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jlechner |
/* Definitions of target machine for GNU compiler. Vxworks PowerPC version.
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Copyright (C) 1996, 2000, 2002, 2003, 2004, 2005
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Free Software Foundation, Inc.
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Contributed 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 it under
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the terms of the GNU General Public License as published by the Free
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Software Foundation; either version 2, or (at your option) any later
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version.
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GCC is distributed in the hope that it will be useful, but WITHOUT ANY
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WARRANTY; without even the implied warranty of MERCHANTABILITY or
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FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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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 COPYING. If not, write to the Free
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Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA
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02110-1301, USA. */
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/* Note to future editors: VxWorks is mostly an EABI target. We do
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not use rs6000/eabi.h because we would have to override most of
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it anyway. However, if you change that file, consider making
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analogous changes here too. */
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#undef TARGET_VERSION
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#define TARGET_VERSION fprintf (stderr, " (PowerPC VxWorks)");
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/* CPP predefined macros. */
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#undef TARGET_OS_CPP_BUILTINS
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#define TARGET_OS_CPP_BUILTINS() \
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do \
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{ \
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builtin_define ("__ppc"); \
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builtin_define ("__EABI__"); \
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builtin_define ("__ELF__"); \
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builtin_define ("__vxworks"); \
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builtin_define ("__VXWORKS__"); \
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if (!TARGET_SOFT_FLOAT) \
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builtin_define ("__hardfp"); \
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if (flag_pic == 2) \
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{ \
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builtin_define ("__PIC__=2"); \
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builtin_define ("__pic__=2"); \
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} \
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else if (flag_pic == 1) \
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{ \
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builtin_define ("__PIC__=1"); \
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builtin_define ("__pic__=1"); \
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} \
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\
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/* C89 namespace violation! */ \
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builtin_define ("CPU_FAMILY=PPC"); \
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} \
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while (0)
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/* Only big endian PPC is supported by VxWorks. */
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#undef BYTES_BIG_ENDIAN
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#define BYTES_BIG_ENDIAN 1
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/* We have to kill off the entire specs set created by rs6000/sysv4.h
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and substitute our own set. The top level vxworks.h has done some
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of this for us. */
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#undef SUBTARGET_EXTRA_SPECS
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#undef CPP_SPEC
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#undef CC1_SPEC
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#undef ASM_SPEC
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#define SUBTARGET_EXTRA_SPECS /* none needed */
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/* FIXME: The only reason we allow no -mcpu switch at all is because
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config-ml.in insists on a "." multilib. */
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#define CPP_SPEC \
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"%{!DCPU=*: \
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%{mcpu=403 : -DCPU=PPC403 ; \
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mcpu=405 : -DCPU=PPC405 ; \
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mcpu=440 : -DCPU=PPC440 ; \
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mcpu=603 : -DCPU=PPC603 ; \
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mcpu=604 : -DCPU=PPC604 ; \
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mcpu=860 : -DCPU=PPC860 ; \
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mcpu=8540: -DCPU=PPC85XX ; \
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: -DCPU=PPC604 }}" \
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VXWORKS_ADDITIONAL_CPP_SPEC
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#define CC1_SPEC \
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"%{G*} %{mno-sdata:-msdata=none} %{msdata:-msdata=default} \
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%{mlittle|mlittle-endian:-mstrict-align} \
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%{profile: -p} \
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%{fvec:-maltivec} %{fvec-eabi:-maltivec -mabi=altivec}"
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#define ASM_SPEC \
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"%(asm_cpu) \
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%{.s: %{mregnames} %{mno-regnames}} %{.S: %{mregnames} %{mno-regnames}} \
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%{v:-v} %{Qy:} %{!Qn:-Qy} %{n} %{T} %{Ym,*} %{Yd,*} %{Wa,*:%*} \
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%{mrelocatable} %{mrelocatable-lib} %{fpic:-K PIC} %{fPIC:-K PIC} -mbig"
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#undef LIB_SPEC
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#define LIB_SPEC VXWORKS_LIB_SPEC
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#undef LINK_SPEC
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#define LINK_SPEC VXWORKS_LINK_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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#undef TARGET_DEFAULT
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#define TARGET_DEFAULT \
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(MASK_POWERPC | MASK_NEW_MNEMONICS | MASK_EABI | MASK_STRICT_ALIGN)
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#undef PROCESSOR_DEFAULT
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#define PROCESSOR_DEFAULT PROCESSOR_PPC604
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/* Nor sdata, for kernel mode. We use this in
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SUBSUBTARGET_INITIALIZE_OPTIONS, after rs6000_rtp has been initialized. */
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#undef SDATA_DEFAULT_SIZE
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#define SDATA_DEFAULT_SIZE (TARGET_VXWORKS_RTP ? 8 : 0)
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#undef STACK_BOUNDARY
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#define STACK_BOUNDARY (16*BITS_PER_UNIT)
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/* Override sysv4.h, reset to the default. */
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#undef PREFERRED_STACK_BOUNDARY
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/* Enable SPE */
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#undef TARGET_SPE_ABI
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#undef TARGET_SPE
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#undef TARGET_E500
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#undef TARGET_ISEL
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#undef TARGET_FPRS
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#define TARGET_SPE_ABI rs6000_spe_abi
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#define TARGET_SPE rs6000_spe
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#define TARGET_E500 (rs6000_cpu == PROCESSOR_PPC8540)
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#define TARGET_ISEL rs6000_isel
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#define TARGET_FPRS (!rs6000_float_gprs)
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/* Make -mcpu=8540 imply SPE. ISEL is automatically enabled, the
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others must be done by hand. Handle -mrtp. Disable -fPIC
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for -mrtp - the VxWorks PIC model is not compatible with it. */
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#undef SUBSUBTARGET_OVERRIDE_OPTIONS
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#define SUBSUBTARGET_OVERRIDE_OPTIONS \
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do { \
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if (TARGET_E500) \
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{ \
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rs6000_spe = 1; \
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rs6000_spe_abi = 1; \
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rs6000_float_gprs = 1; \
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} \
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\
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if (!g_switch_set) \
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g_switch_value = SDATA_DEFAULT_SIZE; \
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VXWORKS_OVERRIDE_OPTIONS; \
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} while (0)
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/* No _mcount profiling on VxWorks. */
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#undef FUNCTION_PROFILER
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#define FUNCTION_PROFILER(FILE,LABELNO) VXWORKS_FUNCTION_PROFILER(FILE,LABELNO)
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