src/arch/x86/except_c.hpp

Idź do dokumentacji tego pliku.

/* define for src/arch/x86/except_c.cpp */
#ifndef _CORE_ARCH_X86_EXCEPT_C_HPP
#define _CORE_ARCH_X86_EXCEPT_C_HPP

#include "src/arch/x86/interr.hpp"

extern void (*exc)();
extern void (*irq_h)();

namespace Arch {
namespace x86 {
namespace Interr {

bool isInInterruptHandler();

const uint32 CHAINHANDLERSTACKCOPY      = sizeof(uint32) * 10 +         /*iret: esp,ss,eflags,eip,cs; c1,c2; ebp; call: eip,ebp */
                                                        sizeof(struct reg_dump);        /* macro_push_context */
const uint32 CHAINREGCOPY               = sizeof(uint32) * 3;           /* ebp, call: eip, ebp */

const uint32 STACKSZ    = 0x4000;
const uint32 STACKCNT   = 16;

extern char *stackPtr[STACKCNT];
extern uint32 volatile stackVac;


//this is the data type returned to the exception handler
struct except2_t
 {
        uint32 ebp;     //internal
        struct reg_dump r;
        uint32 c1, c2;  //c1- interrupt no., c2- error code or zero
        uint32 cr2;
        uint32 eip,cs,eflags,esp,ss;
        char *stack;
        char *reta;
 };

struct except_t
 {
        uint32 cr3, cr2, cr0;           /*values as seen in the thread's context*/
        union
         {
        uint32 thread_esp;
        
        struct {
                uint32 thread_ebp;
                reg_dump regs;          /*register dump, from the thread's context*/
                uint32 code;            /*interrupt number*/
                uint32 val;             /*value given from the cpu*/
                uint32 thread_eip;      /*from the x86 stackframe*/
                uint32 thread_cs;
                uint32 thread_eflags;
                union
                 {
                        uint32 thread_3_esp;    /*only when interrupting from lower level code*/
                        uint32 *stack;
                 } uu;
                uint32 thread_3_ss;     /*as well*/
        } *iret;

        uint32 *stack;
         } uu;
        uint32 interrupt_stack_offset;  /*private for the interrupt mechanism*/
 };

/*this is a list of exception names, used in verbose exception handlers*/
extern const char *except_names[0x20];

/*int nos*/
const uint32 INT_DIV0   = 0x00;
const uint32 INT_OPCODE = 0x06;
const uint32 INT_GPF    = 0x0d;
const uint32 INT_PF     = 0x0e;
const uint32 SYSENT     = 0x30;

//this is used for interrupt chains
struct list_t
 {
        list_t *next;
        int (*proc)(except2_t*);
 };

//we declare a list of chains for all exceptions and irqs
extern list_t* int_lists[0x31]; 
extern int (*first_routine[0x31])(except2_t*);  /*list of procs to be executed as first-try for each interrupt*/

/*const for Exception()*/
int Exception(except2_t *code); //for unhandled exceptions
int PageFault(except2_t *code); //for invalid page faults
void double_fault() __attribute__ ((noreturn)); //for kernel double faults
void stack_fault() __attribute__ ((noreturn));  //for kernel stack faults
int Irq_H(except2_t *code);

// extern void chain_handler(except_t *code);
struct chh_t
 {
        uint32 ebp;
        struct reg_dump r;
        uint32 c1,c2;
        uint32 eip;
        uint32 cs;
        uint32 eflags;
 };

void chain_handler(struct chh_t code);
extern uint32 add2interr_chain(uint32,int (*proc)(except2_t*));
void install_first_routine(uint32 n, uint32 (*proc)(except2_t*));       /*install first routine handler*/
uint32 del_chainHdl(uint32 intno, uint32 ptr);
void init_int_chains(idt_service *ptr);
void done_int_chains();

/*except.s*/
/*stack management*/
extern uint32 free_stacks[];
extern uint32 free_stacks_ptr;
/*excepts*/
extern void intr0x00() asm ("intr0x00");
extern void intr0x01() asm ("intr0x01");
extern void intr0x02() asm ("intr0x02");
extern void intr0x03() asm ("intr0x03");
extern void intr0x04() asm ("intr0x04");
extern void intr0x05() asm ("intr0x05");
extern void intr0x06() asm ("intr0x06");
extern void intr0x07() asm ("intr0x07");
extern void intr0x08() asm ("intr0x08");
extern void intr0x09() asm ("intr0x09");
extern void intr0x0a() asm ("intr0x0a");
extern void intr0x0b() asm ("intr0x0b");
extern void intr0x0c() asm ("intr0x0c");
extern void intr0x0d() asm ("intr0x0d");
extern void intr0x0e() asm ("intr0x0e");
extern void intr0x0f() asm ("intr0x0f");
extern void intr0x10() asm ("intr0x10");
extern void intr0x11() asm ("intr0x11");
extern void intr0x12() asm ("intr0x12");
extern void intr0x13() asm ("intr0x13");
extern void intr0x14() asm ("intr0x14");
extern void intr0x15() asm ("intr0x15");
extern void intr0x16() asm ("intr0x16");
extern void intr0x17() asm ("intr0x17");
extern void intr0x18() asm ("intr0x18");
extern void intr0x19() asm ("intr0x19");
extern void intr0x1a() asm ("intr0x1a");
extern void intr0x1b() asm ("intr0x1b");
extern void intr0x1c() asm ("intr0x1c");
extern void intr0x1d() asm ("intr0x1d");
extern void intr0x1e() asm ("intr0x1e");
extern void intr0x1f() asm ("intr0x1f");
/*irqs*/
extern void intr0x20() asm ("intr0x20");
extern void intr0x21() asm ("intr0x21");
extern void intr0x22() asm ("intr0x22");
extern void intr0x23() asm ("intr0x23");
extern void intr0x24() asm ("intr0x24");
extern void intr0x25() asm ("intr0x25");
extern void intr0x26() asm ("intr0x26");
extern void intr0x27() asm ("intr0x27");
extern void intr0x28() asm ("intr0x28");
extern void intr0x29() asm ("intr0x29");
extern void intr0x2a() asm ("intr0x2a");
extern void intr0x2b() asm ("intr0x2b");
extern void intr0x2c() asm ("intr0x2c");
extern void intr0x2d() asm ("intr0x2d");
extern void intr0x2e() asm ("intr0x2e");
extern void intr0x2f() asm ("intr0x2f");


   };   /*namespace Interr*/
  };    /*namespace x86*/
 };     /*namespace Arch*/

#endif

---