mirror of
https://git.FreeBSD.org/src.git
synced 2024-12-24 11:29:10 +00:00
1130b656e5
This will make a number of things easier in the future, as well as (finally!) avoiding the Id-smashing problem which has plagued developers for so long. Boy, I'm glad we're not using sup anymore. This update would have been insane otherwise.
427 lines
12 KiB
C
427 lines
12 KiB
C
/* as.h - global header file
|
||
Copyright (C) 1987, 1990, 1991, 1992 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 2, 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, 675 Mass Ave, Cambridge, MA 02139, USA. */
|
||
|
||
/*
|
||
* $FreeBSD$
|
||
*/
|
||
|
||
#define GAS 1
|
||
/* #include <ansidecl.h> */
|
||
#include "host.h"
|
||
#include "flonum.h"
|
||
|
||
#if __STDC__ != 1
|
||
#define volatile /**/
|
||
#ifndef const
|
||
#define const /**/
|
||
#endif /* const */
|
||
#endif /* __STDC__ */
|
||
|
||
#ifdef __GNUC__
|
||
#define alloca __builtin_alloca
|
||
#define register
|
||
#endif /* __GNUC__ */
|
||
|
||
#ifndef __LINE__
|
||
#define __LINE__ "unknown"
|
||
#endif /* __LINE__ */
|
||
|
||
#ifndef __FILE__
|
||
#define __FILE__ "unknown"
|
||
#endif /* __FILE__ */
|
||
|
||
#ifndef PARAMS
|
||
#if __STDC__ != 1
|
||
#define PARAMS(x) ()
|
||
#else
|
||
#define PARAMS(x) x
|
||
#endif
|
||
#endif /*PARAMS */
|
||
|
||
/*
|
||
* I think this stuff is largely out of date. xoxorich.
|
||
*
|
||
* CAPITALISED names are #defined.
|
||
* "lowercaseH" is #defined if "lowercase.h" has been #include-d.
|
||
* "lowercaseT" is a typedef of "lowercase" objects.
|
||
* "lowercaseP" is type "pointer to object of type 'lowercase'".
|
||
* "lowercaseS" is typedef struct ... lowercaseS.
|
||
*
|
||
* #define DEBUG to enable all the "know" assertion tests.
|
||
* #define SUSPECT when debugging.
|
||
* #define COMMON as "extern" for all modules except one, where you #define
|
||
* COMMON as "".
|
||
* If TEST is #defined, then we are testing a module: #define COMMON as "".
|
||
*/
|
||
|
||
/* These #defines are for parameters of entire assembler. */
|
||
|
||
/* #define SUSPECT JF remove for speed testing */
|
||
/* These #includes are for type definitions etc. */
|
||
|
||
#include <stdio.h>
|
||
#include <assert.h>
|
||
#include <string.h>
|
||
|
||
#define obstack_chunk_alloc xmalloc
|
||
#define obstack_chunk_free xfree
|
||
|
||
#define xfree free
|
||
|
||
#define BAD_CASE(value) \
|
||
{ \
|
||
as_fatal("Case value %d unexpected at line %d of file \"%s\"\n", \
|
||
value, __LINE__, __FILE__); \
|
||
}
|
||
|
||
|
||
/* These are assembler-wide concepts */
|
||
|
||
|
||
#ifndef COMMON
|
||
#ifdef TEST
|
||
#define COMMON /* declare our COMMONs storage here. */
|
||
#else
|
||
#define COMMON extern /* our commons live elswhere */
|
||
#endif
|
||
#endif
|
||
/* COMMON now defined */
|
||
#define DEBUG /* temporary */
|
||
|
||
#ifdef DEBUG
|
||
#undef NDEBUG
|
||
#ifndef know
|
||
#define know(p) assert(p) /* Verify our assumptions! */
|
||
#endif /* not yet defined */
|
||
#else
|
||
#define know(p) /* know() checks are no-op.ed */
|
||
#endif
|
||
|
||
/* input_scrub.c */
|
||
|
||
/*
|
||
* Supplies sanitised buffers to read.c.
|
||
* Also understands printing line-number part of error messages.
|
||
*/
|
||
|
||
|
||
/* subsegs.c Sub-segments. Also, segment(=expression type)s.*/
|
||
|
||
/*
|
||
* This table describes the use of segments as EXPRESSION types.
