0,0 → 1,5846 |
/* Support for the generic parts of most COFF variants, for BFD. |
Copyright 1990-2013 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. */ |
|
/* Most of this hacked by Steve Chamberlain, |
sac@cygnus.com. */ |
/* |
SECTION |
coff backends |
|
BFD supports a number of different flavours of coff format. |
The major differences between formats are the sizes and |
alignments of fields in structures on disk, and the occasional |
extra field. |
|
Coff in all its varieties is implemented with a few common |
files and a number of implementation specific files. For |
example, The 88k bcs coff format is implemented in the file |
@file{coff-m88k.c}. This file @code{#include}s |
@file{coff/m88k.h} which defines the external structure of the |
coff format for the 88k, and @file{coff/internal.h} which |
defines the internal structure. @file{coff-m88k.c} also |
defines the relocations used by the 88k format |
@xref{Relocations}. |
|
The Intel i960 processor version of coff is implemented in |
@file{coff-i960.c}. This file has the same structure as |
@file{coff-m88k.c}, except that it includes @file{coff/i960.h} |
rather than @file{coff-m88k.h}. |
|
SUBSECTION |
Porting to a new version of coff |
|
The recommended method is to select from the existing |
implementations the version of coff which is most like the one |
you want to use. For example, we'll say that i386 coff is |
the one you select, and that your coff flavour is called foo. |
Copy @file{i386coff.c} to @file{foocoff.c}, copy |
@file{../include/coff/i386.h} to @file{../include/coff/foo.h}, |
and add the lines to @file{targets.c} and @file{Makefile.in} |
so that your new back end is used. Alter the shapes of the |
structures in @file{../include/coff/foo.h} so that they match |
what you need. You will probably also have to add |
@code{#ifdef}s to the code in @file{coff/internal.h} and |
@file{coffcode.h} if your version of coff is too wild. |
|
You can verify that your new BFD backend works quite simply by |
building @file{objdump} from the @file{binutils} directory, |
and making sure that its version of what's going on and your |
host system's idea (assuming it has the pretty standard coff |
dump utility, usually called @code{att-dump} or just |
@code{dump}) are the same. Then clean up your code, and send |
what you've done to Cygnus. Then your stuff will be in the |
next release, and you won't have to keep integrating it. |
|
SUBSECTION |
How the coff backend works |
|
SUBSUBSECTION |
File layout |
|
The Coff backend is split into generic routines that are |
applicable to any Coff target and routines that are specific |
to a particular target. The target-specific routines are |
further split into ones which are basically the same for all |
Coff targets except that they use the external symbol format |
or use different values for certain constants. |
|
The generic routines are in @file{coffgen.c}. These routines |
work for any Coff target. They use some hooks into the target |
specific code; the hooks are in a @code{bfd_coff_backend_data} |
structure, one of which exists for each target. |
|
The essentially similar target-specific routines are in |
@file{coffcode.h}. This header file includes executable C code. |
The various Coff targets first include the appropriate Coff |
header file, make any special defines that are needed, and |
then include @file{coffcode.h}. |
|
Some of the Coff targets then also have additional routines in |
the target source file itself. |
|
For example, @file{coff-i960.c} includes |
@file{coff/internal.h} and @file{coff/i960.h}. It then |
defines a few constants, such as @code{I960}, and includes |
@file{coffcode.h}. Since the i960 has complex relocation |
types, @file{coff-i960.c} also includes some code to |
manipulate the i960 relocs. This code is not in |
@file{coffcode.h} because it would not be used by any other |
target. |
|
SUBSUBSECTION |
Coff long section names |
|
In the standard Coff object format, section names are limited to |
the eight bytes available in the @code{s_name} field of the |
@code{SCNHDR} section header structure. The format requires the |
field to be NUL-padded, but not necessarily NUL-terminated, so |
the longest section names permitted are a full eight characters. |
|
The Microsoft PE variants of the Coff object file format add |
an extension to support the use of long section names. This |
extension is defined in section 4 of the Microsoft PE/COFF |
specification (rev 8.1). If a section name is too long to fit |
into the section header's @code{s_name} field, it is instead |
placed into the string table, and the @code{s_name} field is |
filled with a slash ("/") followed by the ASCII decimal |
representation of the offset of the full name relative to the |
string table base. |
|
Note that this implies that the extension can only be used in object |
files, as executables do not contain a string table. The standard |
specifies that long section names from objects emitted into executable |
images are to be truncated. |
|
However, as a GNU extension, BFD can generate executable images |
that contain a string table and long section names. This |
would appear to be technically valid, as the standard only says |
that Coff debugging information is deprecated, not forbidden, |
and in practice it works, although some tools that parse PE files |
expecting the MS standard format may become confused; @file{PEview} is |
one known example. |
|
The functionality is supported in BFD by code implemented under |
the control of the macro @code{COFF_LONG_SECTION_NAMES}. If not |
defined, the format does not support long section names in any way. |
If defined, it is used to initialise a flag, |
@code{_bfd_coff_long_section_names}, and a hook function pointer, |
@code{_bfd_coff_set_long_section_names}, in the Coff backend data |
structure. The flag controls the generation of long section names |
in output BFDs at runtime; if it is false, as it will be by default |
when generating an executable image, long section names are truncated; |
if true, the long section names extension is employed. The hook |
points to a function that allows the value of the flag to be altered |
at runtime, on formats that support long section names at all; on |
other formats it points to a stub that returns an error indication. |
|
With input BFDs, the flag is set according to whether any long section |
names are detected while reading the section headers. For a completely |
new BFD, the flag is set to the default for the target format. This |
information can be used by a client of the BFD library when deciding |
what output format to generate, and means that a BFD that is opened |
for read and subsequently converted to a writeable BFD and modified |
in-place will retain whatever format it had on input. |
|
If @code{COFF_LONG_SECTION_NAMES} is simply defined (blank), or is |
defined to the value "1", then long section names are enabled by |
default; if it is defined to the value zero, they are disabled by |
default (but still accepted in input BFDs). The header @file{coffcode.h} |
defines a macro, @code{COFF_DEFAULT_LONG_SECTION_NAMES}, which is |
used in the backends to initialise the backend data structure fields |
appropriately; see the comments for further detail. |
|
SUBSUBSECTION |
Bit twiddling |
|
Each flavour of coff supported in BFD has its own header file |
describing the external layout of the structures. There is also |
an internal description of the coff layout, in |
@file{coff/internal.h}. A major function of the |
coff backend is swapping the bytes and twiddling the bits to |
translate the external form of the structures into the normal |
internal form. This is all performed in the |
@code{bfd_swap}_@i{thing}_@i{direction} routines. Some |
elements are different sizes between different versions of |
coff; it is the duty of the coff version specific include file |
to override the definitions of various packing routines in |
@file{coffcode.h}. E.g., the size of line number entry in coff is |
sometimes 16 bits, and sometimes 32 bits. @code{#define}ing |
@code{PUT_LNSZ_LNNO} and @code{GET_LNSZ_LNNO} will select the |
correct one. No doubt, some day someone will find a version of |
coff which has a varying field size not catered to at the |
moment. To port BFD, that person will have to add more @code{#defines}. |
Three of the bit twiddling routines are exported to |
@code{gdb}; @code{coff_swap_aux_in}, @code{coff_swap_sym_in} |
and @code{coff_swap_lineno_in}. @code{GDB} reads the symbol |
table on its own, but uses BFD to fix things up. More of the |
bit twiddlers are exported for @code{gas}; |
@code{coff_swap_aux_out}, @code{coff_swap_sym_out}, |
@code{coff_swap_lineno_out}, @code{coff_swap_reloc_out}, |
@code{coff_swap_filehdr_out}, @code{coff_swap_aouthdr_out}, |
@code{coff_swap_scnhdr_out}. @code{Gas} currently keeps track |
of all the symbol table and reloc drudgery itself, thereby |
saving the internal BFD overhead, but uses BFD to swap things |
on the way out, making cross ports much safer. Doing so also |
allows BFD (and thus the linker) to use the same header files |
as @code{gas}, which makes one avenue to disaster disappear. |
|
SUBSUBSECTION |
Symbol reading |
|
The simple canonical form for symbols used by BFD is not rich |
enough to keep all the information available in a coff symbol |
table. The back end gets around this problem by keeping the original |
symbol table around, "behind the scenes". |
|
When a symbol table is requested (through a call to |
@code{bfd_canonicalize_symtab}), a request gets through to |
@code{coff_get_normalized_symtab}. This reads the symbol table from |
the coff file and swaps all the structures inside into the |
internal form. It also fixes up all the pointers in the table |
(represented in the file by offsets from the first symbol in |
the table) into physical pointers to elements in the new |
internal table. This involves some work since the meanings of |
fields change depending upon context: a field that is a |
pointer to another structure in the symbol table at one moment |
may be the size in bytes of a structure at the next. Another |
pass is made over the table. All symbols which mark file names |
(<<C_FILE>> symbols) are modified so that the internal |
string points to the value in the auxent (the real filename) |
rather than the normal text associated with the symbol |
(@code{".file"}). |
|
At this time the symbol names are moved around. Coff stores |
all symbols less than nine characters long physically |
within the symbol table; longer strings are kept at the end of |
the file in the string table. This pass moves all strings |
into memory and replaces them with pointers to the strings. |
|
The symbol table is massaged once again, this time to create |
the canonical table used by the BFD application. Each symbol |
is inspected in turn, and a decision made (using the |
@code{sclass} field) about the various flags to set in the |
@code{asymbol}. @xref{Symbols}. The generated canonical table |
shares strings with the hidden internal symbol table. |
|
Any linenumbers are read from the coff file too, and attached |
to the symbols which own the functions the linenumbers belong to. |
|
SUBSUBSECTION |
Symbol writing |
|
Writing a symbol to a coff file which didn't come from a coff |
file will lose any debugging information. The @code{asymbol} |
structure remembers the BFD from which the symbol was taken, and on |
output the back end makes sure that the same destination target as |
source target is present. |
|
When the symbols have come from a coff file then all the |
debugging information is preserved. |
|
Symbol tables are provided for writing to the back end in a |
vector of pointers to pointers. This allows applications like |
the linker to accumulate and output large symbol tables |
without having to do too much byte copying. |
|
This function runs through the provided symbol table and |
patches each symbol marked as a file place holder |
(@code{C_FILE}) to point to the next file place holder in the |
list. It also marks each @code{offset} field in the list with |
the offset from the first symbol of the current symbol. |
|
Another function of this procedure is to turn the canonical |
value form of BFD into the form used by coff. Internally, BFD |
expects symbol values to be offsets from a section base; so a |
symbol physically at 0x120, but in a section starting at |
0x100, would have the value 0x20. Coff expects symbols to |
contain their final value, so symbols have their values |
changed at this point to reflect their sum with their owning |
section. This transformation uses the |
<<output_section>> field of the @code{asymbol}'s |
@code{asection} @xref{Sections}. |
|
o <<coff_mangle_symbols>> |
|
This routine runs though the provided symbol table and uses |
the offsets generated by the previous pass and the pointers |
generated when the symbol table was read in to create the |
structured hierarchy required by coff. It changes each pointer |
to a symbol into the index into the symbol table of the asymbol. |
|
o <<coff_write_symbols>> |
|
This routine runs through the symbol table and patches up the |
symbols from their internal form into the coff way, calls the |
bit twiddlers, and writes out the table to the file. |
|
*/ |
|
/* |
INTERNAL_DEFINITION |
coff_symbol_type |
|
DESCRIPTION |
The hidden information for an <<asymbol>> is described in a |
<<combined_entry_type>>: |
|
CODE_FRAGMENT |
. |
.typedef struct coff_ptr_struct |
.{ |
. {* Remembers the offset from the first symbol in the file for |
. this symbol. Generated by coff_renumber_symbols. *} |
. unsigned int offset; |
. |
. {* Should the value of this symbol be renumbered. Used for |
. XCOFF C_BSTAT symbols. Set by coff_slurp_symbol_table. *} |
. unsigned int fix_value : 1; |
. |
. {* Should the tag field of this symbol be renumbered. |
. Created by coff_pointerize_aux. *} |
. unsigned int fix_tag : 1; |
. |
. {* Should the endidx field of this symbol be renumbered. |
. Created by coff_pointerize_aux. *} |
. unsigned int fix_end : 1; |
. |
. {* Should the x_csect.x_scnlen field be renumbered. |
. Created by coff_pointerize_aux. *} |
. unsigned int fix_scnlen : 1; |
. |
. {* Fix up an XCOFF C_BINCL/C_EINCL symbol. The value is the |
. index into the line number entries. Set by coff_slurp_symbol_table. *} |
. unsigned int fix_line : 1; |
. |
. {* The container for the symbol structure as read and translated |
. from the file. *} |
. union |
. { |
. union internal_auxent auxent; |
. struct internal_syment syment; |
. } u; |
.} combined_entry_type; |
. |
. |
.{* Each canonical asymbol really looks like this: *} |
. |
.typedef struct coff_symbol_struct |
.{ |
. {* The actual symbol which the rest of BFD works with *} |
. asymbol symbol; |
. |
. {* A pointer to the hidden information for this symbol *} |
. combined_entry_type *native; |
. |
. {* A pointer to the linenumber information for this symbol *} |
. struct lineno_cache_entry *lineno; |
. |
. {* Have the line numbers been relocated yet ? *} |
. bfd_boolean done_lineno; |
.} coff_symbol_type; |
|
*/ |
|
#include "libiberty.h" |
|
#ifdef COFF_WITH_PE |
#include "peicode.h" |
#else |
#include "coffswap.h" |
#endif |
|
#define STRING_SIZE_SIZE 4 |
|
#define DOT_DEBUG ".debug" |
#define DOT_ZDEBUG ".zdebug" |
#define GNU_LINKONCE_WI ".gnu.linkonce.wi." |
#define GNU_LINKONCE_WT ".gnu.linkonce.wt." |
#define DOT_RELOC ".reloc" |
|
#if defined (COFF_LONG_SECTION_NAMES) |
/* Needed to expand the inputs to BLANKOR1TOODD. */ |
#define COFFLONGSECTIONCATHELPER(x,y) x ## y |
/* If the input macro Y is blank or '1', return an odd number; if it is |
'0', return an even number. Result undefined in all other cases. */ |
#define BLANKOR1TOODD(y) COFFLONGSECTIONCATHELPER(1,y) |
/* Defined to numerical 0 or 1 according to whether generation of long |
section names is disabled or enabled by default. */ |
#define COFF_ENABLE_LONG_SECTION_NAMES (BLANKOR1TOODD(COFF_LONG_SECTION_NAMES) & 1) |
/* Where long section names are supported, we allow them to be enabled |
and disabled at runtime, so select an appropriate hook function for |
_bfd_coff_set_long_section_names. */ |
#define COFF_LONG_SECTION_NAMES_SETTER bfd_coff_set_long_section_names_allowed |
#else /* !defined (COFF_LONG_SECTION_NAMES) */ |
/* If long section names are not supported, this stub disallows any |
attempt to enable them at run-time. */ |
#define COFF_LONG_SECTION_NAMES_SETTER bfd_coff_set_long_section_names_disallowed |
#endif /* defined (COFF_LONG_SECTION_NAMES) */ |
|
/* Define a macro that can be used to initialise both the fields relating |
to long section names in the backend data struct simultaneously. */ |
#if COFF_ENABLE_LONG_SECTION_NAMES |
#define COFF_DEFAULT_LONG_SECTION_NAMES (TRUE), COFF_LONG_SECTION_NAMES_SETTER |
#else /* !COFF_ENABLE_LONG_SECTION_NAMES */ |
#define COFF_DEFAULT_LONG_SECTION_NAMES (FALSE), COFF_LONG_SECTION_NAMES_SETTER |
#endif /* COFF_ENABLE_LONG_SECTION_NAMES */ |
|
#if defined (COFF_LONG_SECTION_NAMES) |
static bfd_boolean bfd_coff_set_long_section_names_allowed |
(bfd *, int); |
#else /* !defined (COFF_LONG_SECTION_NAMES) */ |
static bfd_boolean bfd_coff_set_long_section_names_disallowed |
(bfd *, int); |
#endif /* defined (COFF_LONG_SECTION_NAMES) */ |
static long sec_to_styp_flags |
(const char *, flagword); |
static bfd_boolean styp_to_sec_flags |
(bfd *, void *, const char *, asection *, flagword *); |
static bfd_boolean coff_bad_format_hook |
(bfd *, void *); |
static void coff_set_custom_section_alignment |
(bfd *, asection *, const struct coff_section_alignment_entry *, |
const unsigned int); |
static bfd_boolean coff_new_section_hook |
(bfd *, asection *); |
static bfd_boolean coff_set_arch_mach_hook |
(bfd *, void *); |
static bfd_boolean coff_write_relocs |
(bfd *, int); |
static bfd_boolean coff_set_flags |
(bfd *, unsigned int *, unsigned short *); |
static bfd_boolean coff_set_arch_mach |
(bfd *, enum bfd_architecture, unsigned long) ATTRIBUTE_UNUSED; |
static bfd_boolean coff_compute_section_file_positions |
(bfd *); |
static bfd_boolean coff_write_object_contents |
(bfd *) ATTRIBUTE_UNUSED; |
static bfd_boolean coff_set_section_contents |
(bfd *, asection *, const void *, file_ptr, bfd_size_type); |
static void * buy_and_read |
(bfd *, file_ptr, bfd_size_type); |
static bfd_boolean coff_slurp_line_table |
(bfd *, asection *); |
static bfd_boolean coff_slurp_symbol_table |
(bfd *); |
static enum coff_symbol_classification coff_classify_symbol |
(bfd *, struct internal_syment *); |
static bfd_boolean coff_slurp_reloc_table |
(bfd *, asection *, asymbol **); |
static long coff_canonicalize_reloc |
(bfd *, asection *, arelent **, asymbol **); |
#ifndef coff_mkobject_hook |
static void * coff_mkobject_hook |
(bfd *, void *, void *); |
#endif |
#ifdef COFF_WITH_PE |
static flagword handle_COMDAT |
(bfd *, flagword, void *, const char *, asection *); |
#endif |
#ifdef COFF_IMAGE_WITH_PE |
static bfd_boolean coff_read_word |
(bfd *, unsigned int *); |
static unsigned int coff_compute_checksum |
(bfd *); |
static bfd_boolean coff_apply_checksum |
(bfd *); |
#endif |
#ifdef TICOFF |
static bfd_boolean ticoff0_bad_format_hook |
(bfd *, void * ); |
static bfd_boolean ticoff1_bad_format_hook |
(bfd *, void * ); |
#endif |
|
/* void warning(); */ |
|
#if defined (COFF_LONG_SECTION_NAMES) |
static bfd_boolean |
bfd_coff_set_long_section_names_allowed (bfd *abfd, int enable) |
{ |
coff_backend_info (abfd)->_bfd_coff_long_section_names = enable; |
return TRUE; |
} |
#else /* !defined (COFF_LONG_SECTION_NAMES) */ |
static bfd_boolean |
bfd_coff_set_long_section_names_disallowed (bfd *abfd, int enable) |
{ |
(void) abfd; |
(void) enable; |
return FALSE; |
} |
#endif /* defined (COFF_LONG_SECTION_NAMES) */ |
|
/* Return a word with STYP_* (scnhdr.s_flags) flags set to represent |
the incoming SEC_* flags. The inverse of this function is |
styp_to_sec_flags(). NOTE: If you add to/change this routine, you |
should probably mirror the changes in styp_to_sec_flags(). */ |
|
#ifndef COFF_WITH_PE |
|
/* Macros for setting debugging flags. */ |
|
#ifdef STYP_DEBUG |
#define STYP_XCOFF_DEBUG STYP_DEBUG |
#else |
#define STYP_XCOFF_DEBUG STYP_INFO |
#endif |
|
#ifdef COFF_ALIGN_IN_S_FLAGS |
#define STYP_DEBUG_INFO STYP_DSECT |
#else |
#define STYP_DEBUG_INFO STYP_INFO |
#endif |
|
static long |
sec_to_styp_flags (const char *sec_name, flagword sec_flags) |
{ |
long styp_flags = 0; |
|
if (!strcmp (sec_name, _TEXT)) |
{ |
styp_flags = STYP_TEXT; |
