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buildtools/binutils/gas/as.h
Niels Sascha Reedijk a635d7fb9b import binutils 2.41
2023-08-05 16:18:06 +01:00

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/* as.h - global header file
Copyright (C) 1987-2023 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 3, 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, 51 Franklin Street - Fifth Floor, Boston, MA
02110-1301, USA. */
#ifndef GAS
#define GAS 1
/* I think this stuff is largely out of date.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 hash code.
#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 "". */
#include "config.h"
/* Now, tend to the rest of the configuration. */
/* System include files first... */
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#ifdef HAVE_UNISTD_H
#include <unistd.h>
#endif
#ifdef HAVE_SYS_TYPES_H
/* for size_t, pid_t */
#include <sys/types.h>
#endif
#include <errno.h>
#include <stdarg.h>
#include "getopt.h"
/* The first getopt value for machine-independent long options.
150 isn't special; it's just an arbitrary non-ASCII char value. */
#define OPTION_STD_BASE 150
/* The first getopt value for machine-dependent long options.
290 gives the standard options room to grow. */
#define OPTION_MD_BASE 290
#ifdef DEBUG
#undef NDEBUG
#endif
#if __GNUC__ < 2 || (__GNUC__ == 2 && __GNUC_MINOR__ < 6)
#define __PRETTY_FUNCTION__ ((char *) NULL)
#endif
#define gas_assert(P) ((void) ((P) ? 0 : (abort (), 0)))
#undef abort
#define abort() as_abort (__FILE__, __LINE__, __PRETTY_FUNCTION__)
/* Now GNU header files... */
#include "ansidecl.h"
#include "bfd.h"
#include "libiberty.h"
/* Other stuff from config.h. */
#ifdef NEED_DECLARATION_ENVIRON
extern char **environ;
#endif
#ifdef NEED_DECLARATION_FFS
extern int ffs (int);
#endif
#if !HAVE_DECL_MEMPCPY
void *mempcpy(void *, const void *, size_t);
#endif
#ifndef __LINE__
#define __LINE__ "unknown"
#endif /* __LINE__ */
#ifndef __FILE__
#define __FILE__ "unknown"
#endif /* __FILE__ */
#ifndef FOPEN_WB
#ifdef USE_BINARY_FOPEN
#include "fopen-bin.h"
#else
#include "fopen-same.h"
#endif
#endif
#ifndef EXIT_SUCCESS
#define EXIT_SUCCESS 0
#define EXIT_FAILURE 1
#endif
#ifndef SEEK_SET
#define SEEK_SET 0
#endif
#define obstack_chunk_alloc xmalloc
#define obstack_chunk_free xfree
#define xfree free
#if GCC_VERSION >= 7000
#define gas_mul_overflow(a, b, res) __builtin_mul_overflow (a, b, res)
#else
/* Assumes unsigned values. Careful! Args evaluated multiple times. */
#define gas_mul_overflow(a, b, res) \
((*res) = (a), (*res) *= (b), (b) != 0 && (*res) / (b) != (a))
#endif
#include "asintl.h"
#define BAD_CASE(val) \
{ \
as_fatal (_("Case value %ld unexpected at line %d of file \"%s\"\n"), \
(long) val, __LINE__, __FILE__); \
}
#include "flonum.h"
/* These are assembler-wide concepts */
extern bfd *stdoutput;
typedef bfd_vma addressT;
typedef bfd_signed_vma offsetT;
/* Type of symbol value, etc. For use in prototypes. */
typedef addressT valueT;
#ifndef COMMON
#ifdef TEST
#define COMMON /* Declare our COMMONs storage here. */
#else
#define COMMON extern /* Our commons live elsewhere. */
#endif
#endif
/* COMMON now defined */
#ifndef ENABLE_CHECKING
#define ENABLE_CHECKING 0
#endif
#if ENABLE_CHECKING || defined (DEBUG)
#ifndef know
#define know(p) gas_assert(p) /* Verify our assumptions! */
#endif /* not yet defined */
#else
#define know(p) do {} while (0) /* 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.*/
typedef asection *segT;
#define SEG_NORMAL(SEG) ( (SEG) != absolute_section \
&& (SEG) != undefined_section \
&& (SEG) != reg_section \
&& (SEG) != expr_section)
typedef int subsegT;
/* What subseg we are accessing now? */
COMMON subsegT now_subseg;
/* Segment our instructions emit to. */
COMMON segT now_seg;
#define segment_name(SEG) bfd_section_name (SEG)
extern segT reg_section, expr_section;
/* Shouldn't these be eliminated someday? */
extern segT text_section, data_section, bss_section;
#define absolute_section bfd_abs_section_ptr
#define undefined_section bfd_und_section_ptr
enum _relax_state
{
/* Dummy frag used by listing code. */
rs_dummy = 0,
/* Variable chars to be repeated fr_offset times.
