1 /*
2 * Copyright (c) 2008, 2020, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * The Universal Permissive License (UPL), Version 1.0
6 *
7 * Subject to the condition set forth below, permission is hereby granted to
8 * any person obtaining a copy of this software, associated documentation
9 * and/or data (collectively the "Software"), free of charge and under any
10 * and all copyright rights in the Software, and any and all patent rights
11 * owned or freely licensable by each licensor hereunder covering either (i)
12 * the unmodified Software as contributed to or provided by such licensor,
13 * or (ii) the Larger Works (as defined below), to deal in both
14 *
15 * (a) the Software, and
16 *
17 * (b) any piece of software and/or hardware listed in the lrgrwrks.txt file
18 * if one is included with the Software (each a "Larger Work" to which the
19 * Software is contributed by such licensors),
20 *
21 * without restriction, including without limitation the rights to copy,
22 * create derivative works of, display, perform, and distribute the Software
23 * and make, use, sell, offer for sale, import, export, have made, and have
24 * sold the Software and the Larger Work(s), and to sublicense the foregoing
25 * rights on either these or other terms.
26 *
27 * This license is subject to the following condition:
28 *
29 * The above copyright notice and either this complete permission notice or
30 * at a minimum a reference to the UPL must be included in all copies or
31 * substantial portions of the Software.
32 *
33 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
34 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
35 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
36 * NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
37 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
38 * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
39 * USE OR OTHER DEALINGS IN THE SOFTWARE.
40 *
41 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
42 * or visit www.oracle.com if you need additional information or have any
43 * questions.
44 *
45 */
46
47 /* hsdis.c -- dump a range of addresses as native instructions
48 This implements the plugin protocol required by the
49 HotSpot PrintAssembly option.
50 */
51
52 #include <config.h> /* required by bfd.h */
53 #include <errno.h>
54 #include <inttypes.h>
55 #include <string.h>
56
57 #include <libiberty.h>
58 #include <bfd.h>
59 #include <bfdver.h>
60 #include <dis-asm.h>
61
62 #include "hsdis.h"
63
64 #ifndef bool
65 #define bool int
66 #define true 1
67 #define false 0
68 #endif /*bool*/
69
70 /* short names for stuff in hsdis.h */
71 typedef decode_instructions_event_callback_ftype event_callback_t;
72 typedef decode_instructions_printf_callback_ftype printf_callback_t;
73
74 /* disassemble_info.application_data object */
75 struct hsdis_app_data {
76 /* virtual address of data */
77 uintptr_t start_va, end_va;
78 /* the instructions to be decoded */
79 unsigned char* buffer;
80 uintptr_t length;
81 event_callback_t event_callback; void* event_stream;
82 printf_callback_t printf_callback; void* printf_stream;
83 bool losing;
84 bool do_newline;
85
86 /* the architecture being disassembled */
87 const char* arch_name;
88 const bfd_arch_info_type* arch_info;
89
90 /* the disassembler we are going to use: */
91 disassembler_ftype dfn;
92 struct disassemble_info dinfo; /* the actual struct! */
93
94 char mach_option[64];
95 char insn_options[256];
96 };
97
98 static void* decode(struct hsdis_app_data* app_data, const char* options);
99
100 #define DECL_APP_DATA(dinfo) \
101 struct hsdis_app_data* app_data = (struct hsdis_app_data*) (dinfo)->application_data
102
103 #define DECL_EVENT_CALLBACK(app_data) \
104 event_callback_t event_callback = (app_data)->event_callback; \
105 void* event_stream = (app_data)->event_stream
106
