#include __attribute__((section(".multiboot")))uint32_t mb[3]={0x1BADB002,0x00010003,-(0x1BADB002+0x00010003)}; static inline uint8_t inb(uint16_t p){uint8_t r;__asm__("inb %1,%0":"=a"(r):"Nd"(p));return r;} static inline void outb(uint16_t p,uint8_t v){__asm__("outb %0,%1": :"a"(v),"Nd"(p));} // French AZERTY keyboard scan code to character mapping (from vgatexteditor.c) static const char KMAP[] = { 0,0,'1','2','3','4','5','6','7','8','9','0','-','=','\b', 0,'a','z','e','r','t','y','u','i','o','p','^','$','\n', 0,'q','s','d','f','g','h','j','k','l','m','%','*', 0,0,'w','x','c','v','b','n',',',';',':','!','\'', }; // Arial-like font: 7 rows x 5 cols, raw bytes (MSB=left) static const uint8_t F[95*7] = { // !"#$%&'()*+,-./ 0x3E,0x41,0x41,0x41,0x41,0x41,0x3E, // ! 0x7F,0x49,0x49,0x49,0x49,0x41,0x3F, // " 0x00,0x6C,0xFE,0x6C,0x00,0x00,0x00, // # 0x18,0x3E,0x99,0x7E,0x18,0x00,0x00, // $ 0xC6,0xC6,0x00,0x30,0x66,0x66,0x00, // % 0xC6,0xC6,0x1C,0x36,0x67,0x36,0x00, // & 0x18,0x3C,0x18,0x00,0x00,0x00,0x00, // ' 0x0C,0x18,0x18,0x18,0x18,0x0C,0x00, // ( 0x18,0x0C,0x0C,0x0C,0x0C,0x18,0x00, // ) 0x6C,0xFF,0x36,0xFF,0x6C,0x00,0x00, // * 0x18,0x18,0x7E,0x18,0x18,0x00,0x00, // + 0x00,0x06,0x0C,0x06,0x00,0x00,0x00, // , 0x00,0x00,0x7E,0x00,0x00,0x00,0x00, // - 0x00,0x00,0x06,0x00,0x00,0x00,0x00, // . 0x06,0x0C,0x18,0x30,0x60,0x00,0x00, // / // 0-9 0x3C,0x66,0x66,0x66,0x3C,0x00,0x00, // 0 0x18,0x38,0x18,0x18,0x7E,0x00,0x00, // 1 0x3C,0x66,0x06,0x0C,0x78,0x00,0x00, // 2 0x3C,0x66,0x0C,0x66,0x3C,0x00,0x00, // 3 0x18,0x3C,0x66,0x7E,0x06,0x00,0x00, // 4 0x78,0x0C,0x78,0x66,0x3C,0x00,0x00, // 5 0x3C,0x0C,0x78,0x66,0x3C,0x00,0x00, // 6 0x7E,0x66,0x0C,0x0C,0x0C,0x00,0x00, // 7 0x3C,0x66,0x0C,0x18,0x3C,0x00,0x00, // 8 0x3C,0x66,0x06,0x0C,0x38,0x00,0x00, // 9 // :;<=>?@ 0x00,0x00,0x7E,0x00,0x00,0x00,0x00, // : 0x06,0x0C,0x18,0x0C,0x06,0x00,0x00, // ; 0x06,0x0C,0x18,0x0C,0x06,0x00,0x00, // < 0x00,0x00,0x7E,0x00,0x00,0x00,0x00, // = 0x06,0x0C,0x18,0x0C,0x06,0x00,0x00, // > 0x3C,0x66,0x06,0x0C,0x18,0x00,0x00, // ? 0x1C,0x36,0x63,0x7E,0x66,0x3E,0x00, // @ // A-Z 0x18,0x3C,0x66,0x66,0x66,0x3C,0x00, // A 0x78,0x66,0x78,0x66,0x78,0x00,0x00, // B 0x3C,0x66,0x60,0x60,0x60,0x3C,0x00, // C 0x78,0x66,0x66,0x66,0x78,0x00,0x00, // D 0x7E,0x06,0x7C,0x06,0x06,0x00,0x00, // E 0x7E,0x06,0x7C,0x06,0x06,0x00,0x00, // F 0x3C,0x66,0x60,0x66,0x3C,0x18,0x00, // G 0x66,0x66,0x7E,0x66,0x66,0x00,0x00, // H 0x3C,0x18,0x18,0x18,0x3C,0x00,0x00, // I 0x1E,0x06,0x06,0x66,0x3C,0x00,0x00, // J 0x66,0x6C,0x78,0x6C,0x66,0x00,0x00, // K 0x06,0x06,0x06,0x06,0x7E,0x00,0x00, // L 0x63,0x77,0x7F,0x6B,0x63,0x00,0x00, // M 0x61,0x73,0x7B,0x6F,0x67,0x00,0x00, // N 0x3C,0x66,0x66,0x66,0x3C,0x00,0x00, // O 