Attachment 22671 Details for Bug 46770 – A patch

[patch] A patch

gcc-pr46770-1.patch (text/plain), 6.32 KB, created by H.J. Lu on 2010-12-07 15:44:50 UTC

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Creator: H.J. Lu

Created: 2010-12-07 15:44:50 UTC

Size: 6.32 KB

patch

obsolete

>2010-12-07  H.J. Lu  <hongjiu.lu@intel.com>
>
>	PR target/46770
>	* config.gcc: Use initfini-array.o if supported.
>
>	* config/initfini-array.c: New.
>	* config/initfini-array.h: Likewise.
>	* config/t-initfini-array: Likewise.
>
>diff --git a/gcc/config.gcc b/gcc/config.gcc
>index dfbf2c5..12d2aae 100644
>--- a/gcc/config.gcc
>+++ b/gcc/config.gcc
>@@ -2698,6 +2698,7 @@ esac
> case ${target} in
> i[34567]86-*-linux* | x86_64-*-linux*)
> 	tmake_file="${tmake_file} i386/t-pmm_malloc i386/t-i386"
>+	use_initfini_array=yes
> 	;;
> i[34567]86-*-* | x86_64-*-*)
> 	tmake_file="${tmake_file} i386/t-gmm_malloc i386/t-i386"
>@@ -3050,6 +3051,16 @@ if test x$with_schedule = x; then
> 	esac
> fi
> 
>+# Support --enable-initfini-array.  Use initfini-array.h only if
>+# use_initfini_array is also set to yes.  Some platforms don't need it
>+# even if enable_initfini_array is yes.
>+if test x$enable_initfini_array$use_initfini_array = xyesyes; then
>+  tm_file="${tm_file} initfini-array.h"
>+  tmake_file="${tmake_file} t-initfini-array"
>+  extra_objs="$extra_objs initfini-array.o"
>+  target_gtfiles="$target_gtfiles \$(srcdir)/config/initfini-array.c"
>+fi
>+
> # Validate and mark as valid any --with options supported
> # by this target.  In order to use a particular --with option
> # you must list it in supported_defaults; validating the value
>diff --git a/gcc/config/initfini-array.c b/gcc/config/initfini-array.c
>new file mode 100644
>index 0000000..d5fd40f
>--- /dev/null
>+++ b/gcc/config/initfini-array.c
>@@ -0,0 +1,79 @@
>+/* Definitions for ELF systems with .init_array/.fini_array section
>+   Copyright (C) 2010
>+   Free Software Foundation, Inc.
>+
>+This file is part of GCC.
>+
>+GCC is free software; you can redistribute it and/or modify it under
>+the terms of the GNU General Public License as published by the Free
>+Software Foundation; either version 3, or (at your option) any later
>+version.
>+
>+GCC is distributed in the hope that it will be useful, but WITHOUT ANY
>+WARRANTY; without even the implied warranty of MERCHANTABILITY or
>+FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
>+for more details.
>+
>+You should have received a copy of the GNU General Public License
>+along with GCC; see the file COPYING3.  If not see
>+<http://www.gnu.org/licenses/>.  */
>+
>+#include "config.h"
>+#include "system.h"
>+#include "coretypes.h"
>+#include "target.h"
>+#include "output.h"
>+#include "tree.h"
>+#include "ggc.h"
>+
>+static GTY(()) section *init_array_section;
>+static GTY(()) section *fini_array_section;
>+
>+void
>+elf_initfini_array_init_sections (void)
>+{
>+  init_array_section = get_unnamed_section (0, output_section_asm_op,
>+					    "\t.section\t.init_array");
>+  fini_array_section = get_unnamed_section (0, output_section_asm_op,
>+					    "\t.section\t.fini_array");
>+}
>+
>+static section *
>+get_elf_initfini_array_priority_section (int priority,
>+					 bool constructor_p)
>+{
>+  section *sec;
>+  if (priority != DEFAULT_INIT_PRIORITY)
>+    {
>+      char buf[18];
>+      sprintf (buf, "%s.%.5u", 
>+	       constructor_p ? ".init_array" : ".fini_array",
>+	       priority);
>+      sec = get_section (buf, SECTION_WRITE, NULL_TREE);
