@section coff backends
|
@section coff backends
|
BFD supports a number of different flavours of coff format.
|
BFD supports a number of different flavours of coff format.
|
The major differences between formats are the sizes and
|
The major differences between formats are the sizes and
|
alignments of fields in structures on disk, and the occasional
|
alignments of fields in structures on disk, and the occasional
|
extra field.
|
extra field.
|
|
|
Coff in all its varieties is implemented with a few common
|
Coff in all its varieties is implemented with a few common
|
files and a number of implementation specific files. For
|
files and a number of implementation specific files. For
|
example, The 88k bcs coff format is implemented in the file
|
example, The 88k bcs coff format is implemented in the file
|
@file{coff-m88k.c}. This file @code{#include}s
|
@file{coff-m88k.c}. This file @code{#include}s
|
@file{coff/m88k.h} which defines the external structure of the
|
@file{coff/m88k.h} which defines the external structure of the
|
coff format for the 88k, and @file{coff/internal.h} which
|
coff format for the 88k, and @file{coff/internal.h} which
|
defines the internal structure. @file{coff-m88k.c} also
|
defines the internal structure. @file{coff-m88k.c} also
|
defines the relocations used by the 88k format
|
defines the relocations used by the 88k format
|
@xref{Relocations}.
|
@xref{Relocations}.
|
|
|
The Intel i960 processor version of coff is implemented in
|
The Intel i960 processor version of coff is implemented in
|
@file{coff-i960.c}. This file has the same structure as
|
@file{coff-i960.c}. This file has the same structure as
|
@file{coff-m88k.c}, except that it includes @file{coff/i960.h}
|
@file{coff-m88k.c}, except that it includes @file{coff/i960.h}
|
rather than @file{coff-m88k.h}.
|
rather than @file{coff-m88k.h}.
|
|
|
@subsection Porting to a new version of coff
|
@subsection Porting to a new version of coff
|
The recommended method is to select from the existing
|
The recommended method is to select from the existing
|
implementations the version of coff which is most like the one
|
implementations the version of coff which is most like the one
|
you want to use. For example, we'll say that i386 coff is
|
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.
|
the one you select, and that your coff flavour is called foo.
|
Copy @file{i386coff.c} to @file{foocoff.c}, copy
|
Copy @file{i386coff.c} to @file{foocoff.c}, copy
|
@file{../include/coff/i386.h} to @file{../include/coff/foo.h},
|
@file{../include/coff/i386.h} to @file{../include/coff/foo.h},
|
and add the lines to @file{targets.c} and @file{Makefile.in}
|
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
|
so that your new back end is used. Alter the shapes of the
|
structures in @file{../include/coff/foo.h} so that they match
|
structures in @file{../include/coff/foo.h} so that they match
|
what you need. You will probably also have to add
|
what you need. You will probably also have to add
|
@code{#ifdef}s to the code in @file{coff/internal.h} and
|
@code{#ifdef}s to the code in @file{coff/internal.h} and
|
@file{coffcode.h} if your version of coff is too wild.
|
@file{coffcode.h} if your version of coff is too wild.
|
|
|
You can verify that your new BFD backend works quite simply by
|
You can verify that your new BFD backend works quite simply by
|
building @file{objdump} from the @file{binutils} directory,
|
building @file{objdump} from the @file{binutils} directory,
|
and making sure that its version of what's going on and your
|
and making sure that its version of what's going on and your
|
host system's idea (assuming it has the pretty standard coff
|
host system's idea (assuming it has the pretty standard coff
|
dump utility, usually called @code{att-dump} or just
|
dump utility, usually called @code{att-dump} or just
|
@code{dump}) are the same. Then clean up your code, and send
|
@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
|
what you've done to Cygnus. Then your stuff will be in the
|
next release, and you won't have to keep integrating it.
|
next release, and you won't have to keep integrating it.
|
|
|
@subsection How the coff backend works
|
@subsection How the coff backend works
|
|
|
|
|
@subsubsection File layout
|
@subsubsection File layout
|
The Coff backend is split into generic routines that are
|
The Coff backend is split into generic routines that are
|
applicable to any Coff target and routines that are specific
|
applicable to any Coff target and routines that are specific
|
to a particular target. The target-specific routines are
|
to a particular target. The target-specific routines are
|
further split into ones which are basically the same for all
|
further split into ones which are basically the same for all
|
Coff targets except that they use the external symbol format
|
Coff targets except that they use the external symbol format
|
or use different values for certain constants.
|
or use different values for certain constants.
|
|
|
The generic routines are in @file{coffgen.c}. These routines
|
The generic routines are in @file{coffgen.c}. These routines
|
work for any Coff target. They use some hooks into the target
|
work for any Coff target. They use some hooks into the target
|
specific code; the hooks are in a @code{bfd_coff_backend_data}
|
specific code; the hooks are in a @code{bfd_coff_backend_data}
|
structure, one of which exists for each target.
|
structure, one of which exists for each target.
|
|
|
The essentially similar target-specific routines are in
|
The essentially similar target-specific routines are in
|
@file{coffcode.h}. This header file includes executable C code.
|
@file{coffcode.h}. This header file includes executable C code.
|
The various Coff targets first include the appropriate Coff
|
The various Coff targets first include the appropriate Coff
|
header file, make any special defines that are needed, and
|
header file, make any special defines that are needed, and
|
then include @file{coffcode.h}.
|
then include @file{coffcode.h}.
|
|
|
Some of the Coff targets then also have additional routines in
|
Some of the Coff targets then also have additional routines in
|
the target source file itself.
|
the target source file itself.
|
|
|
For example, @file{coff-i960.c} includes
|
For example, @file{coff-i960.c} includes
|
@file{coff/internal.h} and @file{coff/i960.h}. It then
|
@file{coff/internal.h} and @file{coff/i960.h}. It then
|
defines a few constants, such as @code{I960}, and includes
|
defines a few constants, such as @code{I960}, and includes
|
@file{coffcode.h}. Since the i960 has complex relocation
|
@file{coffcode.h}. Since the i960 has complex relocation
|
types, @file{coff-i960.c} also includes some code to
|
types, @file{coff-i960.c} also includes some code to
|
manipulate the i960 relocs. This code is not in
|
manipulate the i960 relocs. This code is not in
|
@file{coffcode.h} because it would not be used by any other
|
@file{coffcode.h} because it would not be used by any other
|
target.
