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

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/* BFD back-end data structures for a.out (and similar) files.
Copyright (C) 1990-2023 Free Software Foundation, Inc.
Written by Cygnus Support.
This file is part of BFD, the Binary File Descriptor library.
This program 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 of the License, or
(at your option) any later version.
This program 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 this program; if not, write to the Free Software
Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
MA 02110-1301, USA. */
#ifndef LIBAOUT_H
#define LIBAOUT_H
/* We try to encapsulate the differences in the various a.out file
variants in a few routines, and otherwise share large masses of code.
This means we only have to fix bugs in one place, most of the time. */
#include "bfdlink.h"
/* Macros for accessing components in an aout header. */
#define H_PUT_64 bfd_h_put_64
#define H_PUT_32 bfd_h_put_32
#define H_PUT_16 bfd_h_put_16
#define H_PUT_8 bfd_h_put_8
#define H_PUT_S64 bfd_h_put_signed_64
#define H_PUT_S32 bfd_h_put_signed_32
#define H_PUT_S16 bfd_h_put_signed_16
#define H_PUT_S8 bfd_h_put_signed_8
#define H_GET_64 bfd_h_get_64
#define H_GET_32 bfd_h_get_32
#define H_GET_16 bfd_h_get_16
#define H_GET_8 bfd_h_get_8
#define H_GET_S64 bfd_h_get_signed_64
#define H_GET_S32 bfd_h_get_signed_32
#define H_GET_S16 bfd_h_get_signed_16
#define H_GET_S8 bfd_h_get_signed_8
/* Parameterize the a.out code based on whether it is being built
for a 32-bit architecture or a 64-bit architecture. */
/* Do not "beautify" the CONCAT* macro args. Traditional C will not
remove whitespace added here, and thus will fail to concatenate
the tokens. */
#if ARCH_SIZE==64
#define GET_WORD H_GET_64
#define GET_SWORD H_GET_S64
#define GET_MAGIC H_GET_32
#define PUT_WORD H_PUT_64
#define PUT_MAGIC H_PUT_32
#ifndef NAME
#define NAME(x,y) CONCAT3 (x,_64_,y)
#endif
#define JNAME(x) CONCAT2 (x,_64)
#define BYTES_IN_WORD 8
#else
#if ARCH_SIZE==16
#define GET_WORD H_GET_16
#define GET_SWORD H_GET_S16
#define GET_MAGIC H_GET_16
#define PUT_WORD H_PUT_16
#define PUT_MAGIC H_PUT_16
#ifndef NAME
#define NAME(x,y) CONCAT3 (x,_16_,y)
#endif
#define JNAME(x) CONCAT2 (x,_16)
#define BYTES_IN_WORD 2
#else /* ARCH_SIZE == 32 */
#define GET_WORD H_GET_32
#define GET_SWORD H_GET_S32
#define GET_MAGIC H_GET_32
#define PUT_WORD H_PUT_32
#define PUT_MAGIC H_PUT_32
#ifndef NAME
#define NAME(x,y) CONCAT3 (x,_32_,y)
#endif
#define JNAME(x) CONCAT2 (x,_32)
#define BYTES_IN_WORD 4
#endif /* ARCH_SIZE==32 */
#endif /* ARCH_SIZE==64 */
/* Declare at file level, since used in parameter lists, which have
weird scope. */
struct external_exec;
struct external_nlist;
struct reloc_ext_external;
struct reloc_std_external;
/* a.out backend linker hash table entries. */
struct aout_link_hash_entry
{
struct bfd_link_hash_entry root;
/* Whether this symbol has been written out. */
bool written;
/* Symbol index in output file. */
int indx;
};
/* a.out backend linker hash table. */
struct aout_link_hash_table
{
struct bfd_link_hash_table root;
};
/* Look up an entry in an a.out link hash table. */
#define aout_link_hash_lookup(table, string, create, copy, follow) \
((struct aout_link_hash_entry *) \
bfd_link_hash_lookup (&(table)->root, (string), (create), (copy), (follow)))
/* Traverse an a.out link hash table. */
#define aout_link_hash_traverse(table, func, info) \
(bfd_link_hash_traverse \
(&(table)->root, \
(bool (*) (struct bfd_link_hash_entry *, void *)) (func), \
(info)))
/* Get the a.out link hash table from the info structure. This is
just a cast. */
#define aout_hash_table(p) ((struct aout_link_hash_table *) ((p)->hash))
/* Back-end information for various a.out targets. */
struct aout_backend_data
{
/* Are ZMAGIC files mapped contiguously? If so, the text section may
need more padding, if the segment size (granularity for memory access
control) is larger than the page size. */
unsigned char zmagic_mapped_contiguous;
/* If this flag is set, ZMAGIC/NMAGIC file headers get mapped in with the
text section, which starts immediately after the file header.
