diff options
Diffstat (limited to 'src/bringelle.c')
| -rw-r--r-- | src/bringelle.c | 45 |
1 files changed, 15 insertions, 30 deletions
diff --git a/src/bringelle.c b/src/bringelle.c index 520b83d..cb8c5e4 100644 --- a/src/bringelle.c +++ b/src/bringelle.c @@ -8,7 +8,13 @@ extern void interrupt_enable(); void utask(){ - char msg[]="Message from the task :D"; + char *msg=(char*)4206592+10; + msg[0]='T'; + msg[1]='a'; + msg[2]='s'; + msg[3]='k'; + msg[4]='1'; + msg[5]='\0'; asm("mov $0x1, %%eax;int $0x30"::"b"(msg)); while(1); } @@ -22,37 +28,16 @@ void bringelle(){ print("Interrupts enabled\n"); paging_enable(); - print("Paging enable!\n"); - print("Kernel started !"); - - paging_allocate(5); - print("\n"); - paging_dump(1024,-1); - print("\n"); - + print("Paging enable\n"); + print("Kernel started!\n"); + print("-----------------------\n"); show_tics=1; + // Utask - print("Launch user task "); - memcpy((void*)utask,(void*)0x300000, 100); // 100 bytes seems reasonable to load utask - asm ( - "cli \n\t" // Ensure we do not get interrupted - "movl %%ss, %%eax \n\t" - "movl %%eax, %0 \n\t" // Save kernel ss segment into the TSS - "movl %%esp, %1 \n\t" // Save kernel esp into the TSS BEFORE setting up the stack - "pushl $0x33 \n\t" // Push task ss which is 0x30 along with prlv which is 0x3 - "pushl $0x30FFFF \n\t" // Push task esp - "pushfl \n\t" // Retrieve flags - "popl %%eax \n\t" - "orl $0x200, %%eax \n\t" // Enable interrupt for the user task - "and $0xffffbfff, %%eax \n\t" // Clear the NT flags - "push %%eax \n\t" // Push task flags - "push $0x23 \n\t" // Push task cs which is 0x20 along with prlv which is 0x3 - "push $0x300000 \n\t" // Push task entry point - "mov $0x2B, %%eax \n\t" // GDT entry 0x28 along with prlv which is 0x3 - "mov %%eax, %%ds \n\t" // Setting up user data segment - "iret \n\t" // Launch user task - : "=m" (TSS.ss0), "=m" (TSS.esp0) - ); + print("Launch user task \n"); + int* page_dir=paging_allocate(2); + run_task(page_dir, utask,100); + while(1); } |