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709 |
jeremybenn |
/* Definitions of target machine for GCC,
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for ARM with targetting the VXWorks run time environment.
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Copyright (C) 1999, 2000, 2003, 2004, 2007, 2008, 2009, 2010, 2011
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Free Software Foundation, Inc.
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Contributed by: Mike Stump <mrs@wrs.com>
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Brought up to date by CodeSourcery, LLC.
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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
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3, or (at your option)
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any later version.
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GCC is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public 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 GCC; see the file COPYING3. If not see
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<http://www.gnu.org/licenses/>. */
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#define TARGET_OS_CPP_BUILTINS() \
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do { \
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if (TARGET_BIG_END) \
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builtin_define ("ARMEB"); \
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else \
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builtin_define ("ARMEL"); \
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\
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if (arm_arch_xscale) \
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builtin_define ("CPU=XSCALE"); \
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else if (arm_arch5) \
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builtin_define ("CPU=ARMARCH5"); \
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else if (arm_arch4) \
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{ \
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if (thumb_code) \
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builtin_define ("CPU=ARMARCH4_T"); \
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else \
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builtin_define ("CPU=ARMARCH4"); \
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} \
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VXWORKS_OS_CPP_BUILTINS (); \
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} while (0)
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#undef SUBTARGET_OVERRIDE_OPTIONS
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#define SUBTARGET_OVERRIDE_OPTIONS VXWORKS_OVERRIDE_OPTIONS
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/* Subsume the arm/elf.h definition, and add RTP hooks. */
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#undef SUBTARGET_CPP_SPEC
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#define SUBTARGET_CPP_SPEC "-D__ELF__" VXWORKS_ADDITIONAL_CPP_SPEC
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#undef CC1_SPEC
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#define CC1_SPEC \
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"%{tstrongarm:-mlittle-endian -mcpu=strongarm ; \
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t4: -mlittle-endian -march=armv4 ; \
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t4be: -mbig-endian -march=armv4 ; \
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t4t: -mthumb -mthumb-interwork -mlittle-endian -march=armv4t ; \
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t4tbe: -mthumb -mthumb-interwork -mbig-endian -march=armv4t ; \
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t5: -mlittle-endian -march=armv5 ; \
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t5be: -mbig-endian -march=armv5 ; \
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t5t: -mthumb -mthumb-interwork -mlittle-endian -march=armv5 ; \
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t5tbe: -mthumb -mthumb-interwork -mbig-endian -march=armv5 ; \
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txscale: -mlittle-endian -mcpu=xscale ; \
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txscalebe: -mbig-endian -mcpu=xscale ; \
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: -march=armv4}"
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/* Pass -EB for big-endian targets. */
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#define VXWORKS_ENDIAN_SPEC \
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"%{mbig-endian|t4be|t4tbe|t5be|t5tbe|txscalebe:-EB}"
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#undef SUBTARGET_EXTRA_ASM_SPEC
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#define SUBTARGET_EXTRA_ASM_SPEC VXWORKS_ENDIAN_SPEC
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#undef LINK_SPEC
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#define LINK_SPEC VXWORKS_LINK_SPEC " " VXWORKS_ENDIAN_SPEC
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#undef LIB_SPEC
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#define LIB_SPEC VXWORKS_LIB_SPEC
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#undef STARTFILE_SPEC
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#define STARTFILE_SPEC VXWORKS_STARTFILE_SPEC
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#undef ENDFILE_SPEC
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#define ENDFILE_SPEC VXWORKS_ENDFILE_SPEC
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/* There is no default multilib. */
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#undef MULTILIB_DEFAULTS
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#define FPUTYPE_DEFAULT "vfp"
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#undef FUNCTION_PROFILER
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#define FUNCTION_PROFILER VXWORKS_FUNCTION_PROFILER
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/* We want to be compatible with a version of "2.96" at one point in
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the past before this macro was changed. */
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#undef DEFAULT_STRUCTURE_SIZE_BOUNDARY
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#define DEFAULT_STRUCTURE_SIZE_BOUNDARY 8
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/* The kernel loader does not allow relocations to overflow, so we
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cannot allow arbitrary relocation addends in kernel modules or RTP
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executables. Also, the dynamic loader uses the resolved relocation
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value to distinguish references to the text and data segments, so we
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cannot allow arbitrary offsets for shared libraries either. */
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#undef ARM_OFFSETS_MUST_BE_WITHIN_SECTIONS_P
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#define ARM_OFFSETS_MUST_BE_WITHIN_SECTIONS_P 1
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#undef TARGET_DEFAULT_WORD_RELOCATIONS
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#define TARGET_DEFAULT_WORD_RELOCATIONS 1
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