/*-
|
/*-
|
* Copyright (c) 1991 The Regents of the University of California.
|
* Copyright (c) 1991 The Regents of the University of California.
|
* All rights reserved.
|
* All rights reserved.
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*
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*
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* Redistribution and use in source and binary forms, with or without
|
* Redistribution and use in source and binary forms, with or without
|
* modification, are permitted provided that the following conditions
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* modification, are permitted provided that the following conditions
|
* are met:
|
* are met:
|
* 1. Redistributions of source code must retain the above copyright
|
* 1. Redistributions of source code must retain the above copyright
|
* notice, this list of conditions and the following disclaimer.
|
* notice, this list of conditions and the following disclaimer.
|
* 2. Redistributions in binary form must reproduce the above copyright
|
* 2. Redistributions in binary form must reproduce the above copyright
|
* notice, this list of conditions and the following disclaimer in the
|
* notice, this list of conditions and the following disclaimer in the
|
* documentation and/or other materials provided with the distribution.
|
* documentation and/or other materials provided with the distribution.
|
* 3. [rescinded 22 July 1999]
|
* 3. [rescinded 22 July 1999]
|
* 4. Neither the name of the University nor the names of its contributors
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* 4. Neither the name of the University nor the names of its contributors
|
* may be used to endorse or promote products derived from this software
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* may be used to endorse or promote products derived from this software
|
* without specific prior written permission.
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* without specific prior written permission.
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*
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
|
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
|
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
|
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
|
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
* 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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* 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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* 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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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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* SUCH DAMAGE.
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*/
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*/
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|
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/*
|
/*
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* This is a modified gmon.c by J.W.Hawtin <oolon@ankh.org>,
|
* This is a modified gmon.c by J.W.Hawtin <oolon@ankh.org>,
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* 14/8/96 based on the original gmon.c in GCC and the hacked version
|
* 14/8/96 based on the original gmon.c in GCC and the hacked version
|
* solaris 2 sparc version (config/sparc/gmon-sol.c) by Mark Eichin. To do
|
* solaris 2 sparc version (config/sparc/gmon-sol.c) by Mark Eichin. To do
|
* process profiling on solaris 2.X X86
|
* process profiling on solaris 2.X X86
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*
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*
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* It must be used in conjunction with sol2-gc1.asm, which is used to start
|
* It must be used in conjunction with sol2-gc1.asm, which is used to start
|
* and stop process monitoring.
|
* and stop process monitoring.
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*
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*
|
* Differences.
|
* Differences.
|
*
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*
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* On Solaris 2 _mcount is called by library functions not mcount, so support
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* On Solaris 2 _mcount is called by library functions not mcount, so support
|
* has been added for both.
|
* has been added for both.
|
*
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*
|
* Also the prototype for profil() is different
|
* Also the prototype for profil() is different
|
*
|
*
|
* Solaris 2 does not seem to have char *minbrk whcih allows the setting of
|
* Solaris 2 does not seem to have char *minbrk whcih allows the setting of
|
* the minimum SBRK region so this code has been removed and lets pray malloc
|
* the minimum SBRK region so this code has been removed and lets pray malloc
|
* does not mess it up.
|
* does not mess it up.
|
*
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*
|
* Notes
|
* Notes
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*
|
*
|
* This code could easily be integrated with the original gmon.c and perhaps
|
* This code could easily be integrated with the original gmon.c and perhaps
|
* should be.
|
* should be.
