709 lines
17 KiB
C
709 lines
17 KiB
C
/* gmon_io.c - Input and output from/to gmon.out files.
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Copyright 2000, 2001, 2002 Free Software Foundation, Inc.
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This file is part of GNU Binutils.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
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02111-1307, USA. */
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#include "gprof.h"
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#include "search_list.h"
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#include "source.h"
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#include "symtab.h"
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#include "cg_arcs.h"
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#include "basic_blocks.h"
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#include "corefile.h"
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#include "call_graph.h"
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#include "gmon_io.h"
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#include "gmon_out.h"
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#include "gmon.h" /* Fetch header for old format. */
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#include "hertz.h"
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#include "hist.h"
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#include "libiberty.h"
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int gmon_input = 0;
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int gmon_file_version = 0; /* 0 == old (non-versioned) file format. */
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int
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DEFUN (gmon_io_read_32, (ifp, valp), FILE * ifp AND unsigned int *valp)
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{
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char buf[4];
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if (fread (buf, 1, 4, ifp) != 4)
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return 1;
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*valp = bfd_get_32 (core_bfd, buf);
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return 0;
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}
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int
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DEFUN (gmon_io_read_64, (ifp, valp), FILE * ifp AND BFD_HOST_U_64_BIT *valp)
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{
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char buf[8];
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if (fread (buf, 1, 8, ifp) != 8)
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return 1;
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*valp = bfd_get_64 (core_bfd, buf);
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return 0;
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}
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int
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DEFUN (gmon_io_read_vma, (ifp, valp), FILE * ifp AND bfd_vma *valp)
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{
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unsigned int val32;
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BFD_HOST_U_64_BIT val64;
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switch (bfd_arch_bits_per_address (core_bfd))
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{
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case 32:
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if (gmon_io_read_32 (ifp, &val32))
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return 1;
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*valp = val32;
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break;
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case 64:
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if (gmon_io_read_64 (ifp, &val64))
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return 1;
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*valp = val64;
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break;
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default:
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fprintf (stderr, _("%s: bits per address has unexpected value of %u\n"),
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whoami, bfd_arch_bits_per_address (core_bfd));
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done (1);
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}
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return 0;
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}
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int
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DEFUN (gmon_io_read, (ifp, buf, n), FILE * ifp AND char *buf AND size_t n)
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{
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if (fread (buf, 1, n, ifp) != n)
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return 1;
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return 0;
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}
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int
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DEFUN (gmon_io_write_32, (ofp, val), FILE * ofp AND unsigned int val)
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{
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char buf[4];
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bfd_put_32 (core_bfd, val, buf);
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if (fwrite (buf, 1, 4, ofp) != 4)
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return 1;
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return 0;
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}
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int
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DEFUN (gmon_io_write_64, (ofp, val), FILE * ofp AND BFD_HOST_U_64_BIT val)
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{
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char buf[8];
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bfd_put_64 (core_bfd, val, buf);
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if (fwrite (buf, 1, 8, ofp) != 8)
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return 1;
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return 0;
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}
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int
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DEFUN (gmon_io_write_vma, (ofp, val), FILE * ofp AND bfd_vma val)
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{
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switch (bfd_arch_bits_per_address (core_bfd))
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{
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case 32:
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if (gmon_io_write_32 (ofp, (unsigned int) val))
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return 1;
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break;
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case 64:
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if (gmon_io_write_64 (ofp, (BFD_HOST_U_64_BIT) val))
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return 1;
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break;
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default:
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fprintf (stderr, _("%s: bits per address has unexpected value of %u\n"),
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whoami, bfd_arch_bits_per_address (core_bfd));
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done (1);
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}
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return 0;
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}
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int
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DEFUN (gmon_io_write_8, (ofp, val), FILE * ofp AND unsigned char val)
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{
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char buf[1];
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bfd_put_8 (core_bfd, val, buf);
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if (fwrite (buf, 1, 1, ofp) != 1)
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return 1;
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return 0;
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}
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int
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DEFUN (gmon_io_write, (ofp, buf, n), FILE * ofp AND char *buf AND size_t n)
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{
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if (fwrite (buf, 1, n, ofp) != n)
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return 1;
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return 0;
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}
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int
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DEFUN (gmon_read_raw_arc, (ifp, fpc, spc, cnt), FILE * ifp AND bfd_vma * fpc AND bfd_vma * spc AND unsigned long * cnt)
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{
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BFD_HOST_U_64_BIT cnt64;
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unsigned int cnt32;
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if (gmon_io_read_vma (ifp, fpc)
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|| gmon_io_read_vma (ifp, spc))
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return 1;
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switch (bfd_arch_bits_per_address (core_bfd))
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{
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case 32:
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if (gmon_io_read_32 (ifp, &cnt32))
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return 1;
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*cnt = cnt32;
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break;
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case 64:
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if (gmon_io_read_64 (ifp, &cnt64))
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return 1;
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*cnt = cnt64;
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break;
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default:
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fprintf (stderr, _("%s: bits per address has unexpected value of %u\n"),
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whoami, bfd_arch_bits_per_address (core_bfd));
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done (1);
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}
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return 0;
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}
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int
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DEFUN (gmon_write_raw_arc, (ofp, fpc, spc, cnt), FILE * ofp AND bfd_vma fpc AND bfd_vma spc AND unsigned long cnt)
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{
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if (gmon_io_write_vma (ofp, fpc)
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|| gmon_io_write_vma (ofp, spc))
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return 1;
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switch (bfd_arch_bits_per_address (core_bfd))
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{
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case 32:
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if (gmon_io_write_32 (ofp, (unsigned int) cnt))
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return 1;
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break;
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case 64:
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if (gmon_io_write_64 (ofp, (BFD_HOST_U_64_BIT) cnt))
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return 1;
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break;
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default:
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fprintf (stderr, _("%s: bits per address has unexpected value of %u\n"),
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whoami, bfd_arch_bits_per_address (core_bfd));
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done (1);
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}
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return 0;
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}
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void
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DEFUN (gmon_out_read, (filename), const char *filename)
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{
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FILE *ifp;
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struct gmon_hdr ghdr;
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unsigned char tag;
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int nhist = 0, narcs = 0, nbbs = 0;
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/* Open gmon.out file. */
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if (strcmp (filename, "-") == 0)
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{
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ifp = stdin;
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#ifdef SET_BINARY
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SET_BINARY (fileno (stdin));
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#endif
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}
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else
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{
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ifp = fopen (filename, FOPEN_RB);
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if (!ifp)
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{
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perror (filename);
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done (1);
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}
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}
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if (fread (&ghdr, sizeof (struct gmon_hdr), 1, ifp) != 1)
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{
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fprintf (stderr, _("%s: file too short to be a gmon file\n"),
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filename);
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done (1);
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}
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if ((file_format == FF_MAGIC)
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|| (file_format == FF_AUTO && !strncmp (&ghdr.cookie[0], GMON_MAGIC, 4)))
