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ptrace.c
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ptrace.c
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/* ptrace.c - pipeline tracing routines */
/* SimpleScalar(TM) Tool Suite
* Copyright (C) 1994-2003 by Todd M. Austin, Ph.D. and SimpleScalar, LLC.
* All Rights Reserved.
*
* THIS IS A LEGAL DOCUMENT, BY USING SIMPLESCALAR,
* YOU ARE AGREEING TO THESE TERMS AND CONDITIONS.
*
* No portion of this work may be used by any commercial entity, or for any
* commercial purpose, without the prior, written permission of SimpleScalar,
* LLC ([email protected]). Nonprofit and noncommercial use is permitted
* as described below.
*
* 1. SimpleScalar is provided AS IS, with no warranty of any kind, express
* or implied. The user of the program accepts full responsibility for the
* application of the program and the use of any results.
*
* 2. Nonprofit and noncommercial use is encouraged. SimpleScalar may be
* downloaded, compiled, executed, copied, and modified solely for nonprofit,
* educational, noncommercial research, and noncommercial scholarship
* purposes provided that this notice in its entirety accompanies all copies.
* Copies of the modified software can be delivered to persons who use it
* solely for nonprofit, educational, noncommercial research, and
* noncommercial scholarship purposes provided that this notice in its
* entirety accompanies all copies.
*
* 3. ALL COMMERCIAL USE, AND ALL USE BY FOR PROFIT ENTITIES, IS EXPRESSLY
* PROHIBITED WITHOUT A LICENSE FROM SIMPLESCALAR, LLC ([email protected]).
*
* 4. No nonprofit user may place any restrictions on the use of this software,
* including as modified by the user, by any other authorized user.
*
* 5. Noncommercial and nonprofit users may distribute copies of SimpleScalar
* in compiled or executable form as set forth in Section 2, provided that
* either: (A) it is accompanied by the corresponding machine-readable source
* code, or (B) it is accompanied by a written offer, with no time limit, to
* give anyone a machine-readable copy of the corresponding source code in
* return for reimbursement of the cost of distribution. This written offer
* must permit verbatim duplication by anyone, or (C) it is distributed by
* someone who received only the executable form, and is accompanied by a
* copy of the written offer of source code.
*
* 6. SimpleScalar was developed by Todd M. Austin, Ph.D. The tool suite is
* currently maintained by SimpleScalar LLC ([email protected]). US Mail:
* 2395 Timbercrest Court, Ann Arbor, MI 48105.
*
* Copyright (C) 1994-2003 by Todd M. Austin, Ph.D. and SimpleScalar, LLC.
*/
#include <stdio.h>
#include <stdlib.h>
#include "host.h"
#include "misc.h"
#include "machine.h"
#include "range.h"
#include "ptrace.h"
/* pipetrace file */
FILE *ptrace_outfd = NULL;
/* pipetracing is active */
int ptrace_active = FALSE;
/* pipetracing range */
struct range_range_t ptrace_range;
/* one-shot switch for pipetracing */
int ptrace_oneshot = FALSE;
/* open pipeline trace */
void
ptrace_open(char *fname, /* output filename */
char *range) /* trace range */
{
char *errstr;
/* parse the output range */
if (!range)
{
/* no range */
errstr = range_parse_range(":", &ptrace_range);
if (errstr)
panic("cannot parse pipetrace range, use: {<start>}:{<end>}");
ptrace_active = TRUE;
}
else
{
errstr = range_parse_range(range, &ptrace_range);
if (errstr)
fatal("cannot parse pipetrace range, use: {<start>}:{<end>}");
ptrace_active = FALSE;
}
if (ptrace_range.start.ptype != ptrace_range.end.ptype)
fatal("range endpoints are not of the same type");
/* open output trace file */
if (!fname || !strcmp(fname, "-") || !strcmp(fname, "stderr"))
ptrace_outfd = stderr;
else if (!strcmp(fname, "stdout"))
ptrace_outfd = stdout;
else
{
ptrace_outfd = fopen(fname, "w");
if (!ptrace_outfd)
fatal("cannot open pipetrace output file `%s'", fname);
}
}
/* close pipeline trace */
void
ptrace_close(void)
{
if (ptrace_outfd != NULL && ptrace_outfd != stderr && ptrace_outfd != stdout)
fclose(ptrace_outfd);
}
/* declare a new instruction */
void
__ptrace_newinst(unsigned int iseq, /* instruction sequence number */
md_inst_t inst, /* new instruction */
md_addr_t pc, /* program counter of instruction */
md_addr_t addr) /* address referenced, if load/store */
{
myfprintf(ptrace_outfd, "+ %u 0x%08p 0x%08p ", iseq, pc, addr);
md_print_insn(inst, addr, ptrace_outfd);
fprintf(ptrace_outfd, "\n");
if (ptrace_outfd == stderr || ptrace_outfd == stdout)
fflush(ptrace_outfd);
}
/* declare a new uop */
void
__ptrace_newuop(unsigned int iseq, /* instruction sequence number */
char *uop_desc, /* new uop description */
md_addr_t pc, /* program counter of instruction */
md_addr_t addr) /* address referenced, if load/store */
{
myfprintf(ptrace_outfd,
"+ %u 0x%08p 0x%08p [%s]\n", iseq, pc, addr, uop_desc);
if (ptrace_outfd == stderr || ptrace_outfd == stdout)
fflush(ptrace_outfd);
}
/* declare instruction retirement or squash */
void
__ptrace_endinst(unsigned int iseq) /* instruction sequence number */
{
fprintf(ptrace_outfd, "- %u\n", iseq);
if (ptrace_outfd == stderr || ptrace_outfd == stdout)
fflush(ptrace_outfd);
}
/* declare a new cycle */
void
__ptrace_newcycle(tick_t cycle) /* new cycle */
{
fprintf(ptrace_outfd, "@ %.0f\n", (double)cycle);
if (ptrace_outfd == stderr || ptrace_outfd == stdout)
fflush(ptrace_outfd);
}
/* indicate instruction transition to a new pipeline stage */
void
__ptrace_newstage(unsigned int iseq, /* instruction sequence number */
char *pstage, /* pipeline stage entered */
unsigned int pevents)/* pipeline events while in stage */
{
fprintf(ptrace_outfd, "* %u %s 0x%08x\n", iseq, pstage, pevents);
if (ptrace_outfd == stderr || ptrace_outfd == stdout)
fflush(ptrace_outfd);
}