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+/* Definitions for ARM running Linux-based GNU systems using ELF
+ Copyright (C) 1993, 1994, 1997, 1998, 1999 Free Software Foundation, Inc.
+ Contributed by Philip Blundell <philb@gnu.org>
+
+This file is part of GNU CC.
+
+GNU CC 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 2, or (at your option)
+any later version.
+
+GNU CC 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 this program; see the file COPYING. If not, write to
+the Free Software Foundation, 59 Temple Place - Suite 330,
+Boston, MA 02111-1307, USA. */
+
+/* Run-time Target Specification. */
+#define TARGET_VERSION fputs (" (ARM GNU/Linux with ELF)", stderr);
+
+/* We have libgcc2. */
+#define HAVE_ATEXIT
+
+/* Default is to use APCS-32 mode. */
+#ifndef SUBTARGET_DEFAULT_APCS26
+#define TARGET_DEFAULT (ARM_FLAG_APCS_32 | ARM_FLAG_SHORT_BYTE)
+#define SUBTARGET_EXTRA_LINK_SPEC \
+ " %{mapcs-26:-m elf32arm26} %{!mapcs-26:-m elf32arm}"
+#define SUBTARGET_EXTRA_ASM_SPEC \
+ " %{mapcs-26:-mapcs-26} %(!mapcs-26:-mapcs-32}"
+#endif
+
+/* This was defined in linux.h. Define it here also. */
+#undef DEFAULT_VTABLE_THUNKS
+#define DEFAULT_VTABLE_THUNKS 1
+
+/* Handle #pragma weak and #pragma pack. */
+#define HANDLE_SYSV_PRAGMA
+
+/* Now we define the strings used to build the spec file. */
+#define LIB_SPEC \
+ "%{shared: -lc} \
+ %{!shared: %{pthread:-lpthread} \
+ %{profile:-lc_p} %{!profile: -lc}}"
+
+#define LIBGCC_SPEC "%{msoft-float:-lfloat} -lgcc"
+
+/* Provide a STARTFILE_SPEC appropriate for GNU/Linux. Here we add
+ the GNU/Linux magical crtbegin.o file (see crtstuff.c) which
+ provides part of the support for getting C++ file-scope static
+ object constructed before entering `main'. */
+
+#define STARTFILE_SPEC \
+ "%{!shared: \
+ %{pg:gcrt1.o%s} %{!pg:%{p:gcrt1.o%s} \
+ %{!p:%{profile:gcrt1.o%s} \
+ %{!profile:crt1.o%s}}}} \
+ crti.o%s %{!shared:crtbegin.o%s} %{shared:crtbeginS.o%s}"
+
+/* Provide a ENDFILE_SPEC appropriate for GNU/Linux. Here we tack on
+ the GNU/Linux magical crtend.o file (see crtstuff.c) which
+ provides part of the support for getting C++ file-scope static
+ object constructed before entering `main', followed by a normal
+ GNU/Linux "finalizer" file, `crtn.o'. */
+
+#define ENDFILE_SPEC \
+ "%{!shared:crtend.o%s} %{shared:crtendS.o%s} crtn.o%s"
+
+#define LINK_SPEC "%{h*} %{version:-v} \
+ %{b} %{Wl,*:%*} \
+ %{static:-Bstatic} \
+ %{shared:-shared} \
+ %{symbolic:-Bsymbolic} \
+ %{rdynamic:-export-dynamic} \
+ %{!dynamic-linker:-dynamic-linker /lib/ld-linux.so.2} \
+ -X \
+ %{mbig-endian:-EB}" \
+ SUBTARGET_EXTRA_LINK_SPEC
+
+#undef CPP_PREDEFINES
+#define CPP_PREDEFINES \
+"-Dunix -Darm -Dlinux -Asystem(unix) -Asystem(posix) -Acpu(arm) \
+-Amachine(arm) -D__ELF__ -Darm_elf"
+
+#ifndef SUBTARGET_DEFAULT_APCS26
+#undef CPP_APCS_PC_DEFAULT_SPEC
+#define CPP_APCS_PC_DEFAULT_SPEC "-D__APCS_32__"
+/* On 32-bit machine it is always safe to assume we have the "new"
+ floating point system. */
+#undef FP_DEFAULT
+#define FP_DEFAULT FP_SOFT3
+#endif
+
+/* Allow #sccs in preprocessor. */
+#define SCCS_DIRECTIVE
+
+#define USER_LABEL_PREFIX "" /* For ELF the default is no underscores */
+#define LOCAL_LABEL_PREFIX "."
+
+/* Attach a special .ident directive to the end of the file to identify
+ the version of GCC which compiled this code. */
+#define IDENT_ASM_OP ".ident"
+
+/* Output #ident as a .ident. */
+#define ASM_OUTPUT_IDENT(FILE, NAME) \
+ fprintf (FILE, "\t%s\t\"%s\"\n", IDENT_ASM_OP, NAME);
+
+#ifdef IDENTIFY_WITH_IDENT
+#define ASM_IDENTIFY_GCC(FILE) /* nothing */
+#define ASM_IDENTIFY_LANGUAGE(FILE) \
+ fprintf (FILE, "\t%s \"GCC (%s) %s\"\n", IDENT_ASM_OP, \
+ lang_identify (), version_string)
+#else
+#define ASM_FILE_END(FILE) \
+do { \
+ if (!flag_no_ident) \
+ fprintf ((FILE), "\t%s\t\"GCC: (GNU) %s\"\n", \
+ IDENT_ASM_OP, version_string); \
+ } while (0)
+#endif
+
+/* Support const sections and the ctors and dtors sections for g++.