Fr_symbol unused. Used with fr_offset == 0 for a
constant length frag. */
rs_fill,
/* Align. The fr_offset field holds the power of 2 to which to
align. The fr_var field holds the number of characters in the
fill pattern. The fr_subtype field holds the maximum number of
bytes to skip when aligning, or 0 if there is no maximum. */
rs_align,
/* Align code. The fr_offset field holds the power of 2 to which
to align. This type is only generated by machine specific
code, which is normally responsible for handling the fill
pattern. The fr_subtype field holds the maximum number of
bytes to skip when aligning, or 0 if there is no maximum. */
rs_align_code,
/* Test for alignment. Like rs_align, but used by several targets
to warn if data is not properly aligned. */
rs_align_test,
/* Org: Fr_offset, fr_symbol: address. 1 variable char: fill
character. */
rs_org,
#ifndef WORKING_DOT_WORD
/* JF: gunpoint */
rs_broken_word,
#endif
/* Machine specific relaxable (or similarly alterable) instruction. */
rs_machine_dependent,
/* .space directive with expression operand that needs to be computed
later. Similar to rs_org, but different.
fr_symbol: operand
1 variable char: fill character */
rs_space,
/* .nop directive with expression operand that needs to be computed
later. Similar to rs_space, but different. It fills with no-op
instructions.
fr_symbol: operand
1 constant byte: no-op fill control byte. */
rs_space_nop,
/* Similar to rs_fill. It is used to implement .nop directive . */
rs_fill_nop,
/* A DWARF leb128 value; only ELF uses this. The subtype is 0 for
unsigned, 1 for signed. */
rs_leb128,
/* Exception frame information which we may be able to optimize. */
rs_cfa,
/* Cross-fragment dwarf2 line number optimization. */
rs_dwarf2dbg,
/* SFrame FRE type selection optimization. */
rs_sframe
};
typedef enum _relax_state relax_stateT;
/* This type is used in prototypes, so it can't be a type that will be
widened for argument passing. */
typedef unsigned int relax_substateT;
/* Enough bits for address, but still an integer type.
