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> 4 5 This file is part of GCC. 6 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. 11 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. 16 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/>. */ 20 21/* elfos.h should have already been included. Now just override 22 any conflicting definitions and add any extras. */ 23 24/* Run-time Target Specification. */ 25 26/* Default to using software floating point. */ 27#ifndef TARGET_DEFAULT 28#define TARGET_DEFAULT (0) 29#endif 30 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" 33 34#undef STARTFILE_SPEC 35#define STARTFILE_SPEC UNKNOWN_ELF_STARTFILE_SPEC 36 37#define UNKNOWN_ELF_ENDFILE_SPEC "crtend%O%s crtn%O%s" 38 39#undef ENDFILE_SPEC 40#define ENDFILE_SPEC UNKNOWN_ELF_ENDFILE_SPEC 41 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__" 46 47#undef PREFERRED_DEBUGGING_TYPE 48#define PREFERRED_DEBUGGING_TYPE DWARF2_DEBUG 49 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) 54 55#undef ASM_OUTPUT_ALIGNED_BSS 56#define ASM_OUTPUT_ALIGNED_BSS(FILE, DECL, NAME, SIZE, ALIGN) \ 57 do \ 58 { \ 59 if (IN_NAMED_SECTION_P (DECL)) \ 60 switch_to_section (get_named_section (DECL, NULL, 0)); \ 61 else \ 62 switch_to_section (bss_section); \ 63 \ 64 ASM_OUTPUT_ALIGN (FILE, floor_log2 (ALIGN / BITS_PER_UNIT)); \ 65 \ 66 last_assemble_variable_decl = DECL; \ 67 ASM_DECLARE_OBJECT_NAME (FILE, NAME, DECL); \ 68 ASM_OUTPUT_SKIP (FILE, SIZE ? (int)(SIZE) : 1); \ 69 } \ 70 while (0) 71 72#undef ASM_OUTPUT_ALIGNED_DECL_LOCAL 73#define ASM_OUTPUT_ALIGNED_DECL_LOCAL(FILE, DECL, NAME, SIZE, ALIGN) \ 74 do \ 75 { \ 76 if ((DECL) != NULL && IN_NAMED_SECTION_P (DECL)) \ 77 switch_to_section (get_named_section (DECL, NULL, 0)); \ 78 else \ 79 switch_to_section (bss_section); \ 80 \ 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); \ 84 } \ 85 while (0) 86 87#ifndef SUBTARGET_CPU_DEFAULT 88#define SUBTARGET_CPU_DEFAULT TARGET_CPU_arm7tdmi 89#endif 90 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" 97