485 lines
13 KiB
C
485 lines
13 KiB
C
/* as.h - global header file
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Copyright (C) 1987, 1990, 1991, 1992 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 2, 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
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the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */
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#ifndef GAS
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#define GAS 1
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/*
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* I think this stuff is largely out of date. xoxorich.
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*
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* CAPITALISED names are #defined.
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* "lowercaseH" is #defined if "lowercase.h" has been #include-d.
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* "lowercaseT" is a typedef of "lowercase" objects.
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* "lowercaseP" is type "pointer to object of type 'lowercase'".
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* "lowercaseS" is typedef struct ... lowercaseS.
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*
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* #define DEBUG to enable all the "know" assertion tests.
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* #define SUSPECT when debugging hash code.
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* #define COMMON as "extern" for all modules except one, where you #define
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* COMMON as "".
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* If TEST is #defined, then we are testing a module: #define COMMON as "".
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*/
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/* These #defines are for parameters of entire assembler. */
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/* These #includes are for type definitions etc. */
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#include "config.h"
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#include <stdio.h>
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#ifdef DEBUG
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#undef NDEBUG
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#endif
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#include <assert.h>
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#include <ansidecl.h>
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#ifdef BFD_ASSEMBLER
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#include <bfd.h>
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#endif
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#include "host.h"
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#include "flonum.h"
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/* Make Saber happier on obstack.h. */
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#ifdef SABER
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#undef __PTR_TO_INT
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#define __PTR_TO_INT(P) ((int)(P))
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#undef __INT_TO_PTR
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#define __INT_TO_PTR(P) ((char *)(P))
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#endif
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#ifndef __LINE__
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#define __LINE__ "unknown"
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#endif /* __LINE__ */
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#ifndef __FILE__
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#define __FILE__ "unknown"
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#endif /* __FILE__ */
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#ifndef __STDC__
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#ifndef const
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#define const
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#endif
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#ifndef volatile
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#define volatile
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#endif
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#endif /* ! __STDC__ */
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#if !defined (__GNUC__) && !defined (inline)
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#define inline
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#endif
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#ifndef FOPEN_WB
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#include "fopen-same.h"
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#endif
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#define obstack_chunk_alloc xmalloc
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#define obstack_chunk_free xfree
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#define xfree free
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#define BAD_CASE(val) \
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{ \
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as_fatal("Case value %ld unexpected at line %d of file \"%s\"\n", \
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(long) val, __LINE__, __FILE__); \
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}
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/* These are assembler-wide concepts */
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#ifdef BFD_ASSEMBLER
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extern bfd *stdoutput;
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typedef bfd_vma addressT;
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typedef bfd_signed_vma offsetT;
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#else
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typedef unsigned long addressT;
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typedef long offsetT;
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#endif
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/* Type of symbol value, etc. For use in prototypes. */
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typedef addressT valueT;
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#ifndef COMMON
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#ifdef TEST
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#define COMMON /* declare our COMMONs storage here. */
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#else
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#define COMMON extern /* our commons live elswhere */
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#endif
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#endif
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/* COMMON now defined */
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#ifdef DEBUG
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#ifndef know
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#define know(p) assert(p) /* Verify our assumptions! */
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#endif /* not yet defined */
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#else
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#define know(p) /* know() checks are no-op.ed */
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#endif
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#if defined (BROKEN_ASSERT) && !defined (NDEBUG)
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/* Used on machines where the "assert" macro is buggy. (For example, on the
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RS/6000, Reiser-cpp substitution is done to put the condition into a
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string, so if the condition contains a string, parse errors result.) If
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the condition fails, just drop core file. */
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#undef assert
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#define assert(p) ((p) ? 0 : (abort (), 0))
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#endif
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/* input_scrub.c */
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/*
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* Supplies sanitised buffers to read.c.
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* Also understands printing line-number part of error messages.
