731 lines
16 KiB
C
731 lines
16 KiB
C
/* BFD library support routines for architectures.
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Copyright (C) 1990-1991 Free Software Foundation, Inc.
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Hacked by John Gilmore and Steve Chamberlain of Cygnus Support.
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This file is part of BFD, the Binary File Descriptor library.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
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/*
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SECTION
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Architectures
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BFD keeps one atom in a BFD describing the
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architecture of the data attached to the BFD: a pointer to a
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<<bfd_arch_info_type>>.
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Pointers to structures can be requested independently of a BFD
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so that an architecture's information can be interrogated
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without access to an open BFD.
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The architecture information is provided by each architecture package.
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The set of default architectures is selected by the macro
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<<SELECT_ARCHITECTURES>>. This is normally set up in the
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<<config/target.mt>> file of your choice. If the name is not
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defined, then all the architectures supported are included.
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When BFD starts up, all the architectures are called with an
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initialize method. It is up to the architecture back end to
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insert as many items into the list of architectures as it wants to;
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generally this would be one for each machine and one for the
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default case (an item with a machine field of 0).
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BFD's idea of an architecture is implemented in <<archures.c>>.
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*/
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/*
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SUBSECTION
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bfd_architecture
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DESCRIPTION
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This enum gives the object file's CPU architecture, in a
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global sense---i.e., what processor family does it belong to?
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Another field indicates which processor within
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the family is in use. The machine gives a number which
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distinguishes different versions of the architecture,
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containing, for example, 2 and 3 for Intel i960 KA and i960 KB,
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and 68020 and 68030 for Motorola 68020 and 68030.
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.enum bfd_architecture
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.{
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. bfd_arch_unknown, {* File arch not known *}
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. bfd_arch_obscure, {* Arch known, not one of these *}
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. bfd_arch_m68k, {* Motorola 68xxx *}
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. bfd_arch_vax, {* DEC Vax *}
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. bfd_arch_i960, {* Intel 960 *}
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. {* The order of the following is important.
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. lower number indicates a machine type that
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. only accepts a subset of the instructions
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. available to machines with higher numbers.
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. The exception is the "ca", which is
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. incompatible with all other machines except
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. "core". *}
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.
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.#define bfd_mach_i960_core 1
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.#define bfd_mach_i960_ka_sa 2
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.#define bfd_mach_i960_kb_sb 3
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.#define bfd_mach_i960_mc 4
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.#define bfd_mach_i960_xa 5
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.#define bfd_mach_i960_ca 6
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.
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. bfd_arch_a29k, {* AMD 29000 *}
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. bfd_arch_sparc, {* SPARC *}
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. bfd_arch_mips, {* MIPS Rxxxx *}
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. bfd_arch_i386, {* Intel 386 *}
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. bfd_arch_we32k, {* AT&T WE32xxx *}
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. bfd_arch_tahoe, {* CCI/Harris Tahoe *}
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. bfd_arch_i860, {* Intel 860 *}
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. bfd_arch_romp, {* IBM ROMP PC/RT *}
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. bfd_arch_alliant, {* Alliant *}
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. bfd_arch_convex, {* Convex *}
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. bfd_arch_m88k, {* Motorola 88xxx *}
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. bfd_arch_pyramid, {* Pyramid Technology *}
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. bfd_arch_h8300, {* Hitachi H8/300 *}
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.#define bfd_mach_h8300 1
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.#define bfd_mach_h8300h 2
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. bfd_arch_rs6000, {* IBM RS/6000 *}
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. bfd_arch_hppa, {* HP PA RISC *}
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. bfd_arch_z8k, {* Zilog Z8000 *}
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.#define bfd_mach_z8001 1
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.#define bfd_mach_z8002 2
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. bfd_arch_h8500, {* Hitachi H8/500 *}
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. bfd_arch_sh, {* Hitachi SH *}
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. bfd_arch_alpha, {* Dec Alpha *}
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. bfd_arch_last
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. };
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*/
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#include "bfd.h"
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#include "sysdep.h"
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#include "libbfd.h"
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/*
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SUBSECTION
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bfd_arch_info
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DESCRIPTION
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This structure contains information on architectures for use
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within BFD.
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.
