1 /* BFD library support routines for architectures.
2 Copyright (C) 1990, 91-95, 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 . {* start-sanitize-i960xl *}
90 .#define bfd_mach_i960_xl 7
91 . {* end-sanitize-i960xl *}
92 .#define bfd_mach_i960_hx 8
94 . bfd_arch_a29k, {* AMD 29000 *}
95 . bfd_arch_sparc, {* SPARC *}
96 .#define bfd_mach_sparc 1
97 .{* The difference between v8plus and v9 is that v9 is a true 64 bit env. *}
98 .#define bfd_mach_sparc_v8plus 2
99 .#define bfd_mach_sparc_v8plusa 3 {* with ultrasparc add'ns *}
100 .#define bfd_mach_sparc_v9 4
101 .#define bfd_mach_sparc_v9a 5 {* with ultrasparc add'ns *}
102 .{* Nonzero if MACH has the v9 instruction set. *}
103 .#define bfd_mach_sparc_v9_p(mach) ((mach) != bfd_mach_sparc)
104 . bfd_arch_mips, {* MIPS Rxxxx *}
105 . bfd_arch_i386, {* Intel 386 *}
106 . bfd_arch_we32k, {* AT&T WE32xxx *}
107 . bfd_arch_tahoe, {* CCI/Harris Tahoe *}
108 . bfd_arch_i860, {* Intel 860 *}
109 . bfd_arch_romp, {* IBM ROMP PC/RT *}
110 . bfd_arch_alliant, {* Alliant *}
111 . bfd_arch_convex, {* Convex *}
112 . bfd_arch_m88k, {* Motorola 88xxx *}
113 . bfd_arch_pyramid, {* Pyramid Technology *}
114 . bfd_arch_h8300, {* Hitachi H8/300 *}
115 .#define bfd_mach_h8300 1
116 .#define bfd_mach_h8300h 2
117 . bfd_arch_powerpc, {* PowerPC *}
118 . bfd_arch_rs6000, {* IBM RS/6000 *}
119 . bfd_arch_hppa, {* HP PA RISC *}
120 . bfd_arch_z8k, {* Zilog Z8000 *}
121 .#define bfd_mach_z8001 1
122 .#define bfd_mach_z8002 2
123 . bfd_arch_h8500, {* Hitachi H8/500 *}
124 . bfd_arch_sh, {* Hitachi SH *}
125 . bfd_arch_alpha, {* Dec Alpha *}
126 . bfd_arch_arm, {* Advanced Risc Machines ARM *}
127 . bfd_arch_ns32k, {* National Semiconductors ns32000 *}
128 . bfd_arch_w65, {* WDC 65816 *}
129 . {* start-sanitize-rce *}
130 . bfd_arch_rce, {* Motorola RCE *}
131 . {* end-sanitize-rce *}
132 . {* start-sanitize-arc *}
133 . bfd_arch_arc, {* Argonaut RISC Core *}
134 .#define bfd_mach_arc_base 0
135 .#define bfd_mach_arc_host 1
136 .#define bfd_mach_arc_graphics 2
137 .#define bfd_mach_arc_audio 3
138 . {* end-sanitize-arc *}
151 This structure contains information on architectures for use
155 .typedef struct bfd_arch_info
158 . int bits_per_address;
160 . enum bfd_architecture arch;
161 . unsigned long mach;
162 . const char *arch_name;
163 . const char *printable_name;
164 . unsigned int section_align_power;
165 . {* true if this is the default machine for the architecture *}
166 . boolean the_default;
167 . const struct bfd_arch_info * (*compatible)
168 . PARAMS ((const struct bfd_arch_info *a,
169 . const struct bfd_arch_info *b));
171 . boolean (*scan) PARAMS ((const struct bfd_arch_info *, const char *));
173 . const struct bfd_arch_info *next;
174 .} bfd_arch_info_type;
177 extern const bfd_arch_info_type bfd_a29k_arch;
178 extern const bfd_arch_info_type bfd_alpha_arch;
179 /* start-sanitize-arc */
180 extern const bfd_arch_info_type bfd_arc_arch;
181 /* end-sanitize-arc */
182 extern const bfd_arch_info_type bfd_arm_arch;
183 extern const bfd_arch_info_type bfd_h8300_arch;
184 extern const bfd_arch_info_type bfd_h8500_arch;
185 extern const bfd_arch_info_type bfd_hppa_arch;
186 extern const bfd_arch_info_type bfd_i386_arch;
187 extern const bfd_arch_info_type bfd_i860_arch;
188 extern const bfd_arch_info_type bfd_i960_arch;
189 extern const bfd_arch_info_type bfd_m68k_arch;
190 extern const bfd_arch_info_type bfd_m88k_arch;
191 extern const bfd_arch_info_type bfd_mips_arch;
192 extern const bfd_arch_info_type bfd_powerpc_arch;
193 extern const bfd_arch_info_type bfd_rs6000_arch;
194 extern const bfd_arch_info_type bfd_sh_arch;
195 /* start-sanitize-rce */
196 extern const bfd_arch_info_type bfd_rce_arch;
197 /* end-sanitize-rce */
198 extern const bfd_arch_info_type bfd_sparc_arch;
199 extern const bfd_arch_info_type bfd_vax_arch;
200 extern const bfd_arch_info_type bfd_we32k_arch;
