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/* Definitions of target machine for GNU compiler. Vxworks PowerPC version.
Copyright (C) 1996-2015 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/>. */
/* Note to future editors: VxWorks is mostly an EABI target. We do
not use rs6000/eabi.h because we would have to override most of
it anyway. However, if you change that file, consider making
analogous changes here too. */
/* CPP predefined macros. */
#undef TARGET_OS_CPP_BUILTINS
#define TARGET_OS_CPP_BUILTINS() \
do \
{ \
builtin_define ("__ppc"); \
builtin_define ("__PPC__"); \
builtin_define ("__EABI__"); \
builtin_define ("__ELF__"); \
if (!TARGET_SOFT_FLOAT) \
builtin_define ("__hardfp"); \
\
/* C89 namespace violation! */ \
builtin_define ("CPU_FAMILY=PPC"); \
\
VXWORKS_OS_CPP_BUILTINS (); \
} \
while (0)
/* Only big endian PPC is supported by VxWorks. */
#undef BYTES_BIG_ENDIAN
#define BYTES_BIG_ENDIAN 1
#undef WORDS_BIG_ENDIAN
#define WORDS_BIG_ENDIAN 1
/* We have to kill off the entire specs set created by rs6000/sysv4.h
and substitute our own set. The top level vxworks.h has done some
of this for us. */
#undef SUBTARGET_EXTRA_SPECS
#undef CPP_SPEC
#undef CC1_SPEC
#undef ASM_SPEC
#define SUBTARGET_EXTRA_SPECS /* none needed */
/* VxWorks and VxWorksAE (aka 653) expect different CPU values to designate
SPE on 8548. We define a dedicated macro for the base VxWorks here, which
the AE configuration will override. */
#define VXCPU_FOR_8548 "PPC85XX"
/* FIXME: The only reason we allow no -mcpu switch at all is because
config-ml.in insists on a "." multilib. */
#define CPP_SPEC \
"%{!DCPU=*: \
%{mcpu=403 : -DCPU=PPC403 ; \
mcpu=405 : -DCPU=PPC405 ; \
mcpu=440 : -DCPU=PPC440 ; \
mcpu=464 : -DCPU=PPC464 ; \
mcpu=476 : -DCPU=PPC476 ; \
mcpu=603 : -DCPU=PPC603 ; \
mcpu=604 : -DCPU=PPC604 ; \
mcpu=860 : -DCPU=PPC860 ; \
mcpu=8540: -DCPU=PPC85XX ; \
mcpu=8548: -DCPU=" VXCPU_FOR_8548 "; \
: -DCPU=PPC604 }}" \
VXWORKS_ADDITIONAL_CPP_SPEC
#define CC1_SPEC \
"%{G*} %{mno-sdata:-msdata=none} %{msdata:-msdata=default} \
%{mlittle|mlittle-endian:-mstrict-align}"
#define ASM_SPEC \
"%(asm_cpu) \
%{,assembler|,assembler-with-cpp: %{mregnames} %{mno-regnames}} \
%{mrelocatable} %{mrelocatable-lib} %{" FPIC_SPEC ":-K PIC} -mbig"
#undef LIB_SPEC
#define LIB_SPEC VXWORKS_LIB_SPEC
#undef LINK_SPEC
#define LINK_SPEC VXWORKS_LINK_SPEC
#undef STARTFILE_SPEC
#define STARTFILE_SPEC VXWORKS_STARTFILE_SPEC
#undef ENDFILE_SPEC
#define ENDFILE_SPEC VXWORKS_ENDFILE_SPEC
/* There is no default multilib. */
#undef MULTILIB_DEFAULTS
#undef TARGET_DEFAULT
#define TARGET_DEFAULT (MASK_EABI | MASK_STRICT_ALIGN)
#undef PROCESSOR_DEFAULT
#define PROCESSOR_DEFAULT PROCESSOR_PPC604
/* Nor sdata, for kernel mode. We use this in
SUBSUBTARGET_INITIALIZE_OPTIONS, after rs6000_rtp has been initialized. */
#undef SDATA_DEFAULT_SIZE
#define SDATA_DEFAULT_SIZE (TARGET_VXWORKS_RTP ? 8 : 0)
/* Enforce 16bytes alignment for the stack pointer, to permit general
compliance with e.g. Altivec instructions requirements. Make sure
this isn't overruled by the EABI constraints. */
#undef STACK_BOUNDARY
#define STACK_BOUNDARY (16*BITS_PER_UNIT)
#undef PREFERRED_STACK_BOUNDARY
#define PREFERRED_STACK_BOUNDARY STACK_BOUNDARY
#undef ABI_STACK_BOUNDARY
#undef SUBSUBTARGET_OVERRIDE_OPTIONS
#define SUBSUBTARGET_OVERRIDE_OPTIONS \
do { \
if (!global_options_set.x_g_switch_value) \
g_switch_value = SDATA_DEFAULT_SIZE; \
VXWORKS_OVERRIDE_OPTIONS; \
} while (0)
/* No _mcount profiling on VxWorks. */
#undef FUNCTION_PROFILER
#define FUNCTION_PROFILER(FILE,LABELNO) VXWORKS_FUNCTION_PROFILER(FILE,LABELNO)
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