feat: compilation du noyau en code non relocalisable, commande task_create quasi terminée. Allocation dynamique de page pour les programmes utilisateurs dans exception14 (PGFAULT)

2018-12-10 17:03:52 +01:00 · 2018-12-10 17:03:52 +01:00 · a31cf264c3
parent f0f36a0f5c
commit a31cf264c3
8 changed files with 308 additions and 54 deletions
--- a/include/process.h
+++ b/include/process.h
@ -143,3 +143,7 @@ void task_init();
 u32 task_getfreePID ();
 u32 task_usePID (u32 pid);
 u32 task_create();
+u32 elf_test(u8 *src);
+u32 elf_load(u8 *src, u32 pid);
+process *getcurrentprocess();
+void task_run(u32 pid);
--- a/lib/interrupts.c
+++ b/lib/interrupts.c
@ -9,6 +9,7 @@
 #include "gdt.h"
 #include "system.h"
 #include "debug.h"
+#include "process.h"

 #define IDT_SIZE		256	/* nombre de descripteurs */

@ -401,6 +402,16 @@ void exception13()
 	cpuerror("#GP General protection fault (GPF)",dump);
 }

+static u8 ex14_errors1[]="Supervisory process tried to read a non-present page entry";
+static u8 ex14_errors2[]="Supervisory process tried to read a page and caused a protection fault";
+static u8 ex14_errors3[]="Supervisory process tried to write to a non-present page entry";
+static u8 ex14_errors4[]="Supervisory process tried to write a page and caused a protection fault";
+static u8 ex14_errors5[]="User process tried to read a non-present page entry";
+static u8 ex14_errors6[]="User process tried to read a page and caused a protection fault";
+static u8 ex14_errors7[]="User process tried to write to a non-present page entry";
+static u8 ex14_errors8[]="User process tried to write a page and caused a protection fault";
+static u8 *ex14_errors[]={&ex14_errors1,&ex14_errors2,&ex14_errors3,&ex14_errors4,&ex14_errors5,&ex14_errors6,&ex14_errors7,&ex14_errors8};
+
 void exception14()
 {
    regs *dump;
@ -413,37 +424,20 @@ void exception14()
    dump->esp=*oldesp;
    dump->ebp=*((u32 *) dump->esp);
    dump->eip=current->eip;
-    u8* errorstring;
-    u8 completeerrorstring[255];
-    switch (current->error_code & 0xF) {
-        case 0:
-            errorstring="Supervisory process tried to read a non-present page entry";
-            break;
-        case 1:
-            errorstring="Supervisory process tried to read a page and caused a protection fault";
-            break;
-        case 2:
-            errorstring="Supervisory process tried to write to a non-present page entry";
-            break;
-        case 3:
-            errorstring="Supervisory process tried to write a page and caused a protection fault";
-            break;
-        case 4:
-            errorstring="User process tried to read a non-present page entry";
-            break;
-        case 5:
-            errorstring="User process tried to read a page and caused a protection fault";
-            break;
-        case 6:
-            errorstring="User process tried to write to a non-present page entry";
-            break;      
-        case 7:
-            errorstring="User process tried to write a page and caused a protection fault";
-            break;   
-    }
-   // printf("%X",current->error_code);
-    sprintf(&completeerrorstring,"#PF Page fault - %s at adress %X",errorstring,dump->cr2);
-	cpuerror(&completeerrorstring,dump);
+    if (dump->cr2 >= USER_CODE && dump->cr2 < USER_STACK) 
+    {
+        virtual_range_new(getcurrentprocess()->pdd, (u8 *) (dump->cr2 & 0xFFFFF000), PAGESIZE, PAGE_ALL);
+	} 
+	else {		
+        printf("Page fault - %s at adress %Y cs:eip - %Y:%Y\r\n",ex14_errors[current->error_code & 0xF],dump->cr2,dump->cs,dump->eip);
+        cpuerror("#SS Page fault",dump);
+	}
+    dump->ebp=oldesp;
+    restdebugcpu();
+    leave();
+    sti();
+    asm("addl $0x04,%%esp"::);
+    iret();	
 }

 void exception15()
--- a/lib/makefile
+++ b/lib/makefile
@ -1,4 +1,4 @@
-CC=gcc -O0 -g -nostdinc -ffreestanding -fno-builtin -Wall -w -m32 -F elf_i386 -I ../include
+CC=gcc -O0 -g -nostdinc -ffreestanding -fno-builtin -Wall -w -m32 -F elf_i386 -fno-pie -no-pie -I ../include
 LINK=ld -m elf_i386 -r -o
 SRCS= $(wildcard *.c)
 OBJS= $(SRCS:.c=.o)
--- a/lib/process.c
+++ b/lib/process.c
@ -12,13 +12,13 @@ process *current;
 u32 lastpid;


