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[/] [or1k/] [tags/] [rel-0-3-0-rc2/] [or1ksim/] [cuc/] [verilog.c] - Blame information for rev 931

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1 879 markom 
/* verilog.c -- OpenRISC Custom Unit Compiler, verilog generator
2 
 *    Copyright (C) 2002 Marko Mlinar, markom@opencores.org
3 
 *
4 
 *    This file is part of OpenRISC 1000 Architectural Simulator.
5 
 *
6 
 *    This program is free software; you can redistribute it and/or modify
7 
 *    it under the terms of the GNU General Public License as published by
8 
 *    the Free Software Foundation; either version 2 of the License, or
9 
 *    (at your option) any later version.
10 
 *
11 
 *    This program is distributed in the hope that it will be useful,
12 
 *    but WITHOUT ANY WARRANTY; without even the implied warranty of
13 
 *    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
14 
 *    GNU General Public License for more details.
15 
 *
16 
 *    You should have received a copy of the GNU General Public License
17 
 *    along with this program; if not, write to the Free Software
18 
 *    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
19 
 
20 
#include <stdio.h>
21 
#include <stdlib.h>
22 
#include <stdarg.h>
23 
#include <assert.h>
24 
#include "cuc.h"
25 
#include "insn.h"
26 915 markom 
#include "profiler.h"
27 879 markom 
 
28 915 markom 
/* Shortcut */
29 
#define GEN(x...) fprintf (fo, x)
30 
 
31 907 markom 
/* returns log2(x) */
32 
int log2 (unsigned long x)
33 879 markom 
{
34 
  int c = 0;
35 907 markom 
  assert (x >= 0);
36 
  if (!x) return 0; /* not by the book, but practical */
37 
  while (x != 1) x >>= 1, c++;
38 
  return c;
39 
}
40 
 
41 
/* Find index of load/store/call */
42 
int find_lsc_index (cuc_func *f, int ref)
43 
{
44 
  int c = 0;
45 879 markom 
  int i;
46 907 markom 
  int load;
47 
 
48 
  if (f->INSN(ref).index == II_CALL) {
49 
    for (i = 0; i < f->nmsched; i++) {
50 
      if (f->msched[i] == ref) break;
51 
      if (f->mtype[i] & MT_CALL) c++;
52 
    }
53 
  } else {
54 
    load = II_IS_LOAD (f->INSN(ref).index);
55 
    for (i = 0; i < f->nmsched; i++) {
56 
      if (f->msched[i] == ref) break;
57 
      if (load && (f->mtype[i] & MT_LOAD)
58 
       || !load && (f->mtype[i] & MT_STORE)) c++;
59 
    }
60 879 markom 
  }
61 
  return c;
62 
}
63 
 
64 
/* Print out dependencies as verilog expression */
65 
void print_deps (FILE *fo, cuc_func *f, int b, dep_list *t, int registered)
66 
{
67 
  if (t) {
68 
    int first = 0;
69 
    while (t) {
70 907 markom 
      if (f->INSN(t->ref).type & IT_MEMORY) {
71 915 markom 
        GEN ("%s%c_end[%i]", first ? " && " : "",
72 907 markom 
                  II_IS_LOAD (f->INSN(t->ref).index) ? 'l' : 's', find_lsc_index (f, t->ref));
73 
      } else if (f->INSN(t->ref).index == II_CALL) {
74 
        int x;
75 915 markom 
        GEN ("%sf_end[%i]", first ? " && " : "", find_lsc_index (f, t->ref));
76 907 markom 
      } else {
77 
        printf ("print_deps: err %x\n", t->ref);
78 
        assert (0);
79 
      }
80 879 markom 
      first = 1;
81 
      t = t->next;
82 
    }
83 
  } else {
84 915 markom 
    if (registered) GEN ("bb_start_r[%i]", b);
85 
    else GEN ("bb_start[%i]", b);
86 879 markom 
  }
87 
}
88 
 
89 
char *print_op_v (cuc_func *f, char *s, int ref, int j)
90 
{
91 
  unsigned long op = f->INSN(ref).op[j];
92 
  unsigned long opt = f->INSN(ref).opt[j];
93 
  switch (opt & ~OPT_DEST) {
94 
    case OPT_NONE: assert (0); break;
95 924 markom 
    case OPT_CONST: if (f->INSN(ref).type & IT_COND && f->INSN(ref).insn == II_CMOV) {
96 906 markom 
                      assert (op == 0 || op == 1);
97 
                      sprintf (s, "1'b%x", op);
98 
                    } else sprintf (s, "32'h%x", op);
99 
                    break;
100 879 markom 
    case OPT_REGISTER:
101 
                    if (opt & OPT_DEST) sprintf (s, "t%x_%x", REF_BB(ref), REF_I(ref));
102 
                    else sprintf (s, "r%i_%c", op, opt & OPT_DEST ? 'o' : 'i');
103 
                    break;
104 907 markom 
#if 0
105 
    case OPT_FREG:  assert (opt & OPT_DEST);
106 
                    sprintf (s, "fr%i_o", op);
107 
                    break;
108 
#endif
109 879 markom 
    case OPT_REF:   sprintf (s, "t%x_%x", REF_BB(op), REF_I(op)); break;
110 
  }
111 
  return s;
112 
}
113 
 
114 
/* Prints out specified instruction */
115 
void print_insn_v (FILE *fo, cuc_func *f, int b, int i)
116 
{
117 
  cuc_insn *ii = &f->bb[b].insn[i];
118 
  char *s = known[ii->index].rtl;
119 
  char tmp[200] = "";
120 883 markom 
 
121 931 markom 
  assert (s);
122 879 markom 
  while (*s) {
123 
    if (*s <= MAX_OPERANDS) {
124 
      char t[30];
125 
      sprintf (tmp, "%s%s", tmp, print_op_v (f, t, REF(b, i), *s - 1));
126 
    } else if (*s == '\b') sprintf (tmp, "%s%i", b);
127 
    else sprintf (tmp, "%s%c", tmp, *s);
128 
    s++;
129 
  }
130 915 markom 
  GEN ("%-40s /* %s */\n", tmp, ii->disasm);
131 879 markom 
  if (ii->type & IT_MEMORY) {
132 907 markom 
    int j, nls = find_lsc_index (f, REF (b, i));
133 879 markom 
    if (II_IS_LOAD (ii->index)) {
134 
      int nm;
135 
      for (nm = 0; nm < f->nmsched; nm++) if (f->msched[nm] == REF (b, i)) break;
136 
      assert (nm < f->nmsched);
137 
 
138 926 markom 
      GEN ("  if (l_end[%i]) t%x_%x <= #Tp ", nls, b, i);
139 879 markom 
      switch (f->mtype[nm] & (MT_WIDTH | MT_SIGNED)) {
140 915 markom 
        case 1: GEN ("lwb_dat_i & 32'hff;\n");
141 879 markom 
                break;
142 915 markom 
        case 2: GEN ("lwb_dat_i & 32'hffff;\n");
143 879 markom 
                break;
144 
        case 4 | MT_SIGNED:
145 915 markom 
        case 4: GEN ("lwb_dat_i;\n");
146 879 markom 
                break;
147 
        case 1 | MT_SIGNED:
148 915 markom 
                GEN ("{24{lwb_dat_i[7]}, lwb_dat_i[7:0]};\n");
149 879 markom 
                break;
150 
        case 2 | MT_SIGNED:
151 915 markom 
                GEN ("{16{lwb_dat_i[15]}, lwb_dat_i[15:0]};\n");
152 879 markom 
                break;
153 
        default: assert (0);
154 
      }
155 
    }
156 
  } else if (ii->index == II_LRBB) {
157 915 markom 
    GEN ("  if (rst) t%x_%x <= #Tp 1'b0;\n", b, i);
158 925 markom 
    assert (f->bb[b].prev[0] >= 0 && f->bb[b].prev[0] != BBID_END);
159 915 markom 
    GEN ("  else if (bb_start[%i]) t%x_%x <= #Tp bb_stb[%i];\n", b, b, i, f->bb[b].prev[0]);
160 879 markom 
  } else if (ii->index == II_REG) {
161 
    assert (ii->opt[1] == OPT_REF);
162 926 markom 
    GEN ("  if (");
163 879 markom 
    if (f->bb[b].mdep) print_deps (fo, f, b, f->bb[b].mdep, 0);
164 915 markom 
    else GEN ("bb_stb[%i]", b);
165 
    GEN (") t%x_%x <= #Tp t%x_%x;\n",  b, i,
166 879 markom 
                    REF_BB (ii->op[1]), REF_I (ii->op[1]));
167 
  }
168 
}
169 
 
