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Change program_space::ebfd to a gdb_bfd_ref_ptr
[binutils.git] / gdb / windows-tdep.c
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b811d2c2 1/* Copyright (C) 2008-2020 Free Software Foundation, Inc.
bfb87e33
JB		 2
3 This file is part of GDB.
4
5 This program is free software; you can redistribute it and/or modify
6 it under the terms of the GNU General Public License as published by
7 the Free Software Foundation; either version 3 of the License, or
8 (at your option) any later version.
9
10 This program is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 GNU General Public License for more details.
14
15 You should have received a copy of the GNU General Public License
16 along with this program. If not, see <http://www.gnu.org/licenses/>. */
17
18#include "defs.h"
31b060a2 19#include "windows-tdep.h"
bfb87e33
JB		 20#include "gdb_obstack.h"
21#include "xml-support.h"
711e434b
PM		 22#include "gdbarch.h"
23#include "target.h"
24#include "value.h"
25#include "inferior.h"
26#include "command.h"
27#include "gdbcmd.h"
28#include "gdbthread.h"
a8e1bb34 29#include "objfiles.h"
3999122f
PM		 30#include "symfile.h"
31#include "coff-pe-read.h"
32#include "gdb_bfd.h"
33#include "complaints.h"
64870a42
YQ		 34#include "solib.h"
35#include "solib-target.h"
2938e6cf 36#include "gdbcore.h"
584cf46d
HD		 37#include "coff/internal.h"
38#include "libcoff.h"
39#include "solist.h"
711e434b 40
8db52437
SM		 41#define CYGWIN_DLL_NAME "cygwin1.dll"
42
559e7e50 43/* Windows signal numbers differ between MinGW flavors and between
0f2265e2
SM		 44 those and Cygwin. The below enumerations were gleaned from the
45 respective headers. */
46
47/* Signal numbers for the various MinGW flavors. The ones marked with
48 MinGW-w64 are defined by MinGW-w64, not by mingw.org's MinGW. */
559e7e50
EZ		 49
50enum
0f2265e2
SM		 51{
52 WINDOWS_SIGHUP = 1, /* MinGW-w64 */
53 WINDOWS_SIGINT = 2,
54 WINDOWS_SIGQUIT = 3, /* MinGW-w64 */
55 WINDOWS_SIGILL = 4,
56 WINDOWS_SIGTRAP = 5, /* MinGW-w64 */
57 WINDOWS_SIGIOT = 6, /* MinGW-w64 */
58 WINDOWS_SIGEMT = 7, /* MinGW-w64 */
59 WINDOWS_SIGFPE = 8,
60 WINDOWS_SIGKILL = 9, /* MinGW-w64 */
61 WINDOWS_SIGBUS = 10, /* MinGW-w64 */
62 WINDOWS_SIGSEGV = 11,
63 WINDOWS_SIGSYS = 12, /* MinGW-w64 */
64 WINDOWS_SIGPIPE = 13, /* MinGW-w64 */
65 WINDOWS_SIGALRM = 14, /* MinGW-w64 */
66 WINDOWS_SIGTERM = 15,
67 WINDOWS_SIGBREAK = 21,
68 WINDOWS_SIGABRT = 22,
69};
70
71/* Signal numbers for Cygwin. */
72
73enum
74{
75 CYGWIN_SIGHUP = 1,
76 CYGWIN_SIGINT = 2,
77 CYGWIN_SIGQUIT = 3,
78 CYGWIN_SIGILL = 4,
79 CYGWIN_SIGTRAP = 5,
80 CYGWIN_SIGABRT = 6,
81 CYGWIN_SIGEMT = 7,
82 CYGWIN_SIGFPE = 8,
83 CYGWIN_SIGKILL = 9,
84 CYGWIN_SIGBUS = 10,
85 CYGWIN_SIGSEGV = 11,
86 CYGWIN_SIGSYS = 12,
87 CYGWIN_SIGPIPE = 13,
88 CYGWIN_SIGALRM = 14,
89 CYGWIN_SIGTERM = 15,
90 CYGWIN_SIGURG = 16,
91 CYGWIN_SIGSTOP = 17,
92 CYGWIN_SIGTSTP = 18,
93 CYGWIN_SIGCONT = 19,
94 CYGWIN_SIGCHLD = 20,
95 CYGWIN_SIGTTIN = 21,
96 CYGWIN_SIGTTOU = 22,
97 CYGWIN_SIGIO = 23,
98 CYGWIN_SIGXCPU = 24,
99 CYGWIN_SIGXFSZ = 25,
100 CYGWIN_SIGVTALRM = 26,
101 CYGWIN_SIGPROF = 27,
102 CYGWIN_SIGWINCH = 28,
103 CYGWIN_SIGLOST = 29,
104 CYGWIN_SIGUSR1 = 30,
105 CYGWIN_SIGUSR2 = 31,
106};
559e7e50 107
e7d612ad
JT		 108/* These constants are defined by Cygwin's core_dump.h */
109static constexpr unsigned int NOTE_INFO_MODULE = 3;
110static constexpr unsigned int NOTE_INFO_MODULE64 = 4;
111
711e434b
PM		 112struct cmd_list_element *info_w32_cmdlist;
113
114typedef struct thread_information_block_32
115 {
116 uint32_t current_seh; /* %fs:0x0000 */
117 uint32_t current_top_of_stack; /* %fs:0x0004 */
118 uint32_t current_bottom_of_stack; /* %fs:0x0008 */
119 uint32_t sub_system_tib; /* %fs:0x000c */
120 uint32_t fiber_data; /* %fs:0x0010 */
121 uint32_t arbitrary_data_slot; /* %fs:0x0014 */
122 uint32_t linear_address_tib; /* %fs:0x0018 */
123 uint32_t environment_pointer; /* %fs:0x001c */
124 uint32_t process_id; /* %fs:0x0020 */
125 uint32_t current_thread_id; /* %fs:0x0024 */
126 uint32_t active_rpc_handle; /* %fs:0x0028 */
127 uint32_t thread_local_storage; /* %fs:0x002c */
128 uint32_t process_environment_block; /* %fs:0x0030 */
129 uint32_t last_error_number; /* %fs:0x0034 */
130 }
131thread_information_32;
132
133typedef struct thread_information_block_64
134 {
135 uint64_t current_seh; /* %gs:0x0000 */
136 uint64_t current_top_of_stack; /* %gs:0x0008 */
137 uint64_t current_bottom_of_stack; /* %gs:0x0010 */
138 uint64_t sub_system_tib; /* %gs:0x0018 */
139 uint64_t fiber_data; /* %gs:0x0020 */
140 uint64_t arbitrary_data_slot; /* %gs:0x0028 */
141 uint64_t linear_address_tib; /* %gs:0x0030 */
142 uint64_t environment_pointer; /* %gs:0x0038 */
143 uint64_t process_id; /* %gs:0x0040 */
144 uint64_t current_thread_id; /* %gs:0x0048 */
145 uint64_t active_rpc_handle; /* %gs:0x0050 */
146 uint64_t thread_local_storage; /* %gs:0x0058 */
147 uint64_t process_environment_block; /* %gs:0x0060 */
148 uint64_t last_error_number; /* %gs:0x0068 */
149 }
150thread_information_64;
151
152
153static const char* TIB_NAME[] =
154 {
155 " current_seh ", /* %fs:0x0000 */
156 " current_top_of_stack ", /* %fs:0x0004 */
157 " current_bottom_of_stack ", /* %fs:0x0008 */
158 " sub_system_tib ", /* %fs:0x000c */
159 " fiber_data ", /* %fs:0x0010 */
160 " arbitrary_data_slot ", /* %fs:0x0014 */
161 " linear_address_tib ", /* %fs:0x0018 */
162 " environment_pointer ", /* %fs:0x001c */
163 " process_id ", /* %fs:0x0020 */
164 " current_thread_id ", /* %fs:0x0024 */
165 " active_rpc_handle ", /* %fs:0x0028 */
