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freebsd-nq/contrib/gcc/config/mips/freebsd.h
Konstantin Belousov b375a6d71d Pass --enable-new-dtags to the linker invocation by default. If 
desired, one can turn off the generation of post-ELF standard dtags by
overriding it with --disable-new-dtags after the default switch.

Immediate effect of the change is that -rpath path is now stored both
in DT_RPATH and DT_RUNPATH tags, which is the right way to provide
rpath for dynamic linker supporting DT_RUNPATH per specification.

Reviewed by:	kan
MFC after:	1 month
2012-07-15 10:54:10 +00:00

357 lines
14 KiB
C
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/* Definitions for MIPS varients running FreeBSD with ELF format
Copyright (C) 2008 Free Software Foundation, Inc.
Continued by David O'Brien <obrien@freebsd.org>
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 2, 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 COPYING. If not, write to
the Free Software Foundation, 51 Franklin Street, Fifth Floor,
Boston, MA 02110-1301, USA. */
/* $FreeBSD$ */
/* This defines which switch letters take arguments. -G is a MIPS
special. */
#undef SWITCH_TAKES_ARG
#define SWITCH_TAKES_ARG(CHAR) \
(FBSD_SWITCH_TAKES_ARG (CHAR) \
|| (CHAR) == 'R' \
|| (CHAR) == 'G')
#undef SUBTARGET_EXTRA_SPECS /* mips.h bogusly defines it. */
#define SUBTARGET_EXTRA_SPECS \
{ "fbsd_dynamic_linker", FBSD_DYNAMIC_LINKER}, \
{ "fbsd_link_spec", FBSD_LINK_SPEC }
/* config/mips/mips.h defines CC1_SPEC,
but gives us an "out" with SUBTARGET_CC1_SPEC. */
#undef SUBTARGET_CC1_SPEC
#define SUBTARGET_CC1_SPEC "%{profile:-p}"
/* Provide a LINK_SPEC appropriate for FreeBSD. Here we provide support
for the special GCC options -static and -shared, which allow us to
link things in one of these three modes by applying the appropriate
combinations of options at link-time. We like to support here for
as many of the other GNU linker options as possible. But I don't
have the time to search for those flags. I am sure how to add
support for -soname shared_object_name. H.J.
When the -shared link option is used a final link is not being
done. */
#define FBSD_LINK_SPEC "\
%{p:%nconsider using `-pg' instead of `-p' with gprof(1) } \
%{v:-V} \
%{assert*} %{R*} %{rpath*} %{defsym*} \
%{shared:-Bshareable %{h*} %{soname*}} \
%{!static:--enable-new-dtags} \
%{!shared: \
%{!static: \
%{rdynamic: -export-dynamic} \
%{!dynamic-linker:-dynamic-linker %(fbsd_dynamic_linker) }} \
%{static:-Bstatic}} \
%{symbolic:-Bsymbolic} "
#undef LINK_SPEC
#define LINK_SPEC "\
%{EB} %{EL} %(endian_spec) \
%{G*} %{mips1} %{mips2} %{mips3} %{mips4} \
%{mips32} %{mips32r2} %{mips64} %{mips64r2} \
%{bestGnum} %{call_shared} %{no_archive} %{exact_version} \
%{mabi=32:-melf32%{EB:b}%{EL:l}tsmip_fbsd} \
%{mabi=n32:-melf32%{EB:b}%{EL:l}tsmipn32_fbsd} \
%{mabi=64:-melf64%{EB:b}%{EL:l}tsmip_fbsd} \
%{mabi=o64:-melf64%{EB:b}%{EL:l}tsmip_fbsd} \
%(fbsd_link_spec)"
#undef LINK_GCC_C_SEQUENCE_SPEC
#define LINK_GCC_C_SEQUENCE_SPEC \
"%{static:--start-group} %G %L %{static:--end-group}%{!static:%G}"
/* Reset our STARTFILE_SPEC which was properly set in config/freebsd.h
but trashed by config/mips/elf.h. */
#undef STARTFILE_SPEC
#define STARTFILE_SPEC FBSD_STARTFILE_SPEC
/* Provide an ENDFILE_SPEC appropriate for FreeBSD/mips. */
#undef ENDFILE_SPEC
#define ENDFILE_SPEC FBSD_ENDFILE_SPEC
/* Reset our LIB_SPEC which was properly set in config/freebsd.h
but trashed by config/mips/elf.h. */
#undef LIB_SPEC
#define LIB_SPEC FBSD_LIB_SPEC
/* config/mips/mips.h defines CPP_SPEC, and it expects SUBTARGET_CPP_SPEC. */
#undef SUBTARGET_CPP_SPEC
#define SUBTARGET_CPP_SPEC FBSD_CPP_SPEC
/************************[ Target stuff ]***********************************/
/* Define the actual types of some ANSI-mandated types.
