feat: creation d'une commande multiboot et ajout gestion arithematique sur 64 bits, amelioration de printf
This commit is contained in:
parent
cd9129dc15
commit
4a4886886e
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@ -6,3 +6,5 @@ u32 rand();
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void randomize();
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u8 log2(u32 n);
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u8 log10(u32 n);
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unsigned long long __udivdi3 (unsigned long long num, unsigned long long den);
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unsigned long long __umoddi3 (unsigned long long n, unsigned long long d);
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@ -383,3 +383,6 @@
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u32 load_base_addr;
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};
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void getbootinfo(void);
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void initmultiboot(const u32 addr);
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@ -13,3 +13,4 @@ int detectcpu();
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int mode();
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int clear();
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int dump_regs();
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int info();
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@ -25,7 +25,7 @@ typedef unsigned long long UQWORD;
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typedef unsigned char u8;
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typedef unsigned short u16;
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typedef unsigned int u32;
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typedef unsigned long int u64;
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typedef unsigned long long int u64;
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typedef char s8;
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typedef short s16;
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typedef int s32;
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@ -16,6 +16,6 @@ void putchar(u8 thechar);
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u32 print(u8* string);
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u32 printf (const u8 *string, ...);
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void changevc(u8 vc);
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u8* itoa(u32 num, u8* str, u8 base, u32 dim, u8 achar);
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u8* itoa(u64 num, u8* str, u8 base, u64 dim, u8 achar);
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u8* sitoa(int num, u8* str, u32 dim);
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102
lib/math.c
102
lib/math.c
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@ -1,83 +1,179 @@
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#include "types.h"
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#include "timer.h"
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unsigned long long __udivdi3 (unsigned long long num, unsigned long long den)
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{
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unsigned long long quot, qbit;
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quot = 0;
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qbit = 1;
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if (den == 0)
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{
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return 0;
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}
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while ((long long) den >= 0)
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{
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den <<= 1;
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qbit <<= 1;
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}
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while (qbit)
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{
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if (den <= num)
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{
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num -= den;
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quot += qbit;
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}
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den >>= 1;
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qbit >>= 1;
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}
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return quot;
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}
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unsigned long long __umoddi3 (unsigned long long n, unsigned long long d)
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{
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return n - d * __udivdi3 (n, d);
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}
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/******************************************************************************/
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/* Fonction qui retourne le logarithme 2 */
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u8 log2(u32 n)
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u8 log2(u64 n)
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{
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if (n == 0)
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return 0;
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int logValue = -1;
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while (n) {
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logValue++;
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n >>= 1;
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}
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return logValue + 1;
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}
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/******************************************************************************/
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/* Fonction qui retourne le logarithme 10 */
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u8 log10(u32 n)
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u8 log10(u64 n)
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{
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return (n >= 1000000000u) ? 9 : (n >= 100000000u) ? 8 :
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return (n >= 10000000000000000000u) ? 19 : (n >= 100000000000000000u) ? 18 :
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(n >= 100000000000000000u) ? 17 : (n >= 10000000000000000u) ? 16 :
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(n >= 1000000000000000u) ? 15 : (n >= 100000000000000u) ? 14 :
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(n >= 10000000000000u) ? 13 : (n >= 1000000000000u) ? 12 :
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(n >= 100000000000u) ? 11 : (n >= 10000000000u) ? 10 :
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(n >= 1000000000u) ? 9 : (n >= 100000000u) ? 8 :
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(n >= 10000000u) ? 7 : (n >= 1000000u) ? 6 :
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(n >= 100000u) ? 5 : (n >= 10000u) ? 4 :
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(n >= 1000u) ? 3 : (n >= 100u) ? 2 : (n >= 10u) ? 1u : 0u;
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}
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/******************************************************************************/
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/* Fonction qui retourne la valeur absolue */
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u32 abs(int x)
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{
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if (x < 0)
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x = -x;
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return (u32) x;
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}
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/******************************************************************************/
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/* Fonction qui initialise le générateur de nombre aléatoire */
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static u32 seed = 0x12341234;
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void randomize()
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{
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seed = gettimer();
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}
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/******************************************************************************/
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/* Fonction qui renvoie un nombre aléatoire */
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u32 rand()
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{
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u32 next = seed;
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int result;
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next *= 1103515245;
