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[/] [or1k/] [tags/] [stable_0_2_0_rc2/] [or1ksim/] [cuc/] [verilog.c] - Blame information for rev 915

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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;
95 906 markom 
    case OPT_CONST: if (f->INSN(ref).type & IT_COND) {
96 
                      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 
    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 
  }
459 915 markom 
  GEN ("wire   busy_o = |bb_stb\n");
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");
469 879 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 
    if (f->bb[b].prev[0] < 0) GEN ("start_i");
475 879 markom 
    else {
476 
      cuc_bb *prev = &f->bb[f->bb[b].prev[0]];
477 
      int t;
478 
      if (prev->mdep) {
479 
        print_deps (fo, f, f->bb[b].prev[0], prev->mdep, 0);
480 915 markom 
        GEN (" && ");
481 879 markom 
      }
482 915 markom 
      GEN ("bb_stb[%i]", f->bb[b].prev[0]);
483 879 markom 
      if (prev->next[0] >= 0 && prev->next[1] >= 0) {
484 
        int bidx = branch_index (&f->bb[f->bb[b].prev[0]]);
485 
        assert (bidx >= 0);
486 915 markom 
        GEN (" && ");
487 879 markom 
        t = prev->next[0] == b;
488 915 markom 
        GEN ("%st%x_%x", t ? "" : "!", f->bb[b].prev[0], bidx);
489 879 markom 
      }
490 
      if (f->bb[b].prev[1] >= 0) {
491 
        prev = &f->bb[f->bb[b].prev[1]];
492 915 markom 
        GEN ("\n                    || ");
493 879 markom 
        if (prev->mdep) {
494 
          print_deps (fo, f, f->bb[b].prev[1], prev->mdep, 0);
495 915 markom 
          GEN (" && ");
496 879 markom 
        }
497 915 markom 
        GEN ("bb_stb[%i]", f->bb[b].prev[1]);
498 879 markom 
        if (prev->next[0] >= 0 && prev->next[1] >= 0) {
499 
          int bidx = branch_index (&f->bb[f->bb[b].prev[1]]);
500 
          assert (bidx >= 0);
501 915 markom 
          GEN (" && ");
502 879 markom 
          t = prev->next[0] == b;
503 915 markom 
          GEN ("%st%x_%x", t ? "" : "!", f->bb[b].prev[1], bidx);
504 879 markom 
        }
505 
      }
506 
    }
507 915 markom 
    if (b == 0) GEN ("};\n");
508 
    else GEN (",\n");
509 879 markom 
  }
510 
 
511 915 markom 
  GEN ("\n/* Register the bb_start */\n");
512 
  GEN ("reg   [%2i:0] bb_start_r;\n\n", f->num_bb - 1);
513 
  GEN ("always @(posedge rst or posedge clk)\n");
514 
  GEN ("begin\n");
515 
  GEN ("  if (rst) bb_start_r <= #Tp %i'b0;\n", f->num_bb);
516 
  GEN ("  else if (end_o) bb_start_r <= #Tp %i'b0;\n", f->num_bb);
517 
  GEN ("  else bb_start_r <= #Tp bb_start;\n");
518 
  GEN ("end\n");
519 879 markom 
 
520 915 markom 
  GEN ("\n/* Logic */\n");
521 879 markom 
  /* output body */
522 
  for (b = 0; b < f->num_bb; b++) {
523 915 markom 
    GEN ("\t\t/* BB%i */\n", b);
524 879 markom 
    for (i = 0; i < f->bb[b].ninsn; i++)
525 
      print_insn_v (fo, f, b, i);
526 915 markom 
    GEN ("\n");
527 879 markom 
  }
528 
 
529 
  if (co) {
530 915 markom 
    GEN ("\n/* Outputs */\n");
531 879 markom 
    for (i = 0; i < MAX_REGS; i++)
532 883 markom 
      if (f->lur[i] >= 0 && !f->saved_regs[i])
533 915 markom 
        GEN ("assign r%i_o = t%x_%x;\n", i, REF_BB(f->lur[i]),
534 883 markom 
                        REF_I(f->lur[i]));
535 879 markom 
  }
536 
 
537 
  if (nstores) {
538 
    int cur_store = 0;
539 915 markom 
    GEN ("\n/* Memory stores */\n");
540 
    GEN ("always @(posedge clk or posedge rst)\nbegin\n");
541 
    GEN ("  if (rst) swb_dat_o <= #Tp 32'h0;\n");
542 879 markom 
    for (i = 0; i < f->nmsched; i++)
543 907 markom 
      if (f->mtype[i] & MT_STORE) {
544 879 markom 
        char t[30];
545 915 markom 
        GEN ("  else if (s_stb[%i]) swb_dat_o <= #Tp %s;\n", cur_store++,
546 879 markom 
                        print_op_v (f, t, f->msched[i], 0));
547 
        //printf ("msched[%i] = %x (mtype %x) %x\n", i, f->msched[i], f->mtype[i], f->INSN(f->msched[i]).op[0]);
548 
      }
549 915 markom 
    GEN ("end\n");
550 879 markom 
  }
551 
 
