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[/] [or1k/] [tags/] [stable_0_1_0/] [or1ksim/] [cuc/] [verilog.c] - Blame information for rev 924

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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 
 
137 915 markom 
      GEN ("  if (rst) t%x_%x <= #Tp 32'h0;\n", b, i);
138 
      GEN ("  else 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);
158 879 markom 
    assert (f->bb[b].prev[0] >= 0);
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) {
161 915 markom 
    GEN ("  if (rst) t%x_%x <= #Tp 32'h0;\n", b, i);
162 879 markom 
    assert (ii->opt[1] == OPT_REF);
163 915 markom 
    GEN ("  else if (");
164 879 markom 
    if (f->bb[b].mdep) print_deps (fo, f, b, f->bb[b].mdep, 0);
165 915 markom 
    else GEN ("bb_stb[%i]", b);
166 
    GEN (") t%x_%x <= #Tp t%x_%x;\n",  b, i,
167 879 markom 
                    REF_BB (ii->op[1]), REF_I (ii->op[1]));
168 
  }
169 
}
170 
 
171 
/* Outputs binary number */
172 907 markom 
static char *bin_str (unsigned long x, int len)
173 879 markom 
{
174 
  static char bx[33];
175 
  char *s = bx;
176 
  while (len > 0) *s++ = '0' + ((x >> --len) & 1);
177 
  *s = '\0';
178 
  return bx;
179 
}
180 
 
181 
/* Returns index of branch instruction inside a block b */
182 907 markom 
static int branch_index (cuc_bb *bb)
183 879 markom 
{
184 
  int i;
185 
  for (i = bb->ninsn - 1; i >= 0; i--)
186 
    if (bb->insn[i].type & IT_BRANCH) return i;
187 
  return -1;
188 
}
189 
 
190 907 markom 
static void print_turn_off_dep (FILE *fo, cuc_func *f, dep_list *dep)
191 
{
192 
  while (dep) {
193 
    assert (f->INSN(dep->ref).type & IT_MEMORY || f->INSN(dep->ref).index == II_CALL);
194 915 markom 
    GEN ("      %c_stb[%i] <= #Tp 1'b0;\n", f->INSN(dep->ref).index == II_CALL ? 'f'
195 907 markom 
            : II_IS_LOAD (f->INSN(dep->ref).index) ? 'l' : 's', find_lsc_index (f, dep->ref));
196 
    dep = dep->next;
197 
  }
198 
}
199 
 
200 
static int func_index (cuc_func *f, int ref)
201 
{
202 
  int i;
203 
  unsigned long addr;
204 
  assert (f->INSN(ref).index == II_CALL && f->INSN(ref).opt[0] & OPT_CONST);
205 
  addr = f->INSN(ref).op[0];
206 
  for (i = 0; i < f->nfdeps; i++)
207 
    if (f->fdeps[i]->start_addr == addr) return i;
208 
 
209 
  assert (0);
210 
  return -1;
211 
}
212 
 
213 879 markom 
/* Generates verilog file out of insn dataflow */
214 
void output_verilog (cuc_func *f, char *filename)
215 
{
216 
  FILE *fo;
217 
  int b, i, j;
218 
  int ci = 0, co = 0;
219 907 markom 
  int nloads = 0, nstores = 0, ncalls = 0;
220 879 markom 
  char tmp[256];
221 
  cuc_bb *end_bb = NULL;
222 
  int end_bb_no = -1;
223 
  sprintf (tmp, "%s.v", filename);
224 
 
225 902 markom 
  log ("Generating verilog file \"%s\"\n", tmp);
226 
  printf ("Generating verilog file \"%s\"\n", tmp);
227 879 markom 
  if ((fo = fopen (tmp, "wt+")) == NULL) {
228 
    fprintf (stderr, "Cannot open '%s'\n", tmp);
229 
    exit (1);
230 
  }
231 
 
232 883 markom 
  for (b = 0; b < f->num_bb; b++)
233 879 markom 
    if (f->bb[b].type & BB_END) end_bb = &f->bb[end_bb_no = b];
234 
  assert (end_bb && end_bb->type & BB_END);
235 
 
236 
  /* output header */
237 915 markom 
  GEN ("/* %s -- generated by OpenRISC Custom Unit Compiler\n", tmp);
238 
  GEN ("   (C) 2002 OpenCores http://www.opencores.org/\n");
239 
  GEN ("   function   \"%s\"\n", filename);
240 
  GEN ("   at         %08x - %08x\n", f->start_addr, f->end_addr);
241 
  GEN ("   num BBs    %i */\n\n", f->num_bb);
242 
  GEN ("module %s (clk, rst,\n", filename);
243 
  GEN ("              lwb_adr_o, lwb_dat_i, lwb_cycstb_o,\n");
244 
  GEN ("              lwb_sel_o, lwb_linbrst_o, lwb_ack_i,\n");
245 
  GEN ("              swb_adr_o, swb_dat_o, swb_cycstb_o,\n");
246 
  GEN ("              swb_sel_o, swb_linbrst_o, swb_ack_i,\n");
247 879 markom 
 
248 915 markom 
  GEN ("/* inputs */  ");
249 879 markom 
  for (i = 0; i < MAX_REGS; i++)
250 883 markom 
    if (f->used_regs[i]) {
251 915 markom 
      GEN ("r%i_i, ", i);
252 879 markom 
      ci++;
253 
    }
254 915 markom 
  if (!ci) GEN ("/* NONE */");
255 879 markom 
 
256 915 markom 
  GEN ("\n/* outputs */ ");
257 879 markom 
  for (i = 0; i < MAX_REGS; i++)
258 883 markom 
    if (f->lur[i] >= 0 && !f->saved_regs[i]) {
259 915 markom 
      GEN ("r%i_o, ", i);
260 879 markom 
      co++;
261 
    }
262 
 
263 915 markom 
  if (!co) GEN ("/* NONE */");
264 907 markom 
  if (f->nfdeps) {
265 915 markom 
    GEN ("\n/* f. calls */, fstart_o, %sfend_i, fr11_i, ",
266 907 markom 
                    log2 (f->nfdeps) > 0 ? "fid_o, " : "");
267 915 markom 
    for (i = 0; i < 6; i++) GEN ("fr%i_o, ", i + 3);
268 907 markom 
  }
269 915 markom 
  GEN ("\n              start_i, end_o, busy_o);\n\n");
270 879 markom 
 