170 
/* Outputs binary number */
171 907 markom 
static char *bin_str (unsigned long x, int len)
172 879 markom 
{
173 
  static char bx[33];
174 
  char *s = bx;
175 
  while (len > 0) *s++ = '0' + ((x >> --len) & 1);
176 
  *s = '\0';
177 
  return bx;
178 
}
179 
 
180 
/* Returns index of branch instruction inside a block b */
181 907 markom 
static int branch_index (cuc_bb *bb)
182 879 markom 
{
183 
  int i;
184 
  for (i = bb->ninsn - 1; i >= 0; i--)
185 
    if (bb->insn[i].type & IT_BRANCH) return i;
186 
  return -1;
187 
}
188 
 
189 907 markom 
static void print_turn_off_dep (FILE *fo, cuc_func *f, dep_list *dep)
190 
{
191 
  while (dep) {
192 
    assert (f->INSN(dep->ref).type & IT_MEMORY || f->INSN(dep->ref).index == II_CALL);
193 915 markom 
    GEN ("      %c_stb[%i] <= #Tp 1'b0;\n", f->INSN(dep->ref).index == II_CALL ? 'f'
194 907 markom 
            : II_IS_LOAD (f->INSN(dep->ref).index) ? 'l' : 's', find_lsc_index (f, dep->ref));
195 
    dep = dep->next;
196 
  }
197 
}
198 
 
199 
static int func_index (cuc_func *f, int ref)
200 
{
201 
  int i;
202 
  unsigned long addr;
203 
  assert (f->INSN(ref).index == II_CALL && f->INSN(ref).opt[0] & OPT_CONST);
204 
  addr = f->INSN(ref).op[0];
205 
  for (i = 0; i < f->nfdeps; i++)
206 
    if (f->fdeps[i]->start_addr == addr) return i;
207 
 
208 
  assert (0);
209 
  return -1;
210 
}
211 
 
212 879 markom 
/* Generates verilog file out of insn dataflow */
213 
void output_verilog (cuc_func *f, char *filename)
214 
{
215 
  FILE *fo;
216 
  int b, i, j;
217 
  int ci = 0, co = 0;
218 907 markom 
  int nloads = 0, nstores = 0, ncalls = 0;
219 879 markom 
  char tmp[256];
220 
  cuc_bb *end_bb = NULL;
221 
  int end_bb_no = -1;
222 
  sprintf (tmp, "%s.v", filename);
223 
 
224 902 markom 
  log ("Generating verilog file \"%s\"\n", tmp);
225 
  printf ("Generating verilog file \"%s\"\n", tmp);
226 879 markom 
  if ((fo = fopen (tmp, "wt+")) == NULL) {
227 
    fprintf (stderr, "Cannot open '%s'\n", tmp);
228 
    exit (1);
229 
  }
230 
 
231 883 markom 
  for (b = 0; b < f->num_bb; b++)
232 879 markom 
    if (f->bb[b].type & BB_END) end_bb = &f->bb[end_bb_no = b];
233 
  assert (end_bb && end_bb->type & BB_END);
234 
 
235 
  /* output header */
236 915 markom 
  GEN ("/* %s -- generated by OpenRISC Custom Unit Compiler\n", tmp);
237 
  GEN ("   (C) 2002 OpenCores http://www.opencores.org/\n");
238 
  GEN ("   function   \"%s\"\n", filename);
239 
  GEN ("   at         %08x - %08x\n", f->start_addr, f->end_addr);
240 
  GEN ("   num BBs    %i */\n\n", f->num_bb);
241 
  GEN ("module %s (clk, rst,\n", filename);
242 
  GEN ("              lwb_adr_o, lwb_dat_i, lwb_cycstb_o,\n");
243 
  GEN ("              lwb_sel_o, lwb_linbrst_o, lwb_ack_i,\n");
244 
  GEN ("              swb_adr_o, swb_dat_o, swb_cycstb_o,\n");
245 
  GEN ("              swb_sel_o, swb_linbrst_o, swb_ack_i,\n");
246 879 markom 
 
247 915 markom 
  GEN ("/* inputs */  ");
248 879 markom 
  for (i = 0; i < MAX_REGS; i++)
249 883 markom 
    if (f->used_regs[i]) {
250 915 markom 
      GEN ("r%i_i, ", i);
251 879 markom 
      ci++;
252 
    }
253 915 markom 
  if (!ci) GEN ("/* NONE */");
254 879 markom 
 
255 915 markom 
  GEN ("\n/* outputs */ ");
256 879 markom 
  for (i = 0; i < MAX_REGS; i++)
257 883 markom 
    if (f->lur[i] >= 0 && !f->saved_regs[i]) {
258 915 markom 
      GEN ("r%i_o, ", i);
259 879 markom 
      co++;
260 
    }
261 
 
262 915 markom 
  if (!co) GEN ("/* NONE */");
263 907 markom 
  if (f->nfdeps) {
264 915 markom 
    GEN ("\n/* f. calls */, fstart_o, %sfend_i, fr11_i, ",
265 907 markom 
                    log2 (f->nfdeps) > 0 ? "fid_o, " : "");
266 915 markom 
    for (i = 0; i < 6; i++) GEN ("fr%i_o, ", i + 3);
267 907 markom 
  }
268 915 markom 
  GEN ("\n              start_i, end_o, busy_o);\n\n");
269 879 markom 
 
270 915 markom 
  GEN ("parameter Tp = 1;\n\n");
271 
 
272 
  GEN ("input         clk, rst;\n");
273 
  GEN ("input         start_i;\t/* Module starts when set to 1 */ \n");
274 
  GEN ("output        end_o;\t/* Set when module finishes, cleared upon start_i == 1 */\n");
275 
  GEN ("output        busy_o;\t/* Set when module should not be interrupted */\n");
276 
  GEN ("\n/* Bus signals */\n");
277 
  GEN ("output        lwb_cycstb_o, swb_cycstb_o;\n");
278 
  GEN ("input         lwb_ack_i, swb_ack_i;\n");
279 
  GEN ("output  [3:0] lwb_sel_o, swb_sel_o;\n");
280 
  GEN ("output [31:0] lwb_adr_o, swb_adr_o;\n");
281 
  GEN ("output        lwb_linbrst_o, swb_linbrst_o;\n");
282 
  GEN ("input  [31:0] lwb_dat_i;\n");
283 
  GEN ("output [31:0] swb_dat_o;\n\n");
284 879 markom 
 
285 915 markom 
  GEN ("reg           lwb_cycstb_o, swb_cycstb_o;\n");
286 
  GEN ("reg    [31:0] lwb_adr_o, swb_adr_o;\n");
287 
  GEN ("reg     [3:0] lwb_sel_o, swb_sel_o;\n");
288 
  GEN ("reg    [31:0] swb_dat_o;\n");
289 
  GEN ("reg           lwb_linbrst_o, swb_linbrst_o;\n");
290 879 markom 
 
