BIOS入门之我见-内存

#include "display.h" #include "mem.h" #include "keys.h" #include <i86.h> #include <bios.h> #include <ctype.h> //union buf_tag buffer; union point_tag { unsigned char *pb; unsigned short *pw; unsigned long *pd; unsigned long d; } pmem; int memory_dump() { int index = -1; int enterpress = 1; int exit = -2; UINT32 memaddr = 0; UINT32 findaddr = 0; UINT32 searchstart = 0; UINT32 searchend = 0xFFFFF; UINT8 searchalign = 4; unsigned char offset = 0; char searchstring[17] = {0}; char searchhex[16] = {0}; int searchstrindex = 0; int hexsearch = 0; int showallcode = 0; int i, j, n, m; UINT8 color; int keycode; int keys = 0; enum TYPE showtype = BYTE1; UINT8 buffer_byte=0; UINT16 buffer_word=0; UINT32 buffer_dword=0; //int addrselect = LIGHTGREEN; //enum TYPE showtype = BYTE1; //show X Y role for Data area. for( i = 0 ; i<16; i++) color_printf( 3, 4+3*i, B_BLUE+F_LIGHT_RED, "%2.2X" ,i ); for( i = 0 ; i<16; i++) color_printf( 4+i, 1, B_BLUE+F_LIGHT_RED, "%2.2X" ,i*16 ); //show address enter place. color_printf( 22, 15, B_BLUE+F_LIGHT_WHITE, "Address: "); //show ascii code. color_printf( 3, 55, B_BLUE+F_LIGHT_RED,"ASCII Code"); //show search area color_printf( 3, 71, B_BLUE+F_LIGHT_RED,"Search"); color_printf( 4, 69, B_BLUE+F_WHITE,"Start:"); color_printf( 6, 69, B_BLUE+F_WHITE,"End:"); color_printf( 8, 69, B_BLUE+F_WHITE,"Align:"); for(i=0;i<80;i++) color_printf( 24, i, B_WHITE + F_BLACK, " "); color_printf( 24, 0, B_WHITE + F_BLACK, " 'ESC'->Menu Ctrl+E->Enter Address Ctrl+S->Searsh String Ctrl+X->Searsh Hex"); color_printf( 24, 2, B_WHITE + F_LIGHT_RED, "ESC"); color_printf( 24, 14, B_WHITE + F_LIGHT_RED, "Ctrl+E"); color_printf( 24, 37, B_WHITE + F_LIGHT_RED, "Ctrl+S"); color_printf( 24, 60, B_WHITE + F_LIGHT_RED, "Ctrl+X"); while(1){ color_printf( 22, 24,(index == -1)?B_GRAY+F_LIGHT_WHITE:B_BLUE+F_LIGHT_WHITE, " 0x%8.8X " ,memaddr ); if( index >=0 && index<0x100 ) color_printf( 3 , 1, B_BLUE+F_LIGHT_GREEN, "%.2X", index); else color_printf( 3, 1, B_BLUE," "); color_printf( 10, 69, B_BLUE+F_WHITE,(hexsearch)?"Hex: ":"String:"); color_printf( 5, 69, (index == 0x100)? B_GRAY+F_LIGHT_WHITE:B_BLUE+F_LIGHT_WHITE, "0x%8.8X" ,searchstart); color_printf( 7, 69, (index == 0x101)? B_GRAY+F_LIGHT_WHITE:B_BLUE+F_LIGHT_WHITE, "0x%8.8X" ,searchend); color_printf( 9, 69, (index == 0x102)? B_GRAY+F_LIGHT_WHITE:B_BLUE+F_LIGHT_WHITE, "0x%2.2X" ,searchalign); color_printf( 11,69, (index == 0x103)? B_GRAY+F_LIGHT_WHITE:B_WHITE+F_WHITE, " " ); color_printf( 12,69, (index == 0x103)? B_GRAY+F_LIGHT_WHITE:B_WHITE+F_WHITE, " " ); if( searchstrindex < 8){ for(i = 0; i<searchstrindex;i++) color_printf( 11,70+i, B_GRAY+F_LIGHT_WHITE, "%c" ,searchstring[i]); } else{ for(i = 