291 lines
7.5 KiB
C
291 lines
7.5 KiB
C
/*******************************************************************************/
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/* COS2000 - Compatible Operating System - LGPL v3 - Hordé Nicolas */
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/* */
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#include "vga.h"
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#include "video.h"
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#include "interrupts.h"
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#include "asm.h"
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#include "cpu.h"
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#include "string.h"
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#include "2d.h"
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#include "gdt.h"
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#include "shell.h"
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#include "multiboot2.h"
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static command commands[] = {
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{"REBOOT" , "", &rebootnow},
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{"CLEAR" , "", &clear},
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{"MODE" , "", &mode},
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{"DETECTCPU" , "", &detectcpu},
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{"TEST2D" , "", &test2d},
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{"REGS" , "", ®s},
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{"GDT" , "", &readgdt},
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{"IDT" , "", &readidt},
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{"INFO" , "", &info},
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{"PGFAULTW" , "", &pgfaultw},
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{"PGFAULTR" , "", &pgfaultr},
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{"DIVZERR" , "", &divzerr},
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{"INVALIDOP","", &invalidop},
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{"INT3" , "", &int3},
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{"GENERALFAULT" , "", &generalfault},
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{"SEGFAULT","", &segfault},
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{"BREAKPOINT","", &breakpoint},
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{"TESTING","", &testing}
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};
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/*******************************************************************************/
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/* Shell, traite les commandes */
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void shell()
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{
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static u8 field[] =
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" \000";
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static u8 item[] = " \000";
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int i;
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bool found;
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while (true) {
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print("\r\n# ");
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getstring(&field);
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print("\r\n");
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if (strgetnbitems(&field, ' ') < 1)
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continue;
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strgetitem(&field, &item, ' ', 0);
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strtoupper(&item);
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found = false;
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for (i = 0; i < sizeof(commands); i++) {
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if (strcmp(&item, &commands[i].name) == 0) {
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(*commands[i].function) ();
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found = true;
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break;
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}
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}
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if (!found)
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printf("Commande inconnue !\r\n\000");
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}
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}
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void testing(void)
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{
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print("Fonction de test !\r\n");
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}
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/*******************************************************************************/
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/* Génère un breakpoint */
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int breakpoint()
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{
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print("Creation d'un breakpoint !\r\n");
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asm("movl %[address],%%dr0 \n \
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movl $0x00000003, %%eax\n \
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movl %%eax, %%dr7"::[address] "a" (&testing):);
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}
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/*******************************************************************************/
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/* Génère une interruption 3 */
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int int3()
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{
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print("Creation d'une erreur interruption 3 !\r\n");
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asm("int $0x3");
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}
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/*******************************************************************************/
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/* Génère une erreur general fault */
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int generalfault()
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{
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print("Creation d'une erreur general fault !\r\n");
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asm("mov $0x666, %ax; ltr %ax");
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}
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/*******************************************************************************/
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/* Génère une erreur double fault */
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int segfault()
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{
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print("Creation d'une erreur double fault !\r\n");
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setidt(&segfault, SEL_KERNEL_CODE, INTGATE, 104);
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asm("int $0x68");
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}
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/*******************************************************************************/
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/* Génère une erreur d'opcode invalide */
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int invalidop()
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{
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print("Creation d'une erreur d'opcode invalide !\r\n");
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asm("mov %cr7, %eax");
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}
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/*******************************************************************************/
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/* Génère une erreur de division par 0 */
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int divzerr()
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{
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print("Creation d'une erreur de division par 0 !\r\n");
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asm("movl $0x0,%ecx; divl %ecx");
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}
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/*******************************************************************************/
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/* Génère une erreur de page à l'adresse 0xE0000000 */
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int pgfaultw()
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{
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print("Creation d'une erreur de page !\r\n");
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asm("movl $0x66666666,(0xE0000000)");
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}
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/*******************************************************************************/
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/* Génère une erreur de page à l'adresse 0xD0000000 */
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int pgfaultr()
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{
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print("Creation d'une erreur de page !\r\n");
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asm("movl (0xD0000000),%eax");
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}
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/*******************************************************************************/
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/* Information sur le démarrage */
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int info()
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{
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getbootinfo();
