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Get most of the stuff needed for Xenon PE in place

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This commit is contained in:
Aiden Isik 2025-01-19 21:47:27 +00:00
parent beb2cdbcda
commit 75a1558f33
16 changed files with 1080 additions and 1 deletions
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/* Modified for Xbox 360 / FreeChainXenon by Aiden Isik, 2025 */
/* BFD back-end for Intel 386 COFF files.
Copyright (C) 1990-2024 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. */
#include "sysdep.h"
#include "bfd.h"
#include "libbfd.h"
#include "coff/xenon.h"
#include "coff/internal.h"
#ifdef COFF_WITH_PE
#include "coff/pe.h"
#endif
#ifndef bfd_pe_print_pdata
#define bfd_pe_print_pdata NULL
#endif
#include "libcoff.h"
/* All users of this file have bfd_octets_per_byte (abfd, sec) == 1. */
#define OCTETS_PER_BYTE(ABFD, SEC) 1
static reloc_howto_type *coff_xenon_rtype_to_howto
(bfd *, asection *, struct internal_reloc *,
struct coff_link_hash_entry *, struct internal_syment *,
bfd_vma *);
static reloc_howto_type *coff_xenon_reloc_type_lookup
(bfd *, bfd_reloc_code_real_type);
#define COFF_DEFAULT_SECTION_ALIGNMENT_POWER (2)
/* The page size is a guess based on ELF. */
#define COFF_PAGE_SIZE 0x10000
/* For some reason when using i386 COFF the value stored in the .text
section for a reference to a common symbol is the value itself plus
any desired offset. Ian Taylor, Cygnus Support. */
/* If we are producing relocatable output, we need to do some
adjustments to the object file that are not done by the
bfd_perform_relocation function. This function is called by every
reloc type to make any required adjustments. */
static bfd_reloc_status_type
coff_xenon_reloc (bfd *abfd,
arelent *reloc_entry,
asymbol *symbol,
void * data,
asection *input_section,
bfd *output_bfd,
char **error_message ATTRIBUTE_UNUSED)
{
symvalue diff;
#ifndef COFF_WITH_PE
if (output_bfd == (bfd *) NULL)
return bfd_reloc_continue;
#endif
if (bfd_is_com_section (symbol->section))
{
#ifndef COFF_WITH_PE
/* We are relocating a common symbol. The current value in the
object file is ORIG + OFFSET, where ORIG is the value of the
common symbol as seen by the object file when it was compiled
(this may be zero if the symbol was undefined) and OFFSET is
the offset into the common symbol (normally zero, but may be
non-zero when referring to a field in a common structure).
ORIG is the negative of reloc_entry->addend, which is set by
the CALC_ADDEND macro below. We want to replace the value in
the object file with NEW + OFFSET, where NEW is the value of
the common symbol which we are going to put in the final
object file. NEW is symbol->value. */
diff = symbol->value + reloc_entry->addend;
#else
/* In PE mode, we do not offset the common symbol. */
diff = reloc_entry->addend;
#endif
}
else
{
/* For some reason bfd_perform_relocation always effectively
ignores the addend for a COFF target when producing
relocatable output. This seems to be always wrong for 386
COFF, so we handle the addend here instead. */
#ifdef COFF_WITH_PE
if (output_bfd == (bfd *) NULL)
{
reloc_howto_type *howto = reloc_entry->howto;
/* Although PC relative relocations are very similar between
PE and non-PE formats, but they are off by howto->size
bytes. For the external relocation, PE is very different
from others. See md_apply_fix3 () in gas/config/tc-i386.c.
When we link PE and non-PE object files together to
generate a non-PE executable, we have to compensate it
here. */
if (howto->pc_relative && howto->pcrel_offset)
diff = -bfd_get_reloc_size (howto);
else if (symbol->flags & BSF_WEAK)
diff = reloc_entry->addend - symbol->value;
else
diff = -reloc_entry->addend;
}
else
#endif
diff = reloc_entry->addend;
}
#ifdef COFF_WITH_PE
/* FIXME: How should this case be handled? */
if (reloc_entry->howto->type == R_IMAGEBASE
&& output_bfd != NULL
&& bfd_get_flavour(output_bfd) == bfd_target_coff_flavour)
diff -= pe_data (output_bfd)->pe_opthdr.ImageBase;
#endif
#define DOIT(x) \
x = ((x & ~howto->dst_mask) | (((x & howto->src_mask) + diff) & howto->dst_mask))
if (diff != 0)
{
reloc_howto_type *howto = reloc_entry->howto;
bfd_size_type octets = (reloc_entry->address
* OCTETS_PER_BYTE (abfd, input_section));
unsigned char *addr = (unsigned char *) data + octets;
if (!bfd_reloc_offset_in_range (howto, abfd, input_section, octets))