166 " thread_local_storage ", /* %fs:0x002c */
167 " process_environment_block ", /* %fs:0x0030 */
168 " last_error_number " /* %fs:0x0034 */
169 };
170
581e13c1
MS		 171static const int MAX_TIB32 =
172 sizeof (thread_information_32) / sizeof (uint32_t);
173static const int MAX_TIB64 =
174 sizeof (thread_information_64) / sizeof (uint64_t);
711e434b
PM		 175static const int FULL_TIB_SIZE = 0x1000;
176
491144b5 177static bool maint_display_all_tib = false;
711e434b 178
7928d571
HD		 179static struct gdbarch_data *windows_gdbarch_data_handle;
180
181struct windows_gdbarch_data
182{
183 struct type *siginfo_type;
cd5900f3 184 struct type *tib_ptr_type; /* Type of thread information block */
7928d571
HD		 185};
186
187/* Allocate windows_gdbarch_data for an arch. */
188
189static void *
190init_windows_gdbarch_data (struct gdbarch *gdbarch)
191{
192 return GDBARCH_OBSTACK_ZALLOC (gdbarch, struct windows_gdbarch_data);
193}
194
195/* Get windows_gdbarch_data of an arch. */
196
197static struct windows_gdbarch_data *
198get_windows_gdbarch_data (struct gdbarch *gdbarch)
199{
200 return ((struct windows_gdbarch_data *)
201 gdbarch_data (gdbarch, windows_gdbarch_data_handle));
202}
203
711e434b
PM		 204/* Define Thread Local Base pointer type. */
205
206static struct type *
207windows_get_tlb_type (struct gdbarch *gdbarch)
208{
209 struct type *dword_ptr_type, *dword32_type, *void_ptr_type;
210 struct type *peb_ldr_type, *peb_ldr_ptr_type;
870f88f7 211 struct type *peb_type, *peb_ptr_type, *list_type;
711e434b
PM		 212 struct type *module_list_ptr_type;
213 struct type *tib_type, *seh_type, *tib_ptr_type, *seh_ptr_type;
e0cdfe3c
HD		 214 struct type *word_type, *wchar_type, *wchar_ptr_type;
215 struct type *uni_str_type, *rupp_type, *rupp_ptr_type;
711e434b 216
cd5900f3
HD		 217 windows_gdbarch_data *windows_gdbarch_data
218 = get_windows_gdbarch_data (gdbarch);
219 if (windows_gdbarch_data->tib_ptr_type != nullptr)
220 return windows_gdbarch_data->tib_ptr_type;
221
711e434b
PM		 222 dword_ptr_type = arch_integer_type (gdbarch, gdbarch_ptr_bit (gdbarch),
223 1, "DWORD_PTR");
224 dword32_type = arch_integer_type (gdbarch, 32,
225 1, "DWORD32");
e0cdfe3c
HD		 226 word_type = arch_integer_type (gdbarch, 16,
227 1, "WORD");
228 wchar_type = arch_integer_type (gdbarch, 16,
229 1, "wchar_t");
711e434b 230 void_ptr_type = lookup_pointer_type (builtin_type (gdbarch)->builtin_void);
e0cdfe3c
HD		 231 wchar_ptr_type = arch_pointer_type (gdbarch, gdbarch_ptr_bit (gdbarch),
232 NULL, wchar_type);
711e434b
PM		 233
234 /* list entry */
235
236 list_type = arch_composite_type (gdbarch, NULL, TYPE_CODE_STRUCT);
d0e39ea2 237 list_type->set_name (xstrdup ("list"));
711e434b 238
711e434b
PM		 239 module_list_ptr_type = void_ptr_type;
240
581e13c1
MS		 241 append_composite_type_field (list_type, "forward_list",
242 module_list_ptr_type);
711e434b
PM		 243 append_composite_type_field (list_type, "backward_list",
244 module_list_ptr_type);
245
246 /* Structured Exception Handler */
247
248 seh_type = arch_composite_type (gdbarch, NULL, TYPE_CODE_STRUCT);
d0e39ea2 249 seh_type->set_name (xstrdup ("seh"));
711e434b
PM		 250
251 seh_ptr_type = arch_type (gdbarch, TYPE_CODE_PTR,
77b7c781
UW		 252 TYPE_LENGTH (void_ptr_type) * TARGET_CHAR_BIT,
253 NULL);
711e434b
PM		 254 TYPE_TARGET_TYPE (seh_ptr_type) = seh_type;
255
256 append_composite_type_field (seh_type, "next_seh", seh_ptr_type);
e8e6c82e
PM		 257 append_composite_type_field (seh_type, "handler",
258 builtin_type (gdbarch)->builtin_func_ptr);
711e434b
PM		 259
260 /* struct _PEB_LDR_DATA */
261 peb_ldr_type = arch_composite_type (gdbarch, NULL, TYPE_CODE_STRUCT);
d0e39ea2 262 peb_ldr_type->set_name (xstrdup ("peb_ldr_data"));
711e434b
PM		 263
264 append_composite_type_field (peb_ldr_type, "length", dword32_type);
265 append_composite_type_field (peb_ldr_type, "initialized", dword32_type);
266 append_composite_type_field (peb_ldr_type, "ss_handle", void_ptr_type);
267 append_composite_type_field (peb_ldr_type, "in_load_order", list_type);
268 append_composite_type_field (peb_ldr_type, "in_memory_order", list_type);
269 append_composite_type_field (peb_ldr_type, "in_init_order", list_type);
270 append_composite_type_field (peb_ldr_type, "entry_in_progress",
271 void_ptr_type);
272 peb_ldr_ptr_type = arch_type (gdbarch, TYPE_CODE_PTR,
77b7c781
UW		 273 TYPE_LENGTH (void_ptr_type) * TARGET_CHAR_BIT,
274 NULL);
711e434b
PM		 275 TYPE_TARGET_TYPE (peb_ldr_ptr_type) = peb_ldr_type;
276
e0cdfe3c
HD		 277 /* struct UNICODE_STRING */
278 uni_str_type = arch_composite_type (gdbarch, "unicode_string",
279 TYPE_CODE_STRUCT);
280
281 append_composite_type_field (uni_str_type, "length", word_type);
282 append_composite_type_field (uni_str_type, "maximum_length", word_type);
283 append_composite_type_field_aligned (uni_str_type, "buffer",
284 wchar_ptr_type,
285 TYPE_LENGTH (wchar_ptr_type));
286
287 /* struct _RTL_USER_PROCESS_PARAMETERS */
288 rupp_type = arch_composite_type (gdbarch, "rtl_user_process_parameters",
289 TYPE_CODE_STRUCT);
290
291 append_composite_type_field (rupp_type, "maximum_length", dword32_type);
292 append_composite_type_field (rupp_type, "length", dword32_type);
293 append_composite_type_field (rupp_type, "flags", dword32_type);
294 append_composite_type_field (rupp_type, "debug_flags", dword32_type);
295 append_composite_type_field (rupp_type, "console_handle", void_ptr_type);
296 append_composite_type_field (rupp_type, "console_flags", dword32_type);
297 append_composite_type_field_aligned (rupp_type, "standard_input",
298 void_ptr_type,