201 extern const bfd_arch_info_type bfd_z8k_arch;
202 extern const bfd_arch_info_type bfd_ns32k_arch;
203 extern const bfd_arch_info_type bfd_w65_arch;
205 static const bfd_arch_info_type * const bfd_archures_list[] =
207 #ifdef SELECT_ARCHITECTURES
208 SELECT_ARCHITECTURES,
212 /* start-sanitize-arc */
214 /* end-sanitize-arc */
228 /* start-sanitize-rce */
230 /* end-sanitize-rce */
246 const char *bfd_printable_name(bfd *abfd);
249 Return a printable string representing the architecture and machine
250 from the pointer to the architecture info structure.
255 bfd_printable_name (abfd)
258 return abfd->arch_info->printable_name;
268 const bfd_arch_info_type *bfd_scan_arch(const char *string);
271 Figure out if BFD supports any cpu which could be described with
272 the name @var{string}. Return a pointer to an <<arch_info>>
273 structure if a machine is found, otherwise NULL.
277 const bfd_arch_info_type *
278 bfd_scan_arch (string)
281 const bfd_arch_info_type * const *app, *ap;
283 /* Look through all the installed architectures */
284 for (app = bfd_archures_list; *app != NULL; app++)
286 for (ap = *app; ap != NULL; ap = ap->next)
288 if (ap->scan (ap, string))
300 bfd_arch_get_compatible
303 const bfd_arch_info_type *bfd_arch_get_compatible(
308 Determine whether two BFDs'
309 architectures and machine types are compatible. Calculates
310 the lowest common denominator between the two architectures
311 and machine types implied by the BFDs and returns a pointer to
312 an <<arch_info>> structure describing the compatible machine.
315 const bfd_arch_info_type *
316 bfd_arch_get_compatible (abfd, bbfd)
320 /* If either architecture is unknown, then all we can do is assume
321 the user knows what he's doing. */
322 if (abfd->arch_info->arch == bfd_arch_unknown)
323 return bbfd->arch_info;
324 if (bbfd->arch_info->arch == bfd_arch_unknown)
325 return abfd->arch_info;
327 /* Otherwise architecture-specific code has to decide. */
328 return abfd->arch_info->compatible (abfd->arch_info, bbfd->arch_info);
334 bfd_default_arch_struct
337 The <<bfd_default_arch_struct>> is an item of
338 <<bfd_arch_info_type>> which has been initialized to a fairly
339 generic state. A BFD starts life by pointing to this
340 structure, until the correct back end has determined the real
341 architecture of the file.
343 .extern const bfd_arch_info_type bfd_default_arch_struct;
347 const bfd_arch_info_type bfd_default_arch_struct =
349 32,32,8,bfd_arch_unknown,0,"unknown","unknown",2,true,
350 bfd_default_compatible,
360 void bfd_set_arch_info(bfd *abfd, const bfd_arch_info_type *arg);
363 Set the architecture info of @var{abfd} to @var{arg}.
367 bfd_set_arch_info (abfd, arg)
369 const bfd_arch_info_type *arg;
371 abfd->arch_info = arg;
376 bfd_default_set_arch_mach
379 boolean bfd_default_set_arch_mach(bfd *abfd,
380 enum bfd_architecture arch,
384 Set the architecture and machine type in BFD @var{abfd}
385 to @var{arch} and @var{mach}. Find the correct
386 pointer to a structure and insert it into the <<arch_info>>
391 bfd_default_set_arch_mach (abfd, arch, mach)
393 enum bfd_architecture arch;
396 const bfd_arch_info_type * const *app, *ap;
398 for (app = bfd_archures_list; *app != NULL; app++)
400 for (ap = *app; ap != NULL; ap = ap->next)
404 || (mach == 0 && ap->the_default)))
406 abfd->arch_info = ap;
412 abfd->arch_info = &bfd_default_arch_struct;
413 bfd_set_error (bfd_error_bad_value);
423 enum bfd_architecture bfd_get_arch(bfd *abfd);
426 Return the enumerated type which describes the BFD @var{abfd}'s
431 enum bfd_architecture
435 return abfd->arch_info->arch;
443 unsigned long bfd_get_mach(bfd *abfd);
446 Return the long type which describes the BFD @var{abfd}'s
454 return abfd->arch_info->mach;
459 bfd_arch_bits_per_byte
462 unsigned int bfd_arch_bits_per_byte(bfd *abfd);
465 Return the number of bits in one of the BFD @var{abfd}'s
466 architecture's bytes.