return bfd_reloc_outofrange;
switch (bfd_get_reloc_size (howto))
{
case 1:
{
char x = bfd_get_8 (abfd, addr);
DOIT (x);
bfd_put_8 (abfd, x, addr);
}
break;
case 2:
{
short x = bfd_get_16 (abfd, addr);
DOIT (x);
bfd_put_16 (abfd, (bfd_vma) x, addr);
}
break;
case 4:
{
long x = bfd_get_32 (abfd, addr);
DOIT (x);
bfd_put_32 (abfd, (bfd_vma) x, addr);
}
break;
default:
abort ();
}
}
/* Now let bfd_perform_relocation finish everything up. */
return bfd_reloc_continue;
}
#ifdef COFF_WITH_PE
/* Return TRUE if this relocation should appear in the output .reloc
section. */
static bool
in_reloc_p (bfd *abfd ATTRIBUTE_UNUSED, reloc_howto_type *howto)
{
return ! howto->pc_relative
&& howto->type != R_IMAGEBASE
&& howto->type != R_SECREL32
&& howto->type != R_SECTION;
}
#endif /* COFF_WITH_PE */
#ifndef PCRELOFFSET
#define PCRELOFFSET false
#endif
static reloc_howto_type howto_table[] =
{
EMPTY_HOWTO (0),
EMPTY_HOWTO (1),
EMPTY_HOWTO (2),
EMPTY_HOWTO (3),
EMPTY_HOWTO (4),
EMPTY_HOWTO (5),
HOWTO (R_DIR32, /* type */
0, /* rightshift */
4, /* size */
32, /* bitsize */
false, /* pc_relative */
0, /* bitpos */
complain_overflow_bitfield, /* complain_on_overflow */
coff_xenon_reloc, /* special_function */
"dir32", /* name */
true, /* partial_inplace */
0xffffffff, /* src_mask */
0xffffffff, /* dst_mask */
true), /* pcrel_offset */
/* PE IMAGE_REL_I386_DIR32NB relocation (7). */
HOWTO (R_IMAGEBASE, /* type */
0, /* rightshift */
4, /* size */
32, /* bitsize */
false, /* pc_relative */
0, /* bitpos */
complain_overflow_bitfield, /* complain_on_overflow */
coff_xenon_reloc, /* special_function */
"rva32", /* name */
true, /* partial_inplace */
0xffffffff, /* src_mask */
0xffffffff, /* dst_mask */
false), /* pcrel_offset */
EMPTY_HOWTO (010),
EMPTY_HOWTO (011),
#ifdef COFF_WITH_PE
/* 16-bit word section relocation (012). */
HOWTO (R_SECTION, /* type */
0, /* rightshift */
2, /* size */
16, /* bitsize */
false, /* pc_relative */
0, /* bitpos */
complain_overflow_bitfield, /* complain_on_overflow */
coff_xenon_reloc, /* special_function */
"secidx", /* name */
true, /* partial_inplace */
0xffffffff, /* src_mask */
0xffffffff, /* dst_mask */
true), /* pcrel_offset */
/* 32-bit longword section relative relocation (013). */
HOWTO (R_SECREL32, /* type */
0, /* rightshift */
4, /* size */
32, /* bitsize */
false, /* pc_relative */
0, /* bitpos */
complain_overflow_bitfield, /* complain_on_overflow */
coff_xenon_reloc, /* special_function */
"secrel32", /* name */
true, /* partial_inplace */
0xffffffff, /* src_mask */
0xffffffff, /* dst_mask */
true), /* pcrel_offset */
#else
EMPTY_HOWTO (012),
EMPTY_HOWTO (013),
#endif
EMPTY_HOWTO (014),
EMPTY_HOWTO (015),
EMPTY_HOWTO (016),
/* Byte relocation (017). */
HOWTO (R_RELBYTE, /* type */
0, /* rightshift */
1, /* size */
8, /* bitsize */
false, /* pc_relative */
0, /* bitpos */
complain_overflow_bitfield, /* complain_on_overflow */
coff_xenon_reloc, /* special_function */
"8", /* name */
true, /* partial_inplace */
0x000000ff, /* src_mask */
0x000000ff, /* dst_mask */
PCRELOFFSET), /* pcrel_offset */
/* 16-bit word relocation (020). */
HOWTO (R_RELWORD, /* type */
0, /* rightshift */
2, /* size */
16, /* bitsize */
false, /* pc_relative */
0, /* bitpos */
complain_overflow_bitfield, /* complain_on_overflow */
coff_xenon_reloc, /* special_function */
"16", /* name */
true, /* partial_inplace */
0x0000ffff, /* src_mask */
0x0000ffff, /* dst_mask */
PCRELOFFSET), /* pcrel_offset */
/* 32-bit longword relocation (021). */
HOWTO (R_RELLONG, /* type */
0, /* rightshift */
4, /* size */
32, /* bitsize */
false, /* pc_relative */
0, /* bitpos */
complain_overflow_bitfield, /* complain_on_overflow */
coff_xenon_reloc, /* special_function */
"32", /* name */
true, /* partial_inplace */
0xffffffff, /* src_mask */
0xffffffff, /* dst_mask */
PCRELOFFSET), /* pcrel_offset */
/* Byte PC relative relocation (022). */
HOWTO (R_PCRBYTE, /* type */
0, /* rightshift */
1, /* size */
8, /* bitsize */
true, /* pc_relative */
0, /* bitpos */
complain_overflow_signed, /* complain_on_overflow */
coff_xenon_reloc, /* special_function */
"DISP8", /* name */
true, /* partial_inplace */
0x000000ff, /* src_mask */
0x000000ff, /* dst_mask */
PCRELOFFSET), /* pcrel_offset */
/* 16-bit word PC relative relocation (023). */
HOWTO (R_PCRWORD, /* type */
0, /* rightshift */
2, /* size */
16, /* bitsize */
