1 /* gmon_io.c - Input and output from/to gmon.out files.
3 Copyright 2000, 2001, 2002 Free Software Foundation, Inc.
5 This file is part of GNU Binutils.
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 2 of the License, or
10 (at your option) any later version.
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with this program; if not, write to the Free Software
19 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
23 #include "search_list.h"
27 #include "basic_blocks.h"
29 #include "call_graph.h"
32 #include "gmon.h" /* Fetch header for old format. */
35 #include "libiberty.h"
38 int gmon_file_version = 0; /* 0 == old (non-versioned) file format. */
41 DEFUN (gmon_io_read_32, (ifp, valp), FILE * ifp AND unsigned int *valp)
45 if (fread (buf, 1, 4, ifp) != 4)
47 *valp = bfd_get_32 (core_bfd, buf);
52 DEFUN (gmon_io_read_64, (ifp, valp), FILE * ifp AND BFD_HOST_U_64_BIT *valp)
56 if (fread (buf, 1, 8, ifp) != 8)
58 *valp = bfd_get_64 (core_bfd, buf);
63 DEFUN (gmon_io_read_vma, (ifp, valp), FILE * ifp AND bfd_vma *valp)
66 BFD_HOST_U_64_BIT val64;
68 switch (bfd_arch_bits_per_address (core_bfd))
71 if (gmon_io_read_32 (ifp, &val32))
77 if (gmon_io_read_64 (ifp, &val64))
83 fprintf (stderr, _("%s: bits per address has unexpected value of %u\n"),
84 whoami, bfd_arch_bits_per_address (core_bfd));
91 DEFUN (gmon_io_read, (ifp, buf, n), FILE * ifp AND char *buf AND size_t n)
93 if (fread (buf, 1, n, ifp) != n)
99 DEFUN (gmon_io_write_32, (ofp, val), FILE * ofp AND unsigned int val)
103 bfd_put_32 (core_bfd, val, buf);
104 if (fwrite (buf, 1, 4, ofp) != 4)
110 DEFUN (gmon_io_write_64, (ofp, val), FILE * ofp AND BFD_HOST_U_64_BIT val)
114 bfd_put_64 (core_bfd, val, buf);
115 if (fwrite (buf, 1, 8, ofp) != 8)
121 DEFUN (gmon_io_write_vma, (ofp, val), FILE * ofp AND bfd_vma val)
124 switch (bfd_arch_bits_per_address (core_bfd))
127 if (gmon_io_write_32 (ofp, (unsigned int) val))
132 if (gmon_io_write_64 (ofp, (BFD_HOST_U_64_BIT) val))
137 fprintf (stderr, _("%s: bits per address has unexpected value of %u\n"),
138 whoami, bfd_arch_bits_per_address (core_bfd));
145 DEFUN (gmon_io_write_8, (ofp, val), FILE * ofp AND unsigned char val)
149 bfd_put_8 (core_bfd, val, buf);
150 if (fwrite (buf, 1, 1, ofp) != 1)
156 DEFUN (gmon_io_write, (ofp, buf, n), FILE * ofp AND char *buf AND size_t n)
158 if (fwrite (buf, 1, n, ofp) != n)
164 DEFUN (gmon_read_raw_arc, (ifp, fpc, spc, cnt), FILE * ifp AND bfd_vma * fpc AND bfd_vma * spc AND unsigned long * cnt)
166 BFD_HOST_U_64_BIT cnt64;
169 if (gmon_io_read_vma (ifp, fpc)
170 || gmon_io_read_vma (ifp, spc))
173 switch (bfd_arch_bits_per_address (core_bfd))
176 if (gmon_io_read_32 (ifp, &cnt32))
182 if (gmon_io_read_64 (ifp, &cnt64))
188 fprintf (stderr, _("%s: bits per address has unexpected value of %u\n"),
189 whoami, bfd_arch_bits_per_address (core_bfd));
196 DEFUN (gmon_write_raw_arc, (ofp, fpc, spc, cnt), FILE * ofp AND bfd_vma fpc AND bfd_vma spc AND unsigned long cnt)
199 if (gmon_io_write_vma (ofp, fpc)