552 
  if (nloads) {
553 
    int cur_load = 0;
554 915 markom 
    GEN ("\n/* Load state machine */\n");
555 
    GEN ("always @(posedge clk or posedge rst)\n");
556 
    GEN ("begin\n");
557 
    GEN ("  if (rst) begin\n");
558 
    GEN ("    l_stb <= #Tp %i'h0;\n", nloads);
559 
    GEN ("    lwb_cycstb_o <= #Tp 1'b0;\n");
560 
    GEN ("    lwb_sel_o[3:0] <= #Tp 4'b0000;\n");
561 
    GEN ("    lwb_linbrst_o <= #Tp 1'b0;\n");
562 
    GEN ("    lwb_adr_o <= #Tp 32'h0;\n");
563 
    GEN ("  end else begin\n");
564 883 markom 
    cucdebug (1, "loads \n");
565 907 markom 
    for (i = 0; i < f->nmsched; i++) if (f->mtype[i] & MT_LOAD) {
566 879 markom 
      char t[30];
567 
      dep_list *dep = f->INSN(f->msched[i]).dep;
568 883 markom 
      cucdebug (1, "msched[%i] = %x (mtype %x)\n", i, f->msched[i], f->mtype[i]);
569 879 markom 
      assert (f->INSN(f->msched[i]).opt[1] & (OPT_REF | OPT_REGISTER));
570 915 markom 
      GEN ("    if (");
571 879 markom 
      print_deps (fo, f, REF_BB(f->msched[i]), f->INSN(f->msched[i]).dep, 1);
572 915 markom 
      GEN (") begin\n");
573 907 markom 
      print_turn_off_dep (fo, f, dep);
574 915 markom 
      GEN ("      l_stb[%i] <= #Tp 1'b1;\n", cur_load++);
575 
      GEN ("      lwb_cycstb_o <= #Tp 1'b1;\n");
576 
      GEN ("      lwb_sel_o[3:0] <= #Tp 4'b");
577 879 markom 
      switch (f->mtype[i] & MT_WIDTH) {
578 915 markom 
        case 1: GEN ("0001 << (%s & 32'h3);\n",
579 879 markom 
                                print_op_v (f, t, f->msched[i], 1)); break;
580 915 markom 
        case 2: GEN ("0011 << ((%s & 32'h1) << 1);\n",
581 879 markom 
                                print_op_v (f, t, f->msched[i], 1)); break;
582 915 markom 
        case 4: GEN ("1111;\n"); break;
583 879 markom 
        default: assert (0);
584 
      }
585 915 markom 
      GEN ("      lwb_linbrst_o <= #Tp 1'b%i;\n",
586 879 markom 
                      (f->mtype[i] & MT_BURST) && !(f->mtype[i] & MT_BURSTE) ? 1 : 0);
587 915 markom 
      GEN ("      lwb_adr_o <= #Tp t%x_%x & ~32'h3;\n",
588 879 markom 
                      REF_BB(f->INSN(f->msched[i]).op[1]), REF_I(f->INSN(f->msched[i]).op[1]));
589 915 markom 
      GEN ("    end\n");
590 879 markom 
    }
591 915 markom 
    GEN ("    if (l_end[%i]) begin\n", nloads - 1);
592 
    GEN ("      l_stb <= #Tp %i'h0;\n", nloads);
593 
    GEN ("      lwb_cycstb_o <= #Tp 1'b0;\n");
594 
    GEN ("      lwb_sel_o[3:0] <= #Tp 4'b0000;\n");
595 
    GEN ("      lwb_linbrst_o <= #Tp 1'b0;\n");
596 
    GEN ("      lwb_adr_o <= #Tp 32'h0;\n");
597 
    GEN ("    end\n");
598 
    GEN ("  end\n");
599 
    GEN ("end\n");
600 879 markom 
  }
601 
 