299 TYPE_LENGTH (void_ptr_type));
300 append_composite_type_field (rupp_type, "standard_output", void_ptr_type);
301 append_composite_type_field (rupp_type, "standard_error", void_ptr_type);
302 append_composite_type_field (rupp_type, "current_directory", uni_str_type);
303 append_composite_type_field (rupp_type, "current_directory_handle",
304 void_ptr_type);
305 append_composite_type_field (rupp_type, "dll_path", uni_str_type);
306 append_composite_type_field (rupp_type, "image_path_name", uni_str_type);
307 append_composite_type_field (rupp_type, "command_line", uni_str_type);
308 append_composite_type_field (rupp_type, "environment", void_ptr_type);
309 append_composite_type_field (rupp_type, "starting_x", dword32_type);
310 append_composite_type_field (rupp_type, "starting_y", dword32_type);
311 append_composite_type_field (rupp_type, "count_x", dword32_type);
312 append_composite_type_field (rupp_type, "count_y", dword32_type);
313 append_composite_type_field (rupp_type, "count_chars_x", dword32_type);
314 append_composite_type_field (rupp_type, "count_chars_y", dword32_type);
315 append_composite_type_field (rupp_type, "fill_attribute", dword32_type);
316 append_composite_type_field (rupp_type, "window_flags", dword32_type);
317 append_composite_type_field (rupp_type, "show_window_flags", dword32_type);
318 append_composite_type_field_aligned (rupp_type, "window_title",
319 uni_str_type,
320 TYPE_LENGTH (void_ptr_type));
321 append_composite_type_field (rupp_type, "desktop_info", uni_str_type);
322 append_composite_type_field (rupp_type, "shell_info", uni_str_type);
323 append_composite_type_field (rupp_type, "runtime_data", uni_str_type);
324
325 rupp_ptr_type = arch_pointer_type (gdbarch, gdbarch_ptr_bit (gdbarch),
326 NULL, rupp_type);
327
711e434b
PM		 328
329 /* struct process environment block */
330 peb_type = arch_composite_type (gdbarch, NULL, TYPE_CODE_STRUCT);
d0e39ea2 331 peb_type->set_name (xstrdup ("peb"));
711e434b
PM		 332
333 /* First bytes contain several flags. */
334 append_composite_type_field (peb_type, "flags", dword_ptr_type);
335 append_composite_type_field (peb_type, "mutant", void_ptr_type);
336 append_composite_type_field (peb_type, "image_base_address", void_ptr_type);
337 append_composite_type_field (peb_type, "ldr", peb_ldr_ptr_type);
e0cdfe3c 338 append_composite_type_field (peb_type, "process_parameters", rupp_ptr_type);
711e434b
PM		 339 append_composite_type_field (peb_type, "sub_system_data", void_ptr_type);
340 append_composite_type_field (peb_type, "process_heap", void_ptr_type);
341 append_composite_type_field (peb_type, "fast_peb_lock", void_ptr_type);
342 peb_ptr_type = arch_type (gdbarch, TYPE_CODE_PTR,
77b7c781
UW		 343 TYPE_LENGTH (void_ptr_type) * TARGET_CHAR_BIT,
344 NULL);
711e434b
PM		 345 TYPE_TARGET_TYPE (peb_ptr_type) = peb_type;
346
347
348 /* struct thread information block */
349 tib_type = arch_composite_type (gdbarch, NULL, TYPE_CODE_STRUCT);
d0e39ea2 350 tib_type->set_name (xstrdup ("tib"));
711e434b
PM		 351
352 /* uint32_t current_seh; %fs:0x0000 */
353 append_composite_type_field (tib_type, "current_seh", seh_ptr_type);
354 /* uint32_t current_top_of_stack; %fs:0x0004 */
581e13c1
MS		 355 append_composite_type_field (tib_type, "current_top_of_stack",
356 void_ptr_type);
711e434b
PM		 357 /* uint32_t current_bottom_of_stack; %fs:0x0008 */
358 append_composite_type_field (tib_type, "current_bottom_of_stack",
359 void_ptr_type);
360 /* uint32_t sub_system_tib; %fs:0x000c */
361 append_composite_type_field (tib_type, "sub_system_tib", void_ptr_type);
362
363 /* uint32_t fiber_data; %fs:0x0010 */
364 append_composite_type_field (tib_type, "fiber_data", void_ptr_type);
365 /* uint32_t arbitrary_data_slot; %fs:0x0014 */
366 append_composite_type_field (tib_type, "arbitrary_data_slot", void_ptr_type);
367 /* uint32_t linear_address_tib; %fs:0x0018 */
368 append_composite_type_field (tib_type, "linear_address_tib", void_ptr_type);
369 /* uint32_t environment_pointer; %fs:0x001c */
370 append_composite_type_field (tib_type, "environment_pointer", void_ptr_type);
371 /* uint32_t process_id; %fs:0x0020 */
372 append_composite_type_field (tib_type, "process_id", dword_ptr_type);
373 /* uint32_t current_thread_id; %fs:0x0024 */
374 append_composite_type_field (tib_type, "thread_id", dword_ptr_type);
375 /* uint32_t active_rpc_handle; %fs:0x0028 */
376 append_composite_type_field (tib_type, "active_rpc_handle", dword_ptr_type);
377 /* uint32_t thread_local_storage; %fs:0x002c */
581e13c1
MS		 378 append_composite_type_field (tib_type, "thread_local_storage",
379 void_ptr_type);
711e434b
PM		 380 /* uint32_t process_environment_block; %fs:0x0030 */
381 append_composite_type_field (tib_type, "process_environment_block",
382 peb_ptr_type);
383 /* uint32_t last_error_number; %fs:0x0034 */
384 append_composite_type_field (tib_type, "last_error_number", dword_ptr_type);
385
386 tib_ptr_type = arch_type (gdbarch, TYPE_CODE_PTR,
77b7c781
UW		 387 TYPE_LENGTH (void_ptr_type) * TARGET_CHAR_BIT,
388 NULL);
711e434b
PM		 389 TYPE_TARGET_TYPE (tib_ptr_type) = tib_type;
390
cd5900f3 391 windows_gdbarch_data->tib_ptr_type = tib_ptr_type;
ea1fae46 392
711e434b
PM		 393 return tib_ptr_type;
394}
395
396/* The $_tlb convenience variable is a bit special. We don't know
397 for sure the type of the value until we actually have a chance to
398 fetch the data. The type can change depending on gdbarch, so it is
399 also dependent on which thread you have selected. */
400
401/* This function implements the lval_computed support for reading a