-u8 elf_errors1[]="Aucune signature ELF";
-u8 elf_errors2[]="Fichier au format ELF mais non 32 bits";
-u8 elf_errors3[]="ELF non LSB";
-u8 elf_errors4[]="ELF mauvaise version";
-u8 elf_errors5[]="ELF pour OS ne correspondant pas";
-u8 elf_errors6[]="Mauvais type de machine";
-u8 *elf_errors[6]={&elf_errors1,&elf_errors2,&elf_errors3,&elf_errors4,&elf_errors5,&elf_errors6};
+static u8 elf_errors1[]="Aucune signature ELF";
+static u8 elf_errors2[]="Fichier au format ELF mais non 32 bits";
+static u8 elf_errors3[]="ELF non LSB";
+static u8 elf_errors4[]="ELF mauvaise version";
+static u8 elf_errors5[]="ELF pour OS ne correspondant pas";
+static u8 elf_errors6[]="Mauvais type de machine";
+static u8 *elf_errors[]={&elf_errors1,&elf_errors2,&elf_errors3,&elf_errors4,&elf_errors5,&elf_errors6};

 /*******************************************************************************/
 /* Vérifie la signature ELF 
@ -44,7 +44,7 @@ u32 elf_test(u8 *src)
            return 4;
        if (header->e_ident[EI_OSABI]!=ELFOSABI_COS2000)
            return 5;
-        if (header->e_machine==EM_386)
+        if (header->e_machine!=EM_386)
            return 6;
        return 0;
        }
@ -68,7 +68,7 @@ u32 elf_load(u8 *src, u32 pid)
 	program = (elf32p *) (src + header->e_phoff);
    code=elf_test(src);	
    if (code!=0) {
-		printf("Mauvais format ELF : N°%s !\r\n",elf_errors[code-1]);
+		printf("Erreur de chargement ELF, %s !\r\n",elf_errors[code-1]);
 		return NULL;
 	}
 	for (i = 0; i < header->e_phnum; i++, program++) {
@ -91,12 +91,13 @@ u32 elf_load(u8 *src, u32 pid)
 				processes[pid].bss_low = (u8*) v_begin;
 				processes[pid].bss_high = (u8*) v_end;
 			}
-			memcpy((u8 *) v_begin, (u8 *) (src + program->p_offset), program->p_filesz,0);
+			memcpy((u8 *) (src + program->p_offset),(u8 *) v_begin , program->p_filesz,0);
 			if (program->p_memsz > program->p_filesz)
 				for (i = program->p_filesz, ptr = (u8 *) program->p_vaddr; i < program->p_memsz; i++)
 					ptr[i] = 0;
 		}
 	}
+    processes[pid].entry=header->e_entry;
 	return header->e_entry;
 }

@ -133,6 +134,13 @@ u32 task_getfreePID ()
 	return i;
 }

+/*******************************************************************************/
+/* Récupère les informations sur le processus courant */
+process *getcurrentprocess()
+{
+    return current;
+}
+
 /*******************************************************************************/
 /* Determine le dernier PID occupé */

@ -141,11 +149,19 @@ u32 task_usePID (u32 pid)
 	lastpid=pid;
 }

+/*******************************************************************************/
+/* Execute une tâche */
+
+void task_run(u32 pid)
+{  
+	processes[pid].status = STATUS_RUN;
+}
+
 /*******************************************************************************/
 /* Initialise une tâche */