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*/
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/* subsegs.c Sub-segments. Also, segment(=expression type)s.*/
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#ifndef BFD_ASSEMBLER
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#ifdef MANY_SEGMENTS
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#include "bfd.h"
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#define N_SEGMENTS 10
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#define SEG_NORMAL(x) ((x) >= SEG_E0 && (x) <= SEG_E9)
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#define SEG_LIST SEG_E0,SEG_E1,SEG_E2,SEG_E3,SEG_E4,SEG_E5,SEG_E6,SEG_E7,SEG_E8,SEG_E9
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#define SEG_TEXT SEG_E0
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#define SEG_DATA SEG_E1
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#define SEG_BSS SEG_E2
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#else
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#define N_SEGMENTS 3
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#define SEG_NORMAL(x) ((x) == SEG_TEXT || (x) == SEG_DATA || (x) == SEG_BSS)
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#define SEG_LIST SEG_TEXT,SEG_DATA,SEG_BSS
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#endif
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typedef enum _segT
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{
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SEG_ABSOLUTE = 0,
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SEG_LIST,
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SEG_UNKNOWN,
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SEG_GOOF, /* Only happens if AS has a logic error. */
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/* Invented so we don't crash printing */
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/* error message involving weird segment. */
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SEG_EXPR, /* Intermediate expression values. */
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SEG_DEBUG, /* Debug segment */
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SEG_NTV, /* Transfert vector preload segment */
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SEG_PTV, /* Transfert vector postload segment */
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SEG_REGISTER /* Mythical: a register-valued expression */
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} segT;
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#define SEG_MAXIMUM_ORDINAL (SEG_REGISTER)
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#else
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typedef asection *segT;
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#define SEG_NORMAL(SEG) ((SEG) != absolute_section \
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&& (SEG) != undefined_section \
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&& (SEG) != reg_section \
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&& (SEG) != expr_section)
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#endif
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typedef int subsegT;
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/* What subseg we are accreting now? */
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COMMON subsegT now_subseg;
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/* Segment our instructions emit to. */
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COMMON segT now_seg;
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#ifdef BFD_ASSEMBLER
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#define segment_name(SEG) bfd_get_section_name (stdoutput, SEG)
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#else
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extern char *const seg_name[];
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#define segment_name(SEG) seg_name[(int) (SEG)]
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#endif
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#ifndef BFD_ASSEMBLER
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extern int section_alignment[];
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#endif
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#ifdef BFD_ASSEMBLER
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extern segT reg_section, expr_section;
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/* Shouldn't these be eliminated someday? */
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extern segT text_section, data_section, bss_section;
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#define absolute_section (&bfd_abs_section)
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#define undefined_section (&bfd_und_section)
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#else
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#define reg_section SEG_REGISTER
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#define expr_section SEG_EXPR
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#define text_section SEG_TEXT
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#define data_section SEG_DATA
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#define bss_section SEG_BSS
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#define absolute_section SEG_ABSOLUTE
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#define undefined_section SEG_UNKNOWN
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#endif
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/* relax() */
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typedef enum _relax_state
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{
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/* Variable chars to be repeated fr_offset times.
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Fr_symbol unused. Used with fr_offset == 0 for a
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constant length frag. */
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rs_fill = 1,
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/* Align: Fr_offset: power of 2. Variable chars: fill pattern. */
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rs_align,
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/* Org: Fr_offset, fr_symbol: address. 1 variable char: fill
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character. */
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rs_org,
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rs_machine_dependent
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#ifndef WORKING_DOT_WORD
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/* JF: gunpoint */
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, rs_broken_word
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#endif
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} relax_stateT;
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/* typedef unsigned char relax_substateT; */
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/* JF this is more likely to leave the end of a struct frag on an align
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boundry. Be very careful with this. */
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typedef unsigned long relax_substateT;
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/* Enough bits for address, but still an integer type.
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Could be a problem, cross-assembling for 64-bit machines. */
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typedef addressT relax_addressT;
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/* frags.c */
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/*
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* A code fragment (frag) is some known number of chars, followed by some
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* unknown number of chars. Typically the unknown number of chars is an
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* instruction address whose size is yet unknown. We always know the greatest
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* possible size the unknown number of chars may become, and reserve that
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* much room at the end of the frag.
