X-Git-Url: http://nsz.repo.hu/git/?a=blobdiff_plain;f=ir%2Fbe%2FTEMPLATE%2FTEMPLATE_emitter.c;h=cd9a013a525e99e43a29c75e43cc01fcca12c677;hb=0ac0b440ce2d239c5e7e7db56b8273559d9a7741;hp=61d6465b19a3e22a9e0f193a807a61a46b3ef9a9;hpb=2adf84106c02caf097c2d6cf1764706bdc437bcc;p=libfirm

diff --git a/ir/be/TEMPLATE/TEMPLATE_emitter.c b/ir/be/TEMPLATE/TEMPLATE_emitter.c
index 61d6465b1..cd9a013a5 100644
--- a/ir/be/TEMPLATE/TEMPLATE_emitter.c
+++ b/ir/be/TEMPLATE/TEMPLATE_emitter.c
@@ -1,11 +1,17 @@
-/* TEMPLATE emitter */
-/* $Id$ */
-#ifdef HAVE_CONFIG_H
+/*
+ * This file is part of libFirm.
+ * Copyright (C) 2012 University of Karlsruhe.
+ */
+
+/**
+ * @file
+ * @brief   emit assembler for a backend graph
+ */
 #include "config.h"
-#endif
 
 #include <limits.h>
 
+#include "error.h"
 #include "xmalloc.h"
 #include "tv.h"
 #include "iredges.h"
@@ -16,232 +22,233 @@
 #include "irargs_t.h"
 #include "irprog.h"
 
-#include "../besched.h"
+#include "besched.h"
+#include "begnuas.h"
+#include "beblocksched.h"
+#include "benode.h"
 
 #include "TEMPLATE_emitter.h"
 #include "gen_TEMPLATE_emitter.h"
+#include "gen_TEMPLATE_regalloc_if.h"
 #include "TEMPLATE_nodes_attr.h"
 #include "TEMPLATE_new_nodes.h"
-#include "TEMPLATE_map_regs.h"
-
-#define SNPRINTF_BUF_LEN 128
 
-/**
- * Returns the register at in position pos.
- */
-static const arch_register_t *get_in_reg(const arch_env_t *arch_env,
-                                         const ir_node *node, int pos)
+static void TEMPLATE_emit_immediate(const ir_node *node)
 {
-	ir_node                *op;
-	const arch_register_t  *reg = NULL;
-
-	assert(get_irn_arity(node) > pos && "Invalid IN position");
+	const TEMPLATE_attr_t *attr = get_TEMPLATE_attr_const(node);
+	be_emit_irprintf("%T", attr->value);
+}
 
-	/* The out register of the operator at position pos is the
-	   in register we need. */
-	op = get_irn_n(node, pos);
+static void emit_register(const arch_register_t *reg)
+{
+	be_emit_string(reg->name);
+}
 
-	reg = arch_get_irn_register(arch_env, op);
+static void TEMPLATE_emit_source_register(const ir_node *node, int pos)
+{
+	const arch_register_t *reg = arch_get_irn_register_in(node, pos);
+	emit_register(reg);
+}
 
-	assert(reg && "no in register found");
-	return reg;
+static void TEMPLATE_emit_dest_register(const ir_node *node, int pos)
+{
+	const arch_register_t *reg = arch_get_irn_register_out(node, pos);
+	emit_register(reg);
 }
 