|
target.
|
|
|
@subsubsection Bit twiddling
|
@subsubsection Bit twiddling
|
Each flavour of coff supported in BFD has its own header file
|
Each flavour of coff supported in BFD has its own header file
|
describing the external layout of the structures. There is also
|
describing the external layout of the structures. There is also
|
an internal description of the coff layout, in
|
an internal description of the coff layout, in
|
@file{coff/internal.h}. A major function of the
|
@file{coff/internal.h}. A major function of the
|
coff backend is swapping the bytes and twiddling the bits to
|
coff backend is swapping the bytes and twiddling the bits to
|
translate the external form of the structures into the normal
|
translate the external form of the structures into the normal
|
internal form. This is all performed in the
|
internal form. This is all performed in the
|
@code{bfd_swap}_@i{thing}_@i{direction} routines. Some
|
@code{bfd_swap}_@i{thing}_@i{direction} routines. Some
|
elements are different sizes between different versions of
|
elements are different sizes between different versions of
|
coff; it is the duty of the coff version specific include file
|
coff; it is the duty of the coff version specific include file
|
to override the definitions of various packing routines in
|
to override the definitions of various packing routines in
|
@file{coffcode.h}. E.g., the size of line number entry in coff is
|
@file{coffcode.h}. E.g., the size of line number entry in coff is
|
sometimes 16 bits, and sometimes 32 bits. @code{#define}ing
|
sometimes 16 bits, and sometimes 32 bits. @code{#define}ing
|
@code{PUT_LNSZ_LNNO} and @code{GET_LNSZ_LNNO} will select the
|
@code{PUT_LNSZ_LNNO} and @code{GET_LNSZ_LNNO} will select the
|
correct one. No doubt, some day someone will find a version of
|
correct one. No doubt, some day someone will find a version of
|
coff which has a varying field size not catered to at the
|
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}.
|
moment. To port BFD, that person will have to add more @code{#defines}.
|
Three of the bit twiddling routines are exported to
|
Three of the bit twiddling routines are exported to
|
@code{gdb}; @code{coff_swap_aux_in}, @code{coff_swap_sym_in}
|
@code{gdb}; @code{coff_swap_aux_in}, @code{coff_swap_sym_in}
|
and @code{coff_swap_lineno_in}. @code{GDB} reads the symbol
|
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
|
table on its own, but uses BFD to fix things up. More of the
|
bit twiddlers are exported for @code{gas};
|
bit twiddlers are exported for @code{gas};
|
@code{coff_swap_aux_out}, @code{coff_swap_sym_out},
|
@code{coff_swap_aux_out}, @code{coff_swap_sym_out},
|
@code{coff_swap_lineno_out}, @code{coff_swap_reloc_out},
|
@code{coff_swap_lineno_out}, @code{coff_swap_reloc_out},
|
@code{coff_swap_filehdr_out}, @code{coff_swap_aouthdr_out},
|
@code{coff_swap_filehdr_out}, @code{coff_swap_aouthdr_out},
|
@code{coff_swap_scnhdr_out}. @code{Gas} currently keeps track
|
@code{coff_swap_scnhdr_out}. @code{Gas} currently keeps track
|
of all the symbol table and reloc drudgery itself, thereby
|
of all the symbol table and reloc drudgery itself, thereby
|
saving the internal BFD overhead, but uses BFD to swap things
|
saving the internal BFD overhead, but uses BFD to swap things
|
on the way out, making cross ports much safer. Doing so also
|
on the way out, making cross ports much safer. Doing so also
|
allows BFD (and thus the linker) to use the same header files
|
allows BFD (and thus the linker) to use the same header files
|
as @code{gas}, which makes one avenue to disaster disappear.
|
as @code{gas}, which makes one avenue to disaster disappear.
|
|
|
@subsubsection Symbol reading
|
@subsubsection Symbol reading
|
The simple canonical form for symbols used by BFD is not rich
|
The simple canonical form for symbols used by BFD is not rich
|
enough to keep all the information available in a coff symbol
|
enough to keep all the information available in a coff symbol
|
table. The back end gets around this problem by keeping the original
|
table. The back end gets around this problem by keeping the original
|
symbol table around, "behind the scenes".
|
symbol table around, "behind the scenes".
|
|
|
When a symbol table is requested (through a call to
|
When a symbol table is requested (through a call to
|
@code{bfd_canonicalize_symtab}), a request gets through to
|
@code{bfd_canonicalize_symtab}), a request gets through to
|
@code{coff_get_normalized_symtab}. This reads the symbol table from
|
@code{coff_get_normalized_symtab}. This reads the symbol table from
|
the coff file and swaps all the structures inside into the
|
the coff file and swaps all the structures inside into the
|
internal form. It also fixes up all the pointers in the table
|
internal form. It also fixes up all the pointers in the table
|
(represented in the file by offsets from the first symbol in
|
(represented in the file by offsets from the first symbol in
|
the table) into physical pointers to elements in the new
|
the table) into physical pointers to elements in the new
|
internal table. This involves some work since the meanings of
|
internal table. This involves some work since the meanings of
|
fields change depending upon context: a field that is a
|
fields change depending upon context: a field that is a
|
pointer to another structure in the symbol table at one moment
|
pointer to another structure in the symbol table at one moment
|
may be the size in bytes of a structure at the next. Another
|
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
|
pass is made over the table. All symbols which mark file names
|
(@code{C_FILE} symbols) are modified so that the internal
|
(@code{C_FILE} symbols) are modified so that the internal
|
string points to the value in the auxent (the real filename)
|
string points to the value in the auxent (the real filename)
|
rather than the normal text associated with the symbol
|
rather than the normal text associated with the symbol
|
(@code{".file"}).
|
(@code{".file"}).
