1 /* Definitions of target machine for GCC,
2 for ARM with targetting the VXWorks run time environment.
3 Copyright (C) 1999, 2000, 2003, 2004, 2007, 2008
4 Free Software Foundation, Inc.
6 Contributed by: Mike Stump <mrs@wrs.com>
7 Brought up to date by CodeSourcery, LLC.
9 This file is part of GCC.
11 GCC is free software; you can redistribute it and/or modify
12 it under the terms of the GNU General Public License as published by
13 the Free Software Foundation; either version 3, or (at your option)
16 GCC is distributed in the hope that it will be useful,
17 but WITHOUT ANY WARRANTY; without even the implied warranty of
18 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19 GNU General Public License for more details.
21 You should have received a copy of the GNU General Public License
22 along with GCC; see the file COPYING3. If not see
23 <http://www.gnu.org/licenses/>. */
26 #define TARGET_OS_CPP_BUILTINS() \
29 builtin_define ("ARMEB"); \
31 builtin_define ("ARMEL"); \
33 if (arm_arch_xscale) \
34 builtin_define ("CPU=XSCALE"); \
36 builtin_define ("CPU=ARMARCH5"); \
40 builtin_define ("CPU=ARMARCH4_T"); \
42 builtin_define ("CPU=ARMARCH4"); \
44 VXWORKS_OS_CPP_BUILTINS (); \
47 #undef OVERRIDE_OPTIONS
48 #define OVERRIDE_OPTIONS \
51 VXWORKS_OVERRIDE_OPTIONS; \
52 arm_override_options (); \
56 /* Subsume the arm/elf.h definition, and add RTP hooks. */
57 #undef SUBTARGET_CPP_SPEC
58 #define SUBTARGET_CPP_SPEC "-D__ELF__" VXWORKS_ADDITIONAL_CPP_SPEC
62 "%{tstrongarm:-mlittle-endian -mcpu=strongarm ; \
63 t4: -mlittle-endian -march=armv4 ; \
64 t4be: -mbig-endian -march=armv4 ; \
65 t4t: -mthumb -mthumb-interwork -mlittle-endian -march=armv4t ; \
66 t4tbe: -mthumb -mthumb-interwork -mbig-endian -march=armv4t ; \
67 t5: -mlittle-endian -march=armv5 ; \
68 t5be: -mbig-endian -march=armv5 ; \
69 t5t: -mthumb -mthumb-interwork -mlittle-endian -march=armv5 ; \
70 t5tbe: -mthumb -mthumb-interwork -mbig-endian -march=armv5 ; \
71 txscale: -mlittle-endian -mcpu=xscale ; \
72 txscalebe: -mbig-endian -mcpu=xscale ; \
75 /* Pass -EB for big-endian targets. */
76 #define VXWORKS_ENDIAN_SPEC \
77 "%{mbig-endian|t4be|t4tbe|t5be|t5tbe|txscalebe:-EB}"
79 #undef SUBTARGET_EXTRA_ASM_SPEC
80 #define SUBTARGET_EXTRA_ASM_SPEC VXWORKS_ENDIAN_SPEC
83 #define LINK_SPEC VXWORKS_LINK_SPEC " " VXWORKS_ENDIAN_SPEC
86 #define LIB_SPEC VXWORKS_LIB_SPEC
89 #define STARTFILE_SPEC VXWORKS_STARTFILE_SPEC
92 #define ENDFILE_SPEC VXWORKS_ENDFILE_SPEC
95 #define TARGET_VERSION fputs (" (ARM/VxWorks)", stderr);
97 /* There is no default multilib. */
98 #undef MULTILIB_DEFAULTS
100 #define FPUTYPE_DEFAULT "vfp"
102 #undef FUNCTION_PROFILER
103 #define FUNCTION_PROFILER VXWORKS_FUNCTION_PROFILER
105 /* We want to be compatible with a version of "2.96" at one point in
106 the past before this macro was changed. */
107 #undef DEFAULT_STRUCTURE_SIZE_BOUNDARY
108 #define DEFAULT_STRUCTURE_SIZE_BOUNDARY 8
110 /* The kernel loader does not allow relocations to overflow, so we
111 cannot allow arbitrary relocation addends in kernel modules or RTP
112 executables. Also, the dynamic loader uses the resolved relocation
113 value to distinguish references to the text and data segments, so we
114 cannot allow arbitrary offsets for shared libraries either. */
115 #undef ARM_OFFSETS_MUST_BE_WITHIN_SECTIONS_P
116 #define ARM_OFFSETS_MUST_BE_WITHIN_SECTIONS_P 1
118 #undef TARGET_DEFAULT_WORD_RELOCATIONS
119 #define TARGET_DEFAULT_WORD_RELOCATIONS 1