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c906108c | 1 | /* Machine independent support for SVR4 /proc (process file system) for GDB. |
be4d1333 | 2 | Copyright 1999, 2000, 2001, 2002 Free Software Foundation, Inc. |
c3f6f71d JM |
3 | Written by Michael Snyder at Cygnus Solutions. |
4 | Based on work by Fred Fish, Stu Grossman, Geoff Noer, and others. | |
c906108c | 5 | |
c3f6f71d | 6 | This file is part of GDB. |
c906108c | 7 | |
c3f6f71d JM |
8 | This program is free software; you can redistribute it and/or modify |
9 | it under the terms of the GNU General Public License as published by | |
10 | the Free Software Foundation; either version 2 of the License, or | |
11 | (at your option) any later version. | |
c906108c | 12 | |
c3f6f71d JM |
13 | This program is distributed in the hope that it will be useful, |
14 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | GNU General Public License for more details. | |
c906108c | 17 | |
c3f6f71d JM |
18 | You should have received a copy of the GNU General Public License |
19 | along with this program; if not, write to the Free Software Foundation, | |
20 | Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ | |
c906108c | 21 | |
c3f6f71d JM |
22 | #include "defs.h" |
23 | #include "inferior.h" | |
24 | #include "target.h" | |
25 | #include "gdbcore.h" | |
65554fef | 26 | #include "elf-bfd.h" /* for elfcore_write_* */ |
c3f6f71d | 27 | #include "gdbcmd.h" |
0fda6bd2 | 28 | #include "gdbthread.h" |
c906108c | 29 | |
c3f6f71d JM |
30 | #if defined (NEW_PROC_API) |
31 | #define _STRUCTURED_PROC 1 /* Should be done by configure script. */ | |
32 | #endif | |
c906108c | 33 | |
c3f6f71d | 34 | #include <sys/procfs.h> |
37de36c6 | 35 | #ifdef HAVE_SYS_FAULT_H |
c3f6f71d | 36 | #include <sys/fault.h> |
37de36c6 KB |
37 | #endif |
38 | #ifdef HAVE_SYS_SYSCALL_H | |
c3f6f71d | 39 | #include <sys/syscall.h> |
37de36c6 | 40 | #endif |
c3f6f71d | 41 | #include <sys/errno.h> |
0fda6bd2 JM |
42 | #include <sys/wait.h> |
43 | #include <signal.h> | |
44 | #include <ctype.h> | |
45 | ||
c3f6f71d JM |
46 | /* |
47 | * PROCFS.C | |
48 | * | |
49 | * This module provides the interface between GDB and the | |
50 | * /proc file system, which is used on many versions of Unix | |
51 | * as a means for debuggers to control other processes. | |
52 | * Examples of the systems that use this interface are: | |
53 | * Irix | |
54 | * Solaris | |
55 | * OSF | |
56 | * Unixware | |
37de36c6 | 57 | * AIX5 |
c3f6f71d | 58 | * |
65554fef | 59 | * /proc works by imitating a file system: you open a simulated file |
c3f6f71d JM |
60 | * that represents the process you wish to interact with, and |
61 | * perform operations on that "file" in order to examine or change | |
62 | * the state of the other process. | |
63 | * | |
64 | * The most important thing to know about /proc and this module | |
65 | * is that there are two very different interfaces to /proc: | |
66 | * One that uses the ioctl system call, and | |
67 | * another that uses read and write system calls. | |
68 | * This module has to support both /proc interfaces. This means | |
69 | * that there are two different ways of doing every basic operation. | |
70 | * | |
71 | * In order to keep most of the code simple and clean, I have | |
72 | * defined an interface "layer" which hides all these system calls. | |
73 | * An ifdef (NEW_PROC_API) determines which interface we are using, | |
74 | * and most or all occurrances of this ifdef should be confined to | |
75 | * this interface layer. | |
c906108c SS |
76 | */ |
77 | ||
78 | ||
c3f6f71d JM |
79 | /* Determine which /proc API we are using: |
80 | The ioctl API defines PIOCSTATUS, while | |
81 | the read/write (multiple fd) API never does. */ | |
c906108c | 82 | |
c3f6f71d | 83 | #ifdef NEW_PROC_API |
c906108c | 84 | #include <sys/types.h> |
4b14d3e4 | 85 | #include "gdb_dirent.h" /* opendir/readdir, for listing the LWP's */ |
c3f6f71d | 86 | #endif |
c906108c | 87 | |
c3f6f71d JM |
88 | #include <fcntl.h> /* for O_RDONLY */ |
89 | #include <unistd.h> /* for "X_OK" */ | |
90 | #include "gdb_stat.h" /* for struct stat */ | |
c906108c | 91 | |
103b3ef5 MS |
92 | /* Note: procfs-utils.h must be included after the above system header |
93 | files, because it redefines various system calls using macros. | |
94 | This may be incompatible with the prototype declarations. */ | |
95 | ||
103b3ef5 MS |
96 | #include "proc-utils.h" |
97 | ||
c60c0f5f MS |
98 | /* Prototypes for supply_gregset etc. */ |
99 | #include "gregset.h" | |
100 | ||
c3f6f71d | 101 | /* =================== TARGET_OPS "MODULE" =================== */ |
c906108c | 102 | |
c3f6f71d JM |
103 | /* |
104 | * This module defines the GDB target vector and its methods. | |
105 | */ | |
c906108c | 106 | |
8ab86381 | 107 | static void procfs_open (char *, int); |
a14ed312 KB |
108 | static void procfs_attach (char *, int); |
109 | static void procfs_detach (char *, int); | |
39f77062 | 110 | static void procfs_resume (ptid_t, int, enum target_signal); |
a14ed312 KB |
111 | static int procfs_can_run (void); |
112 | static void procfs_stop (void); | |
113 | static void procfs_files_info (struct target_ops *); | |
114 | static void procfs_fetch_registers (int); | |
115 | static void procfs_store_registers (int); | |
39f77062 | 116 | static void procfs_notice_signals (ptid_t); |
a14ed312 KB |
117 | static void procfs_prepare_to_store (void); |
118 | static void procfs_kill_inferior (void); | |
119 | static void procfs_mourn_inferior (void); | |
120 | static void procfs_create_inferior (char *, char *, char **); | |
39f77062 | 121 | static ptid_t procfs_wait (ptid_t, struct target_waitstatus *); |
043780a1 AC |
122 | static int procfs_xfer_memory (CORE_ADDR, char *, int, int, |
123 | struct mem_attrib *attrib, | |
124 | struct target_ops *); | |
a14ed312 | 125 | |
39f77062 | 126 | static int procfs_thread_alive (ptid_t); |
a14ed312 KB |
127 | |
128 | void procfs_find_new_threads (void); | |
39f77062 | 129 | char *procfs_pid_to_str (ptid_t); |
c3f6f71d | 130 | |
be4d1333 MS |
131 | static int proc_find_memory_regions (int (*) (CORE_ADDR, |
132 | unsigned long, | |
133 | int, int, int, | |
134 | void *), | |
135 | void *); | |
136 | ||
137 | static char * procfs_make_note_section (bfd *, int *); | |
138 | ||
c3f6f71d | 139 | struct target_ops procfs_ops; /* the target vector */ |
c906108c | 140 | |
c3f6f71d | 141 | static void |
fba45db2 | 142 | init_procfs_ops (void) |
c3f6f71d | 143 | { |
be4d1333 MS |
144 | procfs_ops.to_shortname = "procfs"; |
145 | procfs_ops.to_longname = "Unix /proc child process"; | |
146 | procfs_ops.to_doc = | |
c3f6f71d | 147 | "Unix /proc child process (started by the \"run\" command)."; |
be4d1333 MS |
148 | procfs_ops.to_open = procfs_open; |
149 | procfs_ops.to_can_run = procfs_can_run; | |
150 | procfs_ops.to_create_inferior = procfs_create_inferior; | |
151 | procfs_ops.to_kill = procfs_kill_inferior; | |
152 | procfs_ops.to_mourn_inferior = procfs_mourn_inferior; | |
153 | procfs_ops.to_attach = procfs_attach; | |
154 | procfs_ops.to_detach = procfs_detach; | |
155 | procfs_ops.to_wait = procfs_wait; | |
156 | procfs_ops.to_resume = procfs_resume; | |
157 | procfs_ops.to_prepare_to_store = procfs_prepare_to_store; | |
158 | procfs_ops.to_fetch_registers = procfs_fetch_registers; | |
159 | procfs_ops.to_store_registers = procfs_store_registers; | |
160 | procfs_ops.to_xfer_memory = procfs_xfer_memory; | |
161 | procfs_ops.to_insert_breakpoint = memory_insert_breakpoint; | |
162 | procfs_ops.to_remove_breakpoint = memory_remove_breakpoint; | |
163 | procfs_ops.to_notice_signals = procfs_notice_signals; | |
164 | procfs_ops.to_files_info = procfs_files_info; | |
165 | procfs_ops.to_stop = procfs_stop; | |
166 | ||
167 | procfs_ops.to_terminal_init = terminal_init_inferior; | |
168 | procfs_ops.to_terminal_inferior = terminal_inferior; | |
c3f6f71d | 169 | procfs_ops.to_terminal_ours_for_output = terminal_ours_for_output; |
be4d1333 MS |
170 | procfs_ops.to_terminal_ours = terminal_ours; |
171 | procfs_ops.to_terminal_info = child_terminal_info; | |
172 | ||
173 | procfs_ops.to_find_new_threads = procfs_find_new_threads; | |
174 | procfs_ops.to_thread_alive = procfs_thread_alive; | |
175 | procfs_ops.to_pid_to_str = procfs_pid_to_str; | |
176 | ||
177 | procfs_ops.to_has_all_memory = 1; | |
178 | procfs_ops.to_has_memory = 1; | |
179 | procfs_ops.to_has_execution = 1; | |
180 | procfs_ops.to_has_stack = 1; | |
181 | procfs_ops.to_has_registers = 1; | |
182 | procfs_ops.to_stratum = process_stratum; | |
183 | procfs_ops.to_has_thread_control = tc_schedlock; | |
184 | procfs_ops.to_find_memory_regions = proc_find_memory_regions; | |
185 | procfs_ops.to_make_corefile_notes = procfs_make_note_section; | |
186 | procfs_ops.to_magic = OPS_MAGIC; | |
c3f6f71d | 187 | } |
c906108c | 188 | |
c3f6f71d JM |
189 | /* =================== END, TARGET_OPS "MODULE" =================== */ |
190 | ||
c3f6f71d JM |
191 | /* |
192 | * World Unification: | |
193 | * | |
194 | * Put any typedefs, defines etc. here that are required for | |
195 | * the unification of code that handles different versions of /proc. | |
196 | */ | |
197 | ||
198 | #ifdef NEW_PROC_API /* Solaris 7 && 8 method for watchpoints */ | |
37de36c6 | 199 | #ifdef WA_READ |
c3f6f71d JM |
200 | enum { READ_WATCHFLAG = WA_READ, |
201 | WRITE_WATCHFLAG = WA_WRITE, | |
202 | EXEC_WATCHFLAG = WA_EXEC, | |
203 | AFTER_WATCHFLAG = WA_TRAPAFTER | |
204 | }; | |
205 | #endif | |
206 | #else /* Irix method for watchpoints */ | |
207 | enum { READ_WATCHFLAG = MA_READ, | |
208 | WRITE_WATCHFLAG = MA_WRITE, | |
209 | EXEC_WATCHFLAG = MA_EXEC, | |
210 | AFTER_WATCHFLAG = 0 /* trapafter not implemented */ | |
211 | }; | |
212 | #endif | |
213 | ||
37de36c6 KB |
214 | /* gdb_sigset_t */ |
215 | #ifdef HAVE_PR_SIGSET_T | |
216 | typedef pr_sigset_t gdb_sigset_t; | |
217 | #else | |
218 | typedef sigset_t gdb_sigset_t; | |
219 | #endif | |
220 | ||
221 | /* sigaction */ | |
222 | #ifdef HAVE_PR_SIGACTION64_T | |
223 | typedef pr_sigaction64_t gdb_sigaction_t; | |
224 | #else | |
225 | typedef struct sigaction gdb_sigaction_t; | |
226 | #endif | |
227 | ||
228 | /* siginfo */ | |
229 | #ifdef HAVE_PR_SIGINFO64_T | |
230 | typedef pr_siginfo64_t gdb_siginfo_t; | |
231 | #else | |
232 | typedef struct siginfo gdb_siginfo_t; | |
233 | #endif | |
234 | ||
235 | /* gdb_premptysysset */ | |
236 | #ifdef premptysysset | |
237 | #define gdb_premptysysset premptysysset | |
238 | #else | |
239 | #define gdb_premptysysset premptyset | |
240 | #endif | |
241 | ||
242 | /* praddsysset */ | |
243 | #ifdef praddsysset | |
244 | #define gdb_praddsysset praddsysset | |
245 | #else | |
246 | #define gdb_praddsysset praddset | |
247 | #endif | |
248 | ||
249 | /* prdelsysset */ | |
250 | #ifdef prdelsysset | |
251 | #define gdb_prdelsysset prdelsysset | |
252 | #else | |
253 | #define gdb_prdelsysset prdelset | |
254 | #endif | |
255 | ||
256 | /* prissyssetmember */ | |
257 | #ifdef prissyssetmember | |
258 | #define gdb_pr_issyssetmember prissyssetmember | |
259 | #else | |
260 | #define gdb_pr_issyssetmember prismember | |
261 | #endif | |
262 | ||
263 | /* As a feature test, saying ``#if HAVE_PRSYSENT_T'' everywhere isn't | |
264 | as intuitively descriptive as it could be, so we'll define | |
265 | DYNAMIC_SYSCALLS to mean the same thing. Anyway, at the time of | |
266 | this writing, this feature is only found on AIX5 systems and | |
267 | basically means that the set of syscalls is not fixed. I.e, | |
268 | there's no nice table that one can #include to get all of the | |
269 | syscall numbers. Instead, they're stored in /proc/PID/sysent | |
270 | for each process. We are at least guaranteed that they won't | |
271 | change over the lifetime of the process. But each process could | |
272 | (in theory) have different syscall numbers. | |
273 | */ | |
274 | #ifdef HAVE_PRSYSENT_T | |
275 | #define DYNAMIC_SYSCALLS | |
276 | #endif | |
c3f6f71d JM |
277 | |
278 | ||
279 | ||
280 | /* =================== STRUCT PROCINFO "MODULE" =================== */ | |
281 | ||
282 | /* FIXME: this comment will soon be out of date W.R.T. threads. */ | |
283 | ||
284 | /* The procinfo struct is a wrapper to hold all the state information | |
285 | concerning a /proc process. There should be exactly one procinfo | |
286 | for each process, and since GDB currently can debug only one | |
287 | process at a time, that means there should be only one procinfo. | |
288 | All of the LWP's of a process can be accessed indirectly thru the | |
289 | single process procinfo. | |
290 | ||
291 | However, against the day when GDB may debug more than one process, | |
292 | this data structure is kept in a list (which for now will hold no | |
293 | more than one member), and many functions will have a pointer to a | |
294 | procinfo as an argument. | |
295 | ||
296 | There will be a separate procinfo structure for use by the (not yet | |
297 | implemented) "info proc" command, so that we can print useful | |
298 | information about any random process without interfering with the | |
299 | inferior's procinfo information. */ | |
300 | ||
301 | #ifdef NEW_PROC_API | |
302 | /* format strings for /proc paths */ | |
303 | # ifndef CTL_PROC_NAME_FMT | |
304 | # define MAIN_PROC_NAME_FMT "/proc/%d" | |
305 | # define CTL_PROC_NAME_FMT "/proc/%d/ctl" | |
306 | # define AS_PROC_NAME_FMT "/proc/%d/as" | |
307 | # define MAP_PROC_NAME_FMT "/proc/%d/map" | |
308 | # define STATUS_PROC_NAME_FMT "/proc/%d/status" | |
309 | # define MAX_PROC_NAME_SIZE sizeof("/proc/99999/lwp/8096/lstatus") | |
310 | # endif | |
311 | /* the name of the proc status struct depends on the implementation */ | |
312 | typedef pstatus_t gdb_prstatus_t; | |
313 | typedef lwpstatus_t gdb_lwpstatus_t; | |
314 | #else /* ! NEW_PROC_API */ | |
315 | /* format strings for /proc paths */ | |
316 | # ifndef CTL_PROC_NAME_FMT | |
317 | # define MAIN_PROC_NAME_FMT "/proc/%05d" | |
318 | # define CTL_PROC_NAME_FMT "/proc/%05d" | |
319 | # define AS_PROC_NAME_FMT "/proc/%05d" | |
320 | # define MAP_PROC_NAME_FMT "/proc/%05d" | |
321 | # define STATUS_PROC_NAME_FMT "/proc/%05d" | |
322 | # define MAX_PROC_NAME_SIZE sizeof("/proc/ttttppppp") | |
323 | # endif | |
c906108c | 324 | /* the name of the proc status struct depends on the implementation */ |
c5aa993b | 325 | typedef prstatus_t gdb_prstatus_t; |
c3f6f71d JM |
326 | typedef prstatus_t gdb_lwpstatus_t; |
327 | #endif /* NEW_PROC_API */ | |
c906108c | 328 | |
c3f6f71d JM |
329 | typedef struct procinfo { |
330 | struct procinfo *next; | |
331 | int pid; /* Process ID */ | |
332 | int tid; /* Thread/LWP id */ | |
c906108c | 333 | |
c3f6f71d JM |
334 | /* process state */ |
335 | int was_stopped; | |
336 | int ignore_next_sigstop; | |
c906108c | 337 | |
c3f6f71d JM |
338 | /* The following four fd fields may be identical, or may contain |
339 | several different fd's, depending on the version of /proc | |
340 | (old ioctl or new read/write). */ | |
c906108c | 341 | |
c3f6f71d JM |
342 | int ctl_fd; /* File descriptor for /proc control file */ |
343 | /* | |
344 | * The next three file descriptors are actually only needed in the | |
345 | * read/write, multiple-file-descriptor implemenation (NEW_PROC_API). | |
346 | * However, to avoid a bunch of #ifdefs in the code, we will use | |
347 | * them uniformly by (in the case of the ioctl single-file-descriptor | |
348 | * implementation) filling them with copies of the control fd. | |
349 | */ | |
350 | int status_fd; /* File descriptor for /proc status file */ | |
351 | int as_fd; /* File descriptor for /proc as file */ | |
c906108c | 352 | |
c3f6f71d | 353 | char pathname[MAX_PROC_NAME_SIZE]; /* Pathname to /proc entry */ |
c906108c | 354 | |
c3f6f71d | 355 | fltset_t saved_fltset; /* Saved traced hardware fault set */ |
37de36c6 KB |
356 | gdb_sigset_t saved_sigset; /* Saved traced signal set */ |
357 | gdb_sigset_t saved_sighold; /* Saved held signal set */ | |
358 | sysset_t *saved_exitset; /* Saved traced system call exit set */ | |
359 | sysset_t *saved_entryset; /* Saved traced system call entry set */ | |
c906108c | 360 | |
c3f6f71d | 361 | gdb_prstatus_t prstatus; /* Current process status info */ |
c906108c | 362 | |
c3f6f71d JM |
363 | #ifndef NEW_PROC_API |
364 | gdb_fpregset_t fpregset; /* Current floating point registers */ | |
c5aa993b | 365 | #endif |
37de36c6 KB |
366 | |
367 | #ifdef DYNAMIC_SYSCALLS | |
368 | int num_syscalls; /* Total number of syscalls */ | |
369 | char **syscall_names; /* Syscall number to name map */ | |
370 | #endif | |
c3f6f71d JM |
371 | |
372 | struct procinfo *thread_list; | |
c906108c | 373 | |
c3f6f71d JM |
374 | int status_valid : 1; |
375 | int gregs_valid : 1; | |
376 | int fpregs_valid : 1; | |
377 | int threads_valid: 1; | |
378 | } procinfo; | |
c906108c | 379 | |
c3f6f71d | 380 | static char errmsg[128]; /* shared error msg buffer */ |
c906108c | 381 | |
c3f6f71d | 382 | /* Function prototypes for procinfo module: */ |
c906108c | 383 | |
a14ed312 KB |
384 | static procinfo *find_procinfo_or_die (int pid, int tid); |
385 | static procinfo *find_procinfo (int pid, int tid); | |
386 | static procinfo *create_procinfo (int pid, int tid); | |
387 | static void destroy_procinfo (procinfo * p); | |
004527cb | 388 | static void do_destroy_procinfo_cleanup (void *); |
a14ed312 KB |
389 | static void dead_procinfo (procinfo * p, char *msg, int killp); |
390 | static int open_procinfo_files (procinfo * p, int which); | |
391 | static void close_procinfo_files (procinfo * p); | |
37de36c6 KB |
392 | static int sysset_t_size (procinfo *p); |
393 | static sysset_t *sysset_t_alloc (procinfo * pi); | |
394 | #ifdef DYNAMIC_SYSCALLS | |
395 | static void load_syscalls (procinfo *pi); | |
396 | static void free_syscalls (procinfo *pi); | |
397 | static int find_syscall (procinfo *pi, char *name); | |
398 | #endif /* DYNAMIC_SYSCALLS */ | |
c906108c | 399 | |
c3f6f71d JM |
400 | /* The head of the procinfo list: */ |
401 | static procinfo * procinfo_list; | |
c906108c | 402 | |
c3f6f71d JM |
403 | /* |
404 | * Function: find_procinfo | |
405 | * | |
406 | * Search the procinfo list. | |
407 | * | |
408 | * Returns: pointer to procinfo, or NULL if not found. | |
409 | */ | |
c906108c | 410 | |
c3f6f71d | 411 | static procinfo * |
fba45db2 | 412 | find_procinfo (int pid, int tid) |
c5aa993b | 413 | { |
c3f6f71d | 414 | procinfo *pi; |
c906108c | 415 | |
c3f6f71d JM |
416 | for (pi = procinfo_list; pi; pi = pi->next) |
417 | if (pi->pid == pid) | |
418 | break; | |
c906108c | 419 | |
c3f6f71d JM |
420 | if (pi) |
421 | if (tid) | |
422 | { | |
423 | /* Don't check threads_valid. If we're updating the | |
424 | thread_list, we want to find whatever threads are already | |
425 | here. This means that in general it is the caller's | |
426 | responsibility to check threads_valid and update before | |
427 | calling find_procinfo, if the caller wants to find a new | |
428 | thread. */ | |
429 | ||
430 | for (pi = pi->thread_list; pi; pi = pi->next) | |
431 | if (pi->tid == tid) | |
432 | break; | |
433 | } | |
c906108c | 434 | |
c3f6f71d JM |
435 | return pi; |
436 | } | |
c906108c | 437 | |
c3f6f71d JM |
438 | /* |
439 | * Function: find_procinfo_or_die | |
440 | * | |
441 | * Calls find_procinfo, but errors on failure. | |
442 | */ | |
c906108c | 443 | |
c3f6f71d | 444 | static procinfo * |
fba45db2 | 445 | find_procinfo_or_die (int pid, int tid) |
c3f6f71d JM |
446 | { |
447 | procinfo *pi = find_procinfo (pid, tid); | |
c906108c | 448 | |
c3f6f71d | 449 | if (pi == NULL) |
0fda6bd2 JM |
450 | { |
451 | if (tid) | |
452 | error ("procfs: couldn't find pid %d (kernel thread %d) in procinfo list.", | |
453 | pid, tid); | |
454 | else | |
455 | error ("procfs: couldn't find pid %d in procinfo list.", pid); | |
456 | } | |
c3f6f71d JM |
457 | return pi; |
458 | } | |
c906108c | 459 | |
4d1bcd09 KB |
460 | /* open_with_retry() is a wrapper for open(). The appropriate |
461 | open() call is attempted; if unsuccessful, it will be retried as | |
462 | many times as needed for the EAGAIN and EINTR conditions. | |
463 | ||
464 | For other conditions, open_with_retry() will retry the open() a | |
465 | limited number of times. In addition, a short sleep is imposed | |
466 | prior to retrying the open(). The reason for this sleep is to give | |
467 | the kernel a chance to catch up and create the file in question in | |
468 | the event that GDB "wins" the race to open a file before the kernel | |
469 | has created it. */ | |
470 | ||
471 | static int | |
472 | open_with_retry (const char *pathname, int flags) | |
473 | { | |
474 | int retries_remaining, status; | |
475 | ||
476 | retries_remaining = 2; | |
477 | ||
478 | while (1) | |
479 | { | |
480 | status = open (pathname, flags); | |
481 | ||
482 | if (status >= 0 || retries_remaining == 0) | |
483 | break; | |
484 | else if (errno != EINTR && errno != EAGAIN) | |
485 | { | |
486 | retries_remaining--; | |
487 | sleep (1); | |
488 | } | |
489 | } | |
490 | ||
491 | return status; | |
492 | } | |
493 | ||
c3f6f71d JM |
494 | /* |
495 | * Function: open_procinfo_files | |
496 | * | |
497 | * Open the file descriptor for the process or LWP. | |
498 | * ifdef NEW_PROC_API, we only open the control file descriptor; | |
499 | * the others are opened lazily as needed. | |
500 | * else (if not NEW_PROC_API), there is only one real | |
501 | * file descriptor, but we keep multiple copies of it so that | |
502 | * the code that uses them does not have to be #ifdef'd. | |
503 | * | |
504 | * Return: file descriptor, or zero for failure. | |
505 | */ | |
c906108c | 506 | |
c3f6f71d | 507 | enum { FD_CTL, FD_STATUS, FD_AS }; |
c906108c | 508 | |
c3f6f71d | 509 | static int |
fba45db2 | 510 | open_procinfo_files (procinfo *pi, int which) |
c3f6f71d | 511 | { |
0fda6bd2 | 512 | #ifdef NEW_PROC_API |
c3f6f71d | 513 | char tmp[MAX_PROC_NAME_SIZE]; |
0fda6bd2 | 514 | #endif |
c3f6f71d JM |
515 | int fd; |
516 | ||
517 | /* | |
518 | * This function is getting ALMOST long enough to break up into several. | |
519 | * Here is some rationale: | |
520 | * | |
521 | * NEW_PROC_API (Solaris 2.6, Solaris 2.7, Unixware): | |
522 | * There are several file descriptors that may need to be open | |
523 | * for any given process or LWP. The ones we're intereted in are: | |
524 | * - control (ctl) write-only change the state | |
525 | * - status (status) read-only query the state | |
526 | * - address space (as) read/write access memory | |
527 | * - map (map) read-only virtual addr map | |
528 | * Most of these are opened lazily as they are needed. | |
529 | * The pathnames for the 'files' for an LWP look slightly | |
530 | * different from those of a first-class process: | |
531 | * Pathnames for a process (<proc-id>): | |
532 | * /proc/<proc-id>/ctl | |
533 | * /proc/<proc-id>/status | |
534 | * /proc/<proc-id>/as | |
535 | * /proc/<proc-id>/map | |
536 | * Pathnames for an LWP (lwp-id): | |
537 | * /proc/<proc-id>/lwp/<lwp-id>/lwpctl | |
538 | * /proc/<proc-id>/lwp/<lwp-id>/lwpstatus | |
539 | * An LWP has no map or address space file descriptor, since | |
540 | * the memory map and address space are shared by all LWPs. | |
541 | * | |
542 | * Everyone else (Solaris 2.5, Irix, OSF) | |
543 | * There is only one file descriptor for each process or LWP. | |
544 | * For convenience, we copy the same file descriptor into all | |
545 | * three fields of the procinfo struct (ctl_fd, status_fd, and | |
546 | * as_fd, see NEW_PROC_API above) so that code that uses them | |
547 | * doesn't need any #ifdef's. | |
548 | * Pathname for all: | |
549 | * /proc/<proc-id> | |
550 | * | |
551 | * Solaris 2.5 LWP's: | |
552 | * Each LWP has an independent file descriptor, but these | |
553 | * are not obtained via the 'open' system call like the rest: | |
554 | * instead, they're obtained thru an ioctl call (PIOCOPENLWP) | |
555 | * to the file descriptor of the parent process. | |
556 | * | |
557 | * OSF threads: | |
558 | * These do not even have their own independent file descriptor. | |
559 | * All operations are carried out on the file descriptor of the | |
560 | * parent process. Therefore we just call open again for each | |
561 | * thread, getting a new handle for the same 'file'. | |
562 | */ | |
563 | ||
564 | #ifdef NEW_PROC_API | |
565 | /* | |
566 | * In this case, there are several different file descriptors that | |
567 | * we might be asked to open. The control file descriptor will be | |
568 | * opened early, but the others will be opened lazily as they are | |
569 | * needed. | |
570 | */ | |
571 | ||
572 | strcpy (tmp, pi->pathname); | |
573 | switch (which) { /* which file descriptor to open? */ | |
574 | case FD_CTL: | |
575 | if (pi->tid) | |
576 | strcat (tmp, "/lwpctl"); | |
577 | else | |
578 | strcat (tmp, "/ctl"); | |
4d1bcd09 | 579 | fd = open_with_retry (tmp, O_WRONLY); |
c3f6f71d JM |
580 | if (fd <= 0) |
581 | return 0; /* fail */ | |
582 | pi->ctl_fd = fd; | |
583 | break; | |
584 | case FD_AS: | |
585 | if (pi->tid) | |
586 | return 0; /* there is no 'as' file descriptor for an lwp */ | |
587 | strcat (tmp, "/as"); | |
4d1bcd09 | 588 | fd = open_with_retry (tmp, O_RDWR); |
c3f6f71d JM |
589 | if (fd <= 0) |
590 | return 0; /* fail */ | |
591 | pi->as_fd = fd; | |
592 | break; | |
593 | case FD_STATUS: | |
594 | if (pi->tid) | |
595 | strcat (tmp, "/lwpstatus"); | |
596 | else | |
597 | strcat (tmp, "/status"); | |
4d1bcd09 | 598 | fd = open_with_retry (tmp, O_RDONLY); |
c3f6f71d JM |
599 | if (fd <= 0) |
600 | return 0; /* fail */ | |
601 | pi->status_fd = fd; | |
602 | break; | |
603 | default: | |
604 | return 0; /* unknown file descriptor */ | |
605 | } | |
606 | #else /* not NEW_PROC_API */ | |
607 | /* | |
608 | * In this case, there is only one file descriptor for each procinfo | |
609 | * (ie. each process or LWP). In fact, only the file descriptor for | |
610 | * the process can actually be opened by an 'open' system call. | |
611 | * The ones for the LWPs have to be obtained thru an IOCTL call | |
612 | * on the process's file descriptor. | |
613 | * | |
614 | * For convenience, we copy each procinfo's single file descriptor | |
615 | * into all of the fields occupied by the several file descriptors | |
616 | * of the NEW_PROC_API implementation. That way, the code that uses | |
617 | * them can be written without ifdefs. | |
618 | */ | |
619 | ||
620 | ||
621 | #ifdef PIOCTSTATUS /* OSF */ | |
4d1bcd09 KB |
622 | /* Only one FD; just open it. */ |
623 | if ((fd = open_with_retry (pi->pathname, O_RDWR)) == 0) | |
c3f6f71d JM |
624 | return 0; |
625 | #else /* Sol 2.5, Irix, other? */ | |
626 | if (pi->tid == 0) /* Master procinfo for the process */ | |
627 | { | |
4d1bcd09 | 628 | fd = open_with_retry (pi->pathname, O_RDWR); |
