP_SUB, OP_LT
Matthew Wild <mwild1@gmail.com>
parents:
56
diff
changeset
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15 | var OP_SUB = 13; |
99
633e414a496c
Implement OP_DIV (no metamethod yet)
Matthew Wild <mwild1@gmail.com>
parents:
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diff
changeset
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16 | var OP_DIV = 15; |
40
3a074ec1790f
Implement OP_TEST and OP_JMP
Matthew Wild <mwild1@gmail.com>
parents:
39
diff
changeset
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17 | var OP_JMP = 22; |
81 | 18 | var OP_EQ = 23; |
58
40d0b0429428
Implement OP_ADD, OP_SUB, OP_LT
Matthew Wild <mwild1@gmail.com>
parents:
56
diff
changeset
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19 | var OP_LT = 24; |
90
40edbc05fbb9
Implement OP_LE (no metamethod yet)
Matthew Wild <mwild1@gmail.com>
parents:
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diff
changeset
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20 | var OP_LE = 25; |
40
3a074ec1790f
Implement OP_TEST and OP_JMP
Matthew Wild <mwild1@gmail.com>
parents:
39
diff
changeset
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21 | var OP_TEST = 26; |
59 | 22 | var OP_TESTSET = 27; |
0 | 23 | var OP_CALL = 28; |
2
253863ece36f
Implement OP_MOVE, OP_LOADNIL and OP_RETURN. Also change the way OP_CALL is implemented, and update the test code with a more complicated (kind of) sample.
Matthew Wild <mwild1@gmail.com>
parents:
1
diff
changeset
|
24 | var OP_RETURN = 30; |
34
2c3d73c76d0f
OP_FORPREP, OP_FORLOOP: Support for numerical for loops
Matthew Wild <mwild1@gmail.com>
parents:
33
diff
changeset
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25 | var OP_FORLOOP = 31; |
2c3d73c76d0f
OP_FORPREP, OP_FORLOOP: Support for numerical for loops
Matthew Wild <mwild1@gmail.com>
parents:
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diff
changeset
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26 | var OP_FORPREP = 32; |
15
5240eaff785f
Implement basic OP_CLOSURE (no support for upvalues yet)
Matthew Wild <mwild1@gmail.com>
parents:
14
diff
changeset
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27 | var OP_CLOSURE = 36; |
0 | 28 | |
91
298efa276aff
Disable debugMode, accidentally committed
Matthew Wild <mwild1@gmail.com>
parents:
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diff
changeset
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29 | var debugMode = false; |
8 | 30 | |
73
6b43d68abc94
Large overhaul - every LValue (and LBinaryChunk) now has a valid 'vm' property, so we know in which LVM to call it or its metamethods
Matthew Wild <mwild1@gmail.com>
parents:
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diff
changeset
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31 | function LValue(vm, type, value) |
0 | 32 | { |
73
6b43d68abc94
Large overhaul - every LValue (and LBinaryChunk) now has a valid 'vm' property, so we know in which LVM to call it or its metamethods
Matthew Wild <mwild1@gmail.com>
parents:
72
diff
changeset
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33 | this.vm = vm; |
0 | 34 | this.type = type||"nil"; |
37
62c1d9bf3000
Allow LValues with a value of 'false' to be create (it was converted to 'null')
Matthew Wild <mwild1@gmail.com>
parents:
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changeset
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35 | this.value = value; |
0 | 36 | } |
37 | ||
38 | LValue.prototype = { | |
39 | call: function (args) | |
40 | { | |
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052bd6e8daf6
Give LValue precall() and call() methods, give functions a vm property.
Matthew Wild <mwild1@gmail.com>
parents:
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changeset
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41 | var f = this.precall(); |
74
a4a6adee1459
New Lua<->native function interface, simpler. Added type() to baselib.
Matthew Wild <mwild1@gmail.com>
parents:
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changeset
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42 | var ret = this.vm.call(f, args); |
49
052bd6e8daf6
Give LValue precall() and call() methods, give functions a vm property.
Matthew Wild <mwild1@gmail.com>
parents:
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changeset
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43 | if(typeof(ret) == "undefined") |
052bd6e8daf6
Give LValue precall() and call() methods, give functions a vm property.
Matthew Wild <mwild1@gmail.com>
parents:
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44 | ret = []; |
052bd6e8daf6
Give LValue precall() and call() methods, give functions a vm property.
Matthew Wild <mwild1@gmail.com>
parents:
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changeset
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45 | return ret; |
052bd6e8daf6
Give LValue precall() and call() methods, give functions a vm property.
Matthew Wild <mwild1@gmail.com>
parents:
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changeset
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46 | }, |
052bd6e8daf6
Give LValue precall() and call() methods, give functions a vm property.
Matthew Wild <mwild1@gmail.com>
parents:
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changeset
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47 | precall: function () |
052bd6e8daf6
Give LValue precall() and call() methods, give functions a vm property.
Matthew Wild <mwild1@gmail.com>
parents:
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diff
changeset
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48 | { |
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6f338fbf0abc
Throw an error if trying to call a non-function
Matthew Wild <mwild1@gmail.com>
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49 | if(this.type == "function") |
6f338fbf0abc
Throw an error if trying to call a non-function
Matthew Wild <mwild1@gmail.com>
parents:
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changeset
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50 | return this.value; |
6f338fbf0abc
Throw an error if trying to call a non-function
Matthew Wild <mwild1@gmail.com>
parents:
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51 | else |
6f338fbf0abc
Throw an error if trying to call a non-function
Matthew Wild <mwild1@gmail.com>
parents:
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changeset
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52 | throw "Attempt to call a " + this.type + " value"; |
0 | 53 | }, |
54
5e0bdf7f234f
Support for __index metamethod
Matthew Wild <mwild1@gmail.com>
parents:
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changeset
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54 | index: function (key, raw) |
0 | 55 | { |
56 | if(this.type == "table") | |
57 | { | |
54
5e0bdf7f234f
Support for __index metamethod
Matthew Wild <mwild1@gmail.com>
parents:
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58 | var val; |
5e0bdf7f234f
Support for __index metamethod
Matthew Wild <mwild1@gmail.com>
parents:
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changeset
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59 | if(key.value in this.value) |
5e0bdf7f234f
Support for __index metamethod
Matthew Wild <mwild1@gmail.com>
parents:
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60 | return this.value[key.value]; |
5e0bdf7f234f
Support for __index metamethod
Matthew Wild <mwild1@gmail.com>
parents:
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changeset
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61 | else if(raw != true && this.metatable && this.metatable.type != "nil") |
5e0bdf7f234f
Support for __index metamethod
Matthew Wild <mwild1@gmail.com>
parents:
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changeset
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62 | { |
73
6b43d68abc94
Large overhaul - every LValue (and LBinaryChunk) now has a valid 'vm' property, so we know in which LVM to call it or its metamethods
Matthew Wild <mwild1@gmail.com>
parents:
72
diff
changeset
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63 | var __index = this.metatable.index(this.vm.LValue("__index")); |
60
430a0b155703
Support for tables in __index
Matthew Wild <mwild1@gmail.com>
parents:
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changeset
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64 | if(__index.type == "function") |
54
5e0bdf7f234f
Support for __index metamethod
Matthew Wild <mwild1@gmail.com>
parents:
53
diff
changeset
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65 | { |
73
6b43d68abc94
Large overhaul - every LValue (and LBinaryChunk) now has a valid 'vm' property, so we know in which LVM to call it or its metamethods
Matthew Wild <mwild1@gmail.com>
parents:
72
diff
changeset
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66 | return this.vm.LValue(__index.call([this, key])[0]); |
54
5e0bdf7f234f
Support for __index metamethod
Matthew Wild <mwild1@gmail.com>
parents:
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changeset
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67 | } |
60
430a0b155703
Support for tables in __index
Matthew Wild <mwild1@gmail.com>
parents:
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changeset
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68 | else if(__index.type != "nil") |
430a0b155703
Support for tables in __index
Matthew Wild <mwild1@gmail.com>
parents:
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changeset
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69 | return __index.index(key); |
54
5e0bdf7f234f
Support for __index metamethod
Matthew Wild <mwild1@gmail.com>
parents:
53
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changeset
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70 | } |
73
6b43d68abc94
Large overhaul - every LValue (and LBinaryChunk) now has a valid 'vm' property, so we know in which LVM to call it or its metamethods
Matthew Wild <mwild1@gmail.com>
parents:
72
diff
changeset
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71 | return this.vm.LValue(null); |
0 | 72 | } |
7
00ec5f6e7579
Add errors for when trying to index non-tables
Matthew Wild <mwild1@gmail.com>
parents:
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changeset
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73 | else |
00ec5f6e7579
Add errors for when trying to index non-tables
Matthew Wild <mwild1@gmail.com>
parents:
6
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changeset
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74 | throw "Attempt to index a " + this.type + " value"; |
0 | 75 | }, |
76 | setIndex: function (key, value) | |
77 | { | |
78 | if(this.type == "table") | |
79 | { | |
80 | this.value[key.value] = value; | |
81 | } | |
7
00ec5f6e7579
Add errors for when trying to index non-tables
Matthew Wild <mwild1@gmail.com>
parents:
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changeset
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82 | else |
00ec5f6e7579
Add errors for when trying to index non-tables
Matthew Wild <mwild1@gmail.com>
parents:
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changeset
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83 | throw "Attempt to index a " + this.type + " value"; |
53 | 84 | }, |
85 | setMetatable: function (metatable) | |
86 | { | |
87 | if(metatable.type == "table") | |
88 | this.metatable = metatable; | |
89 | else if(metatable.type == "nil") | |
90 | this.metatable = null; | |
91 | else | |
92 | throw "Attempt to set a "+metatable.type+" value as a metatable"; | |
61 | 93 | }, |
94 | toString: function () | |
95 | { | |
96 | switch(this.type) | |
97 | { | |
98 | case "nil": | |
99 | return "nil"; | |
100 | default: | |
101 | return this.value.toString(); | |
102 | } | |
72
dc73a60b3c06
Give LValue an add() method, to eventually respect metamethods
Matthew Wild <mwild1@gmail.com>
parents:
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103 | }, |
86
97678a1565d4
Add LValue.truth() to return whether a value is (not(false) and not(nil))
Matthew Wild <mwild1@gmail.com>
parents:
85
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changeset
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104 | truth: function () |
97678a1565d4
Add LValue.truth() to return whether a value is (not(false) and not(nil))
Matthew Wild <mwild1@gmail.com>
parents:
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105 | { |
97678a1565d4
Add LValue.truth() to return whether a value is (not(false) and not(nil))
Matthew Wild <mwild1@gmail.com>
parents:
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changeset
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106 | if(this.type == "nil" || (this.type == "boolean" && this.value == false)) |
97678a1565d4
Add LValue.truth() to return whether a value is (not(false) and not(nil))
Matthew Wild <mwild1@gmail.com>
parents:
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107 | return false; |
97678a1565d4
Add LValue.truth() to return whether a value is (not(false) and not(nil))
Matthew Wild <mwild1@gmail.com>
parents:
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108 | return true; |
97678a1565d4
Add LValue.truth() to return whether a value is (not(false) and not(nil))
Matthew Wild <mwild1@gmail.com>
parents:
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109 | }, |
72
dc73a60b3c06
Give LValue an add() method, to eventually respect metamethods
Matthew Wild <mwild1@gmail.com>
parents:
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110 | add: function (op2) |
dc73a60b3c06
Give LValue an add() method, to eventually respect metamethods
Matthew Wild <mwild1@gmail.com>
parents:
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111 | { |
dc73a60b3c06
Give LValue an add() method, to eventually respect metamethods
Matthew Wild <mwild1@gmail.com>
parents:
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112 | var metamethod; |
73
6b43d68abc94
Large overhaul - every LValue (and LBinaryChunk) now has a valid 'vm' property, so we know in which LVM to call it or its metamethods
Matthew Wild <mwild1@gmail.com>
parents:
72
diff
changeset
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113 | var __add = this.vm.LValue("__add"); |
72
dc73a60b3c06
Give LValue an add() method, to eventually respect metamethods
Matthew Wild <mwild1@gmail.com>
parents:
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changeset
