home *** CD-ROM | disk | FTP | other *** search
- /* BFD library support routines for architectures.
- Copyright (C) 1990, 91, 92, 93, 94, 95, 1996 Free Software Foundation, Inc.
- Hacked by John Gilmore and Steve Chamberlain of 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 2 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
-
- #include "bfd.h"
- #include "sysdep.h"
- #include "libbfd.h"
- #include <ctype.h>
-
- /*
-
- SECTION
- Architectures
-
- 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
- @file{config/@var{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 @file{archures.c}.
- */
-
- /*
-
- SUBSECTION
- bfd_architecture
-
- 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 *}
- . 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 *}
- . bfd_arch_i386, {* Intel 386 *}
- . 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
- . bfd_arch_powerpc, {* PowerPC *}
- . bfd_arch_rs6000, {* IBM RS/6000 *}
- . bfd_arch_hppa, {* HP PA RISC *}
- . 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 *}
- . bfd_arch_alpha, {* Dec Alpha *}
- . bfd_arch_arm, {* Advanced Risc Machines ARM *}
- . bfd_arch_ns32k, {* National Semiconductors ns32000 *}
- . bfd_arch_w65, {* WDC 65816 *}
- . bfd_arch_last
- . };
-
-
- */
-
- /*
-
- SUBSECTION
- bfd_arch_info
-
- 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;
- */
-
- extern const bfd_arch_info_type bfd_a29k_arch;
- extern const bfd_arch_info_type bfd_alpha_arch;
- extern const bfd_arch_info_type bfd_arm_arch;
- extern const bfd_arch_info_type bfd_h8300_arch;
- extern const bfd_arch_info_type bfd_h8500_arch;
- extern const bfd_arch_info_type bfd_hppa_arch;
- extern const bfd_arch_info_type bfd_i386_arch;
- extern const bfd_arch_info_type bfd_i860_arch;
- extern const bfd_arch_info_type bfd_i960_arch;
- extern const bfd_arch_info_type bfd_m68k_arch;
- extern const bfd_arch_info_type bfd_m88k_arch;
- extern const bfd_arch_info_type bfd_mips_arch;
- extern const bfd_arch_info_type bfd_powerpc_arch;
- extern const bfd_arch_info_type bfd_rs6000_arch;
- extern const bfd_arch_info_type bfd_sh_arch;
- extern const bfd_arch_info_type bfd_sparc_arch;
- extern const bfd_arch_info_type bfd_vax_arch;
- extern const bfd_arch_info_type bfd_we32k_arch;
- extern const bfd_arch_info_type bfd_z8k_arch;
- extern const bfd_arch_info_type bfd_ns32k_arch;
- extern const bfd_arch_info_type bfd_w65_arch;
-
- static const bfd_arch_info_type * const bfd_archures_list[] =
- {
- #ifdef SELECT_ARCHITECTURES
- SELECT_ARCHITECTURES,
- #else
- &bfd_a29k_arch,
- &bfd_alpha_arch,
- &bfd_arm_arch,
- &bfd_h8300_arch,
- &bfd_h8500_arch,
- &bfd_hppa_arch,
- &bfd_i386_arch,
- &bfd_i860_arch,
- &bfd_i960_arch,
- &bfd_m68k_arch,
- &bfd_m88k_arch,
- &bfd_mips_arch,
- &bfd_powerpc_arch,
- &bfd_rs6000_arch,
- &bfd_sh_arch,
- &bfd_sparc_arch,
- &bfd_vax_arch,
- &bfd_we32k_arch,
- &bfd_z8k_arch,
- &bfd_ns32k_arch,
- &bfd_w65_arch,
- #endif
- 0
- };
-
- /*
- FUNCTION
- bfd_printable_name
-
- SYNOPSIS
- 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.
-
- */
-
- const char *
- bfd_printable_name (abfd)
- bfd *abfd;
- {
- return abfd->arch_info->printable_name;
- }
-
-
-
- /*
- FUNCTION
- bfd_scan_arch
-
- SYNOPSIS
- 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 @var{string}. Return a pointer to an <<arch_info>>
- structure if a machine is found, otherwise NULL.
-
- */
-
- const bfd_arch_info_type *
- bfd_scan_arch (string)
- const char *string;
- {
- const bfd_arch_info_type * const *app, *ap;
-
- /* Look through all the installed architectures */
- for (app = bfd_archures_list; *app != NULL; app++)
- {
- for (ap = *app; ap != NULL; ap = ap->next)
- {
- if (ap->scan (ap, string))
- return ap;
- }
- }
-
- return NULL;
- }
-
-
-
- /*
- FUNCTION
- bfd_arch_get_compatible
-
- SYNOPSIS
- 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.
