static void sparc_sp_sim(ir_node *const node, stack_pointer_state_t *state)
{
sparc_determine_frameoffset(node, state->offset);
if (is_sparc_Save(node)) {
sparc_attr_t *const attr = get_sparc_attr(node);
if (get_irn_arity(node) == 3)
panic("no support for _reg variant yet");
/* Adjust for alignment */
assert(state->misalign == 0);
int const prev_offset = state->offset;
int const new_offset = prev_offset - state->align_padding
- attr->immediate_value;
int const aligned = round_up2(new_offset, 1u << state->p2align);
attr->immediate_value = -(aligned - prev_offset);
state->align_padding = aligned - new_offset;
state->offset = aligned;
} else if (is_sparc_SubSP(node) || is_sparc_AddSP(node)) {
state->align_padding = 0;
} else if (is_sparc_RestoreZero(node)) {
state->offset = 0;
state->align_padding = 0;
}
}
static void set_irn_sp_bias(ir_node *node, int new_bias)
{
if (be_is_IncSP(node)) {
be_set_IncSP_offset(node, new_bias);
} else if (is_sparc_Save(node)) {
sparc_attr_t *attr = get_sparc_attr(node);
attr->immediate_value = -new_bias;
} else if (is_sparc_Restore(node)) {
sparc_attr_t *attr = get_sparc_attr(node);
attr->immediate_value = new_bias;
}
}
static int sparc_get_sp_bias(const ir_node *node)
{
if (be_is_IncSP(node))
return be_get_IncSP_offset(node);
if (is_sparc_Save(node)) {
const sparc_attr_t *attr = get_sparc_attr_const(node);
if (get_irn_arity(node) == 3)
panic("no support for _reg variant yet");
return -attr->immediate_value;
}
if (is_sparc_RestoreZero(node))
return SP_BIAS_RESET;
return 0;
}
