19 #include "../besched.h"
21 #include "TEMPLATE_emitter.h"
22 #include "gen_TEMPLATE_emitter.h"
23 #include "TEMPLATE_nodes_attr.h"
24 #include "TEMPLATE_new_nodes.h"
25 #include "TEMPLATE_map_regs.h"
27 #define SNPRINTF_BUF_LEN 128
30 * Returns the register at in position pos.
32 static const arch_register_t *get_in_reg(const arch_env_t *arch_env,
33 const ir_node *node, int pos)
36 const arch_register_t *reg = NULL;
38 assert(get_irn_arity(node) > pos && "Invalid IN position");
40 /* The out register of the operator at position pos is the
41 in register we need. */
42 op = get_irn_n(node, pos);
44 reg = arch_get_irn_register(arch_env, op);
46 assert(reg && "no in register found");
51 * Returns the register at out position pos.
53 static const arch_register_t *get_out_reg(const arch_env_t *arch_env,
54 const ir_node *node, int pos)
57 const arch_register_t *reg = NULL;
59 /* 1st case: irn is not of mode_T, so it has only */
60 /* one OUT register -> good */
61 /* 2nd case: irn is of mode_T -> collect all Projs and ask the */
62 /* Proj with the corresponding projnum for the register */
64 if (get_irn_mode(node) != mode_T) {
65 reg = arch_get_irn_register(arch_env, node);
66 } else if (is_TEMPLATE_irn(node)) {
67 reg = get_TEMPLATE_out_reg(node, pos);
69 const ir_edge_t *edge;
71 foreach_out_edge(node, edge) {
72 proj = get_edge_src_irn(edge);
73 assert(is_Proj(proj) && "non-Proj from mode_T node");
74 if (get_Proj_proj(proj) == pos) {
75 reg = arch_get_irn_register(arch_env, proj);
81 assert(reg && "no out register found");
85 /*************************************************************
87 * (_) | | / _| | | | |
88 * _ __ _ __ _ _ __ | |_| |_ | |__ ___| |_ __ ___ _ __
89 * | '_ \| '__| | '_ \| __| _| | '_ \ / _ \ | '_ \ / _ \ '__|
90 * | |_) | | | | | | | |_| | | | | | __/ | |_) | __/ |
91 * | .__/|_| |_|_| |_|\__|_| |_| |_|\___|_| .__/ \___|_|
94 *************************************************************/
96 void TEMPLATE_emit_immediate(TEMPLATE_emit_env_t *env, const ir_node *node)
101 void TEMPLATE_emit_source_register(TEMPLATE_emit_env_t *env, const ir_node *node, int pos)
103 const arch_register_t *reg = get_in_reg(env->arch_env, node, pos);
104 be_emit_string(env->emit, arch_register_get_name(reg));
107 void TEMPLATE_emit_dest_register(TEMPLATE_emit_env_t *env, const ir_node *node, int pos)
109 const arch_register_t *reg = get_out_reg(env->arch_env, node, pos);
110 be_emit_string(env->emit, arch_register_get_name(reg));
114 * Returns the target label for a control flow node.
116 static void TEMPLATE_emit_cfop_target(TEMPLATE_emit_env_t *env, const ir_node *node) {
117 ir_node *block = get_irn_link(node);
119 be_emit_irprintf(env->emit, "BLOCK_%ld", get_irn_node_nr(block));
122 /***********************************************************************************
125 * _ __ ___ __ _ _ _ __ | |_ _ __ __ _ _ __ ___ _____ _____ _ __| | __
126 * | '_ ` _ \ / _` | | '_ \ | _| '__/ _` | '_ ` _ \ / _ \ \ /\ / / _ \| '__| |/ /
127 * | | | | | | (_| | | | | | | | | | | (_| | | | | | | __/\ V V / (_) | | | <
128 * |_| |_| |_|\__,_|_|_| |_| |_| |_| \__,_|_| |_| |_|\___| \_/\_/ \___/|_| |_|\_\
130 ***********************************************************************************/
133 * Emits code for a unconditional jump.