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114 | if(this.metatable) |
dc73a60b3c06
Give LValue an add() method, to eventually respect metamethods
Matthew Wild <mwild1@gmail.com>
parents:
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115 | metamethod = this.metatable.index(__add); |
dc73a60b3c06
Give LValue an add() method, to eventually respect metamethods
Matthew Wild <mwild1@gmail.com>
parents:
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116 | if((!metamethod || metamethod.type == "nil") && op2.metatable) |
dc73a60b3c06
Give LValue an add() method, to eventually respect metamethods
Matthew Wild <mwild1@gmail.com>
parents:
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117 | metamethod = op2.metatable.index(__add); |
dc73a60b3c06
Give LValue an add() method, to eventually respect metamethods
Matthew Wild <mwild1@gmail.com>
parents:
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118 | if(metamethod && metamethod.type != "nil") |
dc73a60b3c06
Give LValue an add() method, to eventually respect metamethods
Matthew Wild <mwild1@gmail.com>
parents:
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119 | { |
75
aaecd573ee30
Support for __add metamethod
Matthew Wild <mwild1@gmail.com>
parents:
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120 | return metamethod.call([this, op2]); |
72
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Matthew Wild <mwild1@gmail.com>
parents:
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121 | } |
dc73a60b3c06
Give LValue an add() method, to eventually respect metamethods
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122 | else if((this.type == "number" || this.type == "string") |
dc73a60b3c06
Give LValue an add() method, to eventually respect metamethods
Matthew Wild <mwild1@gmail.com>
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123 | && (op2.type == "number" || op2.type == "string")) |
dc73a60b3c06
Give LValue an add() method, to eventually respect metamethods
Matthew Wild <mwild1@gmail.com>
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124 | { |
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Matthew Wild <mwild1@gmail.com>
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125 | // Plain addition |
76
d7d7a6bb90cd
Fix OP_ADD code to use new LValue format
Matthew Wild <mwild1@gmail.com>
parents:
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126 | return this.vm.LValue(parseFloat(this.value, 10) + parseFloat(op2.value, 10)); |
72
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Give LValue an add() method, to eventually respect metamethods
Matthew Wild <mwild1@gmail.com>
parents:
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127 | } |
dc73a60b3c06
Give LValue an add() method, to eventually respect metamethods
Matthew Wild <mwild1@gmail.com>
parents:
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128 | else |
dc73a60b3c06
Give LValue an add() method, to eventually respect metamethods
Matthew Wild <mwild1@gmail.com>
parents:
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129 | throw "Attempt to perform arithmetic on a "+this.type+" and "+op2.type; |
80
beb0bb936aca
Give LValue an equals() method, returns true/false if the value == the first argument (checks metamethod)
Matthew Wild <mwild1@gmail.com>
parents:
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130 | }, |
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Give LValue an equals() method, returns true/false if the value == the first argument (checks metamethod)
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131 | equals: function (op2) |
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132 | { |
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133 | if(this.type != op2.type) |
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Give LValue an equals() method, returns true/false if the value == the first argument (checks metamethod)
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134 | return false; |
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Give LValue an equals() method, returns true/false if the value == the first argument (checks metamethod)
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parents:
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135 | if(this.value == op2.value) |
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Give LValue an equals() method, returns true/false if the value == the first argument (checks metamethod)
Matthew Wild <mwild1@gmail.com>
parents:
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136 | return true; |
beb0bb936aca
Give LValue an equals() method, returns true/false if the value == the first argument (checks metamethod)
Matthew Wild <mwild1@gmail.com>
parents:
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137 | var __eq = this.vm.LValue("__eq"); |
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Give LValue an equals() method, returns true/false if the value == the first argument (checks metamethod)
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parents:
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138 | if(this.metatable && op2.metatable) |
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Give LValue an equals() method, returns true/false if the value == the first argument (checks metamethod)
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139 | { |
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parents:
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140 | var metamethod1 = this.metatable.index(__eq); |
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Give LValue an equals() method, returns true/false if the value == the first argument (checks metamethod)
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141 | var metamethod2 = op2.metatable.index(__eq); |
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Give LValue an equals() method, returns true/false if the value == the first argument (checks metamethod)
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142 | if(metamethod1.equals(metamethod2)) |
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Give LValue an equals() method, returns true/false if the value == the first argument (checks metamethod)
Matthew Wild <mwild1@gmail.com>
parents:
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143 | { |
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Give LValue an equals() method, returns true/false if the value == the first argument (checks metamethod)
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parents:
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144 | var result = metamethod1.call([this, op2]); |
beb0bb936aca
Give LValue an equals() method, returns true/false if the value == the first argument (checks metamethod)
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145 | return (result[0].type != "nil" |
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Give LValue an equals() method, returns true/false if the value == the first argument (checks metamethod)
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146 | && (result[0].type != "boolean" || result[0].value == true) |
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147 | ); |
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148 | } |
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Give LValue an equals() method, returns true/false if the value == the first argument (checks metamethod)
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149 | } |
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Give LValue an equals() method, returns true/false if the value == the first argument (checks metamethod)
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150 | return false; |
0 | 151 | } |
152 | }; | |
153 | ||
92
e9da9847121a
Pass sourceName to child chunks (in binary files it's only set in the top-level chunk)
Matthew Wild <mwild1@gmail.com>
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154 | function LBinaryChunk(vm, chunk, start, sourceName) |
0 | 155 | { |
9
3f055c9ab80e
Add a bytecode interpreter \o/
Matthew Wild <mwild1@gmail.com>
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156 | this.chunk = chunk; |
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157 | this.pos = start||12; |
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158 | |
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159 | this.sourceName = this.readString(); |
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160 | if(sourceName) |
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161 | this.sourceName = sourceName; |
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162 | this.lineDefined = this.readInt(); |
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163 | this.lastLineDefined = this.readInt(); |
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164 | this.numUpvalues = this.readByte(); |
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165 | this.numParameters = this.readByte(); |
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166 | this.isVararg = this.readByte(); |
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167 | this.maxStackSize = this.readByte(); |
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168 | |
0 | 169 | this.instructions = []; |
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170 | |
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171 | this.numInstructions = this.readInt(); |
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172 | for(var i=0;i<this.numInstructions;i++) |
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173 | { |
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174 | var ins = this.readInt(); |
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175 | this.instructions.push([ |
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176 | ins&0x3F, // Opcode |
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177 | (ins>>6)&0xFF, // Field A |
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178 | (ins>>23)&0x1FF, // Field B |
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179 | (ins>>14)&0x1FF // Field C |
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180 | ]); |
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181 | if(debugMode) |
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182 | { |
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183 | var pi = this.instructions[this.instructions.length-1]; |
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184 | sys.puts("Pos: "+(this.pos-4)+" Ins: "+ins+" OP: "+INS_OPCODE(pi)+" A: "+INS_A(pi)+" B: "+INS_B(pi)+" C: "+INS_C(pi)+" Bx: "+INS_Bx(pi)+" sBx: "+(INS_Bx(pi)-0x1FFFE)); |
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185 | } |
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186 | } |
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187 | |
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188 | this.constants = []; |
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189 | |
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190 | this.numConstants = this.readInt(); |
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191 | for(var i=0;i<this.numConstants;i++) |
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192 | { |
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193 | var type = this.readByte(); |
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194 | switch(type) |
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195 | { |
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196 | case 0: // Nil |
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197 | this.constants.push(new LValue(vm, "nil", null)); |
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198 | break; |
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199 | case 1: // Boolean |
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200 | this.constants.push(new LValue(vm, "boolean", this.readByte())); // FIXME type |
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201 | break; |
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202 | case 3: // Number |
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203 | this.constants.push(new LValue(vm, "number", this.readNumber())); |
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204 | break; |
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205 | case 4: // String |
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206 | this.constants.push(new LValue(vm, "string", this.readString())); |
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207 | break; |
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208 | default: |
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209 | throw "Invalid constant type "+type+" in bytecode"; |
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210 | } |
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211 | } |
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212 | |
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213 | this.prototypes = []; |
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214 | |
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215 | this.numPrototypes = this.readInt(); |
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216 | for(var i=0;i<this.numPrototypes;i++) |
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217 | { |
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218 | var p = new LBinaryChunk(vm, chunk, this.pos, this.sourceName); |
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219 | this.pos = p.pos; |
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220 | this.prototypes.push(p); |
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221 | } |
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222 | |
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223 | this.sourceLines = []; |
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224 | |
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225 | this.numSourceLines = this.readInt(); |
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226 | for(var i=0;i<this.numSourceLines;i++) |
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227 | { |
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228 | this.sourceLines.push(this.readInt()); |
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229 | } |
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230 | |
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231 | this.localList = []; |
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232 | this.numLocalList = this.readInt(); |
