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Crash

http://f.osdev.org/viewtopic.php?t=30848

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Crash

Posted: Sat Sep 24, 2016 12:09 am
by MrLolthe1st
SMM: enter
EAX=00000001 EBX=07fe02d0 ECX=00000000 EDX=00000cfc
ESI=000f102d EDI=0003802d EBP=07fe01e0 ESP=00006ebc
EIP=000f2346 EFL=00000002 [-------] CPL=0 II=0 A20=1 SMM=0 HLT=0
ES =0010 00000000 ffffffff 00cf9300 DPL=0 DS [-WA]
CS =0008 00000000 ffffffff 00cf9b00 DPL=0 CS32 [-RA]
SS =0010 00000000 ffffffff 00cf9300 DPL=0 DS [-WA]
DS =0010 00000000 ffffffff 00cf9300 DPL=0 DS [-WA]
FS =0010 00000000 ffffffff 00cf9300 DPL=0 DS [-WA]
GS =0010 00000000 ffffffff 00cf9300 DPL=0 DS [-WA]
LDT=0000 00000000 0000ffff 00008200 DPL=0 LDT
TR =0000 00000000 0000ffff 00008b00 DPL=0 TSS32-busy
GDT= 000fcd30 00000037
IDT= 000fdb30 00000000
CR0=00000011 CR2=00000000 CR3=00000000 CR4=00000000
DR0=0000000000000000 DR1=0000000000000000 DR2=0000000000000000 DR3=0000000000000000
DR6=00000000ffff0ff0 DR7=0000000000000400
CCS=000f1000 CCD=00000001 CCO=LOGICB
EFER=0000000000000000
SMM: after RSM
EAX=00000001 EBX=07fe02d0 ECX=00000000 EDX=00000cfc
ESI=000f102d EDI=0003802d EBP=07fe01e0 ESP=00006ebc
EIP=000f2346 EFL=00000002 [-------] CPL=0 II=0 A20=1 SMM=0 HLT=0
ES =0010 00000000 ffffffff 00c09300 DPL=0 DS [-WA]
CS =0008 00000000 ffffffff 00c09b00 DPL=0 CS32 [-RA]
SS =0010 00000000 ffffffff 00c09300 DPL=0 DS [-WA]
DS =0010 00000000 ffffffff 00c09300 DPL=0 DS [-WA]
FS =0010 00000000 ffffffff 00c09300 DPL=0 DS [-WA]
GS =0010 00000000 ffffffff 00c09300 DPL=0 DS [-WA]
LDT=0000 00000000 0000ffff 00008200 DPL=0 LDT
TR =0000 00000000 0000ffff 00008b00 DPL=0 TSS32-busy
GDT= 000fcd30 00000037
IDT= 000fdb30 00000000
CR0=00000011 CR2=00000000 CR3=00000000 CR4=00000000
DR0=0000000000000000 DR1=0000000000000000 DR2=0000000000000000 DR3=0000000000000000
DR6=00000000ffff0ff0 DR7=0000000000000400
CCS=00000000 CCD=00000000 CCO=EFLAGS
EFER=0000000000000000
0: v=08 e=0000 i=0 cpl=0 IP=0008:00000000002001a0 pc=00000000002001a0 SP=0000:00000000001fffdc EAX=0000000000201000
EAX=00201000 EBX=0000001e ECX=00000000 EDX=00080206
ESI=000110c6 EDI=00210000 EBP=001ffff4 ESP=001fffdc
EIP=002001a0 EFL=00000202 [-------] CPL=0 II=0 A20=1 SMM=0 HLT=0
ES =0008 00000000 ffffffff 00cf9b00 DPL=0 CS32 [-RA]
CS =0008 00000000 ffffffff 00cf9a00 DPL=0 CS32 [-R-]
SS =0000 00000000 0000ffff 00009300 DPL=0 DS16 [-WA]
DS =0008 00000000 ffffffff 00cf9b00 DPL=0 CS32 [-RA]
FS =0000 00000000 0000ffff 00009300 DPL=0 DS16 [-WA]