107 #define DECL_PRINTF_CALLBACK(app_data) \
108 printf_callback_t printf_callback = (app_data)->printf_callback; \
109 void* printf_stream = (app_data)->printf_stream
110
111
112 static void print_help(struct hsdis_app_data* app_data,
113 const char* msg, const char* arg);
114 static void setup_app_data(struct hsdis_app_data* app_data,
115 const char* options);
116 static const char* format_insn_close(const char* close,
117 disassemble_info* dinfo,
118 char* buf, size_t bufsize);
119
120 void*
121 #ifdef DLL_ENTRY
122 DLL_ENTRY
123 #endif
decode_instructions_virtual(uintptr_t start_va,uintptr_t end_va,unsigned char * buffer,uintptr_t length,event_callback_t event_callback_arg,void * event_stream_arg,printf_callback_t printf_callback_arg,void * printf_stream_arg,const char * options,int newline)124 decode_instructions_virtual(uintptr_t start_va, uintptr_t end_va,
125 unsigned char* buffer, uintptr_t length,
126 event_callback_t event_callback_arg, void* event_stream_arg,
127 printf_callback_t printf_callback_arg, void* printf_stream_arg,
128 const char* options, int newline) {
129 struct hsdis_app_data app_data;
130 memset(&app_data, 0, sizeof(app_data));
131 app_data.start_va = start_va;
132 app_data.end_va = end_va;
133 app_data.buffer = buffer;
134 app_data.length = length;
135 app_data.event_callback = event_callback_arg;
136 app_data.event_stream = event_stream_arg;
137 app_data.printf_callback = printf_callback_arg;
138 app_data.printf_stream = printf_stream_arg;
139 app_data.do_newline = newline == 0 ? false : true;
140
141 return decode(&app_data, options);
142 }
143
144 /* This is the compatability interface for older version of hotspot */
145 void*
146 #ifdef DLL_ENTRY
147 DLL_ENTRY
148 #endif
decode_instructions(void * start_pv,void * end_pv,event_callback_t event_callback_arg,void * event_stream_arg,printf_callback_t printf_callback_arg,void * printf_stream_arg,const char * options)149 decode_instructions(void* start_pv, void* end_pv,
150 event_callback_t event_callback_arg, void* event_stream_arg,
151 printf_callback_t printf_callback_arg, void* printf_stream_arg,
152 const char* options) {
153 return decode_instructions_virtual((uintptr_t)start_pv,
154 (uintptr_t)end_pv,
155 (unsigned char*)start_pv,
156 (uintptr_t)end_pv - (uintptr_t)start_pv,
157 event_callback_arg,
158 event_stream_arg,
159 printf_callback_arg,
160 printf_stream_arg,
161 options, false);
162 }
163
decode(struct hsdis_app_data * app_data,const char * options)164 static void* decode(struct hsdis_app_data* app_data, const char* options) {
165 setup_app_data(app_data, options);
166 char buf[128];
167
168 {
169 /* now reload everything from app_data: */
170 DECL_EVENT_CALLBACK(app_data);
171 DECL_PRINTF_CALLBACK(app_data);
172 uintptr_t start = app_data->start_va;
173 uintptr_t end = app_data->end_va;
174 uintptr_t p = start;
175
176 (*event_callback)(event_stream, "insns", (void*)start);
177
178 (*event_callback)(event_stream, "mach name='%s'",
179 (void*) app_data->arch_info->printable_name);
180 if (app_data->dinfo.bytes_per_line != 0) {
181 (*event_callback)(event_stream, "format bytes-per-line='%p'/",
182 (void*)(intptr_t) app_data->dinfo.bytes_per_line);
183 }
184
185 while (p < end && !app_data->losing) {
186 (*event_callback)(event_stream, "insn", (void*) p);
187
188 /* reset certain state, so we can read it with confidence */
189 app_data->dinfo.insn_info_valid = 0;
190 app_data->dinfo.branch_delay_insns = 0;
191 app_data->dinfo.data_size = 0;
192 app_data->dinfo.insn_type = 0;
193
194 int size = (*app_data->dfn)((bfd_vma) p, &app_data->dinfo);
195
196 if (size > 0) p += size;
197 else app_data->losing = true;
198
199 if (!app_data->losing) {
200 const char* insn_close = format_insn_close("/insn", &app_data->dinfo,
201 buf, sizeof(buf));
202 (*event_callback)(event_stream, insn_close, (void*) p);
203
204 if (app_data->do_newline) {
