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
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
|
/**********************************************************************
* pgen.c
* P-Code generation logic
*
* Copyright (C) 2008 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <spudmonkey@racsa.co.cr>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* 3. Neither the name NuttX nor the names of its contributors may be
* used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
**********************************************************************/
/**********************************************************************
* Included Files
**********************************************************************/
#include <stdio.h>
#include <string.h>
#include <errno.h>
#include "config.h" /* Configuration */
#include "keywords.h" /* Standard types */
#include "pdefs.h" /* Common types */
#include "pofflib.h" /* POFF library definitions */
#include "podefs.h" /* Logical opcode definitions */
#include "pedefs.h" /* Error codes */
#include "pinsn32.h" /* 32-bit target INSN opcode definitions */
#include "perr.h" /* Error handling logic */
#include "pinsn.h" /* (to verify prototypes in this file) */
/**********************************************************************
* Definitions
**********************************************************************/
#define INVALID_INCLUDE (-1)
/**********************************************************************
* Global Variables
**********************************************************************/
/* See pas.h */
extern poffHandle_t poffHandle; /* Handle to POFF object */
extern FILE *lstFile; /* LIST file pointer */
extern sint16 level; /* Static nesting level */
/**********************************************************************
* Private Variables
**********************************************************************/
static const ubyte opmap[NUM_OPCODES] =
{
oNOP, /* opNOP */
oNEG, /* opNEG */
oABS, /* opABS */
oINC, /* opINC */
oDEC, /* opDEC */
oNOT, /* opNOT */
oADD, /* opADD */
oSUB, /* opSUB */
oMUL, /* opMUL */
oDIV, /* opDIV */
oMOD, /* opMOD */
oSLL, /* opSLL */
oSRL, /* opSRL */
oSRA, /* opSRA */
oOR, /* opOR */
oAND, /* opAND */
oEQUZ, /* opEQUZ */
oNEQZ, /* opNEQZ */
oLTZ, /* opLTZ */
oGTEZ, /* opGTEZ */
oGTZ, /* opGTZ */
oLTEZ, /* opLTEZ */
oEQU, /* opEQU */
oNEQ, /* opNEQ */
oLT, /* opLT */
oGTE, /* opGTE */
oGT, /* opGT */
oLTE, /* opLTE */
oBIT, /* opBIT */
oLDI, /* opLDI */
oLDIB, /* opLDIB */
oLDIM, /* opLDIM */
oSTI, /* opSTI */
oSTIB, /* opSTIB */
oSTIM, /* opSTIM */
oDUP, /* opDUP */
oPUSHS, /* opPUSHS */
oPOPS, /* opPOPS */
oRET, /* opRET */
oEND, /* opEND */
oFLOAT, /* opFLOAT */
oJEQUZ, /* opJEQUZ */
oJNEQZ, /* opJNEQZ */
oJMP, /* opJMP */
oJEQU, /* opJEQU */
oJNEQ, /* opJNEQ */
oJLT, /* opJLT */
oJGTE, /* opJGTE */
oJGT, /* opJGT */
oJLTE, /* opJLTE */
oLD, /* opLD */
oLDH, /* opLDH */
oLDB, /* opLDB */
oLDM, /* opLDM */
oST, /* opST */
oSTB, /* opSTB */
oSTM, /* opSTM */
oLDX, /* opLDX */
oLDXB, /* opLDXB */
oLDXM, /* opLDXM */
oSTX, /* opSTX */
oSTXB, /* opSTXB */
oSTXM, /* opSTXM */
oLA, /* opLA */
oLAC, /* opLAC */
oPUSH, /* opPUSH */
oINDS, /* opINDS */
oLAX, /* opLAX */
oLIB, /* opLIB */
oLABEL, /* opLABEL */
oPCAL, /* opPCAL */
oLDS, /* opLDS */
oLDSH, /* opLDSH */
oLDSB, /* opLDSB */
oLDSM, /* opLDSM */
oSTS, /* opSTS */
oSTSB, /* opSTSB */
oSTSM, /* opSTSM */
oLDSX, /* opLDSX */
oLDSXB, /* opLDSXB */
oLDSXM, /* opLDSXM */
oSTSX, /* opSTSX */
oSTSXB, /* opSTSXB */
oSTSXM, /* opSTSXM */
oLAS, /* opLAS */
oLASX, /* opLASX */
oSYSIO, /* opSYSIO */
oLINE, /* opLINE */
};
static uint16 g_nCurrentIncludeNumber = INVALID_INCLUDE;
/***********************************************************************
* Private Function Prototypes
***********************************************************************/
/***********************************************************************
* Private Functions
***********************************************************************/
static void
insn32_GenerateSimple(ubyte opcode);
static void
insn32_GenerateDataOperation(ubyte opcode, uint32 data);
static void
insn32_Generate(enum pcode_e opcode, uint32 arg);
/***********************************************************************
* Private Functions
***********************************************************************/
/***********************************************************************/