|
||
*
|
||
* X_seg X_add_symbol X_subtract_symbol X_add_number
|
||
* SEG_ABSENT no (legal) expression
|
||
* SEG_PASS1 no (defined) "
|
||
* SEG_BIG * > 32 bits const.
|
||
* SEG_ABSOLUTE 0
|
||
* SEG_DATA * 0
|
||
* SEG_TEXT * 0
|
||
* SEG_BSS * 0
|
||
* SEG_UNKNOWN * 0
|
||
* SEG_DIFFERENCE 0 * 0
|
||
* SEG_REGISTER *
|
||
*
|
||
* The blank fields MUST be 0, and are nugatory.
|
||
* The '0' fields MAY be 0. The '*' fields MAY NOT be 0.
|
||
*
|
||
* SEG_BIG: X_add_number is < 0 if the result is in
|
||
* generic_floating_point_number. The value is -'c' where c is the
|
||
* character that introduced the constant. e.g. "0f6.9" will have -'f'
|
||
* as a X_add_number value.
|
||
* X_add_number > 0 is a count of how many littlenums it took to
|
||
* represent a bignum.
|
||
* SEG_DIFFERENCE:
|
||
* If segments of both symbols are known, they are the same segment.
|
||
* X_add_symbol != X_sub_symbol (then we just cancel them, => SEG_ABSOLUTE).
|
||
*/
|
||
|
||
|
||
#ifdef MANY_SEGMENTS
|
||
#define N_SEGMENTS 10
|
||
#define SEG_NORMAL(x) ((x) >= SEG_E0 && (x) <= SEG_E9)
|
||
#define SEG_LIST SEG_E0,SEG_E1,SEG_E2,SEG_E3,SEG_E4,SEG_E5,SEG_E6,SEG_E7,SEG_E8,SEG_E9
|
||
#define SEG_DATA SEG_E1
|
||
#define SEG_TEXT SEG_E0
|
||
#define SEG_BSS SEG_E2
|
||
#else
|
||
#define N_SEGMENTS 3
|
||
#define SEG_NORMAL(x) ((x) == SEG_TEXT || (x) == SEG_DATA || (x) == SEG_BSS)
|
||
#define SEG_LIST SEG_TEXT,SEG_DATA,SEG_BSS
|
||
#endif
|
||
|
||
typedef enum _segT {
|
||
SEG_ABSOLUTE = 0,
|
||
SEG_LIST,
|
||
SEG_UNKNOWN,
|
||
SEG_ABSENT, /* Mythical Segment (absent): NO expression seen. */
|
||
SEG_PASS1, /* Mythical Segment: Need another pass. */
|
||
SEG_GOOF, /* Only happens if AS has a logic error. */
|
||
/* Invented so we don't crash printing */
|
||
/* error message involving weird segment. */
|
||
SEG_BIG, /* Bigger than 32 bits constant. */
|
||
SEG_DIFFERENCE, /* Mythical Segment: absolute difference. */
|
||
SEG_DEBUG, /* Debug segment */
|
||
SEG_NTV, /* Transfert vector preload segment */
|
||
SEG_PTV, /* Transfert vector postload segment */
|
||
SEG_REGISTER, /* Mythical: a register-valued expression */
|
||
} segT;
|
||
|
||
#define SEG_MAXIMUM_ORDINAL (SEG_REGISTER)
|
||
|
||
typedef int subsegT;
|
||
|
||
COMMON subsegT now_subseg;
|
||
/* What subseg we are accreting now? */
|
||
|
||
|
||
COMMON segT now_seg;
|
||
/* Segment our instructions emit to. */
|
||
/* Only OK values are SEG_TEXT or SEG_DATA. */
|
||
|
||
|
||
extern char *const seg_name[];
|
||
extern int section_alignment[];
|
||
|
||
|
||
/* relax() */
|
||
|
||
typedef enum _relax_state {
|
||
rs_fill, /* Variable chars to be repeated fr_offset times. Fr_symbol
|
||
unused. Used with fr_offset == 0 for a constant length
|
||
frag. */
|
||
|
||
rs_align, /* Align: Fr_offset: power of 2. 1 variable char: fill
|
||
character. */
|
||
|
||
rs_org, /* Org: Fr_offset, fr_symbol: address. 1 variable char: fill
|
||
character. */
|
||
|
||
rs_machine_dependent,
|
||
|
||
#ifndef WORKING_DOT_WORD
|
||
rs_broken_word, /* JF: gunpoint */
|
||
#endif
|
||
} relax_stateT;
|
||
|
||
/* typedef unsigned char relax_substateT; */
|
||
/* JF this is more likely to leave the end of a struct frag on an align
|
||
boundry. Be very careful with this. */
|
||
typedef unsigned long relax_substateT;
|
||
|
||
typedef unsigned long relax_addressT;/* Enough bits for address. */
|
||
/* Still an integer type. */
|
||
|
||
|
||
/* frags.c */
|
||
|
||
/*
|
||
* A code fragment (frag) is some known number of chars, followed by some
|
||
* unknown number of chars. Typically the unknown number of chars is an
|
||
* instruction address whose size is yet unknown. We always know the greatest
|
||
* possible size the unknown number of chars may become, and reserve that
|
||
* much room at the end of the frag.
