9bc6c7219a
FreeBSD has used ELF binaries/libraries for decades, but still has some support for legacy a.out binaries. Portions of this have been retired over time, but support remained in ldd, ldconfig, and gprof. Retire gprof support; if anyone needs to do development on a.out binaries still they will be best served by installing a full FreeBSD 2.x or other obsolete version in a jail. Kernel support for executing a.out binaries is unchnaged. Sponsored by: The FreeBSD Foundation Differential Revision: https://reviews.freebsd.org/D27480
328 lines
11 KiB
C
328 lines
11 KiB
C
/*-
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* SPDX-License-Identifier: BSD-3-Clause
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*
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* Copyright (c) 1983, 1993
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* The Regents of the University of California. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* @(#)gprof.h 8.1 (Berkeley) 6/6/93
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* $FreeBSD$
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*/
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <sys/gmon.h>
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#include <stdio.h>
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#include <stdlib.h>
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/*
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* offset (in bytes) of the code from the entry address of a routine.
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* (see asgnsamples for use and explanation.)
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*/
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#define OFFSET_OF_CODE 0
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enum opermodes { dummy };
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typedef enum opermodes operandenum;
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/*
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* booleans
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*/
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typedef int bool;
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#define FALSE 0
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#define TRUE 1
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/*
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* Historical scale factor in profil(2)'s algorithm for converting
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* pc addresses to bucket numbers. This now just complicates the
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* scaling and makes bucket:pc densities of more than 1/2 useless.
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*/
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#define HISTORICAL_SCALE_2 2
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#ifndef EXTERN
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#define EXTERN extern
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#endif
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/*
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* ticks per second
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*/
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EXTERN long hz;
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EXTERN size_t histcounter_size;
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EXTERN int histcounter_type;
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EXTERN char *a_outname;
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#define A_OUTNAME "a.out"
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EXTERN char *gmonname;
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#define GMONSUM "gmon.sum"
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/*
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* a constructed arc,
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* with pointers to the namelist entry of the parent and the child,
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* a count of how many times this arc was traversed,
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* and pointers to the next parent of this child and
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* the next child of this parent.
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*/
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struct arcstruct {
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struct nl *arc_parentp; /* pointer to parent's nl entry */
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struct nl *arc_childp; /* pointer to child's nl entry */
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long arc_count; /* num calls from parent to child */
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double arc_time; /* time inherited along arc */
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double arc_childtime; /* childtime inherited along arc */
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struct arcstruct *arc_parentlist; /* parents-of-this-child list */
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struct arcstruct *arc_childlist; /* children-of-this-parent list */
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struct arcstruct *arc_next; /* list of arcs on cycle */
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unsigned short arc_cyclecnt; /* num cycles involved in */
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unsigned short arc_flags; /* see below */
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};
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typedef struct arcstruct arctype;
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/*
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* arc flags
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*/
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#define DEADARC 0x01 /* time should not propagate across the arc */
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#define ONLIST 0x02 /* arc is on list of arcs in cycles */
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/*
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* The symbol table;
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* for each external in the specified file we gather
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* its address, the number of calls and compute its share of CPU time.
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*/
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struct nl {
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const char *name; /* the name */
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unsigned long value; /* the pc entry point */
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unsigned long svalue; /* entry point aligned to histograms */
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double time; /* ticks in this routine */
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double childtime; /* cumulative ticks in children */
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long ncall; /* how many times called */
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long npropcall; /* times called by live arcs */
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long selfcalls; /* how many calls to self */
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double propfraction; /* what % of time propagates */
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double propself; /* how much self time propagates */
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double propchild; /* how much child time propagates */
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short printflag; /* should this be printed? */
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short flags; /* see below */
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int index; /* index in the graph list */
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int toporder; /* graph call chain top-sort order */
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int cycleno; /* internal number of cycle on */
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int parentcnt; /* number of live parent arcs */
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struct nl *cyclehead; /* pointer to head of cycle */
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struct nl *cnext; /* pointer to next member of cycle */
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arctype *parents; /* list of caller arcs */
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arctype *children; /* list of callee arcs */
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};
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typedef struct nl nltype;
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EXTERN nltype *nl; /* the whole namelist */
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EXTERN nltype *npe; /* the virtual end of the namelist */
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EXTERN int nname; /* the number of function names */
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#define HASCYCLEXIT 0x08 /* node has arc exiting from cycle */
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#define CYCLEHEAD 0x10 /* node marked as head of a cycle */
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#define VISITED 0x20 /* node visited during a cycle */
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/*
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* The cycle list.
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* for each subcycle within an identified cycle, we gather
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* its size and the list of included arcs.
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*/
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struct cl {
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int size; /* length of cycle */
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struct cl *next; /* next member of list */
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arctype *list[1]; /* list of arcs in cycle */
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/* actually longer */
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};
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typedef struct cl cltype;
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EXTERN arctype *archead; /* the head of arcs in current cycle list */
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EXTERN cltype *cyclehead; /* the head of the list */
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EXTERN int cyclecnt; /* the number of cycles found */
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#define CYCLEMAX 100 /* maximum cycles before cutting one of them */
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/*
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* flag which marks a nl entry as topologically ``busy''
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* flag which marks a nl entry as topologically ``not_numbered''
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*/
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#define DFN_BUSY -1
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#define DFN_NAN 0
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/*
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* namelist entries for cycle headers.
