19990502 sourceware importbinu_ss_19990502

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 0000000..c1541d9
--- /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 */