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* Once created, frags do not change address during assembly.
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* We chain the frags in (a) forward-linked list(s). The object-file address
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* of the 1st char of a frag is generally not known until after relax().
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* Many things at assembly time describe an address by {object-file-address
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* of a particular frag}+offset.
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BUG: it may be smarter to have a single pointer off to various different
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notes for different frag kinds. See how code pans
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*/
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struct frag
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{
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/* Object file address. */
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addressT fr_address;
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/* Chain forward; ascending address order. Rooted in frch_root. */
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struct frag *fr_next;
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/* (Fixed) number of chars we know we have. May be 0. */
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offsetT fr_fix;
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/* (Variable) number of chars after above. May be 0. */
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offsetT fr_var;
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/* For variable-length tail. */
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struct symbol *fr_symbol;
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/* For variable-length tail. */
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offsetT fr_offset;
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/* Points to opcode low addr byte, for relaxation. */
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char *fr_opcode;
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#ifndef NO_LISTING
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struct list_info_struct *line;
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#endif
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/* What state is my tail in? */
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relax_stateT fr_type;
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relax_substateT fr_subtype;
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/* These are needed only on the NS32K machines */
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char fr_pcrel_adjust;
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char fr_bsr;
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/* Chars begin here.
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One day we will compile fr_literal[0]. */
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char fr_literal[1];
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};
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#define SIZEOF_STRUCT_FRAG \
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((int)zero_address_frag.fr_literal-(int)&zero_address_frag)
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/* We want to say fr_literal[0] above. */
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typedef struct frag fragS;
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/* Current frag we are building. This frag is incomplete. It is, however,
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included in frchain_now. The fr_fix field is bogus; instead, use:
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obstack_next_free(&frags)-frag_now->fr_literal. */
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COMMON fragS *frag_now;
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#define frag_now_fix() ((char*)obstack_next_free (&frags) - frag_now->fr_literal)
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/* For foreign-segment symbol fixups. */
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COMMON fragS zero_address_frag;
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/* For local common (N_BSS segment) fixups. */
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COMMON fragS bss_address_frag;
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/* main program "as.c" (command arguments etc) */
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/* ['x'] TRUE if "-x" seen. */
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COMMON char flagseen[128];
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COMMON unsigned char flag_readonly_data_in_text;
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COMMON unsigned char flag_suppress_warnings;
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COMMON unsigned char flag_always_generate_output;
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/* name of emitted object file */
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COMMON char *out_file_name;
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/* TRUE if we need a second pass. */
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COMMON int need_pass_2;
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/* TRUE if we should do no relaxing, and
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leave lots of padding. */
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COMMON int linkrelax;
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/* TRUE if we should produce a listing. */
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extern int listing;
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struct _pseudo_type
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{
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/* assembler mnemonic, lower case, no '.' */
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char *poc_name;
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/* Do the work */
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void (*poc_handler) PARAMS ((int));
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/* Value to pass to handler */
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int poc_val;
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};
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typedef struct _pseudo_type pseudo_typeS;
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#ifdef BFD_ASSEMBLER_xxx
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struct lineno_struct
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{
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alent line;
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fragS *frag;
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struct lineno_struct *next;
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};
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typedef struct lineno_struct lineno;
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#endif
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#if defined (__STDC__) && !defined(NO_STDARG)
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#if __GNUC__ >= 2
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/* for use with -Wformat */
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#define PRINTF_LIKE(FCN) void FCN (const char *format, ...) \
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__attribute__ ((format (printf, 1, 2)))
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#define PRINTF_WHERE_LIKE(FCN) void FCN (char *file, unsigned int line, \
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const char *format, ...) \
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__attribute__ ((format (printf, 3, 4)))
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#else /* ANSI C with stdarg, but not GNU C */
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#define PRINTF_LIKE(FCN) void FCN (const char *format, ...)
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#define PRINTF_WHERE_LIKE(FCN) void FCN (char *file, unsigned int line, \
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const char *format, ...)