c3f6f71d JM |
629 | if (fd <= 0) |
630 | return 0; /* fail */ | |
631 | } | |
632 | else /* LWP thread procinfo */ | |
633 | { | |
634 | #ifdef PIOCOPENLWP /* Sol 2.5, thread/LWP */ | |
635 | procinfo *process; | |
636 | int lwpid = pi->tid; | |
637 | ||
638 | /* Find the procinfo for the entire process. */ | |
639 | if ((process = find_procinfo (pi->pid, 0)) == NULL) | |
640 | return 0; /* fail */ | |
641 | ||
642 | /* Now obtain the file descriptor for the LWP. */ | |
643 | if ((fd = ioctl (process->ctl_fd, PIOCOPENLWP, &lwpid)) <= 0) | |
644 | return 0; /* fail */ | |
645 | #else /* Irix, other? */ | |
646 | return 0; /* Don't know how to open threads */ | |
647 | #endif /* Sol 2.5 PIOCOPENLWP */ | |
648 | } | |
649 | #endif /* OSF PIOCTSTATUS */ | |
650 | pi->ctl_fd = pi->as_fd = pi->status_fd = fd; | |
651 | #endif /* NEW_PROC_API */ | |
c906108c | 652 | |
c3f6f71d JM |
653 | return 1; /* success */ |
654 | } | |
c906108c | 655 | |
c3f6f71d JM |
656 | /* |
657 | * Function: create_procinfo | |
658 | * | |
659 | * Allocate a data structure and link it into the procinfo list. | |
02d5252f | 660 | * (First tries to find a pre-existing one (FIXME: why?) |
c3f6f71d JM |
661 | * |
662 | * Return: pointer to new procinfo struct. | |
663 | */ | |
c906108c | 664 | |
c3f6f71d | 665 | static procinfo * |
fba45db2 | 666 | create_procinfo (int pid, int tid) |
c3f6f71d JM |
667 | { |
668 | procinfo *pi, *parent; | |
c906108c | 669 | |
0d06e24b | 670 | if ((pi = find_procinfo (pid, tid))) |
c3f6f71d | 671 | return pi; /* Already exists, nothing to do. */ |
c906108c | 672 | |
c3f6f71d JM |
673 | /* find parent before doing malloc, to save having to cleanup */ |
674 | if (tid != 0) | |
675 | parent = find_procinfo_or_die (pid, 0); /* FIXME: should I | |
676 | create it if it | |
677 | doesn't exist yet? */ | |
c906108c | 678 | |
c3f6f71d JM |
679 | pi = (procinfo *) xmalloc (sizeof (procinfo)); |
680 | memset (pi, 0, sizeof (procinfo)); | |
681 | pi->pid = pid; | |
682 | pi->tid = tid; | |
c906108c | 683 | |
37de36c6 KB |
684 | #ifdef DYNAMIC_SYSCALLS |
685 | load_syscalls (pi); | |
686 | #endif | |
687 | ||
1d5e0602 KB |
688 | pi->saved_entryset = sysset_t_alloc (pi); |
689 | pi->saved_exitset = sysset_t_alloc (pi); | |
690 | ||
c3f6f71d JM |
691 | /* Chain into list. */ |
692 | if (tid == 0) | |
693 | { | |
694 | sprintf (pi->pathname, MAIN_PROC_NAME_FMT, pid); | |
695 | pi->next = procinfo_list; | |
696 | procinfo_list = pi; | |
697 | } | |
698 | else | |
699 | { | |
700 | #ifdef NEW_PROC_API | |
701 | sprintf (pi->pathname, "/proc/%05d/lwp/%d", pid, tid); | |
702 | #else | |
703 | sprintf (pi->pathname, MAIN_PROC_NAME_FMT, pid); | |
704 | #endif | |
705 | pi->next = parent->thread_list; | |
706 | parent->thread_list = pi; | |
707 | } | |
708 | return pi; | |
709 | } | |
c906108c | 710 | |
c3f6f71d JM |
711 | /* |
712 | * Function: close_procinfo_files | |
713 | * | |
714 | * Close all file descriptors associated with the procinfo | |
715 | */ | |
c906108c | 716 | |
c3f6f71d | 717 | static void |
fba45db2 | 718 | close_procinfo_files (procinfo *pi) |
c3f6f71d JM |
719 | { |
720 | if (pi->ctl_fd > 0) | |
721 | close (pi->ctl_fd); | |
722 | #ifdef NEW_PROC_API | |
723 | if (pi->as_fd > 0) | |
724 | close (pi->as_fd); | |
725 | if (pi->status_fd > 0) | |
726 | close (pi->status_fd); | |
727 | #endif | |
728 | pi->ctl_fd = pi->as_fd = pi->status_fd = 0; | |
729 | } | |
c906108c | 730 | |
c3f6f71d JM |
731 | /* |
732 | * Function: destroy_procinfo | |
733 | * | |
734 | * Destructor function. Close, unlink and deallocate the object. | |
735 | */ | |
c906108c | 736 | |
c3f6f71d | 737 | static void |
fba45db2 | 738 | destroy_one_procinfo (procinfo **list, procinfo *pi) |
c3f6f71d JM |
739 | { |
740 | procinfo *ptr; | |
741 | ||
742 | /* Step one: unlink the procinfo from its list */ | |
743 | if (pi == *list) | |
744 | *list = pi->next; | |
745 | else | |
746 | for (ptr = *list; ptr; ptr = ptr->next) | |
747 | if (ptr->next == pi) | |
748 | { | |
749 | ptr->next = pi->next; | |
750 | break; | |
751 | } | |
7a292a7a | 752 | |
c3f6f71d JM |
753 | /* Step two: close any open file descriptors */ |
754 | close_procinfo_files (pi); | |
7a292a7a | 755 | |
c3f6f71d | 756 | /* Step three: free the memory. */ |
37de36c6 KB |
757 | #ifdef DYNAMIC_SYSCALLS |
758 | free_syscalls (pi); | |
759 | #endif | |
1d5e0602 KB |
760 | xfree (pi->saved_entryset); |
761 | xfree (pi->saved_exitset); | |
b8c9b27d | 762 | xfree (pi); |
c3f6f71d | 763 | } |
c906108c | 764 | |
c3f6f71d | 765 | static void |
fba45db2 | 766 | destroy_procinfo (procinfo *pi) |
c3f6f71d JM |
767 | { |
768 | procinfo *tmp; | |
c906108c | 769 | |
c3f6f71d JM |
770 | if (pi->tid != 0) /* destroy a thread procinfo */ |
771 | { | |
772 | tmp = find_procinfo (pi->pid, 0); /* find the parent process */ | |
773 | destroy_one_procinfo (&tmp->thread_list, pi); | |
774 | } | |
775 | else /* destroy a process procinfo and all its threads */ | |
776 | { | |
777 | /* First destroy the children, if any; */ | |
778 | while (pi->thread_list != NULL) | |
779 | destroy_one_procinfo (&pi->thread_list, pi->thread_list); | |
780 | /* Then destroy the parent. Genocide!!! */ | |
781 | destroy_one_procinfo (&procinfo_list, pi); | |
782 | } | |
783 | } | |
c906108c | 784 | |
004527cb AC |
785 | static void |
786 | do_destroy_procinfo_cleanup (void *pi) | |
787 | { | |
788 | destroy_procinfo (pi); | |
789 | } | |
790 | ||
c3f6f71d | 791 | enum { NOKILL, KILL }; |
c906108c | 792 | |
c3f6f71d JM |
793 | /* |
794 | * Function: dead_procinfo | |
795 | * | |
796 | * To be called on a non_recoverable error for a procinfo. | |
797 | * Prints error messages, optionally sends a SIGKILL to the process, | |
798 | * then destroys the data structure. | |
799 | */ | |
c906108c | 800 | |
c3f6f71d | 801 | static void |
fba45db2 | 802 | dead_procinfo (procinfo *pi, char *msg, int kill_p) |
c3f6f71d JM |
803 | { |
804 | char procfile[80]; | |
c906108c | 805 | |
c3f6f71d JM |
806 | if (pi->pathname) |
807 | { | |
808 | print_sys_errmsg (pi->pathname, errno); | |
809 | } | |
810 | else | |
811 | { | |
812 | sprintf (procfile, "process %d", pi->pid); | |
813 | print_sys_errmsg (procfile, errno); | |
814 | } | |
815 | if (kill_p == KILL) | |
816 | kill (pi->pid, SIGKILL); | |
c906108c | 817 | |
c3f6f71d JM |
818 | destroy_procinfo (pi); |
819 | error (msg); | |
820 | } | |
c906108c | 821 | |
37de36c6 KB |
822 | /* |
823 | * Function: sysset_t_size | |
824 | * | |
825 | * Returns the (complete) size of a sysset_t struct. Normally, this | |
826 | * is just sizeof (syset_t), but in the case of Monterey/64, the actual | |
827 | * size of sysset_t isn't known until runtime. | |
828 | */ | |
829 | ||
830 | static int | |
831 | sysset_t_size (procinfo * pi) | |
832 | { | |
833 | #ifndef DYNAMIC_SYSCALLS | |
834 | return sizeof (sysset_t); | |
835 | #else | |
836 | return sizeof (sysset_t) - sizeof (uint64_t) | |
837 | + sizeof (uint64_t) * ((pi->num_syscalls + (8 * sizeof (uint64_t) - 1)) | |
838 | / (8 * sizeof (uint64_t))); | |
839 | #endif | |
840 | } | |
841 | ||
842 | /* Function: sysset_t_alloc | |
843 | ||
844 | Allocate and (partially) initialize a sysset_t struct. */ | |
845 | ||
846 | static sysset_t * | |
847 | sysset_t_alloc (procinfo * pi) | |
848 | { | |
849 | sysset_t *ret; | |
850 | int size = sysset_t_size (pi); | |
851 | ret = xmalloc (size); | |
852 | #ifdef DYNAMIC_SYSCALLS | |
853 | ret->pr_size = (pi->num_syscalls + (8 * sizeof (uint64_t) - 1)) | |
854 | / (8 * sizeof (uint64_t)); | |
855 | #endif | |
856 | return ret; | |
857 | } | |
858 | ||
859 | #ifdef DYNAMIC_SYSCALLS | |
860 | ||
861 | /* Function: load_syscalls | |
862 | ||
863 | Extract syscall numbers and names from /proc/<pid>/sysent. Initialize | |
864 | pi->num_syscalls with the number of syscalls and pi->syscall_names | |
865 | with the names. (Certain numbers may be skipped in which case the | |
866 | names for these numbers will be left as NULL.) */ | |
867 | ||
868 | #define MAX_SYSCALL_NAME_LENGTH 256 | |
869 | #define MAX_SYSCALLS 65536 | |
870 | ||
871 | static void | |
872 | load_syscalls (procinfo *pi) | |
873 | { | |
874 | char pathname[MAX_PROC_NAME_SIZE]; | |
875 | int sysent_fd; | |
876 | prsysent_t header; | |
877 | prsyscall_t *syscalls; | |
878 | int i, size, maxcall; | |
879 | ||
880 | pi->num_syscalls = 0; | |
881 | pi->syscall_names = 0; | |
882 | ||
883 | /* Open the file descriptor for the sysent file */ | |
884 | sprintf (pathname, "/proc/%d/sysent", pi->pid); | |
4d1bcd09 | 885 | sysent_fd = open_with_retry (pathname, O_RDONLY); |
37de36c6 KB |
886 | if (sysent_fd < 0) |
887 | { | |
888 | error ("load_syscalls: Can't open /proc/%d/sysent", pi->pid); | |
889 | } | |
890 | ||
891 | size = sizeof header - sizeof (prsyscall_t); | |
892 | if (read (sysent_fd, &header, size) != size) | |
893 | { | |
894 | error ("load_syscalls: Error reading /proc/%d/sysent", pi->pid); | |
895 | } | |
896 | ||
897 | if (header.pr_nsyscalls == 0) | |
898 | { | |
899 | error ("load_syscalls: /proc/%d/sysent contains no syscalls!", pi->pid); | |
900 | } | |
901 | ||
902 | size = header.pr_nsyscalls * sizeof (prsyscall_t); | |
903 | syscalls = xmalloc (size); | |
904 | ||
905 | if (read (sysent_fd, syscalls, size) != size) | |
906 | { | |
907 | xfree (syscalls); | |
908 | error ("load_syscalls: Error reading /proc/%d/sysent", pi->pid); | |
909 | } | |
910 | ||
911 | /* Find maximum syscall number. This may not be the same as | |
912 | pr_nsyscalls since that value refers to the number of entries | |
913 | in the table. (Also, the docs indicate that some system | |
914 | call numbers may be skipped.) */ | |
915 | ||
916 | maxcall = syscalls[0].pr_number; | |
917 | ||
918 | for (i = 1; i < header.pr_nsyscalls; i++) | |
919 | if (syscalls[i].pr_number > maxcall | |
920 | && syscalls[i].pr_nameoff > 0 | |
921 | && syscalls[i].pr_number < MAX_SYSCALLS) | |
922 | maxcall = syscalls[i].pr_number; | |
923 | ||
924 | pi->num_syscalls = maxcall+1; | |
925 | pi->syscall_names = xmalloc (pi->num_syscalls * sizeof (char *)); | |
926 | ||
927 | for (i = 0; i < pi->num_syscalls; i++) | |
928 | pi->syscall_names[i] = NULL; | |
929 | ||
930 | /* Read the syscall names in */ | |
931 | for (i = 0; i < header.pr_nsyscalls; i++) | |
932 | { | |
933 | char namebuf[MAX_SYSCALL_NAME_LENGTH]; | |
934 | int nread; | |
935 | int callnum; | |
936 | ||
937 | if (syscalls[i].pr_number >= MAX_SYSCALLS | |
938 | || syscalls[i].pr_number < 0 | |
939 | || syscalls[i].pr_nameoff <= 0 | |
940 | || (lseek (sysent_fd, (off_t) syscalls[i].pr_nameoff, SEEK_SET) | |
941 | != (off_t) syscalls[i].pr_nameoff)) | |
942 | continue; | |
943 | ||
944 | nread = read (sysent_fd, namebuf, sizeof namebuf); | |
945 | if (nread <= 0) | |
946 | continue; | |
947 | ||
948 | callnum = syscalls[i].pr_number; | |
949 | ||
950 | if (pi->syscall_names[callnum] != NULL) | |
951 | { | |
952 | /* FIXME: Generate warning */ | |
953 | continue; | |
954 | } | |
955 | ||
956 | namebuf[nread-1] = '\0'; | |
957 | size = strlen (namebuf) + 1; | |
958 | pi->syscall_names[callnum] = xmalloc (size); | |
959 | strncpy (pi->syscall_names[callnum], namebuf, size-1); | |
960 | pi->syscall_names[callnum][size-1] = '\0'; | |
961 | } | |
962 | ||
963 | close (sysent_fd); | |
964 | xfree (syscalls); | |
965 | } | |
966 | ||
967 | /* Function: free_syscalls | |
968 | ||
969 | Free the space allocated for the syscall names from the procinfo | |
970 | structure. */ | |
971 | ||
972 | static void | |
973 | free_syscalls (procinfo *pi) | |
974 | { | |
975 | if (pi->syscall_names) | |
976 | { | |
977 | int i; | |
978 | ||
979 | for (i = 0; i < pi->num_syscalls; i++) | |
980 | if (pi->syscall_names[i] != NULL) | |
981 | xfree (pi->syscall_names[i]); | |
982 | ||
983 | xfree (pi->syscall_names); | |
984 | pi->syscall_names = 0; | |
985 | } | |
986 | } | |
987 | ||
988 | /* Function: find_syscall | |
989 | ||
990 | Given a name, look up (and return) the corresponding syscall number. | |
991 | If no match is found, return -1. */ | |
992 | ||
993 | static int | |
994 | find_syscall (procinfo *pi, char *name) | |
995 | { | |
996 | int i; | |
997 | for (i = 0; i < pi->num_syscalls; i++) | |
998 | { | |
999 | if (pi->syscall_names[i] && strcmp (name, pi->syscall_names[i]) == 0) | |
1000 | return i; | |
1001 | } | |
1002 | return -1; | |
1003 | } | |
1004 | #endif | |
1005 | ||
c3f6f71d | 1006 | /* =================== END, STRUCT PROCINFO "MODULE" =================== */ |
c906108c | 1007 | |
c3f6f71d | 1008 | /* =================== /proc "MODULE" =================== */ |
c906108c | 1009 | |
c3f6f71d JM |
1010 | /* |
1011 | * This "module" is the interface layer between the /proc system API | |
1012 | * and the gdb target vector functions. This layer consists of | |
1013 | * access functions that encapsulate each of the basic operations | |
1014 | * that we need to use from the /proc API. | |
1015 | * | |
1016 | * The main motivation for this layer is to hide the fact that | |
1017 | * there are two very different implementations of the /proc API. | |
1018 | * Rather than have a bunch of #ifdefs all thru the gdb target vector | |
1019 | * functions, we do our best to hide them all in here. | |
1020 | */ | |
c906108c | 1021 | |
a14ed312 KB |
1022 | int proc_get_status (procinfo * pi); |
1023 | long proc_flags (procinfo * pi); | |
1024 | int proc_why (procinfo * pi); | |
1025 | int proc_what (procinfo * pi); | |
1026 | int proc_set_run_on_last_close (procinfo * pi); | |
1027 | int proc_unset_run_on_last_close (procinfo * pi); | |
1028 | int proc_set_inherit_on_fork (procinfo * pi); | |
1029 | int proc_unset_inherit_on_fork (procinfo * pi); | |
1030 | int proc_set_async (procinfo * pi); | |
1031 | int proc_unset_async (procinfo * pi); | |
1032 | int proc_stop_process (procinfo * pi); | |
1033 | int proc_trace_signal (procinfo * pi, int signo); | |
1034 | int proc_ignore_signal (procinfo * pi, int signo); | |
1035 | int proc_clear_current_fault (procinfo * pi); | |
1036 | int proc_set_current_signal (procinfo * pi, int signo); | |
1037 | int proc_clear_current_signal (procinfo * pi); | |
1038 | int proc_set_gregs (procinfo * pi); | |
1039 | int proc_set_fpregs (procinfo * pi); | |
1040 | int proc_wait_for_stop (procinfo * pi); | |
1041 | int proc_run_process (procinfo * pi, int step, int signo); | |
1042 | int proc_kill (procinfo * pi, int signo); | |
1043 | int proc_parent_pid (procinfo * pi); | |
1044 | int proc_get_nthreads (procinfo * pi); | |
1045 | int proc_get_current_thread (procinfo * pi); | |
37de36c6 | 1046 | int proc_set_held_signals (procinfo * pi, gdb_sigset_t * sighold); |
a14ed312 KB |
1047 | int proc_set_traced_sysexit (procinfo * pi, sysset_t * sysset); |
1048 | int proc_set_traced_sysentry (procinfo * pi, sysset_t * sysset); | |
1049 | int proc_set_traced_faults (procinfo * pi, fltset_t * fltset); | |
37de36c6 | 1050 | int proc_set_traced_signals (procinfo * pi, gdb_sigset_t * sigset); |
a14ed312 KB |
1051 | |
1052 | int proc_update_threads (procinfo * pi); | |
1053 | int proc_iterate_over_threads (procinfo * pi, | |
8ab86381 KB |
1054 | int (*func) (procinfo *, procinfo *, void *), |
1055 | void *ptr); | |
a14ed312 KB |
1056 | |
1057 | gdb_gregset_t *proc_get_gregs (procinfo * pi); | |
1058 | gdb_fpregset_t *proc_get_fpregs (procinfo * pi); | |
1059 | sysset_t *proc_get_traced_sysexit (procinfo * pi, sysset_t * save); | |
1060 | sysset_t *proc_get_traced_sysentry (procinfo * pi, sysset_t * save); | |
1061 | fltset_t *proc_get_traced_faults (procinfo * pi, fltset_t * save); | |
37de36c6 KB |
1062 | gdb_sigset_t *proc_get_traced_signals (procinfo * pi, gdb_sigset_t * save); |
1063 | gdb_sigset_t *proc_get_held_signals (procinfo * pi, gdb_sigset_t * save); | |
1064 | gdb_sigset_t *proc_get_pending_signals (procinfo * pi, gdb_sigset_t * save); | |
1065 | gdb_sigaction_t *proc_get_signal_actions (procinfo * pi, gdb_sigaction_t *save); | |
a14ed312 KB |
1066 | |
1067 | void proc_warn (procinfo * pi, char *func, int line); | |
1068 | void proc_error (procinfo * pi, char *func, int line); | |
c906108c | 1069 | |
c3f6f71d | 1070 | void |
fba45db2 | 1071 | proc_warn (procinfo *pi, char *func, int line) |
c3f6f71d JM |
1072 | { |
1073 | sprintf (errmsg, "procfs: %s line %d, %s", func, line, pi->pathname); | |
1074 | print_sys_errmsg (errmsg, errno); | |
1075 | } | |
c906108c | 1076 | |
c3f6f71d | 1077 | void |
fba45db2 | 1078 | proc_error (procinfo *pi, char *func, int line) |
c3f6f71d JM |
1079 | { |
1080 | sprintf (errmsg, "procfs: %s line %d, %s", func, line, pi->pathname); | |
1081 | perror_with_name (errmsg); | |
1082 | } | |
c906108c | 1083 | |
c3f6f71d JM |
1084 | /* |
1085 | * Function: proc_get_status | |
1086 | * | |
1087 | * Updates the status struct in the procinfo. | |
1088 | * There is a 'valid' flag, to let other functions know when | |
1089 | * this function needs to be called (so the status is only | |
1090 | * read when it is needed). The status file descriptor is | |
1091 | * also only opened when it is needed. | |
1092 | * | |
1093 | * Return: non-zero for success, zero for failure. | |
1094 | */ | |
c906108c | 1095 | |
c3f6f71d | 1096 | int |
fba45db2 | 1097 | proc_get_status (procinfo *pi) |
c3f6f71d JM |
1098 | { |
1099 | /* Status file descriptor is opened "lazily" */ | |
1100 | if (pi->status_fd == 0 && | |
1101 | open_procinfo_files (pi, FD_STATUS) == 0) | |
1102 | { | |
1103 | pi->status_valid = 0; | |
1104 | return 0; | |
1105 | } | |
c906108c | 1106 | |
c3f6f71d JM |
1107 | #ifdef NEW_PROC_API |
1108 | if (lseek (pi->status_fd, 0, SEEK_SET) < 0) | |
1109 | pi->status_valid = 0; /* fail */ | |
1110 | else | |
1111 | { | |
1112 | /* Sigh... I have to read a different data structure, | |
1113 | depending on whether this is a main process or an LWP. */ | |
1114 | if (pi->tid) | |
1115 | pi->status_valid = (read (pi->status_fd, | |
1116 | (char *) &pi->prstatus.pr_lwp, | |
1117 | sizeof (lwpstatus_t)) | |
1118 | == sizeof (lwpstatus_t)); | |
1119 | else | |
1120 | { | |
1121 | pi->status_valid = (read (pi->status_fd, | |
1122 | (char *) &pi->prstatus, | |
1123 | sizeof (gdb_prstatus_t)) | |
1124 | == sizeof (gdb_prstatus_t)); | |
1125 | #if 0 /*def UNIXWARE*/ | |
1126 | if (pi->status_valid && | |
1127 | (pi->prstatus.pr_lwp.pr_flags & PR_ISTOP) && | |
1128 | pi->prstatus.pr_lwp.pr_why == PR_REQUESTED) | |
1129 | /* Unixware peculiarity -- read the damn thing again! */ | |
1130 | pi->status_valid = (read (pi->status_fd, | |
1131 | (char *) &pi->prstatus, | |
1132 | sizeof (gdb_prstatus_t)) | |
1133 | == sizeof (gdb_prstatus_t)); | |
1134 | #endif /* UNIXWARE */ | |
1135 | } | |
1136 | } | |
1137 | #else /* ioctl method */ | |
1138 | #ifdef PIOCTSTATUS /* osf */ | |
1139 | if (pi->tid == 0) /* main process */ | |
1140 | { | |
1141 | /* Just read the danged status. Now isn't that simple? */ | |
1142 | pi->status_valid = | |
1143 | (ioctl (pi->status_fd, PIOCSTATUS, &pi->prstatus) >= 0); | |
1144 | } | |
1145 | else | |
1146 | { | |
1147 | int win; | |
1148 | struct { | |
1149 | long pr_count; | |
1150 | tid_t pr_error_thread; | |
1151 | struct prstatus status; | |
1152 | } thread_status; | |
1153 | ||
1154 | thread_status.pr_count = 1; | |
1155 | thread_status.status.pr_tid = pi->tid; | |
1156 | win = (ioctl (pi->status_fd, PIOCTSTATUS, &thread_status) >= 0); | |
1157 | if (win) | |
1158 | { | |
1159 | memcpy (&pi->prstatus, &thread_status.status, | |
1160 | sizeof (pi->prstatus)); | |
1161 | pi->status_valid = 1; | |
1162 | } | |
1163 | } | |
1164 | #else | |
1165 | /* Just read the danged status. Now isn't that simple? */ | |
1166 | pi->status_valid = (ioctl (pi->status_fd, PIOCSTATUS, &pi->prstatus) >= 0); | |
1167 | #endif | |
1168 | #endif | |
c906108c | 1169 | |
c3f6f71d JM |
1170 | if (pi->status_valid) |
1171 | { | |
1172 | PROC_PRETTYFPRINT_STATUS (proc_flags (pi), | |
1173 | proc_why (pi), | |
1174 | proc_what (pi), | |
1175 | proc_get_current_thread (pi)); | |
1176 | } | |
c906108c | 1177 | |
c3f6f71d JM |
1178 | /* The status struct includes general regs, so mark them valid too */ |
1179 | pi->gregs_valid = pi->status_valid; | |
1180 | #ifdef NEW_PROC_API | |
1181 | /* In the read/write multiple-fd model, | |
1182 | the status struct includes the fp regs too, so mark them valid too */ | |
1183 | pi->fpregs_valid = pi->status_valid; | |
1184 | #endif | |
1185 | return pi->status_valid; /* True if success, false if failure. */ | |
1186 | } | |
c906108c | 1187 | |
c3f6f71d JM |
1188 | /* |
1189 | * Function: proc_flags | |
1190 | * | |
1191 | * returns the process flags (pr_flags field). | |
1192 | */ | |
1193 | ||
1194 | long | |
fba45db2 | 1195 | proc_flags (procinfo *pi) |
c3f6f71d JM |
1196 | { |
1197 | if (!pi->status_valid) | |
1198 | if (!proc_get_status (pi)) | |
1199 | return 0; /* FIXME: not a good failure value (but what is?) */ | |
c906108c | 1200 | |
c3f6f71d | 1201 | #ifdef NEW_PROC_API |
0d06e24b JM |
1202 | # ifdef UNIXWARE |
1203 | /* UnixWare 7.1 puts process status flags, e.g. PR_ASYNC, in | |
1204 | pstatus_t and LWP status flags, e.g. PR_STOPPED, in lwpstatus_t. | |
1205 | The two sets of flags don't overlap. */ | |
1206 | return pi->prstatus.pr_flags | pi->prstatus.pr_lwp.pr_flags; | |
1207 | # else | |
c3f6f71d | 1208 | return pi->prstatus.pr_lwp.pr_flags; |
0d06e24b | 1209 | # endif |
c3f6f71d JM |
1210 | #else |
1211 | return pi->prstatus.pr_flags; | |
1212 | #endif | |
1213 | } | |
c906108c | 1214 | |
c3f6f71d JM |
1215 | /* |
1216 | * Function: proc_why | |
1217 | * | |
1218 | * returns the pr_why field (why the process stopped). | |
1219 | */ | |
c906108c | 1220 | |
c3f6f71d | 1221 | int |
fba45db2 | 1222 | proc_why (procinfo *pi) |
c3f6f71d JM |
1223 | { |
1224 | if (!pi->status_valid) | |
1225 | if (!proc_get_status (pi)) | |
1226 | return 0; /* FIXME: not a good failure value (but what is?) */ | |
c906108c | 1227 | |
c3f6f71d JM |
1228 | #ifdef NEW_PROC_API |
1229 | return pi->prstatus.pr_lwp.pr_why; | |
1230 | #else | |
1231 | return pi->prstatus.pr_why; | |
1232 | #endif | |
1233 | } | |
c906108c | 1234 | |
c3f6f71d JM |
1235 | /* |
1236 | * Function: proc_what | |
1237 | * | |
1238 | * returns the pr_what field (details of why the process stopped). | |
1239 | */ | |
c906108c | 1240 | |
c3f6f71d | 1241 | int |
fba45db2 | 1242 | proc_what (procinfo *pi) |
c3f6f71d JM |
1243 | { |
1244 | if (!pi->status_valid) | |
1245 | if (!proc_get_status (pi)) | |
1246 | return 0; /* FIXME: not a good failure value (but what is?) */ | |
c906108c | 1247 | |
c3f6f71d JM |
1248 | #ifdef NEW_PROC_API |
1249 | return pi->prstatus.pr_lwp.pr_what; | |
1250 | #else | |
1251 | return pi->prstatus.pr_what; | |
c906108c | 1252 | #endif |
c3f6f71d | 1253 | } |
c906108c | 1254 | |
c3f6f71d JM |
1255 | #ifndef PIOCSSPCACT /* The following is not supported on OSF. */ |
1256 | /* | |
1257 | * Function: proc_nsysarg | |
1258 | * | |
1259 | * returns the pr_nsysarg field (number of args to the current syscall). | |
1260 | */ | |
1261 | ||
1262 | int | |
fba45db2 | 1263 | proc_nsysarg (procinfo *pi) |
c3f6f71d JM |
1264 | { |
1265 | if (!pi->status_valid) | |
1266 | if (!proc_get_status (pi)) | |
1267 | return 0; | |
1268 | ||
1269 | #ifdef NEW_PROC_API | |
1270 | return pi->prstatus.pr_lwp.pr_nsysarg; | |
1271 | #else | |
1272 | return pi->prstatus.pr_nsysarg; | |
c906108c | 1273 | #endif |
c3f6f71d | 1274 | } |
c906108c | 1275 | |
c3f6f71d JM |
1276 | /* |
1277 | * Function: proc_sysargs | |
1278 | * | |
1279 | * returns the pr_sysarg field (pointer to the arguments of current syscall). | |
1280 | */ | |
c906108c | 1281 | |
c3f6f71d | 1282 | long * |
fba45db2 | 1283 | proc_sysargs (procinfo *pi) |
c3f6f71d JM |
1284 | { |
1285 | if (!pi->status_valid) | |
1286 | if (!proc_get_status (pi)) | |
1287 | return NULL; | |
1288 | ||
1289 | #ifdef NEW_PROC_API | |
1290 | return (long *) &pi->prstatus.pr_lwp.pr_sysarg; | |
1291 | #else | |
1292 | return (long *) &pi->prstatus.pr_sysarg; | |
1293 | #endif | |
1294 | } | |
c906108c | 1295 | |
c3f6f71d JM |
1296 | /* |
1297 | * Function: proc_syscall | |
1298 | * | |
1299 | * returns the pr_syscall field (id of current syscall if we are in one). | |
1300 | */ | |
c906108c | 1301 | |
c3f6f71d | 1302 | int |
fba45db2 | 1303 | proc_syscall (procinfo *pi) |
c3f6f71d JM |
1304 | { |
1305 | if (!pi->status_valid) | |
1306 | if (!proc_get_status (pi)) | |
1307 | return 0; | |
1308 | ||
1309 | #ifdef NEW_PROC_API | |
1310 | return pi->prstatus.pr_lwp.pr_syscall; | |
1311 | #else | |
1312 | return pi->prstatus.pr_syscall; | |
1313 | #endif | |
1314 | } | |
1315 | #endif /* PIOCSSPCACT */ | |
c906108c | 1316 | |
c3f6f71d JM |
1317 | /* |
1318 | * Function: proc_cursig: | |
1319 | * | |
1320 | * returns the pr_cursig field (current signal). | |
1321 | */ | |
c906108c | 1322 | |
c3f6f71d JM |
1323 | long |
1324 | proc_cursig (struct procinfo *pi) | |
1325 | { | |
1326 | if (!pi->status_valid) | |
1327 | if (!proc_get_status (pi)) | |
1328 | return 0; /* FIXME: not a good failure value (but what is?) */ | |
c906108c | 1329 | |
c3f6f71d JM |
1330 | #ifdef NEW_PROC_API |
1331 | return pi->prstatus.pr_lwp.pr_cursig; | |
1332 | #else | |
1333 | return pi->prstatus.pr_cursig; | |
1334 | #endif | |
1335 | } | |
c906108c | 1336 | |
c3f6f71d | 1337 | /* |
0d06e24b | 1338 | * Function: proc_modify_flag |
c3f6f71d JM |
1339 | * |
1340 | * === I appologize for the messiness of this function. | |
1341 | * === This is an area where the different versions of | |
1342 | * === /proc are more inconsistent than usual. MVS | |
1343 | * | |
1344 | * Set or reset any of the following process flags: | |
1345 | * PR_FORK -- forked child will inherit trace flags | |
1346 | * PR_RLC -- traced process runs when last /proc file closed. | |
0d06e24b | 1347 | * PR_KLC -- traced process is killed when last /proc file closed. |
c3f6f71d JM |
1348 | * PR_ASYNC -- LWP's get to run/stop independently. |
1349 | * | |
1350 | * There are three methods for doing this function: | |
1351 | * 1) Newest: read/write [PCSET/PCRESET/PCUNSET] | |
1352 | * [Sol6, Sol7, UW] | |
1353 | * 2) Middle: PIOCSET/PIOCRESET | |
1354 | * [Irix, Sol5] | |
1355 | * 3) Oldest: PIOCSFORK/PIOCRFORK/PIOCSRLC/PIOCRRLC | |
1356 | * [OSF, Sol5] | |
1357 | * | |
1358 | * Note: Irix does not define PR_ASYNC. | |
0d06e24b JM |
1359 | * Note: OSF does not define PR_KLC. |
1360 | * Note: OSF is the only one that can ONLY use the oldest method. | |
c3f6f71d JM |
1361 | * |
1362 | * Arguments: | |
1363 | * pi -- the procinfo | |
1364 | * flag -- one of PR_FORK, PR_RLC, or PR_ASYNC | |
1365 | * mode -- 1 for set, 0 for reset. | |
1366 | * | |
1367 | * Returns non-zero for success, zero for failure. | |
1368 | */ | |
c906108c | 1369 | |
c3f6f71d | 1370 | enum { FLAG_RESET, FLAG_SET }; |
c906108c | 1371 | |
c3f6f71d | 1372 | static int |
fba45db2 | 1373 | proc_modify_flag (procinfo *pi, long flag, long mode) |