GS =0000 00000000 0000ffff 00009300 DPL=0 DS16 [-WA]
LDT=0000 00000000 0000ffff 00008200 DPL=0 LDT
TR =0000 00000000 0000ffff 00008b00 DPL=0 TSS32-busy
GDT= 00001066 0000000f
IDT= 00001020 000007ff
CR0=00000011 CR2=00000000 CR3=00000000 CR4=00000000
DR0=0000000000000000 DR1=0000000000000000 DR2=0000000000000000 DR3=0000000000000000
DR6=00000000ffff0ff0 DR7=0000000000000400
CCS=00000004 CCD=00080206 CCO=EFLAGS
EFER=0000000000000000
check_exception old: 0xffffffff new 0xd
1: v=0d e=0042 i=0 cpl=0 IP=0008:00000000002001a0 pc=00000000002001a0 SP=0000:00000000001fffdc EAX=0000000000201000
EAX=00201000 EBX=0000001e ECX=00000000 EDX=00080206
ESI=000110c6 EDI=00210000 EBP=001ffff4 ESP=001fffdc
EIP=002001a0 EFL=00000202 [-------] CPL=0 II=0 A20=1 SMM=0 HLT=0
ES =0008 00000000 ffffffff 00cf9b00 DPL=0 CS32 [-RA]
CS =0008 00000000 ffffffff 00cf9a00 DPL=0 CS32 [-R-]
SS =0000 00000000 0000ffff 00009300 DPL=0 DS16 [-WA]
DS =0008 00000000 ffffffff 00cf9b00 DPL=0 CS32 [-RA]
FS =0000 00000000 0000ffff 00009300 DPL=0 DS16 [-WA]
GS =0000 00000000 0000ffff 00009300 DPL=0 DS16 [-WA]
LDT=0000 00000000 0000ffff 00008200 DPL=0 LDT
TR =0000 00000000 0000ffff 00008b00 DPL=0 TSS32-busy
GDT= 00001066 0000000f
IDT= 00001020 000007ff
CR0=00000011 CR2=00000000 CR3=00000000 CR4=00000000
DR0=0000000000000000 DR1=0000000000000000 DR2=0000000000000000 DR3=0000000000000000
DR6=00000000ffff0ff0 DR7=0000000000000400
CCS=00000004 CCD=00080206 CCO=EFLAGS
EFER=0000000000000000
check_exception old: 0xd new 0xb
2: v=08 e=0000 i=0 cpl=0 IP=0008:00000000002001a0 pc=00000000002001a0 SP=0000:00000000001fffdc EAX=0000000000201000
EAX=00201000 EBX=0000001e ECX=00000000 EDX=00080206
ESI=000110c6 EDI=00210000 EBP=001ffff4 ESP=001fffdc
EIP=002001a0 EFL=00000202 [-------] CPL=0 II=0 A20=1 SMM=0 HLT=0
ES =0008 00000000 ffffffff 00cf9b00 DPL=0 CS32 [-RA]
CS =0008 00000000 ffffffff 00cf9a00 DPL=0 CS32 [-R-]
SS =0000 00000000 0000ffff 00009300 DPL=0 DS16 [-WA]
DS =0008 00000000 ffffffff 00cf9b00 DPL=0 CS32 [-RA]
FS =0000 00000000 0000ffff 00009300 DPL=0 DS16 [-WA]
GS =0000 00000000 0000ffff 00009300 DPL=0 DS16 [-WA]
LDT=0000 00000000 0000ffff 00008200 DPL=0 LDT
TR =0000 00000000 0000ffff 00008b00 DPL=0 TSS32-busy
GDT= 00001066 0000000f
IDT= 00001020 000007ff
CR0=00000011 CR2=00000000 CR3=00000000 CR4=00000000
DR0=0000000000000000 DR1=0000000000000000 DR2=0000000000000000 DR3=0000000000000000
DR6=00000000ffff0ff0 DR7=0000000000000400
CCS=00000004 CCD=00080206 CCO=EFLAGS
EFER=0000000000000000
check_exception old: 0x8 new 0xd



