1 /* Definitions for non-Linux based ARM systems using ELF 2 Copyright (C) 1998, 1999, 2000, 2001, 2002, 2003, 2004 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 2, 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 this program; see the file COPYING. If not, write to 20 the Free Software Foundation, 51 Franklin Street, Fifth Floor, 21 Boston, MA 02110-1301, USA. */ 22 23 /* elfos.h should have already been included. Now just override 24 any conflicting definitions and add any extras. */ 25 26 /* Run-time Target Specification. */ 27 #ifndef TARGET_VERSION 28 #define TARGET_VERSION fputs (" (ARM/ELF)", stderr); 29 #endif 30 31 /* Default to using software floating point. */ 32 #ifndef TARGET_DEFAULT 33 #define TARGET_DEFAULT (0) 34 #endif 35 36 /* Now we define the strings used to build the spec file. */ 37 #undef STARTFILE_SPEC 38 #define STARTFILE_SPEC " crti%O%s crtbegin%O%s crt0%O%s" 39 40 #undef ENDFILE_SPEC 41 #define ENDFILE_SPEC "crtend%O%s crtn%O%s" 42 43 /* The __USES_INITFINI__ define is tested in newlib/libc/sys/arm/crt0.S 44 to see if it needs to invoked _init() and _fini(). */ 45 #undef SUBTARGET_CPP_SPEC 46 #define SUBTARGET_CPP_SPEC "-D__USES_INITFINI__" 47 48 #undef PREFERRED_DEBUGGING_TYPE 49 #define PREFERRED_DEBUGGING_TYPE DWARF2_DEBUG 50 51 /* Return a nonzero value if DECL has a section attribute. */ 52 #define IN_NAMED_SECTION(DECL) \ 53 ((TREE_CODE (DECL) == FUNCTION_DECL || TREE_CODE (DECL) == VAR_DECL) \ 54 && DECL_SECTION_NAME (DECL) != NULL_TREE) 55 56 #undef ASM_OUTPUT_ALIGNED_BSS 57 #define ASM_OUTPUT_ALIGNED_BSS(FILE, DECL, NAME, SIZE, ALIGN) \ 58 do \ 59 { \ 60 if (IN_NAMED_SECTION (DECL)) \ 61 switch_to_section (get_named_section (DECL, NULL, 0)); \ 62 else \ 63 switch_to_section (bss_section); \ 64 \ 65 ASM_OUTPUT_ALIGN (FILE, floor_log2 (ALIGN / BITS_PER_UNIT)); \ 66 \ 67 last_assemble_variable_decl = DECL; \ 68 ASM_DECLARE_OBJECT_NAME (FILE, NAME, DECL); \ 69 ASM_OUTPUT_SKIP (FILE, SIZE ? (int)(SIZE) : 1); \ 70 } \ 71 while (0) 72 73 #undef ASM_OUTPUT_ALIGNED_DECL_LOCAL 74 #define ASM_OUTPUT_ALIGNED_DECL_LOCAL(FILE, DECL, NAME, SIZE, ALIGN) \ 75 do \ 76 { \ 77 if ((DECL) != NULL && IN_NAMED_SECTION (DECL)) \ 78 switch_to_section (get_named_section (DECL, NULL, 0)); \ 79 else \ 80 switch_to_section (bss_section); \ 81 \ 82 ASM_OUTPUT_ALIGN (FILE, floor_log2 (ALIGN / BITS_PER_UNIT)); \ 83 ASM_OUTPUT_LABEL (FILE, NAME); \ 84 fprintf (FILE, "\t.space\t%d\n", SIZE ? (int)(SIZE) : 1); \ 85 } \ 86 while (0) 87 88 #ifndef SUBTARGET_CPU_DEFAULT 89 #define SUBTARGET_CPU_DEFAULT TARGET_CPU_arm7tdmi 90 #endif 91 92 /* The libgcc udivmod functions may throw exceptions. If newlib is 93 configured to support long longs in I/O, then printf will depend on 94 udivmoddi4, which will depend on the exception unwind routines, 95 which will depend on abort, which is defined in libc. */ 96 #undef LINK_GCC_C_SEQUENCE_SPEC 97 #define LINK_GCC_C_SEQUENCE_SPEC "--start-group %G %L --end-group" 98