} |
else if (!strcmp (sec_name, _DATA)) |
{ |
styp_flags = STYP_DATA; |
} |
else if (!strcmp (sec_name, _BSS)) |
{ |
styp_flags = STYP_BSS; |
#ifdef _COMMENT |
} |
else if (!strcmp (sec_name, _COMMENT)) |
{ |
styp_flags = STYP_INFO; |
#endif /* _COMMENT */ |
#ifdef _LIB |
} |
else if (!strcmp (sec_name, _LIB)) |
{ |
styp_flags = STYP_LIB; |
#endif /* _LIB */ |
#ifdef _LIT |
} |
else if (!strcmp (sec_name, _LIT)) |
{ |
styp_flags = STYP_LIT; |
#endif /* _LIT */ |
} |
else if (CONST_STRNEQ (sec_name, DOT_DEBUG) |
|| CONST_STRNEQ (sec_name, DOT_ZDEBUG)) |
{ |
/* Handle the XCOFF debug section and DWARF2 debug sections. */ |
if (!sec_name[6]) |
styp_flags = STYP_XCOFF_DEBUG; |
else |
styp_flags = STYP_DEBUG_INFO; |
} |
else if (CONST_STRNEQ (sec_name, ".stab")) |
{ |
styp_flags = STYP_DEBUG_INFO; |
} |
#ifdef COFF_LONG_SECTION_NAMES |
else if (CONST_STRNEQ (sec_name, GNU_LINKONCE_WI) |
|| CONST_STRNEQ (sec_name, GNU_LINKONCE_WT)) |
{ |
styp_flags = STYP_DEBUG_INFO; |
} |
#endif |
#ifdef RS6000COFF_C |
else if (!strcmp (sec_name, _PAD)) |
{ |
styp_flags = STYP_PAD; |
} |
else if (!strcmp (sec_name, _LOADER)) |
{ |
styp_flags = STYP_LOADER; |
} |
else if (!strcmp (sec_name, _EXCEPT)) |
{ |
styp_flags = STYP_EXCEPT; |
} |
else if (!strcmp (sec_name, _TYPCHK)) |
{ |
styp_flags = STYP_TYPCHK; |
} |
else if (sec_flags & SEC_DEBUGGING) |
{ |
int i; |
|
for (i = 0; i < XCOFF_DWSECT_NBR_NAMES; i++) |
if (!strcmp (sec_name, xcoff_dwsect_names[i].name)) |
{ |
styp_flags = STYP_DWARF | xcoff_dwsect_names[i].flag; |
break; |
} |
} |
#endif |
/* Try and figure out what it should be */ |
else if (sec_flags & SEC_CODE) |
{ |
styp_flags = STYP_TEXT; |
} |
else if (sec_flags & SEC_DATA) |
{ |
styp_flags = STYP_DATA; |
} |
else if (sec_flags & SEC_READONLY) |
{ |
#ifdef STYP_LIT /* 29k readonly text/data section */ |
styp_flags = STYP_LIT; |
#else |
styp_flags = STYP_TEXT; |
#endif /* STYP_LIT */ |
} |
else if (sec_flags & SEC_LOAD) |
{ |
styp_flags = STYP_TEXT; |
} |
else if (sec_flags & SEC_ALLOC) |
{ |
styp_flags = STYP_BSS; |
} |
|
#ifdef STYP_CLINK |
if (sec_flags & SEC_TIC54X_CLINK) |
styp_flags |= STYP_CLINK; |
#endif |
|
#ifdef STYP_BLOCK |
if (sec_flags & SEC_TIC54X_BLOCK) |
styp_flags |= STYP_BLOCK; |
#endif |
|
#ifdef STYP_NOLOAD |
if ((sec_flags & (SEC_NEVER_LOAD | SEC_COFF_SHARED_LIBRARY)) != 0) |
styp_flags |= STYP_NOLOAD; |
#endif |
|
return styp_flags; |
} |
|
#else /* COFF_WITH_PE */ |
|
/* The PE version; see above for the general comments. The non-PE |
case seems to be more guessing, and breaks PE format; specifically, |
.rdata is readonly, but it sure ain't text. Really, all this |
should be set up properly in gas (or whatever assembler is in use), |
and honor whatever objcopy/strip, etc. sent us as input. */ |
|
static long |
sec_to_styp_flags (const char *sec_name, flagword sec_flags) |
{ |
long styp_flags = 0; |
bfd_boolean is_dbg = FALSE; |
|
if (CONST_STRNEQ (sec_name, DOT_DEBUG) |
|| CONST_STRNEQ (sec_name, DOT_ZDEBUG) |
#ifdef COFF_LONG_SECTION_NAMES |
|| CONST_STRNEQ (sec_name, GNU_LINKONCE_WI) |
|| CONST_STRNEQ (sec_name, GNU_LINKONCE_WT) |
#endif |
|| CONST_STRNEQ (sec_name, ".stab")) |
is_dbg = TRUE; |
|
/* caution: there are at least three groups of symbols that have |
very similar bits and meanings: IMAGE_SCN*, SEC_*, and STYP_*. |
SEC_* are the BFD internal flags, used for generic BFD |
information. STYP_* are the COFF section flags which appear in |
COFF files. IMAGE_SCN_* are the PE section flags which appear in |
PE files. The STYP_* flags and the IMAGE_SCN_* flags overlap, |
but there are more IMAGE_SCN_* flags. */ |
|
/* FIXME: There is no gas syntax to specify the debug section flag. */ |
if (is_dbg) |
{ |
sec_flags &= (SEC_LINK_ONCE | SEC_LINK_DUPLICATES_DISCARD |
| SEC_LINK_DUPLICATES_SAME_CONTENTS |
| SEC_LINK_DUPLICATES_SAME_SIZE); |
sec_flags |= SEC_DEBUGGING | SEC_READONLY; |
} |
|
/* skip LOAD */ |
/* READONLY later */ |
/* skip RELOC */ |
if ((sec_flags & SEC_CODE) != 0) |
styp_flags |= IMAGE_SCN_CNT_CODE; |
if ((sec_flags & (SEC_DATA | SEC_DEBUGGING)) != 0) |
styp_flags |= IMAGE_SCN_CNT_INITIALIZED_DATA; |
if ((sec_flags & SEC_ALLOC) != 0 && (sec_flags & SEC_LOAD) == 0) |
styp_flags |= IMAGE_SCN_CNT_UNINITIALIZED_DATA; /* ==STYP_BSS */ |
/* skip ROM */ |
/* skip constRUCTOR */ |
/* skip CONTENTS */ |
if ((sec_flags & SEC_IS_COMMON) != 0) |
styp_flags |= IMAGE_SCN_LNK_COMDAT; |
if ((sec_flags & SEC_DEBUGGING) != 0) |
styp_flags |= IMAGE_SCN_MEM_DISCARDABLE; |
if ((sec_flags & SEC_EXCLUDE) != 0 && !is_dbg) |
styp_flags |= IMAGE_SCN_LNK_REMOVE; |
if ((sec_flags & SEC_NEVER_LOAD) != 0 && !is_dbg) |
styp_flags |= IMAGE_SCN_LNK_REMOVE; |
/* skip IN_MEMORY */ |
/* skip SORT */ |
if (sec_flags & SEC_LINK_ONCE) |
styp_flags |= IMAGE_SCN_LNK_COMDAT; |
if ((sec_flags |
& (SEC_LINK_DUPLICATES_DISCARD | SEC_LINK_DUPLICATES_SAME_CONTENTS |
| SEC_LINK_DUPLICATES_SAME_SIZE)) != 0) |
styp_flags |= IMAGE_SCN_LNK_COMDAT; |
|
/* skip LINKER_CREATED */ |
|
if ((sec_flags & SEC_COFF_NOREAD) == 0) |
styp_flags |= IMAGE_SCN_MEM_READ; /* Invert NOREAD for read. */ |
if ((sec_flags & SEC_READONLY) == 0) |
styp_flags |= IMAGE_SCN_MEM_WRITE; /* Invert READONLY for write. */ |
if (sec_flags & SEC_CODE) |
styp_flags |= IMAGE_SCN_MEM_EXECUTE; /* CODE->EXECUTE. */ |
if (sec_flags & SEC_COFF_SHARED) |
styp_flags |= IMAGE_SCN_MEM_SHARED; /* Shared remains meaningful. */ |
|
return styp_flags; |
} |
|
#endif /* COFF_WITH_PE */ |
|
/* Return a word with SEC_* flags set to represent the incoming STYP_* |
flags (from scnhdr.s_flags). The inverse of this function is |
sec_to_styp_flags(). NOTE: If you add to/change this routine, you |
should probably mirror the changes in sec_to_styp_flags(). */ |
|
#ifndef COFF_WITH_PE |
|
static bfd_boolean |
styp_to_sec_flags (bfd *abfd ATTRIBUTE_UNUSED, |
void * hdr, |
const char *name, |
asection *section ATTRIBUTE_UNUSED, |
flagword *flags_ptr) |
{ |
struct internal_scnhdr *internal_s = (struct internal_scnhdr *) hdr; |
long styp_flags = internal_s->s_flags; |
flagword sec_flags = 0; |
|
#ifdef STYP_BLOCK |
if (styp_flags & STYP_BLOCK) |
sec_flags |= SEC_TIC54X_BLOCK; |
#endif |
|
#ifdef STYP_CLINK |
if (styp_flags & STYP_CLINK) |
sec_flags |= SEC_TIC54X_CLINK; |
#endif |
|
#ifdef STYP_NOLOAD |
if (styp_flags & STYP_NOLOAD) |
sec_flags |= SEC_NEVER_LOAD; |
#endif /* STYP_NOLOAD */ |
|
/* For 386 COFF, at least, an unloadable text or data section is |
actually a shared library section. */ |
if (styp_flags & STYP_TEXT) |
{ |
if (sec_flags & SEC_NEVER_LOAD) |
sec_flags |= SEC_CODE | SEC_COFF_SHARED_LIBRARY; |
else |
sec_flags |= SEC_CODE | SEC_LOAD | SEC_ALLOC; |
} |
else if (styp_flags & STYP_DATA) |
{ |
if (sec_flags & SEC_NEVER_LOAD) |
sec_flags |= SEC_DATA | SEC_COFF_SHARED_LIBRARY; |
else |
sec_flags |= SEC_DATA | SEC_LOAD | SEC_ALLOC; |
} |
else if (styp_flags & STYP_BSS) |
{ |
#ifdef BSS_NOLOAD_IS_SHARED_LIBRARY |
if (sec_flags & SEC_NEVER_LOAD) |
sec_flags |= SEC_ALLOC | SEC_COFF_SHARED_LIBRARY; |
else |
#endif |
sec_flags |= SEC_ALLOC; |
} |
else if (styp_flags & STYP_INFO) |
{ |
/* We mark these as SEC_DEBUGGING, but only if COFF_PAGE_SIZE is |
defined. coff_compute_section_file_positions uses |
COFF_PAGE_SIZE to ensure that the low order bits of the |
section VMA and the file offset match. If we don't know |
COFF_PAGE_SIZE, we can't ensure the correct correspondence, |
and demand page loading of the file will fail. */ |
#if defined (COFF_PAGE_SIZE) && !defined (COFF_ALIGN_IN_S_FLAGS) |
sec_flags |= SEC_DEBUGGING; |
#endif |
} |
else if (styp_flags & STYP_PAD) |
sec_flags = 0; |
#ifdef RS6000COFF_C |
else if (styp_flags & STYP_EXCEPT) |
sec_flags |= SEC_LOAD; |
else if (styp_flags & STYP_LOADER) |
sec_flags |= SEC_LOAD; |
else if (styp_flags & STYP_TYPCHK) |
sec_flags |= SEC_LOAD; |
else if (styp_flags & STYP_DWARF) |
sec_flags |= SEC_DEBUGGING; |
#endif |
else if (strcmp (name, _TEXT) == 0) |
{ |
if (sec_flags & SEC_NEVER_LOAD) |
sec_flags |= SEC_CODE | SEC_COFF_SHARED_LIBRARY; |
else |
sec_flags |= SEC_CODE | SEC_LOAD | SEC_ALLOC; |
} |
else if (strcmp (name, _DATA) == 0) |
{ |
if (sec_flags & SEC_NEVER_LOAD) |
sec_flags |= SEC_DATA | SEC_COFF_SHARED_LIBRARY; |
else |
sec_flags |= SEC_DATA | SEC_LOAD | SEC_ALLOC; |
} |
else if (strcmp (name, _BSS) == 0) |
{ |
#ifdef BSS_NOLOAD_IS_SHARED_LIBRARY |
if (sec_flags & SEC_NEVER_LOAD) |
sec_flags |= SEC_ALLOC | SEC_COFF_SHARED_LIBRARY; |
else |
#endif |
sec_flags |= SEC_ALLOC; |
} |
else if (CONST_STRNEQ (name, DOT_DEBUG) |
|| CONST_STRNEQ (name, DOT_ZDEBUG) |
#ifdef _COMMENT |
|| strcmp (name, _COMMENT) == 0 |
#endif |
#ifdef COFF_LONG_SECTION_NAMES |
|| CONST_STRNEQ (name, GNU_LINKONCE_WI) |
|| CONST_STRNEQ (name, GNU_LINKONCE_WT) |
#endif |
|| CONST_STRNEQ (name, ".stab")) |
{ |
#ifdef COFF_PAGE_SIZE |
sec_flags |= SEC_DEBUGGING; |
#endif |
} |
#ifdef _LIB |
else if (strcmp (name, _LIB) == 0) |
; |
#endif |
#ifdef _LIT |
else if (strcmp (name, _LIT) == 0) |
sec_flags = SEC_LOAD | SEC_ALLOC | SEC_READONLY; |
#endif |
else |
sec_flags |= SEC_ALLOC | SEC_LOAD; |
|
#ifdef STYP_LIT /* A29k readonly text/data section type. */ |
if ((styp_flags & STYP_LIT) == STYP_LIT) |
sec_flags = (SEC_LOAD | SEC_ALLOC | SEC_READONLY); |
#endif /* STYP_LIT */ |
|
#ifdef STYP_OTHER_LOAD /* Other loaded sections. */ |
if (styp_flags & STYP_OTHER_LOAD) |
sec_flags = (SEC_LOAD | SEC_ALLOC); |
#endif /* STYP_SDATA */ |
|
#if defined (COFF_LONG_SECTION_NAMES) && defined (COFF_SUPPORT_GNU_LINKONCE) |
/* As a GNU extension, if the name begins with .gnu.linkonce, we |
only link a single copy of the section. This is used to support |
g++. g++ will emit each template expansion in its own section. |
The symbols will be defined as weak, so that multiple definitions |
are permitted. The GNU linker extension is to actually discard |
all but one of the sections. */ |
if (CONST_STRNEQ (name, ".gnu.linkonce")) |
sec_flags |= SEC_LINK_ONCE | SEC_LINK_DUPLICATES_DISCARD; |
#endif |
|
if (flags_ptr == NULL) |
return FALSE; |
|
* flags_ptr = sec_flags; |
return TRUE; |
} |
|
#else /* COFF_WITH_PE */ |
|
static flagword |
handle_COMDAT (bfd * abfd, |
flagword sec_flags, |
void * hdr, |
const char *name, |
asection *section) |
{ |
struct internal_scnhdr *internal_s = (struct internal_scnhdr *) hdr; |
bfd_byte *esymstart, *esym, *esymend; |
int seen_state = 0; |
char *target_name = NULL; |
|
sec_flags |= SEC_LINK_ONCE; |
|
/* Unfortunately, the PE format stores essential information in |
the symbol table, of all places. We need to extract that |
information now, so that objdump and the linker will know how |
to handle the section without worrying about the symbols. We |
can't call slurp_symtab, because the linker doesn't want the |
swapped symbols. */ |
|
/* COMDAT sections are special. The first symbol is the section |
symbol, which tells what kind of COMDAT section it is. The |
second symbol is the "comdat symbol" - the one with the |
unique name. GNU uses the section symbol for the unique |
name; MS uses ".text" for every comdat section. Sigh. - DJ */ |
|
/* This is not mirrored in sec_to_styp_flags(), but there |
doesn't seem to be a need to, either, and it would at best be |
rather messy. */ |
|
if (! _bfd_coff_get_external_symbols (abfd)) |
return sec_flags; |
|
esymstart = esym = (bfd_byte *) obj_coff_external_syms (abfd); |
esymend = esym + obj_raw_syment_count (abfd) * bfd_coff_symesz (abfd); |
|
while (esym < esymend) |
{ |
struct internal_syment isym; |
char buf[SYMNMLEN + 1]; |
const char *symname; |
|
bfd_coff_swap_sym_in (abfd, esym, & isym); |
|
if (sizeof (internal_s->s_name) > SYMNMLEN) |
{ |
/* This case implies that the matching |
symbol name will be in the string table. */ |
abort (); |
} |
|
if (isym.n_scnum == section->target_index) |
{ |
/* According to the MSVC documentation, the first |
TWO entries with the section # are both of |
interest to us. The first one is the "section |
symbol" (section name). The second is the comdat |
symbol name. Here, we've found the first |
qualifying entry; we distinguish it from the |
second with a state flag. |
|
In the case of gas-generated (at least until that |
is fixed) .o files, it isn't necessarily the |
second one. It may be some other later symbol. |
|
Since gas also doesn't follow MS conventions and |
emits the section similar to .text$<name>, where |
<something> is the name we're looking for, we |
distinguish the two as follows: |
|
If the section name is simply a section name (no |
$) we presume it's MS-generated, and look at |
precisely the second symbol for the comdat name. |
If the section name has a $, we assume it's |
gas-generated, and look for <something> (whatever |
follows the $) as the comdat symbol. */ |
|
/* All 3 branches use this. */ |
symname = _bfd_coff_internal_syment_name (abfd, &isym, buf); |
|
if (symname == NULL) |
abort (); |
|
switch (seen_state) |
{ |
case 0: |
{ |
/* The first time we've seen the symbol. */ |
union internal_auxent aux; |
|
/* If it isn't the stuff we're expecting, die; |
The MS documentation is vague, but it |
appears that the second entry serves BOTH |
as the comdat symbol and the defining |
symbol record (either C_STAT or C_EXT, |
possibly with an aux entry with debug |
information if it's a function.) It |
appears the only way to find the second one |
is to count. (On Intel, they appear to be |
adjacent, but on Alpha, they have been |
found separated.) |
|
Here, we think we've found the first one, |
but there's some checking we can do to be |
sure. */ |
|
if (! ((isym.n_sclass == C_STAT |
|| isym.n_sclass == C_EXT) |
&& BTYPE (isym.n_type) == T_NULL |
&& isym.n_value == 0)) |
abort (); |
|
/* FIXME LATER: MSVC generates section names |
like .text for comdats. Gas generates |
names like .text$foo__Fv (in the case of a |
function). See comment above for more. */ |
|
if (isym.n_sclass == C_STAT && strcmp (name, symname) != 0) |
_bfd_error_handler (_("%B: warning: COMDAT symbol '%s' does not match section name '%s'"), |
abfd, symname, name); |
|
seen_state = 1; |
|
/* This is the section symbol. */ |
bfd_coff_swap_aux_in (abfd, (esym + bfd_coff_symesz (abfd)), |
isym.n_type, isym.n_sclass, |
0, isym.n_numaux, & aux); |
|
target_name = strchr (name, '$'); |
if (target_name != NULL) |
{ |
/* Gas mode. */ |
seen_state = 2; |
/* Skip the `$'. */ |
target_name += 1; |
} |
|
/* FIXME: Microsoft uses NODUPLICATES and |
ASSOCIATIVE, but gnu uses ANY and |
SAME_SIZE. Unfortunately, gnu doesn't do |
the comdat symbols right. So, until we can |
fix it to do the right thing, we are |
temporarily disabling comdats for the MS |
types (they're used in DLLs and C++, but we |
don't support *their* C++ libraries anyway |
- DJ. */ |
|
/* Cygwin does not follow the MS style, and |
uses ANY and SAME_SIZE where NODUPLICATES |
and ASSOCIATIVE should be used. For |
Interix, we just do the right thing up |
front. */ |
|
switch (aux.x_scn.x_comdat) |
{ |
case IMAGE_COMDAT_SELECT_NODUPLICATES: |
#ifdef STRICT_PE_FORMAT |
sec_flags |= SEC_LINK_DUPLICATES_ONE_ONLY; |
#else |
sec_flags &= ~SEC_LINK_ONCE; |
#endif |
break; |
|
case IMAGE_COMDAT_SELECT_ANY: |
sec_flags |= SEC_LINK_DUPLICATES_DISCARD; |
break; |
|
case IMAGE_COMDAT_SELECT_SAME_SIZE: |
sec_flags |= SEC_LINK_DUPLICATES_SAME_SIZE; |
break; |
|
case IMAGE_COMDAT_SELECT_EXACT_MATCH: |
/* Not yet fully implemented ??? */ |
sec_flags |= SEC_LINK_DUPLICATES_SAME_CONTENTS; |
break; |
|
/* debug$S gets this case; other |
implications ??? */ |
|
/* There may be no symbol... we'll search |
the whole table... Is this the right |
place to play this game? Or should we do |
it when reading it in. */ |
case IMAGE_COMDAT_SELECT_ASSOCIATIVE: |
#ifdef STRICT_PE_FORMAT |
/* FIXME: This is not currently implemented. */ |
sec_flags |= SEC_LINK_DUPLICATES_DISCARD; |
#else |
sec_flags &= ~SEC_LINK_ONCE; |
#endif |
break; |
|
default: /* 0 means "no symbol" */ |
/* debug$F gets this case; other |
implications ??? */ |
sec_flags |= SEC_LINK_DUPLICATES_DISCARD; |
break; |
} |
} |
break; |
|
case 2: |
/* Gas mode: the first matching on partial name. */ |
|
#ifndef TARGET_UNDERSCORE |
#define TARGET_UNDERSCORE 0 |
#endif |
/* Is this the name we're looking for ? */ |
if (strcmp (target_name, |
symname + (TARGET_UNDERSCORE ? 1 : 0)) != 0) |
{ |
/* Not the name we're looking for */ |
esym += (isym.n_numaux + 1) * bfd_coff_symesz (abfd); |
continue; |
} |
/* Fall through. */ |
case 1: |
/* MSVC mode: the lexically second symbol (or |
drop through from the above). */ |
{ |
char *newname; |
bfd_size_type amt; |
|
/* This must the second symbol with the |
section #. It is the actual symbol name. |
Intel puts the two adjacent, but Alpha (at |
least) spreads them out. */ |
|
amt = sizeof (struct coff_comdat_info); |
coff_section_data (abfd, section)->comdat |
= (struct coff_comdat_info *) bfd_alloc (abfd, amt); |
if (coff_section_data (abfd, section)->comdat == NULL) |
abort (); |
|
coff_section_data (abfd, section)->comdat->symbol = |
(esym - esymstart) / bfd_coff_symesz (abfd); |
|
amt = strlen (symname) + 1; |
newname = (char *) bfd_alloc (abfd, amt); |
if (newname == NULL) |
abort (); |
|
strcpy (newname, symname); |
coff_section_data (abfd, section)->comdat->name |
= newname; |
} |
|
goto breakloop; |
} |
} |
|
esym += (isym.n_numaux + 1) * bfd_coff_symesz (abfd); |
} |
|
breakloop: |
return sec_flags; |
} |
|
|
/* The PE version; see above for the general comments. |
|
Since to set the SEC_LINK_ONCE and associated flags, we have to |
look at the symbol table anyway, we return the symbol table index |
of the symbol being used as the COMDAT symbol. This is admittedly |
ugly, but there's really nowhere else that we have access to the |
required information. FIXME: Is the COMDAT symbol index used for |
any purpose other than objdump? */ |
|
static bfd_boolean |
styp_to_sec_flags (bfd *abfd, |
void * hdr, |
const char *name, |
asection *section, |
flagword *flags_ptr) |
{ |
struct internal_scnhdr *internal_s = (struct internal_scnhdr *) hdr; |
long styp_flags = internal_s->s_flags; |
flagword sec_flags; |
bfd_boolean result = TRUE; |
bfd_boolean is_dbg = FALSE; |
|
if (CONST_STRNEQ (name, DOT_DEBUG) |
|| CONST_STRNEQ (name, DOT_ZDEBUG) |
#ifdef COFF_LONG_SECTION_NAMES |
|| CONST_STRNEQ (name, GNU_LINKONCE_WI) |
|| CONST_STRNEQ (name, GNU_LINKONCE_WT) |
#endif |
|| CONST_STRNEQ (name, ".stab")) |
is_dbg = TRUE; |
/* Assume read only unless IMAGE_SCN_MEM_WRITE is specified. */ |
sec_flags = SEC_READONLY; |
|
/* If section disallows read, then set the NOREAD flag. */ |
if ((styp_flags & IMAGE_SCN_MEM_READ) == 0) |
sec_flags |= SEC_COFF_NOREAD; |
|
/* Process each flag bit in styp_flags in turn. */ |
while (styp_flags) |
{ |
long flag = styp_flags & - styp_flags; |
char * unhandled = NULL; |
|
styp_flags &= ~ flag; |
|
/* We infer from the distinct read/write/execute bits the settings |
of some of the bfd flags; the actual values, should we need them, |
are also in pei_section_data (abfd, section)->pe_flags. */ |
|
switch (flag) |
{ |
case STYP_DSECT: |
unhandled = "STYP_DSECT"; |
break; |
case STYP_GROUP: |
unhandled = "STYP_GROUP"; |
break; |
case STYP_COPY: |
unhandled = "STYP_COPY"; |
break; |
case STYP_OVER: |
unhandled = "STYP_OVER"; |
break; |
#ifdef SEC_NEVER_LOAD |
case STYP_NOLOAD: |
sec_flags |= SEC_NEVER_LOAD; |
break; |
#endif |
case IMAGE_SCN_MEM_READ: |
sec_flags &= ~SEC_COFF_NOREAD; |
break; |
case IMAGE_SCN_TYPE_NO_PAD: |
/* Skip. */ |
break; |
case IMAGE_SCN_LNK_OTHER: |
unhandled = "IMAGE_SCN_LNK_OTHER"; |
break; |
case IMAGE_SCN_MEM_NOT_CACHED: |
unhandled = "IMAGE_SCN_MEM_NOT_CACHED"; |
break; |
case IMAGE_SCN_MEM_NOT_PAGED: |
/* Generate a warning message rather using the 'unhandled' |
variable as this will allow some .sys files generate by |
other toolchains to be processed. See bugzilla issue 196. */ |
_bfd_error_handler (_("%B: Warning: Ignoring section flag IMAGE_SCN_MEM_NOT_PAGED in section %s"), |
abfd, name); |
break; |
case IMAGE_SCN_MEM_EXECUTE: |
sec_flags |= SEC_CODE; |
break; |
case IMAGE_SCN_MEM_WRITE: |
sec_flags &= ~ SEC_READONLY; |
break; |
case IMAGE_SCN_MEM_DISCARDABLE: |
/* The MS PE spec says that debug sections are DISCARDABLE, |
but the presence of a DISCARDABLE flag does not necessarily |
mean that a given section contains debug information. Thus |
we only set the SEC_DEBUGGING flag on sections that we |
recognise as containing debug information. */ |
if (is_dbg |
#ifdef _COMMENT |
|| strcmp (name, _COMMENT) == 0 |
#endif |
) |
{ |
sec_flags |= SEC_DEBUGGING | SEC_READONLY; |
} |
break; |
case IMAGE_SCN_MEM_SHARED: |
sec_flags |= SEC_COFF_SHARED; |
break; |
case IMAGE_SCN_LNK_REMOVE: |