271 915 markom 
  GEN ("parameter Tp = 1;\n\n");
272 
 
273 
  GEN ("input         clk, rst;\n");
274 
  GEN ("input         start_i;\t/* Module starts when set to 1 */ \n");
275 
  GEN ("output        end_o;\t/* Set when module finishes, cleared upon start_i == 1 */\n");
276 
  GEN ("output        busy_o;\t/* Set when module should not be interrupted */\n");
277 
  GEN ("\n/* Bus signals */\n");
278 
  GEN ("output        lwb_cycstb_o, swb_cycstb_o;\n");
279 
  GEN ("input         lwb_ack_i, swb_ack_i;\n");
280 
  GEN ("output  [3:0] lwb_sel_o, swb_sel_o;\n");
281 
  GEN ("output [31:0] lwb_adr_o, swb_adr_o;\n");
282 
  GEN ("output        lwb_linbrst_o, swb_linbrst_o;\n");
283 
  GEN ("input  [31:0] lwb_dat_i;\n");
284 
  GEN ("output [31:0] swb_dat_o;\n\n");
285 879 markom 
 
286 915 markom 
  GEN ("reg           lwb_cycstb_o, swb_cycstb_o;\n");
287 
  GEN ("reg    [31:0] lwb_adr_o, swb_adr_o;\n");
288 
  GEN ("reg     [3:0] lwb_sel_o, swb_sel_o;\n");
289 
  GEN ("reg    [31:0] swb_dat_o;\n");
290 
  GEN ("reg           lwb_linbrst_o, swb_linbrst_o;\n");
291 879 markom 
 
292 915 markom 
  if (ci || co) GEN ("\n/* module ports */\n");
293 879 markom 
  if (ci) {
294 
    int first = 1;
295 915 markom 
    GEN ("input  [31:0]");
296 879 markom 
    for (i = 0; i < MAX_REGS; i++)
297 883 markom 
      if (f->used_regs[i]) {
298 915 markom 
        GEN ("%sr%i_i", first ? " " : ", ", i);
299 879 markom 
        first = 0;
300 
      }
301 915 markom 
    GEN (";\n");
302 879 markom 
  }
303 
 
304 
  if (co) {
305 
    int first = 1;
306 915 markom 
    GEN ("output [31:0]");
307 879 markom 
    for (i = 0; i < MAX_REGS; i++)
308 883 markom 
      if (f->lur[i] >= 0 && !f->saved_regs[i]) {
309 915 markom 
        GEN ("%sr%i_o", first ? " " : ", ", i);
310 879 markom 
        first = 0;
311 
      }
312 915 markom 
    GEN (";\n");
313 879 markom 
  }
314 
 
315 907 markom 
  if (f->nfdeps) {
316 915 markom 
    GEN ("\n/* Function calls */\n");
317 
    GEN ("output [31:0] fr3_o");
318 
    for (i = 1; i < 6; i++) GEN (", fr%i_o", i + 3);
319 
    GEN (";\n");
320 924 markom 
    GEN ("input  [31:0] fr11_i;\n");
321 915 markom 
    if (log2(f->nfdeps) > 0) GEN ("output [%i:0] fid_o;\n", log2(f->nfdeps));
322 
    GEN ("output        fstart_o;\n");
323 
    GEN ("input         fend_i;\n");
324 907 markom 
  }
325 
 
326 879 markom 
  /* Count loads & stores */
327 
  for (i = 0; i < f->nmsched; i++)
328 907 markom 
    if (f->mtype[i] & MT_STORE) nstores++;
329 
    else if (f->mtype[i] & MT_LOAD) nloads++;
330 
    else if (f->mtype[i] & MT_CALL) ncalls++;
331 879 markom 
 
332 
  /* Output internal registers for loads */
333 
  if (nloads) {
334 
    int first = 1;
335 883 markom 
    int num = 0;
336 915 markom 
    GEN ("\n/* internal registers for loads */\n");
337 879 markom 
    for (i = 0; i < f->nmsched; i++)
338 907 markom 
      if (f->mtype[i] & MT_LOAD) {
339 915 markom 
        GEN ("%st%x_%x", first ? "reg    [31:0] " : ", ",
340 879 markom 
                REF_BB(f->msched[i]), REF_I(f->msched[i]));
341 883 markom 
 
342 
        if (num >= 8) {
343 915 markom 
          GEN (";\n");
344 883 markom 
          first = 1;
345 
          num = 0;
346 
        } else {
347 
          first = 0;
348 
          num++;
349 
        }
350 879 markom 
      }
351 915 markom 
    if (!first) GEN (";\n");
352 879 markom 
  }
353 
 
354 907 markom 
  /* Internal register for function return value */
355 
  if (f->nfdeps) {
356 915 markom 
    GEN ("\n/* Internal register for function return value */\n");
357 
    GEN ("reg     [31:0] fr11_r;\n");
358 907 markom 
  }
359 
 
360 915 markom 
  GEN ("\n/* 'zero or one' hot state machines */\n");
361 
  if (nloads) GEN ("reg     [%i:0] l_stb; /* loads */\n", nloads - 1);
362 
  if (nstores) GEN ("reg     [%i:0] s_stb; /* stores */\n", nstores - 1);
363 
  GEN ("reg     [%i:0] bb_stb; /* basic blocks */\n", f->num_bb - 1);
364 879 markom 
 
365 
  {
366 883 markom 
    int first = 2;
367 879 markom 
    int num = 0;
368 
    for (b = 0; b < f->num_bb; b++)
369 
      for (i = 0; i < f->bb[b].ninsn; i++)
370 
        if (f->bb[b].insn[i].type & IT_COND
371 
         && f->bb[b].insn[i].index != II_REG
372 
         && f->bb[b].insn[i].index != II_LRBB) {
373 915 markom 
          if (first == 2) GEN ("\n/* basic block condition wires */\n");
374 
          GEN ("%st%x_%x", first ? "wire          " : ", ", b, i);
375 883 markom 
          if (num >= 8) {
376 915 markom 
            GEN (";\n");
377 879 markom 
            first = 1;
378 
            num = 0;
379 
          } else {
380 
            first = 0;
381 
            num++;
382 
          }
383 
        }
384 915 markom 
    if (!first) GEN (";\n");
385 879 markom 
 
386 915 markom 
    GEN ("\n/* forward declaration of normal wires */\n");
387 879 markom 
    num = 0;
388 
    first = 1;
389 
    for (b = 0; b < f->num_bb; b++)
390 
      for (i = 0; i < f->bb[b].ninsn; i++)
391 
        if (!(f->bb[b].insn[i].type & (IT_COND | IT_BRANCH))
392 
         && f->bb[b].insn[i].index != II_REG
393 
         && f->bb[b].insn[i].index != II_LRBB) {
394 
          /* Exclude loads */
395 
          if (f->bb[b].insn[i].type & IT_MEMORY && II_IS_LOAD (f->bb[b].insn[i].index)) continue;
396 915 markom 
          GEN ("%st%x_%x", first ? "wire   [31:0] " : ", ", b, i);
397 883 markom 
          if (num >= 8) {
398 915 markom 
            GEN (";\n");
399 879 markom 
            first = 1;
400 
            num = 0;
401 
          } else {
402 
            first = 0;
403 
            num++;
404 
          }
405 
        }
406 915 markom 
    if (!first) GEN (";\n");
407 879 markom 
 
