exception.c File Reference

#include <arch/cpu.h>
#include <arch/exception.h>
#include <commonlib/helpers.h>
#include <console/console.h>
#include <console/streams.h>
#include <cpu/x86/cr.h>
#include <cpu/x86/lapic.h>
#include <stdint.h>
#include <string.h>
#include <arch/registers.h>

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Data Structures
struct	intr_gate
struct	lidtarg

Macros
#define	MDUMP_SIZE   0x80
#define	GATE_P   (1 << 15)
#define	GATE_DPL(x)   (((x) & 0x3) << 13)
#define	GATE_SIZE_16   (0 << 11)
#define	GATE_SIZE_32   (1 << 11)
#define	IGATE_FLAGS   (GATE_P | GATE_DPL(0) | GATE_SIZE_32 | (0x6 << 8))

Functions
void	x86_exception (struct eregs *info)
static struct intr_gate idt[ARRAY_SIZE(intr_entries)]	__aligned (8)
static uint16_t	get_cs (void)
static void	load_idt (void *table, size_t sz)
asmlinkage void	exception_init (void)

Variables
struct intr_gate	__packed
u8	vec0 []
u8	vec1 []
u8	vec2 []
u8	vec3 []
u8	vec4 []
u8	vec5 []
u8	vec6 []
u8	vec7 []
u8	vec8 []
u8	vec9 []
u8	vec10 []
u8	vec11 []
u8	vec12 []
u8	vec13 []
u8	vec14 []
u8	vec15 []
u8	vec16 []
u8	vec17 []
u8	vec18 []
u8	vec19 []
static const uintptr_t	intr_entries []
struct lidtarg	idtarg

Macro Definition Documentation

GATE_DPL

#define GATE_DPL

(

x

)

(((x) & 0x3) << 13)

Definition at line 559 of file exception.c.

GATE_P

#define GATE_P   (1 << 15)

Definition at line 558 of file exception.c.

GATE_SIZE_16

#define GATE_SIZE_16   (0 << 11)

Definition at line 560 of file exception.c.

GATE_SIZE_32

#define GATE_SIZE_32   (1 << 11)

Definition at line 561 of file exception.c.

IGATE_FLAGS

#define IGATE_FLAGS   (GATE_P | GATE_DPL(0) | GATE_SIZE_32 | (0x6 << 8))

Definition at line 563 of file exception.c.

MDUMP_SIZE

#define MDUMP_SIZE   0x80

Function Documentation

__aligned()

static struct intr_gate idt [ARRAY_SIZE(intr_entries)] __aligned ( 8  )

static

exception_init()

asmlinkage void exception_init

(

void

)

Definition at line 641 of file exception.c.

References ARRAY_SIZE, get_cs(), IGATE_FLAGS, intr_entries, and load_idt().

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get_cs()

static uint16_t get_cs ( void  )

inlinestatic

Definition at line 596 of file exception.c.

Referenced by exception_init().

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load_idt()

static void load_idt ( void *  table, size_t  sz  )

static

Definition at line 623 of file exception.c.

References ENV_RAMSTAGE, idtarg, lidtarg::limit, and memcpy().

Referenced by exception_init().

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x86_exception()

void x86_exception

(

struct eregs *

info

)

Definition at line 378 of file exception.c.

References addr, ALIGN_DOWN, ARRAY_SIZE, BIOS_EMERG, CONFIG, cpu_index(), die(), info, lapicid(), length, MDUMP_SIZE, memcpy(), printk, and read_cr2().

Referenced by intXX_exception_handler().

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Variable Documentation

__packed

struct lidtarg __packed

idtarg

struct lidtarg idtarg

Definition at line 596 of file exception.c.

Referenced by load_idt(), and setup_default_sipi_vector_params().

intr_entries

const uintptr_t intr_entries[]

static

Initial value:

= {
        (uintptr_t)vec0, (uintptr_t)vec1, (uintptr_t)vec2, (uintptr_t)vec3,
        (uintptr_t)vec4, (uintptr_t)vec5, (uintptr_t)vec6, (uintptr_t)vec7,
        (uintptr_t)vec8, (uintptr_t)vec9, (uintptr_t)vec10, (uintptr_t)vec11,
        (uintptr_t)vec12, (uintptr_t)vec13, (uintptr_t)vec14, (uintptr_t)vec15,
        (uintptr_t)vec16, (uintptr_t)vec17, (uintptr_t)vec18, (uintptr_t)vec19,
}

Definition at line 586 of file exception.c.

Referenced by exception_init().

vec0

u8 vec0[]

extern

vec1

u8 vec1[]

Definition at line 582 of file exception.c.

vec10

u8 vec10[]

Definition at line 583 of file exception.c.

vec11

u8 vec11[]

Definition at line 583 of file exception.c.

vec12

u8 vec12[]

Definition at line 583 of file exception.c.

vec13

u8 vec13[]

Definition at line 583 of file exception.c.

vec14

u8 vec14[]

Definition at line 583 of file exception.c.

vec15

u8 vec15[]

Definition at line 583 of file exception.c.

vec16

u8 vec16[]

extern

vec17

u8 vec17[]

Definition at line 584 of file exception.c.

vec18

u8 vec18[]

Definition at line 584 of file exception.c.

vec19

u8 vec19[]

Definition at line 584 of file exception.c.

vec2

u8 vec2[]

Definition at line 582 of file exception.c.

vec3

u8 vec3[]

Definition at line 582 of file exception.c.

vec4

u8 vec4[]

Definition at line 582 of file exception.c.

vec5

u8 vec5[]

Definition at line 582 of file exception.c.

vec6

u8 vec6[]

Definition at line 582 of file exception.c.

vec7

u8 vec7[]

Definition at line 582 of file exception.c.

vec8

u8 vec8[]

extern

vec9

u8 vec9[]

Definition at line 583 of file exception.c.