1 /* Definitions of target machine for GNU compiler. Vxworks PowerPC version.
2 Copyright (C) 1996, 2000, 2002, 2003, 2004, 2005, 2007
3 Free Software Foundation, Inc.
4 Contributed by CodeSourcery, LLC.
6 This file is part of GCC.
8 GCC is free software; you can redistribute it and/or modify it under
9 the terms of the GNU General Public License as published by the Free
10 Software Foundation; either version 3, or (at your option) any later
13 GCC is distributed in the hope that it will be useful, but WITHOUT ANY
14 WARRANTY; without even the implied warranty of MERCHANTABILITY or
15 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
18 You should have received a copy of the GNU General Public License
19 along with GCC; see the file COPYING3. If not see
20 <http://www.gnu.org/licenses/>. */
22 /* Note to future editors: VxWorks is mostly an EABI target. We do
23 not use rs6000/eabi.h because we would have to override most of
24 it anyway. However, if you change that file, consider making
25 analogous changes here too. */
28 #define TARGET_VERSION fprintf (stderr, " (PowerPC VxWorks)");
30 /* CPP predefined macros. */
32 #undef TARGET_OS_CPP_BUILTINS
33 #define TARGET_OS_CPP_BUILTINS() \
36 builtin_define ("__ppc"); \
37 builtin_define ("__EABI__"); \
38 builtin_define ("__ELF__"); \
39 builtin_define ("__vxworks"); \
40 builtin_define ("__VXWORKS__"); \
41 if (!TARGET_SOFT_FLOAT) \
42 builtin_define ("__hardfp"); \
44 /* C89 namespace violation! */ \
45 builtin_define ("CPU_FAMILY=PPC"); \
49 /* Only big endian PPC is supported by VxWorks. */
50 #undef BYTES_BIG_ENDIAN
51 #define BYTES_BIG_ENDIAN 1
53 /* We have to kill off the entire specs set created by rs6000/sysv4.h
54 and substitute our own set. The top level vxworks.h has done some
57 #undef SUBTARGET_EXTRA_SPECS
62 #define SUBTARGET_EXTRA_SPECS /* none needed */
64 /* FIXME: The only reason we allow no -mcpu switch at all is because
65 config-ml.in insists on a "." multilib. */
68 %{mcpu=403 : -DCPU=PPC403 ; \
69 mcpu=405 : -DCPU=PPC405 ; \
70 mcpu=440 : -DCPU=PPC440 ; \
71 mcpu=603 : -DCPU=PPC603 ; \
72 mcpu=604 : -DCPU=PPC604 ; \
73 mcpu=860 : -DCPU=PPC860 ; \
74 mcpu=8540: -DCPU=PPC85XX ; \
76 VXWORKS_ADDITIONAL_CPP_SPEC
79 "%{G*} %{mno-sdata:-msdata=none} %{msdata:-msdata=default} \
80 %{mlittle|mlittle-endian:-mstrict-align} \
82 %{fvec:-maltivec} %{fvec-eabi:-maltivec -mabi=altivec}"
86 %{,assembler|,assembler-with-cpp: %{mregnames} %{mno-regnames}} \
87 %{v:-v} %{Qy:} %{!Qn:-Qy} %{n} %{T} %{Ym,*} %{Yd,*} %{Wa,*:%*} \
88 %{mrelocatable} %{mrelocatable-lib} %{fpic:-K PIC} %{fPIC:-K PIC} -mbig"
91 #define LIB_SPEC VXWORKS_LIB_SPEC
93 #define LINK_SPEC VXWORKS_LINK_SPEC
95 #define STARTFILE_SPEC VXWORKS_STARTFILE_SPEC
97 #define ENDFILE_SPEC VXWORKS_ENDFILE_SPEC
99 /* There is no default multilib. */
100 #undef MULTILIB_DEFAULTS
102 #undef TARGET_DEFAULT
103 #define TARGET_DEFAULT \
104 (MASK_POWERPC | MASK_NEW_MNEMONICS | MASK_EABI | MASK_STRICT_ALIGN)
106 #undef PROCESSOR_DEFAULT
107 #define PROCESSOR_DEFAULT PROCESSOR_PPC604
109 /* Nor sdata, for kernel mode. We use this in
110 SUBSUBTARGET_INITIALIZE_OPTIONS, after rs6000_rtp has been initialized. */
111 #undef SDATA_DEFAULT_SIZE
112 #define SDATA_DEFAULT_SIZE (TARGET_VXWORKS_RTP ? 8 : 0)
114 #undef STACK_BOUNDARY
115 #define STACK_BOUNDARY (16*BITS_PER_UNIT)
116 /* Override sysv4.h, reset to the default. */
117 #undef PREFERRED_STACK_BOUNDARY
119 /* Make -mcpu=8540 imply SPE. ISEL is automatically enabled, the
120 others must be done by hand. Handle -mrtp. Disable -fPIC
121 for -mrtp - the VxWorks PIC model is not compatible with it. */
122 #undef SUBSUBTARGET_OVERRIDE_OPTIONS
123 #define SUBSUBTARGET_OVERRIDE_OPTIONS \
128 rs6000_spe_abi = 1; \
129 rs6000_float_gprs = 1; \
133 g_switch_value = SDATA_DEFAULT_SIZE; \
134 VXWORKS_OVERRIDE_OPTIONS; \
137 /* No _mcount profiling on VxWorks. */
138 #undef FUNCTION_PROFILER
139 #define FUNCTION_PROFILER(FILE,LABELNO) VXWORKS_FUNCTION_PROFILER(FILE,LABELNO)