c3f6f71d JM |
1374 | { |
1375 | long win = 0; /* default to fail */ | |
1376 | ||
1377 | /* | |
1378 | * These operations affect the process as a whole, and applying | |
1379 | * them to an individual LWP has the same meaning as applying them | |
1380 | * to the main process. Therefore, if we're ever called with a | |
1381 | * pointer to an LWP's procinfo, let's substitute the process's | |
1382 | * procinfo and avoid opening the LWP's file descriptor | |
1383 | * unnecessarily. | |
1384 | */ | |
1385 | ||
1386 | if (pi->pid != 0) | |
1387 | pi = find_procinfo_or_die (pi->pid, 0); | |
1388 | ||
1389 | #ifdef NEW_PROC_API /* Newest method: UnixWare and newer Solarii */ | |
1390 | /* First normalize the PCUNSET/PCRESET command opcode | |
1391 | (which for no obvious reason has a different definition | |
1392 | from one operating system to the next...) */ | |
1393 | #ifdef PCUNSET | |
1394 | #define GDBRESET PCUNSET | |
37de36c6 | 1395 | #else |
c3f6f71d JM |
1396 | #ifdef PCRESET |
1397 | #define GDBRESET PCRESET | |
37de36c6 | 1398 | #endif |
c906108c | 1399 | #endif |
c3f6f71d | 1400 | { |
37de36c6 | 1401 | procfs_ctl_t arg[2]; |
c906108c | 1402 | |
c3f6f71d JM |
1403 | if (mode == FLAG_SET) /* Set the flag (RLC, FORK, or ASYNC) */ |
1404 | arg[0] = PCSET; | |
1405 | else /* Reset the flag */ | |
1406 | arg[0] = GDBRESET; | |
c5aa993b | 1407 | |
c3f6f71d JM |
1408 | arg[1] = flag; |
1409 | win = (write (pi->ctl_fd, (void *) &arg, sizeof (arg)) == sizeof (arg)); | |
1410 | } | |
1411 | #else | |
1412 | #ifdef PIOCSET /* Irix/Sol5 method */ | |
1413 | if (mode == FLAG_SET) /* Set the flag (hopefully RLC, FORK, or ASYNC) */ | |
1414 | { | |
1415 | win = (ioctl (pi->ctl_fd, PIOCSET, &flag) >= 0); | |
1416 | } | |
1417 | else /* Reset the flag */ | |
1418 | { | |
1419 | win = (ioctl (pi->ctl_fd, PIOCRESET, &flag) >= 0); | |
1420 | } | |
c906108c | 1421 | |
c3f6f71d JM |
1422 | #else |
1423 | #ifdef PIOCSRLC /* Oldest method: OSF */ | |
1424 | switch (flag) { | |
1425 | case PR_RLC: | |
1426 | if (mode == FLAG_SET) /* Set run-on-last-close */ | |
1427 | { | |
1428 | win = (ioctl (pi->ctl_fd, PIOCSRLC, NULL) >= 0); | |
1429 | } | |
1430 | else /* Clear run-on-last-close */ | |
1431 | { | |
1432 | win = (ioctl (pi->ctl_fd, PIOCRRLC, NULL) >= 0); | |
1433 | } | |
1434 | break; | |
1435 | case PR_FORK: | |
1436 | if (mode == FLAG_SET) /* Set inherit-on-fork */ | |
1437 | { | |
1438 | win = (ioctl (pi->ctl_fd, PIOCSFORK, NULL) >= 0); | |
1439 | } | |
1440 | else /* Clear inherit-on-fork */ | |
1441 | { | |
1442 | win = (ioctl (pi->ctl_fd, PIOCRFORK, NULL) >= 0); | |
1443 | } | |
1444 | break; | |
1445 | default: | |
1446 | win = 0; /* fail -- unknown flag (can't do PR_ASYNC) */ | |
1447 | break; | |
1448 | } | |
1449 | #endif | |
1450 | #endif | |
1451 | #endif | |
1452 | #undef GDBRESET | |
1453 | /* The above operation renders the procinfo's cached pstatus obsolete. */ | |
1454 | pi->status_valid = 0; | |
c906108c | 1455 | |
c3f6f71d JM |
1456 | if (!win) |
1457 | warning ("procfs: modify_flag failed to turn %s %s", | |
1458 | flag == PR_FORK ? "PR_FORK" : | |
1459 | flag == PR_RLC ? "PR_RLC" : | |
1460 | #ifdef PR_ASYNC | |
1461 | flag == PR_ASYNC ? "PR_ASYNC" : | |
0d06e24b JM |
1462 | #endif |
1463 | #ifdef PR_KLC | |
1464 | flag == PR_KLC ? "PR_KLC" : | |
c3f6f71d JM |
1465 | #endif |
1466 | "<unknown flag>", | |
1467 | mode == FLAG_RESET ? "off" : "on"); | |
c906108c | 1468 | |
c3f6f71d JM |
1469 | return win; |
1470 | } | |
c906108c | 1471 | |
c3f6f71d JM |
1472 | /* |
1473 | * Function: proc_set_run_on_last_close | |
1474 | * | |
1475 | * Set the run_on_last_close flag. | |
1476 | * Process with all threads will become runnable | |
1477 | * when debugger closes all /proc fds. | |
1478 | * | |
1479 | * Returns non-zero for success, zero for failure. | |
c906108c SS |
1480 | */ |
1481 | ||
c3f6f71d | 1482 | int |
fba45db2 | 1483 | proc_set_run_on_last_close (procinfo *pi) |
c906108c | 1484 | { |
c3f6f71d JM |
1485 | return proc_modify_flag (pi, PR_RLC, FLAG_SET); |
1486 | } | |
c906108c | 1487 | |
c3f6f71d JM |
1488 | /* |
1489 | * Function: proc_unset_run_on_last_close | |
1490 | * | |
1491 | * Reset the run_on_last_close flag. | |
1492 | * Process will NOT become runnable | |
1493 | * when debugger closes its file handles. | |
1494 | * | |
1495 | * Returns non-zero for success, zero for failure. | |
1496 | */ | |
c906108c | 1497 | |
c3f6f71d | 1498 | int |
fba45db2 | 1499 | proc_unset_run_on_last_close (procinfo *pi) |
c3f6f71d JM |
1500 | { |
1501 | return proc_modify_flag (pi, PR_RLC, FLAG_RESET); | |
c906108c SS |
1502 | } |
1503 | ||
0d06e24b JM |
1504 | #ifdef PR_KLC |
1505 | /* | |
1506 | * Function: proc_set_kill_on_last_close | |
1507 | * | |
1508 | * Set the kill_on_last_close flag. | |
1509 | * Process with all threads will be killed when debugger | |
1510 | * closes all /proc fds (or debugger exits or dies). | |
1511 | * | |
1512 | * Returns non-zero for success, zero for failure. | |
1513 | */ | |
1514 | ||
1515 | int | |
fba45db2 | 1516 | proc_set_kill_on_last_close (procinfo *pi) |
0d06e24b JM |
1517 | { |
1518 | return proc_modify_flag (pi, PR_KLC, FLAG_SET); | |
1519 | } | |
1520 | ||
1521 | /* | |
1522 | * Function: proc_unset_kill_on_last_close | |
1523 | * | |
1524 | * Reset the kill_on_last_close flag. | |
1525 | * Process will NOT be killed when debugger | |
1526 | * closes its file handles (or exits or dies). | |
1527 | * | |
1528 | * Returns non-zero for success, zero for failure. | |
1529 | */ | |
1530 | ||
1531 | int | |
fba45db2 | 1532 | proc_unset_kill_on_last_close (procinfo *pi) |
0d06e24b JM |
1533 | { |
1534 | return proc_modify_flag (pi, PR_KLC, FLAG_RESET); | |
1535 | } | |
1536 | #endif /* PR_KLC */ | |
1537 | ||
c906108c | 1538 | /* |
c3f6f71d JM |
1539 | * Function: proc_set_inherit_on_fork |
1540 | * | |
1541 | * Set inherit_on_fork flag. | |
1542 | * If the process forks a child while we are registered for events | |
1543 | * in the parent, then we will also recieve events from the child. | |
1544 | * | |
1545 | * Returns non-zero for success, zero for failure. | |
1546 | */ | |
c906108c | 1547 | |
c3f6f71d | 1548 | int |
fba45db2 | 1549 | proc_set_inherit_on_fork (procinfo *pi) |
c3f6f71d JM |
1550 | { |
1551 | return proc_modify_flag (pi, PR_FORK, FLAG_SET); | |
1552 | } | |
c5aa993b | 1553 | |
c3f6f71d JM |
1554 | /* |
1555 | * Function: proc_unset_inherit_on_fork | |
1556 | * | |
1557 | * Reset inherit_on_fork flag. | |
1558 | * If the process forks a child while we are registered for events | |
1559 | * in the parent, then we will NOT recieve events from the child. | |
1560 | * | |
1561 | * Returns non-zero for success, zero for failure. | |
1562 | */ | |
c906108c | 1563 | |
c3f6f71d | 1564 | int |
fba45db2 | 1565 | proc_unset_inherit_on_fork (procinfo *pi) |
c3f6f71d JM |
1566 | { |
1567 | return proc_modify_flag (pi, PR_FORK, FLAG_RESET); | |
1568 | } | |
c906108c | 1569 | |
c3f6f71d JM |
1570 | #ifdef PR_ASYNC |
1571 | /* | |
1572 | * Function: proc_set_async | |
1573 | * | |
1574 | * Set PR_ASYNC flag. | |
1575 | * If one LWP stops because of a debug event (signal etc.), | |
1576 | * the remaining LWPs will continue to run. | |
1577 | * | |
1578 | * Returns non-zero for success, zero for failure. | |
1579 | */ | |
c906108c | 1580 | |
c3f6f71d | 1581 | int |
fba45db2 | 1582 | proc_set_async (procinfo *pi) |
c3f6f71d JM |
1583 | { |
1584 | return proc_modify_flag (pi, PR_ASYNC, FLAG_SET); | |
1585 | } | |
c906108c | 1586 | |
c3f6f71d JM |
1587 | /* |
1588 | * Function: proc_unset_async | |
1589 | * | |
1590 | * Reset PR_ASYNC flag. | |
1591 | * If one LWP stops because of a debug event (signal etc.), | |
1592 | * then all other LWPs will stop as well. | |
1593 | * | |
1594 | * Returns non-zero for success, zero for failure. | |
c906108c SS |
1595 | */ |
1596 | ||
c3f6f71d | 1597 | int |
fba45db2 | 1598 | proc_unset_async (procinfo *pi) |
c3f6f71d JM |
1599 | { |
1600 | return proc_modify_flag (pi, PR_ASYNC, FLAG_RESET); | |
1601 | } | |
1602 | #endif /* PR_ASYNC */ | |
c906108c SS |
1603 | |
1604 | /* | |
c3f6f71d JM |
1605 | * Function: proc_stop_process |
1606 | * | |
1607 | * Request the process/LWP to stop. Does not wait. | |
1608 | * Returns non-zero for success, zero for failure. | |
1609 | */ | |
c906108c | 1610 | |
c3f6f71d | 1611 | int |
fba45db2 | 1612 | proc_stop_process (procinfo *pi) |
c3f6f71d JM |
1613 | { |
1614 | int win; | |
c906108c | 1615 | |
c3f6f71d JM |
1616 | /* |
1617 | * We might conceivably apply this operation to an LWP, and | |
1618 | * the LWP's ctl file descriptor might not be open. | |
1619 | */ | |
c906108c | 1620 | |
c3f6f71d JM |
1621 | if (pi->ctl_fd == 0 && |
1622 | open_procinfo_files (pi, FD_CTL) == 0) | |
1623 | return 0; | |
1624 | else | |
1625 | { | |
1626 | #ifdef NEW_PROC_API | |
37de36c6 | 1627 | procfs_ctl_t cmd = PCSTOP; |
c3f6f71d JM |
1628 | win = (write (pi->ctl_fd, (char *) &cmd, sizeof (cmd)) == sizeof (cmd)); |
1629 | #else /* ioctl method */ | |
1630 | win = (ioctl (pi->ctl_fd, PIOCSTOP, &pi->prstatus) >= 0); | |
1631 | /* Note: the call also reads the prstatus. */ | |
1632 | if (win) | |
1633 | { | |
1634 | pi->status_valid = 1; | |
1635 | PROC_PRETTYFPRINT_STATUS (proc_flags (pi), | |
1636 | proc_why (pi), | |
1637 | proc_what (pi), | |
1638 | proc_get_current_thread (pi)); | |
1639 | } | |
1640 | #endif | |
1641 | } | |
c906108c | 1642 | |
c3f6f71d JM |
1643 | return win; |
1644 | } | |
c5aa993b | 1645 | |
c3f6f71d JM |
1646 | /* |
1647 | * Function: proc_wait_for_stop | |
1648 | * | |
1649 | * Wait for the process or LWP to stop (block until it does). | |
1650 | * Returns non-zero for success, zero for failure. | |
c906108c SS |
1651 | */ |
1652 | ||
c3f6f71d | 1653 | int |
fba45db2 | 1654 | proc_wait_for_stop (procinfo *pi) |
c906108c | 1655 | { |
c3f6f71d JM |
1656 | int win; |
1657 | ||
1658 | /* | |
1659 | * We should never have to apply this operation to any procinfo | |
1660 | * except the one for the main process. If that ever changes | |
1661 | * for any reason, then take out the following clause and | |
1662 | * replace it with one that makes sure the ctl_fd is open. | |
1663 | */ | |
1664 | ||
1665 | if (pi->tid != 0) | |
1666 | pi = find_procinfo_or_die (pi->pid, 0); | |
1667 | ||
1668 | #ifdef NEW_PROC_API | |
1669 | { | |
37de36c6 | 1670 | procfs_ctl_t cmd = PCWSTOP; |
c3f6f71d JM |
1671 | win = (write (pi->ctl_fd, (char *) &cmd, sizeof (cmd)) == sizeof (cmd)); |
1672 | /* We been runnin' and we stopped -- need to update status. */ | |
1673 | pi->status_valid = 0; | |
1674 | } | |
1675 | #else /* ioctl method */ | |
1676 | win = (ioctl (pi->ctl_fd, PIOCWSTOP, &pi->prstatus) >= 0); | |
1677 | /* Above call also refreshes the prstatus. */ | |
1678 | if (win) | |
1679 | { | |
1680 | pi->status_valid = 1; | |
1681 | PROC_PRETTYFPRINT_STATUS (proc_flags (pi), | |
1682 | proc_why (pi), | |
1683 | proc_what (pi), | |
1684 | proc_get_current_thread (pi)); | |
1685 | } | |
c906108c SS |
1686 | #endif |
1687 | ||
c3f6f71d | 1688 | return win; |
c906108c SS |
1689 | } |
1690 | ||
1691 | /* | |
c3f6f71d JM |
1692 | * Function: proc_run_process |
1693 | * | |
1694 | * Make the process or LWP runnable. | |
1695 | * Options (not all are implemented): | |
1696 | * - single-step | |
1697 | * - clear current fault | |
1698 | * - clear current signal | |
1699 | * - abort the current system call | |
1700 | * - stop as soon as finished with system call | |
1701 | * - (ioctl): set traced signal set | |
1702 | * - (ioctl): set held signal set | |
1703 | * - (ioctl): set traced fault set | |
1704 | * - (ioctl): set start pc (vaddr) | |
1705 | * Always clear the current fault. | |
1706 | * Clear the current signal if 'signo' is zero. | |
1707 | * | |
1708 | * Arguments: | |
1709 | * pi the process or LWP to operate on. | |
1710 | * step if true, set the process or LWP to trap after one instr. | |
1711 | * signo if zero, clear the current signal if any. | |
1712 | * if non-zero, set the current signal to this one. | |
1713 | * | |
1714 | * Returns non-zero for success, zero for failure. | |
1715 | */ | |
1716 | ||
1717 | int | |
fba45db2 | 1718 | proc_run_process (procinfo *pi, int step, int signo) |
c3f6f71d JM |
1719 | { |
1720 | int win; | |
1721 | int runflags; | |
1722 | ||
1723 | /* | |
1724 | * We will probably have to apply this operation to individual threads, | |
1725 | * so make sure the control file descriptor is open. | |
1726 | */ | |
1727 | ||
1728 | if (pi->ctl_fd == 0 && | |
1729 | open_procinfo_files (pi, FD_CTL) == 0) | |
1730 | { | |
1731 | return 0; | |
1732 | } | |
c906108c | 1733 | |
c3f6f71d JM |
1734 | runflags = PRCFAULT; /* always clear current fault */ |
1735 | if (step) | |
1736 | runflags |= PRSTEP; | |
1737 | if (signo == 0) | |
1738 | runflags |= PRCSIG; | |
1739 | else if (signo != -1) /* -1 means do nothing W.R.T. signals */ | |
1740 | proc_set_current_signal (pi, signo); | |
c5aa993b | 1741 | |
c3f6f71d JM |
1742 | #ifdef NEW_PROC_API |
1743 | { | |
37de36c6 | 1744 | procfs_ctl_t cmd[2]; |
c906108c | 1745 | |
c3f6f71d JM |
1746 | cmd[0] = PCRUN; |
1747 | cmd[1] = runflags; | |
1748 | win = (write (pi->ctl_fd, (char *) &cmd, sizeof (cmd)) == sizeof (cmd)); | |
1749 | } | |
1750 | #else /* ioctl method */ | |
1751 | { | |
1752 | prrun_t prrun; | |
c906108c | 1753 | |
c3f6f71d JM |
1754 | memset (&prrun, 0, sizeof (prrun)); |
1755 | prrun.pr_flags = runflags; | |
1756 | win = (ioctl (pi->ctl_fd, PIOCRUN, &prrun) >= 0); | |
1757 | } | |
1758 | #endif | |
c906108c | 1759 | |
c3f6f71d JM |
1760 | return win; |
1761 | } | |
c906108c | 1762 | |
c3f6f71d JM |
1763 | /* |
1764 | * Function: proc_set_traced_signals | |
1765 | * | |
1766 | * Register to trace signals in the process or LWP. | |
1767 | * Returns non-zero for success, zero for failure. | |
c906108c SS |
1768 | */ |
1769 | ||
c3f6f71d | 1770 | int |
37de36c6 | 1771 | proc_set_traced_signals (procinfo *pi, gdb_sigset_t *sigset) |
c906108c | 1772 | { |
c3f6f71d JM |
1773 | int win; |
1774 | ||
1775 | /* | |
1776 | * We should never have to apply this operation to any procinfo | |
1777 | * except the one for the main process. If that ever changes | |
1778 | * for any reason, then take out the following clause and | |
1779 | * replace it with one that makes sure the ctl_fd is open. | |
1780 | */ | |
1781 | ||
1782 | if (pi->tid != 0) | |
1783 | pi = find_procinfo_or_die (pi->pid, 0); | |
1784 | ||
1785 | #ifdef NEW_PROC_API | |
1786 | { | |
1787 | struct { | |
37de36c6 | 1788 | procfs_ctl_t cmd; |
c3f6f71d | 1789 | /* Use char array to avoid alignment issues. */ |
37de36c6 | 1790 | char sigset[sizeof (gdb_sigset_t)]; |
c3f6f71d | 1791 | } arg; |
c906108c | 1792 | |
c3f6f71d | 1793 | arg.cmd = PCSTRACE; |
37de36c6 | 1794 | memcpy (&arg.sigset, sigset, sizeof (gdb_sigset_t)); |
c906108c | 1795 | |
c3f6f71d JM |
1796 | win = (write (pi->ctl_fd, (char *) &arg, sizeof (arg)) == sizeof (arg)); |
1797 | } | |
1798 | #else /* ioctl method */ | |
1799 | win = (ioctl (pi->ctl_fd, PIOCSTRACE, sigset) >= 0); | |
1800 | #endif | |
1801 | /* The above operation renders the procinfo's cached pstatus obsolete. */ | |
1802 | pi->status_valid = 0; | |
c906108c | 1803 | |
c3f6f71d JM |
1804 | if (!win) |
1805 | warning ("procfs: set_traced_signals failed"); | |
1806 | return win; | |
c906108c SS |
1807 | } |
1808 | ||
1809 | /* | |
c3f6f71d JM |
1810 | * Function: proc_set_traced_faults |
1811 | * | |
1812 | * Register to trace hardware faults in the process or LWP. | |
1813 | * Returns non-zero for success, zero for failure. | |
1814 | */ | |
c906108c | 1815 | |
c3f6f71d | 1816 | int |
fba45db2 | 1817 | proc_set_traced_faults (procinfo *pi, fltset_t *fltset) |
c3f6f71d JM |
1818 | { |
1819 | int win; | |
1820 | ||
1821 | /* | |
1822 | * We should never have to apply this operation to any procinfo | |
1823 | * except the one for the main process. If that ever changes | |
1824 | * for any reason, then take out the following clause and | |
1825 | * replace it with one that makes sure the ctl_fd is open. | |
1826 | */ | |
1827 | ||
1828 | if (pi->tid != 0) | |
1829 | pi = find_procinfo_or_die (pi->pid, 0); | |
1830 | ||
1831 | #ifdef NEW_PROC_API | |
1832 | { | |
1833 | struct { | |
37de36c6 | 1834 | procfs_ctl_t cmd; |
c3f6f71d JM |
1835 | /* Use char array to avoid alignment issues. */ |
1836 | char fltset[sizeof (fltset_t)]; | |
1837 | } arg; | |
c906108c | 1838 | |
c3f6f71d JM |
1839 | arg.cmd = PCSFAULT; |
1840 | memcpy (&arg.fltset, fltset, sizeof (fltset_t)); | |
c906108c | 1841 | |
c3f6f71d JM |
1842 | win = (write (pi->ctl_fd, (char *) &arg, sizeof (arg)) == sizeof (arg)); |
1843 | } | |
1844 | #else /* ioctl method */ | |
1845 | win = (ioctl (pi->ctl_fd, PIOCSFAULT, fltset) >= 0); | |
1846 | #endif | |
1847 | /* The above operation renders the procinfo's cached pstatus obsolete. */ | |
1848 | pi->status_valid = 0; | |
c906108c | 1849 | |
c3f6f71d JM |
1850 | return win; |
1851 | } | |
c5aa993b | 1852 | |
c3f6f71d JM |
1853 | /* |
1854 | * Function: proc_set_traced_sysentry | |
1855 | * | |
1856 | * Register to trace entry to system calls in the process or LWP. | |
1857 | * Returns non-zero for success, zero for failure. | |
c906108c SS |
1858 | */ |
1859 | ||
c3f6f71d | 1860 | int |
fba45db2 | 1861 | proc_set_traced_sysentry (procinfo *pi, sysset_t *sysset) |
c906108c | 1862 | { |
c3f6f71d JM |
1863 | int win; |
1864 | ||
1865 | /* | |
1866 | * We should never have to apply this operation to any procinfo | |
1867 | * except the one for the main process. If that ever changes | |
1868 | * for any reason, then take out the following clause and | |
1869 | * replace it with one that makes sure the ctl_fd is open. | |
1870 | */ | |
1871 | ||
1872 | if (pi->tid != 0) | |
1873 | pi = find_procinfo_or_die (pi->pid, 0); | |
1874 | ||
1875 | #ifdef NEW_PROC_API | |
1876 | { | |
37de36c6 KB |
1877 | struct gdb_proc_ctl_pcsentry { |
1878 | procfs_ctl_t cmd; | |
c3f6f71d JM |
1879 | /* Use char array to avoid alignment issues. */ |
1880 | char sysset[sizeof (sysset_t)]; | |
37de36c6 KB |
1881 | } *argp; |
1882 | int argp_size = sizeof (struct gdb_proc_ctl_pcsentry) | |
1883 | - sizeof (sysset_t) | |
1884 | + sysset_t_size (pi); | |
c3f6f71d | 1885 | |
37de36c6 | 1886 | argp = xmalloc (argp_size); |
c3f6f71d | 1887 | |
37de36c6 KB |
1888 | argp->cmd = PCSENTRY; |
1889 | memcpy (&argp->sysset, sysset, sysset_t_size (pi)); | |
1890 | ||
1891 | win = (write (pi->ctl_fd, (char *) argp, argp_size) == argp_size); | |
1892 | xfree (argp); | |
c3f6f71d JM |
1893 | } |
1894 | #else /* ioctl method */ | |
1895 | win = (ioctl (pi->ctl_fd, PIOCSENTRY, sysset) >= 0); | |
1896 | #endif | |
1897 | /* The above operation renders the procinfo's cached pstatus obsolete. */ | |
1898 | pi->status_valid = 0; | |
1899 | ||
1900 | return win; | |
c906108c SS |
1901 | } |
1902 | ||
1903 | /* | |
c3f6f71d JM |
1904 | * Function: proc_set_traced_sysexit |
1905 | * | |
1906 | * Register to trace exit from system calls in the process or LWP. | |
1907 | * Returns non-zero for success, zero for failure. | |
1908 | */ | |
c906108c | 1909 | |
c3f6f71d | 1910 | int |
fba45db2 | 1911 | proc_set_traced_sysexit (procinfo *pi, sysset_t *sysset) |
c3f6f71d JM |
1912 | { |
1913 | int win; | |
1914 | ||
1915 | /* | |
1916 | * We should never have to apply this operation to any procinfo | |
1917 | * except the one for the main process. If that ever changes | |
1918 | * for any reason, then take out the following clause and | |
1919 | * replace it with one that makes sure the ctl_fd is open. | |
1920 | */ | |
1921 | ||
1922 | if (pi->tid != 0) | |
1923 | pi = find_procinfo_or_die (pi->pid, 0); | |
1924 | ||
1925 | #ifdef NEW_PROC_API | |
1926 | { | |
37de36c6 KB |
1927 | struct gdb_proc_ctl_pcsexit { |
1928 | procfs_ctl_t cmd; | |
c3f6f71d JM |
1929 | /* Use char array to avoid alignment issues. */ |
1930 | char sysset[sizeof (sysset_t)]; | |
37de36c6 KB |
1931 | } *argp; |
1932 | int argp_size = sizeof (struct gdb_proc_ctl_pcsexit) | |
1933 | - sizeof (sysset_t) | |
1934 | + sysset_t_size (pi); | |
c906108c | 1935 | |
37de36c6 | 1936 | argp = xmalloc (argp_size); |
c906108c | 1937 | |
37de36c6 KB |
1938 | argp->cmd = PCSEXIT; |
1939 | memcpy (&argp->sysset, sysset, sysset_t_size (pi)); | |
1940 | ||
1941 | win = (write (pi->ctl_fd, (char *) argp, argp_size) == argp_size); | |
1942 | xfree (argp); | |
c3f6f71d JM |
1943 | } |
1944 | #else /* ioctl method */ | |
1945 | win = (ioctl (pi->ctl_fd, PIOCSEXIT, sysset) >= 0); | |
1946 | #endif | |
1947 | /* The above operation renders the procinfo's cached pstatus obsolete. */ | |
1948 | pi->status_valid = 0; | |
c906108c | 1949 | |
c3f6f71d JM |
1950 | return win; |
1951 | } | |
c906108c | 1952 | |
c3f6f71d JM |
1953 | /* |
1954 | * Function: proc_set_held_signals | |
1955 | * | |
1956 | * Specify the set of blocked / held signals in the process or LWP. | |
1957 | * Returns non-zero for success, zero for failure. | |
c906108c SS |
1958 | */ |
1959 | ||
c3f6f71d | 1960 | int |
37de36c6 | 1961 | proc_set_held_signals (procinfo *pi, gdb_sigset_t *sighold) |
c906108c | 1962 | { |
c3f6f71d JM |
1963 | int win; |
1964 | ||
1965 | /* | |
1966 | * We should never have to apply this operation to any procinfo | |
1967 | * except the one for the main process. If that ever changes | |
1968 | * for any reason, then take out the following clause and | |
1969 | * replace it with one that makes sure the ctl_fd is open. | |
1970 | */ | |
1971 | ||
1972 | if (pi->tid != 0) | |
1973 | pi = find_procinfo_or_die (pi->pid, 0); | |
1974 | ||
1975 | #ifdef NEW_PROC_API | |
1976 | { | |
1977 | struct { | |
37de36c6 | 1978 | procfs_ctl_t cmd; |
c3f6f71d | 1979 | /* Use char array to avoid alignment issues. */ |
37de36c6 | 1980 | char hold[sizeof (gdb_sigset_t)]; |
c3f6f71d JM |
1981 | } arg; |
1982 | ||
1983 | arg.cmd = PCSHOLD; | |
37de36c6 | 1984 | memcpy (&arg.hold, sighold, sizeof (gdb_sigset_t)); |
c3f6f71d JM |
1985 | win = (write (pi->ctl_fd, (void *) &arg, sizeof (arg)) == sizeof (arg)); |
1986 | } | |
c906108c | 1987 | #else |
c3f6f71d | 1988 | win = (ioctl (pi->ctl_fd, PIOCSHOLD, sighold) >= 0); |
c906108c | 1989 | #endif |
c3f6f71d JM |
1990 | /* The above operation renders the procinfo's cached pstatus obsolete. */ |
1991 | pi->status_valid = 0; | |
1992 | ||
1993 | return win; | |
c906108c SS |
1994 | } |
1995 | ||
1996 | /* | |
c3f6f71d JM |
1997 | * Function: proc_get_pending_signals |
1998 | * | |
1999 | * returns the set of signals that are pending in the process or LWP. | |
2000 | * Will also copy the sigset if 'save' is non-zero. | |
2001 | */ | |
c906108c | 2002 | |
37de36c6 KB |
2003 | gdb_sigset_t * |
2004 | proc_get_pending_signals (procinfo *pi, gdb_sigset_t *save) | |
c3f6f71d | 2005 | { |
37de36c6 | 2006 | gdb_sigset_t *ret = NULL; |
c3f6f71d JM |
2007 | |
2008 | /* | |
2009 | * We should never have to apply this operation to any procinfo | |
2010 | * except the one for the main process. If that ever changes | |
2011 | * for any reason, then take out the following clause and | |
2012 | * replace it with one that makes sure the ctl_fd is open. | |
2013 | */ | |
2014 | ||
2015 | if (pi->tid != 0) | |
2016 | pi = find_procinfo_or_die (pi->pid, 0); | |
2017 | ||
2018 | if (!pi->status_valid) | |
2019 | if (!proc_get_status (pi)) | |
2020 | return NULL; | |
2021 | ||
2022 | #ifdef NEW_PROC_API | |
2023 | ret = &pi->prstatus.pr_lwp.pr_lwppend; | |
2024 | #else | |
2025 | ret = &pi->prstatus.pr_sigpend; | |
2026 | #endif | |
2027 | if (save && ret) | |
37de36c6 | 2028 | memcpy (save, ret, sizeof (gdb_sigset_t)); |
c906108c | 2029 | |
c3f6f71d JM |
2030 | return ret; |
2031 | } | |
c906108c | 2032 | |
c3f6f71d JM |
2033 | /* |
2034 | * Function: proc_get_signal_actions | |
2035 | * | |
2036 | * returns the set of signal actions. | |
2037 | * Will also copy the sigactionset if 'save' is non-zero. | |
2038 | */ | |
c906108c | 2039 | |
37de36c6 KB |
2040 | gdb_sigaction_t * |
2041 | proc_get_signal_actions (procinfo *pi, gdb_sigaction_t *save) | |
c3f6f71d | 2042 | { |
37de36c6 | 2043 | gdb_sigaction_t *ret = NULL; |
c3f6f71d JM |
2044 | |
2045 | /* | |
2046 | * We should never have to apply this operation to any procinfo | |
2047 | * except the one for the main process. If that ever changes | |
2048 | * for any reason, then take out the following clause and | |
2049 | * replace it with one that makes sure the ctl_fd is open. | |
2050 | */ | |
2051 | ||
2052 | if (pi->tid != 0) | |
2053 | pi = find_procinfo_or_die (pi->pid, 0); | |
2054 | ||
2055 | if (!pi->status_valid) | |
2056 | if (!proc_get_status (pi)) | |
2057 | return NULL; | |
2058 | ||
2059 | #ifdef NEW_PROC_API | |
2060 | ret = &pi->prstatus.pr_lwp.pr_action; | |
2061 | #else | |
2062 | ret = &pi->prstatus.pr_action; | |
2063 | #endif | |
2064 | if (save && ret) | |
37de36c6 | 2065 | memcpy (save, ret, sizeof (gdb_sigaction_t)); |
c906108c | 2066 | |
c3f6f71d JM |
2067 | return ret; |
2068 | } | |
c5aa993b | 2069 | |
c3f6f71d JM |
2070 | /* |
2071 | * Function: proc_get_held_signals | |
2072 | * | |
2073 | * returns the set of signals that are held / blocked. | |
2074 | * Will also copy the sigset if 'save' is non-zero. | |
c906108c SS |
2075 | */ |
2076 | ||
37de36c6 KB |
2077 | gdb_sigset_t * |
2078 | proc_get_held_signals (procinfo *pi, gdb_sigset_t *save) | |
c906108c | 2079 | { |
37de36c6 | 2080 | gdb_sigset_t *ret = NULL; |
c3f6f71d JM |
2081 | |
2082 | /* | |
2083 | * We should never have to apply this operation to any procinfo | |
2084 | * except the one for the main process. If that ever changes | |
2085 | * for any reason, then take out the following clause and | |
2086 | * replace it with one that makes sure the ctl_fd is open. | |
2087 | */ | |
2088 | ||
2089 | if (pi->tid != 0) | |
2090 | pi = find_procinfo_or_die (pi->pid, 0); | |
2091 | ||
2092 | #ifdef NEW_PROC_API | |
2093 | if (!pi->status_valid) | |
2094 | if (!proc_get_status (pi)) | |
2095 | return NULL; | |
2096 | ||
2097 | #ifdef UNIXWARE | |
2098 | ret = &pi->prstatus.pr_lwp.pr_context.uc_sigmask; | |
c906108c | 2099 | #else |
c3f6f71d JM |
2100 | ret = &pi->prstatus.pr_lwp.pr_lwphold; |
2101 | #endif /* UNIXWARE */ | |
2102 | #else /* not NEW_PROC_API */ | |
2103 | { | |
37de36c6 | 2104 | static gdb_sigset_t sigheld; |
c3f6f71d JM |
2105 | |
2106 | if (ioctl (pi->ctl_fd, PIOCGHOLD, &sigheld) >= 0) | |
2107 | ret = &sigheld; | |
2108 | } | |
2109 | #endif /* NEW_PROC_API */ | |
2110 | if (save && ret) | |
37de36c6 | 2111 | memcpy (save, ret, sizeof (gdb_sigset_t)); |
c3f6f71d JM |
2112 | |
2113 | return ret; | |
c906108c SS |
2114 | } |
2115 | ||
c3f6f71d JM |
2116 | /* |
2117 | * Function: proc_get_traced_signals | |
2118 | * | |
2119 | * returns the set of signals that are traced / debugged. | |
2120 | * Will also copy the sigset if 'save' is non-zero. | |