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.typedef struct bfd_arch_info
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.{
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. int bits_per_word;
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. int bits_per_address;
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. int bits_per_byte;
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. enum bfd_architecture arch;
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. long mach;
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. char *arch_name;
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. CONST char *printable_name;
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. unsigned int section_align_power;
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. {* true if this is the default machine for the architecture *}
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. boolean the_default;
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. CONST struct bfd_arch_info * (*compatible)
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. PARAMS ((CONST struct bfd_arch_info *a,
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. CONST struct bfd_arch_info *b));
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.
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. boolean (*scan) PARAMS ((CONST struct bfd_arch_info *, CONST char *));
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. {* How to disassemble an instruction, producing a printable
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. representation on a specified stdio stream. This isn't
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. defined for most processors at present, because of the size
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. of the additional tables it would drag in, and because gdb
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. wants to use a different interface. *}
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. unsigned int (*disassemble) PARAMS ((bfd_vma addr, CONST char *data,
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. PTR stream));
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.
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. struct bfd_arch_info *next;
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.} bfd_arch_info_type;
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*/
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bfd_arch_info_type *bfd_arch_info_list;
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/*
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FUNCTION
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bfd_printable_name
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SYNOPSIS
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CONST char *bfd_printable_name(bfd *abfd);
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DESCRIPTION
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Return a printable string representing the architecture and machine
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from the pointer to the architecture info structure.
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*/
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CONST char *
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DEFUN(bfd_printable_name, (abfd),
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bfd *abfd)
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{
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return abfd->arch_info->printable_name;
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}
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/*
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FUNCTION
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bfd_scan_arch
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SYNOPSIS
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bfd_arch_info_type *bfd_scan_arch(CONST char *string);
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DESCRIPTION
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Figure out if BFD supports any cpu which could be described with
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the name @var{string}. Return a pointer to an <<arch_info>>
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structure if a machine is found, otherwise NULL.
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*/
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bfd_arch_info_type *
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DEFUN(bfd_scan_arch,(string),
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CONST char *string)
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{
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struct bfd_arch_info *ap;
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/* Look through all the installed architectures */
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for (ap = bfd_arch_info_list;
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ap != (bfd_arch_info_type *)NULL;
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ap = ap->next) {
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if (ap->scan(ap, string))
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return ap;
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}
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return (bfd_arch_info_type *)NULL;
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}
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/*
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FUNCTION
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bfd_arch_get_compatible
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SYNOPSIS
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CONST bfd_arch_info_type *bfd_arch_get_compatible(
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CONST bfd *abfd,
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CONST bfd *bbfd);
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DESCRIPTION
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Determine whether two BFDs'
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architectures and machine types are compatible. Calculates
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the lowest common denominator between the two architectures
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and machine types implied by the BFDs and returns a pointer to
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an <<arch_info>> structure describing the compatible machine.
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*/
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CONST bfd_arch_info_type *
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DEFUN(bfd_arch_get_compatible,(abfd, bbfd),
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CONST bfd *abfd AND
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CONST bfd *bbfd)
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{
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return abfd->arch_info->compatible(abfd->arch_info,bbfd->arch_info);
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}
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/*
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INTERNAL_DEFINITION
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bfd_default_arch_struct
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DESCRIPTION
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The <<bfd_default_arch_struct>> is an item of
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<<bfd_arch_info_type>> which has been initialized to a fairly
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generic state. A BFD starts life by pointing to this
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structure, until the correct back end has determined the real
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architecture of the file.
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.extern bfd_arch_info_type bfd_default_arch_struct;
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*/
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bfd_arch_info_type bfd_default_arch_struct =
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{
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32,32,8,bfd_arch_unknown,0,"unknown","unknown",2,true,
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bfd_default_compatible,
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bfd_default_scan,
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0,
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};
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/*
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FUNCTION
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bfd_set_arch_info
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SYNOPSIS
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void bfd_set_arch_info(bfd *abfd, bfd_arch_info_type *arg);
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DESCRIPTION
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Set the architecture info of @var{abfd} to @var{arg}.
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*/
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void DEFUN(bfd_set_arch_info,(abfd, arg),
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bfd *abfd AND
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bfd_arch_info_type *arg)
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{
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abfd->arch_info = arg;
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}
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/*
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INTERNAL_FUNCTION
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bfd_default_set_arch_mach
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SYNOPSIS
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boolean bfd_default_set_arch_mach(bfd *abfd,
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enum bfd_architecture arch,
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unsigned long mach);
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DESCRIPTION
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Set the architecture and machine type in BFD @var{abfd}
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to @var{arch} and @var{mach}. Find the correct
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pointer to a structure and insert it into the <<arch_info>>
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pointer.