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* the number of discovered cycles.
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*/
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EXTERN nltype *cyclenl; /* cycle header namelist */
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EXTERN int ncycle; /* number of cycles discovered */
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/*
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* The header on the gmon.out file.
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* gmon.out consists of a struct phdr (defined in gmon.h)
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* and then an array of ncnt samples representing the
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* discretized program counter values.
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*
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* Backward compatible old style header
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*/
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struct ophdr {
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u_short *lpc;
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u_short *hpc;
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int ncnt;
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};
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EXTERN int debug;
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/*
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* Each discretized pc sample has
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* a count of the number of samples in its range
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*/
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EXTERN double *samples;
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EXTERN unsigned long s_lowpc; /* lowpc from the profile file */
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EXTERN unsigned long s_highpc; /* highpc from the profile file */
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/* range profiled, in historical units */
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EXTERN unsigned long lowpc, highpc;
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EXTERN unsigned sampbytes; /* number of bytes of samples */
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EXTERN int nsamples; /* number of samples */
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/* accumulated time thus far for putprofline */
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EXTERN double actime;
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EXTERN double totime; /* total time for all routines */
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EXTERN double printtime; /* total of time being printed */
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EXTERN double scale; /* scale factor converting samples to pc
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values: each sample covers scale bytes */
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EXTERN unsigned char *textspace; /* text space of a.out in core */
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/* with -C, minimum cycle size to ignore */
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EXTERN int cyclethreshold;
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/*
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* option flags, from a to z.
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*/
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EXTERN bool aflag; /* suppress static functions */
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EXTERN bool bflag; /* blurbs, too */
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EXTERN bool Cflag; /* find cut-set to eliminate cycles */
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EXTERN bool dflag; /* debugging options */
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EXTERN bool eflag; /* specific functions excluded */
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EXTERN bool Eflag; /* functions excluded with time */
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EXTERN bool fflag; /* specific functions requested */
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EXTERN bool Fflag; /* functions requested with time */
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EXTERN bool kflag; /* arcs to be deleted */
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EXTERN bool Kflag; /* use the running kernel for symbols */
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EXTERN bool sflag; /* sum multiple gmon.out files */
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EXTERN bool uflag; /* suppress symbols hidden from C */
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EXTERN bool zflag; /* zero time/called functions, too */
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/*
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* structure for various string lists
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*/
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struct stringlist {
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struct stringlist *next;
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char *string;
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};
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extern struct stringlist *elist;
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extern struct stringlist *Elist;
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extern struct stringlist *flist;
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extern struct stringlist *Flist;
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extern struct stringlist *kfromlist;
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extern struct stringlist *ktolist;
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/*
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* function declarations
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*/
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void addarc(nltype *, nltype *, long);
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bool addcycle(arctype **, arctype **);
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void addlist(struct stringlist *, char *);
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void alignentries(void);
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int arccmp(arctype *, arctype *);
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arctype *arclookup(nltype *, nltype *);
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void asgnsamples(void);
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void compresslist(void);
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bool cycleanalyze(void);
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void cyclelink(void);
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void cycletime(void);
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bool descend(nltype *, arctype **, arctype **);
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void dfn(nltype *);
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bool dfn_busy(nltype *);
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void dfn_findcycle(nltype *);
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void dfn_init(void);
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bool dfn_numbered(nltype *);
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void dfn_post_visit(nltype *);
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void dfn_pre_visit(nltype *);
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void dfn_self_cycle(nltype *);
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nltype **doarcs(void);
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void doflags(void);
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void dotime(void);
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void dumpsum(const char *);
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int elf_getnfile(const char *, char ***);
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void flatprofheader(void);
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void flatprofline(nltype *);
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void getpfile(char *);
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void gprofheader(void);
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void gprofline(register nltype *);
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int hertz(void);
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void inheritflags(nltype *);
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int kernel_getnfile(const char *, char ***);
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/*
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main();
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*/
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unsigned long max(unsigned long, unsigned long);
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int membercmp(nltype *, nltype *);
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unsigned long min(unsigned long, unsigned long);
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nltype *nllookup(unsigned long);
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bool onlist(struct stringlist *, const char *);
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FILE *openpfile(char *);
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void printblurb(const char *);
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void printchildren(nltype *);
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void printcycle(nltype *);
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void printgprof(nltype **);
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void printindex(void);
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void printmembers(nltype *);
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void printname(nltype *);
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void printparents(nltype *);
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void printprof(void);
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void printsubcycle(cltype *);
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void readsamples(FILE *);
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void sortchildren(nltype *);
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void sortmembers(nltype *);
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void sortparents(nltype *);
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void tally(struct rawarc *);
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void timepropagate(nltype *);
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int totalcmp(const void *, const void *);
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#define LESSTHAN -1
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#define EQUALTO 0
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#define GREATERTHAN 1
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#define DFNDEBUG 1
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#define CYCLEDEBUG 2
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#define ARCDEBUG 4
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#define TALLYDEBUG 8
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#define TIMEDEBUG 16
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#define SAMPLEDEBUG 32
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#define CALLDEBUG 128
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#define LOOKUPDEBUG 256
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#define PROPDEBUG 512
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#define BREAKCYCLE 1024
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#define SUBCYCLELIST 2048
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#define ANYDEBUG 4096
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