Could be a problem, cross-assembling for 64-bit machines. */
typedef addressT relax_addressT;
struct relax_type
{
/* Forward reach. Signed number. > 0. */
offsetT rlx_forward;
/* Backward reach. Signed number. < 0. */
offsetT rlx_backward;
/* Bytes length of this address. */
unsigned char rlx_length;
/* Next longer relax-state. 0 means there is no 'next' relax-state. */
relax_substateT rlx_more;
};
typedef struct relax_type relax_typeS;
/* main program "as.c" (command arguments etc). */
COMMON unsigned char flag_no_comments; /* -f */
COMMON unsigned char flag_debug; /* -D */
COMMON unsigned char flag_signed_overflow_ok; /* -J */
#ifndef WORKING_DOT_WORD
COMMON unsigned char flag_warn_displacement; /* -K */
#endif
/* True if local symbols should be retained. */
COMMON int flag_keep_locals; /* -L */
/* True if we are assembling in MRI mode. */
COMMON int flag_mri;
/* True if alternate macro mode is in effect. */
COMMON bool flag_macro_alternate;
/* Should the data section be made read-only and appended to the text
section? */
COMMON unsigned char flag_readonly_data_in_text; /* -R */
/* True if warnings should be inhibited. */
COMMON int flag_no_warnings; /* -W */
/* True if warnings count as errors. */
COMMON int flag_fatal_warnings; /* --fatal-warnings */
/* True if we should attempt to generate output even if non-fatal errors
are detected. */
COMMON unsigned char flag_always_generate_output; /* -Z */
/* This is true if the assembler should output time and space usage. */
COMMON unsigned char flag_print_statistics;
/* True if local absolute symbols are to be stripped. */
COMMON int flag_strip_local_absolute;
/* True if we should generate a traditional format object file. */
COMMON int flag_traditional_format;
/* Type of compressed debug sections we should generate. */
COMMON enum compressed_debug_section_type flag_compress_debug;
/* TRUE if .note.GNU-stack section with SEC_CODE should be created */
COMMON int flag_execstack;
/* TRUE if .note.GNU-stack section with SEC_CODE should be created */
COMMON int flag_noexecstack;
/* TRUE if .sframe section should be created. */
COMMON int flag_gen_sframe;
/* name of emitted object file */
COMMON const char *out_file_name;
/* Keep the output file. */
COMMON int keep_it;
/* name of file defining extensions to the basic instruction set */
COMMON char *insttbl_file_name;
/* TRUE if we need a second pass. */
COMMON int need_pass_2;
/* TRUE if we should do no relaxing, and
leave lots of padding. */
COMMON int linkrelax;
COMMON int do_not_pad_sections_to_alignment;
enum multibyte_input_handling
{
multibyte_allow = 0,
multibyte_warn,
multibyte_warn_syms
};
COMMON enum multibyte_input_handling multibyte_handling;
/* TRUE if we should produce a listing. */
extern int listing;
/* Type of debugging information we should generate. We currently support
stabs, ECOFF, and DWARF2.
NOTE! This means debug information about the assembly source code itself
and _not_ about possible debug information from a high-level language.
This is especially relevant to DWARF2, since the compiler may emit line
number directives that the assembler resolves. */
enum debug_info_type
{
DEBUG_UNSPECIFIED,
DEBUG_NONE,
DEBUG_STABS,
DEBUG_ECOFF,
DEBUG_DWARF,
DEBUG_DWARF2,
DEBUG_CODEVIEW
};
extern enum debug_info_type debug_type;
extern int use_gnu_debug_info_extensions;
COMMON bool flag_dwarf_sections;
extern int flag_dwarf_cie_version;
extern unsigned int dwarf_level;
/* Maximum level of macro nesting. */
extern int max_macro_nest;
/* Verbosity level. */
extern int verbose;
struct obstack;
/* Obstack chunk size. Keep large for efficient space use, make small to
increase malloc calls for monitoring memory allocation. */
extern int chunksize;
struct _pseudo_type
{
/* assembler mnemonic, lower case, no '.' */
const char *poc_name;
/* Do the work */
void (*poc_handler) (int);
/* Value to pass to handler */
int poc_val;
};
typedef struct _pseudo_type pseudo_typeS;
#if (__GNUC__ >= 2) && !defined(VMS)
/* for use with -Wformat */
#if __GNUC__ == 2 && __GNUC_MINOR__ < 6
/* Support for double underscores in attribute names was added in gcc
2.6, so avoid them if we are using an earlier version. */
#define __printf__ printf
#define __format__ format
#endif
#define PRINTF_LIKE(FCN) \
void FCN (const char *format, ...) \
__attribute__ ((__format__ (__printf__, 1, 2)))
#define PRINTF_WHERE_LIKE(FCN) \
void FCN (const char *file, unsigned int line, const char *format, ...) \
__attribute__ ((__format__ (__printf__, 3, 4)))
#define PRINTF_INDENT_LIKE(FCN) \
void FCN (const char *file, unsigned int line, unsigned int indent, \
const char *format, ...) \
__attribute__ ((__format__ (__printf__, 4, 5)))
#else /* __GNUC__ < 2 || defined(VMS) */
#define PRINTF_LIKE(FCN) void FCN (const char *format, ...)