If not, the text section starts on the next page. */
unsigned char text_includes_header;
/* If this flag is set, then if the entry address is not in the
first SEGMENT_SIZE bytes of the text section, it is taken to be
the address of the start of the text section. This can be useful
for kernels. */
unsigned char entry_is_text_address;
/* The value to pass to N_SET_FLAGS. */
unsigned char exec_hdr_flags;
/* If the text section VMA isn't specified, and we need an absolute
address, use this as the default. If we're producing a relocatable
file, zero is always used. */
/* ?? Perhaps a callback would be a better choice? Will this do anything
reasonable for a format that handles multiple CPUs with different
load addresses for each? */
bfd_vma default_text_vma;
/* Callback for setting the page and segment sizes, if they can't be
trivially determined from the architecture. */
bool (*set_sizes) (bfd *);
/* zmagic files only. For go32, the length of the exec header contributes
to the size of the text section in the file for alignment purposes but
does *not* get counted in the length of the text section. */
unsigned char exec_header_not_counted;
/* Callback from the add symbols phase of the linker code to handle
a dynamic object. */
bool (*add_dynamic_symbols)
(bfd *, struct bfd_link_info *, struct external_nlist **,
bfd_size_type *, char **);
/* Callback from the add symbols phase of the linker code to handle
adding a single symbol to the global linker hash table. */
bool (*add_one_symbol)
(struct bfd_link_info *, bfd *, const char *, flagword,
asection *, bfd_vma, const char *, bool, bool,
struct bfd_link_hash_entry **);
/* Called to handle linking a dynamic object. */
bool (*link_dynamic_object)
(struct bfd_link_info *, bfd *);
/* Called for each global symbol being written out by the linker.
This should write out the dynamic symbol information. */
bool (*write_dynamic_symbol)
(bfd *, struct bfd_link_info *, struct aout_link_hash_entry *);
/* If this callback is not NULL, the linker calls it for each reloc.
RELOC is a pointer to the unswapped reloc. If *SKIP is set to
TRUE, the reloc will be skipped. *RELOCATION may be changed to
change the effects of the relocation. */
bool (*check_dynamic_reloc)
(struct bfd_link_info *info, bfd *input_bfd,
asection *input_section, struct aout_link_hash_entry *h,
void * reloc, bfd_byte *contents, bool *skip,
bfd_vma *relocation);
/* Called at the end of a link to finish up any dynamic linking
information. */
bool (*finish_dynamic_link) (bfd *, struct bfd_link_info *);
};
#define aout_backend_info(abfd) \
((const struct aout_backend_data *)((abfd)->xvec->backend_data))
/* This is the layout in memory of a "struct exec" while we process it.
All 'lengths' are given as a number of bytes.