- */
-
- const bfd_arch_info_type *
- bfd_arch_get_compatible (abfd, bbfd)
- const bfd *abfd;
- const bfd *bbfd;
- {
- /* If either architecture is unknown, then all we can do is assume
- the user knows what he's doing. */
- if (abfd->arch_info->arch == bfd_arch_unknown)
- return bbfd->arch_info;
- if (bbfd->arch_info->arch == bfd_arch_unknown)
- return abfd->arch_info;
-
- /* Otherwise architecture-specific code has to decide. */
- return abfd->arch_info->compatible (abfd->arch_info, bbfd->arch_info);
- }
-
-
- /*
- INTERNAL_DEFINITION
- 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;
-
- */
-
- const bfd_arch_info_type bfd_default_arch_struct =
- {
- 32,32,8,bfd_arch_unknown,0,"unknown","unknown",2,true,
- bfd_default_compatible,
- bfd_default_scan,
- 0,
- };
-
- /*
- FUNCTION
- bfd_set_arch_info
-
- SYNOPSIS
- void bfd_set_arch_info(bfd *abfd, const bfd_arch_info_type *arg);
-
- DESCRIPTION
- Set the architecture info of @var{abfd} to @var{arg}.
- */
-
- void
- bfd_set_arch_info (abfd, arg)
- bfd *abfd;
- const bfd_arch_info_type *arg;
- {
- abfd->arch_info = arg;
- }
-
- /*
- INTERNAL_FUNCTION
- bfd_default_set_arch_mach
-
- SYNOPSIS
- boolean bfd_default_set_arch_mach(bfd *abfd,
- enum bfd_architecture arch,
- unsigned long mach);
-
- DESCRIPTION
- Set the architecture and machine type in BFD @var{abfd}
- to @var{arch} and @var{mach}. Find the correct
- pointer to a structure and insert it into the <<arch_info>>
- pointer.
- */
-
- boolean
- bfd_default_set_arch_mach (abfd, arch, mach)
- bfd *abfd;
- enum bfd_architecture arch;
- unsigned long mach;
- {
- const bfd_arch_info_type * const *app, *ap;
-
- for (app = bfd_archures_list; *app != NULL; app++)
- {
- for (ap = *app; ap != NULL; ap = ap->next)
- {
- if (ap->arch == arch
- && (ap->mach == mach
- || (mach == 0 && ap->the_default)))
- {
- abfd->arch_info = ap;
- return true;
- }
- }
- }
-
- abfd->arch_info = &bfd_default_arch_struct;
- bfd_set_error (bfd_error_bad_value);
- return false;
- }
-
-
- /*
- FUNCTION
- bfd_get_arch
-
- SYNOPSIS
- enum bfd_architecture bfd_get_arch(bfd *abfd);
-
- DESCRIPTION
- Return the enumerated type which describes the BFD @var{abfd}'s
- architecture.
-
- */
-
- enum bfd_architecture
- bfd_get_arch (abfd)
- bfd *abfd;
- {
- return abfd->arch_info->arch;
- }
-
- /*
- FUNCTION
- bfd_get_mach
-
- SYNOPSIS
- unsigned long bfd_get_mach(bfd *abfd);
-
- DESCRIPTION
- Return the long type which describes the BFD @var{abfd}'s
- machine.
- */
-
- unsigned long
- bfd_get_mach (abfd)
- bfd *abfd;
- {
- return abfd->arch_info->mach;
- }
-
- /*
- FUNCTION
- bfd_arch_bits_per_byte
-
- SYNOPSIS
- unsigned int bfd_arch_bits_per_byte(bfd *abfd);
-
- DESCRIPTION
- Return the number of bits in one of the BFD @var{abfd}'s
- architecture's bytes.
-
- */
-
- unsigned int
- bfd_arch_bits_per_byte (abfd)
- bfd *abfd;
- {
- return abfd->arch_info->bits_per_byte;
- }
-
- /*
- FUNCTION
- bfd_arch_bits_per_address
-
- SYNOPSIS
- unsigned int bfd_arch_bits_per_address(bfd *abfd);
-
- DESCRIPTION
- Return the number of bits in one of the BFD @var{abfd}'s
- architecture's addresses.
- */
-
- unsigned int
- bfd_arch_bits_per_address (abfd)
- bfd *abfd;
- {
- return abfd->arch_info->bits_per_address;
- }
-
-
- /*
- INTERNAL_FUNCTION
- bfd_default_compatible
-
- SYNOPSIS
- 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.