 u32 task_create(u8 *code)
-{
+{    
    process *previous=current; 
    u32 pid=task_getfreePID();
    task_usePID(pid);
@ -156,15 +172,17 @@ u32 task_create(u8 *code)
 	current = &processes[pid];
 	setcr3(processes[pid].pdd->addr->paddr);
 	kstack = virtual_page_getfree();
-	processes[pid].dump.ss = SEL_USER_STACK || RPL_RING3;
+	processes[pid].dump.ss = SEL_USER_STACK | RPL_RING3;
 	processes[pid].dump.esp = USER_STACK;
 	processes[pid].dump.eflags = 0x0;
-	processes[pid].dump.cs = SEL_USER_CODE  || RPL_RING3;
+	processes[pid].dump.cs = SEL_USER_CODE  | RPL_RING3;
 	processes[pid].dump.eip = elf_load(code,pid);
-	processes[pid].dump.ds = SEL_USER_DATA || RPL_RING3;
-	processes[pid].dump.es = SEL_USER_DATA || RPL_RING3;
-	processes[pid].dump.fs = SEL_USER_DATA || RPL_RING3;
-	processes[pid].dump.gs = SEL_USER_DATA || RPL_RING3;
+    if (processes[pid].dump.eip==NULL)
+        return NULL;
+	processes[pid].dump.ds = SEL_USER_DATA | RPL_RING3;
+	processes[pid].dump.es = SEL_USER_DATA | RPL_RING3;
+	processes[pid].dump.fs = SEL_USER_DATA | RPL_RING3;
+	processes[pid].dump.gs = SEL_USER_DATA | RPL_RING3;
 	processes[pid].dump.cr3 = (u32) processes[pid].pdd->addr->paddr;
 	processes[pid].kstack.ss0 = SEL_KERNEL_STACK;
 	processes[pid].kstack.esp0 = (u32) kstack->vaddr + PAGESIZE - 16;
@ -178,6 +196,14 @@ u32 task_create(u8 *code)
 	processes[pid].result = 0;
 	processes[pid].status = STATUS_READY;
 	current = previous;
-	setcr3(current->dump.cr3);
-	return pid;
+    if (current==NULL)
+    {
+        u32 pd = KERNEL_PD_ADDR;
+	    setcr3(pd);
+    }    
+    else
+    {    
+	    setcr3(current->dump.cr3);
+    }	
+    return pid;
 }
--- a/lib/shell.c
+++ b/lib/shell.c
@ -41,7 +41,7 @@ static command commands[] = {
 	{"font"      , "", &sfont},
 	{"test3d"      , "", &test3d},
 	{"detectpci"      , "", &detectpci},
-	{"wmem"      , "", &showmem},
+	{"mem"      , "", &showmem},
 	{"testmem"      , "", &testmem},
    {"testcall"      , "", &testcall},
    {"testtask"      , "", &testtask},
@ -87,9 +87,14 @@ int test(void)
 /*******************************************************************************/
 /* Test l'usage de création de tâche */

+#include "test.c"
+
 int testtask()
 {
+    task_init();
    print("*** Creation d'une tache");
+    u32 pid=task_create(&programs_test);
+    task_run(pid);
 }

