2 * Processor architecture specification.
3 * @author Sebastian Hack
29 #include "raw_bitset.h"
33 /* Initialize the architecture environment struct. */
34 arch_env_t *arch_env_init(arch_env_t *env, const arch_isa_if_t *isa_if, FILE *file_handle, be_main_env_t *main_env)
36 memset(env, 0, sizeof(*env));
37 env->isa = isa_if->init(file_handle);
38 env->isa->main_env = main_env;
42 arch_env_t *arch_env_push_irn_handler(arch_env_t *env,
43 const arch_irn_handler_t *handler)
45 assert(env->handlers_tos < ARCH_MAX_HANDLERS);
46 env->handlers[env->handlers_tos++] = handler;
50 const arch_irn_handler_t *arch_env_pop_irn_handler(arch_env_t *env)
52 assert(env->handlers_tos > 0 && env->handlers_tos <= ARCH_MAX_HANDLERS);
53 return env->handlers[--env->handlers_tos];
56 static const arch_irn_ops_t *fallback_irn_ops = NULL;
58 int arch_register_class_put(const arch_register_class_t *cls, bitset_t *bs)
62 for(i = 0, n = cls->n_regs; i < n; ++i)
70 * Get the isa responsible for a node.
71 * @param env The arch environment with the isa stack.
72 * @param irn The node to get the responsible isa for.
73 * @return The irn operations given by the responsible isa.
75 static INLINE const arch_irn_ops_t *
76 get_irn_ops(const arch_env_t *env, const ir_node *irn)
80 for(i = env->handlers_tos - 1; i >= 0; --i) {
81 const arch_irn_handler_t *handler = env->handlers[i];
82 const arch_irn_ops_t *ops = handler->get_irn_ops(handler, irn);
88 return fallback_irn_ops;
91 const arch_irn_ops_t *arch_get_irn_ops(const arch_env_t *env, const ir_node *irn) {
92 return get_irn_ops(env, irn);
95 const arch_register_req_t *arch_get_register_req(const arch_env_t *env,
96 const ir_node *irn, int pos)
98 const arch_irn_ops_t *ops = get_irn_ops(env, irn);
99 return ops->impl->get_irn_reg_req(ops, irn, pos);
102 void arch_set_frame_offset(const arch_env_t *env, ir_node *irn, int offset)
104 const arch_irn_ops_t *ops = get_irn_ops(env, irn);
105 ops->impl->set_frame_offset(ops, irn, offset);
108 ir_entity *arch_get_frame_entity(const arch_env_t *env, ir_node *irn)
110 const arch_irn_ops_t *ops = get_irn_ops(env, irn);
111 return ops->impl->get_frame_entity(ops, irn);
114 void arch_set_frame_entity(const arch_env_t *env, ir_node *irn, ir_entity *ent)
116 const arch_irn_ops_t *ops = get_irn_ops(env, irn);
117 ops->impl->set_frame_entity(ops, irn, ent);
120 int arch_get_sp_bias(const arch_env_t *env, ir_node *irn)
122 const arch_irn_ops_t *ops = get_irn_ops(env, irn);
123 return ops->impl->get_sp_bias(ops, irn);
126 arch_inverse_t *arch_get_inverse(const arch_env_t *env, const ir_node *irn, int i, arch_inverse_t *inverse, struct obstack *obstack)
128 const arch_irn_ops_t *ops = get_irn_ops(env, irn);
130 if(ops->impl->get_inverse) {
131 return ops->impl->get_inverse(ops, irn, i, inverse, obstack);
137 int arch_possible_memory_operand(const arch_env_t *env, const ir_node *irn, unsigned int i) {
138 const arch_irn_ops_t *ops = get_irn_ops(env, irn);
140 if(ops->impl->possible_memory_operand) {
141 return ops->impl->possible_memory_operand(ops, irn, i);
147 void arch_perform_memory_operand(const arch_env_t *env, ir_node *irn, ir_node *spill, unsigned int i) {
148 const arch_irn_ops_t *ops = get_irn_ops(env, irn);
150 if(ops->impl->perform_memory_operand) {
151 ops->impl->perform_memory_operand(ops, irn, spill, i);
157 int arch_get_op_estimated_cost(const arch_env_t *env, const ir_node *irn)
159 const arch_irn_ops_t *ops = get_irn_ops(env, irn);
161 if(ops->impl->get_op_estimated_cost) {
162 return ops->impl->get_op_estimated_cost(ops, irn);
168 int arch_is_possible_memory_operand(const arch_env_t *env, const ir_node *irn, int i)
170 const arch_irn_ops_t *ops = get_irn_ops(env, irn);
172 if(ops->impl->possible_memory_operand) {
173 return ops->impl->possible_memory_operand(ops, irn, i);
