/* profiler.c -- profiling utility
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/* profiler.c -- profiling utility
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Copyright (C) 2001 Marko Mlinar, markom@opencores.org
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Copyright (C) 2001 Marko Mlinar, markom@opencores.org
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Copyright (C) 2008 Embecosm Limited
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Copyright (C) 2008 Embecosm Limited
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|
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Contributor Jeremy Bennett <jeremy.bennett@embecosm.com>
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Contributor Jeremy Bennett <jeremy.bennett@embecosm.com>
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This file is part of Or1ksim, the OpenRISC 1000 Architectural Simulator.
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This file is part of Or1ksim, the OpenRISC 1000 Architectural Simulator.
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This program is free software; you can redistribute it and/or modify it
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This program is free software; you can redistribute it and/or modify it
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under the terms of the GNU General Public License as published by the Free
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under the terms of the GNU General Public License as published by the Free
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Software Foundation; either version 3 of the License, or (at your option)
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Software Foundation; either version 3 of the License, or (at your option)
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any later version.
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any later version.
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This program is distributed in the hope that it will be useful, but WITHOUT
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This program is distributed in the hope that it will be useful, but WITHOUT
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ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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more details.
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more details.
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You should have received a copy of the GNU General Public License along
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You should have received a copy of the GNU General Public License along
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with this program. If not, see <http://www.gnu.org/licenses/>. */
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with this program. If not, see <http://www.gnu.org/licenses/>. */
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/* This program is commented throughout in a fashion suitable for processing
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/* This program is commented throughout in a fashion suitable for processing
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with Doxygen. */
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with Doxygen. */
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/* Command line utility, that displays profiling information, generated
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/* Command line utility, that displays profiling information, generated
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by or1ksim. (use profile command interactively, when running or1ksim, or
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by or1ksim. (use profile command interactively, when running or1ksim, or
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separate psim command). */
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separate psim command). */
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#define PROF_DEBUG 0
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/* Autoconf and/or portability configuration */
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/* Autoconf and/or portability configuration */
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#include "config.h"
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#include "config.h"
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#include "port.h"
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#include "port.h"
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/* Package includes */
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/* Package includes */
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#include "profiler.h"
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#include "profiler.h"
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#include "sim-config.h"
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#include "sim-config.h"
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#include "argtable2.h"
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#include "argtable2.h"
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/*! Maximum stack frames that can be profiled */
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/*! Maximum stack frames that can be profiled */
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#define MAX_STACK 1024
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#define MAX_STACK 262144
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/*! Data structure representing information about a stack frame */
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/*! Data structure representing information about a stack frame */
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struct stack_struct
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struct stack_struct
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{
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{
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unsigned int addr; /*!< Function address */
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unsigned int addr; /*!< Function address */
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unsigned int cycles; /*!< Cycles of func start; subfuncs added later */
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unsigned int cycles; /*!< Cycles of func start; subfuncs added later */
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unsigned int raddr; /*!< Return address */
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unsigned int raddr; /*!< Return address */
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char name[33]; /*!< Name of the function */
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char name[33]; /*!< Name of the function */
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};
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};
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/*! Global: data about functions */
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/*! Global: data about functions */
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struct func_struct prof_func[MAX_FUNCS];
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struct func_struct prof_func[MAX_FUNCS];
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/*! Global: total number of functions */
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/*! Global: total number of functions */
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int prof_nfuncs = 0;
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int prof_nfuncs = 0;
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/*! Global: current cycles */
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/*! Global: current cycles */
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int prof_cycles = 0;
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int prof_cycles = 0;
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/*! Representation of the stack */
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/*! Representation of the stack */
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static struct stack_struct stack[MAX_STACK];
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static struct stack_struct stack[MAX_STACK];
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/*! Current depth */
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/*! Current depth */
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static int nstack = 0;
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static int nstack = 0;
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/*! Max depth */
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/*! Max depth */
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static int maxstack = 0;
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static int maxstack = 0;
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/*! Number of total calls */
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/*! Number of total calls */
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static int ntotcalls = 0;
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static int ntotcalls = 0;
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/*! Number of covered calls */
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/*! Number of covered calls */
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static int nfunccalls = 0;
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static int nfunccalls = 0;
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/*! Whether we are in cumulative mode */
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/*! Whether we are in cumulative mode */
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static int cumulative = 0;
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static int cumulative = 0;