291 915 markom 
  if (ci || co) GEN ("\n/* module ports */\n");
292 879 markom 
  if (ci) {
293 
    int first = 1;
294 915 markom 
    GEN ("input  [31:0]");
295 879 markom 
    for (i = 0; i < MAX_REGS; i++)
296 883 markom 
      if (f->used_regs[i]) {
297 915 markom 
        GEN ("%sr%i_i", first ? " " : ", ", i);
298 879 markom 
        first = 0;
299 
      }
300 915 markom 
    GEN (";\n");
301 879 markom 
  }
302 
 
303 
  if (co) {
304 
    int first = 1;
305 915 markom 
    GEN ("output [31:0]");
306 879 markom 
    for (i = 0; i < MAX_REGS; i++)
307 883 markom 
      if (f->lur[i] >= 0 && !f->saved_regs[i]) {
308 915 markom 
        GEN ("%sr%i_o", first ? " " : ", ", i);
309 879 markom 
        first = 0;
310 
      }
311 915 markom 
    GEN (";\n");
312 879 markom 
  }
313 
 
314 907 markom 
  if (f->nfdeps) {
315 915 markom 
    GEN ("\n/* Function calls */\n");
316 
    GEN ("output [31:0] fr3_o");
317 
    for (i = 1; i < 6; i++) GEN (", fr%i_o", i + 3);
318 
    GEN (";\n");
319 924 markom 
    GEN ("input  [31:0] fr11_i;\n");
320 915 markom 
    if (log2(f->nfdeps) > 0) GEN ("output [%i:0] fid_o;\n", log2(f->nfdeps));
321 
    GEN ("output        fstart_o;\n");
322 
    GEN ("input         fend_i;\n");
323 907 markom 
  }
324 
 
325 879 markom 
  /* Count loads & stores */
326 
  for (i = 0; i < f->nmsched; i++)
327 907 markom 
    if (f->mtype[i] & MT_STORE) nstores++;
328 
    else if (f->mtype[i] & MT_LOAD) nloads++;
329 
    else if (f->mtype[i] & MT_CALL) ncalls++;
330 879 markom 
 
331 
  /* Output internal registers for loads */
332 
  if (nloads) {
333 
    int first = 1;
334 883 markom 
    int num = 0;
335 915 markom 
    GEN ("\n/* internal registers for loads */\n");
336 879 markom 
    for (i = 0; i < f->nmsched; i++)
337 907 markom 
      if (f->mtype[i] & MT_LOAD) {
338 915 markom 
        GEN ("%st%x_%x", first ? "reg    [31:0] " : ", ",
339 879 markom 
                REF_BB(f->msched[i]), REF_I(f->msched[i]));
340 883 markom 
 
341 
        if (num >= 8) {
342 915 markom 
          GEN (";\n");
343 883 markom 
          first = 1;
344 
          num = 0;
345 
        } else {
346 
          first = 0;
347 
          num++;
348 
        }
349 879 markom 
      }
350 915 markom 
    if (!first) GEN (";\n");
351 879 markom 
  }
352 
 
353 907 markom 
  /* Internal register for function return value */
354 
  if (f->nfdeps) {
355 915 markom 
    GEN ("\n/* Internal register for function return value */\n");
356 
    GEN ("reg     [31:0] fr11_r;\n");
357 907 markom 
  }
358 
 
359 915 markom 
  GEN ("\n/* 'zero or one' hot state machines */\n");
360 
  if (nloads) GEN ("reg     [%i:0] l_stb; /* loads */\n", nloads - 1);
361 
  if (nstores) GEN ("reg     [%i:0] s_stb; /* stores */\n", nstores - 1);
362 
  GEN ("reg     [%i:0] bb_stb; /* basic blocks */\n", f->num_bb - 1);
363 879 markom 
 
364 
  {
365 883 markom 
    int first = 2;
366 879 markom 
    int num = 0;
367 
    for (b = 0; b < f->num_bb; b++)
368 
      for (i = 0; i < f->bb[b].ninsn; i++)
369 
        if (f->bb[b].insn[i].type & IT_COND
370 
         && f->bb[b].insn[i].index != II_REG
371 
         && f->bb[b].insn[i].index != II_LRBB) {
372 915 markom 
          if (first == 2) GEN ("\n/* basic block condition wires */\n");
373 
          GEN ("%st%x_%x", first ? "wire          " : ", ", b, i);
374 883 markom 
          if (num >= 8) {
375 915 markom 
            GEN (";\n");
376 879 markom 
            first = 1;
377 
            num = 0;
378 
          } else {
379 
            first = 0;
380 
            num++;
381 
          }
382 
        }
383 915 markom 
    if (!first) GEN (";\n");
384 879 markom 
 
385 915 markom 
    GEN ("\n/* forward declaration of normal wires */\n");
386 879 markom 
    num = 0;
387 
    first = 1;
388 
    for (b = 0; b < f->num_bb; b++)
389 
      for (i = 0; i < f->bb[b].ninsn; i++)
390 
        if (!(f->bb[b].insn[i].type & (IT_COND | IT_BRANCH))
391 
         && f->bb[b].insn[i].index != II_REG
392 
         && f->bb[b].insn[i].index != II_LRBB) {
393 
          /* Exclude loads */
394 
          if (f->bb[b].insn[i].type & IT_MEMORY && II_IS_LOAD (f->bb[b].insn[i].index)) continue;
395 915 markom 
          GEN ("%st%x_%x", first ? "wire   [31:0] " : ", ", b, i);
396 883 markom 
          if (num >= 8) {
397 915 markom 
            GEN (";\n");
398 879 markom 
            first = 1;
399 
            num = 0;
400 
          } else {
401 
            first = 0;
402 
            num++;
403 
          }
404 
        }
405 915 markom 
    if (!first) GEN (";\n");
406 879 markom 
 
407 915 markom 
    GEN ("\n/* forward declaration registers */\n");
408 879 markom 
    num = 0;
409 
    first = 1;
410 
    for (b = 0; b < f->num_bb; b++)
411 
      for (i = 0; i < f->bb[b].ninsn; i++)
412 
        if (f->bb[b].insn[i].index == II_REG
413 
         && f->bb[b].insn[i].index != II_LRBB) {
414 915 markom 
          GEN ("%st%x_%x", first ? "reg    [31:0] " : ", ", b, i);
415 883 markom 
          if (num >= 8) {
416 915 markom 
            GEN (";\n");
417 879 markom 
            first = 1;
418 
            num = 0;
419 
          } else {
420 
            first = 0;
421 
            num++;
422 
          }
423 
        }
424 915 markom 
    if (!first) GEN (";\n");
425 879 markom 
 
426 
    num = 0;
427 
    first = 1;
428 
    for (b = 0; b < f->num_bb; b++)
429 
      for (i = 0; i < f->bb[b].ninsn; i++)
430 
        if (f->bb[b].insn[i].index != II_REG
431 
         && f->bb[b].insn[i].index == II_LRBB) {
432 915 markom 
          GEN ("%st%x_%x", first ? "reg           " : ", ", b, i);
433 883 markom 
          if (num >= 8) {
434 915 markom 
            GEN (";\n");
435 879 markom 
            first = 1;
436 
            num = 0;
437 
          } else {
438 
            first = 0;
439 
            num++;
440 
          }
441 
        }
442 915 markom 
    if (!first) GEN (";\n");
443 879 markom 
  }
444 
 
