2 * Input and output from/to gmon.out files.
5 #include "basic_blocks.h"
8 #include "call_graph.h"
11 #include "gmon.h" /* fetch header for old format */
15 #include "libiberty.h"
18 int gmon_file_version = 0; /* 0 == old (non-versioned) file format */
21 * This probably ought to be in libbfd.
24 DEFUN (get_vma, (abfd, addr), bfd * abfd AND bfd_byte * addr)
26 switch (sizeof (bfd_vma))
29 return bfd_get_32 (abfd, addr);
31 return bfd_get_64 (abfd, addr);
33 fprintf (stderr, "%s: bfd_vma has unexpected size of %ld bytes\n",
34 whoami, (long) sizeof (bfd_vma));
41 * This probably ought to be in libbfd.
44 DEFUN (put_vma, (abfd, val, addr), bfd * abfd AND bfd_vma val AND bfd_byte * addr)
46 switch (sizeof (bfd_vma))
49 bfd_put_32 (abfd, val, addr);
52 bfd_put_64 (abfd, val, addr);
55 fprintf (stderr, "%s: bfd_vma has unexpected size of %ld bytes\n",
56 whoami, (long) sizeof (bfd_vma));
63 DEFUN (gmon_out_read, (filename), const char *filename)
68 int nhist = 0, narcs = 0, nbbs = 0;
70 /* open gmon.out file: */
72 if (strcmp (filename, "-") == 0)
78 ifp = fopen (filename, FOPEN_RB);
85 if (fread (&ghdr, sizeof (struct gmon_hdr), 1, ifp) != 1)
87 fprintf (stderr, "%s: file too short to be a gmon file\n",
92 if ((file_format == FF_MAGIC) ||
93 (file_format == FF_AUTO && !strncmp (&ghdr.cookie[0], GMON_MAGIC, 4)))
95 if (file_format == FF_MAGIC && strncmp (&ghdr.cookie[0], GMON_MAGIC, 4))
97 fprintf (stderr, "%s: file `%s' has bad magic cookie\n",
102 /* right magic, so it's probably really a new gmon.out file */
104 gmon_file_version = bfd_get_32 (core_bfd, (bfd_byte *) ghdr.version);
105 if (gmon_file_version != GMON_VERSION && gmon_file_version != 0)
108 "%s: file `%s' has unsupported version %d\n",
109 whoami, filename, gmon_file_version);
113 /* read in all the records: */
114 while (fread (&tag, sizeof (tag), 1, ifp) == 1)
118 case GMON_TAG_TIME_HIST:
120 gmon_input |= INPUT_HISTOGRAM;
121 hist_read_rec (ifp, filename);
124 case GMON_TAG_CG_ARC:
126 gmon_input |= INPUT_CALL_GRAPH;
127 cg_read_rec (ifp, filename);
130 case GMON_TAG_BB_COUNT:
132 gmon_input |= INPUT_BB_COUNTS;
133 bb_read_rec (ifp, filename);
138 "%s: %s: found bad tag %d (file corrupted?)\n",
139 whoami, filename, tag);
144 else if (file_format == FF_AUTO || file_format == FF_BSD)
152 int i, samp_bytes, count;
153 bfd_vma from_pc, self_pc;
154 struct raw_arc raw_arc;
161 * Information from a gmon.out file is in two parts: an array of
162 * sampling hits within pc ranges, and the arcs.
164 gmon_input = INPUT_HISTOGRAM | INPUT_CALL_GRAPH;
167 * This fseek() ought to work even on stdin as long as it's
168 * not an interactive device (heck, is there anybody who would
169 * want to type in a gmon.out at the terminal?).