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233 | for(var i=0;i<this.numLocalList;i++) |
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234 | { |
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235 | this.localList.push([this.readString(),this.readInt(),this.readInt()]); |
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236 | } |
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237 | |
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238 | this.upvalueList = []; |
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239 | this.numUpvalueList = this.readInt(); |
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240 | for(var i=0;i<this.numUpvalueList;i++) |
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241 | { |
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242 | this.upvalueList.push(this.readString()); |
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243 | } |
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244 | |
0 | 245 | return this; |
246 | } | |
247 | ||
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248 | LBinaryChunk.prototype = { |
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249 | readBytes: function (n) |
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250 | { |
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251 | return this.chunk.slice(this.pos, this.pos+=n); |
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252 | }, |
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253 | readByte: function () |
0 | 254 | { |
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255 | return this.readBytes(1).charCodeAt(0); |
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256 | }, |
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257 | readInt: function () |
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258 | { |
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259 | //FIXME: Endianness |
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260 | return this.readByte() | (this.readByte()<<8) |
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261 | | (this.readByte()<<16) | (this.readByte()<<24); |
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262 | }, |
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263 | readString: function () |
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264 | { |
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265 | var len = this.readInt(); |
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266 | return this.readBytes(len).substring(0,len-1); |
0 | 267 | }, |
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268 | readNumber: function () |
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269 | { |
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270 | //FIXME: Endianness |
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271 | var bytes = [this.readByte(),this.readByte(),this.readByte(),this.readByte(), |
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272 | this.readByte(),this.readByte(),this.readByte(),this.readByte()].reverse(); |
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273 | |
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274 | var sign = (bytes[0]>>7)&0x1; |
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275 | var exp = (bytes[0]&0x7F)<<4 | (bytes[1]&0xf0)>>4; |
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276 | |
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277 | var frac = ((bytes[1] & 0x0f) * Math.pow(2,48)) |
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278 | + (bytes[2] * Math.pow(2,40)) |
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279 | + (bytes[3] * Math.pow(2,32)) |
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280 | + (bytes[4] * Math.pow(2,24)) |
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281 | + (bytes[5] * Math.pow(2,16)) |
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282 | + (bytes[6] * Math.pow(2,8)) |
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283 | + bytes[7]; |
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284 | |
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285 | if(exp != 0x000 && exp != 0x7FF) |
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286 | { |
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287 | var n = (sign==1?-1:1)*Math.pow(2,exp-1023)*(1+(frac/0x10000000000000)); |
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288 | return n; |
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289 | } |
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290 | else if(exp == 0x000) |
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291 | { |
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292 | return sign*0; |
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293 | } |
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294 | else |
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295 | return frac==0?sign*Infinity:NaN; |
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296 | } |
0 | 297 | }; |
298 | ||
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299 | function INS_OPCODE(ins) |
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300 | { |
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301 | return ins[0]; |
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302 | } |
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303 | |
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304 | function INS_A(ins) |
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305 | { |
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306 | return ins[1]; |
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307 | } |
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308 | |
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309 | function INS_B(ins) |
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310 | { |
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311 | return ins[2]; |
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312 | } |
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313 | |
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314 | function INS_C(ins) |
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315 | { |
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316 | return ins[3]; |
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317 | } |
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318 | |
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319 | function INS_Bx(ins) |
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320 | { |
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321 | return ((INS_C(ins))|(INS_B(ins)<<9)); |
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322 | } |
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323 | |
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324 | function INS_sBx(ins) |
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325 | { |
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326 | return (INS_Bx(ins)-0x1FFFF); |
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327 | } |
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328 | |
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329 | function RK(frame, R) |
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330 | { |
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331 | var keysource = (R&0x100)?frame.f.constants:frame.reg; |
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332 | return keysource[R&0xff]; |
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333 | } |
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334 | |
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335 | function LFunction(vm, chunk, env) |
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336 | { |
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337 | function F() {}; |
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338 | F.prototype = chunk; |
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339 | var o = new F(); |
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340 | o.vm = vm; |
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341 | o.environment = env; |
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342 | o.chunk = chunk; |
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343 | o.upvalues = []; |
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344 | return o; |
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345 | } |
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346 | |
0 | 347 | function LVM() |
348 | { | |
349 | this.callstack = []; | |
350 | this.stack = []; | |
351 | return this; | |
352 | } | |
353 | ||
354 | LVM.prototype = { | |
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355 | LValue: function (value) |
0 | 356 | { |
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357 | switch(typeof(value)) |
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358 | { |
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359 | case "number": |
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360 | return new LValue(this, "number", value); |
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361 | case "string": |
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362 | return new LValue(this, "string", value); |
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363 | case "function": |
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364 | return new LValue(this, "function", value); |
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365 | case "object": |
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366 | if(value == null) |
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367 | return new LValue(this, "nil", value); |
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368 | else |
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369 | return new LValue(this, "table", value); |
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370 | case "undefined": |
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371 | return new LValue(this, "nil", null); |
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372 | default: |
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373 | throw "Not able to convert type " + |
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374 | typeof(value)+" from Javascript to Lua"; |
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375 | } |
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376 | }, |
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377 | call: function (lfFunction, args) |
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378 | { |
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379 | if(typeof(lfFunction) == "function") |
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380 | { |
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381 | return lfFunction.apply(this, args); |
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382 | } |
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383 | else |
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384 | { |
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385 | var frame = {f:lfFunction,pc:0,entry:true}; |
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386 | if(args) |
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387 | frame.reg = args.slice(0); |
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388 | else |
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389 | frame.reg = []; |
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390 | this.callstack.push(frame); |
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391 | for(var i=frame.reg.length;i<lfFunction.maxStackSize;i++) |
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392 | frame.reg[i] = this.LValue(null); |
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393 | return this.run(frame); |
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394 | } |
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395 | }, |
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396 | run: function(frame) |
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397 | { |
0 | 398 | var instruction; |
399 | while(this.callstack.length>0) | |
400 | { | |
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401 | instruction = frame.f.instructions[frame.pc++]; |
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402 | if(debugMode) |
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403 | { |
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404 | sys.puts("PC: "+(frame.pc-1)+" OP: "+instruction[0]); |
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405 | sys.puts("STACK: "+sys.inspect(frame.reg)); |
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Add a bytecode interpreter \o/
Matthew Wild <mwild1@gmail.com>
parents:
8
diff
changeset
|
406 | } |
3f055c9ab80e
Add a bytecode interpreter \o/
Matthew Wild <mwild1@gmail.com>
parents:
8
diff
changeset
|
407 | switch(INS_OPCODE(instruction)) |
0 | 408 | { |
2
253863ece36f
Implement OP_MOVE, OP_LOADNIL and OP_RETURN. Also change the way OP_CALL is implemented, and update the test code with a more complicated (kind of) sample.
Matthew Wild <mwild1@gmail.com>
parents:
1
diff
changeset
|
409 | case OP_MOVE: |
45
4d2cf0b5235d
Backed out changeset 741b953fcc5f (premature optimisations == bad)
Matthew Wild <mwild1@gmail.com>
parents:
42
diff
changeset
|
410 | frame.reg[INS_A(instruction)] = frame.reg[INS_B(instruction)]; |
2
253863ece36f
Implement OP_MOVE, OP_LOADNIL and OP_RETURN. Also change the way OP_CALL is implemented, and update the test code with a more complicated (kind of) sample.
Matthew Wild <mwild1@gmail.com>
parents:
1
diff
changeset
|
411 | break; |
253863ece36f
Implement OP_MOVE, OP_LOADNIL and OP_RETURN. Also change the way OP_CALL is implemented, and update the test code with a more complicated (kind of) sample.
Matthew Wild <mwild1@gmail.com>
parents:
1
diff
changeset
|
412 | case OP_LOADNIL: |
10
ce2f27fa25a4
Use new notation for accessing instruction fields
Matthew Wild <mwild1@gmail.com>
parents:
9
diff
changeset
|
413 | for(var i = INS_A(instruction);i<=INS_B(instruction);i++) |
73
6b43d68abc94
Large overhaul - every LValue (and LBinaryChunk) now has a valid 'vm' property, so we know in which LVM to call it or its metamethods
Matthew Wild <mwild1@gmail.com>
parents:
72
diff
changeset
|
414 | frame.reg[i] = new LValue(this, "nil", null); |
2
253863ece36f
Implement OP_MOVE, OP_LOADNIL and OP_RETURN. Also change the way OP_CALL is implemented, and update the test code with a more complicated (kind of) sample.