2121 | */ | |
2122 | ||
37de36c6 KB |
2123 | gdb_sigset_t * |
2124 | proc_get_traced_signals (procinfo *pi, gdb_sigset_t *save) | |
c906108c | 2125 | { |
37de36c6 | 2126 | gdb_sigset_t *ret = NULL; |
c3f6f71d JM |
2127 | |
2128 | /* | |
2129 | * We should never have to apply this operation to any procinfo | |
2130 | * except the one for the main process. If that ever changes | |
2131 | * for any reason, then take out the following clause and | |
2132 | * replace it with one that makes sure the ctl_fd is open. | |
2133 | */ | |
2134 | ||
2135 | if (pi->tid != 0) | |
2136 | pi = find_procinfo_or_die (pi->pid, 0); | |
2137 | ||
2138 | #ifdef NEW_PROC_API | |
2139 | if (!pi->status_valid) | |
2140 | if (!proc_get_status (pi)) | |
2141 | return NULL; | |
2142 | ||
2143 | ret = &pi->prstatus.pr_sigtrace; | |
2144 | #else | |
2145 | { | |
37de36c6 | 2146 | static gdb_sigset_t sigtrace; |
c3f6f71d JM |
2147 | |
2148 | if (ioctl (pi->ctl_fd, PIOCGTRACE, &sigtrace) >= 0) | |
2149 | ret = &sigtrace; | |
2150 | } | |
c906108c | 2151 | #endif |
c3f6f71d | 2152 | if (save && ret) |
37de36c6 | 2153 | memcpy (save, ret, sizeof (gdb_sigset_t)); |
c906108c | 2154 | |
c3f6f71d JM |
2155 | return ret; |
2156 | } | |
c906108c | 2157 | |
c3f6f71d JM |
2158 | /* |
2159 | * Function: proc_trace_signal | |
2160 | * | |
2161 | * Add 'signo' to the set of signals that are traced. | |
2162 | * Returns non-zero for success, zero for failure. | |
2163 | */ | |
c906108c | 2164 | |
c3f6f71d | 2165 | int |
fba45db2 | 2166 | proc_trace_signal (procinfo *pi, int signo) |
c3f6f71d | 2167 | { |
37de36c6 | 2168 | gdb_sigset_t temp; |
c3f6f71d JM |
2169 | |
2170 | /* | |
2171 | * We should never have to apply this operation to any procinfo | |
2172 | * except the one for the main process. If that ever changes | |
2173 | * for any reason, then take out the following clause and | |
2174 | * replace it with one that makes sure the ctl_fd is open. | |
2175 | */ | |
2176 | ||
2177 | if (pi->tid != 0) | |
2178 | pi = find_procinfo_or_die (pi->pid, 0); | |
2179 | ||
2180 | if (pi) | |
c906108c | 2181 | { |
c3f6f71d | 2182 | if (proc_get_traced_signals (pi, &temp)) |
c906108c | 2183 | { |
c3f6f71d JM |
2184 | praddset (&temp, signo); |
2185 | return proc_set_traced_signals (pi, &temp); | |
c906108c SS |
2186 | } |
2187 | } | |
c5aa993b | 2188 | |
c3f6f71d JM |
2189 | return 0; /* failure */ |
2190 | } | |
c906108c | 2191 | |
c3f6f71d JM |
2192 | /* |
2193 | * Function: proc_ignore_signal | |
2194 | * | |
2195 | * Remove 'signo' from the set of signals that are traced. | |
2196 | * Returns non-zero for success, zero for failure. | |
2197 | */ | |
c906108c | 2198 | |
c3f6f71d | 2199 | int |
fba45db2 | 2200 | proc_ignore_signal (procinfo *pi, int signo) |
c3f6f71d | 2201 | { |
37de36c6 | 2202 | gdb_sigset_t temp; |
c3f6f71d JM |
2203 | |
2204 | /* | |
2205 | * We should never have to apply this operation to any procinfo | |
2206 | * except the one for the main process. If that ever changes | |
2207 | * for any reason, then take out the following clause and | |
2208 | * replace it with one that makes sure the ctl_fd is open. | |
2209 | */ | |
2210 | ||
2211 | if (pi->tid != 0) | |
2212 | pi = find_procinfo_or_die (pi->pid, 0); | |
2213 | ||
2214 | if (pi) | |
c906108c | 2215 | { |
c3f6f71d | 2216 | if (proc_get_traced_signals (pi, &temp)) |
c906108c | 2217 | { |
c3f6f71d JM |
2218 | prdelset (&temp, signo); |
2219 | return proc_set_traced_signals (pi, &temp); | |
c906108c | 2220 | } |
c906108c | 2221 | } |
c906108c | 2222 | |
c3f6f71d | 2223 | return 0; /* failure */ |
c906108c SS |
2224 | } |
2225 | ||
2226 | /* | |
c3f6f71d JM |
2227 | * Function: proc_get_traced_faults |
2228 | * | |
2229 | * returns the set of hardware faults that are traced /debugged. | |
2230 | * Will also copy the faultset if 'save' is non-zero. | |
2231 | */ | |
2232 | ||
2233 | fltset_t * | |
fba45db2 | 2234 | proc_get_traced_faults (procinfo *pi, fltset_t *save) |
c3f6f71d JM |
2235 | { |
2236 | fltset_t *ret = NULL; | |
2237 | ||
2238 | /* | |
2239 | * We should never have to apply this operation to any procinfo | |
2240 | * except the one for the main process. If that ever changes | |
2241 | * for any reason, then take out the following clause and | |
2242 | * replace it with one that makes sure the ctl_fd is open. | |
2243 | */ | |
2244 | ||
2245 | if (pi->tid != 0) | |
2246 | pi = find_procinfo_or_die (pi->pid, 0); | |
2247 | ||
2248 | #ifdef NEW_PROC_API | |
2249 | if (!pi->status_valid) | |
2250 | if (!proc_get_status (pi)) | |
2251 | return NULL; | |
2252 | ||
2253 | ret = &pi->prstatus.pr_flttrace; | |
2254 | #else | |
2255 | { | |
2256 | static fltset_t flttrace; | |
2257 | ||
2258 | if (ioctl (pi->ctl_fd, PIOCGFAULT, &flttrace) >= 0) | |
2259 | ret = &flttrace; | |
2260 | } | |
2261 | #endif | |
2262 | if (save && ret) | |
2263 | memcpy (save, ret, sizeof (fltset_t)); | |
c906108c | 2264 | |
c3f6f71d JM |
2265 | return ret; |
2266 | } | |
c906108c | 2267 | |
c3f6f71d JM |
2268 | /* |
2269 | * Function: proc_get_traced_sysentry | |
2270 | * | |
2271 | * returns the set of syscalls that are traced /debugged on entry. | |
2272 | * Will also copy the syscall set if 'save' is non-zero. | |
2273 | */ | |
c906108c | 2274 | |
c3f6f71d | 2275 | sysset_t * |
fba45db2 | 2276 | proc_get_traced_sysentry (procinfo *pi, sysset_t *save) |
c3f6f71d JM |
2277 | { |
2278 | sysset_t *ret = NULL; | |
2279 | ||
2280 | /* | |
2281 | * We should never have to apply this operation to any procinfo | |
2282 | * except the one for the main process. If that ever changes | |
2283 | * for any reason, then take out the following clause and | |
2284 | * replace it with one that makes sure the ctl_fd is open. | |
2285 | */ | |
2286 | ||
2287 | if (pi->tid != 0) | |
2288 | pi = find_procinfo_or_die (pi->pid, 0); | |
2289 | ||
2290 | #ifdef NEW_PROC_API | |
2291 | if (!pi->status_valid) | |
2292 | if (!proc_get_status (pi)) | |
2293 | return NULL; | |
2294 | ||
37de36c6 | 2295 | #ifndef DYNAMIC_SYSCALLS |
c3f6f71d | 2296 | ret = &pi->prstatus.pr_sysentry; |
37de36c6 KB |
2297 | #else /* DYNAMIC_SYSCALLS */ |
2298 | { | |
2299 | static sysset_t *sysentry; | |
2300 | size_t size; | |
2301 | ||
2302 | if (!sysentry) | |
2303 | sysentry = sysset_t_alloc (pi); | |
2304 | ret = sysentry; | |
2305 | if (pi->status_fd == 0 && open_procinfo_files (pi, FD_STATUS) == 0) | |
2306 | return NULL; | |
2307 | if (pi->prstatus.pr_sysentry_offset == 0) | |
2308 | { | |
2309 | gdb_premptysysset (sysentry); | |
2310 | } | |
2311 | else | |
2312 | { | |
2313 | int rsize; | |
2314 | ||
2315 | if (lseek (pi->status_fd, (off_t) pi->prstatus.pr_sysentry_offset, | |
2316 | SEEK_SET) | |
2317 | != (off_t) pi->prstatus.pr_sysentry_offset) | |
2318 | return NULL; | |
2319 | size = sysset_t_size (pi); | |
2320 | gdb_premptysysset (sysentry); | |
2321 | rsize = read (pi->status_fd, sysentry, size); | |
2322 | if (rsize < 0) | |
2323 | return NULL; | |
2324 | } | |
2325 | } | |
2326 | #endif /* DYNAMIC_SYSCALLS */ | |
2327 | #else /* !NEW_PROC_API */ | |
c3f6f71d JM |
2328 | { |
2329 | static sysset_t sysentry; | |
c906108c | 2330 | |
c3f6f71d JM |
2331 | if (ioctl (pi->ctl_fd, PIOCGENTRY, &sysentry) >= 0) |
2332 | ret = &sysentry; | |
2333 | } | |
37de36c6 | 2334 | #endif /* NEW_PROC_API */ |
c3f6f71d | 2335 | if (save && ret) |
37de36c6 | 2336 | memcpy (save, ret, sysset_t_size (pi)); |
c906108c | 2337 | |
c3f6f71d JM |
2338 | return ret; |
2339 | } | |
c5aa993b | 2340 | |
c3f6f71d JM |
2341 | /* |
2342 | * Function: proc_get_traced_sysexit | |
2343 | * | |
2344 | * returns the set of syscalls that are traced /debugged on exit. | |
2345 | * Will also copy the syscall set if 'save' is non-zero. | |
c906108c SS |
2346 | */ |
2347 | ||
c3f6f71d | 2348 | sysset_t * |
fba45db2 | 2349 | proc_get_traced_sysexit (procinfo *pi, sysset_t *save) |
c906108c | 2350 | { |
c3f6f71d JM |
2351 | sysset_t * ret = NULL; |
2352 | ||
2353 | /* | |
2354 | * We should never have to apply this operation to any procinfo | |
2355 | * except the one for the main process. If that ever changes | |
2356 | * for any reason, then take out the following clause and | |
2357 | * replace it with one that makes sure the ctl_fd is open. | |
2358 | */ | |
2359 | ||
2360 | if (pi->tid != 0) | |
2361 | pi = find_procinfo_or_die (pi->pid, 0); | |
2362 | ||
2363 | #ifdef NEW_PROC_API | |
2364 | if (!pi->status_valid) | |
2365 | if (!proc_get_status (pi)) | |
2366 | return NULL; | |
2367 | ||
37de36c6 | 2368 | #ifndef DYNAMIC_SYSCALLS |
c3f6f71d | 2369 | ret = &pi->prstatus.pr_sysexit; |
37de36c6 KB |
2370 | #else /* DYNAMIC_SYSCALLS */ |
2371 | { | |
2372 | static sysset_t *sysexit; | |
2373 | size_t size; | |
2374 | ||
2375 | if (!sysexit) | |
2376 | sysexit = sysset_t_alloc (pi); | |
2377 | ret = sysexit; | |
2378 | if (pi->status_fd == 0 && open_procinfo_files (pi, FD_STATUS) == 0) | |
2379 | return NULL; | |
2380 | if (pi->prstatus.pr_sysexit_offset == 0) | |
2381 | { | |
2382 | gdb_premptysysset (sysexit); | |
2383 | } | |
2384 | else | |
2385 | { | |
2386 | int rsize; | |
2387 | ||
2388 | if (lseek (pi->status_fd, (off_t) pi->prstatus.pr_sysexit_offset, SEEK_SET) | |
2389 | != (off_t) pi->prstatus.pr_sysexit_offset) | |
2390 | return NULL; | |
2391 | size = sysset_t_size (pi); | |
2392 | gdb_premptysysset (sysexit); | |
2393 | rsize = read (pi->status_fd, sysexit, size); | |
2394 | if (rsize < 0) | |
2395 | return NULL; | |
2396 | } | |
2397 | } | |
2398 | #endif /* DYNAMIC_SYSCALLS */ | |
c3f6f71d JM |
2399 | #else |
2400 | { | |
2401 | static sysset_t sysexit; | |
c5aa993b | 2402 | |
c3f6f71d JM |
2403 | if (ioctl (pi->ctl_fd, PIOCGEXIT, &sysexit) >= 0) |
2404 | ret = &sysexit; | |
2405 | } | |
2406 | #endif | |
2407 | if (save && ret) | |
37de36c6 | 2408 | memcpy (save, ret, sysset_t_size (pi)); |
c3f6f71d JM |
2409 | |
2410 | return ret; | |
2411 | } | |
c906108c | 2412 | |
c3f6f71d JM |
2413 | /* |
2414 | * Function: proc_clear_current_fault | |
2415 | * | |
2416 | * The current fault (if any) is cleared; the associated signal | |
2417 | * will not be sent to the process or LWP when it resumes. | |
2418 | * Returns non-zero for success, zero for failure. | |
2419 | */ | |
c906108c | 2420 | |
c3f6f71d | 2421 | int |
fba45db2 | 2422 | proc_clear_current_fault (procinfo *pi) |
c3f6f71d JM |
2423 | { |
2424 | int win; | |
2425 | ||
2426 | /* | |
2427 | * We should never have to apply this operation to any procinfo | |
2428 | * except the one for the main process. If that ever changes | |
2429 | * for any reason, then take out the following clause and | |
2430 | * replace it with one that makes sure the ctl_fd is open. | |
2431 | */ | |
2432 | ||
2433 | if (pi->tid != 0) | |
2434 | pi = find_procinfo_or_die (pi->pid, 0); | |
2435 | ||
2436 | #ifdef NEW_PROC_API | |
2437 | { | |
37de36c6 | 2438 | procfs_ctl_t cmd = PCCFAULT; |
c3f6f71d JM |
2439 | win = (write (pi->ctl_fd, (void *) &cmd, sizeof (cmd)) == sizeof (cmd)); |
2440 | } | |
2441 | #else | |
2442 | win = (ioctl (pi->ctl_fd, PIOCCFAULT, 0) >= 0); | |
2443 | #endif | |
2444 | ||
2445 | return win; | |
c906108c SS |
2446 | } |
2447 | ||
2448 | /* | |
c3f6f71d JM |
2449 | * Function: proc_set_current_signal |
2450 | * | |
2451 | * Set the "current signal" that will be delivered next to the process. | |
2452 | * NOTE: semantics are different from those of KILL. | |
2453 | * This signal will be delivered to the process or LWP | |
2454 | * immediately when it is resumed (even if the signal is held/blocked); | |
2455 | * it will NOT immediately cause another event of interest, and will NOT | |
2456 | * first trap back to the debugger. | |
2457 | * | |
2458 | * Returns non-zero for success, zero for failure. | |
2459 | */ | |
2460 | ||
2461 | int | |
fba45db2 | 2462 | proc_set_current_signal (procinfo *pi, int signo) |
c3f6f71d JM |
2463 | { |
2464 | int win; | |
2465 | struct { | |
37de36c6 | 2466 | procfs_ctl_t cmd; |
c3f6f71d | 2467 | /* Use char array to avoid alignment issues. */ |
37de36c6 | 2468 | char sinfo[sizeof (gdb_siginfo_t)]; |
c3f6f71d | 2469 | } arg; |
37de36c6 | 2470 | gdb_siginfo_t *mysinfo; |
c3f6f71d JM |
2471 | |
2472 | /* | |
2473 | * We should never have to apply this operation to any procinfo | |
2474 | * except the one for the main process. If that ever changes | |
2475 | * for any reason, then take out the following clause and | |
2476 | * replace it with one that makes sure the ctl_fd is open. | |
2477 | */ | |
2478 | ||
2479 | if (pi->tid != 0) | |
2480 | pi = find_procinfo_or_die (pi->pid, 0); | |
2481 | ||
2482 | #ifdef PROCFS_DONT_PIOCSSIG_CURSIG | |
2483 | /* With Alpha OSF/1 procfs, the kernel gets really confused if it | |
2484 | * receives a PIOCSSIG with a signal identical to the current signal, | |
2485 | * it messes up the current signal. Work around the kernel bug. | |
2486 | */ | |
2487 | if (signo > 0 && | |
2488 | signo == proc_cursig (pi)) | |
2489 | return 1; /* I assume this is a success? */ | |
2490 | #endif | |
2491 | ||
2492 | /* The pointer is just a type alias. */ | |
37de36c6 | 2493 | mysinfo = (gdb_siginfo_t *) &arg.sinfo; |
c3f6f71d JM |
2494 | mysinfo->si_signo = signo; |
2495 | mysinfo->si_code = 0; | |
2496 | mysinfo->si_pid = getpid (); /* ?why? */ | |
2497 | mysinfo->si_uid = getuid (); /* ?why? */ | |
2498 | ||
2499 | #ifdef NEW_PROC_API | |
2500 | arg.cmd = PCSSIG; | |
2501 | win = (write (pi->ctl_fd, (void *) &arg, sizeof (arg)) == sizeof (arg)); | |
2502 | #else | |
2503 | win = (ioctl (pi->ctl_fd, PIOCSSIG, (void *) &arg.sinfo) >= 0); | |
2504 | #endif | |
c906108c | 2505 | |
c3f6f71d JM |
2506 | return win; |
2507 | } | |
c906108c | 2508 | |
c3f6f71d JM |
2509 | /* |
2510 | * Function: proc_clear_current_signal | |
2511 | * | |
2512 | * The current signal (if any) is cleared, and | |
2513 | * is not sent to the process or LWP when it resumes. | |
2514 | * Returns non-zero for success, zero for failure. | |
2515 | */ | |
c906108c | 2516 | |
c3f6f71d | 2517 | int |
fba45db2 | 2518 | proc_clear_current_signal (procinfo *pi) |
c3f6f71d JM |
2519 | { |
2520 | int win; | |
2521 | ||
2522 | /* | |
2523 | * We should never have to apply this operation to any procinfo | |
2524 | * except the one for the main process. If that ever changes | |
2525 | * for any reason, then take out the following clause and | |
2526 | * replace it with one that makes sure the ctl_fd is open. | |
2527 | */ | |
2528 | ||
2529 | if (pi->tid != 0) | |
2530 | pi = find_procinfo_or_die (pi->pid, 0); | |
2531 | ||
2532 | #ifdef NEW_PROC_API | |
2533 | { | |
2534 | struct { | |
37de36c6 | 2535 | procfs_ctl_t cmd; |
c3f6f71d | 2536 | /* Use char array to avoid alignment issues. */ |
37de36c6 | 2537 | char sinfo[sizeof (gdb_siginfo_t)]; |
c3f6f71d | 2538 | } arg; |
37de36c6 | 2539 | gdb_siginfo_t *mysinfo; |
c3f6f71d JM |
2540 | |
2541 | arg.cmd = PCSSIG; | |
2542 | /* The pointer is just a type alias. */ | |
37de36c6 | 2543 | mysinfo = (gdb_siginfo_t *) &arg.sinfo; |
c3f6f71d JM |
2544 | mysinfo->si_signo = 0; |
2545 | mysinfo->si_code = 0; | |
2546 | mysinfo->si_errno = 0; | |
2547 | mysinfo->si_pid = getpid (); /* ?why? */ | |
2548 | mysinfo->si_uid = getuid (); /* ?why? */ | |
2549 | ||
2550 | win = (write (pi->ctl_fd, (void *) &arg, sizeof (arg)) == sizeof (arg)); | |
2551 | } | |
2552 | #else | |
2553 | win = (ioctl (pi->ctl_fd, PIOCSSIG, 0) >= 0); | |
2554 | #endif | |
c906108c | 2555 | |
c3f6f71d JM |
2556 | return win; |
2557 | } | |
c906108c | 2558 | |
c3f6f71d JM |
2559 | /* |
2560 | * Function: proc_get_gregs | |
2561 | * | |
2562 | * Get the general registers for the process or LWP. | |
2563 | * Returns non-zero for success, zero for failure. | |
2564 | */ | |
c906108c | 2565 | |
c3f6f71d | 2566 | gdb_gregset_t * |
fba45db2 | 2567 | proc_get_gregs (procinfo *pi) |
c3f6f71d JM |
2568 | { |
2569 | if (!pi->status_valid || !pi->gregs_valid) | |
2570 | if (!proc_get_status (pi)) | |
2571 | return NULL; | |
2572 | ||
2573 | /* | |
2574 | * OK, sorry about the ifdef's. | |
2575 | * There's three cases instead of two, because | |
2576 | * in this instance Unixware and Solaris/RW differ. | |
2577 | */ | |
2578 | ||
2579 | #ifdef NEW_PROC_API | |
2580 | #ifdef UNIXWARE /* ugh, a true architecture dependency */ | |
2581 | return &pi->prstatus.pr_lwp.pr_context.uc_mcontext.gregs; | |
2582 | #else /* not Unixware */ | |
2583 | return &pi->prstatus.pr_lwp.pr_reg; | |
2584 | #endif /* Unixware */ | |
2585 | #else /* not NEW_PROC_API */ | |
2586 | return &pi->prstatus.pr_reg; | |
2587 | #endif /* NEW_PROC_API */ | |
2588 | } | |
c5aa993b | 2589 | |
c3f6f71d JM |
2590 | /* |
2591 | * Function: proc_get_fpregs | |
2592 | * | |
2593 | * Get the floating point registers for the process or LWP. | |
2594 | * Returns non-zero for success, zero for failure. | |
c906108c SS |
2595 | */ |
2596 | ||
c3f6f71d | 2597 | gdb_fpregset_t * |
fba45db2 | 2598 | proc_get_fpregs (procinfo *pi) |
c906108c | 2599 | { |
c3f6f71d JM |
2600 | #ifdef NEW_PROC_API |
2601 | if (!pi->status_valid || !pi->fpregs_valid) | |
2602 | if (!proc_get_status (pi)) | |
2603 | return NULL; | |
2604 | ||
2605 | #ifdef UNIXWARE /* a true architecture dependency */ | |
2606 | return &pi->prstatus.pr_lwp.pr_context.uc_mcontext.fpregs; | |
2607 | #else | |
2608 | return &pi->prstatus.pr_lwp.pr_fpreg; | |
2609 | #endif /* Unixware */ | |
c5aa993b | 2610 | |
c3f6f71d JM |
2611 | #else /* not NEW_PROC_API */ |
2612 | if (pi->fpregs_valid) | |
2613 | return &pi->fpregset; /* already got 'em */ | |
2614 | else | |
c906108c | 2615 | { |
c3f6f71d JM |
2616 | if (pi->ctl_fd == 0 && |
2617 | open_procinfo_files (pi, FD_CTL) == 0) | |
c906108c | 2618 | { |
c3f6f71d | 2619 | return NULL; |
c906108c | 2620 | } |
c3f6f71d | 2621 | else |
c906108c | 2622 | { |
c3f6f71d JM |
2623 | #ifdef PIOCTGFPREG |
2624 | struct { | |
2625 | long pr_count; | |
2626 | tid_t pr_error_thread; | |
2627 | tfpregset_t thread_1; | |
2628 | } thread_fpregs; | |
2629 | ||
2630 | thread_fpregs.pr_count = 1; | |
2631 | thread_fpregs.thread_1.tid = pi->tid; | |
2632 | ||
2633 | if (pi->tid == 0 && | |
2634 | ioctl (pi->ctl_fd, PIOCGFPREG, &pi->fpregset) >= 0) | |
2635 | { | |
2636 | pi->fpregs_valid = 1; | |
2637 | return &pi->fpregset; /* got 'em now! */ | |
2638 | } | |
2639 | else if (pi->tid != 0 && | |
2640 | ioctl (pi->ctl_fd, PIOCTGFPREG, &thread_fpregs) >= 0) | |
2641 | { | |
2642 | memcpy (&pi->fpregset, &thread_fpregs.thread_1.pr_fpregs, | |
2643 | sizeof (pi->fpregset)); | |
2644 | pi->fpregs_valid = 1; | |
2645 | return &pi->fpregset; /* got 'em now! */ | |
2646 | } | |
2647 | else | |
2648 | { | |
2649 | return NULL; | |
2650 | } | |
2651 | #else | |
2652 | if (ioctl (pi->ctl_fd, PIOCGFPREG, &pi->fpregset) >= 0) | |
2653 | { | |
2654 | pi->fpregs_valid = 1; | |
2655 | return &pi->fpregset; /* got 'em now! */ | |
2656 | } | |
2657 | else | |
2658 | { | |
2659 | return NULL; | |
2660 | } | |
2661 | #endif | |
c906108c | 2662 | } |
c906108c | 2663 | } |
c3f6f71d | 2664 | #endif |
c906108c SS |
2665 | } |
2666 | ||
c3f6f71d JM |
2667 | /* |
2668 | * Function: proc_set_gregs | |
2669 | * | |
2670 | * Write the general registers back to the process or LWP. | |
2671 | * Returns non-zero for success, zero for failure. | |
2672 | */ | |
2673 | ||
2674 | int | |
fba45db2 | 2675 | proc_set_gregs (procinfo *pi) |
c906108c | 2676 | { |
c3f6f71d JM |
2677 | gdb_gregset_t *gregs; |
2678 | int win; | |
c5aa993b | 2679 | |
c3f6f71d JM |
2680 | if ((gregs = proc_get_gregs (pi)) == NULL) |
2681 | return 0; /* get_regs has already warned */ | |
2682 | ||
2683 | if (pi->ctl_fd == 0 && | |
2684 | open_procinfo_files (pi, FD_CTL) == 0) | |
c906108c | 2685 | { |
c3f6f71d | 2686 | return 0; |
c906108c | 2687 | } |
c3f6f71d | 2688 | else |
c906108c | 2689 | { |
c3f6f71d JM |
2690 | #ifdef NEW_PROC_API |
2691 | struct { | |
37de36c6 | 2692 | procfs_ctl_t cmd; |
c3f6f71d JM |
2693 | /* Use char array to avoid alignment issues. */ |
2694 | char gregs[sizeof (gdb_gregset_t)]; | |
2695 | } arg; | |
2696 | ||
2697 | arg.cmd = PCSREG; | |
2698 | memcpy (&arg.gregs, gregs, sizeof (arg.gregs)); | |
2699 | win = (write (pi->ctl_fd, (void *) &arg, sizeof (arg)) == sizeof (arg)); | |
2700 | #else | |
2701 | win = (ioctl (pi->ctl_fd, PIOCSREG, gregs) >= 0); | |
2702 | #endif | |
c906108c | 2703 | } |
c3f6f71d JM |
2704 | |
2705 | /* Policy: writing the regs invalidates our cache. */ | |
2706 | pi->gregs_valid = 0; | |
2707 | return win; | |
c906108c SS |
2708 | } |
2709 | ||
c3f6f71d JM |
2710 | /* |
2711 | * Function: proc_set_fpregs | |
2712 | * | |
2713 | * Modify the floating point register set of the process or LWP. | |
2714 | * Returns non-zero for success, zero for failure. | |
2715 | */ | |
2716 | ||
2717 | int | |
fba45db2 | 2718 | proc_set_fpregs (procinfo *pi) |
c906108c | 2719 | { |
c3f6f71d JM |
2720 | gdb_fpregset_t *fpregs; |
2721 | int win; | |
2722 | ||
2723 | if ((fpregs = proc_get_fpregs (pi)) == NULL) | |
2724 | return 0; /* get_fpregs has already warned */ | |
c5aa993b | 2725 | |
c3f6f71d JM |
2726 | if (pi->ctl_fd == 0 && |
2727 | open_procinfo_files (pi, FD_CTL) == 0) | |
c906108c | 2728 | { |
c3f6f71d | 2729 | return 0; |
c906108c | 2730 | } |
c3f6f71d | 2731 | else |
c906108c | 2732 | { |
c3f6f71d JM |
2733 | #ifdef NEW_PROC_API |
2734 | struct { | |
37de36c6 | 2735 | procfs_ctl_t cmd; |
c3f6f71d JM |
2736 | /* Use char array to avoid alignment issues. */ |
2737 | char fpregs[sizeof (gdb_fpregset_t)]; | |
2738 | } arg; | |
2739 | ||
2740 | arg.cmd = PCSFPREG; | |
2741 | memcpy (&arg.fpregs, fpregs, sizeof (arg.fpregs)); | |
2742 | win = (write (pi->ctl_fd, (void *) &arg, sizeof (arg)) == sizeof (arg)); | |
2743 | #else | |
2744 | #ifdef PIOCTSFPREG | |
2745 | if (pi->tid == 0) | |
2746 | win = (ioctl (pi->ctl_fd, PIOCSFPREG, fpregs) >= 0); | |
2747 | else | |
2748 | { | |
2749 | struct { | |
2750 | long pr_count; | |
2751 | tid_t pr_error_thread; | |
2752 | tfpregset_t thread_1; | |
2753 | } thread_fpregs; | |
2754 | ||
2755 | thread_fpregs.pr_count = 1; | |
2756 | thread_fpregs.thread_1.tid = pi->tid; | |
2757 | memcpy (&thread_fpregs.thread_1.pr_fpregs, fpregs, | |
2758 | sizeof (*fpregs)); | |
2759 | win = (ioctl (pi->ctl_fd, PIOCTSFPREG, &thread_fpregs) >= 0); | |
2760 | } | |
2761 | #else | |
2762 | win = (ioctl (pi->ctl_fd, PIOCSFPREG, fpregs) >= 0); | |
2763 | #endif /* osf PIOCTSFPREG */ | |
2764 | #endif /* NEW_PROC_API */ | |
c906108c | 2765 | } |
c3f6f71d JM |
2766 | |
2767 | /* Policy: writing the regs invalidates our cache. */ | |
2768 | pi->fpregs_valid = 0; | |
2769 | return win; | |
c906108c SS |
2770 | } |
2771 | ||
2772 | /* | |
c3f6f71d JM |
2773 | * Function: proc_kill |
2774 | * | |
2775 | * Send a signal to the proc or lwp with the semantics of "kill()". | |
2776 | * Returns non-zero for success, zero for failure. | |
2777 | */ | |
c906108c | 2778 | |
c3f6f71d | 2779 | int |
fba45db2 | 2780 | proc_kill (procinfo *pi, int signo) |
c3f6f71d JM |
2781 | { |
2782 | int win; | |
c906108c | 2783 | |
c3f6f71d JM |
2784 | /* |
2785 | * We might conceivably apply this operation to an LWP, and | |
2786 | * the LWP's ctl file descriptor might not be open. | |
2787 | */ | |
c906108c | 2788 | |
c3f6f71d JM |
2789 | if (pi->ctl_fd == 0 && |
2790 | open_procinfo_files (pi, FD_CTL) == 0) | |
2791 | { | |
2792 | return 0; | |
2793 | } | |
2794 | else | |
2795 | { | |
2796 | #ifdef NEW_PROC_API | |
37de36c6 | 2797 | procfs_ctl_t cmd[2]; |
c906108c | 2798 | |
c3f6f71d JM |
2799 | cmd[0] = PCKILL; |
2800 | cmd[1] = signo; | |
2801 | win = (write (pi->ctl_fd, (char *) &cmd, sizeof (cmd)) == sizeof (cmd)); | |
2802 | #else /* ioctl method */ | |
2803 | /* FIXME: do I need the Alpha OSF fixups present in | |
2804 | procfs.c/unconditionally_kill_inferior? Perhaps only for SIGKILL? */ | |
2805 | win = (ioctl (pi->ctl_fd, PIOCKILL, &signo) >= 0); | |
2806 | #endif | |
2807 | } | |
c906108c | 2808 | |
c3f6f71d JM |
2809 | return win; |
2810 | } | |
c906108c | 2811 | |
c3f6f71d JM |
2812 | /* |
2813 | * Function: proc_parent_pid | |
2814 | * | |
2815 | * Find the pid of the process that started this one. | |
2816 | * Returns the parent process pid, or zero. | |
c906108c SS |
2817 | */ |
2818 | ||
c3f6f71d | 2819 | int |
fba45db2 | 2820 | proc_parent_pid (procinfo *pi) |
c906108c | 2821 | { |
c3f6f71d JM |
2822 | /* |
2823 | * We should never have to apply this operation to any procinfo | |
2824 | * except the one for the main process. If that ever changes | |
2825 | * for any reason, then take out the following clause and | |
2826 | * replace it with one that makes sure the ctl_fd is open. | |
2827 | */ | |
2828 | ||
2829 | if (pi->tid != 0) | |
2830 | pi = find_procinfo_or_die (pi->pid, 0); | |
2831 | ||
2832 | if (!pi->status_valid) | |
2833 | if (!proc_get_status (pi)) | |
2834 | return 0; | |
c5aa993b | 2835 | |
c3f6f71d JM |
2836 | return pi->prstatus.pr_ppid; |
2837 | } | |
2838 | ||
2839 | ||
2840 | /* | |
2841 | * Function: proc_set_watchpoint | |
2842 | * | |
2843 | */ | |
2844 | ||
2845 | int | |
fba45db2 | 2846 | proc_set_watchpoint (procinfo *pi, CORE_ADDR addr, int len, int wflags) |
c3f6f71d JM |
2847 | { |
2848 | #if !defined (TARGET_HAS_HARDWARE_WATCHPOINTS) | |
2849 | return 0; | |
2850 | #else | |
2851 | /* Horrible hack! Detect Solaris 2.5, because this doesn't work on 2.5 */ | |
2852 | #if defined (PIOCOPENLWP) || defined (UNIXWARE) /* Solaris 2.5: bail out */ | |
2853 | return 0; | |
2854 | #else | |
2855 | struct { | |
37de36c6 | 2856 | procfs_ctl_t cmd; |
c3f6f71d JM |
2857 | char watch[sizeof (prwatch_t)]; |
2858 | } arg; | |
2859 | prwatch_t *pwatch; | |
2860 | ||
2861 | pwatch = (prwatch_t *) &arg.watch; | |
831e682e MS |
2862 | #ifdef PCAGENT /* Horrible hack: only defined on Solaris 2.6+ */ |
2863 | pwatch->pr_vaddr = (uintptr_t) address_to_host_pointer (addr); | |
2864 | #else | |
2865 | pwatch->pr_vaddr = (caddr_t) address_to_host_pointer (addr); | |
2866 | #endif | |
c3f6f71d JM |
2867 | pwatch->pr_size = len; |
2868 | pwatch->pr_wflags = wflags; | |
2869 | #if defined(NEW_PROC_API) && defined (PCWATCH) | |
2870 | arg.cmd = PCWATCH; | |
2871 | return (write (pi->ctl_fd, &arg, sizeof (arg)) == sizeof (arg)); | |
2872 | #else | |
2873 | #if defined (PIOCSWATCH) | |
2874 | return (ioctl (pi->ctl_fd, PIOCSWATCH, pwatch) >= 0); | |
2875 | #else | |
2876 | return 0; /* Fail */ | |
2877 | #endif | |
2878 | #endif | |
2879 | #endif | |
2880 | #endif | |
c906108c SS |
2881 | } |
2882 | ||
c3f6f71d | 2883 | #ifdef TM_I386SOL2_H /* Is it hokey to use this? */ |
c906108c | 2884 | |
c3f6f71d | 2885 | #include <sys/sysi86.h> |
c906108c | 2886 | |
c3f6f71d JM |
2887 | /* |
2888 | * Function: proc_get_LDT_entry | |
2889 | * | |
2890 | * Inputs: | |
2891 | * procinfo *pi; | |
2892 | * int key; | |
2893 | * | |
2894 | * The 'key' is actually the value of the lower 16 bits of | |