|
||
* Once created, frags do not change address during assembly.
|
||
* We chain the frags in (a) forward-linked list(s). The object-file address
|
||
* of the 1st char of a frag is generally not known until after relax().
|
||
* Many things at assembly time describe an address by {object-file-address
|
||
* of a particular frag}+offset.
|
||
|
||
BUG: it may be smarter to have a single pointer off to various different
|
||
notes for different frag kinds. See how code pans
|
||
*/
|
||
struct frag /* a code fragment */
|
||
{
|
||
unsigned long fr_address; /* Object file address. */
|
||
struct frag *fr_next; /* Chain forward; ascending address order. */
|
||
/* Rooted in frch_root. */
|
||
|
||
long fr_fix; /* (Fixed) number of chars we know we have. */
|
||
/* May be 0. */
|
||
long fr_var; /* (Variable) number of chars after above. */
|
||
/* May be 0. */
|
||
struct symbol *fr_symbol; /* For variable-length tail. */
|
||
long fr_offset; /* For variable-length tail. */
|
||
char *fr_opcode; /*->opcode low addr byte,for relax()ation*/
|
||
relax_stateT fr_type; /* What state is my tail in? */
|
||
relax_substateT fr_subtype;
|
||
/* These are needed only on the NS32K machines */
|
||
char fr_pcrel_adjust;
|
||
char fr_bsr;
|
||
#ifndef NO_LISTING
|
||
struct list_info_struct *line;
|
||
#endif
|
||
char fr_literal[1]; /* Chars begin here. */
|
||
/* One day we will compile fr_literal[0]. */
|
||
};
|
||
#define SIZEOF_STRUCT_FRAG \
|
||
((int)zero_address_frag.fr_literal-(int)&zero_address_frag)
|
||
/* We want to say fr_literal[0] above. */
|
||
|
||
typedef struct frag fragS;
|
||
|
||
COMMON fragS *frag_now; /* -> current frag we are building. */
|
||
/* This frag is incomplete. */
|
||
/* It is, however, included in frchain_now. */
|
||
/* Frag_now->fr_fix is bogus. Use: */
|
||
/* Virtual frag_now->fr_fix == obstack_next_free(&frags)-frag_now->fr_literal.*/
|
||
|
||
COMMON fragS zero_address_frag; /* For foreign-segment symbol fixups. */
|
||
COMMON fragS bss_address_frag; /* For local common (N_BSS segment) fixups. */
|
||
|
||
/* main program "as.c" (command arguments etc) */
|
||
|
||
COMMON char
|
||
flagseen[128]; /* ['x'] TRUE if "-x" seen. */
|
||
|
||
COMMON char *
|
||
out_file_name; /* name of emitted object file */
|
||
|
||
COMMON int need_pass_2; /* TRUE if we need a second pass. */
|
||
|
||
COMMON int picmode; /* TRUE if "-k" or "-K" seen. */
|
||
|
||
typedef struct {
|
||
char * poc_name; /* assembler mnemonic, lower case, no '.' */
|
||
void (*poc_handler)(); /* Do the work */
|
||
int poc_val; /* Value to pass to handler */
|
||
} pseudo_typeS;
|
||
|
||
#if (__STDC__ == 1) & !defined(NO_STDARG)
|
||
|
||
int had_errors(void);
|
||
int had_warnings(void);
|
||
void as_bad(const char *Format, ...);
|
||
void as_fatal(const char *Format, ...);
|
||
void as_tsktsk(const char *Format, ...);
|
||
void as_warn(const char *Format, ...);
|
||
|
||
#else
|
||
|
||
int had_errors();
|
||
int had_warnings();
|
||
void as_bad();
|
||
void as_fatal();
|
||
void as_tsktsk();
