1 /* tc-sparc.h - Macros and type defines for the sparc. 2 Copyright (C) 1989, 90-95, 1996 Free Software Foundation, Inc. 3 4 This file is part of GAS, the GNU Assembler. 5 6 GAS is free software; you can redistribute it and/or modify 7 it under the terms of the GNU General Public License as 8 published by the Free Software Foundation; either version 2, 9 or (at your option) any later version. 10 11 GAS is distributed in the hope that it will be useful, but 12 WITHOUT ANY WARRANTY; without even the implied warranty of 13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See 14 the GNU General Public License for more details. 15 16 You should have received a copy of the GNU General Public 17 License along with GAS; see the file COPYING. If not, write 18 to the Free Software Foundation, 59 Temple Place - Suite 330, 19 Boston, MA 02111-1307, USA. */ 20 21 #define TC_SPARC 1 22 23 #define LOCAL_LABELS_FB 1 24 25 #define TARGET_ARCH bfd_arch_sparc 26 27 /* This is used to set the default value for `target_big_endian'. */ 28 #define TARGET_BYTES_BIG_ENDIAN 1 29 30 #ifdef OBJ_AOUT 31 #ifdef TE_NetBSD 32 #define TARGET_FORMAT "a.out-sparc-netbsd" 33 #else 34 #ifdef TE_SPARCAOUT 35 extern int target_big_endian; 36 #define TARGET_FORMAT (target_big_endian ? "a.out-sunos-big" : "a.out-sparc-little") 37 /* Bi-endian support may eventually be unconditional, but until things are 38 working well it's only provided for targets that need it. */ 39 #define SPARC_BIENDIAN 40 #else 41 #define TARGET_FORMAT "a.out-sunos-big" 42 #endif 43 #endif 44 #endif 45 #ifdef OBJ_BOUT 46 #define TARGET_FORMAT "b.out.big" 47 #endif 48 #ifdef OBJ_ELF 49 #ifdef SPARC_ARCH64 50 #define TARGET_FORMAT "elf64-sparc" 51 #else 52 #define TARGET_FORMAT "elf32-sparc" 53 #endif 54 #define LOCAL_LABEL(name) (((name)[0] == '.' && (name)[1] == 'L') || !strncmp ((name), "_.L_", 4)) 55 #endif 56 #define WORKING_DOT_WORD 57 58 #define md_convert_frag(b,s,f) {as_fatal ("sparc convert_frag\n");} 59 #define md_create_long_jump(p,f,t,fr,s) as_fatal("sparc_create_long_jump") 60 #define md_create_short_jump(p,f,t,fr,s) as_fatal("sparc_create_short_jump") 61 #define md_estimate_size_before_relax(f,s) \ 62 (as_fatal("estimate_size_before_relax called"),1) 63 void tc_aout_pre_write_hook (); 64 65 #define LISTING_HEADER "SPARC GAS " 66 67 extern int sparc_pic_code; 68 69 /* We require .word, et. al., to be aligned correctly. */ 70 #define md_cons_align(nbytes) sparc_cons_align (nbytes) 71 extern void sparc_cons_align PARAMS ((int)); 72 #define HANDLE_ALIGN(fragp) sparc_handle_align (fragp) 73 extern void sparc_handle_align (); 74 75 #if defined (OBJ_ELF) || defined (OBJ_AOUT) 76 77 /* This expression evaluates to false if the relocation is for a local 78 object for which we still want to do the relocation at runtime. 79 True if we are willing to perform this relocation while building 80 the .o file. 81 82 If the reloc is against an externally visible symbol, then the 83 a.out assembler should not do the relocation if generating PIC, and 84 the ELF assembler should never do the relocation. */ 85 86 #ifdef OBJ_ELF 87 #define obj_relocate_extern 0 88 #else 89 #define obj_relocate_extern (! sparc_pic_code) 90 #endif 91 92 #define TC_RELOC_RTSYM_LOC_FIXUP(FIX) \ 93 (obj_relocate_extern \ 94 || (FIX)->fx_addsy == NULL \ 95 || (! S_IS_EXTERNAL ((FIX)->fx_addsy) \ 96 && ! S_IS_WEAK ((FIX)->fx_addsy) \ 97 && S_IS_DEFINED ((FIX)->fx_addsy) \ 98 && ! S_IS_COMMON ((FIX)->fx_addsy))) 99 #endif 100 101 /* I know that "call 0" fails in sparc-coff if this doesn't return 1. I 102 don't know about other relocation types, or other formats, yet. */ 103 #ifdef OBJ_COFF 104 #define TC_FORCE_RELOCATION(FIXP) \ 105 ((FIXP)->fx_r_type == BFD_RELOC_32_PCREL_S2 \ 106 && ((FIXP)->fx_addsy == 0 \ 107 || S_GET_SEGMENT ((FIXP)->fx_addsy) == absolute_section)) 108 #define RELOC_REQUIRES_SYMBOL 109 #endif 110 111 #define TC_HANDLES_FX_DONE 112 113 #ifdef OBJ_ELF 114 /* Keep relocations against global symbols. Don't turn them into 115 relocations against sections. This is required for the dynamic 116 linker to operate properly. When generating PIC, we need to keep 117 any non PC relative reloc. */ 118 #define tc_fix_adjustable(FIX) \ 119 (! S_IS_EXTERNAL ((FIX)->fx_addsy) \ 120 && ! S_IS_WEAK ((FIX)->fx_addsy) \ 121 && (! sparc_pic_code \ 122 || (FIX)->fx_pcrel \ 123 || ((FIX)->fx_subsy != NULL \ 124 && (S_GET_SEGMENT ((FIX)->fx_subsy) \ 125 == S_GET_SEGMENT ((FIX)->fx_addsy))))) 126 #endif 127 128 #ifdef OBJ_AOUT 129 /* When generating PIC code, we must not adjust any reloc which will 130 turn into a reloc against the global offset table. */ 131 #define tc_fix_adjustable(FIX) \ 132 (! sparc_pic_code \ 133 || (FIX)->fx_pcrel \ 134 || (FIX)->fx_r_type == BFD_RELOC_16 \ 135 || (FIX)->fx_r_type == BFD_RELOC_32) 136 #endif 137 138 #define md_operand(x) 139 140 extern void sparc_md_end PARAMS ((void)); 141 #define md_end() sparc_md_end () 142 143 /* end of tc-sparc.h */ 144