trap_handler.c File Reference

#include <arch/encoding.h>
#include <arch/exception.h>
#include <console/console.h>
#include <vm.h>
#include <mcall.h>
#include <sbi.h>
#include <types.h>

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Functions
static const char *	mstatus_to_previous_mode (uintptr_t ms)
static void	print_trap_information (const trapframe *tf)
static void	interrupt_handler (trapframe *tf)
void	trap_handler (trapframe *tf)
void	redirect_trap (void)

Variables
static const char *const	exception_names []

Function Documentation

interrupt_handler()

static void interrupt_handler ( trapframe *  tf )

static

Definition at line 71 of file trap_handler.c.

References BIOS_EMERG, trapframe::cause, HLS, IPI_FENCE_I, IPI_SFENCE_VMA, IPI_SFENCE_VMA_ASID, IPI_SHUTDOWN, IPI_SOFT, IRQ_M_SOFT, IRQ_M_TIMER, MIP_MTIP, MIP_SSIP, MIP_STIP, print_trap_information(), and printk.

Referenced by trap_handler().

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mstatus_to_previous_mode()

static const char* mstatus_to_previous_mode ( uintptr_t  ms )

static

Definition at line 33 of file trap_handler.c.

References MSTATUS_MPP.

Referenced by print_trap_information().

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print_trap_information()

static void print_trap_information ( const trapframe *  tf )

static

Definition at line 45 of file trap_handler.c.

References ARRAY_SIZE, trapframe::badvaddr, BIOS_DEBUG, trapframe::cause, trapframe::epc, exception_names, trapframe::gpr, MSTATUS_MPRV, mstatus_to_previous_mode(), printk, and trapframe::status.

Referenced by interrupt_handler(), and trap_handler().

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redirect_trap()

void redirect_trap

(

void

)

Definition at line 151 of file trap_handler.c.

References EXTRACT_FIELD, INSERT_FIELD, MSTATUS_MPP, and MSTATUS_SPP.

Referenced by handle_misaligned().

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trap_handler()

void trap_handler

(

trapframe *

tf

)

Definition at line 111 of file trap_handler.c.

References BIOS_EMERG, trapframe::cause, CAUSE_BREAKPOINT, CAUSE_FETCH_ACCESS, CAUSE_HYPERVISOR_ECALL, CAUSE_ILLEGAL_INSTRUCTION, CAUSE_LOAD_ACCESS, CAUSE_MACHINE_ECALL, CAUSE_MISALIGNED_FETCH, CAUSE_MISALIGNED_LOAD, CAUSE_MISALIGNED_STORE, CAUSE_STORE_ACCESS, CAUSE_SUPERVISOR_ECALL, CAUSE_USER_ECALL, die(), handle_misaligned(), handle_sbi(), interrupt_handler(), print_trap_information(), and printk.

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Variable Documentation

exception_names

const char* const exception_names[]

static

Initial value:

= {
        "Instruction address misaligned",
        "Instruction access fault",
        "Illegal instruction",
        "Breakpoint",
        "Load address misaligned",
        "Load access fault",
        "Store address misaligned",
        "Store access fault",
        "Environment call from U-mode",
        "Environment call from S-mode",
        "Reserved (10)",
        "Environment call from M-mode",
        "Instruction page fault",
        "Load page fault",
        "Reserved (14)",
        "Store page fault",
}

Definition at line 14 of file trap_handler.c.

Referenced by print_trap_information().