|
|
|
At this time the symbol names are moved around. Coff stores
|
At this time the symbol names are moved around. Coff stores
|
all symbols less than nine characters long physically
|
all symbols less than nine characters long physically
|
within the symbol table; longer strings are kept at the end of
|
within the symbol table; longer strings are kept at the end of
|
the file in the string table. This pass moves all strings
|
the file in the string table. This pass moves all strings
|
into memory and replaces them with pointers to the strings.
|
into memory and replaces them with pointers to the strings.
|
|
|
The symbol table is massaged once again, this time to create
|
The symbol table is massaged once again, this time to create
|
the canonical table used by the BFD application. Each symbol
|
the canonical table used by the BFD application. Each symbol
|
is inspected in turn, and a decision made (using the
|
is inspected in turn, and a decision made (using the
|
@code{sclass} field) about the various flags to set in the
|
@code{sclass} field) about the various flags to set in the
|
@code{asymbol}. @xref{Symbols}. The generated canonical table
|
@code{asymbol}. @xref{Symbols}. The generated canonical table
|
shares strings with the hidden internal symbol table.
|
shares strings with the hidden internal symbol table.
|
|
|
Any linenumbers are read from the coff file too, and attached
|
Any linenumbers are read from the coff file too, and attached
|
to the symbols which own the functions the linenumbers belong to.
|
to the symbols which own the functions the linenumbers belong to.
|
|
|
@subsubsection Symbol writing
|
@subsubsection Symbol writing
|
Writing a symbol to a coff file which didn't come from a coff
|
Writing a symbol to a coff file which didn't come from a coff
|
file will lose any debugging information. The @code{asymbol}
|
file will lose any debugging information. The @code{asymbol}
|
structure remembers the BFD from which the symbol was taken, and on
|
structure remembers the BFD from which the symbol was taken, and on
|
output the back end makes sure that the same destination target as
|
output the back end makes sure that the same destination target as
|
source target is present.
|
source target is present.
|
|
|
When the symbols have come from a coff file then all the
|
When the symbols have come from a coff file then all the
|
debugging information is preserved.
|
debugging information is preserved.
|
|
|
Symbol tables are provided for writing to the back end in a
|
Symbol tables are provided for writing to the back end in a
|
vector of pointers to pointers. This allows applications like
|
vector of pointers to pointers. This allows applications like
|
the linker to accumulate and output large symbol tables
|
the linker to accumulate and output large symbol tables
|
without having to do too much byte copying.
|
without having to do too much byte copying.
|
|
|
This function runs through the provided symbol table and
|
This function runs through the provided symbol table and
|
patches each symbol marked as a file place holder
|
patches each symbol marked as a file place holder
|
(@code{C_FILE}) to point to the next file place holder in the
|
(@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
|
list. It also marks each @code{offset} field in the list with
|
the offset from the first symbol of the current symbol.
|
the offset from the first symbol of the current symbol.
|
|
|
Another function of this procedure is to turn the canonical
|
Another function of this procedure is to turn the canonical
|
value form of BFD into the form used by coff. Internally, BFD
|
value form of BFD into the form used by coff. Internally, BFD
|
expects symbol values to be offsets from a section base; so a
|
expects symbol values to be offsets from a section base; so a
|
symbol physically at 0x120, but in a section starting at
|
symbol physically at 0x120, but in a section starting at
|
0x100, would have the value 0x20. Coff expects symbols to
|
0x100, would have the value 0x20. Coff expects symbols to
|
contain their final value, so symbols have their values
|
contain their final value, so symbols have their values
|
changed at this point to reflect their sum with their owning
|
changed at this point to reflect their sum with their owning
|
section. This transformation uses the
|
section. This transformation uses the
|
@code{output_section} field of the @code{asymbol}'s
|
@code{output_section} field of the @code{asymbol}'s
|
@code{asection} @xref{Sections}.
|
@code{asection} @xref{Sections}.
|
|
|
@itemize @bullet
|
@itemize @bullet
|
|
|
@item
|
@item
|
@code{coff_mangle_symbols}
|
@code{coff_mangle_symbols}
|
@end itemize
|
@end itemize
|
This routine runs though the provided symbol table and uses
|
This routine runs though the provided symbol table and uses
|
the offsets generated by the previous pass and the pointers
|
the offsets generated by the previous pass and the pointers
|
generated when the symbol table was read in to create the
|
generated when the symbol table was read in to create the
|
structured hierarchy required by coff. It changes each pointer
|
structured hierarchy required by coff. It changes each pointer
|
to a symbol into the index into the symbol table of the asymbol.
|
to a symbol into the index into the symbol table of the asymbol.
|
|
|
@itemize @bullet
|
@itemize @bullet
|
|
|
@item
|
@item
|
@code{coff_write_symbols}
|
@code{coff_write_symbols}
|
@end itemize
|
@end itemize
|
This routine runs through the symbol table and patches up the
|
This routine runs through the symbol table and patches up the
|
symbols from their internal form into the coff way, calls the
|
symbols from their internal form into the coff way, calls the
|
bit twiddlers, and writes out the table to the file.
|
bit twiddlers, and writes out the table to the file.
|
|
|
@findex coff_symbol_type
|
@findex coff_symbol_type
|
@subsubsection @code{coff_symbol_type}
|
@subsubsection @code{coff_symbol_type}
|
@strong{Description}@*
|
@strong{Description}@*
|
The hidden information for an @code{asymbol} is described in a
|
The hidden information for an @code{asymbol} is described in a
|
@code{combined_entry_type}:
|
@code{combined_entry_type}:
|
|
|
|
|
@example
|
@example
|
|
|
typedef struct coff_ptr_struct
|
typedef struct coff_ptr_struct
|
@{
|
@{
|
/* Remembers the offset from the first symbol in the file for
|
/* Remembers the offset from the first symbol in the file for
|
this symbol. Generated by coff_renumber_symbols. */
|
this symbol. Generated by coff_renumber_symbols. */
|
unsigned int offset;
|
unsigned int offset;
|
|
|
/* Should the value of this symbol be renumbered. Used for
|
/* Should the value of this symbol be renumbered. Used for
|
XCOFF C_BSTAT symbols. Set by coff_slurp_symbol_table. */
|
XCOFF C_BSTAT symbols. Set by coff_slurp_symbol_table. */
|
unsigned int fix_value : 1;
|
unsigned int fix_value : 1;
|
|
|
/* Should the tag field of this symbol be renumbered.