 /**
- * Returns the register at out position pos.
+ * Returns the target label for a control flow node.
  */
-static const arch_register_t *get_out_reg(const arch_env_t *arch_env,
-                                          const ir_node *node, int pos)
+static void TEMPLATE_emit_cfop_target(const ir_node *node)
+{
+	ir_node *block = (ir_node*)get_irn_link(node);
+	be_gas_emit_block_name(block);
+}
+
+void TEMPLATE_emitf(const ir_node *node, const char *format, ...)
 {
-	ir_node                *proj;
-	const arch_register_t  *reg = NULL;
-
-	/* 1st case: irn is not of mode_T, so it has only                 */
-	/*           one OUT register -> good                             */
-	/* 2nd case: irn is of mode_T -> collect all Projs and ask the    */
-	/*           Proj with the corresponding projnum for the register */
-
-	if (get_irn_mode(node) != mode_T) {
-		reg = arch_get_irn_register(arch_env, node);
-	} else if (is_TEMPLATE_irn(node)) {
-		reg = get_TEMPLATE_out_reg(node, pos);
-	} else {
-		const ir_edge_t *edge;
-
-		foreach_out_edge(node, edge) {
-			proj = get_edge_src_irn(edge);
-			assert(is_Proj(proj) && "non-Proj from mode_T node");
-			if (get_Proj_proj(proj) == pos) {
-				reg = arch_get_irn_register(arch_env, proj);
-				break;
-			}
+	va_list ap;
+	va_start(ap, format);
+	be_emit_char('\t');
+	for (;;) {
+		const char *start = format;
+		while (*format != '%' && *format != '\0')
+			++format;
+		be_emit_string_len(start, format-start);
+		if (*format == '\0')
+			break;
+		++format;
+
+		switch (*format++) {
+		case '%':
+			be_emit_char('%');
+			break;
+
+		case 'S': {
+			if (*format < '0' || '9' <= *format)
+				goto unknown;
+			unsigned const pos = *format++ - '0';
+			TEMPLATE_emit_source_register(node, pos);
+			break;
+		}
+
+		case 'D': {
+			if (*format < '0' || '9' <= *format)
+				goto unknown;
+			unsigned const pos = *format++ - '0';
+			TEMPLATE_emit_dest_register(node, pos);
+			break;
+		}
+
+		case 'I':
+			TEMPLATE_emit_immediate(node);
+			break;
+
+		case 'X': {
+			int num = va_arg(ap, int);
+			be_emit_irprintf("%X", num);
+			break;
+		}
+
+		case 'u': {
+			unsigned num = va_arg(ap, unsigned);
+			be_emit_irprintf("%u", num);
+			break;
+		}
+
+		case 'd': {
+			int num = va_arg(ap, int);
+			be_emit_irprintf("%d", num);
+			break;
+		}
+
+		case 's': {
+			const char *string = va_arg(ap, const char *);
+			be_emit_string(string);
+			break;
+		}
+
+		case 'L': {
+			TEMPLATE_emit_cfop_target(node);
+			break;
+		}
+
+		case '\n':
+			be_emit_char('\n');
+			be_emit_write_line();
+			be_emit_char('\t');
+			break;
+
+		default:
+unknown:
+			panic("unknown format conversion");
 		}
 	}
+	va_end(ap);
+	be_emit_finish_line_gas(node);
 
-	assert(reg && "no out register found");
-	return reg;
 }
 
-/*************************************************************
- *             _       _    __   _          _
- *            (_)     | |  / _| | |        | |
- *  _ __  _ __ _ _ __ | |_| |_  | |__   ___| |_ __   ___ _ __
- * | '_ \| '__| | '_ \| __|  _| | '_ \ / _ \ | '_ \ / _ \ '__|
- * | |_) | |  | | | | | |_| |   | | | |  __/ | |_) |  __/ |
- * | .__/|_|  |_|_| |_|\__|_|   |_| |_|\___|_| .__/ \___|_|
- * | |                                       | |
- * |_|                                       |_|
- *************************************************************/
-
-void TEMPLATE_emit_immediate(TEMPLATE_emit_env_t *env, const ir_node *node)
+/**
+ * Emits code for a unconditional jump.
+ */
+static void emit_TEMPLATE_Jmp(const ir_node *node)
 {
-	/* TODO */
+	TEMPLATE_emitf(node, "jmp %L");
 }
 
-void TEMPLATE_emit_source_register(TEMPLATE_emit_env_t *env, const ir_node *node, int pos)
+static void emit_be_IncSP(const ir_node *node)
 {
-	const arch_register_t *reg = get_in_reg(env->arch_env, node, pos);
-	be_emit_string(env->emit, arch_register_get_name(reg));
+	int offset = be_get_IncSP_offset(node);
+
+	if (offset == 0)
+		return;
+
+	/* downwards growing stack */
+	const char *op = "add";
+	if (offset < 0) {
+		op = "sub";
+		offset = -offset;
+	}
+
+	TEMPLATE_emitf(node, "%s %S0, %d, %D0", op, offset);
 }
 
-void TEMPLATE_emit_dest_register(TEMPLATE_emit_env_t *env, const ir_node *node, int pos)
+static void emit_be_Start(const ir_node *node)
 {
-	const arch_register_t *reg = get_out_reg(env->arch_env, node, pos);
-	be_emit_string(env->emit, arch_register_get_name(reg));
-}
+	ir_graph *irg        = get_irn_irg(node);
+	ir_type  *frame_type = get_irg_frame_type(irg);
+	unsigned  size       = get_type_size_bytes(frame_type);
 