|
*/
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*/
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#include "tconfig.h"
|
#include "tconfig.h"
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#include "tsystem.h"
|
#include "tsystem.h"
|
#include <fcntl.h> /* for creat() */
|
#include <fcntl.h> /* for creat() */
|
|
|
#ifdef DEBUG
|
#ifdef DEBUG
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#include <stdio.h>
|
#include <stdio.h>
|
#endif
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#endif
|
|
|
static void moncontrol (int);
|
static void moncontrol (int);
|
extern void monstartup (char *, char *);
|
extern void monstartup (char *, char *);
|
extern void _mcleanup (void);
|
extern void _mcleanup (void);
|
extern void internal_mcount (void);
|
extern void internal_mcount (void);
|
|
|
|
|
struct phdr {
|
struct phdr {
|
char *lpc;
|
char *lpc;
|
char *hpc;
|
char *hpc;
|
int ncnt;
|
int ncnt;
|
};
|
};
|
|
|
|
|
#define HISTFRACTION 2
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#define HISTFRACTION 2
|
#define HISTCOUNTER unsigned short
|
#define HISTCOUNTER unsigned short
|
#define HASHFRACTION 1
|
#define HASHFRACTION 1
|
#define ARCDENSITY 2
|
#define ARCDENSITY 2
|
#define MINARCS 50
|
#define MINARCS 50
|
#define BASEADDRESS 0x8000000 /* On Solaris 2 X86 all executables start here
|
#define BASEADDRESS 0x8000000 /* On Solaris 2 X86 all executables start here
|
and not at 0 */
|
and not at 0 */
|
|
|
struct tostruct {
|
struct tostruct {
|
char *selfpc;
|
char *selfpc;
|
long count;
|
long count;
|
unsigned short link;
|
unsigned short link;
|
};
|
};
|
|
|
struct rawarc {
|
struct rawarc {
|
unsigned long raw_frompc;
|
unsigned long raw_frompc;
|
unsigned long raw_selfpc;
|
unsigned long raw_selfpc;
|
long raw_count;
|
long raw_count;
|
};
|
};
|
#define ROUNDDOWN(x,y) (((x)/(y))*(y))
|
#define ROUNDDOWN(x,y) (((x)/(y))*(y))
|
#define ROUNDUP(x,y) ((((x)+(y)-1)/(y))*(y))
|
#define ROUNDUP(x,y) ((((x)+(y)-1)/(y))*(y))
|
|
|
/* char *minbrk; */
|
/* char *minbrk; */
|
|
|
/*
|
/*
|
* froms is actually a bunch of unsigned shorts indexing tos
|
* froms is actually a bunch of unsigned shorts indexing tos
|
*/
|
*/
|
static int profiling = 3;
|
static int profiling = 3;
|
static unsigned short *froms;
|
static unsigned short *froms;
|
static struct tostruct *tos = 0;
|
static struct tostruct *tos = 0;
|
static long tolimit = 0;
|
static long tolimit = 0;
|
static char *s_lowpc = 0;
|
static char *s_lowpc = 0;
|
static char *s_highpc = 0;
|
static char *s_highpc = 0;
|
static unsigned long s_textsize = 0;
|
static unsigned long s_textsize = 0;
|
|
|
static int ssiz;
|
static int ssiz;
|
static char *sbuf;
|
static char *sbuf;
|
static int s_scale;
|
static int s_scale;
|
/* see profil(2) where this is describe (incorrectly) */
|
/* see profil(2) where this is describe (incorrectly) */
|
#define SCALE_1_TO_1 0x10000L
|
#define SCALE_1_TO_1 0x10000L
|
|
|
#define MSG "No space for profiling buffer(s)\n"
|
#define MSG "No space for profiling buffer(s)\n"
|
|
|
extern int errno;
|
extern int errno;
|
|
|
void
|
void
|
monstartup(char *lowpc, char *highpc)
|
monstartup(char *lowpc, char *highpc)
|
{
|
{
|
int monsize;
|
int monsize;
|
char *buffer;
|
char *buffer;
|
register int o;
|
register int o;
|
|
|
/*
|
/*
|
* round lowpc and highpc to multiples of the density we're using
|
* round lowpc and highpc to multiples of the density we're using
|
* so the rest of the scaling (here and in gprof) stays in ints.
|
* so the rest of the scaling (here and in gprof) stays in ints.