Matthew Wild <mwild1@gmail.com>
parents:
1
diff
changeset
|
415 | break; |
39 | 416 | case OP_LOADBOOL: |
73
6b43d68abc94
Large overhaul - every LValue (and LBinaryChunk) now has a valid 'vm' property, so we know in which LVM to call it or its metamethods
Matthew Wild <mwild1@gmail.com>
parents:
72
diff
changeset
|
417 | frame.reg[INS_A(instruction)] = new LValue(this, "boolean", INS_B(instruction)!=0); |
39 | 418 | if(INS_C(instruction)!=0) |
41
70eb0eb5e7e8
Split LVM.run() into LVM.call()/LVM.run()
Matthew Wild <mwild1@gmail.com>
parents:
40
diff
changeset
|
419 | frame.pc++; |
39 | 420 | break; |
20
977ae93f612c
Support for upvalues in functions \o/ implemented OP_GETUPVAL, and a stub for OP_SETUPVAL.
Matthew Wild <mwild1@gmail.com>
parents:
19
diff
changeset
|
421 | case OP_GETUPVAL: |
45
4d2cf0b5235d
Backed out changeset 741b953fcc5f (premature optimisations == bad)
Matthew Wild <mwild1@gmail.com>
parents:
42
diff
changeset
|
422 | frame.reg[INS_A(instruction)] = frame.f.upvalues[INS_B(instruction)]; |
20
977ae93f612c
Support for upvalues in functions \o/ implemented OP_GETUPVAL, and a stub for OP_SETUPVAL.
Matthew Wild <mwild1@gmail.com>
parents:
19
diff
changeset
|
423 | break; |
0 | 424 | case OP_GETGLOBAL: |
41
70eb0eb5e7e8
Split LVM.run() into LVM.call()/LVM.run()
Matthew Wild <mwild1@gmail.com>
parents:
40
diff
changeset
|
425 | var name = frame.f.constants[INS_Bx(instruction)]; |
45
4d2cf0b5235d
Backed out changeset 741b953fcc5f (premature optimisations == bad)
Matthew Wild <mwild1@gmail.com>
parents:
42
diff
changeset
|
426 | frame.reg[INS_A(instruction)] = frame.f.environment.index(name); |
0 | 427 | break; |
20
977ae93f612c
Support for upvalues in functions \o/ implemented OP_GETUPVAL, and a stub for OP_SETUPVAL.
Matthew Wild <mwild1@gmail.com>
parents:
19
diff
changeset
|
428 | case OP_SETUPVAL: |
45
4d2cf0b5235d
Backed out changeset 741b953fcc5f (premature optimisations == bad)
Matthew Wild <mwild1@gmail.com>
parents:
42
diff
changeset
|
429 | var reg = frame.reg[INS_A(instruction)]; |
41
70eb0eb5e7e8
Split LVM.run() into LVM.call()/LVM.run()
Matthew Wild <mwild1@gmail.com>
parents:
40
diff
changeset
|
430 | var upvalue = frame.f.upvalues[INS_B(instruction)]; |
26 | 431 | upvalue.type = reg.type; |
432 | upvalue.value = reg.value; | |
20
977ae93f612c
Support for upvalues in functions \o/ implemented OP_GETUPVAL, and a stub for OP_SETUPVAL.
Matthew Wild <mwild1@gmail.com>
parents:
19
diff
changeset
|
433 | break; |
6 | 434 | case OP_SETGLOBAL: |
41
70eb0eb5e7e8
Split LVM.run() into LVM.call()/LVM.run()
Matthew Wild <mwild1@gmail.com>
parents:
40
diff
changeset
|
435 | var name = frame.f.constants[INS_Bx(instruction)]; |
45
4d2cf0b5235d
Backed out changeset 741b953fcc5f (premature optimisations == bad)
Matthew Wild <mwild1@gmail.com>
parents:
42
diff
changeset
|
436 | frame.f.environment.setIndex(name, frame.reg[instruction[1]]); |
6 | 437 | break; |
0 | 438 | case OP_LOADK: |
41
70eb0eb5e7e8
Split LVM.run() into LVM.call()/LVM.run()
Matthew Wild <mwild1@gmail.com>
parents:
40
diff
changeset
|
439 | var constant = frame.f.constants[INS_Bx(instruction)]; |
73
6b43d68abc94
Large overhaul - every LValue (and LBinaryChunk) now has a valid 'vm' property, so we know in which LVM to call it or its metamethods
Matthew Wild <mwild1@gmail.com>
parents:
72
diff
changeset
|
440 | frame.reg[INS_A(instruction)] = new LValue(this, constant.type, constant.value); |
0 | 441 | break; |
28
d14b47c3870f
Support for OP_NEWTABLE, OP_GETTABLE, OP_SETTABLE
Matthew Wild <mwild1@gmail.com>
parents:
27
diff
changeset
|
442 | case OP_NEWTABLE: |
73
6b43d68abc94
Large overhaul - every LValue (and LBinaryChunk) now has a valid 'vm' property, so we know in which LVM to call it or its metamethods
Matthew Wild <mwild1@gmail.com>
parents:
72
diff
changeset
|
443 | frame.reg[INS_A(instruction)] = new LValue(this, "table", {}); |
28
d14b47c3870f
Support for OP_NEWTABLE, OP_GETTABLE, OP_SETTABLE
Matthew Wild <mwild1@gmail.com>
parents:
27
diff
changeset
|
444 | break; |
d14b47c3870f
Support for OP_NEWTABLE, OP_GETTABLE, OP_SETTABLE
Matthew Wild <mwild1@gmail.com>
parents:
27
diff
changeset
|
445 | case OP_GETTABLE: |
d14b47c3870f
Support for OP_NEWTABLE, OP_GETTABLE, OP_SETTABLE
Matthew Wild <mwild1@gmail.com>
parents:
27
diff
changeset
|
446 | var C = INS_C(instruction); |
78
a856f1c3364f
Update all opcodes to use RK() that need it
Matthew Wild <mwild1@gmail.com>
parents:
77
diff
changeset
|
447 | var value = frame.reg[INS_B(instruction)].index(RK(frame, C)).value; |
73
6b43d68abc94
Large overhaul - every LValue (and LBinaryChunk) now has a valid 'vm' property, so we know in which LVM to call it or its metamethods
Matthew Wild <mwild1@gmail.com>
parents:
72
diff
changeset
|
448 | frame.reg[INS_A(instruction)] = this.LValue(value); |
28
d14b47c3870f
Support for OP_NEWTABLE, OP_GETTABLE, OP_SETTABLE
Matthew Wild <mwild1@gmail.com>
parents:
27
diff
changeset
|
449 | break; |
d14b47c3870f
Support for OP_NEWTABLE, OP_GETTABLE, OP_SETTABLE
Matthew Wild <mwild1@gmail.com>
parents:
27
diff
changeset
|
450 | case OP_SETTABLE: |
d14b47c3870f
Support for OP_NEWTABLE, OP_GETTABLE, OP_SETTABLE
Matthew Wild <mwild1@gmail.com>
parents:
27
diff
changeset
|
451 | var C = INS_C(instruction); |
d14b47c3870f
Support for OP_NEWTABLE, OP_GETTABLE, OP_SETTABLE
Matthew Wild <mwild1@gmail.com>
parents:
27
diff
changeset
|
452 | var B = INS_B(instruction); |
85
25470393fe74
Fix OP_SETTABLE to use RK() helper
Matthew Wild <mwild1@gmail.com>
parents:
83
diff
changeset
|
453 | frame.reg[INS_A(instruction)].setIndex(RK(frame, B), RK(frame, C)); |
28
d14b47c3870f
Support for OP_NEWTABLE, OP_GETTABLE, OP_SETTABLE
Matthew Wild <mwild1@gmail.com>
parents:
27
diff
changeset
|
454 | break; |
0 | 455 | case OP_CALL: |
49
052bd6e8daf6
Give LValue precall() and call() methods, give functions a vm property.
Matthew Wild <mwild1@gmail.com>
parents:
48
diff
changeset
|
456 | var f = frame.reg[INS_A(instruction)].precall(); // return JS or LValue |
63
be8bcd01409b
New interface for native Javascript functions called from Lua
Matthew Wild <mwild1@gmail.com>
parents:
62
diff
changeset
|
457 | var A = INS_A(instruction), B = INS_B(instruction), C = INS_C(instruction); |
be8bcd01409b
New interface for native Javascript functions called from Lua
Matthew Wild <mwild1@gmail.com>
parents:
62
diff
changeset
|
458 | var undefined; |
45
4d2cf0b5235d
Backed out changeset 741b953fcc5f (premature optimisations == bad)
Matthew Wild <mwild1@gmail.com>
parents:
42
diff
changeset
|
459 | var args = frame.reg.slice(A+1, B==0?undefined:(A+B)); |
38
ba347b4b655f
Initialise all stack slots to nil when calling a chunk
Matthew Wild <mwild1@gmail.com>
parents:
37
diff
changeset
|
460 | for(var i=args.length+1;i<f.maxStackSize;i++) |
73
6b43d68abc94
Large overhaul - every LValue (and LBinaryChunk) now has a valid 'vm' property, so we know in which LVM to call it or its metamethods
Matthew Wild <mwild1@gmail.com>
parents:
72
diff
changeset
|
461 | args[i] = new LValue(this, "nil", null); |
2
253863ece36f
Implement OP_MOVE, OP_LOADNIL and OP_RETURN. Also change the way OP_CALL is implemented, and update the test code with a more complicated (kind of) sample.
Matthew Wild <mwild1@gmail.com>
parents:
1
diff
changeset
|
462 | if(typeof(f) == "function") |
253863ece36f
Implement OP_MOVE, OP_LOADNIL and OP_RETURN. Also change the way OP_CALL is implemented, and update the test code with a more complicated (kind of) sample.