602 
  if (nstores) {
603 
    int cur_store = 0;
604 915 markom 
    GEN ("\n/* Store state machine */\n");
605 
    GEN ("always @(posedge clk or posedge rst)\n");
606 
    GEN ("begin\n");
607 
    GEN ("  if (rst) begin\n");
608 
    GEN ("    s_stb <= #Tp %i'h0;\n", nstores);
609 
    GEN ("    swb_cycstb_o <= #Tp 1'b0;\n");
610 
    GEN ("    swb_sel_o[3:0] <= #Tp 4'b0000;\n");
611 
    GEN ("    swb_linbrst_o <= #Tp 1'b0;\n");
612 
    GEN ("    swb_adr_o <= #Tp 32'h0;\n");
613 
    GEN ("  end else begin\n");
614 883 markom 
    cucdebug (1, "stores \n");
615 907 markom 
    for (i = 0; i < f->nmsched; i++) if (f->mtype[i] & MT_STORE) {
616 879 markom 
      char t[30];
617 
      dep_list *dep = f->INSN(f->msched[i]).dep;
618 883 markom 
      cucdebug (1, "msched[%i] = %x (mtype %x)\n", i, f->msched[i], f->mtype[i]);
619 879 markom 
      assert (f->INSN(f->msched[i]).opt[1] & (OPT_REF | OPT_REGISTER));
620 915 markom 
      GEN ("    if (");
621 879 markom 
      print_deps (fo, f, REF_BB(f->msched[i]), f->INSN(f->msched[i]).dep, 1);
622 915 markom 
      GEN (") begin\n");
623 907 markom 
      print_turn_off_dep (fo, f, dep);
624 915 markom 
      GEN ("      s_stb[%i] <= #Tp 1'b1;\n", cur_store++);
625 
      GEN ("      swb_cycstb_o <= #Tp 1'b1;\n");
626 
      GEN ("      swb_sel_o[3:0] <= #Tp 4'b");
627 879 markom 
      switch (f->mtype[i] & MT_WIDTH) {
628 915 markom 
        case 1: GEN ("0001 << (%s & 32'h3);\n",
629 879 markom 
                                print_op_v (f, t, f->msched[i], 1)); break;
630 915 markom 
        case 2: GEN ("0011 << ((%s & 32'h1) << 1);\n",
631 879 markom 
                                print_op_v (f, t, f->msched[i], 1)); break;
632 915 markom 
        case 4: GEN ("1111;\n"); break;
633 879 markom 
        default: assert (0);
634 
      }
635 915 markom 
      GEN ("      swb_linbrst_o <= #Tp 1'b%i;\n",
636 879 markom 
                      (f->mtype[i] & MT_BURST) && !(f->mtype[i] & MT_BURSTE) ? 1 : 0);
637 915 markom 
      GEN ("      swb_adr_o <= #Tp t%x_%x & ~32'h3;\n",
638 879 markom 
                      REF_BB(f->INSN(f->msched[i]).op[1]), REF_I(f->INSN(f->msched[i]).op[1]));
639 915 markom 
      GEN ("    end\n");
640 879 markom 
    }
641 915 markom 
    GEN ("    if (s_end[%i]) begin\n", nstores - 1);
642 
    GEN ("      s_stb <= #Tp %i'h0;\n", nstores);
643 
    GEN ("      swb_cycstb_o <= #Tp 1'b0;\n");
644 
    GEN ("      swb_sel_o[3:0] <= #Tp 4'b0000;\n");
645 
    GEN ("      swb_linbrst_o <= #Tp 1'b0;\n");
646 
    GEN ("      swb_adr_o <= #Tp 32'h0;\n");
647 
    GEN ("    end\n");
648 
    GEN ("  end\n");
649 
    GEN ("end\n");
650 879 markom 
  }
651 
 
652 907 markom 
  if (ncalls) {
653 
    int cur_call = 0;
654 915 markom 
    GEN ("\n/* Function calls state machine */\n");
655 
    GEN ("always @(posedge clk or posedge rst)\n");
656 
    GEN ("begin\n");
657 
    GEN ("  if (rst) begin\n");
658 
    GEN ("    f_stb <= #Tp %i'h0;\n", nstores);
659 
    for (i = 0; i < 6; i++) GEN ("    fr%i_o <= #Tp 32'h0;\n", i + 3);
660 
    if (log2(ncalls)) GEN ("    fid_o <= #Tp %i'h0;\n", log2 (f->nfdeps));
661 
    GEN ("    fstart_o <= #Tp 1'b0;\n");
662 
    //GEN ("    f11_r <= #Tp 32'h0;\n");
663 
    GEN ("  end else begin\n");
664 907 markom 
    cucdebug (1, "calls \n");
665 
    for (i = 0; i < f->nmsched; i++) if (f->mtype[i] & MT_CALL) {
666 
      char t[30];
667 
      dep_list *dep = f->INSN(f->msched[i]).dep;
668 
      cucdebug (1, "msched[%i] = %x (mtype %x)\n", i, f->msched[i], f->mtype[i]);
669 
      assert (f->INSN(f->msched[i]).opt[1] & (OPT_REF | OPT_REGISTER));
670 915 markom 
      GEN ("    if (");
671 907 markom 
      print_deps (fo, f, REF_BB(f->msched[i]), f->INSN(f->msched[i]).dep, 1);
672 915 markom 
      GEN (") begin\n");
673 907 markom 
      print_turn_off_dep (fo, f, dep);
674 915 markom 
      GEN ("      f_stb[%i] <= #Tp 1'b1;\n", cur_call++);
675 
      GEN ("      fstart_o <= #Tp 1'b1;\n");
676 907 markom 
      if (log2 (f->nfdeps))
677 915 markom 
        GEN ("      fid_o <= #Tp %i'h%x;\n", log2 (f->nfdeps), func_index (f, f->msched[i]));
678 907 markom 
 
