1 /* tc-hppa.h -- Header file for the PA 2 Copyright 1989, 1993, 1994, 1995, 1997, 1998, 1999, 2000, 2001, 2002, 3 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 published by 9 the Free Software Foundation; either version 1, or (at your option) 10 any later version. 11 12 GAS is distributed in the hope that it will be useful, 13 but WITHOUT ANY WARRANTY; without even the implied warranty of 14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 15 GNU General Public License for more details. 16 17 You should have received a copy of the GNU General Public License 18 along with GAS; see the file COPYING. If not, write to the Free 19 Software Foundation, 59 Temple Place - Suite 330, Boston, MA 20 02111-1307, USA. */ 21 22 /* HP PA-RISC support was contributed by the Center for Software Science 23 at the University of Utah. */ 24 25 /* Please refrain from exposing the world to the internals of tc-hppa.c 26 when this file is included. This means only declaring exported functions, 27 (please PARAMize them!) not exporting structures and data items which 28 are used solely within tc-hppa.c, etc. 29 30 Also refrain from adding any more object file dependent code, there is 31 already far too much object file format dependent code in this file. 32 In theory this file should contain only exported functions, structures 33 and data declarations common to all PA assemblers. */ 34 35 #ifndef _TC_HPPA_H 36 #define _TC_HPPA_H 37 38 #ifndef TC_HPPA 39 #define TC_HPPA 1 40 #endif 41 42 #define TARGET_BYTES_BIG_ENDIAN 1 43 44 #define TARGET_ARCH bfd_arch_hppa 45 46 #define WORKING_DOT_WORD 47 48 #ifdef OBJ_ELF 49 #if TARGET_ARCH_SIZE == 64 50 #include "bfd/elf64-hppa.h" 51 #if defined (TE_LINUX) || defined (TE_NetBSD) 52 #define TARGET_FORMAT "elf64-hppa-linux" 53 #else 54 #define TARGET_FORMAT "elf64-hppa" 55 #endif 56 #else /* TARGET_ARCH_SIZE == 32 */ 57 #include "bfd/elf32-hppa.h" 58 #if defined (TE_LINUX) || defined (TE_NetBSD) 59 #define TARGET_FORMAT "elf32-hppa-linux" 60 #else 61 #define TARGET_FORMAT "elf32-hppa" 62 #endif 63 #endif 64 #endif 65 66 #ifdef OBJ_SOM 67 #include "bfd/som.h" 68 #define TARGET_FORMAT "som" 69 #endif 70 71 #if defined(TE_LINUX) || defined(TE_NetBSD) || defined(TE_OpenBSD) 72 /* Define to compile in an extra assembler option, -c, which enables a 73 warning (once per file) when a comment is encountered. 74 The hppa comment char is a `;' which tends to occur in random C asm 75 statements. A semicolon is a line separator for most assemblers. 76 It's hard to find these lurking semicolons. Thus... */ 77 #define WARN_COMMENTS 1 78 #endif 79 80 #if defined(TE_NetBSD) || defined(TE_OpenBSD) 81 /* XXX the original OpenBSD code has labels without colons, 82 so this is required, for now -- fredette@netbsd.org */ 83 /* Labels are not required to have a colon for a suffix. */ 84 #define LABELS_WITHOUT_COLONS 1 85 #endif 86 87 /* FIXME. Why oh why aren't these defined somewhere globally? */ 88 #ifndef FALSE 89 #define FALSE (0) 90 #define TRUE (!FALSE) 91 #endif 92 93 #define ASEC_NULL (asection *)0 94 95 /* pa_define_label gets used outside of tc-hppa.c via tc_frob_label. */ 96 extern void pa_define_label PARAMS ((symbolS *)); 97 98 extern void parse_cons_expression_hppa PARAMS ((expressionS *)); 99 extern void cons_fix_new_hppa PARAMS ((fragS *, int, int, expressionS *)); 100 extern int hppa_force_relocation PARAMS ((struct fix *)); 101 102 /* This gets called before writing the object file to make sure 103 things like entry/exit and proc/procend pairs match. */ 104 extern void pa_check_eof PARAMS ((void)); 105 #define tc_frob_file pa_check_eof 106 107 #define tc_frob_label(sym) pa_define_label (sym) 108 109 extern const char hppa_symbol_chars[]; 110 #define tc_symbol_chars hppa_symbol_chars 111 112 /* The PA does not need support for either of these. */ 113 #define tc_crawl_symbol_chain(headers) {;} 114 #define