BFD keeps one atom in a BFD describing the
architecture of the data attached to the BFD: a pointer to a
bfd_arch_info_type.
Pointers to structures can be requested independently of a BFD so that an architecture's information can be interrogated without access to an open BFD.
The architecture information is provided by each architecture package.
The set of default architectures is selected by the macro
SELECT_ARCHITECTURES. This is normally set up in the
`config/target.mt' file of your choice. If the name is not
defined, then all the architectures supported are included.
When BFD starts up, all the architectures are called with an initialize method. It is up to the architecture back end to insert as many items into the list of architectures as it wants to; generally this would be one for each machine and one for the default case (an item with a machine field of 0).
BFD's idea of an architecture is implemented in `archures.c'.
Description
This enum gives the object file's CPU architecture, in a
global sense--i.e., what processor family does it belong to?
Another field indicates which processor within
the family is in use. The machine gives a number which
distinguishes different versions of the architecture,
containing, for example, 2 and 3 for Intel i960 KA and i960 KB,
and 68020 and 68030 for Motorola 68020 and 68030.
enum bfd_architecture
{
bfd_arch_unknown, /* File arch not known */
bfd_arch_obscure, /* Arch known, not one of these */
bfd_arch_m68k, /* Motorola 68xxx */
#define bfd_mach_m68000 1
#define bfd_mach_m68008 2
#define bfd_mach_m68010 3
#define bfd_mach_m68020 4
#define bfd_mach_m68030 5
#define bfd_mach_m68040 6
#define bfd_mach_m68060 7
bfd_arch_vax, /* DEC Vax */
bfd_arch_i960, /* Intel 960 */
/* The order of the following is important.
lower number indicates a machine type that
only accepts a subset of the instructions
available to machines with higher numbers.
The exception is the "ca", which is
incompatible with all other machines except
"core". */
#define bfd_mach_i960_core 1
#define bfd_mach_i960_ka_sa 2
#define bfd_mach_i960_kb_sb 3
#define bfd_mach_i960_mc 4
#define bfd_mach_i960_xa 5
#define bfd_mach_i960_ca 6
#define bfd_mach_i960_jx 7
#define bfd_mach_i960_hx 8
bfd_arch_a29k, /* AMD 29000 */
bfd_arch_sparc, /* SPARC */
#define bfd_mach_sparc 1
/* The difference between v8plus and v9 is that v9 is a true 64 bit env. */
#define bfd_mach_sparc_sparclet 2
#define bfd_mach_sparc_sparclite 3
#define bfd_mach_sparc_v8plus 4
#define bfd_mach_sparc_v8plusa 5 /* with ultrasparc add'ns */
#define bfd_mach_sparc_v9 6
#define bfd_mach_sparc_v9a 7 /* with ultrasparc add'ns */
/* Nonzero if MACH has the v9 instruction set. */
#define bfd_mach_sparc_v9_p(mach) \
((mach) >= bfd_mach_sparc_v8plus && (mach) <= bfd_mach_sparc_v9a)
bfd_arch_mips, /* MIPS Rxxxx */
#define bfd_mach_mips3000 3000
#define bfd_mach_mips3900 3900
#define bfd_mach_mips4000 4000
#define bfd_mach_mips4010 4010
#define bfd_mach_mips4100 4100
#define bfd_mach_mips4300 4300
#define bfd_mach_mips4400 4400
#define bfd_mach_mips4600 4600
#define bfd_mach_mips4650 4650
#define bfd_mach_mips5000 5000
#define bfd_mach_mips6000 6000
#define bfd_mach_mips8000 8000
#define bfd_mach_mips10000 10000
#define bfd_mach_mips16 16
bfd_arch_i386, /* Intel 386 */
#define bfd_mach_i386_i386 0
#define bfd_mach_i386_i8086 1
bfd_arch_we32k, /* AT&T WE32xxx */
bfd_arch_tahoe, /* CCI/Harris Tahoe */
bfd_arch_i860, /* Intel 860 */
bfd_arch_romp, /* IBM ROMP PC/RT */
bfd_arch_alliant, /* Alliant */
bfd_arch_convex, /* Convex */
bfd_arch_m88k, /* Motorola 88xxx */
bfd_arch_pyramid, /* Pyramid Technology */
bfd_arch_h8300, /* Hitachi H8/300 */
#define bfd_mach_h8300 1
#define bfd_mach_h8300h 2
#define bfd_mach_h8300s 3
bfd_arch_powerpc, /* PowerPC */
bfd_arch_rs6000, /* IBM RS/6000 */
bfd_arch_hppa, /* HP PA RISC */
bfd_arch_d10v, /* Mitsubishi D10V */
bfd_arch_z8k, /* Zilog Z8000 */
#define bfd_mach_z8001 1
#define bfd_mach_z8002 2
bfd_arch_h8500, /* Hitachi H8/500 */
bfd_arch_sh, /* Hitachi SH */
#define bfd_mach_sh 0
#define bfd_mach_sh3 0x30
#define bfd_mach_sh3e 0x3e
#define bfd_mach_sh4 0x40
bfd_arch_alpha, /* Dec Alpha */
bfd_arch_arm, /* Advanced Risc Machines ARM */
#define bfd_mach_arm_2 1
#define bfd_mach_arm_2a 2
#define bfd_mach_arm_3 3
#define bfd_mach_arm_3M 4
#define bfd_mach_arm_4 5
#define bfd_mach_arm_4T 6
bfd_arch_ns32k, /* National Semiconductors ns32000 */
bfd_arch_w65, /* WDC 65816 */
bfd_arch_tic30, /* Texas Instruments TMS320C30 */
bfd_arch_v850, /* NEC V850 */
#define bfd_mach_v850 0
bfd_arch_arc, /* Argonaut RISC Core */
#define bfd_mach_arc_base 0
bfd_arch_m32r, /* Mitsubishi M32R/D */
#define bfd_mach_m32r 0 /* backwards compatibility */
bfd_arch_mn10200, /* Matsushita MN10200 */
bfd_arch_mn10300, /* Matsushita MN10300 */
bfd_arch_last
};
Description
This structure contains information on architectures for use
within BFD.