445 915 markom 
  if (nloads || nstores) GEN ("\n/* dependencies */\n");
446 
  if (nloads) GEN ("wire    [%i:0] l_end = l_stb & {%i{lwb_ack_i}};\n",
447 879 markom 
                  nloads - 1, nloads);
448 915 markom 
  if (nstores) GEN ("wire    [%i:0] s_end = s_stb & {%i{swb_ack_i}};\n",
449 879 markom 
                  nstores - 1, nstores);
450 915 markom 
  if (ncalls) GEN ("wire    [%i:0] f_end = f_stb & {%i{fend_i}};\n",
451 907 markom 
                  ncalls - 1, ncalls);
452 879 markom 
 
453 915 markom 
  GEN ("\n/* last dependency */\n");
454 
  GEN ("wire   end_o = bb_stb[%i]", end_bb_no);
455 879 markom 
  if (end_bb->mdep) {
456 915 markom 
    GEN (" && ");
457 879 markom 
    print_deps (fo, f, end_bb_no, end_bb->mdep, 0);
458 
  }
459 907 markom 
 
460 925 markom 
  /* Is there a loop right at the end? */
461 
  if (end_bb->next[0] != BBID_END || end_bb->next[1] != BBID_END && end_bb->next[1] >= 0) {
462 879 markom 
    int bidx = branch_index (end_bb);
463 
    char t[30];
464 
    print_op_v (f, t, REF (end_bb_no, bidx), 1);
465 915 markom 
    GEN (" && !%s", t);
466 879 markom 
  }
467 915 markom 
  GEN (";\n");
468 924 markom 
  GEN ("wire   busy_o = |bb_stb;\n");
469 
 
470 879 markom 
 
471 915 markom 
  GEN ("\n/* Basic block triggers */\n");
472 
  GEN ("wire   [%2i:0] bb_start = {\n", f->num_bb - 1);
473 879 markom 
  for (b = f->num_bb - 1; b >= 0; b--) {
474 915 markom 
    GEN ("    /* bb_start[%2i] */ ", b);
475 925 markom 
    for (i = 0; i < 2; i++) if (f->bb[b].prev[i] >= 0) {
476 
      cuc_bb *prev = &f->bb[f->bb[b].prev[i]];
477 879 markom 
      int t;
478 925 markom 
      if (i) GEN ("\n                    || ");
479 879 markom 
      if (prev->mdep) {
480 925 markom 
        print_deps (fo, f, f->bb[b].prev[i], prev->mdep, 0);
481 915 markom 
        GEN (" && ");
482 879 markom 
      }
483 925 markom 
      GEN ("bb_stb[%i]", f->bb[b].prev[i]);
484 
      if (prev->next[0] >= 0 && prev->next[0] != BBID_END
485 
       && prev->next[1] >= 0 && prev->next[1] != BBID_END) {
486 
        int bi = REF (f->bb[b].prev[i], branch_index (&f->bb[f->bb[b].prev[i]]));
487 924 markom 
        int ci;
488 
        assert (bi >= 0);
489 
        ci = f->INSN(bi).op[1];
490 
        t = prev->next[0] == b;
491 915 markom 
        GEN (" && ");
492 924 markom 
        if (f->INSN(bi).opt[1] & OPT_REF) {
493 
          GEN ("%st%x_%x", t ? "" : "!", REF_BB(ci), REF_I(ci));
494 
        } else {
495 
          fprintf (stderr, "%x!%x!%x\n", bi, ci, f->INSN(bi).opt[1]);
496 
          assert (f->INSN(bi).opt[1] & OPT_CONST);
497 
          GEN ("%s%i", t ? "" : "!", ci);
498 
        }
499 879 markom 
      }
500 925 markom 
    } else break;
501 
    if (!i) GEN ("start_i");
502 915 markom 
    if (b == 0) GEN ("};\n");
503 
    else GEN (",\n");
504 879 markom 
  }
505 
 
506 915 markom 
  GEN ("\n/* Register the bb_start */\n");
507 
  GEN ("reg   [%2i:0] bb_start_r;\n\n", f->num_bb - 1);
508 
  GEN ("always @(posedge rst or posedge clk)\n");
509 
  GEN ("begin\n");
510 
  GEN ("  if (rst) bb_start_r <= #Tp %i'b0;\n", f->num_bb);
511 
  GEN ("  else if (end_o) bb_start_r <= #Tp %i'b0;\n", f->num_bb);
512 
  GEN ("  else bb_start_r <= #Tp bb_start;\n");
513 
  GEN ("end\n");
514 879 markom 
 
515 915 markom 
  GEN ("\n/* Logic */\n");
516 879 markom 
  /* output body */
517 
  for (b = 0; b < f->num_bb; b++) {
518 915 markom 
    GEN ("\t\t/* BB%i */\n", b);
519 879 markom 
    for (i = 0; i < f->bb[b].ninsn; i++)
520 
      print_insn_v (fo, f, b, i);
521 915 markom 
    GEN ("\n");
522 879 markom 
  }
523 
 
524 
  if (co) {
525 915 markom 
    GEN ("\n/* Outputs */\n");
526 879 markom 
    for (i = 0; i < MAX_REGS; i++)
527 883 markom 
      if (f->lur[i] >= 0 && !f->saved_regs[i])
528 915 markom 
        GEN ("assign r%i_o = t%x_%x;\n", i, REF_BB(f->lur[i]),
529 883 markom 
                        REF_I(f->lur[i]));
530 879 markom 
  }
531 
 
532 
  if (nstores) {
533 
    int cur_store = 0;
534 915 markom 
    GEN ("\n/* Memory stores */\n");
535 
    GEN ("always @(posedge clk or posedge rst)\nbegin\n");
536 
    GEN ("  if (rst) swb_dat_o <= #Tp 32'h0;\n");
537 879 markom 
    for (i = 0; i < f->nmsched; i++)
538 907 markom 
      if (f->mtype[i] & MT_STORE) {
539 879 markom 
        char t[30];
540 915 markom 
        GEN ("  else if (s_stb[%i]) swb_dat_o <= #Tp %s;\n", cur_store++,
541 879 markom 
                        print_op_v (f, t, f->msched[i], 0));
542 
        //printf ("msched[%i] = %x (mtype %x) %x\n", i, f->msched[i], f->mtype[i], f->INSN(f->msched[i]).op[0]);
543 
      }
544 915 markom 
    GEN ("end\n");
545 879 markom 
  }
546 
 
