1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
|
/* Copyright (c) 2003-2005 MySQL AB
Use is subject to license terms
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; version 2 of the License.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1335 USA */
#ifndef NDB_INTERPRETER_HPP
#define NDB_INTERPRETER_HPP
#include <ndb_types.h>
class Interpreter {
public:
inline static Uint32 mod4(Uint32 len){
return len + ((4 - (len & 3)) & 3);
}
/**
* General Mnemonic format
*
* i = Instruction - 5 Bits ( 0 - 5 ) max 63
* x = Register 1 - 3 Bits ( 6 - 8 ) max 7
* y = Register 2 - 3 Bits ( 9 -11 ) max 7
* b = Branch offset (only branches)
*
* 1111111111222222222233
* 01234567890123456789012345678901
* iiiiiixxxyyy bbbbbbbbbbbbbbbb
*
*
*/
/**
* Instructions
*/
STATIC_CONST( READ_ATTR_INTO_REG = 1 );
STATIC_CONST( WRITE_ATTR_FROM_REG = 2 );
STATIC_CONST( LOAD_CONST_NULL = 3 );
STATIC_CONST( LOAD_CONST16 = 4 );
STATIC_CONST( LOAD_CONST32 = 5 );
STATIC_CONST( LOAD_CONST64 = 6 );
STATIC_CONST( ADD_REG_REG = 7 );
STATIC_CONST( SUB_REG_REG = 8 );
STATIC_CONST( BRANCH = 9 );
STATIC_CONST( BRANCH_REG_EQ_NULL = 10 );
STATIC_CONST( BRANCH_REG_NE_NULL = 11 );
STATIC_CONST( BRANCH_EQ_REG_REG = 12 );
STATIC_CONST( BRANCH_NE_REG_REG = 13 );
STATIC_CONST( BRANCH_LT_REG_REG = 14 );
STATIC_CONST( BRANCH_LE_REG_REG = 15 );
STATIC_CONST( BRANCH_GT_REG_REG = 16 );
STATIC_CONST( BRANCH_GE_REG_REG = 17 );
STATIC_CONST( EXIT_OK = 18 );
STATIC_CONST( EXIT_REFUSE = 19 );
STATIC_CONST( CALL = 20 );
STATIC_CONST( RETURN = 21 );
STATIC_CONST( EXIT_OK_LAST = 22 );
STATIC_CONST( BRANCH_ATTR_OP_ARG = 23 );
STATIC_CONST( BRANCH_ATTR_EQ_NULL = 24 );
STATIC_CONST( BRANCH_ATTR_NE_NULL = 25 );
/**
* Macros for creating code
*/
static Uint32 Read(Uint32 AttrId, Uint32 Register);
static Uint32 Write(Uint32 AttrId, Uint32 Register);
static Uint32 LoadNull(Uint32 Register);
static Uint32 LoadConst16(Uint32 Register, Uint32 Value);
static Uint32 LoadConst32(Uint32 Register); // Value in next word
static Uint32 LoadConst64(Uint32 Register); // Value in next 2 words
static Uint32 Add(Uint32 DstReg, Uint32 SrcReg1, Uint32 SrcReg2);
static Uint32 Sub(Uint32 DstReg, Uint32 SrcReg1, Uint32 SrcReg2);
static Uint32 Branch(Uint32 Inst, Uint32 Reg1, Uint32 Reg2);
static Uint32 ExitOK();
/**
* Branch string
*
* i = Instruction - 5 Bits ( 0 - 5 ) max 63
* a = Attribute id
* l = Length of string
* b = Branch offset
* t = branch type
* d = Array length diff
* v = Varchar flag
* p = No-blank-padding flag for char compare
*
* 1111111111222222222233
* 01234567890123456789012345678901
* iiiiii ddvtttpbbbbbbbbbbbbbbbb
* aaaaaaaaaaaaaaaallllllllllllllll
* -string.... -
*/
enum UnaryCondition {
IS_NULL = 0,
IS_NOT_NULL = 1
};
enum BinaryCondition {
EQ = 0,
NE = 1,
LT = 2,
LE = 3,
GT = 4,
GE = 5,
LIKE = 6,
NOT_LIKE = 7
};
static Uint32 BranchCol(BinaryCondition cond,
Uint32 arrayLengthDiff, Uint32 varchar, bool nopad);
