/* tc-mmix.h -- Header file for tc-mmix.c.
- Copyright (C) 2001, 2002 Free Software Foundation, Inc.
+ Copyright (C) 2001-2015 Free Software Foundation, Inc.
Written by Hans-Peter Nilsson (hp@bitrange.com).
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 2, or (at your option)
+ the Free Software Foundation; either version 3, or (at your option)
any later version.
GAS is distributed in the hope that it will be useful,
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. */
+ Software Foundation, 51 Franklin Street - Fifth Floor, Boston, MA
+ 02110-1301, USA. */
#define TC_MMIX
/* "@" is a synonym for ".". */
#define LEX_AT (LEX_BEGIN_NAME)
-extern int mmix_label_without_colon_this_line PARAMS ((void));
+extern int mmix_label_without_colon_this_line (void);
#define LABELS_WITHOUT_COLONS mmix_label_without_colon_this_line ()
extern int mmix_next_semicolon_is_eoln;
#define TC_EOL_IN_INSN(p) (*(p) == ';' && ! mmix_next_semicolon_is_eoln)
/* This is one direction we can get mmixal compatibility. */
-extern void mmix_handle_mmixal PARAMS ((void));
+extern void mmix_handle_mmixal (void);
#define md_start_line_hook mmix_handle_mmixal
-extern void mmix_md_begin PARAMS ((void));
+extern void mmix_md_begin (void);
#define md_begin mmix_md_begin
-extern void mmix_md_end PARAMS ((void));
+extern void mmix_md_end (void);
#define md_end mmix_md_end
extern int mmix_current_location \
- PARAMS ((void (*fn) (expressionS *), expressionS *));
-extern int mmix_parse_predefined_name PARAMS ((char *, expressionS *));
+ (void (*fn) (expressionS *), expressionS *);
+extern int mmix_parse_predefined_name (char *, expressionS *);
extern char *mmix_current_prefix;
The [DVWIOUZX]_Handler symbols are provided when-used. */
extern int mmix_gnu_syntax;
-#define md_parse_name(name, exp, cpos) \
+#define md_parse_name(name, exp, mode, cpos) \
(! mmix_gnu_syntax \
&& (name[0] == '@' \
? (! is_part_of_name (name[1]) \
: ((name[0] == ':' || ISUPPER (name[0])) \
&& mmix_parse_predefined_name (name, exp))))
-extern char *mmix_prefix_name PARAMS ((char *));
+extern char *mmix_prefix_name (char *);
/* We implement when *creating* a symbol, we also need to strip a ':' or
prepend a prefix. */
#define md_undefined_symbol(x) NULL
-extern void mmix_fb_label PARAMS ((expressionS *));
+extern void mmix_fb_label (expressionS *);
/* Since integer_constant is local to expr.c, we have to make this a
macro. FIXME: Do it cleaner. */
/* Gas dislikes the 2ADD, 8ADD etc. insns, so we have to assemble them in
the error-recovery loop. Hopefully there are no significant
differences. Also, space on a line isn't gracefully handled. */
-extern int mmix_assemble_return_nonzero PARAMS ((char *));
+extern int mmix_assemble_return_nonzero (char *);
#define tc_unrecognized_line(c) \
((c) == ' ' \
|| (((c) == '1' || (c) == '2' || (c) == '4' || (c) == '8') \
extern const struct relax_type mmix_relax_table[];
#define TC_GENERIC_RELAX_TABLE mmix_relax_table
-/* We use the relax table for everything except the GREG frags. */
-extern long mmix_md_relax_frag PARAMS ((segT, fragS *, long));
+/* We use the relax table for everything except the GREG frags and PUSHJ. */
+extern long mmix_md_relax_frag (segT, fragS *, long);
#define md_relax_frag mmix_md_relax_frag
-#define tc_fix_adjustable(X) \
- ((! (X)->fx_addsy \
- || (! S_IS_WEAK ((X)->fx_addsy) \
- && S_GET_SEGMENT ((X)->fx_addsy) != reg_section)) \
- && (X)->fx_r_type != BFD_RELOC_VTABLE_INHERIT \
- && (X)->fx_r_type != BFD_RELOC_VTABLE_ENTRY)
+#define tc_fix_adjustable(FIX) \
+ (((FIX)->fx_addsy == NULL \
+ || S_GET_SEGMENT ((FIX)->fx_addsy) != reg_section) \
+ && (FIX)->fx_r_type != BFD_RELOC_VTABLE_INHERIT \
+ && (FIX)->fx_r_type != BFD_RELOC_VTABLE_ENTRY \
+ && (FIX)->fx_r_type != BFD_RELOC_MMIX_LOCAL)
/* Adjust symbols which are registers. */
#define tc_adjust_symtab() mmix_adjust_symtab ()
-extern void mmix_adjust_symtab PARAMS ((void));
+extern void mmix_adjust_symtab (void);
-/* Avoid outputting GAS register section symbols. This happens when the
- assembly had errors, and will propagate to an assert in BFD. FIXME:
- It seems the symbol output when-errors is a bug in GAS. Fix that
- some time. See also tc_gen_reloc.