205 /* follow each complete insn by a nice newline */
206 (*printf_callback)(printf_stream, "\n");
207 }
208 }
209 }
210
211 if (app_data->losing) (*event_callback)(event_stream, "/insns", (void*) p);
212 return (void*) p;
213 }
214 }
215
216 /* take the address of the function, for luck, and also test the typedef: */
217 const decode_func_vtype decode_func_virtual_address = &decode_instructions_virtual;
218 const decode_func_stype decode_func_address = &decode_instructions;
219
format_insn_close(const char * close,disassemble_info * dinfo,char * buf,size_t bufsize)220 static const char* format_insn_close(const char* close,
221 disassemble_info* dinfo,
222 char* buf, size_t bufsize) {
223 if (!dinfo->insn_info_valid)
224 return close;
225 enum dis_insn_type itype = dinfo->insn_type;
226 int dsize = dinfo->data_size, delays = dinfo->branch_delay_insns;
227 if ((itype == dis_nonbranch && (dsize | delays) == 0)
228 || (strlen(close) + 3*20 > bufsize))
229 return close;
230
231 const char* type = "unknown";
232 switch (itype) {
233 case dis_nonbranch: type = NULL; break;
234 case dis_branch: type = "branch"; break;
235 case dis_condbranch: type = "condbranch"; break;
236 case dis_jsr: type = "jsr"; break;
237 case dis_condjsr: type = "condjsr"; break;
238 case dis_dref: type = "dref"; break;
239 case dis_dref2: type = "dref2"; break;
240 case dis_noninsn: type = "noninsn"; break;
241 }
242
243 strcpy(buf, close);
244 char* p = buf;
245 if (type) sprintf(p += strlen(p), " type='%s'", type);
246 if (dsize) sprintf(p += strlen(p), " dsize='%d'", dsize);
247 if (delays) sprintf(p += strlen(p), " delay='%d'", delays);
248 return buf;
249 }
250
251 /* handler functions */
252
253 static int
hsdis_read_memory_func(bfd_vma memaddr,bfd_byte * myaddr,unsigned int length,struct disassemble_info * dinfo)254 hsdis_read_memory_func(bfd_vma memaddr,
255 bfd_byte* myaddr,
256 unsigned int length,
257 struct disassemble_info* dinfo) {
258 DECL_APP_DATA(dinfo);
259 /* convert the virtual address memaddr into an address within memory buffer */
260 uintptr_t offset = ((uintptr_t) memaddr) - app_data->start_va;
261 if (offset + length > app_data->length) {
262 /* read is out of bounds */
263 return EIO;
264 } else {
265 memcpy(myaddr, (bfd_byte*) (app_data->buffer + offset), length);
266 return 0;
267 }
268 }
269
270 static void
hsdis_print_address_func(bfd_vma vma,struct disassemble_info * dinfo)271 hsdis_print_address_func(bfd_vma vma, struct disassemble_info* dinfo) {
272 /* the actual value to print: */
273 void* addr_value = (void*) (uintptr_t) vma;
274 DECL_APP_DATA(dinfo);
275 DECL_EVENT_CALLBACK(app_data);
276
277 /* issue the event: */
278 void* result =
279 (*event_callback)(event_stream, "addr/", addr_value);
280 if (result == NULL) {
281 /* event declined */
282 generic_print_address(vma, dinfo);
283 }
284 }
285
286
287 /* configuration */
288
289 static void set_optional_callbacks(struct hsdis_app_data* app_data);
290 static void parse_caller_options(struct hsdis_app_data* app_data,
291 const char* caller_options);
292 static const char* native_arch_name();
293 static enum bfd_endian native_endian();
294 static const bfd_arch_info_type* find_arch_info(const char* arch_nane);
295 static bfd* get_native_bfd(const bfd_arch_info_type* arch_info,
296 /* to avoid malloc: */
297 bfd* empty_bfd, bfd_target* empty_xvec);
298 static void init_disassemble_info_from_bfd(struct disassemble_info* dinfo,
299 void *stream,
300 fprintf_ftype fprintf_func,
301 bfd* bfd,
302 char* disassembler_options);
303 static void parse_fake_insn(disassembler_ftype dfn,
304 struct disassemble_info* dinfo);
305
setup_app_data(struct hsdis_app_data * app_data,const char * caller_options)306 static void setup_app_data(struct hsdis_app_data* app_data,
307 const char* caller_options) {
308 /* Make reasonable defaults for null callbacks.