135 static void emit_Jmp(TEMPLATE_emit_env_t *env, const ir_node *node) {
138 /* for now, the code works for scheduled and non-schedules blocks */
139 block = get_nodes_block(node);
141 be_emit_cstring(env->emit, "\tjmp ");
142 TEMPLATE_emit_cfop_target(env, node);
143 be_emit_finish_line_gas(env->emit, node);
147 * Enters the emitter functions for handled nodes into the generic
148 * pointer of an opcode.
150 static void TEMPLATE_register_emitters(void) {
152 /* some convienience macros to register additional emitter functions
153 (other than the generated ones) */
154 #define TEMPLATE_EMIT(a) op_TEMPLATE_##a->ops.generic = (op_func)emit_TEMPLATE_##a
155 #define EMIT(a) op_##a->ops.generic = (op_func)emit_##a
156 #define BE_EMIT(a) op_be_##a->ops.generic = (op_func)emit_be_##a
158 /* first clear the generic function pointer for all ops */
159 clear_irp_opcodes_generic_func();
161 /* register all emitter functions defined in spec */
162 TEMPLATE_register_spec_emitters();
164 /* register addtional emitter functions if needed */
172 typedef void (*emit_func_ptr) (TEMPLATE_emit_env_t *, const ir_node *);
175 * Emits code for a node.
177 void TEMPLATE_emit_node(TEMPLATE_emit_env_t *env, const ir_node *node) {
178 ir_op *op = get_irn_op(node);
179 DEBUG_ONLY(firm_dbg_module_t *mod = env->mod;)
181 DBG((mod, LEVEL_1, "emitting code for %+F\n", node));
183 if (op->ops.generic) {
184 emit_func_ptr func = (emit_func_ptr) op->ops.generic;
187 ir_fprintf(stderr, "No emitter for node %+F\n", node);
192 * Walks over the nodes in a block connected by scheduling edges
193 * and emits code for each node.
195 void TEMPLATE_gen_block(ir_node *block, void *data) {
196 TEMPLATE_emit_env_t *env = data;
199 if (! is_Block(block))
202 be_emit_cstring(env->emit, "BLOCK_");
203 be_emit_irprintf(env->emit, "%ld:\n", get_irn_node_nr(block));
204 be_emit_write_line(env->emit);
206 sched_foreach(block, node) {
207 TEMPLATE_emit_node(env, node);
213 * Emits code for function start.
215 void TEMPLATE_emit_func_prolog(TEMPLATE_emit_env_t *env, ir_graph *irg) {
216 const char *irg_name = get_entity_name(get_irg_entity(irg));
218 /* TODO: emit function header */
219 be_emit_cstring(env->emit, "/* start of ");
220 be_emit_string(env->emit, irg_name);
221 be_emit_cstring(env->emit, " */\n");
222 be_emit_write_line(env->emit);
226 * Emits code for function end
228 void TEMPLATE_emit_func_epilog(TEMPLATE_emit_env_t *env, ir_graph *irg) {
229 const char *irg_name = get_entity_name(get_irg_entity(irg));
231 /* TODO: emit function end */
232 be_emit_cstring(env->emit, "/* end of ");
233 be_emit_string(env->emit, irg_name);
234 be_emit_cstring(env->emit, " */\n");
235 be_emit_write_line(env->emit);
239 * Sets labels for control flow nodes (jump target)
240 * TODO: Jump optimization
242 void TEMPLATE_gen_labels(ir_node *block, void *env) {
244 int n = get_Block_n_cfgpreds(block);
246 for (n--; n >= 0; n--) {
247 pred = get_Block_cfgpred(block, n);
248 set_irn_link(pred, block);
255 void TEMPLATE_gen_routine(const TEMPLATE_code_gen_t *cg, ir_graph *irg) {
256 TEMPLATE_emit_env_t env;
258 env.isa = (TEMPLATE_isa_t *) cg->arch_env->isa;
259 env.emit = &env.isa->emit;
260 env.arch_env = cg->arch_env;
262 FIRM_DBG_REGISTER(env.mod, "firm.be.TEMPLATE.emit");
264 /* register all emitter functions */
265 TEMPLATE_register_emitters();
267 TEMPLATE_emit_func_prolog(&env, irg);
268 irg_block_walk_graph(irg, TEMPLATE_gen_labels, NULL, &env);
269 irg_walk_blkwise_graph(irg, NULL, TEMPLATE_gen_block, &env);
270 TEMPLATE_emit_func_epilog(&env, irg);