Matthew Wild <mwild1@gmail.com>
parents:
1
diff
changeset
|
463 | { |
253863ece36f
Implement OP_MOVE, OP_LOADNIL and OP_RETURN. Also change the way OP_CALL is implemented, and update the test code with a more complicated (kind of) sample.
Matthew Wild <mwild1@gmail.com>
parents:
1
diff
changeset
|
464 | // JS native function |
73
6b43d68abc94
Large overhaul - every LValue (and LBinaryChunk) now has a valid 'vm' property, so we know in which LVM to call it or its metamethods
Matthew Wild <mwild1@gmail.com>
parents:
72
diff
changeset
|
465 | var ret = this.call(f, args); |
79
94c0441b7321
Fix native function return values for the new calling interface
Matthew Wild <mwild1@gmail.com>
parents:
78
diff
changeset
|
466 | // Insert ret to reg starting at R(A), with C-1 limit |
94c0441b7321
Fix native function return values for the new calling interface
Matthew Wild <mwild1@gmail.com>
parents:
78
diff
changeset
|
467 | var nresults = ret.length; |
94c0441b7321
Fix native function return values for the new calling interface
Matthew Wild <mwild1@gmail.com>
parents:
78
diff
changeset
|
468 | var nexpected; |
94c0441b7321
Fix native function return values for the new calling interface
Matthew Wild <mwild1@gmail.com>
parents:
78
diff
changeset
|
469 | if(C == 0) |
63
be8bcd01409b
New interface for native Javascript functions called from Lua
Matthew Wild <mwild1@gmail.com>
parents:
62
diff
changeset
|
470 | { |
79
94c0441b7321
Fix native function return values for the new calling interface
Matthew Wild <mwild1@gmail.com>
parents:
78
diff
changeset
|
471 | nexpected = nresults; |
94c0441b7321
Fix native function return values for the new calling interface
Matthew Wild <mwild1@gmail.com>
parents:
78
diff
changeset
|
472 | frame.reg = frame.reg.slice(0, A+nexpected); |
94c0441b7321
Fix native function return values for the new calling interface
Matthew Wild <mwild1@gmail.com>
parents:
78
diff
changeset
|
473 | } |
94c0441b7321
Fix native function return values for the new calling interface
Matthew Wild <mwild1@gmail.com>
parents:
78
diff
changeset
|
474 | else |
94c0441b7321
Fix native function return values for the new calling interface
Matthew Wild <mwild1@gmail.com>
parents:
78
diff
changeset
|
475 | nexpected = C-1; |
94c0441b7321
Fix native function return values for the new calling interface
Matthew Wild <mwild1@gmail.com>
parents:
78
diff
changeset
|
476 | for(var i = 0;;i++) |
94c0441b7321
Fix native function return values for the new calling interface
Matthew Wild <mwild1@gmail.com>
parents:
78
diff
changeset
|
477 | { |
94c0441b7321
Fix native function return values for the new calling interface
Matthew Wild <mwild1@gmail.com>
parents:
78
diff
changeset
|
478 | if(i < nresults) |
94c0441b7321
Fix native function return values for the new calling interface
Matthew Wild <mwild1@gmail.com>
parents:
78
diff
changeset
|
479 | frame.reg[A+i] = ret[i]; |
94c0441b7321
Fix native function return values for the new calling interface
Matthew Wild <mwild1@gmail.com>
parents:
78
diff
changeset
|
480 | else if(i < nexpected) |
94c0441b7321
Fix native function return values for the new calling interface
Matthew Wild <mwild1@gmail.com>
parents:
78
diff
changeset
|
481 | frame.reg[A+i] = new LValue(this, "nil", null); |
63
be8bcd01409b
New interface for native Javascript functions called from Lua
Matthew Wild <mwild1@gmail.com>
parents:
62
diff
changeset
|
482 | else |
79
94c0441b7321
Fix native function return values for the new calling interface
Matthew Wild <mwild1@gmail.com>
parents:
78
diff
changeset
|
483 | break; |
63
be8bcd01409b
New interface for native Javascript functions called from Lua
Matthew Wild <mwild1@gmail.com>
parents:
62
diff
changeset
|
484 | } |
2
253863ece36f
Implement OP_MOVE, OP_LOADNIL and OP_RETURN. Also change the way OP_CALL is implemented, and update the test code with a more complicated (kind of) sample.
Matthew Wild <mwild1@gmail.com>
parents:
1
diff
changeset
|
485 | } |
253863ece36f
Implement OP_MOVE, OP_LOADNIL and OP_RETURN. Also change the way OP_CALL is implemented, and update the test code with a more complicated (kind of) sample.
Matthew Wild <mwild1@gmail.com>
parents:
1
diff
changeset
|
486 | else |
253863ece36f
Implement OP_MOVE, OP_LOADNIL and OP_RETURN. Also change the way OP_CALL is implemented, and update the test code with a more complicated (kind of) sample.
Matthew Wild <mwild1@gmail.com>
parents:
1
diff
changeset
|
487 | { |
253863ece36f
Implement OP_MOVE, OP_LOADNIL and OP_RETURN. Also change the way OP_CALL is implemented, and update the test code with a more complicated (kind of) sample.
Matthew Wild <mwild1@gmail.com>
parents:
1
diff
changeset
|
488 | // Lua function |
41
70eb0eb5e7e8
Split LVM.run() into LVM.call()/LVM.run()
Matthew Wild <mwild1@gmail.com>
parents:
40
diff
changeset
|
489 | frame = {f:f,pc:0,reg:args, |
51
b429e7a73de7
More reliable detection of when we're at a native/Lua call boundary
Matthew Wild <mwild1@gmail.com>
parents:
50
diff
changeset
|
490 | retAt:INS_A(instruction),retCount:INS_C(instruction), |
b429e7a73de7
More reliable detection of when we're at a native/Lua call boundary
Matthew Wild <mwild1@gmail.com>
parents:
50
diff
changeset
|
491 | entry:false}; |
41
70eb0eb5e7e8
Split LVM.run() into LVM.call()/LVM.run()
Matthew Wild <mwild1@gmail.com>
parents:
40
diff
changeset
|
492 | this.callstack.push(frame); |
2
253863ece36f
Implement OP_MOVE, OP_LOADNIL and OP_RETURN. Also change the way OP_CALL is implemented, and update the test code with a more complicated (kind of) sample.
Matthew Wild <mwild1@gmail.com>
parents:
1
diff
changeset
|
493 | } |
0 | 494 | break; |
15
5240eaff785f
Implement basic OP_CLOSURE (no support for upvalues yet)
Matthew Wild <mwild1@gmail.com>
parents:
14
diff
changeset
|
495 | case OP_CLOSURE: |
5240eaff785f
Implement basic OP_CLOSURE (no support for upvalues yet)
Matthew Wild <mwild1@gmail.com>
parents:
14
diff
changeset
|
496 | var prototype_id = INS_Bx(instruction); |
41
70eb0eb5e7e8
Split LVM.run() into LVM.call()/LVM.run()
Matthew Wild <mwild1@gmail.com>
parents:
40
diff
changeset
|
497 | var chunk = frame.f.chunk.prototypes[prototype_id]; |
43
ecfa7896af35
Give LFunctions a vm property
Matthew Wild <mwild1@gmail.com>
parents:
42
diff
changeset
|
498 | var f = new LFunction(this, chunk, frame.f.environment); |
73
6b43d68abc94
Large overhaul - every LValue (and LBinaryChunk) now has a valid 'vm' property, so we know in which LVM to call it or its metamethods
Matthew Wild <mwild1@gmail.com>
parents:
72
diff
changeset
|
499 | frame.reg[INS_A(instruction)] = new LValue(this, "function", f); |
20
977ae93f612c
Support for upvalues in functions \o/ implemented OP_GETUPVAL, and a stub for OP_SETUPVAL.
Matthew Wild <mwild1@gmail.com>
parents:
19
diff
changeset
|
500 | for(var i=0;i<chunk.numUpvalues;i++) |
977ae93f612c
Support for upvalues in functions \o/ implemented OP_GETUPVAL, and a stub for OP_SETUPVAL.
Matthew Wild <mwild1@gmail.com>
parents:
19
diff
changeset
|
501 | { |
45
4d2cf0b5235d
Backed out changeset 741b953fcc5f (premature optimisations == bad)
Matthew Wild <mwild1@gmail.com>
parents:
42
diff
changeset
|
502 | var upval_instruction = frame.f.instructions[frame.pc++]; |
20
977ae93f612c
Support for upvalues in functions \o/ implemented OP_GETUPVAL, and a stub for OP_SETUPVAL.
Matthew Wild <mwild1@gmail.com>
parents:
19
diff
changeset
|
503 | switch(INS_OPCODE(upval_instruction)) |
977ae93f612c
Support for upvalues in functions \o/ implemented OP_GETUPVAL, and a stub for OP_SETUPVAL.
Matthew Wild <mwild1@gmail.com>
parents:
19
diff
changeset
|
504 | { |
977ae93f612c
Support for upvalues in functions \o/ implemented OP_GETUPVAL, and a stub for OP_SETUPVAL.
Matthew Wild <mwild1@gmail.com>
parents:
19
diff
changeset
|
505 | case OP_MOVE: |
45
4d2cf0b5235d
Backed out changeset 741b953fcc5f (premature optimisations == bad)
Matthew Wild <mwild1@gmail.com>
parents:
42
diff
changeset
|
506 | f.upvalues[i] = frame.reg[INS_B(upval_instruction)]; |
20
977ae93f612c
Support for upvalues in functions \o/ implemented OP_GETUPVAL, and a stub for OP_SETUPVAL.