309 A non-null stream for a null callback is assumed to be a FILE* for output.
310 Events are rendered as XML.
311 */
312 set_optional_callbacks(app_data);
313
314 /* Look into caller_options for anything interesting. */
315 if (caller_options != NULL)
316 parse_caller_options(app_data, caller_options);
317
318 /* Discover which architecture we are going to disassemble. */
319 app_data->arch_name = &app_data->mach_option[0];
320 if (app_data->arch_name[0] == '\0')
321 app_data->arch_name = native_arch_name();
322 app_data->arch_info = find_arch_info(app_data->arch_name);
323
324 /* Make a fake bfd to hold the arch. and byteorder info. */
325 struct {
326 bfd_target empty_xvec;
327 bfd empty_bfd;
328 } buf;
329 bfd* native_bfd = get_native_bfd(app_data->arch_info,
330 /* to avoid malloc: */
331 &buf.empty_bfd, &buf.empty_xvec);
332 init_disassemble_info_from_bfd(&app_data->dinfo,
333 app_data->printf_stream,
334 app_data->printf_callback,
335 native_bfd,
336 /* On PowerPC we get warnings, if we pass empty options */
337 (caller_options == NULL) ? NULL : app_data->insn_options);
338
339 /* Finish linking together the various callback blocks. */
340 app_data->dinfo.application_data = (void*) app_data;
341 app_data->dfn = disassembler(bfd_get_arch(native_bfd),
342 bfd_big_endian(native_bfd),
343 bfd_get_mach(native_bfd),
344 native_bfd);
345 app_data->dinfo.print_address_func = hsdis_print_address_func;
346 app_data->dinfo.read_memory_func = hsdis_read_memory_func;
347
348 if (app_data->dfn == NULL) {
349 const char* bad = app_data->arch_name;
350 static bool complained;
351 if (bad == &app_data->mach_option[0])
352 print_help(app_data, "bad mach=%s", bad);
353 else if (!complained)
354 print_help(app_data, "bad native mach=%s; please port hsdis to this platform", bad);
355 complained = true;
356 /* must bail out */
357 app_data->losing = true;
358 return;
359 }
360
361 parse_fake_insn(app_data->dfn, &app_data->dinfo);
362 }
363
364
365 /* ignore all events, return a null */
null_event_callback(void * ignore_stream,const char * ignore_event,void * arg)366 static void* null_event_callback(void* ignore_stream, const char* ignore_event, void* arg) {
367 return NULL;
368 }
369
370 /* print all events as XML markup */
xml_event_callback(void * stream,const char * event,void * arg)371 static void* xml_event_callback(void* stream, const char* event, void* arg) {
372 FILE* fp = (FILE*) stream;
373 #define NS_PFX "dis:"
374 if (event[0] != '/') {
375 /* issue the tag, with or without a formatted argument */
376 fprintf(fp, "<"NS_PFX);
377 fprintf(fp, event, arg);
378 fprintf(fp, ">");
379 } else {
380 ++event; /* skip slash */
381 const char* argp = strchr(event, ' ');
382 if (argp == NULL) {
383 /* no arguments; just issue the closing tag */
384 fprintf(fp, "</"NS_PFX"%s>", event);
385 } else {
386 /* split out the closing attributes as <dis:foo_done attr='val'/> */
387 int event_prefix = (argp - event);
388 fprintf(fp, "<"NS_PFX"%.*s_done", event_prefix, event);
389 fprintf(fp, argp, arg);
390 fprintf(fp, "/></"NS_PFX"%.*s>", event_prefix, event);
391 }
392 }
393 return NULL;
394 }
395
set_optional_callbacks(struct hsdis_app_data * app_data)396 static void set_optional_callbacks(struct hsdis_app_data* app_data) {
397 if (app_data->printf_callback == NULL) {
398 int (*fprintf_callback)(FILE*, const char*, ...) = &fprintf;
399 FILE* fprintf_stream = stdout;
400 app_data->printf_callback = (printf_callback_t) fprintf_callback;
