binutils-gdb/gprof/gmon_io.c

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/* gmon_io.c - Input and output from/to gmon.out files.
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Copyright 1999, 2000, 2001, 2002, 2003, 2004, 2005
Free Software Foundation, Inc.
This file is part of GNU Binutils.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
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Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA
02110-1301, USA. */
* alpha.c (alpha_Instruction): Don't use. (alpha_find_call): Avoid use of bitfields and casts between pointers and integers of different sizes. Avoid endian problems when cross-compiling. * vax.c (vax_find_call): Likewise. (struct modebyte): Don't use. (vax_operandmode): Pass in an unsigned char *. (vax_operandlength): Likewise. (vax_reladdr): Rename to vax_offset and return relative offset rather than address. * i386.c (i386_find_call): Avoid casts between pointers and integers of different sizes. * sparc.c (sparc_find_call): Likewise. Avoid endian problems. * tahoe.c (tahoe_find_call): Likewise. (tahoe_reladdr): Rename to tahoe_offset and return relative offset rather than address. * basic_blocks.h: Don't include headers here. * call_graph.h: Likewise. * cg_arcs.h: Likewise. * cg_print.h: Likewise. * corefile.h: Likewise. * gmon_io.h: Likewise. * gmon_out.h: Likewise. * hertz.h: Likewise. * hist.h: Likewise. * source.h: Likewise. * sym_ids.h: Likewise. * symtab.h: Likewise. * gprof.h: Don't include ansidecl.h, do include bfd.h. (bool): Don't typedef. * alpha.c: Adjust #include's for above header changes. * basic_blocks.c: Likewise. * call_graph.c: Likewise. * cg_arcs.c: Likewise. * cg_dfn.c: Likewise. * cg_print.c: Likewise. * corefile.c: Likewise. * gmon_io.c: Likewise. * gprof.c: Likewise. * hertz.c: Likewise. * hist.c: Likewise. * i386.c: Likewise. * mips.c: Likewise. * sparc.c: Likewise. * sym_ids.c: Likewise. * symtab.c: Likewise. * tahoe.c: Likewise. * utils.c: Likewise. * vax.c: Likewise. * po/POTFILES.in: Regenerate.
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#include "gprof.h"
#include "search_list.h"
#include "source.h"
#include "symtab.h"
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#include "cg_arcs.h"
#include "basic_blocks.h"
#include "corefile.h"
#include "call_graph.h"
#include "gmon_io.h"
#include "gmon_out.h"
#include "gmon.h" /* Fetch header for old format. */
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#include "hertz.h"
#include "hist.h"
#include "libiberty.h"
enum gmon_ptr_size {
ptr_32bit,
ptr_64bit
};
enum gmon_ptr_signedness {
ptr_signed,
ptr_unsigned
};
static enum gmon_ptr_size gmon_get_ptr_size (void);
static enum gmon_ptr_signedness gmon_get_ptr_signedness (void);
#ifdef BFD_HOST_U_64_BIT
static int gmon_io_read_64 (FILE *, BFD_HOST_U_64_BIT *);
static int gmon_io_write_64 (FILE *, BFD_HOST_U_64_BIT);
#endif
static int gmon_read_raw_arc
(FILE *, bfd_vma *, bfd_vma *, unsigned long *);
static int gmon_write_raw_arc
(FILE *, bfd_vma, bfd_vma, unsigned long);
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int gmon_input = 0;
int gmon_file_version = 0; /* 0 == old (non-versioned) file format. */
static enum gmon_ptr_size
gmon_get_ptr_size ()
{
int size;
/* Pick best size for pointers. Start with the ELF size, and if not
elf go with the architecture's address size. */
size = bfd_get_arch_size (core_bfd);
if (size == -1)
size = bfd_arch_bits_per_address (core_bfd);
switch (size)
{
case 32:
return ptr_32bit;
case 64:
return ptr_64bit;
default:
fprintf (stderr, _("%s: address size has unexpected value of %u\n"),
whoami, size);
done (1);
}
}
static enum gmon_ptr_signedness
gmon_get_ptr_signedness ()
{
int sext;
/* Figure out whether to sign extend. If BFD doesn't know, assume no. */