 /*******************************************************************************/
--- a/lib/test.c
+++ b/lib/test.c
@ -0,0 +1,225 @@
+/*
+Programme de test compilé en mode USER avec SYSCALL, le binaire est intégré au noyau pour test en attendant d'avoir un pilot de disque */
+
+#include "types.h"
+
+static u8 programs_test[] = {
+  0x7f, 0x45, 0x4c, 0x46, 0x01, 0x01, 0x01, 0x10, 0x00, 0x00, 0x00, 0x00,
+  0x00, 0x00, 0x00, 0x00, 0x02, 0x00, 0x03, 0x00, 0x01, 0x00, 0x00, 0x00,
+  0x00, 0x00, 0x00, 0x40, 0x34, 0x00, 0x00, 0x00, 0x08, 0x08, 0x00, 0x00,
+  0x00, 0x00, 0x00, 0x00, 0x34, 0x00, 0x20, 0x00, 0x02, 0x00, 0x28, 0x00,
+  0x0e, 0x00, 0x0d, 0x00, 0x01, 0x00, 0x00, 0x00, 0x74, 0x00, 0x00, 0x00,
+  0x00, 0x00, 0x00, 0x40, 0x00, 0x00, 0x00, 0x40, 0xdc, 0x00, 0x00, 0x00,
+  0xdc, 0x00, 0x00, 0x00, 0x07, 0x00, 0x00, 0x00, 0x04, 0x00, 0x00, 0x00,
+  0x51, 0xe5, 0x74, 0x64, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+  0x06, 0x00, 0x00, 0x00, 0x10, 0x00, 0x00, 0x00, 0x8d, 0x4c, 0x24, 0x04,
+  0x83, 0xe4, 0xf0, 0xff, 0x71, 0xfc, 0x55, 0x89, 0xe5, 0x53, 0x51, 0xe8,
+  0x38, 0x00, 0x00, 0x00, 0x05, 0xbc, 0x00, 0x00, 0x00, 0x89, 0xc3, 0xe8,
+  0x08, 0x00, 0x00, 0x00, 0x90, 0x59, 0x5b, 0x5d, 0x8d, 0x61, 0xfc, 0xc3,
+  0x55, 0x89, 0xe5, 0x83, 0xec, 0x10, 0xe8, 0x19, 0x00, 0x00, 0x00, 0x05,
+  0x9d, 0x00, 0x00, 0x00, 0xb8, 0x00, 0x00, 0x00, 0x00, 0x89, 0xe1, 0xba,
+  0x46, 0x00, 0x00, 0x40, 0x0f, 0x34, 0x89, 0x45, 0xfc, 0x90, 0xc9, 0xc3,
+  0x8b, 0x04, 0x24, 0xc3, 0x14, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+  0x01, 0x7a, 0x52, 0x00, 0x01, 0x7c, 0x08, 0x01, 0x1b, 0x0c, 0x04, 0x04,
+  0x88, 0x01, 0x00, 0x00, 0x30, 0x00, 0x00, 0x00, 0x1c, 0x00, 0x00, 0x00,
+  0x90, 0xff, 0xff, 0xff, 0x28, 0x00, 0x00, 0x00, 0x00, 0x44, 0x0c, 0x01,
+  0x00, 0x47, 0x10, 0x05, 0x02, 0x75, 0x00, 0x44, 0x0f, 0x03, 0x75, 0x78,
+  0x06, 0x10, 0x03, 0x02, 0x75, 0x7c, 0x53, 0xc1, 0x0c, 0x01, 0x00, 0x41,
+  0xc3, 0x41, 0xc5, 0x43, 0x0c, 0x04, 0x04, 0x00, 0x10, 0x00, 0x00, 0x00,
+  0x50, 0x00, 0x00, 0x00, 0xa8, 0xff, 0xff, 0xff, 0x04, 0x00, 0x00, 0x00,
+  0x00, 0x00, 0x00, 0x00, 0x1c, 0x00, 0x00, 0x00, 0x64, 0x00, 0x00, 0x00,
+  0x70, 0xff, 0xff, 0xff, 0x24, 0x00, 0x00, 0x00, 0x00, 0x41, 0x0e, 0x08,
+  0x85, 0x02, 0x42, 0x0d, 0x05, 0x60, 0xc5, 0x0c, 0x04, 0x04, 0x00, 0x00,
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+  0x96, 0x00, 0x00, 0x00, 0x04, 0x00, 0x00, 0x00, 0x00, 0x00, 0x04, 0x01,
+  0x2a, 0x00, 0x00, 0x00, 0x0c, 0x89, 0x00, 0x00, 0x00, 0x90, 0x00, 0x00,
+  0x00, 0x00, 0x00, 0x00, 0x40, 0x28, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+  0x00, 0x02, 0x01, 0x06, 0x84, 0x00, 0x00, 0x00, 0x02, 0x02, 0x05, 0xcc,
