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/* BFD XCOFF object file private structure.
Copyright (C) 2001-2021 Free Software Foundation, Inc.
Written by Tom Rix, Redhat.
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 LIBXCOFF_H
#define LIBXCOFF_H
/* This is the backend information kept for XCOFF files. This
structure is constant for a particular backend. The first element
is the COFF backend data structure, so that XCOFF targets can use
the generic COFF code. */
struct xcoff_backend_data_rec
{
/* COFF backend information. */
bfd_coff_backend_data coff;
/* Magic number. */
unsigned short _xcoff_magic_number;
/* Architecture and machine for coff_set_arch_mach_hook. */
enum bfd_architecture _xcoff_architecture;
long _xcoff_machine;
/* Function pointers to xcoff specific swap routines. */
void (* _xcoff_swap_ldhdr_in) (bfd *, const void *, struct internal_ldhdr *);
void (* _xcoff_swap_ldhdr_out)(bfd *, const struct internal_ldhdr *, void *);
void (* _xcoff_swap_ldsym_in) (bfd *, const void *, struct internal_ldsym *);
void (* _xcoff_swap_ldsym_out)(bfd *, const struct internal_ldsym *, void *);
void (* _xcoff_swap_ldrel_in) (bfd *, const void *, struct internal_ldrel *);
void (* _xcoff_swap_ldrel_out)(bfd *, const struct internal_ldrel *, void *);
/* Size of the external struct. */
unsigned int _xcoff_ldhdrsz;
unsigned int _xcoff_ldsymsz;
unsigned int _xcoff_ldrelsz;
/* Size an entry in a descriptor section. */
unsigned int _xcoff_function_descriptor_size;
/* Size of the small aout file header. */
unsigned int _xcoff_small_aout_header_size;
/* Loader version
1 : XCOFF32
2 : XCOFF64. */
unsigned long _xcoff_ldhdr_version;
bool (* _xcoff_put_symbol_name)
(struct bfd_link_info *, struct bfd_strtab_hash *,
struct internal_syment *, const char *);
bool (* _xcoff_put_ldsymbol_name)
(bfd *, struct xcoff_loader_info *, struct internal_ldsym *,
const char *);
reloc_howto_type *_xcoff_dynamic_reloc;
asection * (* _xcoff_create_csect_from_smclas)
(bfd *, union internal_auxent *, const char *);
/* Line number and relocation overflow.
XCOFF32 overflows to another section when the line number or the
relocation count exceeds 0xffff. XCOFF64 does not overflow. */
bool (*_xcoff_is_lineno_count_overflow) (bfd *, bfd_vma);
bool (*_xcoff_is_reloc_count_overflow) (bfd *, bfd_vma);
/* Loader section symbol and relocation table offset
XCOFF32 is after the .loader header
XCOFF64 is offset in .loader header. */
bfd_vma (*_xcoff_loader_symbol_offset) (bfd *, struct internal_ldhdr *);
bfd_vma (*_xcoff_loader_reloc_offset) (bfd *, struct internal_ldhdr *);
/* Global linkage. The first word of global linkage code must be be
modified by filling in the correct TOC offset. */
const unsigned long *_xcoff_glink_code;
/* Size of the global link code in bytes of the xcoff_glink_code table. */
unsigned long _xcoff_glink_size;
/* rtinit. */
unsigned int _xcoff_rtinit_size;
bool (*_xcoff_generate_rtinit)
(bfd *, const char *, const char *, bool);
