Mercurial > vba-clojure

     1 // VisualBoyAdvance - Nintendo Gameboy/GameboyAdvance (TM) emulator.

     2 // Copyright (C) 1999-2003 Forgotten

     3 // Copyright (C) 2004 Forgotten and the VBA development team

     4 

     5 // This program is free software; you can redistribute it and/or modify

     6 // it under the terms of the GNU General Public License as published by

     7 // the Free Software Foundation; either version 2, or(at your option)

     8 // any later version.

     9 //

    10 // This program is distributed in the hope that it will be useful,

    11 // but WITHOUT ANY WARRANTY; without even the implied warranty of

    12 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

    13 // GNU General Public License for more details.

    14 //

    15 // You should have received a copy of the GNU General Public License

    16 // along with this program; if not, write to the Free Software Foundation,

    17 // Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.

    18 

    19 // adapted from gmon.c

    20 /*-

    21  * Copyright (c) 1991, 1998 The Regents of the University of California.

    22  * All rights reserved.

    23  *

    24  * Redistribution and use in source and binary forms, with or without

    25  * modification, are permitted provided that the following conditions

    26  * are met:

    27  * 1. Redistributions of source code must retain the above copyright

    28  *    notice, this list of conditions and the following disclaimer.

    29  * 2. Redistributions in binary form must reproduce the above copyright

    30  *    notice, this list of conditions and the following disclaimer in the

    31  *    documentation and/or other materials provided with the distribution.

    32  * 3. [rescinded 22 July 1999]

    33  * 4. Neither the name of the University nor the names of its contributors

    34  *    may be used to endorse or promote products derived from this software

    35  *    without specific prior written permission.

    36  *

    37  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND

    38  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE

    39  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE

    40  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE

    41  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL

    42  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS

    43  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)

    44  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT

    45  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY

    46  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF

    47  * SUCH DAMAGE.

    48  */

    49 

    50 #include <stdlib.h>

    51 #include <stdio.h>

    52 #include <memory.h>

    53 

    54 #include "gmon.h"

    55 #include "gmon_out.h"

    56 

    57 #include "../common/System.h"

    58 #include "../gba/GBA.h"

    59 #include "../gba/GBAGlobals.h"

    60 #include "../NLS.h"

    61 

    62 /*

    63  * froms is actually a bunch of unsigned shorts indexing tos

    64  */

    65 static int  profiling = 3;

    66 static unsigned short *froms;

    67 static struct tostruct *tos = 0;

    68 static long  tolimit = 0;

    69 static u32  s_lowpc = 0;

    70 static u32  s_highpc = 0;

    71 static unsigned long s_textsize = 0;

    72 

    73 static int ssiz;

    74 static char *sbuf;

    75 static int s_scale;

    76 

    77 static int hz = 0;

    78 static int hist_num_bins = 0;

    79 static char hist_dimension[16] = "seconds";

    80 static char hist_dimension_abbrev = 's';

    81 

    82 /* see profil(2) where this is describe (incorrectly) */

    83 #define  SCALE_1_TO_1 0x10000L

    84 

    85 void profPut32(char *b, u32 v)

    86 {

    87   b[0] = v & 255;

    88   b[1] = (v >> 8) & 255;

    89   b[2] = (v >> 16) & 255;

    90   b[3] = (v >> 24) & 255;

    91 }

    92 

    93 void profPut16(char *b, u16 v)

    94 {

    95   b[0] = v & 255;

    96   b[1] = (v >> 8) & 255;

    97 }

    98 

    99 int profWrite8(FILE *f, u8 b)

   100 {

   101   if(fwrite(&b, 1, 1, f) != 1)

   102     return 1;

   103   return 0;

   104 }

   105 

   106 int profWrite32(FILE *f, u32 v)

   107 {

   108   char buf[4];

   109 

   110   profPut32(buf, v);

   111   if(fwrite(buf, 1, 4, f) != 4)

   112     return 1;

   113   return 0;

   114 }

   115 

   116 int profWrite(FILE *f, char *buf, unsigned int n)

   117 {

   118   if(fwrite(buf, 1, n, f) != n)

   119     return 1;

   120   return 0;

   121 }

   122 

   123 /* Control profiling;

   124    profiling is what mcount checks to see if

   125    all the data structures are ready.  */

   126 

   127 void profControl(int mode)

   128 {

   129   if (mode) {

   130     /* start */

   131 #ifdef PROFILING

   132     cpuProfil(sbuf, ssiz, (u32)s_lowpc, s_scale);

   133 #endif

   134     profiling = 0;

   135   } else {

   136     /* stop */

   137 #ifdef PROFILING

   138     cpuProfil(NULL, 0, 0, 0);

   139 #endif

   140     profiling = 3;

   141   }

   142 }

   143 

   144 

   145 #define MSG N_("No space for profiling buffer(s)\n")

   146 

   147 void profStartup(u32 lowpc, u32 highpc)

   148 {

   149   int monsize;

   150   char *buffer;

   151   int o;

   152   

   153   /*

   154    * round lowpc and highpc to multiples of the density we're using

   155    * so the rest of the scaling (here and in gprof) stays in ints.

