b3296dc54c
(histograms, num_histograms): New. * hist.c (find_histogram, find_histogram_for_pc) (read_histogram_header): New. (s_lowpc, s_highpc, lowpc, highpc, hist_num_bins) (hist_sample): Remove. (hist_read_rec): Use the above, and handle multiple histogram records with disjoint address ranges. (hist_write_hist): Support several histogram records. (scale_and_align_entries): Adjust for multiple histograms. (hist_assign_samples_1): New. (hist_assign_samples): Use the above. (hist_clip_symbol_address): New. * hist.h (hist_check_address) (hist_clip_symbol_address): Declare. * gmon_io.c (gmon_out_read, gmon_out_write): Adjust handling of legacy format for multiple histogram changes. * corefile.c (find_call): Check for core_text_space and clip symbol address range here. * vax.c (vax_find_call): Don't check for core_text_space, or clip the symbol's address range here. Use hist_check_address to check call's target address. * sparc.c: Likewise. * tahoe.c: Likewise. * i386.c: Likewise. * mips.c: Likewise. Also use core_text_sect->vma as the base address for code accesses, just like other machine-specific routines do. * gprof.texi: Adjust for the new logic.
100 lines
3.2 KiB
C
100 lines
3.2 KiB
C
/*
|
|
* Copyright (c) 1983, 1993, 2001
|
|
* The Regents of the University of California. All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
* 3. Neither the name of the University nor the names of its contributors
|
|
* may be used to endorse or promote products derived from this software
|
|
* without specific prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
|
|
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
|
|
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
|
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
* SUCH DAMAGE.
|
|
*/
|
|
#include "gprof.h"
|
|
#include "search_list.h"
|
|
#include "source.h"
|
|
#include "symtab.h"
|
|
#include "cg_arcs.h"
|
|
#include "corefile.h"
|
|
#include "hist.h"
|
|
|
|
static int i386_iscall (unsigned char *);
|
|
void i386_find_call (Sym *, bfd_vma, bfd_vma);
|
|
|
|
static int
|
|
i386_iscall (unsigned char *ip)
|
|
{
|
|
if (*ip == 0xe8)
|
|
return 1;
|
|
return 0;
|
|
}
|
|
|
|
|
|
void
|
|
i386_find_call (Sym *parent, bfd_vma p_lowpc, bfd_vma p_highpc)
|
|
{
|
|
unsigned char *instructp;
|
|
Sym *child;
|
|
bfd_vma pc, destpc;
|
|
|
|
DBG (CALLDEBUG, printf ("[findcall] %s: 0x%lx to 0x%lx\n",
|
|
parent->name, (unsigned long) p_lowpc,
|
|
(unsigned long) p_highpc));
|
|
|
|
for (pc = p_lowpc; pc < p_highpc; ++pc)
|
|
{
|
|
instructp = (unsigned char *) core_text_space + pc - core_text_sect->vma;
|
|
if (i386_iscall (instructp))
|
|
{
|
|
DBG (CALLDEBUG,
|
|
printf ("[findcall]\t0x%lx:call", (unsigned long) pc));
|
|
/*
|
|
* regular pc relative addressing
|
|
* check that this is the address of
|
|
* a function.
|
|
*/
|
|
|
|
destpc = bfd_get_32 (core_bfd, instructp + 1) + pc + 5;
|
|
if (hist_check_address (destpc))
|
|
{
|
|
child = sym_lookup (&symtab, destpc);
|
|
if (child && child->addr == destpc)
|
|
{
|
|
/*
|
|
* a hit
|
|
*/
|
|
DBG (CALLDEBUG,
|
|
printf ("\tdestpc 0x%lx (%s)\n",
|
|
(unsigned long) destpc, child->name));
|
|
arc_add (parent, child, (unsigned long) 0);
|
|
instructp += 4; /* call is a 5 byte instruction */
|
|
continue;
|
|
}
|
|
}
|
|
/*
|
|
* else:
|
|
* it looked like a callf, but it:
|
|
* a) wasn't actually a callf, or
|
|
* b) didn't point to a known function in the symtab, or
|
|
* c) something funny is going on.
|
|
*/
|
|
DBG (CALLDEBUG, printf ("\tbut it's a botch\n"));
|
|
}
|
|
}
|
|
}
|