408 915 markom 
    GEN ("\n/* forward declaration registers */\n");
409 879 markom 
    num = 0;
410 
    first = 1;
411 
    for (b = 0; b < f->num_bb; b++)
412 
      for (i = 0; i < f->bb[b].ninsn; i++)
413 
        if (f->bb[b].insn[i].index == II_REG
414 
         && f->bb[b].insn[i].index != II_LRBB) {
415 915 markom 
          GEN ("%st%x_%x", first ? "reg    [31:0] " : ", ", b, i);
416 883 markom 
          if (num >= 8) {
417 915 markom 
            GEN (";\n");
418 879 markom 
            first = 1;
419 
            num = 0;
420 
          } else {
421 
            first = 0;
422 
            num++;
423 
          }
424 
        }
425 915 markom 
    if (!first) GEN (";\n");
426 879 markom 
 
427 
    num = 0;
428 
    first = 1;
429 
    for (b = 0; b < f->num_bb; b++)
430 
      for (i = 0; i < f->bb[b].ninsn; i++)
431 
        if (f->bb[b].insn[i].index != II_REG
432 
         && f->bb[b].insn[i].index == II_LRBB) {
433 915 markom 
          GEN ("%st%x_%x", first ? "reg           " : ", ", b, i);
434 883 markom 
          if (num >= 8) {
435 915 markom 
            GEN (";\n");
436 879 markom 
            first = 1;
437 
            num = 0;
438 
          } else {
439 
            first = 0;
440 
            num++;
441 
          }
442 
        }
443 915 markom 
    if (!first) GEN (";\n");
444 879 markom 
  }
445 
 
446 915 markom 
  if (nloads || nstores) GEN ("\n/* dependencies */\n");
447 
  if (nloads) GEN ("wire    [%i:0] l_end = l_stb & {%i{lwb_ack_i}};\n",
448 879 markom 
                  nloads - 1, nloads);
449 915 markom 
  if (nstores) GEN ("wire    [%i:0] s_end = s_stb & {%i{swb_ack_i}};\n",
450 879 markom 
                  nstores - 1, nstores);
451 915 markom 
  if (ncalls) GEN ("wire    [%i:0] f_end = f_stb & {%i{fend_i}};\n",
452 907 markom 
                  ncalls - 1, ncalls);
453 879 markom 
 
454 915 markom 
  GEN ("\n/* last dependency */\n");
455 
  GEN ("wire   end_o = bb_stb[%i]", end_bb_no);
456 879 markom 
  if (end_bb->mdep) {
457 915 markom 
    GEN (" && ");
458 879 markom 
    print_deps (fo, f, end_bb_no, end_bb->mdep, 0);
459 
  }
460 907 markom 
 
461 879 markom 
  /* Is there a loop right at end? */
462 
  if (end_bb->next[0] >= 0) {
463 
    int bidx = branch_index (end_bb);
464 
    char t[30];
465 
    print_op_v (f, t, REF (end_bb_no, bidx), 1);
466 915 markom 
    GEN (" && !%s", t);
467 879 markom 
  }
468 915 markom 
  GEN (";\n");
469 924 markom 
  GEN ("wire   busy_o = |bb_stb;\n");
470 
 
471 879 markom 
 
472 915 markom 
  GEN ("\n/* Basic block triggers */\n");
473 
  GEN ("wire   [%2i:0] bb_start = {\n", f->num_bb - 1);
474 879 markom 
  for (b = f->num_bb - 1; b >= 0; b--) {
475 915 markom 
    GEN ("    /* bb_start[%2i] */ ", b);
476 
    if (f->bb[b].prev[0] < 0) GEN ("start_i");
477 879 markom 
    else {
478 
      cuc_bb *prev = &f->bb[f->bb[b].prev[0]];
479 
      int t;
480 
      if (prev->mdep) {
481 
        print_deps (fo, f, f->bb[b].prev[0], prev->mdep, 0);
482 915 markom 
        GEN (" && ");
483 879 markom 
      }
484 915 markom 
      GEN ("bb_stb[%i]", f->bb[b].prev[0]);
485 879 markom 
      if (prev->next[0] >= 0 && prev->next[1] >= 0) {
486 924 markom 
        int bi = REF (f->bb[b].prev[0], branch_index (&f->bb[f->bb[b].prev[0]]));
487 
        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 
      if (f->bb[b].prev[1] >= 0) {
501 
        prev = &f->bb[f->bb[b].prev[1]];
502 915 markom 
        GEN ("\n                    || ");
503 879 markom 
        if (prev->mdep) {
504 
          print_deps (fo, f, f->bb[b].prev[1], prev->mdep, 0);
505 915 markom 
          GEN (" && ");
506 879 markom 
        }
507 915 markom 
        GEN ("bb_stb[%i]", f->bb[b].prev[1]);
508 879 markom 
        if (prev->next[0] >= 0 && prev->next[1] >= 0) {
509 
          int bidx = branch_index (&f->bb[f->bb[b].prev[1]]);
510 
          assert (bidx >= 0);
511 915 markom 
          GEN (" && ");
512 879 markom 
          t = prev->next[0] == b;
513 915 markom 
          GEN ("%st%x_%x", t ? "" : "!", f->bb[b].prev[1], bidx);
514 879 markom 
        }
515 
      }
516 
    }
517 915 markom 
    if (b == 0) GEN ("};\n");
518 
    else GEN (",\n");
519 879 markom 
  }
520 
 
521 915 markom 
  GEN ("\n/* Register the bb_start */\n");
522 
  GEN ("reg   [%2i:0] bb_start_r;\n\n", f->num_bb - 1);
523 
  GEN ("always @(posedge rst or posedge clk)\n");
524 
  GEN ("begin\n");
525 
  GEN ("  if (rst) bb_start_r <= #Tp %i'b0;\n", f->num_bb);
526 
  GEN ("  else if (end_o) bb_start_r <= #Tp %i'b0;\n", f->num_bb);
527 
  GEN ("  else bb_start_r <= #Tp bb_start;\n");
528 
  GEN ("end\n");
529 879 markom 
 
530 915 markom 
  GEN ("\n/* Logic */\n");
531 879 markom 
  /* output body */
532 
  for (b = 0; b < f->num_bb; b++) {
533 915 markom 
    GEN ("\t\t/* BB%i */\n", b);
534 879 markom 
    for (i = 0; i < f->bb[b].ninsn; i++)
535 
      print_insn_v (fo, f, b, i);
536 915 markom 
    GEN ("\n");
537 879 markom 
  }
538 
 