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*/
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boolean DEFUN(bfd_default_set_arch_mach,(abfd, arch, mach),
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bfd *abfd AND
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enum bfd_architecture arch AND
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unsigned long mach)
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{
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static struct bfd_arch_info *old_ptr = &bfd_default_arch_struct;
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boolean found = false;
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/* run through the table to find the one we want, we keep a little
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cache to speed things up */
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if (old_ptr == 0 || arch != old_ptr->arch || mach != old_ptr->mach) {
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bfd_arch_info_type *ptr;
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old_ptr = (bfd_arch_info_type *)NULL;
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for (ptr = bfd_arch_info_list;
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ptr != (bfd_arch_info_type *)NULL;
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ptr= ptr->next) {
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if (ptr->arch == arch &&
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((ptr->mach == mach) || (ptr->the_default && mach == 0))) {
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old_ptr = ptr;
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found = true;
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break;
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}
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}
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if (found==false) {
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/*looked for it and it wasn't there, so put in the default */
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old_ptr = &bfd_default_arch_struct;
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bfd_error = bad_value;
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}
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}
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else {
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/* it was in the cache */
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found = true;
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}
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abfd->arch_info = old_ptr;
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return found;
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}
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/*
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FUNCTION
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bfd_get_arch
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SYNOPSIS
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enum bfd_architecture bfd_get_arch(bfd *abfd);
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DESCRIPTION
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Return the enumerated type which describes the BFD @var{abfd}'s
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architecture.
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*/
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enum bfd_architecture DEFUN(bfd_get_arch, (abfd), bfd *abfd)
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{
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return abfd->arch_info->arch;
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}
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/*
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FUNCTION
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bfd_get_mach
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SYNOPSIS
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unsigned long bfd_get_mach(bfd *abfd);
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DESCRIPTION
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Return the long type which describes the BFD @var{abfd}'s
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machine.
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*/
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unsigned long
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DEFUN(bfd_get_mach, (abfd), bfd *abfd)
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{
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return abfd->arch_info->mach;
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}
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/*
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FUNCTION
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bfd_arch_bits_per_byte
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SYNOPSIS
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unsigned int bfd_arch_bits_per_byte(bfd *abfd);
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DESCRIPTION
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Return the number of bits in one of the BFD @var{abfd}'s
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architecture's bytes.
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*/
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unsigned int DEFUN(bfd_arch_bits_per_byte, (abfd), bfd *abfd)
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{
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return abfd->arch_info->bits_per_byte;
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}
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/*
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FUNCTION
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bfd_arch_bits_per_address
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SYNOPSIS
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unsigned int bfd_arch_bits_per_address(bfd *abfd);
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DESCRIPTION
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Return the number of bits in one of the BFD @var{abfd}'s
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architecture's addresses.
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*/
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unsigned int DEFUN(bfd_arch_bits_per_address, (abfd), bfd *abfd)
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{
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return abfd->arch_info->bits_per_address;
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}
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extern void bfd_a29k_arch PARAMS ((void));
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extern void bfd_alpha_arch PARAMS ((void));
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extern void bfd_h8300_arch PARAMS ((void));
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extern void bfd_h8500_arch PARAMS ((void));
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extern void bfd_hppa_arch PARAMS ((void));
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extern void bfd_i386_arch PARAMS ((void));
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extern void bfd_i960_arch PARAMS ((void));
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extern void bfd_m68k_arch PARAMS ((void));
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extern void bfd_m88k_arch PARAMS ((void));
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extern void bfd_mips_arch PARAMS ((void));
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extern void bfd_rs6000_arch PARAMS ((void));
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extern void bfd_sh_arch PARAMS ((void));
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extern void bfd_sparc_arch PARAMS ((void));
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extern void bfd_vax_arch PARAMS ((void));
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extern void bfd_we32k_arch PARAMS ((void));
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extern void bfd_z8k_arch PARAMS ((void));
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static void (*archures_init_table[]) PARAMS ((void)) =
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{
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#ifdef SELECT_ARCHITECTURES
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SELECT_ARCHITECTURES,
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#else
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bfd_a29k_arch,
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bfd_alpha_arch,
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bfd_h8300_arch,
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bfd_h8500_arch,
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bfd_hppa_arch,
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bfd_i386_arch,
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bfd_i960_arch,
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bfd_m68k_arch,
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bfd_m88k_arch,
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bfd_mips_arch,
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bfd_rs6000_arch,
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bfd_sh_arch,
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bfd_sparc_arch,
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bfd_vax_arch,
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bfd_we32k_arch,
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bfd_z8k_arch,
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#endif
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0
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};
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/*
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INTERNAL_FUNCTION
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bfd_arch_init
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SYNOPSIS
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void bfd_arch_init(void);
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DESCRIPTION
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Initialize the architecture dispatch table by
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calling all installed architecture packages and getting them
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to poke around.
