libsel4utils/arch_include/x86/sel4utils/arch/util.h

/*
 * Copyright 2017, Data61
 * Commonwealth Scientific and Industrial Research Organisation (CSIRO)
 * ABN 41 687 119 230.
 *
 * This software may be distributed and modified according to the terms of
 * the BSD 2-Clause license. Note that NO WARRANTY is provided.
 * See "LICENSE_BSD2.txt" for details.
 *
 * @TAG(DATA61_BSD)
 */
#pragma once

#include <stdint.h>
#include <sel4/sel4.h>
#include <sel4/faults.h>
#include <sel4utils/sel4_arch/util.h>
#include <utils/arith.h>

#define ARCH_SYSCALL_INSTRUCTION_SIZE 2

static inline int
sel4utils_is_read_fault(void)
{
    seL4_Word fsr = seL4_GetMR(seL4_VMFault_FSR);
    return (fsr & (BIT(1))) == 0;
}