1 /* This file is tc-alpha.h 2 Copyright 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002 3 Free Software Foundation, Inc. 4 Written by Ken Raeburn <raeburn@cygnus.com>. 5 6 This file is part of GAS, the GNU Assembler. 7 8 GAS is free software; you can redistribute it and/or modify 9 it under the terms of the GNU General Public License as published by 10 the Free Software Foundation; either version 2, or (at your option) 11 any later version. 12 13 GAS is distributed in the hope that it will be useful, 14 but WITHOUT ANY WARRANTY; without even the implied warranty of 15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 16 GNU General Public License for more details. 17 18 You should have received a copy of the GNU General Public License 19 along with GAS; see the file COPYING. If not, write to the Free 20 Software Foundation, 59 Temple Place - Suite 330, Boston, MA 21 02111-1307, USA. */ 22 23 #define TC_ALPHA 24 25 #define TARGET_BYTES_BIG_ENDIAN 0 26 27 #define WORKING_DOT_WORD 28 29 #define TARGET_ARCH bfd_arch_alpha 30 31 #ifdef TE_FreeBSD 32 #define ELF_TARGET_FORMAT "elf64-alpha-freebsd" 33 #endif 34 #ifndef ELF_TARGET_FORMAT 35 #define ELF_TARGET_FORMAT "elf64-alpha" 36 #endif 37 38 #define TARGET_FORMAT (OUTPUT_FLAVOR == bfd_target_ecoff_flavour \ 39 ? "ecoff-littlealpha" \ 40 : OUTPUT_FLAVOR == bfd_target_elf_flavour \ 41 ? ELF_TARGET_FORMAT \ 42 : OUTPUT_FLAVOR == bfd_target_evax_flavour \ 43 ? "vms-alpha" \ 44 : "unknown-format") 45 46 #define NEED_LITERAL_POOL 47 #define REPEAT_CONS_EXPRESSIONS 48 49 struct fix; 50 struct alpha_reloc_tag; 51 52 extern int alpha_force_relocation PARAMS ((struct fix *)); 53 extern int alpha_fix_adjustable PARAMS ((struct fix *)); 54 55 extern unsigned long alpha_gprmask, alpha_fprmask; 56 extern valueT alpha_gp_value; 57 58 #define TC_FORCE_RELOCATION(FIX) alpha_force_relocation (FIX) 59 #define tc_fix_adjustable(FIX) alpha_fix_adjustable (FIX) 60 #define RELOC_REQUIRES_SYMBOL 61 62 /* Values passed to md_apply_fix3 don't include the symbol value. */ 63 #define MD_APPLY_SYM_VALUE(FIX) 0 64 65 #define md_convert_frag(b,s,f) as_fatal ("alpha convert_frag\n") 66 #define md_estimate_size_before_relax(f,s) \ 67 (as_fatal ("estimate_size_before_relax called"),1) 68 #define md_operand(x) 69 70 #ifdef OBJ_EVAX 71 72 /* This field keeps the symbols position in the link section. */ 73 #define OBJ_SYMFIELD_TYPE valueT 74 75 #define TC_CONS_FIX_NEW(FRAG,OFF,LEN,EXP) \ 76 fix_new_exp (FRAG, OFF, (int)LEN, EXP, 0, \ 77 LEN == 2 ? BFD_RELOC_16 \ 78 : LEN == 4 ? BFD_RELOC_32 \ 79 : LEN == 8 ? BFD_RELOC_64 \ 80 : BFD_RELOC_ALPHA_LINKAGE); 81 #endif 82 83 #ifndef VMS 84 #define TC_IMPLICIT_LCOMM_ALIGNMENT(size, align) \ 85 do \ 86 { \ 87 align = 0; \ 88 if (size > 1) \ 89 { \ 90 addressT temp = 1; \ 91 while ((size & temp) == 0) \ 92 ++align, temp <<= 1; \ 93 } \ 94 } \ 95 while (0) 96 #endif 97 98 #define md_number_to_chars number_to_chars_littleendian 99 100 extern int tc_get_register PARAMS ((int frame)); 101 extern void alpha_frob_ecoff_data PARAMS ((void)); 102 103 #define tc_frob_label(sym) alpha_define_label (sym) 104 extern void alpha_define_label PARAMS ((symbolS *)); 105 106 #define md_cons_align(nbytes) alpha_cons_align (nbytes) 107 extern void alpha_cons_align PARAMS ((int)); 108 109 #define HANDLE_ALIGN(fragp) alpha_handle_align (fragp) 110 extern void alpha_handle_align PARAMS ((struct frag *)); 111 112 #define MAX_MEM_FOR_RS_ALIGN_CODE (3 + 4 + 8) 113 114 #ifdef OBJ_ECOFF 115 #define tc_frob_file_before_adjust() alpha_frob_file_before_adjust () 116 extern void alpha_frob_file_before_adjust PARAMS ((void)); 117 #endif 118 119 #define DIFF_EXPR_OK /* foo-. gets turned into PC relative relocs */ 120 121 #ifdef OBJ_ELF 122 #define md_elf_section_letter alpha_elf_section_letter 123 extern int alpha_elf_section_letter PARAMS ((int, char **)); 124 #define md_elf_section_flags alpha_elf_section_flags 125 extern flagword alpha_elf_section_flags PARAMS ((flagword, int, int)); 126 #endif 127 128 /* Whether to add support for explicit !relocation_op!sequence_number. At the 129 moment, only do this for ELF, though ECOFF could use it as well. */ 130 131 #ifdef OBJ_ELF 132 #define RELOC_OP_P 133 #endif 134 135 /* Before the relocations are written, reorder them, so that user 136 supplied !lituse relocations follow the appropriate !literal 137 relocations. Also convert the gas-internal relocations to the 138 appropriate linker relocations. */ 139 #define tc_frob_file_before_fix() alpha_before_fix () 140 extern void alpha_before_fix PARAMS ((void)); 141 142 #ifdef OBJ_ELF 143 #define md_end alpha_elf_md_end 144 extern void alpha_elf_md_end PARAMS ((void)); 145 #endif 146 147 /* New fields for supporting explicit relocations (such as !literal to mark 148 where a pointer is loaded from the global table, and !lituse_base to track 149 all of the normal uses of that pointer). */ 150 151 #define TC_FIX_TYPE struct alpha_fix_tag 152 153 struct alpha_fix_tag 154 { 155 struct fix *next_reloc; /* next !lituse or !gpdisp */ 156 struct alpha_reloc_tag *info; /* other members with same sequence */ 157 }; 158 159 /* Initialize the TC_FIX_TYPE field. */ 160 #define TC_INIT_FIX_DATA(FIX) \ 161 do { \ 162 FIX->tc_fix_data.next_reloc = (struct fix *) 0; \ 163 FIX->tc_fix_data.info = (struct alpha_reloc_tag *) 0; \ 164 } while (0) 165 166 /* Work with DEBUG5 to print fields in tc_fix_type. */ 167 #define TC_FIX_DATA_PRINT(STREAM, FIX) \ 168 do { \ 169 if (FIX->tc_fix_data.info) \ 170 fprintf (STREAM, "\tinfo = 0x%lx, next_reloc = 0x%lx\n", \ 171 (long) FIX->tc_fix_data.info, \ 172 (long) FIX->tc_fix_data.next_reloc); \ 173 } while (0) 174 175 #define TARGET_USE_CFIPOP 1 176 177 #define tc_cfi_frame_initial_instructions alpha_cfi_frame_initial_instructions 178 extern void alpha_cfi_frame_initial_instructions(void); 179 180 #define DWARF2_LINE_MIN_INSN_LENGTH 4 181 #define DWARF2_DEFAULT_RETURN_COLUMN 26 182 #define DWARF2_CIE_DATA_ALIGNMENT -8 183