All 'alignments' are for relinkable files only; an alignment of
'n' indicates the corresponding segment must begin at an
address that is a multiple of (2**n). */
struct internal_exec
{
long a_info; /* Magic number and flags, packed. */
bfd_vma a_text; /* Length of text, in bytes. */
bfd_vma a_data; /* Length of data, in bytes. */
bfd_vma a_bss; /* Length of uninitialized data area in mem. */
bfd_vma a_syms; /* Length of symbol table data in file. */
bfd_vma a_entry; /* Start address. */
bfd_vma a_trsize; /* Length of text's relocation info, in bytes. */
bfd_vma a_drsize; /* Length of data's relocation info, in bytes. */
/* Added for i960 */
bfd_vma a_tload; /* Text runtime load address. */
bfd_vma a_dload; /* Data runtime load address. */
unsigned char a_talign; /* Alignment of text segment. */
unsigned char a_dalign; /* Alignment of data segment. */
unsigned char a_balign; /* Alignment of bss segment. */
char a_relaxable; /* Enough info for linker relax. */
};
/* Magic number is written
< MSB >
3130292827262524232221201918171615141312111009080706050403020100
< FLAGS >< MACHINE TYPE >< MAGIC NUMBER > */
/* Magic number for NetBSD is
<MSB >
3130292827262524232221201918171615141312111009080706050403020100
< FLAGS >< MACHINE TYPE >< MAGIC NUMBER > */
enum machine_type
{
M_UNKNOWN = 0,
M_68010 = 1,
M_68020 = 2,
M_SPARC = 3,
/* Skip a bunch so we don't run into any of SUN's numbers. */
/* Make these up for the ns32k. */
M_NS32032 = (64), /* NS32032 running ? */
M_NS32532 = (64 + 5), /* NS32532 running mach. */
M_386 = 100,
M_29K = 101, /* AMD 29000. */
M_386_DYNIX = 102, /* Sequent running dynix. */
M_ARM = 103, /* Advanced Risc Machines ARM. */
M_SPARCLET = 131, /* SPARClet = M_SPARC + 128. */
M_386_NETBSD = 134, /* NetBSD/i386 binary. */
M_68K_NETBSD = 135, /* NetBSD/m68k binary. */
M_68K4K_NETBSD = 136, /* NetBSD/m68k4k binary. */
M_532_NETBSD = 137, /* NetBSD/ns32k binary. */
M_SPARC_NETBSD = 138, /* NetBSD/sparc binary. */
M_PMAX_NETBSD = 139, /* NetBSD/pmax (MIPS little-endian) binary. */
M_VAX_NETBSD = 140, /* NetBSD/vax binary. */
M_ALPHA_NETBSD = 141, /* NetBSD/alpha binary. */
M_ARM6_NETBSD = 143, /* NetBSD/arm32 binary. */
M_SPARCLET_1 = 147, /* 0x93, reserved. */
M_POWERPC_NETBSD = 149, /* NetBSD/powerpc (big-endian) binary. */
M_VAX4K_NETBSD = 150, /* NetBSD/vax 4K pages binary. */
M_MIPS1 = 151, /* MIPS R2000/R3000 binary. */
M_MIPS2 = 152, /* MIPS R4000/R6000 binary. */
M_88K_OPENBSD = 153, /* OpenBSD/m88k binary. */
M_HPPA_OPENBSD = 154, /* OpenBSD/hppa binary. */
M_SPARC64_NETBSD = 156, /* NetBSD/sparc64 binary. */
M_X86_64_NETBSD = 157, /* NetBSD/amd64 binary. */
M_SPARCLET_2 = 163, /* 0xa3, reserved. */
M_SPARCLET_3 = 179, /* 0xb3, reserved. */
M_SPARCLET_4 = 195, /* 0xc3, reserved. */
M_HP200 = 200, /* HP 200 (68010) BSD binary. */
M_HP300 = (300 % 256), /* HP 300 (68020+68881) BSD binary. */
M_HPUX = (0x20c % 256), /* HP 200/300 HPUX binary. */
M_SPARCLET_5 = 211, /* 0xd3, reserved. */
M_SPARCLET_6 = 227, /* 0xe3, reserved. */
/*M_SPARCLET_7 = 243 / * 0xf3, reserved. */
M_SPARCLITE_LE = 243,
M_CRIS = 255 /* Axis CRIS binary. */
};
#define N_DYNAMIC(execp) ((execp)->a_info & 0x80000000)
#ifndef N_MAGIC
# define N_MAGIC(execp) ((execp)->a_info & 0xffff)
#endif
#ifndef N_MACHTYPE
# define N_MACHTYPE(execp) ((enum machine_type)(((execp)->a_info >> 16) & 0xff))
#endif
#ifndef N_FLAGS
# define N_FLAGS(execp) (((execp)->a_info >> 24) & 0xff)
#endif
#ifndef N_SET_INFO
# define N_SET_INFO(execp, magic, type, flags) \
((execp)->a_info = ((magic) & 0xffff) \
| (((int)(type) & 0xff) << 16) \
| (((flags) & 0xffu) << 24))
#endif
#ifndef N_SET_DYNAMIC
# define N_SET_DYNAMIC(execp, dynamic) \
((execp)->a_info = (dynamic) ? (long) ((execp)->a_info | 0x80000000) : \
((execp)->a_info & 0x7fffffff))
#endif
#ifndef N_SET_MAGIC
# define N_SET_MAGIC(execp, magic) \
((execp)->a_info = (((execp)->a_info & 0xffff0000) | ((magic) & 0xffff)))
#endif
#ifndef N_SET_MACHTYPE
# define N_SET_MACHTYPE(execp, machtype) \
((execp)->a_info = \
((execp)->a_info & 0xff00ffff) | ((((int) (machtype)) &0xff) << 16))
#endif
#ifndef N_SET_FLAGS
# define N_SET_FLAGS(execp, flags) \
((execp)->a_info = \
((execp)->a_info & 0x00ffffff) | (((flags) & 0xffu) << 24))
#endif
typedef struct aout_symbol
{
asymbol symbol;
short desc;
char other;
unsigned char type;
} aout_symbol_type;
/* The `tdata' struct for all a.out-like object file formats.