0x78,0x66,0x78,0x06,0x06,0x00,0x00, // P 0x3C,0x66,0x66,0x6E,0x3E,0x1C,0x00, // Q 0x78,0x66,0x78,0x6C,0x66,0x00,0x00, // R 0x3C,0x66,0x0C,0x66,0x3C,0x00,0x00, // S 0x7E,0x18,0x18,0x18,0x3C,0x00,0x00, // T 0x66,0x66,0x66,0x66,0x3C,0x00,0x00, // U 0x66,0x66,0x3C,0x18,0x18,0x00,0x00, // V 0x63,0x63,0x7F,0x63,0x63,0x00,0x00, // W 0x66,0xC6,0x3C,0xC6,0x66,0x00,0x00, // X 0x66,0x66,0x1C,0x18,0x18,0x00,0x00, // Y 0x7E,0x66,0x0C,0x06,0x7E,0x00,0x00, // Z // [ \ ] ^ _ ` 0x18,0x3C,0x66,0x00,0x00,0x00,0x00, // [ 0x60,0x30,0x18,0x0C,0x06,0x00,0x00, // \ 0x00,0x00,0x66,0x3C,0x18,0x00,0x00, // ] 0x18,0x3C,0x18,0x00,0x00,0x00,0x00, // ^ 0x60,0x30,0x00,0x00,0x00,0x00,0x00, // _ 0x18,0x3C,0x18,0x00,0x00,0x00,0x00, // ` // a-z 0x00,0x18,0x3C,0x66,0x66,0x00,0x00, // a 0x06,0x0C,0x18,0x3C,0x06,0x00,0x00, // b 0x00,0x18,0x30,0x30,0x18,0x00,0x00, // c 0x0C,0x06,0x06,0x06,0x3C,0x00,0x00, // d 0x00,0x18,0x7E,0x60,0x3C,0x00,0x00, // e 0x18,0x3C,0x18,0x18,0x0C,0x00,0x00, // f 0x00,0x18,0x3C,0x66,0x7E,0x06,0x00, // g 0x06,0x0C,0x18,0x18,0x18,0x00,0x00, // h 0x18,0x00,0x18,0x18,0x3C,0x00,0x00, // i 0x06,0x00,0x06,0x06,0x3C,0x00,0x00, // j 0x06,0x0C,0x18,0x18,0x0C,0x00,0x00, // k 0x18,0x18,0x18,0x18,0x3C,0x00,0x00, // l 0x00,0x18,0x3C,0x66,0x7E,0x66,0x00, // m 0x00,0x18,0x1C,0x1E,0x18,0x00,0x00, // n 0x00,0x18,0x30,0x30,0x18,0x00,0x00, // o 0x00,0x7C,0x66,0x7C,0x06,0x00,0x00, // p 0x00,0x06,0x3C,0x66,0x7C,0x18,0x00, // q 0x00,0x18,0x3C,0x06,0x00,0x00,0x00, // r 0x00,0x18,0x30,0x78,0x0C,0x00,0x00, // s 0x1C,0x18,0x3C,0x18,0x18,0x00,0x00, // t 0x06,0x06,0x06,0x06,0x3C,0x00,0x00, // u 0x06,0x06,0x18,0x3C,0x06,0x00,0x00, // v 0x06,0x06,0x18,0x3C,0x18,0x00,0x00, // w 0x06,0x0C,0x30,0x0C,0x06,0x00,0x00, // x 0x00,0x18,0x30,0x7E,0x06,0x00,0x00, // y 0x00,0x7E,0x66,0x0C,0x7E,0x00,0x00, // z // { | } ~ 0x0C,0x18,0x18,0x18,0x18,0x0C,0x00, // { 0x18,0x18,0x18,0x18,0x18,0x00,0x00, // | 0x18,0x18,0x18,0x18,0x0C,0x18,0x00, // } 0x60,0xC0,0x60,0x00,0x00,0x00,0x00, // ~ }; volatile uint32_t *fb; int pitch=2560, w=640, h=480; // Draw single character at pixel position with scaling void dc(int x, int y, char c, uint32_t fg) { if(c < ' ' || c > '~') return; int idx = (c - 32) * 7; const int scale = 4; for(int row = 0; row < 7; row++) { uint8_t b = F[idx + row]; for(int col = 0; col < 5; col++) { if(b & (1 << (4 - col))) { int sx = x + col * scale; int sy = y + row * scale; for(int dy = 0; dy < scale; dy++) { for(int dx = 0; dx < scale; dx++) { int px = sx + dx, py = sy + dy; if(px >= 0 && px < w && py >= 0 && py < h) fb[py * pitch / 4 + px] = fg; } } } } } } void dt(int x, int y, char *s, uint32_t fg) { while(*s) dc(x, y, *s++, fg); } // Line buffer and