1 /* tc-hppa.h -- Header file for the PA
2 Copyright (C) 1989, 93, 94, 95, 96, 97, 98, 99, 2000
3 Free Software Foundation, Inc.
5 This file is part of GAS, the GNU Assembler.
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)
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.
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
23 /* HP PA-RISC support was contributed by the Center for Software Science
24 at the University of Utah. */
26 /* Please refrain from exposing the world to the internals of tc-hppa.c
27 when this file is included. This means only declaring exported functions,
28 (please PARAMize them!) not exporting structures and data items which
29 are used solely within tc-hppa.c, etc.
31 Also refrain from adding any more object file dependent code, there is
32 already far too much object file format dependent code in this file.
33 In theory this file should contain only exported functions, structures
34 and data declarations common to all PA assemblers. */
43 #define TARGET_BYTES_BIG_ENDIAN 1
45 #define TARGET_ARCH bfd_arch_hppa
47 #define WORKING_DOT_WORD
50 #if TARGET_ARCH_SIZE == 64
51 #include "bfd/elf64-hppa.h"
52 #define TARGET_FORMAT "elf64-hppa"
54 #include "bfd/elf32-hppa.h"
55 #define TARGET_FORMAT "elf32-hppa"
61 #define TARGET_FORMAT "som"
65 /* Define to compile in an extra assembler option, -c, which enables a
66 warning (once per file) when a comment is encountered.
67 The hppa comment char is a `;' which tends to occur in random C asm
68 statements. A semicolon is a line separator for most assemblers.
69 It's hard to find these lurking semicolons. Thus... */
70 #define WARN_COMMENTS 1
73 /* FIXME. Why oh why aren't these defined somewhere globally? */
79 #define ASEC_NULL (asection *)0
81 /* pa_define_label gets used outside of tc-hppa.c via tc_frob_label. */
82 extern void pa_define_label
PARAMS ((symbolS
*));
84 extern void parse_cons_expression_hppa
PARAMS ((expressionS
*));
85 extern void cons_fix_new_hppa
PARAMS ((fragS
*, int, int, expressionS
*));
86 extern int hppa_force_relocation
PARAMS ((struct fix
*));
88 /* This gets called before writing the object file to make sure
89 things like entry/exit and proc/procend pairs match. */
90 extern void pa_check_eof
PARAMS ((void));
91 #define tc_frob_file pa_check_eof
93 #define tc_frob_label(sym) pa_define_label (sym)
95 /* The PA does not need support for either of these. */
96 #define tc_crawl_symbol_chain(headers) {;}
97 #define tc_headers_hook(headers) {;}
99 #define RELOC_EXPANSION_POSSIBLE
100 #define MAX_RELOC_EXPANSION 6
102 /* FIXME. More things which are both HPPA and ELF specific. There is
103 nowhere to put such things. */
105 #define elf_tc_final_processing elf_hppa_final_processing
106 void elf_hppa_final_processing
PARAMS ((void));
107 void pa_end_of_source
PARAMS ((void));
110 /* The PA needs to parse field selectors in .byte, etc. */
112 #define TC_PARSE_CONS_EXPRESSION(EXP, NBYTES) \
113 parse_cons_expression_hppa (EXP)
114 #define TC_CONS_FIX_NEW cons_fix_new_hppa
116 /* On the PA, an equal sign often appears as a condition or nullification
117 completer in an instruction. This can be detected by checking the
118 previous character, if the character is a comma, then the equal is
119 being used as part of an instruction. */
120 #define TC_EQUAL_IN_INSN(C, PTR) ((C) == ',')
122 /* Similarly for an exclamation point. It is used in FP comparison
123 instructions and as an end of line marker. When used in an instruction
124 it will always follow a comma. */
125 #define TC_EOL_IN_INSN(PTR) (*(PTR) == '!' && (PTR)[-1] == ',')
127 int hppa_fix_adjustable
PARAMS((struct fix
*));
128 #define tc_fix_adjustable hppa_fix_adjustable
130 /* Because of the strange PA calling conventions, it is sometimes
131 necessary to emit a relocation for a call even though it would
132 normally appear safe to handle it completely within GAS. */
133 #define TC_FORCE_RELOCATION(FIXP) hppa_force_relocation (FIXP)
136 /* If a symbol is imported, but never used, then the symbol should
137 *not* end up in the symbol table. Likewise for absolute symbols
139 #define tc_frob_symbol(sym,punt) \
140 if ((S_GET_SEGMENT (sym) == &bfd_und_section && ! symbol_used_p (sym)) \
141 || (S_GET_SEGMENT (sym) == &bfd_abs_section \
142 && ! S_IS_EXTERNAL (sym))) \
145 /* We need to be able to make relocations involving the difference of
146 two symbols. This includes the difference of two symbols when
147 one of them is undefined (this comes up in PIC code generation).
149 We don't define DIFF_EXPR_OK because it does the wrong thing if
150 the add symbol is undefined and the sub symbol is a symbol in
151 the same section as the relocation. We also need some way to
152 specialize some code in adjust_reloc_syms. */
153 #define UNDEFINED_DIFFERENCE_OK
157 #define tc_frob_symbol(sym,punt) \
159 if ((S_GET_SEGMENT (sym) == &bfd_und_section && ! symbol_used_p (sym)) \
160 || (S_GET_SEGMENT (sym) == &bfd_abs_section \
161 && ! S_IS_EXTERNAL (sym)) \
162 || strcmp (S_GET_NAME (sym), "$global$") == 0) \
167 #define md_operand(x)
169 #define md_end() pa_end_of_source ()
172 #define TC_FIX_TYPE PTR
173 #define TC_INIT_FIX_DATA(FIXP) ((FIXP)->tc_fix_data = NULL)
175 #endif /* _TC_HPPA_H */