if (!is_dbg) |
sec_flags |= SEC_EXCLUDE; |
break; |
case IMAGE_SCN_CNT_CODE: |
sec_flags |= SEC_CODE | SEC_ALLOC | SEC_LOAD; |
break; |
case IMAGE_SCN_CNT_INITIALIZED_DATA: |
if (is_dbg) |
sec_flags |= SEC_DEBUGGING; |
else |
sec_flags |= SEC_DATA | SEC_ALLOC | SEC_LOAD; |
break; |
case IMAGE_SCN_CNT_UNINITIALIZED_DATA: |
sec_flags |= SEC_ALLOC; |
break; |
case IMAGE_SCN_LNK_INFO: |
/* We mark these as SEC_DEBUGGING, but only if COFF_PAGE_SIZE is |
defined. coff_compute_section_file_positions uses |
COFF_PAGE_SIZE to ensure that the low order bits of the |
section VMA and the file offset match. If we don't know |
COFF_PAGE_SIZE, we can't ensure the correct correspondence, |
and demand page loading of the file will fail. */ |
#ifdef COFF_PAGE_SIZE |
sec_flags |= SEC_DEBUGGING; |
#endif |
break; |
case IMAGE_SCN_LNK_COMDAT: |
/* COMDAT gets very special treatment. */ |
sec_flags = handle_COMDAT (abfd, sec_flags, hdr, name, section); |
break; |
default: |
/* Silently ignore for now. */ |
break; |
} |
|
/* If the section flag was not handled, report it here. */ |
if (unhandled != NULL) |
{ |
(*_bfd_error_handler) |
(_("%B (%s): Section flag %s (0x%x) ignored"), |
abfd, name, unhandled, flag); |
result = FALSE; |
} |
} |
|
#if defined (COFF_LONG_SECTION_NAMES) && defined (COFF_SUPPORT_GNU_LINKONCE) |
/* As a GNU extension, if the name begins with .gnu.linkonce, we |
only link a single copy of the section. This is used to support |
g++. g++ will emit each template expansion in its own section. |
The symbols will be defined as weak, so that multiple definitions |
are permitted. The GNU linker extension is to actually discard |
all but one of the sections. */ |
if (CONST_STRNEQ (name, ".gnu.linkonce")) |
sec_flags |= SEC_LINK_ONCE | SEC_LINK_DUPLICATES_DISCARD; |
#endif |
|
if (flags_ptr) |
* flags_ptr = sec_flags; |
|
return result; |
} |
|
#endif /* COFF_WITH_PE */ |
|
#define get_index(symbol) ((symbol)->udata.i) |
|
/* |
INTERNAL_DEFINITION |
bfd_coff_backend_data |
|
CODE_FRAGMENT |
|
.{* COFF symbol classifications. *} |
. |
.enum coff_symbol_classification |
.{ |
. {* Global symbol. *} |
. COFF_SYMBOL_GLOBAL, |
. {* Common symbol. *} |
. COFF_SYMBOL_COMMON, |
. {* Undefined symbol. *} |
. COFF_SYMBOL_UNDEFINED, |
. {* Local symbol. *} |
. COFF_SYMBOL_LOCAL, |
. {* PE section symbol. *} |
. COFF_SYMBOL_PE_SECTION |
.}; |
. |
Special entry points for gdb to swap in coff symbol table parts: |
.typedef struct |
.{ |
. void (*_bfd_coff_swap_aux_in) |
. (bfd *, void *, int, int, int, int, void *); |
. |
. void (*_bfd_coff_swap_sym_in) |
. (bfd *, void *, void *); |
. |
. void (*_bfd_coff_swap_lineno_in) |
. (bfd *, void *, void *); |
. |
. unsigned int (*_bfd_coff_swap_aux_out) |
. (bfd *, void *, int, int, int, int, void *); |
. |
. unsigned int (*_bfd_coff_swap_sym_out) |
. (bfd *, void *, void *); |
. |
. unsigned int (*_bfd_coff_swap_lineno_out) |
. (bfd *, void *, void *); |
. |
. unsigned int (*_bfd_coff_swap_reloc_out) |
. (bfd *, void *, void *); |
. |
. unsigned int (*_bfd_coff_swap_filehdr_out) |
. (bfd *, void *, void *); |
. |
. unsigned int (*_bfd_coff_swap_aouthdr_out) |
. (bfd *, void *, void *); |
. |
. unsigned int (*_bfd_coff_swap_scnhdr_out) |
. (bfd *, void *, void *); |
. |
. unsigned int _bfd_filhsz; |
. unsigned int _bfd_aoutsz; |
. unsigned int _bfd_scnhsz; |
. unsigned int _bfd_symesz; |
. unsigned int _bfd_auxesz; |
. unsigned int _bfd_relsz; |
. unsigned int _bfd_linesz; |
. unsigned int _bfd_filnmlen; |
. bfd_boolean _bfd_coff_long_filenames; |
. |
. bfd_boolean _bfd_coff_long_section_names; |
. bfd_boolean (*_bfd_coff_set_long_section_names) |
. (bfd *, int); |
. |
. unsigned int _bfd_coff_default_section_alignment_power; |
. bfd_boolean _bfd_coff_force_symnames_in_strings; |
. unsigned int _bfd_coff_debug_string_prefix_length; |
. |
. void (*_bfd_coff_swap_filehdr_in) |
. (bfd *, void *, void *); |
. |
. void (*_bfd_coff_swap_aouthdr_in) |
. (bfd *, void *, void *); |
. |
. void (*_bfd_coff_swap_scnhdr_in) |
. (bfd *, void *, void *); |
. |
. void (*_bfd_coff_swap_reloc_in) |
. (bfd *abfd, void *, void *); |
. |
. bfd_boolean (*_bfd_coff_bad_format_hook) |
. (bfd *, void *); |
. |
. bfd_boolean (*_bfd_coff_set_arch_mach_hook) |
. (bfd *, void *); |
. |
. void * (*_bfd_coff_mkobject_hook) |
. (bfd *, void *, void *); |
. |
. bfd_boolean (*_bfd_styp_to_sec_flags_hook) |
. (bfd *, void *, const char *, asection *, flagword *); |
. |
. void (*_bfd_set_alignment_hook) |
. (bfd *, asection *, void *); |
. |
. bfd_boolean (*_bfd_coff_slurp_symbol_table) |
. (bfd *); |
. |
. bfd_boolean (*_bfd_coff_symname_in_debug) |
. (bfd *, struct internal_syment *); |
. |
. bfd_boolean (*_bfd_coff_pointerize_aux_hook) |
. (bfd *, combined_entry_type *, combined_entry_type *, |
. unsigned int, combined_entry_type *); |
. |
. bfd_boolean (*_bfd_coff_print_aux) |
. (bfd *, FILE *, combined_entry_type *, combined_entry_type *, |
. combined_entry_type *, unsigned int); |
. |
. void (*_bfd_coff_reloc16_extra_cases) |
. (bfd *, struct bfd_link_info *, struct bfd_link_order *, arelent *, |
. bfd_byte *, unsigned int *, unsigned int *); |
. |
. int (*_bfd_coff_reloc16_estimate) |
. (bfd *, asection *, arelent *, unsigned int, |
. struct bfd_link_info *); |
. |
. enum coff_symbol_classification (*_bfd_coff_classify_symbol) |
. (bfd *, struct internal_syment *); |
. |
. bfd_boolean (*_bfd_coff_compute_section_file_positions) |
. (bfd *); |
. |
. bfd_boolean (*_bfd_coff_start_final_link) |
. (bfd *, struct bfd_link_info *); |
. |
. bfd_boolean (*_bfd_coff_relocate_section) |
. (bfd *, struct bfd_link_info *, bfd *, asection *, bfd_byte *, |
. struct internal_reloc *, struct internal_syment *, asection **); |
. |
. reloc_howto_type *(*_bfd_coff_rtype_to_howto) |
. (bfd *, asection *, struct internal_reloc *, |
. struct coff_link_hash_entry *, struct internal_syment *, |
. bfd_vma *); |
. |
. bfd_boolean (*_bfd_coff_adjust_symndx) |
. (bfd *, struct bfd_link_info *, bfd *, asection *, |
. struct internal_reloc *, bfd_boolean *); |
. |
. bfd_boolean (*_bfd_coff_link_add_one_symbol) |
. (struct bfd_link_info *, bfd *, const char *, flagword, |
. asection *, bfd_vma, const char *, bfd_boolean, bfd_boolean, |
. struct bfd_link_hash_entry **); |
. |
. bfd_boolean (*_bfd_coff_link_output_has_begun) |
. (bfd *, struct coff_final_link_info *); |
. |
. bfd_boolean (*_bfd_coff_final_link_postscript) |
. (bfd *, struct coff_final_link_info *); |
. |
. bfd_boolean (*_bfd_coff_print_pdata) |
. (bfd *, void *); |
. |
.} bfd_coff_backend_data; |
. |
.#define coff_backend_info(abfd) \ |
. ((bfd_coff_backend_data *) (abfd)->xvec->backend_data) |
. |
.#define bfd_coff_swap_aux_in(a,e,t,c,ind,num,i) \ |
. ((coff_backend_info (a)->_bfd_coff_swap_aux_in) (a,e,t,c,ind,num,i)) |
. |
.#define bfd_coff_swap_sym_in(a,e,i) \ |
. ((coff_backend_info (a)->_bfd_coff_swap_sym_in) (a,e,i)) |
. |
.#define bfd_coff_swap_lineno_in(a,e,i) \ |
. ((coff_backend_info ( a)->_bfd_coff_swap_lineno_in) (a,e,i)) |
. |
.#define bfd_coff_swap_reloc_out(abfd, i, o) \ |
. ((coff_backend_info (abfd)->_bfd_coff_swap_reloc_out) (abfd, i, o)) |
. |
.#define bfd_coff_swap_lineno_out(abfd, i, o) \ |
. ((coff_backend_info (abfd)->_bfd_coff_swap_lineno_out) (abfd, i, o)) |
. |
.#define bfd_coff_swap_aux_out(a,i,t,c,ind,num,o) \ |
. ((coff_backend_info (a)->_bfd_coff_swap_aux_out) (a,i,t,c,ind,num,o)) |
. |
.#define bfd_coff_swap_sym_out(abfd, i,o) \ |
. ((coff_backend_info (abfd)->_bfd_coff_swap_sym_out) (abfd, i, o)) |
. |
.#define bfd_coff_swap_scnhdr_out(abfd, i,o) \ |
. ((coff_backend_info (abfd)->_bfd_coff_swap_scnhdr_out) (abfd, i, o)) |
. |
.#define bfd_coff_swap_filehdr_out(abfd, i,o) \ |
. ((coff_backend_info (abfd)->_bfd_coff_swap_filehdr_out) (abfd, i, o)) |
. |
.#define bfd_coff_swap_aouthdr_out(abfd, i,o) \ |
. ((coff_backend_info (abfd)->_bfd_coff_swap_aouthdr_out) (abfd, i, o)) |
. |
.#define bfd_coff_filhsz(abfd) (coff_backend_info (abfd)->_bfd_filhsz) |
.#define bfd_coff_aoutsz(abfd) (coff_backend_info (abfd)->_bfd_aoutsz) |
.#define bfd_coff_scnhsz(abfd) (coff_backend_info (abfd)->_bfd_scnhsz) |
.#define bfd_coff_symesz(abfd) (coff_backend_info (abfd)->_bfd_symesz) |
.#define bfd_coff_auxesz(abfd) (coff_backend_info (abfd)->_bfd_auxesz) |
.#define bfd_coff_relsz(abfd) (coff_backend_info (abfd)->_bfd_relsz) |
.#define bfd_coff_linesz(abfd) (coff_backend_info (abfd)->_bfd_linesz) |
.#define bfd_coff_filnmlen(abfd) (coff_backend_info (abfd)->_bfd_filnmlen) |
.#define bfd_coff_long_filenames(abfd) \ |
. (coff_backend_info (abfd)->_bfd_coff_long_filenames) |
.#define bfd_coff_long_section_names(abfd) \ |
. (coff_backend_info (abfd)->_bfd_coff_long_section_names) |
.#define bfd_coff_set_long_section_names(abfd, enable) \ |
. ((coff_backend_info (abfd)->_bfd_coff_set_long_section_names) (abfd, enable)) |
.#define bfd_coff_default_section_alignment_power(abfd) \ |
. (coff_backend_info (abfd)->_bfd_coff_default_section_alignment_power) |
.#define bfd_coff_swap_filehdr_in(abfd, i,o) \ |
. ((coff_backend_info (abfd)->_bfd_coff_swap_filehdr_in) (abfd, i, o)) |
. |
.#define bfd_coff_swap_aouthdr_in(abfd, i,o) \ |
. ((coff_backend_info (abfd)->_bfd_coff_swap_aouthdr_in) (abfd, i, o)) |
. |
.#define bfd_coff_swap_scnhdr_in(abfd, i,o) \ |
. ((coff_backend_info (abfd)->_bfd_coff_swap_scnhdr_in) (abfd, i, o)) |
. |
.#define bfd_coff_swap_reloc_in(abfd, i, o) \ |
. ((coff_backend_info (abfd)->_bfd_coff_swap_reloc_in) (abfd, i, o)) |
. |
.#define bfd_coff_bad_format_hook(abfd, filehdr) \ |
. ((coff_backend_info (abfd)->_bfd_coff_bad_format_hook) (abfd, filehdr)) |
. |
.#define bfd_coff_set_arch_mach_hook(abfd, filehdr)\ |
. ((coff_backend_info (abfd)->_bfd_coff_set_arch_mach_hook) (abfd, filehdr)) |
.#define bfd_coff_mkobject_hook(abfd, filehdr, aouthdr)\ |
. ((coff_backend_info (abfd)->_bfd_coff_mkobject_hook)\ |
. (abfd, filehdr, aouthdr)) |
. |
.#define bfd_coff_styp_to_sec_flags_hook(abfd, scnhdr, name, section, flags_ptr)\ |
. ((coff_backend_info (abfd)->_bfd_styp_to_sec_flags_hook)\ |
. (abfd, scnhdr, name, section, flags_ptr)) |
. |
.#define bfd_coff_set_alignment_hook(abfd, sec, scnhdr)\ |
. ((coff_backend_info (abfd)->_bfd_set_alignment_hook) (abfd, sec, scnhdr)) |
. |
.#define bfd_coff_slurp_symbol_table(abfd)\ |
. ((coff_backend_info (abfd)->_bfd_coff_slurp_symbol_table) (abfd)) |
. |
.#define bfd_coff_symname_in_debug(abfd, sym)\ |
. ((coff_backend_info (abfd)->_bfd_coff_symname_in_debug) (abfd, sym)) |
. |
.#define bfd_coff_force_symnames_in_strings(abfd)\ |
. (coff_backend_info (abfd)->_bfd_coff_force_symnames_in_strings) |
. |
.#define bfd_coff_debug_string_prefix_length(abfd)\ |
. (coff_backend_info (abfd)->_bfd_coff_debug_string_prefix_length) |
. |
.#define bfd_coff_print_aux(abfd, file, base, symbol, aux, indaux)\ |
. ((coff_backend_info (abfd)->_bfd_coff_print_aux)\ |
. (abfd, file, base, symbol, aux, indaux)) |
. |
.#define bfd_coff_reloc16_extra_cases(abfd, link_info, link_order,\ |
. reloc, data, src_ptr, dst_ptr)\ |
. ((coff_backend_info (abfd)->_bfd_coff_reloc16_extra_cases)\ |
. (abfd, link_info, link_order, reloc, data, src_ptr, dst_ptr)) |
. |
.#define bfd_coff_reloc16_estimate(abfd, section, reloc, shrink, link_info)\ |
. ((coff_backend_info (abfd)->_bfd_coff_reloc16_estimate)\ |
. (abfd, section, reloc, shrink, link_info)) |
. |
.#define bfd_coff_classify_symbol(abfd, sym)\ |
. ((coff_backend_info (abfd)->_bfd_coff_classify_symbol)\ |
. (abfd, sym)) |
. |
.#define bfd_coff_compute_section_file_positions(abfd)\ |
. ((coff_backend_info (abfd)->_bfd_coff_compute_section_file_positions)\ |
. (abfd)) |
. |
.#define bfd_coff_start_final_link(obfd, info)\ |
. ((coff_backend_info (obfd)->_bfd_coff_start_final_link)\ |
. (obfd, info)) |
.#define bfd_coff_relocate_section(obfd,info,ibfd,o,con,rel,isyms,secs)\ |
. ((coff_backend_info (ibfd)->_bfd_coff_relocate_section)\ |
. (obfd, info, ibfd, o, con, rel, isyms, secs)) |
.#define bfd_coff_rtype_to_howto(abfd, sec, rel, h, sym, addendp)\ |
. ((coff_backend_info (abfd)->_bfd_coff_rtype_to_howto)\ |
. (abfd, sec, rel, h, sym, addendp)) |
.#define bfd_coff_adjust_symndx(obfd, info, ibfd, sec, rel, adjustedp)\ |
. ((coff_backend_info (abfd)->_bfd_coff_adjust_symndx)\ |
. (obfd, info, ibfd, sec, rel, adjustedp)) |
.#define bfd_coff_link_add_one_symbol(info, abfd, name, flags, section,\ |
. value, string, cp, coll, hashp)\ |
. ((coff_backend_info (abfd)->_bfd_coff_link_add_one_symbol)\ |
. (info, abfd, name, flags, section, value, string, cp, coll, hashp)) |
. |
.#define bfd_coff_link_output_has_begun(a,p) \ |
. ((coff_backend_info (a)->_bfd_coff_link_output_has_begun) (a, p)) |
.#define bfd_coff_final_link_postscript(a,p) \ |
. ((coff_backend_info (a)->_bfd_coff_final_link_postscript) (a, p)) |
. |
.#define bfd_coff_have_print_pdata(a) \ |
. (coff_backend_info (a)->_bfd_coff_print_pdata) |
.#define bfd_coff_print_pdata(a,p) \ |
. ((coff_backend_info (a)->_bfd_coff_print_pdata) (a, p)) |
. |
.{* Macro: Returns true if the bfd is a PE executable as opposed to a |
. PE object file. *} |
.#define bfd_pei_p(abfd) \ |
. (CONST_STRNEQ ((abfd)->xvec->name, "pei-")) |
*/ |
|
/* See whether the magic number matches. */ |
|
static bfd_boolean |
coff_bad_format_hook (bfd * abfd ATTRIBUTE_UNUSED, void * filehdr) |
{ |
struct internal_filehdr *internal_f = (struct internal_filehdr *) filehdr; |
|
if (BADMAG (*internal_f)) |
return FALSE; |
|
/* If the optional header is NULL or not the correct size then |
quit; the only difference I can see between m88k dgux headers (MC88DMAGIC) |
and Intel 960 readwrite headers (I960WRMAGIC) is that the |
optional header is of a different size. |
|
But the mips keeps extra stuff in it's opthdr, so dont check |
when doing that. */ |
|
#if defined(M88) || defined(I960) |
if (internal_f->f_opthdr != 0 && bfd_coff_aoutsz (abfd) != internal_f->f_opthdr) |
return FALSE; |
#endif |
|
return TRUE; |
} |
|
#ifdef TICOFF |
static bfd_boolean |
ticoff0_bad_format_hook (bfd *abfd ATTRIBUTE_UNUSED, void * filehdr) |
{ |
struct internal_filehdr *internal_f = (struct internal_filehdr *) filehdr; |
|
if (COFF0_BADMAG (*internal_f)) |
return FALSE; |
|
return TRUE; |
} |
#endif |
|
#ifdef TICOFF |
static bfd_boolean |
ticoff1_bad_format_hook (bfd *abfd ATTRIBUTE_UNUSED, void * filehdr) |
{ |
struct internal_filehdr *internal_f = (struct internal_filehdr *) filehdr; |
|
if (COFF1_BADMAG (*internal_f)) |
return FALSE; |
|
return TRUE; |
} |
#endif |
|
/* Check whether this section uses an alignment other than the |
default. */ |
|
static void |
coff_set_custom_section_alignment (bfd *abfd ATTRIBUTE_UNUSED, |
asection *section, |
const struct coff_section_alignment_entry *alignment_table, |
const unsigned int table_size) |
{ |
const unsigned int default_alignment = COFF_DEFAULT_SECTION_ALIGNMENT_POWER; |
unsigned int i; |
|
for (i = 0; i < table_size; ++i) |
{ |
const char *secname = bfd_get_section_name (abfd, section); |
|
if (alignment_table[i].comparison_length == (unsigned int) -1 |
? strcmp (alignment_table[i].name, secname) == 0 |
: strncmp (alignment_table[i].name, secname, |
alignment_table[i].comparison_length) == 0) |
break; |
} |
if (i >= table_size) |
return; |
|
if (alignment_table[i].default_alignment_min != COFF_ALIGNMENT_FIELD_EMPTY |
&& default_alignment < alignment_table[i].default_alignment_min) |
return; |
|
if (alignment_table[i].default_alignment_max != COFF_ALIGNMENT_FIELD_EMPTY |
#if COFF_DEFAULT_SECTION_ALIGNMENT_POWER != 0 |
&& default_alignment > alignment_table[i].default_alignment_max |
#endif |
) |
return; |
|
section->alignment_power = alignment_table[i].alignment_power; |
} |
|
/* Custom section alignment records. */ |
|
static const struct coff_section_alignment_entry |
coff_section_alignment_table[] = |
{ |
#ifdef COFF_SECTION_ALIGNMENT_ENTRIES |
COFF_SECTION_ALIGNMENT_ENTRIES, |
#endif |
/* There must not be any gaps between .stabstr sections. */ |
{ COFF_SECTION_NAME_PARTIAL_MATCH (".stabstr"), |
1, COFF_ALIGNMENT_FIELD_EMPTY, 0 }, |
/* The .stab section must be aligned to 2**2 at most, to avoid gaps. */ |
{ COFF_SECTION_NAME_PARTIAL_MATCH (".stab"), |
3, COFF_ALIGNMENT_FIELD_EMPTY, 2 }, |
/* Similarly for the .ctors and .dtors sections. */ |
{ COFF_SECTION_NAME_EXACT_MATCH (".ctors"), |
3, COFF_ALIGNMENT_FIELD_EMPTY, 2 }, |
{ COFF_SECTION_NAME_EXACT_MATCH (".dtors"), |
3, COFF_ALIGNMENT_FIELD_EMPTY, 2 } |
}; |
|
static const unsigned int coff_section_alignment_table_size = |
sizeof coff_section_alignment_table / sizeof coff_section_alignment_table[0]; |
|
/* Initialize a section structure with information peculiar to this |
particular implementation of COFF. */ |
|
static bfd_boolean |
coff_new_section_hook (bfd * abfd, asection * section) |
{ |
combined_entry_type *native; |
bfd_size_type amt; |
unsigned char sclass = C_STAT; |
|
section->alignment_power = COFF_DEFAULT_SECTION_ALIGNMENT_POWER; |
|
#ifdef RS6000COFF_C |
if (bfd_xcoff_text_align_power (abfd) != 0 |
&& strcmp (bfd_get_section_name (abfd, section), ".text") == 0) |
section->alignment_power = bfd_xcoff_text_align_power (abfd); |
else if (bfd_xcoff_data_align_power (abfd) != 0 |
&& strcmp (bfd_get_section_name (abfd, section), ".data") == 0) |
section->alignment_power = bfd_xcoff_data_align_power (abfd); |
else |
{ |
int i; |
|
for (i = 0; i < XCOFF_DWSECT_NBR_NAMES; i++) |
if (strcmp (bfd_get_section_name (abfd, section), |
xcoff_dwsect_names[i].name) == 0) |
{ |
section->alignment_power = 0; |
sclass = C_DWARF; |
break; |
} |
} |
#endif |
|
/* Set up the section symbol. */ |
if (!_bfd_generic_new_section_hook (abfd, section)) |
return FALSE; |
|
/* Allocate aux records for section symbols, to store size and |
related info. |
|
@@ The 10 is a guess at a plausible maximum number of aux entries |
(but shouldn't be a constant). */ |
amt = sizeof (combined_entry_type) * 10; |
native = (combined_entry_type *) bfd_zalloc (abfd, amt); |
if (native == NULL) |
return FALSE; |
|
/* We don't need to set up n_name, n_value, or n_scnum in the native |
symbol information, since they'll be overridden by the BFD symbol |
anyhow. However, we do need to set the type and storage class, |
in case this symbol winds up getting written out. The value 0 |
for n_numaux is already correct. */ |
|
native->u.syment.n_type = T_NULL; |
native->u.syment.n_sclass = sclass; |
|
coffsymbol (section->symbol)->native = native; |
|
coff_set_custom_section_alignment (abfd, section, |
coff_section_alignment_table, |
coff_section_alignment_table_size); |
|
return TRUE; |
} |
|
#ifdef COFF_ALIGN_IN_SECTION_HEADER |
|
/* Set the alignment of a BFD section. */ |
|
static void |
coff_set_alignment_hook (bfd * abfd ATTRIBUTE_UNUSED, |
asection * section, |
void * scnhdr) |
{ |
struct internal_scnhdr *hdr = (struct internal_scnhdr *) scnhdr; |
unsigned int i; |
|
#ifdef I960 |
/* Extract ALIGN from 2**ALIGN stored in section header. */ |
for (i = 0; i < 32; i++) |
if ((1 << i) >= hdr->s_align) |
break; |
#endif |
#ifdef TIC80COFF |
/* TI tools puts the alignment power in bits 8-11. */ |
i = (hdr->s_flags >> 8) & 0xF ; |
#endif |
#ifdef COFF_DECODE_ALIGNMENT |
i = COFF_DECODE_ALIGNMENT(hdr->s_flags); |
#endif |
section->alignment_power = i; |
|
#ifdef coff_set_section_load_page |
coff_set_section_load_page (section, hdr->s_page); |
#endif |
} |
|
#else /* ! COFF_ALIGN_IN_SECTION_HEADER */ |
#ifdef COFF_WITH_PE |
|
static void |
coff_set_alignment_hook (bfd * abfd ATTRIBUTE_UNUSED, |
asection * section, |
void * scnhdr) |
{ |
struct internal_scnhdr *hdr = (struct internal_scnhdr *) scnhdr; |
bfd_size_type amt; |
unsigned int alignment_power_const |
= hdr->s_flags & IMAGE_SCN_ALIGN_POWER_BIT_MASK; |
|
switch (alignment_power_const) |
{ |
case IMAGE_SCN_ALIGN_8192BYTES: |
case IMAGE_SCN_ALIGN_4096BYTES: |
case IMAGE_SCN_ALIGN_2048BYTES: |
case IMAGE_SCN_ALIGN_1024BYTES: |
case IMAGE_SCN_ALIGN_512BYTES: |
case IMAGE_SCN_ALIGN_256BYTES: |
case IMAGE_SCN_ALIGN_128BYTES: |
case IMAGE_SCN_ALIGN_64BYTES: |
case IMAGE_SCN_ALIGN_32BYTES: |
case IMAGE_SCN_ALIGN_16BYTES: |
case IMAGE_SCN_ALIGN_8BYTES: |
case IMAGE_SCN_ALIGN_4BYTES: |
case IMAGE_SCN_ALIGN_2BYTES: |
case IMAGE_SCN_ALIGN_1BYTES: |
section->alignment_power |
= IMAGE_SCN_ALIGN_POWER_NUM (alignment_power_const); |
break; |
default: |
break; |
} |
|
/* In a PE image file, the s_paddr field holds the virtual size of a |
section, while the s_size field holds the raw size. We also keep |
the original section flag value, since not every bit can be |
mapped onto a generic BFD section bit. */ |
if (coff_section_data (abfd, section) == NULL) |
{ |