471 bfd_arch_bits_per_byte (abfd)
474 return abfd->arch_info->bits_per_byte;
479 bfd_arch_bits_per_address
482 unsigned int bfd_arch_bits_per_address(bfd *abfd);
485 Return the number of bits in one of the BFD @var{abfd}'s
486 architecture's addresses.
490 bfd_arch_bits_per_address (abfd)
493 return abfd->arch_info->bits_per_address;
499 bfd_default_compatible
502 const bfd_arch_info_type *bfd_default_compatible
503 (const bfd_arch_info_type *a,
504 const bfd_arch_info_type *b);
507 The default function for testing for compatibility.
510 const bfd_arch_info_type *
511 bfd_default_compatible (a,b)
512 const bfd_arch_info_type *a;
513 const bfd_arch_info_type *b;
515 if (a->arch != b->arch)
518 if (a->mach > b->mach)
521 if (b->mach > a->mach)
533 boolean bfd_default_scan(const struct bfd_arch_info *info, const char *string);
536 The default function for working out whether this is an
537 architecture hit and a machine hit.
541 bfd_default_scan (info, string)
542 const struct bfd_arch_info *info;
547 unsigned long number;
548 enum bfd_architecture arch;
550 /* First test for an exact match */
551 if (strcmp (string, info->printable_name) == 0)
554 /* See how much of the supplied string matches with the
555 architecture, eg the string m68k:68020 would match the 68k entry
556 up to the :, then we get left with the machine number */
558 for (ptr_src = string, ptr_tst = info->arch_name;
559 *ptr_src && *ptr_tst;
560 ptr_src++, ptr_tst++)
562 if (*ptr_src != *ptr_tst) break;
565 /* Chewed up as much of the architecture as will match, skip any
572 /* nothing more, then only keep this one if it is the default
573 machine for this architecture */
574 return info->the_default;
578 while (isdigit(*ptr_src))
580 number = number * 10 + *ptr_src - '0';
591 arch = bfd_arch_h8300;
595 arch = bfd_arch_h8500;
605 arch = bfd_arch_m68k;
612 arch = bfd_arch_i386;
616 arch = bfd_arch_a29k;
624 arch = bfd_arch_we32k;
629 arch = bfd_arch_i860;
633 arch = bfd_arch_i960;
640 arch = bfd_arch_mips;
644 arch = bfd_arch_rs6000;
651 if (arch != info->arch)
654 if (number != info->mach)
666 const bfd_arch_info_type * bfd_get_arch_info(bfd *abfd);
669 Return the architecture info struct in @var{abfd}.
672 const bfd_arch_info_type *
673 bfd_get_arch_info (abfd)
676 return abfd->arch_info;
685 const bfd_arch_info_type *bfd_lookup_arch
686 (enum bfd_architecture
688 unsigned long machine);
691 Look for the architecure info structure which matches the
692 arguments @var{arch} and @var{machine}. A machine of 0 matches the
693 machine/architecture structure which marks itself as the
697 const bfd_arch_info_type *
698 bfd_lookup_arch (arch, machine)
699 enum bfd_architecture arch;
700 unsigned long machine;
702 const bfd_arch_info_type * const *app, *ap;
704 for (app = bfd_archures_list; *app != NULL; app++)
706 for (ap = *app; ap != NULL; ap = ap->next)
709 && (ap->mach == machine
710 || (machine == 0 && ap->the_default)))
721 bfd_printable_arch_mach
724 const char *bfd_printable_arch_mach
725 (enum bfd_architecture arch, unsigned long machine);
728 Return a printable string representing the architecture and
731 This routine is depreciated.
735 bfd_printable_arch_mach (arch, machine)
736 enum bfd_architecture arch;
737 unsigned long machine;
739 const bfd_arch_info_type *ap = bfd_lookup_arch (arch, machine);
742 return ap->printable_name;