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- /* BFD library support routines for architectures.
- Copyright (C) 1990-1991 Free Software Foundation, Inc.
- Hacked by John Gilmore 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., 675 Mass Ave, Cambridge, MA 02139, USA. */
-
- /*doc*
- @section Architectures
- BFD's idea of an architecture is implimented in @code{archures.c}. BFD
- keeps two atoms in a bfd describing the architecture of the data
- attatched to the bfd, the @code{enum bfd_architecture arch} field and
- the @code{unsigned long machine} field.
- */
-
- /*proto* bfd_architecture
- This enum gives the object file's CPU
- architecture, in a global sense. E.g. what processor family does it
- belong to? There is another field, which indicates what processor
- within the family is in use. The machine gives a number which
- distingushes 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
-
- bfd_arch_a29k, {* AMD 29000 *}
- bfd_arch_sparc, {* SPARC *}
- bfd_arch_mips, {* MIPS Rxxxx *}
- bfd_arch_i386, {* Intel 386 *}
- bfd_arch_ns32k, {* National Semiconductor 32xxx *}
- bfd_arch_tahoe, {* CCI/Harris Tahoe *}
- bfd_arch_i860, {* Intel 860 *}
- bfd_arch_romp, {* IBM ROMP RS/6000 *}
- bfd_arch_alliant, {* Alliant *}
- bfd_arch_convex, {* Convex *}
- bfd_arch_m88k, {* Motorola 88xxx *}
- bfd_arch_pyramid, {* Pyramid Technology *}
- bfd_arch_h8_300, {* Hitachi H8/300 *}
- bfd_arch_last
- };
- *-
-
- stuff
-
- */
-
-
-
- /* $Id: archures.c,v 1.8 1991/07/31 16:57:26 gnu Exp $ */
-
- #include <sysdep.h>
- #include "bfd.h"
-
- static char *prt_num_mach ();
- static boolean scan_num_mach ();
- static char *prt_960_mach ();
- static boolean scan_960_mach ();
-
- struct arch_print {
- enum bfd_architecture arch;
- char *astr;
- char *(*mach_print)();
- boolean (*mach_scan)();
- } arch_print[] = {
-
- {bfd_arch_unknown, "unknown", prt_num_mach, scan_num_mach},
- {bfd_arch_obscure, "obscure", prt_num_mach, scan_num_mach},
- {bfd_arch_m68k, "m68k", prt_num_mach, scan_num_mach},
- {bfd_arch_vax, "vax", prt_num_mach, scan_num_mach},
- {bfd_arch_i960, "i960", prt_960_mach, scan_960_mach},
- {bfd_arch_a29k, "a29k", prt_num_mach, scan_num_mach},
- {bfd_arch_sparc, "sparc", prt_num_mach, scan_num_mach},
- {bfd_arch_mips, "mips", prt_num_mach, scan_num_mach},
- {bfd_arch_i386, "i386", prt_num_mach, scan_num_mach},
- {bfd_arch_ns32k, "ns32k", prt_num_mach, scan_num_mach},
- {bfd_arch_tahoe, "tahoe", prt_num_mach, scan_num_mach},
- {bfd_arch_i860, "i860", prt_num_mach, scan_num_mach},
- {bfd_arch_romp, "romp", prt_num_mach, scan_num_mach},
- {bfd_arch_alliant, "alliant", prt_num_mach, scan_num_mach},
- {bfd_arch_convex, "convex", prt_num_mach, scan_num_mach},
- {bfd_arch_m88k, "m88k", prt_num_mach, scan_num_mach},
- {bfd_arch_pyramid, "pyramid", prt_num_mach, scan_num_mach},
- {bfd_arch_h8_300, "H8/300", prt_num_mach, scan_num_mach},
- {bfd_arch_unknown, (char *)0, prt_num_mach, scan_num_mach},
- };
-
- /*proto* bfd_prinable_arch_mach
- Return a printable string representing the architecture and machine
- type. The result is only good until the next call to
- bfd_printable_arch_mach.
- *; PROTO(CONST char *,bfd_printable_arch_mach,
- (enum bfd_architecture arch, unsigned long machine));
- */
-
- CONST char *
- DEFUN(bfd_printable_arch_mach,(arch, machine),
- enum bfd_architecture arch AND
- unsigned long machine)
- {
- struct arch_print *ap;
-
- for (ap = arch_print; ap->astr; ap++) {
- if (ap->arch == arch) {
- if (machine == 0)
- return ap->astr;
- return (*ap->mach_print)(ap, machine);
- }
- }
- return "UNKNOWN!";
- }
-
- static char *
- prt_num_mach (ap, machine)
- struct arch_print *ap;
- unsigned long machine;
- {
- static char result[20];
-
- sprintf(result, "%s:%ld", ap->astr, (long) machine);
- return result;
- }
-
- /*proto*
- *i bfd_scan_arch_mach
- Scan a string and attempt to turn it into an archive and machine type combination.