0; i< 8; i++) color_printf( 11,70+i, B_GRAY+F_LIGHT_WHITE, "%c" ,searchstring[i]); for(i = 8; i<searchstrindex ; i++) color_printf( 12,70+(i-8), B_GRAY+F_LIGHT_WHITE, "%c" ,searchstring[i]); } if( enterpress ){ pmem.d = memaddr; } //Display Data Value. for( i = 0; i<16; i++){ if(showtype == 1){ for ( j =0 ; j<16; j++){ if( pmem.pb[i*16+j] == 0xFF) color = B_BLUE + F_LIGHT_WHITE; else if( pmem.pb[i*16+j] == 0x00) color = B_BLUE + F_GRAY; else color = B_BLUE + F_YELLOW; if( index == i*16+j){ color = color & 0x0F | B_LIGHT_RED; if(enterpress) buffer_byte = pmem.pb[index]; show_buffer_byte(buffer_byte,20,1); color_printf ( i+4, 3*j+4, color,"%2.2X", buffer_byte); if(isalnum(buffer_byte)) color_printf ( i+4, j + 52, B_BLUE+F_WHITE, "%c", buffer_byte); else color_printf ( i+4, j + 52, B_BLUE+F_WHITE, "."); } else{ color_printf ( i+4, 3*j+4, color,"%2.2X", pmem.pb[i*16+j]); if(isalnum(pmem.pb[i*16+j])) color_printf ( i+4, j + 52, B_BLUE+F_WHITE, "%c", pmem.pb[i*16+j]); else{ if(showallcode) color_printf ( i+4, j + 52, B_BLUE+F_WHITE, "%c", pmem.pb[i*16+j]); else color_printf ( i+4, j + 52, B_BLUE+F_WHITE, "."); } } } } if(showtype == 2){ for ( j =0 ; j<8; j++){ if( pmem.pw[i*8+j] == 0xFFFF) color = B_BLUE + F_LIGHT_WHITE; else if( pmem.pw[i*8+j] == 0x0000) color = B_BLUE + F_GRAY; else color = B_BLUE + F_YELLOW; if( index/2 == i*8+j){ color = color & 0x0F | B_LIGHT_RED; if(enterpress) buffer_word = pmem.pw[index/2]; show_buffer_word(buffer_word,20,1); color_printf ( i+4, 6*j+4, color,"%4.4X", buffer_word); //color_printf ( i+4, j + 55, B_BLUE+F_WHITE, "%c", buffer_byte); } else{ color_printf ( i+4, 6*j+4, color,"%4.4X", pmem.pw[i*8+j]); //color_printf ( i+4, j + 55, B_BLUE+F_WHITE, "%c", pmem.pb[i*16+j]); } } } if(showtype == 4){ for ( j =0 ; j<4; j++){ if( pmem.pd[i*4+j] == 0xFFFFFFFF) color = B_BLUE + F_LIGHT_WHITE; else if( pmem.pd[i*4+j] == 0x00000000) color = B_BLUE + F_GRAY; else color = B_BLUE + F_YELLOW; if( index/4 == i*4+j){ color = color & 0x0F | B_LIGHT_RED; if(enterpress) buffer_dword = pmem.pd[index/4]; show_buffer_dword(buffer_dword,20,1); color_printf ( i+4, 12*j+4, color,"%8.8X", buffer_dword); //color_printf ( i+4, j + 55, B_BLUE+F_WHITE, "%c", buffer_byte); } else{ color_printf ( i+4, 12*j+4, color,"%8.8X", pmem.pd[i*4+j]); //color_printf ( i+4, j + 55, B_BLUE+F_WHITE, "%c", pmem.pb[i*16+j]); } } } } // check keyboard input. keys = check_keys_input(&keycode); //color_printf(23, 70, B_BLUE+F_YELLOW,"%X",keycode); // keys is number. if( keys & 0x01){ enterpress = 0; if(index == -1) memaddr = (memaddr << 4) | ascii_to_hexdigit(keycode); if(index>=0&& index<0x100){ if(showtype == 1) buffer_byte = (buffer_byte << 4) | ascii_to_hexdigit(keycode);