539 
  if (co) {
540 915 markom 
    GEN ("\n/* Outputs */\n");
541 879 markom 
    for (i = 0; i < MAX_REGS; i++)
542 883 markom 
      if (f->lur[i] >= 0 && !f->saved_regs[i])
543 915 markom 
        GEN ("assign r%i_o = t%x_%x;\n", i, REF_BB(f->lur[i]),
544 883 markom 
                        REF_I(f->lur[i]));
545 879 markom 
  }
546 
 
547 
  if (nstores) {
548 
    int cur_store = 0;
549 915 markom 
    GEN ("\n/* Memory stores */\n");
550 
    GEN ("always @(posedge clk or posedge rst)\nbegin\n");
551 
    GEN ("  if (rst) swb_dat_o <= #Tp 32'h0;\n");
552 879 markom 
    for (i = 0; i < f->nmsched; i++)
553 907 markom 
      if (f->mtype[i] & MT_STORE) {
554 879 markom 
        char t[30];
555 915 markom 
        GEN ("  else if (s_stb[%i]) swb_dat_o <= #Tp %s;\n", cur_store++,
556 879 markom 
                        print_op_v (f, t, f->msched[i], 0));
557 
        //printf ("msched[%i] = %x (mtype %x) %x\n", i, f->msched[i], f->mtype[i], f->INSN(f->msched[i]).op[0]);
558 
      }
559 915 markom 
    GEN ("end\n");
560 879 markom 
  }
561 
 
562 
  if (nloads) {
563 
    int cur_load = 0;
564 915 markom 
    GEN ("\n/* Load state machine */\n");
565 
    GEN ("always @(posedge clk or posedge rst)\n");
566 
    GEN ("begin\n");
567 
    GEN ("  if (rst) begin\n");
568 
    GEN ("    l_stb <= #Tp %i'h0;\n", nloads);
569 
    GEN ("    lwb_cycstb_o <= #Tp 1'b0;\n");
570 
    GEN ("    lwb_sel_o[3:0] <= #Tp 4'b0000;\n");
571 
    GEN ("    lwb_linbrst_o <= #Tp 1'b0;\n");
572 
    GEN ("    lwb_adr_o <= #Tp 32'h0;\n");
573 
    GEN ("  end else begin\n");
574 883 markom 
    cucdebug (1, "loads \n");
575 907 markom 
    for (i = 0; i < f->nmsched; i++) if (f->mtype[i] & MT_LOAD) {
576 879 markom 
      char t[30];
577 
      dep_list *dep = f->INSN(f->msched[i]).dep;
578 883 markom 
      cucdebug (1, "msched[%i] = %x (mtype %x)\n", i, f->msched[i], f->mtype[i]);
579 879 markom 
      assert (f->INSN(f->msched[i]).opt[1] & (OPT_REF | OPT_REGISTER));
580 915 markom 
      GEN ("    if (");
581 879 markom 
      print_deps (fo, f, REF_BB(f->msched[i]), f->INSN(f->msched[i]).dep, 1);
582 915 markom 
      GEN (") begin\n");
583 907 markom 
      print_turn_off_dep (fo, f, dep);
584 915 markom 
      GEN ("      l_stb[%i] <= #Tp 1'b1;\n", cur_load++);
585 
      GEN ("      lwb_cycstb_o <= #Tp 1'b1;\n");
586 
      GEN ("      lwb_sel_o[3:0] <= #Tp 4'b");
587 879 markom 
      switch (f->mtype[i] & MT_WIDTH) {
588 915 markom 
        case 1: GEN ("0001 << (%s & 32'h3);\n",
589 879 markom 
                                print_op_v (f, t, f->msched[i], 1)); break;
590 915 markom 
        case 2: GEN ("0011 << ((%s & 32'h1) << 1);\n",
591 879 markom 
                                print_op_v (f, t, f->msched[i], 1)); break;
592 915 markom 
        case 4: GEN ("1111;\n"); break;
593 879 markom 
        default: assert (0);
594 
      }
595 915 markom 
      GEN ("      lwb_linbrst_o <= #Tp 1'b%i;\n",
596 879 markom 
                      (f->mtype[i] & MT_BURST) && !(f->mtype[i] & MT_BURSTE) ? 1 : 0);
597 915 markom 
      GEN ("      lwb_adr_o <= #Tp t%x_%x & ~32'h3;\n",
598 879 markom 
                      REF_BB(f->INSN(f->msched[i]).op[1]), REF_I(f->INSN(f->msched[i]).op[1]));
599 915 markom 
      GEN ("    end\n");
600 879 markom 
    }
601 915 markom 
    GEN ("    if (l_end[%i]) begin\n", nloads - 1);
602 
    GEN ("      l_stb <= #Tp %i'h0;\n", nloads);
603 
    GEN ("      lwb_cycstb_o <= #Tp 1'b0;\n");
604 
    GEN ("      lwb_sel_o[3:0] <= #Tp 4'b0000;\n");
605 
    GEN ("      lwb_linbrst_o <= #Tp 1'b0;\n");
606 
    GEN ("      lwb_adr_o <= #Tp 32'h0;\n");
607 
    GEN ("    end\n");
608 
    GEN ("  end\n");
609 
    GEN ("end\n");
610 879 markom 
  }
611 
 