2895 | * the GS register for the LWP that we're interested in. | |
2896 | * | |
2897 | * Return: matching ssh struct (LDT entry). | |
c906108c SS |
2898 | */ |
2899 | ||
c3f6f71d | 2900 | struct ssd * |
fba45db2 | 2901 | proc_get_LDT_entry (procinfo *pi, int key) |
c906108c | 2902 | { |
c3f6f71d JM |
2903 | static struct ssd *ldt_entry = NULL; |
2904 | #ifdef NEW_PROC_API | |
2905 | char pathname[MAX_PROC_NAME_SIZE]; | |
2906 | struct cleanup *old_chain = NULL; | |
2907 | int fd; | |
2908 | ||
2909 | /* Allocate space for one LDT entry. | |
2910 | This alloc must persist, because we return a pointer to it. */ | |
2911 | if (ldt_entry == NULL) | |
2912 | ldt_entry = (struct ssd *) xmalloc (sizeof (struct ssd)); | |
2913 | ||
2914 | /* Open the file descriptor for the LDT table. */ | |
2915 | sprintf (pathname, "/proc/%d/ldt", pi->pid); | |
4d1bcd09 | 2916 | if ((fd = open_with_retry (pathname, O_RDONLY)) < 0) |
c906108c | 2917 | { |
c3f6f71d JM |
2918 | proc_warn (pi, "proc_get_LDT_entry (open)", __LINE__); |
2919 | return NULL; | |
c906108c | 2920 | } |
c3f6f71d | 2921 | /* Make sure it gets closed again! */ |
004527cb | 2922 | old_chain = make_cleanup_close (fd); |
c906108c | 2923 | |
c3f6f71d JM |
2924 | /* Now 'read' thru the table, find a match and return it. */ |
2925 | while (read (fd, ldt_entry, sizeof (struct ssd)) == sizeof (struct ssd)) | |
c906108c | 2926 | { |
c3f6f71d JM |
2927 | if (ldt_entry->sel == 0 && |
2928 | ldt_entry->bo == 0 && | |
2929 | ldt_entry->acc1 == 0 && | |
2930 | ldt_entry->acc2 == 0) | |
2931 | break; /* end of table */ | |
2932 | /* If key matches, return this entry. */ | |
2933 | if (ldt_entry->sel == key) | |
2934 | return ldt_entry; | |
c906108c | 2935 | } |
c3f6f71d JM |
2936 | /* Loop ended, match not found. */ |
2937 | return NULL; | |
2938 | #else | |
2939 | int nldt, i; | |
2940 | static int nalloc = 0; | |
c906108c | 2941 | |
c3f6f71d JM |
2942 | /* Get the number of LDT entries. */ |
2943 | if (ioctl (pi->ctl_fd, PIOCNLDT, &nldt) < 0) | |
c906108c | 2944 | { |
c3f6f71d JM |
2945 | proc_warn (pi, "proc_get_LDT_entry (PIOCNLDT)", __LINE__); |
2946 | return NULL; | |
c906108c SS |
2947 | } |
2948 | ||
c3f6f71d JM |
2949 | /* Allocate space for the number of LDT entries. */ |
2950 | /* This alloc has to persist, 'cause we return a pointer to it. */ | |
2951 | if (nldt > nalloc) | |
c906108c | 2952 | { |
c3f6f71d JM |
2953 | ldt_entry = (struct ssd *) |
2954 | xrealloc (ldt_entry, (nldt + 1) * sizeof (struct ssd)); | |
2955 | nalloc = nldt; | |
2956 | } | |
2957 | ||
2958 | /* Read the whole table in one gulp. */ | |
2959 | if (ioctl (pi->ctl_fd, PIOCLDT, ldt_entry) < 0) | |
2960 | { | |
2961 | proc_warn (pi, "proc_get_LDT_entry (PIOCLDT)", __LINE__); | |
2962 | return NULL; | |
c906108c SS |
2963 | } |
2964 | ||
c3f6f71d JM |
2965 | /* Search the table and return the (first) entry matching 'key'. */ |
2966 | for (i = 0; i < nldt; i++) | |
2967 | if (ldt_entry[i].sel == key) | |
2968 | return &ldt_entry[i]; | |
c906108c | 2969 | |
c3f6f71d JM |
2970 | /* Loop ended, match not found. */ |
2971 | return NULL; | |
2972 | #endif | |
2973 | } | |
c906108c | 2974 | |
c3f6f71d | 2975 | #endif /* TM_I386SOL2_H */ |
c906108c | 2976 | |
c3f6f71d | 2977 | /* =============== END, non-thread part of /proc "MODULE" =============== */ |
c906108c | 2978 | |
c3f6f71d | 2979 | /* =================== Thread "MODULE" =================== */ |
c906108c | 2980 | |
c3f6f71d JM |
2981 | /* NOTE: you'll see more ifdefs and duplication of functions here, |
2982 | since there is a different way to do threads on every OS. */ | |
c906108c | 2983 | |
c3f6f71d JM |
2984 | /* |
2985 | * Function: proc_get_nthreads | |
2986 | * | |
2987 | * Return the number of threads for the process | |
2988 | */ | |
c906108c | 2989 | |
c3f6f71d JM |
2990 | #if defined (PIOCNTHR) && defined (PIOCTLIST) |
2991 | /* | |
2992 | * OSF version | |
2993 | */ | |
2994 | int | |
fba45db2 | 2995 | proc_get_nthreads (procinfo *pi) |
c3f6f71d JM |
2996 | { |
2997 | int nthreads = 0; | |
c906108c | 2998 | |
c3f6f71d JM |
2999 | if (ioctl (pi->ctl_fd, PIOCNTHR, &nthreads) < 0) |
3000 | proc_warn (pi, "procfs: PIOCNTHR failed", __LINE__); | |
c906108c | 3001 | |
c3f6f71d | 3002 | return nthreads; |
c906108c SS |
3003 | } |
3004 | ||
c3f6f71d JM |
3005 | #else |
3006 | #if defined (SYS_lwpcreate) || defined (SYS_lwp_create) /* FIXME: multiple */ | |
3007 | /* | |
3008 | * Solaris and Unixware version | |
3009 | */ | |
3010 | int | |
fba45db2 | 3011 | proc_get_nthreads (procinfo *pi) |
c906108c | 3012 | { |
c3f6f71d JM |
3013 | if (!pi->status_valid) |
3014 | if (!proc_get_status (pi)) | |
3015 | return 0; | |
c5aa993b | 3016 | |
c3f6f71d JM |
3017 | /* |
3018 | * NEW_PROC_API: only works for the process procinfo, | |
3019 | * because the LWP procinfos do not get prstatus filled in. | |
3020 | */ | |
3021 | #ifdef NEW_PROC_API | |
3022 | if (pi->tid != 0) /* find the parent process procinfo */ | |
3023 | pi = find_procinfo_or_die (pi->pid, 0); | |
c5aa993b | 3024 | #endif |
c3f6f71d | 3025 | return pi->prstatus.pr_nlwp; |
c906108c SS |
3026 | } |
3027 | ||
c3f6f71d JM |
3028 | #else |
3029 | /* | |
3030 | * Default version | |
3031 | */ | |
3032 | int | |
fba45db2 | 3033 | proc_get_nthreads (procinfo *pi) |
c906108c | 3034 | { |
c3f6f71d JM |
3035 | return 0; |
3036 | } | |
3037 | #endif | |
3038 | #endif | |
3039 | ||
3040 | /* | |
3041 | * Function: proc_get_current_thread (LWP version) | |
3042 | * | |
3043 | * Return the ID of the thread that had an event of interest. | |
3044 | * (ie. the one that hit a breakpoint or other traced event). | |
3045 | * All other things being equal, this should be the ID of a | |
3046 | * thread that is currently executing. | |
3047 | */ | |
3048 | ||
3049 | #if defined (SYS_lwpcreate) || defined (SYS_lwp_create) /* FIXME: multiple */ | |
3050 | /* | |
3051 | * Solaris and Unixware version | |
3052 | */ | |
3053 | int | |
fba45db2 | 3054 | proc_get_current_thread (procinfo *pi) |
c3f6f71d JM |
3055 | { |
3056 | /* | |
3057 | * Note: this should be applied to the root procinfo for the process, | |
3058 | * not to the procinfo for an LWP. If applied to the procinfo for | |
3059 | * an LWP, it will simply return that LWP's ID. In that case, | |
3060 | * find the parent process procinfo. | |
3061 | */ | |
3062 | ||
3063 | if (pi->tid != 0) | |
3064 | pi = find_procinfo_or_die (pi->pid, 0); | |
3065 | ||
3066 | if (!pi->status_valid) | |
3067 | if (!proc_get_status (pi)) | |
3068 | return 0; | |
3069 | ||
3070 | #ifdef NEW_PROC_API | |
3071 | return pi->prstatus.pr_lwp.pr_lwpid; | |
c906108c | 3072 | #else |
c3f6f71d | 3073 | return pi->prstatus.pr_who; |
c906108c | 3074 | #endif |
c3f6f71d | 3075 | } |
c906108c | 3076 | |
c3f6f71d JM |
3077 | #else |
3078 | #if defined (PIOCNTHR) && defined (PIOCTLIST) | |
3079 | /* | |
3080 | * OSF version | |
3081 | */ | |
3082 | int | |
fba45db2 | 3083 | proc_get_current_thread (procinfo *pi) |
c3f6f71d JM |
3084 | { |
3085 | #if 0 /* FIXME: not ready for prime time? */ | |
3086 | return pi->prstatus.pr_tid; | |
3087 | #else | |
3088 | return 0; | |
3089 | #endif | |
c906108c SS |
3090 | } |
3091 | ||
c3f6f71d JM |
3092 | #else |
3093 | /* | |
3094 | * Default version | |
3095 | */ | |
3096 | int | |
fba45db2 | 3097 | proc_get_current_thread (procinfo *pi) |
c906108c | 3098 | { |
c3f6f71d JM |
3099 | return 0; |
3100 | } | |
3101 | ||
3102 | #endif | |
3103 | #endif | |
c906108c | 3104 | |
c3f6f71d JM |
3105 | /* |
3106 | * Function: proc_update_threads | |
3107 | * | |
3108 | * Discover the IDs of all the threads within the process, and | |
3109 | * create a procinfo for each of them (chained to the parent). | |
3110 | * | |
3111 | * This unfortunately requires a different method on every OS. | |
3112 | * | |
3113 | * Return: non-zero for success, zero for failure. | |
3114 | */ | |
c906108c | 3115 | |
c3f6f71d | 3116 | int |
fba45db2 | 3117 | proc_delete_dead_threads (procinfo *parent, procinfo *thread, void *ignore) |
c3f6f71d JM |
3118 | { |
3119 | if (thread && parent) /* sanity */ | |
c906108c | 3120 | { |
c3f6f71d JM |
3121 | thread->status_valid = 0; |
3122 | if (!proc_get_status (thread)) | |
3123 | destroy_one_procinfo (&parent->thread_list, thread); | |
3124 | } | |
3125 | return 0; /* keep iterating */ | |
3126 | } | |
c5aa993b | 3127 | |
c3f6f71d JM |
3128 | #if defined (PIOCLSTATUS) |
3129 | /* | |
3130 | * Solaris 2.5 (ioctl) version | |
3131 | */ | |
3132 | int | |
fba45db2 | 3133 | proc_update_threads (procinfo *pi) |
c3f6f71d JM |
3134 | { |
3135 | gdb_prstatus_t *prstatus; | |
3136 | struct cleanup *old_chain = NULL; | |
3137 | procinfo *thread; | |
3138 | int nlwp, i; | |
3139 | ||
3140 | /* | |
3141 | * We should never have to apply this operation to any procinfo | |
3142 | * except the one for the main process. If that ever changes | |
3143 | * for any reason, then take out the following clause and | |
3144 | * replace it with one that makes sure the ctl_fd is open. | |
3145 | */ | |
3146 | ||
3147 | if (pi->tid != 0) | |
3148 | pi = find_procinfo_or_die (pi->pid, 0); | |
3149 | ||
3150 | proc_iterate_over_threads (pi, proc_delete_dead_threads, NULL); | |
3151 | ||
3152 | if ((nlwp = proc_get_nthreads (pi)) <= 1) | |
3153 | return 1; /* Process is not multi-threaded; nothing to do. */ | |
3154 | ||
3c37485b | 3155 | prstatus = xmalloc (sizeof (gdb_prstatus_t) * (nlwp + 1)); |
c3f6f71d | 3156 | |
b8c9b27d | 3157 | old_chain = make_cleanup (xfree, prstatus); |
c3f6f71d JM |
3158 | if (ioctl (pi->ctl_fd, PIOCLSTATUS, prstatus) < 0) |
3159 | proc_error (pi, "update_threads (PIOCLSTATUS)", __LINE__); | |
3160 | ||
3161 | /* Skip element zero, which represents the process as a whole. */ | |
3162 | for (i = 1; i < nlwp + 1; i++) | |
3163 | { | |
3164 | if ((thread = create_procinfo (pi->pid, prstatus[i].pr_who)) == NULL) | |
3165 | proc_error (pi, "update_threads, create_procinfo", __LINE__); | |
c5aa993b | 3166 | |
c3f6f71d JM |
3167 | memcpy (&thread->prstatus, &prstatus[i], sizeof (*prstatus)); |
3168 | thread->status_valid = 1; | |
3169 | } | |
3170 | pi->threads_valid = 1; | |
3171 | do_cleanups (old_chain); | |
3172 | return 1; | |
3173 | } | |
3174 | #else | |
3175 | #ifdef NEW_PROC_API | |
3176 | /* | |
3177 | * Unixware and Solaris 6 (and later) version | |
3178 | */ | |
004527cb AC |
3179 | static void |
3180 | do_closedir_cleanup (void *dir) | |
3181 | { | |
3182 | closedir (dir); | |
3183 | } | |
3184 | ||
c3f6f71d | 3185 | int |
fba45db2 | 3186 | proc_update_threads (procinfo *pi) |
c3f6f71d JM |
3187 | { |
3188 | char pathname[MAX_PROC_NAME_SIZE + 16]; | |
3189 | struct dirent *direntry; | |
3190 | struct cleanup *old_chain = NULL; | |
3191 | procinfo *thread; | |
3192 | DIR *dirp; | |
3193 | int lwpid; | |
3194 | ||
3195 | /* | |
3196 | * We should never have to apply this operation to any procinfo | |
3197 | * except the one for the main process. If that ever changes | |
3198 | * for any reason, then take out the following clause and | |
3199 | * replace it with one that makes sure the ctl_fd is open. | |
3200 | */ | |
3201 | ||
3202 | if (pi->tid != 0) | |
3203 | pi = find_procinfo_or_die (pi->pid, 0); | |
3204 | ||
3205 | proc_iterate_over_threads (pi, proc_delete_dead_threads, NULL); | |
3206 | ||
3207 | /* | |
3208 | * Unixware | |
3209 | * | |
3210 | * Note: this brute-force method is the only way I know of | |
3211 | * to accomplish this task on Unixware. This method will | |
3212 | * also work on Solaris 2.6 and 2.7. There is a much simpler | |
3213 | * and more elegant way to do this on Solaris, but the margins | |
3214 | * of this manuscript are too small to write it here... ;-) | |
3215 | */ | |
3216 | ||
3217 | strcpy (pathname, pi->pathname); | |
3218 | strcat (pathname, "/lwp"); | |
3219 | if ((dirp = opendir (pathname)) == NULL) | |
3220 | proc_error (pi, "update_threads, opendir", __LINE__); | |
3221 | ||
004527cb | 3222 | old_chain = make_cleanup (do_closedir_cleanup, dirp); |
c3f6f71d JM |
3223 | while ((direntry = readdir (dirp)) != NULL) |
3224 | if (direntry->d_name[0] != '.') /* skip '.' and '..' */ | |
3225 | { | |
3226 | lwpid = atoi (&direntry->d_name[0]); | |
3227 | if ((thread = create_procinfo (pi->pid, lwpid)) == NULL) | |
3228 | proc_error (pi, "update_threads, create_procinfo", __LINE__); | |
3229 | } | |
3230 | pi->threads_valid = 1; | |
3231 | do_cleanups (old_chain); | |
3232 | return 1; | |
3233 | } | |
3234 | #else | |
3235 | #ifdef PIOCTLIST | |
3236 | /* | |
3237 | * OSF version | |
3238 | */ | |
3239 | int | |
fba45db2 | 3240 | proc_update_threads (procinfo *pi) |
c3f6f71d JM |
3241 | { |
3242 | int nthreads, i; | |
3243 | tid_t *threads; | |
3244 | ||
3245 | /* | |
3246 | * We should never have to apply this operation to any procinfo | |
3247 | * except the one for the main process. If that ever changes | |
3248 | * for any reason, then take out the following clause and | |
3249 | * replace it with one that makes sure the ctl_fd is open. | |
3250 | */ | |
3251 | ||
3252 | if (pi->tid != 0) | |
3253 | pi = find_procinfo_or_die (pi->pid, 0); | |
3254 | ||
3255 | proc_iterate_over_threads (pi, proc_delete_dead_threads, NULL); | |
3256 | ||
3257 | nthreads = proc_get_nthreads (pi); | |
3258 | if (nthreads < 2) | |
3259 | return 0; /* nothing to do for 1 or fewer threads */ | |
3260 | ||
3c37485b | 3261 | threads = xmalloc (nthreads * sizeof (tid_t)); |
c3f6f71d JM |
3262 | |
3263 | if (ioctl (pi->ctl_fd, PIOCTLIST, threads) < 0) | |
3264 | proc_error (pi, "procfs: update_threads (PIOCTLIST)", __LINE__); | |
3265 | ||
3266 | for (i = 0; i < nthreads; i++) | |
3267 | { | |
3268 | if (!find_procinfo (pi->pid, threads[i])) | |
3269 | if (!create_procinfo (pi->pid, threads[i])) | |
3270 | proc_error (pi, "update_threads, create_procinfo", __LINE__); | |
c906108c | 3271 | } |
c3f6f71d JM |
3272 | pi->threads_valid = 1; |
3273 | return 1; | |
c906108c | 3274 | } |
c3f6f71d JM |
3275 | #else |
3276 | /* | |
3277 | * Default version | |
3278 | */ | |
3279 | int | |
fba45db2 | 3280 | proc_update_threads (procinfo *pi) |
c3f6f71d JM |
3281 | { |
3282 | return 0; | |
3283 | } | |
3284 | #endif /* OSF PIOCTLIST */ | |
3285 | #endif /* NEW_PROC_API */ | |
3286 | #endif /* SOL 2.5 PIOCLSTATUS */ | |
c906108c | 3287 | |
c3f6f71d JM |
3288 | /* |
3289 | * Function: proc_iterate_over_threads | |
3290 | * | |
3291 | * Description: | |
3292 | * Given a pointer to a function, call that function once | |
3293 | * for each lwp in the procinfo list, until the function | |
3294 | * returns non-zero, in which event return the value | |
3295 | * returned by the function. | |
3296 | * | |
3297 | * Note: this function does NOT call update_threads. | |
3298 | * If you want to discover new threads first, you must | |
3299 | * call that function explicitly. This function just makes | |
3300 | * a quick pass over the currently-known procinfos. | |
3301 | * | |
3302 | * Arguments: | |
3303 | * pi - parent process procinfo | |
3304 | * func - per-thread function | |
3305 | * ptr - opaque parameter for function. | |
3306 | * | |
3307 | * Return: | |
3308 | * First non-zero return value from the callee, or zero. | |
3309 | */ | |
3310 | ||
3311 | int | |
d0849a9a KB |
3312 | proc_iterate_over_threads (procinfo *pi, |
3313 | int (*func) (procinfo *, procinfo *, void *), | |
3314 | void *ptr) | |
c906108c | 3315 | { |
c3f6f71d JM |
3316 | procinfo *thread, *next; |
3317 | int retval = 0; | |
c906108c | 3318 | |
c3f6f71d JM |
3319 | /* |
3320 | * We should never have to apply this operation to any procinfo | |
3321 | * except the one for the main process. If that ever changes | |
3322 | * for any reason, then take out the following clause and | |
3323 | * replace it with one that makes sure the ctl_fd is open. | |
3324 | */ | |
3325 | ||
3326 | if (pi->tid != 0) | |
3327 | pi = find_procinfo_or_die (pi->pid, 0); | |
3328 | ||
3329 | for (thread = pi->thread_list; thread != NULL; thread = next) | |
c906108c | 3330 | { |
c3f6f71d JM |
3331 | next = thread->next; /* in case thread is destroyed */ |
3332 | if ((retval = (*func) (pi, thread, ptr)) != 0) | |
3333 | break; | |
c906108c | 3334 | } |
c3f6f71d JM |
3335 | |
3336 | return retval; | |
c906108c SS |
3337 | } |
3338 | ||
c3f6f71d JM |
3339 | /* =================== END, Thread "MODULE" =================== */ |
3340 | ||
3341 | /* =================== END, /proc "MODULE" =================== */ | |
3342 | ||
3343 | /* =================== GDB "MODULE" =================== */ | |
3344 | ||
3345 | /* | |
3346 | * Here are all of the gdb target vector functions and their friends. | |
3347 | */ | |
3348 | ||
39f77062 | 3349 | static ptid_t do_attach (ptid_t ptid); |
a14ed312 | 3350 | static void do_detach (int signo); |
37de36c6 | 3351 | static int register_gdb_signals (procinfo *, gdb_sigset_t *); |
c3f6f71d JM |
3352 | |
3353 | /* | |
3354 | * Function: procfs_debug_inferior | |
3355 | * | |
3356 | * Sets up the inferior to be debugged. | |
3357 | * Registers to trace signals, hardware faults, and syscalls. | |
3358 | * Note: does not set RLC flag: caller may want to customize that. | |
3359 | * | |
3360 | * Returns: zero for success (note! unlike most functions in this module) | |
3361 | * On failure, returns the LINE NUMBER where it failed! | |
3362 | */ | |
3363 | ||
3364 | static int | |
fba45db2 | 3365 | procfs_debug_inferior (procinfo *pi) |
c906108c | 3366 | { |
c3f6f71d | 3367 | fltset_t traced_faults; |
37de36c6 KB |
3368 | gdb_sigset_t traced_signals; |
3369 | sysset_t *traced_syscall_entries; | |
3370 | sysset_t *traced_syscall_exits; | |
3371 | int status; | |
c906108c | 3372 | |
c3f6f71d JM |
3373 | #ifdef PROCFS_DONT_TRACE_FAULTS |
3374 | /* On some systems (OSF), we don't trace hardware faults. | |
3375 | Apparently it's enough that we catch them as signals. | |
3376 | Wonder why we don't just do that in general? */ | |
3377 | premptyset (&traced_faults); /* don't trace faults. */ | |
3378 | #else | |
3379 | /* Register to trace hardware faults in the child. */ | |
3380 | prfillset (&traced_faults); /* trace all faults... */ | |
3381 | prdelset (&traced_faults, FLTPAGE); /* except page fault. */ | |
3382 | #endif | |
3383 | if (!proc_set_traced_faults (pi, &traced_faults)) | |
3384 | return __LINE__; | |
c906108c | 3385 | |
c3f6f71d JM |
3386 | /* Register to trace selected signals in the child. */ |
3387 | premptyset (&traced_signals); | |
3388 | if (!register_gdb_signals (pi, &traced_signals)) | |
3389 | return __LINE__; | |
3390 | ||
37de36c6 | 3391 | |
c3f6f71d | 3392 | /* Register to trace the 'exit' system call (on entry). */ |
37de36c6 KB |
3393 | traced_syscall_entries = sysset_t_alloc (pi); |
3394 | gdb_premptysysset (traced_syscall_entries); | |
3395 | #ifdef SYS_exit | |
3396 | gdb_praddsysset (traced_syscall_entries, SYS_exit); | |
3397 | #endif | |
c3f6f71d | 3398 | #ifdef SYS_lwpexit |
37de36c6 | 3399 | gdb_praddsysset (traced_syscall_entries, SYS_lwpexit); /* And _lwp_exit... */ |
c3f6f71d JM |
3400 | #endif |
3401 | #ifdef SYS_lwp_exit | |
37de36c6 KB |
3402 | gdb_praddsysset (traced_syscall_entries, SYS_lwp_exit); |
3403 | #endif | |
3404 | #ifdef DYNAMIC_SYSCALLS | |
3405 | { | |
3406 | int callnum = find_syscall (pi, "_exit"); | |
3407 | if (callnum >= 0) | |
3408 | gdb_praddsysset (traced_syscall_entries, callnum); | |
3409 | } | |
c906108c SS |
3410 | #endif |
3411 | ||
37de36c6 KB |
3412 | status = proc_set_traced_sysentry (pi, traced_syscall_entries); |
3413 | xfree (traced_syscall_entries); | |
3414 | if (!status) | |
c3f6f71d JM |
3415 | return __LINE__; |
3416 | ||
3417 | #ifdef PRFS_STOPEXEC /* defined on OSF */ | |
3418 | /* OSF method for tracing exec syscalls. Quoting: | |
3419 | Under Alpha OSF/1 we have to use a PIOCSSPCACT ioctl to trace | |
3420 | exits from exec system calls because of the user level loader. */ | |
3421 | /* FIXME: make nice and maybe move into an access function. */ | |
3422 | { | |
3423 | int prfs_flags; | |
3424 | ||
3425 | if (ioctl (pi->ctl_fd, PIOCGSPCACT, &prfs_flags) < 0) | |
3426 | return __LINE__; | |
3427 | ||
3428 | prfs_flags |= PRFS_STOPEXEC; | |
3429 | ||
3430 | if (ioctl (pi->ctl_fd, PIOCSSPCACT, &prfs_flags) < 0) | |
3431 | return __LINE__; | |
3432 | } | |
3433 | #else /* not PRFS_STOPEXEC */ | |
3434 | /* Everyone else's (except OSF) method for tracing exec syscalls */ | |
3435 | /* GW: Rationale... | |
3436 | Not all systems with /proc have all the exec* syscalls with the same | |
3437 | names. On the SGI, for example, there is no SYS_exec, but there | |
3438 | *is* a SYS_execv. So, we try to account for that. */ | |
3439 | ||
37de36c6 KB |
3440 | traced_syscall_exits = sysset_t_alloc (pi); |
3441 | gdb_premptysysset (traced_syscall_exits); | |
c3f6f71d | 3442 | #ifdef SYS_exec |
37de36c6 | 3443 | gdb_praddsysset (traced_syscall_exits, SYS_exec); |
c3f6f71d JM |
3444 | #endif |
3445 | #ifdef SYS_execve | |
37de36c6 | 3446 | gdb_praddsysset (traced_syscall_exits, SYS_execve); |
c3f6f71d JM |
3447 | #endif |
3448 | #ifdef SYS_execv | |
37de36c6 | 3449 | gdb_praddsysset (traced_syscall_exits, SYS_execv); |
c3f6f71d | 3450 | #endif |
c5aa993b | 3451 | |
c3f6f71d | 3452 | #ifdef SYS_lwpcreate |
37de36c6 KB |
3453 | gdb_praddsysset (traced_syscall_exits, SYS_lwpcreate); |
3454 | gdb_praddsysset (traced_syscall_exits, SYS_lwpexit); | |
c906108c | 3455 | #endif |
c5aa993b | 3456 | |
c3f6f71d | 3457 | #ifdef SYS_lwp_create /* FIXME: once only, please */ |
37de36c6 KB |
3458 | gdb_praddsysset (traced_syscall_exits, SYS_lwp_create); |
3459 | gdb_praddsysset (traced_syscall_exits, SYS_lwp_exit); | |
c3f6f71d | 3460 | #endif |
c5aa993b | 3461 | |
37de36c6 KB |
3462 | #ifdef DYNAMIC_SYSCALLS |
3463 | { | |
3464 | int callnum = find_syscall (pi, "execve"); | |
3465 | if (callnum >= 0) | |
3466 | gdb_praddsysset (traced_syscall_exits, callnum); | |
3467 | callnum = find_syscall (pi, "ra_execve"); | |
3468 | if (callnum >= 0) | |
3469 | gdb_praddsysset (traced_syscall_exits, callnum); | |
3470 | } | |
3471 | #endif | |
c906108c | 3472 | |
37de36c6 KB |
3473 | status = proc_set_traced_sysexit (pi, traced_syscall_exits); |
3474 | xfree (traced_syscall_exits); | |
3475 | if (!status) | |
c3f6f71d JM |
3476 | return __LINE__; |
3477 | ||
3478 | #endif /* PRFS_STOPEXEC */ | |
3479 | return 0; | |
c906108c SS |
3480 | } |
3481 | ||
c3f6f71d | 3482 | static void |
fba45db2 | 3483 | procfs_attach (char *args, int from_tty) |
c906108c | 3484 | { |
c3f6f71d JM |
3485 | char *exec_file; |
3486 | int pid; | |
3487 | ||
3488 | if (!args) | |
3489 | error_no_arg ("process-id to attach"); | |
3490 | ||
3491 | pid = atoi (args); | |
3492 | if (pid == getpid ()) | |
3493 | error ("Attaching GDB to itself is not a good idea..."); | |
c906108c | 3494 | |
c3f6f71d | 3495 | if (from_tty) |
c906108c | 3496 | { |
c3f6f71d JM |
3497 | exec_file = get_exec_file (0); |
3498 | ||
3499 | if (exec_file) | |
3500 | printf_filtered ("Attaching to program `%s', %s\n", | |
39f77062 | 3501 | exec_file, target_pid_to_str (pid_to_ptid (pid))); |
c3f6f71d | 3502 | else |
39f77062 KB |
3503 | printf_filtered ("Attaching to %s\n", |
3504 | target_pid_to_str (pid_to_ptid (pid))); | |
c3f6f71d JM |
3505 | |
3506 | fflush (stdout); | |
c906108c | 3507 | } |
39f77062 | 3508 | inferior_ptid = do_attach (pid_to_ptid (pid)); |
c3f6f71d JM |
3509 | push_target (&procfs_ops); |
3510 | } | |
3511 | ||
3512 | static void | |
fba45db2 | 3513 | procfs_detach (char *args, int from_tty) |
c3f6f71d JM |
3514 | { |
3515 | char *exec_file; | |
3516 | int signo = 0; | |
3517 | ||
3518 | if (from_tty) | |
c906108c | 3519 | { |
c3f6f71d JM |
3520 | exec_file = get_exec_file (0); |
3521 | if (exec_file == 0) | |
3522 | exec_file = ""; | |
3523 | printf_filtered ("Detaching from program: %s %s\n", | |
39f77062 | 3524 | exec_file, target_pid_to_str (inferior_ptid)); |
c3f6f71d | 3525 | fflush (stdout); |
c906108c | 3526 | } |
c3f6f71d JM |
3527 | if (args) |
3528 | signo = atoi (args); | |
3529 | ||
3530 | do_detach (signo); | |
39f77062 | 3531 | inferior_ptid = null_ptid; |
c3f6f71d | 3532 | unpush_target (&procfs_ops); /* Pop out of handling an inferior */ |
c906108c SS |
3533 | } |
3534 | ||
39f77062 KB |
3535 | static ptid_t |
3536 | do_attach (ptid_t ptid) | |
c906108c | 3537 | { |
c3f6f71d JM |
3538 | procinfo *pi; |
3539 | int fail; | |
3540 | ||
39f77062 | 3541 | if ((pi = create_procinfo (PIDGET (ptid), 0)) == NULL) |
c3f6f71d JM |
3542 | perror ("procfs: out of memory in 'attach'"); |
3543 | ||
3544 | if (!open_procinfo_files (pi, FD_CTL)) | |
3545 | { | |
3546 | fprintf_filtered (gdb_stderr, "procfs:%d -- ", __LINE__); | |
3547 | sprintf (errmsg, "do_attach: couldn't open /proc file for process %d", | |
39f77062 | 3548 | PIDGET (ptid)); |
c3f6f71d JM |
3549 | dead_procinfo (pi, errmsg, NOKILL); |
3550 | } | |
c906108c | 3551 | |
c3f6f71d JM |
3552 | /* Stop the process (if it isn't already stopped). */ |
3553 | if (proc_flags (pi) & (PR_STOPPED | PR_ISTOP)) | |
c906108c | 3554 | { |
c3f6f71d JM |
3555 | pi->was_stopped = 1; |
3556 | proc_prettyprint_why (proc_why (pi), proc_what (pi), 1); | |
c906108c SS |
3557 | } |
3558 | else | |
3559 | { | |
c3f6f71d JM |
3560 | pi->was_stopped = 0; |
3561 | /* Set the process to run again when we close it. */ | |
3562 | if (!proc_set_run_on_last_close (pi)) | |
3563 | dead_procinfo (pi, "do_attach: couldn't set RLC.", NOKILL); | |
3564 | ||
3565 | /* Now stop the process. */ | |
3566 | if (!proc_stop_process (pi)) | |
3567 | dead_procinfo (pi, "do_attach: couldn't stop the process.", NOKILL); | |
3568 | pi->ignore_next_sigstop = 1; | |
c906108c | 3569 | } |
c3f6f71d JM |
3570 | /* Save some of the /proc state to be restored if we detach. */ |
3571 | if (!proc_get_traced_faults (pi, &pi->saved_fltset)) | |
3572 | dead_procinfo (pi, "do_attach: couldn't save traced faults.", NOKILL); | |
3573 | if (!proc_get_traced_signals (pi, &pi->saved_sigset)) | |
3574 | dead_procinfo (pi, "do_attach: couldn't save traced signals.", NOKILL); | |
37de36c6 | 3575 | if (!proc_get_traced_sysentry (pi, pi->saved_entryset)) |
c3f6f71d JM |
3576 | dead_procinfo (pi, "do_attach: couldn't save traced syscall entries.", |
3577 | NOKILL); | |
37de36c6 | 3578 | if (!proc_get_traced_sysexit (pi, pi->saved_exitset)) |
c3f6f71d JM |
3579 | dead_procinfo (pi, "do_attach: couldn't save traced syscall exits.", |
3580 | NOKILL); | |
3581 | if (!proc_get_held_signals (pi, &pi->saved_sighold)) | |
3582 | dead_procinfo (pi, "do_attach: couldn't save held signals.", NOKILL); | |
3583 | ||
3584 | if ((fail = procfs_debug_inferior (pi)) != 0) | |
3585 | dead_procinfo (pi, "do_attach: failed in procfs_debug_inferior", NOKILL); | |
3586 | ||
3587 | /* Let GDB know that the inferior was attached. */ | |
3588 | attach_flag = 1; | |
3589 | return MERGEPID (pi->pid, proc_get_current_thread (pi)); | |
c906108c SS |
3590 | } |
3591 | ||