402 $_tlb value. */
403
404static void
405tlb_value_read (struct value *val)
406{
407 CORE_ADDR tlb;
408 struct type *type = check_typedef (value_type (val));
409
410 if (!target_get_tib_address (inferior_ptid, &tlb))
411 error (_("Unable to read tlb"));
412 store_typed_address (value_contents_raw (val), type, tlb);
413}
414
415/* This function implements the lval_computed support for writing a
416 $_tlb value. */
417
418static void
419tlb_value_write (struct value *v, struct value *fromval)
420{
421 error (_("Impossible to change the Thread Local Base"));
422}
423
c8f2448a 424static const struct lval_funcs tlb_value_funcs =
711e434b
PM		 425 {
426 tlb_value_read,
427 tlb_value_write
428 };
429
430
431/* Return a new value with the correct type for the tlb object of
432 the current thread using architecture GDBARCH. Return a void value
433 if there's no object available. */
434
435static struct value *
22d2b532 436tlb_make_value (struct gdbarch *gdbarch, struct internalvar *var, void *ignore)
711e434b 437{
841de120 438 if (target_has_stack () && inferior_ptid != null_ptid)
711e434b
PM		 439 {
440 struct type *type = windows_get_tlb_type (gdbarch);
441 return allocate_computed_value (type, &tlb_value_funcs, NULL);
442 }
443
444 return allocate_value (builtin_type (gdbarch)->builtin_void);
445}
446
447
448/* Display thread information block of a given thread. */
449
450static int
451display_one_tib (ptid_t ptid)
452{
453 gdb_byte *tib = NULL;
454 gdb_byte *index;
455 CORE_ADDR thread_local_base;
456 ULONGEST i, val, max, max_name, size, tib_size;
f5656ead
TT		 457 ULONGEST sizeof_ptr = gdbarch_ptr_bit (target_gdbarch ());
458 enum bfd_endian byte_order = gdbarch_byte_order (target_gdbarch ());
711e434b
PM		 459
460 if (sizeof_ptr == 64)
461 {
462 size = sizeof (uint64_t);
463 tib_size = sizeof (thread_information_64);
464 max = MAX_TIB64;
465 }
466 else
467 {
468 size = sizeof (uint32_t);
469 tib_size = sizeof (thread_information_32);
470 max = MAX_TIB32;
471 }
472
473 max_name = max;
474
475 if (maint_display_all_tib)
476 {
477 tib_size = FULL_TIB_SIZE;
478 max = tib_size / size;
479 }
480
224c3ddb 481 tib = (gdb_byte *) alloca (tib_size);
711e434b
PM		 482
483 if (target_get_tib_address (ptid, &thread_local_base) == 0)
484 {
485 printf_filtered (_("Unable to get thread local base for %s\n"),
a068643d 486 target_pid_to_str (ptid).c_str ());
711e434b
PM		 487 return -1;
488 }
489
8b88a78e 490 if (target_read (current_top_target (), TARGET_OBJECT_MEMORY,
711e434b
PM		 491 NULL, tib, thread_local_base, tib_size) != tib_size)
492 {
581e13c1
MS		 493 printf_filtered (_("Unable to read thread information "
494 "block for %s at address %s\n"),
a068643d
TT		 495 target_pid_to_str (ptid).c_str (),
496 paddress (target_gdbarch (), thread_local_base));
711e434b
PM		 497 return -1;
498 }
499
500 printf_filtered (_("Thread Information Block %s at %s\n"),
a068643d 501 target_pid_to_str (ptid).c_str (),
f5656ead 502 paddress (target_gdbarch (), thread_local_base));
711e434b
PM		 503
504 index = (gdb_byte *) tib;
505
506 /* All fields have the size of a pointer, this allows to iterate
507 using the same for loop for both layouts. */
508 for (i = 0; i < max; i++)
509 {
510 val = extract_unsigned_integer (index, size, byte_order);
511 if (i < max_name)
512 printf_filtered (_("%s is 0x%s\n"), TIB_NAME[i], phex (val, size));
513 else if (val != 0)
514 printf_filtered (_("TIB[0x%s] is 0x%s\n"), phex (i * size, 2),
515 phex (val, size));
516 index += size;
517 }
518 return 1;
519}
520
5d5658a1 521/* Display thread information block of the current thread. */
711e434b
PM		 522
523static void
c281872e 524display_tib (const char * args, int from_tty)
711e434b 525{
d7e15655 526 if (inferior_ptid != null_ptid)
711e434b
PM		 527 display_one_tib (inferior_ptid);
528}
bfb87e33
JB		 529
530void
dc05df57 531windows_xfer_shared_library (const char* so_name, CORE_ADDR load_addr,
c162ed3e 532 CORE_ADDR *text_offset_cached,
5af949e3 533 struct gdbarch *gdbarch, struct obstack *obstack)
bfb87e33 534{
c162ed3e 535 CORE_ADDR text_offset = text_offset_cached ? *text_offset_cached : 0;
3999122f 536
bfb87e33 537 obstack_grow_str (obstack, "<library name=\"");
5e187554
SM		 538 std::string p = xml_escape_text (so_name);
539 obstack_grow_str (obstack, p.c_str ());
5af949e3 540 obstack_grow_str (obstack, "\"><segment address=\"");
c162ed3e
HD		 541
542 if (!text_offset)
543 {
ad80db5b 544 gdb_bfd_ref_ptr dll (gdb_bfd_open (so_name, gnutarget));
c162ed3e
HD		 545 /* The following calls are OK even if dll is NULL.
546 The default value 0x1000 is returned by pe_text_section_offset
547 in that case. */
548 text_offset = pe_text_section_offset (dll.get ());
549 if (text_offset_cached)
550 *text_offset_cached = text_offset;
551 }
552
3999122f 553 obstack_grow_str (obstack, paddress (gdbarch, load_addr + text_offset));
bfb87e33
JB		 554 obstack_grow_str (obstack, "\"/></library>");
555}
711e434b 556
a8e1bb34
JB		 557/* Implement the "iterate_over_objfiles_in_search_order" gdbarch
558 method. It searches all objfiles, starting with CURRENT_OBJFILE
559 first (if not NULL).
560
561 On Windows, the system behaves a little differently when two
562 objfiles each define a global symbol using the same name, compared
563 to other platforms such as GNU/Linux for instance. On GNU/Linux,
564 all instances of the symbol effectively get merged into a single
565 one, but on Windows, they remain distinct.
566
567 As a result, it usually makes sense to start global symbol searches
568 with the current objfile before expanding it to all other objfiles.