679 
      for (j = 0; j < 6; j++)
680 915 markom 
        GEN ("      fr%i_o <= #Tp t%x_%x;\n", j + 3,
681 907 markom 
                       REF_BB (f->msched[i]), REF_I (f->msched[i]) - 6 + i);
682 915 markom 
      GEN ("    end\n");
683 907 markom 
    }
684 915 markom 
    GEN ("    if (f_end[%i]) begin\n", ncalls - 1);
685 
    GEN ("      f_stb <= #Tp %i'h0;\n", ncalls);
686 
    GEN ("      f_start_o <= #Tp 1'b0;\n");
687 
    GEN ("    end\n");
688 
    GEN ("  end\n");
689 
    GEN ("end\n");
690 907 markom 
  }
691 
 
692 915 markom 
  GEN ("\n/* Basic blocks state machine */\n");
693 
  GEN ("always @(posedge clk or posedge rst)\n");
694 
  GEN ("begin\n");
695 
  GEN ("  if (rst) bb_stb <= #Tp %i'h%x;\n", f->num_bb, 0);
696 
  GEN ("  else if (end_o) bb_stb <= #Tp %i'h%x;\n", f->num_bb, 0);
697 879 markom 
  for (i = 0; i < f->num_bb; i++) {
698 915 markom 
    GEN ("  else if (bb_start[%i]) begin\n", i);
699 
    GEN ("    bb_stb <= #Tp %i'h%x;\n", f->num_bb, 1 << i);
700 879 markom 
  }
701 915 markom 
  GEN ("  end else if (end_o) begin\n");
702 
  GEN ("    bb_stb <= #Tp %i'h%x;\n", f->num_bb, 0);
703 
  GEN ("  end\n");
704 
  GEN ("end\n");
705 879 markom 
 
706 
  /* output footer */
707 915 markom 
  GEN ("\nendmodule\n");
708 879 markom 
 
709 
  fclose (fo);
710 
}
711 
 
712 915 markom 
void generate_main (int nfuncs, cuc_func **f, char *filename)
713 
{
714 
  FILE *fo;
715 
  int i, j, nrf, first;
716 
  char tmp[256];
717 
  int ncallees[MAX_FUNCS];
718 
  int maxncallees = 0;
719 
  sprintf (tmp, "%s.v", filename);
720 
 
721 
  for (i = 0, nrf = 0; i < nfuncs; i++) {
722 
    if (f[i]) f[i]->tmp = nrf++;
723 
    ncallees[i] = 0;
724 
  }
725 
  if (!nrf) return;
726 
 
727 
  for (i = 0; i < nfuncs; i++) if (f[i])
728 
    for (j = 0; j < f[i]->nfdeps; j++)
729 
      ncallees[f[i]->fdeps[j]->tmp]++;
730 
 
731 
  for (i = 0; i < nrf; i++)
732 
    if (maxncallees < ncallees[i]) maxncallees = ncallees[i];
733 
 
734 
  log ("Generating verilog file \"%s\"\n", tmp);
735 
  printf ("Generating verilog file \"%s\"\n", tmp);
736 
  if ((fo = fopen (tmp, "wt+")) == NULL) {
737 
    fprintf (stderr, "Cannot open '%s'\n", tmp);
738 
    exit (1);
739 
  }
740 
 
741 
  /* output header */
742 
  GEN ("/* %s -- generated by OpenRISC Custom Unit Compiler\n", tmp);
743 
  GEN ("   (C) 2002 OpenCores http://www.opencores.org/ */\n\n");
744 
  GEN ("/* Includes %i functions:", nrf);
745 
  for (i = 0; i < nfuncs; i++) if (f[i])
746 
    GEN ("\n%s", prof_func[i].name);
747 
  GEN (" */\n\n");
748 
 