|
*/
|
*/
|
lowpc = (char *)
|
lowpc = (char *)
|
ROUNDDOWN((unsigned long)lowpc, HISTFRACTION*sizeof(HISTCOUNTER));
|
ROUNDDOWN((unsigned long)lowpc, HISTFRACTION*sizeof(HISTCOUNTER));
|
s_lowpc = lowpc;
|
s_lowpc = lowpc;
|
highpc = (char *)
|
highpc = (char *)
|
ROUNDUP((unsigned long)highpc, HISTFRACTION*sizeof(HISTCOUNTER));
|
ROUNDUP((unsigned long)highpc, HISTFRACTION*sizeof(HISTCOUNTER));
|
s_highpc = highpc;
|
s_highpc = highpc;
|
s_textsize = highpc - lowpc;
|
s_textsize = highpc - lowpc;
|
monsize = (s_textsize / HISTFRACTION) + sizeof(struct phdr);
|
monsize = (s_textsize / HISTFRACTION) + sizeof(struct phdr);
|
buffer = (char *) sbrk( monsize );
|
buffer = (char *) sbrk( monsize );
|
if ( buffer == (char *) -1 ) {
|
if ( buffer == (char *) -1 ) {
|
write( 2 , MSG , sizeof(MSG) );
|
write( 2 , MSG , sizeof(MSG) );
|
return;
|
return;
|
}
|
}
|
froms = (unsigned short *) sbrk( s_textsize / HASHFRACTION );
|
froms = (unsigned short *) sbrk( s_textsize / HASHFRACTION );
|
if ( froms == (unsigned short *) -1 ) {
|
if ( froms == (unsigned short *) -1 ) {
|
write( 2 , MSG , sizeof(MSG) );
|
write( 2 , MSG , sizeof(MSG) );
|
froms = 0;
|
froms = 0;
|
return;
|
return;
|
}
|
}
|
tolimit = s_textsize * ARCDENSITY / 100;
|
tolimit = s_textsize * ARCDENSITY / 100;
|
if ( tolimit < MINARCS ) {
|
if ( tolimit < MINARCS ) {
|
tolimit = MINARCS;
|
tolimit = MINARCS;
|
} else if ( tolimit > 65534 ) {
|
} else if ( tolimit > 65534 ) {
|
tolimit = 65534;
|
tolimit = 65534;
|
}
|
}
|
tos = (struct tostruct *) sbrk( tolimit * sizeof( struct tostruct ) );
|
tos = (struct tostruct *) sbrk( tolimit * sizeof( struct tostruct ) );
|
if ( tos == (struct tostruct *) -1 ) {
|
if ( tos == (struct tostruct *) -1 ) {
|
write( 2 , MSG , sizeof(MSG) );
|
write( 2 , MSG , sizeof(MSG) );
|
froms = 0;
|
froms = 0;
|
tos = 0;
|
tos = 0;
|
return;
|
return;
|
}
|
}
|
/* minbrk = (char *) sbrk(0);*/
|
/* minbrk = (char *) sbrk(0);*/
|
tos[0].link = 0;
|
tos[0].link = 0;
|
sbuf = buffer;
|
sbuf = buffer;
|
ssiz = monsize;
|
ssiz = monsize;
|
( (struct phdr *) buffer ) -> lpc = lowpc;
|
( (struct phdr *) buffer ) -> lpc = lowpc;
|
( (struct phdr *) buffer ) -> hpc = highpc;
|
( (struct phdr *) buffer ) -> hpc = highpc;
|
( (struct phdr *) buffer ) -> ncnt = ssiz;
|
( (struct phdr *) buffer ) -> ncnt = ssiz;
|
monsize -= sizeof(struct phdr);
|
monsize -= sizeof(struct phdr);
|
if ( monsize <= 0 )
|
if ( monsize <= 0 )
|
return;
|
return;
|
o = highpc - lowpc;
|
o = highpc - lowpc;
|
if( monsize < o )
|
if( monsize < o )
|
#ifndef hp300
|
#ifndef hp300
|
s_scale = ( (float) monsize / o ) * SCALE_1_TO_1;
|
s_scale = ( (float) monsize / o ) * SCALE_1_TO_1;
|
#else /* avoid floating point */
|
#else /* avoid floating point */
|
{
|
{
|
int quot = o / monsize;
|
int quot = o / monsize;
|
|
|
if (quot >= 0x10000)
|
if (quot >= 0x10000)
|
s_scale = 1;
|
s_scale = 1;
|
else if (quot >= 0x100)
|
else if (quot >= 0x100)
|
s_scale = 0x10000 / quot;
|
s_scale = 0x10000 / quot;
|
else if (o >= 0x800000)
|
else if (o >= 0x800000)
|
s_scale = 0x1000000 / (o / (monsize >> 8));
|
s_scale = 0x1000000 / (o / (monsize >> 8));
|
else
|
else
|
s_scale = 0x1000000 / ((o << 8) / monsize);
|
s_scale = 0x1000000 / ((o << 8) / monsize);
|
}
|
}
|
#endif
|
#endif
|
else
|
else
|