|
/* Should the tag field of this symbol be renumbered.
|
Created by coff_pointerize_aux. */
|
Created by coff_pointerize_aux. */
|
unsigned int fix_tag : 1;
|
unsigned int fix_tag : 1;
|
|
|
/* Should the endidx field of this symbol be renumbered.
|
/* Should the endidx field of this symbol be renumbered.
|
Created by coff_pointerize_aux. */
|
Created by coff_pointerize_aux. */
|
unsigned int fix_end : 1;
|
unsigned int fix_end : 1;
|
|
|
/* Should the x_csect.x_scnlen field be renumbered.
|
/* Should the x_csect.x_scnlen field be renumbered.
|
Created by coff_pointerize_aux. */
|
Created by coff_pointerize_aux. */
|
unsigned int fix_scnlen : 1;
|
unsigned int fix_scnlen : 1;
|
|
|
/* Fix up an XCOFF C_BINCL/C_EINCL symbol. The value is the
|
/* 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. */
|
index into the line number entries. Set by coff_slurp_symbol_table. */
|
unsigned int fix_line : 1;
|
unsigned int fix_line : 1;
|
|
|
/* The container for the symbol structure as read and translated
|
/* The container for the symbol structure as read and translated
|
from the file. */
|
from the file. */
|
union
|
union
|
@{
|
@{
|
union internal_auxent auxent;
|
union internal_auxent auxent;
|
struct internal_syment syment;
|
struct internal_syment syment;
|
@} u;
|
@} u;
|
@} combined_entry_type;
|
@} combined_entry_type;
|
|
|
|
|
/* Each canonical asymbol really looks like this: */
|
/* Each canonical asymbol really looks like this: */
|
|
|
typedef struct coff_symbol_struct
|
typedef struct coff_symbol_struct
|
@{
|
@{
|
/* The actual symbol which the rest of BFD works with */
|
/* The actual symbol which the rest of BFD works with */
|
asymbol symbol;
|
asymbol symbol;
|
|
|
/* A pointer to the hidden information for this symbol */
|
/* A pointer to the hidden information for this symbol */
|
combined_entry_type *native;
|
combined_entry_type *native;
|
|
|
/* A pointer to the linenumber information for this symbol */
|
/* A pointer to the linenumber information for this symbol */
|
struct lineno_cache_entry *lineno;
|
struct lineno_cache_entry *lineno;
|
|
|
/* Have the line numbers been relocated yet ? */
|
/* Have the line numbers been relocated yet ? */
|
bfd_boolean done_lineno;
|
bfd_boolean done_lineno;
|
@} coff_symbol_type;
|
@} coff_symbol_type;
|
@end example
|
@end example
|
@findex bfd_coff_backend_data
|
@findex bfd_coff_backend_data
|
@subsubsection @code{bfd_coff_backend_data}
|
@subsubsection @code{bfd_coff_backend_data}
|
|
|
@example
|
@example
|
/* COFF symbol classifications. */
|
/* COFF symbol classifications. */
|
|
|
enum coff_symbol_classification
|
enum coff_symbol_classification
|
@{
|
@{
|
/* Global symbol. */
|
/* Global symbol. */
|
COFF_SYMBOL_GLOBAL,
|
COFF_SYMBOL_GLOBAL,
|
/* Common symbol. */
|
/* Common symbol. */
|
COFF_SYMBOL_COMMON,
|
COFF_SYMBOL_COMMON,
|
/* Undefined symbol. */
|
/* Undefined symbol. */
|
COFF_SYMBOL_UNDEFINED,
|
COFF_SYMBOL_UNDEFINED,
|
/* Local symbol. */
|
/* Local symbol. */
|
COFF_SYMBOL_LOCAL,
|
COFF_SYMBOL_LOCAL,
|
/* PE section symbol. */
|
/* PE section symbol. */
|
COFF_SYMBOL_PE_SECTION
|
COFF_SYMBOL_PE_SECTION
|
@};
|
@};
|
|
|
@end example
|
@end example
|
Special entry points for gdb to swap in coff symbol table parts:
|
Special entry points for gdb to swap in coff symbol table parts:
|
@example
|
@example
|
typedef struct
|
typedef struct
|
@{
|
@{
|
void (*_bfd_coff_swap_aux_in)
|
void (*_bfd_coff_swap_aux_in)
|
(bfd *, void *, int, int, int, int, void *);
|
(bfd *, void *, int, int, int, int, void *);
|
|
|
void (*_bfd_coff_swap_sym_in)
|
void (*_bfd_coff_swap_sym_in)
|
(bfd *, void *, void *);
|
(bfd *, void *, void *);
|
|
|
void (*_bfd_coff_swap_lineno_in)
|
void (*_bfd_coff_swap_lineno_in)
|
(bfd *, void *, void *);
|
(bfd *, void *, void *);
|
|
|
unsigned int (*_bfd_coff_swap_aux_out)
|
unsigned int (*_bfd_coff_swap_aux_out)
|
(bfd *, void *, int, int, int, int, void *);
|
(bfd *, void *, int, int, int, int, void *);
|
|
|
unsigned int (*_bfd_coff_swap_sym_out)
|
unsigned int (*_bfd_coff_swap_sym_out)
|
(bfd *, void *, void *);
|
(bfd *, void *, void *);
|
|
|
unsigned int (*_bfd_coff_swap_lineno_out)
|
unsigned int (*_bfd_coff_swap_lineno_out)
|
(bfd *, void *, void *);
|
(bfd *, void *, void *);
|
|
|
unsigned int (*_bfd_coff_swap_reloc_out)
|
unsigned int (*_bfd_coff_swap_reloc_out)
|
(bfd *, void *, void *);
|
(bfd *, void *, void *);
|
|
|
unsigned int (*_bfd_coff_swap_filehdr_out)
|
unsigned int (*_bfd_coff_swap_filehdr_out)
|
(bfd *, void *, void *);
|
(bfd *, void *, void *);
|
|
|
unsigned int (*_bfd_coff_swap_aouthdr_out)
|
unsigned int (*_bfd_coff_swap_aouthdr_out)
|
(bfd *, void *, void *);
|
(bfd *, void *, void *);
|
|
|
unsigned int (*_bfd_coff_swap_scnhdr_out)
|
unsigned int (*_bfd_coff_swap_scnhdr_out)
|
(bfd *, void *, void *);
|
(bfd *, void *, void *);
|
|
|
unsigned int _bfd_filhsz;
|
unsigned int _bfd_filhsz;
|
unsigned int _bfd_aoutsz;