749 
  GEN ("`include \"timescale.v\"\n\n");
750 
  GEN ("module %s (clk, rst,\n", filename);
751 
  GEN ("              /* Load and store master Wishbone ports */\n");
752 
  GEN ("              lwb_adr_o, lwb_dat_i, lwb_cycstb_o,\n");
753 
  GEN ("              lwb_sel_o, lwb_linbrst_o, lwb_ack_i,\n");
754 
  GEN ("              swb_adr_o, swb_dat_o, swb_cycstb_o,\n");
755 
  GEN ("              swb_sel_o, swb_linbrst_o, swb_ack_i,\n\n");
756 
  GEN ("              /* cuc interface */\n");
757 
  GEN ("              cuc_stb_i, cuc_adr_i, cuc_dat_i, cuc_dat_o, cuc_we_i, cuc_ack_o);\n\n");
758 
 
759 
  GEN ("parameter Tp = 1;\n");
760 
  GEN ("\n/* module ports */\n");
761 
  GEN ("input         clk, rst, cuc_stb_i, cuc_we_i;\n");
762 
  GEN ("input         lwb_ack_i, swb_ack_i, lwb_linbrst_o, swb_linbrst_o;\n");
763 
  GEN ("output        lwb_cycstb_o, lwb_linbrst_o;\n");
764 
  GEN ("output        swb_cycstb_o swb_linbrst_o;\n");
765 
  GEN ("output        cuc_ack_o;\n");
766 
  GEN ("output  [3:0] lwb_sel_o, swb_sel_o;\n");
767 
  GEN ("output [31:0] lwb_adr_o, swb_adr_o, swb_dat_o, cuc_dat_o;\n");
768 
  GEN ("input  [15:0] cuc_adr_i;\n");
769 
  GEN ("input  [31:0] lwb_dat_i, cuc_dat_i;\n\n");
770 
 
771 
  /* Function specific data */
772 
  for (i = 0; i < nfuncs; i++) if (f[i]) {
773 
    int ci = 0, co = 0;
774 
    int fn = f[i]->tmp;
775 
    GEN ("\n/* Registers for function %s */\n", prof_func[i].name);
776 
    GEN ("wire          i%i_we = cuc_stb_i && cuc_we_i && cuc_adr_i[15:6] == %i;\n", fn, fn);
777 
    GEN ("wire          i%i_re = cuc_stb_i && !cuc_we_i && cuc_adr_i[15:6] == %i;\n", fn, fn);
778 
    GEN ("wire          i%i_start, i%i_finish;\n\n", fn, fn);
779 
 
780 
    GEN ("assign        i%i_start = i%i_go_bsy & cuc_ack_o;\n", fn, fn);
781 
    GEN ("wire          main_start%i = start_i && cuc_adr_i[15:6] == %i && cuc_adr_i[5:0] == %i && i%i_we;\n",
782 
                    i, i, j, i);
783 
    GEN ("wire          main_end%i = end_i && cuc_adr_i[15:6] == %i && cuc_adr_i[5:0] == %i && i%i_we;\n",
784 
                    i, i, j, i);
785 
 
786 
    GEN ("\nalways @(posedge clk or posedge rst)\n");
787 
    GEN (" begin\n");
788 
    GEN ("   if (rst) cuc_ack_o <= #Tp 1'b0;\n");
789 
    GEN ("   else if ((i%i_we | i%i_re) & !i%i_go_bsy)\n", fn, fn, fn);
790 
    GEN ("   cuc_ack_o <= #Tp ~cuc_ack_o;\n");
791 
    GEN (" end\n");
792 
 
793 
    GEN ("\nalways @(posedge clk or posedge rst)\n");
794 
    GEN ("begin\n");
795 
    GEN ("  if (rst) i%i_go_bsy <= #Tp 1'b0;\n", fn);
796 
    GEN ("  else if (i%i_we && (cuc_adr_i[15:6] == %i)) i%i_go_bsy <= #Tp 1'b1;\n", fn, fn, fn);
797 
    GEN ("  else if (i%i_finish) i%i_go_bsy <= #Tp 1'b0;\n", fn, fn);
798 
    GEN ("end\n");
799 
 
800 
    for (j = 0, first = 1; j < MAX_REGS; j++) if (f[i]->used_regs[j]) {
801 
      GEN ("%s i%i_r%ii", first ? "\n/* inputs */\nreg    [31:0]" : ",", fn, j);
802 
      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 
        GEN ("%s i%i_r%io", first ? "\n/* outputs */\nreg    [31:0]" : ",", fn, j);
810 
        first = 0;
811 
        co++;
812 
      }
813 
    if (co) GEN (";\n");
814 
 