|
||
void as_warn();
|
||
|
||
#endif /* __STDC__ & !NO_STDARG */
|
||
|
||
#if __STDC__ == 1
|
||
|
||
char *app_push(void);
|
||
char *atof_ieee(char *str, int what_kind, LITTLENUM_TYPE *words);
|
||
char *input_scrub_include_file(char *filename, char *position);
|
||
char *input_scrub_new_file(char *filename);
|
||
char *input_scrub_next_buffer(char **bufp);
|
||
char *strstr(const char *s, const char *wanted);
|
||
char *xmalloc(int size);
|
||
char *xrealloc(char *ptr, long n);
|
||
int do_scrub_next_char(int (*get)(), void (*unget)());
|
||
int gen_to_words(LITTLENUM_TYPE *words, int precision, long exponent_bits);
|
||
int had_err(void);
|
||
int had_errors(void);
|
||
int had_warnings(void);
|
||
int ignore_input(void);
|
||
int scrub_from_file(void);
|
||
int scrub_from_file(void);
|
||
int scrub_from_string(void);
|
||
int seen_at_least_1_file(void);
|
||
void app_pop(char *arg);
|
||
void as_howmuch(FILE *stream);
|
||
void as_perror(const char *gripe, const char *filename);
|
||
void as_where(char **, unsigned int *);
|
||
void bump_line_counters(void);
|
||
void do_scrub_begin(void);
|
||
void input_scrub_begin(void);
|
||
void input_scrub_close(void);
|
||
void input_scrub_end(void);
|
||
void int_to_gen(long x);
|
||
void new_logical_line(char *fname, int line_number);
|
||
void scrub_to_file(int ch);
|
||
void scrub_to_string(int ch);
|
||
void subseg_change(segT seg, int subseg);
|
||
void subseg_new(segT seg, subsegT subseg);
|
||
void subsegs_begin(void);
|
||
|
||
#else /* not __STDC__ */
|
||
|
||
char *app_push();
|
||
char *atof_ieee();
|
||
char *input_scrub_include_file();
|
||
char *input_scrub_new_file();
|
||
char *input_scrub_next_buffer();
|
||
char *strstr();
|
||
char *xmalloc();
|
||
char *xrealloc();
|
||
int do_scrub_next_char();
|
||
int gen_to_words();
|
||
int had_err();
|
||
int had_errors();
|
||
int had_warnings();
|
||
int ignore_input();
|
||
int scrub_from_file();
|
||
int scrub_from_file();
|
||
int scrub_from_string();
|
||
int seen_at_least_1_file();
|
||
void app_pop();
|
||
void as_howmuch();
|
||
void as_perror();
|
||
void as_where();
|
||
void bump_line_counters();
|
||
void do_scrub_begin();
|
||
void input_scrub_begin();
|
||
void input_scrub_close();
|
||
void input_scrub_end();
|
||
void int_to_gen();
|
||
void new_logical_line();
|
||
void scrub_to_file();
|
||
void scrub_to_string();
|
||
void subseg_change();
|
||
void subseg_new();
|
||
void subsegs_begin();
|
||
|
||
#endif /* not __STDC__ */
|
||
|
||
/* this one starts the chain of target dependant headers */
|
||
#include "targ-env.h"
|
||
|
||
/* these define types needed by the interfaces */
|
||
#include "struc-symbol.h"
|
||
#include "write.h"
|
||
#include "expr.h"
|
||
#include "frags.h"
|
||
#include "hash.h"
|
||
#include "read.h"
|
||
#include "symbols.h"
|
||
|
||
#include "tc.h"
|
||
#include "obj.h"
|
||
|
||
#include "listing.h"
|
||
|
||
/*
|
||
* Local Variables:
|
||
* comment-column: 0
|
||
* fill-column: 131
|
||
* End:
|
||
*/
|
||
|
||
/* end of as.h */
|