s_scale = SCALE_1_TO_1;
|
s_scale = SCALE_1_TO_1;
|
moncontrol(1);
|
moncontrol(1);
|
}
|
}
|
|
|
void
|
void
|
_mcleanup (void)
|
_mcleanup (void)
|
{
|
{
|
int fd;
|
int fd;
|
int fromindex;
|
int fromindex;
|
int endfrom;
|
int endfrom;
|
char *frompc;
|
char *frompc;
|
int toindex;
|
int toindex;
|
struct rawarc rawarc;
|
struct rawarc rawarc;
|
|
|
moncontrol(0);
|
moncontrol(0);
|
fd = creat( "gmon.out" , 0666 );
|
fd = creat( "gmon.out" , 0666 );
|
if ( fd < 0 ) {
|
if ( fd < 0 ) {
|
perror( "mcount: gmon.out" );
|
perror( "mcount: gmon.out" );
|
return;
|
return;
|
}
|
}
|
# ifdef DEBUG
|
# ifdef DEBUG
|
fprintf( stderr , "[mcleanup] sbuf 0x%x ssiz %d\n" , sbuf , ssiz );
|
fprintf( stderr , "[mcleanup] sbuf 0x%x ssiz %d\n" , sbuf , ssiz );
|
# endif /* DEBUG */
|
# endif /* DEBUG */
|
|
|
write( fd , sbuf , ssiz );
|
write( fd , sbuf , ssiz );
|
endfrom = s_textsize / (HASHFRACTION * sizeof(*froms));
|
endfrom = s_textsize / (HASHFRACTION * sizeof(*froms));
|
for ( fromindex = 0 ; fromindex < endfrom ; fromindex++ ) {
|
for ( fromindex = 0 ; fromindex < endfrom ; fromindex++ ) {
|
if ( froms[fromindex] == 0 ) {
|
if ( froms[fromindex] == 0 ) {
|
continue;
|
continue;
|
}
|
}
|
frompc = s_lowpc + (fromindex * HASHFRACTION * sizeof(*froms));
|
frompc = s_lowpc + (fromindex * HASHFRACTION * sizeof(*froms));
|
for (toindex=froms[fromindex]; toindex!=0; toindex=tos[toindex].link) {
|
for (toindex=froms[fromindex]; toindex!=0; toindex=tos[toindex].link) {
|
# ifdef DEBUG
|
# ifdef DEBUG
|
fprintf( stderr ,
|
fprintf( stderr ,
|
"[mcleanup] frompc 0x%x selfpc 0x%x count %d\n" ,
|
"[mcleanup] frompc 0x%x selfpc 0x%x count %d\n" ,
|
frompc , tos[toindex].selfpc , tos[toindex].count );
|
frompc , tos[toindex].selfpc , tos[toindex].count );
|
# endif /* DEBUG */
|
# endif /* DEBUG */
|
rawarc.raw_frompc = (unsigned long) frompc;
|
rawarc.raw_frompc = (unsigned long) frompc;
|
rawarc.raw_selfpc = (unsigned long) tos[toindex].selfpc;
|
rawarc.raw_selfpc = (unsigned long) tos[toindex].selfpc;
|
rawarc.raw_count = tos[toindex].count;
|
rawarc.raw_count = tos[toindex].count;
|
write( fd , &rawarc , sizeof rawarc );
|
write( fd , &rawarc , sizeof rawarc );
|
}
|
}
|
}
|
}
|
close( fd );
|
close( fd );
|
}
|
}
|
|
|
/* Solaris 2 libraries use _mcount. */
|
/* Solaris 2 libraries use _mcount. */
|
asm(".globl _mcount; _mcount: jmp internal_mcount");
|
asm(".globl _mcount; _mcount: jmp internal_mcount");
|
/* This is for compatibility with old versions of gcc which used mcount. */
|
/* This is for compatibility with old versions of gcc which used mcount. */
|
asm(".globl mcount; mcount: jmp internal_mcount");
|
asm(".globl mcount; mcount: jmp internal_mcount");
|
|
|
void
|
void
|
internal_mcount (void)
|
internal_mcount (void)
|
{
|
{
|
register char *selfpc;
|
register char *selfpc;
|
register unsigned short *frompcindex;
|
register unsigned short *frompcindex;
|
register struct tostruct *top;
|
register struct tostruct *top;
|
register struct tostruct *prevtop;
|
register struct tostruct *prevtop;
|
register long toindex;
|
register long toindex;
|
static char already_setup;
|
static char already_setup;
|
|
|
/*
|
/*
|
* find the return address for mcount,
|
* find the return address for mcount,
|
* and the return address for mcount's caller.