612 
  if (nstores) {
613 
    int cur_store = 0;
614 915 markom 
    GEN ("\n/* Store state machine */\n");
615 
    GEN ("always @(posedge clk or posedge rst)\n");
616 
    GEN ("begin\n");
617 
    GEN ("  if (rst) begin\n");
618 
    GEN ("    s_stb <= #Tp %i'h0;\n", nstores);
619 
    GEN ("    swb_cycstb_o <= #Tp 1'b0;\n");
620 
    GEN ("    swb_sel_o[3:0] <= #Tp 4'b0000;\n");
621 
    GEN ("    swb_linbrst_o <= #Tp 1'b0;\n");
622 
    GEN ("    swb_adr_o <= #Tp 32'h0;\n");
623 
    GEN ("  end else begin\n");
624 883 markom 
    cucdebug (1, "stores \n");
625 907 markom 
    for (i = 0; i < f->nmsched; i++) if (f->mtype[i] & MT_STORE) {
626 879 markom 
      char t[30];
627 
      dep_list *dep = f->INSN(f->msched[i]).dep;
628 883 markom 
      cucdebug (1, "msched[%i] = %x (mtype %x)\n", i, f->msched[i], f->mtype[i]);
629 879 markom 
      assert (f->INSN(f->msched[i]).opt[1] & (OPT_REF | OPT_REGISTER));
630 915 markom 
      GEN ("    if (");
631 879 markom 
      print_deps (fo, f, REF_BB(f->msched[i]), f->INSN(f->msched[i]).dep, 1);
632 915 markom 
      GEN (") begin\n");
633 907 markom 
      print_turn_off_dep (fo, f, dep);
634 915 markom 
      GEN ("      s_stb[%i] <= #Tp 1'b1;\n", cur_store++);
635 
      GEN ("      swb_cycstb_o <= #Tp 1'b1;\n");
636 
      GEN ("      swb_sel_o[3:0] <= #Tp 4'b");
637 879 markom 
      switch (f->mtype[i] & MT_WIDTH) {
638 915 markom 
        case 1: GEN ("0001 << (%s & 32'h3);\n",
639 879 markom 
                                print_op_v (f, t, f->msched[i], 1)); break;
640 915 markom 
        case 2: GEN ("0011 << ((%s & 32'h1) << 1);\n",
641 879 markom 
                                print_op_v (f, t, f->msched[i], 1)); break;
642 915 markom 
        case 4: GEN ("1111;\n"); break;
643 879 markom 
        default: assert (0);
644 
      }
645 915 markom 
      GEN ("      swb_linbrst_o <= #Tp 1'b%i;\n",
646 879 markom 
                      (f->mtype[i] & MT_BURST) && !(f->mtype[i] & MT_BURSTE) ? 1 : 0);
647 915 markom 
      GEN ("      swb_adr_o <= #Tp t%x_%x & ~32'h3;\n",
648 879 markom 
                      REF_BB(f->INSN(f->msched[i]).op[1]), REF_I(f->INSN(f->msched[i]).op[1]));
649 915 markom 
      GEN ("    end\n");
650 879 markom 
    }
651 915 markom 
    GEN ("    if (s_end[%i]) begin\n", nstores - 1);
652 
    GEN ("      s_stb <= #Tp %i'h0;\n", nstores);
653 
    GEN ("      swb_cycstb_o <= #Tp 1'b0;\n");
654 
    GEN ("      swb_sel_o[3:0] <= #Tp 4'b0000;\n");
655 
    GEN ("      swb_linbrst_o <= #Tp 1'b0;\n");
656 
    GEN ("      swb_adr_o <= #Tp 32'h0;\n");
657 
    GEN ("    end\n");
658 
    GEN ("  end\n");
659 
    GEN ("end\n");
660 879 markom 
  }
661 
 
662 907 markom 
  if (ncalls) {
663 
    int cur_call = 0;
664 915 markom 
    GEN ("\n/* Function calls state machine */\n");
665 
    GEN ("always @(posedge clk or posedge rst)\n");
666 
    GEN ("begin\n");
667 
    GEN ("  if (rst) begin\n");
668 
    GEN ("    f_stb <= #Tp %i'h0;\n", nstores);
669 
    for (i = 0; i < 6; i++) GEN ("    fr%i_o <= #Tp 32'h0;\n", i + 3);
670 
    if (log2(ncalls)) GEN ("    fid_o <= #Tp %i'h0;\n", log2 (f->nfdeps));
671 
    GEN ("    fstart_o <= #Tp 1'b0;\n");
672 
    //GEN ("    f11_r <= #Tp 32'h0;\n");
673 
    GEN ("  end else begin\n");
674 907 markom 
    cucdebug (1, "calls \n");
675 
    for (i = 0; i < f->nmsched; i++) if (f->mtype[i] & MT_CALL) {
676 
      char t[30];
677 
      dep_list *dep = f->INSN(f->msched[i]).dep;
678 
      cucdebug (1, "msched[%i] = %x (mtype %x)\n", i, f->msched[i], f->mtype[i]);
679 
      assert (f->INSN(f->msched[i]).opt[1] & (OPT_REF | OPT_REGISTER));
680 915 markom 
      GEN ("    if (");
681 907 markom 
      print_deps (fo, f, REF_BB(f->msched[i]), f->INSN(f->msched[i]).dep, 1);
682 915 markom 
      GEN (") begin\n");
683 907 markom 
      print_turn_off_dep (fo, f, dep);
684 915 markom 
      GEN ("      f_stb[%i] <= #Tp 1'b1;\n", cur_call++);
685 
      GEN ("      fstart_o <= #Tp 1'b1;\n");
686 907 markom 
      if (log2 (f->nfdeps))
687 915 markom 
        GEN ("      fid_o <= #Tp %i'h%x;\n", log2 (f->nfdeps), func_index (f, f->msched[i]));
688 907 markom 
 
689 
      for (j = 0; j < 6; j++)
690 915 markom 
        GEN ("      fr%i_o <= #Tp t%x_%x;\n", j + 3,
691 907 markom 
                       REF_BB (f->msched[i]), REF_I (f->msched[i]) - 6 + i);
692 915 markom 
      GEN ("    end\n");
693 907 markom 
    }
694 915 markom 
    GEN ("    if (f_end[%i]) begin\n", ncalls - 1);
695 
    GEN ("      f_stb <= #Tp %i'h0;\n", ncalls);
696 
    GEN ("      f_start_o <= #Tp 1'b0;\n");
697 
    GEN ("    end\n");
698 
    GEN ("  end\n");
699 
    GEN ("end\n");
700 907 markom 
  }
701 
 
702 915 markom 
  GEN ("\n/* Basic blocks state machine */\n");
703 
  GEN ("always @(posedge clk or posedge rst)\n");
704 
  GEN ("begin\n");
705 
  GEN ("  if (rst) bb_stb <= #Tp %i'h%x;\n", f->num_bb, 0);
706 
  GEN ("  else if (end_o) bb_stb <= #Tp %i'h%x;\n", f->num_bb, 0);
707 879 markom 
  for (i = 0; i < f->num_bb; i++) {
708 924 markom 
    GEN ("  end else if (bb_start[%i]) begin\n", i);
709 915 markom 
    GEN ("    bb_stb <= #Tp %i'h%x;\n", f->num_bb, 1 << i);
710 879 markom 
  }
711 915 markom 
  GEN ("  end else if (end_o) begin\n");
712 
  GEN ("    bb_stb <= #Tp %i'h%x;\n", f->num_bb, 0);
713 
  GEN ("  end\n");
714 
  GEN ("end\n");
715 879 markom 
 
716 
  /* output footer */
717 915 markom 
  GEN ("\nendmodule\n");
718 879 markom 
 
719 
  fclose (fo);
720 
}
721 
 
722 915 markom 
void generate_main (int nfuncs, cuc_func **f, char *filename)
723 
{
724 
  FILE *fo;
725 
  int i, j, nrf, first;
726 
  char tmp[256];
727 
  int ncallees[MAX_FUNCS];
728 
  int maxncallees = 0;
729 
  sprintf (tmp, "%s.v", filename);
730 
 
731 
  for (i = 0, nrf = 0; i < nfuncs; i++) {
732 
    if (f[i]) f[i]->tmp = nrf++;
733 
    ncallees[i] = 0;
734 
  }
735 
  if (!nrf) return;
736 
 