200 || gmon_io_write_vma (ofp, spc))
203 switch (bfd_arch_bits_per_address (core_bfd))
206 if (gmon_io_write_32 (ofp, (unsigned int) cnt))
211 if (gmon_io_write_64 (ofp, (BFD_HOST_U_64_BIT) cnt))
216 fprintf (stderr, _("%s: bits per address has unexpected value of %u\n"),
217 whoami, bfd_arch_bits_per_address (core_bfd));
224 DEFUN (gmon_out_read, (filename), const char *filename)
227 struct gmon_hdr ghdr;
229 int nhist = 0, narcs = 0, nbbs = 0;
231 /* Open gmon.out file. */
232 if (strcmp (filename, "-") == 0)
236 SET_BINARY (fileno (stdin));
241 ifp = fopen (filename, FOPEN_RB);
250 if (fread (&ghdr, sizeof (struct gmon_hdr), 1, ifp) != 1)
252 fprintf (stderr, _("%s: file too short to be a gmon file\n"),
257 if ((file_format == FF_MAGIC)
258 || (file_format == FF_AUTO && !strncmp (&ghdr.cookie[0], GMON_MAGIC, 4)))
260 if (file_format == FF_MAGIC && strncmp (&ghdr.cookie[0], GMON_MAGIC, 4))
262 fprintf (stderr, _("%s: file `%s' has bad magic cookie\n"),
267 /* Right magic, so it's probably really a new gmon.out file. */
268 gmon_file_version = bfd_get_32 (core_bfd, (bfd_byte *) ghdr.version);
270 if (gmon_file_version != GMON_VERSION && gmon_file_version != 0)
273 _("%s: file `%s' has unsupported version %d\n"),
274 whoami, filename, gmon_file_version);
278 /* Read in all the records. */
279 while (fread (&tag, sizeof (tag), 1, ifp) == 1)
283 case GMON_TAG_TIME_HIST:
285 gmon_input |= INPUT_HISTOGRAM;
286 hist_read_rec (ifp, filename);
289 case GMON_TAG_CG_ARC:
291 gmon_input |= INPUT_CALL_GRAPH;
292 cg_read_rec (ifp, filename);
295 case GMON_TAG_BB_COUNT:
297 gmon_input |= INPUT_BB_COUNTS;
298 bb_read_rec (ifp, filename);
303 _("%s: %s: found bad tag %d (file corrupted?)\n"),
304 whoami, filename, tag);
309 else if (file_format == FF_AUTO
310 || file_format == FF_BSD
311 || file_format == FF_BSD44)
319 int i, samp_bytes, header_size = 0;
321 bfd_vma from_pc, self_pc;
327 /* Information from a gmon.out file is in two parts: an array of
328 sampling hits within pc ranges, and the arcs. */
329 gmon_input = INPUT_HISTOGRAM | INPUT_CALL_GRAPH;
331 /* This fseek() ought to work even on stdin as long as it's
332 not an interactive device (heck, is there anybody who would
333 want to type in a gmon.out at the terminal?). */
334 if (fseek (ifp, 0, SEEK_SET) < 0)
340 /* The beginning of the old BSD header and the 4.4BSD header
341 are the same: lowpc, highpc, ncnt */
342 if (gmon_io_read_vma (ifp, &tmp.low_pc)
343 || gmon_io_read_vma (ifp, &tmp.high_pc)
344 || gmon_io_read_32 (ifp, &tmp.ncnt))
347 fprintf (stderr, _("%s: file too short to be a gmon file\n"),
352 /* Check to see if this a 4.4BSD-style header. */
353 if (gmon_io_read_32 (ifp, &version))
356 if (version == GMONVERSION)
360 /* 4.4BSD format header. */
361 if (gmon_io_read_32 (ifp, &profrate))
366 else if (hz != profrate)
369 _("%s: profiling rate incompatible with first gmon file\n"),
374 switch (bfd_arch_bits_per_address (core_bfd))
377 header_size = GMON_HDRSIZE_BSD44_32;