sext = bfd_get_sign_extend_vma (core_bfd);
if (sext == -1)
return ptr_unsigned;
return (sext ? ptr_signed : ptr_unsigned);
}
int
gmon_io_read_32 (FILE *ifp, unsigned int *valp)
{
char buf[4];
if (fread (buf, 1, 4, ifp) != 4)
return 1;
*valp = bfd_get_32 (core_bfd, buf);
return 0;
}
#ifdef BFD_HOST_U_64_BIT
static int
gmon_io_read_64 (FILE *ifp, BFD_HOST_U_64_BIT *valp)
{
char buf[8];
if (fread (buf, 1, 8, ifp) != 8)
return 1;
*valp = bfd_get_64 (core_bfd, buf);
return 0;
}
#endif
int
gmon_io_read_vma (FILE *ifp, bfd_vma *valp)
{
unsigned int val32;
#ifdef BFD_HOST_U_64_BIT
BFD_HOST_U_64_BIT val64;
#endif
switch (gmon_get_ptr_size ())
{
case ptr_32bit:
if (gmon_io_read_32 (ifp, &val32))
return 1;
if (gmon_get_ptr_signedness () == ptr_signed)
*valp = (int) val32;
else
*valp = val32;
break;
#ifdef BFD_HOST_U_64_BIT
case ptr_64bit:
if (gmon_io_read_64 (ifp, &val64))
return 1;
#ifdef BFD_HOST_64_BIT
if (gmon_get_ptr_signedness () == ptr_signed)
*valp = (BFD_HOST_64_BIT) val64;
else
#endif
*valp = val64;
break;
#endif
}
return 0;
}
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int
gmon_io_read (FILE *ifp, char *buf, size_t n)
{
if (fread (buf, 1, n, ifp) != n)
return 1;
return 0;
}
int
gmon_io_write_32 (FILE *ofp, unsigned int val)
{
char buf[4];
bfd_put_32 (core_bfd, (bfd_vma) val, buf);
if (fwrite (buf, 1, 4, ofp) != 4)
return 1;
return 0;
}
#ifdef BFD_HOST_U_64_BIT
static int
gmon_io_write_64 (FILE *ofp, BFD_HOST_U_64_BIT val)
{
char buf[8];
bfd_put_64 (core_bfd, (bfd_vma) val, buf);
if (fwrite (buf, 1, 8, ofp) != 8)
return 1;
return 0;
}
#endif
int
gmon_io_write_vma (FILE *ofp, bfd_vma val)
{
switch (gmon_get_ptr_size ())
{
case ptr_32bit:
if (gmon_io_write_32 (ofp, (unsigned int) val))
return 1;
break;
#ifdef BFD_HOST_U_64_BIT
case ptr_64bit:
if (gmon_io_write_64 (ofp, (BFD_HOST_U_64_BIT) val))
return 1;
break;
#endif
}
return 0;
}
int
gmon_io_write_8 (FILE *ofp, unsigned int val)
{
char buf[1];
bfd_put_8 (core_bfd, val, buf);
if (fwrite (buf, 1, 1, ofp) != 1)
return 1;
return 0;
}
int
gmon_io_write (FILE *ofp, char *buf, size_t n)
{
if (fwrite (buf, 1, n, ofp) != n)
return 1;
return 0;
}
static int
gmon_read_raw_arc (FILE *ifp, bfd_vma *fpc, bfd_vma *spc, unsigned long *cnt)
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{
#ifdef BFD_HOST_U_64_BIT
BFD_HOST_U_64_BIT cnt64;
#endif
unsigned int cnt32;
if (gmon_io_read_vma (ifp, fpc)
|| gmon_io_read_vma (ifp, spc))
return 1;
switch (gmon_get_ptr_size ())
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{
case ptr_32bit:
if (gmon_io_read_32 (ifp, &cnt32))
return 1;
*cnt = cnt32;
break;
#ifdef BFD_HOST_U_64_BIT
case ptr_64bit:
if (gmon_io_read_64 (ifp, &cnt64))
return 1;
*cnt = cnt64;
break;
#endif
default:
return 1;
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}
return 0;
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}
static int
gmon_write_raw_arc (FILE *ofp, bfd_vma fpc, bfd_vma spc, unsigned long cnt)
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{
if (gmon_io_write_vma (ofp, fpc)
|| gmon_io_write_vma (ofp, spc))
return 1;
switch (gmon_get_ptr_size ())
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{
case ptr_32bit:
if (gmon_io_write_32 (ofp, (unsigned int) cnt))
return 1;
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break;
#ifdef BFD_HOST_U_64_BIT
case ptr_64bit:
if (gmon_io_write_64 (ofp, (BFD_HOST_U_64_BIT) cnt))
return 1;
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break;
#endif
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}
return 0;
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}
void
gmon_out_read (const char *filename)
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{
FILE *ifp;
struct gmon_hdr ghdr;
unsigned char tag;
int nhist = 0, narcs = 0, nbbs = 0;