3592 | static void | |
fba45db2 | 3593 | do_detach (int signo) |
c906108c | 3594 | { |
c3f6f71d | 3595 | procinfo *pi; |
c906108c | 3596 | |
c3f6f71d | 3597 | /* Find procinfo for the main process */ |
39f77062 | 3598 | pi = find_procinfo_or_die (PIDGET (inferior_ptid), 0); /* FIXME: threads */ |
c3f6f71d JM |
3599 | if (signo) |
3600 | if (!proc_set_current_signal (pi, signo)) | |
3601 | proc_warn (pi, "do_detach, set_current_signal", __LINE__); | |
c5aa993b | 3602 | |
c3f6f71d JM |
3603 | if (!proc_set_traced_signals (pi, &pi->saved_sigset)) |
3604 | proc_warn (pi, "do_detach, set_traced_signal", __LINE__); | |
c906108c | 3605 | |
c3f6f71d JM |
3606 | if (!proc_set_traced_faults (pi, &pi->saved_fltset)) |
3607 | proc_warn (pi, "do_detach, set_traced_faults", __LINE__); | |
3608 | ||
37de36c6 | 3609 | if (!proc_set_traced_sysentry (pi, pi->saved_entryset)) |
c3f6f71d JM |
3610 | proc_warn (pi, "do_detach, set_traced_sysentry", __LINE__); |
3611 | ||
37de36c6 | 3612 | if (!proc_set_traced_sysexit (pi, pi->saved_exitset)) |
c3f6f71d JM |
3613 | proc_warn (pi, "do_detach, set_traced_sysexit", __LINE__); |
3614 | ||
3615 | if (!proc_set_held_signals (pi, &pi->saved_sighold)) | |
3616 | proc_warn (pi, "do_detach, set_held_signals", __LINE__); | |
3617 | ||
3618 | if (signo || (proc_flags (pi) & (PR_STOPPED | PR_ISTOP))) | |
3619 | if (signo || !(pi->was_stopped) || | |
3620 | query ("Was stopped when attached, make it runnable again? ")) | |
3621 | { | |
3622 | /* Clear any pending signal. */ | |
3623 | if (!proc_clear_current_fault (pi)) | |
3624 | proc_warn (pi, "do_detach, clear_current_fault", __LINE__); | |
3625 | ||
3626 | if (!proc_set_run_on_last_close (pi)) | |
3627 | proc_warn (pi, "do_detach, set_rlc", __LINE__); | |
3628 | } | |
3629 | ||
3630 | attach_flag = 0; | |
3631 | destroy_procinfo (pi); | |
c906108c SS |
3632 | } |
3633 | ||
c3f6f71d JM |
3634 | /* |
3635 | * fetch_registers | |
3636 | * | |
3637 | * Since the /proc interface cannot give us individual registers, | |
3638 | * we pay no attention to the (regno) argument, and just fetch them all. | |
3639 | * This results in the possibility that we will do unnecessarily many | |
3640 | * fetches, since we may be called repeatedly for individual registers. | |
3641 | * So we cache the results, and mark the cache invalid when the process | |
3642 | * is resumed. | |
3643 | */ | |
3644 | ||
c906108c | 3645 | static void |
fba45db2 | 3646 | procfs_fetch_registers (int regno) |
c906108c | 3647 | { |
c3f6f71d JM |
3648 | gdb_fpregset_t *fpregs; |
3649 | gdb_gregset_t *gregs; | |
3650 | procinfo *pi; | |
3651 | int pid; | |
3652 | int tid; | |
c906108c | 3653 | |
39f77062 KB |
3654 | pid = PIDGET (inferior_ptid); |
3655 | tid = TIDGET (inferior_ptid); | |
c3f6f71d JM |
3656 | |
3657 | /* First look up procinfo for the main process. */ | |
3658 | pi = find_procinfo_or_die (pid, 0); | |
3659 | ||
3660 | /* If the event thread is not the same as GDB's requested thread | |
39f77062 | 3661 | (ie. inferior_ptid), then look up procinfo for the requested |
c3f6f71d JM |
3662 | thread. */ |
3663 | if ((tid != 0) && | |
3664 | (tid != proc_get_current_thread (pi))) | |
3665 | pi = find_procinfo_or_die (pid, tid); | |
3666 | ||
3667 | if (pi == NULL) | |
3668 | error ("procfs: fetch_registers failed to find procinfo for %s", | |
39f77062 | 3669 | target_pid_to_str (inferior_ptid)); |
c3f6f71d JM |
3670 | |
3671 | if ((gregs = proc_get_gregs (pi)) == NULL) | |
3672 | proc_error (pi, "fetch_registers, get_gregs", __LINE__); | |
3673 | ||
3674 | supply_gregset (gregs); | |
3675 | ||
60054393 MS |
3676 | if (FP0_REGNUM >= 0) /* need floating point? */ |
3677 | { | |
3678 | if ((regno >= 0 && regno < FP0_REGNUM) || | |
3679 | regno == PC_REGNUM || | |
3680 | (NPC_REGNUM >= 0 && regno == NPC_REGNUM) || | |
3681 | regno == FP_REGNUM || | |
3682 | regno == SP_REGNUM) | |
3683 | return; /* not a floating point register */ | |
c5aa993b | 3684 | |
60054393 MS |
3685 | if ((fpregs = proc_get_fpregs (pi)) == NULL) |
3686 | proc_error (pi, "fetch_registers, get_fpregs", __LINE__); | |
c906108c | 3687 | |
60054393 MS |
3688 | supply_fpregset (fpregs); |
3689 | } | |
c906108c SS |
3690 | } |
3691 | ||
c3f6f71d JM |
3692 | /* Get ready to modify the registers array. On machines which store |
3693 | individual registers, this doesn't need to do anything. On | |
3694 | machines which store all the registers in one fell swoop, such as | |
3695 | /proc, this makes sure that registers contains all the registers | |
3696 | from the program being debugged. */ | |
3697 | ||
c906108c | 3698 | static void |
fba45db2 | 3699 | procfs_prepare_to_store (void) |
c906108c | 3700 | { |
c3f6f71d JM |
3701 | #ifdef CHILD_PREPARE_TO_STORE |
3702 | CHILD_PREPARE_TO_STORE (); | |
c906108c | 3703 | #endif |
c906108c SS |
3704 | } |
3705 | ||
3706 | /* | |
c3f6f71d JM |
3707 | * store_registers |
3708 | * | |
3709 | * Since the /proc interface will not read individual registers, | |
3710 | * we will cache these requests until the process is resumed, and | |
3711 | * only then write them back to the inferior process. | |
3712 | * | |
3713 | * FIXME: is that a really bad idea? Have to think about cases | |
3714 | * where writing one register might affect the value of others, etc. | |
3715 | */ | |
c906108c | 3716 | |
c3f6f71d | 3717 | static void |
fba45db2 | 3718 | procfs_store_registers (int regno) |
c3f6f71d JM |
3719 | { |
3720 | gdb_fpregset_t *fpregs; | |
3721 | gdb_gregset_t *gregs; | |
3722 | procinfo *pi; | |
3723 | int pid; | |
3724 | int tid; | |
c906108c | 3725 | |
39f77062 KB |
3726 | pid = PIDGET (inferior_ptid); |
3727 | tid = TIDGET (inferior_ptid); | |
c906108c | 3728 | |
c3f6f71d JM |
3729 | /* First find procinfo for main process */ |
3730 | pi = find_procinfo_or_die (pid, 0); | |
3731 | ||
3732 | /* If current lwp for process is not the same as requested thread | |
39f77062 | 3733 | (ie. inferior_ptid), then find procinfo for the requested thread. */ |
c3f6f71d JM |
3734 | |
3735 | if ((tid != 0) && | |
3736 | (tid != proc_get_current_thread (pi))) | |
3737 | pi = find_procinfo_or_die (pid, tid); | |
3738 | ||
3739 | if (pi == NULL) | |
3740 | error ("procfs: store_registers: failed to find procinfo for %s", | |
39f77062 | 3741 | target_pid_to_str (inferior_ptid)); |
c906108c | 3742 | |
c3f6f71d JM |
3743 | if ((gregs = proc_get_gregs (pi)) == NULL) |
3744 | proc_error (pi, "store_registers, get_gregs", __LINE__); | |
c906108c | 3745 | |
c3f6f71d JM |
3746 | fill_gregset (gregs, regno); |
3747 | if (!proc_set_gregs (pi)) | |
3748 | proc_error (pi, "store_registers, set_gregs", __LINE__); | |
c906108c | 3749 | |
60054393 MS |
3750 | if (FP0_REGNUM >= 0) /* need floating point? */ |
3751 | { | |
3752 | if ((regno >= 0 && regno < FP0_REGNUM) || | |
3753 | regno == PC_REGNUM || | |
3754 | (NPC_REGNUM >= 0 && regno == NPC_REGNUM) || | |
3755 | regno == FP_REGNUM || | |
3756 | regno == SP_REGNUM) | |
3757 | return; /* not a floating point register */ | |
3758 | ||
3759 | if ((fpregs = proc_get_fpregs (pi)) == NULL) | |
3760 | proc_error (pi, "store_registers, get_fpregs", __LINE__); | |
3761 | ||
3762 | fill_fpregset (fpregs, regno); | |
3763 | if (!proc_set_fpregs (pi)) | |
3764 | proc_error (pi, "store_registers, set_fpregs", __LINE__); | |
3765 | } | |
c3f6f71d | 3766 | } |
c906108c | 3767 | |
37de36c6 KB |
3768 | static int |
3769 | syscall_is_lwp_exit (procinfo *pi, int scall) | |
3770 | { | |
3771 | ||
3772 | #ifdef SYS_lwp_exit | |
3773 | if (scall == SYS_lwp_exit) | |
3774 | return 1; | |
3775 | #endif | |
3776 | #ifdef SYS_lwpexit | |
3777 | if (scall == SYS_lwpexit) | |
3778 | return 1; | |
3779 | #endif | |
3780 | return 0; | |
3781 | } | |
3782 | ||
3783 | static int | |
3784 | syscall_is_exit (procinfo *pi, int scall) | |
3785 | { | |
3786 | #ifdef SYS_exit | |
3787 | if (scall == SYS_exit) | |
3788 | return 1; | |
3789 | #endif | |
3790 | #ifdef DYNAMIC_SYSCALLS | |
3791 | if (find_syscall (pi, "_exit") == scall) | |
3792 | return 1; | |
3793 | #endif | |
3794 | return 0; | |
3795 | } | |
3796 | ||
3797 | static int | |
3798 | syscall_is_exec (procinfo *pi, int scall) | |
3799 | { | |
3800 | #ifdef SYS_exec | |
3801 | if (scall == SYS_exec) | |
3802 | return 1; | |
3803 | #endif | |
3804 | #ifdef SYS_execv | |
3805 | if (scall == SYS_execv) | |
3806 | return 1; | |
3807 | #endif | |
3808 | #ifdef SYS_execve | |
3809 | if (scall == SYS_execve) | |
3810 | return 1; | |
3811 | #endif | |
3812 | #ifdef DYNAMIC_SYSCALLS | |
3813 | if (find_syscall (pi, "_execve")) | |
3814 | return 1; | |
3815 | if (find_syscall (pi, "ra_execve")) | |
3816 | return 1; | |
3817 | #endif | |
3818 | return 0; | |
3819 | } | |
3820 | ||
3821 | static int | |
3822 | syscall_is_lwp_create (procinfo *pi, int scall) | |
3823 | { | |
3824 | #ifdef SYS_lwp_create | |
3825 | if (scall == SYS_lwp_create) | |
3826 | return 1; | |
3827 | #endif | |
3828 | #ifdef SYS_lwpcreate | |
3829 | if (scall == SYS_lwpcreate) | |
3830 | return 1; | |
3831 | #endif | |
3832 | return 0; | |
3833 | } | |
3834 | ||
c3f6f71d JM |
3835 | /* |
3836 | * Function: target_wait | |
3837 | * | |
3838 | * Retrieve the next stop event from the child process. | |
3839 | * If child has not stopped yet, wait for it to stop. | |
3840 | * Translate /proc eventcodes (or possibly wait eventcodes) | |
3841 | * into gdb internal event codes. | |
3842 | * | |
3843 | * Return: id of process (and possibly thread) that incurred the event. | |
3844 | * event codes are returned thru a pointer parameter. | |
c906108c SS |
3845 | */ |
3846 | ||
39f77062 KB |
3847 | static ptid_t |
3848 | procfs_wait (ptid_t ptid, struct target_waitstatus *status) | |
c906108c | 3849 | { |
c3f6f71d JM |
3850 | /* First cut: loosely based on original version 2.1 */ |
3851 | procinfo *pi; | |
39f77062 KB |
3852 | int wstat; |
3853 | int temp_tid; | |
3854 | ptid_t retval, temp_ptid; | |
c3f6f71d JM |
3855 | int why, what, flags; |
3856 | int retry = 0; | |
c906108c | 3857 | |
c3f6f71d | 3858 | wait_again: |
c906108c | 3859 | |
c3f6f71d JM |
3860 | retry++; |
3861 | wstat = 0; | |
39f77062 | 3862 | retval = pid_to_ptid (-1); |
c906108c | 3863 | |
c3f6f71d | 3864 | /* Find procinfo for main process */ |
39f77062 | 3865 | pi = find_procinfo_or_die (PIDGET (inferior_ptid), 0); |
c3f6f71d | 3866 | if (pi) |
c906108c | 3867 | { |
c3f6f71d JM |
3868 | /* We must assume that the status is stale now... */ |
3869 | pi->status_valid = 0; | |
3870 | pi->gregs_valid = 0; | |
3871 | pi->fpregs_valid = 0; | |
3872 | ||
3873 | #if 0 /* just try this out... */ | |
3874 | flags = proc_flags (pi); | |
3875 | why = proc_why (pi); | |
3876 | if ((flags & PR_STOPPED) && (why == PR_REQUESTED)) | |
3877 | pi->status_valid = 0; /* re-read again, IMMEDIATELY... */ | |
3878 | #endif | |
3879 | /* If child is not stopped, wait for it to stop. */ | |
3880 | if (!(proc_flags (pi) & (PR_STOPPED | PR_ISTOP)) && | |
3881 | !proc_wait_for_stop (pi)) | |
c906108c | 3882 | { |
c3f6f71d JM |
3883 | /* wait_for_stop failed: has the child terminated? */ |
3884 | if (errno == ENOENT) | |
c906108c | 3885 | { |
39f77062 KB |
3886 | int wait_retval; |
3887 | ||
c3f6f71d | 3888 | /* /proc file not found; presumably child has terminated. */ |
39f77062 | 3889 | wait_retval = wait (&wstat); /* "wait" for the child's exit */ |
c3f6f71d | 3890 | |
39f77062 | 3891 | if (wait_retval != PIDGET (inferior_ptid)) /* wrong child? */ |
c3f6f71d | 3892 | error ("procfs: couldn't stop process %d: wait returned %d\n", |
39f77062 | 3893 | PIDGET (inferior_ptid), wait_retval); |
c3f6f71d JM |
3894 | /* FIXME: might I not just use waitpid? |
3895 | Or try find_procinfo to see if I know about this child? */ | |
39f77062 | 3896 | retval = pid_to_ptid (wait_retval); |
c906108c | 3897 | } |
d1566ff5 FN |
3898 | else if (errno == EINTR) |
3899 | goto wait_again; | |
c3f6f71d | 3900 | else |
c906108c | 3901 | { |
c3f6f71d JM |
3902 | /* Unknown error from wait_for_stop. */ |
3903 | proc_error (pi, "target_wait (wait_for_stop)", __LINE__); | |
c906108c | 3904 | } |
c3f6f71d JM |
3905 | } |
3906 | else | |
3907 | { | |
3908 | /* This long block is reached if either: | |
3909 | a) the child was already stopped, or | |
3910 | b) we successfully waited for the child with wait_for_stop. | |
3911 | This block will analyze the /proc status, and translate it | |
3912 | into a waitstatus for GDB. | |
3913 | ||
3914 | If we actually had to call wait because the /proc file | |
3915 | is gone (child terminated), then we skip this block, | |
3916 | because we already have a waitstatus. */ | |
3917 | ||
3918 | flags = proc_flags (pi); | |
3919 | why = proc_why (pi); | |
3920 | what = proc_what (pi); | |
3921 | ||
c3f6f71d | 3922 | if (flags & (PR_STOPPED | PR_ISTOP)) |
c906108c | 3923 | { |
c3f6f71d JM |
3924 | #ifdef PR_ASYNC |
3925 | /* If it's running async (for single_thread control), | |
3926 | set it back to normal again. */ | |
3927 | if (flags & PR_ASYNC) | |
3928 | if (!proc_unset_async (pi)) | |
3929 | proc_error (pi, "target_wait, unset_async", __LINE__); | |
3930 | #endif | |
3931 | ||
3932 | if (info_verbose) | |
3933 | proc_prettyprint_why (why, what, 1); | |
3934 | ||
3935 | /* The 'pid' we will return to GDB is composed of | |
3936 | the process ID plus the lwp ID. */ | |
3937 | retval = MERGEPID (pi->pid, proc_get_current_thread (pi)); | |
3938 | ||
3939 | switch (why) { | |
3940 | case PR_SIGNALLED: | |
3941 | wstat = (what << 8) | 0177; | |
3942 | break; | |
3943 | case PR_SYSENTRY: | |
37de36c6 | 3944 | if (syscall_is_lwp_exit (pi, what)) |
c3f6f71d | 3945 | { |
37de36c6 KB |
3946 | printf_filtered ("[%s exited]\n", |
3947 | target_pid_to_str (retval)); | |
3948 | delete_thread (retval); | |
3949 | status->kind = TARGET_WAITKIND_SPURIOUS; | |
3950 | return retval; | |
3951 | } | |
3952 | else if (syscall_is_exit (pi, what)) | |
3953 | { | |
3954 | /* Handle SYS_exit call only */ | |
3955 | /* Stopped at entry to SYS_exit. | |
3956 | Make it runnable, resume it, then use | |
3957 | the wait system call to get its exit code. | |
3958 | Proc_run_process always clears the current | |
3959 | fault and signal. | |
3960 | Then return its exit status. */ | |
3961 | pi->status_valid = 0; | |
3962 | wstat = 0; | |
3963 | /* FIXME: what we should do is return | |
3964 | TARGET_WAITKIND_SPURIOUS. */ | |
3965 | if (!proc_run_process (pi, 0, 0)) | |
3966 | proc_error (pi, "target_wait, run_process", __LINE__); | |
3967 | if (attach_flag) | |
c3f6f71d | 3968 | { |
37de36c6 KB |
3969 | /* Don't call wait: simulate waiting for exit, |
3970 | return a "success" exit code. Bogus: what if | |
3971 | it returns something else? */ | |
3972 | wstat = 0; | |
39f77062 | 3973 | retval = inferior_ptid; /* ? ? ? */ |
37de36c6 KB |
3974 | } |
3975 | else | |
3976 | { | |
3977 | int temp = wait (&wstat); | |
3978 | ||
3979 | /* FIXME: shouldn't I make sure I get the right | |
3980 | event from the right process? If (for | |
3981 | instance) I have killed an earlier inferior | |
3982 | process but failed to clean up after it | |
3983 | somehow, I could get its termination event | |
3984 | here. */ | |
3985 | ||
3986 | /* If wait returns -1, that's what we return to GDB. */ | |
3987 | if (temp < 0) | |
39f77062 | 3988 | retval = pid_to_ptid (temp); |
c3f6f71d | 3989 | } |
c3f6f71d | 3990 | } |
37de36c6 KB |
3991 | else |
3992 | { | |
3993 | printf_filtered ("procfs: trapped on entry to "); | |
3994 | proc_prettyprint_syscall (proc_what (pi), 0); | |
3995 | printf_filtered ("\n"); | |
3996 | #ifndef PIOCSSPCACT | |
c3f6f71d | 3997 | { |
37de36c6 | 3998 | long i, nsysargs, *sysargs; |
c3f6f71d | 3999 | |
37de36c6 KB |
4000 | if ((nsysargs = proc_nsysarg (pi)) > 0 && |
4001 | (sysargs = proc_sysargs (pi)) != NULL) | |
4002 | { | |
4003 | printf_filtered ("%ld syscall arguments:\n", nsysargs); | |
4004 | for (i = 0; i < nsysargs; i++) | |
4005 | printf_filtered ("#%ld: 0x%08lx\n", | |
4006 | i, sysargs[i]); | |
4007 | } | |
c3f6f71d | 4008 | |
c3f6f71d | 4009 | } |
c3f6f71d | 4010 | #endif |
37de36c6 KB |
4011 | if (status) |
4012 | { | |
4013 | /* How to exit gracefully, returning "unknown event" */ | |
4014 | status->kind = TARGET_WAITKIND_SPURIOUS; | |
39f77062 | 4015 | return inferior_ptid; |
37de36c6 KB |
4016 | } |
4017 | else | |
4018 | { | |
4019 | /* How to keep going without returning to wfi: */ | |
39f77062 | 4020 | target_resume (ptid, 0, TARGET_SIGNAL_0); |
37de36c6 KB |
4021 | goto wait_again; |
4022 | } | |
4023 | } | |
4024 | break; | |
4025 | case PR_SYSEXIT: | |
4026 | if (syscall_is_exec (pi, what)) | |
c3f6f71d | 4027 | { |
37de36c6 KB |
4028 | /* Hopefully this is our own "fork-child" execing |
4029 | the real child. Hoax this event into a trap, and | |
4030 | GDB will see the child about to execute its start | |
4031 | address. */ | |
4032 | wstat = (SIGTRAP << 8) | 0177; | |
4033 | } | |
4034 | else if (syscall_is_lwp_create (pi, what)) | |
4035 | { | |
4036 | /* | |
4037 | * This syscall is somewhat like fork/exec. | |
4038 | * We will get the event twice: once for the parent LWP, | |
4039 | * and once for the child. We should already know about | |
4040 | * the parent LWP, but the child will be new to us. So, | |
4041 | * whenever we get this event, if it represents a new | |
4042 | * thread, simply add the thread to the list. | |
4043 | */ | |
c3f6f71d | 4044 | |
37de36c6 | 4045 | /* If not in procinfo list, add it. */ |
39f77062 KB |
4046 | temp_tid = proc_get_current_thread (pi); |
4047 | if (!find_procinfo (pi->pid, temp_tid)) | |
4048 | create_procinfo (pi->pid, temp_tid); | |
37de36c6 | 4049 | |
39f77062 | 4050 | temp_ptid = MERGEPID (pi->pid, temp_tid); |
37de36c6 | 4051 | /* If not in GDB's thread list, add it. */ |
39f77062 | 4052 | if (!in_thread_list (temp_ptid)) |
c3f6f71d | 4053 | { |
39f77062 KB |
4054 | printf_filtered ("[New %s]\n", |
4055 | target_pid_to_str (temp_ptid)); | |
4056 | add_thread (temp_ptid); | |
c3f6f71d | 4057 | } |
37de36c6 KB |
4058 | /* Return to WFI, but tell it to immediately resume. */ |
4059 | status->kind = TARGET_WAITKIND_SPURIOUS; | |
39f77062 | 4060 | return inferior_ptid; |
37de36c6 KB |
4061 | } |
4062 | else if (syscall_is_lwp_exit (pi, what)) | |
4063 | { | |
4064 | printf_filtered ("[%s exited]\n", | |
4065 | target_pid_to_str (retval)); | |
4066 | delete_thread (retval); | |
4067 | status->kind = TARGET_WAITKIND_SPURIOUS; | |
4068 | return retval; | |
c3f6f71d | 4069 | } |
37de36c6 KB |
4070 | else if (0) |
4071 | { | |
4072 | /* FIXME: Do we need to handle SYS_sproc, | |
4073 | SYS_fork, or SYS_vfork here? The old procfs | |
4074 | seemed to use this event to handle threads on | |
4075 | older (non-LWP) systems, where I'm assuming | |
4076 | that threads were actually separate processes. | |
4077 | Irix, maybe? Anyway, low priority for now. */ | |
4078 | } | |
4079 | else | |
4080 | { | |
4081 | printf_filtered ("procfs: trapped on exit from "); | |
4082 | proc_prettyprint_syscall (proc_what (pi), 0); | |
4083 | printf_filtered ("\n"); | |
4084 | #ifndef PIOCSSPCACT | |
4085 | { | |
4086 | long i, nsysargs, *sysargs; | |
4087 | ||
4088 | if ((nsysargs = proc_nsysarg (pi)) > 0 && | |
4089 | (sysargs = proc_sysargs (pi)) != NULL) | |
4090 | { | |
4091 | printf_filtered ("%ld syscall arguments:\n", nsysargs); | |
4092 | for (i = 0; i < nsysargs; i++) | |
4093 | printf_filtered ("#%ld: 0x%08lx\n", | |
4094 | i, sysargs[i]); | |
4095 | } | |
4096 | } | |
c3f6f71d | 4097 | #endif |
37de36c6 | 4098 | status->kind = TARGET_WAITKIND_SPURIOUS; |
39f77062 | 4099 | return inferior_ptid; |
37de36c6 | 4100 | } |
c3f6f71d JM |
4101 | break; |
4102 | case PR_REQUESTED: | |
4103 | #if 0 /* FIXME */ | |
4104 | wstat = (SIGSTOP << 8) | 0177; | |
4105 | break; | |
4106 | #else | |
4107 | if (retry < 5) | |
4108 | { | |
4109 | printf_filtered ("Retry #%d:\n", retry); | |
4110 | pi->status_valid = 0; | |
4111 | goto wait_again; | |
4112 | } | |
4113 | else | |
4114 | { | |
4115 | /* If not in procinfo list, add it. */ | |
39f77062 KB |
4116 | temp_tid = proc_get_current_thread (pi); |
4117 | if (!find_procinfo (pi->pid, temp_tid)) | |
4118 | create_procinfo (pi->pid, temp_tid); | |
c3f6f71d JM |
4119 | |
4120 | /* If not in GDB's thread list, add it. */ | |
39f77062 KB |
4121 | temp_ptid = MERGEPID (pi->pid, temp_tid); |
4122 | if (!in_thread_list (temp_ptid)) | |
c3f6f71d | 4123 | { |
0d06e24b | 4124 | printf_filtered ("[New %s]\n", |
39f77062 KB |
4125 | target_pid_to_str (temp_ptid)); |
4126 | add_thread (temp_ptid); | |
c3f6f71d JM |
4127 | } |
4128 | ||
4129 | status->kind = TARGET_WAITKIND_STOPPED; | |
4130 | status->value.sig = 0; | |
4131 | return retval; | |
4132 | } | |
4133 | #endif | |
4134 | case PR_JOBCONTROL: | |
4135 | wstat = (what << 8) | 0177; | |
4136 | break; | |
4137 | case PR_FAULTED: | |
4138 | switch (what) { /* FIXME: FAULTED_USE_SIGINFO */ | |
4139 | #ifdef FLTWATCH | |
4140 | case FLTWATCH: | |
4141 | wstat = (SIGTRAP << 8) | 0177; | |
4142 | break; | |
4143 | #endif | |
4144 | #ifdef FLTKWATCH | |
4145 | case FLTKWATCH: | |
4146 | wstat = (SIGTRAP << 8) | 0177; | |
4147 | break; | |
4148 | #endif | |
4149 | /* FIXME: use si_signo where possible. */ | |
4150 | case FLTPRIV: | |
4151 | #if (FLTILL != FLTPRIV) /* avoid "duplicate case" error */ | |
4152 | case FLTILL: | |
4153 | #endif | |
4154 | wstat = (SIGILL << 8) | 0177; | |
4155 | break; | |
4156 | case FLTBPT: | |
4157 | #if (FLTTRACE != FLTBPT) /* avoid "duplicate case" error */ | |
4158 | case FLTTRACE: | |
4159 | #endif | |
4160 | wstat = (SIGTRAP << 8) | 0177; | |
4161 | break; | |
4162 | case FLTSTACK: | |
4163 | case FLTACCESS: | |
4164 | #if (FLTBOUNDS != FLTSTACK) /* avoid "duplicate case" error */ | |
4165 | case FLTBOUNDS: | |
4166 | #endif | |
4167 | wstat = (SIGSEGV << 8) | 0177; | |
4168 | break; | |
4169 | case FLTIOVF: | |
4170 | case FLTIZDIV: | |
4171 | #if (FLTFPE != FLTIOVF) /* avoid "duplicate case" error */ | |
4172 | case FLTFPE: | |
4173 | #endif | |
4174 | wstat = (SIGFPE << 8) | 0177; | |
4175 | break; | |
4176 | case FLTPAGE: /* Recoverable page fault */ | |
4177 | default: /* FIXME: use si_signo if possible for fault */ | |
39f77062 | 4178 | retval = pid_to_ptid (-1); |
c3f6f71d JM |
4179 | printf_filtered ("procfs:%d -- ", __LINE__); |
4180 | printf_filtered ("child stopped for unknown reason:\n"); | |
4181 | proc_prettyprint_why (why, what, 1); | |
4182 | error ("... giving up..."); | |
4183 | break; | |
4184 | } | |
4185 | break; /* case PR_FAULTED: */ | |
4186 | default: /* switch (why) unmatched */ | |
4187 | printf_filtered ("procfs:%d -- ", __LINE__); | |
4188 | printf_filtered ("child stopped for unknown reason:\n"); | |
4189 | proc_prettyprint_why (why, what, 1); | |
4190 | error ("... giving up..."); | |
4191 | break; | |
4192 | } | |
4193 | /* | |
4194 | * Got this far without error: | |
4195 | * If retval isn't in the threads database, add it. | |
4196 | */ | |
39f77062 KB |
4197 | if (PIDGET (retval) > 0 && |
4198 | !ptid_equal (retval, inferior_ptid) && | |
c3f6f71d | 4199 | !in_thread_list (retval)) |
c906108c | 4200 | { |
c3f6f71d JM |
4201 | /* |
4202 | * We have a new thread. | |
4203 | * We need to add it both to GDB's list and to our own. | |
4204 | * If we don't create a procinfo, resume may be unhappy | |
4205 | * later. | |
4206 | */ | |
4207 | printf_filtered ("[New %s]\n", target_pid_to_str (retval)); | |
4208 | add_thread (retval); | |
4209 | if (find_procinfo (PIDGET (retval), TIDGET (retval)) == NULL) | |
4210 | create_procinfo (PIDGET (retval), TIDGET (retval)); | |
4211 | ||
4212 | /* In addition, it's possible that this is the first | |
4213 | * new thread we've seen, in which case we may not | |
39f77062 | 4214 | * have created entries for inferior_ptid yet. |
c3f6f71d | 4215 | */ |
39f77062 | 4216 | if (TIDGET (inferior_ptid) != 0) |
c3f6f71d | 4217 | { |
39f77062 KB |
4218 | if (!in_thread_list (inferior_ptid)) |
4219 | add_thread (inferior_ptid); | |
4220 | if (find_procinfo (PIDGET (inferior_ptid), | |
4221 | TIDGET (inferior_ptid)) == NULL) | |
4222 | create_procinfo (PIDGET (inferior_ptid), | |
4223 | TIDGET (inferior_ptid)); | |
c3f6f71d | 4224 | } |
c906108c | 4225 | } |
c906108c | 4226 | } |
c3f6f71d | 4227 | else /* flags do not indicate STOPPED */ |
c906108c | 4228 | { |
c3f6f71d JM |
4229 | /* surely this can't happen... */ |
4230 | printf_filtered ("procfs:%d -- process not stopped.\n", | |
4231 | __LINE__); | |
4232 | proc_prettyprint_flags (flags, 1); | |
4233 | error ("procfs: ...giving up..."); | |
c906108c | 4234 | } |
c906108c | 4235 | } |
c906108c | 4236 | |
c3f6f71d JM |
4237 | if (status) |
4238 | store_waitstatus (status, wstat); | |
c906108c SS |
4239 | } |
4240 | ||
c3f6f71d JM |
4241 | return retval; |
4242 | } | |
c906108c | 4243 | |
d0849a9a KB |
4244 | /* Transfer LEN bytes between GDB address MYADDR and target address |
4245 | MEMADDR. If DOWRITE is non-zero, transfer them to the target, | |
4246 | otherwise transfer them from the target. TARGET is unused. | |
4247 | ||
4248 | The return value is 0 if an error occurred or no bytes were | |
4249 | transferred. Otherwise, it will be a positive value which | |
4250 | indicates the number of bytes transferred between gdb and the | |
4251 | target. (Note that the interface also makes provisions for | |
4252 | negative values, but this capability isn't implemented here.) */ | |
4253 | ||
c3f6f71d | 4254 | static int |
d0849a9a | 4255 | procfs_xfer_memory (CORE_ADDR memaddr, char *myaddr, int len, int dowrite, |
37de36c6 | 4256 | struct mem_attrib *attrib, struct target_ops *target) |
c3f6f71d JM |
4257 | { |
4258 | procinfo *pi; | |
4259 | int nbytes = 0; | |
c906108c | 4260 | |
c3f6f71d | 4261 | /* Find procinfo for main process */ |
39f77062 | 4262 | pi = find_procinfo_or_die (PIDGET (inferior_ptid), 0); |
c3f6f71d JM |
4263 | if (pi->as_fd == 0 && |
4264 | open_procinfo_files (pi, FD_AS) == 0) | |
c906108c | 4265 | { |
c3f6f71d JM |
4266 | proc_warn (pi, "xfer_memory, open_proc_files", __LINE__); |
4267 | return 0; | |
c906108c | 4268 | } |
c906108c | 4269 | |
c3f6f71d | 4270 | if (lseek (pi->as_fd, (off_t) memaddr, SEEK_SET) == (off_t) memaddr) |
c906108c | 4271 | { |
c3f6f71d | 4272 | if (dowrite) |
c906108c | 4273 | { |
c3f6f71d JM |
4274 | #ifdef NEW_PROC_API |
4275 | PROCFS_NOTE ("write memory: "); | |
c906108c | 4276 | #else |
c3f6f71d | 4277 | PROCFS_NOTE ("write memory: \n"); |
c906108c | 4278 | #endif |
c3f6f71d | 4279 | nbytes = write (pi->as_fd, myaddr, len); |
c906108c | 4280 | } |
c3f6f71d | 4281 | else |
c906108c | 4282 | { |
c3f6f71d JM |
4283 | PROCFS_NOTE ("read memory: \n"); |
4284 | nbytes = read (pi->as_fd, myaddr, len); | |
c906108c | 4285 | } |
c3f6f71d | 4286 | if (nbytes < 0) |
c906108c | 4287 | { |
c3f6f71d | 4288 | nbytes = 0; |
c906108c | 4289 | } |
c906108c | 4290 | } |
c3f6f71d | 4291 | return nbytes; |