|
* and the return address for mcount's caller.
|
*/
|
*/
|
|
|
/* selfpc = pc pushed by mcount call.
|
/* selfpc = pc pushed by mcount call.
|
This identifies the function that was just entered. */
|
This identifies the function that was just entered. */
|
selfpc = (void *) __builtin_return_address (0);
|
selfpc = (void *) __builtin_return_address (0);
|
/* frompcindex = pc in preceding frame.
|
/* frompcindex = pc in preceding frame.
|
This identifies the caller of the function just entered. */
|
This identifies the caller of the function just entered. */
|
frompcindex = (void *) __builtin_return_address (1);
|
frompcindex = (void *) __builtin_return_address (1);
|
|
|
if(!already_setup) {
|
if(!already_setup) {
|
extern char etext[];
|
extern char etext[];
|
already_setup = 1;
|
already_setup = 1;
|
/* monstartup(0, etext); */
|
/* monstartup(0, etext); */
|
monstartup((char*)0x08040000, etext);
|
monstartup((char*)0x08040000, etext);
|
#ifdef USE_ONEXIT
|
#ifdef USE_ONEXIT
|
on_exit(_mcleanup, 0);
|
on_exit(_mcleanup, 0);
|
#else
|
#else
|
atexit(_mcleanup);
|
atexit(_mcleanup);
|
#endif
|
#endif
|
}
|
}
|
/*
|
/*
|
* check that we are profiling
|
* check that we are profiling
|
* and that we aren't recursively invoked.
|
* and that we aren't recursively invoked.
|
*/
|
*/
|
if (profiling) {
|
if (profiling) {
|
goto out;
|
goto out;
|
}
|
}
|
profiling++;
|
profiling++;
|
/*
|
/*
|
* check that frompcindex is a reasonable pc value.
|
* check that frompcindex is a reasonable pc value.
|
* for example: signal catchers get called from the stack,
|
* for example: signal catchers get called from the stack,
|
* not from text space. too bad.
|
* not from text space. too bad.
|
*/
|
*/
|
frompcindex = (unsigned short *)((long)frompcindex - (long)s_lowpc);
|
frompcindex = (unsigned short *)((long)frompcindex - (long)s_lowpc);
|
if ((unsigned long)frompcindex > s_textsize) {
|
if ((unsigned long)frompcindex > s_textsize) {
|
goto done;
|
goto done;
|
}
|
}
|
frompcindex =
|
frompcindex =
|
&froms[((long)frompcindex) / (HASHFRACTION * sizeof(*froms))];
|
&froms[((long)frompcindex) / (HASHFRACTION * sizeof(*froms))];
|
toindex = *frompcindex;
|
toindex = *frompcindex;
|
if (toindex == 0) {
|
if (toindex == 0) {
|
/*
|
/*
|
* first time traversing this arc
|
* first time traversing this arc
|
*/
|
*/
|
toindex = ++tos[0].link;
|
toindex = ++tos[0].link;
|
if (toindex >= tolimit) {
|
if (toindex >= tolimit) {
|
goto overflow;
|
goto overflow;
|
}
|
}
|
*frompcindex = toindex;
|
*frompcindex = toindex;
|
top = &tos[toindex];
|
top = &tos[toindex];
|
top->selfpc = selfpc;
|
top->selfpc = selfpc;
|
top->count = 1;
|
top->count = 1;
|
top->link = 0;
|
top->link = 0;
|
goto done;
|
goto done;
|
}
|
}
|
top = &tos[toindex];
|
top = &tos[toindex];
|
if (top->selfpc == selfpc) {
|
if (top->selfpc == selfpc) {
|
/*
|
/*
|
* arc at front of chain; usual case.
|
* arc at front of chain; usual case.
|
*/
|
*/
|
top->count++;
|
top->count++;
|
goto done;
|
goto done;
|
}
|
}
|
/*
|
/*
|
* have to go looking down chain for it.