   156    */

   157   lowpc = ROUNDDOWN(lowpc, HISTFRACTION*sizeof(HISTCOUNTER));

   158   s_lowpc = lowpc;

   159   highpc = ROUNDUP(highpc, HISTFRACTION*sizeof(HISTCOUNTER));

   160   s_highpc = highpc;

   161   s_textsize = highpc - lowpc;

   162   monsize = (s_textsize / HISTFRACTION);

   163   buffer = (char *)calloc(1, 2*monsize );

   164   if ( buffer == NULL ) {

   165     systemMessage(0, MSG);

   166     return;

   167   }

   168   froms = (unsigned short *) calloc(1, 4*s_textsize / HASHFRACTION );

   169   if ( froms == NULL ) {

   170     systemMessage(0, MSG);

   171     free(buffer);

   172     buffer = NULL;

   173     return;

   174   }

   175   tolimit = s_textsize * ARCDENSITY / 100;

   176   if ( tolimit < MINARCS ) {

   177     tolimit = MINARCS;

   178   } else if ( tolimit > 65534 ) {

   179     tolimit = 65534;

   180   }

   181   tos = (struct tostruct *) calloc(1, tolimit * sizeof( struct tostruct ) );

   182   if ( tos == NULL ) {

   183     systemMessage(0, MSG);

   184     

   185     free(buffer);

   186     buffer = NULL;

   187     

   188     free(froms);

   189     froms = NULL;

   190     

   191     return;

   192   }

   193   tos[0].link = 0;

   194   sbuf = buffer;

   195   ssiz = monsize;

   196   if ( monsize <= 0 )

   197     return;

   198   o = highpc - lowpc;

   199   if( monsize < o )

   200     s_scale = (int)(( (float) monsize / o ) * SCALE_1_TO_1);

   201   else

   202     s_scale = SCALE_1_TO_1;

   203   profControl(1);

   204 }

   205 

   206 void profCleanup()

   207 {

   208   FILE *fd;

   209   int fromindex;

   210   int endfrom;

   211   u32 frompc;

   212   int toindex;

   213   struct gmon_hdr ghdr;

   214   

   215   profControl(0);

   216   fd = fopen( "gmon.out" , "wb" );

   217   if ( fd == NULL ) {

   218     systemMessage( 0, "mcount: gmon.out" );

   219     return;

   220   }

   221 

   222   memcpy(&ghdr.cookie[0], GMON_MAGIC, 4);

   223   profPut32((char *)ghdr.version, GMON_VERSION);

   224 

   225   if(fwrite(&ghdr, sizeof(ghdr), 1, fd) != 1) {

   226     systemMessage(0, "mcount: gmon.out header");

   227     fclose(fd);

   228     return;

   229   }

   230 

   231   if(hz == 0)

   232     hz = 100;

   233 

   234   hist_num_bins = ssiz;

   235   

   236   if(profWrite8(fd, GMON_TAG_TIME_HIST) ||

   237      profWrite32(fd, (u32)s_lowpc) ||

   238      profWrite32(fd, (u32)s_highpc) ||

   239      profWrite32(fd, hist_num_bins) ||

   240      profWrite32(fd, hz) ||

   241      profWrite(fd, hist_dimension, 15) ||

   242      profWrite(fd, &hist_dimension_abbrev, 1)) {

   243     systemMessage(0, "mcount: gmon.out hist");

   244     fclose(fd);

   245     return;

   246   }

   247   u16 *hist_sample = (u16 *)sbuf;

   248 

   249   u16 count;

   250   int i;

   251   

   252   for(i = 0; i < hist_num_bins; ++i) {

   253     profPut16((char *)&count, hist_sample[i]);

   254 

   255     if(fwrite(&count, sizeof(count), 1, fd) != 1) {

   256       systemMessage(0, "mcount: gmon.out sample");

   257       fclose(fd);

   258       return;

   259     }

   260   }

   261   

   262   endfrom = s_textsize / (HASHFRACTION * sizeof(*froms));

   263   for ( fromindex = 0 ; fromindex < endfrom ; fromindex++ ) {

   264     if ( froms[fromindex] == 0 ) {

   265       continue;

