summaryrefslogtreecommitdiff
path: root/src/gallium/drivers/nv50/nv50_program.c
blob: db681764910a2e536b46a018ba240775f9cf672f (plain)
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
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
/*
 * Copyright 2010 Chrsitoph Bumiller
 *
 * Permission is hereby granted, free of charge, to any person obtaining a
 * copy of this software and associated documentation files (the "Software"),
 * to deal in the Software without restriction, including without limitation
 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
 * and/or sell copies of the Software, and to permit persons to whom the
 * Software is furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
 * THE AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
 * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF
 * OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE.
 */

/* #define NV50_PROGRAM_DEBUG */

#include "nv50_program.h"
#include "nv50_pc.h"
#include "nv50_context.h"

#include "pipe/p_shader_tokens.h"
#include "tgsi/tgsi_parse.h"
#include "tgsi/tgsi_util.h"
#include "tgsi/tgsi_dump.h"

static INLINE unsigned
bitcount4(const uint32_t val)
{
   static const unsigned cnt[16]
   = { 0, 1, 1, 2, 1, 2, 2, 3, 1, 2, 2, 3, 2, 3, 3, 4 };
   return cnt[val & 0xf];
}

static unsigned
nv50_tgsi_src_mask(const struct tgsi_full_instruction *inst, int c)
{
   unsigned mask = inst->Dst[0].Register.WriteMask;

   switch (inst->Instruction.Opcode) {
   case TGSI_OPCODE_COS:
   case TGSI_OPCODE_SIN:
      return (mask & 0x8) | ((mask & 0x7) ? 0x1 : 0x0);
   case TGSI_OPCODE_DP3:
      return 0x7;
   case TGSI_OPCODE_DP4:
   case TGSI_OPCODE_DPH:
   case TGSI_OPCODE_KIL: /* WriteMask ignored */
      return 0xf;
   case TGSI_OPCODE_DST:
      return mask & (c ? 0xa : 0x6);
   case TGSI_OPCODE_EX2:
   case TGSI_OPCODE_EXP:
   case TGSI_OPCODE_LG2:
   case TGSI_OPCODE_LOG:
   case TGSI_OPCODE_POW:
   case TGSI_OPCODE_RCP:
   case TGSI_OPCODE_RSQ:
   case TGSI_OPCODE_SCS:
      return 0x1;
   case TGSI_OPCODE_IF:
      return 0x1;
   case TGSI_OPCODE_LIT:
      return 0xb;
   case TGSI_OPCODE_TEX:
   case TGSI_OPCODE_TXB:
   case TGSI_OPCODE_TXL:
   case TGSI_OPCODE_TXP:
   {
      const struct tgsi_instruction_texture *tex;

      assert(inst->Instruction.Texture);
      tex = &inst->Texture;

      mask = 0x7;
      if (inst->Instruction.Opcode != TGSI_OPCODE_TEX &&
          inst->Instruction.Opcode != TGSI_OPCODE_TXD)
         mask |= 0x8; /* bias, lod or proj */

      switch (tex->Texture) {
      case TGSI_TEXTURE_1D:
         mask &= 0x9;
         break;
      case TGSI_TEXTURE_SHADOW1D:
         mask &= 0x5;
         break;
      case TGSI_TEXTURE_2D:
         mask &= 0xb;
         break;
      default:
         break;
      }
   }
  	   return mask;
   case TGSI_OPCODE_XPD:
   {
      unsigned x = 0;
      if (mask & 1) x |= 0x6;
      if (mask & 2) x |= 0x5;
      if (mask & 4) x |= 0x3;
      return x;
   }
   default:
      break;
   }

   return mask;
}

static void
nv50_indirect_inputs(struct nv50_translation_info *ti, int id)
{
   int i, c;

   for (i = 0; i < PIPE_MAX_SHADER_INPUTS; ++i)
      for (c = 0; c < 4; ++c)
         ti->input_access[i][c] = id;

   ti->indirect_inputs = TRUE;
}

static void
nv50_indirect_outputs(struct nv50_translation_info *ti, int id)
{
   int i, c;

   for (i = 0; i < PIPE_MAX_SHADER_OUTPUTS; ++i)
      for (c = 0; c < 4; ++c)
         ti->output_access[i][c] = id;