171 if (fseek (ifp, 0, SEEK_SET) < 0)
176 if (fread (&raw, 1, sizeof (struct raw_phdr), ifp)
177 != sizeof (struct raw_phdr))
179 fprintf (stderr, "%s: file too short to be a gmon file\n",
183 tmp.low_pc = get_vma (core_bfd, (bfd_byte *) & raw.low_pc[0]);
184 tmp.high_pc = get_vma (core_bfd, (bfd_byte *) & raw.high_pc[0]);
185 tmp.ncnt = bfd_get_32 (core_bfd, (bfd_byte *) & raw.ncnt[0]);
186 if (s_highpc && (tmp.low_pc != h.low_pc ||
187 tmp.high_pc != h.high_pc || tmp.ncnt != h.ncnt))
189 fprintf (stderr, "%s: incompatible with first gmon file\n",
194 s_lowpc = (bfd_vma) h.low_pc;
195 s_highpc = (bfd_vma) h.high_pc;
196 lowpc = (bfd_vma) h.low_pc / sizeof (UNIT);
197 highpc = (bfd_vma) h.high_pc / sizeof (UNIT);
198 samp_bytes = h.ncnt - sizeof (struct raw_phdr);
199 hist_num_bins = samp_bytes / sizeof (UNIT);
201 printf ("[gmon_out_read] lowpc 0x%lx highpc 0x%lx ncnt %d\n",
202 h.low_pc, h.high_pc, h.ncnt);
203 printf ("[gmon_out_read] s_lowpc 0x%lx s_highpc 0x%lx\n",
205 printf ("[gmon_out_read] lowpc 0x%lx highpc 0x%lx\n",
207 printf ("[gmon_out_read] samp_bytes %d hist_num_bins %d\n",
208 samp_bytes, hist_num_bins));
218 (int *) xmalloc (hist_num_bins * sizeof (hist_sample[0]));
219 memset (hist_sample, 0, hist_num_bins * sizeof (hist_sample[0]));
222 for (i = 0; i < hist_num_bins; ++i)
224 if (fread (raw_bin_count, sizeof (raw_bin_count), 1, ifp) != 1)
227 "%s: unexpected EOF after reading %d/%d bins\n",
228 whoami, --i, hist_num_bins);
231 hist_sample[i] += bfd_get_16 (core_bfd, (bfd_byte *) raw_bin_count);
235 * The rest of the file consists of a bunch of <from,self,count>
238 while (fread (&raw_arc, sizeof (raw_arc), 1, ifp) == 1)
241 from_pc = get_vma (core_bfd, (bfd_byte *) raw_arc.from_pc);
242 self_pc = get_vma (core_bfd, (bfd_byte *) raw_arc.self_pc);
243 count = bfd_get_32 (core_bfd, (bfd_byte *) raw_arc.count);
245 printf ("[gmon_out_read] frompc 0x%lx selfpc 0x%lx count %d\n",
246 from_pc, self_pc, count));
248 cg_tally (from_pc, self_pc, count);
255 * How many ticks per second? If we can't tell, report
262 fprintf (stderr, "time is in ticks, not seconds\n");
268 fprintf (stderr, "%s: don't know how to deal with file format %d\n",
269 whoami, file_format);
273 if (output_style & STYLE_GMON_INFO)
275 printf ("File `%s' (version %d) contains:\n",
276 filename, gmon_file_version);
277 printf ("\t%d histogram record%s\n",
278 nhist, nhist == 1 ? "" : "s");
279 printf ("\t%d call-graph record%s\n",
280 narcs, narcs == 1 ? "" : "s");
281 printf ("\t%d basic-block count record%s\n",
282 nbbs, nbbs == 1 ? "" : "s");
283 first_output = FALSE;
285 } /* gmon_out_read */
289 DEFUN (gmon_out_write, (filename), const char *filename)
292 struct gmon_hdr ghdr;
294 ofp = fopen (filename, FOPEN_WB);
301 if (file_format == FF_AUTO || file_format == FF_MAGIC)
303 /* write gmon header: */
305 memcpy (&ghdr.cookie[0], GMON_MAGIC, 4);
306 bfd_put_32 (core_bfd, GMON_VERSION, (bfd_byte *) ghdr.version);
307 if (fwrite (&ghdr, sizeof (ghdr), 1, ofp) != 1)
313 /* write execution time histogram if we have one: */
314 if (gmon_input & INPUT_HISTOGRAM)
316 hist_write_hist (ofp, filename);
319 /* write call graph arcs if we have any: */
320 if (gmon_input & INPUT_CALL_GRAPH)
322 cg_write_arcs (ofp, filename);
325 /* write basic-block info if we have it: */
326 if (gmon_input & INPUT_BB_COUNTS)
328 bb_write_blocks (ofp, filename);
331 else if (file_format == FF_BSD)
333 struct raw_arc raw_arc;
340 put_vma (core_bfd, s_lowpc, (bfd_byte *) & lpc);
341 put_vma (core_bfd, s_highpc, (bfd_byte *) & hpc);
342 bfd_put_32 (core_bfd,
343 hist_num_bins * sizeof (UNIT) + sizeof (struct raw_phdr),
344 (bfd_byte *) & ncnt);
347 if (fwrite (&lpc, sizeof (lpc), 1, ofp) != 1
348 || fwrite (&hpc, sizeof (hpc), 1, ofp) != 1
349 || fwrite (&ncnt, sizeof (ncnt), 1, ofp) != 1)
355 /* dump the samples: */
357 for (i = 0; i < hist_num_bins; ++i)
359 bfd_put_16 (core_bfd, hist_sample[i], (bfd_byte *) & raw_bin_count[0]);
360 if (fwrite (&raw_bin_count[0], sizeof (raw_bin_count), 1, ofp) != 1)
367 /* dump the normalized raw arc information: */
369 for (sym = symtab.base; sym < symtab.limit; ++sym)
371 for (arc = sym->cg.children; arc; arc = arc->next_child)
373 put_vma (core_bfd, arc->parent->addr,
374 (bfd_byte *) raw_arc.from_pc);
375 put_vma (core_bfd, arc->child->addr,
376 (bfd_byte *) raw_arc.self_pc);
377 bfd_put_32 (core_bfd, arc->count, (bfd_byte *) raw_arc.count);
378 if (fwrite (&raw_arc, sizeof (raw_arc), 1, ofp) != 1)
384 printf ("[dumpsum] frompc 0x%lx selfpc 0x%lx count %d\n",
385 arc->parent->addr, arc->child->addr, arc->count));
392 fprintf (stderr, "%s: don't know how to deal with file format %d\n",
393 whoami, file_format);
396 } /* gmon_out_write */