c906108c SS |
4292 | } |
4293 | ||
4294 | /* | |
c3f6f71d JM |
4295 | * Function: invalidate_cache |
4296 | * | |
4297 | * Called by target_resume before making child runnable. | |
4298 | * Mark cached registers and status's invalid. | |
4299 | * If there are "dirty" caches that need to be written back | |
4300 | * to the child process, do that. | |
4301 | * | |
4302 | * File descriptors are also cached. | |
4303 | * As they are a limited resource, we cannot hold onto them indefinitely. | |
4304 | * However, as they are expensive to open, we don't want to throw them | |
4305 | * away indescriminately either. As a compromise, we will keep the | |
4306 | * file descriptors for the parent process, but discard any file | |
4307 | * descriptors we may have accumulated for the threads. | |
4308 | * | |
4309 | * Return value: | |
4310 | * As this function is called by iterate_over_threads, it always | |
4311 | * returns zero (so that iterate_over_threads will keep iterating). | |
c906108c SS |
4312 | */ |
4313 | ||
c3f6f71d JM |
4314 | |
4315 | static int | |
fba45db2 | 4316 | invalidate_cache (procinfo *parent, procinfo *pi, void *ptr) |
c906108c | 4317 | { |
c3f6f71d JM |
4318 | /* |
4319 | * About to run the child; invalidate caches and do any other cleanup. | |
4320 | */ | |
c906108c | 4321 | |
c3f6f71d JM |
4322 | #if 0 |
4323 | if (pi->gregs_dirty) | |
4324 | if (parent == NULL || | |
4325 | proc_get_current_thread (parent) != pi->tid) | |
4326 | if (!proc_set_gregs (pi)) /* flush gregs cache */ | |
4327 | proc_warn (pi, "target_resume, set_gregs", | |
4328 | __LINE__); | |
60054393 MS |
4329 | if (FP0_REGNUM >= 0) |
4330 | if (pi->fpregs_dirty) | |
4331 | if (parent == NULL || | |
4332 | proc_get_current_thread (parent) != pi->tid) | |
4333 | if (!proc_set_fpregs (pi)) /* flush fpregs cache */ | |
4334 | proc_warn (pi, "target_resume, set_fpregs", | |
4335 | __LINE__); | |
c906108c | 4336 | #endif |
c906108c | 4337 | |
c3f6f71d | 4338 | if (parent != NULL) |
c906108c | 4339 | { |
c3f6f71d JM |
4340 | /* The presence of a parent indicates that this is an LWP. |
4341 | Close any file descriptors that it might have open. | |
4342 | We don't do this to the master (parent) procinfo. */ | |
4343 | ||
4344 | close_procinfo_files (pi); | |
c906108c | 4345 | } |
c3f6f71d JM |
4346 | pi->gregs_valid = 0; |
4347 | pi->fpregs_valid = 0; | |
4348 | #if 0 | |
4349 | pi->gregs_dirty = 0; | |
4350 | pi->fpregs_dirty = 0; | |
c906108c | 4351 | #endif |
c3f6f71d JM |
4352 | pi->status_valid = 0; |
4353 | pi->threads_valid = 0; | |
c906108c | 4354 | |
c3f6f71d | 4355 | return 0; |
c906108c SS |
4356 | } |
4357 | ||
0fda6bd2 | 4358 | #if 0 |
c906108c | 4359 | /* |
c3f6f71d JM |
4360 | * Function: make_signal_thread_runnable |
4361 | * | |
4362 | * A callback function for iterate_over_threads. | |
4363 | * Find the asynchronous signal thread, and make it runnable. | |
4364 | * See if that helps matters any. | |
c906108c SS |
4365 | */ |
4366 | ||
c3f6f71d | 4367 | static int |
fba45db2 | 4368 | make_signal_thread_runnable (procinfo *process, procinfo *pi, void *ptr) |
c906108c | 4369 | { |
c3f6f71d JM |
4370 | #ifdef PR_ASLWP |
4371 | if (proc_flags (pi) & PR_ASLWP) | |
c906108c | 4372 | { |
c3f6f71d JM |
4373 | if (!proc_run_process (pi, 0, -1)) |
4374 | proc_error (pi, "make_signal_thread_runnable", __LINE__); | |
4375 | return 1; | |
c906108c | 4376 | } |
c906108c | 4377 | #endif |
c3f6f71d | 4378 | return 0; |
c906108c | 4379 | } |
0fda6bd2 | 4380 | #endif |
c906108c SS |
4381 | |
4382 | /* | |
c3f6f71d JM |
4383 | * Function: target_resume |
4384 | * | |
4385 | * Make the child process runnable. Normally we will then call | |
4386 | * procfs_wait and wait for it to stop again (unles gdb is async). | |
4387 | * | |
4388 | * Arguments: | |
4389 | * step: if true, then arrange for the child to stop again | |
4390 | * after executing a single instruction. | |
4391 | * signo: if zero, then cancel any pending signal. | |
4392 | * If non-zero, then arrange for the indicated signal | |
4393 | * to be delivered to the child when it runs. | |
4394 | * pid: if -1, then allow any child thread to run. | |
4395 | * if non-zero, then allow only the indicated thread to run. | |
4396 | ******* (not implemented yet) | |
c906108c SS |
4397 | */ |
4398 | ||
4399 | static void | |
39f77062 | 4400 | procfs_resume (ptid_t ptid, int step, enum target_signal signo) |
c906108c | 4401 | { |
c3f6f71d JM |
4402 | procinfo *pi, *thread; |
4403 | int native_signo; | |
4404 | ||
4405 | /* 2.1: | |
4406 | prrun.prflags |= PRSVADDR; | |
4407 | prrun.pr_vaddr = $PC; set resume address | |
4408 | prrun.prflags |= PRSTRACE; trace signals in pr_trace (all) | |
4409 | prrun.prflags |= PRSFAULT; trace faults in pr_fault (all but PAGE) | |
4410 | prrun.prflags |= PRCFAULT; clear current fault. | |
4411 | ||
4412 | PRSTRACE and PRSFAULT can be done by other means | |
4413 | (proc_trace_signals, proc_trace_faults) | |
4414 | PRSVADDR is unnecessary. | |
4415 | PRCFAULT may be replaced by a PIOCCFAULT call (proc_clear_current_fault) | |
4416 | This basically leaves PRSTEP and PRCSIG. | |
4417 | PRCSIG is like PIOCSSIG (proc_clear_current_signal). | |
4418 | So basically PR_STEP is the sole argument that must be passed | |
4419 | to proc_run_process (for use in the prrun struct by ioctl). */ | |
4420 | ||
4421 | /* Find procinfo for main process */ | |
39f77062 | 4422 | pi = find_procinfo_or_die (PIDGET (inferior_ptid), 0); |
c3f6f71d JM |
4423 | |
4424 | /* First cut: ignore pid argument */ | |
4425 | errno = 0; | |
c906108c | 4426 | |
c3f6f71d JM |
4427 | /* Convert signal to host numbering. */ |
4428 | if (signo == 0 || | |
0fda6bd2 | 4429 | (signo == TARGET_SIGNAL_STOP && pi->ignore_next_sigstop)) |
c3f6f71d JM |
4430 | native_signo = 0; |
4431 | else | |
4432 | native_signo = target_signal_to_host (signo); | |
c906108c | 4433 | |
c3f6f71d | 4434 | pi->ignore_next_sigstop = 0; |
c906108c | 4435 | |
c3f6f71d JM |
4436 | /* Running the process voids all cached registers and status. */ |
4437 | /* Void the threads' caches first */ | |
4438 | proc_iterate_over_threads (pi, invalidate_cache, NULL); | |
4439 | /* Void the process procinfo's caches. */ | |
4440 | invalidate_cache (NULL, pi, NULL); | |
c906108c | 4441 | |
39f77062 | 4442 | if (PIDGET (ptid) != -1) |
c906108c | 4443 | { |
c3f6f71d | 4444 | /* Resume a specific thread, presumably suppressing the others. */ |
39f77062 | 4445 | thread = find_procinfo (PIDGET (ptid), TIDGET (ptid)); |
7de45904 | 4446 | if (thread != NULL) |
c906108c | 4447 | { |
c3f6f71d JM |
4448 | if (thread->tid != 0) |
4449 | { | |
4450 | /* We're to resume a specific thread, and not the others. | |
4451 | * Set the child process's PR_ASYNC flag. | |
4452 | */ | |
4453 | #ifdef PR_ASYNC | |
4454 | if (!proc_set_async (pi)) | |
4455 | proc_error (pi, "target_resume, set_async", __LINE__); | |
4456 | #endif | |
4457 | #if 0 | |
4458 | proc_iterate_over_threads (pi, | |
4459 | make_signal_thread_runnable, | |
4460 | NULL); | |
4461 | #endif | |
4462 | pi = thread; /* substitute the thread's procinfo for run */ | |
4463 | } | |
c906108c SS |
4464 | } |
4465 | } | |
c906108c | 4466 | |
c3f6f71d | 4467 | if (!proc_run_process (pi, step, native_signo)) |
c906108c | 4468 | { |
c3f6f71d JM |
4469 | if (errno == EBUSY) |
4470 | warning ("resume: target already running. Pretend to resume, and hope for the best!\n"); | |
4471 | else | |
4472 | proc_error (pi, "target_resume", __LINE__); | |
c906108c | 4473 | } |
c3f6f71d | 4474 | } |
c906108c | 4475 | |
c3f6f71d JM |
4476 | /* |
4477 | * Function: register_gdb_signals | |
4478 | * | |
4479 | * Traverse the list of signals that GDB knows about | |
4480 | * (see "handle" command), and arrange for the target | |
4481 | * to be stopped or not, according to these settings. | |
4482 | * | |
4483 | * Returns non-zero for success, zero for failure. | |
4484 | */ | |
c906108c | 4485 | |
c3f6f71d | 4486 | static int |
37de36c6 | 4487 | register_gdb_signals (procinfo *pi, gdb_sigset_t *signals) |
c3f6f71d JM |
4488 | { |
4489 | int signo; | |
c906108c | 4490 | |
c3f6f71d JM |
4491 | for (signo = 0; signo < NSIG; signo ++) |
4492 | if (signal_stop_state (target_signal_from_host (signo)) == 0 && | |
4493 | signal_print_state (target_signal_from_host (signo)) == 0 && | |
4494 | signal_pass_state (target_signal_from_host (signo)) == 1) | |
4495 | prdelset (signals, signo); | |
4496 | else | |
4497 | praddset (signals, signo); | |
c906108c | 4498 | |
c3f6f71d | 4499 | return proc_set_traced_signals (pi, signals); |
c906108c SS |
4500 | } |
4501 | ||
4502 | /* | |
c3f6f71d JM |
4503 | * Function: target_notice_signals |
4504 | * | |
4505 | * Set up to trace signals in the child process. | |
4506 | */ | |
c906108c | 4507 | |
c3f6f71d | 4508 | static void |
39f77062 | 4509 | procfs_notice_signals (ptid_t ptid) |
c3f6f71d | 4510 | { |
37de36c6 | 4511 | gdb_sigset_t signals; |
39f77062 | 4512 | procinfo *pi = find_procinfo_or_die (PIDGET (ptid), 0); |
c906108c | 4513 | |
c3f6f71d JM |
4514 | if (proc_get_traced_signals (pi, &signals) && |
4515 | register_gdb_signals (pi, &signals)) | |
4516 | return; | |
4517 | else | |
4518 | proc_error (pi, "notice_signals", __LINE__); | |
4519 | } | |
c906108c | 4520 | |
c3f6f71d JM |
4521 | /* |
4522 | * Function: target_files_info | |
4523 | * | |
4524 | * Print status information about the child process. | |
4525 | */ | |
c906108c | 4526 | |
c3f6f71d | 4527 | static void |
fba45db2 | 4528 | procfs_files_info (struct target_ops *ignore) |
c3f6f71d JM |
4529 | { |
4530 | printf_filtered ("\tUsing the running image of %s %s via /proc.\n", | |
4531 | attach_flag? "attached": "child", | |
39f77062 | 4532 | target_pid_to_str (inferior_ptid)); |
c3f6f71d | 4533 | } |
c906108c | 4534 | |
c3f6f71d JM |
4535 | /* |
4536 | * Function: target_open | |
4537 | * | |
4538 | * A dummy: you don't open procfs. | |
c906108c SS |
4539 | */ |
4540 | ||
4541 | static void | |
fba45db2 | 4542 | procfs_open (char *args, int from_tty) |
c906108c | 4543 | { |
c3f6f71d JM |
4544 | error ("Use the \"run\" command to start a Unix child process."); |
4545 | } | |
c906108c | 4546 | |
c3f6f71d JM |
4547 | /* |
4548 | * Function: target_can_run | |
4549 | * | |
4550 | * This tells GDB that this target vector can be invoked | |
4551 | * for "run" or "attach". | |
4552 | */ | |
c906108c | 4553 | |
c3f6f71d JM |
4554 | int procfs_suppress_run = 0; /* Non-zero if procfs should pretend not to |
4555 | be a runnable target. Used by targets | |
4556 | that can sit atop procfs, such as solaris | |
4557 | thread support. */ | |
c906108c | 4558 | |
c906108c | 4559 | |
c3f6f71d | 4560 | static int |
fba45db2 | 4561 | procfs_can_run (void) |
c3f6f71d JM |
4562 | { |
4563 | /* This variable is controlled by modules that sit atop procfs that | |
4564 | may layer their own process structure atop that provided here. | |
4565 | sol-thread.c does this because of the Solaris two-level thread | |
4566 | model. */ | |
4567 | ||
4568 | /* NOTE: possibly obsolete -- use the thread_stratum approach instead. */ | |
c906108c | 4569 | |
c3f6f71d JM |
4570 | return !procfs_suppress_run; |
4571 | } | |
c906108c | 4572 | |
c3f6f71d JM |
4573 | /* |
4574 | * Function: target_stop | |
4575 | * | |
4576 | * Stop the child process asynchronously, as when the | |
4577 | * gdb user types control-c or presses a "stop" button. | |
4578 | * | |
4579 | * Works by sending kill(SIGINT) to the child's process group. | |
4580 | */ | |
c906108c | 4581 | |
c3f6f71d | 4582 | static void |
fba45db2 | 4583 | procfs_stop (void) |
c3f6f71d JM |
4584 | { |
4585 | extern pid_t inferior_process_group; | |
c906108c | 4586 | |
c3f6f71d | 4587 | kill (-inferior_process_group, SIGINT); |
c906108c SS |
4588 | } |
4589 | ||
c906108c | 4590 | /* |
c3f6f71d JM |
4591 | * Function: unconditionally_kill_inferior |
4592 | * | |
4593 | * Make it die. Wait for it to die. Clean up after it. | |
4594 | * Note: this should only be applied to the real process, | |
4595 | * not to an LWP, because of the check for parent-process. | |
4596 | * If we need this to work for an LWP, it needs some more logic. | |
4597 | */ | |
c906108c | 4598 | |
c3f6f71d | 4599 | static void |
fba45db2 | 4600 | unconditionally_kill_inferior (procinfo *pi) |
c3f6f71d JM |
4601 | { |
4602 | int parent_pid; | |
c906108c | 4603 | |
c3f6f71d JM |
4604 | parent_pid = proc_parent_pid (pi); |
4605 | #ifdef PROCFS_NEED_CLEAR_CURSIG_FOR_KILL | |
4606 | /* FIXME: use access functions */ | |
4607 | /* Alpha OSF/1-3.x procfs needs a clear of the current signal | |
4608 | before the PIOCKILL, otherwise it might generate a corrupted core | |
4609 | file for the inferior. */ | |
4610 | if (ioctl (pi->ctl_fd, PIOCSSIG, NULL) < 0) | |
4611 | { | |
4612 | printf_filtered ("unconditionally_kill: SSIG failed!\n"); | |
4613 | } | |
4614 | #endif | |
4615 | #ifdef PROCFS_NEED_PIOCSSIG_FOR_KILL | |
4616 | /* Alpha OSF/1-2.x procfs needs a PIOCSSIG call with a SIGKILL signal | |
4617 | to kill the inferior, otherwise it might remain stopped with a | |
4618 | pending SIGKILL. | |
4619 | We do not check the result of the PIOCSSIG, the inferior might have | |
4620 | died already. */ | |
4621 | { | |
37de36c6 | 4622 | gdb_siginfo_t newsiginfo; |
c906108c | 4623 | |
c3f6f71d JM |
4624 | memset ((char *) &newsiginfo, 0, sizeof (newsiginfo)); |
4625 | newsiginfo.si_signo = SIGKILL; | |
4626 | newsiginfo.si_code = 0; | |
4627 | newsiginfo.si_errno = 0; | |
4628 | newsiginfo.si_pid = getpid (); | |
4629 | newsiginfo.si_uid = getuid (); | |
4630 | /* FIXME: use proc_set_current_signal */ | |
4631 | ioctl (pi->ctl_fd, PIOCSSIG, &newsiginfo); | |
4632 | } | |
4633 | #else /* PROCFS_NEED_PIOCSSIG_FOR_KILL */ | |
4634 | if (!proc_kill (pi, SIGKILL)) | |
103b3ef5 | 4635 | proc_error (pi, "unconditionally_kill, proc_kill", __LINE__); |
c3f6f71d JM |
4636 | #endif /* PROCFS_NEED_PIOCSSIG_FOR_KILL */ |
4637 | destroy_procinfo (pi); | |
c906108c | 4638 | |
c3f6f71d JM |
4639 | /* If pi is GDB's child, wait for it to die. */ |
4640 | if (parent_pid == getpid ()) | |
4641 | /* FIXME: should we use waitpid to make sure we get the right event? | |
4642 | Should we check the returned event? */ | |
4643 | { | |
0d06e24b | 4644 | #if 0 |
c3f6f71d | 4645 | int status, ret; |
c906108c | 4646 | |
c3f6f71d JM |
4647 | ret = waitpid (pi->pid, &status, 0); |
4648 | #else | |
4649 | wait (NULL); | |
4650 | #endif | |
4651 | } | |
4652 | } | |
c906108c | 4653 | |
c3f6f71d JM |
4654 | /* |
4655 | * Function: target_kill_inferior | |
4656 | * | |
4657 | * We're done debugging it, and we want it to go away. | |
4658 | * Then we want GDB to forget all about it. | |
c906108c SS |
4659 | */ |
4660 | ||
c3f6f71d | 4661 | static void |
fba45db2 | 4662 | procfs_kill_inferior (void) |
c906108c | 4663 | { |
39f77062 | 4664 | if (!ptid_equal (inferior_ptid, null_ptid)) /* ? */ |
c3f6f71d JM |
4665 | { |
4666 | /* Find procinfo for main process */ | |
39f77062 | 4667 | procinfo *pi = find_procinfo (PIDGET (inferior_ptid), 0); |
c906108c | 4668 | |
c3f6f71d JM |
4669 | if (pi) |
4670 | unconditionally_kill_inferior (pi); | |
4671 | target_mourn_inferior (); | |
c906108c | 4672 | } |
c3f6f71d JM |
4673 | } |
4674 | ||
4675 | /* | |
4676 | * Function: target_mourn_inferior | |
4677 | * | |
4678 | * Forget we ever debugged this thing! | |
4679 | */ | |
c906108c | 4680 | |
c3f6f71d | 4681 | static void |
fba45db2 | 4682 | procfs_mourn_inferior (void) |
c3f6f71d JM |
4683 | { |
4684 | procinfo *pi; | |
c906108c | 4685 | |
39f77062 | 4686 | if (!ptid_equal (inferior_ptid, null_ptid)) |
c3f6f71d JM |
4687 | { |
4688 | /* Find procinfo for main process */ | |
39f77062 | 4689 | pi = find_procinfo (PIDGET (inferior_ptid), 0); |
c3f6f71d JM |
4690 | if (pi) |
4691 | destroy_procinfo (pi); | |
c906108c | 4692 | } |
c3f6f71d JM |
4693 | unpush_target (&procfs_ops); |
4694 | generic_mourn_inferior (); | |
4695 | } | |
c906108c | 4696 | |
c3f6f71d JM |
4697 | /* |
4698 | * Function: init_inferior | |
4699 | * | |
4700 | * When GDB forks to create a runnable inferior process, | |
4701 | * this function is called on the parent side of the fork. | |
4702 | * It's job is to do whatever is necessary to make the child | |
4703 | * ready to be debugged, and then wait for the child to synchronize. | |
4704 | */ | |
c906108c | 4705 | |
c3f6f71d | 4706 | static void |
fba45db2 | 4707 | procfs_init_inferior (int pid) |
c3f6f71d JM |
4708 | { |
4709 | procinfo *pi; | |
37de36c6 | 4710 | gdb_sigset_t signals; |
c3f6f71d | 4711 | int fail; |
c906108c | 4712 | |
c3f6f71d JM |
4713 | /* This routine called on the parent side (GDB side) |
4714 | after GDB forks the inferior. */ | |
c906108c | 4715 | |
c3f6f71d | 4716 | push_target (&procfs_ops); |
c906108c | 4717 | |
c3f6f71d JM |
4718 | if ((pi = create_procinfo (pid, 0)) == NULL) |
4719 | perror ("procfs: out of memory in 'init_inferior'"); | |
4720 | ||
4721 | if (!open_procinfo_files (pi, FD_CTL)) | |
4722 | proc_error (pi, "init_inferior, open_proc_files", __LINE__); | |
4723 | ||
4724 | /* | |
4725 | xmalloc // done | |
4726 | open_procinfo_files // done | |
4727 | link list // done | |
4728 | prfillset (trace) | |
4729 | procfs_notice_signals | |
4730 | prfillset (fault) | |
4731 | prdelset (FLTPAGE) | |
4732 | PIOCWSTOP | |
4733 | PIOCSFAULT | |
4734 | */ | |
4735 | ||
4736 | /* If not stopped yet, wait for it to stop. */ | |
4737 | if (!(proc_flags (pi) & PR_STOPPED) && | |
4738 | !(proc_wait_for_stop (pi))) | |
4739 | dead_procinfo (pi, "init_inferior: wait_for_stop failed", KILL); | |
4740 | ||
4741 | /* Save some of the /proc state to be restored if we detach. */ | |
4742 | /* FIXME: Why? In case another debugger was debugging it? | |
4743 | We're it's parent, for Ghu's sake! */ | |
4744 | if (!proc_get_traced_signals (pi, &pi->saved_sigset)) | |
4745 | proc_error (pi, "init_inferior, get_traced_signals", __LINE__); | |
4746 | if (!proc_get_held_signals (pi, &pi->saved_sighold)) | |
4747 | proc_error (pi, "init_inferior, get_held_signals", __LINE__); | |
4748 | if (!proc_get_traced_faults (pi, &pi->saved_fltset)) | |
4749 | proc_error (pi, "init_inferior, get_traced_faults", __LINE__); | |
37de36c6 | 4750 | if (!proc_get_traced_sysentry (pi, pi->saved_entryset)) |
c3f6f71d | 4751 | proc_error (pi, "init_inferior, get_traced_sysentry", __LINE__); |
37de36c6 | 4752 | if (!proc_get_traced_sysexit (pi, pi->saved_exitset)) |
c3f6f71d JM |
4753 | proc_error (pi, "init_inferior, get_traced_sysexit", __LINE__); |
4754 | ||
4755 | /* Register to trace selected signals in the child. */ | |
4756 | prfillset (&signals); | |
4757 | if (!register_gdb_signals (pi, &signals)) | |
4758 | proc_error (pi, "init_inferior, register_signals", __LINE__); | |
4759 | ||
4760 | if ((fail = procfs_debug_inferior (pi)) != 0) | |
4761 | proc_error (pi, "init_inferior (procfs_debug_inferior)", fail); | |
4762 | ||
0d06e24b JM |
4763 | /* FIXME: logically, we should really be turning OFF run-on-last-close, |
4764 | and possibly even turning ON kill-on-last-close at this point. But | |
4765 | I can't make that change without careful testing which I don't have | |
4766 | time to do right now... */ | |
c3f6f71d JM |
4767 | /* Turn on run-on-last-close flag so that the child |
4768 | will die if GDB goes away for some reason. */ | |
4769 | if (!proc_set_run_on_last_close (pi)) | |
4770 | proc_error (pi, "init_inferior, set_RLC", __LINE__); | |
4771 | ||
4772 | /* The 'process ID' we return to GDB is composed of | |
4773 | the actual process ID plus the lwp ID. */ | |
39f77062 | 4774 | inferior_ptid = MERGEPID (pi->pid, proc_get_current_thread (pi)); |
c906108c | 4775 | |
c3f6f71d JM |
4776 | #ifdef START_INFERIOR_TRAPS_EXPECTED |
4777 | startup_inferior (START_INFERIOR_TRAPS_EXPECTED); | |
4778 | #else | |
4779 | /* One trap to exec the shell, one to exec the program being debugged. */ | |
4780 | startup_inferior (2); | |
0d06e24b | 4781 | #endif /* START_INFERIOR_TRAPS_EXPECTED */ |
c3f6f71d | 4782 | } |
c906108c | 4783 | |
c3f6f71d JM |
4784 | /* |
4785 | * Function: set_exec_trap | |
4786 | * | |
4787 | * When GDB forks to create a new process, this function is called | |
4788 | * on the child side of the fork before GDB exec's the user program. | |
4789 | * Its job is to make the child minimally debuggable, so that the | |
4790 | * parent GDB process can connect to the child and take over. | |
4791 | * This function should do only the minimum to make that possible, | |
4792 | * and to synchronize with the parent process. The parent process | |
4793 | * should take care of the details. | |
4794 | */ | |
4795 | ||
4796 | static void | |
fba45db2 | 4797 | procfs_set_exec_trap (void) |
c3f6f71d JM |
4798 | { |
4799 | /* This routine called on the child side (inferior side) | |
4800 | after GDB forks the inferior. It must use only local variables, | |
4801 | because it may be sharing data space with its parent. */ | |
c906108c | 4802 | |
c3f6f71d | 4803 | procinfo *pi; |
37de36c6 | 4804 | sysset_t *exitset; |
c906108c | 4805 | |
c3f6f71d JM |
4806 | if ((pi = create_procinfo (getpid (), 0)) == NULL) |
4807 | perror_with_name ("procfs: create_procinfo failed in child."); | |
c906108c | 4808 | |
c3f6f71d JM |
4809 | if (open_procinfo_files (pi, FD_CTL) == 0) |
4810 | { | |
4811 | proc_warn (pi, "set_exec_trap, open_proc_files", __LINE__); | |
4812 | gdb_flush (gdb_stderr); | |
4813 | /* no need to call "dead_procinfo", because we're going to exit. */ | |
4814 | _exit (127); | |
4815 | } | |
c906108c | 4816 | |
c3f6f71d JM |
4817 | #ifdef PRFS_STOPEXEC /* defined on OSF */ |
4818 | /* OSF method for tracing exec syscalls. Quoting: | |
4819 | Under Alpha OSF/1 we have to use a PIOCSSPCACT ioctl to trace | |
4820 | exits from exec system calls because of the user level loader. */ | |
4821 | /* FIXME: make nice and maybe move into an access function. */ | |
4822 | { | |
4823 | int prfs_flags; | |
c906108c | 4824 | |
c3f6f71d JM |
4825 | if (ioctl (pi->ctl_fd, PIOCGSPCACT, &prfs_flags) < 0) |
4826 | { | |
4827 | proc_warn (pi, "set_exec_trap (PIOCGSPCACT)", __LINE__); | |
4828 | gdb_flush (gdb_stderr); | |
4829 | _exit (127); | |
4830 | } | |
4831 | prfs_flags |= PRFS_STOPEXEC; | |
c906108c | 4832 | |
c3f6f71d JM |
4833 | if (ioctl (pi->ctl_fd, PIOCSSPCACT, &prfs_flags) < 0) |
4834 | { | |
4835 | proc_warn (pi, "set_exec_trap (PIOCSSPCACT)", __LINE__); | |
4836 | gdb_flush (gdb_stderr); | |
4837 | _exit (127); | |
4838 | } | |
4839 | } | |
4840 | #else /* not PRFS_STOPEXEC */ | |
4841 | /* Everyone else's (except OSF) method for tracing exec syscalls */ | |
4842 | /* GW: Rationale... | |
4843 | Not all systems with /proc have all the exec* syscalls with the same | |
4844 | names. On the SGI, for example, there is no SYS_exec, but there | |
4845 | *is* a SYS_execv. So, we try to account for that. */ | |
c906108c | 4846 | |
37de36c6 KB |
4847 | exitset = sysset_t_alloc (pi); |
4848 | gdb_premptysysset (exitset); | |
c3f6f71d | 4849 | #ifdef SYS_exec |
37de36c6 | 4850 | gdb_praddsysset (exitset, SYS_exec); |
c3f6f71d JM |
4851 | #endif |
4852 | #ifdef SYS_execve | |
37de36c6 | 4853 | gdb_praddsysset (exitset, SYS_execve); |
c3f6f71d JM |
4854 | #endif |
4855 | #ifdef SYS_execv | |
37de36c6 | 4856 | gdb_praddsysset (exitset, SYS_execv); |
c906108c | 4857 | #endif |
37de36c6 KB |
4858 | #ifdef DYNAMIC_SYSCALLS |
4859 | { | |
4860 | int callnum = find_syscall (pi, "execve"); | |
4861 | ||
4862 | if (callnum >= 0) | |
4863 | gdb_praddsysset (exitset, callnum); | |
c906108c | 4864 | |
37de36c6 KB |
4865 | callnum = find_syscall (pi, "ra_execve"); |
4866 | if (callnum >= 0) | |
4867 | gdb_praddsysset (exitset, callnum); | |
4868 | } | |
4869 | #endif /* DYNAMIC_SYSCALLS */ | |
4870 | ||
4871 | if (!proc_set_traced_sysexit (pi, exitset)) | |
c906108c | 4872 | { |
c3f6f71d JM |
4873 | proc_warn (pi, "set_exec_trap, set_traced_sysexit", __LINE__); |
4874 | gdb_flush (gdb_stderr); | |
4875 | _exit (127); | |
c906108c | 4876 | } |
c3f6f71d JM |
4877 | #endif /* PRFS_STOPEXEC */ |
4878 | ||
4879 | /* FIXME: should this be done in the parent instead? */ | |
4880 | /* Turn off inherit on fork flag so that all grand-children | |
4881 | of gdb start with tracing flags cleared. */ | |
4882 | if (!proc_unset_inherit_on_fork (pi)) | |
4883 | proc_warn (pi, "set_exec_trap, unset_inherit", __LINE__); | |
4884 | ||
4885 | /* Turn off run on last close flag, so that the child process | |
4886 | cannot run away just because we close our handle on it. | |
4887 | We want it to wait for the parent to attach. */ | |
4888 | if (!proc_unset_run_on_last_close (pi)) | |
4889 | proc_warn (pi, "set_exec_trap, unset_RLC", __LINE__); | |
4890 | ||
4891 | /* FIXME: No need to destroy the procinfo -- | |
4892 | we have our own address space, and we're about to do an exec! */ | |
4893 | /*destroy_procinfo (pi);*/ | |
c906108c | 4894 | } |
c906108c | 4895 | |
c3f6f71d JM |
4896 | /* |
4897 | * Function: create_inferior | |
4898 | * | |
4899 | * This function is called BEFORE gdb forks the inferior process. | |
4900 | * Its only real responsibility is to set things up for the fork, | |
4901 | * and tell GDB which two functions to call after the fork (one | |
4902 | * for the parent, and one for the child). | |
4903 | * | |
4904 | * This function does a complicated search for a unix shell program, | |
4905 | * which it then uses to parse arguments and environment variables | |
4906 | * to be sent to the child. I wonder whether this code could not | |
4907 | * be abstracted out and shared with other unix targets such as | |
4908 | * infptrace? | |
4909 | */ | |
c906108c SS |
4910 | |
4911 | static void | |
fba45db2 | 4912 | procfs_create_inferior (char *exec_file, char *allargs, char **env) |
c906108c SS |
4913 | { |
4914 | char *shell_file = getenv ("SHELL"); | |
4915 | char *tryname; | |
4916 | if (shell_file != NULL && strchr (shell_file, '/') == NULL) | |
4917 | { | |
4918 | ||
4919 | /* We will be looking down the PATH to find shell_file. If we | |
c3f6f71d JM |
4920 | just do this the normal way (via execlp, which operates by |
4921 | attempting an exec for each element of the PATH until it | |
4922 | finds one which succeeds), then there will be an exec for | |
4923 | each failed attempt, each of which will cause a PR_SYSEXIT | |
4924 | stop, and we won't know how to distinguish the PR_SYSEXIT's | |
4925 | for these failed execs with the ones for successful execs | |
4926 | (whether the exec has succeeded is stored at that time in the | |
4927 | carry bit or some such architecture-specific and | |
4928 | non-ABI-specified place). | |
4929 | ||
4930 | So I can't think of anything better than to search the PATH | |
4931 | now. This has several disadvantages: (1) There is a race | |
4932 | condition; if we find a file now and it is deleted before we | |
