add Linux grof support

[r19271]

ir/be/ia32/bearch_ia32.c

@@ -51,6 +51,7 @@
 #include "xmalloc.h"
 #include "irtools.h"
 #include "iroptimize.h"
+#include "instrument.h"
 
 #include "../beabi.h"
 #include "../beirg_t.h"
@@ -927,6 +928,10 @@ static ia32_irn_ops_t ia32_irn_ops = {
  *                       |___/
  **************************************************/
 
+static ir_entity *mcount = NULL;
+
+#define ID(s) new_id_from_chars(s, sizeof(s) - 1)
+
 static void ia32_before_abi(void *self) {
 	lower_mode_b_config_t lower_mode_b_config = {
 		mode_Iu,  /* lowered mode */
@@ -938,6 +943,16 @@ static void ia32_before_abi(void *self) {
 	ir_lower_mode_b(cg->irg, &lower_mode_b_config);
 	if (cg->dump)
 		be_dump(cg->irg, "-lower_modeb", dump_ir_block_graph_sched);
+	if (cg->gprof) {
+		if (mcount == NULL) {
+			ir_type *tp = new_type_method(ID("FKT.mcount"), 0, 0);
+			mcount = new_entity(get_glob_type(), ID("mcount"), tp);
+			/* FIXME: enter the right ld_ident here */
+			set_entity_ld_ident(mcount, get_entity_ident(mcount));
+			set_entity_visibility(mcount, visibility_external_allocated);
+		}
+		instrument_initcall(cg->irg, mcount);
+	}
 }
 
 /**

ir/ir/instrument.c

+/*
+ * Copyright (C) 1995-2008 University of Karlsruhe.  All right reserved.
+ *
+ * This file is part of libFirm.
+ *
+ * This file may be distributed and/or modified under the terms of the
+ * GNU General Public License version 2 as published by the Free Software
+ * Foundation and appearing in the file LICENSE.GPL included in the
+ * packaging of this file.
+ *
+ * Licensees holding valid libFirm Professional Edition licenses may use
+ * this file in accordance with the libFirm Commercial License.
+ * Agreement provided with the Software.
+ *
+ * This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
+ * WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE.
+ */
+
+/**
+ * @file
+ * @brief   Instrumentation of graphs.
+ * @date    14.4.2008
+ * @author  Michael Beck
+ * @version $Id: $
+ */
+#ifdef HAVE_CONFIG_H
+# include "config.h"
+#endif
+
+#include "irgraph_t.h"
+#include "iredges.h"
+#include "error.h"
+#include "ircons.h"
+#include "instrument.h"
+
+/**
+ * Adds a Call at the beginning of the given irg.
+ */
+void instrument_initcall(ir_graph *irg, ir_entity *ent) {
+	const ir_edge_t *edge;
+	ir_node         *initial_exec;
+	ir_node         *initial_mem;
+	ir_node         *start_block;
+	ir_node         *adr, *call, *new_mem;
+	ir_node         *first_block = NULL;
+	int             i, idx, need_new_block;
+	symconst_symbol sym;
+
+	edges_assure(irg);
+
+	/* find the first block */
+	initial_exec = get_irg_initial_exec(irg);
+	start_block  = get_irg_start_block(irg);
+
+	foreach_out_edge(initial_exec, edge) {
+		ir_node *succ = get_edge_src_irn(edge);
+
+		if (succ != start_block && is_Block(succ)) {
+			/* found the first block */
+			first_block = succ;
+			break;
+		}
+	}
+	if (first_block == NULL) {
+		panic("Cannot find first block of irg %+F\n", irg);
+	}
+
+	/* check if this block has only one predecessor */
+	idx = -1;
+	need_new_block = 0;
+	for (i = get_Block_n_cfgpreds(first_block) - 1; i >= 0; --i) {
+		ir_node *p = get_Block_cfgpred(first_block, i);
+
+		if (is_Bad(p))
+			continue;
+		if (p == initial_exec)
+			idx = i;
+		else
+			need_new_block = 1;
+	}
+
+	if (need_new_block) {
+		ir_node *blk = new_r_Block(irg, 1, &initial_exec);
+		set_Block_cfgpred(first_block, idx, new_r_Jmp(irg, blk));
+		first_block = blk;
+	}
+
+	/* place the call */
+	sym.entity_p = ent;
+	adr = new_r_SymConst(irg, start_block, mode_P_code, sym, symconst_addr_ent);
+
+	call    = new_r_Call(irg, first_block, get_irg_no_mem(irg), adr, 0, NULL, get_entity_type(ent));
+	new_mem = new_r_Proj(irg, first_block, call, mode_M, pn_Call_M_regular);
+
+	initial_mem = get_irg_initial_mem(irg);
+	edges_reroute(initial_mem, new_mem, irg);
+	/* beware: reroute routes anchor edges also, revert this */
+	set_irg_initial_mem(irg, initial_mem);
+	set_Call_mem(call, initial_mem);
+}

ir/ir/instrument.h

+/*
+ * Copyright (C) 1995-2008 University of Karlsruhe.  All right reserved.
+ *
+ * This file is part of libFirm.
+ *
+ * This file may be distributed and/or modified under the terms of the
+ * GNU General Public License version 2 as published by the Free Software
+ * Foundation and appearing in the file LICENSE.GPL included in the
+ * packaging of this file.
+ *
+ * Licensees holding valid libFirm Professional Edition licenses may use
+ * this file in accordance with the libFirm Commercial License.
+ * Agreement provided with the Software.
+ *
+ * This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
+ * WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE.
+ */
+
+/**
+ * @file
+ * @brief   Instrumentation of graphs.
+ * @version $Id: $
+ */
+#ifndef FIRM_IR_INSTRUMENT_H
+#define FIRM_IR_INSTRUMENT_H
+
+/**
+ * Adds a Call at the beginning of the given irg.
+ *
+ * @param irg  the graph to instrument
+ * @param ent  the entity to call
+ */
+void instrument_initcall(ir_graph *irg, ir_entity *ent);
+
+#endif