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next += 12345;
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result = (unsigned int)(next / 65536) % 2048;
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next *= 1103515245;
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next += 12345;
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result <<= 10;
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result ^= (unsigned int)(next / 65536) % 1024;
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next *= 1103515245;
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next += 12345;
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result <<= 10;
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result ^= (unsigned int)(next / 65536) % 1024;
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seed = next;
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return result;
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}
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/******************************************************************************/
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/* Fonction qui renvoie un nombre aléatoire borné */
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u32 random(u32 lower, u32 upper)
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{
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return (rand() % (upper - lower + 1)) + lower;
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}
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@ -0,0 +1,153 @@
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#include "multiboot2.h"
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static u32 infobloc;
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void initmultiboot(const u32 addr)
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{
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infobloc=addr;
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}
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void getbootinfo(void)
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{
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u32 addr=infobloc;
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struct multiboot_tag *tag;
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unsigned size = *(unsigned *) addr;
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if (addr & 7) print("Non aligne...");
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printf(" Taille :%X\r\n", (u32)size);
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for (tag = (struct multiboot_tag *) (addr + 8);
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tag->type != MULTIBOOT_TAG_TYPE_END;
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tag = (struct multiboot_tag *) ((u8 *) tag + ((tag->size + 7) & ~7)))
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{
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printf ("Tag 0x%x, Taille 0x%x\r\n", tag->type, tag->size);
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switch (tag->type)
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{
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case MULTIBOOT_TAG_TYPE_CMDLINE:
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printf ("line de lancement : %s\r\n",
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((struct multiboot_tag_string *) tag)->string);
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break;
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case MULTIBOOT_TAG_TYPE_BOOT_LOADER_NAME:
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printf ("Chargeur de boot : %s\r\n",
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((struct multiboot_tag_string *) tag)->string);
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break;
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case MULTIBOOT_TAG_TYPE_MODULE:
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printf ("Module %x-%x. Command line %s\r\n",
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((struct multiboot_tag_module *) tag)->mod_start,
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((struct multiboot_tag_module *) tag)->mod_end,
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((struct multiboot_tag_module *) tag)->cmdline);
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break;
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case MULTIBOOT_TAG_TYPE_BASIC_MEMINFO:
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printf ("Memoire basse : %uKB, memoire haute = %uKB\r\n",
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((struct multiboot_tag_basic_meminfo *) tag)->mem_lower,
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((struct multiboot_tag_basic_meminfo *) tag)->mem_upper);
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break;
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case MULTIBOOT_TAG_TYPE_BOOTDEV:
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printf ("Peripherique de demarrage : %x,%u,%u\r\n\r\n",
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((struct multiboot_tag_bootdev *) tag)->biosdev,
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((struct multiboot_tag_bootdev *) tag)->slice,
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((struct multiboot_tag_bootdev *) tag)->part);
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break;
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case MULTIBOOT_TAG_TYPE_MMAP:
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{
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multiboot_memory_map_t *mmap;
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printf ("*** Plan de memoire ***\r\n");
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for (mmap = ((struct multiboot_tag_mmap *) tag)->entries;(u8 *) mmap < (u8 *) tag + tag->size; mmap = (multiboot_memory_map_t *)
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((unsigned long) mmap + ((struct multiboot_tag_mmap *) tag)->entry_size))
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printf (" adresse: %lx,"" taille:%lx, type:%x\r\n",
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(u64) (mmap->addr),
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(u64) (mmap->len),
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(u32) (mmap->type));
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}
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break;
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case MULTIBOOT_TAG_TYPE_FRAMEBUFFER:
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{
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u32 color;
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unsigned i;
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struct multiboot_tag_framebuffer *tagfb
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= (struct multiboot_tag_framebuffer *) tag;
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void *fb = (void *) (unsigned long) tagfb->common.framebuffer_addr;
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switch (tagfb->common.framebuffer_type)
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{
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case MULTIBOOT_FRAMEBUFFER_TYPE_INDEXED:
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{
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unsigned best_distance, distance;
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struct multiboot_color *palette;
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palette = tagfb->framebuffer_palette;
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color = 0;
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best_distance = 4*256*256;
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for (i = 0; i < tagfb->framebuffer_palette_num_colors; i++)
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{
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distance = (0xff - palette[i].blue)
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* (0xff - palette[i].blue)
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+ palette[i].red * palette[i].red
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+ palette[i].green * palette[i].green;
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if (distance < best_distance)
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{
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color = i;
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best_distance = distance;
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}
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}
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}
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break;
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case MULTIBOOT_FRAMEBUFFER_TYPE_RGB:
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color = ((1 << tagfb->framebuffer_blue_mask_size) - 1)
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<< tagfb->framebuffer_blue_field_position;
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break;
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case MULTIBOOT_FRAMEBUFFER_TYPE_EGA_TEXT:
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color = '\\' | 0x0100;
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break;
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default:
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color = 0xffffffff;
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break;
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}
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for (i = 0; i < tagfb->common.framebuffer_width
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&& i < tagfb->common.framebuffer_height; i++)
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{
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switch (tagfb->common.framebuffer_bpp)
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{
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case 8:
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{
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u8 *pixel = fb
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+ tagfb->common.framebuffer_pitch * i + i;
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*pixel = color;
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}
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break;
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case 15:
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case 16:
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{
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u16 *pixel
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= fb + tagfb->common.framebuffer_pitch * i + 2 * i;
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*pixel = color;
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}
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break;
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case 24:
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{
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u32 *pixel
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= fb + tagfb->common.framebuffer_pitch * i + 3 * i;
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*pixel = (color & 0xffffff) | (*pixel & 0xff000000);
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}
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break;
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case 32:
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{
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u32 *pixel
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= fb + tagfb->common.framebuffer_pitch * i + 4 * i;
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*pixel = color;
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}
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break;
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}
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}
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break;
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}
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}
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}
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}
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12
lib/shell.c
12
lib/shell.c
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@ -7,6 +7,7 @@
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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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@ -17,6 +18,7 @@ static command commands[] = {
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{"REGS", "", &dump_regs},
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{"GDT", "", &readgdt},
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{"IDT", "", &readidt},
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{"INFO", "", &info}
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};
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/*******************************************************************************/
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@ -53,6 +55,16 @@ void shell()
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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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70
lib/video.c
70
lib/video.c
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@ -309,10 +309,10 @@ u32 print(u8 * string)
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u32 printf(const u8 * string, ...)
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{
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va_list args;
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u32 sizes[] = { 0xFF, 0xFFFF, 0xFFFFFFFF };
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u8 strbase2[] = "b\000";
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u8 strbase8[] = "o\000";
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u8 strbase16[] = "h\000";
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u64 sizes[] = { 0xFF, 0xFFFF, 0xFFFFFFFF, 0xFFFFFFFFFFFFFFFF };
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u8 strbase2[] = "0xb\000";
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u8 strbase8[] = "0xo\000";
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u8 strbase16[] = "0x\000";
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u8 hexadecimal[] = "*0x\000";
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u8 achar, temp;
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u8 asize, charadd;
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@ -320,7 +320,7 @@ u32 printf(const u8 * string, ...)
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u8 *str = string;
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u8 *strtemp;
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u32 i = 0, counter = 0;
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u32 num;
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u64 num;
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bool flag = false;
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va_start(args, string);
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@ -345,14 +345,23 @@ u32 printf(const u8 * string, ...)
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break;
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case 'h':
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asize--;
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if (asize<0) asize=0;
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flag = true;
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break;
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case 'l':
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asize++;
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if (asize>3) asize=3;
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flag = true;
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break;
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case 'u':
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num = (u32) va_arg(args, int);
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if (asize==0)
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num = (u64) va_arg(args, u8);
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else if (asize==1)
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num = (u64) va_arg(args, u16);
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else if (asize==2)
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num = (u64) va_arg(args, u32);
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else
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num = (u64) va_arg(args, u64);
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if (charadd == 0xFF)
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charadd = '0';
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itoa(num, &buffer, 10, sizes[asize], charadd);
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@ -360,12 +369,19 @@ u32 printf(const u8 * string, ...)
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flag = false;
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break;
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case 'o':
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num = (u32) va_arg(args, int);
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if (asize==0)
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num = (u64) va_arg(args, u8);
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else if (asize==1)
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num = (u64) va_arg(args, u16);
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else if (asize==2)
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num = (u64) va_arg(args, u32);
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else
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num = (u64) va_arg(args, u64);
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if (charadd == 0xFF)
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charadd = '0';
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itoa(num, &buffer, 8, sizes[asize], charadd);
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counter += print(&buffer) + 1;
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print(&strbase8);
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counter += print(&buffer) + 1;
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flag = false;
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break;
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case 'c':
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@ -376,7 +392,14 @@ u32 printf(const u8 * string, ...)
