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Diffstat (limited to 'gcc-4.9/gcc/config/rs6000/vxworks.h')
| -rw-r--r-- | gcc-4.9/gcc/config/rs6000/vxworks.h | 133 |
1 files changed, 133 insertions, 0 deletions
diff --git a/gcc-4.9/gcc/config/rs6000/vxworks.h b/gcc-4.9/gcc/config/rs6000/vxworks.h new file mode 100644 index 000000000..7b4e9b9eb --- /dev/null +++ b/gcc-4.9/gcc/config/rs6000/vxworks.h @@ -0,0 +1,133 @@ +/* Definitions of target machine for GNU compiler. Vxworks PowerPC version. + Copyright (C) 1996-2014 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/>. */ + +/* 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 */ + +/* 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 ; \ + : -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:-K PIC} %{fPIC:-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) |