129 lines
4.3 KiB
C
129 lines
4.3 KiB
C
/* Definitions for ARM running Linux-based GNU systems using ELF
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Copyright (C) 1993, 1994, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004
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Free Software Foundation, Inc.
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Contributed by Philip Blundell <philb@gnu.org>
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This file is part of GCC.
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GCC is free software; you can redistribute it and/or modify it
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under the terms of the GNU General Public License as published
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by the Free Software Foundation; either version 2, or (at your
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option) any later version.
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GCC is distributed in the hope that it will be useful, but WITHOUT
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ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public
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License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; see the file COPYING. If not, write to
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the Free Software Foundation, 59 Temple Place - Suite 330,
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Boston, MA 02111-1307, USA. */
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/* elfos.h should have already been included. Now just override
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any conflicting definitions and add any extras. */
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/* Run-time Target Specification. */
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#undef TARGET_VERSION
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#define TARGET_VERSION fputs (" (ARM GNU/Linux with ELF)", stderr);
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/* Do not assume anything about header files. */
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#define NO_IMPLICIT_EXTERN_C
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/* Default is to use APCS-32 mode. */
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#undef TARGET_DEFAULT
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#define TARGET_DEFAULT (ARM_FLAG_APCS_32 | ARM_FLAG_MMU_TRAPS)
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#define SUBTARGET_CPU_DEFAULT TARGET_CPU_arm6
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#define SUBTARGET_EXTRA_LINK_SPEC " -m armelf_linux -p"
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#undef MULTILIB_DEFAULTS
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#define MULTILIB_DEFAULTS \
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{ "marm", "mlittle-endian", "mhard-float", "mapcs-32", "mno-thumb-interwork" }
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#define CPP_APCS_PC_DEFAULT_SPEC "-D__APCS_32__"
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/* The GNU C++ standard library requires that these macros be defined. */
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#undef CPLUSPLUS_CPP_SPEC
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#define CPLUSPLUS_CPP_SPEC "-D_GNU_SOURCE %(cpp)"
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/* Now we define the strings used to build the spec file. */
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#undef LIB_SPEC
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#define LIB_SPEC \
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"%{pthread:-lpthread} \
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%{shared:-lc} \
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%{!shared:%{profile:-lc_p}%{!profile:-lc}}"
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#define LIBGCC_SPEC "%{msoft-float:-lfloat} -lgcc"
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/* Provide a STARTFILE_SPEC appropriate for GNU/Linux. Here we add
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the GNU/Linux magical crtbegin.o file (see crtstuff.c) which
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provides part of the support for getting C++ file-scope static
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object constructed before entering `main'. */
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#undef STARTFILE_SPEC
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#define STARTFILE_SPEC \
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"%{!shared: \
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%{pg:gcrt1.o%s} %{!pg:%{p:gcrt1.o%s} \
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%{!p:%{profile:gcrt1.o%s} \
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%{!profile:crt1.o%s}}}} \
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crti.o%s %{!shared:crtbegin.o%s} %{shared:crtbeginS.o%s}"
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/* Provide a ENDFILE_SPEC appropriate for GNU/Linux. Here we tack on
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the GNU/Linux magical crtend.o file (see crtstuff.c) which
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provides part of the support for getting C++ file-scope static
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object constructed before entering `main', followed by a normal
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GNU/Linux "finalizer" file, `crtn.o'. */
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#undef ENDFILE_SPEC
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#define ENDFILE_SPEC \
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"%{!shared:crtend.o%s} %{shared:crtendS.o%s} crtn.o%s"
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#undef LINK_SPEC
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#define LINK_SPEC "%{h*} %{version:-v} \
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%{b} %{Wl,*:%*} \
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%{static:-Bstatic} \
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%{shared:-shared} \
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%{symbolic:-Bsymbolic} \
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%{rdynamic:-export-dynamic} \
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%{!dynamic-linker:-dynamic-linker /lib/ld-linux.so.2} \
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-X \
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%{mbig-endian:-EB}" \
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SUBTARGET_EXTRA_LINK_SPEC
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#define TARGET_OS_CPP_BUILTINS() LINUX_TARGET_OS_CPP_BUILTINS()
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/* This is how we tell the assembler that two symbols have the same value. */
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#define ASM_OUTPUT_DEF(FILE, NAME1, NAME2) \
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do \
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{ \
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assemble_name (FILE, NAME1); \
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fputs (" = ", FILE); \
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assemble_name (FILE, NAME2); \
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fputc ('\n', FILE); \
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} \
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while (0)
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/* NWFPE always understands FPA instructions. */
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#undef FPUTYPE_DEFAULT
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#define FPUTYPE_DEFAULT FPUTYPE_FPA_EMU3
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/* Call the function profiler with a given profile label. */
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#undef ARM_FUNCTION_PROFILER
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#define ARM_FUNCTION_PROFILER(STREAM, LABELNO) \
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{ \
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fprintf (STREAM, "\tbl\tmcount%s\n", NEED_PLT_RELOC ? "(PLT)" : ""); \
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}
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/* The linux profiler clobbers the link register. Make sure the
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prologue knows to save it. */
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#define PROFILE_HOOK(X) \
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emit_insn (gen_rtx_CLOBBER (VOIDmode, gen_rtx_REG (SImode, LR_REGNUM)))
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#undef CC1_SPEC
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#define CC1_SPEC "%{profile:-p}"
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#define LINK_GCC_C_SEQUENCE_SPEC \
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"%{static:--start-group} %G %L %{static:--end-group}%{!static:%G}"
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