1 /* BFD library support routines for architectures.
2 Copyright (C) 1990, 91, 92, 93, 94, 95, 1996 Free Software Foundation, Inc.
3 Hacked by John Gilmore and Steve Chamberlain of Cygnus Support.
5 This file is part of BFD, the Binary File Descriptor library.
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 2 of the License, or
10 (at your option) any later version.
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with this program; if not, write to the Free Software
19 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
31 BFD keeps one atom in a BFD describing the
32 architecture of the data attached to the BFD: a pointer to a
33 <<bfd_arch_info_type>>.
35 Pointers to structures can be requested independently of a BFD
36 so that an architecture's information can be interrogated
37 without access to an open BFD.
39 The architecture information is provided by each architecture package.
40 The set of default architectures is selected by the macro
41 <<SELECT_ARCHITECTURES>>. This is normally set up in the
42 @file{config/@var{target}.mt} file of your choice. If the name is not
43 defined, then all the architectures supported are included.
45 When BFD starts up, all the architectures are called with an
46 initialize method. It is up to the architecture back end to
47 insert as many items into the list of architectures as it wants to;
48 generally this would be one for each machine and one for the
49 default case (an item with a machine field of 0).
51 BFD's idea of an architecture is implemented in @file{archures.c}.
60 This enum gives the object file's CPU architecture, in a
61 global sense---i.e., what processor family does it belong to?
62 Another field indicates which processor within
63 the family is in use. The machine gives a number which
64 distinguishes different versions of the architecture,
65 containing, for example, 2 and 3 for Intel i960 KA and i960 KB,
66 and 68020 and 68030 for Motorola 68020 and 68030.
68 .enum bfd_architecture
70 . bfd_arch_unknown, {* File arch not known *}
71 . bfd_arch_obscure, {* Arch known, not one of these *}
72 . bfd_arch_m68k, {* Motorola 68xxx *}
73 . bfd_arch_vax, {* DEC Vax *}
74 . bfd_arch_i960, {* Intel 960 *}
75 . {* The order of the following is important.
76 . lower number indicates a machine type that
77 . only accepts a subset of the instructions
78 . available to machines with higher numbers.
79 . The exception is the "ca", which is
80 . incompatible with all other machines except
83 .#define bfd_mach_i960_core 1
84 .#define bfd_mach_i960_ka_sa 2
85 .#define bfd_mach_i960_kb_sb 3
86 .#define bfd_mach_i960_mc 4
87 .#define bfd_mach_i960_xa 5
88 .#define bfd_mach_i960_ca 6
89 .#define bfd_mach_i960_jx 7
90 .#define bfd_mach_i960_hx 8
92 . bfd_arch_a29k, {* AMD 29000 *}
93 . bfd_arch_sparc, {* SPARC *}
94 .#define bfd_mach_sparc 1
95 .{* The difference between v8plus and v9 is that v9 is a true 64 bit env. *}
96 .#define bfd_mach_sparc_sparclet 2
97 .#define bfd_mach_sparc_sparclite 3
98 .#define bfd_mach_sparc_v8plus 4
99 .#define bfd_mach_sparc_v8plusa 5 {* with ultrasparc add'ns *}
100 .#define bfd_mach_sparc_v9 6
101 .#define bfd_mach_sparc_v9a 7 {* with ultrasparc add'ns *}
102 .{* Nonzero if MACH has the v9 instruction set. *}
103 .#define bfd_mach_sparc_v9_p(mach) \
104 . ((mach) >= bfd_mach_sparc_v8plus && (mach) <= bfd_mach_sparc_v9a)
105 . bfd_arch_mips, {* MIPS Rxxxx *}
106 . bfd_arch_i386, {* Intel 386 *}
