diff options
Diffstat (limited to 'gcc-4.9/gcc/config/arm/bpabi.h')
| -rw-r--r-- | gcc-4.9/gcc/config/arm/bpabi.h | 163 |
1 files changed, 163 insertions, 0 deletions
diff --git a/gcc-4.9/gcc/config/arm/bpabi.h b/gcc-4.9/gcc/config/arm/bpabi.h new file mode 100644 index 000000000..bc223f8e3 --- /dev/null +++ b/gcc-4.9/gcc/config/arm/bpabi.h @@ -0,0 +1,163 @@ +/* Configuration file for ARM BPABI targets. + Copyright (C) 2004-2014 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. */ +#undef ARM_UNWIND_INFO +#define ARM_UNWIND_INFO 1 + +/* Section 4.1 of the AAPCS requires the use of VFP format. */ +#undef FPUTYPE_DEFAULT +#define FPUTYPE_DEFAULT "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|mcpu=fa526|mcpu=fa626:--fix-v4bx}" + +#if TARGET_BIG_ENDIAN_DEFAULT +#define BE8_LINK_SPEC \ + " %{!mlittle-endian:%{march=armv7-a|mcpu=cortex-a5 \ + |mcpu=cortex-a7 \ + |mcpu=cortex-a8|mcpu=cortex-a9|mcpu=cortex-a15 \ + |mcpu=cortex-a12 \ + |mcpu=cortex-a15.cortex-a7 \ + |mcpu=marvell-pj4 \ + |mcpu=cortex-a53 \ + |mcpu=cortex-a57 \ + |mcpu=cortex-a57.cortex-a53 \ + |mcpu=generic-armv7-a \ + |march=armv7ve \ + |march=armv7-m|mcpu=cortex-m3 \ + |march=armv7e-m|mcpu=cortex-m4 \ + |march=armv6-m|mcpu=cortex-m0 \ + |march=armv8-a \ + :%{!r:--be8}}}" +#else +#define BE8_LINK_SPEC \ + " %{mbig-endian:%{march=armv7-a|mcpu=cortex-a5 \ + |mcpu=cortex-a7 \ + |mcpu=cortex-a8|mcpu=cortex-a9|mcpu=cortex-a15 \ + |mcpu=cortex-a12 \ + |mcpu=cortex-a15.cortex-a7 \ + |mcpu=cortex-a53 \ + |mcpu=cortex-a57 \ + |mcpu=cortex-a57.cortex-a53 \ + |mcpu=marvell-pj4 \ + |mcpu=generic-armv7-a \ + |march=armv7ve \ + |march=armv7-m|mcpu=cortex-m3 \ + |march=armv7e-m|mcpu=cortex-m4 \ + |march=armv6-m|mcpu=cortex-m0 \ + |march=armv8-a \ + :%{!r:--be8}}}" +#endif + +/* 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 + +/* Split out the EABI common values so other targets can use it. */ +#define EABI_LINK_SPEC \ + TARGET_FIX_V4BX_SPEC BE8_LINK_SPEC + +/* 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 EABI_LINK_SPEC + +#undef LINK_SPEC +#define LINK_SPEC BPABI_LINK_SPEC + +/* 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 |