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Diffstat (limited to 'gas/config/tc-hppa.h')
| -rw-r--r-- | gas/config/tc-hppa.h | 162 |
1 files changed, 162 insertions, 0 deletions
diff --git a/gas/config/tc-hppa.h b/gas/config/tc-hppa.h new file mode 100644 index 00000000000..c1541d9373f --- /dev/null +++ b/gas/config/tc-hppa.h @@ -0,0 +1,162 @@ +/* tc-hppa.h -- Header file for the PA + Copyright (C) 1989, 93, 94, 95, 96, 97, 1998 Free Software Foundation, Inc. + + This file is part of GAS, the GNU Assembler. + + GAS is free software; you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation; either version 1, or (at your option) + any later version. + + GAS is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License + along with GAS; see the file COPYING. If not, write to the Free + Software Foundation, 59 Temple Place - Suite 330, Boston, MA + 02111-1307, USA. */ + + +/* HP PA-RISC support was contributed by the Center for Software Science + at the University of Utah. */ + +/* Please refrain from exposing the world to the internals of tc-hppa.c + when this file is included. This means only declaring exported functions, + (please PARAMize them!) not exporting structures and data items which + are used solely within tc-hppa.c, etc. + + Also refrain from adding any more object file dependent code, there is + already far too much object file format dependent code in this file. + In theory this file should contain only exported functions, structures + and data declarations common to all PA assemblers. */ + +#ifndef _TC_HPPA_H +#define _TC_HPPA_H + +#ifndef TC_HPPA +#define TC_HPPA 1 +#endif + +#define TARGET_BYTES_BIG_ENDIAN 1 + +#define TARGET_ARCH bfd_arch_hppa + +#define WORKING_DOT_WORD + +/* FIXME. The lack of a place to put things which are both target cpu + and target format dependent makes hacks like this necessary. */ +#ifdef OBJ_ELF +#include "bfd/elf32-hppa.h" +#define TARGET_FORMAT "elf32-hppa" +#endif + +#ifdef OBJ_SOM +#include "bfd/som.h" +#define TARGET_FORMAT "som" +#endif + +/* FIXME. Why oh why aren't these defined somewhere globally? */ +#ifndef FALSE +#define FALSE (0) +#define TRUE (!FALSE) +#endif + +#define ASEC_NULL (asection *)0 + +/* Labels are not required to have a colon for a suffix. */ +#define LABELS_WITHOUT_COLONS + +/* FIXME. This should be static and declared in tc-hppa.c, but + pa_define_label gets used outside of tc-hppa.c via tc_frob_label. + Should also be PARAMized, but symbolS isn't available here. */ +extern void pa_define_label (); + +/* FIXME. Types not available here, so they can't be PARAMized. */ +extern void parse_cons_expression_hppa (); +extern void cons_fix_new_hppa (); +extern int hppa_force_relocation (); + +/* This gets called before writing the object file to make sure + things like entry/exit and proc/procend pairs match. */ +extern void pa_check_eof PARAMS ((void)); +#define tc_frob_file pa_check_eof + +#define tc_frob_label(sym) pa_define_label (sym) + +/* The PA does not need support for either of these. */ +#define tc_crawl_symbol_chain(headers) {;} +#define tc_headers_hook(headers) {;} + +#define RELOC_EXPANSION_POSSIBLE +#define MAX_RELOC_EXPANSION 6 + +/* FIXME. More things which are both HPPA and ELF specific. There is + nowhere to put such things. */ +#ifdef OBJ_ELF +#define elf_tc_final_processing elf_hppa_final_processing +void elf_hppa_final_processing PARAMS ((void)); +#endif + +/* The PA needs to parse field selectors in .byte, etc. */ + +#define TC_PARSE_CONS_EXPRESSION(EXP, NBYTES) \ + parse_cons_expression_hppa (EXP) +#define TC_CONS_FIX_NEW cons_fix_new_hppa + +/* On the PA, an equal sign often appears as a condition or nullification + completer in an instruction. This can be detected by checking the + previous character, if the character is a comma, then the equal is + being used as part of an instruction. */ +#define TC_EQUAL_IN_INSN(C, PTR) ((C) == ',') + +/* Similarly for an exclamation point. It is used in FP comparison + instructions and as an end of line marker. When used in an instruction + it will always follow a comma. */ +#define TC_EOL_IN_INSN(PTR) (*(PTR) == '!' && (PTR)[-1] == ',') + +#define tc_fix_adjustable hppa_fix_adjustable + +/* Because of the strange PA calling conventions, it is sometimes + necessary to emit a relocation for a call even though it would + normally appear safe to handle it completely within GAS. */ +#define TC_FORCE_RELOCATION(FIXP) hppa_force_relocation (FIXP) + +#ifdef OBJ_SOM +/* If a symbol is imported, but never used, then the symbol should + *not* end up in the symbol table. Likewise for absolute symbols + with local scope. */ +#define tc_frob_symbol(sym,punt) \ + if ((S_GET_SEGMENT (sym) == &bfd_und_section && sym->sy_used == 0) \ + || (S_GET_SEGMENT (sym) == &bfd_abs_section \ + && (sym->bsym->flags & BSF_EXPORT) == 0)) \ + punt = 1 + +/* We need to be able to make relocations involving the difference of + two symbols. This includes the difference of two symbols when + one of them is undefined (this comes up in PIC code generation). + + We don't define DIFF_EXPR_OK because it does the wrong thing if + the add symbol is undefined and the sub symbol is a symbol in + the same section as the relocation. We also need some way to + specialize some code in adjust_reloc_syms. */ +#define UNDEFINED_DIFFERENCE_OK +#endif + +#ifdef OBJ_ELF +#define tc_frob_symbol(sym,punt) \ + { \ + if ((S_GET_SEGMENT (sym) == &bfd_und_section && sym->sy_used == 0) \ + || (S_GET_SEGMENT (sym) == &bfd_abs_section \ + && (sym->bsym->flags & BSF_EXPORT) == 0)) \ + punt = 1; \ + } +#endif + +#define md_operand(x) + +#define TC_FIX_TYPE PTR +#define TC_INIT_FIX_DATA(FIXP) ((FIXP)->tc_fix_data = NULL) + +#endif /* _TC_HPPA_H */ |