-/**
- * Returns the target label for a control flow node.
- */
-static void TEMPLATE_emit_cfop_target(TEMPLATE_emit_env_t *env, const ir_node *node) {
-	ir_node *block = get_irn_link(node);
+	/* emit function prolog */
 
-	be_emit_irprintf(env->emit, "BLOCK_%ld", get_irn_node_nr(block));
+	/* allocate stackframe */
+	if (size > 0) {
+		TEMPLATE_emitf(node, "sub %%sp, %u, %%sp", size);
+	}
 }
 
-/***********************************************************************************
- *                  _          __                                             _
- *                 (_)        / _|                                           | |
- *  _ __ ___   __ _ _ _ __   | |_ _ __ __ _ _ __ ___   _____      _____  _ __| | __
- * | '_ ` _ \ / _` | | '_ \  |  _| '__/ _` | '_ ` _ \ / _ \ \ /\ / / _ \| '__| |/ /
- * | | | | | | (_| | | | | | | | | | | (_| | | | | | |  __/\ V  V / (_) | |  |   <
- * |_| |_| |_|\__,_|_|_| |_| |_| |_|  \__,_|_| |_| |_|\___| \_/\_/ \___/|_|  |_|\_\
- *
- ***********************************************************************************/
+static void emit_be_Return(const ir_node *node)
+{
+	ir_graph *irg        = get_irn_irg(node);
+	ir_type  *frame_type = get_irg_frame_type(irg);
+	unsigned  size       = get_type_size_bytes(frame_type);
 
-/**
- * Emits code for a unconditional jump.
- */
-static void emit_Jmp(TEMPLATE_emit_env_t *env, const ir_node *node) {
-	ir_node *block;
+	/* emit function epilog here */
 
-	/* for now, the code works for scheduled and non-schedules blocks */
-	block = get_nodes_block(node);
+	/* deallocate stackframe */
+	if (size > 0) {
+		TEMPLATE_emitf(node, "add %%sp, %u, %%sp", size);
+	}
 
-	be_emit_cstring(env->emit, "\tjmp ");
-	TEMPLATE_emit_cfop_target(env, node);
-	be_emit_finish_line_gas(env->emit, node);
+	/* return */
+	TEMPLATE_emitf(node, "ret");
 }
 
 /**
  * Enters the emitter functions for handled nodes into the generic
  * pointer of an opcode.
  */
-static void TEMPLATE_register_emitters(void) {
-
-/* some convienience macros to register additional emitter functions
-   (other than the generated ones) */
-#define TEMPLATE_EMIT(a) op_TEMPLATE_##a->ops.generic = (op_func)emit_TEMPLATE_##a
-#define EMIT(a)          op_##a->ops.generic = (op_func)emit_##a
-#define BE_EMIT(a)       op_be_##a->ops.generic = (op_func)emit_be_##a
-
+static void TEMPLATE_register_emitters(void)
+{
 	/* first clear the generic function pointer for all ops */
-	clear_irp_opcodes_generic_func();
+	ir_clear_opcodes_generic_func();
 
 	/* register all emitter functions defined in spec */
 	TEMPLATE_register_spec_emitters();
 
-	/* register addtional emitter functions if needed */
-	EMIT(Jmp);
-
-#undef TEMPLATE_EMIT
-#undef BE_EMIT
-#undef EMIT
-}
-
-typedef void (*emit_func_ptr) (TEMPLATE_emit_env_t *, const ir_node *);
+	/* custom emitters not provided by the spec */
+	be_set_emitter(op_TEMPLATE_Jmp, emit_TEMPLATE_Jmp);
+	be_set_emitter(op_be_IncSP,     emit_be_IncSP);
+	be_set_emitter(op_be_Return,    emit_be_Return);
+	be_set_emitter(op_be_Start,     emit_be_Start);
 
-/**
- * Emits code for a node.
- */
-void TEMPLATE_emit_node(TEMPLATE_emit_env_t *env, const ir_node *node) {
-	ir_op               *op       = get_irn_op(node);
-	DEBUG_ONLY(firm_dbg_module_t *mod = env->mod;)
-
-	DBG((mod, LEVEL_1, "emitting code for %+F\n", node));
-
-	if (op->ops.generic) {
-		emit_func_ptr func = (emit_func_ptr) op->ops.generic;
-		(*func) (env, node);
-	} else {
-		ir_fprintf(stderr, "No emitter for node %+F\n", node);
-	}
+	/* no need to emit anything for the following nodes */
+	be_set_emitter(op_Phi,     be_emit_nothing);
+	be_set_emitter(op_be_Keep, be_emit_nothing);
 }
 