107 .#define bfd_mach_i386_i386 0
108 .#define bfd_mach_i386_i8086 1
109 . bfd_arch_we32k, {* AT&T WE32xxx *}
110 . bfd_arch_tahoe, {* CCI/Harris Tahoe *}
111 . bfd_arch_i860, {* Intel 860 *}
112 . bfd_arch_romp, {* IBM ROMP PC/RT *}
113 . bfd_arch_alliant, {* Alliant *}
114 . bfd_arch_convex, {* Convex *}
115 . bfd_arch_m88k, {* Motorola 88xxx *}
116 . bfd_arch_pyramid, {* Pyramid Technology *}
117 . bfd_arch_h8300, {* Hitachi H8/300 *}
118 .#define bfd_mach_h8300 1
119 .#define bfd_mach_h8300h 2
120 .#define bfd_mach_h8300s 3
121 . bfd_arch_powerpc, {* PowerPC *}
122 . bfd_arch_rs6000, {* IBM RS/6000 *}
123 . bfd_arch_hppa, {* HP PA RISC *}
124 . bfd_arch_z8k, {* Zilog Z8000 *}
125 .#define bfd_mach_z8001 1
126 .#define bfd_mach_z8002 2
127 . bfd_arch_h8500, {* Hitachi H8/500 *}
128 . bfd_arch_sh, {* Hitachi SH *}
129 . bfd_arch_alpha, {* Dec Alpha *}
130 . bfd_arch_arm, {* Advanced Risc Machines ARM *}
131 . bfd_arch_ns32k, {* National Semiconductors ns32000 *}
132 . bfd_arch_w65, {* WDC 65816 *}
133 . {* start-sanitize-arc *}
134 . bfd_arch_arc, {* Argonaut RISC Core *}
135 .#define bfd_mach_arc_base 0
136 .#define bfd_mach_arc_host 1
137 .#define bfd_mach_arc_graphics 2
138 .#define bfd_mach_arc_audio 3
139 . {* end-sanitize-arc *}
152 This structure contains information on architectures for use
156 .typedef struct bfd_arch_info
159 . int bits_per_address;
161 . enum bfd_architecture arch;
162 . unsigned long mach;
163 . const char *arch_name;
164 . const char *printable_name;
165 . unsigned int section_align_power;
166 . {* true if this is the default machine for the architecture *}
167 . boolean the_default;
168 . const struct bfd_arch_info * (*compatible)
169 . PARAMS ((const struct bfd_arch_info *a,
170 . const struct bfd_arch_info *b));
172 . boolean (*scan) PARAMS ((const struct bfd_arch_info *, const char *));
174 . const struct bfd_arch_info *next;
175 .} bfd_arch_info_type;
178 extern const bfd_arch_info_type bfd_a29k_arch;
179 extern const bfd_arch_info_type bfd_alpha_arch;
180 /* start-sanitize-arc */
181 extern const bfd_arch_info_type bfd_arc_arch;
182 /* end-sanitize-arc */
183 extern const bfd_arch_info_type bfd_arm_arch;
184 extern const bfd_arch_info_type bfd_h8300_arch;
185 extern const bfd_arch_info_type bfd_h8500_arch;
186 extern const bfd_arch_info_type bfd_hppa_arch;
187 extern const bfd_arch_info_type bfd_i386_arch;
188 extern const bfd_arch_info_type bfd_i860_arch;
189 extern const bfd_arch_info_type bfd_i960_arch;
190 extern const bfd_arch_info_type bfd_m68k_arch;
191 extern const bfd_arch_info_type bfd_m88k_arch;
192 extern const bfd_arch_info_type bfd_mips_arch;
193 extern const bfd_arch_info_type bfd_powerpc_arch;
194 extern const bfd_arch_info_type bfd_rs6000_arch;
195 extern const bfd_arch_info_type bfd_sh_arch;
196 extern const bfd_arch_info_type bfd_sparc_arch;
197 extern const bfd_arch_info_type bfd_vax_arch;
198 extern const bfd_arch_info_type bfd_we32k_arch;
199 extern const bfd_arch_info_type bfd_z8k_arch;
200 extern const bfd_arch_info_type bfd_ns32k_arch;
201 extern const bfd_arch_info_type bfd_w65_arch;
203 static const bfd_arch_info_type * const bfd_archures_list[] =
205 #ifdef SELECT_ARCHITECTURES
206 SELECT_ARCHITECTURES,
210 /* start-sanitize-arc */
212 /* end-sanitize-arc */
241 const char *bfd_printable_name(bfd *abfd);
244 Return a printable string representing the architecture and machine
245 from the pointer to the architecture info structure.
