static void handle_attribute_aligned(const attribute_t *attribute,
entity_t *entity)
{
int alignment = 32; /* TODO: fill in maximum useful alignment for
target machine */
if (attribute->a.arguments) {
attribute_argument_t *argument = attribute->a.arguments;
alignment = fold_expression_to_int(argument->v.expression);
}
if (!is_po2(alignment)) {
errorf(&attribute->pos, "alignment must be a power of 2 but is %d", alignment);
return;
}
if (alignment <= 0) {
errorf(&attribute->pos, "alignment must be bigger than 0 but is %d", alignment);
return;
}
switch (entity->kind) {
case DECLARATION_KIND_CASES:
entity->declaration.alignment = alignment;
break;
case ENTITY_STRUCT:
case ENTITY_UNION:
entity->compound.alignment = MAX(entity->compound.alignment, alignment);
break;
default:
warningf(WARN_OTHER, &attribute->pos, "alignment attribute specification on %N ignored", entity);
break;
}
}
void
stp_dither_matrix_iterated_init(stp_dither_matrix_impl_t *mat, size_t size,
size_t expt, const unsigned *array)
{
int i;
int x, y;
mat->base = size;
mat->exp = expt;
mat->x_size = 1;
for (i = 0; i < expt; i++)
mat->x_size *= mat->base;
mat->y_size = mat->x_size;
mat->total_size = mat->x_size * mat->y_size;
mat->matrix = stp_malloc(sizeof(unsigned) * mat->x_size * mat->y_size);
for (x = 0; x < mat->x_size; x++)
for (y = 0; y < mat->y_size; y++)
{
mat->matrix[x + y * mat->x_size] =
calc_ordered_point(x, y, mat->exp, 1, mat->base, array);
mat->matrix[x + y * mat->x_size] =
(double) mat->matrix[x + y * mat->x_size] * 65536.0 /
(double) (mat->x_size * mat->y_size);
}
mat->last_x = mat->last_x_mod = 0;
mat->last_y = mat->last_y_mod = 0;
mat->index = 0;
mat->i_own = 1;
if (is_po2(mat->x_size))
mat->fast_mask = mat->x_size - 1;
else
mat->fast_mask = 0;
}
void
stp_dither_matrix_init_short(stp_dither_matrix_impl_t *mat, int x_size, int y_size,
const unsigned short *array, int transpose,
int prescaled)
{
int x, y;
mat->base = x_size;
mat->exp = 1;
mat->x_size = x_size;
mat->y_size = y_size;
mat->total_size = mat->x_size * mat->y_size;
mat->matrix = stp_malloc(sizeof(unsigned) * mat->x_size * mat->y_size);
for (x = 0; x < mat->x_size; x++)
for (y = 0; y < mat->y_size; y++)
{
if (transpose)
mat->matrix[x + y * mat->x_size] = array[y + x * mat->y_size];
else
mat->matrix[x + y * mat->x_size] = array[x + y * mat->x_size];
if (!prescaled)
mat->matrix[x + y * mat->x_size] =
(double) mat->matrix[x + y * mat->x_size] * 65536.0 /
(double) (mat->x_size * mat->y_size);
}
mat->last_x = mat->last_x_mod = 0;
mat->last_y = mat->last_y_mod = 0;
mat->index = 0;
mat->i_own = 1;
if (is_po2(mat->x_size))
mat->fast_mask = mat->x_size - 1;
else
mat->fast_mask = 0;
}
struct uio_dma_area *uio_dma_alloc(int fd, unsigned int size,
unsigned int cache, uint64_t dma_mask, unsigned int memnode)
{
struct uio_dma_area *da;
struct uio_dma_alloc_req areq;
struct uio_dma_free_req freq;
unsigned int chunk_size;
int err;
da = malloc(sizeof(*da));
if (!da)
return NULL;
areq.cache = cache;
areq.dma_mask = dma_mask;
areq.memnode = memnode;
areq.mmap_offset = 0;
areq.flags = 0;
/* Try allocating smallest number of chunks.
* We only allocate power of two sized chunks so that we could
* avoid division in uio_dma_addr() function. */
err = 0;
for (chunk_size = roundup_po2(size); chunk_size; chunk_size >>= 1) {
areq.chunk_size = chunk_size;
areq.chunk_count = (size + chunk_size - 1) / chunk_size;
err = ioctl(fd, UIO_DMA_ALLOC, (unsigned long) &areq);
if (!err)
break;
}
if (err) {
free(da);
return NULL;
}
if (!is_po2(areq.chunk_size)) {
errno = -EILSEQ;
goto failed;
}
da->size = areq.chunk_size * areq.chunk_count;
da->chunk_count = areq.chunk_count;
da->chunk_size = areq.chunk_size;
da->mmap_offset = areq.mmap_offset;
da->addr = mmap(NULL, da->size, PROT_READ | PROT_WRITE, MAP_SHARED, fd, da->mmap_offset);
if (da->addr == MAP_FAILED)
goto failed;
return da;
failed:
/* We need to free the area we just requested from the kernel. */
err = errno;
freq.mmap_offset = da->mmap_offset;
ioctl(fd, UIO_DMA_FREE, (unsigned long) &freq);
free(da);
errno = err;
return NULL;
}
void lower_alloc(ir_graph *irg, unsigned new_stack_alignment, bool lower_consts,
long new_addr_delta)
{
if (!is_po2(stack_alignment))
panic("stack alignment not a power of 2");
addr_delta = new_addr_delta;
stack_alignment = new_stack_alignment;
lower_constant_sizes = lower_consts;
ir_nodeset_init(&transformed);
irg_walk_graph(irg, lower_alloca_free, NULL, NULL);
ir_nodeset_destroy(&transformed);
}
void
stp_dither_matrix_init_from_dither_array(stp_dither_matrix_impl_t *mat,
const stp_array_t *array,
int transpose)
{
int x, y;
size_t count;
const unsigned short *vec;
int x_size, y_size;
const stp_sequence_t *seq = stp_array_get_sequence(array);
stp_array_get_size(array, &x_size, &y_size);
vec = stp_sequence_get_ushort_data(seq, &count);
mat->base = x_size;
mat->exp = 1;
if (transpose)
{
mat->x_size = y_size;
mat->y_size = x_size;
}
else
{
mat->x_size = x_size;
mat->y_size = y_size;
}
mat->total_size = mat->x_size * mat->y_size;
mat->matrix = stp_malloc(sizeof(unsigned) * mat->x_size * mat->y_size);
for (x = 0; x < x_size; x++)
for (y = 0; y < y_size; y++)
{
if (transpose)
mat->matrix[y + x * y_size] = vec[x + y * x_size];
else
mat->matrix[x + y * x_size] = vec[x + y * x_size];
}
mat->last_x = mat->last_x_mod = 0;
mat->last_y = mat->last_y_mod = 0;
mat->index = 0;
mat->i_own = 1;
if (is_po2(mat->x_size))
mat->fast_mask = mat->x_size - 1;
else
mat->fast_mask = 0;
}