569 This helps for instance when a user debugs some code in a DLL that
570 refers to a global variable defined inside that DLL. When trying
571 to print the value of that global variable, it would be unhelpful
572 to print the value of another global variable defined with the same
573 name, but in a different DLL. */
574
64870a42 575static void
a8e1bb34
JB		 576windows_iterate_over_objfiles_in_search_order
577 (struct gdbarch *gdbarch,
578 iterate_over_objfiles_in_search_order_cb_ftype *cb,
579 void *cb_data, struct objfile *current_objfile)
580{
581 int stop;
a8e1bb34
JB		 582
583 if (current_objfile)
584 {
585 stop = cb (current_objfile, cb_data);
586 if (stop)
587 return;
588 }
589
2030c079 590 for (objfile *objfile : current_program_space->objfiles ())
a8e1bb34
JB		 591 {
592 if (objfile != current_objfile)
593 {
594 stop = cb (objfile, cb_data);
595 if (stop)
596 return;
597 }
598 }
599}
600
711e434b
PM		 601static void
602show_maint_show_all_tib (struct ui_file *file, int from_tty,
603 struct cmd_list_element *c, const char *value)
604{
581e13c1
MS		 605 fprintf_filtered (file, _("Show all non-zero elements of "
606 "Thread Information Block is %s.\n"), value);
711e434b
PM		 607}
608
45e1f031
TT		 609
610static int w32_prefix_command_valid = 0;
611void
612init_w32_command_list (void)
613{
614 if (!w32_prefix_command_valid)
615 {
616 add_basic_prefix_cmd
617 ("w32", class_info,
618 _("Print information specific to Win32 debugging."),
619 &info_w32_cmdlist, "info w32 ", 0, &infolist);
620 w32_prefix_command_valid = 1;
621 }
622}
623
0f2265e2 624/* Implementation of `gdbarch_gdb_signal_to_target' for Windows. */
559e7e50
EZ		 625
626static int
627windows_gdb_signal_to_target (struct gdbarch *gdbarch, enum gdb_signal signal)
628{
629 switch (signal)
630 {
631 case GDB_SIGNAL_0:
632 return 0;
633 case GDB_SIGNAL_HUP:
634 return WINDOWS_SIGHUP;
635 case GDB_SIGNAL_INT:
636 return WINDOWS_SIGINT;
637 case GDB_SIGNAL_QUIT:
638 return WINDOWS_SIGQUIT;
639 case GDB_SIGNAL_ILL:
640 return WINDOWS_SIGILL;
641 case GDB_SIGNAL_TRAP:
642 return WINDOWS_SIGTRAP;
643 case GDB_SIGNAL_ABRT:
644 return WINDOWS_SIGABRT;
645 case GDB_SIGNAL_EMT:
646 return WINDOWS_SIGEMT;
647 case GDB_SIGNAL_FPE:
648 return WINDOWS_SIGFPE;
649 case GDB_SIGNAL_KILL:
650 return WINDOWS_SIGKILL;
651 case GDB_SIGNAL_BUS:
652 return WINDOWS_SIGBUS;
653 case GDB_SIGNAL_SEGV:
654 return WINDOWS_SIGSEGV;
655 case GDB_SIGNAL_SYS:
656 return WINDOWS_SIGSYS;
657 case GDB_SIGNAL_PIPE:
658 return WINDOWS_SIGPIPE;
659 case GDB_SIGNAL_ALRM:
660 return WINDOWS_SIGALRM;
661 case GDB_SIGNAL_TERM:
662 return WINDOWS_SIGTERM;
0f2265e2
SM		 663 }
664 return -1;
665}
666
667/* Implementation of `gdbarch_gdb_signal_to_target' for Cygwin. */
668
669static int
670cygwin_gdb_signal_to_target (struct gdbarch *gdbarch, enum gdb_signal signal)
671{
672 switch (signal)
673 {
674 case GDB_SIGNAL_0:
675 return 0;
676 case GDB_SIGNAL_HUP:
677 return CYGWIN_SIGHUP;
678 case GDB_SIGNAL_INT:
679 return CYGWIN_SIGINT;
680 case GDB_SIGNAL_QUIT:
681 return CYGWIN_SIGQUIT;
682 case GDB_SIGNAL_ILL:
683 return CYGWIN_SIGILL;
684 case GDB_SIGNAL_TRAP:
685 return CYGWIN_SIGTRAP;
686 case GDB_SIGNAL_ABRT:
687 return CYGWIN_SIGABRT;
688 case GDB_SIGNAL_EMT:
689 return CYGWIN_SIGEMT;
690 case GDB_SIGNAL_FPE:
691 return CYGWIN_SIGFPE;
692 case GDB_SIGNAL_KILL:
693 return CYGWIN_SIGKILL;
694 case GDB_SIGNAL_BUS:
695 return CYGWIN_SIGBUS;
696 case GDB_SIGNAL_SEGV:
697 return CYGWIN_SIGSEGV;
698 case GDB_SIGNAL_SYS:
699 return CYGWIN_SIGSYS;
700 case GDB_SIGNAL_PIPE:
701 return CYGWIN_SIGPIPE;
702 case GDB_SIGNAL_ALRM:
703 return CYGWIN_SIGALRM;
704 case GDB_SIGNAL_TERM:
705 return CYGWIN_SIGTERM;
559e7e50 706 case GDB_SIGNAL_URG:
0f2265e2 707 return CYGWIN_SIGURG;
559e7e50 708 case GDB_SIGNAL_STOP:
0f2265e2 709 return CYGWIN_SIGSTOP;
559e7e50 710 case GDB_SIGNAL_TSTP:
0f2265e2 711 return CYGWIN_SIGTSTP;
559e7e50 712 case GDB_SIGNAL_CONT:
0f2265e2 713 return CYGWIN_SIGCONT;
559e7e50 714 case GDB_SIGNAL_CHLD:
0f2265e2 715 return CYGWIN_SIGCHLD;
559e7e50 716 case GDB_SIGNAL_TTIN:
0f2265e2 717 return CYGWIN_SIGTTIN;
559e7e50 718 case GDB_SIGNAL_TTOU:
0f2265e2 719 return CYGWIN_SIGTTOU;
559e7e50 720 case GDB_SIGNAL_IO:
0f2265e2 721 return CYGWIN_SIGIO;
559e7e50 722 case GDB_SIGNAL_XCPU:
0f2265e2 723 return CYGWIN_SIGXCPU;
559e7e50 724 case GDB_SIGNAL_XFSZ:
0f2265e2 725 return CYGWIN_SIGXFSZ;
559e7e50 726 case GDB_SIGNAL_VTALRM:
0f2265e2 727 return CYGWIN_SIGVTALRM;
559e7e50 728 case GDB_SIGNAL_PROF:
0f2265e2 729 return CYGWIN_SIGPROF;
559e7e50 730 case GDB_SIGNAL_WINCH:
0f2265e2 731 return CYGWIN_SIGWINCH;
559e7e50 732 case GDB_SIGNAL_PWR:
0f2265e2 733 return CYGWIN_SIGLOST;
559e7e50 734 case GDB_SIGNAL_USR1:
0f2265e2 735 return CYGWIN_SIGUSR1;
559e7e50 736 case GDB_SIGNAL_USR2:
0f2265e2 737 return CYGWIN_SIGUSR2;
559e7e50
EZ		 738 }
739 return -1;
740}
741
6bafc845
HD		 742struct enum_value_name
743{
744 uint32_t value;
745 const char *name;
746};
747
748/* Allocate a TYPE_CODE_ENUM type structure with its named values. */
749
750static struct type *
751create_enum (struct gdbarch *gdbarch, int bit, const char *name,
752 const struct enum_value_name *values, int count)
753{
754 struct type *type;
755 int i;
756
757 type = arch_type (gdbarch, TYPE_CODE_ENUM, bit, name);
5e33d5f4 758 type->set_num_fields (count);
3cabb6b0
SM		 759 type->set_fields
760 ((struct field *) TYPE_ZALLOC (type, sizeof (struct field) * count));
653223d3 761 type->set_is_unsigned (true);
6bafc845
HD		 762
763 for (i = 0; i < count; i++)
764 {
765 TYPE_FIELD_NAME (type, i) = values[i].name;
ceacbf6e 766 SET_FIELD_ENUMVAL (type->field (i), values[i].value);