- *; PROTO(boolean, bfd_scan_arch_mach,
- (CONST char *, enum bfd_architecture *, unsigned long *));
- */
-
- boolean
- DEFUN(bfd_scan_arch_mach,(string, archp, machinep),
- CONST char *string AND
- enum bfd_architecture *archp AND
- unsigned long *machinep)
- {
- struct arch_print *ap;
- int len;
-
- /* First look for an architecture, possibly followed by machtype. */
- for (ap = arch_print; ap->astr; ap++) {
- if (ap->astr[0] != string[0])
- continue;
- len = strlen (ap->astr);
- if (!strncmp (ap->astr, string, len)) {
- /* We found the architecture, now see about the machine type */
- if (archp)
- *archp = ap->arch;
- if (string[len] != '\0') {
- if (ap->mach_scan (string+len, ap, archp, machinep, 1))
- return true;
- }
- if (machinep)
- *machinep = 0;
- return true;
- }
- }
-
- /* Couldn't find an architecture -- try for just a machine type */
- for (ap = arch_print; ap->astr; ap++) {
- if (ap->mach_scan (string, ap, archp, machinep, 0))
- return true;
- }
-
- return false;
- }
-
- static boolean
- scan_num_mach (string, ap, archp, machinep, archspec)
- char *string;
- struct arch_print *ap;
- enum bfd_architecture *archp;
- unsigned long *machinep;
- int archspec;
- {
- enum bfd_architecture arch;
- unsigned long machine;
- char achar;
-
- if (archspec) {
-
- /* Architecture already specified, now go for machine type. */
- if (string[0] != ':')
- return false;
- /* We'll take any valid number that occupies the entire string */
- if (1 != sscanf (string+1, "%lu%c", &machine, &achar))
- return false;
- arch = ap->arch;
-
- } else {
-
- /* We couldn't identify an architecture prefix. Perhaps the entire
- thing is a machine type. Be a lot picker. */
- if (1 != sscanf (string, "%lu%c", &machine, &achar))
- return false;
- switch (machine) {
- case 68010:
- case 68020:
- case 68030:
- case 68040:
- case 68332:
- case 68050: arch = bfd_arch_m68k; break;
- case 68000: arch = bfd_arch_m68k; machine = 0; break;
-
- case 80960:
- case 960: arch = bfd_arch_i960; machine = 0; break;
-
- case 386:
- case 80386: arch = bfd_arch_i386; machine = 0; break;
- case 486: arch = bfd_arch_i386; break;
-
- case 29000: arch = bfd_arch_a29k; machine = 0; break;
-
- case 32016:
- case 32032:
- case 32132:
- case 32232:
- case 32332:
- case 32432:
- case 32532: arch = bfd_arch_ns32k; break;
- case 32000: arch = bfd_arch_ns32k; machine = 0; break;
-
- case 860:
- case 80860: arch = bfd_arch_i860; machine = 0; break;
-
- default: return false;
- }
- }
-
- if (archp)
- *archp = arch;
- if (machinep)
- *machinep = machine;
- return true;
- }
-
- /* Intel 960 machine variants. */
-
- static char *
- prt_960_mach (ap, machine)
- struct arch_print *ap;
- unsigned long machine;
- {
- static char result[20];
- char *str;
-
- switch (machine) {
- case bfd_mach_i960_core: str = "core"; break;
- case bfd_mach_i960_kb_sb: str = "kb"; break;
- case bfd_mach_i960_mc: str = "mc"; break;
- case bfd_mach_i960_xa: str = "xa"; break;
- case bfd_mach_i960_ca: str = "ca"; break;
- case bfd_mach_i960_ka_sa: str = "ka"; break;
- default:
- return prt_num_mach (ap, machine);
- }
- sprintf (result, "%s:%s", ap->astr, str);
- return result;
- }
-
- static boolean
- scan_960_mach (string, ap, archp, machinep, archspec)
- char *string;
- struct arch_print *ap;
- enum bfd_architecture *archp;
- unsigned long *machinep;
- int archspec;
- {
- unsigned long machine;
-
- if (!archspec)
- return false;
- if (string[0] != ':')
- return false;
- string++;
- if (string[0] == '\0')
- return false;
- if (string[0] == 'c' && string[1] == 'o' && string[2] == 'r' &&
- string[3] == 'e' && string[4] == '\0')
- machine = bfd_mach_i960_core;
- else if (string[1] == '\0' || string[2] != '\0') /* rest are 2-char */
- return false;
- else if (string[0] == 'k' && string[1] == 'b')
- machine = bfd_mach_i960_kb_sb;
- else if (string[0] == 's' && string[1] == 'b')
- machine = bfd_mach_i960_kb_sb;
- else if (string[0] == 'm' && string[1] == 'c')
- machine = bfd_mach_i960_mc;
- else if (string[0] == 'x' && string[1] == 'a')
- machine = bfd_mach_i960_xa;
- else if (string[0] == 'c' && string[1] == 'a')
- machine = bfd_mach_i960_ca;
- else if (string[0] == 'k' && string[1] == 'a')
- machine = bfd_mach_i960_ka_sa;
- else if (string[0] == 's' && string[1] == 'a')
- machine = bfd_mach_i960_ka_sa;
- else
- return false;
-
- if (archp)
- *archp = ap->arch;
- if (machinep)
- *machinep = machine;
- return true;
- }
-
-
-
- /*proto*
- *i bfd_arch_compatible
- This routine is used to determine whether two BFDs' architectures and machine types are
- compatible. It calculates the lowest common denominator between the
- two architectures and machine types implied by the bfds and sets the
- objects pointed at by @var{archp} and @var{machine} if non NULL.
