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/* Configuration file for ARM BPABI targets.
Copyright (C) 2004, 2005, 2007, 2008
Free Software Foundation, Inc.
Contributed by CodeSourcery, LLC
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/>. */
/* Use the AAPCS ABI by default. */
#define ARM_DEFAULT_ABI ARM_ABI_AAPCS
/* Assume that AAPCS ABIs should adhere to the full BPABI. */
#define TARGET_BPABI (TARGET_AAPCS_BASED)
/* BPABI targets use EABI frame unwinding tables. */
#define TARGET_UNWIND_INFO 1
/* Section 4.1 of the AAPCS requires the use of VFP format. */
#undef FPUTYPE_DEFAULT
#define FPUTYPE_DEFAULT FPUTYPE_VFP
/* 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
#else
#define TARGET_ENDIAN_DEFAULT 0
#endif
/* EABI targets should enable interworking by default. */
#undef TARGET_DEFAULT
#define TARGET_DEFAULT (MASK_INTERWORK | TARGET_ENDIAN_DEFAULT)
/* The ARM BPABI functions return a boolean; they use no special
calling convention. */
#define FLOAT_LIB_COMPARE_RETURNS_BOOL(MODE, COMPARISON) TARGET_BPABI
/* The BPABI integer comparison routines return { -1, 0, 1 }. */
#define TARGET_LIB_INT_CMP_BIASED !TARGET_BPABI
#define TARGET_FIX_V4BX_SPEC " %{mcpu=arm8|mcpu=arm810|mcpu=strongarm*|march=armv4:--fix-v4bx}"
/* Tell the assembler to build BPABI binaries. */
#undef SUBTARGET_EXTRA_ASM_SPEC
#define SUBTARGET_EXTRA_ASM_SPEC "%{mabi=apcs-gnu|mabi=atpcs:-meabi=gnu;:-meabi=5}" TARGET_FIX_V4BX_SPEC
#ifndef SUBTARGET_EXTRA_LINK_SPEC
#define SUBTARGET_EXTRA_LINK_SPEC ""
#endif
/* The generic link spec in elf.h does not support shared libraries. */
#define BPABI_LINK_SPEC \
"%{mbig-endian:-EB} %{mlittle-endian:-EL} " \
"%{static:-Bstatic} %{shared:-shared} %{symbolic:-Bsymbolic} " \
"-X" SUBTARGET_EXTRA_LINK_SPEC TARGET_FIX_V4BX_SPEC
#undef LINK_SPEC
#define LINK_SPEC BPABI_LINK_SPEC
#if defined (__thumb__)
#define RENAME_LIBRARY_SET ".thumb_set"
#else
#define RENAME_LIBRARY_SET ".set"
#endif
/* Make __aeabi_AEABI_NAME an alias for __GCC_NAME. */
#define RENAME_LIBRARY(GCC_NAME, AEABI_NAME) \
__asm__ (".globl\t__aeabi_" #AEABI_NAME "\n" \
RENAME_LIBRARY_SET "\t__aeabi_" #AEABI_NAME \
", __" #GCC_NAME "\n");
/* Give some libgcc functions an additional __aeabi name. */
#ifdef L_muldi3
#define DECLARE_LIBRARY_RENAMES RENAME_LIBRARY (muldi3, lmul)
#endif
#ifdef L_muldi3
#define DECLARE_LIBRARY_RENAMES RENAME_LIBRARY (muldi3, lmul)
#endif
#ifdef L_fixdfdi
#define DECLARE_LIBRARY_RENAMES RENAME_LIBRARY (fixdfdi, d2lz)
#endif
#ifdef L_fixunsdfdi
#define DECLARE_LIBRARY_RENAMES RENAME_LIBRARY (fixunsdfdi, d2ulz)
#endif
#ifdef L_fixsfdi
#define DECLARE_LIBRARY_RENAMES RENAME_LIBRARY (fixsfdi, f2lz)
#endif
#ifdef L_fixunssfdi
#define DECLARE_LIBRARY_RENAMES RENAME_LIBRARY (fixunssfdi, f2ulz)
#endif
#ifdef L_floatdidf
#define DECLARE_LIBRARY_RENAMES RENAME_LIBRARY (floatdidf, l2d)
#endif
#ifdef L_floatdisf
#define DECLARE_LIBRARY_RENAMES RENAME_LIBRARY (floatdisf, l2f)
#endif
/* These renames are needed on ARMv6M. Other targets get them from
assembly routines. */
#ifdef L_fixunsdfsi
#define DECLARE_LIBRARY_RENAMES RENAME_LIBRARY (fixunsdfsi, d2uiz)
#endif
#ifdef L_fixunssfsi
#define DECLARE_LIBRARY_RENAMES RENAME_LIBRARY (fixunssfsi, f2uiz)
#endif
#ifdef L_floatundidf
#define DECLARE_LIBRARY_RENAMES RENAME_LIBRARY (floatundidf, ul2d)
#endif
#ifdef L_floatundisf
#define DECLARE_LIBRARY_RENAMES RENAME_LIBRARY (floatundisf, ul2f)
#endif
/* The BPABI requires that we always use an out-of-line implementation
of RTTI comparison, even if the target supports weak symbols,
because the same object file might be used on a target that does
not support merging symbols across DLL boundaries. This macro is
broken out separately so that it can be used within
TARGET_OS_CPP_BUILTINS in configuration files for systems based on
the BPABI. */
#define TARGET_BPABI_CPP_BUILTINS() \
do \
{ \
builtin_define ("__GXX_TYPEINFO_EQUALITY_INLINE=0"); \
} \
while (false)
#undef TARGET_OS_CPP_BUILTINS
#define TARGET_OS_CPP_BUILTINS() \
TARGET_BPABI_CPP_BUILTINS()
/* The BPABI specifies the use of .{init,fini}_array. Therefore, we
do not want GCC to put anything into the .{init,fini} sections. */
#undef INIT_SECTION_ASM_OP
#undef FINI_SECTION_ASM_OP
#define INIT_ARRAY_SECTION_ASM_OP ARM_EABI_CTORS_SECTION_OP
#define FINI_ARRAY_SECTION_ASM_OP ARM_EABI_DTORS_SECTION_OP
/* The legacy _mcount implementation assumes r11 points to a
4-word APCS frame. This is generally not true for EABI targets,
particularly not in Thumb mode. We assume the mcount
implementation does not require a counter variable (No Counter).
Note that __gnu_mcount_nc will be entered with a misaligned stack.
This is OK because it uses a special calling convention anyway. */
#undef NO_PROFILE_COUNTERS
#define NO_PROFILE_COUNTERS 1
#undef ARM_FUNCTION_PROFILER
#define ARM_FUNCTION_PROFILER(STREAM, LABELNO) \
{ \
fprintf (STREAM, "\tpush\t{lr}\n"); \
fprintf (STREAM, "\tbl\t__gnu_mcount_nc\n"); \
}
#undef SUBTARGET_FRAME_POINTER_REQUIRED
#define SUBTARGET_FRAME_POINTER_REQUIRED 0
/* __gnu_mcount_nc restores the original LR value before returning. Ensure
that there is no unnecessary hook set up. */
#undef PROFILE_HOOK
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