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#endif
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#else /* not ANSI C, or not stdarg */
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#define PRINTF_LIKE(FCN) void FCN ()
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#define PRINTF_WHERE_LIKE(FCN) void FCN ()
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#endif
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PRINTF_LIKE (as_bad);
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PRINTF_LIKE (as_fatal);
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PRINTF_LIKE (as_tsktsk);
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PRINTF_LIKE (as_warn);
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PRINTF_WHERE_LIKE (as_bad_where);
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PRINTF_WHERE_LIKE (as_warn_where);
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void fprint_value PARAMS ((FILE *file, addressT value));
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void sprint_value PARAMS ((char *buf, addressT value));
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int had_errors PARAMS ((void));
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int had_warnings PARAMS ((void));
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void print_version_id PARAMS ((void));
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char *app_push PARAMS ((void));
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char *atof_ieee PARAMS ((char *str, int what_kind, LITTLENUM_TYPE * words));
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char *input_scrub_include_file PARAMS ((char *filename, char *position));
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char *input_scrub_new_file PARAMS ((char *filename));
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char *input_scrub_next_buffer PARAMS ((char **bufp));
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#if 0 /* incompatible with solaris 2 native cc */
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char *strstr PARAMS ((const char *s, const char *wanted));
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#endif
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char *xmalloc PARAMS ((unsigned long size));
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char *xrealloc PARAMS ((char *ptr, unsigned long n));
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int do_scrub_next_char PARAMS ((int (*get) (void), void (*unget) (int)));
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int gen_to_words PARAMS ((LITTLENUM_TYPE * words, int precision,
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long exponent_bits));
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int had_err PARAMS ((void));
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int ignore_input PARAMS ((void));
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int scrub_from_file PARAMS ((void));
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int scrub_from_string PARAMS ((void));
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int seen_at_least_1_file PARAMS ((void));
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void app_pop PARAMS ((char *arg));
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void as_howmuch PARAMS ((FILE * stream));
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void as_perror PARAMS ((char *gripe, char *filename));
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void as_where PARAMS ((char **namep, unsigned int *linep));
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void bump_line_counters PARAMS ((void));
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void do_scrub_begin PARAMS ((void));
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void input_scrub_begin PARAMS ((void));
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void input_scrub_close PARAMS ((void));
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void input_scrub_end PARAMS ((void));
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void new_logical_line PARAMS ((char *fname, int line_number));
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void scrub_to_file PARAMS ((int ch));
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void scrub_to_string PARAMS ((int ch));
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void subsegs_begin PARAMS ((void));
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void subseg_change PARAMS ((segT seg, int subseg));
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segT subseg_new PARAMS ((const char *name, subsegT subseg));
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segT subseg_force_new PARAMS ((const char *name, subsegT subseg));
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void subseg_set PARAMS ((segT seg, subsegT subseg));
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struct expressionS;
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struct fix;
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struct symbol;
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#ifdef BFD_ASSEMBLER
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/* literal.c */
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valueT add_to_literal_pool PARAMS ((struct symbol *, valueT, segT, int));
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#endif
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/* this one starts the chain of target dependant headers */
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#include "targ-env.h"
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#include "expr.h"
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#include "struc-symbol.h"
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#include "write.h"
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#include "frags.h"
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#include "hash.h"
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#include "read.h"
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#include "symbols.h"
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#include "tc.h"
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#include "obj.h"
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#include "listing.h"
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#ifdef BFD_ASSEMBLER
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/* Someday perhaps this will be selectable at run-time. */
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#if defined (OBJ_AOUT) || defined (OBJ_BOUT)
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#define OUTPUT_FLAVOR bfd_target_aout_flavour
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#endif
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#ifdef OBJ_COFF
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#define OUTPUT_FLAVOR bfd_target_coff_flavour
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#endif
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#ifdef OBJ_ECOFF
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#define OUTPUT_FLAVOR bfd_target_ecoff_flavour
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#endif
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#ifdef OBJ_ELF
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#define OUTPUT_FLAVOR bfd_target_elf_flavour
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#endif
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#endif /* BFD_ASSEMBLER */
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#endif /* GAS */
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/* end of as.h */
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