kernel.c:
#define DESC 1
#define IT 0x000000//Адресс IDT
#define IR 0x000800
#define rm 0xB8000
#define SCS 0x8
#define IRQ_HANDLER(func) void func (void)\
{asm(#func ": pusha \n call _" #func " \n movb $0x20, %al \n outb %al, $0x20 \n popa \n iret \n");}\
void _ ## func(void)
//Устанавливает прервывание в IDT
struct desc_ptr {
short size;
short address;
} __attribute__((packed));

struct gate_desc {
unsigned int a;
unsigned int b;
} __attribute__((packed));

struct desc_ptr idt_descr;
struct gate_desc idt_table[256];

struct desc_ptr gdt_descr;
void initalize_idt_entry(int vector, void (*func)(void))
{
unsigned long addr = (unsigned long)func;
int high_address = addr & 0xFFFF0000;
int low_address = addr & 0x0000FFFF;
int DPL = 0;/*descriptor privilege level*/
int P = 1;/*selector present flag*/
int Selector = 1<<3;/*segment selector for destination code segment.*/
int D = 1;/*size of gate: 1=32bit; 0=16bit*/
int type=14;
idt_table[vector].b=high_address;
idt_table[vector].b|=P<<15;
idt_table[vector].b|=DPL<<13;
idt_table[vector].b|=D<<11;
idt_table[vector].b|=type<<8;

idt_table[vector].a=low_address;
idt_table[vector].a|=Selector<<16;
}
void load_idt(const struct desc_ptr *dtr)
{
asm volatile("lidt %0"::"m" (*dtr));
}

void initalize_interrupts()
{
initalize_idt();
idt_descr.size=(256*8)-1;
idt_descr.address=(unsigned int)idt_table;
load_idt(&idt_descr);
int_e();
}
// Разрешаем прерывания
void int_e()
{
asm("sti");
}
// Запрещаем прерывания
void int_d()
{
asm("cli");
}
#define RAM 0xB8000
void opw(unsigned short value,unsigned int port){
asm("outw %w0,%w1":: "a"(value), "d"(port));
}
void opb(unsigned char value,unsigned int port){

asm("outb %b0,%w1":: "a"(value), "d"(port));
}
int ipb(unsigned int port){
unsigned char value;
asm("inb %w1, %b0": "=a"(value): "d"(port));
return value;
}
void k_main(){
char *vid=RAM;
int key;initalize_interrupts();
for(;;){

}
}






//---------
extern void interrupt_wrapper_0(){}
extern void interrupt_wrapper_1(){}
extern void interrupt_wrapper_2(){}
extern void interrupt_wrapper_3(){}
extern void interrupt_wrapper_4(){}
extern void interrupt_wrapper_5(){}
extern void interrupt_wrapper_6(){}
extern void interrupt_wrapper_7(){}
extern void interrupt_wrapper_8(){}
extern void interrupt_wrapper_9(){}
extern void interrupt_wrapper_10(){}
extern void interrupt_wrapper_11(){}
extern void interrupt_wrapper_12(){}
extern void interrupt_wrapper_13(){}
extern void interrupt_wrapper_14(){}
extern void interrupt_wrapper_15(){}
extern void interrupt_wrapper_16(){}
extern void interrupt_wrapper_17(){}
extern void interrupt_wrapper_18(){}
extern void interrupt_wrapper_19(){}
extern void interrupt_wrapper_20(){}
void initalize_idt(){
initalize_idt_entry(0,interrupt_wrapper_0);
initalize_idt_entry(1,interrupt_wrapper_1);
initalize_idt_entry(2,interrupt_wrapper_2);
initalize_idt_entry(3,interrupt_wrapper_3);
initalize_idt_entry(4,interrupt_wrapper_4);
initalize_idt_entry(5,interrupt_wrapper_5);
initalize_idt_entry(6,interrupt_wrapper_6);
initalize_idt_entry(7,interrupt_wrapper_7);
initalize_idt_entry(8,interrupt_wrapper_8);
initalize_idt_entry(9,interrupt_wrapper_9);
initalize_idt_entry(10,interrupt_wrapper_10);
initalize_idt_entry(11,interrupt_wrapper_11);
initalize_idt_entry(12,interrupt_wrapper_12);
initalize_idt_entry(13,interrupt_wrapper_13);
initalize_idt_entry(14,interrupt_wrapper_14);
initalize_idt_entry(15,interrupt_wrapper_15);
initalize_idt_entry(16,interrupt_wrapper_16);
initalize_idt_entry(17,interrupt_wrapper_17);
initalize_idt_entry(18,interrupt_wrapper_18);
initalize_idt_entry(19,interrupt_wrapper_19);
initalize_idt_entry(20,interrupt_wrapper_20);
}
runs init_e()
then it crashed

Re: Crash

Posted: Sat Sep 24, 2016 2:36 am
by Ch4ozz
Open your compiled kernel in a disassembler and go to address 0x002001a0

Re: Crash

Posted: Sat Sep 24, 2016 2:39 am
by thepowersgang
May I direct you to the forum rules? (Specifically the section on asking smart questions)

At the risk of encouraging this behaviour... what happens is your code "Triple Faults" because you loaded a bad value into a segment register and didn't have a working IDT for it to use to handle the error. It's hard to know more with the code as it is.
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