sel4-sys 0.0.28

Rust interface to the seL4 kernel
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/*
 * Copyright 2014, General Dynamics C4 Systems
 *
 * This software may be distributed and modified according to the terms of
 * the GNU General Public License version 2. Note that NO WARRANTY is provided.
 * See "LICENSE_GPLv2.txt" for details.
 *
 * @TAG(GD_GPL)
 */

#include <config.h>
#include <arch/api/constants.h>
#include <arch/machine/registerset.h>
#include <machine/fpu.h>
#include <arch/object/structures.h>
#include <machine/debug.h>

const register_t msgRegisters[] = {
    EDI, EBP
};

const register_t frameRegisters[] = {
    FaultIP, ESP, FLAGS, EAX, EBX, ECX, EDX, ESI, EDI, EBP
};

const register_t gpRegisters[] = {
    TLS_BASE, FS, GS
};

void Mode_initContext(user_context_t* context)
{
    context->registers[EAX] = 0;
    context->registers[EBX] = 0;
    context->registers[ECX] = 0;
    context->registers[EDX] = 0;
    context->registers[ESI] = 0;
    context->registers[EDI] = 0;
    context->registers[EBP] = 0;
    context->registers[DS] = SEL_DS_3;
    context->registers[ES] = SEL_DS_3;
    context->registers[FS] = SEL_NULL;
    context->registers[GS] = SEL_NULL;
    context->registers[ESP] = 0;
}

word_t Mode_sanitiseRegister(register_t reg, word_t v)
{
    if (reg == FS || reg == GS) {
        if (v != SEL_TLS && v != SEL_IPCBUF) {
            v = 0;
        }
    }
    return v;
}