Matthew Wild <mwild1@gmail.com>
parents:
19
diff
changeset
|
507 | break; |
977ae93f612c
Support for upvalues in functions \o/ implemented OP_GETUPVAL, and a stub for OP_SETUPVAL.
Matthew Wild <mwild1@gmail.com>
parents:
19
diff
changeset
|
508 | case OP_GETUPVAL: |
41
70eb0eb5e7e8
Split LVM.run() into LVM.call()/LVM.run()
Matthew Wild <mwild1@gmail.com>
parents:
40
diff
changeset
|
509 | f.upvalues[i] = frame.f.upvalues[INS_B(upval_instruction)]; |
20
977ae93f612c
Support for upvalues in functions \o/ implemented OP_GETUPVAL, and a stub for OP_SETUPVAL.
Matthew Wild <mwild1@gmail.com>
parents:
19
diff
changeset
|
510 | break; |
977ae93f612c
Support for upvalues in functions \o/ implemented OP_GETUPVAL, and a stub for OP_SETUPVAL.
Matthew Wild <mwild1@gmail.com>
parents:
19
diff
changeset
|
511 | default: |
977ae93f612c
Support for upvalues in functions \o/ implemented OP_GETUPVAL, and a stub for OP_SETUPVAL.
Matthew Wild <mwild1@gmail.com>
parents:
19
diff
changeset
|
512 | throw "Invalid upvalue opcode following OP_CLOSURE"; |
977ae93f612c
Support for upvalues in functions \o/ implemented OP_GETUPVAL, and a stub for OP_SETUPVAL.
Matthew Wild <mwild1@gmail.com>
parents:
19
diff
changeset
|
513 | } |
977ae93f612c
Support for upvalues in functions \o/ implemented OP_GETUPVAL, and a stub for OP_SETUPVAL.
Matthew Wild <mwild1@gmail.com>
parents:
19
diff
changeset
|
514 | } |
15
5240eaff785f
Implement basic OP_CLOSURE (no support for upvalues yet)
Matthew Wild <mwild1@gmail.com>
parents:
14
diff
changeset
|
515 | break; |
0 | 516 | case OP_RETURN: |
19
8c9c1752272b
OP_RETURN: Support for return values from Lua functions \o/
Matthew Wild <mwild1@gmail.com>
parents:
18
diff
changeset
|
517 | var oldFrame = this.callstack.pop(); |
41
70eb0eb5e7e8
Split LVM.run() into LVM.call()/LVM.run()
Matthew Wild <mwild1@gmail.com>
parents:
40
diff
changeset
|
518 | frame = this.callstack[this.callstack.length-1]; |
47
b8c4273edbbb
Support for return values from LVM.call()
Matthew Wild <mwild1@gmail.com>
parents:
46
diff
changeset
|
519 | var rets; |
b8c4273edbbb
Support for return values from LVM.call()
Matthew Wild <mwild1@gmail.com>
parents:
46
diff
changeset
|
520 | if(INS_B(instruction) == 0) |
b8c4273edbbb
Support for return values from LVM.call()
Matthew Wild <mwild1@gmail.com>
parents:
46
diff
changeset
|
521 | rets = oldFrame.reg.slice(INS_A(instruction)); |
b8c4273edbbb
Support for return values from LVM.call()
Matthew Wild <mwild1@gmail.com>
parents:
46
diff
changeset
|
522 | else |
b8c4273edbbb
Support for return values from LVM.call()
Matthew Wild <mwild1@gmail.com>
parents:
46
diff
changeset
|
523 | rets = oldFrame.reg.slice(INS_A(instruction),INS_A(instruction)+(INS_B(instruction)-1)); |
51
b429e7a73de7
More reliable detection of when we're at a native/Lua call boundary
Matthew Wild <mwild1@gmail.com>
parents:
50
diff
changeset
|
524 | if(!oldFrame.entry) |
19
8c9c1752272b
OP_RETURN: Support for return values from Lua functions \o/
Matthew Wild <mwild1@gmail.com>
parents:
18
diff
changeset
|
525 | { |
8c9c1752272b
OP_RETURN: Support for return values from Lua functions \o/
Matthew Wild <mwild1@gmail.com>
parents:
18
diff
changeset
|
526 | var i; |
64
77552f3c2c39
Correct off-by-one in return value limits
Matthew Wild <mwild1@gmail.com>
parents:
63
diff
changeset
|
527 | for(i=0;(oldFrame.retCount == 0||i<(oldFrame.retCount-1))&&i<rets.length;i++) |
45
4d2cf0b5235d
Backed out changeset 741b953fcc5f (premature optimisations == bad)
Matthew Wild <mwild1@gmail.com>
parents:
42
diff
changeset
|
528 | frame.reg[oldFrame.retAt+i] = rets[i]; |
4d2cf0b5235d
Backed out changeset 741b953fcc5f (premature optimisations == bad)
Matthew Wild <mwild1@gmail.com>
parents:
42
diff
changeset
|
529 | if(oldFrame.retAt+i<frame.reg.length) |
65
134ddfbb2005
splice != slice. Dear Javascript, this is only one reason for why I don't like you.
Matthew Wild <mwild1@gmail.com>
parents:
64
diff
changeset
|
530 | frame.reg.slice(0,oldFrame.retAt+i); |
19
8c9c1752272b
OP_RETURN: Support for return values from Lua functions \o/
Matthew Wild <mwild1@gmail.com>
parents:
18
diff
changeset
|
531 | } |
47
b8c4273edbbb
Support for return values from LVM.call()
Matthew Wild <mwild1@gmail.com>
parents:
46
diff
changeset
|
532 | else |
b8c4273edbbb
Support for return values from LVM.call()
Matthew Wild <mwild1@gmail.com>
parents:
46
diff
changeset
|
533 | return rets; |
0 | 534 | break; |
36 | 535 | case OP_SELF: |
45
4d2cf0b5235d
Backed out changeset 741b953fcc5f (premature optimisations == bad)
Matthew Wild <mwild1@gmail.com>
parents:
42
diff
changeset
|
536 | var table = frame.reg[INS_B(instruction)]; |
4d2cf0b5235d
Backed out changeset 741b953fcc5f (premature optimisations == bad)
Matthew Wild <mwild1@gmail.com>
parents:
42
diff
changeset
|
537 | frame.reg[INS_A(instruction)+1] = table; |
36 | 538 | var C = INS_C(instruction); |
78
a856f1c3364f
Update all opcodes to use RK() that need it
Matthew Wild <mwild1@gmail.com>
parents:
77
diff
changeset
|
539 | frame.reg[INS_A(instruction)] = table.index(RK(frame, C)); |
36 | 540 | break; |
34
2c3d73c76d0f
OP_FORPREP, OP_FORLOOP: Support for numerical for loops
Matthew Wild <mwild1@gmail.com>
parents:
33
diff
changeset
|
541 | case OP_FORPREP: |
41
70eb0eb5e7e8
Split LVM.run() into LVM.call()/LVM.run()
Matthew Wild <mwild1@gmail.com>
parents:
40
diff
changeset
|
542 | frame.pc+=(INS_sBx(instruction)); |
34
2c3d73c76d0f
OP_FORPREP, OP_FORLOOP: Support for numerical for loops
Matthew Wild <mwild1@gmail.com>
parents:
33
diff
changeset
|
543 | var A = INS_A(instruction); |
45
4d2cf0b5235d
Backed out changeset 741b953fcc5f (premature optimisations == bad)
Matthew Wild <mwild1@gmail.com>
parents:
42
diff
changeset
|
544 | frame.reg[A].value -= frame.reg[A+2].value; |
73
6b43d68abc94
Large overhaul - every LValue (and LBinaryChunk) now has a valid 'vm' property, so we know in which LVM to call it or its metamethods
Matthew Wild <mwild1@gmail.com>
parents:
72
diff
changeset
|
545 | frame.reg[A+3] = new LValue(this, "number", null); |
34
2c3d73c76d0f
OP_FORPREP, OP_FORLOOP: Support for numerical for loops
Matthew Wild <mwild1@gmail.com>
parents:
33
diff
changeset
|
546 | break; |
2c3d73c76d0f
OP_FORPREP, OP_FORLOOP: Support for numerical for loops
Matthew Wild <mwild1@gmail.com>
parents:
33
diff
changeset
|
547 | case OP_FORLOOP: |
2c3d73c76d0f
OP_FORPREP, OP_FORLOOP: Support for numerical for loops
Matthew Wild <mwild1@gmail.com>
parents:
33
diff
changeset
|
548 | var A = INS_A(instruction); |
45
4d2cf0b5235d
Backed out changeset 741b953fcc5f (premature optimisations == bad)
Matthew Wild <mwild1@gmail.com>
parents:
42
diff
changeset
|
549 | var RA = frame.reg[A]; |
4d2cf0b5235d
Backed out changeset 741b953fcc5f (premature optimisations == bad)
Matthew Wild <mwild1@gmail.com>
parents:
42
diff
changeset
|
550 | RA.value += frame.reg[A+2].value; |
4d2cf0b5235d
Backed out changeset 741b953fcc5f (premature optimisations == bad)
Matthew Wild <mwild1@gmail.com>
parents:
42
diff
changeset
|
551 | if(RA.value <= frame.reg[A+1].value) |
34
2c3d73c76d0f
OP_FORPREP, OP_FORLOOP: Support for numerical for loops
Matthew Wild <mwild1@gmail.com>
parents:
33
diff
changeset
|
552 | { |
41
70eb0eb5e7e8
Split LVM.run() into LVM.call()/LVM.run()
Matthew Wild <mwild1@gmail.com>
parents:
40
diff
changeset
|
553 | frame.pc += INS_sBx(instruction); |
45
4d2cf0b5235d
Backed out changeset 741b953fcc5f (premature optimisations == bad)
Matthew Wild <mwild1@gmail.com>
parents:
42
diff
changeset
|
554 | frame.reg[A+3].value = RA.value; |
34
2c3d73c76d0f
OP_FORPREP, OP_FORLOOP: Support for numerical for loops
Matthew Wild <mwild1@gmail.com>
parents:
33
diff
changeset
|
555 | } |
2c3d73c76d0f
OP_FORPREP, OP_FORLOOP: Support for numerical for loops
Matthew Wild <mwild1@gmail.com>
parents:
33
diff
changeset