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{
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if (file_format == FF_MAGIC && strncmp (&ghdr.cookie[0], GMON_MAGIC, 4))
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{
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fprintf (stderr, _("%s: file `%s' has bad magic cookie\n"),
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whoami, filename);
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done (1);
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}
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/* Right magic, so it's probably really a new gmon.out file. */
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gmon_file_version = bfd_get_32 (core_bfd, (bfd_byte *) ghdr.version);
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if (gmon_file_version != GMON_VERSION && gmon_file_version != 0)
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{
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fprintf (stderr,
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_("%s: file `%s' has unsupported version %d\n"),
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whoami, filename, gmon_file_version);
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done (1);
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}
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/* Read in all the records. */
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while (fread (&tag, sizeof (tag), 1, ifp) == 1)
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{
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switch (tag)
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{
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case GMON_TAG_TIME_HIST:
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++nhist;
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gmon_input |= INPUT_HISTOGRAM;
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hist_read_rec (ifp, filename);
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break;
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case GMON_TAG_CG_ARC:
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++narcs;
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gmon_input |= INPUT_CALL_GRAPH;
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cg_read_rec (ifp, filename);
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break;
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case GMON_TAG_BB_COUNT:
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++nbbs;
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gmon_input |= INPUT_BB_COUNTS;
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bb_read_rec (ifp, filename);
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break;
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default:
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fprintf (stderr,
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_("%s: %s: found bad tag %d (file corrupted?)\n"),
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whoami, filename, tag);
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done (1);
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}
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}
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}
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else if (file_format == FF_AUTO
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|| file_format == FF_BSD
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|| file_format == FF_BSD44)
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{
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struct hdr
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{
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bfd_vma low_pc;
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bfd_vma high_pc;
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int ncnt;
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};
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int i, samp_bytes, header_size = 0;
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unsigned long count;
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bfd_vma from_pc, self_pc;
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static struct hdr h;
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UNIT raw_bin_count;
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struct hdr tmp;
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int version;
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/* Information from a gmon.out file is in two parts: an array of
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sampling hits within pc ranges, and the arcs. */
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gmon_input = INPUT_HISTOGRAM | INPUT_CALL_GRAPH;
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/* This fseek() ought to work even on stdin as long as it's
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not an interactive device (heck, is there anybody who would
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want to type in a gmon.out at the terminal?). */
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if (fseek (ifp, 0, SEEK_SET) < 0)
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{
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perror (filename);
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done (1);
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}
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/* The beginning of the old BSD header and the 4.4BSD header
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are the same: lowpc, highpc, ncnt */
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if (gmon_io_read_vma (ifp, &tmp.low_pc)
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|| gmon_io_read_vma (ifp, &tmp.high_pc)
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|| gmon_io_read_32 (ifp, &tmp.ncnt))
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{
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bad_gmon_file:
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fprintf (stderr, _("%s: file too short to be a gmon file\n"),
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filename);
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done (1);
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}
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/* Check to see if this a 4.4BSD-style header. */
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if (gmon_io_read_32 (ifp, &version))
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goto bad_gmon_file;
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if (version == GMONVERSION)
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{
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int profrate;
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/* 4.4BSD format header. */
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if (gmon_io_read_32 (ifp, &profrate))
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goto bad_gmon_file;
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if (!s_highpc)
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hz = profrate;
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else if (hz != profrate)
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{
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fprintf (stderr,
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_("%s: profiling rate incompatible with first gmon file\n"),