tc_headers_hook(headers) {;} 115 116 #define RELOC_EXPANSION_POSSIBLE 117 #define MAX_RELOC_EXPANSION 6 118 119 /* The PA needs to parse field selectors in .byte, etc. */ 120 121 #define TC_PARSE_CONS_EXPRESSION(EXP, NBYTES) \ 122 parse_cons_expression_hppa (EXP) 123 #define TC_CONS_FIX_NEW cons_fix_new_hppa 124 125 /* On the PA, an equal sign often appears as a condition or nullification 126 completer in an instruction. This can be detected by checking the 127 previous character, if the character is a comma, then the equal is 128 being used as part of an instruction. */ 129 #define TC_EQUAL_IN_INSN(C, PTR) ((C) == ',') 130 131 /* Similarly for an exclamation point. It is used in FP comparison 132 instructions and as an end of line marker. When used in an instruction 133 it will always follow a comma. */ 134 #define TC_EOL_IN_INSN(PTR) (*(PTR) == '!' && (PTR)[-1] == ',') 135 136 int hppa_fix_adjustable PARAMS((struct fix *)); 137 #define tc_fix_adjustable hppa_fix_adjustable 138 139 #define EXTERN_FORCE_RELOC 1 140 141 /* Because of the strange PA calling conventions, it is sometimes 142 necessary to emit a relocation for a call even though it would 143 normally appear safe to handle it completely within GAS. */ 144 #define TC_FORCE_RELOCATION(FIX) hppa_force_relocation (FIX) 145 146 /* Values passed to md_apply_fix3 don't include the symbol value. */ 147 #define MD_APPLY_SYM_VALUE(FIX) 0 148 149 #ifdef OBJ_SOM 150 /* If a symbol is imported, but never used, then the symbol should 151 *not* end up in the symbol table. Likewise for absolute symbols 152 with local scope. */ 153 #define tc_frob_symbol(sym,punt) \ 154 if ((S_GET_SEGMENT (sym) == &bfd_und_section && ! symbol_used_p (sym)) \ 155 || (S_GET_SEGMENT (sym) == &bfd_abs_section \ 156 && ! S_IS_EXTERNAL (sym))) \ 157 punt = 1 158 159 /* We need to be able to make relocations involving the difference of 160 two symbols. This includes the difference of two symbols when 161 one of them is undefined (this comes up in PIC code generation). 162 163 We don't define DIFF_EXPR_OK because it does the wrong thing if 164 the add symbol is undefined and the sub symbol is a symbol in 165 the same section as the relocation. We also need some way to 166 specialize some code in adjust_reloc_syms. */ 167 #define UNDEFINED_DIFFERENCE_OK 168 #endif 169 170 #ifdef OBJ_ELF 171 #define DIFF_EXPR_OK 1 172 173 /* Handle .type psuedo. Given a type string of `millicode', set the 174 internal elf symbol type to STT_PARISC_MILLI, and return 175 BSF_FUNCTION for the BFD symbol type. */ 176 #define md_elf_symbol_type(name, sym, elf) \ 177 ((strcmp ((name), "millicode") == 0 \ 178 || strcmp ((name), "STT_PARISC_MILLI") == 0) \ 179 ? (((elf)->internal_elf_sym.st_info = ELF_ST_INFO \ 180 (ELF_ST_BIND ((elf)->internal_elf_sym.st_info), STT_PARISC_MILLI)\ 181 ), BSF_FUNCTION) \ 182 : -1) 183 184 #define tc_frob_symbol(sym,punt) \ 185 { \ 186 if ((S_GET_SEGMENT (sym) == &bfd_und_section && ! symbol_used_p (sym) && \ 187 ELF_ST_VISIBILITY (S_GET_OTHER (sym)) == STV_DEFAULT) \ 188 || (S_GET_SEGMENT (sym) == &bfd_abs_section \ 189 && ! S_IS_EXTERNAL (sym)) \ 190 || strcmp (S_GET_NAME (sym), "$global$") == 0 \ 191 || strcmp (S_GET_NAME (sym), "$PIC_pcrel$0") == 0) \ 192 punt = 1; \ 193 } 194 195 #define elf_tc_final_processing elf_hppa_final_processing 196 void elf_hppa_final_processing PARAMS ((void)); 197 198 #define DWARF2_LINE_MIN_INSN_LENGTH 4 199 #endif /* OBJ_ELF */ 200 201 #define md_operand(x) 202 203 /* Allow register expressions to be treated as absolute expressions. 204 A silly fudge required for backwards compatibility. */ 205 #define md_optimize_expr hppa_force_reg_syms_absolute 206 207 int hppa_force_reg_syms_absolute 208 PARAMS ((expressionS *, operatorT, expressionS *)); 209 210 #define TC_FIX_TYPE PTR 211 #define TC_INIT_FIX_DATA(FIX) ((FIX)->tc_fix_data = NULL) 212 213 #endif /* _TC_HPPA_H */ 214