381 header_size = GMON_HDRSIZE_BSD44_64;
386 _("%s: bits per address has unexpected value of %u\n"),
387 whoami, bfd_arch_bits_per_address (core_bfd));
393 /* Old style BSD format. */
394 if (file_format == FF_BSD44)
396 fprintf (stderr, _("%s: file `%s' has bad magic cookie\n"),
401 switch (bfd_arch_bits_per_address (core_bfd))
404 header_size = GMON_HDRSIZE_OLDBSD_32;
408 header_size = GMON_HDRSIZE_OLDBSD_64;
413 _("%s: bits per address has unexpected value of %u\n"),
414 whoami, bfd_arch_bits_per_address (core_bfd));
419 /* Position the file to after the header. */
420 if (fseek (ifp, header_size, SEEK_SET) < 0)
426 if (s_highpc && (tmp.low_pc != h.low_pc
427 || tmp.high_pc != h.high_pc || tmp.ncnt != h.ncnt))
429 fprintf (stderr, _("%s: incompatible with first gmon file\n"),
435 s_lowpc = (bfd_vma) h.low_pc;
436 s_highpc = (bfd_vma) h.high_pc;
437 lowpc = (bfd_vma) h.low_pc / sizeof (UNIT);
438 highpc = (bfd_vma) h.high_pc / sizeof (UNIT);
439 samp_bytes = h.ncnt - header_size;
440 hist_num_bins = samp_bytes / sizeof (UNIT);
443 printf ("[gmon_out_read] lowpc 0x%lx highpc 0x%lx ncnt %d\n",
444 (unsigned long) h.low_pc, (unsigned long) h.high_pc,
446 printf ("[gmon_out_read] s_lowpc 0x%lx s_highpc 0x%lx\n",
447 (unsigned long) s_lowpc, (unsigned long) s_highpc);
448 printf ("[gmon_out_read] lowpc 0x%lx highpc 0x%lx\n",
449 (unsigned long) lowpc, (unsigned long) highpc);
450 printf ("[gmon_out_read] samp_bytes %d hist_num_bins %d\n",
451 samp_bytes, hist_num_bins));
453 /* Make sure that we have sensible values. */
454 if (samp_bytes < 0 || lowpc > highpc)
457 _("%s: file '%s' does not appear to be in gmon.out format\n"),
468 (int *) xmalloc (hist_num_bins * sizeof (hist_sample[0]));
470 memset (hist_sample, 0, hist_num_bins * sizeof (hist_sample[0]));
473 for (i = 0; i < hist_num_bins; ++i)
475 if (fread (raw_bin_count, sizeof (raw_bin_count), 1, ifp) != 1)
478 _("%s: unexpected EOF after reading %d/%d bins\n"),
479 whoami, --i, hist_num_bins);
483 hist_sample[i] += bfd_get_16 (core_bfd, (bfd_byte *) raw_bin_count);
486 /* The rest of the file consists of a bunch of
487 <from,self,count> tuples. */
488 while (gmon_read_raw_arc (ifp, &from_pc, &self_pc, &count) == 0)
493 printf ("[gmon_out_read] frompc 0x%lx selfpc 0x%lx count %lu\n",
494 (unsigned long) from_pc, (unsigned long) self_pc, count));
497 cg_tally (from_pc, self_pc, count);
504 /* How many ticks per second? If we can't tell, report
511 fprintf (stderr, _("time is in ticks, not seconds\n"));
517 fprintf (stderr, _("%s: don't know how to deal with file format %d\n"),
518 whoami, file_format);
522 if (output_style & STYLE_GMON_INFO)
524 printf (_("File `%s' (version %d) contains:\n"),
525 filename, gmon_file_version);
527 _("\t%d histogram record\n") :
528 _("\t%d histogram records\n"), nhist);
530 _("\t%d call-graph record\n") :
531 _("\t%d call-graph records\n"), narcs);
533 _("\t%d basic-block count record\n") :
534 _("\t%d basic-block count records\n"), nbbs);