amt = sizeof (struct coff_section_tdata); |
section->used_by_bfd = bfd_zalloc (abfd, amt); |
if (section->used_by_bfd == NULL) |
/* FIXME: Return error. */ |
abort (); |
} |
|
if (pei_section_data (abfd, section) == NULL) |
{ |
amt = sizeof (struct pei_section_tdata); |
coff_section_data (abfd, section)->tdata = bfd_zalloc (abfd, amt); |
if (coff_section_data (abfd, section)->tdata == NULL) |
/* FIXME: Return error. */ |
abort (); |
} |
pei_section_data (abfd, section)->virt_size = hdr->s_paddr; |
pei_section_data (abfd, section)->pe_flags = hdr->s_flags; |
|
section->lma = hdr->s_vaddr; |
|
/* Check for extended relocs. */ |
if (hdr->s_flags & IMAGE_SCN_LNK_NRELOC_OVFL) |
{ |
struct external_reloc dst; |
struct internal_reloc n; |
file_ptr oldpos = bfd_tell (abfd); |
bfd_size_type relsz = bfd_coff_relsz (abfd); |
|
if (bfd_seek (abfd, (file_ptr) hdr->s_relptr, 0) != 0) |
return; |
if (bfd_bread (& dst, relsz, abfd) != relsz) |
return; |
|
coff_swap_reloc_in (abfd, &dst, &n); |
if (bfd_seek (abfd, oldpos, 0) != 0) |
return; |
section->reloc_count = hdr->s_nreloc = n.r_vaddr - 1; |
section->rel_filepos += relsz; |
} |
else if (hdr->s_nreloc == 0xffff) |
(*_bfd_error_handler) |
("%s: warning: claims to have 0xffff relocs, without overflow", |
bfd_get_filename (abfd)); |
} |
#undef ALIGN_SET |
#undef ELIFALIGN_SET |
|
#else /* ! COFF_WITH_PE */ |
#ifdef RS6000COFF_C |
|
/* We grossly abuse this function to handle XCOFF overflow headers. |
When we see one, we correct the reloc and line number counts in the |
real header, and remove the section we just created. */ |
|
static void |
coff_set_alignment_hook (bfd *abfd, asection *section, void * scnhdr) |
{ |
struct internal_scnhdr *hdr = (struct internal_scnhdr *) scnhdr; |
asection *real_sec; |
|
if ((hdr->s_flags & STYP_OVRFLO) == 0) |
return; |
|
real_sec = coff_section_from_bfd_index (abfd, (int) hdr->s_nreloc); |
if (real_sec == NULL) |
return; |
|
real_sec->reloc_count = hdr->s_paddr; |
real_sec->lineno_count = hdr->s_vaddr; |
|
if (!bfd_section_removed_from_list (abfd, section)) |
{ |
bfd_section_list_remove (abfd, section); |
--abfd->section_count; |
} |
} |
|
#else /* ! RS6000COFF_C */ |
|
#define coff_set_alignment_hook \ |
((void (*) (bfd *, asection *, void *)) bfd_void) |
|
#endif /* ! RS6000COFF_C */ |
#endif /* ! COFF_WITH_PE */ |
#endif /* ! COFF_ALIGN_IN_SECTION_HEADER */ |
|
#ifndef coff_mkobject |
|
static bfd_boolean |
coff_mkobject (bfd * abfd) |
{ |
coff_data_type *coff; |
bfd_size_type amt = sizeof (coff_data_type); |
|
abfd->tdata.coff_obj_data = bfd_zalloc (abfd, amt); |
if (abfd->tdata.coff_obj_data == NULL) |
return FALSE; |
coff = coff_data (abfd); |
coff->symbols = NULL; |
coff->conversion_table = NULL; |
coff->raw_syments = NULL; |
coff->relocbase = 0; |
coff->local_toc_sym_map = 0; |
|
/* make_abs_section(abfd);*/ |
|
return TRUE; |
} |
#endif |
|
/* Create the COFF backend specific information. */ |
|
#ifndef coff_mkobject_hook |
static void * |
coff_mkobject_hook (bfd * abfd, |
void * filehdr, |
void * aouthdr ATTRIBUTE_UNUSED) |
{ |
struct internal_filehdr *internal_f = (struct internal_filehdr *) filehdr; |
coff_data_type *coff; |
|
if (! coff_mkobject (abfd)) |
return NULL; |
|
coff = coff_data (abfd); |
|
coff->sym_filepos = internal_f->f_symptr; |
|
/* These members communicate important constants about the symbol |
table to GDB's symbol-reading code. These `constants' |
unfortunately vary among coff implementations... */ |
coff->local_n_btmask = N_BTMASK; |
coff->local_n_btshft = N_BTSHFT; |
coff->local_n_tmask = N_TMASK; |
coff->local_n_tshift = N_TSHIFT; |
coff->local_symesz = bfd_coff_symesz (abfd); |
coff->local_auxesz = bfd_coff_auxesz (abfd); |
coff->local_linesz = bfd_coff_linesz (abfd); |
|
coff->timestamp = internal_f->f_timdat; |
|
obj_raw_syment_count (abfd) = |
obj_conv_table_size (abfd) = |
internal_f->f_nsyms; |
|
#ifdef RS6000COFF_C |
if ((internal_f->f_flags & F_SHROBJ) != 0) |
abfd->flags |= DYNAMIC; |
if (aouthdr != NULL && internal_f->f_opthdr >= bfd_coff_aoutsz (abfd)) |
{ |
struct internal_aouthdr *internal_a = |
(struct internal_aouthdr *) aouthdr; |
struct xcoff_tdata *xcoff; |
|
xcoff = xcoff_data (abfd); |
# ifdef U803XTOCMAGIC |
xcoff->xcoff64 = internal_f->f_magic == U803XTOCMAGIC; |
# else |
xcoff->xcoff64 = 0; |
# endif |
xcoff->full_aouthdr = TRUE; |
xcoff->toc = internal_a->o_toc; |
xcoff->sntoc = internal_a->o_sntoc; |
xcoff->snentry = internal_a->o_snentry; |
bfd_xcoff_text_align_power (abfd) = internal_a->o_algntext; |
bfd_xcoff_data_align_power (abfd) = internal_a->o_algndata; |
xcoff->modtype = internal_a->o_modtype; |
xcoff->cputype = internal_a->o_cputype; |
xcoff->maxdata = internal_a->o_maxdata; |
xcoff->maxstack = internal_a->o_maxstack; |
} |
#endif |
|
#ifdef ARM |
/* Set the flags field from the COFF header read in. */ |
if (! _bfd_coff_arm_set_private_flags (abfd, internal_f->f_flags)) |
coff->flags = 0; |
#endif |
|
#ifdef COFF_WITH_PE |
/* FIXME: I'm not sure this is ever executed, since peicode.h |
defines coff_mkobject_hook. */ |
if ((internal_f->f_flags & IMAGE_FILE_DEBUG_STRIPPED) == 0) |
abfd->flags |= HAS_DEBUG; |
#endif |
|
if ((internal_f->f_flags & F_GO32STUB) != 0) |
coff->go32stub = (char *) bfd_alloc (abfd, (bfd_size_type) GO32_STUBSIZE); |
if (coff->go32stub != NULL) |
memcpy (coff->go32stub, internal_f->go32stub, GO32_STUBSIZE); |
|
return coff; |
} |
#endif |
|
/* Determine the machine architecture and type. FIXME: This is target |
dependent because the magic numbers are defined in the target |
dependent header files. But there is no particular need for this. |
If the magic numbers were moved to a separate file, this function |
would be target independent and would also be much more successful |
at linking together COFF files for different architectures. */ |
|
static bfd_boolean |
coff_set_arch_mach_hook (bfd *abfd, void * filehdr) |
{ |
unsigned long machine; |
enum bfd_architecture arch; |
struct internal_filehdr *internal_f = (struct internal_filehdr *) filehdr; |
|
/* Zero selects the default machine for an arch. */ |
machine = 0; |
switch (internal_f->f_magic) |
{ |
#ifdef OR32_MAGIC_BIG |
case OR32_MAGIC_BIG: |
case OR32_MAGIC_LITTLE: |
arch = bfd_arch_or32; |
break; |
#endif |
#ifdef PPCMAGIC |
case PPCMAGIC: |
arch = bfd_arch_powerpc; |
break; |
#endif |
#ifdef I386MAGIC |
case I386MAGIC: |
case I386PTXMAGIC: |
case I386AIXMAGIC: /* Danbury PS/2 AIX C Compiler. */ |
case LYNXCOFFMAGIC: /* Shadows the m68k Lynx number below, sigh. */ |
arch = bfd_arch_i386; |
break; |
#endif |
#ifdef AMD64MAGIC |
case AMD64MAGIC: |
arch = bfd_arch_i386; |
machine = bfd_mach_x86_64; |
break; |
#endif |
#ifdef IA64MAGIC |
case IA64MAGIC: |
arch = bfd_arch_ia64; |
break; |
#endif |
#ifdef ARMMAGIC |
case ARMMAGIC: |
case ARMPEMAGIC: |
case THUMBPEMAGIC: |
arch = bfd_arch_arm; |
machine = bfd_arm_get_mach_from_notes (abfd, ARM_NOTE_SECTION); |
if (machine == bfd_mach_arm_unknown) |
{ |
switch (internal_f->f_flags & F_ARM_ARCHITECTURE_MASK) |
{ |
case F_ARM_2: machine = bfd_mach_arm_2; break; |
case F_ARM_2a: machine = bfd_mach_arm_2a; break; |
case F_ARM_3: machine = bfd_mach_arm_3; break; |
default: |
case F_ARM_3M: machine = bfd_mach_arm_3M; break; |
case F_ARM_4: machine = bfd_mach_arm_4; break; |
case F_ARM_4T: machine = bfd_mach_arm_4T; break; |
/* The COFF header does not have enough bits available |
to cover all the different ARM architectures. So |
we interpret F_ARM_5, the highest flag value to mean |
"the highest ARM architecture known to BFD" which is |
currently the XScale. */ |
case F_ARM_5: machine = bfd_mach_arm_XScale; break; |
} |
} |
break; |
#endif |
#ifdef MC68MAGIC |
case MC68MAGIC: |
case M68MAGIC: |
#ifdef MC68KBCSMAGIC |
case MC68KBCSMAGIC: |
#endif |
#ifdef APOLLOM68KMAGIC |
case APOLLOM68KMAGIC: |
#endif |
#ifdef LYNXCOFFMAGIC |
case LYNXCOFFMAGIC: |
#endif |
arch = bfd_arch_m68k; |
machine = bfd_mach_m68020; |
break; |
#endif |
#ifdef MC88MAGIC |
case MC88MAGIC: |
case MC88DMAGIC: |
case MC88OMAGIC: |
arch = bfd_arch_m88k; |
machine = 88100; |
break; |
#endif |
#ifdef Z80MAGIC |
case Z80MAGIC: |
arch = bfd_arch_z80; |
switch (internal_f->f_flags & F_MACHMASK) |
{ |
case 0: |
case bfd_mach_z80strict << 12: |
case bfd_mach_z80 << 12: |
case bfd_mach_z80full << 12: |
case bfd_mach_r800 << 12: |
machine = ((unsigned)internal_f->f_flags & F_MACHMASK) >> 12; |
break; |
default: |
return FALSE; |
} |
break; |
#endif |
#ifdef Z8KMAGIC |
case Z8KMAGIC: |
arch = bfd_arch_z8k; |
switch (internal_f->f_flags & F_MACHMASK) |
{ |
case F_Z8001: |
machine = bfd_mach_z8001; |
break; |
case F_Z8002: |
machine = bfd_mach_z8002; |
break; |
default: |
return FALSE; |
} |
break; |
#endif |
#ifdef I860 |
case I860MAGIC: |
arch = bfd_arch_i860; |
break; |
#endif |
#ifdef I960 |
#ifdef I960ROMAGIC |
case I960ROMAGIC: |
case I960RWMAGIC: |
arch = bfd_arch_i960; |
switch (F_I960TYPE & internal_f->f_flags) |
{ |
default: |
case F_I960CORE: |
machine = bfd_mach_i960_core; |
break; |
case F_I960KB: |
machine = bfd_mach_i960_kb_sb; |
break; |
case F_I960MC: |
machine = bfd_mach_i960_mc; |
break; |
case F_I960XA: |
machine = bfd_mach_i960_xa; |
break; |
case F_I960CA: |
machine = bfd_mach_i960_ca; |
break; |
case F_I960KA: |
machine = bfd_mach_i960_ka_sa; |
break; |
case F_I960JX: |
machine = bfd_mach_i960_jx; |
break; |
case F_I960HX: |
machine = bfd_mach_i960_hx; |
break; |
} |
break; |
#endif |
#endif |
|
#ifdef RS6000COFF_C |
#ifdef XCOFF64 |
case U64_TOCMAGIC: |
case U803XTOCMAGIC: |
#else |
case U802ROMAGIC: |
case U802WRMAGIC: |
case U802TOCMAGIC: |
#endif |
{ |
int cputype; |
|
if (xcoff_data (abfd)->cputype != -1) |
cputype = xcoff_data (abfd)->cputype & 0xff; |
else |
{ |
/* We did not get a value from the a.out header. If the |
file has not been stripped, we may be able to get the |
architecture information from the first symbol, if it |
is a .file symbol. */ |
if (obj_raw_syment_count (abfd) == 0) |
cputype = 0; |
else |
{ |
bfd_byte *buf; |
struct internal_syment sym; |
bfd_size_type amt = bfd_coff_symesz (abfd); |
|
buf = bfd_malloc (amt); |
if (bfd_seek (abfd, obj_sym_filepos (abfd), SEEK_SET) != 0 |
|| bfd_bread (buf, amt, abfd) != amt) |
{ |
free (buf); |
return FALSE; |
} |
bfd_coff_swap_sym_in (abfd, buf, & sym); |
if (sym.n_sclass == C_FILE) |
cputype = sym.n_type & 0xff; |
else |
cputype = 0; |
free (buf); |
} |
} |
|
/* FIXME: We don't handle all cases here. */ |
switch (cputype) |
{ |
default: |
case 0: |
arch = bfd_xcoff_architecture (abfd); |
machine = bfd_xcoff_machine (abfd); |
break; |
|
case 1: |
arch = bfd_arch_powerpc; |
machine = bfd_mach_ppc_601; |
break; |
case 2: /* 64 bit PowerPC */ |
arch = bfd_arch_powerpc; |
machine = bfd_mach_ppc_620; |
break; |
case 3: |
arch = bfd_arch_powerpc; |
machine = bfd_mach_ppc; |
break; |
case 4: |
arch = bfd_arch_rs6000; |
machine = bfd_mach_rs6k; |
break; |
} |
} |
break; |
#endif |
|
#ifdef WE32KMAGIC |
case WE32KMAGIC: |
arch = bfd_arch_we32k; |
break; |
#endif |
|
#ifdef H8300MAGIC |
case H8300MAGIC: |
arch = bfd_arch_h8300; |
machine = bfd_mach_h8300; |
/* !! FIXME this probably isn't the right place for this. */ |
abfd->flags |= BFD_IS_RELAXABLE; |
break; |
#endif |
|
#ifdef H8300HMAGIC |
case H8300HMAGIC: |
arch = bfd_arch_h8300; |
machine = bfd_mach_h8300h; |
/* !! FIXME this probably isn't the right place for this. */ |
abfd->flags |= BFD_IS_RELAXABLE; |
break; |
#endif |
|
#ifdef H8300SMAGIC |
case H8300SMAGIC: |
arch = bfd_arch_h8300; |
machine = bfd_mach_h8300s; |
/* !! FIXME this probably isn't the right place for this. */ |
abfd->flags |= BFD_IS_RELAXABLE; |
break; |
#endif |
|
#ifdef H8300HNMAGIC |
case H8300HNMAGIC: |
arch = bfd_arch_h8300; |
machine = bfd_mach_h8300hn; |
/* !! FIXME this probably isn't the right place for this. */ |
abfd->flags |= BFD_IS_RELAXABLE; |
break; |
#endif |
|
#ifdef H8300SNMAGIC |
case H8300SNMAGIC: |
arch = bfd_arch_h8300; |
machine = bfd_mach_h8300sn; |
/* !! FIXME this probably isn't the right place for this. */ |
abfd->flags |= BFD_IS_RELAXABLE; |
break; |
#endif |
|
#ifdef SH_ARCH_MAGIC_BIG |
case SH_ARCH_MAGIC_BIG: |
case SH_ARCH_MAGIC_LITTLE: |
#ifdef COFF_WITH_PE |
case SH_ARCH_MAGIC_WINCE: |
#endif |
arch = bfd_arch_sh; |
break; |
#endif |
|
#ifdef MIPS_ARCH_MAGIC_WINCE |
case MIPS_ARCH_MAGIC_WINCE: |
arch = bfd_arch_mips; |
break; |
#endif |
|
#ifdef H8500MAGIC |
case H8500MAGIC: |
arch = bfd_arch_h8500; |
break; |
#endif |
|
#ifdef SPARCMAGIC |
case SPARCMAGIC: |
#ifdef LYNXCOFFMAGIC |
case LYNXCOFFMAGIC: |
#endif |
arch = bfd_arch_sparc; |
break; |
#endif |
|
#ifdef TIC30MAGIC |
case TIC30MAGIC: |
arch = bfd_arch_tic30; |
break; |
#endif |
|
#ifdef TICOFF0MAGIC |
#ifdef TICOFF_TARGET_ARCH |
/* This TI COFF section should be used by all new TI COFF v0 targets. */ |
case TICOFF0MAGIC: |
arch = TICOFF_TARGET_ARCH; |
machine = TICOFF_TARGET_MACHINE_GET (internal_f->f_flags); |
break; |
#endif |
#endif |
|
#ifdef TICOFF1MAGIC |
/* This TI COFF section should be used by all new TI COFF v1/2 targets. */ |
/* TI COFF1 and COFF2 use the target_id field to specify which arch. */ |
case TICOFF1MAGIC: |
case TICOFF2MAGIC: |
switch (internal_f->f_target_id) |
{ |
#ifdef TI_TARGET_ID |
case TI_TARGET_ID: |
arch = TICOFF_TARGET_ARCH; |
machine = TICOFF_TARGET_MACHINE_GET (internal_f->f_flags); |
break; |
#endif |
default: |
arch = bfd_arch_obscure; |
(*_bfd_error_handler) |
(_("Unrecognized TI COFF target id '0x%x'"), |
internal_f->f_target_id); |
break; |
} |
break; |
#endif |
|
#ifdef TIC80_ARCH_MAGIC |
case TIC80_ARCH_MAGIC: |
arch = bfd_arch_tic80; |
break; |
#endif |
|
#ifdef MCOREMAGIC |
case MCOREMAGIC: |
arch = bfd_arch_mcore; |
break; |
#endif |
|
#ifdef W65MAGIC |
case W65MAGIC: |
arch = bfd_arch_w65; |
break; |
#endif |
|
default: /* Unreadable input file type. */ |
arch = bfd_arch_obscure; |
break; |
} |
|
bfd_default_set_arch_mach (abfd, arch, machine); |
return TRUE; |
} |
|
#ifdef SYMNAME_IN_DEBUG |
|
static bfd_boolean |
symname_in_debug_hook (bfd * abfd ATTRIBUTE_UNUSED, struct internal_syment *sym) |
{ |
return SYMNAME_IN_DEBUG (sym) != 0; |
} |
|
#else |
|
#define symname_in_debug_hook \ |
(bfd_boolean (*) (bfd *, struct internal_syment *)) bfd_false |
|
#endif |
|
#ifdef RS6000COFF_C |
|
#ifdef XCOFF64 |
#define FORCE_SYMNAMES_IN_STRINGS |
#endif |
|
/* Handle the csect auxent of a C_EXT, C_AIX_WEAKEXT or C_HIDEXT symbol. */ |
|
static bfd_boolean |
coff_pointerize_aux_hook (bfd *abfd ATTRIBUTE_UNUSED, |
combined_entry_type *table_base, |
combined_entry_type *symbol, |
unsigned int indaux, |
combined_entry_type *aux) |
{ |
int n_sclass = symbol->u.syment.n_sclass; |
|
if (CSECT_SYM_P (n_sclass) |
&& indaux + 1 == symbol->u.syment.n_numaux) |
{ |
if (SMTYP_SMTYP (aux->u.auxent.x_csect.x_smtyp) == XTY_LD) |
{ |
aux->u.auxent.x_csect.x_scnlen.p = |
table_base + aux->u.auxent.x_csect.x_scnlen.l; |
aux->fix_scnlen = 1; |
} |
|
/* Return TRUE to indicate that the caller should not do any |
further work on this auxent. */ |
return TRUE; |
} |
|
/* Return FALSE to indicate that this auxent should be handled by |
the caller. */ |
return FALSE; |
} |
|
#else |
#ifdef I960 |
|
/* We don't want to pointerize bal entries. */ |
|
static bfd_boolean |
coff_pointerize_aux_hook (bfd *abfd ATTRIBUTE_UNUSED, |
combined_entry_type *table_base ATTRIBUTE_UNUSED, |
combined_entry_type *symbol, |
unsigned int indaux, |
combined_entry_type *aux ATTRIBUTE_UNUSED) |
{ |
/* Return TRUE if we don't want to pointerize this aux entry, which |
is the case for the lastfirst aux entry for a C_LEAFPROC symbol. */ |
return (indaux == 1 |
&& (symbol->u.syment.n_sclass == C_LEAFPROC |
|| symbol->u.syment.n_sclass == C_LEAFSTAT |
|| symbol->u.syment.n_sclass == C_LEAFEXT)); |
} |
|
#else /* ! I960 */ |
|
#define coff_pointerize_aux_hook 0 |
|
#endif /* ! I960 */ |
#endif /* ! RS6000COFF_C */ |
|
/* Print an aux entry. This returns TRUE if it has printed it. */ |
|
static bfd_boolean |
coff_print_aux (bfd *abfd ATTRIBUTE_UNUSED, |
FILE *file ATTRIBUTE_UNUSED, |
combined_entry_type *table_base ATTRIBUTE_UNUSED, |
combined_entry_type *symbol ATTRIBUTE_UNUSED, |
combined_entry_type *aux ATTRIBUTE_UNUSED, |
unsigned int indaux ATTRIBUTE_UNUSED) |
{ |
#ifdef RS6000COFF_C |
if (CSECT_SYM_P (symbol->u.syment.n_sclass) |
&& indaux + 1 == symbol->u.syment.n_numaux) |
{ |
/* This is a csect entry. */ |
fprintf (file, "AUX "); |
if (SMTYP_SMTYP (aux->u.auxent.x_csect.x_smtyp) != XTY_LD) |
{ |
BFD_ASSERT (! aux->fix_scnlen); |
#ifdef XCOFF64 |
fprintf (file, "val %5lld", |
(long long) aux->u.auxent.x_csect.x_scnlen.l); |
#else |
fprintf (file, "val %5ld", (long) aux->u.auxent.x_csect.x_scnlen.l); |
#endif |
} |
else |
{ |
fprintf (file, "indx "); |
if (! aux->fix_scnlen) |
#ifdef XCOFF64 |
fprintf (file, "%4lld", |
(long long) aux->u.auxent.x_csect.x_scnlen.l); |
#else |
fprintf (file, "%4ld", (long) aux->u.auxent.x_csect.x_scnlen.l); |
#endif |
else |
fprintf (file, "%4ld", |
(long) (aux->u.auxent.x_csect.x_scnlen.p - table_base)); |
} |
fprintf (file, |
" prmhsh %ld snhsh %u typ %d algn %d clss %u stb %ld snstb %u", |
aux->u.auxent.x_csect.x_parmhash, |
(unsigned int) aux->u.auxent.x_csect.x_snhash, |
SMTYP_SMTYP (aux->u.auxent.x_csect.x_smtyp), |
SMTYP_ALIGN (aux->u.auxent.x_csect.x_smtyp), |
(unsigned int) aux->u.auxent.x_csect.x_smclas, |
aux->u.auxent.x_csect.x_stab, |
(unsigned int) aux->u.auxent.x_csect.x_snstab); |
return TRUE; |
} |
#endif |
|
/* Return FALSE to indicate that no special action was taken. */ |
return FALSE; |
} |
|
/* |
SUBSUBSECTION |
Writing relocations |
|
To write relocations, the back end steps though the |
canonical relocation table and create an |
@code{internal_reloc}. The symbol index to use is removed from |
the @code{offset} field in the symbol table supplied. The |
address comes directly from the sum of the section base |
address and the relocation offset; the type is dug directly |
from the howto field. Then the @code{internal_reloc} is |
swapped into the shape of an @code{external_reloc} and written |
out to disk. |
|
*/ |
|
#ifdef TARG_AUX |
|
|
/* AUX's ld wants relocations to be sorted. */ |
static int |
compare_arelent_ptr (const void * x, const void * y) |
{ |
const arelent **a = (const arelent **) x; |
const arelent **b = (const arelent **) y; |
bfd_size_type aadr = (*a)->address; |
bfd_size_type badr = (*b)->address; |
|
return (aadr < badr ? -1 : badr < aadr ? 1 : 0); |
} |
|
#endif /* TARG_AUX */ |
|
static bfd_boolean |
coff_write_relocs (bfd * abfd, int first_undef) |
{ |
asection *s; |
|
for (s = abfd->sections; s != NULL; s = s->next) |
{ |
unsigned int i; |
struct external_reloc dst; |
arelent **p; |
|
#ifndef TARG_AUX |
p = s->orelocation; |
#else |
{ |
/* Sort relocations before we write them out. */ |
bfd_size_type amt; |
|
amt = s->reloc_count; |
amt *= sizeof (arelent *); |
p = bfd_malloc (amt); |
if (p == NULL && s->reloc_count > 0) |
return FALSE; |
memcpy (p, s->orelocation, (size_t) amt); |
qsort (p, s->reloc_count, sizeof (arelent *), compare_arelent_ptr); |
} |
#endif |
|
if (bfd_seek (abfd, s->rel_filepos, SEEK_SET) != 0) |
return FALSE; |
|
#ifdef COFF_WITH_PE |
if (obj_pe (abfd) && s->reloc_count >= 0xffff) |
{ |
/* Encode real count here as first reloc. */ |
struct internal_reloc n; |
|
memset (& n, 0, sizeof (n)); |
/* Add one to count *this* reloc (grr). */ |
n.r_vaddr = s->reloc_count + 1; |
coff_swap_reloc_out (abfd, &n, &dst); |
if (bfd_bwrite (& dst, (bfd_size_type) bfd_coff_relsz (abfd), |
abfd) != bfd_coff_relsz (abfd)) |
return FALSE; |
} |
#endif |
|
for (i = 0; i < s->reloc_count; i++) |
{ |
struct internal_reloc n; |
arelent *q = p[i]; |
|
memset (& n, 0, sizeof (n)); |
|
/* Now we've renumbered the symbols we know where the |
undefined symbols live in the table. Check the reloc |
entries for symbols who's output bfd isn't the right one. |
This is because the symbol was undefined (which means |
that all the pointers are never made to point to the same |
place). This is a bad thing,'cause the symbols attached |
to the output bfd are indexed, so that the relocation |
entries know which symbol index they point to. So we |
have to look up the output symbol here. */ |
|
if (q->sym_ptr_ptr[0] != NULL && q->sym_ptr_ptr[0]->the_bfd != abfd) |
{ |
int j; |
const char *sname = q->sym_ptr_ptr[0]->name; |
asymbol **outsyms = abfd->outsymbols; |
|
for (j = first_undef; outsyms[j]; j++) |
{ |
const char *intable = outsyms[j]->name; |
|
if (strcmp (intable, sname) == 0) |
{ |
/* Got a hit, so repoint the reloc. */ |
q->sym_ptr_ptr = outsyms + j; |
break; |
} |
} |
} |
|
n.r_vaddr = q->address + s->vma; |