737 
  for (i = 0; i < nfuncs; i++) if (f[i])
738 
    for (j = 0; j < f[i]->nfdeps; j++)
739 
      ncallees[f[i]->fdeps[j]->tmp]++;
740 
 
741 
  for (i = 0; i < nrf; i++)
742 
    if (maxncallees < ncallees[i]) maxncallees = ncallees[i];
743 
 
744 
  log ("Generating verilog file \"%s\"\n", tmp);
745 
  printf ("Generating verilog file \"%s\"\n", tmp);
746 
  if ((fo = fopen (tmp, "wt+")) == NULL) {
747 
    fprintf (stderr, "Cannot open '%s'\n", tmp);
748 
    exit (1);
749 
  }
750 
 
751 
  /* output header */
752 
  GEN ("/* %s -- generated by OpenRISC Custom Unit Compiler\n", tmp);
753 
  GEN ("   (C) 2002 OpenCores http://www.opencores.org/ */\n\n");
754 
  GEN ("/* Includes %i functions:", nrf);
755 
  for (i = 0; i < nfuncs; i++) if (f[i])
756 
    GEN ("\n%s", prof_func[i].name);
757 
  GEN (" */\n\n");
758 
 
759 
  GEN ("`include \"timescale.v\"\n\n");
760 
  GEN ("module %s (clk, rst,\n", filename);
761 
  GEN ("              /* Load and store master Wishbone ports */\n");
762 
  GEN ("              lwb_adr_o, lwb_dat_i, lwb_cycstb_o,\n");
763 
  GEN ("              lwb_sel_o, lwb_linbrst_o, lwb_ack_i,\n");
764 
  GEN ("              swb_adr_o, swb_dat_o, swb_cycstb_o,\n");
765 
  GEN ("              swb_sel_o, swb_linbrst_o, swb_ack_i,\n\n");
766 
  GEN ("              /* cuc interface */\n");
767 
  GEN ("              cuc_stb_i, cuc_adr_i, cuc_dat_i, cuc_dat_o, cuc_we_i, cuc_ack_o);\n\n");
768 
 
769 
  GEN ("parameter Tp = 1;\n");
770 
  GEN ("\n/* module ports */\n");
771 
  GEN ("input         clk, rst, cuc_stb_i, cuc_we_i;\n");
772 
  GEN ("input         lwb_ack_i, swb_ack_i, lwb_linbrst_o, swb_linbrst_o;\n");
773 
  GEN ("output        lwb_cycstb_o, lwb_linbrst_o;\n");
774 
  GEN ("output        swb_cycstb_o swb_linbrst_o;\n");
775 
  GEN ("output        cuc_ack_o;\n");
776 
  GEN ("output  [3:0] lwb_sel_o, swb_sel_o;\n");
777 
  GEN ("output [31:0] lwb_adr_o, swb_adr_o, swb_dat_o, cuc_dat_o;\n");
778 
  GEN ("input  [15:0] cuc_adr_i;\n");
779 
  GEN ("input  [31:0] lwb_dat_i, cuc_dat_i;\n\n");
780 924 markom 
 
781 
  GEN ("wire   [%2i:0] i_we, i_re, i_start, i_finish, i_selected, i_first_reg;\n", nrf - 1);
782 
  GEN ("wire   [%2i:0] i_bidok, main_start, main_end;\n", nrf - 1);
783 
  GEN ("reg    [%2i:0] i_go_bsy, main_start_r;\n", nrf - 1);
784 915 markom 
 
785 924 markom 
  GEN ("assign i_selected = {\n");
786 
  for (i = 0; i < nrf; i++)
787 
    GEN ("    cuc_adr_i[15:6] == %i%s\n", i, i < nrf - 1 ? "," : "};");
788 
 
789 
  GEN ("assign i_first_reg = {\n");
790 
  for (i = 0; i < nrf; i++) {
791 
    for (j = 0; j <= MAX_REGS; j++) if (f[i]->used_regs[j]) break;
792 
    GEN ("    cuc_adr_i[5:0] == %i%s\n", j, i < nrf - 1 ? "," : "};");
793 
  }
794 
 
795 
  GEN ("assign i_we = {%i{cuc_stb_i && cuc_we_i}} & i_selected;\n", nrf);
796 
  GEN ("assign i_re = {%i{cuc_stb_i && !cuc_we_i}} & i_selected;\n", nrf);
797 
 
798 
  GEN ("assign i_start = i_go_bsy & {%i{cuc_ack_o}};\n", nrf);
799 
  GEN ("assign i_start_bidok = {\n");
800 
  for (i = 0; i < nrf; i++)
801 
    GEN ("    i_start_bid[%i] < %i%s\n", i, i, i < nrf - 1 ? "," : "};");
802 
  GEN ("assign main_start = start_i & i_selected & i_first_reg & i_we;\n");
803 
  GEN ("assign main_end = {%i{end_i}} & i_selected;\n");
804 
 
805 
  GEN ("\nalways @(posedge clk or posedge rst)\n");
806 
  GEN ("begin\n");
807 
  GEN ("  if (rst) i_go_bsy <= #Tp %i'b0;\n", nrf);
808 
  GEN ("  else i_go_bsy <= #Tp i_we | ~i_finish & i_go_bsy;\n");
809 
  GEN ("end\n");
810 
 
811 915 markom 
  /* Function specific data */
812 
  for (i = 0; i < nfuncs; i++) if (f[i]) {
813 
    int ci = 0, co = 0;
814 
    int fn = f[i]->tmp;
815 
    GEN ("\n/* Registers for function %s */\n", prof_func[i].name);
816 
    for (j = 0, first = 1; j < MAX_REGS; j++) if (f[i]->used_regs[j]) {
817 924 markom 
      GEN ("%s i%i_r%ii", first ? "/* inputs */\nreg    [31:0]" : ",", fn, j);
818 915 markom 
      first = 0;
819 
      ci++;
820 
    }
821 
    if (ci) GEN (";\n");
822 
 
823 
    for (j = 0, first = 1; j < MAX_REGS; j++)
824 
      if (f[i]->lur[j] >= 0 && !f[i]->saved_regs[j]) {
825 924 markom 
        GEN ("%s i%i_r%io", first ? "/* outputs */\nreg    [31:0]" : ",", fn, j);
826 915 markom 
        first = 0;
827 
        co++;
828 
      }
829 
    if (co) GEN (";\n");
830 924 markom 
 
831 
    GEN ("always @(posedge clk or posedge rst)\n");
832 
    GEN ("  if (rst) main_start_r <= #Tp %i'b0;\n", nrf);
833 
    GEN ("  else main_start_r <= #Tp main_start & i_start_bidok | i_busy | ~i_end & main_start_r;\n");
834 915 markom 
 