Various things depend on this struct being around any time an a.out
file is being handled. An example is dbxread.c in GDB. */
enum aout_subformat {
default_format = 0,
/* Used on HP 9000/300 running HP/UX. */
gnu_encap_format,
/* Used on Linux, 386BSD, etc. See include/aout/aout64.h. */
q_magic_format
};
enum aout_magic {
undecided_magic = 0,
z_magic,
o_magic,
n_magic,
i_magic
};
struct aoutdata
{
struct internal_exec *hdr; /* Exec file header. */
aout_symbol_type *symbols; /* Symtab for input bfd. */
/* For ease, we do this. */
asection *textsec;
asection *datasec;
asection *bsssec;
/* We remember these offsets so that after check_file_format, we have
no dependencies on the particular format of the exec_hdr. */
file_ptr sym_filepos;
file_ptr str_filepos;
/* Size of a relocation entry in external form. */
unsigned reloc_entry_size;
/* Size of a symbol table entry in external form. */
unsigned symbol_entry_size;
/* Page size - needed for alignment of demand paged files. */
unsigned long page_size;
/* Segment size - needed for alignment of demand paged files. */
unsigned long segment_size;
/* Zmagic disk block size - need to align the start of the text
section in ZMAGIC binaries. Normally the same as page_size. */
unsigned long zmagic_disk_block_size;
unsigned exec_bytes_size;
unsigned vma_adjusted : 1;
/* Used when a bfd supports several highly similar formats. */
enum aout_subformat subformat;
enum aout_magic magic;
/* A buffer for find_nearest_line. */
char *line_buf;
/* The external symbol information. */
struct external_nlist *external_syms;
bfd_size_type external_sym_count;
bfd_window sym_window;
char *external_strings;
bfd_size_type external_string_size;
bfd_window string_window;
struct aout_link_hash_entry **sym_hashes;
/* A pointer for shared library information. */
void * dynamic_info;
/* A mapping from local symbols to offsets into the global offset
table, used when linking on SunOS. This is indexed by the symbol
index. */
bfd_vma *local_got_offsets;
};
struct aout_data_struct
{
struct aoutdata a;
struct internal_exec e;
};
#define adata(bfd) ((bfd)->tdata.aout_data->a)
#define exec_hdr(bfd) (adata (bfd).hdr)
#define obj_aout_symbols(bfd) (adata (bfd).symbols)
#define obj_textsec(bfd) (adata (bfd).textsec)
#define obj_datasec(bfd) (adata (bfd).datasec)
#define obj_bsssec(bfd) (adata (bfd).bsssec)
#define obj_sym_filepos(bfd) (adata (bfd).sym_filepos)
#define obj_str_filepos(bfd) (adata (bfd).str_filepos)
#define obj_reloc_entry_size(bfd) (adata (bfd).reloc_entry_size)
#define obj_symbol_entry_size(bfd) (adata (bfd).symbol_entry_size)
#define obj_aout_subformat(bfd) (adata (bfd).subformat)
#define obj_aout_external_syms(bfd) (adata (bfd).external_syms)
#define obj_aout_external_sym_count(bfd) (adata (bfd).external_sym_count)
#define obj_aout_sym_window(bfd) (adata (bfd).sym_window)
#define obj_aout_external_strings(bfd) (adata (bfd).external_strings)
#define obj_aout_external_string_size(bfd) (adata (bfd).external_string_size)
#define obj_aout_string_window(bfd) (adata (bfd).string_window)
#define obj_aout_sym_hashes(bfd) (adata (bfd).sym_hashes)
#define obj_aout_dynamic_info(bfd) (adata (bfd).dynamic_info)
/* We take the address of the first element of an asymbol to ensure that the
macro is only ever applied to an asymbol. */