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break;
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case 'd':
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case 'i':
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num = (int)va_arg(args, int);
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if (asize==0)
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num = (u64) va_arg(args, u8);
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else if (asize==1)
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num = (u64) va_arg(args, u16);
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else if (asize==2)
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num = (u64) va_arg(args, u32);
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else
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num = (u64) va_arg(args, u64);
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if (charadd == 0xFF)
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charadd = ' ';
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sitoa(num, &buffer, sizes[asize]);
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@ -399,23 +422,37 @@ u32 printf(const u8 * string, ...)
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break;
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case 'x':
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case 'X':
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num = (u32) va_arg(args, int);
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if (asize==0)
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num = (u64) va_arg(args, u8);
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else if (asize==1)
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num = (u64) va_arg(args, u16);
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else if (asize==2)
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num = (u64) va_arg(args, u32);
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else
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num = (u64) va_arg(args, u64);
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if (charadd == 0xFF)
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charadd = '0';
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itoa(num, &buffer, 16, sizes[asize], charadd);
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if (achar == 'X')
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strtoupper(&buffer);
|
||||
counter += print(&buffer) + 1;
|
||||
print(&strbase16);
|
||||
counter += print(&buffer) + 1;
|
||||
flag = false;
|
||||
break;
|
||||
case 'b':
|
||||
num = (u32) va_arg(args, int);
|
||||
if (asize==0)
|
||||
num = (u64) va_arg(args, u8);
|
||||
else if (asize==1)
|
||||
num = (u64) va_arg(args, u16);
|
||||
else if (asize==2)
|
||||
num = (u64) va_arg(args, u32);
|
||||
else
|
||||
num = (u64) va_arg(args, u64);
|
||||
if (charadd == 0xFF)
|
||||
charadd = '0';
|
||||
itoa(num, &buffer, 2, sizes[asize], charadd);
|
||||
counter += print(&buffer) + 1;
|
||||
print(&strbase2);
|
||||
counter += print(&buffer) + 1;
|
||||
flag = false;
|
||||
break;
|
||||
default:
|
||||
|
|
@ -431,11 +468,10 @@ u32 printf(const u8 * string, ...)
|
|||
|
||||
/* converti un entier non signé en chaine de caractère */
|
||||
|
||||
u8 *itoa(u32 orignum, u8 * str, u8 base, u32 dim, u8 achar)
|
||||
u8 *itoa(u64 orignum, u8 * str, u8 base, u64 dim, u8 achar)
|
||||
{
|
||||
u32 sizes[] = { 0xFF, 0xFFFF, 0xFFFFFFFF };
|
||||
u8 *pointer = str, i, size = 0;
|
||||
u32 num = orignum;
|
||||
u64 num = orignum;
|
||||
num &= dim;
|
||||
if (num == 0 && (achar == 0)) {
|
||||
*(pointer++) = '0';
|
||||
|
|
@ -457,7 +493,7 @@ u8 *itoa(u32 orignum, u8 * str, u8 base, u32 dim, u8 achar)
|
|||
break;
|
||||
}
|
||||
for (i = 0; i < size; i++) {
|
||||
u32 result = num % (u32) base;
|
||||
u64 result = num % (u32) base;
|
||||
*(pointer++) =
|
||||
(result > 9) ? (result - 10) + 'a' : result + '0';
|
||||
num = num / (u32) base;