|
unsigned int _bfd_aoutsz;
|
unsigned int _bfd_scnhsz;
|
unsigned int _bfd_scnhsz;
|
unsigned int _bfd_symesz;
|
unsigned int _bfd_symesz;
|
unsigned int _bfd_auxesz;
|
unsigned int _bfd_auxesz;
|
unsigned int _bfd_relsz;
|
unsigned int _bfd_relsz;
|
unsigned int _bfd_linesz;
|
unsigned int _bfd_linesz;
|
unsigned int _bfd_filnmlen;
|
unsigned int _bfd_filnmlen;
|
bfd_boolean _bfd_coff_long_filenames;
|
bfd_boolean _bfd_coff_long_filenames;
|
bfd_boolean _bfd_coff_long_section_names;
|
bfd_boolean _bfd_coff_long_section_names;
|
unsigned int _bfd_coff_default_section_alignment_power;
|
unsigned int _bfd_coff_default_section_alignment_power;
|
bfd_boolean _bfd_coff_force_symnames_in_strings;
|
bfd_boolean _bfd_coff_force_symnames_in_strings;
|
unsigned int _bfd_coff_debug_string_prefix_length;
|
unsigned int _bfd_coff_debug_string_prefix_length;
|
|
|
void (*_bfd_coff_swap_filehdr_in)
|
void (*_bfd_coff_swap_filehdr_in)
|
(bfd *, void *, void *);
|
(bfd *, void *, void *);
|
|
|
void (*_bfd_coff_swap_aouthdr_in)
|
void (*_bfd_coff_swap_aouthdr_in)
|
(bfd *, void *, void *);
|
(bfd *, void *, void *);
|
|
|
void (*_bfd_coff_swap_scnhdr_in)
|
void (*_bfd_coff_swap_scnhdr_in)
|
(bfd *, void *, void *);
|
(bfd *, void *, void *);
|
|
|
void (*_bfd_coff_swap_reloc_in)
|
void (*_bfd_coff_swap_reloc_in)
|
(bfd *abfd, void *, void *);
|
(bfd *abfd, void *, void *);
|
|
|
bfd_boolean (*_bfd_coff_bad_format_hook)
|
bfd_boolean (*_bfd_coff_bad_format_hook)
|
(bfd *, void *);
|
(bfd *, void *);
|
|
|
bfd_boolean (*_bfd_coff_set_arch_mach_hook)
|
bfd_boolean (*_bfd_coff_set_arch_mach_hook)
|
(bfd *, void *);
|
(bfd *, void *);
|
|
|
void * (*_bfd_coff_mkobject_hook)
|
void * (*_bfd_coff_mkobject_hook)
|
(bfd *, void *, void *);
|
(bfd *, void *, void *);
|
|
|
bfd_boolean (*_bfd_styp_to_sec_flags_hook)
|
bfd_boolean (*_bfd_styp_to_sec_flags_hook)
|
(bfd *, void *, const char *, asection *, flagword *);
|
(bfd *, void *, const char *, asection *, flagword *);
|
|
|
void (*_bfd_set_alignment_hook)
|
void (*_bfd_set_alignment_hook)
|
(bfd *, asection *, void *);
|
(bfd *, asection *, void *);
|
|
|
bfd_boolean (*_bfd_coff_slurp_symbol_table)
|
bfd_boolean (*_bfd_coff_slurp_symbol_table)
|
(bfd *);
|
(bfd *);
|
|
|
bfd_boolean (*_bfd_coff_symname_in_debug)
|
bfd_boolean (*_bfd_coff_symname_in_debug)
|
(bfd *, struct internal_syment *);
|
(bfd *, struct internal_syment *);
|
|
|
bfd_boolean (*_bfd_coff_pointerize_aux_hook)
|
bfd_boolean (*_bfd_coff_pointerize_aux_hook)
|
(bfd *, combined_entry_type *, combined_entry_type *,
|
(bfd *, combined_entry_type *, combined_entry_type *,
|
unsigned int, combined_entry_type *);
|
unsigned int, combined_entry_type *);
|
|
|
bfd_boolean (*_bfd_coff_print_aux)
|
bfd_boolean (*_bfd_coff_print_aux)
|
(bfd *, FILE *, combined_entry_type *, combined_entry_type *,
|
(bfd *, FILE *, combined_entry_type *, combined_entry_type *,
|
combined_entry_type *, unsigned int);
|
combined_entry_type *, unsigned int);
|
|
|
void (*_bfd_coff_reloc16_extra_cases)
|
void (*_bfd_coff_reloc16_extra_cases)
|
(bfd *, struct bfd_link_info *, struct bfd_link_order *, arelent *,
|
(bfd *, struct bfd_link_info *, struct bfd_link_order *, arelent *,
|
bfd_byte *, unsigned int *, unsigned int *);
|
bfd_byte *, unsigned int *, unsigned int *);
|
|
|
int (*_bfd_coff_reloc16_estimate)
|
int (*_bfd_coff_reloc16_estimate)
|
(bfd *, asection *, arelent *, unsigned int,
|
(bfd *, asection *, arelent *, unsigned int,
|
struct bfd_link_info *);
|
struct bfd_link_info *);
|
|
|
enum coff_symbol_classification (*_bfd_coff_classify_symbol)
|
enum coff_symbol_classification (*_bfd_coff_classify_symbol)
|
(bfd *, struct internal_syment *);
|
(bfd *, struct internal_syment *);
|
|
|
bfd_boolean (*_bfd_coff_compute_section_file_positions)
|
bfd_boolean (*_bfd_coff_compute_section_file_positions)
|
(bfd *);
|
(bfd *);
|
|
|
bfd_boolean (*_bfd_coff_start_final_link)
|
bfd_boolean (*_bfd_coff_start_final_link)
|
(bfd *, struct bfd_link_info *);
|
(bfd *, struct bfd_link_info *);
|
|
|
bfd_boolean (*_bfd_coff_relocate_section)
|
bfd_boolean (*_bfd_coff_relocate_section)
|
(bfd *, struct bfd_link_info *, bfd *, asection *, bfd_byte *,
|
(bfd *, struct bfd_link_info *, bfd *, asection *, bfd_byte *,
|
struct internal_reloc *, struct internal_syment *, asection **);
|
struct internal_reloc *, struct internal_syment *, asection **);
|
|
|
reloc_howto_type *(*_bfd_coff_rtype_to_howto)
|
reloc_howto_type *(*_bfd_coff_rtype_to_howto)
|
(bfd *, asection *, struct internal_reloc *,
|
(bfd *, asection *, struct internal_reloc *,
|
struct coff_link_hash_entry *, struct internal_syment *,
|
struct coff_link_hash_entry *, struct internal_syment *,
|
bfd_vma *);
|
bfd_vma *);
|
|
|
bfd_boolean (*_bfd_coff_adjust_symndx)
|
bfd_boolean (*_bfd_coff_adjust_symndx)
|
(bfd *, struct bfd_link_info *, bfd *, asection *,
|
(bfd *, struct bfd_link_info *, bfd *, asection *,
|
