1 /* Definitions for non-Linux based ARM systems using ELF 2 Copyright (C) 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2007, 2008 3 Free Software Foundation, Inc. 4 Contributed by Catherine Moore <clm@cygnus.com> 5 6 This file is part of GCC. 7 8 GCC is free software; you can redistribute it and/or modify it 9 under the terms of the GNU General Public License as published 10 by the Free Software Foundation; either version 3, or (at your 11 option) any later version. 12 13 GCC is distributed in the hope that it will be useful, but WITHOUT 14 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY 15 or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public 16 License for more details. 17 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/>. */ 21 22 /* elfos.h should have already been included. Now just override 23 any conflicting definitions and add any extras. */ 24 25 /* Run-time Target Specification. */ 26 #ifndef TARGET_VERSION 27 #define TARGET_VERSION fputs (" (ARM/ELF)", stderr); 28 #endif 29 30 /* Default to using software floating point. */ 31 #ifndef TARGET_DEFAULT 32 #define TARGET_DEFAULT (0) 33 #endif 34 35 /* Now we define the strings used to build the spec file. */ 36 #define UNKNOWN_ELF_STARTFILE_SPEC " crti%O%s crtbegin%O%s crt0%O%s" 37 38 #undef STARTFILE_SPEC 39 #define STARTFILE_SPEC UNKNOWN_ELF_STARTFILE_SPEC 40 41 #define UNKNOWN_ELF_ENDFILE_SPEC "crtend%O%s crtn%O%s" 42 43 #undef ENDFILE_SPEC 44 #define ENDFILE_SPEC UNKNOWN_ELF_ENDFILE_SPEC 45 46 /* The __USES_INITFINI__ define is tested in newlib/libc/sys/arm/crt0.S 47 to see if it needs to invoked _init() and _fini(). */ 48 #undef SUBTARGET_CPP_SPEC 49 #define SUBTARGET_CPP_SPEC "-D__USES_INITFINI__" 50 51 #undef PREFERRED_DEBUGGING_TYPE 52 #define PREFERRED_DEBUGGING_TYPE DWARF2_DEBUG 53 54 /* Return a nonzero value if DECL has a section attribute. */ 55 #define IN_NAMED_SECTION(DECL) \ 56 ((TREE_CODE (DECL) == FUNCTION_DECL || TREE_CODE (DECL) == VAR_DECL) \ 57 && DECL_SECTION_NAME (DECL) != NULL_TREE) 58 59 #undef ASM_OUTPUT_ALIGNED_BSS 60 #define ASM_OUTPUT_ALIGNED_BSS(FILE, DECL, NAME, SIZE, ALIGN) \ 61 do \ 62 { \ 63 if (IN_NAMED_SECTION (DECL)) \ 64 switch_to_section (get_named_section (DECL, NULL, 0)); \ 65 else \ 66 switch_to_section (bss_section); \ 67 \ 68 ASM_OUTPUT_ALIGN (FILE, floor_log2 (ALIGN / BITS_PER_UNIT)); \ 69 \ 70 last_assemble_variable_decl = DECL; \ 71 ASM_DECLARE_OBJECT_NAME (FILE, NAME, DECL); \ 72 ASM_OUTPUT_SKIP (FILE, SIZE ? (int)(SIZE) : 1); \ 73 } \ 74 while (0) 75 76 #undef ASM_OUTPUT_ALIGNED_DECL_LOCAL 77 #define ASM_OUTPUT_ALIGNED_DECL_LOCAL(FILE, DECL, NAME, SIZE, ALIGN) \ 78 do \ 79 { \ 80 if ((DECL) != NULL && IN_NAMED_SECTION (DECL)) \ 81 switch_to_section (get_named_section (DECL, NULL, 0)); \ 82 else \ 83 switch_to_section (bss_section); \ 84 \ 85 ASM_OUTPUT_ALIGN (FILE, floor_log2 (ALIGN / BITS_PER_UNIT)); \ 86 ASM_OUTPUT_LABEL (FILE, NAME); \ 87 fprintf (FILE, "\t.space\t%d\n", SIZE ? (int)(SIZE) : 1); \ 88 } \ 89 while (0) 90 91 #ifndef SUBTARGET_CPU_DEFAULT 92 #define SUBTARGET_CPU_DEFAULT TARGET_CPU_arm7tdmi 93 #endif 94 95 /* The libgcc udivmod functions may throw exceptions. If newlib is 96 configured to support long longs in I/O, then printf will depend on 97 udivmoddi4, which will depend on the exception unwind routines, 98 which will depend on abort, which is defined in libc. */ 99 #undef LINK_GCC_C_SEQUENCE_SPEC 100 #define LINK_GCC_C_SEQUENCE_SPEC "--start-group %G %L --end-group" 101