+  0x00, 0x00, 0x00, 0x03, 0x04, 0x05, 0x69, 0x6e, 0x74, 0x00, 0x02, 0x08,
+  0x05, 0x00, 0x00, 0x00, 0x00, 0x02, 0x04, 0x05, 0x05, 0x00, 0x00, 0x00,
+  0x02, 0x01, 0x06, 0x7d, 0x00, 0x00, 0x00, 0x02, 0x01, 0x08, 0x7b, 0x00,
+  0x00, 0x00, 0x02, 0x02, 0x07, 0xb3, 0x00, 0x00, 0x00, 0x02, 0x04, 0x07,
+  0x18, 0x00, 0x00, 0x00, 0x02, 0x08, 0x07, 0x13, 0x00, 0x00, 0x00, 0x02,
+  0x04, 0x07, 0x1d, 0x00, 0x00, 0x00, 0x04, 0x25, 0x00, 0x00, 0x00, 0x7d,
+  0x00, 0x00, 0x00, 0x05, 0x00, 0x06, 0xc6, 0x00, 0x00, 0x00, 0x02, 0x25,
+  0x72, 0x00, 0x00, 0x00, 0x07, 0x0e, 0x00, 0x00, 0x00, 0x01, 0x08, 0x00,
+  0x00, 0x00, 0x40, 0x28, 0x00, 0x00, 0x00, 0x01, 0x9c, 0x00, 0xbd, 0x00,
+  0x00, 0x00, 0x04, 0x00, 0x61, 0x00, 0x00, 0x00, 0x04, 0x01, 0x0d, 0x01,
+  0x00, 0x00, 0x0c, 0xd6, 0x00, 0x00, 0x00, 0xe6, 0x00, 0x00, 0x00, 0x28,
+  0x00, 0x00, 0x40, 0x24, 0x00, 0x00, 0x00, 0x4c, 0x00, 0x00, 0x00, 0x02,
+  0x01, 0x06, 0x84, 0x00, 0x00, 0x00, 0x02, 0x02, 0x05, 0xcc, 0x00, 0x00,
+  0x00, 0x03, 0x04, 0x05, 0x69, 0x6e, 0x74, 0x00, 0x02, 0x08, 0x05, 0x00,
+  0x00, 0x00, 0x00, 0x02, 0x04, 0x05, 0x05, 0x00, 0x00, 0x00, 0x02, 0x01,
+  0x06, 0x7d, 0x00, 0x00, 0x00, 0x02, 0x01, 0x08, 0x7b, 0x00, 0x00, 0x00,
+  0x02, 0x02, 0x07, 0xb3, 0x00, 0x00, 0x00, 0x02, 0x04, 0x07, 0x18, 0x00,
+  0x00, 0x00, 0x02, 0x08, 0x07, 0x13, 0x00, 0x00, 0x00, 0x04, 0x75, 0x33,
+  0x32, 0x00, 0x02, 0x1d, 0x76, 0x00, 0x00, 0x00, 0x02, 0x04, 0x07, 0x1d,
+  0x00, 0x00, 0x00, 0x05, 0x25, 0x00, 0x00, 0x00, 0x88, 0x00, 0x00, 0x00,
+  0x06, 0x00, 0x07, 0xc6, 0x00, 0x00, 0x00, 0x02, 0x25, 0x7d, 0x00, 0x00,
+  0x00, 0x08, 0xdd, 0x00, 0x00, 0x00, 0x01, 0x09, 0x6b, 0x00, 0x00, 0x00,
+  0x28, 0x00, 0x00, 0x40, 0x24, 0x00, 0x00, 0x00, 0x01, 0x9c, 0x09, 0x38,
+  0x00, 0x00, 0x40, 0x11, 0x00, 0x00, 0x00, 0x0a, 0x5f, 0x76, 0x00, 0x01,
+  0x0b, 0x6b, 0x00, 0x00, 0x00, 0x02, 0x91, 0x74, 0x00, 0x00, 0x00, 0x01,
+  0x11, 0x01, 0x25, 0x0e, 0x13, 0x0b, 0x03, 0x0e, 0x1b, 0x0e, 0x11, 0x01,
+  0x12, 0x06, 0x10, 0x17, 0x00, 0x00, 0x02, 0x24, 0x00, 0x0b, 0x0b, 0x3e,
+  0x0b, 0x03, 0x0e, 0x00, 0x00, 0x03, 0x24, 0x00, 0x0b, 0x0b, 0x3e, 0x0b,
+  0x03, 0x08, 0x00, 0x00, 0x04, 0x01, 0x01, 0x49, 0x13, 0x01, 0x13, 0x00,
+  0x00, 0x05, 0x21, 0x00, 0x00, 0x00, 0x06, 0x34, 0x00, 0x03, 0x0e, 0x3a,
+  0x0b, 0x3b, 0x0b, 0x49, 0x13, 0x3f, 0x19, 0x3c, 0x19, 0x00, 0x00, 0x07,
+  0x2e, 0x00, 0x3f, 0x19, 0x03, 0x0e, 0x3a, 0x0b, 0x3b, 0x0b, 0x27, 0x19,
+  0x11, 0x01, 0x12, 0x06, 0x40, 0x18, 0x96, 0x42, 0x19, 0x00, 0x00, 0x00,
+  0x01, 0x11, 0x01, 0x25, 0x0e, 0x13, 0x0b, 0x03, 0x0e, 0x1b, 0x0e, 0x11,
+  0x01, 0x12, 0x06, 0x10, 0x17, 0x00, 0x00, 0x02, 0x24, 0x00, 0x0b, 0x0b,
