2 * Processor architecture specification.
3 * @author Sebastian Hack
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)
36 memset(env, 0, sizeof(*env));
37 env->isa = isa_if->init(file_handle);
41 arch_env_t *arch_env_push_irn_handler(arch_env_t *env,
42 const arch_irn_handler_t *handler)
44 assert(env->handlers_tos <= ARCH_MAX_HANDLERS);
45 env->handlers[env->handlers_tos++] = handler;
49 const arch_irn_handler_t *arch_env_pop_irn_handler(arch_env_t *env)
51 assert(env->handlers_tos > 0 && env->handlers_tos <= ARCH_MAX_HANDLERS);
52 return env->handlers[--env->handlers_tos];
55 static const arch_irn_ops_t *fallback_irn_ops = NULL;
57 int arch_register_class_put(const arch_register_class_t *cls, bitset_t *bs)
61 for(i = 0, n = cls->n_regs; i < n; ++i)
69 * Get the isa responsible for a node.
70 * @param env The arch environment with the isa stack.
71 * @param irn The node to get the responsible isa for.
72 * @return The irn operations given by the responsible isa.
74 static INLINE const arch_irn_ops_t *
75 get_irn_ops(const arch_env_t *env, const ir_node *irn)
79 for(i = env->handlers_tos - 1; i >= 0; --i) {
80 const arch_irn_handler_t *handler = env->handlers[i];
81 const arch_irn_ops_t *ops = handler->get_irn_ops(handler, irn);
87 return fallback_irn_ops;
90 const arch_register_req_t *arch_get_register_req(const arch_env_t *env,
91 arch_register_req_t *req, const ir_node *irn, int pos)
93 const arch_irn_ops_t *ops = get_irn_ops(env, irn);
94 req->type = arch_register_req_type_none;
95 return ops->impl->get_irn_reg_req(ops, req, irn, pos);
98 void arch_set_frame_offset(const arch_env_t *env, ir_node *irn, int offset)
100 const arch_irn_ops_t *ops = get_irn_ops(env, irn);
101 ops->impl->set_frame_offset(ops, irn, offset);
104 entity *arch_get_frame_entity(const arch_env_t *env, ir_node *irn)
106 const arch_irn_ops_t *ops = get_irn_ops(env, irn);
107 return ops->impl->get_frame_entity(ops, irn);
111 int arch_get_allocatable_regs(const arch_env_t *env, const ir_node *irn, int pos, bitset_t *bs)
113 arch_register_req_t local_req;
114 const arch_irn_ops_t *ops = get_irn_ops(env, irn);
115 const arch_register_req_t *req = ops->impl->get_irn_reg_req(ops, &local_req, irn, pos);
117 if(req->type == arch_register_req_type_none) {
118 bitset_clear_all(bs);
122 if(arch_register_req_is(req, limited)) {
123 req->limited(req->limited_env, bs);
124 return bitset_popcnt(bs);
127 arch_register_class_put(req->cls, bs);
128 return req->cls->n_regs;
131 void arch_put_non_ignore_regs(const arch_env_t *env, const arch_register_class_t *cls, bitset_t *bs)
135 for(i = 0; i < cls->n_regs; ++i) {
136 if(!arch_register_type_is(&cls->regs[i], ignore))
141 int arch_is_register_operand(const arch_env_t *env,
142 const ir_node *irn, int pos)
144 arch_register_req_t local_req;
145 const arch_irn_ops_t *ops = get_irn_ops(env, irn);
146 const arch_register_req_t *req = ops->impl->get_irn_reg_req(ops, &local_req, irn, pos);
150 int arch_reg_is_allocatable(const arch_env_t *env, const ir_node *irn,
151 int pos, const arch_register_t *reg)
153 arch_register_req_t req;
155 arch_get_register_req(env, &req, irn, pos);
157 if(req.type == arch_register_req_type_none)
160 if(arch_register_req_is(&req, limited)) {
161 bitset_t *bs = bitset_alloca(req.cls->n_regs);
162 req.limited(req.limited_env, bs);
163 return bitset_is_set(bs, arch_register_get_index(reg));
166 return req.cls == reg->reg_class;
169 const arch_register_class_t *
170 arch_get_irn_reg_class(const arch_env_t *env, const ir_node *irn, int pos)
172 arch_register_req_t local_req;
173 const arch_irn_ops_t *ops = get_irn_ops(env, irn);
174 const arch_register_req_t *req = ops->impl->get_irn_reg_req(ops, &local_req, irn, pos);
175 return req ? req->cls : NULL;
178 extern const arch_register_t *
179 arch_get_irn_register(const arch_env_t *env, const ir_node *irn)
181 const arch_irn_ops_t *ops = get_irn_ops(env, irn);
182 return ops->impl->get_irn_reg(ops, irn);
185 extern void arch_set_irn_register(const arch_env_t *env,
186 ir_node *irn, const arch_register_t *reg)
188 const arch_irn_ops_t *ops = get_irn_ops(env, irn);
189 ops->impl->set_irn_reg(ops, irn, reg);
192 extern arch_irn_class_t arch_irn_classify(const arch_env_t *env, const ir_node *irn)
194 const arch_irn_ops_t *ops = get_irn_ops(env, irn);
195 return ops->impl->classify(ops, irn);
198 extern arch_irn_flags_t arch_irn_get_flags(const arch_env_t *env, const ir_node *irn)
200 const arch_irn_ops_t *ops = get_irn_ops(env, irn);
201 return ops->impl->get_flags(ops, irn);
204 extern const char *arch_irn_flag_str(arch_irn_flags_t fl)
207 #define XXX(x) case arch_irn_flags_ ## x: return #x;
210 XXX(rematerializable);
217 extern char *arch_register_req_format(char *buf, size_t len, const arch_register_req_t *req)
220 snprintf(buf, len, "class: %s", req->cls->name);
222 if(arch_register_req_is(req, limited)) {
224 bitset_t *bs = bitset_alloca(req->cls->n_regs);
225 req->limited(req->limited_env, bs);
226 strncat(buf, " limited:", len);
227 bitset_foreach(bs, elm) {
228 strncat(buf, " ", len);
229 strncat(buf, req->cls->regs[elm].name, len);
233 if(arch_register_req_is(req, should_be_same)) {
234 ir_snprintf(tmp, sizeof(tmp), " same to: %+F", req->other_different);
235 strncat(buf, tmp, len);
238 if(arch_register_req_is(req, should_be_different)) {
239 ir_snprintf(tmp, sizeof(tmp), " different to: %+F", req->other_different);
240 strncat(buf, tmp, len);