/* Open gmon.out file. */
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if (strcmp (filename, "-") == 0)
{
ifp = stdin;
#ifdef SET_BINARY
SET_BINARY (fileno (stdin));
#endif
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}
else
{
ifp = fopen (filename, FOPEN_RB);
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if (!ifp)
{
perror (filename);
done (1);
}
}
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if (fread (&ghdr, sizeof (struct gmon_hdr), 1, ifp) != 1)
{
fprintf (stderr, _("%s: file too short to be a gmon file\n"),
filename);
done (1);
}
if ((file_format == FF_MAGIC)
|| (file_format == FF_AUTO && !strncmp (&ghdr.cookie[0], GMON_MAGIC, 4)))
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{
if (file_format == FF_MAGIC && strncmp (&ghdr.cookie[0], GMON_MAGIC, 4))
{
fprintf (stderr, _("%s: file `%s' has bad magic cookie\n"),
whoami, filename);
done (1);
}
/* 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)
{
fprintf (stderr,
_("%s: file `%s' has unsupported version %d\n"),
whoami, filename, gmon_file_version);
done (1);
}
/* Read in all the records. */
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while (fread (&tag, sizeof (tag), 1, ifp) == 1)
{
switch (tag)
{
case GMON_TAG_TIME_HIST:
++nhist;
gmon_input |= INPUT_HISTOGRAM;
hist_read_rec (ifp, filename);
break;
case GMON_TAG_CG_ARC:
++narcs;
gmon_input |= INPUT_CALL_GRAPH;
cg_read_rec (ifp, filename);
break;
case GMON_TAG_BB_COUNT:
++nbbs;
gmon_input |= INPUT_BB_COUNTS;
bb_read_rec (ifp, filename);
break;
default:
fprintf (stderr,
_("%s: %s: found bad tag %d (file corrupted?)\n"),
whoami, filename, tag);
done (1);
}
}
}
else if (file_format == FF_AUTO
|| file_format == FF_BSD
|| file_format == FF_BSD44)
{
struct hdr
{
bfd_vma low_pc;
bfd_vma high_pc;
unsigned int ncnt;
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};
unsigned int i;
int samp_bytes, header_size = 0;
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unsigned long count;
bfd_vma from_pc, self_pc;
static struct hdr h;
UNIT raw_bin_count;
struct hdr tmp;
unsigned int version;
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/* Information from a gmon.out file is in two parts: an array of
sampling hits within pc ranges, and the arcs. */
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gmon_input = INPUT_HISTOGRAM | INPUT_CALL_GRAPH;
/* This fseek() ought to work even on stdin as long as it's
not an interactive device (heck, is there anybody who would
want to type in a gmon.out at the terminal?). */
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if (fseek (ifp, 0, SEEK_SET) < 0)
{
perror (filename);
done (1);
}
/* The beginning of the old BSD header and the 4.4BSD header
are the same: lowpc, highpc, ncnt */
if (gmon_io_read_vma (ifp, &tmp.low_pc)
|| gmon_io_read_vma (ifp, &tmp.high_pc)
|| gmon_io_read_32 (ifp, &tmp.ncnt))
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{
bad_gmon_file:
fprintf (stderr, _("%s: file too short to be a gmon file\n"),
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filename);
done (1);
}
/* Check to see if this a 4.4BSD-style header. */
if (gmon_io_read_32 (ifp, &version))
goto bad_gmon_file;
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if (version == GMONVERSION)
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{
unsigned int profrate;
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/* 4.4BSD format header. */
if (gmon_io_read_32 (ifp, &profrate))
goto bad_gmon_file;
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if (!s_highpc)
hz = profrate;
else if (hz != (int) profrate)
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{
fprintf (stderr,
_("%s: profiling rate incompatible with first gmon file\n"),
filename);
done (1);
}
switch (gmon_get_ptr_size ())
{
case ptr_32bit:
header_size = GMON_HDRSIZE_BSD44_32;
break;
case ptr_64bit:
header_size = GMON_HDRSIZE_BSD44_64;
break;
}
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}
else
{
/* Old style BSD format. */
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if (file_format == FF_BSD44)
{
fprintf (stderr, _("%s: file `%s' has bad magic cookie\n"),
whoami, filename);
done (1);
}
switch (gmon_get_ptr_size ())
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{
case ptr_32bit:
header_size = GMON_HDRSIZE_OLDBSD_32;
break;
case ptr_64bit:
header_size = GMON_HDRSIZE_OLDBSD_64;
break;
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}
}
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/* Position the file to after the header. */
if (fseek (ifp, header_size, SEEK_SET) < 0)
{
perror (filename);
done (1);
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}
if (s_highpc && (tmp.low_pc != h.low_pc
|| tmp.high_pc != h.high_pc || tmp.ncnt != h.ncnt))
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{
fprintf (stderr, _("%s: incompatible with first gmon file\n"),
filename);
done (1);
}
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h = tmp;
s_lowpc = (bfd_vma) h.low_pc;
s_highpc = (bfd_vma) h.high_pc;
lowpc = (bfd_vma) h.low_pc / sizeof (UNIT);
highpc = (bfd_vma) h.high_pc / sizeof (UNIT);
samp_bytes = h.ncnt - header_size;
hist_num_bins = samp_bytes / sizeof (UNIT);
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DBG (SAMPLEDEBUG,
printf ("[gmon_out_read] lowpc 0x%lx highpc 0x%lx ncnt %d\n",
(unsigned long) h.low_pc, (unsigned long) h.high_pc,
h.ncnt);
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printf ("[gmon_out_read] s_lowpc 0x%lx s_highpc 0x%lx\n",
(unsigned long) s_lowpc, (unsigned long) s_highpc);
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printf ("[gmon_out_read] lowpc 0x%lx highpc 0x%lx\n",
(unsigned long) lowpc, (unsigned long) highpc);
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printf ("[gmon_out_read] samp_bytes %d hist_num_bins %d\n",
samp_bytes, hist_num_bins));
/* Make sure that we have sensible values. */
if (samp_bytes < 0 || lowpc > highpc)
{
fprintf (stderr,
_("%s: file '%s' does not appear to be in gmon.out format\n"),
whoami, filename);
done (1);
}
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if (hist_num_bins)
++nhist;
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if (!hist_sample)
{
hist_sample =
(int *) xmalloc (hist_num_bins * sizeof (hist_sample[0]));
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memset (hist_sample, 0, hist_num_bins * sizeof (hist_sample[0]));
}
for (i = 0; i < hist_num_bins; ++i)
{
if (fread (raw_bin_count, sizeof (raw_bin_count), 1, ifp) != 1)
{
fprintf (stderr,
_("%s: unexpected EOF after reading %d/%d bins\n"),
whoami, --i, hist_num_bins);
done (1);
}
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hist_sample[i] += bfd_get_16 (core_bfd, (bfd_byte *) raw_bin_count);
}
/* The rest of the file consists of a bunch of
<from,self,count> tuples. */
while (gmon_read_raw_arc (ifp, &from_pc, &self_pc, &count) == 0)
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{
++narcs;
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DBG (SAMPLEDEBUG,
printf ("[gmon_out_read] frompc 0x%lx selfpc 0x%lx count %lu\n",
(unsigned long) from_pc, (unsigned long) self_pc, count));
/* Add this arc. */
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cg_tally (from_pc, self_pc, count);
}
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fclose (ifp);
if (hz == HZ_WRONG)
{
/* How many ticks per second? If we can't tell, report
time in ticks. */
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hz = hertz ();
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if (hz == HZ_WRONG)
{
hz = 1;
fprintf (stderr, _("time is in ticks, not seconds\n"));