|
#ifdef R_IHCONST |
/* The 29k const/consth reloc pair is a real kludge. The consth |
part doesn't have a symbol; it has an offset. So rebuilt |
that here. */ |
if (q->howto->type == R_IHCONST) |
n.r_symndx = q->addend; |
else |
#endif |
if (q->sym_ptr_ptr && q->sym_ptr_ptr[0] != NULL) |
{ |
#ifdef SECTION_RELATIVE_ABSOLUTE_SYMBOL_P |
if (SECTION_RELATIVE_ABSOLUTE_SYMBOL_P (q, s)) |
#else |
if ((*q->sym_ptr_ptr)->section == bfd_abs_section_ptr |
&& ((*q->sym_ptr_ptr)->flags & BSF_SECTION_SYM) != 0) |
#endif |
/* This is a relocation relative to the absolute symbol. */ |
n.r_symndx = -1; |
else |
{ |
n.r_symndx = get_index ((*(q->sym_ptr_ptr))); |
/* Check to see if the symbol reloc points to a symbol |
we don't have in our symbol table. */ |
if (n.r_symndx > obj_conv_table_size (abfd)) |
{ |
bfd_set_error (bfd_error_bad_value); |
_bfd_error_handler (_("%B: reloc against a non-existant symbol index: %ld"), |
abfd, n.r_symndx); |
return FALSE; |
} |
} |
} |
|
#ifdef SWAP_OUT_RELOC_OFFSET |
n.r_offset = q->addend; |
#endif |
|
#ifdef SELECT_RELOC |
/* Work out reloc type from what is required. */ |
SELECT_RELOC (n, q->howto); |
#else |
n.r_type = q->howto->type; |
#endif |
coff_swap_reloc_out (abfd, &n, &dst); |
|
if (bfd_bwrite (& dst, (bfd_size_type) bfd_coff_relsz (abfd), |
abfd) != bfd_coff_relsz (abfd)) |
return FALSE; |
} |
|
#ifdef TARG_AUX |
if (p != NULL) |
free (p); |
#endif |
} |
|
return TRUE; |
} |
|
/* Set flags and magic number of a coff file from architecture and machine |
type. Result is TRUE if we can represent the arch&type, FALSE if not. */ |
|
static bfd_boolean |
coff_set_flags (bfd * abfd, |
unsigned int *magicp ATTRIBUTE_UNUSED, |
unsigned short *flagsp ATTRIBUTE_UNUSED) |
{ |
switch (bfd_get_arch (abfd)) |
{ |
#ifdef Z80MAGIC |
case bfd_arch_z80: |
*magicp = Z80MAGIC; |
switch (bfd_get_mach (abfd)) |
{ |
case 0: |
case bfd_mach_z80strict: |
case bfd_mach_z80: |
case bfd_mach_z80full: |
case bfd_mach_r800: |
*flagsp = bfd_get_mach (abfd) << 12; |
break; |
default: |
return FALSE; |
} |
return TRUE; |
#endif |
|
#ifdef Z8KMAGIC |
case bfd_arch_z8k: |
*magicp = Z8KMAGIC; |
|
switch (bfd_get_mach (abfd)) |
{ |
case bfd_mach_z8001: *flagsp = F_Z8001; break; |
case bfd_mach_z8002: *flagsp = F_Z8002; break; |
default: return FALSE; |
} |
return TRUE; |
#endif |
|
#ifdef I960ROMAGIC |
case bfd_arch_i960: |
|
{ |
unsigned flags; |
|
*magicp = I960ROMAGIC; |
|
switch (bfd_get_mach (abfd)) |
{ |
case bfd_mach_i960_core: flags = F_I960CORE; break; |
case bfd_mach_i960_kb_sb: flags = F_I960KB; break; |
case bfd_mach_i960_mc: flags = F_I960MC; break; |
case bfd_mach_i960_xa: flags = F_I960XA; break; |
case bfd_mach_i960_ca: flags = F_I960CA; break; |
case bfd_mach_i960_ka_sa: flags = F_I960KA; break; |
case bfd_mach_i960_jx: flags = F_I960JX; break; |
case bfd_mach_i960_hx: flags = F_I960HX; break; |
default: return FALSE; |
} |
*flagsp = flags; |
return TRUE; |
} |
break; |
#endif |
|
#ifdef TIC30MAGIC |
case bfd_arch_tic30: |
*magicp = TIC30MAGIC; |
return TRUE; |
#endif |
|
#ifdef TICOFF_DEFAULT_MAGIC |
case TICOFF_TARGET_ARCH: |
/* If there's no indication of which version we want, use the default. */ |
if (!abfd->xvec ) |
*magicp = TICOFF_DEFAULT_MAGIC; |
else |
{ |
/* We may want to output in a different COFF version. */ |
switch (abfd->xvec->name[4]) |
{ |
case '0': |
*magicp = TICOFF0MAGIC; |
break; |
case '1': |
*magicp = TICOFF1MAGIC; |
break; |
case '2': |
*magicp = TICOFF2MAGIC; |
break; |
default: |
return FALSE; |
} |
} |
TICOFF_TARGET_MACHINE_SET (flagsp, bfd_get_mach (abfd)); |
return TRUE; |
#endif |
|
#ifdef TIC80_ARCH_MAGIC |
case bfd_arch_tic80: |
*magicp = TIC80_ARCH_MAGIC; |
return TRUE; |
#endif |
|
#ifdef ARMMAGIC |
case bfd_arch_arm: |
#ifdef ARM_WINCE |
* magicp = ARMPEMAGIC; |
#else |
* magicp = ARMMAGIC; |
#endif |
* flagsp = 0; |
if (APCS_SET (abfd)) |
{ |
if (APCS_26_FLAG (abfd)) |
* flagsp |= F_APCS26; |
|
if (APCS_FLOAT_FLAG (abfd)) |
* flagsp |= F_APCS_FLOAT; |
|
if (PIC_FLAG (abfd)) |
* flagsp |= F_PIC; |
} |
if (INTERWORK_SET (abfd) && INTERWORK_FLAG (abfd)) |
* flagsp |= F_INTERWORK; |
switch (bfd_get_mach (abfd)) |
{ |
case bfd_mach_arm_2: * flagsp |= F_ARM_2; break; |
case bfd_mach_arm_2a: * flagsp |= F_ARM_2a; break; |
case bfd_mach_arm_3: * flagsp |= F_ARM_3; break; |
case bfd_mach_arm_3M: * flagsp |= F_ARM_3M; break; |
case bfd_mach_arm_4: * flagsp |= F_ARM_4; break; |
case bfd_mach_arm_4T: * flagsp |= F_ARM_4T; break; |
case bfd_mach_arm_5: * flagsp |= F_ARM_5; break; |
/* FIXME: we do not have F_ARM vaues greater than F_ARM_5. |
See also the comment in coff_set_arch_mach_hook(). */ |
case bfd_mach_arm_5T: * flagsp |= F_ARM_5; break; |
case bfd_mach_arm_5TE: * flagsp |= F_ARM_5; break; |
case bfd_mach_arm_XScale: * flagsp |= F_ARM_5; break; |
} |
return TRUE; |
#endif |
|
#ifdef PPCMAGIC |
case bfd_arch_powerpc: |
*magicp = PPCMAGIC; |
return TRUE; |
#endif |
|
#if defined(I386MAGIC) || defined(AMD64MAGIC) |
case bfd_arch_i386: |
#if defined(I386MAGIC) |
*magicp = I386MAGIC; |
#endif |
#if defined LYNXOS |
/* Just overwrite the usual value if we're doing Lynx. */ |
*magicp = LYNXCOFFMAGIC; |
#endif |
#if defined AMD64MAGIC |
*magicp = AMD64MAGIC; |
#endif |
return TRUE; |
#endif |
|
#ifdef I860MAGIC |
case bfd_arch_i860: |
*magicp = I860MAGIC; |
return TRUE; |
#endif |
|
#ifdef IA64MAGIC |
case bfd_arch_ia64: |
*magicp = IA64MAGIC; |
return TRUE; |
#endif |
|
#ifdef MC68MAGIC |
case bfd_arch_m68k: |
#ifdef APOLLOM68KMAGIC |
*magicp = APOLLO_COFF_VERSION_NUMBER; |
#else |
/* NAMES_HAVE_UNDERSCORE may be defined by coff-u68k.c. */ |
#ifdef NAMES_HAVE_UNDERSCORE |
*magicp = MC68KBCSMAGIC; |
#else |
*magicp = MC68MAGIC; |
#endif |
#endif |
#ifdef LYNXOS |
/* Just overwrite the usual value if we're doing Lynx. */ |
*magicp = LYNXCOFFMAGIC; |
#endif |
return TRUE; |
#endif |
|
#ifdef MC88MAGIC |
case bfd_arch_m88k: |
*magicp = MC88OMAGIC; |
return TRUE; |
#endif |
|
#ifdef H8300MAGIC |
case bfd_arch_h8300: |
switch (bfd_get_mach (abfd)) |
{ |
case bfd_mach_h8300: *magicp = H8300MAGIC; return TRUE; |
case bfd_mach_h8300h: *magicp = H8300HMAGIC; return TRUE; |
case bfd_mach_h8300s: *magicp = H8300SMAGIC; return TRUE; |
case bfd_mach_h8300hn: *magicp = H8300HNMAGIC; return TRUE; |
case bfd_mach_h8300sn: *magicp = H8300SNMAGIC; return TRUE; |
default: break; |
} |
break; |
#endif |
|
#ifdef SH_ARCH_MAGIC_BIG |
case bfd_arch_sh: |
#ifdef COFF_IMAGE_WITH_PE |
*magicp = SH_ARCH_MAGIC_WINCE; |
#else |
if (bfd_big_endian (abfd)) |
*magicp = SH_ARCH_MAGIC_BIG; |
else |
*magicp = SH_ARCH_MAGIC_LITTLE; |
#endif |
return TRUE; |
#endif |
|
#ifdef MIPS_ARCH_MAGIC_WINCE |
case bfd_arch_mips: |
*magicp = MIPS_ARCH_MAGIC_WINCE; |
return TRUE; |
#endif |
|
#ifdef SPARCMAGIC |
case bfd_arch_sparc: |
*magicp = SPARCMAGIC; |
#ifdef LYNXOS |
/* Just overwrite the usual value if we're doing Lynx. */ |
*magicp = LYNXCOFFMAGIC; |
#endif |
return TRUE; |
#endif |
|
#ifdef H8500MAGIC |
case bfd_arch_h8500: |
*magicp = H8500MAGIC; |
return TRUE; |
break; |
#endif |
|
#ifdef WE32KMAGIC |
case bfd_arch_we32k: |
*magicp = WE32KMAGIC; |
return TRUE; |
#endif |
|
#ifdef RS6000COFF_C |
case bfd_arch_rs6000: |
#ifndef PPCMAGIC |
case bfd_arch_powerpc: |
#endif |
BFD_ASSERT (bfd_get_flavour (abfd) == bfd_target_xcoff_flavour); |
*magicp = bfd_xcoff_magic_number (abfd); |
return TRUE; |
#endif |
|
#ifdef MCOREMAGIC |
case bfd_arch_mcore: |
* magicp = MCOREMAGIC; |
return TRUE; |
#endif |
|
#ifdef W65MAGIC |
case bfd_arch_w65: |
*magicp = W65MAGIC; |
return TRUE; |
#endif |
|
#ifdef OR32_MAGIC_BIG |
case bfd_arch_or32: |
if (bfd_big_endian (abfd)) |
* magicp = OR32_MAGIC_BIG; |
else |
* magicp = OR32_MAGIC_LITTLE; |
return TRUE; |
#endif |
|
default: /* Unknown architecture. */ |
/* Fall through to "return FALSE" below, to avoid |
"statement never reached" errors on the one below. */ |
break; |
} |
|
return FALSE; |
} |
|
static bfd_boolean |
coff_set_arch_mach (bfd * abfd, |
enum bfd_architecture arch, |
unsigned long machine) |
{ |
unsigned dummy1; |
unsigned short dummy2; |
|
if (! bfd_default_set_arch_mach (abfd, arch, machine)) |
return FALSE; |
|
if (arch != bfd_arch_unknown |
&& ! coff_set_flags (abfd, &dummy1, &dummy2)) |
return FALSE; /* We can't represent this type. */ |
|
return TRUE; /* We're easy... */ |
} |
|
#ifdef COFF_IMAGE_WITH_PE |
|
/* This is used to sort sections by VMA, as required by PE image |
files. */ |
|
static int |
sort_by_secaddr (const void * arg1, const void * arg2) |
{ |
const asection *a = *(const asection **) arg1; |
const asection *b = *(const asection **) arg2; |
|
if (a->vma < b->vma) |
return -1; |
else if (a->vma > b->vma) |
return 1; |
|
return 0; |
} |
|
#endif /* COFF_IMAGE_WITH_PE */ |
|
/* Calculate the file position for each section. */ |
|
#ifndef I960 |
#define ALIGN_SECTIONS_IN_FILE |
#endif |
#if defined(TIC80COFF) || defined(TICOFF) |
#undef ALIGN_SECTIONS_IN_FILE |
#endif |
|
static bfd_boolean |
coff_compute_section_file_positions (bfd * abfd) |
{ |
asection *current; |
file_ptr sofar = bfd_coff_filhsz (abfd); |
bfd_boolean align_adjust; |
int target_index; |
#ifdef ALIGN_SECTIONS_IN_FILE |
asection *previous = NULL; |
file_ptr old_sofar; |
#endif |
|
#ifdef COFF_IMAGE_WITH_PE |
int page_size; |
|
if (coff_data (abfd)->link_info) |
{ |
page_size = pe_data (abfd)->pe_opthdr.FileAlignment; |
|
/* If no file alignment has been set, default to one. |
This repairs 'ld -r' for arm-wince-pe target. */ |
if (page_size == 0) |
page_size = 1; |
} |
else |
page_size = PE_DEF_FILE_ALIGNMENT; |
#else |
#ifdef COFF_PAGE_SIZE |
int page_size = COFF_PAGE_SIZE; |
#endif |
#endif |
|
#ifdef RS6000COFF_C |
/* On XCOFF, if we have symbols, set up the .debug section. */ |
if (bfd_get_symcount (abfd) > 0) |
{ |
bfd_size_type sz; |
bfd_size_type i, symcount; |
asymbol **symp; |
|
sz = 0; |
symcount = bfd_get_symcount (abfd); |
for (symp = abfd->outsymbols, i = 0; i < symcount; symp++, i++) |
{ |
coff_symbol_type *cf; |
|
cf = coff_symbol_from (abfd, *symp); |
if (cf != NULL |
&& cf->native != NULL |
&& SYMNAME_IN_DEBUG (&cf->native->u.syment)) |
{ |
size_t len; |
|
len = strlen (bfd_asymbol_name (*symp)); |
if (len > SYMNMLEN || bfd_coff_force_symnames_in_strings (abfd)) |
sz += len + 1 + bfd_coff_debug_string_prefix_length (abfd); |
} |
} |
if (sz > 0) |
{ |
asection *dsec; |
|
dsec = bfd_make_section_old_way (abfd, DOT_DEBUG); |
if (dsec == NULL) |
abort (); |
dsec->size = sz; |
dsec->flags |= SEC_HAS_CONTENTS; |
} |
} |
#endif |
|
if (bfd_get_start_address (abfd)) |
/* A start address may have been added to the original file. In this |
case it will need an optional header to record it. */ |
abfd->flags |= EXEC_P; |
|
if (abfd->flags & EXEC_P) |
sofar += bfd_coff_aoutsz (abfd); |
#ifdef RS6000COFF_C |
else if (xcoff_data (abfd)->full_aouthdr) |
sofar += bfd_coff_aoutsz (abfd); |
else |
sofar += SMALL_AOUTSZ; |
#endif |
|
sofar += abfd->section_count * bfd_coff_scnhsz (abfd); |
|
#ifdef RS6000COFF_C |
/* XCOFF handles overflows in the reloc and line number count fields |
by allocating a new section header to hold the correct counts. */ |
for (current = abfd->sections; current != NULL; current = current->next) |
if (current->reloc_count >= 0xffff || current->lineno_count >= 0xffff) |
sofar += bfd_coff_scnhsz (abfd); |
#endif |
|
#ifdef COFF_IMAGE_WITH_PE |
{ |
/* PE requires the sections to be in memory order when listed in |
the section headers. It also does not like empty loadable |
sections. The sections apparently do not have to be in the |
right order in the image file itself, but we do need to get the |
target_index values right. */ |
|
unsigned int count; |
asection **section_list; |
unsigned int i; |
bfd_size_type amt; |
|
#ifdef COFF_PAGE_SIZE |
/* Clear D_PAGED if section alignment is smaller than |
COFF_PAGE_SIZE. */ |
if (pe_data (abfd)->pe_opthdr.SectionAlignment < COFF_PAGE_SIZE) |
abfd->flags &= ~D_PAGED; |
#endif |
|
count = 0; |
for (current = abfd->sections; current != NULL; current = current->next) |
++count; |
|
/* We allocate an extra cell to simplify the final loop. */ |
amt = sizeof (struct asection *) * (count + 1); |
section_list = (asection **) bfd_malloc (amt); |
if (section_list == NULL) |
return FALSE; |
|
i = 0; |
for (current = abfd->sections; current != NULL; current = current->next) |
{ |
section_list[i] = current; |
++i; |
} |
section_list[i] = NULL; |
|
qsort (section_list, count, sizeof (asection *), sort_by_secaddr); |
|
/* Rethread the linked list into sorted order; at the same time, |
assign target_index values. */ |
target_index = 1; |
abfd->sections = NULL; |
abfd->section_last = NULL; |
for (i = 0; i < count; i++) |
{ |
current = section_list[i]; |
bfd_section_list_append (abfd, current); |
|
/* Later, if the section has zero size, we'll be throwing it |
away, so we don't want to number it now. Note that having |
a zero size and having real contents are different |
concepts: .bss has no contents, but (usually) non-zero |
size. */ |
if (current->size == 0) |
{ |
/* Discard. However, it still might have (valid) symbols |
in it, so arbitrarily set it to section 1 (indexing is |
1-based here; usually .text). __end__ and other |
contents of .endsection really have this happen. |
FIXME: This seems somewhat dubious. */ |
current->target_index = 1; |
} |
else |
current->target_index = target_index++; |
} |
|
free (section_list); |
} |
#else /* ! COFF_IMAGE_WITH_PE */ |
{ |
/* Set the target_index field. */ |
target_index = 1; |
for (current = abfd->sections; current != NULL; current = current->next) |
current->target_index = target_index++; |
} |
#endif /* ! COFF_IMAGE_WITH_PE */ |
|
if (target_index >= 32768) |
{ |
bfd_set_error (bfd_error_file_too_big); |
(*_bfd_error_handler) |
(_("%B: too many sections (%d)"), abfd, target_index); |
return FALSE; |
} |
|
align_adjust = FALSE; |
for (current = abfd->sections; |
current != NULL; |
current = current->next) |
{ |
#ifdef COFF_IMAGE_WITH_PE |
/* With PE we have to pad each section to be a multiple of its |
page size too, and remember both sizes. */ |
if (coff_section_data (abfd, current) == NULL) |
{ |
bfd_size_type amt = sizeof (struct coff_section_tdata); |
|
current->used_by_bfd = bfd_zalloc (abfd, amt); |
if (current->used_by_bfd == NULL) |
return FALSE; |
} |
if (pei_section_data (abfd, current) == NULL) |
{ |
bfd_size_type amt = sizeof (struct pei_section_tdata); |
|
coff_section_data (abfd, current)->tdata = bfd_zalloc (abfd, amt); |
if (coff_section_data (abfd, current)->tdata == NULL) |
return FALSE; |
} |
if (pei_section_data (abfd, current)->virt_size == 0) |
pei_section_data (abfd, current)->virt_size = current->size; |
#endif |
|
/* Only deal with sections which have contents. */ |
if (!(current->flags & SEC_HAS_CONTENTS)) |
continue; |
|
current->rawsize = current->size; |
|
#ifdef COFF_IMAGE_WITH_PE |
/* Make sure we skip empty sections in a PE image. */ |
if (current->size == 0) |
continue; |
#endif |
|
/* Align the sections in the file to the same boundary on |
which they are aligned in virtual memory. I960 doesn't |
do this (FIXME) so we can stay in sync with Intel. 960 |
doesn't yet page from files... */ |
#ifdef ALIGN_SECTIONS_IN_FILE |
if ((abfd->flags & EXEC_P) != 0) |
{ |
/* Make sure this section is aligned on the right boundary - by |
padding the previous section up if necessary. */ |
old_sofar = sofar; |
|
sofar = BFD_ALIGN (sofar, 1 << current->alignment_power); |
|
#ifdef RS6000COFF_C |
/* Make sure the file offset and the vma of .text/.data are at the |
same page offset, so that the file can be mmap'ed without being |
relocated. Failing that, AIX is able to load and execute the |
program, but it will be silently relocated (possible as |
executables are PIE). But the relocation is slightly costly and |
complexify the use of addr2line or gdb. So better to avoid it, |
like does the native linker. Usually gnu ld makes sure that |
the vma of .text is the file offset so this issue shouldn't |
appear unless you are stripping such an executable. |
|
AIX loader checks the text section alignment of (vma - filepos), |
and the native linker doesn't try to align the text sections. |
For example: |
|
0 .text 000054cc 10000128 10000128 00000128 2**5 |
CONTENTS, ALLOC, LOAD, CODE |
*/ |
|
if (!strcmp (current->name, _TEXT) |
|| !strcmp (current->name, _DATA)) |
{ |
bfd_vma align = 4096; |
bfd_vma sofar_off = sofar % align; |
bfd_vma vma_off = current->vma % align; |
|
if (vma_off > sofar_off) |
sofar += vma_off - sofar_off; |
else if (vma_off < sofar_off) |
sofar += align + vma_off - sofar_off; |
} |
#endif |
if (previous != NULL) |
previous->size += sofar - old_sofar; |
} |
|
#endif |
|
/* In demand paged files the low order bits of the file offset |
must match the low order bits of the virtual address. */ |
#ifdef COFF_PAGE_SIZE |
if ((abfd->flags & D_PAGED) != 0 |
&& (current->flags & SEC_ALLOC) != 0) |
sofar += (current->vma - (bfd_vma) sofar) % page_size; |
#endif |
current->filepos = sofar; |
|
#ifdef COFF_IMAGE_WITH_PE |
/* Set the padded size. */ |
current->size = (current->size + page_size - 1) & -page_size; |
#endif |
|
sofar += current->size; |
|
#ifdef ALIGN_SECTIONS_IN_FILE |
/* Make sure that this section is of the right size too. */ |
if ((abfd->flags & EXEC_P) == 0) |
{ |
bfd_size_type old_size; |
|
old_size = current->size; |
current->size = BFD_ALIGN (current->size, |
1 << current->alignment_power); |
align_adjust = current->size != old_size; |
sofar += current->size - old_size; |
} |
else |
{ |
old_sofar = sofar; |
sofar = BFD_ALIGN (sofar, 1 << current->alignment_power); |
align_adjust = sofar != old_sofar; |
current->size += sofar - old_sofar; |
} |
#endif |
|
#ifdef COFF_IMAGE_WITH_PE |
/* For PE we need to make sure we pad out to the aligned |
size, in case the caller only writes out data to the |
unaligned size. */ |
if (pei_section_data (abfd, current)->virt_size < current->size) |
align_adjust = TRUE; |
#endif |
|
#ifdef _LIB |
/* Force .lib sections to start at zero. The vma is then |
incremented in coff_set_section_contents. This is right for |
SVR3.2. */ |
if (strcmp (current->name, _LIB) == 0) |
(void) bfd_set_section_vma (abfd, current, 0); |
#endif |
|
#ifdef ALIGN_SECTIONS_IN_FILE |
previous = current; |
#endif |
} |
|
/* It is now safe to write to the output file. If we needed an |
alignment adjustment for the last section, then make sure that |
there is a byte at offset sofar. If there are no symbols and no |
relocs, then nothing follows the last section. If we don't force |
the last byte out, then the file may appear to be truncated. */ |
if (align_adjust) |
{ |
bfd_byte b; |
|
b = 0; |
if (bfd_seek (abfd, sofar - 1, SEEK_SET) != 0 |
|| bfd_bwrite (&b, (bfd_size_type) 1, abfd) != 1) |
return FALSE; |
} |
|
/* Make sure the relocations are aligned. We don't need to make |
sure that this byte exists, because it will only matter if there |
really are relocs. */ |
sofar = BFD_ALIGN (sofar, 1 << COFF_DEFAULT_SECTION_ALIGNMENT_POWER); |
|
obj_relocbase (abfd) = sofar; |
abfd->output_has_begun = TRUE; |
|
return TRUE; |
} |
|
#ifdef COFF_IMAGE_WITH_PE |
|
static unsigned int pelength; |
static unsigned int peheader; |
|
static bfd_boolean |
coff_read_word (bfd *abfd, unsigned int *value) |
{ |
unsigned char b[2]; |
int status; |
|
status = bfd_bread (b, (bfd_size_type) 2, abfd); |
if (status < 1) |
{ |
*value = 0; |
return FALSE; |
} |
|
if (status == 1) |
*value = (unsigned int) b[0]; |
else |
*value = (unsigned int) (b[0] + (b[1] << 8)); |
|
pelength += (unsigned int) status; |
|
return TRUE; |
} |
|
static unsigned int |
coff_compute_checksum (bfd *abfd) |
{ |
bfd_boolean more_data; |
file_ptr filepos; |
unsigned int value; |
unsigned int total; |
|
total = 0; |
pelength = 0; |
filepos = (file_ptr) 0; |
|
do |
{ |
if (bfd_seek (abfd, filepos, SEEK_SET) != 0) |
return 0; |
|
more_data = coff_read_word (abfd, &value); |
total += value; |
total = 0xffff & (total + (total >> 0x10)); |
filepos += 2; |
} |
while (more_data); |
|
return (0xffff & (total + (total >> 0x10))); |
} |
|
static bfd_boolean |
coff_apply_checksum (bfd *abfd) |
{ |
unsigned int computed; |
unsigned int checksum = 0; |
|
if (bfd_seek (abfd, 0x3c, SEEK_SET) != 0) |
return FALSE; |
|
if (!coff_read_word (abfd, &peheader)) |
return FALSE; |
|
if (bfd_seek (abfd, peheader + 0x58, SEEK_SET) != 0) |
return FALSE; |
|
checksum = 0; |
bfd_bwrite (&checksum, (bfd_size_type) 4, abfd); |
|
if (bfd_seek (abfd, peheader, SEEK_SET) != 0) |
return FALSE; |
|
computed = coff_compute_checksum (abfd); |
|
checksum = computed + pelength; |
|