#define PRINTF_WHERE_LIKE(FCN) void FCN (const char *file, \
unsigned int line, \
const char *format, ...)
#define PRINTF_INDENT_LIKE(FCN) void FCN (const char *file, \
unsigned int line, \
unsigned int indent, \
const char *format, ...)
#endif /* __GNUC__ < 2 || defined(VMS) */
PRINTF_LIKE (as_bad);
PRINTF_LIKE (as_fatal) ATTRIBUTE_NORETURN;
PRINTF_LIKE (as_tsktsk);
PRINTF_LIKE (as_warn);
PRINTF_WHERE_LIKE (as_bad_where);
PRINTF_WHERE_LIKE (as_warn_where);
PRINTF_INDENT_LIKE (as_info_where);
void as_abort (const char *, int, const char *) ATTRIBUTE_NORETURN;
void signal_init (void);
int had_errors (void);
int had_warnings (void);
void as_warn_value_out_of_range (const char *, offsetT, offsetT, offsetT,
const char *, unsigned);
void as_bad_value_out_of_range (const char *, offsetT, offsetT, offsetT,
const char *, unsigned);
void print_version_id (void);
char * app_push (void);
/* Number of littlenums required to hold an extended precision number. */
#define MAX_LITTLENUMS 6
char * atof_ieee (char *, int, LITTLENUM_TYPE *);
char * atof_ieee_detail (char *, int, int, LITTLENUM_TYPE *, FLONUM_TYPE *);
const char * ieee_md_atof (int, char *, int *, bool);
const char * vax_md_atof (int, char *, int *);
char * input_scrub_include_file (const char *, char *);
void input_scrub_insert_line (const char *);
void input_scrub_insert_file (char *);
char * input_scrub_new_file (const char *);
char * input_scrub_next_buffer (char **bufp);
size_t do_scrub_chars (size_t (*get) (char *, size_t), char *, size_t);
size_t do_scrub_pending (void);
bool scan_for_multibyte_characters (const unsigned char *, const unsigned char *, bool);
int gen_to_words (LITTLENUM_TYPE *, int, long);
int had_err (void);
int ignore_input (void);
void cond_finish_check (int);
void cond_exit_macro (int);
int seen_at_least_1_file (void);
void app_pop (char *);
void as_report_context (void);
const char * as_where (unsigned int *);
const char * as_where_top (unsigned int *);
const char * as_where_physical (unsigned int *);
void bump_line_counters (void);
void do_scrub_begin (int);
void input_scrub_begin (void);
void input_scrub_close (void);
void input_scrub_end (void);
void new_logical_line (const char *, int);
void new_logical_line_flags (const char *, int, int);
void subsegs_begin (void);
void subsegs_end (struct obstack **);
void subseg_change (segT, int);
segT subseg_new (const char *, subsegT);
segT subseg_force_new (const char *, subsegT);
void subseg_set (segT, subsegT);
int subseg_text_p (segT);
int seg_not_empty_p (segT);
void start_dependencies (char *);
void register_dependency (const char *);
void print_dependencies (void);
segT subseg_get (const char *, int);
char *remap_debug_filename (const char *);
void add_debug_prefix_map (const char *);
static inline char *
xmemdup0 (const char *in, size_t len)
{
return xmemdup (in, len, len + 1);
}
struct expressionS;
struct fix;
typedef struct symbol symbolS;
