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lxdream.org :: lxdream/src/util.c
lxdream 0.9.1
released Jun 29
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filename src/util.c
changeset 1092:7c4ffe27e7b5
prev1091:186558374345
next1148:8e75fab17be8
author nkeynes
date Sun Dec 20 21:01:03 2009 +1000 (12 years ago)
permissions -rw-r--r--
last change Fix 64-bit x86 disassembly
Add crash-report hook to SIGILL and SIGBUS
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     1 /**
     2  * $Id$
     3  *
     4  * Miscellaneous utility functions.
     5  *
     6  * Copyright (c) 2005 Nathan Keynes.
     7  *
     8  * This program is free software; you can redistribute it and/or modify
     9  * it under the terms of the GNU General Public License as published by
    10  * the Free Software Foundation; either version 2 of the License, or
    11  * (at your option) any later version.
    12  *
    13  * This program is distributed in the hope that it will be useful,
    14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
    15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    16  * GNU General Public License for more details.
    17  */
    19 #define HAVE_EXECINFO_H 1
    21 #include <assert.h>
    22 #include <ctype.h>
    23 #include <stdarg.h>
    24 #include <stdio.h>
    25 #include <stdlib.h>
    26 #include <signal.h>
    27 #include <time.h>
    28 #include <zlib.h>
    29 #include <glib.h>
    30 #include <png.h>
    31 #include "dream.h"
    32 #include "display.h"
    33 #include "dreamcast.h"
    34 #include "gui.h"
    35 #include "sh4/sh4.h"
    37 char *msg_levels[] = { "FATAL", "ERROR", "WARN", "INFO", "DEBUG", "TRACE" };
    38 int global_msg_level = EMIT_WARN;
    40 static void report_crash( int signo, siginfo_t *info, void *ptr )
    41 {
    42     char buf[128];
    44     fprintf( stderr, "--- Aborting with signal %d ---\n", signo );
    45     sh4_crashdump();
    46     // Get gdb to print a nice backtrace for us
    47     snprintf( buf, 128, "gdb -batch -f --quiet --pid=%d -ex bt", getpid() );
    48     system(buf);
    50     abort();
    51 }
    53 void install_crash_handler(void)
    54 {
    55     struct sigaction sa;
    57     sa.sa_sigaction = report_crash;
    58     sigemptyset(&sa.sa_mask);
    59     sa.sa_flags = SA_RESETHAND|SA_SIGINFO;
    60     sigaction( SIGSEGV, &sa, NULL );
    61     sigaction( SIGILL, &sa, NULL );
    62     sigaction( SIGBUS, &sa, NULL );
    63 }
    66 void fwrite_string( const char *s, FILE *f )
    67 {
    68     uint32_t len = 0;
    69     if( s == NULL ) {
    70         fwrite( &len, sizeof(len), 1, f );
    71     } else {
    72         len = strlen(s)+1;
    73         fwrite( &len, sizeof(len), 1, f );
    74         fwrite( s, len, 1, f );
    75     }
    76 }
    78 int fread_string( char *s, int maxlen, FILE *f ) 
    79 {
    80     uint32_t len;
    81     fread( &len, sizeof(len), 1, f );
    82     if( len != 0 ) {
    83         fread( s, len > maxlen ? maxlen : len, 1, f );
    84     }
    85     return len;
    86 }
    88 int fwrite_gzip( void *p, size_t sz, size_t count, FILE *f )
    89 {
    90     uLongf size = sz*count;
    91     uLongf csize = ((int)(size*1.001))+13;
    92     unsigned char *tmp = g_malloc0( csize );
    93     int status = compress( tmp, &csize, p, size );
    94     assert( status == Z_OK );
    95     uint32_t wsize = (uint32_t)csize;
    96     fwrite( &wsize, sizeof(wsize), 1, f );
    97     int written = fwrite( tmp, csize, 1, f );
    98     g_free(tmp);
   100     /* Could be finer-grained, but this is enough to know it succeeded/failed */
   101     if( written == 1 ) {
   102         return count;
   103     } else {
   104         return 0;
   105     }
   106 }
   108 int fread_gzip( void *p, size_t sz, size_t count, FILE *f )
   109 {
   110     uLongf size = sz*count;
   111     uint32_t csize;
   112     unsigned char *tmp;
   114     fread( &csize, sizeof(csize), 1, f );
   115     assert( csize <= (size*2) );