Needs to agree with <machine/ansi.h>. GCC defaults come from c-decl.c,
c-common.c, and config/<arch>/<arch>.h. */
#undef TARGET_DEFAULT
#define TARGET_DEFAULT (MASK_ABICALLS | MASK_SOFT_FLOAT)
#if TARGET_ENDIAN_DEFAULT != 0
#define TARGET_VERSION fprintf (stderr, " (FreeBSD/mips)");
#else
#define TARGET_VERSION fprintf (stderr, " (FreeBSD/mipsel)");
#endif
/* The generic MIPS TARGET_CPU_CPP_BUILTINS are incorrect for FreeBSD.
Specifically, they define too many namespace-invasive macros. Override
them here. Note this is structured for easy comparison to the version
in mips.h. */
#undef TARGET_CPU_CPP_BUILTINS
#define TARGET_CPU_CPP_BUILTINS() \
do \
{ \
builtin_assert ("machine=mips"); \
builtin_assert ("cpu=mips"); \
builtin_define ("__mips__"); \
\
if (TARGET_64BIT) \
builtin_define ("__mips64"); \
\
if (TARGET_FLOAT64) \
builtin_define ("__mips_fpr=64"); \
else \
builtin_define ("__mips_fpr=32"); \
\
if (TARGET_MIPS16) \
builtin_define ("__mips16"); \
\
if (mips_abi == ABI_N32) \
{ \
builtin_define ("__mips_n32"); \
builtin_define ("_ABIN32=2"); \
builtin_define ("_MIPS_SIM=_ABIN32"); \
builtin_define ("_MIPS_SZLONG=32"); \
builtin_define ("_MIPS_SZPTR=32"); \
} \
else if (mips_abi == ABI_64) \
{ \
builtin_define ("__mips_n64"); \
builtin_define ("_ABI64=3"); \
builtin_define ("_MIPS_SIM=_ABI64"); \
builtin_define ("_MIPS_SZLONG=64"); \
builtin_define ("_MIPS_SZPTR=64"); \
} \
else if (mips_abi == ABI_O64) \
{ \
builtin_define ("__mips_o64"); \
builtin_define ("_ABIO64=4"); \
builtin_define ("_MIPS_SIM=_ABIO64"); \
builtin_define ("_MIPS_SZLONG=64"); \
builtin_define ("_MIPS_SZPTR=64"); \
} \
else if (mips_abi == ABI_EABI) \
{ \
builtin_define ("__mips_eabi"); \
builtin_define ("_ABIEMB=5"); \
builtin_define ("_MIPS_SIM=_ABIEMB"); \
if (TARGET_LONG64) \
builtin_define ("_MIPS_SZLONG=64"); \
else \
builtin_define ("_MIPS_SZLONG=32"); \
if (TARGET_64BIT) \
builtin_define ("_MIPS_SZPTR=64"); \
else \
builtin_define ("_MIPS_SZPTR=32"); \
} \
else \
{ \
builtin_define ("__mips_o32"); \
builtin_define ("_ABIO32=1"); \
builtin_define ("_MIPS_SIM=_ABIO32"); \
builtin_define ("_MIPS_SZLONG=32"); \
builtin_define ("_MIPS_SZPTR=32"); \
} \
if (TARGET_FLOAT64) \
builtin_define ("_MIPS_FPSET=32"); \
else \
builtin_define ("_MIPS_FPSET=16"); \
\
builtin_define ("_MIPS_SZINT=32"); \
\
MIPS_CPP_SET_PROCESSOR ("_MIPS_ARCH", mips_arch_info); \
MIPS_CPP_SET_PROCESSOR ("_MIPS_TUNE", mips_tune_info); \
\
if (ISA_MIPS1) \
{ \
builtin_define ("__mips=1"); \
builtin_define ("_MIPS_ISA=_MIPS_ISA_MIPS1"); \
} \
else if (ISA_MIPS2) \
{ \
builtin_define ("__mips=2"); \
builtin_define ("_MIPS_ISA=_MIPS_ISA_MIPS2"); \
} \
else if (ISA_MIPS3) \
{ \
builtin_define ("__mips=3"); \
builtin_define ("_MIPS_ISA=_MIPS_ISA_MIPS3"); \
} \
else if (ISA_MIPS4) \
{ \
builtin_define ("__mips=4"); \
builtin_define ("_MIPS_ISA=_MIPS_ISA_MIPS4"); \
} \
else if (ISA_MIPS32) \
{ \
builtin_define ("__mips=32"); \
builtin_define ("_MIPS_ISA=_MIPS_ISA_MIPS32"); \
builtin_define ("__mips_isa_rev=1"); \
} \
else if (ISA_MIPS32R2) \
{ \
builtin_define ("__mips=32"); \
builtin_define ("_MIPS_ISA=_MIPS_ISA_MIPS32"); \
builtin_define ("__mips_isa_rev=2"); \
} \
else if (ISA_MIPS64) \
{ \
builtin_define ("__mips=64"); \
builtin_define ("_MIPS_ISA=_MIPS_ISA_MIPS64"); \
builtin_define ("__mips_isa_rev=1"); \
} \
else if (ISA_MIPS64R2) \
{ \
builtin_define ("__mips=64"); \
builtin_define ("_MIPS_ISA=_MIPS_ISA_MIPS64"); \
builtin_define ("__mips_isa_rev=2"); \
} \
\
if (TARGET_HARD_FLOAT) \
builtin_define ("__mips_hard_float"); \
else if (TARGET_SOFT_FLOAT) \
builtin_define ("__mips_soft_float"); \
\
if (TARGET_SINGLE_FLOAT) \
builtin_define ("__mips_single_float"); \
\
if (TARGET_BIG_ENDIAN) \
builtin_define ("__MIPSEB__"); \
else \
builtin_define ("__MIPSEL__"); \
\
/* No language dialect defines. */ \
if (TARGET_ABICALLS) \
builtin_define ("__ABICALLS__"); \
} \
while (0)
/* Default ABI and ISA */
/*
* XXX/juli
* Shouldn't this also be dependent on !mips*?