6bafc845
HD		 767 }
768
769 return type;
770}
771
772static const struct enum_value_name exception_values[] =
773{
774 { 0x40000015, "FATAL_APP_EXIT" },
9852ceef
HD		 775 { 0x4000001E, "WX86_SINGLE_STEP" },
776 { 0x4000001F, "WX86_BREAKPOINT" },
6bafc845
HD		 777 { 0x40010005, "DBG_CONTROL_C" },
778 { 0x40010008, "DBG_CONTROL_BREAK" },
779 { 0x80000002, "DATATYPE_MISALIGNMENT" },
780 { 0x80000003, "BREAKPOINT" },
781 { 0x80000004, "SINGLE_STEP" },
782 { 0xC0000005, "ACCESS_VIOLATION" },
783 { 0xC0000006, "IN_PAGE_ERROR" },
784 { 0xC000001D, "ILLEGAL_INSTRUCTION" },
785 { 0xC0000025, "NONCONTINUABLE_EXCEPTION" },
786 { 0xC0000026, "INVALID_DISPOSITION" },
787 { 0xC000008C, "ARRAY_BOUNDS_EXCEEDED" },
788 { 0xC000008D, "FLOAT_DENORMAL_OPERAND" },
789 { 0xC000008E, "FLOAT_DIVIDE_BY_ZERO" },
790 { 0xC000008F, "FLOAT_INEXACT_RESULT" },
791 { 0xC0000090, "FLOAT_INVALID_OPERATION" },
792 { 0xC0000091, "FLOAT_OVERFLOW" },
793 { 0xC0000092, "FLOAT_STACK_CHECK" },
794 { 0xC0000093, "FLOAT_UNDERFLOW" },
795 { 0xC0000094, "INTEGER_DIVIDE_BY_ZERO" },
796 { 0xC0000095, "INTEGER_OVERFLOW" },
797 { 0xC0000096, "PRIV_INSTRUCTION" },
798 { 0xC00000FD, "STACK_OVERFLOW" },
799 { 0xC0000409, "FAST_FAIL" },
800};
801
802static const struct enum_value_name violation_values[] =
803{
804 { 0, "READ_ACCESS_VIOLATION" },
805 { 1, "WRITE_ACCESS_VIOLATION" },
806 { 8, "DATA_EXECUTION_PREVENTION_VIOLATION" },
807};
808
7928d571
HD		 809/* Implement the "get_siginfo_type" gdbarch method. */
810
811static struct type *
812windows_get_siginfo_type (struct gdbarch *gdbarch)
813{
814 struct windows_gdbarch_data *windows_gdbarch_data;
815 struct type *dword_type, *pvoid_type, *ulongptr_type;
6bafc845
HD		 816 struct type *code_enum, *violation_enum;
817 struct type *violation_type, *para_type, *siginfo_ptr_type, *siginfo_type;
7928d571
HD		 818
819 windows_gdbarch_data = get_windows_gdbarch_data (gdbarch);
820 if (windows_gdbarch_data->siginfo_type != NULL)
821 return windows_gdbarch_data->siginfo_type;
822
823 dword_type = arch_integer_type (gdbarch, gdbarch_int_bit (gdbarch),
824 1, "DWORD");
825 pvoid_type = arch_pointer_type (gdbarch, gdbarch_ptr_bit (gdbarch), "PVOID",
826 builtin_type (gdbarch)->builtin_void);
827 ulongptr_type = arch_integer_type (gdbarch, gdbarch_ptr_bit (gdbarch),
828 1, "ULONG_PTR");
829
6bafc845
HD		 830 /* ExceptionCode value names */
831 code_enum = create_enum (gdbarch, gdbarch_int_bit (gdbarch),
832 "ExceptionCode", exception_values,
833 ARRAY_SIZE (exception_values));
834
835 /* ACCESS_VIOLATION type names */
836 violation_enum = create_enum (gdbarch, gdbarch_ptr_bit (gdbarch),
837 "ViolationType", violation_values,
838 ARRAY_SIZE (violation_values));
839
840 /* ACCESS_VIOLATION information */
841 violation_type = arch_composite_type (gdbarch, NULL, TYPE_CODE_STRUCT);
842 append_composite_type_field (violation_type, "Type", violation_enum);
843 append_composite_type_field (violation_type, "Address", pvoid_type);
844
845 /* Unnamed union of the documented field ExceptionInformation,
846 and the alternative AccessViolationInformation (which displays
847 human-readable values for ExceptionCode ACCESS_VIOLATION). */
848 para_type = arch_composite_type (gdbarch, NULL, TYPE_CODE_UNION);
849 append_composite_type_field (para_type, "ExceptionInformation",
850 lookup_array_range_type (ulongptr_type, 0, 14));
851 append_composite_type_field (para_type, "AccessViolationInformation",
852 violation_type);
853
7928d571
HD		 854 siginfo_type = arch_composite_type (gdbarch, "EXCEPTION_RECORD",
855 TYPE_CODE_STRUCT);
856 siginfo_ptr_type = arch_pointer_type (gdbarch, gdbarch_ptr_bit (gdbarch),
857 NULL, siginfo_type);
858
6bafc845
HD		 859 /* ExceptionCode is documented as type DWORD, but here a helper
860 enum type is used instead to display a human-readable value. */
861 append_composite_type_field (siginfo_type, "ExceptionCode", code_enum);
7928d571
HD		 862 append_composite_type_field (siginfo_type, "ExceptionFlags", dword_type);
863 append_composite_type_field (siginfo_type, "ExceptionRecord",
864 siginfo_ptr_type);
865 append_composite_type_field (siginfo_type, "ExceptionAddress",
866 pvoid_type);
867 append_composite_type_field (siginfo_type, "NumberParameters", dword_type);
868 /* The 64-bit variant needs some padding. */
6bafc845
HD		 869 append_composite_type_field_aligned (siginfo_type, "",
870 para_type, TYPE_LENGTH (ulongptr_type));
7928d571
HD		 871
872 windows_gdbarch_data->siginfo_type = siginfo_type;
873
874 return siginfo_type;
875}
876
584cf46d
HD		 877/* Implement the "solib_create_inferior_hook" target_so_ops method. */
878
879static void
880windows_solib_create_inferior_hook (int from_tty)
881{
882 CORE_ADDR exec_base = 0;
883
884 /* Find base address of main executable in
885 TIB->process_environment_block->image_base_address. */
886 struct gdbarch *gdbarch = target_gdbarch ();
887 enum bfd_endian byte_order = gdbarch_byte_order (gdbarch);
888 int ptr_bytes;
889 int peb_offset; /* Offset of process_environment_block in TIB. */
890 int base_offset; /* Offset of image_base_address in PEB. */
891 if (gdbarch_ptr_bit (gdbarch) == 32)
892 {
893 ptr_bytes = 4;
894 peb_offset = 48;
895 base_offset = 8;
896 }
897 else
898 {
899 ptr_bytes = 8;
900 peb_offset = 96;
901 base_offset = 16;
902 }
903 CORE_ADDR tlb;
904 gdb_byte buf[8];
55f6301a 905 if (target_has_execution ()
b7d64b29 906 && target_get_tib_address (inferior_ptid, &tlb)
584cf46d
HD		 907 && !target_read_memory (tlb + peb_offset, buf, ptr_bytes))
908 {
909 CORE_ADDR peb = extract_unsigned_integer (buf, ptr_bytes, byte_order);
910 if (!target_read_memory (peb + base_offset, buf, ptr_bytes))