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*/
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void
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DEFUN_VOID(bfd_arch_init)
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{
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void (**ptable) PARAMS ((void));
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for (ptable = archures_init_table;
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*ptable ;
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ptable++)
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{
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(*ptable)();
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}
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}
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/*
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INTERNAL_FUNCTION
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bfd_arch_linkin
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SYNOPSIS
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void bfd_arch_linkin(bfd_arch_info_type *ptr);
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DESCRIPTION
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Link the architecture info structure @var{ptr} into the list.
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*/
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void DEFUN(bfd_arch_linkin,(ptr),
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bfd_arch_info_type *ptr)
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{
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ptr->next = bfd_arch_info_list;
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bfd_arch_info_list = ptr;
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}
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/*
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INTERNAL_FUNCTION
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bfd_default_compatible
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SYNOPSIS
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CONST bfd_arch_info_type *bfd_default_compatible
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(CONST bfd_arch_info_type *a,
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CONST bfd_arch_info_type *b);
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DESCRIPTION
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The default function for testing for compatibility.
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*/
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CONST bfd_arch_info_type *
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DEFUN(bfd_default_compatible,(a,b),
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CONST bfd_arch_info_type *a AND
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CONST bfd_arch_info_type *b)
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{
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if(a->arch != b->arch) return NULL;
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if (a->mach > b->mach) {
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return a;
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}
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if (b->mach > a->mach) {
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return b;
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}
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return a;
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}
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/*
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INTERNAL_FUNCTION
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bfd_default_scan
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SYNOPSIS
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boolean bfd_default_scan(CONST struct bfd_arch_info *info, CONST char *string);
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DESCRIPTION
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The default function for working out whether this is an
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architecture hit and a machine hit.
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*/
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boolean
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DEFUN(bfd_default_scan,(info, string),
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CONST struct bfd_arch_info *info AND
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CONST char *string)
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{
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CONST char *ptr_src;
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CONST char *ptr_tst;
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unsigned long number;
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enum bfd_architecture arch;
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/* First test for an exact match */
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if (strcmp(string, info->printable_name) == 0) return true;
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/* See how much of the supplied string matches with the
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architecture, eg the string m68k:68020 would match the 68k entry
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|
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 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
|
|
bfd_arch_info_type * bfd_get_arch_info(bfd *abfd);
|
|
|
|
DESCRIPTION
|
|
Return the architecture info struct in @var{abfd}.
|
|
*/
|
|
|
|
bfd_arch_info_type *
|
|
DEFUN(bfd_get_arch_info,(abfd),
|
|
bfd *abfd)
|
|
{
|
|
return abfd->arch_info;
|
|
}
|
|
|
|
|
|
/*
|
|
FUNCTION
|
|
bfd_lookup_arch
|
|
|
|
SYNOPSIS
|
|
bfd_arch_info_type *bfd_lookup_arch
|
|
(enum bfd_architecture
|
|
arch,
|
|
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.
|
|
*/
|
|
|
|
bfd_arch_info_type *
|
|
DEFUN(bfd_lookup_arch,(arch, machine),
|
|
enum bfd_architecture arch AND
|
|
long machine)
|
|
{
|
|
bfd_arch_info_type *ap;
|
|
bfd_check_init();
|
|
for (ap = bfd_arch_info_list;
|
|
ap != (bfd_arch_info_type *)NULL;
|
|
ap = ap->next) {
|
|
if (ap->arch == arch &&
|
|
((ap->mach == machine)
|
|
|| (ap->the_default && machine == 0))) {
|
|
return ap;
|
|
}
|
|
}
|
|
return (bfd_arch_info_type *)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 *
|
|
DEFUN(bfd_printable_arch_mach,(arch, machine),
|
|
enum bfd_architecture arch AND
|
|
unsigned long machine)
|
|
{
|
|
bfd_arch_info_type *ap = bfd_lookup_arch(arch, machine);
|
|
if(ap) return ap->printable_name;
|
|
return "UNKNOWN!";
|
|
}
|