   116     tmp = g_malloc0( csize );
   117     fread( tmp, csize, 1, f );
   118     int status = uncompress( p, &size, tmp, csize );
   119     g_free(tmp);
   120     if( status == Z_OK ) {
   121         return count;
   122     } else {
   123         fprintf( stderr, "Error reading compressed data\n" );
   124         return 0;
   125     }
   126 }
   128 void fwrite_dump( unsigned char *data, unsigned int length, FILE *f ) 
   129 {
   130     unsigned int i, j;
   131     for( i =0; i<length; i+=16 ) {
   132         fprintf( f, "%08X:", i);
   133         for( j=i; j<i+16; j++ ) {
   134             if( (j % 4) == 0 )
   135                 fprintf( f, " " );
   136             if( j < length )
   137                 fprintf( f, " %02X", (unsigned int)(data[j]) );
   138             else
   139                 fprintf( f, "   " );
   140         }
   141         fprintf( f, "  " );
   142         for( j=i; j<i+16 && j<length; j++ ) {
   143             fprintf( f, "%c", isprint(data[j]) ? data[j] : '.' );
   144         }
   145         fprintf( f, "\n" );
   146     }
   147 }
   149 void fwrite_dump32( unsigned int *data, unsigned int length, FILE *f ) 
   150 {
   151     fwrite_dump32v( data, length, 8, f );
   152 }
   154 void fwrite_dump32v( unsigned int *data, unsigned int length, int wordsPerLine, FILE *f ) 
   155 {
   156     unsigned int i, j;
   157     for( i =0; i<length>>2; i+=wordsPerLine ) {
   158         fprintf( f, "%08X:", i);
   159         for( j=i; j<i+wordsPerLine; j++ ) {
   160             if( j < length )
   161                 fprintf( f, " %08X", (unsigned int)(data[j]) );
   162             else
   163                 fprintf( f, "         " );
   164         }
   165         fprintf( f, "\n" );
   166     }
   167 }
   169 gboolean write_png_to_stream( FILE *f, frame_buffer_t buffer )
   170 {
   171     int coltype, i;
   172     png_bytep p;
   173     png_structp png_ptr = png_create_write_struct(PNG_LIBPNG_VER_STRING, NULL, NULL, NULL);
   174     if (!png_ptr) {
   175         return FALSE;
   176     }
   178     png_infop info_ptr = png_create_info_struct(png_ptr);
   179     if (!info_ptr) {
   180         png_destroy_write_struct(&png_ptr, NULL);
   181         return FALSE;
   182     }
   184     if( setjmp(png_jmpbuf(png_ptr)) ) {
   185         png_destroy_write_struct(&png_ptr, &info_ptr);
   186         return FALSE;
   187     }
   188     png_init_io( png_ptr, f );
   189     switch( buffer->colour_format ) {
   190     case COLFMT_BGR888:
   191         coltype = PNG_COLOR_TYPE_RGB;
   192         break;
   193     case COLFMT_BGRA8888:
   194         coltype = PNG_COLOR_TYPE_RGB_ALPHA;
   195         break;
   196     case COLFMT_BGR0888:
   197         coltype = PNG_COLOR_TYPE_RGB;
   198         break;
   199     default:
   200         coltype = PNG_COLOR_TYPE_RGB;
   201     }
   202     png_set_IHDR(png_ptr, info_ptr, buffer->width, buffer->height,
   203                  8, coltype, PNG_INTERLACE_NONE, 
   204                  PNG_COMPRESSION_TYPE_DEFAULT, 
   205                  PNG_FILTER_TYPE_DEFAULT );
   206     png_write_info(png_ptr, info_ptr);
   207     if( buffer->colour_format == COLFMT_BGR0888 ) {
   208         png_set_filler(png_ptr, 0, PNG_FILLER_AFTER);
   209     }
   210     png_set_bgr(png_ptr);
   211     if( buffer->inverted ) {
   212         p = (png_bytep)(buffer->data + (buffer->height*buffer->rowstride) - buffer->rowstride);
   213         for(i=0; i<buffer->height; i++ ) {
   214             png_write_row(png_ptr, p);
   215             p-=buffer->rowstride;
   216         }
   217     } else {
   218         p = (png_bytep)buffer->data;
   219         for(i=0; i<buffer->height; i++ ) {
   220             png_write_row(png_ptr, p);
   221             p+=buffer->rowstride;
   222         }
   223     }
   224     png_write_end(png_ptr, info_ptr);
   225     png_destroy_write_struct(&png_ptr, &info_ptr);
   226     return TRUE;
   227 }