815 
    //GEN ("wire   [31:0] i%i_r11;\n\n");
816 
 
817 
    if (ci) {
818 
      GEN ("\n/* write register access */\n");
819 
      GEN ("always @(posedge clk or posedge rst)\n");
820 
      GEN ("begin\n");
821 
      GEN ("  if (rst) begin\n");
822 
      for (j = 0; j < MAX_REGS; j++) if (f[i]->used_regs[j])
823 
        GEN ("    i%i_r%-2i <= #Tp 32'h0;\n", fn, j);
824 
      GEN ("  end else if (!i%i_go_bsy && i%i_we)\n", fn, fn);
825 
      GEN ("    case (cuc_adr_i[5:0])\n");
826 
      for (j = 0; j < MAX_REGS; j++) if (f[i]->used_regs[j])
827 
        GEN ("      %-2i: r%i <= #Tp cuc_dat_i;\n", j, j);
828 
      GEN ("    endcase\n");
829 
      GEN ("end\n");
830 
    }
831 
 
832 
    GEN ("\n\n");
833 
  }
834 
 
835 
  /* Generate machine for reading all function registers. First registers can delay
836 
     transfer till function completion */
837 
  {
838 
    int co;
839 
    GEN ("/* read register access - data */\n");
840 
    GEN ("always @(posedge clk or posedge rst)\n");
841 
    GEN ("  if (rst) cuc_dat_o <= #Tp 32'h0;\n");
842 
    GEN ("  else if (cuc_stb_i && cuc_we_i) begin\n");
843 
    GEN ("    ");
844 
 
845 
    for (i = 0; i < nfuncs; i++) if (f[i]) {
846 
      co = 0;
847 
      for (j = 0; j < MAX_REGS; j++)
848 
        if (f[i]->lur[j] >= 0 && !f[i]->saved_regs[j]) co++;
849 
 
850 
      GEN ("if (cuc_addr_i[15:6] == %i) begin\n", f[i]->tmp);
851 
      if (co) {
852 
        first = 1;
853 
        GEN ("      case (cuc_adr_i[5:0])\n");
854 
        for (j = 0; j < MAX_REGS; j++)
855 
          if (f[i]->lur[j] >= 0 && !f[i]->saved_regs[j])
856 
            GEN ("      %-2i: cuc_dat_o <= #Tp i%i_r%i;\n", j, f[i]->tmp, j);
857 
        GEN ("      endcase\n");
858 
      } else {
859 
        /* no registers => just write an acknowledge */
860 
        GEN ("      cuc_dat_o <= #Tp 32'hx;\n");
861 
      }
862 
      GEN ("    end else ");
863 
    }
864 
    GEN ("cuc_dat_o <= #Tp 32'hx;\n");
865 
    GEN ("  else cuc_dat_o <= #Tp 32'hx;\n");
866 
    GEN ("end\n");
867 
 
868 
    GEN ("\n/* read register access - acknowledge */\n");
869 
    GEN ("always @(cuc_stb_i or cuc_we_i or cuc_adr_i");
870 
    for (i = 0; i < nrf; i++) GEN (" or main_end%i", i);
871 
    GEN (")\n");
872 
    GEN ("  if (cuc_stb_i && cuc_we_i) begin\n");
873 
    GEN ("    ");
874 
 
875 
    for (i = 0; i < nfuncs; i++) if (f[i]) {
876 
      GEN ("    if (cuc_addr_i[15:6] == %i) cuc_ack_o <= #Tp main_end%i;\n",
877 
        f[i]->tmp, f[i]->tmp);
878 
      GEN ("    else ");
879 
    }
880 
    GEN ("cuc_ack_o <= #Tp 1'b0;\n");
881 
    GEN ("  else cuc_ack_o <= #Tp 1'b0;\n");
882 
    GEN ("end\n");
883 
  }
884 
 
885 
  for (j = 0; j < 2; j++) {
886 
    char t = j ? 's' : 'l';
887 
    GEN ("\n/* %s Wishbone bridge */\n", j ? "store" : "load");
888 
    GEN ("reg [%2i:0] %cm_sel;\n", log2 (nrf), t);
889 
    GEN ("reg [%2i:0] %cm_bid;\n", log2 (nrf), t);
890 
 
891 
    GEN ("\n/* highest bid */\n");
892 
    GEN ("always @(");
893 
    for (i = 0; i < nrf; i++) GEN ("%si%i_%cwb_cycstb", i > 0 ? " or " : "", i, t);
894 
    GEN (")\n");
895 
    for (i = 0; i < nrf; i++) GEN ("  %sif (i%i_%cwb_cycstb) %cm_bid <= %i'h%x;\n",
896 
                    i ? "else " : "", i, t, t, log2 (nrf) + 1, i);
897 
 