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/*! Whether we should not report warnings */
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/*! Whether we should not report warnings */
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static int quiet = 0;
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static int quiet = 0;
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/*! File to read from */
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/*! File to read from */
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static FILE *fprof = 0;
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static FILE *fprof = 0;
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/*---------------------------------------------------------------------------*/
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/*---------------------------------------------------------------------------*/
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/*! Acquire data from profiler file
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/*! Acquire data from profiler file
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@param[in] fprofname Data file to analyse
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@param[in] fprofname Data file to analyse
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@return 0 on success, return code otherwise */
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@return 0 on success, return code otherwise */
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/*---------------------------------------------------------------------------*/
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/*---------------------------------------------------------------------------*/
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int
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int
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prof_acquire (const char *fprofname)
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prof_acquire (const char *fprofname)
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{
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{
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int line = 0;
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int line = 0;
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int reopened = 0;
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int reopened = 0;
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if (runtime.sim.fprof)
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if (runtime.sim.fprof)
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{
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{
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fprof = runtime.sim.fprof;
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fprof = runtime.sim.fprof;
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reopened = 1;
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reopened = 1;
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if (PROF_DEBUG) printf("reopened=1\n");
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rewind (fprof);
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rewind (fprof);
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}
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}
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else
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else
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fprof = fopen (fprofname, "rt");
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fprof = fopen (fprofname, "rt");
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if (!fprof)
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if (!fprof)
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{
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{
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fprintf (stderr, "Cannot open profile file: %s\n", fprofname);
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fprintf (stderr, "Cannot open profile file: %s\n", fprofname);
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return 1;
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return 1;
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}
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}
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int ctr =0;
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while (1)
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while (1)
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{
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{
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if (PROF_DEBUG) printf("%d ",ctr++);
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char dir = fgetc (fprof);
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char dir = fgetc (fprof);
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line++;
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line++;
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if (dir == '+')
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if (dir == '+')
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{
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{
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if (fscanf
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if (fscanf
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(fprof, "%08X %08X %08X %s\n", &stack[nstack].cycles,
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(fprof, "%08X %08X %08X %s\n", &stack[nstack].cycles,
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&stack[nstack].raddr, &stack[nstack].addr,
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&stack[nstack].raddr, &stack[nstack].addr,
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&stack[nstack].name[0]) != 4)
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&stack[nstack].name[0]) != 4)
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fprintf (stderr, "Error reading line #%i\n", line);
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fprintf (stderr, "Error reading line #%i\n", line);
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else
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else
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{
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{
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prof_cycles = stack[nstack].cycles;
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prof_cycles = stack[nstack].cycles;
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nstack++;
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nstack++;
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if (PROF_DEBUG) printf("+ 0x%.8x nstack %d\n",stack[nstack-1].raddr, nstack);
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if (nstack > maxstack)
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if (nstack > maxstack)
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maxstack = nstack;
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maxstack = nstack;
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}
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}
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ntotcalls++;
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ntotcalls++;
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}
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}
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else if (dir == '-')
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else if (dir == '-')
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{
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{
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struct stack_struct s;
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struct stack_struct s;
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if (fscanf (fprof, "%08X %08X\n", &s.cycles, &s.raddr) != 2)
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if (fscanf (fprof, "%08X %08X\n", &s.cycles, &s.raddr) != 2)
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fprintf (stderr, "Error reading line #%i\n", line);
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fprintf (stderr, "Error reading line #%i\n", line);
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else
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else
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{
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{
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int i;
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int i;
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prof_cycles = s.cycles;
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prof_cycles = s.cycles;
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if (PROF_DEBUG) printf("- 0x%.8x nstack %d\n",s.raddr ,nstack);
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for (i = nstack - 1; i >= 0; i--)
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for (i = nstack - 1; i >= 0; i--)
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if (stack[i].raddr == s.raddr)
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if (stack[i].raddr == s.raddr)
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break;
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break;
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if (i >= 0)
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if (i >= 0)
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{
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{
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/* pop everything above current from stack,
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/* pop everything above current from stack,
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if more than one, something went wrong */
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if more than one, something went wrong */
