/* Definitions for ARM running Linux-based GNU systems using ELF
- Copyright (C) 1993, 1994, 1997, 1998, 1999, 2000, 2001, 2002
+ Copyright (C) 1993, 1994, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004,
+ 2005, 2006, 2007
Free Software Foundation, Inc.
Contributed by Philip Blundell <philb@gnu.org>
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 2, or (at your
+ 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
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. */
+ along with GCC; see the file COPYING3. If not see
+ <http://www.gnu.org/licenses/>. */
/* elfos.h should have already been included. Now just override
any conflicting definitions and add any extras. */
#undef TARGET_VERSION
#define TARGET_VERSION fputs (" (ARM GNU/Linux with ELF)", stderr);
-/* Do not assume anything about header files. */
-#define NO_IMPLICIT_EXTERN_C
+#undef TARGET_DEFAULT_FLOAT_ABI
+#define TARGET_DEFAULT_FLOAT_ABI ARM_FLOAT_ABI_HARD
+
+/* TARGET_BIG_ENDIAN_DEFAULT is set in
+ config.gcc for big endian configurations. */
+#if TARGET_BIG_ENDIAN_DEFAULT
+#define TARGET_ENDIAN_DEFAULT MASK_BIG_END
+#define TARGET_ENDIAN_OPTION "mbig-endian"
+#define TARGET_LINKER_EMULATION "armelfb_linux"
+#else
+#define TARGET_ENDIAN_DEFAULT 0
+#define TARGET_ENDIAN_OPTION "mlittle-endian"
+#define TARGET_LINKER_EMULATION "armelf_linux"
+#endif
-/* Default is to use APCS-32 mode. */
#undef TARGET_DEFAULT
-#define TARGET_DEFAULT (ARM_FLAG_APCS_32 | ARM_FLAG_MMU_TRAPS)
+#define TARGET_DEFAULT (TARGET_ENDIAN_DEFAULT)
-#define SUBTARGET_EXTRA_LINK_SPEC " -m armelf_linux -p"
+#define SUBTARGET_CPU_DEFAULT TARGET_CPU_arm6
+
+#define SUBTARGET_EXTRA_LINK_SPEC " -m " TARGET_LINKER_EMULATION " -p"
#undef MULTILIB_DEFAULTS
#define MULTILIB_DEFAULTS \
- { "marm", "mlittle-endian", "mhard-float", "mapcs-32", "mno-thumb-interwork" }
-
-#define CPP_APCS_PC_DEFAULT_SPEC "-D__APCS_32__"
-
-/* The GNU C++ standard library requires that these macros be defined. */
-#undef CPLUSPLUS_CPP_SPEC
-#define CPLUSPLUS_CPP_SPEC "-D_GNU_SOURCE %(cpp)"
+ { "marm", "mlittle-endian", "mhard-float", "mno-thumb-interwork" }
/* Now we define the strings used to build the spec file. */
+#undef LIB_SPEC
#define LIB_SPEC \
"%{pthread:-lpthread} \
%{shared:-lc} \
%{!shared:%{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'. */
-
-#undef STARTFILE_SPEC
-#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'. */
-
-#undef ENDFILE_SPEC
-#define ENDFILE_SPEC \
- "%{!shared:crtend.o%s} %{shared:crtendS.o%s} crtn.o%s"
+#define LIBGCC_SPEC "%{msoft-float:-lfloat} %{mfloat-abi=soft*:-lfloat} -lgcc"
-#undef LINK_SPEC
-#define LINK_SPEC "%{h*} %{version:-v} \
- %{b} %{Wl,*:%*} \
+#define GLIBC_DYNAMIC_LINKER "/lib/ld-linux.so.2"
+
+#define LINUX_TARGET_LINK_SPEC "%{h*} %{version:-v} \
+ %{b} \
%{static:-Bstatic} \
%{shared:-shared} \
%{symbolic:-Bsymbolic} \
%{rdynamic:-export-dynamic} \
- %{!dynamic-linker:-dynamic-linker /lib/ld-linux.so.2} \
+ %{!dynamic-linker:-dynamic-linker " LINUX_DYNAMIC_LINKER "} \
-X \
- %{mbig-endian:-EB}" \
+ %{mbig-endian:-EB} %{mlittle-endian:-EL}" \
SUBTARGET_EXTRA_LINK_SPEC
+#undef LINK_SPEC
+#define LINK_SPEC LINUX_TARGET_LINK_SPEC
+
#define TARGET_OS_CPP_BUILTINS() \
- do { \
- builtin_define_std ("unix"); \
- builtin_define_std ("linux"); \
- builtin_define ("__gnu_linux__"); \
- builtin_assert ("system=unix"); \
- builtin_assert ("system=posix"); \
- } while (0)
+ do \
+ { \
+ LINUX_TARGET_OS_CPP_BUILTINS(); \
+ } \
+ while (0)
/* This is how we tell the assembler that two symbols have the same value. */
#define ASM_OUTPUT_DEF(FILE, NAME1, NAME2) \
#undef ARM_FUNCTION_PROFILER
#define ARM_FUNCTION_PROFILER(STREAM, LABELNO) \
{ \
- fprintf (STREAM, "\tbl\tmcount%s\n", NEED_PLT_RELOC ? "(PLT)" : ""); \
+ fprintf (STREAM, "\tbl\tmcount%s\n", \
+ (TARGET_ARM && NEED_PLT_RELOC) ? "(PLT)" : ""); \
}
-#undef CC1_SPEC
-#define CC1_SPEC "%{profile:-p}"
+/* The GNU/Linux profiler clobbers the link register. Make sure the
+ prologue knows to save it. */
+#define PROFILE_HOOK(X) \
+ emit_insn (gen_rtx_CLOBBER (VOIDmode, gen_rtx_REG (SImode, LR_REGNUM)))
+
+/* The GNU/Linux profiler needs a frame pointer. */
+#define SUBTARGET_FRAME_POINTER_REQUIRED current_function_profile
+
+/* Add .note.GNU-stack. */
+#undef NEED_INDICATE_EXEC_STACK
+#define NEED_INDICATE_EXEC_STACK 1
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