911 exec_base = extract_unsigned_integer (buf, ptr_bytes, byte_order);
912 }
913
914 /* Rebase executable if the base address changed because of ASLR. */
915 if (symfile_objfile != nullptr && exec_base != 0)
916 {
7e10abd1
TT		 917 CORE_ADDR vmaddr
918 = pe_data (current_program_space->exec_bfd ())->pe_opthdr.ImageBase;
584cf46d
HD		 919 if (vmaddr != exec_base)
920 objfile_rebase (symfile_objfile, exec_base - vmaddr);
921 }
922}
923
924static struct target_so_ops windows_so_ops;
925
0f2265e2
SM		 926/* Common parts for gdbarch initialization for the Windows and Cygwin OS
927 ABIs. */
64870a42 928
0f2265e2
SM		 929static void
930windows_init_abi_common (struct gdbarch_info info, struct gdbarch *gdbarch)
64870a42 931{
53375380
PA		 932 set_gdbarch_wchar_bit (gdbarch, 16);
933 set_gdbarch_wchar_signed (gdbarch, 0);
934
64870a42
YQ		 935 /* Canonical paths on this target look like
936 `c:\Program Files\Foo App\mydll.dll', for example. */
937 set_gdbarch_has_dos_based_file_system (gdbarch, 1);
938
939 set_gdbarch_iterate_over_objfiles_in_search_order
940 (gdbarch, windows_iterate_over_objfiles_in_search_order);
941
584cf46d
HD		 942 windows_so_ops = solib_target_so_ops;
943 windows_so_ops.solib_create_inferior_hook
944 = windows_solib_create_inferior_hook;
945 set_solib_ops (gdbarch, &windows_so_ops);
7928d571
HD		 946
947 set_gdbarch_get_siginfo_type (gdbarch, windows_get_siginfo_type);
64870a42
YQ		 948}
949
0f2265e2
SM		 950/* See windows-tdep.h. */
951void
952windows_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch)
953{
954 windows_init_abi_common (info, gdbarch);
955 set_gdbarch_gdb_signal_to_target (gdbarch, windows_gdb_signal_to_target);
956}
957
958/* See windows-tdep.h. */
959
960void
961cygwin_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch)
962{
963 windows_init_abi_common (info, gdbarch);
964 set_gdbarch_gdb_signal_to_target (gdbarch, cygwin_gdb_signal_to_target);
965}
966
22d2b532
SDJ		 967/* Implementation of `tlb' variable. */
968
969static const struct internalvar_funcs tlb_funcs =
970{
971 tlb_make_value,
972 NULL,
973 NULL
974};
975
8db52437
SM		 976/* Layout of an element of a PE's Import Directory Table. Based on:
977
978 https://docs.microsoft.com/en-us/windows/win32/debug/pe-format#import-directory-table
979 */
980
981struct pe_import_directory_entry
982{
983 uint32_t import_lookup_table_rva;
984 uint32_t timestamp;
985 uint32_t forwarder_chain;
986 uint32_t name_rva;
987 uint32_t import_address_table_rva;
988};
989
990gdb_static_assert (sizeof (pe_import_directory_entry) == 20);
991
992/* See windows-tdep.h. */
993
994bool
995is_linked_with_cygwin_dll (bfd *abfd)
996{
997 /* The list of DLLs a PE is linked to is in the .idata section. See:
998
999 https://docs.microsoft.com/en-us/windows/win32/debug/pe-format#the-idata-section
1000 */
1001 asection *idata_section = bfd_get_section_by_name (abfd, ".idata");
1002 if (idata_section == nullptr)
1003 return false;
1004
00ac85d3
SM		 1005 bfd_size_type idata_section_size = bfd_section_size (idata_section);
1006 internal_extra_pe_aouthdr *pe_extra = &pe_data (abfd)->pe_opthdr;
1007 bfd_vma import_table_va = pe_extra->DataDirectory[PE_IMPORT_TABLE].VirtualAddress;
1008 bfd_vma idata_section_va = bfd_section_vma (idata_section);
1009
1010 /* The section's virtual address as reported by BFD has the image base applied,
1011 remove it. */
1012 gdb_assert (idata_section_va >= pe_extra->ImageBase);
1013 idata_section_va -= pe_extra->ImageBase;
1014
1015 bfd_vma idata_section_end_va = idata_section_va + idata_section_size;
1016
1017 /* Make sure that the import table is indeed within the .idata section's range. */
1018 if (import_table_va < idata_section_va
1019 || import_table_va >= idata_section_end_va)
1020 {
1021 warning (_("\
1022%s: import table's virtual address (0x%" BFD_VMA_FMT "x) is outside .idata \
1023section's range [0x%" BFD_VMA_FMT "x, 0x%" BFD_VMA_FMT "x[."),
1024 bfd_get_filename (abfd), import_table_va, idata_section_va,
1025 idata_section_end_va);
1026 return false;
1027 }
1028
1029 /* The import table starts at this offset into the .idata section. */
1030 bfd_vma import_table_offset_in_sect = import_table_va - idata_section_va;
8db52437 1031
e0fc5c3f
SM		 1032 /* Get the section's data. */
1033 gdb::byte_vector idata_contents;
1034 if (!gdb_bfd_get_full_section_contents (abfd, idata_section, &idata_contents))
8db52437 1035 {
16197208
SM		 1036 warning (_("%s: failed to get contents of .idata section."),
1037 bfd_get_filename (abfd));
8db52437
SM		 1038 return false;
1039 }
1040
00ac85d3
SM		 1041 gdb_assert (idata_contents.size () == idata_section_size);
1042
1043 const gdb_byte *iter = idata_contents.data () + import_table_offset_in_sect;
1044 const gdb_byte *end = idata_contents.data () + idata_section_size;
8db52437
SM		 1045 const pe_import_directory_entry null_dir_entry = { 0 };
1046
1047 /* Iterate through all directory entries. */
1048 while (true)
1049 {
1050 /* Is there enough space left in the section for another entry? */
1051 if (iter + sizeof (pe_import_directory_entry) > end)
1052 {
16197208
SM		 1053 warning (_("%s: unexpected end of .idata section."),
1054 bfd_get_filename (abfd));
8db52437
SM		 1055 break;
1056 }
1057
1058 pe_import_directory_entry *dir_entry = (pe_import_directory_entry *) iter;
1059
1060 /* Is it the end of list marker? */
1061 if (memcmp (dir_entry, &null_dir_entry,
1062 sizeof (pe_import_directory_entry)) == 0)
1063 break;
1064
00ac85d3 1065 bfd_vma name_va = dir_entry->name_rva;
8db52437
SM		 1066
1067 /* If the name's virtual address is smaller than the section's virtual
1068 address, there's a problem. */