250 bfd_printable_name (abfd)
253 return abfd->arch_info->printable_name;
263 const bfd_arch_info_type *bfd_scan_arch(const char *string);
266 Figure out if BFD supports any cpu which could be described with
267 the name @var{string}. Return a pointer to an <<arch_info>>
268 structure if a machine is found, otherwise NULL.
272 const bfd_arch_info_type *
273 bfd_scan_arch (string)
276 const bfd_arch_info_type * const *app, *ap;
278 /* Look through all the installed architectures */
279 for (app = bfd_archures_list; *app != NULL; app++)
281 for (ap = *app; ap != NULL; ap = ap->next)
283 if (ap->scan (ap, string))
295 bfd_arch_get_compatible
298 const bfd_arch_info_type *bfd_arch_get_compatible(
303 Determine whether two BFDs'
304 architectures and machine types are compatible. Calculates
305 the lowest common denominator between the two architectures
306 and machine types implied by the BFDs and returns a pointer to
307 an <<arch_info>> structure describing the compatible machine.
310 const bfd_arch_info_type *
311 bfd_arch_get_compatible (abfd, bbfd)
315 /* If either architecture is unknown, then all we can do is assume
316 the user knows what he's doing. */
317 if (abfd->arch_info->arch == bfd_arch_unknown)
318 return bbfd->arch_info;
319 if (bbfd->arch_info->arch == bfd_arch_unknown)
320 return abfd->arch_info;
322 /* Otherwise architecture-specific code has to decide. */
323 return abfd->arch_info->compatible (abfd->arch_info, bbfd->arch_info);
329 bfd_default_arch_struct
332 The <<bfd_default_arch_struct>> is an item of
333 <<bfd_arch_info_type>> which has been initialized to a fairly
334 generic state. A BFD starts life by pointing to this
335 structure, until the correct back end has determined the real
336 architecture of the file.
338 .extern const bfd_arch_info_type bfd_default_arch_struct;
342 const bfd_arch_info_type bfd_default_arch_struct =
344 32,32,8,bfd_arch_unknown,0,"unknown","unknown",2,true,
345 bfd_default_compatible,
355 void bfd_set_arch_info(bfd *abfd, const bfd_arch_info_type *arg);
358 Set the architecture info of @var{abfd} to @var{arg}.
362 bfd_set_arch_info (abfd, arg)
364 const bfd_arch_info_type *arg;
366 abfd->arch_info = arg;
371 bfd_default_set_arch_mach
374 boolean bfd_default_set_arch_mach(bfd *abfd,
375 enum bfd_architecture arch,
379 Set the architecture and machine type in BFD @var{abfd}
380 to @var{arch} and @var{mach}. Find the correct
381 pointer to a structure and insert it into the <<arch_info>>
386 bfd_default_set_arch_mach (abfd, arch, mach)
388 enum bfd_architecture arch;
391 const bfd_arch_info_type * const *app, *ap;
393 for (app = bfd_archures_list; *app != NULL; app++)
395 for (ap = *app; ap != NULL; ap = ap->next)
399 || (mach == 0 && ap->the_default)))
401 abfd->arch_info = ap;
407 abfd->arch_info = &bfd_default_arch_struct;
408 bfd_set_error (bfd_error_bad_value);
418 enum bfd_architecture bfd_get_arch(bfd *abfd);
421 Return the enumerated type which describes the BFD @var{abfd}'s
426 enum bfd_architecture
430 return abfd->arch_info->arch;
438 unsigned long bfd_get_mach(bfd *abfd);
441 Return the long type which describes the BFD @var{abfd}'s
449 return abfd->arch_info->mach;
454 bfd_arch_bits_per_byte
457 unsigned int bfd_arch_bits_per_byte(bfd *abfd);
460 Return the number of bits in one of the BFD @var{abfd}'s
461 architecture's bytes.