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while (nstack > i)
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while (nstack > i)
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{
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{
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int j;
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int j;
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long time;
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long time;
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nstack--;
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nstack--;
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time = s.cycles - stack[nstack].cycles;
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time = s.cycles - stack[nstack].cycles;
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if (!quiet && time < 0)
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if (!quiet && time < 0)
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{
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{
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fprintf (stderr,
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fprintf (stderr,
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"WARNING: Negative time at %s (return addr = %08X).\n",
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"WARNING: Negative time at %s (return addr = %08X).\n",
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stack[i].name, stack[i].raddr);
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stack[i].name, stack[i].raddr);
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time = 0;
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time = 0;
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}
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}
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/* Whether in normal mode, we must substract called function from execution time. */
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/* Whether in normal mode, we must substract called function from execution time. */
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if (!cumulative)
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if (!cumulative)
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for (j = 0; j < nstack; j++)
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for (j = 0; j < nstack; j++)
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stack[j].cycles += time;
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stack[j].cycles += time;
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if (!quiet && i != nstack)
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if (!quiet && i != nstack)
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fprintf (stderr,
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fprintf (stderr,
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"WARNING: Missaligned return call for %s (%08X) (found %s @ %08X), closing.\n",
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"WARNING: Missaligned return call for %s (%08X) (found %s @ %08X), closing.\n",
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stack[nstack].name, stack[nstack].raddr,
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stack[nstack].name, stack[nstack].raddr,
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stack[i].name, stack[i].raddr);
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stack[i].name, stack[i].raddr);
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for (j = 0; j < prof_nfuncs; j++)
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for (j = 0; j < prof_nfuncs; j++)
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if (stack[nstack].addr == prof_func[j].addr)
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if (stack[nstack].addr == prof_func[j].addr)
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{ /* function exists, append. */
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{ /* function exists, append. */
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prof_func[j].cum_cycles += time;
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prof_func[j].cum_cycles += time;
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prof_func[j].calls++;
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prof_func[j].calls++;
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nfunccalls++;
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nfunccalls++;
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break;
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break;
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}
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}
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if (j >= prof_nfuncs)
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if (j >= prof_nfuncs)
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{ /* function does not yet exist, create new. */
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{ /* function does not yet exist, create new. */
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prof_func[prof_nfuncs].cum_cycles = time;
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prof_func[prof_nfuncs].cum_cycles = time;
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prof_func[prof_nfuncs].calls = 1;
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prof_func[prof_nfuncs].calls = 1;
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nfunccalls++;
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nfunccalls++;
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prof_func[prof_nfuncs].addr = stack[nstack].addr;
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prof_func[prof_nfuncs].addr = stack[nstack].addr;
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strcpy (prof_func[prof_nfuncs].name,
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strcpy (prof_func[prof_nfuncs].name,
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stack[nstack].name);
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stack[nstack].name);
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prof_nfuncs++;
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prof_nfuncs++;
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}
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}
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}
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}
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}
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}
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else if (!quiet)
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else if (!quiet)
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fprintf (stderr,
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fprintf (stderr,
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"WARNING: Cannot find return call for (%08X), ignoring.\n",
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"WARNING: Cannot find return call for (%08X), ignoring.\n",
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s.raddr);
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s.raddr);
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}
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}
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}
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}
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else
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else
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break;
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break;
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}
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}
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/* If we have reopened the file, we need to add end of "[outside functions]" */
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/* If we have reopened the file, we need to add end of "[outside functions]" */
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if (reopened)
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if (reopened)
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{
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{
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prof_cycles = runtime.sim.cycles;
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prof_cycles = runtime.sim.cycles;
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/* pop everything above current from stack,
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/* pop everything above current from stack,
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if more than one, something went wrong */
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if more than one, something went wrong */
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while (nstack > 0)
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while (nstack > 0)
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{
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{
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int j;
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int j;
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long time;
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long time;
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nstack--;
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nstack--;
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time = runtime.sim.cycles - stack[nstack].cycles;
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time = runtime.sim.cycles - stack[nstack].cycles;
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/* Whether in normal mode, we must substract called function from execution time. */
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/* Whether in normal mode, we must substract called function from execution time. */