|
556 | break; |
40
3a074ec1790f
Implement OP_TEST and OP_JMP
Matthew Wild <mwild1@gmail.com>
parents:
39
diff
changeset
|
557 | case OP_TEST: |
45
4d2cf0b5235d
Backed out changeset 741b953fcc5f (premature optimisations == bad)
Matthew Wild <mwild1@gmail.com>
parents:
42
diff
changeset
|
558 | var RA = frame.reg[INS_A(instruction)]; |
40
3a074ec1790f
Implement OP_TEST and OP_JMP
Matthew Wild <mwild1@gmail.com>
parents:
39
diff
changeset
|
559 | var RA_bool = RA.type == "nil" || (RA.type == "boolean" && RA.value == false); |
3a074ec1790f
Implement OP_TEST and OP_JMP
Matthew Wild <mwild1@gmail.com>
parents:
39
diff
changeset
|
560 | if(RA_bool == (INS_C(instruction)!=0)) |
41
70eb0eb5e7e8
Split LVM.run() into LVM.call()/LVM.run()
Matthew Wild <mwild1@gmail.com>
parents:
40
diff
changeset
|
561 | frame.pc++; |
40
3a074ec1790f
Implement OP_TEST and OP_JMP
Matthew Wild <mwild1@gmail.com>
parents:
39
diff
changeset
|
562 | break; |
59 | 563 | case OP_TESTSET: |
564 | var RB = frame.reg[INS_B(instruction)]; | |
565 | var RB_bool = RB.type == "nil" || (RB.type == "boolean" && RB.value == false); | |
566 | if(RB_bool == (INS_C(instruction)!=0)) | |
567 | frame.pc++; | |
568 | else | |
569 | frame.reg[INS_A(instruction)] = RB; | |
570 | break; | |
40
3a074ec1790f
Implement OP_TEST and OP_JMP
Matthew Wild <mwild1@gmail.com>
parents:
39
diff
changeset
|
571 | case OP_JMP: |
41
70eb0eb5e7e8
Split LVM.run() into LVM.call()/LVM.run()
Matthew Wild <mwild1@gmail.com>
parents:
40
diff
changeset
|
572 | frame.pc+=INS_sBx(instruction); |
40
3a074ec1790f
Implement OP_TEST and OP_JMP
Matthew Wild <mwild1@gmail.com>
parents:
39
diff
changeset
|
573 | break; |
58
40d0b0429428
Implement OP_ADD, OP_SUB, OP_LT
Matthew Wild <mwild1@gmail.com>
parents:
56
diff
changeset
|
574 | case OP_ADD: |
77
ab8ff064d808
Add new RK() helper and fix OP_ADD to use it (so it loads constants properly)
Matthew Wild <mwild1@gmail.com>
parents:
76
diff
changeset
|
575 | var RB = RK(frame, INS_B(instruction)); |
ab8ff064d808
Add new RK() helper and fix OP_ADD to use it (so it loads constants properly)
Matthew Wild <mwild1@gmail.com>
parents:
76
diff
changeset
|
576 | var RC = RK(frame, INS_C(instruction)); |
72
dc73a60b3c06
Give LValue an add() method, to eventually respect metamethods
Matthew Wild <mwild1@gmail.com>
parents:
71
diff
changeset
|
577 | frame.reg[INS_A(instruction)] = RB.add(RC); |
58
40d0b0429428
Implement OP_ADD, OP_SUB, OP_LT
Matthew Wild <mwild1@gmail.com>
parents:
56
diff
changeset
|
578 | break; |
40d0b0429428
Implement OP_ADD, OP_SUB, OP_LT
Matthew Wild <mwild1@gmail.com>
parents:
56
diff
changeset
|
579 | case OP_SUB: |
95
c461e20b609a
Fix OP_SUB to use RK() too...
Matthew Wild <mwild1@gmail.com>
parents:
93
diff
changeset
|
580 | var RB = RK(frame, INS_B(instruction)); |
c461e20b609a
Fix OP_SUB to use RK() too...
Matthew Wild <mwild1@gmail.com>
parents:
93
diff
changeset
|
581 | var RC = RK(frame, INS_C(instruction)); |
73
6b43d68abc94
Large overhaul - every LValue (and LBinaryChunk) now has a valid 'vm' property, so we know in which LVM to call it or its metamethods
Matthew Wild <mwild1@gmail.com>
parents:
72
diff
changeset
|
582 | frame.reg[INS_A(instruction)] = new LValue(this, "number", RB.value - RC.value); |
58
40d0b0429428
Implement OP_ADD, OP_SUB, OP_LT
Matthew Wild <mwild1@gmail.com>
parents:
56
diff
changeset
|
583 | break; |
99
633e414a496c
Implement OP_DIV (no metamethod yet)
Matthew Wild <mwild1@gmail.com>
parents:
98
diff
changeset
|
584 | case OP_DIV: |
633e414a496c
Implement OP_DIV (no metamethod yet)
Matthew Wild <mwild1@gmail.com>
parents:
98
diff
changeset
|
585 | var RB = RK(frame, INS_B(instruction)); |
633e414a496c
Implement OP_DIV (no metamethod yet)
Matthew Wild <mwild1@gmail.com>
parents:
98
diff
changeset
|
586 | var RC = RK(frame, INS_C(instruction)); |
633e414a496c
Implement OP_DIV (no metamethod yet)
Matthew Wild <mwild1@gmail.com>
parents:
98
diff
changeset
|
587 | frame.reg[INS_A(instruction)] = new LValue(this, "number", RB.value / RC.value); |
633e414a496c
Implement OP_DIV (no metamethod yet)
Matthew Wild <mwild1@gmail.com>
parents:
98
diff
changeset
|
588 | break; |
89
a9cef9e01154
Fix OP_LT to respect A, and move OP_EQ to live next to it in the switch() for readability
Matthew Wild <mwild1@gmail.com>
parents:
88
diff
changeset
|
589 | case OP_EQ: |
a9cef9e01154
Fix OP_LT to respect A, and move OP_EQ to live next to it in the switch() for readability
Matthew Wild <mwild1@gmail.com>
parents:
88
diff
changeset
|
590 | var A = INS_A(instruction); |
88 | 591 | var RB = RK(frame, INS_B(instruction)); |
592 | var RC = RK(frame, INS_C(instruction)); | |
89
a9cef9e01154
Fix OP_LT to respect A, and move OP_EQ to live next to it in the switch() for readability
Matthew Wild <mwild1@gmail.com>
parents:
88
diff
changeset
|
593 | if(RB.equals(RC) != (A!=0)) |
a9cef9e01154
Fix OP_LT to respect A, and move OP_EQ to live next to it in the switch() for readability
Matthew Wild <mwild1@gmail.com>
parents:
88
diff
changeset
|
594 | frame.pc++; |
a9cef9e01154
Fix OP_LT to respect A, and move OP_EQ to live next to it in the switch() for readability
Matthew Wild <mwild1@gmail.com>
parents:
88
diff
changeset
|
595 | break; |
a9cef9e01154
Fix OP_LT to respect A, and move OP_EQ to live next to it in the switch() for readability
Matthew Wild <mwild1@gmail.com>
parents:
88
diff
changeset
|
596 | case OP_LT: |
a9cef9e01154
Fix OP_LT to respect A, and move OP_EQ to live next to it in the switch() for readability
Matthew Wild <mwild1@gmail.com>
parents:
88
diff
changeset
|
597 | var A = INS_A(instruction); |
a9cef9e01154
Fix OP_LT to respect A, and move OP_EQ to live next to it in the switch() for readability
Matthew Wild <mwild1@gmail.com>
parents:
88
diff
changeset
|
598 | var RB = RK(frame, INS_B(instruction)); |
a9cef9e01154
Fix OP_LT to respect A, and move OP_EQ to live next to it in the switch() for readability
Matthew Wild <mwild1@gmail.com>
parents:
88
diff
changeset
|
599 | var RC = RK(frame, INS_C(instruction)); |
a9cef9e01154
Fix OP_LT to respect A, and move OP_EQ to live next to it in the switch() for readability
Matthew Wild <mwild1@gmail.com>
parents:
88
diff
changeset
|
600 | if(RB.value < RC.value != (A!=0)) |
58
40d0b0429428
Implement OP_ADD, OP_SUB, OP_LT
Matthew Wild <mwild1@gmail.com>
parents:
56
diff
changeset
|
601 | frame.pc++; |
40d0b0429428
Implement OP_ADD, OP_SUB, OP_LT
Matthew Wild <mwild1@gmail.com>
parents:
56
diff
changeset
|
602 | break; |
90
40edbc05fbb9
Implement OP_LE (no metamethod yet)
Matthew Wild <mwild1@gmail.com>
parents:
89
diff
changeset
|
603 | case OP_LE: |
40edbc05fbb9
Implement OP_LE (no metamethod yet)
Matthew Wild <mwild1@gmail.com>
parents:
89
diff
changeset
|
604 | var A = INS_A(instruction); |
40edbc05fbb9
Implement OP_LE (no metamethod yet)
Matthew Wild <mwild1@gmail.com>
parents:
89
diff
changeset
|
605 | var RB = RK(frame, INS_B(instruction)); |
40edbc05fbb9
Implement OP_LE (no metamethod yet)
Matthew Wild <mwild1@gmail.com>
parents:
89
diff
changeset
|
606 | var RC = RK(frame, INS_C(instruction)); |
40edbc05fbb9
Implement OP_LE (no metamethod yet)
Matthew Wild <mwild1@gmail.com>
parents:
89
diff
changeset
|
607 | if(RB.value <= RC.value != (A!=0)) |
40edbc05fbb9
Implement OP_LE (no metamethod yet)
Matthew Wild <mwild1@gmail.com>
parents:
89
diff
changeset
|
608 | frame.pc++; |
40edbc05fbb9
Implement OP_LE (no metamethod yet)
Matthew Wild <mwild1@gmail.com>
parents:
89
diff
changeset
|
609 | break; |
0 | 610 | default: |
11
1b3267149cbd
Throw error on unhandled opcodes
Matthew Wild <mwild1@gmail.com>
parents:
10
diff
changeset
|
611 | throw "Unhandled opcode: "+INS_OPCODE(instruction); |
0 | 612 | } |
613 | } | |
96
e4324d9a824c
Add LVM().registerLib(env, name, lib) to register a table of native functions to an environment.