if (bfd_seek (abfd, peheader + 0x58, SEEK_SET) != 0) |
return FALSE; |
|
bfd_bwrite (&checksum, (bfd_size_type) 4, abfd); |
|
return TRUE; |
} |
|
#endif /* COFF_IMAGE_WITH_PE */ |
|
static bfd_boolean |
coff_write_object_contents (bfd * abfd) |
{ |
asection *current; |
bfd_boolean hasrelocs = FALSE; |
bfd_boolean haslinno = FALSE; |
#ifdef COFF_IMAGE_WITH_PE |
bfd_boolean hasdebug = FALSE; |
#endif |
file_ptr scn_base; |
file_ptr reloc_base; |
file_ptr lineno_base; |
file_ptr sym_base; |
unsigned long reloc_size = 0, reloc_count = 0; |
unsigned long lnno_size = 0; |
bfd_boolean long_section_names; |
asection *text_sec = NULL; |
asection *data_sec = NULL; |
asection *bss_sec = NULL; |
struct internal_filehdr internal_f; |
struct internal_aouthdr internal_a; |
#ifdef COFF_LONG_SECTION_NAMES |
size_t string_size = STRING_SIZE_SIZE; |
#endif |
|
bfd_set_error (bfd_error_system_call); |
|
/* Make a pass through the symbol table to count line number entries and |
put them into the correct asections. */ |
lnno_size = coff_count_linenumbers (abfd) * bfd_coff_linesz (abfd); |
|
if (! abfd->output_has_begun) |
{ |
if (! coff_compute_section_file_positions (abfd)) |
return FALSE; |
} |
|
reloc_base = obj_relocbase (abfd); |
|
/* Work out the size of the reloc and linno areas. */ |
|
for (current = abfd->sections; current != NULL; current = |
current->next) |
{ |
#ifdef COFF_WITH_PE |
/* We store the actual reloc count in the first reloc's addr. */ |
if (obj_pe (abfd) && current->reloc_count >= 0xffff) |
reloc_count ++; |
#endif |
reloc_count += current->reloc_count; |
} |
|
reloc_size = reloc_count * bfd_coff_relsz (abfd); |
|
lineno_base = reloc_base + reloc_size; |
sym_base = lineno_base + lnno_size; |
|
/* Indicate in each section->line_filepos its actual file address. */ |
for (current = abfd->sections; current != NULL; current = |
current->next) |
{ |
if (current->lineno_count) |
{ |
current->line_filepos = lineno_base; |
current->moving_line_filepos = lineno_base; |
lineno_base += current->lineno_count * bfd_coff_linesz (abfd); |
} |
else |
current->line_filepos = 0; |
|
if (current->reloc_count) |
{ |
current->rel_filepos = reloc_base; |
reloc_base += current->reloc_count * bfd_coff_relsz (abfd); |
#ifdef COFF_WITH_PE |
/* Extra reloc to hold real count. */ |
if (obj_pe (abfd) && current->reloc_count >= 0xffff) |
reloc_base += bfd_coff_relsz (abfd); |
#endif |
} |
else |
current->rel_filepos = 0; |
} |
|
/* Write section headers to the file. */ |
internal_f.f_nscns = 0; |
|
if ((abfd->flags & EXEC_P) != 0) |
scn_base = bfd_coff_filhsz (abfd) + bfd_coff_aoutsz (abfd); |
else |
{ |
scn_base = bfd_coff_filhsz (abfd); |
#ifdef RS6000COFF_C |
#ifndef XCOFF64 |
if (xcoff_data (abfd)->full_aouthdr) |
scn_base += bfd_coff_aoutsz (abfd); |
else |
scn_base += SMALL_AOUTSZ; |
#endif |
#endif |
} |
|
if (bfd_seek (abfd, scn_base, SEEK_SET) != 0) |
return FALSE; |
|
long_section_names = FALSE; |
for (current = abfd->sections; |
current != NULL; |
current = current->next) |
{ |
struct internal_scnhdr section; |
#ifdef COFF_IMAGE_WITH_PE |
bfd_boolean is_reloc_section = FALSE; |
|
if (strcmp (current->name, DOT_RELOC) == 0) |
{ |
is_reloc_section = TRUE; |
hasrelocs = TRUE; |
pe_data (abfd)->has_reloc_section = 1; |
} |
#endif |
|
internal_f.f_nscns++; |
|
strncpy (section.s_name, current->name, SCNNMLEN); |
|
#ifdef COFF_LONG_SECTION_NAMES |
/* Handle long section names as in PE. This must be compatible |
with the code in coff_write_symbols and _bfd_coff_final_link. */ |
if (bfd_coff_long_section_names (abfd)) |
{ |
size_t len; |
|
len = strlen (current->name); |
if (len > SCNNMLEN) |
{ |
/* The s_name field is defined to be NUL-padded but need not be |
NUL-terminated. We use a temporary buffer so that we can still |
sprintf all eight chars without splatting a terminating NUL |
over the first byte of the following member (s_paddr). */ |
char s_name_buf[SCNNMLEN + 1]; |
|
/* An inherent limitation of the /nnnnnnn notation used to indicate |
the offset of the long name in the string table is that we |
cannot address entries beyone the ten million byte boundary. */ |
if (string_size >= 10000000) |
{ |
bfd_set_error (bfd_error_file_too_big); |
(*_bfd_error_handler) |
(_("%B: section %s: string table overflow at offset %ld"), |
abfd, current->name, string_size); |
return FALSE; |
} |
|
/* snprintf not strictly necessary now we've verified the value |
has less than eight ASCII digits, but never mind. */ |
snprintf (s_name_buf, SCNNMLEN + 1, "/%lu", (unsigned long) string_size); |
/* Then strncpy takes care of any padding for us. */ |
strncpy (section.s_name, s_name_buf, SCNNMLEN); |
string_size += len + 1; |
long_section_names = TRUE; |
} |
} |
#endif |
|
#ifdef _LIB |
/* Always set s_vaddr of .lib to 0. This is right for SVR3.2 |
Ian Taylor <ian@cygnus.com>. */ |
if (strcmp (current->name, _LIB) == 0) |
section.s_vaddr = 0; |
else |
#endif |
section.s_vaddr = current->vma; |
section.s_paddr = current->lma; |
section.s_size = current->size; |
#ifdef coff_get_section_load_page |
section.s_page = coff_get_section_load_page (current); |
#else |
section.s_page = 0; |
#endif |
|
#ifdef COFF_WITH_PE |
section.s_paddr = 0; |
#endif |
#ifdef COFF_IMAGE_WITH_PE |
/* Reminder: s_paddr holds the virtual size of the section. */ |
if (coff_section_data (abfd, current) != NULL |
&& pei_section_data (abfd, current) != NULL) |
section.s_paddr = pei_section_data (abfd, current)->virt_size; |
else |
section.s_paddr = 0; |
#endif |
|
/* If this section has no size or is unloadable then the scnptr |
will be 0 too. */ |
if (current->size == 0 |
|| (current->flags & (SEC_LOAD | SEC_HAS_CONTENTS)) == 0) |
section.s_scnptr = 0; |
else |
section.s_scnptr = current->filepos; |
|
section.s_relptr = current->rel_filepos; |
section.s_lnnoptr = current->line_filepos; |
section.s_nreloc = current->reloc_count; |
section.s_nlnno = current->lineno_count; |
#ifndef COFF_IMAGE_WITH_PE |
/* In PEI, relocs come in the .reloc section. */ |
if (current->reloc_count != 0) |
hasrelocs = TRUE; |
#endif |
if (current->lineno_count != 0) |
haslinno = TRUE; |
#ifdef COFF_IMAGE_WITH_PE |
if ((current->flags & SEC_DEBUGGING) != 0 |
&& ! is_reloc_section) |
hasdebug = TRUE; |
#endif |
|
#ifdef RS6000COFF_C |
#ifndef XCOFF64 |
/* Indicate the use of an XCOFF overflow section header. */ |
if (current->reloc_count >= 0xffff || current->lineno_count >= 0xffff) |
{ |
section.s_nreloc = 0xffff; |
section.s_nlnno = 0xffff; |
} |
#endif |
#endif |
|
section.s_flags = sec_to_styp_flags (current->name, current->flags); |
|
if (!strcmp (current->name, _TEXT)) |
text_sec = current; |
else if (!strcmp (current->name, _DATA)) |
data_sec = current; |
else if (!strcmp (current->name, _BSS)) |
bss_sec = current; |
|
#ifdef I960 |
section.s_align = (current->alignment_power |
? 1 << current->alignment_power |
: 0); |
#endif |
#ifdef TIC80COFF |
/* TI COFF puts the alignment power in bits 8-11 of the flags. */ |
section.s_flags |= (current->alignment_power & 0xF) << 8; |
#endif |
#ifdef COFF_ENCODE_ALIGNMENT |
COFF_ENCODE_ALIGNMENT(section, current->alignment_power); |
#endif |
|
#ifdef COFF_IMAGE_WITH_PE |
/* Suppress output of the sections if they are null. ld |
includes the bss and data sections even if there is no size |
assigned to them. NT loader doesn't like it if these section |
headers are included if the sections themselves are not |
needed. See also coff_compute_section_file_positions. */ |
if (section.s_size == 0) |
internal_f.f_nscns--; |
else |
#endif |
{ |
SCNHDR buff; |
bfd_size_type amt = bfd_coff_scnhsz (abfd); |
|
if (coff_swap_scnhdr_out (abfd, §ion, &buff) == 0 |
|| bfd_bwrite (& buff, amt, abfd) != amt) |
return FALSE; |
} |
|
#ifdef COFF_WITH_PE |
/* PE stores COMDAT section information in the symbol table. If |
this section is supposed to have some COMDAT info, track down |
the symbol in the symbol table and modify it. */ |
if ((current->flags & SEC_LINK_ONCE) != 0) |
{ |
unsigned int i, count; |
asymbol **psym; |
coff_symbol_type *csym = NULL; |
asymbol **psymsec; |
|
psymsec = NULL; |
count = bfd_get_symcount (abfd); |
for (i = 0, psym = abfd->outsymbols; i < count; i++, psym++) |
{ |
if ((*psym)->section != current) |
continue; |
|
/* Remember the location of the first symbol in this |
section. */ |
if (psymsec == NULL) |
psymsec = psym; |
|
/* See if this is the section symbol. */ |
if (strcmp ((*psym)->name, current->name) == 0) |
{ |
csym = coff_symbol_from (abfd, *psym); |
if (csym == NULL |
|| csym->native == NULL |
|| csym->native->u.syment.n_numaux < 1 |
|| csym->native->u.syment.n_sclass != C_STAT |
|| csym->native->u.syment.n_type != T_NULL) |
continue; |
|
/* Here *PSYM is the section symbol for CURRENT. */ |
|
break; |
} |
} |
|
/* Did we find it? |
Note that we might not if we're converting the file from |
some other object file format. */ |
if (i < count) |
{ |
combined_entry_type *aux; |
|
/* We don't touch the x_checksum field. The |
x_associated field is not currently supported. */ |
|
aux = csym->native + 1; |
switch (current->flags & SEC_LINK_DUPLICATES) |
{ |
case SEC_LINK_DUPLICATES_DISCARD: |
aux->u.auxent.x_scn.x_comdat = IMAGE_COMDAT_SELECT_ANY; |
break; |
|
case SEC_LINK_DUPLICATES_ONE_ONLY: |
aux->u.auxent.x_scn.x_comdat = |
IMAGE_COMDAT_SELECT_NODUPLICATES; |
break; |
|
case SEC_LINK_DUPLICATES_SAME_SIZE: |
aux->u.auxent.x_scn.x_comdat = |
IMAGE_COMDAT_SELECT_SAME_SIZE; |
break; |
|
case SEC_LINK_DUPLICATES_SAME_CONTENTS: |
aux->u.auxent.x_scn.x_comdat = |
IMAGE_COMDAT_SELECT_EXACT_MATCH; |
break; |
} |
|
/* The COMDAT symbol must be the first symbol from this |
section in the symbol table. In order to make this |
work, we move the COMDAT symbol before the first |
symbol we found in the search above. It's OK to |
rearrange the symbol table at this point, because |
coff_renumber_symbols is going to rearrange it |
further and fix up all the aux entries. */ |
if (psym != psymsec) |
{ |
asymbol *hold; |
asymbol **pcopy; |
|
hold = *psym; |
for (pcopy = psym; pcopy > psymsec; pcopy--) |
pcopy[0] = pcopy[-1]; |
*psymsec = hold; |
} |
} |
} |
#endif /* COFF_WITH_PE */ |
} |
|
#ifdef RS6000COFF_C |
#ifndef XCOFF64 |
/* XCOFF handles overflows in the reloc and line number count fields |
by creating a new section header to hold the correct values. */ |
for (current = abfd->sections; current != NULL; current = current->next) |
{ |
if (current->reloc_count >= 0xffff || current->lineno_count >= 0xffff) |
{ |
struct internal_scnhdr scnhdr; |
SCNHDR buff; |
bfd_size_type amt; |
|
internal_f.f_nscns++; |
memcpy (scnhdr.s_name, ".ovrflo", 8); |
scnhdr.s_paddr = current->reloc_count; |
scnhdr.s_vaddr = current->lineno_count; |
scnhdr.s_size = 0; |
scnhdr.s_scnptr = 0; |
scnhdr.s_relptr = current->rel_filepos; |
scnhdr.s_lnnoptr = current->line_filepos; |
scnhdr.s_nreloc = current->target_index; |
scnhdr.s_nlnno = current->target_index; |
scnhdr.s_flags = STYP_OVRFLO; |
amt = bfd_coff_scnhsz (abfd); |
if (coff_swap_scnhdr_out (abfd, &scnhdr, &buff) == 0 |
|| bfd_bwrite (& buff, amt, abfd) != amt) |
return FALSE; |
} |
} |
#endif |
#endif |
|
/* OK, now set up the filehdr... */ |
|
/* Don't include the internal abs section in the section count */ |
|
/* We will NOT put a fucking timestamp in the header here. Every time you |
put it back, I will come in and take it out again. I'm sorry. This |
field does not belong here. We fill it with a 0 so it compares the |
same but is not a reasonable time. -- gnu@cygnus.com */ |
internal_f.f_timdat = 0; |
internal_f.f_flags = 0; |
|
if (abfd->flags & EXEC_P) |
internal_f.f_opthdr = bfd_coff_aoutsz (abfd); |
else |
{ |
internal_f.f_opthdr = 0; |
#ifdef RS6000COFF_C |
#ifndef XCOFF64 |
if (xcoff_data (abfd)->full_aouthdr) |
internal_f.f_opthdr = bfd_coff_aoutsz (abfd); |
else |
internal_f.f_opthdr = SMALL_AOUTSZ; |
#endif |
#endif |
} |
|
if (!hasrelocs) |
internal_f.f_flags |= F_RELFLG; |
if (!haslinno) |
internal_f.f_flags |= F_LNNO; |
if (abfd->flags & EXEC_P) |
internal_f.f_flags |= F_EXEC; |
#ifdef COFF_IMAGE_WITH_PE |
if (! hasdebug) |
internal_f.f_flags |= IMAGE_FILE_DEBUG_STRIPPED; |
if (pe_data (abfd)->real_flags & IMAGE_FILE_LARGE_ADDRESS_AWARE) |
internal_f.f_flags |= IMAGE_FILE_LARGE_ADDRESS_AWARE; |
#endif |
|
#ifndef COFF_WITH_pex64 |
#ifdef COFF_WITH_PE |
internal_f.f_flags |= IMAGE_FILE_32BIT_MACHINE; |
#else |
if (bfd_little_endian (abfd)) |
internal_f.f_flags |= F_AR32WR; |
else |
internal_f.f_flags |= F_AR32W; |
#endif |
#endif |
|
#ifdef TI_TARGET_ID |
/* Target id is used in TI COFF v1 and later; COFF0 won't use this field, |
but it doesn't hurt to set it internally. */ |
internal_f.f_target_id = TI_TARGET_ID; |
#endif |
#ifdef TIC80_TARGET_ID |
internal_f.f_target_id = TIC80_TARGET_ID; |
#endif |
|
/* FIXME, should do something about the other byte orders and |
architectures. */ |
|
#ifdef RS6000COFF_C |
if ((abfd->flags & DYNAMIC) != 0) |
internal_f.f_flags |= F_SHROBJ; |
if (bfd_get_section_by_name (abfd, _LOADER) != NULL) |
internal_f.f_flags |= F_DYNLOAD; |
#endif |
|
memset (&internal_a, 0, sizeof internal_a); |
|
/* Set up architecture-dependent stuff. */ |
{ |
unsigned int magic = 0; |
unsigned short flags = 0; |
|
coff_set_flags (abfd, &magic, &flags); |
internal_f.f_magic = magic; |
internal_f.f_flags |= flags; |
/* ...and the "opt"hdr... */ |
|
#ifdef TICOFF_AOUT_MAGIC |
internal_a.magic = TICOFF_AOUT_MAGIC; |
#define __A_MAGIC_SET__ |
#endif |
#ifdef TIC80COFF |
internal_a.magic = TIC80_ARCH_MAGIC; |
#define __A_MAGIC_SET__ |
#endif /* TIC80 */ |
#ifdef I860 |
/* FIXME: What are the a.out magic numbers for the i860? */ |
internal_a.magic = 0; |
#define __A_MAGIC_SET__ |
#endif /* I860 */ |
#ifdef I960 |
internal_a.magic = (magic == I960ROMAGIC ? NMAGIC : OMAGIC); |
#define __A_MAGIC_SET__ |
#endif /* I960 */ |
#if M88 |
#define __A_MAGIC_SET__ |
internal_a.magic = PAGEMAGICBCS; |
#endif /* M88 */ |
|
#if APOLLO_M68 |
#define __A_MAGIC_SET__ |
internal_a.magic = APOLLO_COFF_VERSION_NUMBER; |
#endif |
|
#if defined(M68) || defined(WE32K) || defined(M68K) |
#define __A_MAGIC_SET__ |
#if defined(LYNXOS) |
internal_a.magic = LYNXCOFFMAGIC; |
#else |
#if defined(TARG_AUX) |
internal_a.magic = (abfd->flags & D_PAGED ? PAGEMAGICPEXECPAGED : |
abfd->flags & WP_TEXT ? PAGEMAGICPEXECSWAPPED : |
PAGEMAGICEXECSWAPPED); |
#else |
#if defined (PAGEMAGICPEXECPAGED) |
internal_a.magic = PAGEMAGICPEXECPAGED; |
#endif |
#endif /* TARG_AUX */ |
#endif /* LYNXOS */ |
#endif /* M68 || WE32K || M68K */ |
|
#if defined(ARM) |
#define __A_MAGIC_SET__ |
internal_a.magic = ZMAGIC; |
#endif |
|
#if defined(PPC_PE) |
#define __A_MAGIC_SET__ |
internal_a.magic = IMAGE_NT_OPTIONAL_HDR_MAGIC; |
#endif |
|
#if defined MCORE_PE |
#define __A_MAGIC_SET__ |
internal_a.magic = IMAGE_NT_OPTIONAL_HDR_MAGIC; |
#endif |
|
#if defined(I386) |
#define __A_MAGIC_SET__ |
#if defined LYNXOS |
internal_a.magic = LYNXCOFFMAGIC; |
#elif defined AMD64 |
internal_a.magic = IMAGE_NT_OPTIONAL_HDR64_MAGIC; |
#else |
internal_a.magic = ZMAGIC; |
#endif |
#endif /* I386 */ |
|
#if defined(IA64) |
#define __A_MAGIC_SET__ |
internal_a.magic = PE32PMAGIC; |
#endif /* IA64 */ |
|
#if defined(SPARC) |
#define __A_MAGIC_SET__ |
#if defined(LYNXOS) |
internal_a.magic = LYNXCOFFMAGIC; |
#endif /* LYNXOS */ |
#endif /* SPARC */ |
|
#ifdef RS6000COFF_C |
#define __A_MAGIC_SET__ |
internal_a.magic = (abfd->flags & D_PAGED) ? RS6K_AOUTHDR_ZMAGIC : |
(abfd->flags & WP_TEXT) ? RS6K_AOUTHDR_NMAGIC : |
RS6K_AOUTHDR_OMAGIC; |
#endif |
|
#if defined(SH) && defined(COFF_WITH_PE) |
#define __A_MAGIC_SET__ |
internal_a.magic = SH_PE_MAGIC; |
#endif |
|
#if defined(MIPS) && defined(COFF_WITH_PE) |
#define __A_MAGIC_SET__ |
internal_a.magic = MIPS_PE_MAGIC; |
#endif |
|
#ifdef OR32 |
#define __A_MAGIC_SET__ |
internal_a.magic = NMAGIC; /* Assume separate i/d. */ |
#endif |
|
#ifndef __A_MAGIC_SET__ |
#include "Your aouthdr magic number is not being set!" |
#else |
#undef __A_MAGIC_SET__ |
#endif |
} |
|
/* FIXME: Does anybody ever set this to another value? */ |
internal_a.vstamp = 0; |
|
/* Now should write relocs, strings, syms. */ |
obj_sym_filepos (abfd) = sym_base; |
|
if (bfd_get_symcount (abfd) != 0) |
{ |
int firstundef; |
|
if (!coff_renumber_symbols (abfd, &firstundef)) |
return FALSE; |
coff_mangle_symbols (abfd); |
if (! coff_write_symbols (abfd)) |
return FALSE; |
if (! coff_write_linenumbers (abfd)) |
return FALSE; |
if (! coff_write_relocs (abfd, firstundef)) |
return FALSE; |
} |
#ifdef COFF_LONG_SECTION_NAMES |
else if (long_section_names && ! obj_coff_strings_written (abfd)) |
{ |
/* If we have long section names we have to write out the string |
table even if there are no symbols. */ |
if (! coff_write_symbols (abfd)) |
return FALSE; |
} |
#endif |
#ifdef COFF_IMAGE_WITH_PE |
#ifdef PPC_PE |
else if ((abfd->flags & EXEC_P) != 0) |
{ |
bfd_byte b; |
|
/* PowerPC PE appears to require that all executable files be |
rounded up to the page size. */ |
b = 0; |
if (bfd_seek (abfd, |
(file_ptr) BFD_ALIGN (sym_base, COFF_PAGE_SIZE) - 1, |
SEEK_SET) != 0 |
|| bfd_bwrite (&b, (bfd_size_type) 1, abfd) != 1) |
return FALSE; |
} |
#endif |
#endif |
|
/* If bfd_get_symcount (abfd) != 0, then we are not using the COFF |
backend linker, and obj_raw_syment_count is not valid until after |
coff_write_symbols is called. */ |
if (obj_raw_syment_count (abfd) != 0) |
{ |
internal_f.f_symptr = sym_base; |
#ifdef RS6000COFF_C |
/* AIX appears to require that F_RELFLG not be set if there are |
local symbols but no relocations. */ |
internal_f.f_flags &=~ F_RELFLG; |
#endif |
} |
else |
{ |
if (long_section_names) |
internal_f.f_symptr = sym_base; |
else |
internal_f.f_symptr = 0; |
internal_f.f_flags |= F_LSYMS; |
} |
|
if (text_sec) |
{ |
internal_a.tsize = text_sec->size; |
internal_a.text_start = internal_a.tsize ? text_sec->vma : 0; |
} |
if (data_sec) |
{ |
internal_a.dsize = data_sec->size; |
internal_a.data_start = internal_a.dsize ? data_sec->vma : 0; |
} |
if (bss_sec) |
{ |
internal_a.bsize = bss_sec->size; |
if (internal_a.bsize && bss_sec->vma < internal_a.data_start) |
internal_a.data_start = bss_sec->vma; |
} |
|
internal_a.entry = bfd_get_start_address (abfd); |
internal_f.f_nsyms = obj_raw_syment_count (abfd); |
|
#ifdef RS6000COFF_C |
if (xcoff_data (abfd)->full_aouthdr) |
{ |
bfd_vma toc; |
asection *loader_sec; |
|
internal_a.vstamp = 1; |
|
internal_a.o_snentry = xcoff_data (abfd)->snentry; |
if (internal_a.o_snentry == 0) |
internal_a.entry = (bfd_vma) -1; |
|
if (text_sec != NULL) |
{ |
internal_a.o_sntext = text_sec->target_index; |
internal_a.o_algntext = bfd_get_section_alignment (abfd, text_sec); |
} |
else |
{ |
internal_a.o_sntext = 0; |
internal_a.o_algntext = 0; |
} |
if (data_sec != NULL) |
{ |
internal_a.o_sndata = data_sec->target_index; |
internal_a.o_algndata = bfd_get_section_alignment (abfd, data_sec); |
} |
else |
{ |
internal_a.o_sndata = 0; |
internal_a.o_algndata = 0; |
} |
loader_sec = bfd_get_section_by_name (abfd, ".loader"); |
if (loader_sec != NULL) |
internal_a.o_snloader = loader_sec->target_index; |
else |
internal_a.o_snloader = 0; |
if (bss_sec != NULL) |
internal_a.o_snbss = bss_sec->target_index; |
else |
internal_a.o_snbss = 0; |
|
toc = xcoff_data (abfd)->toc; |
internal_a.o_toc = toc; |
internal_a.o_sntoc = xcoff_data (abfd)->sntoc; |
|
internal_a.o_modtype = xcoff_data (abfd)->modtype; |
if (xcoff_data (abfd)->cputype != -1) |
internal_a.o_cputype = xcoff_data (abfd)->cputype; |
else |
{ |
switch (bfd_get_arch (abfd)) |
{ |
case bfd_arch_rs6000: |
internal_a.o_cputype = 4; |
break; |
case bfd_arch_powerpc: |
if (bfd_get_mach (abfd) == bfd_mach_ppc) |
internal_a.o_cputype = 3; |
else |
internal_a.o_cputype = 1; |
break; |
default: |
abort (); |
} |
} |
internal_a.o_maxstack = xcoff_data (abfd)->maxstack; |
internal_a.o_maxdata = xcoff_data (abfd)->maxdata; |
} |
#endif |
|
/* Now write them. */ |
if (bfd_seek (abfd, (file_ptr) 0, SEEK_SET) != 0) |
return FALSE; |
|
{ |
char * buff; |
bfd_size_type amount = bfd_coff_filhsz (abfd); |
|
buff = (char *) bfd_malloc (amount); |
if (buff == NULL) |
return FALSE; |
|
bfd_coff_swap_filehdr_out (abfd, & internal_f, buff); |
amount = bfd_bwrite (buff, amount, abfd); |
|
free (buff); |
|
if (amount != bfd_coff_filhsz (abfd)) |
return FALSE; |
} |
|
if (abfd->flags & EXEC_P) |
{ |
/* Note that peicode.h fills in a PEAOUTHDR, not an AOUTHDR. |
include/coff/pe.h sets AOUTSZ == sizeof (PEAOUTHDR)). */ |
char * buff; |
bfd_size_type amount = bfd_coff_aoutsz (abfd); |
|
buff = (char *) bfd_malloc (amount); |
if (buff == NULL) |
return FALSE; |
|