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if (!cumulative)
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if (!cumulative)
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for (j = 0; j < nstack; j++)
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for (j = 0; j < nstack; j++)
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stack[j].cycles += time;
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stack[j].cycles += time;
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|
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for (j = 0; j < prof_nfuncs; j++)
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for (j = 0; j < prof_nfuncs; j++)
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if (stack[nstack].addr == prof_func[j].addr)
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if (stack[nstack].addr == prof_func[j].addr)
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{ /* function exists, append. */
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{ /* function exists, append. */
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prof_func[j].cum_cycles += time;
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prof_func[j].cum_cycles += time;
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prof_func[j].calls++;
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prof_func[j].calls++;
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nfunccalls++;
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nfunccalls++;
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break;
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break;
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}
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}
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if (j >= prof_nfuncs)
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if (j >= prof_nfuncs)
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{ /* function does not yet exist, create new. */
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{ /* function does not yet exist, create new. */
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prof_func[prof_nfuncs].cum_cycles = time;
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prof_func[prof_nfuncs].cum_cycles = time;
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prof_func[prof_nfuncs].calls = 1;
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prof_func[prof_nfuncs].calls = 1;
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nfunccalls++;
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nfunccalls++;
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prof_func[prof_nfuncs].addr = stack[nstack].addr;
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prof_func[prof_nfuncs].addr = stack[nstack].addr;
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strcpy (prof_func[prof_nfuncs].name, stack[nstack].name);
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strcpy (prof_func[prof_nfuncs].name, stack[nstack].name);
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prof_nfuncs++;
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prof_nfuncs++;
|
}
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}
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}
|
}
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}
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}
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else
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else
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fclose (fprof);
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fclose (fprof);
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return 0;
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return 0;
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}
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}
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|
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/* Print out profiling data */
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/* Print out profiling data */
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static void
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static void
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prof_print ()
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prof_print ()
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{
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{
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int i, j;
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int i, j;
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if (cumulative)
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if (cumulative)
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PRINTF ("CUMULATIVE TIMES\n");
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PRINTF ("CUMULATIVE TIMES\n");
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PRINTF
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PRINTF
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("---------------------------------------------------------------------------\n");
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("---------------------------------------------------------------------------\n");
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PRINTF
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PRINTF
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("|function name |addr |# calls |avg cycles |total cyles |\n");
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("|function name |addr |# calls |avg cycles |total cyles |\n");
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PRINTF
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PRINTF
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("|-------------------------+--------+--------+------------+----------------|\n");
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("|-------------------------+--------+--------+------------+----------------|\n");
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for (j = 0; j < prof_nfuncs; j++)
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for (j = 0; j < prof_nfuncs; j++)
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{
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{
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int bestcyc = 0, besti = 0;
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int bestcyc = 0, besti = 0;
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for (i = 0; i < prof_nfuncs; i++)
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for (i = 0; i < prof_nfuncs; i++)
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if (prof_func[i].cum_cycles > bestcyc)
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if (prof_func[i].cum_cycles > bestcyc)
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{
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{
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bestcyc = prof_func[i].cum_cycles;
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bestcyc = prof_func[i].cum_cycles;
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besti = i;
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besti = i;
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}
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}
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i = besti;
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i = besti;
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PRINTF ("| %-24s|%08X|%8li|%12.1f|%11li,%3.0f%%|\n",
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PRINTF ("| %-24s|%08X|%8li|%12.1f|%11li,%3.0f%%|\n",
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prof_func[i].name, prof_func[i].addr, prof_func[i].calls,
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prof_func[i].name, prof_func[i].addr, prof_func[i].calls,
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((double) prof_func[i].cum_cycles / prof_func[i].calls),
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((double) prof_func[i].cum_cycles / prof_func[i].calls),
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prof_func[i].cum_cycles,
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prof_func[i].cum_cycles,
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(100. * prof_func[i].cum_cycles / prof_cycles));
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(100. * prof_func[i].cum_cycles / prof_cycles));
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prof_func[i].cum_cycles = -1;
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prof_func[i].cum_cycles = -1;
|
}
|
}
|
PRINTF
|
PRINTF
|
("---------------------------------------------------------------------------\n");
|
("---------------------------------------------------------------------------\n");
|
PRINTF ("Total %i functions, %i cycles.\n", prof_nfuncs, prof_cycles);
|
PRINTF ("Total %i functions, %i cycles.\n", prof_nfuncs, prof_cycles);
|
PRINTF ("Total function calls %i/%i (max depth %i).\n", nfunccalls,
|
PRINTF ("Total function calls %i/%i (max depth %i).\n", nfunccalls,
|
ntotcalls, maxstack);
|
ntotcalls, maxstack);
|
}
|
}
|
|
|
/* Set options */
|
/* Set options */
|
void
|
void
|
prof_set (int _quiet, int _cumulative)
|
prof_set (int _quiet, int _cumulative)
|
{
|
{
|
quiet = _quiet;
|
quiet = _quiet;
|
cumulative = _cumulative;
|
cumulative = _cumulative;
|
}
|
}
|
|
|
/*---------------------------------------------------------------------------*/
|
/*---------------------------------------------------------------------------*/
|
/*! Parse the arguments for the profiling utility
|
/*! Parse the arguments for the profiling utility
|
|
|
Updated by Jeremy Bennett to use argtable2. Also has an option just to
|
Updated by Jeremy Bennett to use argtable2. Also has an option just to
|
print help, for use with the CLI.
