tc-sparc.h revision 89857
1/* tc-sparc.h - Macros and type defines for the sparc. 2 Copyright 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 3 1999, 2000, 2001 Free Software Foundation, Inc. 4 5 This file is part of GAS, the GNU Assembler. 6 7 GAS is free software; you can redistribute it and/or modify 8 it under the terms of the GNU General Public License as 9 published by the Free Software Foundation; either version 2, 10 or (at your option) any later version. 11 12 GAS is distributed in the hope that it will be useful, but 13 WITHOUT ANY WARRANTY; without even the implied warranty of 14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See 15 the GNU General Public License for more details. 16 17 You should have received a copy of the GNU General Public 18 License along with GAS; see the file COPYING. If not, write 19 to the Free Software Foundation, 59 Temple Place - Suite 330, 20 Boston, MA 02111-1307, USA. */ 21 22#ifndef TC_SPARC 23#define TC_SPARC 1 24 25#ifdef ANSI_PROTOTYPES 26struct frag; 27#endif 28 29/* This is used to set the default value for `target_big_endian'. */ 30#define TARGET_BYTES_BIG_ENDIAN 1 31 32#define LOCAL_LABELS_FB 1 33 34#define TARGET_ARCH bfd_arch_sparc 35 36extern const char *sparc_target_format PARAMS ((void)); 37#define TARGET_FORMAT sparc_target_format () 38 39#define RELOC_EXPANSION_POSSIBLE 40#define MAX_RELOC_EXPANSION 2 41 42#if 0 43#ifdef TE_SPARCAOUT 44/* Bi-endian support may eventually be unconditional, but until things are 45 working well it's only provided for targets that need it. */ 46#define SPARC_BIENDIAN 47#endif 48#endif 49/* Make it unconditional and check if -EL is valid after option parsing */ 50#define SPARC_BIENDIAN 51 52#define WORKING_DOT_WORD 53 54#define md_convert_frag(b,s,f) \ 55 as_fatal (_("sparc convert_frag\n")) 56#define md_estimate_size_before_relax(f,s) \ 57 (as_fatal (_("estimate_size_before_relax called")), 1) 58 59#define LISTING_HEADER "SPARC GAS " 60 61extern int sparc_pic_code; 62 63/* We require .word, et. al., to be aligned correctly. */ 64#define md_cons_align(nbytes) sparc_cons_align (nbytes) 65extern void sparc_cons_align PARAMS ((int)); 66 67#define HANDLE_ALIGN(fragp) sparc_handle_align (fragp) 68extern void sparc_handle_align PARAMS ((struct frag *)); 69 70#define MAX_MEM_FOR_RS_ALIGN_CODE (3 + 4 + 4) 71 72#if defined (OBJ_ELF) || defined (OBJ_AOUT) 73 74/* This expression evaluates to false if the relocation is for a local 75 object for which we still want to do the relocation at runtime. 76 True if we are willing to perform this relocation while building 77 the .o file. 78 79 If the reloc is against an externally visible symbol, then the 80 a.out assembler should not do the relocation if generating PIC, and 81 the ELF assembler should never do the relocation. */ 82 83#ifdef OBJ_ELF 84#define obj_relocate_extern 0 85#else 86#define obj_relocate_extern (! sparc_pic_code) 87#endif 88 89#define TC_RELOC_RTSYM_LOC_FIXUP(FIX) \ 90 (obj_relocate_extern \ 91 || (FIX)->fx_addsy == NULL \ 92 || (! S_IS_EXTERNAL ((FIX)->fx_addsy) \ 93 && ! S_IS_WEAK ((FIX)->fx_addsy) \ 94 && S_IS_DEFINED ((FIX)->fx_addsy) \ 95 && ! S_IS_COMMON ((FIX)->fx_addsy))) 