true, /* pc_relative */
0, /* bitpos */
complain_overflow_signed, /* complain_on_overflow */
coff_xenon_reloc, /* special_function */
"DISP16", /* name */
true, /* partial_inplace */
0x0000ffff, /* src_mask */
0x0000ffff, /* dst_mask */
PCRELOFFSET), /* pcrel_offset */
/* 32-bit longword PC relative relocation (024). */
HOWTO (R_PCRLONG, /* type */
0, /* rightshift */
4, /* size */
32, /* bitsize */
true, /* pc_relative */
0, /* bitpos */
complain_overflow_signed, /* complain_on_overflow */
coff_xenon_reloc, /* special_function */
"DISP32", /* name */
true, /* partial_inplace */
0xffffffff, /* src_mask */
0xffffffff, /* dst_mask */
PCRELOFFSET) /* pcrel_offset */
};
#define NUM_HOWTOS (sizeof (howto_table) / sizeof (howto_table[0]))
/* Turn a howto into a reloc nunmber */
#define SELECT_RELOC(x,howto) { x.r_type = howto->type; }
#define BADMAG(x) XENONBADMAG(x)
#define XENON 1 /* Customize coffcode.h */
#define RTYPE2HOWTO(cache_ptr, dst) \
((cache_ptr)->howto = \
((dst)->r_type < NUM_HOWTOS \
? howto_table + (dst)->r_type \
: NULL))
/* For 386 COFF a STYP_NOLOAD | STYP_BSS section is part of a shared
library. On some other COFF targets STYP_BSS is normally
STYP_NOLOAD. */
#define BSS_NOLOAD_IS_SHARED_LIBRARY
/* Compute the addend of a reloc. If the reloc is to a common symbol,
the object file contains the value of the common symbol. By the
time this is called, the linker may be using a different symbol
from a different object file with a different value. Therefore, we
hack wildly to locate the original symbol from this file so that we
can make the correct adjustment. This macro sets coffsym to the
symbol from the original file, and uses it to set the addend value
correctly. If this is not a common symbol, the usual addend
calculation is done, except that an additional tweak is needed for
PC relative relocs.
FIXME: This macro refers to symbols and asect; these are from the
calling function, not the macro arguments. */
#define CALC_ADDEND(abfd, ptr, reloc, cache_ptr) \
{ \
coff_symbol_type *coffsym = (coff_symbol_type *) NULL; \
if (ptr && bfd_asymbol_bfd (ptr) != abfd) \
coffsym = (obj_symbols (abfd) \
+ (cache_ptr->sym_ptr_ptr - symbols)); \
else if (ptr) \
coffsym = coff_symbol_from (ptr); \
if (coffsym != (coff_symbol_type *) NULL \
&& coffsym->native->u.syment.n_scnum == 0) \
cache_ptr->addend = - coffsym->native->u.syment.n_value; \
else if (ptr && bfd_asymbol_bfd (ptr) == abfd \
&& ptr->section != (asection *) NULL) \
cache_ptr->addend = - (ptr->section->vma \
+ COFF_PE_ADDEND_BIAS (ptr)); \
else \
cache_ptr->addend = 0; \
if (ptr && reloc.r_type < NUM_HOWTOS \
&& howto_table[reloc.r_type].pc_relative) \
cache_ptr->addend += asect->vma; \
}
/* We use the special COFF backend linker. For normal i386 COFF, we
can use the generic relocate_section routine. For PE, we need our
own routine. */
#ifndef COFF_WITH_PE
#define coff_relocate_section _bfd_coff_generic_relocate_section
#else /* COFF_WITH_PE */
/* The PE relocate section routine. We handle secidx relocations here,
as well as making sure that we don't do anything for a relocatable
link. */
static bool
coff_pe_xenon_relocate_section (bfd *output_bfd,
struct bfd_link_info *info,
bfd *input_bfd,
asection *input_section,
bfd_byte *contents,
struct internal_reloc *relocs,
struct internal_syment *syms,
asection **sections)
{
struct internal_reloc *rel;
struct internal_reloc *relend;
if (bfd_link_relocatable (info))
return true;
rel = relocs;
relend = rel + input_section->reloc_count;
for (; rel < relend; rel++)
{
long symndx;
struct coff_link_hash_entry *h;
asection *sec, *s;
uint16_t idx = 0, i = 1;
if (rel->r_type != R_SECTION)
continue;
/* Make sure that _bfd_coff_generic_relocate_section won't parse
this reloc after us. */
rel->r_type = 0;
symndx = rel->r_symndx;
if (symndx < 0
|| (unsigned long) symndx >= obj_raw_syment_count (input_bfd))
continue;
h = obj_coff_sym_hashes (input_bfd)[symndx];
if (h == NULL)
sec = sections[symndx];
else
{
if (h->root.type == bfd_link_hash_defined
|| h->root.type == bfd_link_hash_defweak)
{
/* Defined weak symbols are a GNU extension. */
sec = h->root.u.def.section;
}
else
{
sec = NULL;
}
}
if (!sec)
continue;
if (bfd_is_abs_section (sec))
continue;
if (discarded_section (sec))
continue;
s = output_bfd->sections;
while (s)
{
if (s == sec->output_section)
{
idx = i;
break;
}
i++;
s = s->next;
}
bfd_putl16 (idx, contents + rel->r_vaddr - input_section->vma);