179 int arch_get_allocatable_regs(const arch_env_t *env, const ir_node *irn, int pos, bitset_t *bs)
181 const arch_irn_ops_t *ops = get_irn_ops(env, irn);
182 const arch_register_req_t *req = ops->impl->get_irn_reg_req(ops, irn, pos);
184 if(req->type == arch_register_req_type_none) {
185 bitset_clear_all(bs);
189 if(arch_register_req_is(req, limited)) {
190 rbitset_copy_to_bitset(req->limited, bs);
191 return bitset_popcnt(bs);
194 arch_register_class_put(req->cls, bs);
195 return req->cls->n_regs;
198 void arch_put_non_ignore_regs(const arch_env_t *env, const arch_register_class_t *cls, bitset_t *bs)
202 for(i = 0; i < cls->n_regs; ++i) {
203 if(!arch_register_type_is(&cls->regs[i], ignore))
208 int arch_count_non_ignore_regs(const arch_env_t *env, const arch_register_class_t *cls)
213 for(i = 0; i < cls->n_regs; ++i) {
214 if(!arch_register_type_is(&cls->regs[i], ignore))
221 int arch_is_register_operand(const arch_env_t *env,
222 const ir_node *irn, int pos)
224 const arch_irn_ops_t *ops = get_irn_ops(env, irn);
225 const arch_register_req_t *req = ops->impl->get_irn_reg_req(ops, irn, pos);
230 int arch_reg_is_allocatable(const arch_env_t *env, const ir_node *irn,
231 int pos, const arch_register_t *reg)
233 const arch_register_req_t *req;
235 req = arch_get_register_req(env, irn, pos);
237 if(req->type == arch_register_req_type_none)
240 if(arch_register_req_is(req, limited)) {
241 assert(arch_register_get_class(reg) == req->cls);
242 return rbitset_is_set(req->limited, arch_register_get_index(reg));
245 return req->cls == reg->reg_class;
248 const arch_register_class_t *
249 arch_get_irn_reg_class(const arch_env_t *env, const ir_node *irn, int pos)
251 const arch_irn_ops_t *ops = get_irn_ops(env, irn);
252 const arch_register_req_t *req = ops->impl->get_irn_reg_req(ops, irn, pos);
254 assert(req->type != arch_register_req_type_none || req->cls == NULL);
259 extern const arch_register_t *
260 arch_get_irn_register(const arch_env_t *env, const ir_node *irn)
262 const arch_irn_ops_t *ops = get_irn_ops(env, irn);
263 return ops->impl->get_irn_reg(ops, irn);
266 extern void arch_set_irn_register(const arch_env_t *env,
267 ir_node *irn, const arch_register_t *reg)
269 const arch_irn_ops_t *ops = get_irn_ops(env, irn);
270 ops->impl->set_irn_reg(ops, irn, reg);
273 extern arch_irn_class_t arch_irn_classify(const arch_env_t *env, const ir_node *irn)
275 const arch_irn_ops_t *ops = get_irn_ops(env, irn);
276 return ops->impl->classify(ops, irn);
279 extern arch_irn_flags_t arch_irn_get_flags(const arch_env_t *env, const ir_node *irn)
281 const arch_irn_ops_t *ops = get_irn_ops(env, irn);
282 return ops->impl->get_flags(ops, irn);
285 extern const char *arch_irn_flag_str(arch_irn_flags_t fl)
288 #define XXX(x) case arch_irn_flags_ ## x: return #x;
291 XXX(rematerializable);
299 extern char *arch_register_req_format(char *buf, size_t len,
300 const arch_register_req_t *req,
304 snprintf(buf, len, "class: %s", req->cls->name);
306 if(arch_register_req_is(req, limited)) {
307 unsigned n_regs = req->cls->n_regs;
310 strncat(buf, " limited:", len);
311 for(i = 0; i < n_regs; ++i) {
312 if(rbitset_is_set(req->limited, i)) {
313 const arch_register_t *reg = &req->cls->regs[i];
314 strncat(buf, " ", len);
315 strncat(buf, reg->name, len);
320 if(arch_register_req_is(req, should_be_same)) {
321 const ir_node *same = get_irn_n(node, req->other_same);
322 ir_snprintf(tmp, sizeof(tmp), " same to: %+F", same);
323 strncat(buf, tmp, len);
326 if(arch_register_req_is(req, should_be_different)) {
327 const ir_node *different = get_irn_n(node, req->other_different);
328 ir_snprintf(tmp, sizeof(tmp), " different to: %+F", different);
329 strncat(buf, tmp, len);
335 static const arch_register_req_t no_requirement = {
336 arch_register_req_type_none,
342 const arch_register_req_t *arch_no_register_req = &no_requirement;