*/
#ifdef MIPS_CPU_STRING_DEFAULT
#define DRIVER_SELF_ISA_SPEC "%{!march=*: -march=" MIPS_CPU_STRING_DEFAULT "}"
#else
#define DRIVER_SELF_ISA_SPEC "%{!march=*: -march=from-abi}"
#endif
#undef DRIVER_SELF_SPECS
#if MIPS_ABI_DEFAULT == ABI_N32
#define DRIVER_SELF_SPECS \
"%{!EB:%{!EL:%(endian_spec)}}", \
"%{!mabi=*: -mabi=n32}", \
DRIVER_SELF_ISA_SPEC
#elif MIPS_ABI_DEFAULT == ABI_64
#define DRIVER_SELF_SPECS \
"%{!EB:%{!EL:%(endian_spec)}}", \
"%{!mabi=*: -mabi=64}", \
DRIVER_SELF_ISA_SPEC
#elif MIPS_ABI_DEFAULT == ABI_O64
#define DRIVER_SELF_SPECS \
"%{!EB:%{!EL:%(endian_spec)}}", \
"%{!mabi=*: -mabi=o64}", \
DRIVER_SELF_ISA_SPEC
#else /* default to o32 */
#define DRIVER_SELF_SPECS \
"%{!EB:%{!EL:%(endian_spec)}}", \
"%{!mabi=*: -mabi=32}", \
DRIVER_SELF_ISA_SPEC
#endif
#if 0
/* Don't default to pcc-struct-return, we want to retain compatibility with
older gcc versions AND pcc-struct-return is nonreentrant.
(even though the SVR4 ABI for the i386 says that records and unions are
returned in memory). */
#undef DEFAULT_PCC_STRUCT_RETURN
#define DEFAULT_PCC_STRUCT_RETURN 0
#endif
/************************[ Assembler stuff ]********************************/
#undef SUBTARGET_ASM_SPEC
#define SUBTARGET_ASM_SPEC \
"%{!mno-abicalls: %{!fno-PIC:%{!fno-pic:-KPIC}}}"
/* -G is incompatible with -KPIC which is the default, so only allow objects
in the small data section if the user explicitly asks for it. */
#undef MIPS_DEFAULT_GVALUE
#define MIPS_DEFAULT_GVALUE 0
/* If defined, a C expression whose value is a string containing the
assembler operation to identify the following data as
uninitialized global data. If not defined, and neither
`ASM_OUTPUT_BSS' nor `ASM_OUTPUT_ALIGNED_BSS' are defined,
uninitialized global data will be output in the data section if
`-fno-common' is passed, otherwise `ASM_OUTPUT_COMMON' will be
used. */
#undef BSS_SECTION_ASM_OP
#define BSS_SECTION_ASM_OP "\t.section\t.bss"
/* Like `ASM_OUTPUT_BSS' except takes the required alignment as a
separate, explicit argument. If you define this macro, it is used
in place of `ASM_OUTPUT_BSS', and gives you more flexibility in
handling the required alignment of the variable. The alignment is
specified as the number of bits.
Try to use function `asm_output_aligned_bss' defined in file
`varasm.c' when defining this macro. */
#undef ASM_OUTPUT_ALIGNED_BSS
#define ASM_OUTPUT_ALIGNED_BSS(FILE, DECL, NAME, SIZE, ALIGN) \
asm_output_aligned_bss (FILE, DECL, NAME, SIZE, ALIGN)
/* Standard AT&T UNIX 'as' local label spelling. */
#undef LOCAL_LABEL_PREFIX
#define LOCAL_LABEL_PREFIX "."
/* Currently we don't support 128bit long doubles, so for now we force
n32 to be 64bit. */
#undef LONG_DOUBLE_TYPE_SIZE
#define LONG_DOUBLE_TYPE_SIZE 64
#ifdef IN_LIBGCC2
#undef LIBGCC2_LONG_DOUBLE_TYPE_SIZE
#define LIBGCC2_LONG_DOUBLE_TYPE_SIZE 64
#endif
/************************[ Debugger stuff ]*********************************/
#undef DBX_DEBUGGING_INFO
#undef MIPS_DEBUGGING_INFO
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