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[/] [or1k/] [tags/] [nog_patch_68/] [or1ksim/] [cuc/] [verilog.c] - Blame information for rev 926

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

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