Exemplo n.º 1
0
static forceinline
size_t bitmap_search_0(const BITMAP_LIMB_T *bitmap)
{
    BITMAP_LIMB_T t;
    size_t ret;
    for (ret = 0; 
         ((t = *bitmap++) == ~(BITMAP_LIMB_T)0); 
         ret += sizeof(BITMAP_LIMB_T)*CHAR_BIT)
        ;
    if (!t) return ret;
    else return ret + CTZ(~t);
}
Exemplo n.º 2
0
/* Executes the registered callback for incoming IRQS */
static void
irq_server_node_handle_irq(struct irq_server_node *n, uint32_t badge)
{
    struct irq_data* irqs;
    irqs = n->irqs;
    /* Mask out reserved bits */
    badge = badge & n->badge_mask;
    /* For each bit, call the registered handler */
    while (badge) {
        int irq_idx;
        struct irq_data* irq;
        irq_idx = CTZ(badge);
        irq = &irqs[irq_idx];
        DIRQSERVER("Received IRQ %d, badge 0x%x, index %d\n", irq->irq, (unsigned)badge, irq_idx);
        irq->cb(irq);
        badge &= ~BIT(irq_idx);
    }
}
Exemplo n.º 3
0
{
    seL4_Word va;

    va = DITE_HEADER_START - (1 << bits);

    /* Ensure we are aligned to bits. If not, round down. */
    va = va & ~((1 << bits) - 1);

    return va;
}

static void*
__map_device_page_failsafe(void* cookie UNUSED, uintptr_t paddr, size_t size,
                           int cached UNUSED, ps_mem_flags_t flags UNUSED)
{
    int bits = CTZ(size);
    int error;
    seL4_Word vaddr = 0;
    cspacepath_t dest;

    if (device_cap != 0) {
        /* we only support a single page for the serial */
        for (;;);
    }
    error = sel4platsupport_copy_frame_cap(vka, simple, (void *) paddr, bits, &dest);
    if (error != seL4_NoError) {
        goto error;
    }
    device_cap = dest.capPtr;
    
    vaddr = platsupport_alloc_device_vaddr(bits);
Exemplo n.º 4
0
static int
test_large_page_flush_operation(env_t env)
{
    int num_frame_types = ARRAY_SIZE(frame_types);
    seL4_CPtr frames[num_frame_types];
    int error;
    vka_t *vka = &env->vka;
    bool pt_mapped = false;

    /* Grab some free vspace big enough to hold all the tests. */
    seL4_Word vstart;
    reservation_t reserve = vspace_reserve_range(&env->vspace, 2 * (1 << 25),
                                                  seL4_AllRights, 1, (void **) &vstart);
    test_assert(reserve.res != 0);
    vstart = ALIGN_UP(vstart, (1 << 25));

    /* Create us some frames to play with. */
    for (int i = 0; i < num_frame_types; i++) {
        frames[i] = vka_alloc_frame_leaky(vka, CTZ(frame_types[i].size));
        assert(frames[i]);
    }

    /* Also create a pagetable to map the pages into. */
    seL4_CPtr pt = vka_alloc_page_table_leaky(vka);

    /* Map the pages in. */
    for (int i = 0; i < num_frame_types; i++) {
        if (frame_types[i].need_pt && !pt_mapped) {
            /* Map the pagetable in. */
            error = seL4_ARCH_PageTable_Map(pt, env->page_directory,
                                            vstart + frame_types[i].vaddr_offset,
                                            seL4_ARCH_Default_VMAttributes);
            test_assert(error == 0);

            pt_mapped = true;
        }

        error = seL4_ARCH_Page_Map(frames[i], env->page_directory,
                                   vstart + frame_types[i].vaddr_offset, seL4_AllRights,
                                   seL4_ARCH_Default_VMAttributes);
        test_assert(error == 0);
    }

    /* See if we can invoke page flush on each of them */
    for (int i = 0; i < num_frame_types; i++) {
        error = seL4_ARM_Page_Invalidate_Data(frames[i], 0, frame_types[i].size);
        test_assert(error == 0);
        error = seL4_ARM_Page_Clean_Data(frames[i], 0, frame_types[i].size);
        test_assert(error == 0);
        error = seL4_ARM_Page_CleanInvalidate_Data(frames[i], 0, frame_types[i].size);
        test_assert(error == 0);
        error = seL4_ARM_Page_Unify_Instruction(frames[i], 0, frame_types[i].size);
        test_assert(error == 0);
        error = seL4_ARM_PageDirectory_Invalidate_Data(env->page_directory, vstart + frame_types[i].vaddr_offset, vstart + frame_types[i].vaddr_offset + frame_types[i].size);
        test_assert(error == 0);
        error = seL4_ARM_PageDirectory_Clean_Data(env->page_directory, vstart + frame_types[i].vaddr_offset, vstart + frame_types[i].vaddr_offset + frame_types[i].size);
        test_assert(error == 0);
        error = seL4_ARM_PageDirectory_CleanInvalidate_Data(env->page_directory, vstart + frame_types[i].vaddr_offset, vstart + frame_types[i].vaddr_offset + frame_types[i].size);
        test_assert(error == 0);
        error = seL4_ARM_PageDirectory_Unify_Instruction(env->page_directory, vstart + frame_types[i].vaddr_offset, vstart + frame_types[i].vaddr_offset + frame_types[i].size);
        test_assert(error == 0);
    }

    return sel4test_get_result();
}
Exemplo n.º 5
0
static uint32_t FFS(uint32_t x)
{
	if(x == 0) return 0;
	return CTZ(x) + 1;
}
Exemplo n.º 6
0
Arquivo: boot.c Projeto: dnm/seL4
/**
  DONT_TRANSLATE
*/
BOOT_CODE static uint32_t boot_ctz (uint32_t x)
{
    return CTZ (x);
}