   ti->indirect_outputs = TRUE;
}

static void
prog_inst(struct nv50_translation_info *ti,
          const struct tgsi_full_instruction *inst, int id)
{
   const struct tgsi_dst_register *dst;
   const struct tgsi_src_register *src;
   int s, c, k;
   unsigned mask;

   if (inst->Instruction.Opcode == TGSI_OPCODE_BGNSUB) {
      ti->subr[ti->subr_nr].pos = id - 1;
      ti->subr[ti->subr_nr].id = ti->subr_nr + 1; /* id 0 is main program */
      ++ti->subr_nr;
   }

   if (inst->Dst[0].Register.File == TGSI_FILE_OUTPUT) {
      dst = &inst->Dst[0].Register;

      for (c = 0; c < 4; ++c) {
         if (dst->Indirect)
            nv50_indirect_outputs(ti, id);
         if (!(dst->WriteMask & (1 << c)))
            continue;
         ti->output_access[dst->Index][c] = id;
      }

      if (inst->Instruction.Opcode == TGSI_OPCODE_MOV &&
          inst->Src[0].Register.File == TGSI_FILE_INPUT &&
          dst->Index == ti->edgeflag_out)
         ti->p->vp.edgeflag = inst->Src[0].Register.Index;
   } else
   if (inst->Dst[0].Register.File == TGSI_FILE_TEMPORARY) {
      if (inst->Dst[0].Register.Indirect)
         ti->store_to_memory = TRUE;
   }

   for (s = 0; s < inst->Instruction.NumSrcRegs; ++s) {
      src = &inst->Src[s].Register;
      if (src->File == TGSI_FILE_TEMPORARY)
         if (inst->Src[s].Register.Indirect)
            ti->store_to_memory = TRUE;
      if (src->File != TGSI_FILE_INPUT)
         continue;
      mask = nv50_tgsi_src_mask(inst, s);

      if (inst->Src[s].Register.Indirect)
         nv50_indirect_inputs(ti, id);

      for (c = 0; c < 4; ++c) {
         if (!(mask & (1 << c)))
            continue;
         k = tgsi_util_get_full_src_register_swizzle(&inst->Src[s], c);
         if (k <= TGSI_SWIZZLE_W)
            ti->input_access[src->Index][k] = id;
      }
   }
}

/* Probably should introduce something like struct tgsi_function_declaration
 * instead of trying to guess inputs/outputs.
 */
static void
prog_subroutine_inst(struct nv50_subroutine *subr,
                     const struct tgsi_full_instruction *inst)
{
   const struct tgsi_dst_register *dst;
   const struct tgsi_src_register *src;
   int s, c, k;
   unsigned mask;

   for (s = 0; s < inst->Instruction.NumSrcRegs; ++s) {
      src = &inst->Src[s].Register;
      if (src->File != TGSI_FILE_TEMPORARY)
         continue;
      mask = nv50_tgsi_src_mask(inst, s);

      assert(!inst->Src[s].Register.Indirect);

      for (c = 0; c < 4; ++c) {
         k = tgsi_util_get_full_src_register_swizzle(&inst->Src[s], c);

         if ((mask & (1 << c)) && k < TGSI_SWIZZLE_W)
            if (!(subr->retv[src->Index / 32][k] & (1 << (src->Index % 32))))
               subr->argv[src->Index / 32][k] |= 1 << (src->Index % 32);
      }
   }

   if (inst->Dst[0].Register.File == TGSI_FILE_TEMPORARY) {
      dst = &inst->Dst[0].Register;

      for (c = 0; c < 4; ++c)
         if (dst->WriteMask & (1 << c))
            subr->retv[dst->Index / 32][c] |= 1 << (dst->Index % 32);
   }
}

static void
prog_immediate(struct nv50_translation_info *ti,
               const struct tgsi_full_immediate *imm)
{
   int c;
   unsigned n = ti->immd32_nr++;

   assert(ti->immd32_nr <= ti->scan.immediate_count);

   for (c = 0; c < 4; ++c)
      ti->immd32[n * 4 + c] = imm->u[c].Uint;

   ti->immd32_ty[n] = imm->Immediate.DataType;
}

static INLINE unsigned
translate_interpolate(const struct tgsi_full_declaration *decl)
{
   unsigned mode;