struct internal_reloc *, bfd_boolean *);
|
struct internal_reloc *, bfd_boolean *);
|
|
|
bfd_boolean (*_bfd_coff_link_add_one_symbol)
|
bfd_boolean (*_bfd_coff_link_add_one_symbol)
|
(struct bfd_link_info *, bfd *, const char *, flagword,
|
(struct bfd_link_info *, bfd *, const char *, flagword,
|
asection *, bfd_vma, const char *, bfd_boolean, bfd_boolean,
|
asection *, bfd_vma, const char *, bfd_boolean, bfd_boolean,
|
struct bfd_link_hash_entry **);
|
struct bfd_link_hash_entry **);
|
|
|
bfd_boolean (*_bfd_coff_link_output_has_begun)
|
bfd_boolean (*_bfd_coff_link_output_has_begun)
|
(bfd *, struct coff_final_link_info *);
|
(bfd *, struct coff_final_link_info *);
|
|
|
bfd_boolean (*_bfd_coff_final_link_postscript)
|
bfd_boolean (*_bfd_coff_final_link_postscript)
|
(bfd *, struct coff_final_link_info *);
|
(bfd *, struct coff_final_link_info *);
|
|
|
@} bfd_coff_backend_data;
|
@} bfd_coff_backend_data;
|
|
|
#define coff_backend_info(abfd) \
|
#define coff_backend_info(abfd) \
|
((bfd_coff_backend_data *) (abfd)->xvec->backend_data)
|
((bfd_coff_backend_data *) (abfd)->xvec->backend_data)
|
|
|
#define bfd_coff_swap_aux_in(a,e,t,c,ind,num,i) \
|
#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))
|
((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) \
|
#define bfd_coff_swap_sym_in(a,e,i) \
|
((coff_backend_info (a)->_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) \
|
#define bfd_coff_swap_lineno_in(a,e,i) \
|
((coff_backend_info ( a)->_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) \
|
#define bfd_coff_swap_reloc_out(abfd, i, o) \
|
((coff_backend_info (abfd)->_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) \
|
#define bfd_coff_swap_lineno_out(abfd, i, o) \
|
((coff_backend_info (abfd)->_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) \
|
#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))
|
((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) \
|
#define bfd_coff_swap_sym_out(abfd, i,o) \
|
((coff_backend_info (abfd)->_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) \
|
#define bfd_coff_swap_scnhdr_out(abfd, i,o) \
|
((coff_backend_info (abfd)->_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) \
|
#define bfd_coff_swap_filehdr_out(abfd, i,o) \
|
((coff_backend_info (abfd)->_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) \
|
#define bfd_coff_swap_aouthdr_out(abfd, i,o) \
|
((coff_backend_info (abfd)->_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_filhsz(abfd) (coff_backend_info (abfd)->_bfd_filhsz)
|
#define bfd_coff_aoutsz(abfd) (coff_backend_info (abfd)->_bfd_aoutsz)
|
#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_scnhsz(abfd) (coff_backend_info (abfd)->_bfd_scnhsz)
|
#define bfd_coff_symesz(abfd) (coff_backend_info (abfd)->_bfd_symesz)
|
#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_auxesz(abfd) (coff_backend_info (abfd)->_bfd_auxesz)
|
#define bfd_coff_relsz(abfd) (coff_backend_info (abfd)->_bfd_relsz)
|
#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_linesz(abfd) (coff_backend_info (abfd)->_bfd_linesz)
|
#define bfd_coff_filnmlen(abfd) (coff_backend_info (abfd)->_bfd_filnmlen)
|
#define bfd_coff_filnmlen(abfd) (coff_backend_info (abfd)->_bfd_filnmlen)
|
#define bfd_coff_long_filenames(abfd) \
|
#define bfd_coff_long_filenames(abfd) \
|
(coff_backend_info (abfd)->_bfd_coff_long_filenames)
|
(coff_backend_info (abfd)->_bfd_coff_long_filenames)
|
#define bfd_coff_long_section_names(abfd) \
|
#define bfd_coff_long_section_names(abfd) \
|
(coff_backend_info (abfd)->_bfd_coff_long_section_names)
|
(coff_backend_info (abfd)->_bfd_coff_long_section_names)
|
#define bfd_coff_default_section_alignment_power(abfd) \
|
#define bfd_coff_default_section_alignment_power(abfd) \
|
(coff_backend_info (abfd)->_bfd_coff_default_section_alignment_power)
|
(coff_backend_info (abfd)->_bfd_coff_default_section_alignment_power)
|
#define bfd_coff_swap_filehdr_in(abfd, i,o) \
|
#define bfd_coff_swap_filehdr_in(abfd, i,o) \
|
((coff_backend_info (abfd)->_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) \
|
#define bfd_coff_swap_aouthdr_in(abfd, i,o) \
|
((coff_backend_info (abfd)->_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) \
|
#define bfd_coff_swap_scnhdr_in(abfd, i,o) \
|
((coff_backend_info (abfd)->_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) \
|
#define bfd_coff_swap_reloc_in(abfd, i, o) \
|
((coff_backend_info (abfd)->_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) \
|
#define bfd_coff_bad_format_hook(abfd, filehdr) \
|
((coff_backend_info (abfd)->_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)\
|
#define bfd_coff_set_arch_mach_hook(abfd, filehdr)\
|
((coff_backend_info (abfd)->_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)\
|
#define bfd_coff_mkobject_hook(abfd, filehdr, aouthdr)\
|
((coff_backend_info (abfd)->_bfd_coff_mkobject_hook)\
|
((coff_backend_info (abfd)->_bfd_coff_mkobject_hook)\
|