401 if (app_data->printf_stream == NULL)
402 app_data->printf_stream = (void*) fprintf_stream;
403 }
404 if (app_data->event_callback == NULL) {
405 if (app_data->event_stream == NULL)
406 app_data->event_callback = &null_event_callback;
407 else
408 app_data->event_callback = &xml_event_callback;
409 }
410
411 }
412
parse_caller_options(struct hsdis_app_data * app_data,const char * caller_options)413 static void parse_caller_options(struct hsdis_app_data* app_data, const char* caller_options) {
414 char* iop_base = app_data->insn_options;
415 char* iop_limit = iop_base + sizeof(app_data->insn_options) - 1;
416 char* iop = iop_base;
417 const char* p;
418 for (p = caller_options; p != NULL; ) {
419 const char* q = strchr(p, ',');
420 size_t plen = (q == NULL) ? strlen(p) : ((q++) - p);
421 if (plen == 4 && strncmp(p, "help", plen) == 0) {
422 print_help(app_data, NULL, NULL);
423 } else if (plen >= 5 && strncmp(p, "mach=", 5) == 0) {
424 char* mach_option = app_data->mach_option;
425 size_t mach_size = sizeof(app_data->mach_option);
426 mach_size -= 1; /*leave room for the null*/
427 if (plen > mach_size) plen = mach_size;
428 strncpy(mach_option, p, plen);
429 mach_option[plen] = '\0';
430 } else if (plen > 6 && strncmp(p, "hsdis-", 6) == 0) {
431 // do not pass these to the next level
432 } else {
433 /* just copy it; {i386,sparc}-dis.c might like to see it */
434 if (iop > iop_base && iop < iop_limit) (*iop++) = ',';
435 if (iop + plen > iop_limit)
436 plen = iop_limit - iop;
437 strncpy(iop, p, plen);
438 iop += plen;
439 }
440 p = q;
441 }
442 *iop = '\0';
443 }
444
print_help(struct hsdis_app_data * app_data,const char * msg,const char * arg)445 static void print_help(struct hsdis_app_data* app_data,
446 const char* msg, const char* arg) {
447 DECL_PRINTF_CALLBACK(app_data);
448 if (msg != NULL) {
449 (*printf_callback)(printf_stream, "hsdis: ");
450 (*printf_callback)(printf_stream, msg, arg);
451 (*printf_callback)(printf_stream, "\n");
452 }
453 (*printf_callback)(printf_stream, "hsdis output options:\n");
454 if (printf_callback == (printf_callback_t) &fprintf)
455 disassembler_usage((FILE*) printf_stream);
456 else
457 disassembler_usage(stderr); /* better than nothing */
458 (*printf_callback)(printf_stream, " mach=<arch> select disassembly mode\n");
459 #if defined(LIBARCH_i386) || defined(LIBARCH_amd64)
460 (*printf_callback)(printf_stream, " mach=i386 select 32-bit mode\n");
461 (*printf_callback)(printf_stream, " mach=x86-64 select 64-bit mode\n");
462 (*printf_callback)(printf_stream, " suffix always print instruction suffix\n");
463 #endif
464 (*printf_callback)(printf_stream, " help print this message\n");
465 }
466
467
468 /* low-level bfd and arch stuff that binutils doesn't do for us */
469
find_arch_info(const char * arch_name)470 static const bfd_arch_info_type* find_arch_info(const char* arch_name) {
471 const bfd_arch_info_type* arch_info = bfd_scan_arch(arch_name);
472 if (arch_info == NULL) {
473 extern const bfd_arch_info_type bfd_default_arch_struct;
474 arch_info = &bfd_default_arch_struct;
475 }
476 return arch_info;
477 }
478
native_arch_name()479 static const char* native_arch_name() {
480 const char* res = NULL;
481 #ifdef LIBARCH_i386
482 res = "i386";
483 #endif
484 #ifdef LIBARCH_amd64
485 res = "i386:x86-64";
486 #endif
487 #if defined(LIBARCH_ppc64) || defined(LIBARCH_ppc64le)
488 res = "powerpc:common64";
489 #endif
490 #ifdef LIBARCH_arm
491 res = "arm";
492 #endif
493 #ifdef LIBARCH_aarch64
