2 * Processor architecture specification.
3 * @author Sebastian Hack
30 arch_env_t *arch_env_init(arch_env_t *env, const arch_isa_if_t *isa_if)
32 memset(env, 0, sizeof(*env));
33 env->isa = isa_if->init();
37 arch_env_t *arch_env_push_irn_handler(arch_env_t *env,
38 const arch_irn_handler_t *handler)
40 assert(env->handlers_tos <= ARCH_MAX_HANDLERS);
41 env->handlers[env->handlers_tos++] = handler;
45 const arch_irn_handler_t *arch_env_pop_irn_handler(arch_env_t *env)
47 assert(env->handlers_tos > 0 && env->handlers_tos <= ARCH_MAX_HANDLERS);
48 return env->handlers[--env->handlers_tos];
51 static const arch_irn_ops_t *fallback_irn_ops = NULL;
53 int arch_register_class_put(const arch_register_class_t *cls, bitset_t *bs)
57 for(i = 0, n = cls->n_regs; i < n; ++i)
65 * Get the isa responsible for a node.
66 * @param env The arch environment with the isa stack.
67 * @param irn The node to get the responsible isa for.
68 * @return The irn operations given by the responsible isa.
70 static INLINE const arch_irn_ops_t *
71 get_irn_ops(const arch_env_t *env, const ir_node *irn)
75 for(i = env->handlers_tos - 1; i >= 0; --i) {
76 const arch_irn_handler_t *handler = env->handlers[i];
77 const arch_irn_ops_t *ops = handler->get_irn_ops(handler, irn);
83 return fallback_irn_ops;
86 const arch_register_req_t *arch_get_register_req(const arch_env_t *env,
87 arch_register_req_t *req, const ir_node *irn, int pos)
89 const arch_irn_ops_t *ops = get_irn_ops(env, irn);
90 req->type = arch_register_req_type_none;
91 return ops->impl->get_irn_reg_req(ops, req, irn, pos);
94 void arch_set_frame_offset(const arch_env_t *env, ir_node *irn, int offset)
96 const arch_irn_ops_t *ops = get_irn_ops(env, irn);
97 ops->impl->set_frame_offset(ops, irn, offset);
100 entity *arch_get_frame_entity(const arch_env_t *env, ir_node *irn)
102 const arch_irn_ops_t *ops = get_irn_ops(env, irn);
103 return ops->impl->get_frame_entity(ops, irn);
107 int arch_get_allocatable_regs(const arch_env_t *env, const ir_node *irn, int pos, bitset_t *bs)
109 arch_register_req_t local_req;
110 const arch_irn_ops_t *ops = get_irn_ops(env, irn);
111 const arch_register_req_t *req = ops->impl->get_irn_reg_req(ops, &local_req, irn, pos);
113 if(req->type == arch_register_req_type_none) {
114 bitset_clear_all(bs);
118 if(arch_register_req_is(req, limited)) {
119 req->limited(req->limited_env, bs);
120 return bitset_popcnt(bs);
123 arch_register_class_put(req->cls, bs);
124 return req->cls->n_regs;
127 void arch_put_non_ignore_regs(const arch_env_t *env, const arch_register_class_t *cls, bitset_t *bs)
131 for(i = 0; i < cls->n_regs; ++i) {
132 if(!arch_register_type_is(&cls->regs[i], ignore))
137 int arch_is_register_operand(const arch_env_t *env,
138 const ir_node *irn, int pos)
140 arch_register_req_t local_req;
141 const arch_irn_ops_t *ops = get_irn_ops(env, irn);
142 const arch_register_req_t *req = ops->impl->get_irn_reg_req(ops, &local_req, irn, pos);
146 int arch_reg_is_allocatable(const arch_env_t *env, const ir_node *irn,
147 int pos, const arch_register_t *reg)
149 arch_register_req_t req;
151 arch_get_register_req(env, &req, irn, pos);
153 if(req.type == arch_register_req_type_none)
156 if(arch_register_req_is(&req, limited)) {
157 bitset_t *bs = bitset_alloca(req.cls->n_regs);
158 req.limited(req.limited_env, bs);
159 return bitset_is_set(bs, arch_register_get_index(reg));
162 return req.cls == reg->reg_class;
165 const arch_register_class_t *
166 arch_get_irn_reg_class(const arch_env_t *env, const ir_node *irn, int pos)
168 arch_register_req_t local_req;
169 const arch_irn_ops_t *ops = get_irn_ops(env, irn);
170 const arch_register_req_t *req = ops->impl->get_irn_reg_req(ops, &local_req, irn, pos);
171 return req ? req->cls : NULL;
174 extern const arch_register_t *
175 arch_get_irn_register(const arch_env_t *env, const ir_node *irn)
177 const arch_irn_ops_t *ops = get_irn_ops(env, irn);
178 return ops->impl->get_irn_reg(ops, irn);
181 extern void arch_set_irn_register(const arch_env_t *env,
182 ir_node *irn, const arch_register_t *reg)
184 const arch_irn_ops_t *ops = get_irn_ops(env, irn);
185 ops->impl->set_irn_reg(ops, irn, reg);
188 extern arch_irn_class_t arch_irn_classify(const arch_env_t *env, const ir_node *irn)
190 const arch_irn_ops_t *ops = get_irn_ops(env, irn);
191 return ops->impl->classify(ops, irn);
194 extern arch_irn_flags_t arch_irn_get_flags(const arch_env_t *env, const ir_node *irn)
196 const arch_irn_ops_t *ops = get_irn_ops(env, irn);
197 return ops->impl->get_flags(ops, irn);
200 extern const char *arch_irn_flag_str(arch_irn_flags_t fl)
203 #define XXX(x) case arch_irn_flags_ ## x: return #x;
206 XXX(rematerializable);
213 extern char *arch_register_req_format(char *buf, size_t len, const arch_register_req_t *req)
216 snprintf(buf, len, "class: %s", req->cls->name);
218 if(arch_register_req_is(req, limited)) {
220 bitset_t *bs = bitset_alloca(req->cls->n_regs);
221 req->limited(req->limited_env, bs);
222 strncat(buf, " limited:", len);
223 bitset_foreach(bs, elm) {
224 strncat(buf, " ", len);
225 strncat(buf, req->cls->regs[elm].name, len);
229 if(arch_register_req_is(req, should_be_same)) {
230 ir_snprintf(tmp, sizeof(tmp), " same to: %+F", req->other_different);
231 strncat(buf, tmp, len);
234 if(arch_register_req_is(req, should_be_different)) {
235 ir_snprintf(tmp, sizeof(tmp), " different to: %+F", req->other_different);
236 strncat(buf, tmp, len);