coff_swap_aouthdr_out (abfd, & internal_a, buff); |
amount = bfd_bwrite (buff, amount, abfd); |
|
free (buff); |
|
if (amount != bfd_coff_aoutsz (abfd)) |
return FALSE; |
|
#ifdef COFF_IMAGE_WITH_PE |
if (! coff_apply_checksum (abfd)) |
return FALSE; |
#endif |
} |
#ifdef RS6000COFF_C |
else |
{ |
AOUTHDR buff; |
size_t size; |
|
/* XCOFF seems to always write at least a small a.out header. */ |
coff_swap_aouthdr_out (abfd, & internal_a, & buff); |
if (xcoff_data (abfd)->full_aouthdr) |
size = bfd_coff_aoutsz (abfd); |
else |
size = SMALL_AOUTSZ; |
if (bfd_bwrite (& buff, (bfd_size_type) size, abfd) != size) |
return FALSE; |
} |
#endif |
|
return TRUE; |
} |
|
static bfd_boolean |
coff_set_section_contents (bfd * abfd, |
sec_ptr section, |
const void * location, |
file_ptr offset, |
bfd_size_type count) |
{ |
if (! abfd->output_has_begun) /* Set by bfd.c handler. */ |
{ |
if (! coff_compute_section_file_positions (abfd)) |
return FALSE; |
} |
|
#if defined(_LIB) && !defined(TARG_AUX) |
/* The physical address field of a .lib section is used to hold the |
number of shared libraries in the section. This code counts the |
number of sections being written, and increments the lma field |
with the number. |
|
I have found no documentation on the contents of this section. |
Experimentation indicates that the section contains zero or more |
records, each of which has the following structure: |
|
- a (four byte) word holding the length of this record, in words, |
- a word that always seems to be set to "2", |
- the path to a shared library, null-terminated and then padded |
to a whole word boundary. |
|
bfd_assert calls have been added to alert if an attempt is made |
to write a section which doesn't follow these assumptions. The |
code has been tested on ISC 4.1 by me, and on SCO by Robert Lipe |
<robertl@arnet.com> (Thanks!). |
|
Gvran Uddeborg <gvran@uddeborg.pp.se>. */ |
if (strcmp (section->name, _LIB) == 0) |
{ |
bfd_byte *rec, *recend; |
|
rec = (bfd_byte *) location; |
recend = rec + count; |
while (rec < recend) |
{ |
++section->lma; |
rec += bfd_get_32 (abfd, rec) * 4; |
} |
|
BFD_ASSERT (rec == recend); |
} |
#endif |
|
/* Don't write out bss sections - one way to do this is to |
see if the filepos has not been set. */ |
if (section->filepos == 0) |
return TRUE; |
|
if (bfd_seek (abfd, section->filepos + offset, SEEK_SET) != 0) |
return FALSE; |
|
if (count == 0) |
return TRUE; |
|
return bfd_bwrite (location, count, abfd) == count; |
} |
|
static void * |
buy_and_read (bfd *abfd, file_ptr where, bfd_size_type size) |
{ |
void * area = bfd_alloc (abfd, size); |
|
if (!area) |
return (NULL); |
if (bfd_seek (abfd, where, SEEK_SET) != 0 |
|| bfd_bread (area, size, abfd) != size) |
return (NULL); |
return (area); |
} |
|
/* |
SUBSUBSECTION |
Reading linenumbers |
|
Creating the linenumber table is done by reading in the entire |
coff linenumber table, and creating another table for internal use. |
|
A coff linenumber table is structured so that each function |
is marked as having a line number of 0. Each line within the |
function is an offset from the first line in the function. The |
base of the line number information for the table is stored in |
the symbol associated with the function. |
|
Note: The PE format uses line number 0 for a flag indicating a |
new source file. |
|
The information is copied from the external to the internal |
table, and each symbol which marks a function is marked by |
pointing its... |
|
How does this work ? |
*/ |
|
static int |
coff_sort_func_alent (const void * arg1, const void * arg2) |
{ |
const alent *al1 = *(const alent **) arg1; |
const alent *al2 = *(const alent **) arg2; |
const coff_symbol_type *s1 = (const coff_symbol_type *) (al1->u.sym); |
const coff_symbol_type *s2 = (const coff_symbol_type *) (al2->u.sym); |
|
if (s1->symbol.value < s2->symbol.value) |
return -1; |
else if (s1->symbol.value > s2->symbol.value) |
return 1; |
|
return 0; |
} |
|
static bfd_boolean |
coff_slurp_line_table (bfd *abfd, asection *asect) |
{ |
LINENO *native_lineno; |
alent *lineno_cache; |
bfd_size_type amt; |
unsigned int counter; |
alent *cache_ptr; |
bfd_vma prev_offset = 0; |
int ordered = 1; |
unsigned int nbr_func; |
LINENO *src; |
|
BFD_ASSERT (asect->lineno == NULL); |
|
amt = ((bfd_size_type) asect->lineno_count + 1) * sizeof (alent); |
lineno_cache = (alent *) bfd_alloc (abfd, amt); |
if (lineno_cache == NULL) |
return FALSE; |
|
amt = (bfd_size_type) bfd_coff_linesz (abfd) * asect->lineno_count; |
native_lineno = (LINENO *) buy_and_read (abfd, asect->line_filepos, amt); |
if (native_lineno == NULL) |
{ |
(*_bfd_error_handler) |
(_("%B: warning: line number table read failed"), abfd); |
bfd_release (abfd, lineno_cache); |
return FALSE; |
} |
|
cache_ptr = lineno_cache; |
asect->lineno = lineno_cache; |
src = native_lineno; |
nbr_func = 0; |
|
for (counter = 0; counter < asect->lineno_count; counter++) |
{ |
struct internal_lineno dst; |
|
bfd_coff_swap_lineno_in (abfd, src, &dst); |
cache_ptr->line_number = dst.l_lnno; |
|
if (cache_ptr->line_number == 0) |
{ |
bfd_boolean warned; |
bfd_signed_vma symndx; |
coff_symbol_type *sym; |
|
nbr_func++; |
warned = FALSE; |
symndx = dst.l_addr.l_symndx; |
if (symndx < 0 |
|| (bfd_vma) symndx >= obj_raw_syment_count (abfd)) |
{ |
(*_bfd_error_handler) |
(_("%B: warning: illegal symbol index %ld in line numbers"), |
abfd, (long) symndx); |
symndx = 0; |
warned = TRUE; |
} |
|
/* FIXME: We should not be casting between ints and |
pointers like this. */ |
sym = ((coff_symbol_type *) |
((symndx + obj_raw_syments (abfd)) |
->u.syment._n._n_n._n_zeroes)); |
cache_ptr->u.sym = (asymbol *) sym; |
if (sym->lineno != NULL && ! warned) |
(*_bfd_error_handler) |
(_("%B: warning: duplicate line number information for `%s'"), |
abfd, bfd_asymbol_name (&sym->symbol)); |
|
sym->lineno = cache_ptr; |
if (sym->symbol.value < prev_offset) |
ordered = 0; |
prev_offset = sym->symbol.value; |
} |
else |
cache_ptr->u.offset = dst.l_addr.l_paddr |
- bfd_section_vma (abfd, asect); |
|
cache_ptr++; |
src++; |
} |
cache_ptr->line_number = 0; |
bfd_release (abfd, native_lineno); |
|
/* On some systems (eg AIX5.3) the lineno table may not be sorted. */ |
if (!ordered) |
{ |
/* Sort the table. */ |
alent **func_table; |
alent *n_lineno_cache; |
|
/* Create a table of functions. */ |
func_table = (alent **) bfd_alloc (abfd, nbr_func * sizeof (alent *)); |
if (func_table != NULL) |
{ |
alent **p = func_table; |
unsigned int i; |
|
for (i = 0; i < counter; i++) |
if (lineno_cache[i].line_number == 0) |
*p++ = &lineno_cache[i]; |
|
/* Sort by functions. */ |
qsort (func_table, nbr_func, sizeof (alent *), coff_sort_func_alent); |
|
/* Create the new sorted table. */ |
amt = ((bfd_size_type) asect->lineno_count + 1) * sizeof (alent); |
n_lineno_cache = (alent *) bfd_alloc (abfd, amt); |
if (n_lineno_cache != NULL) |
{ |
alent *n_cache_ptr = n_lineno_cache; |
|
for (i = 0; i < nbr_func; i++) |
{ |
coff_symbol_type *sym; |
alent *old_ptr = func_table[i]; |
|
/* Copy the function entry and update it. */ |
*n_cache_ptr = *old_ptr; |
sym = (coff_symbol_type *)n_cache_ptr->u.sym; |
sym->lineno = n_cache_ptr; |
n_cache_ptr++; |
old_ptr++; |
|
/* Copy the line number entries. */ |
while (old_ptr->line_number != 0) |
*n_cache_ptr++ = *old_ptr++; |
} |
n_cache_ptr->line_number = 0; |
memcpy (lineno_cache, n_lineno_cache, amt); |
} |
bfd_release (abfd, func_table); |
} |
} |
|
return TRUE; |
} |
|
/* Slurp in the symbol table, converting it to generic form. Note |
that if coff_relocate_section is defined, the linker will read |
symbols via coff_link_add_symbols, rather than via this routine. */ |
|
static bfd_boolean |
coff_slurp_symbol_table (bfd * abfd) |
{ |
combined_entry_type *native_symbols; |
coff_symbol_type *cached_area; |
unsigned int *table_ptr; |
bfd_size_type amt; |
unsigned int number_of_symbols = 0; |
|
if (obj_symbols (abfd)) |
return TRUE; |
|
/* Read in the symbol table. */ |
if ((native_symbols = coff_get_normalized_symtab (abfd)) == NULL) |
return FALSE; |
|
/* Allocate enough room for all the symbols in cached form. */ |
amt = obj_raw_syment_count (abfd); |
amt *= sizeof (coff_symbol_type); |
cached_area = (coff_symbol_type *) bfd_alloc (abfd, amt); |
if (cached_area == NULL) |
return FALSE; |
|
amt = obj_raw_syment_count (abfd); |
amt *= sizeof (unsigned int); |
table_ptr = (unsigned int *) bfd_alloc (abfd, amt); |
|
if (table_ptr == NULL) |
return FALSE; |
else |
{ |
coff_symbol_type *dst = cached_area; |
unsigned int last_native_index = obj_raw_syment_count (abfd); |
unsigned int this_index = 0; |
|
while (this_index < last_native_index) |
{ |
combined_entry_type *src = native_symbols + this_index; |
table_ptr[this_index] = number_of_symbols; |
dst->symbol.the_bfd = abfd; |
|
dst->symbol.name = (char *) (src->u.syment._n._n_n._n_offset); |
/* We use the native name field to point to the cached field. */ |
src->u.syment._n._n_n._n_zeroes = (bfd_hostptr_t) dst; |
dst->symbol.section = coff_section_from_bfd_index (abfd, |
src->u.syment.n_scnum); |
dst->symbol.flags = 0; |
dst->done_lineno = FALSE; |
|
switch (src->u.syment.n_sclass) |
{ |
#ifdef I960 |
case C_LEAFEXT: |
/* Fall through to next case. */ |
#endif |
|
case C_EXT: |
case C_WEAKEXT: |
#if defined ARM |
case C_THUMBEXT: |
case C_THUMBEXTFUNC: |
#endif |
#ifdef RS6000COFF_C |
case C_HIDEXT: |
#endif |
#ifdef C_SYSTEM |
case C_SYSTEM: /* System Wide variable. */ |
#endif |
#ifdef COFF_WITH_PE |
/* In PE, 0x68 (104) denotes a section symbol. */ |
case C_SECTION: |
/* In PE, 0x69 (105) denotes a weak external symbol. */ |
case C_NT_WEAK: |
#endif |
switch (coff_classify_symbol (abfd, &src->u.syment)) |
{ |
case COFF_SYMBOL_GLOBAL: |
dst->symbol.flags = BSF_EXPORT | BSF_GLOBAL; |
#if defined COFF_WITH_PE |
/* PE sets the symbol to a value relative to the |
start of the section. */ |
dst->symbol.value = src->u.syment.n_value; |
#else |
dst->symbol.value = (src->u.syment.n_value |
- dst->symbol.section->vma); |
#endif |
if (ISFCN ((src->u.syment.n_type))) |
/* A function ext does not go at the end of a |
file. */ |
dst->symbol.flags |= BSF_NOT_AT_END | BSF_FUNCTION; |
break; |
|
case COFF_SYMBOL_COMMON: |
dst->symbol.section = bfd_com_section_ptr; |
dst->symbol.value = src->u.syment.n_value; |
break; |
|
case COFF_SYMBOL_UNDEFINED: |
dst->symbol.section = bfd_und_section_ptr; |
dst->symbol.value = 0; |
break; |
|
case COFF_SYMBOL_PE_SECTION: |
dst->symbol.flags |= BSF_EXPORT | BSF_SECTION_SYM; |
dst->symbol.value = 0; |
break; |
|
case COFF_SYMBOL_LOCAL: |
dst->symbol.flags = BSF_LOCAL; |
#if defined COFF_WITH_PE |
/* PE sets the symbol to a value relative to the |
start of the section. */ |
dst->symbol.value = src->u.syment.n_value; |
#else |
dst->symbol.value = (src->u.syment.n_value |
- dst->symbol.section->vma); |
#endif |
if (ISFCN ((src->u.syment.n_type))) |
dst->symbol.flags |= BSF_NOT_AT_END | BSF_FUNCTION; |
break; |
} |
|
#ifdef RS6000COFF_C |
/* A symbol with a csect entry should not go at the end. */ |
if (src->u.syment.n_numaux > 0) |
dst->symbol.flags |= BSF_NOT_AT_END; |
#endif |
|
#ifdef COFF_WITH_PE |
if (src->u.syment.n_sclass == C_NT_WEAK) |
dst->symbol.flags |= BSF_WEAK; |
|
if (src->u.syment.n_sclass == C_SECTION |
&& src->u.syment.n_scnum > 0) |
dst->symbol.flags = BSF_LOCAL; |
#endif |
if (src->u.syment.n_sclass == C_WEAKEXT) |
dst->symbol.flags |= BSF_WEAK; |
|
break; |
|
case C_STAT: /* Static. */ |
#ifdef I960 |
case C_LEAFSTAT: /* Static leaf procedure. */ |
#endif |
#if defined ARM |
case C_THUMBSTAT: /* Thumb static. */ |
case C_THUMBLABEL: /* Thumb label. */ |
case C_THUMBSTATFUNC:/* Thumb static function. */ |
#endif |
#ifdef RS6000COFF_C |
case C_DWARF: /* A label in a dwarf section. */ |
case C_INFO: /* A label in a comment section. */ |
#endif |
case C_LABEL: /* Label. */ |
if (src->u.syment.n_scnum == N_DEBUG) |
dst->symbol.flags = BSF_DEBUGGING; |
else |
dst->symbol.flags = BSF_LOCAL; |
|
/* Base the value as an index from the base of the |
section, if there is one. */ |
if (dst->symbol.section) |
{ |
#if defined COFF_WITH_PE |
/* PE sets the symbol to a value relative to the |
start of the section. */ |
dst->symbol.value = src->u.syment.n_value; |
#else |
dst->symbol.value = (src->u.syment.n_value |
- dst->symbol.section->vma); |
#endif |
} |
else |
dst->symbol.value = src->u.syment.n_value; |
break; |
|
case C_MOS: /* Member of structure. */ |
case C_EOS: /* End of structure. */ |
case C_REGPARM: /* Register parameter. */ |
case C_REG: /* register variable. */ |
/* C_AUTOARG conflicts with TI COFF C_UEXT. */ |
#if !defined (TIC80COFF) && !defined (TICOFF) |
#ifdef C_AUTOARG |
case C_AUTOARG: /* 960-specific storage class. */ |
#endif |
#endif |
case C_TPDEF: /* Type definition. */ |
case C_ARG: |
case C_AUTO: /* Automatic variable. */ |
case C_FIELD: /* Bit field. */ |
case C_ENTAG: /* Enumeration tag. */ |
case C_MOE: /* Member of enumeration. */ |
case C_MOU: /* Member of union. */ |
case C_UNTAG: /* Union tag. */ |
dst->symbol.flags = BSF_DEBUGGING; |
dst->symbol.value = (src->u.syment.n_value); |
break; |
|
case C_FILE: /* File name. */ |
case C_STRTAG: /* Structure tag. */ |
#ifdef RS6000COFF_C |
case C_GSYM: |
case C_LSYM: |
case C_PSYM: |
case C_RSYM: |
case C_RPSYM: |
case C_STSYM: |
case C_TCSYM: |
case C_BCOMM: |
case C_ECOML: |
case C_ECOMM: |
case C_DECL: |
case C_ENTRY: |
case C_FUN: |
case C_ESTAT: |
#endif |
dst->symbol.flags = BSF_DEBUGGING; |
dst->symbol.value = (src->u.syment.n_value); |
break; |
|
#ifdef RS6000COFF_C |
case C_BINCL: /* Beginning of include file. */ |
case C_EINCL: /* Ending of include file. */ |
/* The value is actually a pointer into the line numbers |
of the file. We locate the line number entry, and |
set the section to the section which contains it, and |
the value to the index in that section. */ |
{ |
asection *sec; |
|
dst->symbol.flags = BSF_DEBUGGING; |
for (sec = abfd->sections; sec != NULL; sec = sec->next) |
if (sec->line_filepos <= (file_ptr) src->u.syment.n_value |
&& ((file_ptr) (sec->line_filepos |
+ sec->lineno_count * bfd_coff_linesz (abfd)) |
> (file_ptr) src->u.syment.n_value)) |
break; |
if (sec == NULL) |
dst->symbol.value = 0; |
else |
{ |
dst->symbol.section = sec; |
dst->symbol.value = ((src->u.syment.n_value |
- sec->line_filepos) |
/ bfd_coff_linesz (abfd)); |
src->fix_line = 1; |
} |
} |
break; |
|
case C_BSTAT: |
dst->symbol.flags = BSF_DEBUGGING; |
|
/* The value is actually a symbol index. Save a pointer |
to the symbol instead of the index. FIXME: This |
should use a union. */ |
src->u.syment.n_value = |
(long) (intptr_t) (native_symbols + src->u.syment.n_value); |
dst->symbol.value = src->u.syment.n_value; |
src->fix_value = 1; |
break; |
#endif |
|
case C_BLOCK: /* ".bb" or ".eb". */ |
case C_FCN: /* ".bf" or ".ef" (or PE ".lf"). */ |
case C_EFCN: /* Physical end of function. */ |
#if defined COFF_WITH_PE |
/* PE sets the symbol to a value relative to the start |
of the section. */ |
dst->symbol.value = src->u.syment.n_value; |
if (strcmp (dst->symbol.name, ".bf") != 0) |
{ |
/* PE uses funny values for .ef and .lf; don't |
relocate them. */ |
dst->symbol.flags = BSF_DEBUGGING; |
} |
else |
dst->symbol.flags = BSF_DEBUGGING | BSF_DEBUGGING_RELOC; |
#else |
/* Base the value as an index from the base of the |
section. */ |
dst->symbol.flags = BSF_LOCAL; |
dst->symbol.value = (src->u.syment.n_value |
- dst->symbol.section->vma); |
#endif |
break; |
|
case C_STATLAB: /* Static load time label. */ |
dst->symbol.value = src->u.syment.n_value; |
dst->symbol.flags = BSF_GLOBAL; |
break; |
|
case C_NULL: |
/* PE DLLs sometimes have zeroed out symbols for some |
reason. Just ignore them without a warning. */ |
if (src->u.syment.n_type == 0 |
&& src->u.syment.n_value == 0 |
&& src->u.syment.n_scnum == 0) |
break; |
#ifdef RS6000COFF_C |
/* XCOFF specific: deleted entry. */ |
if (src->u.syment.n_value == C_NULL_VALUE) |
break; |
#endif |
/* Fall through. */ |
case C_EXTDEF: /* External definition. */ |
case C_ULABEL: /* Undefined label. */ |
case C_USTATIC: /* Undefined static. */ |
#ifndef COFF_WITH_PE |
/* C_LINE in regular coff is 0x68. NT has taken over this storage |
class to represent a section symbol. */ |
case C_LINE: /* line # reformatted as symbol table entry. */ |
/* NT uses 0x67 for a weak symbol, not C_ALIAS. */ |
case C_ALIAS: /* Duplicate tag. */ |
#endif |
/* New storage classes for TI COFF. */ |
#if defined(TIC80COFF) || defined(TICOFF) |
case C_UEXT: /* Tentative external definition. */ |
#endif |
case C_EXTLAB: /* External load time label. */ |
case C_HIDDEN: /* Ext symbol in dmert public lib. */ |
default: |
(*_bfd_error_handler) |
(_("%B: Unrecognized storage class %d for %s symbol `%s'"), |
abfd, src->u.syment.n_sclass, |
dst->symbol.section->name, dst->symbol.name); |
dst->symbol.flags = BSF_DEBUGGING; |
dst->symbol.value = (src->u.syment.n_value); |
break; |
} |
|
dst->native = src; |
|
dst->symbol.udata.i = 0; |
dst->lineno = NULL; |
this_index += (src->u.syment.n_numaux) + 1; |
dst++; |
number_of_symbols++; |
} |
} |
|
obj_symbols (abfd) = cached_area; |
obj_raw_syments (abfd) = native_symbols; |
|
bfd_get_symcount (abfd) = number_of_symbols; |
obj_convert (abfd) = table_ptr; |
/* Slurp the line tables for each section too. */ |
{ |
asection *p; |
|
p = abfd->sections; |
while (p) |
{ |
coff_slurp_line_table (abfd, p); |
p = p->next; |
} |
} |
|
return TRUE; |
} |
|
/* Classify a COFF symbol. A couple of targets have globally visible |
symbols which are not class C_EXT, and this handles those. It also |
recognizes some special PE cases. */ |
|
static enum coff_symbol_classification |
coff_classify_symbol (bfd *abfd, |
struct internal_syment *syment) |
{ |
/* FIXME: This partially duplicates the switch in |
coff_slurp_symbol_table. */ |
switch (syment->n_sclass) |
{ |
case C_EXT: |
case C_WEAKEXT: |
#ifdef I960 |
case C_LEAFEXT: |
#endif |
#ifdef ARM |
case C_THUMBEXT: |
case C_THUMBEXTFUNC: |
#endif |
#ifdef C_SYSTEM |
case C_SYSTEM: |
#endif |
#ifdef COFF_WITH_PE |
case C_NT_WEAK: |
#endif |
if (syment->n_scnum == 0) |
{ |
if (syment->n_value == 0) |
return COFF_SYMBOL_UNDEFINED; |
else |
return COFF_SYMBOL_COMMON; |
} |
return COFF_SYMBOL_GLOBAL; |
|
default: |
break; |
} |
|
#ifdef COFF_WITH_PE |
if (syment->n_sclass == C_STAT) |
{ |
if (syment->n_scnum == 0) |
/* The Microsoft compiler sometimes generates these if a |
small static function is inlined every time it is used. |
The function is discarded, but the symbol table entry |
remains. */ |
return COFF_SYMBOL_LOCAL; |
|
#ifdef STRICT_PE_FORMAT |
/* This is correct for Microsoft generated objects, but it |
breaks gas generated objects. */ |
if (syment->n_value == 0) |
{ |
asection *sec; |
char buf[SYMNMLEN + 1]; |
|
sec = coff_section_from_bfd_index (abfd, syment->n_scnum); |
if (sec != NULL |
&& (strcmp (bfd_get_section_name (abfd, sec), |
_bfd_coff_internal_syment_name (abfd, syment, buf)) |
== 0)) |
return COFF_SYMBOL_PE_SECTION; |
} |
#endif |
|
return COFF_SYMBOL_LOCAL; |
} |
|
if (syment->n_sclass == C_SECTION) |
{ |
/* In some cases in a DLL generated by the Microsoft linker, the |
n_value field will contain garbage. FIXME: This should |
probably be handled by the swapping function instead. */ |
syment->n_value = 0; |
if (syment->n_scnum == 0) |
return COFF_SYMBOL_UNDEFINED; |
return COFF_SYMBOL_PE_SECTION; |
} |
#endif /* COFF_WITH_PE */ |
|
/* If it is not a global symbol, we presume it is a local symbol. */ |
if (syment->n_scnum == 0) |
{ |
char buf[SYMNMLEN + 1]; |
|
(*_bfd_error_handler) |
(_("warning: %B: local symbol `%s' has no section"), |
abfd, _bfd_coff_internal_syment_name (abfd, syment, buf)); |
} |
|
return COFF_SYMBOL_LOCAL; |
} |
|
/* |
SUBSUBSECTION |
Reading relocations |
|
Coff relocations are easily transformed into the internal BFD form |
(@code{arelent}). |
|
Reading a coff relocation table is done in the following stages: |
|
o Read the entire coff relocation table into memory. |
|
o Process each relocation in turn; first swap it from the |
external to the internal form. |
|
o Turn the symbol referenced in the relocation's symbol index |
into a pointer into the canonical symbol table. |
This table is the same as the one returned by a call to |
@code{bfd_canonicalize_symtab}. The back end will call that |
routine and save the result if a canonicalization hasn't been done. |
|
o The reloc index is turned into a pointer to a howto |
structure, in a back end specific way. For instance, the 386 |
and 960 use the @code{r_type} to directly produce an index |
