/* 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 /* SECTION Architectures BFD keeps one atom in a BFD describing the architecture of the data attached to the BFD: a pointer to a <>. 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 <>. 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_v8plus 2 .#define bfd_mach_sparc_v8plusa 3 {* with ultrasparc add'ns *} .#define bfd_mach_sparc_v9 4 .#define bfd_mach_sparc_v9a 5 {* with ultrasparc add'ns *} .{* Nonzero if MACH has the v9 instruction set. *} .#define bfd_mach_sparc_v9_p(mach) ((mach) != bfd_mach_sparc) . 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 <> 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 <> 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 <> is an item of <> 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 <> 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!"; }