gas/config/tc-hppa.h

   1 /* tc-hppa.h -- Header file for the PA */
   2
   3 /* Copyright (C) 1989, 1993 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
  19    the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.  */
  20
  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_ARCH bfd_arch_hppa
  43
  44 /* FIXME.  The lack of a place to put things which are both target cpu
  45    and target format dependent makes hacks like this necessary.  */
  46 #ifdef OBJ_ELF
  47 #include "../bfd/elf32-hppa.h"
  48 #define TARGET_FORMAT "elf32-hppa"
  49 #endif
  50
  51 #ifdef OBJ_SOM
  52 #include "../bfd/som.h"
  53 #define TARGET_FORMAT "som"
  54 #endif
  55
  56 /* FIXME.  Why oh why aren't these defined somewhere globally?  */
  57 #ifndef FALSE
  58 #define FALSE   (0)
  59 #define TRUE    (!FALSE)
  60 #endif
  61
  62 /* Local labels have an "L$" prefix.  */
  63 #define LOCAL_LABEL(name) ((name)[0] == 'L' && (name)[1] == '$')
  64 #define FAKE_LABEL_NAME "L$0\001"
  65 #define ASEC_NULL (asection *)0
  66
  67 /* sym1 - sym2 is valid on the PA as long as sym2 is $global$.  */
  68
  69 #define SEG_DIFF_ALLOWED
  70
  71 /* FIXME.  */
  72 #ifdef OBJ_ELF
  73 extern void elf_hppa_final_processing PARAMS ((void));
  74 extern void hppa_tc_symbol PARAMS ((bfd *, elf_symbol_type *, int));
  75 #endif
  76
  77 extern void hppa_tc_make_sections PARAMS ((bfd *));
  78
  79 /* FIXME.  This should be static and declared in tc-hppa.c, but
  80    pa_define_label gets used outside of tc-hppa.c via tc_frob_label.
  81    Should also be PARAMized, but symbolS isn't available here.  */
  82 extern void pa_define_label ();
  83
  84 /* FIXME.  Types not available here, so they can't be PARAMized.  */
  85 extern void parse_cons_expression_hppa ();
  86 extern void cons_fix_new_hppa ();
  87
  88 #define tc_frob_label(sym) pa_define_label (sym)
  89
  90 /* The PA does not need support for either of these.  */
  91 #define tc_crawl_symbol_chain(headers) {;}
  92 #define tc_headers_hook(headers) {;}
  93
  94 #define RELOC_EXPANSION_POSSIBLE
  95 #define MAX_RELOC_EXPANSION 5
  96
  97 /* FIXME.  More things which are both HPPA and ELF specific.  There is
  98    nowhere to put such things.  */
  99 #ifdef OBJ_ELF
 100 #define elf_tc_symbol           hppa_tc_symbol
 101 #define elf_tc_make_sections    hppa_tc_make_sections
 102 #define elf_tc_final_processing elf_hppa_final_processing
 103 #endif
 104
 105 /* The PA needs to parse field selectors in .byte, etc.  */
 106
 107 #define TC_PARSE_CONS_EXPRESSION(EXP, NBYTES) \
 108   parse_cons_expression_hppa (EXP)
 109 #define TC_CONS_FIX_NEW cons_fix_new_hppa
 110
 111 /* On the PA, an equal sign often appears as a condition or nullification
 112    completer in an instruction.  This can be detected by checking the
 113    previous character, if the character is a comma, then the equal is
 114    being used as part of an instruction.  */
 115 #define TC_EQUAL_IN_INSN(C, PTR)        ((C) == ',')
 116
 117 /* Similarly for an exclamation point.  It is used in FP comparison
 118    instructions and as an end of line marker.  When used in an instruction
 119    it will always follow a comma.  */
 120 #define TC_EOL_IN_INSN(PTR)     (is_end_of_line[*(PTR)] && (PTR)[-1] == ',')
 121
 122 #define tc_fix_adjustable hppa_fix_adjustable
 123
 124 #endif /* _TC_HPPA_H */