547 
  if (nloads) {
548 
    int cur_load = 0;
549 915 markom 
    GEN ("\n/* Load state machine */\n");
550 
    GEN ("always @(posedge clk or posedge rst)\n");
551 
    GEN ("begin\n");
552 
    GEN ("  if (rst) begin\n");
553 
    GEN ("    l_stb <= #Tp %i'h0;\n", nloads);
554 
    GEN ("    lwb_cycstb_o <= #Tp 1'b0;\n");
555 
    GEN ("    lwb_sel_o[3:0] <= #Tp 4'b0000;\n");
556 
    GEN ("    lwb_linbrst_o <= #Tp 1'b0;\n");
557 
    GEN ("    lwb_adr_o <= #Tp 32'h0;\n");
558 
    GEN ("  end else begin\n");
559 883 markom 
    cucdebug (1, "loads \n");
560 907 markom 
    for (i = 0; i < f->nmsched; i++) if (f->mtype[i] & MT_LOAD) {
561 879 markom 
      char t[30];
562 
      dep_list *dep = f->INSN(f->msched[i]).dep;
563 883 markom 
      cucdebug (1, "msched[%i] = %x (mtype %x)\n", i, f->msched[i], f->mtype[i]);
564 879 markom 
      assert (f->INSN(f->msched[i]).opt[1] & (OPT_REF | OPT_REGISTER));
565 915 markom 
      GEN ("    if (");
566 879 markom 
      print_deps (fo, f, REF_BB(f->msched[i]), f->INSN(f->msched[i]).dep, 1);
567 915 markom 
      GEN (") begin\n");
568 907 markom 
      print_turn_off_dep (fo, f, dep);
569 915 markom 
      GEN ("      l_stb[%i] <= #Tp 1'b1;\n", cur_load++);
570 
      GEN ("      lwb_cycstb_o <= #Tp 1'b1;\n");
571 
      GEN ("      lwb_sel_o[3:0] <= #Tp 4'b");
572 879 markom 
      switch (f->mtype[i] & MT_WIDTH) {
573 915 markom 
        case 1: GEN ("0001 << (%s & 32'h3);\n",
574 879 markom 
                                print_op_v (f, t, f->msched[i], 1)); break;
575 915 markom 
        case 2: GEN ("0011 << ((%s & 32'h1) << 1);\n",
576 879 markom 
                                print_op_v (f, t, f->msched[i], 1)); break;
577 915 markom 
        case 4: GEN ("1111;\n"); break;
578 879 markom 
        default: assert (0);
579 
      }
580 915 markom 
      GEN ("      lwb_linbrst_o <= #Tp 1'b%i;\n",
581 879 markom 
                      (f->mtype[i] & MT_BURST) && !(f->mtype[i] & MT_BURSTE) ? 1 : 0);
582 915 markom 
      GEN ("      lwb_adr_o <= #Tp t%x_%x & ~32'h3;\n",
583 879 markom 
                      REF_BB(f->INSN(f->msched[i]).op[1]), REF_I(f->INSN(f->msched[i]).op[1]));
584 915 markom 
      GEN ("    end\n");
585 879 markom 
    }
586 915 markom 
    GEN ("    if (l_end[%i]) begin\n", nloads - 1);
587 
    GEN ("      l_stb <= #Tp %i'h0;\n", nloads);
588 
    GEN ("      lwb_cycstb_o <= #Tp 1'b0;\n");
589 
    GEN ("      lwb_sel_o[3:0] <= #Tp 4'b0000;\n");
590 
    GEN ("      lwb_linbrst_o <= #Tp 1'b0;\n");
591 
    GEN ("      lwb_adr_o <= #Tp 32'h0;\n");
592 
    GEN ("    end\n");
593 
    GEN ("  end\n");
594 
    GEN ("end\n");
595 879 markom 
  }
596 
 
597 
  if (nstores) {
598 
    int cur_store = 0;
599 915 markom 
    GEN ("\n/* Store state machine */\n");
600 
    GEN ("always @(posedge clk or posedge rst)\n");
601 
    GEN ("begin\n");
602 
    GEN ("  if (rst) begin\n");
603 
    GEN ("    s_stb <= #Tp %i'h0;\n", nstores);
604 
    GEN ("    swb_cycstb_o <= #Tp 1'b0;\n");
605 
    GEN ("    swb_sel_o[3:0] <= #Tp 4'b0000;\n");
606 
    GEN ("    swb_linbrst_o <= #Tp 1'b0;\n");
607 
    GEN ("    swb_adr_o <= #Tp 32'h0;\n");
608 
    GEN ("  end else begin\n");
609 883 markom 
    cucdebug (1, "stores \n");
610 907 markom 
    for (i = 0; i < f->nmsched; i++) if (f->mtype[i] & MT_STORE) {
611 879 markom 
      char t[30];
612 
      dep_list *dep = f->INSN(f->msched[i]).dep;
613 883 markom 
      cucdebug (1, "msched[%i] = %x (mtype %x)\n", i, f->msched[i], f->mtype[i]);
614 879 markom 
      assert (f->INSN(f->msched[i]).opt[1] & (OPT_REF | OPT_REGISTER));
615 915 markom 
      GEN ("    if (");
616 879 markom 
      print_deps (fo, f, REF_BB(f->msched[i]), f->INSN(f->msched[i]).dep, 1);
617 915 markom 
      GEN (") begin\n");
618 907 markom 
      print_turn_off_dep (fo, f, dep);
619 915 markom 
      GEN ("      s_stb[%i] <= #Tp 1'b1;\n", cur_store++);
620 
      GEN ("      swb_cycstb_o <= #Tp 1'b1;\n");
621 
      GEN ("      swb_sel_o[3:0] <= #Tp 4'b");
622 879 markom 
      switch (f->mtype[i] & MT_WIDTH) {
623 915 markom 
        case 1: GEN ("0001 << (%s & 32'h3);\n",
624 879 markom 
                                print_op_v (f, t, f->msched[i], 1)); break;
625 915 markom 
        case 2: GEN ("0011 << ((%s & 32'h1) << 1);\n",
626 879 markom 
                                print_op_v (f, t, f->msched[i], 1)); break;
627 915 markom 
        case 4: GEN ("1111;\n"); break;
628 879 markom 
        default: assert (0);
629 
      }
630 915 markom 
      GEN ("      swb_linbrst_o <= #Tp 1'b%i;\n",
631 879 markom 
                      (f->mtype[i] & MT_BURST) && !(f->mtype[i] & MT_BURSTE) ? 1 : 0);
632 915 markom 
      GEN ("      swb_adr_o <= #Tp t%x_%x & ~32'h3;\n",
633 879 markom 
                      REF_BB(f->INSN(f->msched[i]).op[1]), REF_I(f->INSN(f->msched[i]).op[1]));
634 915 markom 
      GEN ("    end\n");
635 879 markom 
    }
636 915 markom 
    GEN ("    if (s_end[%i]) begin\n", nstores - 1);
637 
    GEN ("      s_stb <= #Tp %i'h0;\n", nstores);
638 
    GEN ("      swb_cycstb_o <= #Tp 1'b0;\n");
639 
    GEN ("      swb_sel_o[3:0] <= #Tp 4'b0000;\n");
640 
    GEN ("      swb_linbrst_o <= #Tp 1'b0;\n");
641 
    GEN ("      swb_adr_o <= #Tp 32'h0;\n");
642 
    GEN ("    end\n");
643 
    GEN ("  end\n");
644 
    GEN ("end\n");
645 879 markom 
  }
646 
 
647 907 markom 
  if (ncalls) {
648 
    int cur_call = 0;
649 915 markom 
    GEN ("\n/* Function calls state machine */\n");
650 
    GEN ("always @(posedge clk or posedge rst)\n");
651 
    GEN ("begin\n");
652 
    GEN ("  if (rst) begin\n");
653 
    GEN ("    f_stb <= #Tp %i'h0;\n", nstores);
654 
    for (i = 0; i < 6; i++) GEN ("    fr%i_o <= #Tp 32'h0;\n", i + 3);
655 
    if (log2(ncalls)) GEN ("    fid_o <= #Tp %i'h0;\n", log2 (f->nfdeps));
656 
    GEN ("    fstart_o <= #Tp 1'b0;\n");
657 
    //GEN ("    f11_r <= #Tp 32'h0;\n");
658 
    GEN ("  end else begin\n");
659 907 markom 
    cucdebug (1, "calls \n");
660 
    for (i = 0; i < f->nmsched; i++) if (f->mtype[i] & MT_CALL) {
661 
      char t[30];
662 
      dep_list *dep = f->INSN(f->msched[i]).dep;
663 
      cucdebug (1, "msched[%i] = %x (mtype %x)\n", i, f->msched[i], f->mtype[i]);
664 
      assert (f->INSN(f->msched[i]).opt[1] & (OPT_REF | OPT_REGISTER));
665 915 markom 
      GEN ("    if (");
666 907 markom 
      print_deps (fo, f, REF_BB(f->msched[i]), f->INSN(f->msched[i]).dep, 1);
667 915 markom 
      GEN (") begin\n");
668 907 markom 
      print_turn_off_dep (fo, f, dep);
669 915 markom 
      GEN ("      f_stb[%i] <= #Tp 1'b1;\n", cur_call++);
670 
      GEN ("      fstart_o <= #Tp 1'b1;\n");
671 907 markom 
      if (log2 (f->nfdeps))
672 915 markom 
        GEN ("      fid_o <= #Tp %i'h%x;\n", log2 (f->nfdeps), func_index (f, f->msched[i]));
673 907 markom 
 