>+    }
>+  else
>+    sec = constructor_p ? init_array_section : fini_array_section;
>+  return sec;
>+}
>+
>+/* Use .init_array section for constructors. */
>+
>+void
>+elf_init_array_asm_out_constructor (rtx symbol, int priority)
>+{
>+  section *sec = get_elf_initfini_array_priority_section (priority,
>+							  true);
>+  assemble_addr_to_section (symbol, sec);
>+}
>+
>+/* Use .fini_array section for destructors. */
>+
>+void
>+elf_fini_array_asm_out_destructor (rtx symbol, int priority)
>+{
>+  section *sec = get_elf_initfini_array_priority_section (priority,
>+							  false);
>+  assemble_addr_to_section (symbol, sec);
>+}
>+
>+#include "gt-initfini-array.h"
>diff --git a/gcc/config/initfini-array.h b/gcc/config/initfini-array.h
>new file mode 100644
>index 0000000..115996e
>--- /dev/null
>+++ b/gcc/config/initfini-array.h
>@@ -0,0 +1,33 @@
>+/* Definitions for ELF systems with .init_array/.fini_array section
>+   support.
>+   Copyright (C) 2010
>+   Free Software Foundation, Inc.
>+
>+   This file is part of GCC.
>+
>+   GCC is free software; you can redistribute it and/or modify it
>+   under the terms of the GNU General Public License as published
>+   by the Free Software Foundation; either version 3, or (at your
>+   option) any later version.
>+
>+   GCC is distributed in the hope that it will be useful, but WITHOUT
>+   ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
>+   or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public
>+   License for more details.
>+
>+   You should have received a copy of the GNU General Public License
>+   along with GCC; see the file COPYING3.  If not see
>+   <http://www.gnu.org/licenses/>.  */
>+
>+#ifndef TARGET_ASM_INIT_SECTIONS
>+#define TARGET_ASM_INIT_SECTIONS elf_initfini_array_init_sections
>+#endif
>+extern void elf_initfini_array_init_sections (void);
>+
>+/* Use .init_array/.fini_array section for constructors and destructors. */
>+#undef TARGET_ASM_CONSTRUCTOR
>+#define TARGET_ASM_CONSTRUCTOR elf_init_array_asm_out_constructor
>+#undef TARGET_ASM_DESTRUCTOR
>+#define TARGET_ASM_DESTRUCTOR elf_fini_array_asm_out_destructor
>+extern void elf_init_array_asm_out_constructor (rtx, int);
>+extern void elf_fini_array_asm_out_destructor (rtx, int);
>diff --git a/gcc/config/t-initfini-array b/gcc/config/t-initfini-array
>new file mode 100644
>index 0000000..6987d76
>--- /dev/null
>+++ b/gcc/config/t-initfini-array
>@@ -0,0 +1,23 @@
>+# Copyright (C) 2010
>+# 2009 Free Software Foundation, Inc.
>+#
>+# This file is part of GCC.
>+#
>+# GCC is free software; you can redistribute it and/or modify
>+# it under the terms of the GNU General Public License as published by
>+# the Free Software Foundation; either version 3, or (at your option)
>+# any later version.
>+#
>+# GCC is distributed in the hope that it will be useful,
>+# but WITHOUT ANY WARRANTY; without even the implied warranty of
>+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
>+# GNU General Public License for more details.
>+#
>+# You should have received a copy of the GNU General Public License
>+# along with GCC; see the file COPYING3.  If not see
>+# <http://www.gnu.org/licenses/>.
>+
>+initfini-array.o: $(srcdir)/config/initfini-array.c gt-initfini-array.h \
>+	$(CONFIG_H) $(SYSTEM_H) coretypes.h $(TARGET_H) output.h \
>+	$(TREE_H) $(GCC_H)
>+	$(COMPILER) -c $(ALL_COMPILERFLAGS) $(ALL_CPPFLAGS) $(INCLUDES) $<

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