+  0x3e, 0x0b, 0x03, 0x0e, 0x00, 0x00, 0x03, 0x24, 0x00, 0x0b, 0x0b, 0x3e,
+  0x0b, 0x03, 0x08, 0x00, 0x00, 0x04, 0x16, 0x00, 0x03, 0x08, 0x3a, 0x0b,
+  0x3b, 0x0b, 0x49, 0x13, 0x00, 0x00, 0x05, 0x01, 0x01, 0x49, 0x13, 0x01,
+  0x13, 0x00, 0x00, 0x06, 0x21, 0x00, 0x00, 0x00, 0x07, 0x34, 0x00, 0x03,
+  0x0e, 0x3a, 0x0b, 0x3b, 0x0b, 0x49, 0x13, 0x3f, 0x19, 0x3c, 0x19, 0x00,
+  0x00, 0x08, 0x2e, 0x01, 0x3f, 0x19, 0x03, 0x0e, 0x3a, 0x0b, 0x3b, 0x0b,
+  0x27, 0x19, 0x49, 0x13, 0x11, 0x01, 0x12, 0x06, 0x40, 0x18, 0x97, 0x42,
+  0x19, 0x00, 0x00, 0x09, 0x0b, 0x01, 0x11, 0x01, 0x12, 0x06, 0x00, 0x00,
+  0x0a, 0x34, 0x00, 0x03, 0x08, 0x3a, 0x0b, 0x3b, 0x0b, 0x49, 0x13, 0x02,
+  0x18, 0x00, 0x00, 0x00, 0x1c, 0x00, 0x00, 0x00, 0x02, 0x00, 0x00, 0x00,
+  0x00, 0x00, 0x04, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x40,
+  0x28, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+  0x1c, 0x00, 0x00, 0x00, 0x02, 0x00, 0x9a, 0x00, 0x00, 0x00, 0x04, 0x00,
+  0x00, 0x00, 0x00, 0x00, 0x28, 0x00, 0x00, 0x40, 0x24, 0x00, 0x00, 0x00,
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x48, 0x00, 0x00, 0x00,
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+  0x01, 0x00, 0x00, 0x00, 0x30, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+  0xd8, 0x05, 0x00, 0x00, 0x2a, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+  0x00, 0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00,
+  0x01, 0x00, 0x00, 0x00, 0x02, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+  0x00, 0x00, 0x00, 0x00, 0x04, 0x06, 0x00, 0x00, 0x20, 0x01, 0x00, 0x00,
+  0x0c, 0x00, 0x00, 0x00, 0x0f, 0x00, 0x00, 0x00, 0x04, 0x00, 0x00, 0x00,
+  0x10, 0x00, 0x00, 0x00, 0x09, 0x00, 0x00, 0x00, 0x03, 0x00, 0x00, 0x00,
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x24, 0x07, 0x00, 0x00,
+  0x49, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+  0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x11, 0x00, 0x00, 0x00,
+  0x03, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+  0x6d, 0x07, 0x00, 0x00, 0x99, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+  0x00, 0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
+};
--- a/2
+++ b/2
@ -31,7 +31,7 @@ clean:
 littleclean:	
 	make -C system clean
 	make -C lib clean
-	make -C final littleclean)
+	make -C final littleclean
 	make -C programs clean
 	sync

--- a/system/makefile
+++ b/system/makefile
@ -1,4 +1,4 @@
-GCC=gcc -O0 -g -nostdinc -ffreestanding -fno-builtin -Wall -w -I ../include -m32 -c -o
+GCC=gcc -O0 -g -nostdinc -ffreestanding -fno-builtin -Wall -w -I ../include -m32 -fno-pie -no-pie -c -o
 ASM=nasm
 LINK=ld -m elf_i386 -T linker.lds -n -o