835 
    if (ci) {
836 
      GEN ("\n/* write register access */\n");
837 
      GEN ("always @(posedge clk or posedge rst)\n");
838 
      GEN ("begin\n");
839 
      GEN ("  if (rst) begin\n");
840 
      for (j = 0; j < MAX_REGS; j++) if (f[i]->used_regs[j])
841 
        GEN ("    i%i_r%-2i <= #Tp 32'h0;\n", fn, j);
842 924 markom 
      GEN ("  end else if (!i_go_bsy[%i] && i_we[%i])\n", fn, fn);
843 915 markom 
      GEN ("    case (cuc_adr_i[5:0])\n");
844 
      for (j = 0; j < MAX_REGS; j++) if (f[i]->used_regs[j])
845 
        GEN ("      %-2i: r%i <= #Tp cuc_dat_i;\n", j, j);
846 
      GEN ("    endcase\n");
847 
      GEN ("end\n");
848 
    }
849 
 
850 924 markom 
    GEN ("\n");
851 915 markom 
  }
852 
 
853 924 markom 
  /* Generate machine for reading all function registers. Register read can be
854 
     delayed till function completion */
855 915 markom 
  {
856 
    int co;
857 
    GEN ("/* read register access - data */\n");
858 
    GEN ("always @(posedge clk or posedge rst)\n");
859 
    GEN ("  if (rst) cuc_dat_o <= #Tp 32'h0;\n");
860 
    GEN ("  else if (cuc_stb_i && cuc_we_i) begin\n");
861 
    GEN ("    ");
862 
 
863 
    for (i = 0; i < nfuncs; i++) if (f[i]) {
864 
      co = 0;
865 
      for (j = 0; j < MAX_REGS; j++)
866 
        if (f[i]->lur[j] >= 0 && !f[i]->saved_regs[j]) co++;
867 
 
868 924 markom 
      GEN ("if (cuc_addr_i[15:6] == %i)", f[i]->tmp);
869 915 markom 
      if (co) {
870 
        first = 1;
871 924 markom 
        GEN ("\n      case (cuc_adr_i[5:0])\n");
872 915 markom 
        for (j = 0; j < MAX_REGS; j++)
873 
          if (f[i]->lur[j] >= 0 && !f[i]->saved_regs[j])
874 
            GEN ("      %-2i: cuc_dat_o <= #Tp i%i_r%i;\n", j, f[i]->tmp, j);
875 
        GEN ("      endcase\n");
876 
      } else {
877 
        GEN ("      cuc_dat_o <= #Tp 32'hx;\n");
878 
      }
879 924 markom 
      GEN ("    else ");
880 915 markom 
    }
881 
    GEN ("cuc_dat_o <= #Tp 32'hx;\n");
882 
    GEN ("  else cuc_dat_o <= #Tp 32'hx;\n");
883 
    GEN ("end\n");
884 
 
885 
    GEN ("\n/* read register access - acknowledge */\n");
886 
    GEN ("always @(cuc_stb_i or cuc_we_i or cuc_adr_i");
887 
    for (i = 0; i < nrf; i++) GEN (" or main_end%i", i);
888 
    GEN (")\n");
889 924 markom 
    GEN ("  if (cuc_stb_i && cuc_we_i) cuc_ack_o <= #Tp |(i_selected & main_end)\n");
890 915 markom 
    GEN ("  else cuc_ack_o <= #Tp 1'b0;\n");
891 
    GEN ("end\n");
892 
  }
893 
 
894 
  for (j = 0; j < 2; j++) {
895 
    char t = j ? 's' : 'l';
896 
    GEN ("\n/* %s Wishbone bridge */\n", j ? "store" : "load");
897 924 markom 
    GEN ("reg [%i:0] %cm_sel;\n", log2 (nrf), t);
898 
    GEN ("reg [%i:0] %cm_bid;\n", log2 (nrf), t);
899 915 markom 
 
900 
    GEN ("\n/* highest bid */\n");
901 
    GEN ("always @(");
902 
    for (i = 0; i < nrf; i++) GEN ("%si%i_%cwb_cycstb", i > 0 ? " or " : "", i, t);
903 
    GEN (")\n");
904 
    for (i = 0; i < nrf; i++) GEN ("  %sif (i%i_%cwb_cycstb) %cm_bid <= %i'h%x;\n",
905 
                    i ? "else " : "", i, t, t, log2 (nrf) + 1, i);
906 
 
907 
    GEN ("\n/* selected transfer */\n");
908 
    GEN ("always @(posedge clk or posedge rst)\n");
909 
    GEN ("  if (rst) %cm_sel <= #Tp %cm_sel <= #Tp %i'h0;\n", t, t, log2 (nrf) + 1);
910 
    GEN ("  else if (%cwb_ack_i) %cm_sel <= #Tp %i'h0;\n", t, t, log2 (nrf) + 1);
911 
    GEN ("  else if (!%ccyc_ip) %cm_sel <= #Tp %cm_bid;\n", t, t, t);
912 
 
913 
    GEN ("\n/* Cycle */\n");
914 
    GEN ("assign %cwb_cyc_o = (lwb_cycstb | swb_cycstb);\n", t);
915 
    GEN ("assign %cwb_stb_o = %cwb_stb_o;\n", t, t);
916 
    GEN ("\nalways @(posedge clk or posedge rst)\n");
917 
    GEN ("  if (rst) %ccyc_ip <= #Tp 1'b0;\n", t);
918 
    GEN ("  else if (%cwb_ack_i) %ccyc_ip <= #Tp 1'b0;\n", t, t);
919 
    GEN ("  else %ccyc_ip <= #Tp %cwb_cyc_o;\n", t, t);
920 
  }
921 
 
922 
  GEN ("\n/* Acknowledge */\n");
923 
  for (i = 0; i < nrf; i++)
924 
    GEN ("assign i%i_swb_ack = ((sm_bid == %i & !scyc_ip) | sm_sel == %i) & swb_ack_i;\n", i, i, i);
925 
 
926 
  GEN ("\n/* Data */\n");
927 
  for (i = 0; i < nrf; i++) GEN ("wire [31:0] i%i_swb_dat;\n", i);
928 
  GEN ("\nassign swb_dat_o = ");
929 
  for (i = 0; i < nrf - 1; i++)
930 
    GEN ("\n  sm_bid == %i ? i%i_swb_dat : ", i, i);
931 
  GEN ("i%i_swb_dat;\n\n", nrf - 1);
932 
 
933 
  for (i = 0; i < nrf; i++) GEN ("wire [31:0] i%i_lwb_dat = lwb_dat_i;\n", i);
934 
 