898 
    GEN ("\n/* selected transfer */\n");
899 
    GEN ("always @(posedge clk or posedge rst)\n");
900 
    GEN ("  if (rst) %cm_sel <= #Tp %cm_sel <= #Tp %i'h0;\n", t, t, log2 (nrf) + 1);
901 
    GEN ("  else if (%cwb_ack_i) %cm_sel <= #Tp %i'h0;\n", t, t, log2 (nrf) + 1);
902 
    GEN ("  else if (!%ccyc_ip) %cm_sel <= #Tp %cm_bid;\n", t, t, t);
903 
 
904 
    GEN ("\n/* Cycle */\n");
905 
    GEN ("assign %cwb_cyc_o = (lwb_cycstb | swb_cycstb);\n", t);
906 
    GEN ("assign %cwb_stb_o = %cwb_stb_o;\n", t, t);
907 
    GEN ("\nalways @(posedge clk or posedge rst)\n");
908 
    GEN ("  if (rst) %ccyc_ip <= #Tp 1'b0;\n", t);
909 
    GEN ("  else if (%cwb_ack_i) %ccyc_ip <= #Tp 1'b0;\n", t, t);
910 
    GEN ("  else %ccyc_ip <= #Tp %cwb_cyc_o;\n", t, t);
911 
  }
912 
 
913 
  GEN ("\n/* Acknowledge */\n");
914 
  for (i = 0; i < nrf; i++)
915 
    GEN ("assign i%i_swb_ack = ((sm_bid == %i & !scyc_ip) | sm_sel == %i) & swb_ack_i;\n", i, i, i);
916 
 
917 
  GEN ("\n/* Data */\n");
918 
  for (i = 0; i < nrf; i++) GEN ("wire [31:0] i%i_swb_dat;\n", i);
919 
  GEN ("\nassign swb_dat_o = ");
920 
  for (i = 0; i < nrf - 1; i++)
921 
    GEN ("\n  sm_bid == %i ? i%i_swb_dat : ", i, i);
922 
  GEN ("i%i_swb_dat;\n\n", nrf - 1);
923 
 
924 
  for (i = 0; i < nrf; i++) GEN ("wire [31:0] i%i_lwb_dat = lwb_dat_i;\n", i);
925 
 
926 
  GEN ("\n/* selects */\n");
927 
  for (i = 0; i < nrf; i++) GEN ("wire [3:0]  i%i_swb_sel, i%i_lwb_sel;\n", i, i);
928 
  GEN ("\nassign swb_sel_o = ");
929 
  for (i = 0; i < nrf - 1; i++)
930 
    GEN ("\n  sm_bid == %i ? i%i_swb_sel : ", i, i);
931 
  GEN ("i%i_swb_sel;\n", nrf - 1);
932 
  GEN ("\nassign lwb_sel_o = ");
933 
  for (i = 0; i < nrf - 1; i++)
934 
    GEN ("\n  lm_bid == %i ? i%i_lwb_sel : ", i, i);
935 
  GEN ("i%i_lwb_sel;\n", nrf - 1);
936 
 
937 
  GEN ("\n/* write enable */\n");
938 
  for (i = 0; i < nrf; i++) GEN ("wire i%i_swb_we, i%i_lwb_we;\n", i, i);
939 
  GEN ("\nassign swb_we_o = ");
940 
  for (i = 0; i < nrf - 1; i++) GEN ("\n  sm_bid == %i ? i%i_swb_we : ", i, i);
941 
  GEN ("i%i_swb_we;\n", nrf - 1);
942 
 
943 
  GEN ("\nassign lwb_we_o = ");
944 
  for (i = 0; i < nrf - 1; i++) GEN ("\n  lm_bid == %i ? i%i_lwb_we : ", i, i);
945 
  GEN ("i%i_lwb_we;\n", nrf - 1);
946 
 
947 
  GEN ("\n/* burst enable */\n");
948 
  for (i = 0; i < nrf; i++) GEN ("wire i%i_swb_linbrst, i%i_lwb_linbrst;\n", i, i);
949 
  GEN ("\nassign swb_linbrst_o = ");
950 
  for (i = 0; i < nrf - 1; i++) GEN ("\n  sm_bid == %i ? i%i_swb_linbrst : ", i, i);
951 
  GEN ("i%i_swb_linbrst;\n", nrf - 1);
952 
  GEN ("\n\nassign lwb_linbrst_o = ");
953 
  for (i = 0; i < nrf - 1; i++) GEN ("\n  lm_bid == %i ? i%i_lwb_linbrst : ", i, i);
954 
  GEN ("i%i_lwb_linbrst;\n", nrf - 1);
955 
 