cursor state char L[25][80]; int l[25], cl = 0, cc = 0; void R() { // Clear framebuffer with dark background for(int j = 0; j < h * pitch / 4; j++) fb[j] = 0x1A1A2E; // Draw header bar for(int x = 0; x < w; x++) for(int y = 0; y < 32; y++) fb[y * pitch / 4 + x] = 0x1E1E4E; dt(10, 8, "TEXT EDITOR", 0x00FF00); // Render each line for(int j = 0; j < 25; j++) { int ly = j * 32 + 40; // Line number char n[3]; n[0] = (j / 10) + '0'; n[1] = (j % 10) + '0'; n[2] = 0; dt(5, ly, n, 0x8888AA); // Line content for(int k = 0; k < l[j] && k < 78; k++) { int cx = 40 + k * 24; if(cx > w - 20) break; dc(cx, ly, L[j][k], 0xE94560); } // Cursor highlight if(j == cl) { int cx = 40 + cc * 24; for(int py = ly; py < ly + 32 && py < h; py++) for(int px = cx; px < cx + 16 && px < w; px++) fb[py * pitch / 4 + px] = 0xFFFFFF; } } } void H(uint8_t s) { if(s == 1 || s & 0x80) return; // Escape sequence state machine static int e = 0; if(e == 0) { if(s == 27) e = 1; } else if(e == 1) { if(s == '[') e = 2; else e = 0; } else if(e == 2) { e = 0; if(s == 'A' && cl > 0) cl--; else if(s == 'B' && cl < 24) cl++; else if(s == 'C' && cc <= l[cl]) cc++; else if(s == 'D' && cc > 0) cc--; } if(e) { R(); return; } // Raw scan code handling for arrow keys if(!e) { if(s == 0x48 && cl > 0) cl--; else if(s == 0x50 && cl < 24) cl++; else if(s == 0x4B && cc > 0) cc--; else if(s == 0x4D && cc <= l[cl]) cc++; } if(e) { R(); return; } // Backspace (0x0E) if(s == 0x0E) { if(cc > 0) { for(int j = cc; j < l[cl]; j++) L[cl][j-1] = L[cl][j]; l[cl]--; L[cl][l[cl]] = 0; cc--; } else if(cl > 0) { int p = l[cl-1], c = l[cl]; for(int j = 0; j <= c; j++) L[cl-1][p+j] = L[cl][j]; l[cl-1] += c; for(int j = cl; j < 24; j++) { l[j] = l[j+1]; for(int k = 0; k <= l[j+1]; k++) L[j][k] = L[j+1][k]; } cl--; } } else if(s == 0x1C) { // Enter int r = l[cl] - cc; for(int j = 24; j > cl; j--) { l[j] = l[j-1]; for(int k = 0; k <= l[j-1]; k++) L[j][k] = L[j-1][k]; } if(r > 0) for(int j = 0; j < r; j++) L[cl+1][j] = L[cl][cc+j]; l[cl+1] = r; L[cl+1][r] = 0; l[cl] = cc; L[cl][cc] = 0; cl++; cc = 0; } else if(s < 128 && KMAP[s]) { char c = KMAP[s]; if(cc < 78) { for(int j = l[cl]+1; j > cc; j--) L[cl][j] = L[cl][j-1]; L[cl][cc] = c; l[cl]++; cc++; } } R(); } void kernel_main(uint32_t m, uint32_t i) { if(m != 0x2BADB002) while(1); // Set VGA mode via BIOS interrupt (same as svgatexteditor.c) uint8_t vf = 0x4F; __asm__("outb %0,%1" : : "a"(vf), "d"((uint16_t)0x01CF)); vf = 0x15; __asm__("outb %0,%1" : : "a"(vf), "d"((uint16_t)0x01CE)); fb = (volatile uint32_t*)0xE0000000; // Initialize lines for(int j = 0; j < 25; j++) { l[j] = 0; L[j][0] = 0; } R(); while(1) { while(!(inb(0x64) & 1)); H(inb(0x60)); } }