}
}
}
else
{
fprintf (stderr, _("%s: don't know how to deal with file format %d\n"),
whoami, file_format);
done (1);
}
if (output_style & STYLE_GMON_INFO)
{
printf (_("File `%s' (version %d) contains:\n"),
filename, gmon_file_version);
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printf (nhist == 1 ?
_("\t%d histogram record\n") :
_("\t%d histogram records\n"), nhist);
printf (narcs == 1 ?
_("\t%d call-graph record\n") :
_("\t%d call-graph records\n"), narcs);
printf (nbbs == 1 ?
_("\t%d basic-block count record\n") :
_("\t%d basic-block count records\n"), nbbs);
first_output = FALSE;
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}
}
void
gmon_out_write (const char *filename)
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{
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. */
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memcpy (&ghdr.cookie[0], GMON_MAGIC, 4);
bfd_put_32 (core_bfd, (bfd_vma) GMON_VERSION, (bfd_byte *) ghdr.version);
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if (fwrite (&ghdr, sizeof (ghdr), 1, ofp) != 1)
{
perror (filename);
done (1);
}
/* Write execution time histogram if we have one. */
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if (gmon_input & INPUT_HISTOGRAM)
hist_write_hist (ofp, filename);
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/* Write call graph arcs if we have any. */
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if (gmon_input & INPUT_CALL_GRAPH)
cg_write_arcs (ofp, filename);
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/* Write basic-block info if we have it. */
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if (gmon_input & INPUT_BB_COUNTS)
bb_write_blocks (ofp, filename);
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}
else if (file_format == FF_BSD || file_format == FF_BSD44)
{
UNIT raw_bin_count;
unsigned int i, hdrsize;
unsigned padsize;
char pad[3*4];
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Arc *arc;
Sym *sym;
memset (pad, 0, sizeof (pad));
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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. */
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if (file_format == FF_BSD44
|| hz != hertz())
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{
padsize = 3*4;
switch (gmon_get_ptr_size ())
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{
case ptr_32bit:
hdrsize = GMON_HDRSIZE_BSD44_32;
break;
case ptr_64bit:
hdrsize = GMON_HDRSIZE_BSD44_64;
break;
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}
}
else
{
padsize = 0;
switch (gmon_get_ptr_size ())
{
case ptr_32bit:
hdrsize = GMON_HDRSIZE_OLDBSD_32;
break;
case ptr_64bit:
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;
}
}
/* 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, (unsigned int) hz))
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{
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. */
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for (i = 0; i < hist_num_bins; ++i)
{
bfd_put_16 (core_bfd, (bfd_vma) hist_sample[i],
(bfd_byte *) &raw_bin_count[0]);
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if (fwrite (&raw_bin_count[0], sizeof (raw_bin_count), 1, ofp) != 1)
{
perror (filename);
done (1);
}
}
/* Dump the normalized raw arc information. */
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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))
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{
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));
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}
}
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fclose (ofp);
}
else
{
fprintf (stderr, _("%s: don't know how to deal with file format %d\n"),
whoami, file_format);
done (1);
}
}