956 
  /* start/end signals */
957 
  GEN ("\n\n/* start/end signals */\n");
958 
 
959 
  for (i = 0, first = 1; i < nrf; i++) {
960 
    GEN ("%si%i_current == %i && i%i_end", first ? "assign end_o = " : "\n  || ", i, i, i);
961 
    first = 0;
962 
  }
963 
  GEN (";\n\n");
964 
 
965 
  for (i = 0, j = 0; i < nfuncs; i++) if (f[i]) {
966 
    if (log2 (ncallees[i])) {
967 
      GEN ("reg [%i:0] i%i_start_bid;\n", log2 (ncallees[i]), j);
968 
      GEN ("always @(start%i", f[i]->tmp);
969 
      for (j = 0, first = 1; j < f[i]->nfdeps; j++)
970 
        if (f[i]->fdeps[j]) GEN (", ");
971 
      GEN (")\n");
972 
      GEN ("begin !!!\n"); //TODO
973 
      GEN ("  \n");
974 
      GEN ("end\n");
975 
    }
976 
    GEN ("wire i%i_start = start_i;\n", j);
977 
    j++;
978 
  }
979 
  GEN ("\n");
980 
 
981 
  for (i = 0, first = 1; i < nrf; i++) {
982 
    if (log2 (maxncallees + 1))
983 
      GEN ("wire [%i:0] i%i_current = i%i_busy ? i%i_current_r : i%i_start_bid;\n",
984 
        log2 (maxncallees + 1), i, i, i, i, i);
985 
    else GEN ("wire i%i_current = 0;\n", i);
986 
  }
987 
  GEN ("\n");
988 
 
989 
  for (i = 0, first = 1; i < nrf; i++) {
990 
    int rf;
991 
    /* Find real function */
992 
    for (rf = 0; rf < nfuncs; rf++) if (f[rf]->tmp == i) break;
993 
 
994 
    /* Find first register, use r31, if none */
995 
    for (j = 0; j < MAX_REGS; j++) if (f[rf]->used_regs[j]) break;
996 
    GEN ("/* Function %s */\n", prof_func[rf].name);
997 
    GEN ("reg  main_start%i_r;\n", i);
998 
    GEN ("always @(posedge clk or posedge rst)\n");
999 
    GEN ("  if (rst) main_start%i_r <= #Tp 1'b0;\n", i);
1000 
    GEN ("  else if (main_start%i && (i%i_start_bid < %i || i%i_busy))",
1001 
                    i, i, i, ncallees[i], i);
1002 
    GEN (" main_start%i_r <= #Tp 1'b1;\n", i);
1003 
    GEN ("  else if (main_end%i && i%i_re) main_start%i_r <= #Tp 1'b0;\n", i, i, i);
1004 
  }
1005 
 
1006 
  for (i = 0; i < nfuncs; i++) if (f[i]) {
1007 
    int nf = f[i]->tmp;
1008 
    GEN ("\n%s i%i(.clk(clk), .rst(rst),\n", prof_func[i].name, nf);
1009 
    GEN ("");
1010 
    GEN ("  .lwb_adr_o(i%i_lwb_adr), .lwb_dat_i(i%i_lwb_dat), .lwb_cycstb_o(i%i_lwb_cycstb),\n",
1011 
                    nf, nf, nf);
1012 
    GEN ("  .lwb_sel_o(i%i_lwb_sel), .lwb_linbrst_o(i%i_lwb_linbrst), .lwb_ack_i(i%i_lwb_ack),\n",
1013 
                    nf, nf, nf);
1014 
    GEN ("  .swb_adr_o(i%i_swb_adr), .swb_dat_o(i%i_swb_dat), .swb_cycstb_o(i%i_swb_cycstb),\n",
1015 
                    nf, nf, nf);
1016 
    GEN ("  .swb_sel_o(i%i_swb_sel), .swb_linbrst_o(i%i_swb_linbrst), .swb_ack_i(i%i_swb_ack),\n",
1017 
                    nf, nf, nf);
1018 
    GEN ("  ");
1019 
    for (j = 0; j < MAX_REGS; j++) if (f[i]->used_regs[j])
1020 
      GEN (".r%i_i(i%i_r%ii), ", j, nf, j);
1021 
 
1022 
    GEN ("\n  ");
1023 
    for (j = 0, first = 1; j < MAX_REGS; j++)
1024 
      if (f[i]->lur[j] >= 0 && !f[i]->saved_regs[j])
1025 
        GEN (".r%i_o(i%i_r%io), ", j, nf, j);
1026 
    GEN ("\n  .start_i(i%i_start), .end_o(i%i_end));\n", nf, nf);
1027 
  }
1028 
 
1029 
  /* output footer */
1030 
  GEN ("\nendmodule\n");
1031 
 
1032 
  fclose (fo);
1033 
}
1034 
 

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