   266     }

   267     frompc = s_lowpc + (fromindex * HASHFRACTION * sizeof(*froms));

   268     for (toindex=froms[fromindex]; toindex!=0; toindex=tos[toindex].link) {

   269       if(profWrite8(fd, GMON_TAG_CG_ARC) ||

   270          profWrite32(fd, (u32)frompc) ||

   271          profWrite32(fd, (u32)tos[toindex].selfpc) ||

   272          profWrite32(fd, tos[toindex].count)) {

   273         systemMessage(0, "mcount: arc");

   274         fclose(fd);

   275         return;

   276       }

   277     }

   278   }

   279   fclose(fd);

   280 }

   281 

   282 void profCount()

   283 {

   284   register u32 selfpc;

   285   register unsigned short *frompcindex;

   286   register struct tostruct *top;

   287   register struct tostruct *prevtop;

   288   register long toindex;

   289 

   290   /*

   291    * find the return address for mcount,

   292    * and the return address for mcount's caller.

   293    */

   294   

   295   /* selfpc = pc pushed by mcount call.

   296      This identifies the function that was just entered.  */

   297   selfpc = (u32) reg[14].I;

   298   /* frompcindex = pc in preceding frame.

   299      This identifies the caller of the function just entered.  */

   300   frompcindex = (unsigned short *) reg[12].I;

   301   /*

   302    * check that we are profiling

   303    * and that we aren't recursively invoked.

   304    */

   305   if (profiling) {

   306     goto out;

   307   }

   308   profiling++;

   309   /*

   310    * check that frompcindex is a reasonable pc value.

   311    * for example: signal catchers get called from the stack,

   312    *   not from text space.  too bad.

   313    */

   314   frompcindex = (unsigned short *) ((long) frompcindex - (long) s_lowpc);

   315   if ((unsigned long) frompcindex > s_textsize) {

   316     goto done;

   317   }

   318   frompcindex =

   319     &froms[((long) frompcindex) / (HASHFRACTION * sizeof(*froms))];

   320   toindex = *frompcindex;

   321   if (toindex == 0) {

   322     /*

   323      * first time traversing this arc

   324      */

   325     toindex = ++tos[0].link;

   326     if (toindex >= tolimit) {

   327       goto overflow;

   328     }

   329     *frompcindex = (unsigned short)toindex;

   330     top = &tos[toindex];

   331     top->selfpc = selfpc;

   332     top->count = 1;

   333     top->link = 0;

   334     goto done;

   335   }

   336   top = &tos[toindex];

   337   if (top->selfpc == selfpc) {

   338     /*

   339      * arc at front of chain; usual case.

   340      */

   341     top->count++;

   342     goto done;

   343   }

   344   /*

   345    * have to go looking down chain for it.

   346    * top points to what we are looking at,

   347    * prevtop points to previous top.

   348    * we know it is not at the head of the chain.

   349    */

   350   for (; /* goto done */; ) {

   351     if (top->link == 0) {

   352       /*

   353        * top is end of the chain and none of the chain

   354        * had top->selfpc == selfpc.

   355        * so we allocate a new tostruct

   356        * and link it to the head of the chain.

   357        */

   358       toindex = ++tos[0].link;

   359       if (toindex >= tolimit) {

   360         goto overflow;

   361       }

   362       top = &tos[toindex];

   363       top->selfpc = selfpc;

   364       top->count = 1;

   365       top->link = *frompcindex;

   366       *frompcindex = (unsigned short)toindex;

   367       goto done;

   368     }

   369     /*

   370      * otherwise, check the next arc on the chain.

   371      */

   372     prevtop = top;

   373     top = &tos[top->link];

   374     if (top->selfpc == selfpc) {

   375       /*

   376        * there it is.

   377        * increment its count

   378        * move it to the head of the chain.

   379        */

   380       top->count++;

   381       toindex = prevtop->link;

   382       prevtop->link = top->link;

   383       top->link = *frompcindex;

   384       *frompcindex = (unsigned short)toindex;

   385       goto done;

   386     }

   387     

   388   }

   389  done:

   390   profiling--;

   391   /* and fall through */

   392  out:

   393   return;  /* normal return restores saved registers */

   394   

   395  overflow:

   396   profiling++; /* halt further profiling */

   397 #define TOLIMIT "mcount: tos overflow\n"

   398   systemMessage(0, TOLIMIT);

   399   goto out;

   400 }

   401 

   402 void profSetHertz(int h)

   403 {

   404   hz = h;

   405 }
author	Robert McIntyre <rlm@mit.edu>
date	Tue, 27 Mar 2012 21:08:44 -0500
parents	f9f4f1b99eed
children