935 
  GEN ("\n/* selects */\n");
936 
  for (i = 0; i < nrf; i++) GEN ("wire [3:0]  i%i_swb_sel, i%i_lwb_sel;\n", i, i);
937 
  GEN ("\nassign swb_sel_o = ");
938 
  for (i = 0; i < nrf - 1; i++)
939 
    GEN ("\n  sm_bid == %i ? i%i_swb_sel : ", i, i);
940 
  GEN ("i%i_swb_sel;\n", nrf - 1);
941 
  GEN ("\nassign lwb_sel_o = ");
942 
  for (i = 0; i < nrf - 1; i++)
943 
    GEN ("\n  lm_bid == %i ? i%i_lwb_sel : ", i, i);
944 
  GEN ("i%i_lwb_sel;\n", nrf - 1);
945 
 
946 
  GEN ("\n/* write enable */\n");
947 
  for (i = 0; i < nrf; i++) GEN ("wire i%i_swb_we, i%i_lwb_we;\n", i, i);
948 
  GEN ("\nassign swb_we_o = ");
949 
  for (i = 0; i < nrf - 1; i++) GEN ("\n  sm_bid == %i ? i%i_swb_we : ", i, i);
950 
  GEN ("i%i_swb_we;\n", nrf - 1);
951 
 
952 
  GEN ("\nassign lwb_we_o = ");
953 
  for (i = 0; i < nrf - 1; i++) GEN ("\n  lm_bid == %i ? i%i_lwb_we : ", i, i);
954 
  GEN ("i%i_lwb_we;\n", nrf - 1);
955 
 
956 
  GEN ("\n/* burst enable */\n");
957 
  for (i = 0; i < nrf; i++) GEN ("wire i%i_swb_linbrst, i%i_lwb_linbrst;\n", i, i);
958 
  GEN ("\nassign swb_linbrst_o = ");
959 
  for (i = 0; i < nrf - 1; i++) GEN ("\n  sm_bid == %i ? i%i_swb_linbrst : ", i, i);
960 
  GEN ("i%i_swb_linbrst;\n", nrf - 1);
961 
  GEN ("\n\nassign lwb_linbrst_o = ");
962 
  for (i = 0; i < nrf - 1; i++) GEN ("\n  lm_bid == %i ? i%i_lwb_linbrst : ", i, i);
963 
  GEN ("i%i_lwb_linbrst;\n", nrf - 1);
964 
 
965 
  /* start/end signals */
966 
  GEN ("\n\n/* start/end signals */\n");
967 
 
968 924 markom 
  for (i = 0; i < nrf; i++) {
969 
    if (log2 (maxncallees + 1))
970 
      GEN ("wire [%i:0] i%i_current = i%i_busy ? i%i_current_r : i%i_start_bid;\n",
971 
        log2 (maxncallees + 1), i, i, i, i, i);
972 
    else GEN ("wire i%i_current = 0;\n", i);
973 
  }
974 
  GEN ("\n");
975 
 
976 915 markom 
  for (i = 0, first = 1; i < nrf; i++) {
977 924 markom 
    GEN ("%si%i_current == %i && i_end[%i]", first ? "assign end_o = " : "\n  || ", i, ncallees[i], i);
978 915 markom 
    first = 0;
979 
  }
980 
  GEN (";\n\n");
981 
 
982 
  for (i = 0, j = 0; i < nfuncs; i++) if (f[i]) {
983 
    if (log2 (ncallees[i])) {
984 
      GEN ("reg [%i:0] i%i_start_bid;\n", log2 (ncallees[i]), j);
985 
      GEN ("always @(start%i", f[i]->tmp);
986 
      for (j = 0, first = 1; j < f[i]->nfdeps; j++)
987 
        if (f[i]->fdeps[j]) GEN (", ");
988 
      GEN (")\n");
989 
      GEN ("begin !!!\n"); //TODO
990 
      GEN ("  \n");
991 
      GEN ("end\n");
992 
    }
993 924 markom 
    GEN ("wire i%i_start = main_start[%i];\n", j, j);
994 915 markom 
    j++;
995 
  }
996 
  GEN ("\n");
997 
 
998 
  for (i = 0; i < nfuncs; i++) if (f[i]) {
999 
    int nf = f[i]->tmp;
1000 
    GEN ("\n%s i%i(.clk(clk), .rst(rst),\n", prof_func[i].name, nf);
1001 
    GEN ("");
1002 
    GEN ("  .lwb_adr_o(i%i_lwb_adr), .lwb_dat_i(i%i_lwb_dat), .lwb_cycstb_o(i%i_lwb_cycstb),\n",
1003 
                    nf, nf, nf);
1004 
    GEN ("  .lwb_sel_o(i%i_lwb_sel), .lwb_linbrst_o(i%i_lwb_linbrst), .lwb_ack_i(i%i_lwb_ack),\n",
1005 
                    nf, nf, nf);
1006 
    GEN ("  .swb_adr_o(i%i_swb_adr), .swb_dat_o(i%i_swb_dat), .swb_cycstb_o(i%i_swb_cycstb),\n",
1007 
                    nf, nf, nf);
1008 
    GEN ("  .swb_sel_o(i%i_swb_sel), .swb_linbrst_o(i%i_swb_linbrst), .swb_ack_i(i%i_swb_ack),\n",
1009 
                    nf, nf, nf);
1010 
    GEN ("  ");
1011 924 markom 
    for (j = 0, first = 1; j < MAX_REGS; j++) if (f[i]->used_regs[j])
1012 
      GEN (".r%i_i(i_r%ii[%i]), ", j, j, nf), first = 0;
1013 915 markom 
 
1014 924 markom 
    if (first) GEN ("\n  ");
1015 915 markom 
    for (j = 0, first = 1; j < MAX_REGS; j++)
1016 
      if (f[i]->lur[j] >= 0 && !f[i]->saved_regs[j])
1017 924 markom 
        GEN (".r%i_o(i_r%io[%i]), ", j, j, nf), first = 0;
1018 
    if (first) GEN ("\n  ");
1019 
    if (f[i]->nfdeps) {
1020 
      GEN (".fstart_o(i_fstart[%i]), .fend_i(i_fend[%i]), .fid_o(i%i_fid),\n", i, i, i),
1021 
      GEN ("  .fr3_o(i%i_fr3), .fr4_o(i%i_fr4), .fr5_o(i%i_fr5), .fr6_o(i%i_fr6),\n");
1022 
      GEN ("  .fr7_o(i%i_fr7), .fr8_o(i%i_fr8), .fr11_i(i%i_fr11i),\n  ");
1023 
    }
1024 
    GEN (".start_i(i_start[%i]), .end_o(i_end[%i]), .busy_o(i_busy[%i]));\n", nf, nf, nf);
1025 915 markom 
  }
1026 
 
1027 
  /* output footer */
1028 
  GEN ("\nendmodule\n");
1029 
 
1030 
  fclose (fo);
1031 
}
1032 
 

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