161 lines
5.5 KiB
C
161 lines
5.5 KiB
C
/* tc-hppa.h -- Header file for the PA
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Copyright (C) 1989, 93, 94, 95, 96, 1997 Free Software Foundation, Inc.
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This file is part of GAS, the GNU Assembler.
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GAS is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 1, or (at your option)
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any later version.
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GAS is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with GAS; see the file COPYING. If not, write to the Free
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Software Foundation, 59 Temple Place - Suite 330, Boston, MA
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02111-1307, USA. */
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/* HP PA-RISC support was contributed by the Center for Software Science
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at the University of Utah. */
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/* Please refrain from exposing the world to the internals of tc-hppa.c
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when this file is included. This means only declaring exported functions,
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(please PARAMize them!) not exporting structures and data items which
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are used solely within tc-hppa.c, etc.
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Also refrain from adding any more object file dependent code, there is
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already far too much object file format dependent code in this file.
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In theory this file should contain only exported functions, structures
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and data declarations common to all PA assemblers. */
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#ifndef _TC_HPPA_H
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#define _TC_HPPA_H
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#ifndef TC_HPPA
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#define TC_HPPA 1
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#endif
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#define TARGET_BYTES_BIG_ENDIAN 1
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#define TARGET_ARCH bfd_arch_hppa
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/* FIXME. The lack of a place to put things which are both target cpu
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and target format dependent makes hacks like this necessary. */
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#ifdef OBJ_ELF
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#include "bfd/elf32-hppa.h"
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#define TARGET_FORMAT "elf32-hppa"
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#endif
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#ifdef OBJ_SOM
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#include "bfd/som.h"
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#define TARGET_FORMAT "som"
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#endif
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/* FIXME. Why oh why aren't these defined somewhere globally? */
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#ifndef FALSE
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#define FALSE (0)
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#define TRUE (!FALSE)
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#endif
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#define ASEC_NULL (asection *)0
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/* Labels are not required to have a colon for a suffix. */
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#define LABELS_WITHOUT_COLONS
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/* FIXME. This should be static and declared in tc-hppa.c, but
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pa_define_label gets used outside of tc-hppa.c via tc_frob_label.
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Should also be PARAMized, but symbolS isn't available here. */
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extern void pa_define_label ();
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/* FIXME. Types not available here, so they can't be PARAMized. */
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extern void parse_cons_expression_hppa ();
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extern void cons_fix_new_hppa ();
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extern int hppa_force_relocation ();
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/* This gets called before writing the object file to make sure
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things like entry/exit and proc/procend pairs match. */
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extern void pa_check_eof PARAMS ((void));
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#define tc_frob_file pa_check_eof
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#define tc_frob_label(sym) pa_define_label (sym)
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/* The PA does not need support for either of these. */
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#define tc_crawl_symbol_chain(headers) {;}
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#define tc_headers_hook(headers) {;}
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#define RELOC_EXPANSION_POSSIBLE
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#define MAX_RELOC_EXPANSION 6
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/* FIXME. More things which are both HPPA and ELF specific. There is
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nowhere to put such things. */
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#ifdef OBJ_ELF
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#define elf_tc_final_processing elf_hppa_final_processing
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void elf_hppa_final_processing PARAMS ((void));
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#endif
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/* The PA needs to parse field selectors in .byte, etc. */
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#define TC_PARSE_CONS_EXPRESSION(EXP, NBYTES) \
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parse_cons_expression_hppa (EXP)
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#define TC_CONS_FIX_NEW cons_fix_new_hppa
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/* On the PA, an equal sign often appears as a condition or nullification
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completer in an instruction. This can be detected by checking the
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previous character, if the character is a comma, then the equal is
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being used as part of an instruction. */
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#define TC_EQUAL_IN_INSN(C, PTR) ((C) == ',')
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/* Similarly for an exclamation point. It is used in FP comparison
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instructions and as an end of line marker. When used in an instruction
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it will always follow a comma. */
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#define TC_EOL_IN_INSN(PTR) (*(PTR) == '!' && (PTR)[-1] == ',')
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#define tc_fix_adjustable hppa_fix_adjustable
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/* Because of the strange PA calling conventions, it is sometimes
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necessary to emit a relocation for a call even though it would
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normally appear safe to handle it completely within GAS. */
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#define TC_FORCE_RELOCATION(FIXP) hppa_force_relocation (FIXP)
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#ifdef OBJ_SOM
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/* If a symbol is imported, but never used, then the symbol should
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*not* end up in the symbol table. Likewise for absolute symbols
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with local scope. */
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#define tc_frob_symbol(sym,punt) \
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if ((S_GET_SEGMENT (sym) == &bfd_und_section && sym->sy_used == 0) \
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|| (S_GET_SEGMENT (sym) == &bfd_abs_section \
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&& (sym->bsym->flags & BSF_EXPORT) == 0)) \
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punt = 1
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/* We need to be able to make relocations involving the difference of
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two symbols. This includes the difference of two symbols when
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one of them is undefined (this comes up in PIC code generation).
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We don't define DIFF_EXPR_OK because it does the wrong thing if
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the add symbol is undefined and the sub symbol is a symbol in
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the same section as the relocation. We also need some way to
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specialize some code in adjust_reloc_syms. */
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#define UNDEFINED_DIFFERENCE_OK
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#endif
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#ifdef OBJ_ELF
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#define tc_frob_symbol(sym,punt) \
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{ \
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if ((S_GET_SEGMENT (sym) == &bfd_und_section && sym->sy_used == 0) \
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|| (S_GET_SEGMENT (sym) == &bfd_abs_section \
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&& (sym->bsym->flags & BSF_EXPORT) == 0)) \
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punt = 1; \
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}
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#endif
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#define md_operand(x)
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#define TC_FIX_TYPE PTR
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#define TC_INIT_FIX_DATA(FIXP) ((FIXP)->tc_fix_data = NULL)
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#endif /* _TC_HPPA_H */
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