674 
      for (j = 0; j < 6; j++)
675 915 markom 
        GEN ("      fr%i_o <= #Tp t%x_%x;\n", j + 3,
676 907 markom 
                       REF_BB (f->msched[i]), REF_I (f->msched[i]) - 6 + i);
677 915 markom 
      GEN ("    end\n");
678 907 markom 
    }
679 915 markom 
    GEN ("    if (f_end[%i]) begin\n", ncalls - 1);
680 
    GEN ("      f_stb <= #Tp %i'h0;\n", ncalls);
681 
    GEN ("      f_start_o <= #Tp 1'b0;\n");
682 
    GEN ("    end\n");
683 
    GEN ("  end\n");
684 
    GEN ("end\n");
685 907 markom 
  }
686 
 
687 915 markom 
  GEN ("\n/* Basic blocks state machine */\n");
688 
  GEN ("always @(posedge clk or posedge rst)\n");
689 
  GEN ("begin\n");
690 
  GEN ("  if (rst) bb_stb <= #Tp %i'h%x;\n", f->num_bb, 0);
691 
  GEN ("  else if (end_o) bb_stb <= #Tp %i'h%x;\n", f->num_bb, 0);
692 879 markom 
  for (i = 0; i < f->num_bb; i++) {
693 924 markom 
    GEN ("  end else if (bb_start[%i]) begin\n", i);
694 915 markom 
    GEN ("    bb_stb <= #Tp %i'h%x;\n", f->num_bb, 1 << i);
695 879 markom 
  }
696 915 markom 
  GEN ("  end else if (end_o) begin\n");
697 
  GEN ("    bb_stb <= #Tp %i'h%x;\n", f->num_bb, 0);
698 
  GEN ("  end\n");
699 
  GEN ("end\n");
700 879 markom 
 
701 
  /* output footer */
702 915 markom 
  GEN ("\nendmodule\n");
703 879 markom 
 
704 
  fclose (fo);
705 
}
706 
 
707 915 markom 
void generate_main (int nfuncs, cuc_func **f, char *filename)
708 
{
709 
  FILE *fo;
710 
  int i, j, nrf, first;
711 
  char tmp[256];
712 
  int ncallees[MAX_FUNCS];
713 
  int maxncallees = 0;
714 
  sprintf (tmp, "%s.v", filename);
715 
 
716 
  for (i = 0, nrf = 0; i < nfuncs; i++) {
717 
    if (f[i]) f[i]->tmp = nrf++;
718 
    ncallees[i] = 0;
719 
  }
720 
  if (!nrf) return;
721 
 
722 
  for (i = 0; i < nfuncs; i++) if (f[i])
723 
    for (j = 0; j < f[i]->nfdeps; j++)
724 
      ncallees[f[i]->fdeps[j]->tmp]++;
725 
 
726 
  for (i = 0; i < nrf; i++)
727 
    if (maxncallees < ncallees[i]) maxncallees = ncallees[i];
728 
 
729 
  log ("Generating verilog file \"%s\"\n", tmp);
730 
  printf ("Generating verilog file \"%s\"\n", tmp);
731 
  if ((fo = fopen (tmp, "wt+")) == NULL) {
732 
    fprintf (stderr, "Cannot open '%s'\n", tmp);
733 
    exit (1);
734 
  }
735 
 
736 
  /* output header */
737 
  GEN ("/* %s -- generated by OpenRISC Custom Unit Compiler\n", tmp);
738 
  GEN ("   (C) 2002 OpenCores http://www.opencores.org/ */\n\n");
739 
  GEN ("/* Includes %i functions:", nrf);
740 
  for (i = 0; i < nfuncs; i++) if (f[i])
741 
    GEN ("\n%s", prof_func[i].name);
742 
  GEN (" */\n\n");
743 
 
744 
  GEN ("`include \"timescale.v\"\n\n");
745 
  GEN ("module %s (clk, rst,\n", filename);
746 
  GEN ("              /* Load and store master Wishbone ports */\n");
747 
  GEN ("              lwb_adr_o, lwb_dat_i, lwb_cycstb_o,\n");
748 
  GEN ("              lwb_sel_o, lwb_linbrst_o, lwb_ack_i,\n");
749 
  GEN ("              swb_adr_o, swb_dat_o, swb_cycstb_o,\n");
750 
  GEN ("              swb_sel_o, swb_linbrst_o, swb_ack_i,\n\n");
751 
  GEN ("              /* cuc interface */\n");
752 
  GEN ("              cuc_stb_i, cuc_adr_i, cuc_dat_i, cuc_dat_o, cuc_we_i, cuc_ack_o);\n\n");
753 
 
754 
  GEN ("parameter Tp = 1;\n");
755 
  GEN ("\n/* module ports */\n");
756 
  GEN ("input         clk, rst, cuc_stb_i, cuc_we_i;\n");
757 
  GEN ("input         lwb_ack_i, swb_ack_i, lwb_linbrst_o, swb_linbrst_o;\n");
758 
  GEN ("output        lwb_cycstb_o, lwb_linbrst_o;\n");
759 
  GEN ("output        swb_cycstb_o swb_linbrst_o;\n");
760 
  GEN ("output        cuc_ack_o;\n");
761 
  GEN ("output  [3:0] lwb_sel_o, swb_sel_o;\n");
762 
  GEN ("output [31:0] lwb_adr_o, swb_adr_o, swb_dat_o, cuc_dat_o;\n");
763 
  GEN ("input  [15:0] cuc_adr_i;\n");
764 
  GEN ("input  [31:0] lwb_dat_i, cuc_dat_i;\n\n");
765 924 markom 
 
766 
  GEN ("wire   [%2i:0] i_we, i_re, i_start, i_finish, i_selected, i_first_reg;\n", nrf - 1);
767 
  GEN ("wire   [%2i:0] i_bidok, main_start, main_end;\n", nrf - 1);
768 
  GEN ("reg    [%2i:0] i_go_bsy, main_start_r;\n", nrf - 1);
769 915 markom 
 
770 924 markom 
  GEN ("assign i_selected = {\n");
771 
  for (i = 0; i < nrf; i++)
772 
    GEN ("    cuc_adr_i[15:6] == %i%s\n", i, i < nrf - 1 ? "," : "};");
773 
 
774 
  GEN ("assign i_first_reg = {\n");
775 
  for (i = 0; i < nrf; i++) {
776 
    for (j = 0; j <= MAX_REGS; j++) if (f[i]->used_regs[j]) break;
777 
    GEN ("    cuc_adr_i[5:0] == %i%s\n", j, i < nrf - 1 ? "," : "};");
778 
  }
779 
 
780 
  GEN ("assign i_we = {%i{cuc_stb_i && cuc_we_i}} & i_selected;\n", nrf);
781 
  GEN ("assign i_re = {%i{cuc_stb_i && !cuc_we_i}} & i_selected;\n", nrf);
782 
 
783 
  GEN ("assign i_start = i_go_bsy & {%i{cuc_ack_o}};\n", nrf);
784 
  GEN ("assign i_start_bidok = {\n");
785 
  for (i = 0; i < nrf; i++)
786 
    GEN ("    i_start_bid[%i] < %i%s\n", i, i, i < nrf - 1 ? "," : "};");
787 
  GEN ("assign main_start = start_i & i_selected & i_first_reg & i_we;\n");
788 
  GEN ("assign main_end = {%i{end_i}} & i_selected;\n");
789 
 