-
- Here's where we make all symbols global, when so requested.
+/* Here's where we make all symbols global, when so requested.
We must avoid doing that for expression symbols or section symbols,
though. */
extern int mmix_globalize_symbols;
#define tc_frob_symbol(sym, punt) \
do \
{ \
- if (S_GET_SEGMENT (sym) == reg_section \
- || (symp) == section_symbol (absolute_section)) \
- (punt) = 1; \
- \
- if (mmix_globalize_symbols \
- && ! symbol_section_p (sym) \
- && symp != section_symbol (absolute_section) \
- && (! S_IS_LOCAL (sym) \
- || S_GET_SEGMENT (sym) == reg_section) \
- && (S_GET_SEGMENT (sym) != reg_section \
- || (S_GET_NAME (sym)[0] != '$' \
- && S_GET_VALUE (sym) < 256))) \
+ if (S_GET_SEGMENT (sym) == reg_section) \
+ { \
+ if (S_GET_NAME (sym)[0] != '$' \
+ && S_GET_VALUE (sym) < 256) \
+ { \
+ if (mmix_globalize_symbols) \
+ S_SET_EXTERNAL (sym); \
+ else \
+ symbol_mark_used_in_reloc (sym); \
+ } \
+ } \
+ else if (mmix_globalize_symbols \
+ && ! symbol_section_p (sym) \
+ && sym != section_symbol (absolute_section) \
+ && ! S_IS_LOCAL (sym)) \
S_SET_EXTERNAL (sym); \
} \
while (0)
+/* No shared lib support, so we don't need to ensure externally
+ visible symbols can be overridden. */
+#define EXTERN_FORCE_RELOC 0
+
/* When relaxing, we need to emit various relocs we otherwise wouldn't. */
#define TC_FORCE_RELOCATION(fix) mmix_force_relocation (fix)
-extern int mmix_force_relocation PARAMS ((struct fix *));
+extern int mmix_force_relocation (struct fix *);
/* Call md_pcrel_from_section(), not md_pcrel_from(). */
-#define MD_PCREL_FROM_SECTION(FIXP, SEC) md_pcrel_from_section (FIXP, SEC)
-extern long md_pcrel_from_section PARAMS ((struct fix *, segT));
+#define MD_PCREL_FROM_SECTION(FIX, SEC) md_pcrel_from_section (FIX, SEC)
+extern long md_pcrel_from_section (struct fix *, segT);
#define md_section_align(seg, size) (size)
all symbols have been evaluated and all frags mapped, and when the
fixups are done and relocs are output. Similarly for each unknown
symbol. */
-extern void mmix_frob_file PARAMS ((void));
-#define tc_frob_file mmix_frob_file
+extern void mmix_frob_file (void);
+#define tc_frob_file_before_fix() \
+ do \
+ { \
+ int i = 0; \
+ \
+ /* It's likely mmix_frob_file changed (removed) sections, so make \
+ sure sections are correctly numbered as per renumber_sections, \
+ (static to write.c where this macro is called). */ \
+ mmix_frob_file (); \
+ bfd_map_over_sections (stdoutput, renumber_sections, &i); \
+ } \
+ while (0)
/* Used by mmix_frob_file. Hangs on section symbols and unknown symbols. */
struct mmix_symbol_gregs;
#define TC_SYMFIELD_TYPE struct mmix_symbol_gregs *
-extern void mmix_frob_file_before_adjust PARAMS ((void));
-#define tc_frob_file_before_adjust mmix_frob_file_before_adjust
-
-extern void mmix_md_elf_section_change_hook PARAMS ((void));
+/* Used by relaxation, counting maximum needed PUSHJ stubs for a section. */
+struct mmix_segment_info_type
+ {
+ /* We only need to keep track of the last stubbable frag because
+ there's no less hackish way to keep track of different relaxation
+ rounds. */
+ fragS *last_stubfrag;
+ bfd_size_type nstubs;
+ };
+#define TC_SEGMENT_INFO_TYPE struct mmix_segment_info_type
+
+extern void mmix_md_elf_section_change_hook (void);
#define md_elf_section_change_hook mmix_md_elf_section_change_hook
-extern void mmix_md_do_align PARAMS ((int, char *, int, int));
+extern void mmix_md_do_align (int, char *, int, int);
#define md_do_align(n, fill, len, max, label) \
mmix_md_do_align (n, fill, len, max)
sequences sprinkled in, we can get unaligned DWARF2 offsets, so let's
explicitly say one byte. */
#define DWARF2_LINE_MIN_INSN_LENGTH 1
+
+/* This target is buggy, and sets fix size too large. */
+#define TC_FX_SIZE_SLACK(FIX) 6
+
+/* MMIX has global register symbols. */
+#define TC_GLOBAL_REGISTER_SYMBOL_OK
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