(abfd, filehdr, aouthdr))
|
(abfd, filehdr, aouthdr))
|
|
|
#define bfd_coff_styp_to_sec_flags_hook(abfd, scnhdr, name, section, flags_ptr)\
|
#define bfd_coff_styp_to_sec_flags_hook(abfd, scnhdr, name, section, flags_ptr)\
|
((coff_backend_info (abfd)->_bfd_styp_to_sec_flags_hook)\
|
((coff_backend_info (abfd)->_bfd_styp_to_sec_flags_hook)\
|
(abfd, scnhdr, name, section, flags_ptr))
|
(abfd, scnhdr, name, section, flags_ptr))
|
|
|
#define bfd_coff_set_alignment_hook(abfd, sec, scnhdr)\
|
#define bfd_coff_set_alignment_hook(abfd, sec, scnhdr)\
|
((coff_backend_info (abfd)->_bfd_set_alignment_hook) (abfd, sec, scnhdr))
|
((coff_backend_info (abfd)->_bfd_set_alignment_hook) (abfd, sec, scnhdr))
|
|
|
#define bfd_coff_slurp_symbol_table(abfd)\
|
#define bfd_coff_slurp_symbol_table(abfd)\
|
((coff_backend_info (abfd)->_bfd_coff_slurp_symbol_table) (abfd))
|
((coff_backend_info (abfd)->_bfd_coff_slurp_symbol_table) (abfd))
|
|
|
#define bfd_coff_symname_in_debug(abfd, sym)\
|
#define bfd_coff_symname_in_debug(abfd, sym)\
|
((coff_backend_info (abfd)->_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)\
|
#define bfd_coff_force_symnames_in_strings(abfd)\
|
(coff_backend_info (abfd)->_bfd_coff_force_symnames_in_strings)
|
(coff_backend_info (abfd)->_bfd_coff_force_symnames_in_strings)
|
|
|
#define bfd_coff_debug_string_prefix_length(abfd)\
|
#define bfd_coff_debug_string_prefix_length(abfd)\
|
(coff_backend_info (abfd)->_bfd_coff_debug_string_prefix_length)
|
(coff_backend_info (abfd)->_bfd_coff_debug_string_prefix_length)
|
|
|
#define bfd_coff_print_aux(abfd, file, base, symbol, aux, indaux)\
|
#define bfd_coff_print_aux(abfd, file, base, symbol, aux, indaux)\
|
((coff_backend_info (abfd)->_bfd_coff_print_aux)\
|
((coff_backend_info (abfd)->_bfd_coff_print_aux)\
|
(abfd, file, base, symbol, aux, indaux))
|
(abfd, file, base, symbol, aux, indaux))
|
|
|
#define bfd_coff_reloc16_extra_cases(abfd, link_info, link_order,\
|
#define bfd_coff_reloc16_extra_cases(abfd, link_info, link_order,\
|
reloc, data, src_ptr, dst_ptr)\
|
reloc, data, src_ptr, dst_ptr)\
|
((coff_backend_info (abfd)->_bfd_coff_reloc16_extra_cases)\
|
((coff_backend_info (abfd)->_bfd_coff_reloc16_extra_cases)\
|
(abfd, link_info, link_order, reloc, data, src_ptr, dst_ptr))
|
(abfd, link_info, link_order, reloc, data, src_ptr, dst_ptr))
|
|
|
#define bfd_coff_reloc16_estimate(abfd, section, reloc, shrink, link_info)\
|
#define bfd_coff_reloc16_estimate(abfd, section, reloc, shrink, link_info)\
|
((coff_backend_info (abfd)->_bfd_coff_reloc16_estimate)\
|
((coff_backend_info (abfd)->_bfd_coff_reloc16_estimate)\
|
(abfd, section, reloc, shrink, link_info))
|
(abfd, section, reloc, shrink, link_info))
|
|
|
#define bfd_coff_classify_symbol(abfd, sym)\
|
#define bfd_coff_classify_symbol(abfd, sym)\
|
((coff_backend_info (abfd)->_bfd_coff_classify_symbol)\
|
((coff_backend_info (abfd)->_bfd_coff_classify_symbol)\
|
(abfd, sym))
|
(abfd, sym))
|
|
|
#define bfd_coff_compute_section_file_positions(abfd)\
|
#define bfd_coff_compute_section_file_positions(abfd)\
|
((coff_backend_info (abfd)->_bfd_coff_compute_section_file_positions)\
|
((coff_backend_info (abfd)->_bfd_coff_compute_section_file_positions)\
|
(abfd))
|
(abfd))
|
|
|
#define bfd_coff_start_final_link(obfd, info)\
|
#define bfd_coff_start_final_link(obfd, info)\
|
((coff_backend_info (obfd)->_bfd_coff_start_final_link)\
|
((coff_backend_info (obfd)->_bfd_coff_start_final_link)\
|
(obfd, info))
|
(obfd, info))
|
#define bfd_coff_relocate_section(obfd,info,ibfd,o,con,rel,isyms,secs)\
|
#define bfd_coff_relocate_section(obfd,info,ibfd,o,con,rel,isyms,secs)\
|
((coff_backend_info (ibfd)->_bfd_coff_relocate_section)\
|
((coff_backend_info (ibfd)->_bfd_coff_relocate_section)\
|
(obfd, info, ibfd, o, con, rel, isyms, secs))
|
(obfd, info, ibfd, o, con, rel, isyms, secs))
|
#define bfd_coff_rtype_to_howto(abfd, sec, rel, h, sym, addendp)\
|
#define bfd_coff_rtype_to_howto(abfd, sec, rel, h, sym, addendp)\
|
((coff_backend_info (abfd)->_bfd_coff_rtype_to_howto)\
|
((coff_backend_info (abfd)->_bfd_coff_rtype_to_howto)\
|
(abfd, sec, rel, h, sym, addendp))
|
(abfd, sec, rel, h, sym, addendp))
|
#define bfd_coff_adjust_symndx(obfd, info, ibfd, sec, rel, adjustedp)\
|
#define bfd_coff_adjust_symndx(obfd, info, ibfd, sec, rel, adjustedp)\
|
((coff_backend_info (abfd)->_bfd_coff_adjust_symndx)\
|
((coff_backend_info (abfd)->_bfd_coff_adjust_symndx)\
|
(obfd, info, ibfd, sec, rel, adjustedp))
|
(obfd, info, ibfd, sec, rel, adjustedp))
|
#define bfd_coff_link_add_one_symbol(info, abfd, name, flags, section,\
|
#define bfd_coff_link_add_one_symbol(info, abfd, name, flags, section,\
|
value, string, cp, coll, hashp)\
|
value, string, cp, coll, hashp)\
|
((coff_backend_info (abfd)->_bfd_coff_link_add_one_symbol)\
|
((coff_backend_info (abfd)->_bfd_coff_link_add_one_symbol)\
|
(info, abfd, name, flags, section, value, string, cp, coll, hashp))