#define aout_symbol(asymbol) ((aout_symbol_type *)(&(asymbol)->the_bfd))
/* Information we keep for each a.out section. This is currently only
used by the a.out backend linker. */
struct aout_section_data_struct
{
/* The unswapped relocation entries for this section. */
void * relocs;
};
#define aout_section_data(s) \
((struct aout_section_data_struct *) (s)->used_by_bfd)
#define set_aout_section_data(s,v) \
((s)->used_by_bfd = (void *)&(v)->relocs)
/* Prototype declarations for functions defined in aoutx.h. */
extern bool NAME (aout, squirt_out_relocs)
(bfd *, asection *);
extern bool NAME (aout, make_sections)
(bfd *);
extern bfd_cleanup NAME (aout, some_aout_object_p)
(bfd *, struct internal_exec *, bfd_cleanup (*) (bfd *));
extern bool NAME (aout, mkobject)
(bfd *);
extern enum machine_type NAME (aout, machine_type)
(enum bfd_architecture, unsigned long, bool *);
extern bool NAME (aout, set_arch_mach)
(bfd *, enum bfd_architecture, unsigned long);
extern bool NAME (aout, new_section_hook)
(bfd *, asection *);
extern bool NAME (aout, set_section_contents)
(bfd *, sec_ptr, const void *, file_ptr, bfd_size_type);
extern asymbol * NAME (aout, make_empty_symbol)
(bfd *);
extern bool NAME (aout, translate_symbol_table)
(bfd *, aout_symbol_type *, struct external_nlist *, bfd_size_type,
char *, bfd_size_type, bool);
extern bool NAME (aout, slurp_symbol_table)
(bfd *);
extern bool NAME (aout, write_syms)
(bfd *);
extern void NAME (aout, reclaim_symbol_table)
(bfd *);
extern long NAME (aout, get_symtab_upper_bound)
(bfd *);
extern long NAME (aout, canonicalize_symtab)
(bfd *, asymbol **);
extern void NAME (aout, swap_ext_reloc_in)
(bfd *, struct reloc_ext_external *, arelent *, asymbol **,
bfd_size_type);
extern void NAME (aout, swap_std_reloc_in)
(bfd *, struct reloc_std_external *, arelent *, asymbol **,
bfd_size_type);
extern reloc_howto_type * NAME (aout, reloc_type_lookup)
(bfd *, bfd_reloc_code_real_type);
extern reloc_howto_type * NAME (aout, reloc_name_lookup)
(bfd *, const char *);
extern bool NAME (aout, slurp_reloc_table)
(bfd *, sec_ptr, asymbol **);
extern long NAME (aout, canonicalize_reloc)
(bfd *, sec_ptr, arelent **, asymbol **);
extern long NAME (aout, get_reloc_upper_bound)
(bfd *, sec_ptr);
extern void NAME (aout, reclaim_reloc)
(bfd *, sec_ptr);
extern alent * NAME (aout, get_lineno)
(bfd *, asymbol *);
extern void NAME (aout, print_symbol)
(bfd *, void *, asymbol *, bfd_print_symbol_type);
extern void NAME (aout, get_symbol_info)
(bfd *, asymbol *, symbol_info *);
extern bool NAME (aout, find_nearest_line)
(bfd *, asymbol **, asection *, bfd_vma,
const char **, const char **, unsigned int *, unsigned int *);
extern long NAME (aout, read_minisymbols)
(bfd *, bool, void * *, unsigned int *);
extern asymbol * NAME (aout, minisymbol_to_symbol)
(bfd *, bool, const void *, asymbol *);
extern int NAME (aout, sizeof_headers)
(bfd *, struct bfd_link_info *);
extern bool NAME (aout, adjust_sizes_and_vmas)
(bfd *);
extern void NAME (aout, swap_exec_header_in)
(bfd *, struct external_exec *, struct internal_exec *);
extern void NAME (aout, swap_exec_header_out)
(bfd *, struct internal_exec *, struct external_exec *);
extern struct bfd_hash_entry * NAME (aout, link_hash_newfunc)
(struct bfd_hash_entry *, struct bfd_hash_table *, const char *);
extern bool NAME (aout, link_hash_table_init)