   if (decl->Declaration.Interpolate == TGSI_INTERPOLATE_CONSTANT)
      mode = NV50_INTERP_FLAT;
   else
   if (decl->Declaration.Interpolate == TGSI_INTERPOLATE_PERSPECTIVE)
      mode = 0;
   else
      mode = NV50_INTERP_LINEAR;

   if (decl->Declaration.Centroid)
      mode |= NV50_INTERP_CENTROID;

   return mode;
}

static void
prog_decl(struct nv50_translation_info *ti,
          const struct tgsi_full_declaration *decl)
{
   unsigned i, first, last, sn = 0, si = 0;

   first = decl->Range.First;
   last = decl->Range.Last;

   if (decl->Declaration.Semantic) {
      sn = decl->Semantic.Name;
      si = decl->Semantic.Index;
   }

   switch (decl->Declaration.File) {
   case TGSI_FILE_INPUT:
      for (i = first; i <= last; ++i)
         ti->interp_mode[i] = translate_interpolate(decl);

      if (!decl->Declaration.Semantic)
         break;

      for (i = first; i <= last; ++i) {
         ti->p->in[i].sn = sn;
         ti->p->in[i].si = si;
      }

      switch (sn) {
      case TGSI_SEMANTIC_FACE:
         break;
      case TGSI_SEMANTIC_COLOR:
         if (ti->p->type == PIPE_SHADER_FRAGMENT)
            ti->p->vp.bfc[si] = first;
         break;
      }
      break;
   case TGSI_FILE_OUTPUT:
      if (!decl->Declaration.Semantic)
         break;

      for (i = first; i <= last; ++i) {
         ti->p->out[i].sn = sn;
         ti->p->out[i].si = si;
      }

      switch (sn) {
      case TGSI_SEMANTIC_BCOLOR:
         ti->p->vp.bfc[si] = first;
         break;
      case TGSI_SEMANTIC_PSIZE:
         ti->p->vp.psiz = first;
         break;
      case TGSI_SEMANTIC_EDGEFLAG:
         ti->edgeflag_out = first;
         break;
      default:
         break;
      }
      break;
   case TGSI_FILE_SYSTEM_VALUE:
      switch (decl->Semantic.Name) {
      case TGSI_SEMANTIC_FACE:
         break;
      case TGSI_SEMANTIC_INSTANCEID:
         break;
      case TGSI_SEMANTIC_PRIMID:
         break;
         /*
      case TGSI_SEMANTIC_PRIMIDIN:
         break;
      case TGSI_SEMANTIC_VERTEXID:
         break;
         */
      default:
         break;
      }
      break;
   case TGSI_FILE_CONSTANT:
      ti->p->parm_size = MAX2(ti->p->parm_size, (last + 1) * 16);
      break;
   case TGSI_FILE_ADDRESS:
   case TGSI_FILE_SAMPLER:
   case TGSI_FILE_TEMPORARY:
      break;
   default:
      assert(0);
      break;
   }
}

static int
nv50_vertprog_prepare(struct nv50_translation_info *ti)
{
   struct nv50_program *p = ti->p;
   int i, c;
   unsigned num_inputs = 0;

   ti->input_file = NV_FILE_MEM_S;
   ti->output_file = NV_FILE_OUT;

   for (i = 0; i <= ti->scan.file_max[TGSI_FILE_INPUT]; ++i) {
      p->in[i].id = i;
      p->in[i].hw = num_inputs;

      for (c = 0; c < 4; ++c) {
         if (!ti->input_access[i][c])
            continue;
         ti->input_map[i][c] = num_inputs++;
         p->vp.attrs[(4 * i + c) / 32] |= 1 << ((i * 4 + c) % 32);
      }
   }

   for (i = 0; i <= ti->scan.file_max[TGSI_FILE_OUTPUT]; ++i) {
      p->out[i].id = i;
      p->out[i].hw = p->max_out;

      for (c = 0; c < 4; ++c) {
         if (!ti->output_access[i][c])
            continue;
         ti->output_map[i][c] = p->max_out++;
         p->out[i].mask |= 1 << c;
      }
   }

   if (p->vp.psiz < 0x40)
      p->vp.psiz = p->out[p->vp.psiz].hw;

   return 0;
}

static int
nv50_fragprog_prepare(struct nv50_translation_info *ti)
{
   struct nv50_program *p = ti->p;
   int i, j, c;
   unsigned nvary, nintp, depr;
   unsigned n = 0, m = 0, skip = 0;
   ubyte sn[16], si[16];