Matthew Wild <mwild1@gmail.com>
parents:
95
diff
changeset
|
614 | }, |
e4324d9a824c
Add LVM().registerLib(env, name, lib) to register a table of native functions to an environment.
Matthew Wild <mwild1@gmail.com>
parents:
95
diff
changeset
|
615 | registerLib: function (env, name, lib) |
e4324d9a824c
Add LVM().registerLib(env, name, lib) to register a table of native functions to an environment.
Matthew Wild <mwild1@gmail.com>
parents:
95
diff
changeset
|
616 | { |
e4324d9a824c
Add LVM().registerLib(env, name, lib) to register a table of native functions to an environment.
Matthew Wild <mwild1@gmail.com>
parents:
95
diff
changeset
|
617 | var t; |
e4324d9a824c
Add LVM().registerLib(env, name, lib) to register a table of native functions to an environment.
Matthew Wild <mwild1@gmail.com>
parents:
95
diff
changeset
|
618 | if(name) |
e4324d9a824c
Add LVM().registerLib(env, name, lib) to register a table of native functions to an environment.
Matthew Wild <mwild1@gmail.com>
parents:
95
diff
changeset
|
619 | { |
e4324d9a824c
Add LVM().registerLib(env, name, lib) to register a table of native functions to an environment.
Matthew Wild <mwild1@gmail.com>
parents:
95
diff
changeset
|
620 | t = this.LValue({}); // Create env[name] and put fns in there |
e4324d9a824c
Add LVM().registerLib(env, name, lib) to register a table of native functions to an environment.
Matthew Wild <mwild1@gmail.com>
parents:
95
diff
changeset
|
621 | env.setIndex(this.LValue(name), t); |
e4324d9a824c
Add LVM().registerLib(env, name, lib) to register a table of native functions to an environment.
Matthew Wild <mwild1@gmail.com>
parents:
95
diff
changeset
|
622 | } |
e4324d9a824c
Add LVM().registerLib(env, name, lib) to register a table of native functions to an environment.
Matthew Wild <mwild1@gmail.com>
parents:
95
diff
changeset
|
623 | else |
e4324d9a824c
Add LVM().registerLib(env, name, lib) to register a table of native functions to an environment.
Matthew Wild <mwild1@gmail.com>
parents:
95
diff
changeset
|
624 | t = env; // Import directly into env |
e4324d9a824c
Add LVM().registerLib(env, name, lib) to register a table of native functions to an environment.
Matthew Wild <mwild1@gmail.com>
parents:
95
diff
changeset
|
625 | |
e4324d9a824c
Add LVM().registerLib(env, name, lib) to register a table of native functions to an environment.
Matthew Wild <mwild1@gmail.com>
parents:
95
diff
changeset
|
626 | for(var k in lib) |
e4324d9a824c
Add LVM().registerLib(env, name, lib) to register a table of native functions to an environment.
Matthew Wild <mwild1@gmail.com>
parents:
95
diff
changeset
|
627 | t.setIndex(this.LValue(k), this.LValue(lib[k])); |
0 | 628 | } |
629 | }; | |
630 | ||
56
d02c7932cbf2
Move try {} block so it covers more of the VM initialization
Matthew Wild <mwild1@gmail.com>
parents:
55
diff
changeset
|
631 | try{ |
0 | 632 | var testvm = new LVM(); |
2
253863ece36f
Implement OP_MOVE, OP_LOADNIL and OP_RETURN. Also change the way OP_CALL is implemented, and update the test code with a more complicated (kind of) sample.
Matthew Wild <mwild1@gmail.com>
parents:
1
diff
changeset
|
633 | |
9
3f055c9ab80e
Add a bytecode interpreter \o/
Matthew Wild <mwild1@gmail.com>
parents:
8
diff
changeset
|
634 | var fs=require("fs"); |
3f055c9ab80e
Add a bytecode interpreter \o/
Matthew Wild <mwild1@gmail.com>
parents:
8
diff
changeset
|
635 | var sys=require("sys"); |
73
6b43d68abc94
Large overhaul - every LValue (and LBinaryChunk) now has a valid 'vm' property, so we know in which LVM to call it or its metamethods
Matthew Wild <mwild1@gmail.com>
parents:
72
diff
changeset
|
636 | var c = new LBinaryChunk(testvm, fs.readFileSync("luac.out", "binary")); |
9
3f055c9ab80e
Add a bytecode interpreter \o/
Matthew Wild <mwild1@gmail.com>
parents:
8
diff
changeset
|
637 | |
97
80cc68dd8222
Rename default_environment to _G, use registerLib() for baselib and add math lib with 2 ldexp, floor
Matthew Wild <mwild1@gmail.com>
parents:
96
diff
changeset
|
638 | var _G = testvm.LValue({}); |
2
253863ece36f
Implement OP_MOVE, OP_LOADNIL and OP_RETURN. Also change the way OP_CALL is implemented, and update the test code with a more complicated (kind of) sample.
Matthew Wild <mwild1@gmail.com>
parents:
1
diff
changeset
|
639 | |
67
782274d793ac
Formalise the beginnings of a baselib, add setmetatable.
Matthew Wild <mwild1@gmail.com>
parents:
66
diff
changeset
|
640 | // Standard library |
2
253863ece36f
Implement OP_MOVE, OP_LOADNIL and OP_RETURN. Also change the way OP_CALL is implemented, and update the test code with a more complicated (kind of) sample.
Matthew Wild <mwild1@gmail.com>
parents:
1
diff
changeset
|
641 | |
67
782274d793ac
Formalise the beginnings of a baselib, add setmetatable.
Matthew Wild <mwild1@gmail.com>
parents:
66
diff
changeset
|
642 | var baselib = { |
74
a4a6adee1459
New Lua<->native function interface, simpler. Added type() to baselib.
Matthew Wild <mwild1@gmail.com>
parents:
73
diff
changeset
|
643 | print: function () |
67
782274d793ac
Formalise the beginnings of a baselib, add setmetatable.
Matthew Wild <mwild1@gmail.com>
parents:
66
diff
changeset
|
644 | { |
74
a4a6adee1459
New Lua<->native function interface, simpler. Added type() to baselib.
Matthew Wild <mwild1@gmail.com>
parents:
73
diff
changeset
|
645 | var args = Array.prototype.slice.call(arguments); |
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646 | sys.print(args[0].toString()); |
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647 | for(var i = 1; i<args.length; i++) |
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648 | sys.print("\t"+args[i].toString()); |
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649 | sys.print("\n"); |
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650 | return []; |
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651 | }, |
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652 | setmetatable: function (table, metatable) |
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653 | { |
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654 | if(arguments.length!=2) |
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655 | throw "setmetatable expects 2 arguments, got "+arguments.length; |
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656 | |
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657 | table.setMetatable(metatable); |
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658 | return [table]; |
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659 | }, |
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660 | type: function (o) |
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661 | { |
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662 | return [this.LValue(o.type)]; |
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663 | }, |
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664 | assert: function (expr, message) |
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665 | { |
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666 | if(!expr.truth()) |
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667 | throw message; |
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668 | return [expr]; |
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669 | } |
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670 | }; |
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671 | |
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672 | var math = { |
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673 | ldexp: function (m, e) |
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674 | { |
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675 | return [this.LValue(m.value*Math.pow(2, e.value))]; |
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676 | }, |
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677 | floor: function (x) |
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678 | { |
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679 | return [this.LValue(Math.floor(x.value))]; |
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680 | } |
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681 | }; |
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682 | |
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683 | testvm.registerLib(_G, null, baselib); |
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684 | testvm.registerLib(_G, "math", math); |
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685 | |
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686 | // Metatable on environment to print out nil global accesses |
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687 | var mt = testvm.LValue({}); |
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688 | mt.setIndex( |
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689 | testvm.LValue("__index"), |
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690 | testvm.LValue(function (t, k) { sys.puts("Access of nil global: "+k); }) |
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691 | ); |
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692 | _G.setMetatable(mt); |
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693 | |
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694 | |
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695 | var f = new LFunction(testvm, c, _G); |
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696 | |
48 | 697 | var ret = testvm.call(f); |
698 | if(ret) | |
699 | sys.puts("Returned: "+sys.inspect(ret)); | |
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700 | } |
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701 | catch(e) |
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702 | { |
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703 | var currframe = testvm.callstack[testvm.callstack.length-1]; |
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704 | if(currframe) |
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705 | { |
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706 | var currfunc = currframe.f; |
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707 | sys.print("lvm.js: "+(currfunc.sourceName||"=<unknown>").substr(1)+":"+(currfunc.sourceLines[currframe.pc]||"<unknown>")+": "); |
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708 | } |
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709 | sys.puts(e); |
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710 | if(typeof(e) == "object" && "stack" in e) |
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711 | sys.puts(e.stack); |
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712 | process.exit(1); |
5 | 713 | } |