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filename);
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done (1);
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}
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switch (bfd_arch_bits_per_address (core_bfd))
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{
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case 32:
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header_size = GMON_HDRSIZE_BSD44_32;
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break;
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case 64:
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header_size = GMON_HDRSIZE_BSD44_64;
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break;
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default:
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fprintf (stderr,
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_("%s: bits per address has unexpected value of %u\n"),
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whoami, bfd_arch_bits_per_address (core_bfd));
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done (1);
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}
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}
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else
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{
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/* Old style BSD format. */
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if (file_format == FF_BSD44)
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{
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fprintf (stderr, _("%s: file `%s' has bad magic cookie\n"),
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whoami, filename);
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done (1);
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}
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switch (bfd_arch_bits_per_address (core_bfd))
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{
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case 32:
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header_size = GMON_HDRSIZE_OLDBSD_32;
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break;
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case 64:
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header_size = GMON_HDRSIZE_OLDBSD_64;
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break;
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default:
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fprintf (stderr,
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_("%s: bits per address has unexpected value of %u\n"),
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whoami, bfd_arch_bits_per_address (core_bfd));
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done (1);
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}
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}
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/* Position the file to after the header. */
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if (fseek (ifp, header_size, SEEK_SET) < 0)
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{
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perror (filename);
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done (1);
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}
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if (s_highpc && (tmp.low_pc != h.low_pc
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|| tmp.high_pc != h.high_pc || tmp.ncnt != h.ncnt))
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{
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fprintf (stderr, _("%s: incompatible with first gmon file\n"),
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filename);
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done (1);
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}
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h = tmp;
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s_lowpc = (bfd_vma) h.low_pc;
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s_highpc = (bfd_vma) h.high_pc;
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lowpc = (bfd_vma) h.low_pc / sizeof (UNIT);
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highpc = (bfd_vma) h.high_pc / sizeof (UNIT);
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samp_bytes = h.ncnt - header_size;
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hist_num_bins = samp_bytes / sizeof (UNIT);
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DBG (SAMPLEDEBUG,
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printf ("[gmon_out_read] lowpc 0x%lx highpc 0x%lx ncnt %d\n",
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(unsigned long) h.low_pc, (unsigned long) h.high_pc,
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h.ncnt);
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printf ("[gmon_out_read] s_lowpc 0x%lx s_highpc 0x%lx\n",
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(unsigned long) s_lowpc, (unsigned long) s_highpc);
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printf ("[gmon_out_read] lowpc 0x%lx highpc 0x%lx\n",
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(unsigned long) lowpc, (unsigned long) highpc);
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printf ("[gmon_out_read] samp_bytes %d hist_num_bins %d\n",
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samp_bytes, hist_num_bins));
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/* Make sure that we have sensible values. */
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if (samp_bytes < 0 || lowpc > highpc)
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{
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fprintf (stderr,
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_("%s: file '%s' does not appear to be in gmon.out format\n"),
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whoami, filename);
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done (1);
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}
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if (hist_num_bins)
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++nhist;
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if (!hist_sample)
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{
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hist_sample =
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(int *) xmalloc (hist_num_bins * sizeof (hist_sample[0]));
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memset (hist_sample, 0, hist_num_bins * sizeof (hist_sample[0]));
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}
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for (i = 0; i < hist_num_bins; ++i)
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{
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if (fread (raw_bin_count, sizeof (raw_bin_count), 1, ifp) != 1)
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{
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fprintf (stderr,
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_("%s: unexpected EOF after reading %d/%d bins\n"),
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whoami, --i, hist_num_bins);
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done (1);
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}
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hist_sample[i] += bfd_get_16 (core_bfd, (bfd_byte *) raw_bin_count);