|
* have to go looking down chain for it.
|
* top points to what we are looking at,
|
* top points to what we are looking at,
|
* prevtop points to previous top.
|
* prevtop points to previous top.
|
* we know it is not at the head of the chain.
|
* we know it is not at the head of the chain.
|
*/
|
*/
|
for (; /* goto done */; ) {
|
for (; /* goto done */; ) {
|
if (top->link == 0) {
|
if (top->link == 0) {
|
/*
|
/*
|
* top is end of the chain and none of the chain
|
* top is end of the chain and none of the chain
|
* had top->selfpc == selfpc.
|
* had top->selfpc == selfpc.
|
* so we allocate a new tostruct
|
* so we allocate a new tostruct
|
* and link it to the head of the chain.
|
* and link it to the head of the chain.
|
*/
|
*/
|
toindex = ++tos[0].link;
|
toindex = ++tos[0].link;
|
if (toindex >= tolimit) {
|
if (toindex >= tolimit) {
|
goto overflow;
|
goto overflow;
|
}
|
}
|
top = &tos[toindex];
|
top = &tos[toindex];
|
top->selfpc = selfpc;
|
top->selfpc = selfpc;
|
top->count = 1;
|
top->count = 1;
|
top->link = *frompcindex;
|
top->link = *frompcindex;
|
*frompcindex = toindex;
|
*frompcindex = toindex;
|
goto done;
|
goto done;
|
}
|
}
|
/*
|
/*
|
* otherwise, check the next arc on the chain.
|
* otherwise, check the next arc on the chain.
|
*/
|
*/
|
prevtop = top;
|
prevtop = top;
|
top = &tos[top->link];
|
top = &tos[top->link];
|
if (top->selfpc == selfpc) {
|
if (top->selfpc == selfpc) {
|
/*
|
/*
|
* there it is.
|
* there it is.
|
* increment its count
|
* increment its count
|
* move it to the head of the chain.
|
* move it to the head of the chain.
|
*/
|
*/
|
top->count++;
|
top->count++;
|
toindex = prevtop->link;
|
toindex = prevtop->link;
|
prevtop->link = top->link;
|
prevtop->link = top->link;
|
top->link = *frompcindex;
|
top->link = *frompcindex;
|
*frompcindex = toindex;
|
*frompcindex = toindex;
|
goto done;
|
goto done;
|
}
|
}
|
|
|
}
|
}
|
done:
|
done:
|
profiling--;
|
profiling--;
|
/* and fall through */
|
/* and fall through */
|
out:
|
out:
|
return; /* normal return restores saved registers */
|
return; /* normal return restores saved registers */
|
|
|
overflow:
|
overflow:
|
profiling++; /* halt further profiling */
|
profiling++; /* halt further profiling */
|
# define TOLIMIT "mcount: tos overflow\n"
|
# define TOLIMIT "mcount: tos overflow\n"
|
write(2, TOLIMIT, sizeof(TOLIMIT));
|
write(2, TOLIMIT, sizeof(TOLIMIT));
|
goto out;
|
goto out;
|
}
|
}
|
|
|
/*
|
/*
|
* Control profiling
|
* Control profiling
|
* profiling is what mcount checks to see if
|
* profiling is what mcount checks to see if
|
* all the data structures are ready.
|
* all the data structures are ready.
|
*/
|
*/
|
static void
|
static void
|
moncontrol(int mode)
|
moncontrol(int mode)
|
{
|
{
|
if (mode)
|
if (mode)
|
{
|
{
|
/* start */
|
/* start */
|
profil((unsigned short *)(sbuf + sizeof(struct phdr)),
|
profil((unsigned short *)(sbuf + sizeof(struct phdr)),
|
ssiz - sizeof(struct phdr),
|
ssiz - sizeof(struct phdr),
|
(long)s_lowpc, s_scale);
|
(long)s_lowpc, s_scale);
|
|
|
profiling = 0;
|
profiling = 0;
|
} else {
|
} else {
|
/* stop */
|
/* stop */
|
profil((unsigned short *)0, 0, 0, 0);
|
profil((unsigned short *)0, 0, 0, 0);
|
profiling = 3;
|
profiling = 3;
|
}
|
}
|
}
|
}
|
|
|
