tc-sparc.h revision 60484
1/* tc-sparc.h - Macros and type defines for the sparc. 2 Copyright (C) 1989, 90-96, 97, 98, 1999 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#ifndef TC_SPARC 22#define TC_SPARC 1 23 24#ifdef ANSI_PROTOTYPES 25struct frag; 26#endif 27 28/* This is used to set the default value for `target_big_endian'. */ 29#define TARGET_BYTES_BIG_ENDIAN 1 30 31#define LOCAL_LABELS_FB 1 32 33#define TARGET_ARCH bfd_arch_sparc 34 35extern const char *sparc_target_format PARAMS ((void)); 36#define TARGET_FORMAT sparc_target_format () 37 38#define RELOC_EXPANSION_POSSIBLE 39#define MAX_RELOC_EXPANSION 2 40 41#if 0 42#ifdef TE_SPARCAOUT 43/* Bi-endian support may eventually be unconditional, but until things are 44 working well it's only provided for targets that need it. */ 45#define SPARC_BIENDIAN 46#endif 47#endif 48/* Make it unconditional and check if -EL is valid after option parsing */ 49#define SPARC_BIENDIAN 50 51#define WORKING_DOT_WORD 52 53#define md_convert_frag(b,s,f) {as_fatal (_("sparc convert_frag\n"));} 54#define md_estimate_size_before_relax(f,s) \ 55 (as_fatal(_("estimate_size_before_relax called")),1) 56 57#define LISTING_HEADER "SPARC GAS " 58 59extern int sparc_pic_code; 60 61#define md_do_align(n, fill, len, max, around) \ 62if ((n) && (n) <= 10 && !need_pass_2 && !(fill) \ 63 && subseg_text_p (now_seg)) \ 64 { \ 65 char *p; \ 66 p = frag_var (rs_align_code, 1 << n, 1, (relax_substateT) 1024, \ 67 (symbolS *) 0, (offsetT) (n), (char *) 0); \ 68 *p = 0x00; \ 69 goto around; \ 70 } 71 72/* We require .word, et. al., to be aligned correctly. */ 73#define md_cons_align(nbytes) sparc_cons_align (nbytes) 74extern void sparc_cons_align PARAMS ((int)); 75#define HANDLE_ALIGN(fragp) sparc_handle_align (fragp) 76extern void sparc_handle_align PARAMS ((struct frag *)); 77 78#if defined (OBJ_ELF) || defined (OBJ_AOUT) 79 80/* This expression evaluates to false if the relocation is for a local 81 object for which we still want to do the relocation at runtime. 82 True if we are willing to perform this relocation while building 83 the .o file. 84 85 If the reloc is against an externally visible symbol, then the 86 a.out assembler should not do the relocation if generating PIC, and 87 the ELF assembler should never do the relocation. */ 88 89#ifdef OBJ_ELF 90#define obj_relocate_extern 0 91#else 92#define obj_relocate_extern (! sparc_pic_code) 93#endif 94 95#define TC_RELOC_RTSYM_LOC_FIXUP(FIX) \ 96 (obj_relocate_extern \ 97 || (FIX)->fx_addsy == NULL \ 98 || (! S_IS_EXTERNAL ((FIX)->fx_addsy) \ 99 && ! S_IS_WEAK ((FIX)->fx_addsy) \ 100 && S_IS_DEFINED ((FIX)->fx_addsy) \ 101 && ! S_IS_COMMON ((FIX)->fx_addsy))) 102#endif 103 104/* I know that "call 0" fails in sparc-coff if this doesn't return 1. I 105 don't know about other relocation types, or other formats, yet. */ 106#ifdef OBJ_COFF 107#define TC_FORCE_RELOCATION(FIXP) \ 108 ((FIXP)->fx_r_type == BFD_RELOC_32_PCREL_S2 \ 109 && ((FIXP)->fx_addsy == 0 \ 110 || S_GET_SEGMENT ((FIXP)->fx_addsy) == absolute_section)) 111#define RELOC_REQUIRES_SYMBOL 112#endif 113 114#ifdef OBJ_ELF 115#define TC_FORCE_RELOCATION(fixp) elf32_sparc_force_relocation(fixp) 116extern int elf32_sparc_force_relocation PARAMS ((struct fix *)); 117#endif 118 119#define MD_APPLY_FIX3 120#define TC_HANDLES_FX_DONE 121 122#ifdef OBJ_ELF 123/* Keep relocations against global symbols. Don't turn them into 124 relocations against sections. This is required for the dynamic 125 linker to operate properly. When generating PIC, we need to keep 126 any non PC relative reloc. The PIC part of this test must be 127 parallel to the code in tc_gen_reloc which converts relocations to 128 GOT relocations. */ 129#define tc_fix_adjustable(FIX) \ 130 (! S_IS_EXTERNAL ((FIX)->fx_addsy) \ 131 && ! S_IS_WEAK ((FIX)->fx_addsy) \ 132 && (FIX)->fx_r_type != BFD_RELOC_VTABLE_INHERIT \ 133 && (FIX)->fx_r_type != BFD_RELOC_VTABLE_ENTRY \ 134 && (! sparc_pic_code \ 135 || ((FIX)->fx_r_type != BFD_RELOC_HI22 \ 136 && (FIX)->fx_r_type != BFD_RELOC_LO10 \ 137 && (FIX)->fx_r_type != BFD_RELOC_SPARC13 \ 138 && ((FIX)->fx_r_type != BFD_RELOC_32_PCREL_S2 \ 139 || (S_IS_DEFINED ((FIX)->fx_addsy) \ 140 && ! S_IS_COMMON ((FIX)->fx_addsy) \ 141 && ! S_IS_EXTERNAL ((FIX)->fx_addsy) \ 142 && ! S_IS_WEAK ((FIX)->fx_addsy))) \ 143 && ((FIX)->fx_pcrel \ 144 || ((FIX)->fx_subsy != NULL \ 145 && (S_GET_SEGMENT ((FIX)->fx_subsy) \ 146 == S_GET_SEGMENT ((FIX)->fx_addsy))) \ 147 || S_IS_LOCAL ((FIX)->fx_addsy))))) 148 149/* Finish up the entire symtab. */ 150#define tc_adjust_symtab() sparc_adjust_symtab () 151extern void sparc_adjust_symtab PARAMS ((void)); 152#endif 153 154#ifdef OBJ_AOUT 155/* When generating PIC code, we must not adjust any reloc which will 156 turn into a reloc against the global offset table, nor any reloc 157 which we will need if a symbol is overridden. */ 158#define tc_fix_adjustable(FIX) \ 159 (! sparc_pic_code \ 160 || ((FIX)->fx_pcrel \ 161 && ((FIX)->fx_addsy == NULL \ 162 || (! S_IS_EXTERNAL ((FIX)->fx_addsy) \ 163 && ! S_IS_WEAK ((FIX)->fx_addsy)))) \ 164 || (FIX)->fx_r_type == BFD_RELOC_16 \ 165 || (FIX)->fx_r_type == BFD_RELOC_32) 166#endif 167 168#define elf_tc_final_processing sparc_elf_final_processing 169extern void sparc_elf_final_processing PARAMS ((void)); 170 171#define md_operand(x) 172 173extern void sparc_md_end PARAMS ((void)); 174#define md_end() sparc_md_end () 175 176#endif 177 178#define TC_CONS_FIX_NEW cons_fix_new_sparc 179extern void cons_fix_new_sparc 180 PARAMS ((struct frag *, int, unsigned int, struct expressionS *)); 181 182#define TC_FIX_TYPE valueT 183 184#define TC_INIT_FIX_DATA(X) \ 185 do \ 186 { \ 187 (X)->tc_fix_data = 0; \ 188 } \ 189 while(0) 190 191#define TC_FIX_DATA_PRINT(FILE, FIXP) \ 192 do \ 193 { \ 194 fprintf((FILE), "addend2=%ld\n", \ 195 (unsigned long) (FIXP)->tc_fix_data); \ 196 } \ 197 while(0) 198 199/* end of tc-sparc.h */ 200