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}
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/* The rest of the file consists of a bunch of
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<from,self,count> tuples. */
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while (gmon_read_raw_arc (ifp, &from_pc, &self_pc, &count) == 0)
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{
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++narcs;
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DBG (SAMPLEDEBUG,
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printf ("[gmon_out_read] frompc 0x%lx selfpc 0x%lx count %lu\n",
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(unsigned long) from_pc, (unsigned long) self_pc, count));
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/* Add this arc. */
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cg_tally (from_pc, self_pc, count);
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}
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fclose (ifp);
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if (hz == HZ_WRONG)
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{
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/* How many ticks per second? If we can't tell, report
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time in ticks. */
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hz = hertz ();
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if (hz == HZ_WRONG)
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{
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hz = 1;
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fprintf (stderr, _("time is in ticks, not seconds\n"));
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}
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}
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}
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else
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{
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fprintf (stderr, _("%s: don't know how to deal with file format %d\n"),
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whoami, file_format);
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done (1);
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}
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if (output_style & STYLE_GMON_INFO)
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{
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printf (_("File `%s' (version %d) contains:\n"),
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filename, gmon_file_version);
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printf (nhist == 1 ?
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_("\t%d histogram record\n") :
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_("\t%d histogram records\n"), nhist);
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printf (narcs == 1 ?
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_("\t%d call-graph record\n") :
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_("\t%d call-graph records\n"), narcs);
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printf (nbbs == 1 ?
|
||
_("\t%d basic-block count record\n") :
|
||
_("\t%d basic-block count records\n"), nbbs);
|
||
first_output = FALSE;
|
||
}
|
||
}
|
||
|
||
|
||
void
|
||
DEFUN (gmon_out_write, (filename), const char *filename)
|
||
{
|
||
FILE *ofp;
|
||
struct gmon_hdr ghdr;
|
||
|
||
ofp = fopen (filename, FOPEN_WB);
|
||
if (!ofp)
|
||
{
|
||
perror (filename);
|
||
done (1);
|
||
}
|
||
|
||
if (file_format == FF_AUTO || file_format == FF_MAGIC)
|
||
{
|
||
/* Write gmon header. */
|
||
|
||
memcpy (&ghdr.cookie[0], GMON_MAGIC, 4);
|
||
bfd_put_32 (core_bfd, GMON_VERSION, (bfd_byte *) ghdr.version);
|
||
|
||
if (fwrite (&ghdr, sizeof (ghdr), 1, ofp) != 1)
|
||
{
|
||
perror (filename);
|
||
done (1);
|
||
}
|
||
|
||
/* Write execution time histogram if we have one. */
|
||
if (gmon_input & INPUT_HISTOGRAM)
|
||
hist_write_hist (ofp, filename);
|
||
|
||
/* Write call graph arcs if we have any. */
|
||
if (gmon_input & INPUT_CALL_GRAPH)
|
||
cg_write_arcs (ofp, filename);
|
||
|
||
/* Write basic-block info if we have it. */
|
||
if (gmon_input & INPUT_BB_COUNTS)
|
||
bb_write_blocks (ofp, filename);
|
||
}
|
||
else if (file_format == FF_BSD || file_format == FF_BSD44)
|
||
{
|
||
UNIT raw_bin_count;
|
||
int i, hdrsize;
|
||
unsigned padsize;
|
||
char pad[3*4];
|
||
Arc *arc;
|
||
Sym *sym;
|
||
|
||
memset (pad, 0, sizeof (pad));
|
||
|
||
hdrsize = 0;
|
||
/* Decide how large the header will be. Use the 4.4BSD format
|
||
header if explicitly specified, or if the profiling rate is
|
||
non-standard. Otherwise, use the old BSD format. */
|
||
if (file_format == FF_BSD44
|
||
|| hz != hertz())
|
||
{
|
||
padsize = 3*4;
|
||
switch (bfd_arch_bits_per_address (core_bfd))
|
||
{
|
||
case 32:
|
||
hdrsize = GMON_HDRSIZE_BSD44_32;
|
||
break;
|
||
|
||
case 64:
|
||
hdrsize = GMON_HDRSIZE_BSD44_64;
|
||
break;
|
||
|
||
default:
|
||
fprintf (stderr,
|
||
_("%s: bits per address has unexpected value of %u\n"),
|
||
whoami, bfd_arch_bits_per_address (core_bfd));
|
||
done (1);
|
||
}
|
||
}
|
||
else
|
||
{
|
||
padsize = 0;
|
||
switch (bfd_arch_bits_per_address (core_bfd))
|
||
{
|
||
case 32:
|
||
hdrsize = GMON_HDRSIZE_OLDBSD_32;
|
||
break;
|
||
|
||
case 64:
|
||
hdrsize = GMON_HDRSIZE_OLDBSD_64;
|
||
/* FIXME: Checking host compiler defines here means that we can't
|
||
use a cross gprof alpha OSF. */
|
||
#if defined(__alpha__) && defined (__osf__)
|
||
padsize = 4;
|
||
#endif
|
||
break;
|
||
|
||
default:
|
||
fprintf (stderr,
|
||
_("%s: bits per address has unexpected value of %u\n"),
|
||
whoami, bfd_arch_bits_per_address (core_bfd));
|
||
done (1);
|
||
}
|
||
}
|
||
|
||
/* Write the parts of the headers that are common to both the
|
||
old BSD and 4.4BSD formats. */
|
||
if (gmon_io_write_vma (ofp, s_lowpc)
|
||
|| gmon_io_write_vma (ofp, s_highpc)
|
||
|| gmon_io_write_32 (ofp, hist_num_bins * sizeof (UNIT) + hdrsize))
|
||
{
|
||
perror (filename);
|
||
done (1);
|
||
}
|
||
|
||
/* Write out the 4.4BSD header bits, if that's what we're using. */
|
||
if (file_format == FF_BSD44
|
||
|| hz != hertz())
|
||
{
|
||
if (gmon_io_write_32 (ofp, GMONVERSION)
|
||
|| gmon_io_write_32 (ofp, hz))
|
||
{
|
||
perror (filename);
|
||
done (1);
|
||
}
|
||
}
|
||
|
||
/* Now write out any necessary padding after the meaningful
|
||
header bits. */
|
||
if (padsize != 0
|
||
&& fwrite (pad, 1, padsize, ofp) != padsize)
|
||
{
|
||
perror (filename);
|
||
done (1);
|
||
}
|
||
|
||
/* Dump the samples. */
|
||
for (i = 0; i < hist_num_bins; ++i)
|
||
{
|
||
bfd_put_16 (core_bfd, hist_sample[i], (bfd_byte *) & raw_bin_count[0]);
|
||
if (fwrite (&raw_bin_count[0], sizeof (raw_bin_count), 1, ofp) != 1)
|
||
{
|
||
perror (filename);
|
||
done (1);
|
||
}
|
||
}
|
||
|
||
/* Dump the normalized raw arc information. */
|
||
for (sym = symtab.base; sym < symtab.limit; ++sym)
|
||
{
|
||
for (arc = sym->cg.children; arc; arc = arc->next_child)
|
||
{
|
||
if (gmon_write_raw_arc (ofp, arc->parent->addr,
|
||
arc->child->addr, arc->count))
|
||
{
|
||
perror (filename);
|
||
done (1);
|
||
}
|
||
DBG (SAMPLEDEBUG,
|
||
printf ("[dumpsum] frompc 0x%lx selfpc 0x%lx count %lu\n",
|
||
(unsigned long) arc->parent->addr,
|
||
(unsigned long) arc->child->addr, arc->count));
|
||
}
|
||
}
|
||
|
||
fclose (ofp);
|
||
}
|
||
else
|
||
{
|
||
fprintf (stderr, _("%s: don't know how to deal with file format %d\n"),
|
||
whoami, file_format);
|
||
done (1);
|
||
}
|
||
}
|