into a howto table vector; the 88k subtracts a number from the |
@code{r_type} field and creates an addend field. |
*/ |
|
#ifndef CALC_ADDEND |
#define CALC_ADDEND(abfd, ptr, reloc, cache_ptr) \ |
{ \ |
coff_symbol_type *coffsym = 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 (abfd, ptr); \ |
if (coffsym != NULL \ |
&& coffsym->native->u.syment.n_scnum == 0) \ |
cache_ptr->addend = 0; \ |
else if (ptr && bfd_asymbol_bfd (ptr) == abfd \ |
&& ptr->section != NULL) \ |
cache_ptr->addend = - (ptr->section->vma + ptr->value); \ |
else \ |
cache_ptr->addend = 0; \ |
} |
#endif |
|
static bfd_boolean |
coff_slurp_reloc_table (bfd * abfd, sec_ptr asect, asymbol ** symbols) |
{ |
RELOC *native_relocs; |
arelent *reloc_cache; |
arelent *cache_ptr; |
unsigned int idx; |
bfd_size_type amt; |
|
if (asect->relocation) |
return TRUE; |
if (asect->reloc_count == 0) |
return TRUE; |
if (asect->flags & SEC_CONSTRUCTOR) |
return TRUE; |
if (!coff_slurp_symbol_table (abfd)) |
return FALSE; |
|
amt = (bfd_size_type) bfd_coff_relsz (abfd) * asect->reloc_count; |
native_relocs = (RELOC *) buy_and_read (abfd, asect->rel_filepos, amt); |
amt = (bfd_size_type) asect->reloc_count * sizeof (arelent); |
reloc_cache = (arelent *) bfd_alloc (abfd, amt); |
|
if (reloc_cache == NULL || native_relocs == NULL) |
return FALSE; |
|
for (idx = 0; idx < asect->reloc_count; idx++) |
{ |
struct internal_reloc dst; |
struct external_reloc *src; |
#ifndef RELOC_PROCESSING |
asymbol *ptr; |
#endif |
|
cache_ptr = reloc_cache + idx; |
src = native_relocs + idx; |
|
dst.r_offset = 0; |
coff_swap_reloc_in (abfd, src, &dst); |
|
#ifdef RELOC_PROCESSING |
RELOC_PROCESSING (cache_ptr, &dst, symbols, abfd, asect); |
#else |
cache_ptr->address = dst.r_vaddr; |
|
if (dst.r_symndx != -1) |
{ |
if (dst.r_symndx < 0 || dst.r_symndx >= obj_conv_table_size (abfd)) |
{ |
(*_bfd_error_handler) |
(_("%B: warning: illegal symbol index %ld in relocs"), |
abfd, (long) dst.r_symndx); |
cache_ptr->sym_ptr_ptr = bfd_abs_section_ptr->symbol_ptr_ptr; |
ptr = NULL; |
} |
else |
{ |
cache_ptr->sym_ptr_ptr = (symbols |
+ obj_convert (abfd)[dst.r_symndx]); |
ptr = *(cache_ptr->sym_ptr_ptr); |
} |
} |
else |
{ |
cache_ptr->sym_ptr_ptr = bfd_abs_section_ptr->symbol_ptr_ptr; |
ptr = NULL; |
} |
|
/* The symbols definitions that we have read in have been |
relocated as if their sections started at 0. But the offsets |
refering to the symbols in the raw data have not been |
modified, so we have to have a negative addend to compensate. |
|
Note that symbols which used to be common must be left alone. */ |
|
/* Calculate any reloc addend by looking at the symbol. */ |
CALC_ADDEND (abfd, ptr, dst, cache_ptr); |
(void) ptr; |
|
cache_ptr->address -= asect->vma; |
/* !! cache_ptr->section = NULL;*/ |
|
/* Fill in the cache_ptr->howto field from dst.r_type. */ |
RTYPE2HOWTO (cache_ptr, &dst); |
#endif /* RELOC_PROCESSING */ |
|
if (cache_ptr->howto == NULL) |
{ |
(*_bfd_error_handler) |
(_("%B: illegal relocation type %d at address 0x%lx"), |
abfd, dst.r_type, (long) dst.r_vaddr); |
bfd_set_error (bfd_error_bad_value); |
return FALSE; |
} |
} |
|
asect->relocation = reloc_cache; |
return TRUE; |
} |
|
#ifndef coff_rtype_to_howto |
#ifdef RTYPE2HOWTO |
|
/* Get the howto structure for a reloc. This is only used if the file |
including this one defines coff_relocate_section to be |
_bfd_coff_generic_relocate_section, so it is OK if it does not |
always work. It is the responsibility of the including file to |
make sure it is reasonable if it is needed. */ |
|
static reloc_howto_type * |
coff_rtype_to_howto (bfd *abfd ATTRIBUTE_UNUSED, |
asection *sec ATTRIBUTE_UNUSED, |
struct internal_reloc *rel, |
struct coff_link_hash_entry *h ATTRIBUTE_UNUSED, |
struct internal_syment *sym ATTRIBUTE_UNUSED, |
bfd_vma *addendp ATTRIBUTE_UNUSED) |
{ |
arelent genrel; |
|
genrel.howto = NULL; |
RTYPE2HOWTO (&genrel, rel); |
return genrel.howto; |
} |
|
#else /* ! defined (RTYPE2HOWTO) */ |
|
#define coff_rtype_to_howto NULL |
|
#endif /* ! defined (RTYPE2HOWTO) */ |
#endif /* ! defined (coff_rtype_to_howto) */ |
|
/* This is stupid. This function should be a boolean predicate. */ |
|
static long |
coff_canonicalize_reloc (bfd * abfd, |
sec_ptr section, |
arelent ** relptr, |
asymbol ** symbols) |
{ |
arelent *tblptr = section->relocation; |
unsigned int count = 0; |
|
if (section->flags & SEC_CONSTRUCTOR) |
{ |
/* This section has relocs made up by us, they are not in the |
file, so take them out of their chain and place them into |
the data area provided. */ |
arelent_chain *chain = section->constructor_chain; |
|
for (count = 0; count < section->reloc_count; count++) |
{ |
*relptr++ = &chain->relent; |
chain = chain->next; |
} |
} |
else |
{ |
if (! coff_slurp_reloc_table (abfd, section, symbols)) |
return -1; |
|
tblptr = section->relocation; |
|
for (; count++ < section->reloc_count;) |
*relptr++ = tblptr++; |
} |
*relptr = 0; |
return section->reloc_count; |
} |
|
#ifndef coff_reloc16_estimate |
#define coff_reloc16_estimate dummy_reloc16_estimate |
|
static int |
dummy_reloc16_estimate (bfd *abfd ATTRIBUTE_UNUSED, |
asection *input_section ATTRIBUTE_UNUSED, |
arelent *reloc ATTRIBUTE_UNUSED, |
unsigned int shrink ATTRIBUTE_UNUSED, |
struct bfd_link_info *link_info ATTRIBUTE_UNUSED) |
{ |
abort (); |
return 0; |
} |
|
#endif |
|
#ifndef coff_reloc16_extra_cases |
|
#define coff_reloc16_extra_cases dummy_reloc16_extra_cases |
|
/* This works even if abort is not declared in any header file. */ |
|
static void |
dummy_reloc16_extra_cases (bfd *abfd ATTRIBUTE_UNUSED, |
struct bfd_link_info *link_info ATTRIBUTE_UNUSED, |
struct bfd_link_order *link_order ATTRIBUTE_UNUSED, |
arelent *reloc ATTRIBUTE_UNUSED, |
bfd_byte *data ATTRIBUTE_UNUSED, |
unsigned int *src_ptr ATTRIBUTE_UNUSED, |
unsigned int *dst_ptr ATTRIBUTE_UNUSED) |
{ |
abort (); |
} |
#endif |
|
#ifndef coff_bfd_link_hash_table_free |
#define coff_bfd_link_hash_table_free _bfd_generic_link_hash_table_free |
#endif |
|
/* If coff_relocate_section is defined, we can use the optimized COFF |
backend linker. Otherwise we must continue to use the old linker. */ |
|
#ifdef coff_relocate_section |
|
#ifndef coff_bfd_link_hash_table_create |
#define coff_bfd_link_hash_table_create _bfd_coff_link_hash_table_create |
#endif |
#ifndef coff_bfd_link_add_symbols |
#define coff_bfd_link_add_symbols _bfd_coff_link_add_symbols |
#endif |
#ifndef coff_bfd_final_link |
#define coff_bfd_final_link _bfd_coff_final_link |
#endif |
|
#else /* ! defined (coff_relocate_section) */ |
|
#define coff_relocate_section NULL |
#ifndef coff_bfd_link_hash_table_create |
#define coff_bfd_link_hash_table_create _bfd_generic_link_hash_table_create |
#endif |
#ifndef coff_bfd_link_add_symbols |
#define coff_bfd_link_add_symbols _bfd_generic_link_add_symbols |
#endif |
#define coff_bfd_final_link _bfd_generic_final_link |
|
#endif /* ! defined (coff_relocate_section) */ |
|
#define coff_bfd_link_just_syms _bfd_generic_link_just_syms |
#define coff_bfd_copy_link_hash_symbol_type \ |
_bfd_generic_copy_link_hash_symbol_type |
#define coff_bfd_link_split_section _bfd_generic_link_split_section |
|
#ifndef coff_start_final_link |
#define coff_start_final_link NULL |
#endif |
|
#ifndef coff_adjust_symndx |
#define coff_adjust_symndx NULL |
#endif |
|
#ifndef coff_link_add_one_symbol |
#define coff_link_add_one_symbol _bfd_generic_link_add_one_symbol |
#endif |
|
#ifndef coff_link_output_has_begun |
|
static bfd_boolean |
coff_link_output_has_begun (bfd * abfd, |
struct coff_final_link_info * info ATTRIBUTE_UNUSED) |
{ |
return abfd->output_has_begun; |
} |
#endif |
|
#ifndef coff_final_link_postscript |
|
static bfd_boolean |
coff_final_link_postscript (bfd * abfd ATTRIBUTE_UNUSED, |
struct coff_final_link_info * pfinfo ATTRIBUTE_UNUSED) |
{ |
return TRUE; |
} |
#endif |
|
#ifndef coff_SWAP_aux_in |
#define coff_SWAP_aux_in coff_swap_aux_in |
#endif |
#ifndef coff_SWAP_sym_in |
#define coff_SWAP_sym_in coff_swap_sym_in |
#endif |
#ifndef coff_SWAP_lineno_in |
#define coff_SWAP_lineno_in coff_swap_lineno_in |
#endif |
#ifndef coff_SWAP_aux_out |
#define coff_SWAP_aux_out coff_swap_aux_out |
#endif |
#ifndef coff_SWAP_sym_out |
#define coff_SWAP_sym_out coff_swap_sym_out |
#endif |
#ifndef coff_SWAP_lineno_out |
#define coff_SWAP_lineno_out coff_swap_lineno_out |
#endif |
#ifndef coff_SWAP_reloc_out |
#define coff_SWAP_reloc_out coff_swap_reloc_out |
#endif |
#ifndef coff_SWAP_filehdr_out |
#define coff_SWAP_filehdr_out coff_swap_filehdr_out |
#endif |
#ifndef coff_SWAP_aouthdr_out |
#define coff_SWAP_aouthdr_out coff_swap_aouthdr_out |
#endif |
#ifndef coff_SWAP_scnhdr_out |
#define coff_SWAP_scnhdr_out coff_swap_scnhdr_out |
#endif |
#ifndef coff_SWAP_reloc_in |
#define coff_SWAP_reloc_in coff_swap_reloc_in |
#endif |
#ifndef coff_SWAP_filehdr_in |
#define coff_SWAP_filehdr_in coff_swap_filehdr_in |
#endif |
#ifndef coff_SWAP_aouthdr_in |
#define coff_SWAP_aouthdr_in coff_swap_aouthdr_in |
#endif |
#ifndef coff_SWAP_scnhdr_in |
#define coff_SWAP_scnhdr_in coff_swap_scnhdr_in |
#endif |
|
static bfd_coff_backend_data bfd_coff_std_swap_table ATTRIBUTE_UNUSED = |
{ |
coff_SWAP_aux_in, coff_SWAP_sym_in, coff_SWAP_lineno_in, |
coff_SWAP_aux_out, coff_SWAP_sym_out, |
coff_SWAP_lineno_out, coff_SWAP_reloc_out, |
coff_SWAP_filehdr_out, coff_SWAP_aouthdr_out, |
coff_SWAP_scnhdr_out, |
FILHSZ, AOUTSZ, SCNHSZ, SYMESZ, AUXESZ, RELSZ, LINESZ, FILNMLEN, |
#ifdef COFF_LONG_FILENAMES |
TRUE, |
#else |
FALSE, |
#endif |
COFF_DEFAULT_LONG_SECTION_NAMES, |
COFF_DEFAULT_SECTION_ALIGNMENT_POWER, |
#ifdef COFF_FORCE_SYMBOLS_IN_STRINGS |
TRUE, |
#else |
FALSE, |
#endif |
#ifdef COFF_DEBUG_STRING_WIDE_PREFIX |
4, |
#else |
2, |
#endif |
coff_SWAP_filehdr_in, coff_SWAP_aouthdr_in, coff_SWAP_scnhdr_in, |
coff_SWAP_reloc_in, coff_bad_format_hook, coff_set_arch_mach_hook, |
coff_mkobject_hook, styp_to_sec_flags, coff_set_alignment_hook, |
coff_slurp_symbol_table, symname_in_debug_hook, coff_pointerize_aux_hook, |
coff_print_aux, coff_reloc16_extra_cases, coff_reloc16_estimate, |
coff_classify_symbol, coff_compute_section_file_positions, |
coff_start_final_link, coff_relocate_section, coff_rtype_to_howto, |
coff_adjust_symndx, coff_link_add_one_symbol, |
coff_link_output_has_begun, coff_final_link_postscript, |
bfd_pe_print_pdata |
}; |
|
#ifdef TICOFF |
/* COFF0 differs in file/section header size and relocation entry size. */ |
|
static bfd_coff_backend_data ticoff0_swap_table = |
{ |
coff_SWAP_aux_in, coff_SWAP_sym_in, coff_SWAP_lineno_in, |
coff_SWAP_aux_out, coff_SWAP_sym_out, |
coff_SWAP_lineno_out, coff_SWAP_reloc_out, |
coff_SWAP_filehdr_out, coff_SWAP_aouthdr_out, |
coff_SWAP_scnhdr_out, |
FILHSZ_V0, AOUTSZ, SCNHSZ_V01, SYMESZ, AUXESZ, RELSZ_V0, LINESZ, FILNMLEN, |
#ifdef COFF_LONG_FILENAMES |
TRUE, |
#else |
FALSE, |
#endif |
COFF_DEFAULT_LONG_SECTION_NAMES, |
COFF_DEFAULT_SECTION_ALIGNMENT_POWER, |
#ifdef COFF_FORCE_SYMBOLS_IN_STRINGS |
TRUE, |
#else |
FALSE, |
#endif |
#ifdef COFF_DEBUG_STRING_WIDE_PREFIX |
4, |
#else |
2, |
#endif |
coff_SWAP_filehdr_in, coff_SWAP_aouthdr_in, coff_SWAP_scnhdr_in, |
coff_SWAP_reloc_in, ticoff0_bad_format_hook, coff_set_arch_mach_hook, |
coff_mkobject_hook, styp_to_sec_flags, coff_set_alignment_hook, |
coff_slurp_symbol_table, symname_in_debug_hook, coff_pointerize_aux_hook, |
coff_print_aux, coff_reloc16_extra_cases, coff_reloc16_estimate, |
coff_classify_symbol, coff_compute_section_file_positions, |
coff_start_final_link, coff_relocate_section, coff_rtype_to_howto, |
coff_adjust_symndx, coff_link_add_one_symbol, |
coff_link_output_has_begun, coff_final_link_postscript, |
bfd_pe_print_pdata |
}; |
#endif |
|
#ifdef TICOFF |
/* COFF1 differs in section header size. */ |
|
static bfd_coff_backend_data ticoff1_swap_table = |
{ |
coff_SWAP_aux_in, coff_SWAP_sym_in, coff_SWAP_lineno_in, |
coff_SWAP_aux_out, coff_SWAP_sym_out, |
coff_SWAP_lineno_out, coff_SWAP_reloc_out, |
coff_SWAP_filehdr_out, coff_SWAP_aouthdr_out, |
coff_SWAP_scnhdr_out, |
FILHSZ, AOUTSZ, SCNHSZ_V01, SYMESZ, AUXESZ, RELSZ, LINESZ, FILNMLEN, |
#ifdef COFF_LONG_FILENAMES |
TRUE, |
#else |
FALSE, |
#endif |
COFF_DEFAULT_LONG_SECTION_NAMES, |
COFF_DEFAULT_SECTION_ALIGNMENT_POWER, |
#ifdef COFF_FORCE_SYMBOLS_IN_STRINGS |
TRUE, |
#else |
FALSE, |
#endif |
#ifdef COFF_DEBUG_STRING_WIDE_PREFIX |
4, |
#else |
2, |
#endif |
coff_SWAP_filehdr_in, coff_SWAP_aouthdr_in, coff_SWAP_scnhdr_in, |
coff_SWAP_reloc_in, ticoff1_bad_format_hook, coff_set_arch_mach_hook, |
coff_mkobject_hook, styp_to_sec_flags, coff_set_alignment_hook, |
coff_slurp_symbol_table, symname_in_debug_hook, coff_pointerize_aux_hook, |
coff_print_aux, coff_reloc16_extra_cases, coff_reloc16_estimate, |
coff_classify_symbol, coff_compute_section_file_positions, |
coff_start_final_link, coff_relocate_section, coff_rtype_to_howto, |
coff_adjust_symndx, coff_link_add_one_symbol, |
coff_link_output_has_begun, coff_final_link_postscript, |
bfd_pe_print_pdata /* huh */ |
}; |
#endif |
|
#ifndef coff_close_and_cleanup |
#define coff_close_and_cleanup _bfd_generic_close_and_cleanup |
#endif |
|
#ifndef coff_bfd_free_cached_info |
#define coff_bfd_free_cached_info _bfd_generic_bfd_free_cached_info |
#endif |
|
#ifndef coff_get_section_contents |
#define coff_get_section_contents _bfd_generic_get_section_contents |
#endif |
|
#ifndef coff_bfd_copy_private_symbol_data |
#define coff_bfd_copy_private_symbol_data _bfd_generic_bfd_copy_private_symbol_data |
#endif |
|
#ifndef coff_bfd_copy_private_header_data |
#define coff_bfd_copy_private_header_data _bfd_generic_bfd_copy_private_header_data |
#endif |
|
#ifndef coff_bfd_copy_private_section_data |
#define coff_bfd_copy_private_section_data _bfd_generic_bfd_copy_private_section_data |
#endif |
|
#ifndef coff_bfd_copy_private_bfd_data |
#define coff_bfd_copy_private_bfd_data _bfd_generic_bfd_copy_private_bfd_data |
#endif |
|
#ifndef coff_bfd_merge_private_bfd_data |
#define coff_bfd_merge_private_bfd_data _bfd_generic_bfd_merge_private_bfd_data |
#endif |
|
#ifndef coff_bfd_set_private_flags |
#define coff_bfd_set_private_flags _bfd_generic_bfd_set_private_flags |
#endif |
|
#ifndef coff_bfd_print_private_bfd_data |
#define coff_bfd_print_private_bfd_data _bfd_generic_bfd_print_private_bfd_data |
#endif |
|
#ifndef coff_bfd_is_local_label_name |
#define coff_bfd_is_local_label_name _bfd_coff_is_local_label_name |
#endif |
|
#ifndef coff_bfd_is_target_special_symbol |
#define coff_bfd_is_target_special_symbol ((bfd_boolean (*) (bfd *, asymbol *)) bfd_false) |
#endif |
|
#ifndef coff_read_minisymbols |
#define coff_read_minisymbols _bfd_generic_read_minisymbols |
#endif |
|
#ifndef coff_minisymbol_to_symbol |
#define coff_minisymbol_to_symbol _bfd_generic_minisymbol_to_symbol |
#endif |
|
/* The reloc lookup routine must be supplied by each individual COFF |
backend. */ |
#ifndef coff_bfd_reloc_type_lookup |
#define coff_bfd_reloc_type_lookup _bfd_norelocs_bfd_reloc_type_lookup |
#endif |
#ifndef coff_bfd_reloc_name_lookup |
#define coff_bfd_reloc_name_lookup _bfd_norelocs_bfd_reloc_name_lookup |
#endif |
|
#ifndef coff_bfd_get_relocated_section_contents |
#define coff_bfd_get_relocated_section_contents \ |
bfd_generic_get_relocated_section_contents |
#endif |
|
#ifndef coff_bfd_relax_section |
#define coff_bfd_relax_section bfd_generic_relax_section |
#endif |
|
#ifndef coff_bfd_gc_sections |
#define coff_bfd_gc_sections bfd_generic_gc_sections |
#endif |
|
#ifndef coff_bfd_lookup_section_flags |
#define coff_bfd_lookup_section_flags bfd_generic_lookup_section_flags |
#endif |
|
#ifndef coff_bfd_merge_sections |
#define coff_bfd_merge_sections bfd_generic_merge_sections |
#endif |
|
#ifndef coff_bfd_is_group_section |
#define coff_bfd_is_group_section bfd_generic_is_group_section |
#endif |
|
#ifndef coff_bfd_discard_group |
#define coff_bfd_discard_group bfd_generic_discard_group |
#endif |
|
#ifndef coff_section_already_linked |
#define coff_section_already_linked \ |
_bfd_coff_section_already_linked |
#endif |
|
#ifndef coff_bfd_define_common_symbol |
#define coff_bfd_define_common_symbol bfd_generic_define_common_symbol |
#endif |
|
#define CREATE_BIG_COFF_TARGET_VEC(VAR, NAME, EXTRA_O_FLAGS, EXTRA_S_FLAGS, UNDER, ALTERNATIVE, SWAP_TABLE) \ |
const bfd_target VAR = \ |
{ \ |
NAME , \ |
bfd_target_coff_flavour, \ |
BFD_ENDIAN_BIG, /* Data byte order is big. */ \ |
BFD_ENDIAN_BIG, /* Header byte order is big. */ \ |
/* object flags */ \ |
(HAS_RELOC | EXEC_P | HAS_LINENO | HAS_DEBUG | \ |
HAS_SYMS | HAS_LOCALS | WP_TEXT | EXTRA_O_FLAGS), \ |
/* section flags */ \ |
(SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC | EXTRA_S_FLAGS),\ |
UNDER, /* Leading symbol underscore. */ \ |
'/', /* AR_pad_char. */ \ |
15, /* AR_max_namelen. */ \ |
0, /* match priority. */ \ |
\ |
/* Data conversion functions. */ \ |
bfd_getb64, bfd_getb_signed_64, bfd_putb64, \ |
bfd_getb32, bfd_getb_signed_32, bfd_putb32, \ |
bfd_getb16, bfd_getb_signed_16, bfd_putb16, \ |
\ |
/* Header conversion functions. */ \ |
bfd_getb64, bfd_getb_signed_64, bfd_putb64, \ |
bfd_getb32, bfd_getb_signed_32, bfd_putb32, \ |
bfd_getb16, bfd_getb_signed_16, bfd_putb16, \ |
\ |
/* bfd_check_format. */ \ |
{ _bfd_dummy_target, coff_object_p, bfd_generic_archive_p, \ |
_bfd_dummy_target }, \ |
/* bfd_set_format. */ \ |
{ bfd_false, coff_mkobject, _bfd_generic_mkarchive, bfd_false }, \ |
/* bfd_write_contents. */ \ |
{ bfd_false, coff_write_object_contents, _bfd_write_archive_contents, \ |
bfd_false }, \ |
\ |
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), \ |
\ |
ALTERNATIVE, \ |
\ |
SWAP_TABLE \ |
}; |
|
#define CREATE_BIGHDR_COFF_TARGET_VEC(VAR, NAME, EXTRA_O_FLAGS, EXTRA_S_FLAGS, UNDER, ALTERNATIVE, SWAP_TABLE) \ |
const bfd_target VAR = \ |
{ \ |
NAME , \ |
bfd_target_coff_flavour, \ |
BFD_ENDIAN_LITTLE, /* Data byte order is little. */ \ |
BFD_ENDIAN_BIG, /* Header byte order is big. */ \ |
/* object flags */ \ |
(HAS_RELOC | EXEC_P | HAS_LINENO | HAS_DEBUG | \ |
HAS_SYMS | HAS_LOCALS | WP_TEXT | EXTRA_O_FLAGS), \ |
/* section flags */ \ |
(SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC | EXTRA_S_FLAGS),\ |
UNDER, /* Leading symbol underscore. */ \ |
'/', /* AR_pad_char. */ \ |
15, /* AR_max_namelen. */ \ |
0, /* match priority. */ \ |
\ |
/* Data conversion functions. */ \ |
bfd_getb64, bfd_getb_signed_64, bfd_putb64, \ |
bfd_getb32, bfd_getb_signed_32, bfd_putb32, \ |
bfd_getb16, bfd_getb_signed_16, bfd_putb16, \ |
\ |
/* Header conversion functions. */ \ |
bfd_getb64, bfd_getb_signed_64, bfd_putb64, \ |
bfd_getb32, bfd_getb_signed_32, bfd_putb32, \ |
bfd_getb16, bfd_getb_signed_16, bfd_putb16, \ |
\ |
/* bfd_check_format. */ \ |
{ _bfd_dummy_target, coff_object_p, bfd_generic_archive_p, \ |
_bfd_dummy_target }, \ |
/* bfd_set_format. */ \ |
{ bfd_false, coff_mkobject, _bfd_generic_mkarchive, bfd_false }, \ |
/* bfd_write_contents. */ \ |
{ bfd_false, coff_write_object_contents, _bfd_write_archive_contents, \ |
bfd_false }, \ |
\ |
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), \ |
\ |
ALTERNATIVE, \ |
\ |
SWAP_TABLE \ |
}; |
|
#define CREATE_LITTLE_COFF_TARGET_VEC(VAR, NAME, EXTRA_O_FLAGS, EXTRA_S_FLAGS, UNDER, ALTERNATIVE, SWAP_TABLE) \ |
const bfd_target VAR = \ |
{ \ |
NAME , \ |
bfd_target_coff_flavour, \ |
BFD_ENDIAN_LITTLE, /* Data byte order is little. */ \ |
BFD_ENDIAN_LITTLE, /* Header byte order is little. */ \ |
/* object flags */ \ |
(HAS_RELOC | EXEC_P | HAS_LINENO | HAS_DEBUG | \ |
HAS_SYMS | HAS_LOCALS | WP_TEXT | EXTRA_O_FLAGS), \ |
/* section flags */ \ |
(SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC | EXTRA_S_FLAGS),\ |
UNDER, /* Leading symbol underscore. */ \ |
'/', /* AR_pad_char. */ \ |
15, /* AR_max_namelen. */ \ |
0, /* match priority. */ \ |
\ |
/* Data conversion functions. */ \ |
bfd_getl64, bfd_getl_signed_64, bfd_putl64, \ |
bfd_getl32, bfd_getl_signed_32, bfd_putl32, \ |
bfd_getl16, bfd_getl_signed_16, bfd_putl16, \ |
/* Header conversion functions. */ \ |
bfd_getl64, bfd_getl_signed_64, bfd_putl64, \ |
bfd_getl32, bfd_getl_signed_32, bfd_putl32, \ |
bfd_getl16, bfd_getl_signed_16, bfd_putl16, \ |
/* bfd_check_format. */ \ |
{ _bfd_dummy_target, coff_object_p, bfd_generic_archive_p, \ |
_bfd_dummy_target }, \ |
/* bfd_set_format. */ \ |
{ bfd_false, coff_mkobject, _bfd_generic_mkarchive, bfd_false }, \ |
/* bfd_write_contents. */ \ |
{ bfd_false, coff_write_object_contents, _bfd_write_archive_contents, \ |
bfd_false }, \ |
\ |
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), \ |
\ |
ALTERNATIVE, \ |
\ |
SWAP_TABLE \ |
}; |