96#endif 97 98/* I know that "call 0" fails in sparc-coff if this doesn't return 1. I 99 don't know about other relocation types, or other formats, yet. */ 100#ifdef OBJ_COFF 101#define TC_FORCE_RELOCATION(FIXP) \ 102 ((FIXP)->fx_r_type == BFD_RELOC_32_PCREL_S2 \ 103 && ((FIXP)->fx_addsy == 0 \ 104 || S_GET_SEGMENT ((FIXP)->fx_addsy) == absolute_section)) 105#define RELOC_REQUIRES_SYMBOL 106#endif 107 108#ifdef OBJ_ELF 109#define TC_FORCE_RELOCATION(fixp) elf32_sparc_force_relocation(fixp) 110extern int elf32_sparc_force_relocation PARAMS ((struct fix *)); 111#endif 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. The PIC part of this test must be 118 parallel to the code in tc_gen_reloc which converts relocations to 119 GOT relocations. */ 120#define tc_fix_adjustable(FIX) \ 121 (! S_IS_EXTERNAL ((FIX)->fx_addsy) \ 122 && ! S_IS_WEAK ((FIX)->fx_addsy) \ 123 && (FIX)->fx_r_type != BFD_RELOC_VTABLE_INHERIT \ 124 && (FIX)->fx_r_type != BFD_RELOC_VTABLE_ENTRY \ 125 && (! sparc_pic_code \ 126 || ((FIX)->fx_r_type != BFD_RELOC_HI22 \ 127 && (FIX)->fx_r_type != BFD_RELOC_LO10 \ 128 && (FIX)->fx_r_type != BFD_RELOC_SPARC13 \ 129 && ((FIX)->fx_r_type != BFD_RELOC_32_PCREL_S2 \ 130 || (S_IS_DEFINED ((FIX)->fx_addsy) \ 131 && ! S_IS_COMMON ((FIX)->fx_addsy) \ 132 && ! S_IS_EXTERNAL ((FIX)->fx_addsy) \ 133 && ! S_IS_WEAK ((FIX)->fx_addsy))) \ 134 && ((FIX)->fx_pcrel \ 135 || ((FIX)->fx_subsy != NULL \ 136 && (S_GET_SEGMENT ((FIX)->fx_subsy) \ 137 == S_GET_SEGMENT ((FIX)->fx_addsy))) \ 138 || S_IS_LOCAL ((FIX)->fx_addsy))))) 139 140/* Finish up the entire symtab. */ 141#define tc_adjust_symtab() sparc_adjust_symtab () 142extern void sparc_adjust_symtab PARAMS ((void)); 143#endif 144 145#ifdef OBJ_AOUT 146/* When generating PIC code, we must not adjust any reloc which will 147 turn into a reloc against the global offset table, nor any reloc 148 which we will need if a symbol is overridden. */ 149#define tc_fix_adjustable(FIX) \ 150 (! sparc_pic_code \ 151 || ((FIX)->fx_pcrel \ 152 && ((FIX)->fx_addsy == NULL \ 153 || (! S_IS_EXTERNAL ((FIX)->fx_addsy) \ 154 && ! S_IS_WEAK ((FIX)->fx_addsy)))) \ 155 || (FIX)->fx_r_type == BFD_RELOC_16 \ 156 || (FIX)->fx_r_type == BFD_RELOC_32) 157#endif 158 159#define elf_tc_final_processing sparc_elf_final_processing 160extern void sparc_elf_final_processing PARAMS ((void)); 161 162#define md_operand(x) 163 164extern void sparc_md_end PARAMS ((void)); 165#define md_end() sparc_md_end () 166 167#endif 168 169#ifdef OBJ_ELF 170#define TC_PARSE_CONS_EXPRESSION(EXP, NBYTES) sparc_cons (EXP, NBYTES) 171extern void sparc_cons PARAMS ((expressionS *, int)); 172#endif 173 174#define TC_CONS_FIX_NEW cons_fix_new_sparc 175extern void cons_fix_new_sparc 176 PARAMS ((struct frag *, int, unsigned int, struct expressionS *)); 177 178#define TC_FIX_TYPE valueT 179 180#define TC_INIT_FIX_DATA(X) \ 181 do \ 182 { \ 183 (X)->tc_fix_data = 0; \ 184 } \ 185 while (0) 186 187#define TC_FIX_DATA_PRINT(FILE, FIXP) \ 188 do \ 189 { \ 190 fprintf ((FILE), "addend2=%ld\n", \ 191 (unsigned long) (FIXP)->tc_fix_data); \ 192 } \ 193 while (0) 194 195#define DWARF2_LINE_MIN_INSN_LENGTH 4 196 197/* end of tc-sparc.h */ 198