};
/* Look up an entry in an XCOFF link hash table. */
#define xcoff_link_hash_lookup(table, string, create, copy, follow) \
((struct xcoff_link_hash_entry *) \
bfd_link_hash_lookup (&(table)->root, (string), (create), (copy),\
(follow)))
/* Traverse an XCOFF link hash table. */
#define xcoff_link_hash_traverse(table, func, info) \
(bfd_link_hash_traverse \
(&(table)->root, \
(bool (*) (struct bfd_link_hash_entry *, void *)) (func), \
(info)))
/* Get the XCOFF link hash table from the info structure. This is
just a cast. */
#define xcoff_hash_table(p) ((struct xcoff_link_hash_table *) ((p)->hash))
#define xcoff_backend(abfd) \
((struct xcoff_backend_data_rec *) (abfd)->xvec->backend_data)
#define bfd_xcoff_magic_number(a) ((xcoff_backend (a)->_xcoff_magic_number))
#define bfd_xcoff_architecture(a) ((xcoff_backend (a)->_xcoff_architecture))
#define bfd_xcoff_machine(a) ((xcoff_backend (a)->_xcoff_machine))
#define bfd_xcoff_swap_ldhdr_in(a, b, c) \
((xcoff_backend (a)->_xcoff_swap_ldhdr_in) ((a), (b), (c)))
#define bfd_xcoff_swap_ldhdr_out(a, b, c) \
((xcoff_backend (a)->_xcoff_swap_ldhdr_out) ((a), (b), (c)))
#define bfd_xcoff_swap_ldsym_in(a, b, c) \
((xcoff_backend (a)->_xcoff_swap_ldsym_in) ((a), (b), (c)))
#define bfd_xcoff_swap_ldsym_out(a, b, c) \
((xcoff_backend (a)->_xcoff_swap_ldsym_out) ((a), (b), (c)))
#define bfd_xcoff_swap_ldrel_in(a, b, c) \
((xcoff_backend (a)->_xcoff_swap_ldrel_in) ((a), (b), (c)))
#define bfd_xcoff_swap_ldrel_out(a, b, c) \
((xcoff_backend (a)->_xcoff_swap_ldrel_out) ((a), (b), (c)))
#define bfd_xcoff_ldhdrsz(a) ((xcoff_backend (a)->_xcoff_ldhdrsz))
#define bfd_xcoff_ldsymsz(a) ((xcoff_backend (a)->_xcoff_ldsymsz))
#define bfd_xcoff_ldrelsz(a) ((xcoff_backend (a)->_xcoff_ldrelsz))
#define bfd_xcoff_function_descriptor_size(a) \
((xcoff_backend (a)->_xcoff_function_descriptor_size))
#define bfd_xcoff_small_aout_header_size(a) \
((xcoff_backend (a)->_xcoff_small_aout_header_size))
#define bfd_xcoff_ldhdr_version(a) ((xcoff_backend (a)->_xcoff_ldhdr_version))
#define bfd_xcoff_put_symbol_name(a, b, c, d, e) \
((xcoff_backend (a)->_xcoff_put_symbol_name) ((b), (c), (d), (e)))
#define bfd_xcoff_put_ldsymbol_name(a, b, c, d) \
((xcoff_backend (a)->_xcoff_put_ldsymbol_name) ((a), (b), (c), (d)))
/* Get the XCOFF hash table entries for a BFD. */
#define obj_xcoff_sym_hashes(bfd) \
((struct xcoff_link_hash_entry **) obj_coff_sym_hashes (bfd))
#define bfd_xcoff_dynamic_reloc_howto(a) \
((xcoff_backend (a)->_xcoff_dynamic_reloc))
#define bfd_xcoff_create_csect_from_smclas(a, b, c) \
((xcoff_backend (a)->_xcoff_create_csect_from_smclas((a), (b), (c))))
#define bfd_xcoff_is_lineno_count_overflow(a, b) \
((xcoff_backend (a)->_xcoff_is_lineno_count_overflow((a), (b))))
#define bfd_xcoff_is_reloc_count_overflow(a, b) \
((xcoff_backend (a)->_xcoff_is_reloc_count_overflow((a), (b))))
#define bfd_xcoff_loader_symbol_offset(a, b) \
((xcoff_backend (a)->_xcoff_loader_symbol_offset((a), (b))))