+ Note that there appears to be two different ways to support const
+ sections at the moment. You can either #define the symbol
+ READONLY_DATA_SECTION (giving it some code which switches to the
+ readonly data section) or else you can #define the symbols
+ EXTRA_SECTIONS, EXTRA_SECTION_FUNCTIONS, SELECT_SECTION, and
+ SELECT_RTX_SECTION. We do both here just to be on the safe side. */
+#define USE_CONST_SECTION 1
+
+/* Support for Constructors and Destructors. */
+#define READONLY_DATA_SECTION() const_section ()
+
+/* A default list of other sections which we might be "in" at any given
+ time. For targets that use additional sections (e.g. .tdesc) you
+ should override this definition in the target-specific file which
+ includes this file. */
+#define SUBTARGET_EXTRA_SECTIONS in_const,
+
+/* A default list of extra section function definitions. For targets
+ that use additional sections (e.g. .tdesc) you should override this
+ definition in the target-specific file which includes this file. */
+#define SUBTARGET_EXTRA_SECTION_FUNCTIONS CONST_SECTION_FUNCTION
+
+extern void text_section ();
+
+#define CONST_SECTION_ASM_OP ".section\t.rodata"
+
+#define CONST_SECTION_FUNCTION \
+void \
+const_section () \
+{ \
+ if (!USE_CONST_SECTION) \
+ text_section (); \
+ else if (in_section != in_const) \
+ { \
+ fprintf (asm_out_file, "%s\n", CONST_SECTION_ASM_OP); \
+ in_section = in_const; \
+ } \
+}
+
+/* Switch into a generic section.
+ This is currently only used to support section attributes.
+
+ We make the section read-only and executable for a function decl,
+ read-only for a const data decl, and writable for a non-const data decl. */
+#define ASM_OUTPUT_SECTION_NAME(FILE, DECL, NAME, RELOC) \
+ fprintf (FILE, ".section\t%s,\"%s\",%%progbits\n", NAME, \
+ (DECL) && TREE_CODE (DECL) == FUNCTION_DECL ? "ax" : \
+ (DECL) && DECL_READONLY_SECTION (DECL, RELOC) ? "a" : "aw")
+
+/* A C statement or statements to switch to the appropriate
+ section for output of DECL. DECL is either a `VAR_DECL' node
+ or a constant of some sort. RELOC indicates whether forming
+ the initial value of DECL requires link-time relocations. */
+#define SELECT_SECTION(DECL,RELOC) \
+{ \
+ if (TREE_CODE (DECL) == STRING_CST) \
+ { \
+ if (! flag_writable_strings) \
+ const_section (); \
+ else \
+ data_section (); \
+ } \
+ else if (TREE_CODE (DECL) == VAR_DECL) \
+ { \
+ if ((flag_pic && RELOC) \
+ || !TREE_READONLY (DECL) || TREE_SIDE_EFFECTS (DECL) \
+ || !DECL_INITIAL (DECL) \
+ || (DECL_INITIAL (DECL) != error_mark_node \
+ && !TREE_CONSTANT (DECL_INITIAL (DECL)))) \
+ data_section (); \
+ else \
+ const_section (); \
+ } \
+ else \
+ const_section (); \
+}
+
+/* A C statement or statements to switch to the appropriate
+ section for output of RTX in mode MODE. RTX is some kind
+ of constant in RTL. The argument MODE is redundant except
+ in the case of a `const_int' rtx. Currently, these always
+ go into the const section. */
+#define SELECT_RTX_SECTION(MODE,RTX) const_section ()
+
+/* On svr4, we *do* have support for the .init and .fini sections, and we
+ can put stuff in there to be executed before and after `main'. We let
+ crtstuff.c and other files know this by defining the following symbols.
+ The definitions say how to change sections to the .init and .fini
+ sections. This is the same for all known svr4 assemblers. */
+#define INIT_SECTION_ASM_OP ".section\t.init"
+#define FINI_SECTION_ASM_OP ".section\t.fini"
+
+
+/* This is how we tell the assembler that a symbol is weak. */
+#define ASM_WEAKEN_LABEL(FILE,NAME) \
+ do { fputs ("\t.weak\t", FILE); assemble_name (FILE, NAME); \
+ fputc ('\n', FILE); } while (0)
+
+/* This is how we tell the assembler that two symbols have the same value. */
+
+#define ASM_OUTPUT_DEF(FILE,NAME1,NAME2) \
+ do { assemble_name (FILE, NAME1); \
+ fputs (" = ", FILE); \
+ assemble_name (FILE, NAME2); \
+ fputc ('\n', FILE); } while (0)
+
+/* Make DWARF2 an option, but keep DBX as the default for now.
+ Use -gdwarf-2 to turn on DWARF2. */
+#define DWARF2_DEBUGGING_INFO
+#define PREFERRED_DEBUGGING_TYPE DBX_DEBUG
+
+/* Get the standard ELF stabs definitions. */
+#include "dbxelf.h"
+
+#include "arm/elf.h"
+#include "arm/linux-gas.h"
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