}
return _bfd_coff_generic_relocate_section (output_bfd, info, input_bfd,
input_section, contents,
relocs, syms, sections);
}
#define coff_relocate_section coff_pe_xenon_relocate_section
#endif /* COFF_WITH_PE */
/* Convert an rtype to howto for the COFF backend linker. */
static reloc_howto_type *
coff_xenon_rtype_to_howto (bfd *abfd ATTRIBUTE_UNUSED,
asection *sec,
struct internal_reloc *rel,
struct coff_link_hash_entry *h,
struct internal_syment *sym,
bfd_vma *addendp)
{
reloc_howto_type *howto;
if (rel->r_type >= NUM_HOWTOS)
{
bfd_set_error (bfd_error_bad_value);
return NULL;
}
howto = howto_table + rel->r_type;
#ifdef COFF_WITH_PE
/* Cancel out code in _bfd_coff_generic_relocate_section. */
*addendp = 0;
#endif
if (howto->pc_relative)
*addendp += sec->vma;
if (sym != NULL && sym->n_scnum == 0 && sym->n_value != 0)
{
/* This is a common symbol. The section contents include the
size (sym->n_value) as an addend. The relocate_section
function will be adding in the final value of the symbol. We
need to subtract out the current size in order to get the
correct result. */
BFD_ASSERT (h != NULL);
#ifndef COFF_WITH_PE
/* I think we *do* want to bypass this. If we don't, I have
seen some data parameters get the wrong relocation address.
If I link two versions with and without this section bypassed
and then do a binary comparison, the addresses which are
different can be looked up in the map. The case in which
this section has been bypassed has addresses which correspond
to values I can find in the map. */
*addendp -= sym->n_value;
#endif
}
#ifndef COFF_WITH_PE
/* If the output symbol is common (in which case this must be a
relocatable link), we need to add in the final size of the
common symbol. */
if (h != NULL && h->root.type == bfd_link_hash_common)
*addendp += h->root.u.c.size;
#endif
#ifdef COFF_WITH_PE
if (howto->pc_relative)
{
*addendp -= 4;
/* If the symbol is defined, then the generic code is going to
add back the symbol value in order to cancel out an
adjustment it made to the addend. However, we set the addend
to 0 at the start of this function. We need to adjust here,
to avoid the adjustment the generic code will make. FIXME:
This is getting a bit hackish. */
if (sym != NULL && sym->n_scnum != 0)
*addendp -= sym->n_value;
}
if (rel->r_type == R_IMAGEBASE
&& (bfd_get_flavour(sec->output_section->owner)
== bfd_target_coff_flavour))
{
*addendp -= pe_data(sec->output_section->owner)->pe_opthdr.ImageBase;
}
/* PR 17099 - Absolute R_PCRLONG relocations do not need a symbol. */
if (rel->r_type == R_PCRLONG && sym == NULL)
*addendp -= rel->r_vaddr;
else
BFD_ASSERT (sym != NULL);
if (rel->r_type == R_SECREL32 && sym != NULL)
{
bfd_vma osect_vma;
if (h && (h->root.type == bfd_link_hash_defined
|| h->root.type == bfd_link_hash_defweak))
osect_vma = h->root.u.def.section->output_section->vma;
else
{
asection *s;
int i;
/* Sigh, the only way to get the section to offset against
is to find it the hard way. */
for (s = abfd->sections, i = 1; i < sym->n_scnum; i++)
s = s->next;
osect_vma = s->output_section->vma;
}
*addendp -= osect_vma;
}
#endif
return howto;
}
#define coff_bfd_reloc_type_lookup coff_xenon_reloc_type_lookup
#define coff_bfd_reloc_name_lookup coff_xenon_reloc_name_lookup
static reloc_howto_type *
coff_xenon_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED,
bfd_reloc_code_real_type code)
{
switch (code)
{
case BFD_RELOC_RVA:
return howto_table + R_IMAGEBASE;
case BFD_RELOC_32:
return howto_table + R_DIR32;
case BFD_RELOC_32_PCREL:
return howto_table + R_PCRLONG;
case BFD_RELOC_16:
return howto_table + R_RELWORD;
case BFD_RELOC_16_PCREL:
return howto_table + R_PCRWORD;
case BFD_RELOC_8:
return howto_table + R_RELBYTE;
case BFD_RELOC_8_PCREL:
return howto_table + R_PCRBYTE;
#ifdef COFF_WITH_PE
case BFD_RELOC_32_SECREL:
return howto_table + R_SECREL32;
case BFD_RELOC_16_SECIDX:
return howto_table + R_SECTION;
#endif
default:
BFD_FAIL ();
return 0;
}
}
static reloc_howto_type *
coff_xenon_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED,
const char *r_name)
{
unsigned int i;
for (i = 0; i < NUM_HOWTOS; i++)
if (howto_table[i].name != NULL
&& strcasecmp (howto_table[i].name, r_name) == 0)
return &howto_table[i];
return NULL;
}
#define coff_rtype_to_howto coff_xenon_rtype_to_howto
#ifdef TARGET_UNDERSCORE
/* If i386 gcc uses underscores for symbol names, then it does not use