typedef struct bfd_arch_info
{
int bits_per_word;
int bits_per_address;
int bits_per_byte;
enum bfd_architecture arch;
unsigned long mach;
const char *arch_name;
const char *printable_name;
unsigned int section_align_power;
/* true if this is the default machine for the architecture */
boolean the_default;
const struct bfd_arch_info * (*compatible)
PARAMS ((const struct bfd_arch_info *a,
const struct bfd_arch_info *b));
boolean (*scan) PARAMS ((const struct bfd_arch_info *, const char *));
const struct bfd_arch_info *next;
} bfd_arch_info_type;
bfd_printable_nameSynopsis
const char *bfd_printable_name(bfd *abfd);
Description
Return a printable string representing the architecture and machine
from the pointer to the architecture info structure.
bfd_scan_archSynopsis
const bfd_arch_info_type *bfd_scan_arch(const char *string);
Description
Figure out if BFD supports any cpu which could be described with
the name string. Return a pointer to an arch_info
structure if a machine is found, otherwise NULL.
bfd_arch_listSynopsis
const char **bfd_arch_list(void);
Description
Return a freshly malloced NULL-terminated vector of the names
of all the valid BFD architectures. Do not modify the names.
bfd_arch_get_compatibleSynopsis
const bfd_arch_info_type *bfd_arch_get_compatible(
const bfd *abfd,
const bfd *bbfd);
Description
Determine whether two BFDs'
architectures and machine types are compatible. Calculates
the lowest common denominator between the two architectures
and machine types implied by the BFDs and returns a pointer to
an arch_info structure describing the compatible machine.
bfd_default_arch_struct
Description
The bfd_default_arch_struct is an item of
bfd_arch_info_type which has been initialized to a fairly
generic state. A BFD starts life by pointing to this
structure, until the correct back end has determined the real
architecture of the file.
extern const bfd_arch_info_type bfd_default_arch_struct;
bfd_set_arch_infoSynopsis
void bfd_set_arch_info(bfd *abfd, const bfd_arch_info_type *arg);
Description
Set the architecture info of abfd to arg.
bfd_default_set_arch_machSynopsis
boolean bfd_default_set_arch_mach(bfd *abfd,
enum bfd_architecture arch,
unsigned long mach);
Description
Set the architecture and machine type in BFD abfd
to arch and mach. Find the correct
pointer to a structure and insert it into the arch_info
pointer.
bfd_get_archSynopsis
enum bfd_architecture bfd_get_arch(bfd *abfd);
Description
Return the enumerated type which describes the BFD abfd's
architecture.
bfd_get_machSynopsis
unsigned long bfd_get_mach(bfd *abfd);
Description
Return the long type which describes the BFD abfd's
machine.
bfd_arch_bits_per_byteSynopsis
unsigned int bfd_arch_bits_per_byte(bfd *abfd);
Description
Return the number of bits in one of the BFD abfd's
architecture's bytes.
bfd_arch_bits_per_addressSynopsis
unsigned int bfd_arch_bits_per_address(bfd *abfd);
Description
Return the number of bits in one of the BFD abfd's
architecture's addresses.
bfd_default_compatibleSynopsis
const bfd_arch_info_type *bfd_default_compatible
(const bfd_arch_info_type *a,
const bfd_arch_info_type *b);
Description
The default function for testing for compatibility.
bfd_default_scanSynopsis
boolean bfd_default_scan(const struct bfd_arch_info *info, const char *string);
Description
The default function for working out whether this is an
architecture hit and a machine hit.
bfd_get_arch_infoSynopsis
const bfd_arch_info_type * bfd_get_arch_info(bfd *abfd);
Description
Return the architecture info struct in abfd.
bfd_lookup_archSynopsis
const bfd_arch_info_type *bfd_lookup_arch
(enum bfd_architecture
arch,
unsigned long machine);
Description
Look for the architecure info structure which matches the
arguments arch and machine. A machine of 0 matches the
machine/architecture structure which marks itself as the
default.
bfd_printable_arch_machSynopsis
const char *bfd_printable_arch_mach (enum bfd_architecture arch, unsigned long machine);
Description
Return a printable string representing the architecture and
machine type.
This routine is depreciated.
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