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