   /* FP flags */

   if (ti->scan.writes_z) {
      p->fp.flags[1] = 0x11;
      p->fp.flags[0] |= NV50TCL_FP_CONTROL_EXPORTS_Z;
   }

   if (ti->scan.uses_kill)
      p->fp.flags[0] |= NV50TCL_FP_CONTROL_USES_KIL;

   /* FP inputs */

   ti->input_file = NV_FILE_MEM_V;
   ti->output_file = NV_FILE_GPR;

   /* count non-flat inputs, save semantic info */
   for (i = 0; i < p->in_nr; ++i) {
      m += (ti->interp_mode[i] & NV50_INTERP_FLAT) ? 0 : 1;
      sn[i] = p->in[i].sn;
      si[i] = p->in[i].si;
   }

   /* reorder p->in[] so that non-flat inputs are first and
    * kick out special inputs that don't use VP/GP_RESULT_MAP
    */
   nintp = 0;
   for (i = 0; i < p->in_nr; ++i) {
      if (sn[i] == TGSI_SEMANTIC_POSITION) {
         for (c = 0; c < 4; ++c) {
            ti->input_map[i][c] = nintp;
            if (ti->input_access[i][c]) {
               p->fp.interp |= 1 << (24 + c);
               ++nintp;
            }
         }
         skip++;
         continue;
      } else
      if (sn[i] == TGSI_SEMANTIC_FACE) {
         ti->input_map[i][0] = 255;
         skip++;
         continue;
      }

      j = (ti->interp_mode[i] & NV50_INTERP_FLAT) ? m++ : n++;

      if (sn[i] == TGSI_SEMANTIC_COLOR)
         p->vp.bfc[si[i]] = j;
	   
      p->in[j].linear = (ti->interp_mode[i] & NV50_INTERP_LINEAR) ? 1 : 0;
      p->in[j].id = i;
      p->in[j].sn = sn[i];
      p->in[j].si = si[i];
   }
   assert(n <= m);
   p->in_nr -= skip;

   if (!(p->fp.interp & (8 << 24))) {
      p->fp.interp |= (8 << 24);
      ++nintp;
   }

   p->fp.colors = (1 << 24) | 4; /* CLAMP, FFC0_ID = 4 */

   for (i = 0; i < p->in_nr; ++i) {
      int j = p->in[i].id;
      p->in[i].hw = nintp;

      for (c = 0; c < 4; ++c) {
         if (!ti->input_access[j][c])
            continue;
         p->in[i].mask |= 1 << c;
         ti->input_map[j][c] = nintp++;
      }
      /* count color inputs */
      if (i == p->vp.bfc[0] || i == p->vp.bfc[1])
         p->fp.colors += bitcount4(p->in[i].mask) << 16;
   }
   nintp -= bitcount4(p->fp.interp >> 24); /* subtract position inputs */
   nvary = nintp;
   if (n < m)
      nvary -= p->in[n].hw;

   p->fp.interp |= nvary << NV50TCL_FP_INTERPOLANT_CTRL_COUNT_NONFLAT_SHIFT;
   p->fp.interp |= nintp << NV50TCL_FP_INTERPOLANT_CTRL_COUNT_SHIFT;

   /* FP outputs */

   if (p->out_nr > (1 + (ti->scan.writes_z ? 1 : 0)))
      p->fp.flags[0] |= NV50TCL_FP_CONTROL_MULTIPLE_RESULTS;

   depr = p->out_nr;
   for (i = 0; i < p->out_nr; ++i) {
      p->out[i].id = i;
      if (p->out[i].sn == TGSI_SEMANTIC_POSITION) {
         depr = i;
         continue;
      }
      p->out[i].hw = p->max_out;
      p->out[i].mask = 0xf;

      for (c = 0; c < 4; ++c)
         ti->output_map[i][c] = p->max_out++;
   }
   if (depr < p->out_nr) {
      p->out[depr].mask = 0x4;
      p->out[depr].hw = ti->output_map[depr][2] = p->max_out++;
   } else {
      /* allowed values are 1, 4, 5, 8, 9, ... */
      p->max_out = MAX2(4, p->max_out);
   }

   return 0;
}

static int
nv50_geomprog_prepare(struct nv50_translation_info *ti)
{
   ti->input_file = NV_FILE_MEM_S;
   ti->output_file = NV_FILE_OUT;

   assert(0);
   return 1;
}

static int
nv50_prog_scan(struct nv50_translation_info *ti)
{
   struct nv50_program *p = ti->p;
   struct tgsi_parse_context parse;
   int ret, i;

   p->vp.edgeflag = 0x40;
   p->vp.psiz = 0x40;
   p->vp.bfc[0] = 0x40;
   p->vp.bfc[1] = 0x40;
   p->gp.primid = 0x80;

   tgsi_scan_shader(p->pipe.tokens, &ti->scan);