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return 0;
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}
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/*******************************************************************************/
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/* Affiche les registres */
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int regs()
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{
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save_stack dump;
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dump_cpu(&dump);
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show_cpu(&dump);
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return 0;
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}
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/*******************************************************************************/
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/* Change le mode */
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int mode()
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{
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setvmode(0x84);
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return 0;
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}
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/*******************************************************************************/
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/* Efface l'écran */
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int clear()
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{
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fill(0x00);
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gotoscr(0, 0);
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return 0;
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}
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/*******************************************************************************/
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/* Redemarre */
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int rebootnow()
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{
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print("<Appuyer sur une touche pour redemarrer>");
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waitascii();
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reboot();
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return 0;
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}
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/*******************************************************************************/
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/* Test les fonctionnalité 2D graphiques */
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int test2d()
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{
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setvmode(0x89);
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fill(0x00);
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struct vertex2d a, b, c;
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randomize();
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for (int i = 0; i < 3200; i++) {
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a.x = random(0, 800);
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a.y = random(0, 600);
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b.x = random(0, 800);
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b.y = random(0, 600);
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c.x = random(0, 800);
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c.y = random(0, 600);
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trianglefilled(&a, &b, &c, random(0, 16));
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triangle(&a, &b, &c, 2);
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}
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return 0;
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}
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/*******************************************************************************/
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/* Lit l'IDT et l'affiche */
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int readidt()
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{
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u32 index, i = 0;
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idtdes *desc;
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struct idtr idtreg;
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sidt(&idtreg);
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printf("Information sur l'IDT\r\nAdresse:%X Limite:%hX\r\n", idtreg.base,
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(u32) idtreg.limite);
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desc = idtreg.base;
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for (index = 0; index < idtreg.limite / sizeof(idtdes); index++) {
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u32 select = desc[index].select;
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u32 offset =
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desc[index].offset0_15 + (desc[index].offset16_31 << 16);
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u32 type = desc[index].type & 0x0F00;
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u8 *type2;
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if (i>=32 & i<=39)
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type2="IRQ master";
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else if (i>=96 & i<=103)
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type2="IRQ slave ";
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else if (i<19)
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type2="EXCEPTION ";
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else
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type2="INTERRUPT ";
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printf("\r\%s % hu %hY:%Y - ", type2,i++, select, offset, type);
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if (type == INTGATE)
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print("INTGATE");
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else if (type == TRAPGATE)
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print("TRAPGATE");
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else if (type == TASKGATE)
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print("TASKGATE");
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else if (type == CALLGATE)
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print("CALLGATE");
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else if (type == LDTDES)
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print("LDTDES");
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else
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print("inconnu");
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if (i % 32 == 0) {
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print("\r\n<Appuyez sur une touche>\r\n");
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waitascii();
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}
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}
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return 0;
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}
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/*******************************************************************************/
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/* Lit les descripteurs GDT et les affiche */
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int readgdt()
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{
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u32 index;
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struct gdtr gdtreg;
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sgdt(&gdtreg);
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printf("Information sur la GDT\r\nAdresse:%X Limite:%hX\r\n", gdtreg.base, gdtreg.limite);
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for (index = 0; index < gdtreg.limite ; index+=sizeof(gdtdes)) {
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if (!isdesvalid(index))
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printf("\033[31m");
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printf("SEL =%hY %Y %Y DPL=%d %cS%d [%c%c%c] %h ub\033[0m\r\n",index,getdesbase(index),getdeslimit(index),getdesdpl(index),getdestype(index),getdessize(index),getdesbit3(index),getdesbit2(index),getdesbit1(index),getdesalign(index));
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}
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return 0;
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}
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/*******************************************************************************/
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/* Detecte et affiche les information sur le CPU */
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int detectcpu()
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{
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cpuinfo cpu;
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u8 noproc[] = "\033[31mInconnu\033[0m\000";
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strcpy(&noproc, &cpu.detectedname);
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getcpuinfos(&cpu);
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printf
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("\r\nDetection du processeur\r\033[1m Revision \t:%d\r Modele \t:%d\r Famille \t:%d\r Nom cpuid\t:%s\rJeux d'instruction\t:%s\033[0m\r\n\000",
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cpu.stepping, cpu.models, cpu.family, &cpu.detectedname,
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&cpu.techs);
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return 0;
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}
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/*******************************************************************************/
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