1 /* tc-hppa.h -- Header file for the PA
2 Copyright (C) 1989, 93, 94, 95, 96, 97, 98, 1999
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
49 /* FIXME. The lack of a place to put things which are both target cpu
50 and target format dependent makes hacks like this necessary. */
53 #include "bfd/elf64-hppa.h"
54 #define TARGET_FORMAT "elf64-hppa"
56 #include "bfd/elf32-hppa.h"
57 #define TARGET_FORMAT "elf32-hppa"
63 #define TARGET_FORMAT "som"
66 /* FIXME. Why oh why aren't these defined somewhere globally? */
72 #define ASEC_NULL (asection *)0
74 /* Labels are not required to have a colon for a suffix. */
75 #define LABELS_WITHOUT_COLONS
77 /* FIXME. This should be static and declared in tc-hppa.c, but
78 pa_define_label gets used outside of tc-hppa.c via tc_frob_label.
79 Should also be PARAMized, but symbolS isn't available here. */
80 extern void pa_define_label ();
82 /* FIXME. Types not available here, so they can't be PARAMized. */
83 extern void parse_cons_expression_hppa ();
84 extern void cons_fix_new_hppa ();
85 extern int hppa_force_relocation ();
87 /* This gets called before writing the object file to make sure
88 things like entry/exit and proc/procend pairs match. */
89 extern void pa_check_eof
PARAMS ((void));
90 #define tc_frob_file pa_check_eof
92 #define tc_frob_label(sym) pa_define_label (sym)
94 /* The PA does not need support for either of these. */
95 #define tc_crawl_symbol_chain(headers) {;}
96 #define tc_headers_hook(headers) {;}
98 #define RELOC_EXPANSION_POSSIBLE
99 #define MAX_RELOC_EXPANSION 6
101 /* FIXME. More things which are both HPPA and ELF specific. There is
102 nowhere to put such things. */
104 #define elf_tc_final_processing elf_hppa_final_processing
105 void elf_hppa_final_processing
PARAMS ((void));
108 /* The PA needs to parse field selectors in .byte, etc. */
110 #define TC_PARSE_CONS_EXPRESSION(EXP, NBYTES) \
111 parse_cons_expression_hppa (EXP)
112 #define TC_CONS_FIX_NEW cons_fix_new_hppa
114 /* On the PA, an equal sign often appears as a condition or nullification
115 completer in an instruction. This can be detected by checking the
116 previous character, if the character is a comma, then the equal is
117 being used as part of an instruction. */
118 #define TC_EQUAL_IN_INSN(C, PTR) ((C) == ',')
120 /* Similarly for an exclamation point. It is used in FP comparison
121 instructions and as an end of line marker. When used in an instruction
122 it will always follow a comma. */
123 #define TC_EOL_IN_INSN(PTR) (*(PTR) == '!' && (PTR)[-1] == ',')
125 #define tc_fix_adjustable hppa_fix_adjustable
127 /* Because of the strange PA calling conventions, it is sometimes
128 necessary to emit a relocation for a call even though it would
129 normally appear safe to handle it completely within GAS. */
130 #define TC_FORCE_RELOCATION(FIXP) hppa_force_relocation (FIXP)
133 /* If a symbol is imported, but never used, then the symbol should
134 *not* end up in the symbol table. Likewise for absolute symbols
136 #define tc_frob_symbol(sym,punt) \
137 if ((S_GET_SEGMENT (sym) == &bfd_und_section && ! symbol_used_p (sym)) \
138 || (S_GET_SEGMENT (sym) == &bfd_abs_section \
139 && ! S_IS_EXTERNAL (sym))) \
142 /* We need to be able to make relocations involving the difference of
143 two symbols. This includes the difference of two symbols when
144 one of them is undefined (this comes up in PIC code generation).
146 We don't define DIFF_EXPR_OK because it does the wrong thing if
147 the add symbol is undefined and the sub symbol is a symbol in
148 the same section as the relocation. We also need some way to
149 specialize some code in adjust_reloc_syms. */
150 #define UNDEFINED_DIFFERENCE_OK
154 #define tc_frob_symbol(sym,punt) \
156 if ((S_GET_SEGMENT (sym) == &bfd_und_section && ! symbol_used_p (sym)) \
157 || (S_GET_SEGMENT (sym) == &bfd_abs_section \
158 && ! S_IS_EXTERNAL (sym)) \
159 || strcmp (S_GET_NAME (sym), "$global$") == 0) \
164 #define md_operand(x)
166 #define TC_FIX_TYPE PTR
167 #define TC_INIT_FIX_DATA(FIXP) ((FIXP)->tc_fix_data = NULL)
169 #endif /* _TC_HPPA_H */