00ac85d3 1069 if (name_va < idata_section_va || name_va >= idata_section_end_va)
8db52437
SM		 1070 {
1071 warning (_("\
16197208
SM		 1072%s: name's virtual address (0x%" BFD_VMA_FMT "x) is outside .idata section's \
1073range [0x%" BFD_VMA_FMT "x, 0x%" BFD_VMA_FMT "x[."),
1074 bfd_get_filename (abfd), name_va, idata_section_va,
1075 idata_section_end_va);
8db52437
SM		 1076 break;
1077 }
1078
00ac85d3 1079 const gdb_byte *name = &idata_contents[name_va - idata_section_va];
8db52437 1080
29514b87
TT		 1081 /* Make sure we don't overshoot the end of the section with the
1082 streq. */
1083 if (name + sizeof (CYGWIN_DLL_NAME) <= end)
1084 {
1085 /* Finally, check if this is the dll name we are looking for. */
1086 if (streq ((const char *) name, CYGWIN_DLL_NAME))
1087 return true;
1088 }
8db52437 1089
2836752f 1090 iter += sizeof (pe_import_directory_entry);
8db52437
SM		 1091 }
1092
29514b87 1093 return false;
8db52437
SM		 1094}
1095
62a5151b
JT		 1096struct cpms_data
1097{
1098 struct gdbarch *gdbarch;
1099 struct obstack *obstack;
1100 int module_count;
1101};
1102
1103static void
1104core_process_module_section (bfd *abfd, asection *sect, void *obj)
1105{
1106 struct cpms_data *data = (struct cpms_data *) obj;
1107 enum bfd_endian byte_order = gdbarch_byte_order (data->gdbarch);
1108
e7d612ad 1109 unsigned int data_type;
62a5151b
JT		 1110 char *module_name;
1111 size_t module_name_size;
e7d612ad 1112 size_t module_name_offset;
62a5151b
JT		 1113 CORE_ADDR base_addr;
1114
1115 gdb_byte *buf = NULL;
1116
1117 if (!startswith (sect->name, ".module"))
1118 return;
1119
1120 buf = (gdb_byte *) xmalloc (bfd_section_size (sect) + 1);
1121 if (!buf)
1122 {
1123 printf_unfiltered ("memory allocation failed for %s\n", sect->name);
1124 goto out;
1125 }
1126 if (!bfd_get_section_contents (abfd, sect,
1127 buf, 0, bfd_section_size (sect)))
1128 goto out;
1129
1130
1131
1132 /* A DWORD (data_type) followed by struct windows_core_module_info. */
e7d612ad 1133 data_type = extract_unsigned_integer (buf, 4, byte_order);
62a5151b 1134
e7d612ad
JT		 1135 if (data_type == NOTE_INFO_MODULE)
1136 {
1137 base_addr = extract_unsigned_integer (buf + 4, 4, byte_order);
1138 module_name_size = extract_unsigned_integer (buf + 8, 4, byte_order);
1139 module_name_offset = 12;
1140 }
1141 else if (data_type == NOTE_INFO_MODULE64)
1142 {
1143 base_addr = extract_unsigned_integer (buf + 4, 8, byte_order);
1144 module_name_size = extract_unsigned_integer (buf + 12, 4, byte_order);
1145 module_name_offset = 16;
1146 }
1147 else
1148 goto out;
62a5151b 1149
e7d612ad 1150 if (module_name_offset + module_name_size > bfd_section_size (sect))
62a5151b 1151 goto out;
e7d612ad 1152 module_name = (char *) buf + module_name_offset;
62a5151b
JT		 1153
1154 /* The first module is the .exe itself. */
1155 if (data->module_count != 0)
1156 windows_xfer_shared_library (module_name, base_addr,
1157 NULL, data->gdbarch, data->obstack);
1158 data->module_count++;
1159
1160out:
1161 xfree (buf);
1162 return;
1163}
1164
1165ULONGEST
1166windows_core_xfer_shared_libraries (struct gdbarch *gdbarch,
1167 gdb_byte *readbuf,
1168 ULONGEST offset, ULONGEST len)
1169{
1170 struct obstack obstack;
1171 const char *buf;
1172 ULONGEST len_avail;
1173 struct cpms_data data = { gdbarch, &obstack, 0 };
1174
1175 obstack_init (&obstack);
1176 obstack_grow_str (&obstack, "<library-list>\n");
1177 bfd_map_over_sections (core_bfd,
1178 core_process_module_section,
1179 &data);
1180 obstack_grow_str0 (&obstack, "</library-list>\n");
1181
1182 buf = (const char *) obstack_finish (&obstack);
1183 len_avail = strlen (buf);
1184 if (offset >= len_avail)
1185 return 0;
1186
1187 if (len > len_avail - offset)
1188 len = len_avail - offset;
1189 memcpy (readbuf, buf + offset, len);
1190
1191 obstack_free (&obstack, NULL);
1192 return len;
1193}
1194
1195/* This is how we want PTIDs from core files to be printed. */
1196
1197std::string
1198windows_core_pid_to_str (struct gdbarch *gdbarch, ptid_t ptid)
1199{
1200 if (ptid.lwp () != 0)
1201 return string_printf ("Thread 0x%lx", ptid.lwp ());
1202
1203 return normal_pid_to_str (ptid);
1204}
1205
6c265988 1206void _initialize_windows_tdep ();
711e434b 1207void
6c265988 1208_initialize_windows_tdep ()
711e434b 1209{
7928d571
HD		 1210 windows_gdbarch_data_handle
1211 = gdbarch_data_register_post_init (init_windows_gdbarch_data);
1212
45e1f031 1213 init_w32_command_list ();
711e434b
PM		 1214 add_cmd ("thread-information-block", class_info, display_tib,
1215 _("Display thread information block."),
1216 &info_w32_cmdlist);
1217 add_alias_cmd ("tib", "thread-information-block", class_info, 1,
1218 &info_w32_cmdlist);
1219
1220 add_setshow_boolean_cmd ("show-all-tib", class_maintenance,
1221 &maint_display_all_tib, _("\
1222Set whether to display all non-zero fields of thread information block."), _("\
1223Show whether to display all non-zero fields of thread information block."), _("\
1224Use \"on\" to enable, \"off\" to disable.\n\
1225If enabled, all non-zero fields of thread information block are displayed,\n\
1226even if their meaning is unknown."),
1227 NULL,
1228 show_maint_show_all_tib,
1229 &maintenance_set_cmdlist,
1230 &maintenance_show_cmdlist);
1231
1232 /* Explicitly create without lookup, since that tries to create a
1233 value with a void typed value, and when we get here, gdbarch
1234 isn't initialized yet. At this point, we're quite sure there
1235 isn't another convenience variable of the same name. */
22d2b532 1236 create_internalvar_type_lazy ("_tlb", &tlb_funcs, NULL);
711e434b 1237}
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