tc-alpha.h revision 130562
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 49struct fix; 50struct alpha_reloc_tag; 51 52extern int alpha_force_relocation PARAMS ((struct fix *)); 53extern int alpha_fix_adjustable PARAMS ((struct fix *)); 54 55extern unsigned long alpha_gprmask, alpha_fprmask; 56extern 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 100extern int tc_get_register PARAMS ((int frame)); 101extern void alpha_frob_ecoff_data PARAMS ((void)); 102 103#define tc_frob_label(sym) alpha_define_label (sym) 104extern void alpha_define_label PARAMS ((symbolS *)); 105 106#define md_cons_align(nbytes) alpha_cons_align (nbytes) 107extern void alpha_cons_align PARAMS ((int)); 108 109#define HANDLE_ALIGN(fragp) alpha_handle_align (fragp) 110extern 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 () 116extern 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 123extern int alpha_elf_section_letter PARAMS ((int, char **)); 124#define md_elf_section_flags alpha_elf_section_flags 125extern 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 () 140extern void alpha_before_fix PARAMS ((void)); 141 142#ifdef OBJ_ELF 143#define md_end alpha_elf_md_end 144extern 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 153struct 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) \ 161do { \ 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) \ 168do { \ 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 178extern 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