a leading dot for local labels, so if TARGET_UNDERSCORE is defined
we treat all symbols starting with L as local. */
static bool
coff_xenon_is_local_label_name (bfd *abfd, const char *name)
{
if (name[0] == 'L')
return true;
return _bfd_coff_is_local_label_name (abfd, name);
}
#define coff_bfd_is_local_label_name coff_xenon_is_local_label_name
#endif /* TARGET_UNDERSCORE */
#include "coffcode.h"
const bfd_target
#ifdef TARGET_SYM
TARGET_SYM =
#else
xenon_coff_vec =
#endif
{
#ifdef TARGET_NAME
TARGET_NAME,
#else
"coff-xenon", /* name */
#endif
bfd_target_coff_flavour,
BFD_ENDIAN_LITTLE, /* data byte order is little */
BFD_ENDIAN_LITTLE, /* header byte order is little */
(HAS_RELOC | EXEC_P | /* object flags */
HAS_LINENO | HAS_DEBUG |
HAS_SYMS | HAS_LOCALS | WP_TEXT | D_PAGED | BFD_COMPRESS | BFD_DECOMPRESS ),
(SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC /* section flags */
#ifdef COFF_WITH_PE
| SEC_LINK_ONCE | SEC_LINK_DUPLICATES | SEC_READONLY | SEC_DEBUGGING
#endif
| SEC_CODE | SEC_DATA | SEC_EXCLUDE ),
#ifdef TARGET_UNDERSCORE
TARGET_UNDERSCORE, /* leading underscore */
#else
0, /* leading underscore */
#endif
'/', /* ar_pad_char */
15, /* ar_max_namelen */
0, /* match priority. */
TARGET_KEEP_UNUSED_SECTION_SYMBOLS, /* keep unused section symbols. */
bfd_getl64, bfd_getl_signed_64, bfd_putl64,
bfd_getl32, bfd_getl_signed_32, bfd_putl32,
bfd_getl16, bfd_getl_signed_16, bfd_putl16, /* data */
bfd_getl64, bfd_getl_signed_64, bfd_putl64,
bfd_getl32, bfd_getl_signed_32, bfd_putl32,
bfd_getl16, bfd_getl_signed_16, bfd_putl16, /* hdrs */
#ifndef COFF_CHECK_FORMAT
#define COFF_CHECK_FORMAT coff_object_p
#endif
#ifndef COFF_WRITE_CONTENTS
#define COFF_WRITE_CONTENTS coff_write_object_contents
#endif
/* Note that we allow an object file to be treated as a core file as well. */
{ /* bfd_check_format */
_bfd_dummy_target,
COFF_CHECK_FORMAT,
bfd_generic_archive_p,
COFF_CHECK_FORMAT
},
{ /* bfd_set_format */
_bfd_bool_bfd_false_error,
coff_mkobject,
_bfd_generic_mkarchive,
_bfd_bool_bfd_false_error
},
{ /* bfd_write_contents */
_bfd_bool_bfd_false_error,
COFF_WRITE_CONTENTS,
_bfd_write_archive_contents,
_bfd_bool_bfd_false_error
},
BFD_JUMP_TABLE_GENERIC (coff),
BFD_JUMP_TABLE_COPY (coff),
BFD_JUMP_TABLE_CORE (_bfd_nocore),
BFD_JUMP_TABLE_ARCHIVE (_bfd_archive_coff),
BFD_JUMP_TABLE_SYMBOLS (coff),
BFD_JUMP_TABLE_RELOCS (coff),
BFD_JUMP_TABLE_WRITE (coff),
BFD_JUMP_TABLE_LINK (coff),
BFD_JUMP_TABLE_DYNAMIC (_bfd_nodynamic),
NULL,
COFF_SWAP_TABLE
};
#ifdef COFF_WITH_PE_BIGOBJ
const bfd_target
TARGET_SYM_BIG =
{
TARGET_NAME_BIG,
bfd_target_coff_flavour,
BFD_ENDIAN_LITTLE, /* data byte order is little */
BFD_ENDIAN_LITTLE, /* header byte order is little */
(HAS_RELOC | EXEC_P | /* object flags */
HAS_LINENO | HAS_DEBUG |
HAS_SYMS | HAS_LOCALS | WP_TEXT | D_PAGED | BFD_COMPRESS | BFD_DECOMPRESS ),
(SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC /* section flags */
#ifdef COFF_WITH_PE
| SEC_LINK_ONCE | SEC_LINK_DUPLICATES | SEC_READONLY | SEC_DEBUGGING
#endif
| SEC_CODE | SEC_DATA | SEC_EXCLUDE ),
#ifdef TARGET_UNDERSCORE
TARGET_UNDERSCORE, /* leading underscore */
#else
0, /* leading underscore */
#endif
'/', /* ar_pad_char */
15, /* ar_max_namelen */
0, /* match priority. */
TARGET_KEEP_UNUSED_SECTION_SYMBOLS, /* keep unused section symbols. */
bfd_getl64, bfd_getl_signed_64, bfd_putl64,
bfd_getl32, bfd_getl_signed_32, bfd_putl32,
bfd_getl16, bfd_getl_signed_16, bfd_putl16, /* data */
bfd_getl64, bfd_getl_signed_64, bfd_putl64,
bfd_getl32, bfd_getl_signed_32, bfd_putl32,
bfd_getl16, bfd_getl_signed_16, bfd_putl16, /* hdrs */
/* Note that we allow an object file to be treated as a core file as well. */
{ /* bfd_check_format */
_bfd_dummy_target,
COFF_CHECK_FORMAT,
bfd_generic_archive_p,
COFF_CHECK_FORMAT
},
{ /* bfd_set_format */
_bfd_bool_bfd_false_error,
coff_mkobject,
_bfd_generic_mkarchive,
_bfd_bool_bfd_false_error
},
{ /* bfd_write_contents */
_bfd_bool_bfd_false_error,
COFF_WRITE_CONTENTS,
_bfd_write_archive_contents,
_bfd_bool_bfd_false_error
},
BFD_JUMP_TABLE_GENERIC (coff),
BFD_JUMP_TABLE_COPY (coff),
BFD_JUMP_TABLE_CORE (_bfd_nocore),
BFD_JUMP_TABLE_ARCHIVE (_bfd_archive_coff),
BFD_JUMP_TABLE_SYMBOLS (coff),
BFD_JUMP_TABLE_RELOCS (coff),
BFD_JUMP_TABLE_WRITE (coff),
BFD_JUMP_TABLE_LINK (coff),
BFD_JUMP_TABLE_DYNAMIC (_bfd_nodynamic),
NULL,
&bigobj_swap_table
};
#endif

