1 /* Definitions for non-Linux based ARM systems using ELF
2 Copyright (C) 1998-2013 Free Software Foundation, Inc.
3 Contributed by Catherine Moore <clm@cygnus.com>
5 This file is part of GCC.
7 GCC is free software; you can redistribute it and/or modify it
8 under the terms of the GNU General Public License as published
9 by the Free Software Foundation; either version 3, or (at your
10 option) any later version.
12 GCC is distributed in the hope that it will be useful, but WITHOUT
13 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
14 or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public
15 License for more details.
17 You should have received a copy of the GNU General Public License
18 along with GCC; see the file COPYING3. If not see
19 <http://www.gnu.org/licenses/>. */
21 /* elfos.h should have already been included. Now just override
22 any conflicting definitions and add any extras. */
24 /* Run-time Target Specification. */
26 /* Default to using software floating point. */
27 #ifndef TARGET_DEFAULT
28 #define TARGET_DEFAULT (0)
31 /* Now we define the strings used to build the spec file. */
32 #define UNKNOWN_ELF_STARTFILE_SPEC " crti%O%s crtbegin%O%s crt0%O%s"
35 #define STARTFILE_SPEC UNKNOWN_ELF_STARTFILE_SPEC
37 #define UNKNOWN_ELF_ENDFILE_SPEC "crtend%O%s crtn%O%s"
40 #define ENDFILE_SPEC UNKNOWN_ELF_ENDFILE_SPEC
42 /* The __USES_INITFINI__ define is tested in newlib/libc/sys/arm/crt0.S
43 to see if it needs to invoked _init() and _fini(). */
44 #undef SUBTARGET_CPP_SPEC
45 #define SUBTARGET_CPP_SPEC "-D__USES_INITFINI__"
47 #undef PREFERRED_DEBUGGING_TYPE
48 #define PREFERRED_DEBUGGING_TYPE DWARF2_DEBUG
50 /* Return a nonzero value if DECL has a section attribute. */
51 #define IN_NAMED_SECTION_P(DECL) \
52 ((TREE_CODE (DECL) == FUNCTION_DECL || TREE_CODE (DECL) == VAR_DECL) \
53 && DECL_SECTION_NAME (DECL) != NULL_TREE)
55 #undef ASM_OUTPUT_ALIGNED_BSS
56 #define ASM_OUTPUT_ALIGNED_BSS(FILE, DECL, NAME, SIZE, ALIGN) \
59 if (IN_NAMED_SECTION_P (DECL)) \
60 switch_to_section (get_named_section (DECL, NULL, 0)); \
62 switch_to_section (bss_section); \
64 ASM_OUTPUT_ALIGN (FILE, floor_log2 (ALIGN / BITS_PER_UNIT)); \
66 last_assemble_variable_decl = DECL; \
67 ASM_DECLARE_OBJECT_NAME (FILE, NAME, DECL); \
68 ASM_OUTPUT_SKIP (FILE, SIZE ? (int)(SIZE) : 1); \
72 #undef ASM_OUTPUT_ALIGNED_DECL_LOCAL
73 #define ASM_OUTPUT_ALIGNED_DECL_LOCAL(FILE, DECL, NAME, SIZE, ALIGN) \
76 if ((DECL) != NULL && IN_NAMED_SECTION_P (DECL)) \
77 switch_to_section (get_named_section (DECL, NULL, 0)); \
79 switch_to_section (bss_section); \
81 ASM_OUTPUT_ALIGN (FILE, floor_log2 (ALIGN / BITS_PER_UNIT)); \
82 ASM_OUTPUT_LABEL (FILE, NAME); \
83 fprintf (FILE, "\t.space\t%d\n", SIZE ? (int)(SIZE) : 1); \
87 #ifndef SUBTARGET_CPU_DEFAULT
88 #define SUBTARGET_CPU_DEFAULT TARGET_CPU_arm7tdmi
91 /* The libgcc udivmod functions may throw exceptions. If newlib is
92 configured to support long longs in I/O, then printf will depend on
93 udivmoddi4, which will depend on the exception unwind routines,
94 which will depend on abort, which is defined in libc. */
95 #undef LINK_GCC_C_SEQUENCE_SPEC
96 #define LINK_GCC_C_SEQUENCE_SPEC "--start-group %G %L --end-group"