#define bfd_xcoff_loader_reloc_offset(a, b) \
((xcoff_backend (a)->_xcoff_loader_reloc_offset((a), (b))))
#define bfd_xcoff_glink_code(a, b) ((xcoff_backend (a)->_xcoff_glink_code[(b)]))
#define bfd_xcoff_glink_code_size(a) ((xcoff_backend (a)->_xcoff_glink_size))
/* Check for the magic number U803XTOCMAGIC or U64_TOCMAGIC for 64 bit
targets. */
#define bfd_xcoff_is_xcoff64(a) \
( (0x01EF == (bfd_xcoff_magic_number (a))) \
|| (0x01F7 == (bfd_xcoff_magic_number (a))))
/* Check for the magic number U802TOMAGIC for 32 bit targets. */
#define bfd_xcoff_is_xcoff32(a) (0x01DF == (bfd_xcoff_magic_number (a)))
#define bfd_xcoff_rtinit_size(a) ((xcoff_backend (a)->_xcoff_rtinit_size))
#define bfd_xcoff_generate_rtinit(a, b, c, d) ((xcoff_backend (a)->_xcoff_generate_rtinit ((a), (b), (c), (d))))
/* Accessor macros for tdata. */
#define bfd_xcoff_text_align_power(a) ((xcoff_data (a)->text_align_power))
#define bfd_xcoff_data_align_power(a) ((xcoff_data (a)->data_align_power))
/* xcoff*_ppc_relocate_section macros */
#define XCOFF_MAX_CALCULATE_RELOCATION (0x32)
#define XCOFF_MAX_COMPLAIN_OVERFLOW (4)
/* N_ONES produces N one bits, without overflowing machine arithmetic. */
#ifdef N_ONES
#undef N_ONES
#endif
#define N_ONES(n) (((((bfd_vma) 1 << ((n) - 1)) - 1) << 1) | 1)
typedef bool xcoff_reloc_function (bfd *, asection *, bfd *,
struct internal_reloc *,
struct internal_syment *,
struct reloc_howto_struct *,
bfd_vma, bfd_vma,
bfd_vma *, bfd_byte *);
typedef bool xcoff_complain_function (bfd *, bfd_vma, bfd_vma,
struct reloc_howto_struct *);
extern xcoff_reloc_function *const xcoff_calculate_relocation[];
extern xcoff_complain_function *const xcoff_complain_overflow[];
#define XCOFF_NO_LONG_SECTION_NAMES (false), bfd_coff_set_long_section_names_disallowed
/* Relocation functions */
extern xcoff_reloc_function xcoff_reloc_type_noop;
extern xcoff_reloc_function xcoff_reloc_type_fail;
extern xcoff_reloc_function xcoff_reloc_type_pos;
extern xcoff_reloc_function xcoff_reloc_type_neg;
extern xcoff_reloc_function xcoff_reloc_type_rel;
extern xcoff_reloc_function xcoff_reloc_type_toc;
extern xcoff_reloc_function xcoff_reloc_type_ba;
extern xcoff_reloc_function xcoff_reloc_type_crel;
extern xcoff_reloc_function xcoff_reloc_type_tls;
/* Structure to describe dwarf sections.
Useful to convert from XCOFF section name to flag and vice-versa.
Also mark if section has a length field at the beginning. */
struct xcoff_dwsect_name {
/* A XCOFF dwarf section is identified by its name. */
unsigned int flag;
/* Corresponding XCOFF section name. */
const char *name;
/* True if size must be prepended. */
bool def_size;
};
/* Number of entries in the array. The number is known and public so that user
can 'extend' this array by index. */
#define XCOFF_DWSECT_NBR_NAMES 8
/* The dwarf sections array. */
extern const struct xcoff_dwsect_name
xcoff_dwsect_names[XCOFF_DWSECT_NBR_NAMES];
#endif /* LIBXCOFF_H */
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