#ifdef NV50_PROGRAM_DEBUG
   tgsi_dump(p->pipe.tokens, 0);
#endif

   ti->subr =
      CALLOC(ti->scan.opcode_count[TGSI_OPCODE_BGNSUB], sizeof(ti->subr[0]));

   ti->immd32 = (uint32_t *)MALLOC(ti->scan.immediate_count * 16);
   ti->immd32_ty = (ubyte *)MALLOC(ti->scan.immediate_count * sizeof(ubyte));

   ti->insns = MALLOC(ti->scan.num_instructions * sizeof(ti->insns[0]));

   tgsi_parse_init(&parse, p->pipe.tokens);
   while (!tgsi_parse_end_of_tokens(&parse)) {
      tgsi_parse_token(&parse);

      switch (parse.FullToken.Token.Type) {
      case TGSI_TOKEN_TYPE_IMMEDIATE:
         prog_immediate(ti, &parse.FullToken.FullImmediate);
         break;
      case TGSI_TOKEN_TYPE_DECLARATION:
         prog_decl(ti, &parse.FullToken.FullDeclaration);
         break;
      case TGSI_TOKEN_TYPE_INSTRUCTION:
         ti->insns[ti->inst_nr] = parse.FullToken.FullInstruction;
         prog_inst(ti, &parse.FullToken.FullInstruction, ++ti->inst_nr);
         break;
      }
   }

   /* Scan to determine which registers are inputs/outputs of a subroutine. */
   for (i = 0; i < ti->subr_nr; ++i) {
      int pc = ti->subr[i].id;
      while (ti->insns[pc].Instruction.Opcode != TGSI_OPCODE_ENDSUB)
         prog_subroutine_inst(&ti->subr[i], &ti->insns[pc++]);
   }

   p->in_nr = ti->scan.file_max[TGSI_FILE_INPUT] + 1;
   p->out_nr = ti->scan.file_max[TGSI_FILE_OUTPUT] + 1;

   switch (p->type) {
   case PIPE_SHADER_VERTEX:
      ret = nv50_vertprog_prepare(ti);
      break;
   case PIPE_SHADER_FRAGMENT:
      ret = nv50_fragprog_prepare(ti);
      break;
   case PIPE_SHADER_GEOMETRY:
      ret = nv50_geomprog_prepare(ti);
      break;
   default:
      assert(!"unsupported program type");
      ret = -1;
      break;
   }

   assert(!ret);
   return ret;
}

boolean
nv50_program_tx(struct nv50_program *p)
{
   struct nv50_translation_info *ti;
   int ret;

   ti = CALLOC_STRUCT(nv50_translation_info);
   ti->p = p;

   ti->edgeflag_out = PIPE_MAX_SHADER_OUTPUTS;

   ret = nv50_prog_scan(ti);
   if (ret) {
      NOUVEAU_ERR("unsupported shader program\n");
      goto out;
   }

   ret = nv50_generate_code(ti);
   if (ret) {
      NOUVEAU_ERR("error during shader translation\n");
      goto out;
   }

out:
   if (ti->immd32)
      FREE(ti->immd32);
   if (ti->immd32_ty)
      FREE(ti->immd32_ty);
   if (ti->insns)
      FREE(ti->insns);
   if (ti->subr)
      FREE(ti->subr);
   FREE(ti);
   return ret ? FALSE : TRUE;
}

void
nv50_program_destroy(struct nv50_context *nv50, struct nv50_program *p)
{
   nouveau_bo_ref(NULL, &p->bo);

   so_ref(NULL, &p->so);

   if (p->code)
      FREE(p->code);

   if (p->fixups)
      FREE(p->fixups);

   p->translated = FALSE;
}