static Uint32 BranchCol_2(Uint32 AttrId);
static Uint32 BranchCol_2(Uint32 AttrId, Uint32 Len);
static Uint32 getBinaryCondition(Uint32 op1);
static Uint32 getArrayLengthDiff(Uint32 op1);
static Uint32 isVarchar(Uint32 op1);
static Uint32 isNopad(Uint32 op1);
static Uint32 getBranchCol_AttrId(Uint32 op2);
static Uint32 getBranchCol_Len(Uint32 op2);
/**
* Macros for decoding code
*/
static Uint32 getOpCode(Uint32 op);
static Uint32 getReg1(Uint32 op);
static Uint32 getReg2(Uint32 op);
static Uint32 getReg3(Uint32 op);
};
inline
Uint32
Interpreter::Read(Uint32 AttrId, Uint32 Register){
return (AttrId << 16) + (Register << 6) + READ_ATTR_INTO_REG;
}
inline
Uint32
Interpreter::Write(Uint32 AttrId, Uint32 Register){
return (AttrId << 16) + (Register << 6) + WRITE_ATTR_FROM_REG;
}
inline
Uint32
Interpreter::LoadConst16(Uint32 Register, Uint32 Value){
return (Value << 16) + (Register << 6) + LOAD_CONST16;
}
inline
Uint32
Interpreter::LoadConst32(Uint32 Register){
return (Register << 6) + LOAD_CONST32;
}
inline
Uint32
Interpreter::LoadConst64(Uint32 Register){
return (Register << 6) + LOAD_CONST64;
}
inline
Uint32
Interpreter::Add(Uint32 Dcoleg, Uint32 SrcReg1, Uint32 SrcReg2){
return (SrcReg1 << 6) + (SrcReg2 << 9) + (Dcoleg << 16) + ADD_REG_REG;
}
inline
Uint32
Interpreter::Sub(Uint32 Dcoleg, Uint32 SrcReg1, Uint32 SrcReg2){
return (SrcReg1 << 6) + (SrcReg2 << 9) + (Dcoleg << 16) + SUB_REG_REG;
}
inline
Uint32
Interpreter::Branch(Uint32 Inst, Uint32 Reg1, Uint32 Reg2){
return (Reg1 << 9) + (Reg2 << 6) + Inst;
}
inline
Uint32
Interpreter::BranchCol(BinaryCondition cond,
Uint32 arrayLengthDiff,
Uint32 varchar, bool nopad){
//ndbout_c("BranchCol: cond=%d diff=%u varchar=%u nopad=%d",
//cond, arrayLengthDiff, varchar, nopad);
return
BRANCH_ATTR_OP_ARG +
(arrayLengthDiff << 9) +
(varchar << 11) +
(cond << 12) +
(nopad << 15);
}
inline
Uint32
Interpreter::BranchCol_2(Uint32 AttrId, Uint32 Len){
return (AttrId << 16) + Len;
}
inline
Uint32
Interpreter::BranchCol_2(Uint32 AttrId){
return (AttrId << 16);
}
inline
Uint32
Interpreter::getBinaryCondition(Uint32 op){
return (op >> 12) & 0x7;
}
inline
Uint32
Interpreter::getArrayLengthDiff(Uint32 op){
return (op >> 9) & 0x3;
}
inline
Uint32
Interpreter::isVarchar(Uint32 op){
return (op >> 11) & 1;
}
inline
Uint32
Interpreter::isNopad(Uint32 op){
return (op >> 15) & 1;
}
inline
Uint32
Interpreter::getBranchCol_AttrId(Uint32 op){
return (op >> 16) & 0xFFFF;
}
inline
Uint32
Interpreter::getBranchCol_Len(Uint32 op){
return op & 0xFFFF;
}
inline
Uint32
Interpreter::ExitOK(){
return EXIT_OK;
}
inline
Uint32
Interpreter::getOpCode(Uint32 op){
return op & 0x3f;
}
inline
Uint32
Interpreter::getReg1(Uint32 op){
return (op >> 6) & 0x7;
}
inline
Uint32
Interpreter::getReg2(Uint32 op){
return (op >> 9) & 0x7;
}
inline
Uint32
Interpreter::getReg3(Uint32 op){
return (op >> 16) & 0x7;
}
#endif
|