|
print help, for use with the CLI.
|
|
|
@param[in] argc Number of command args
|
@param[in] argc Number of command args
|
@param[in] argv Vector of the command args
|
@param[in] argv Vector of the command args
|
@param[in] just_help If 1 (true), ignore argc & argv and just print out
|
@param[in] just_help If 1 (true), ignore argc & argv and just print out
|
the help message without parsing args
|
the help message without parsing args
|
|
|
@return 0 on success, 1 on failure */
|
@return 0 on success, 1 on failure */
|
/*---------------------------------------------------------------------------*/
|
/*---------------------------------------------------------------------------*/
|
int
|
int
|
main_profiler (int argc, char *argv[], int just_help)
|
main_profiler (int argc, char *argv[], int just_help)
|
{
|
{
|
struct arg_lit *vercop;
|
struct arg_lit *vercop;
|
struct arg_lit *help;
|
struct arg_lit *help;
|
struct arg_lit *cum_arg;
|
struct arg_lit *cum_arg;
|
struct arg_lit *quiet_arg;
|
struct arg_lit *quiet_arg;
|
struct arg_file *gen_file;
|
struct arg_file *gen_file;
|
struct arg_end *end;
|
struct arg_end *end;
|
|
|
void *argtab[6];
|
void *argtab[6];
|
int nerrors;
|
int nerrors;
|
|
|
/* Specify each argument, with fallback values */
|
/* Specify each argument, with fallback values */
|
vercop = arg_lit0 ("v", "version", "version and copyright notice");
|
vercop = arg_lit0 ("v", "version", "version and copyright notice");
|
help = arg_lit0 ("h", "help", "print this help message");
|
help = arg_lit0 ("h", "help", "print this help message");
|
cum_arg = arg_lit0 ("c", "cumulative",
|
cum_arg = arg_lit0 ("c", "cumulative",
|
"cumulative sum of cycles in functions");
|
"cumulative sum of cycles in functions");
|
quiet_arg = arg_lit0 ("q", "quiet", "suppress messages");
|
quiet_arg = arg_lit0 ("q", "quiet", "suppress messages");
|
gen_file = arg_file0 ("g", "generate", "<file>",
|
gen_file = arg_file0 ("g", "generate", "<file>",
|
"data file to analyse (default " "sim.profile)");
|
"data file to analyse (default " "sim.profile)");
|
gen_file->filename[0] = "sim.profile";
|
gen_file->filename[0] = "sim.profile";
|
end = arg_end (20);
|
end = arg_end (20);
|
|
|
/* Set up the argument table */
|
/* Set up the argument table */
|
argtab[0] = vercop;
|
argtab[0] = vercop;
|
argtab[1] = help;
|
argtab[1] = help;
|
argtab[2] = cum_arg;
|
argtab[2] = cum_arg;
|
argtab[3] = quiet_arg;
|
argtab[3] = quiet_arg;
|
argtab[4] = gen_file;
|
argtab[4] = gen_file;
|
argtab[5] = end;
|
argtab[5] = end;
|
|
|
/* If we are just asked for a help message, then we don't parse the
|
/* If we are just asked for a help message, then we don't parse the
|
args. This is used to implement the help function from the CLI. */
|
args. This is used to implement the help function from the CLI. */
|
if (just_help)
|
if (just_help)
|
{
|
{
|
printf ("profile");
|
printf ("profile");
|
arg_print_syntax (stdout, argtab, "\n");