5
bfd/coffcode.h
View file

@ -4123,6 +4123,11 @@ coff_write_object_contents (bfd * abfd)
internal_a.magic = MIPS_PE_MAGIC;
#endif
#if defined(XENON) && defined(COFF_WITH_PE)
#define __A_MAGIC_SET__
internal_a.magic = XENONMAGIC;
#endif
#ifndef __A_MAGIC_SET__
#include "Your aouthdr magic number is not being set!"
#else

5
bfd/config.bfd
View file

@ -512,6 +512,11 @@ case "${targ}" in
targ_underscore=yes
;;
*-fcx-*)
targ_defvec=xenon_pe_vec
targ_selvecs="xenon_pe_vec xenon_pei_vec"
;;
fido-*-elf* )
targ_defvec=m68k_elf32_vec
;;

2
bfd/configure vendored
View file

@ -16083,6 +16083,8 @@ do
x86_64_pe_vec) tb="$tb pe-x86_64.lo pex64igen.lo $coff"; target_size=64 ;;
x86_64_pe_big_vec) tb="$tb pe-x86_64.lo pex64igen.lo $coff"; target_size=64 ;;
x86_64_pei_vec) tb="$tb pei-x86_64.lo pex64igen.lo $coff"; target_size=64 ;;
xenon_pe_vec) tb="$tb pe-xenon.lo peigen.lo $coff" ;;
xenon_pei_vec) tb="$tb pei-xenon.lo peigen.lo $coff" ;;
xgate_elf32_vec) tb="$tb elf32-xgate.lo elf32.lo $elf" ;;
xstormy16_elf32_vec) tb="$tb elf32-xstormy16.lo elf32.lo $elf" ;;
xtensa_elf32_be_vec) tb="$tb xtensa-dynconfig.lo xtensa-isa.lo xtensa-modules.lo elf32-xtensa.lo elf32.lo $elf" ;;

2
bfd/configure.ac
View file

@ -669,6 +669,8 @@ do
x86_64_pe_vec) tb="$tb pe-x86_64.lo pex64igen.lo $coff"; target_size=64 ;;
x86_64_pe_big_vec) tb="$tb pe-x86_64.lo pex64igen.lo $coff"; target_size=64 ;;
x86_64_pei_vec) tb="$tb pei-x86_64.lo pex64igen.lo $coff"; target_size=64 ;;
xenon_pe_vec) tb="$tb pe-xenon.lo peigen.lo $coff" ;;
xenon_pei_vec) tb="$tb pei-xenon.lo peigen.lo $coff" ;;
xgate_elf32_vec) tb="$tb elf32-xgate.lo elf32.lo $elf" ;;
xstormy16_elf32_vec) tb="$tb elf32-xstormy16.lo elf32.lo $elf" ;;
xtensa_elf32_be_vec) tb="$tb xtensa-dynconfig.lo xtensa-isa.lo xtensa-modules.lo elf32-xtensa.lo elf32.lo $elf" ;;