|
||||
|
|
|
|||
4
makefile
4
makefile
|
|
@ -50,6 +50,8 @@ retest64: littleclean test64
|
|||
|
||||
floppytest: bits32 floppy qemu-floppy
|
||||
|
||||
refloppytest: littleclean floppytest
|
||||
|
||||
view:
|
||||
(hexdump -C ./final/harddisk.img.final|head -c10000)
|
||||
|
||||
|
|
@ -76,7 +78,7 @@ qemu-debug64:
|
|||
(killall qemu-system-x86_64;qemu-system-x86_64 -m 1G -drive format=raw,file=./final/harddiskuefi.img.final --bios /usr/share/qemu/OVMF.fd -s -S &)
|
||||
|
||||
qemu:
|
||||
(killall qemu-system-i386;qemu-system-i386 -m 1G -drive format=raw,file=./final/harddisk.img.final --enable-kvm -cpu host -s &)
|
||||
(killall qemu-system-i386;qemu-system-i386 -m 5G -drive format=raw,file=./final/harddisk.img.final --enable-kvm -cpu host -s &)
|
||||
|
||||
qemu64:
|
||||
(killall qemu-system-x86_64;qemu-system-x86_64 -m 1G -drive format=raw,file=./final/harddiskuefi.img.final --bios /usr/share/qemu/OVMF.fd --enable-kvm -cpu host -s &)
|
||||
|
|
|
|||
|
|
@ -15,11 +15,11 @@
|
|||
#include "multiboot2.h"
|
||||
|
||||
static u8 warnmsg[] =
|
||||
"\033[99C\033[8D\033[37m\033[1m[ \033[36mNON\033[37m ]\033[0m\000";
|
||||
"\033[99C\033[8D\033[37m\033[1m[ \033[36mNON\033[37m ]\033[0m";
|
||||
static u8 okmsg[] =
|
||||
"\033[99C\033[8D\033[37m\033[1m[ \033[32mOK\033[37m ]\033[0m\000";
|
||||
"\033[99C\033[8D\033[37m\033[1m[ \033[32mOK\033[37m ]\033[0m";
|
||||
static u8 errormsg[] =
|
||||
"\033[99C\033[8D\033[37m\033[1m[\033[31mERREUR\033[37m]\033[0m\000";
|
||||
"\033[99C\033[8D\033[37m\033[1m[\033[31mERREUR\033[37m]\033[0m";
|
||||
static u8 key = 0;
|
||||
|
||||
void ok()
|
||||
|
|
@ -40,7 +40,7 @@ void error()
|
|||
return;
|
||||
}
|
||||
|
||||
int main(unsigned long magic, unsigned long addr)
|
||||
int main(u32 magic, u32 addr)
|
||||
{
|
||||
cli();
|
||||
setvmode(0x02);
|
||||
|
|
@ -49,42 +49,45 @@ int main(unsigned long magic, unsigned long addr)
|
|||
print("\033[2J\000");
|
||||
printf(ansilogo);
|
||||
|
||||
print("\033[37m\033[0m -Chargement noyaux\000");
|
||||
print("\033[37m\033[0m -Chargement noyaux");
|
||||
ok();
|
||||
|
||||
printf("\033[37m\033[0m -Nombre magique multiboot2 : %X\000",
|
||||
printf("\033[37m\033[0m -Nombre magique multiboot2 : %X",
|
||||
(u32) magic);
|
||||
if (magic == MULTIBOOT2_BOOTLOADER_MAGIC)
|
||||
{
|
||||
initmultiboot(addr);
|
||||
ok();
|
||||
}
|
||||
else
|
||||
error();
|
||||
|
||||
print("\033[37m\033[0m -Initilisation de la memoire (GDT)\000");
|
||||
print("\033[37m\033[0m -Initilisation de la memoire (GDT)");
|
||||
initgdt(&&next);
|
||||
next:
|
||||
ok();
|
||||
|
||||
print("\033[37m\033[0m -Initilisation des taches (TSR)\000");
|
||||
print("\033[37m\033[0m -Initilisation des taches (TSR)");
|
||||
inittr();
|
||||
ok();
|
||||
|
||||
print("\033[37m\033[0m -Initilisation des interruptions (IDT/PIC)\000");
|
||||
print("\033[37m\033[0m -Initilisation des interruptions (IDT/PIC)");
|
||||
initidt();
|
||||
initpic();
|
||||
sti();
|
||||
ok();
|
||||
|
||||
print(" -Installation du handler timer (IRQ 0)\000");
|
||||
print(" -Installation du handler timer (IRQ 0)");
|
||||
setidt((u32) timer, SEL_KERNEL_CODE, INTGATE, 32);
|
||||
enableirq(0);
|
||||
ok();
|
||||
|
||||
print(" -Installation du handler clavier (IRQ 1)\000");
|
||||
print(" -Installation du handler clavier (IRQ 1)");
|
||||
setidt((u32) keyboard, SEL_KERNEL_CODE, INTGATE, 33);
|
||||
enableirq(1);
|
||||
ok();
|
||||
|
||||
print(" -Installation du handler souris (IRQ12+Cascade IRQ2)\000");
|
||||
print(" -Installation du handler souris (IRQ12+Cascade IRQ2)");
|
||||
setidt((u32) mouse, SEL_KERNEL_CODE, INTGATE, 100);
|
||||
enableirq(2);
|
||||
enableirq(12);
|
||||
|
|
@ -93,7 +96,7 @@ int main(unsigned long magic, unsigned long addr)
|
|||
else
|
||||
ok();
|
||||
|
||||
print(" -Installation des appels systemes utilisateur\000");
|
||||
print(" -Installation des appels systemes utilisateur");
|
||||
initsyscall();
|
||||
ok();
|
||||
|
||||
|
|
|
|||
Loading…
Reference in New Issue