535 first_output = FALSE;
541 DEFUN (gmon_out_write, (filename), const char *filename)
544 struct gmon_hdr ghdr;
546 ofp = fopen (filename, FOPEN_WB);
553 if (file_format == FF_AUTO || file_format == FF_MAGIC)
555 /* Write gmon header. */
557 memcpy (&ghdr.cookie[0], GMON_MAGIC, 4);
558 bfd_put_32 (core_bfd, GMON_VERSION, (bfd_byte *) ghdr.version);
560 if (fwrite (&ghdr, sizeof (ghdr), 1, ofp) != 1)
566 /* Write execution time histogram if we have one. */
567 if (gmon_input & INPUT_HISTOGRAM)
568 hist_write_hist (ofp, filename);
570 /* Write call graph arcs if we have any. */
571 if (gmon_input & INPUT_CALL_GRAPH)
572 cg_write_arcs (ofp, filename);
574 /* Write basic-block info if we have it. */
575 if (gmon_input & INPUT_BB_COUNTS)
576 bb_write_blocks (ofp, filename);
578 else if (file_format == FF_BSD || file_format == FF_BSD44)
587 memset (pad, 0, sizeof (pad));
590 /* Decide how large the header will be. Use the 4.4BSD format
591 header if explicitly specified, or if the profiling rate is
592 non-standard. Otherwise, use the old BSD format. */
593 if (file_format == FF_BSD44
597 switch (bfd_arch_bits_per_address (core_bfd))
600 hdrsize = GMON_HDRSIZE_BSD44_32;
604 hdrsize = GMON_HDRSIZE_BSD44_64;
609 _("%s: bits per address has unexpected value of %u\n"),
610 whoami, bfd_arch_bits_per_address (core_bfd));
617 switch (bfd_arch_bits_per_address (core_bfd))
620 hdrsize = GMON_HDRSIZE_OLDBSD_32;
624 hdrsize = GMON_HDRSIZE_OLDBSD_64;
625 /* FIXME: Checking host compiler defines here means that we can't
626 use a cross gprof alpha OSF. */
627 #if defined(__alpha__) && defined (__osf__)
634 _("%s: bits per address has unexpected value of %u\n"),
635 whoami, bfd_arch_bits_per_address (core_bfd));
640 /* Write the parts of the headers that are common to both the
641 old BSD and 4.4BSD formats. */
642 if (gmon_io_write_vma (ofp, s_lowpc)
643 || gmon_io_write_vma (ofp, s_highpc)
644 || gmon_io_write_32 (ofp, hist_num_bins * sizeof (UNIT) + hdrsize))
650 /* Write out the 4.4BSD header bits, if that's what we're using. */
651 if (file_format == FF_BSD44
654 if (gmon_io_write_32 (ofp, GMONVERSION)
655 || gmon_io_write_32 (ofp, hz))
662 /* Now write out any necessary padding after the meaningful
665 && fwrite (pad, 1, padsize, ofp) != padsize)
671 /* Dump the samples. */
672 for (i = 0; i < hist_num_bins; ++i)
674 bfd_put_16 (core_bfd, hist_sample[i], (bfd_byte *) & raw_bin_count[0]);
675 if (fwrite (&raw_bin_count[0], sizeof (raw_bin_count), 1, ofp) != 1)
682 /* Dump the normalized raw arc information. */
683 for (sym = symtab.base; sym < symtab.limit; ++sym)
685 for (arc = sym->cg.children; arc; arc = arc->next_child)
687 if (gmon_write_raw_arc (ofp, arc->parent->addr,
688 arc->child->addr, arc->count))
694 printf ("[dumpsum] frompc 0x%lx selfpc 0x%lx count %lu\n",
695 (unsigned long) arc->parent->addr,
696 (unsigned long) arc->child->addr, arc->count));
704 fprintf (stderr, _("%s: don't know how to deal with file format %d\n"),
705 whoami, file_format);