|
(info, abfd, name, flags, section, value, string, cp, coll, hashp))
|
|
|
#define bfd_coff_link_output_has_begun(a,p) \
|
#define bfd_coff_link_output_has_begun(a,p) \
|
((coff_backend_info (a)->_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) \
|
#define bfd_coff_final_link_postscript(a,p) \
|
((coff_backend_info (a)->_bfd_coff_final_link_postscript) (a, p))
|
((coff_backend_info (a)->_bfd_coff_final_link_postscript) (a, p))
|
|
|
@end example
|
@end example
|
@subsubsection Writing relocations
|
@subsubsection Writing relocations
|
To write relocations, the back end steps though the
|
To write relocations, the back end steps though the
|
canonical relocation table and create an
|
canonical relocation table and create an
|
@code{internal_reloc}. The symbol index to use is removed from
|
@code{internal_reloc}. The symbol index to use is removed from
|
the @code{offset} field in the symbol table supplied. The
|
the @code{offset} field in the symbol table supplied. The
|
address comes directly from the sum of the section base
|
address comes directly from the sum of the section base
|
address and the relocation offset; the type is dug directly
|
address and the relocation offset; the type is dug directly
|
from the howto field. Then the @code{internal_reloc} is
|
from the howto field. Then the @code{internal_reloc} is
|
swapped into the shape of an @code{external_reloc} and written
|
swapped into the shape of an @code{external_reloc} and written
|
out to disk.
|
out to disk.
|
|
|
@subsubsection Reading linenumbers
|
@subsubsection Reading linenumbers
|
Creating the linenumber table is done by reading in the entire
|
Creating the linenumber table is done by reading in the entire
|
coff linenumber table, and creating another table for internal use.
|
coff linenumber table, and creating another table for internal use.
|
|
|
A coff linenumber table is structured so that each function
|
A coff linenumber table is structured so that each function
|
is marked as having a line number of 0. Each line within the
|
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
|
function is an offset from the first line in the function. The
|
base of the line number information for the table is stored in
|
base of the line number information for the table is stored in
|
the symbol associated with the function.
|
the symbol associated with the function.
|
|
|
Note: The PE format uses line number 0 for a flag indicating a
|
Note: The PE format uses line number 0 for a flag indicating a
|
new source file.
|
new source file.
|
|
|
The information is copied from the external to the internal
|
The information is copied from the external to the internal
|
table, and each symbol which marks a function is marked by
|
table, and each symbol which marks a function is marked by
|
pointing its...
|
pointing its...
|
|
|
How does this work ?
|
How does this work ?
|
|
|
@subsubsection Reading relocations
|
@subsubsection Reading relocations
|
Coff relocations are easily transformed into the internal BFD form
|
Coff relocations are easily transformed into the internal BFD form
|
(@code{arelent}).
|
(@code{arelent}).
|
|
|
Reading a coff relocation table is done in the following stages:
|
Reading a coff relocation table is done in the following stages:
|
|
|
@itemize @bullet
|
@itemize @bullet
|
|
|
@item
|
@item
|
Read the entire coff relocation table into memory.
|
Read the entire coff relocation table into memory.
|
|
|
@item
|
@item
|
Process each relocation in turn; first swap it from the
|
Process each relocation in turn; first swap it from the
|
external to the internal form.
|
external to the internal form.
|
|
|
@item
|
@item
|
Turn the symbol referenced in the relocation's symbol index
|
Turn the symbol referenced in the relocation's symbol index
|
into a pointer into the canonical symbol table.
|
into a pointer into the canonical symbol table.
|
This table is the same as the one returned by a call to
|
This table is the same as the one returned by a call to
|
@code{bfd_canonicalize_symtab}. The back end will call that
|
@code{bfd_canonicalize_symtab}. The back end will call that
|
routine and save the result if a canonicalization hasn't been done.
|
routine and save the result if a canonicalization hasn't been done.
|
|
|
@item
|
@item
|
The reloc index is turned into a pointer to a howto
|
The reloc index is turned into a pointer to a howto
|
structure, in a back end specific way. For instance, the 386
|
structure, in a back end specific way. For instance, the 386
|
and 960 use the @code{r_type} to directly produce an index
|
and 960 use the @code{r_type} to directly produce an index
|
into a howto table vector; the 88k subtracts a number from the
|
into a howto table vector; the 88k subtracts a number from the
|
@code{r_type} field and creates an addend field.
|
@code{r_type} field and creates an addend field.
|
@end itemize
|
@end itemize
|
|
|
|
|