(struct aout_link_hash_table *, bfd *,
struct bfd_hash_entry *(*) (struct bfd_hash_entry *,
struct bfd_hash_table *,
const char *),
unsigned int);
extern struct bfd_link_hash_table * NAME (aout, link_hash_table_create)
(bfd *);
extern bool NAME (aout, link_add_symbols)
(bfd *, struct bfd_link_info *);
extern bool NAME (aout, final_link)
(bfd *, struct bfd_link_info *,
void (*) (bfd *, file_ptr *, file_ptr *, file_ptr *));
extern bool NAME (aout, bfd_free_cached_info)
(bfd *);
#define aout_32_find_inliner_info _bfd_nosymbols_find_inliner_info
#if 0 /* Are these needed? */
#define aout_16_find_inliner_info _bfd_nosymbols_find_inliner_info
#define aout_64_find_inliner_info _bfd_nosymbols_find_inliner_info
#endif
/* A.out uses the generic versions of these routines... */
#define aout_16_get_section_contents _bfd_generic_get_section_contents
#define aout_32_get_section_contents _bfd_generic_get_section_contents
#define aout_64_get_section_contents _bfd_generic_get_section_contents
#ifndef aout_32_bfd_is_local_label_name
#define aout_32_bfd_is_local_label_name bfd_generic_is_local_label_name
#endif
#ifndef aout_32_bfd_is_target_special_symbol
#define aout_32_bfd_is_target_special_symbol _bfd_bool_bfd_asymbol_false
#endif
#ifndef WRITE_HEADERS
#define WRITE_HEADERS(abfd, execp) \
{ \
if (adata(abfd).magic == undecided_magic) \
NAME (aout, adjust_sizes_and_vmas) (abfd); \
\
execp->a_syms = bfd_get_symcount (abfd) * EXTERNAL_NLIST_SIZE; \
execp->a_entry = bfd_get_start_address (abfd); \
\
execp->a_trsize = ((obj_textsec (abfd)->reloc_count) * \
obj_reloc_entry_size (abfd)); \
execp->a_drsize = ((obj_datasec (abfd)->reloc_count) * \
obj_reloc_entry_size (abfd)); \
NAME (aout, swap_exec_header_out) (abfd, execp, & exec_bytes); \
\
if (bfd_seek (abfd, (file_ptr) 0, SEEK_SET) != 0 \
|| bfd_bwrite (& exec_bytes, (bfd_size_type) EXEC_BYTES_SIZE, \
abfd) != EXEC_BYTES_SIZE) \
return false; \
/* Now write out reloc info, followed by syms and strings. */ \
\
if (bfd_get_outsymbols (abfd) != NULL \
&& bfd_get_symcount (abfd) != 0) \
{ \
if (bfd_seek (abfd, (file_ptr) (N_SYMOFF (execp)), SEEK_SET) != 0)\
return false; \
\
if (! NAME (aout, write_syms) (abfd)) \
return false; \
} \
\
if (bfd_seek (abfd, (file_ptr) (N_TRELOFF (execp)), SEEK_SET) != 0) \
return false; \
if (!NAME (aout, squirt_out_relocs) (abfd, obj_textsec (abfd))) \
return false; \
\
if (bfd_seek (abfd, (file_ptr) (N_DRELOFF (execp)), SEEK_SET) != 0) \
return false; \
if (!NAME (aout, squirt_out_relocs) (abfd, obj_datasec (abfd))) \
return false; \
}
#endif
/* Test if a read-only section can be merged with .text. This is
possible if:
1. Section has file contents and is read-only.
2. The VMA of the section is after the end of .text and before
the start of .data.
3. The image is demand-pageable (otherwise, a_text in the header
will not reflect the gap between .text and .data). */
#define aout_section_merge_with_text_p(abfd, sec) \
(((sec)->flags & (SEC_HAS_CONTENTS | SEC_READONLY)) == \
(SEC_HAS_CONTENTS | SEC_READONLY) \
&& obj_textsec (abfd) != NULL \
&& obj_datasec (abfd) != NULL \
&& (sec)->vma >= (obj_textsec (abfd)->vma + \
obj_textsec (abfd)->size) \
&& ((sec)->vma + (sec)->size) <= obj_datasec (abfd)->vma \
&& ((abfd)->flags & D_PAGED) != 0)
#endif /* ! defined (LIBAOUT_H) */
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