494 res = "aarch64";
495 #endif
496 #ifdef LIBARCH_s390x
497 res = "s390:64-bit";
498 #endif
499 if (res == NULL)
500 res = "architecture not set in Makefile!";
501 return res;
502 }
503
native_endian()504 static enum bfd_endian native_endian() {
505 int32_t endian_test = 'x';
506 if (*(const char*) &endian_test == 'x')
507 return BFD_ENDIAN_LITTLE;
508 else
509 return BFD_ENDIAN_BIG;
510 }
511
get_native_bfd(const bfd_arch_info_type * arch_info,bfd * empty_bfd,bfd_target * empty_xvec)512 static bfd* get_native_bfd(const bfd_arch_info_type* arch_info,
513 bfd* empty_bfd, bfd_target* empty_xvec) {
514 memset(empty_bfd, 0, sizeof(*empty_bfd));
515 memset(empty_xvec, 0, sizeof(*empty_xvec));
516 empty_xvec->flavour = bfd_target_unknown_flavour;
517 empty_xvec->byteorder = native_endian();
518 empty_bfd->xvec = empty_xvec;
519 empty_bfd->arch_info = arch_info;
520 return empty_bfd;
521 }
522
read_zero_data_only(bfd_vma ignore_p,bfd_byte * myaddr,unsigned int length,struct disassemble_info * ignore_info)523 static int read_zero_data_only(bfd_vma ignore_p,
524 bfd_byte* myaddr, unsigned int length,
525 struct disassemble_info *ignore_info) {
526 memset(myaddr, 0, length);
527 return 0;
528 }
print_to_dev_null(void * ignore_stream,const char * ignore_format,...)529 static int print_to_dev_null(void* ignore_stream, const char* ignore_format, ...) {
530 return 0;
531 }
532
533 /* Prime the pump by running the selected disassembler on a null input.
534 This forces the machine-specific disassembler to divulge invariant
535 information like bytes_per_line.
536 */
parse_fake_insn(disassembler_ftype dfn,struct disassemble_info * dinfo)537 static void parse_fake_insn(disassembler_ftype dfn,
538 struct disassemble_info* dinfo) {
539 typedef int (*read_memory_ftype)
540 (bfd_vma memaddr, bfd_byte *myaddr, unsigned int length,
541 struct disassemble_info *info);
542 read_memory_ftype read_memory_func = dinfo->read_memory_func;
543 fprintf_ftype fprintf_func = dinfo->fprintf_func;
544
545 dinfo->read_memory_func = &read_zero_data_only;
546 dinfo->fprintf_func = &print_to_dev_null;
547 (*dfn)(0, dinfo);
548
549 /* put it back */
550 dinfo->read_memory_func = read_memory_func;
551 dinfo->fprintf_func = fprintf_func;
552 }
553
init_disassemble_info_from_bfd(struct disassemble_info * dinfo,void * stream,fprintf_ftype fprintf_func,bfd * abfd,char * disassembler_options)554 static void init_disassemble_info_from_bfd(struct disassemble_info* dinfo,
555 void *stream,
556 fprintf_ftype fprintf_func,
557 bfd* abfd,
558 char* disassembler_options) {
559 init_disassemble_info(dinfo, stream, fprintf_func);
560
561 dinfo->flavour = bfd_get_flavour(abfd);
562 dinfo->arch = bfd_get_arch(abfd);
563 dinfo->mach = bfd_get_mach(abfd);
564 dinfo->disassembler_options = disassembler_options;
565 #if BFD_VERSION >= 234000000
566 /* bfd_octets_per_byte() has 2 args since binutils 2.34 */
567 dinfo->octets_per_byte = bfd_octets_per_byte (abfd, NULL);
568 #else
569 dinfo->octets_per_byte = bfd_octets_per_byte (abfd);
570 #endif
571 dinfo->skip_zeroes = sizeof(void*) * 2;
572 dinfo->skip_zeroes_at_end = sizeof(void*)-1;
573 dinfo->disassembler_needs_relocs = FALSE;
574
575 if (bfd_big_endian(abfd))
576 dinfo->display_endian = dinfo->endian = BFD_ENDIAN_BIG;
577 else if (bfd_little_endian(abfd))
578 dinfo->display_endian = dinfo->endian = BFD_ENDIAN_LITTLE;
579 else
580 dinfo->endian = native_endian();
581
582 disassemble_init_for_target(dinfo);
583 }
584