-
- This routine returns @code{true} if the bfds are of compatible type,
- otherwise @code{false}.
- *; PROTO(boolean, bfd_arch_compatible,
- (bfd *abfd,
- bfd *bbfd,
- enum bfd_architecture *archp,
- unsigned long *machinep));
- *-*/
-
- boolean
- DEFUN(bfd_arch_compatible,(abfd, bbfd, archp, machinep),
- bfd *abfd AND
- bfd *bbfd AND
- enum bfd_architecture *archp AND
- unsigned long *machinep)
- {
- enum bfd_architecture archa, archb;
- unsigned long macha, machb;
- int pick_a;
-
- archa = bfd_get_architecture (abfd);
- archb = bfd_get_architecture (bbfd);
- macha = bfd_get_machine (abfd);
- machb = bfd_get_machine (bbfd);
-
- if (archb == bfd_arch_unknown)
- pick_a = 1;
- else if (archa == bfd_arch_unknown)
- pick_a = 0;
- else if (archa != archb)
- return false; /* Not compatible */
- else {
- /* Architectures are the same. Check machine types. */
- if (macha == machb) /* Same machine type */
- pick_a = 1;
- else if (machb == 0) /* B is default */
- pick_a = 1;
- else if (macha == 0) /* A is default */
- pick_a = 0;
- else switch (archa) {
- /* If particular machine types of one architecture are not
- compatible with each other, this is the place to put those tests
- (returning false if incompatible). */
-
- case bfd_arch_i960:
- /* The i960 has two distinct subspecies which may not interbreed:
- CORE CA
- CORE KA KB MC
- Any architecture on the same line is compatible, the one on
- the right is the least restrictive. */
- /* So, if either is a ca then the other must be a be core or ca */
- if (macha == bfd_mach_i960_ca) {
- if (machb != bfd_mach_i960_ca &&
- machb != bfd_mach_i960_core) {
- return false;
- }
- pick_a = 1;
- }
- else if (machb == bfd_mach_i960_ca) {
- if (macha != bfd_mach_i960_ca &&
- macha != bfd_mach_i960_core) {
- return false;
- }
- pick_a = 0;
- }
- else {
- /* This must be from the bottom row, so take the higest */
- pick_a = (macha > machb);
- }
- break;
-
- /* For these chips, as far as we care, "lower" numbers are included
- by "higher" numbers, e.g. merge 68010 and 68020 into 68020,
- 386 and 486 into 486, etc. This will need to change
- if&when we care about things like 68332. */
- case bfd_arch_m68k:
- case bfd_arch_ns32k:
- case bfd_arch_i386:
- pick_a = (macha > machb);
- break;
-
- /* By default, pick first file's type, for lack of something better. */
- default:
- pick_a = 1;
- }
- }
-
- /* Set result based on our pick */
- if (!pick_a) {
- archa = archb;
- macha = machb;
- }
- if (archp)
- *archp = archa;
- if (machinep)
- *machinep = macha;
-
- return true;
- }
-
-
- /*proto* bfd_set_arch_mach
- Set atch mach
- *+
- #define bfd_set_arch_mach(abfd, arch, mach) \
- BFD_SEND (abfd, _bfd_set_arch_mach,\
- (abfd, arch, mach))
- *-
- */
-