   229 frame_buffer_t read_png_from_stream( FILE *f )
   230 {
   231     png_bytep p;
   232     int i;
   233     png_structp png_ptr = png_create_read_struct(PNG_LIBPNG_VER_STRING, 
   234             NULL, NULL, NULL);
   235     if (!png_ptr) {
   236         return NULL;
   237     }
   239     png_infop info_ptr = png_create_info_struct(png_ptr);
   240     if (!info_ptr) {
   241         png_destroy_read_struct(&png_ptr, NULL, NULL);
   242         return NULL;
   243     }
   245     png_infop end_info = png_create_info_struct(png_ptr);
   246     if (!end_info) {
   247         png_destroy_read_struct(&png_ptr, &info_ptr, NULL );
   248         return NULL;
   249     }
   251     if( setjmp(png_jmpbuf(png_ptr)) ) {
   252         png_destroy_read_struct(&png_ptr, &info_ptr, &end_info);
   253         return NULL;
   254     }
   256     png_init_io(png_ptr, f);
   257     png_read_info(png_ptr, info_ptr);
   259     png_uint_32 width, height;
   260     int bit_depth, color_type, interlace_type,
   261     compression_type, filter_method;
   262     png_get_IHDR(png_ptr, info_ptr, &width, &height,
   263                  &bit_depth, &color_type, &interlace_type,
   264                  &compression_type, &filter_method);
   265     assert( interlace_type == PNG_INTERLACE_NONE );
   266     int rowbytes = png_get_rowbytes(png_ptr, info_ptr);
   267     int channels = png_get_channels(png_ptr, info_ptr);
   268     frame_buffer_t buffer = g_malloc( sizeof(struct frame_buffer) + rowbytes*height );
   269     buffer->data = (unsigned char *)(buffer+1);
   270     buffer->width = width;
   271     buffer->height = height;
   272     buffer->rowstride = rowbytes;
   273     buffer->address = -1;
   274     buffer->size = rowbytes*height;
   275     buffer->inverted = FALSE;
   276     if( channels == 4 ) {
   277         buffer->colour_format = COLFMT_BGRA8888;
   278     } else if( channels == 3 ) {
   279         buffer->colour_format = COLFMT_RGB888;
   280     }
   282     p = (png_bytep)buffer->data;
   283     for( i=0; i<height; i++ ) {
   284         png_read_row(png_ptr, p, NULL );
   285         p += rowbytes;
   286     }
   288     png_read_end(png_ptr, end_info);
   289     png_destroy_read_struct(&png_ptr, &info_ptr, &end_info);
   290     return buffer;
   291 }
   293 int get_log_level_from_string( const gchar *str )
   294 {
   295     switch( tolower(str[0]) ) {
   296     case 'd': return EMIT_DEBUG;
   297     case 'e': return EMIT_ERR;
   298     case 'f': return EMIT_FATAL;
   299     case 'i': return EMIT_INFO;
   300     case 't': return EMIT_TRACE;
   301     case 'w': return EMIT_WARN;
   302     default: return -1;
   303     }
   304 }
   306 gboolean set_global_log_level( const gchar *str ) 
   307 {
   308     int l = get_log_level_from_string(str);
   309     if( l == -1 ) {
   310         return FALSE;
   311     } else {
   312         global_msg_level = l;
   313         return TRUE;
   314     }
   315 }
   317 void log_message( void *ptr, int level, const gchar *source, const char *msg, ... )
   318 {
   319     char buf[20];
   320     time_t tm = time(NULL);
   321     va_list ap;
   323     if( level > global_msg_level ) {
   324         return; // ignored
   325     }
   327     va_start(ap, msg);
   328     gchar *text = g_strdup_vprintf( msg, ap );
   329     va_end(ap);
   331     if( level <= EMIT_ERR ) {
   332         if( gui_error_dialog( text ) ) {
   333             g_free(text);
   334             // If we're running, halt on error to avoid potentially flooding
   335             // the user with error messages.
   336             if( dreamcast_is_running() ) {
   337                 dreamcast_stop();
   338             }
   339             return;
   340         }
   341     }
   344     strftime( buf, sizeof(buf), "%H:%M:%S", localtime(&tm) );
   345     fprintf( stderr, "%s %08X %-5s %s\n", buf, sh4r.pc, msg_levels[level], text );
   346     g_free(text);
   347 }
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