tc-sparc.h revision 130561
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, 2002, 2003 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/* I know that "call 0" fails in sparc-coff if this doesn't return 1. I 73 don't know about other relocation types, or other formats, yet. */ 74#ifdef OBJ_COFF 75#define TC_FORCE_RELOCATION_ABS(FIX) \ 76 ((FIX)->fx_r_type == BFD_RELOC_32_PCREL_S2 \ 77 || TC_FORCE_RELOCATION (FIX)) 78 79#define RELOC_REQUIRES_SYMBOL 80#endif 81 82#ifdef OBJ_AOUT 83/* This expression evaluates to true if the relocation is for a local 84 object for which we still want to do the relocation at runtime. 85 False if we are willing to perform this relocation while building 86 the .o file. */ 87 88#define TC_FORCE_RELOCATION_LOCAL(FIX) \ 89 (!(FIX)->fx_pcrel \ 90 || (FIX)->fx_plt \ 91 || (sparc_pic_code \ 92 && S_IS_EXTERNAL ((FIX)->fx_addsy)) \ 93 || TC_FORCE_RELOCATION (FIX)) 94#endif 95 96#ifdef OBJ_ELF 97/* Don't turn certain relocs into relocations against sections. This 98 is required for the dynamic linker to operate properly. When 99 generating PIC, we need to keep any non PC relative reloc. The PIC 100 part of this test must be parallel to the code in tc_gen_reloc which 101 converts relocations to GOT relocations. */ 102#define tc_fix_adjustable(FIX) \ 103 ((FIX)->fx_r_type != BFD_RELOC_VTABLE_INHERIT \ 104 && (FIX)->fx_r_type != BFD_RELOC_VTABLE_ENTRY \ 105 && ((FIX)->fx_r_type < BFD_RELOC_SPARC_TLS_GD_HI22 \ 106 || (FIX)->fx_r_type > BFD_RELOC_SPARC_TLS_TPOFF64) \ 107 && (! sparc_pic_code \ 108 || ((FIX)->fx_r_type != BFD_RELOC_HI22 \ 109 && (FIX)->fx_r_type != BFD_RELOC_LO10 \ 110 && (FIX)->fx_r_type != BFD_RELOC_SPARC13 \ 111 && ((FIX)->fx_r_type != BFD_RELOC_32_PCREL_S2 \ 112 || !generic_force_reloc (FIX)) \ 113 && ((FIX)->fx_pcrel \ 114 || ((FIX)->fx_subsy != NULL \ 115 && (S_GET_SEGMENT ((FIX)->fx_subsy) \ 116 == S_GET_SEGMENT ((FIX)->fx_addsy))) \ 117 || S_IS_LOCAL ((FIX)->fx_addsy))))) 118 119/* Values passed to md_apply_fix3 don't include the symbol value. */ 120#define MD_APPLY_SYM_VALUE(FIX) 0 121 122/* Finish up the entire symtab. */ 123#define tc_adjust_symtab() sparc_adjust_symtab () 124extern void sparc_adjust_symtab PARAMS ((void)); 125#endif 126 127#ifdef OBJ_AOUT 128/* When generating PIC code, we must not adjust any reloc which will 129 turn into a reloc against the global offset table, nor any reloc 130 which we will need if a symbol is overridden. */ 131#define tc_fix_adjustable(FIX) \ 132 (! sparc_pic_code \ 133 || ((FIX)->fx_pcrel \ 134 && ((FIX)->fx_addsy == NULL \ 135 || (! S_IS_EXTERNAL ((FIX)->fx_addsy) \ 136 && ! S_IS_WEAK ((FIX)->fx_addsy)))) \ 137 || (FIX)->fx_r_type == BFD_RELOC_16 \ 138 || (FIX)->fx_r_type == BFD_RELOC_32) 139#endif 140 141#define elf_tc_final_processing sparc_elf_final_processing 142extern void sparc_elf_final_processing PARAMS ((void)); 143 144#define md_operand(x) 145 146extern void sparc_md_end PARAMS ((void)); 147#define md_end() sparc_md_end () 148 149#endif 150 151#ifdef OBJ_ELF 152#define TC_PARSE_CONS_EXPRESSION(EXP, NBYTES) sparc_cons (EXP, NBYTES) 153extern void sparc_cons PARAMS ((expressionS *, int)); 154#endif 155 156#define TC_CONS_FIX_NEW cons_fix_new_sparc 157extern void cons_fix_new_sparc 158 PARAMS ((struct frag *, int, unsigned int, struct expressionS *)); 159 160#define TC_FIX_TYPE valueT 161 162#define TC_INIT_FIX_DATA(X) \ 163 do \ 164 { \ 165 (X)->tc_fix_data = 0; \ 166 } \ 167 while (0) 168 169#define TC_FIX_DATA_PRINT(FILE, FIX) \ 170 do \ 171 { \ 172 fprintf ((FILE), "addend2=%ld\n", \ 173 (unsigned long) (FIX)->tc_fix_data); \ 174 } \ 175 while (0) 176 177#define TARGET_USE_CFIPOP 1 178 179#define tc_cfi_frame_initial_instructions sparc_cfi_frame_initial_instructions 180extern void sparc_cfi_frame_initial_instructions PARAMS ((void)); 181 182#define tc_regname_to_dw2regnum sparc_regname_to_dw2regnum 183extern int sparc_regname_to_dw2regnum PARAMS ((const char *regname)); 184 185#define tc_cfi_emit_pcrel_expr sparc_cfi_emit_pcrel_expr 186extern void sparc_cfi_emit_pcrel_expr PARAMS ((expressionS *, unsigned int)); 187 188extern int sparc_cie_data_alignment; 189 190#define DWARF2_LINE_MIN_INSN_LENGTH 4 191#define DWARF2_DEFAULT_RETURN_COLUMN 15 192#define DWARF2_CIE_DATA_ALIGNMENT sparc_cie_data_alignment 193 194/* end of tc-sparc.h */ 195