/* Disassemble an Op-code */
#if CONFIG_DEBUG
static inline void
insn32_DisassemblePCode(ubyte opcode, uint32 arg)
{
OPTYPE op;
op.op = opcode;
op.arg = arg;
insn_DisassemblePCode(lstFile, &op);
}
#else
# define insn32_DisassemblePCode(op,a)
#endif
/***********************************************************************/
static inline void
insn32_DisassembleOpcode(ubyte opcode, uint32 data)
{
#if CONFIG_DEBUG
OPTYPE op;
op.op = opcode;
op.arg = data;
insn32_DisassemblePCode(opcode, 0);
#endif
}
/***********************************************************************/
/* Generate an Op-Code */
static void
insn32_GenerateSimple(ubyte opcode)
{
TRACE(lstFile,"[insn32_GenerateSimple:0x%02x]", opcode);
/* Write the 8-bit opcode */
poffAddProgByte(poffHandle, opcode);
/* Now, add the disassembled PCode to the list file. */
insn32_DisassembleOpcode(opcode, 0);
}
/***********************************************************************/
static void
insn32_GenerateDataOperation(ubyte opcode, uint32 data)
{
union
{
ubyte b[4];
uint32 w;
} udata;
TRACE(lstFile,"[insn32_GenerateDataOperation:0x%02x:0x%07x]", opcode, data);
/* Write the 8-bit opcode */
poffAddProgByte(poffHandle, opcode);
/* Write the 32-bit opcode */
udata.w = data;
(void)poffAddProgByte(poffHandle, udata.b[opB1]);
(void)poffAddProgByte(poffHandle, udata.b[opB2]);
(void)poffAddProgByte(poffHandle, udata.b[opB3]);
(void)poffAddProgByte(poffHandle, udata.b[opB4]);
/* Now, add the disassembled PCode to the list file. */
insn32_DisassembleOpcode(opcode, data);
}
/***********************************************************************/
static void
insn32_Generate(enum pcode_e opcode, uint32 arg)
{
ubyte insn_opcode = opmap[opcode];
TRACE(lstFile,"[insn32_Generate:0x%02x->0x%02x]", opcode, insn_opcode);
if (insn_opcode & o32)
{
insn32_GenerateDataOperation(insn_opcode, arg);
}
else
{
insn32_GenerateSimple(insn_opcode);
/* We ignore the argument... what if one was provided? */
if (arg != 0)
{
warn(eARGIGNORED);
}
}
}
/***********************************************************************
* Public Functions
***********************************************************************/
void
insn_GenerateSimple(enum pcode_e opcode)
{
insn32_Generate(opcode, 0);
}
/***********************************************************************/
void
insn_GenerateDataOperation(enum pcode_e opcode, sint32 data)
{
insn32_Generate(opcode, (uint32)data);
}
/***********************************************************************/
/* Data size for the next multiple register operation (in bytes) is
* retained in the DC register.
*/
void insn_GenerateDataSize(uint32 dwDataSize)
{
insn32_GenerateDataOperation(oSDC, dwDataSize);
}
/***********************************************************************/
void
insn_GenerateFpOperation(ubyte fpOpcode)
{
insn32_GenerateDataOperation(oFLOAT, fpOpcode);
}
/***********************************************************************/
void
insn_GenerateIoOperation(uint16 ioOpcode, uint16 fileNumber)
{
uint32 arg = (uint32)fileNumber << 16 | (uint32)ioOpcode;
insn32_GenerateDataOperation(oSYSIO, arg);
}
/***********************************************************************/
void
insn_BuiltInFunctionCall(uint16 libOpcode)
{
insn32_GenerateDataOperation(oLIB, (uint32)libOpcode);
}
/***********************************************************************/
void
insn_GenerateLevelReference(enum pcode_e opcode, uint16 level, sint32 offset)
{
/* Note that level is ignored. We used the level set by the
* preceding call to insn_SetStackLevel().
*/
insn32_Generate(opcode, (uint32)offset);
}
/***********************************************************************/
void
insn_GenerateProcedureCall(uint16 level, sint32 offset)
{
insn32_GenerateDataOperation(oPCAL, (uint32)offset);
}
/***********************************************************************/
void
insn_GenerateLineNumber(uint16 includeNumber, uint32 lineNumber)
{
if (includeNumber != g_nCurrentIncludeNumber)
{
g_nCurrentIncludeNumber = includeNumber;
insn32_GenerateDataOperation(oINCLUDE, includeNumber);
}
insn32_GenerateDataOperation(oLINE, lineNumber);
}
/***********************************************************************/
void
insn_SetStackLevel(uint32 level)
{
insn32_GenerateDataOperation(oSLSP, level);
}
|