typedef struct frag fragS;
/* literal.c */
valueT add_to_literal_pool (symbolS *, valueT, segT, int);
int check_eh_frame (struct expressionS *, unsigned int *);
int eh_frame_estimate_size_before_relax (fragS *);
int eh_frame_relax_frag (fragS *);
void eh_frame_convert_frag (fragS *);
void eh_begin (void);
int generic_force_reloc (struct fix *);
/* SFrame FRE optimization. */
int sframe_estimate_size_before_relax (fragS *);
int sframe_relax_frag (fragS *);
void sframe_convert_frag (fragS *);
#include "expr.h" /* Before targ-*.h */
/* This one starts the chain of target dependent headers. */
#include "targ-env.h"
#ifdef OBJ_MAYBE_ELF
#define IS_ELF (OUTPUT_FLAVOR == bfd_target_elf_flavour)
#else
#ifdef OBJ_ELF
#define IS_ELF 1
#else
#define IS_ELF 0
#endif
#endif
#include "write.h"
#include "frags.h"
#include "read.h"
#include "symbols.h"
#include "hashtab.h"
#include "hash.h"
#include "tc.h"
#include "obj.h"
#ifdef USE_EMULATIONS
#include "emul.h"
#endif
#include "listing.h"
#ifdef H_TICK_HEX
extern int enable_h_tick_hex;
#endif
#ifdef TC_M68K
/* True if we are assembling in m68k MRI mode. */
COMMON int flag_m68k_mri;
#define DOLLAR_AMBIGU flag_m68k_mri
#else
#define flag_m68k_mri 0
#endif
#ifndef TC_STRING_ESCAPES
#define TC_STRING_ESCAPES 1
#endif
#ifdef WARN_COMMENTS
COMMON int warn_comment;
COMMON unsigned int found_comment;
COMMON const char * found_comment_file;
#endif
#if defined OBJ_ELF || defined OBJ_MAYBE_ELF
/* If .size directive failure should be error or warning. */
COMMON int flag_allow_nonconst_size;
/* If we should generate ELF common symbols with the STT_COMMON type. */
extern int flag_use_elf_stt_common;
/* TRUE iff GNU Build attribute notes should
be generated if none are in the input files. */
extern bool flag_generate_build_notes;
/* If section name substitution sequences should be honored */
COMMON int flag_sectname_subst;
#endif
#ifndef DOLLAR_AMBIGU
#define DOLLAR_AMBIGU 0
#endif
#ifndef NUMBERS_WITH_SUFFIX
#define NUMBERS_WITH_SUFFIX 0
#endif
#ifndef LOCAL_LABELS_DOLLAR
#define LOCAL_LABELS_DOLLAR 0
#endif
#ifndef LOCAL_LABELS_FB
#define LOCAL_LABELS_FB 0
#endif
#ifndef LABELS_WITHOUT_COLONS
#define LABELS_WITHOUT_COLONS 0
#endif
#ifndef NO_PSEUDO_DOT
#define NO_PSEUDO_DOT 0
#endif
#ifndef TEXT_SECTION_NAME
#define TEXT_SECTION_NAME ".text"
#define DATA_SECTION_NAME ".data"
#define BSS_SECTION_NAME ".bss"
#endif
#ifndef OCTETS_PER_BYTE_POWER
#define OCTETS_PER_BYTE_POWER 0
#endif
#ifndef OCTETS_PER_BYTE
#define OCTETS_PER_BYTE (1<<OCTETS_PER_BYTE_POWER)
#endif
#if OCTETS_PER_BYTE != (1<<OCTETS_PER_BYTE_POWER)
#error "Octets per byte conflicts with its power-of-two definition!"
#endif
#if defined OBJ_ELF || defined OBJ_MAYBE_ELF
/* On ELF platforms, mark debug sections with SEC_ELF_OCTETS */
#define SEC_OCTETS (IS_ELF ? SEC_ELF_OCTETS : 0)
#else
#define SEC_OCTETS 0
#endif
#define POISON_BFD_BOOLEAN 1
#endif /* GAS */
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