466 bfd_arch_bits_per_byte (abfd)
469 return abfd->arch_info->bits_per_byte;
474 bfd_arch_bits_per_address
477 unsigned int bfd_arch_bits_per_address(bfd *abfd);
480 Return the number of bits in one of the BFD @var{abfd}'s
481 architecture's addresses.
485 bfd_arch_bits_per_address (abfd)
488 return abfd->arch_info->bits_per_address;
494 bfd_default_compatible
497 const bfd_arch_info_type *bfd_default_compatible
498 (const bfd_arch_info_type *a,
499 const bfd_arch_info_type *b);
502 The default function for testing for compatibility.
505 const bfd_arch_info_type *
506 bfd_default_compatible (a,b)
507 const bfd_arch_info_type *a;
508 const bfd_arch_info_type *b;
510 if (a->arch != b->arch)
513 if (a->mach > b->mach)
516 if (b->mach > a->mach)
528 boolean bfd_default_scan(const struct bfd_arch_info *info, const char *string);
531 The default function for working out whether this is an
532 architecture hit and a machine hit.
536 bfd_default_scan (info, string)
537 const struct bfd_arch_info *info;
542 unsigned long number;
543 enum bfd_architecture arch;
545 /* First test for an exact match */
546 if (strcmp (string, info->printable_name) == 0)
549 /* See how much of the supplied string matches with the
550 architecture, eg the string m68k:68020 would match the 68k entry
551 up to the :, then we get left with the machine number */
553 for (ptr_src = string, ptr_tst = info->arch_name;
554 *ptr_src && *ptr_tst;
555 ptr_src++, ptr_tst++)
557 if (*ptr_src != *ptr_tst) break;
560 /* Chewed up as much of the architecture as will match, skip any
567 /* nothing more, then only keep this one if it is the default
568 machine for this architecture */
569 return info->the_default;
573 while (isdigit(*ptr_src))
575 number = number * 10 + *ptr_src - '0';
586 arch = bfd_arch_h8300;
590 arch = bfd_arch_h8500;
600 arch = bfd_arch_m68k;
607 arch = bfd_arch_i386;
611 arch = bfd_arch_a29k;
619 arch = bfd_arch_we32k;
624 arch = bfd_arch_i860;
628 arch = bfd_arch_i960;
635 arch = bfd_arch_mips;
639 arch = bfd_arch_rs6000;
646 if (arch != info->arch)
649 if (number != info->mach)
661 const bfd_arch_info_type * bfd_get_arch_info(bfd *abfd);
664 Return the architecture info struct in @var{abfd}.
667 const bfd_arch_info_type *
668 bfd_get_arch_info (abfd)
671 return abfd->arch_info;
680 const bfd_arch_info_type *bfd_lookup_arch
681 (enum bfd_architecture
683 unsigned long machine);
686 Look for the architecure info structure which matches the
687 arguments @var{arch} and @var{machine}. A machine of 0 matches the
688 machine/architecture structure which marks itself as the
692 const bfd_arch_info_type *
693 bfd_lookup_arch (arch, machine)
694 enum bfd_architecture arch;
695 unsigned long machine;
697 const bfd_arch_info_type * const *app, *ap;
699 for (app = bfd_archures_list; *app != NULL; app++)
701 for (ap = *app; ap != NULL; ap = ap->next)
704 && (ap->mach == machine
705 || (machine == 0 && ap->the_default)))
716 bfd_printable_arch_mach
719 const char *bfd_printable_arch_mach
720 (enum bfd_architecture arch, unsigned long machine);
723 Return a printable string representing the architecture and
726 This routine is depreciated.
730 bfd_printable_arch_mach (arch, machine)
731 enum bfd_architecture arch;
732 unsigned long machine;
734 const bfd_arch_info_type *ap = bfd_lookup_arch (arch, machine);
737 return ap->printable_name;