| /* 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:-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) |