 /**
  * Walks over the nodes in a block connected by scheduling edges
  * and emits code for each node.
  */
-void TEMPLATE_gen_block(ir_node *block, void *data) {
-	TEMPLATE_emit_env_t *env = data;
-	ir_node *node;
-
-	if (! is_Block(block))
-		return;
-
-	be_emit_cstring(env->emit, "BLOCK_");
-	be_emit_irprintf(env->emit, "%ld:\n", get_irn_node_nr(block));
-	be_emit_write_line(env->emit);
+static void TEMPLATE_emit_block(ir_node *block)
+{
+	be_gas_begin_block(block, true);
 
 	sched_foreach(block, node) {
-		TEMPLATE_emit_node(env, node);
+		be_emit_node(node);
 	}
 }
 
-
-/**
- * Emits code for function start.
- */
-void TEMPLATE_emit_func_prolog(TEMPLATE_emit_env_t *env, ir_graph *irg) {
-	const char *irg_name = get_entity_name(get_irg_entity(irg));
-
-	/* TODO: emit function header */
-	be_emit_cstring(env->emit, "/* start of ");
-	be_emit_string(env->emit, irg_name);
-	be_emit_cstring(env->emit, " */\n");
-	be_emit_write_line(env->emit);
-}
-
-/**
- * Emits code for function end
- */
-void TEMPLATE_emit_func_epilog(TEMPLATE_emit_env_t *env, ir_graph *irg) {
-	const char *irg_name = get_entity_name(get_irg_entity(irg));
-
-	/* TODO: emit function end */
-	be_emit_cstring(env->emit, "/* end of ");
-	be_emit_string(env->emit, irg_name);
-	be_emit_cstring(env->emit, " */\n");
-	be_emit_write_line(env->emit);
-}
-
 /**
  * Sets labels for control flow nodes (jump target)
- * TODO: Jump optimization
  */
-void TEMPLATE_gen_labels(ir_node *block, void *env) {
+static void TEMPLATE_gen_labels(ir_node *block, void *env)
+{
 	ir_node *pred;
 	int n = get_Block_n_cfgpreds(block);
+	(void) env;
 
 	for (n--; n >= 0; n--) {
 		pred = get_Block_cfgpred(block, n);
@@ -252,20 +259,29 @@ void TEMPLATE_gen_labels(ir_node *block, void *env) {
 /**
  * Main driver
  */
-void TEMPLATE_gen_routine(const TEMPLATE_code_gen_t *cg, ir_graph *irg) {
-	TEMPLATE_emit_env_t env;
-
-	env.isa      = (TEMPLATE_isa_t *) cg->arch_env->isa;
-	env.emit     = &env.isa->emit;
-	env.arch_env = cg->arch_env;
-	env.cg       = cg;
-	FIRM_DBG_REGISTER(env.mod, "firm.be.TEMPLATE.emit");
+void TEMPLATE_emit_routine(ir_graph *irg)
+{
+	ir_node   **block_schedule;
+	ir_entity  *entity = get_irg_entity(irg);
+	size_t      i;
+	size_t      n;
 
 	/* register all emitter functions */
 	TEMPLATE_register_emitters();
 
-	TEMPLATE_emit_func_prolog(&env, irg);
-	irg_block_walk_graph(irg, TEMPLATE_gen_labels, NULL, &env);
-	irg_walk_blkwise_graph(irg, NULL, TEMPLATE_gen_block, &env);
-	TEMPLATE_emit_func_epilog(&env, irg);
+	/* create the block schedule */
+	block_schedule = be_create_block_schedule(irg);
+
+	/* emit assembler prolog */
+	be_gas_emit_function_prolog(entity, 4, NULL);
+
+	/* populate jump link fields with their destinations */
+	irg_block_walk_graph(irg, TEMPLATE_gen_labels, NULL, NULL);
+
+	n = ARR_LEN(block_schedule);
+	for (i = 0; i < n; ++i) {
+		ir_node *block = block_schedule[i];
+		TEMPLATE_emit_block(block);
+	}
+	be_gas_emit_function_epilog(entity);
 }