- */
-
- const bfd_arch_info_type *
- bfd_default_compatible (a,b)
- const bfd_arch_info_type *a;
- const bfd_arch_info_type *b;
- {
- if (a->arch != b->arch)
- return NULL;
-
- if (a->mach > b->mach)
- return a;
-
- if (b->mach > a->mach)
- return b;
-
- return a;
- }
-
-
- /*
- INTERNAL_FUNCTION
- bfd_default_scan
-
- SYNOPSIS
- 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.
- */
-
- boolean
- bfd_default_scan (info, string)
- const struct bfd_arch_info *info;
- const char *string;
- {
- const char *ptr_src;
- const char *ptr_tst;
- unsigned long number;
- enum bfd_architecture arch;
-
- /* First test for an exact match */
- if (strcmp (string, info->printable_name) == 0)
- return true;
-
- /* See how much of the supplied string matches with the
- architecture, eg the string m68k:68020 would match the 68k entry
- up to the :, then we get left with the machine number */
-
- for (ptr_src = string, ptr_tst = info->arch_name;
- *ptr_src && *ptr_tst;
- ptr_src++, ptr_tst++)
- {
- if (*ptr_src != *ptr_tst) break;
- }
-
- /* Chewed up as much of the architecture as will match, skip any
- colons */
- if (*ptr_src == ':')
- ptr_src++;
-
- if (*ptr_src == 0)
- {
- /* nothing more, then only keep this one if it is the default
- machine for this architecture */
- return info->the_default;
- }
-
- number = 0;
- while (isdigit(*ptr_src))
- {
- number = number * 10 + *ptr_src - '0';
- ptr_src++;
- }
-
- switch (number)
- {
- case 65:
- arch = bfd_arch_w65;
- break;
-
- case 300:
- arch = bfd_arch_h8300;
- break;
-
- case 500:
- arch = bfd_arch_h8500;
- break;
-
- case 68010:
- case 68020:
- case 68030:
- case 68040:
- case 68332:
- case 68050:
- case 68000:
- arch = bfd_arch_m68k;
- break;
-
- case 386:
- case 80386:
- case 486:
- case 80486:
- arch = bfd_arch_i386;
- break;
-
- case 29000:
- arch = bfd_arch_a29k;
- break;
-
- case 8000:
- arch = bfd_arch_z8k;
- break;
-
- case 32000:
- arch = bfd_arch_we32k;
- break;
-
- case 860:
- case 80860:
- arch = bfd_arch_i860;
- break;
- case 960:
- case 80960:
- arch = bfd_arch_i960;
- break;
-
- case 2000:
- case 3000:
- case 4000:
- case 4400:
- arch = bfd_arch_mips;
- break;
-
- case 6000:
- arch = bfd_arch_rs6000;
- break;
-
- default:
- return false;
- }
-
- if (arch != info->arch)
- return false;
-
- if (number != info->mach)
- return false;
-
- return true;
- }
-
-
- /*
- FUNCTION
- bfd_get_arch_info
-
- SYNOPSIS
- const bfd_arch_info_type * bfd_get_arch_info(bfd *abfd);
-
- DESCRIPTION
- Return the architecture info struct in @var{abfd}.
- */
-
- const bfd_arch_info_type *
- bfd_get_arch_info (abfd)
- bfd *abfd;
- {
- return abfd->arch_info;
- }
-
-
- /*
- FUNCTION
- bfd_lookup_arch
-
- SYNOPSIS
- 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 @var{arch} and @var{machine}. A machine of 0 matches the
- machine/architecture structure which marks itself as the
- default.
- */
-
- const bfd_arch_info_type *
- bfd_lookup_arch (arch, machine)
- enum bfd_architecture arch;
- unsigned long machine;
- {
- const bfd_arch_info_type * const *app, *ap;
-
- for (app = bfd_archures_list; *app != NULL; app++)
- {
- for (ap = *app; ap != NULL; ap = ap->next)
- {
- if (ap->arch == arch
- && (ap->mach == machine
- || (machine == 0 && ap->the_default)))
- return ap;
- }
- }
-
- return NULL;
- }
-
-
- /*
- FUNCTION
- bfd_printable_arch_mach
-
- SYNOPSIS
- 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.
- */
-
- const char *
- bfd_printable_arch_mach (arch, machine)
- enum bfd_architecture arch;
- unsigned long machine;
- {
- const bfd_arch_info_type *ap = bfd_lookup_arch (arch, machine);
-
- if (ap)
- return ap->printable_name;
- return "UNKNOWN!";
- }
-