47
bfd/pe-xenon.c Normal file
View file

@ -0,0 +1,47 @@
/* Modified for Xbox 360 / FreeChainXenon by Aiden Isik, 2025 */
/* BFD back-end for Intel 386 PECOFF files.
Copyright (C) 1995-2024 Free Software Foundation, Inc.
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. */
#include "sysdep.h"
#include "bfd.h"
#define TARGET_SYM xenon_pe_vec
#define TARGET_NAME "pe-xenon"
#define COFF_WITH_PE
#define PCRELOFFSET true
#define TARGET_UNDERSCORE '_'
#define COFF_LONG_SECTION_NAMES
#define COFF_SUPPORT_GNU_LINKONCE
#define COFF_LONG_FILENAMES
#define COFF_SECTION_ALIGNMENT_ENTRIES \
{ COFF_SECTION_NAME_PARTIAL_MATCH (".idata"), \
COFF_ALIGNMENT_FIELD_EMPTY, COFF_ALIGNMENT_FIELD_EMPTY, 2 }, \
{ COFF_SECTION_NAME_EXACT_MATCH (".pdata"), \
COFF_ALIGNMENT_FIELD_EMPTY, COFF_ALIGNMENT_FIELD_EMPTY, 2 }, \
{ COFF_SECTION_NAME_PARTIAL_MATCH (".debug"), \
COFF_ALIGNMENT_FIELD_EMPTY, COFF_ALIGNMENT_FIELD_EMPTY, 0 }, \
{ COFF_SECTION_NAME_PARTIAL_MATCH (".zdebug"), \
COFF_ALIGNMENT_FIELD_EMPTY, COFF_ALIGNMENT_FIELD_EMPTY, 0 }, \
{ COFF_SECTION_NAME_PARTIAL_MATCH (".gnu.linkonce.wi."), \
COFF_ALIGNMENT_FIELD_EMPTY, COFF_ALIGNMENT_FIELD_EMPTY, 0 }
#include "coff-xenon.c"

47
bfd/pei-xenon.c Normal file
View file

@ -0,0 +1,47 @@
/* Modified for Xbox 360 / FreeChainXenon by Aiden Isik, 2025 */
/* BFD back-end for Intel 386 PE IMAGE COFF files.
Copyright (C) 1995-2024 Free Software Foundation, Inc.
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. */
#include "sysdep.h"
#include "bfd.h"
#define TARGET_SYM xenon_pei_vec
#define TARGET_NAME "pei-xenon"
#define COFF_IMAGE_WITH_PE
#define COFF_WITH_PE
#define PCRELOFFSET true
#define TARGET_UNDERSCORE '_'
/* Long section names not allowed in executable images, only object files. */
#define COFF_LONG_SECTION_NAMES 0
#define COFF_SUPPORT_GNU_LINKONCE
#define COFF_LONG_FILENAMES
#define COFF_SECTION_ALIGNMENT_ENTRIES \
{ COFF_SECTION_NAME_PARTIAL_MATCH (".idata"), \
COFF_ALIGNMENT_FIELD_EMPTY, COFF_ALIGNMENT_FIELD_EMPTY, 2 }, \
{ COFF_SECTION_NAME_EXACT_MATCH (".pdata"), \
COFF_ALIGNMENT_FIELD_EMPTY, COFF_ALIGNMENT_FIELD_EMPTY, 2 }, \
{ COFF_SECTION_NAME_PARTIAL_MATCH (".debug"), \
COFF_ALIGNMENT_FIELD_EMPTY, COFF_ALIGNMENT_FIELD_EMPTY, 0 }, \
{ COFF_SECTION_NAME_PARTIAL_MATCH (".gnu.linkonce.wi."), \
COFF_ALIGNMENT_FIELD_EMPTY, COFF_ALIGNMENT_FIELD_EMPTY, 0 }
#include "coff-xenon.c"

5
bfd/targets.c
View file

@ -940,6 +940,8 @@ extern const bfd_target x86_64_mach_o_vec;
extern const bfd_target x86_64_pe_vec;
extern const bfd_target x86_64_pe_big_vec;
extern const bfd_target x86_64_pei_vec;
extern const bfd_target xenon_pe_vec;
extern const bfd_target xenon_pei_vec;
extern const bfd_target xgate_elf32_vec;
extern const bfd_target xstormy16_elf32_vec;
extern const bfd_target xtensa_elf32_be_vec;
@ -1357,6 +1359,9 @@ static const bfd_target * const _bfd_target_vector[] =
&x86_64_pei_vec,
#endif
&xenon_pe_vec,
&xenon_pei_vec,
&xgate_elf32_vec,
&xstormy16_elf32_vec,

2
config.sub vendored
View file

@ -1768,7 +1768,7 @@ case $os in
| onefs* | tirtos* | phoenix* | fuchsia* | redox* | bme* \
| midnightbsd* | amdhsa* | unleashed* | emscripten* | wasi* \
| nsk* | powerunix* | genode* | zvmoe* | qnx* | emx* | zephyr* \
| fiwix* | mlibc* | cos* | mbr* | ironclad* )
| fiwix* | mlibc* | cos* | mbr* | ironclad* | xenon* )
;;
# This one is extra strict with allowed versions
sco3.2v2 | sco3.2v[4-9]* | sco5v6*)