790 
  GEN ("\nalways @(posedge clk or posedge rst)\n");
791 
  GEN ("begin\n");
792 
  GEN ("  if (rst) i_go_bsy <= #Tp %i'b0;\n", nrf);
793 
  GEN ("  else i_go_bsy <= #Tp i_we | ~i_finish & i_go_bsy;\n");
794 
  GEN ("end\n");
795 
 
796 915 markom 
  /* Function specific data */
797 
  for (i = 0; i < nfuncs; i++) if (f[i]) {
798 
    int ci = 0, co = 0;
799 
    int fn = f[i]->tmp;
800 
    GEN ("\n/* Registers for function %s */\n", prof_func[i].name);
801 
    for (j = 0, first = 1; j < MAX_REGS; j++) if (f[i]->used_regs[j]) {
802 924 markom 
      GEN ("%s i%i_r%ii", first ? "/* inputs */\nreg    [31:0]" : ",", fn, j);
803 915 markom 
      first = 0;
804 
      ci++;
805 
    }
806 
    if (ci) GEN (";\n");
807 
 
808 
    for (j = 0, first = 1; j < MAX_REGS; j++)
809 
      if (f[i]->lur[j] >= 0 && !f[i]->saved_regs[j]) {
810 924 markom 
        GEN ("%s i%i_r%io", first ? "/* outputs */\nreg    [31:0]" : ",", fn, j);
811 915 markom 
        first = 0;
812 
        co++;
813 
      }
814 
    if (co) GEN (";\n");
815 924 markom 
 
816 
    GEN ("always @(posedge clk or posedge rst)\n");
817 
    GEN ("  if (rst) main_start_r <= #Tp %i'b0;\n", nrf);
818 
    GEN ("  else main_start_r <= #Tp main_start & i_start_bidok | i_busy | ~i_end & main_start_r;\n");
819 915 markom 
 
820 
    if (ci) {
821 
      GEN ("\n/* write register access */\n");
822 
      GEN ("always @(posedge clk or posedge rst)\n");
823 
      GEN ("begin\n");
824 
      GEN ("  if (rst) begin\n");
825 
      for (j = 0; j < MAX_REGS; j++) if (f[i]->used_regs[j])
826 
        GEN ("    i%i_r%-2i <= #Tp 32'h0;\n", fn, j);
827 924 markom 
      GEN ("  end else if (!i_go_bsy[%i] && i_we[%i])\n", fn, fn);
828 915 markom 
      GEN ("    case (cuc_adr_i[5:0])\n");
829 
      for (j = 0; j < MAX_REGS; j++) if (f[i]->used_regs[j])
830 
        GEN ("      %-2i: r%i <= #Tp cuc_dat_i;\n", j, j);
831 
      GEN ("    endcase\n");
832 
      GEN ("end\n");
833 
    }
834 
 
835 924 markom 
    GEN ("\n");
836 915 markom 
  }
837 
 
838 924 markom 
  /* Generate machine for reading all function registers. Register read can be
839 
     delayed till function completion */
840 915 markom 
  {
841 
    int co;
842 
    GEN ("/* read register access - data */\n");
843 
    GEN ("always @(posedge clk or posedge rst)\n");
844 
    GEN ("  if (rst) cuc_dat_o <= #Tp 32'h0;\n");
845 
    GEN ("  else if (cuc_stb_i && cuc_we_i) begin\n");
846 
    GEN ("    ");
847 
 
848 
    for (i = 0; i < nfuncs; i++) if (f[i]) {
849 
      co = 0;
850 
      for (j = 0; j < MAX_REGS; j++)
851 
        if (f[i]->lur[j] >= 0 && !f[i]->saved_regs[j]) co++;
852 
 
853 924 markom 
      GEN ("if (cuc_addr_i[15:6] == %i)", f[i]->tmp);
854 915 markom 
      if (co) {
855 
        first = 1;
856 924 markom 
        GEN ("\n      case (cuc_adr_i[5:0])\n");
857 915 markom 
        for (j = 0; j < MAX_REGS; j++)
858 
          if (f[i]->lur[j] >= 0 && !f[i]->saved_regs[j])
859 
            GEN ("      %-2i: cuc_dat_o <= #Tp i%i_r%i;\n", j, f[i]->tmp, j);
860 
        GEN ("      endcase\n");
861 
      } else {
862 
        GEN ("      cuc_dat_o <= #Tp 32'hx;\n");
863 
      }
864 924 markom 
      GEN ("    else ");
865 915 markom 
    }
866 
    GEN ("cuc_dat_o <= #Tp 32'hx;\n");
867 
    GEN ("  else cuc_dat_o <= #Tp 32'hx;\n");
868 
    GEN ("end\n");
869 
 
870 
    GEN ("\n/* read register access - acknowledge */\n");
871 
    GEN ("always @(cuc_stb_i or cuc_we_i or cuc_adr_i");
872 
    for (i = 0; i < nrf; i++) GEN (" or main_end%i", i);
873 
    GEN (")\n");
874 924 markom 
    GEN ("  if (cuc_stb_i && cuc_we_i) cuc_ack_o <= #Tp |(i_selected & main_end)\n");
875 915 markom 
    GEN ("  else cuc_ack_o <= #Tp 1'b0;\n");
876 
    GEN ("end\n");
877 
  }
878 
 
879 
  for (j = 0; j < 2; j++) {
880 
    char t = j ? 's' : 'l';
881 
    GEN ("\n/* %s Wishbone bridge */\n", j ? "store" : "load");
882 924 markom 
    GEN ("reg [%i:0] %cm_sel;\n", log2 (nrf), t);
883 
    GEN ("reg [%i:0] %cm_bid;\n", log2 (nrf), t);
884 915 markom 
 
885 
    GEN ("\n/* highest bid */\n");
886 
    GEN ("always @(");
887 
    for (i = 0; i < nrf; i++) GEN ("%si%i_%cwb_cycstb", i > 0 ? " or " : "", i, t);
888 
    GEN (")\n");
889 
    for (i = 0; i < nrf; i++) GEN ("  %sif (i%i_%cwb_cycstb) %cm_bid <= %i'h%x;\n",
890 
                    i ? "else " : "", i, t, t, log2 (nrf) + 1, i);
891 
 
892 
    GEN ("\n/* selected transfer */\n");
893 
    GEN ("always @(posedge clk or posedge rst)\n");
894 
    GEN ("  if (rst) %cm_sel <= #Tp %cm_sel <= #Tp %i'h0;\n", t, t, log2 (nrf) + 1);
895 
    GEN ("  else if (%cwb_ack_i) %cm_sel <= #Tp %i'h0;\n", t, t, log2 (nrf) + 1);
896 
    GEN ("  else if (!%ccyc_ip) %cm_sel <= #Tp %cm_bid;\n", t, t, t);
897 
 
898 
    GEN ("\n/* Cycle */\n");
899 
    GEN ("assign %cwb_cyc_o = (lwb_cycstb | swb_cycstb);\n", t);
900 
    GEN ("assign %cwb_stb_o = %cwb_stb_o;\n", t, t);
901 
    GEN ("\nalways @(posedge clk or posedge rst)\n");
902 
    GEN ("  if (rst) %ccyc_ip <= #Tp 1'b0;\n", t);
903 
    GEN ("  else if (%cwb_ack_i) %ccyc_ip <= #Tp 1'b0;\n", t, t);
904 
    GEN ("  else %ccyc_ip <= #Tp %cwb_cyc_o;\n", t, t);
905 
  }
906 
 