|
arg_print_syntax (stdout, argtab, "\n");
|
arg_print_glossary (stdout, argtab, " %-25s %s\n");
|
arg_print_glossary (stdout, argtab, " %-25s %s\n");
|
|
|
arg_freetable (argtab, sizeof (argtab) / sizeof (argtab[0]));
|
arg_freetable (argtab, sizeof (argtab) / sizeof (argtab[0]));
|
return 0;
|
return 0;
|
}
|
}
|
|
|
/* Parse */
|
/* Parse */
|
nerrors = arg_parse (argc, argv, argtab);
|
nerrors = arg_parse (argc, argv, argtab);
|
|
|
/* Special case here is if help or version is specified, we ignore any other
|
/* Special case here is if help or version is specified, we ignore any other
|
errors and just print the help or version information and then give up. */
|
errors and just print the help or version information and then give up. */
|
if (vercop->count > 0)
|
if (vercop->count > 0)
|
{
|
{
|
PRINTF ("OpenRISC 1000 Profiling Utility, version %s\n",
|
PRINTF ("OpenRISC 1000 Profiling Utility, version %s\n",
|
PACKAGE_VERSION);
|
PACKAGE_VERSION);
|
|
|
arg_freetable (argtab, sizeof (argtab) / sizeof (argtab[0]));
|
arg_freetable (argtab, sizeof (argtab) / sizeof (argtab[0]));
|
return 0;
|
return 0;
|
}
|
}
|
|
|
if (help->count > 0)
|
if (help->count > 0)
|
{
|
{
|
printf ("Usage: %s ", argv[0]);
|
printf ("Usage: %s ", argv[0]);
|
arg_print_syntax (stdout, argtab, "\n");
|
arg_print_syntax (stdout, argtab, "\n");
|
arg_print_glossary (stdout, argtab, " %-25s %s\n");
|
arg_print_glossary (stdout, argtab, " %-25s %s\n");
|
|
|
arg_freetable (argtab, sizeof (argtab) / sizeof (argtab[0]));
|
arg_freetable (argtab, sizeof (argtab) / sizeof (argtab[0]));
|
return 0;
|
return 0;
|
}
|
}
|
|
|
/* Deal with any errors */
|
/* Deal with any errors */
|
if (0 != nerrors)
|
if (0 != nerrors)
|
{
|
{
|
arg_print_errors (stderr, end, "profile");
|
arg_print_errors (stderr, end, "profile");
|
fprintf (stderr, "Usage: %s ", argv[0]);
|
fprintf (stderr, "Usage: %s ", argv[0]);
|
arg_print_syntaxv (stderr, argtab, "\n");
|
arg_print_syntaxv (stderr, argtab, "\n");
|
|
|
arg_freetable (argtab, sizeof (argtab) / sizeof (argtab[0]));
|
arg_freetable (argtab, sizeof (argtab) / sizeof (argtab[0]));
|
return 1;
|
return 1;
|
}
|
}
|
|
|
/* Cumulative result wanted? */
|
/* Cumulative result wanted? */
|
cumulative = cum_arg->count;
|
cumulative = cum_arg->count;
|
|
|
/* Suppress messages? */
|
/* Suppress messages? */
|
quiet = quiet_arg->count;
|
quiet = quiet_arg->count;
|
|
|
/* Get the profile from the file */
|
/* Get the profile from the file */
|
prof_acquire (gen_file->filename[0]);
|
prof_acquire (gen_file->filename[0]);
|
|
|
/* Now we have all data acquired. Print out. */
|
/* Now we have all data acquired. Print out. */
|
prof_print ();
|
prof_print ();
|
|
|
arg_freetable (argtab, sizeof (argtab) / sizeof (argtab[0]));
|
arg_freetable (argtab, sizeof (argtab) / sizeof (argtab[0]));
|
return 0;
|
return 0;
|
|
|
} /* main_profiler() */
|
} /* main_profiler() */
|
|
|