2
gas/config/tc-ppc.h
View file

@ -31,9 +31,11 @@ struct fix;
#endif
/* If OBJ_COFF is defined we are assembling XCOFF for AIX or PowerMac. */
/*
#ifdef OBJ_COFF
#define OBJ_XCOFF
#endif
*/
/* The target BFD architecture. */
#define TARGET_ARCH (ppc_arch ())

2
gas/configure.tgt
View file

@ -196,6 +196,8 @@ case ${generic_target} in
bpf-*-*) fmt=elf ;;
epiphany-*-*) fmt=elf ;;
*-fcx-*) fmt=coff em=pe ;;
fr30-*-*) fmt=elf ;;
frv-*-*linux*) fmt=elf em=linux;;
frv-*-*) fmt=elf ;;

79
include/coff/xenon.h Normal file
View file

@ -0,0 +1,79 @@
/* Modified for Xbox 360 / FreeChainXenon by Aiden Isik, 2025 */
/* coff information for Intel 386/486.
Copyright (C) 2001-2024 Free Software Foundation, Inc.
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. */
#define L_LNNO_SIZE 2
#define INCLUDE_COMDAT_FIELDS_IN_AUXENT
#include "coff/external.h"
#define COFF_PAGE_SIZE 0x10000
/* Bits for f_flags:
F_RELFLG Relocation info stripped from file
F_EXEC File is executable (no unresolved external references)
F_LNNO Line numbers stripped from file
F_LSYMS Local symbols stripped from file
F_AR32WR File has byte ordering of an AR32WR machine (e.g. vax). */
#define F_RELFLG (0x0001)
#define F_EXEC (0x0002)
#define F_LNNO (0x0004)
#define F_LSYMS (0x0008)
#define XENONMAGIC 0x1f2
#define XENONBADMAG(x) ( ((x).f_magic != XENONMAGIC) )
#define OMAGIC 0404 /* Object files, eg as output. */
#define ZMAGIC 0413 /* Demand load format, eg normal ld output. */
#define STMAGIC 0401 /* Target shlib. */
#define SHMAGIC 0443 /* Host shlib. */
/* Define some NT default values. */
/* #define NT_IMAGE_BASE 0x400000 moved to internal.h */
#define NT_SECTION_ALIGNMENT 0x10000
#define NT_FILE_ALIGNMENT 0x200
#define NT_DEF_RESERVE 0x100000
#define NT_DEF_COMMIT 0x1000
/* Relocation directives. */
struct external_reloc
{
char r_vaddr[4];
char r_symndx[4];
char r_type[2];
};
#define RELOC struct external_reloc
#define RELSZ 10
/* i386 Relocations. */
#define R_DIR32 6
#define R_IMAGEBASE 7
#define R_SECTION 10
#define R_SECREL32 11
#define R_RELBYTE 15
#define R_RELWORD 16
#define R_RELLONG 17
#define R_PCRBYTE 18
#define R_PCRWORD 19
#define R_PCRLONG 20

1
ld/Makefile.am
View file

@ -369,6 +369,7 @@ ALL_EMULATION_SOURCES = \
ev850_rh850.c \
evanilla.c \
evaxnbsd.c \
exenonpe.c \
exgateelf.c \
ez80.c \
ez8001.c \

2
ld/Makefile.in
View file

@ -880,6 +880,7 @@ ALL_EMULATION_SOURCES = \
ev850_rh850.c \
evanilla.c \
evaxnbsd.c \
exenonpe.c \
exgateelf.c \
ez80.c \
ez8001.c \
@ -1579,6 +1580,7 @@ distclean-compile:
@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/ev850_rh850.Po@am__quote@
@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/evanilla.Po@am__quote@
@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/evaxnbsd.Po@am__quote@
@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/exenonpe.Po@am__quote@
@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/exgateelf.Po@am__quote@
@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/ez80.Po@am__quote@
@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/ez8001.Po@am__quote@

3
ld/configure.tgt
View file

@ -316,6 +316,9 @@ dlx-*-elf*) targ_emul=elf32_dlx
epiphany-*-*) targ_emul=elf32epiphany
targ_extra_emuls="elf32epiphany_4x4"
;;
*-fcx-*) targ_emul=xenonpe
targ_extra_ofiles="deffilep.o pdb.o pe-dll.o"
;;
fido*-*-elf*) targ_emul=m68kelf
;;
fr30-*-*) targ_emul=elf32fr30

10
ld/emulparams/xenonpe.sh Normal file
View file

@ -0,0 +1,10 @@
ARCH=powerpc64
SCRIPT_NAME=pe
OUTPUT_FORMAT="pei-xenon"
RELOCATEABLE_OUTPUT_FORMAT="pe-xenon"
TEMPLATE_NAME=pe
SUBSYSTEM=PE_DEF_SUBSYSTEM
INITIAL_SYMBOL_CHAR=\"_\"
TARGET_PAGE_SIZE=0x10000
GENERATE_AUTO_IMPORT_SCRIPT=1
TEXT_START_ADDR=0x82000000