907 
  GEN ("\n/* Acknowledge */\n");
908 
  for (i = 0; i < nrf; i++)
909 
    GEN ("assign i%i_swb_ack = ((sm_bid == %i & !scyc_ip) | sm_sel == %i) & swb_ack_i;\n", i, i, i);
910 
 
911 
  GEN ("\n/* Data */\n");
912 
  for (i = 0; i < nrf; i++) GEN ("wire [31:0] i%i_swb_dat;\n", i);
913 
  GEN ("\nassign swb_dat_o = ");
914 
  for (i = 0; i < nrf - 1; i++)
915 
    GEN ("\n  sm_bid == %i ? i%i_swb_dat : ", i, i);
916 
  GEN ("i%i_swb_dat;\n\n", nrf - 1);
917 
 
918 
  for (i = 0; i < nrf; i++) GEN ("wire [31:0] i%i_lwb_dat = lwb_dat_i;\n", i);
919 
 
920 
  GEN ("\n/* selects */\n");
921 
  for (i = 0; i < nrf; i++) GEN ("wire [3:0]  i%i_swb_sel, i%i_lwb_sel;\n", i, i);
922 
  GEN ("\nassign swb_sel_o = ");
923 
  for (i = 0; i < nrf - 1; i++)
924 
    GEN ("\n  sm_bid == %i ? i%i_swb_sel : ", i, i);
925 
  GEN ("i%i_swb_sel;\n", nrf - 1);
926 
  GEN ("\nassign lwb_sel_o = ");
927 
  for (i = 0; i < nrf - 1; i++)
928 
    GEN ("\n  lm_bid == %i ? i%i_lwb_sel : ", i, i);
929 
  GEN ("i%i_lwb_sel;\n", nrf - 1);
930 
 
931 
  GEN ("\n/* write enable */\n");
932 
  for (i = 0; i < nrf; i++) GEN ("wire i%i_swb_we, i%i_lwb_we;\n", i, i);
933 
  GEN ("\nassign swb_we_o = ");
934 
  for (i = 0; i < nrf - 1; i++) GEN ("\n  sm_bid == %i ? i%i_swb_we : ", i, i);
935 
  GEN ("i%i_swb_we;\n", nrf - 1);
936 
 
937 
  GEN ("\nassign lwb_we_o = ");
938 
  for (i = 0; i < nrf - 1; i++) GEN ("\n  lm_bid == %i ? i%i_lwb_we : ", i, i);
939 
  GEN ("i%i_lwb_we;\n", nrf - 1);
940 
 
941 
  GEN ("\n/* burst enable */\n");
942 
  for (i = 0; i < nrf; i++) GEN ("wire i%i_swb_linbrst, i%i_lwb_linbrst;\n", i, i);
943 
  GEN ("\nassign swb_linbrst_o = ");
944 
  for (i = 0; i < nrf - 1; i++) GEN ("\n  sm_bid == %i ? i%i_swb_linbrst : ", i, i);
945 
  GEN ("i%i_swb_linbrst;\n", nrf - 1);
946 
  GEN ("\n\nassign lwb_linbrst_o = ");
947 
  for (i = 0; i < nrf - 1; i++) GEN ("\n  lm_bid == %i ? i%i_lwb_linbrst : ", i, i);
948 
  GEN ("i%i_lwb_linbrst;\n", nrf - 1);
949 
 
950 
  /* start/end signals */
951 
  GEN ("\n\n/* start/end signals */\n");
952 
 
953 924 markom 
  for (i = 0; i < nrf; i++) {
954 
    if (log2 (maxncallees + 1))
955 
      GEN ("wire [%i:0] i%i_current = i%i_busy ? i%i_current_r : i%i_start_bid;\n",
956 
        log2 (maxncallees + 1), i, i, i, i, i);
957 
    else GEN ("wire i%i_current = 0;\n", i);
958 
  }
959 
  GEN ("\n");
960 
 
961 915 markom 
  for (i = 0, first = 1; i < nrf; i++) {
962 924 markom 
    GEN ("%si%i_current == %i && i_end[%i]", first ? "assign end_o = " : "\n  || ", i, ncallees[i], i);
963 915 markom 
    first = 0;
964 
  }
965 
  GEN (";\n\n");
966 
 
967 
  for (i = 0, j = 0; i < nfuncs; i++) if (f[i]) {
968 
    if (log2 (ncallees[i])) {
969 
      GEN ("reg [%i:0] i%i_start_bid;\n", log2 (ncallees[i]), j);
970 
      GEN ("always @(start%i", f[i]->tmp);
971 
      for (j = 0, first = 1; j < f[i]->nfdeps; j++)
972 
        if (f[i]->fdeps[j]) GEN (", ");
973 
      GEN (")\n");
974 
      GEN ("begin !!!\n"); //TODO
975 
      GEN ("  \n");
976 
      GEN ("end\n");
977 
    }
978 924 markom 
    GEN ("wire i%i_start = main_start[%i];\n", j, j);
979 915 markom 
    j++;
980 
  }
981 
  GEN ("\n");
982 
 
983 
  for (i = 0; i < nfuncs; i++) if (f[i]) {
984 
    int nf = f[i]->tmp;
985 
    GEN ("\n%s i%i(.clk(clk), .rst(rst),\n", prof_func[i].name, nf);
986 
    GEN ("");
987 
    GEN ("  .lwb_adr_o(i%i_lwb_adr), .lwb_dat_i(i%i_lwb_dat), .lwb_cycstb_o(i%i_lwb_cycstb),\n",
988 
                    nf, nf, nf);
989 
    GEN ("  .lwb_sel_o(i%i_lwb_sel), .lwb_linbrst_o(i%i_lwb_linbrst), .lwb_ack_i(i%i_lwb_ack),\n",
990 
                    nf, nf, nf);
991 
    GEN ("  .swb_adr_o(i%i_swb_adr), .swb_dat_o(i%i_swb_dat), .swb_cycstb_o(i%i_swb_cycstb),\n",
992 
                    nf, nf, nf);
993 
    GEN ("  .swb_sel_o(i%i_swb_sel), .swb_linbrst_o(i%i_swb_linbrst), .swb_ack_i(i%i_swb_ack),\n",
994 
                    nf, nf, nf);
995 
    GEN ("  ");
996 924 markom 
    for (j = 0, first = 1; j < MAX_REGS; j++) if (f[i]->used_regs[j])
997 
      GEN (".r%i_i(i_r%ii[%i]), ", j, j, nf), first = 0;
998 915 markom 
 
999 924 markom 
    if (first) GEN ("\n  ");
1000 915 markom 
    for (j = 0, first = 1; j < MAX_REGS; j++)
1001 
      if (f[i]->lur[j] >= 0 && !f[i]->saved_regs[j])
1002 924 markom 
        GEN (".r%i_o(i_r%io[%i]), ", j, j, nf), first = 0;
1003 
    if (first) GEN ("\n  ");
1004 
    if (f[i]->nfdeps) {
1005 
      GEN (".fstart_o(i_fstart[%i]), .fend_i(i_fend[%i]), .fid_o(i%i_fid),\n", i, i, i),
1006 
      GEN ("  .fr3_o(i%i_fr3), .fr4_o(i%i_fr4), .fr5_o(i%i_fr5), .fr6_o(i%i_fr6),\n");
1007 
      GEN ("  .fr7_o(i%i_fr7), .fr8_o(i%i_fr8), .fr11_i(i%i_fr11i),\n  ");
1008 
    }
1009 
    GEN (".start_i(i_start[%i]), .end_o(i_end[%i]), .busy_o(i_busy[%i]));\n", nf, nf, nf);
1010 915 markom 
  }
1011 
 
1012 
  /* output footer */
1013 
  GEN ("\nendmodule\n");
1014 
 
1015 
  fclose (fo);
1016 
}
1017 
 

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