4933 | exec it, we lose, even if the deletion leaves a valid file | |
4934 | further down in the PATH, (2) there is no way to know exactly | |
4935 | what an executable (in the sense of "capable of being | |
4936 | exec'd") file is. Using access() loses because it may lose | |
4937 | if the caller is the superuser; failing to use it loses if | |
4938 | there are ACLs or some such. */ | |
c906108c SS |
4939 | |
4940 | char *p; | |
4941 | char *p1; | |
4942 | /* FIXME-maybe: might want "set path" command so user can change what | |
c3f6f71d | 4943 | path is used from within GDB. */ |
c906108c SS |
4944 | char *path = getenv ("PATH"); |
4945 | int len; | |
4946 | struct stat statbuf; | |
4947 | ||
4948 | if (path == NULL) | |
4949 | path = "/bin:/usr/bin"; | |
4950 | ||
4951 | tryname = alloca (strlen (path) + strlen (shell_file) + 2); | |
c3f6f71d | 4952 | for (p = path; p != NULL; p = p1 ? p1 + 1: NULL) |
c906108c SS |
4953 | { |
4954 | p1 = strchr (p, ':'); | |
4955 | if (p1 != NULL) | |
4956 | len = p1 - p; | |
4957 | else | |
4958 | len = strlen (p); | |
4959 | strncpy (tryname, p, len); | |
4960 | tryname[len] = '\0'; | |
4961 | strcat (tryname, "/"); | |
4962 | strcat (tryname, shell_file); | |
4963 | if (access (tryname, X_OK) < 0) | |
4964 | continue; | |
4965 | if (stat (tryname, &statbuf) < 0) | |
4966 | continue; | |
4967 | if (!S_ISREG (statbuf.st_mode)) | |
4968 | /* We certainly need to reject directories. I'm not quite | |
4969 | as sure about FIFOs, sockets, etc., but I kind of doubt | |
4970 | that people want to exec() these things. */ | |
4971 | continue; | |
4972 | break; | |
4973 | } | |
4974 | if (p == NULL) | |
4975 | /* Not found. This must be an error rather than merely passing | |
4976 | the file to execlp(), because execlp() would try all the | |
4977 | exec()s, causing GDB to get confused. */ | |
c3f6f71d JM |
4978 | error ("procfs:%d -- Can't find shell %s in PATH", |
4979 | __LINE__, shell_file); | |
c906108c SS |
4980 | |
4981 | shell_file = tryname; | |
4982 | } | |
4983 | ||
c3f6f71d JM |
4984 | fork_inferior (exec_file, allargs, env, procfs_set_exec_trap, |
4985 | procfs_init_inferior, NULL, shell_file); | |
c906108c SS |
4986 | |
4987 | /* We are at the first instruction we care about. */ | |
4988 | /* Pedal to the metal... */ | |
4989 | ||
2acceee2 | 4990 | proceed ((CORE_ADDR) -1, TARGET_SIGNAL_0, 0); |
c906108c SS |
4991 | } |
4992 | ||
c3f6f71d JM |
4993 | /* |
4994 | * Function: notice_thread | |
4995 | * | |
4996 | * Callback for find_new_threads. | |
4997 | * Calls "add_thread". | |
4998 | */ | |
c906108c | 4999 | |
c3f6f71d | 5000 | static int |
fba45db2 | 5001 | procfs_notice_thread (procinfo *pi, procinfo *thread, void *ptr) |
c906108c | 5002 | { |
39f77062 | 5003 | ptid_t gdb_threadid = MERGEPID (pi->pid, thread->tid); |
c906108c | 5004 | |
c3f6f71d JM |
5005 | if (!in_thread_list (gdb_threadid)) |
5006 | add_thread (gdb_threadid); | |
c906108c | 5007 | |
c3f6f71d JM |
5008 | return 0; |
5009 | } | |
5010 | ||
5011 | /* | |
5012 | * Function: target_find_new_threads | |
5013 | * | |
5014 | * Query all the threads that the target knows about, | |
5015 | * and give them back to GDB to add to its list. | |
5016 | */ | |
5017 | ||
5018 | void | |
fba45db2 | 5019 | procfs_find_new_threads (void) |
c3f6f71d JM |
5020 | { |
5021 | procinfo *pi; | |
5022 | ||
5023 | /* Find procinfo for main process */ | |
39f77062 | 5024 | pi = find_procinfo_or_die (PIDGET (inferior_ptid), 0); |
c3f6f71d JM |
5025 | proc_update_threads (pi); |
5026 | proc_iterate_over_threads (pi, procfs_notice_thread, NULL); | |
c906108c SS |
5027 | } |
5028 | ||
c3f6f71d JM |
5029 | /* |
5030 | * Function: target_thread_alive | |
5031 | * | |
5032 | * Return true if the thread is still 'alive'. | |
5033 | * | |
5034 | * This guy doesn't really seem to be doing his job. | |
5035 | * Got to investigate how to tell when a thread is really gone. | |
5036 | */ | |
c906108c | 5037 | |
c906108c | 5038 | static int |
39f77062 | 5039 | procfs_thread_alive (ptid_t ptid) |
c906108c | 5040 | { |
c3f6f71d JM |
5041 | int proc, thread; |
5042 | procinfo *pi; | |
c906108c | 5043 | |
39f77062 KB |
5044 | proc = PIDGET (ptid); |
5045 | thread = TIDGET (ptid); | |
c3f6f71d JM |
5046 | /* If I don't know it, it ain't alive! */ |
5047 | if ((pi = find_procinfo (proc, thread)) == NULL) | |
5048 | return 0; | |
5049 | ||
5050 | /* If I can't get its status, it ain't alive! | |
5051 | What's more, I need to forget about it! */ | |
5052 | if (!proc_get_status (pi)) | |
5053 | { | |
5054 | destroy_procinfo (pi); | |
5055 | return 0; | |
5056 | } | |
5057 | /* I couldn't have got its status if it weren't alive, so it's alive. */ | |
5058 | return 1; | |
c906108c | 5059 | } |
c3f6f71d JM |
5060 | |
5061 | /* | |
5062 | * Function: target_pid_to_str | |
5063 | * | |
5064 | * Return a string to be used to identify the thread in | |
5065 | * the "info threads" display. | |
5066 | */ | |
5067 | ||
5068 | char * | |
39f77062 | 5069 | procfs_pid_to_str (ptid_t ptid) |
c3f6f71d JM |
5070 | { |
5071 | static char buf[80]; | |
5072 | int proc, thread; | |
5073 | procinfo *pi; | |
5074 | ||
39f77062 KB |
5075 | proc = PIDGET (ptid); |
5076 | thread = TIDGET (ptid); | |
c3f6f71d JM |
5077 | pi = find_procinfo (proc, thread); |
5078 | ||
5079 | if (thread == 0) | |
5080 | sprintf (buf, "Process %d", proc); | |
5081 | else | |
5082 | sprintf (buf, "LWP %d", thread); | |
5083 | return &buf[0]; | |
5084 | } | |
5085 | ||
5086 | /* | |
5087 | * Function: procfs_set_watchpoint | |
5088 | * Insert a watchpoint | |
5089 | */ | |
5090 | ||
5091 | int | |
39f77062 KB |
5092 | procfs_set_watchpoint (ptid_t ptid, CORE_ADDR addr, int len, int rwflag, |
5093 | int after) | |
c906108c | 5094 | { |
c3f6f71d | 5095 | #ifndef UNIXWARE |
37de36c6 | 5096 | #ifndef AIX5 |
c3f6f71d JM |
5097 | int pflags = 0; |
5098 | procinfo *pi; | |
5099 | ||
39f77062 KB |
5100 | pi = find_procinfo_or_die (PIDGET (ptid) == -1 ? |
5101 | PIDGET (inferior_ptid) : PIDGET (ptid), 0); | |
c3f6f71d JM |
5102 | |
5103 | /* Translate from GDB's flags to /proc's */ | |
5104 | if (len > 0) /* len == 0 means delete watchpoint */ | |
c906108c | 5105 | { |
c3f6f71d JM |
5106 | switch (rwflag) { /* FIXME: need an enum! */ |
5107 | case hw_write: /* default watchpoint (write) */ | |
5108 | pflags = WRITE_WATCHFLAG; | |
5109 | break; | |
5110 | case hw_read: /* read watchpoint */ | |
5111 | pflags = READ_WATCHFLAG; | |
5112 | break; | |
5113 | case hw_access: /* access watchpoint */ | |
5114 | pflags = READ_WATCHFLAG | WRITE_WATCHFLAG; | |
5115 | break; | |
5116 | case hw_execute: /* execution HW breakpoint */ | |
5117 | pflags = EXEC_WATCHFLAG; | |
5118 | break; | |
5119 | default: /* Something weird. Return error. */ | |
c906108c | 5120 | return -1; |
c3f6f71d JM |
5121 | } |
5122 | if (after) /* Stop after r/w access is completed. */ | |
5123 | pflags |= AFTER_WATCHFLAG; | |
5124 | } | |
5125 | ||
5126 | if (!proc_set_watchpoint (pi, addr, len, pflags)) | |
5127 | { | |
5128 | if (errno == E2BIG) /* Typical error for no resources */ | |
5129 | return -1; /* fail */ | |
5130 | /* GDB may try to remove the same watchpoint twice. | |
5131 | If a remove request returns no match, don't error. */ | |
c906108c | 5132 | if (errno == ESRCH && len == 0) |
c3f6f71d JM |
5133 | return 0; /* ignore */ |
5134 | proc_error (pi, "set_watchpoint", __LINE__); | |
c906108c | 5135 | } |
37de36c6 KB |
5136 | #endif /* AIX5 */ |
5137 | #endif /* UNIXWARE */ | |
c906108c SS |
5138 | return 0; |
5139 | } | |
5140 | ||
c3f6f71d JM |
5141 | /* |
5142 | * Function: stopped_by_watchpoint | |
5143 | * | |
5144 | * Returns non-zero if process is stopped on a hardware watchpoint fault, | |
5145 | * else returns zero. | |
5146 | */ | |
5147 | ||
c906108c | 5148 | int |
39f77062 | 5149 | procfs_stopped_by_watchpoint (ptid_t ptid) |
c906108c | 5150 | { |
c3f6f71d | 5151 | procinfo *pi; |
c906108c | 5152 | |
39f77062 KB |
5153 | pi = find_procinfo_or_die (PIDGET (ptid) == -1 ? |
5154 | PIDGET (inferior_ptid) : PIDGET (ptid), 0); | |
aaeb7efa MS |
5155 | |
5156 | if (!pi) /* If no process, then not stopped by watchpoint! */ | |
5157 | return 0; | |
5158 | ||
c3f6f71d | 5159 | if (proc_flags (pi) & (PR_STOPPED | PR_ISTOP)) |
c906108c | 5160 | { |
c3f6f71d JM |
5161 | if (proc_why (pi) == PR_FAULTED) |
5162 | { | |
c906108c | 5163 | #ifdef FLTWATCH |
c3f6f71d JM |
5164 | if (proc_what (pi) == FLTWATCH) |
5165 | return 1; | |
c906108c SS |
5166 | #endif |
5167 | #ifdef FLTKWATCH | |
c3f6f71d JM |
5168 | if (proc_what (pi) == FLTKWATCH) |
5169 | return 1; | |
c906108c | 5170 | #endif |
c3f6f71d | 5171 | } |
c906108c SS |
5172 | } |
5173 | return 0; | |
5174 | } | |
c906108c | 5175 | |
c3f6f71d JM |
5176 | #ifdef TM_I386SOL2_H |
5177 | /* | |
5178 | * Function: procfs_find_LDT_entry | |
5179 | * | |
5180 | * Input: | |
39f77062 | 5181 | * ptid_t ptid; // The GDB-style pid-plus-LWP. |
c3f6f71d JM |
5182 | * |
5183 | * Return: | |
5184 | * pointer to the corresponding LDT entry. | |
5185 | */ | |
c906108c | 5186 | |
c3f6f71d | 5187 | struct ssd * |
39f77062 | 5188 | procfs_find_LDT_entry (ptid_t ptid) |
c906108c | 5189 | { |
c3f6f71d JM |
5190 | gdb_gregset_t *gregs; |
5191 | int key; | |
5192 | procinfo *pi; | |
c906108c | 5193 | |
c3f6f71d | 5194 | /* Find procinfo for the lwp. */ |
39f77062 | 5195 | if ((pi = find_procinfo (PIDGET (ptid), TIDGET (ptid))) == NULL) |
c906108c | 5196 | { |
39f77062 KB |
5197 | warning ("procfs_find_LDT_entry: could not find procinfo for %d:%d.", |
5198 | PIDGET (ptid), TIDGET (ptid)); | |
c3f6f71d | 5199 | return NULL; |
c906108c | 5200 | } |
c3f6f71d JM |
5201 | /* get its general registers. */ |
5202 | if ((gregs = proc_get_gregs (pi)) == NULL) | |
5203 | { | |
39f77062 KB |
5204 | warning ("procfs_find_LDT_entry: could not read gregs for %d:%d.", |
5205 | PIDGET (ptid), TIDGET (ptid)); | |
c3f6f71d JM |
5206 | return NULL; |
5207 | } | |
5208 | /* Now extract the GS register's lower 16 bits. */ | |
5209 | key = (*gregs)[GS] & 0xffff; | |
5210 | ||
5211 | /* Find the matching entry and return it. */ | |
5212 | return proc_get_LDT_entry (pi, key); | |
c906108c | 5213 | } |
c3f6f71d | 5214 | #endif /* TM_I386SOL2_H */ |
c906108c | 5215 | |
831e682e MS |
5216 | /* |
5217 | * Memory Mappings Functions: | |
5218 | */ | |
5219 | ||
5220 | /* | |
5221 | * Function: iterate_over_mappings | |
5222 | * | |
5223 | * Call a callback function once for each mapping, passing it the mapping, | |
5224 | * an optional secondary callback function, and some optional opaque data. | |
5225 | * Quit and return the first non-zero value returned from the callback. | |
5226 | * | |
5227 | * Arguments: | |
5228 | * pi -- procinfo struct for the process to be mapped. | |
5229 | * func -- callback function to be called by this iterator. | |
5230 | * data -- optional opaque data to be passed to the callback function. | |
5231 | * child_func -- optional secondary function pointer to be passed | |
5232 | * to the child function. | |
5233 | * | |
5234 | * Return: First non-zero return value from the callback function, | |
5235 | * or zero. | |
5236 | */ | |
5237 | ||
5238 | static int | |
5239 | iterate_over_mappings (procinfo *pi, int (*child_func) (), void *data, | |
5240 | int (*func) (struct prmap *map, | |
5241 | int (*child_func) (), | |
5242 | void *data)) | |
5243 | { | |
5244 | char pathname[MAX_PROC_NAME_SIZE]; | |
5245 | struct prmap *prmaps; | |
5246 | struct prmap *prmap; | |
5247 | int funcstat; | |
5248 | int map_fd; | |
5249 | int nmap; | |
5250 | #ifdef NEW_PROC_API | |
5251 | struct stat sbuf; | |
5252 | #endif | |
5253 | ||
5254 | /* Get the number of mappings, allocate space, | |
5255 | and read the mappings into prmaps. */ | |
5256 | #ifdef NEW_PROC_API | |
5257 | /* Open map fd. */ | |
5258 | sprintf (pathname, "/proc/%d/map", pi->pid); | |
5259 | if ((map_fd = open (pathname, O_RDONLY)) < 0) | |
5260 | proc_error (pi, "iterate_over_mappings (open)", __LINE__); | |
5261 | ||
5262 | /* Make sure it gets closed again. */ | |
5263 | make_cleanup_close (map_fd); | |
5264 | ||
5265 | /* Use stat to determine the file size, and compute | |
5266 | the number of prmap_t objects it contains. */ | |
5267 | if (fstat (map_fd, &sbuf) != 0) | |
5268 | proc_error (pi, "iterate_over_mappings (fstat)", __LINE__); | |
5269 | ||
5270 | nmap = sbuf.st_size / sizeof (prmap_t); | |
5271 | prmaps = (struct prmap *) alloca ((nmap + 1) * sizeof (*prmaps)); | |
5272 | if (read (map_fd, (char *) prmaps, nmap * sizeof (*prmaps)) | |
5273 | != (nmap * sizeof (*prmaps))) | |
5274 | proc_error (pi, "iterate_over_mappings (read)", __LINE__); | |
5275 | #else | |
5276 | /* Use ioctl command PIOCNMAP to get number of mappings. */ | |
5277 | if (ioctl (pi->ctl_fd, PIOCNMAP, &nmap) != 0) | |
5278 | proc_error (pi, "iterate_over_mappings (PIOCNMAP)", __LINE__); | |
5279 | ||
5280 | prmaps = (struct prmap *) alloca ((nmap + 1) * sizeof (*prmaps)); | |
5281 | if (ioctl (pi->ctl_fd, PIOCMAP, prmaps) != 0) | |
5282 | proc_error (pi, "iterate_over_mappings (PIOCMAP)", __LINE__); | |
5283 | #endif | |
5284 | ||
5285 | for (prmap = prmaps; nmap > 0; prmap++, nmap--) | |
5286 | if ((funcstat = (*func) (prmap, child_func, data)) != 0) | |
5287 | return funcstat; | |
5288 | ||
5289 | return 0; | |
5290 | } | |
5291 | ||
5292 | /* | |
5293 | * Function: solib_mappings_callback | |
5294 | * | |
5295 | * Calls the supplied callback function once for each mapped address | |
5296 | * space in the process. The callback function receives an open | |
5297 | * file descriptor for the file corresponding to that mapped | |
5298 | * address space (if there is one), and the base address of the | |
5299 | * mapped space. Quit when the callback function returns a | |
5300 | * nonzero value, or at teh end of the mappings. | |
5301 | * | |
5302 | * Returns: the first non-zero return value of the callback function, | |
5303 | * or zero. | |
5304 | */ | |
5305 | ||
5306 | int solib_mappings_callback (struct prmap *map, | |
5307 | int (*func) (int, CORE_ADDR), | |
5308 | void *data) | |
5309 | { | |
5310 | procinfo *pi = data; | |
5311 | int fd; | |
5312 | ||
5313 | #ifdef NEW_PROC_API | |
5314 | char name[MAX_PROC_NAME_SIZE + sizeof (map->pr_mapname)]; | |
5315 | ||
5316 | if (map->pr_vaddr == 0 && map->pr_size == 0) | |
5317 | return -1; /* sanity */ | |
5318 | ||
5319 | if (map->pr_mapname[0] == 0) | |
5320 | { | |
5321 | fd = -1; /* no map file */ | |
5322 | } | |
5323 | else | |
5324 | { | |
5325 | sprintf (name, "/proc/%d/object/%s", pi->pid, map->pr_mapname); | |
5326 | /* Note: caller's responsibility to close this fd! */ | |
5327 | fd = open_with_retry (name, O_RDONLY); | |
5328 | /* Note: we don't test the above call for failure; | |
5329 | we just pass the FD on as given. Sometimes there is | |
5330 | no file, so the open may return failure, but that's | |
5331 | not a problem. */ | |
5332 | } | |
5333 | #else | |
5334 | fd = ioctl (pi->ctl_fd, PIOCOPENM, &map->pr_vaddr); | |
5335 | /* Note: we don't test the above call for failure; | |
5336 | we just pass the FD on as given. Sometimes there is | |
5337 | no file, so the ioctl may return failure, but that's | |
5338 | not a problem. */ | |
5339 | #endif | |
5340 | return (*func) (fd, (CORE_ADDR) map->pr_vaddr); | |
5341 | } | |
5342 | ||
5343 | /* | |
5344 | * Function: proc_iterate_over_mappings | |
5345 | * | |
5346 | * Uses the unified "iterate_over_mappings" function | |
5347 | * to implement the exported interface to solib-svr4.c. | |
5348 | * | |
5349 | * Given a pointer to a function, call that function once for every | |
5350 | * mapped address space in the process. The callback function | |
5351 | * receives an open file descriptor for the file corresponding to | |
5352 | * that mapped address space (if there is one), and the base address | |
5353 | * of the mapped space. Quit when the callback function returns a | |
5354 | * nonzero value, or at teh end of the mappings. | |
5355 | * | |
5356 | * Returns: the first non-zero return value of the callback function, | |
5357 | * or zero. | |
5358 | */ | |
5359 | ||
5360 | int | |
5361 | proc_iterate_over_mappings (int (*func) (int, CORE_ADDR)) | |
5362 | { | |
5363 | procinfo *pi = find_procinfo_or_die (PIDGET (inferior_ptid), 0); | |
5364 | ||
5365 | return iterate_over_mappings (pi, func, pi, solib_mappings_callback); | |
5366 | } | |
5367 | ||
be4d1333 MS |
5368 | /* |
5369 | * Function: find_memory_regions_callback | |
5370 | * | |
5371 | * Implements the to_find_memory_regions method. | |
5372 | * Calls an external function for each memory region. | |
5373 | * External function will have the signiture: | |
5374 | * | |
5375 | * int callback (CORE_ADDR vaddr, | |
5376 | * unsigned long size, | |
5377 | * int read, int write, int execute, | |
5378 | * void *data); | |
5379 | * | |
5380 | * Returns the integer value returned by the callback. | |
5381 | */ | |
5382 | ||
5383 | static int | |
5384 | find_memory_regions_callback (struct prmap *map, | |
5385 | int (*func) (CORE_ADDR, | |
5386 | unsigned long, | |
5387 | int, int, int, | |
5388 | void *), | |
5389 | void *data) | |
5390 | { | |
6dbdc4a3 | 5391 | return (*func) ((CORE_ADDR) map->pr_vaddr, |
be4d1333 MS |
5392 | map->pr_size, |
5393 | (map->pr_mflags & MA_READ) != 0, | |
5394 | (map->pr_mflags & MA_WRITE) != 0, | |
5395 | (map->pr_mflags & MA_EXEC) != 0, | |
5396 | data); | |
5397 | } | |
5398 | ||
5399 | /* | |
5400 | * Function: proc_find_memory_regions | |
5401 | * | |
5402 | * External interface. Calls a callback function once for each | |
5403 | * mapped memory region in the child process, passing as arguments | |
5404 | * CORE_ADDR virtual_address, | |
5405 | * unsigned long size, | |
5406 | * int read, TRUE if region is readable by the child | |
5407 | * int write, TRUE if region is writable by the child | |
5408 | * int execute TRUE if region is executable by the child. | |
5409 | * | |
5410 | * Stops iterating and returns the first non-zero value | |
5411 | * returned by the callback. | |
5412 | */ | |
5413 | ||
5414 | static int | |
5415 | proc_find_memory_regions (int (*func) (CORE_ADDR, | |
5416 | unsigned long, | |
5417 | int, int, int, | |
5418 | void *), | |
5419 | void *data) | |
5420 | { | |
5421 | procinfo *pi = find_procinfo_or_die (PIDGET (inferior_ptid), 0); | |
5422 | ||
5423 | return iterate_over_mappings (pi, func, data, | |
5424 | find_memory_regions_callback); | |
5425 | } | |
5426 | ||
388faa48 MS |
5427 | /* |
5428 | * Function: mappingflags | |
5429 | * | |
5430 | * Returns an ascii representation of a memory mapping's flags. | |
5431 | */ | |
c3f6f71d | 5432 | |
388faa48 MS |
5433 | static char * |
5434 | mappingflags (flags) | |
5435 | long flags; | |
5436 | { | |
5437 | static char asciiflags[8]; | |
5438 | ||
5439 | strcpy (asciiflags, "-------"); | |
5440 | #if defined (MA_PHYS) | |
5441 | if (flags & MA_PHYS) | |
5442 | asciiflags[0] = 'd'; | |
5443 | #endif | |
5444 | if (flags & MA_STACK) | |
5445 | asciiflags[1] = 's'; | |
5446 | if (flags & MA_BREAK) | |
5447 | asciiflags[2] = 'b'; | |
5448 | if (flags & MA_SHARED) | |
5449 | asciiflags[3] = 's'; | |
5450 | if (flags & MA_READ) | |
5451 | asciiflags[4] = 'r'; | |
5452 | if (flags & MA_WRITE) | |
5453 | asciiflags[5] = 'w'; | |
5454 | if (flags & MA_EXEC) | |
5455 | asciiflags[6] = 'x'; | |
5456 | return (asciiflags); | |
5457 | } | |
5458 | ||
831e682e MS |
5459 | /* |
5460 | * Function: info_mappings_callback | |
5461 | * | |
5462 | * Callback function, does the actual work for 'info proc mappings'. | |
5463 | */ | |
5464 | ||
5465 | /* ARGSUSED */ | |
5466 | static int | |
5467 | info_mappings_callback (struct prmap *map, int (*ignore) (), void *unused) | |
5468 | { | |
5469 | char *data_fmt_string; | |
5470 | ||
5471 | if (TARGET_ADDR_BIT == 32) | |
5472 | data_fmt_string = "\t%#10lx %#10lx %#10x %#10x %7s\n"; | |
5473 | else | |
5474 | data_fmt_string = " %#18lx %#18lx %#10x %#10x %7s\n"; | |
5475 | ||
5476 | printf_filtered (data_fmt_string, | |
5477 | (unsigned long) map->pr_vaddr, | |
5478 | (unsigned long) map->pr_vaddr + map->pr_size - 1, | |
5479 | map->pr_size, | |
5480 | #ifdef PCAGENT /* Horrible hack: only defined on Solaris 2.6+ */ | |
5481 | (unsigned int) map->pr_offset, | |
5482 | #else | |
5483 | map->pr_off, | |
5484 | #endif | |
5485 | mappingflags (map->pr_mflags)); | |
5486 | ||
5487 | return 0; | |
5488 | } | |
5489 | ||
388faa48 MS |
5490 | /* |
5491 | * Function: info_proc_mappings | |
5492 | * | |
5493 | * Implement the "info proc mappings" subcommand. | |
5494 | */ | |
5495 | ||
5496 | static void | |
5497 | info_proc_mappings (procinfo *pi, int summary) | |
5498 | { | |
831e682e | 5499 | char *header_fmt_string; |
388faa48 MS |
5500 | |
5501 | if (TARGET_PTR_BIT == 32) | |
831e682e | 5502 | header_fmt_string = "\t%10s %10s %10s %10s %7s\n"; |
388faa48 | 5503 | else |
831e682e | 5504 | header_fmt_string = " %18s %18s %10s %10s %7s\n"; |
388faa48 MS |
5505 | |
5506 | if (summary) | |
5507 | return; /* No output for summary mode. */ | |
5508 | ||
388faa48 MS |
5509 | printf_filtered ("Mapped address spaces:\n\n"); |
5510 | printf_filtered (header_fmt_string, | |
5511 | "Start Addr", | |
5512 | " End Addr", | |
5513 | " Size", | |
5514 | " Offset", | |
5515 | "Flags"); | |
5516 | ||
831e682e | 5517 | iterate_over_mappings (pi, NULL, NULL, info_mappings_callback); |
388faa48 MS |
5518 | printf_filtered ("\n"); |
5519 | } | |
5520 | ||
5521 | /* | |
5522 | * Function: info_proc_cmd | |
5523 | * | |
5524 | * Implement the "info proc" command. | |
5525 | */ | |
c3f6f71d JM |
5526 | |
5527 | static void | |
fba45db2 | 5528 | info_proc_cmd (char *args, int from_tty) |
c906108c | 5529 | { |
c3f6f71d | 5530 | struct cleanup *old_chain; |
388faa48 MS |
5531 | procinfo *process = NULL; |
5532 | procinfo *thread = NULL; | |
5533 | char **argv = NULL; | |
5534 | char *tmp = NULL; | |
5535 | int pid = 0; | |
5536 | int tid = 0; | |
5537 | int mappings = 0; | |
c906108c | 5538 | |
c3f6f71d JM |
5539 | old_chain = make_cleanup (null_cleanup, 0); |
5540 | if (args) | |
0fda6bd2 JM |
5541 | { |
5542 | if ((argv = buildargv (args)) == NULL) | |
5543 | nomem (0); | |
5544 | else | |
004527cb | 5545 | make_cleanup_freeargv (argv); |
0fda6bd2 | 5546 | } |
c3f6f71d JM |
5547 | while (argv != NULL && *argv != NULL) |
5548 | { | |
5549 | if (isdigit (argv[0][0])) | |
5550 | { | |
5551 | pid = strtoul (argv[0], &tmp, 10); | |
5552 | if (*tmp == '/') | |
5553 | tid = strtoul (++tmp, NULL, 10); | |
5554 | } | |
5555 | else if (argv[0][0] == '/') | |
5556 | { | |
5557 | tid = strtoul (argv[0] + 1, NULL, 10); | |
5558 | } | |
388faa48 MS |
5559 | else if (strncmp (argv[0], "mappings", strlen (argv[0])) == 0) |
5560 | { | |
5561 | mappings = 1; | |
5562 | } | |
c3f6f71d JM |
5563 | else |
5564 | { | |
5565 | /* [...] */ | |
5566 | } | |
5567 | argv++; | |
5568 | } | |
5569 | if (pid == 0) | |
39f77062 | 5570 | pid = PIDGET (inferior_ptid); |
c3f6f71d JM |
5571 | if (pid == 0) |
5572 | error ("No current process: you must name one."); | |
5573 | else | |
c906108c | 5574 | { |
c3f6f71d JM |
5575 | /* Have pid, will travel. |
5576 | First see if it's a process we're already debugging. */ | |
5577 | process = find_procinfo (pid, 0); | |
5578 | if (process == NULL) | |
5579 | { | |
5580 | /* No. So open a procinfo for it, but | |
5581 | remember to close it again when finished. */ | |
5582 | process = create_procinfo (pid, 0); | |
004527cb | 5583 | make_cleanup (do_destroy_procinfo_cleanup, process); |
c3f6f71d JM |
5584 | if (!open_procinfo_files (process, FD_CTL)) |
5585 | proc_error (process, "info proc, open_procinfo_files", __LINE__); | |
5586 | } | |
c906108c | 5587 | } |
c3f6f71d JM |
5588 | if (tid != 0) |
5589 | thread = create_procinfo (pid, tid); | |
5590 | ||
5591 | if (process) | |
5592 | { | |
5593 | printf_filtered ("process %d flags:\n", process->pid); | |
5594 | proc_prettyprint_flags (proc_flags (process), 1); | |
5595 | if (proc_flags (process) & (PR_STOPPED | PR_ISTOP)) | |
5596 | proc_prettyprint_why (proc_why (process), proc_what (process), 1); | |
5597 | if (proc_get_nthreads (process) > 1) | |
5598 | printf_filtered ("Process has %d threads.\n", | |
5599 | proc_get_nthreads (process)); | |
5600 | } | |
5601 | if (thread) | |
5602 | { | |
5603 | printf_filtered ("thread %d flags:\n", thread->tid); | |
5604 | proc_prettyprint_flags (proc_flags (thread), 1); | |
5605 | if (proc_flags (thread) & (PR_STOPPED | PR_ISTOP)) | |
5606 | proc_prettyprint_why (proc_why (thread), proc_what (thread), 1); | |
5607 | } | |
5608 | ||
388faa48 MS |
5609 | if (mappings) |
5610 | { | |
5611 | info_proc_mappings (process, 0); | |
5612 | } | |
5613 | ||
c3f6f71d | 5614 | do_cleanups (old_chain); |
c906108c SS |
5615 | } |
5616 | ||
c3f6f71d | 5617 | static void |
fba45db2 | 5618 | proc_trace_syscalls (char *args, int from_tty, int entry_or_exit, int mode) |
c906108c | 5619 | { |
c3f6f71d JM |
5620 | procinfo *pi; |
5621 | sysset_t *sysset; | |
5622 | int syscallnum = 0; | |
c906108c | 5623 | |
39f77062 | 5624 | if (PIDGET (inferior_ptid) <= 0) |
c3f6f71d | 5625 | error ("you must be debugging a process to use this command."); |
c906108c | 5626 | |
c3f6f71d JM |
5627 | if (args == NULL || args[0] == 0) |
5628 | error_no_arg ("system call to trace"); | |
5629 | ||
39f77062 | 5630 | pi = find_procinfo_or_die (PIDGET (inferior_ptid), 0); |
c3f6f71d JM |
5631 | if (isdigit (args[0])) |
5632 | { | |
5633 | syscallnum = atoi (args); | |
5634 | if (entry_or_exit == PR_SYSENTRY) | |
5635 | sysset = proc_get_traced_sysentry (pi, NULL); | |
5636 | else | |
5637 | sysset = proc_get_traced_sysexit (pi, NULL); | |
c906108c | 5638 | |
c3f6f71d JM |
5639 | if (sysset == NULL) |
5640 | proc_error (pi, "proc-trace, get_traced_sysset", __LINE__); | |
c906108c | 5641 | |
c3f6f71d | 5642 | if (mode == FLAG_SET) |
37de36c6 | 5643 | gdb_praddsysset (sysset, syscallnum); |
c3f6f71d | 5644 | else |
37de36c6 | 5645 | gdb_prdelsysset (sysset, syscallnum); |
c906108c | 5646 | |
c3f6f71d JM |
5647 | if (entry_or_exit == PR_SYSENTRY) |
5648 | { | |
5649 | if (!proc_set_traced_sysentry (pi, sysset)) | |
5650 | proc_error (pi, "proc-trace, set_traced_sysentry", __LINE__); | |
5651 | } | |
5652 | else | |
5653 | { | |
5654 | if (!proc_set_traced_sysexit (pi, sysset)) | |
5655 | proc_error (pi, "proc-trace, set_traced_sysexit", __LINE__); | |
5656 | } | |
5657 | } | |
5658 | } | |
5659 | ||
5660 | static void | |
fba45db2 | 5661 | proc_trace_sysentry_cmd (char *args, int from_tty) |
c906108c | 5662 | { |
c3f6f71d JM |
5663 | proc_trace_syscalls (args, from_tty, PR_SYSENTRY, FLAG_SET); |
5664 | } | |
c906108c | 5665 | |
c3f6f71d | 5666 | static void |
fba45db2 | 5667 | proc_trace_sysexit_cmd (char *args, int from_tty) |
c3f6f71d JM |
5668 | { |
5669 | proc_trace_syscalls (args, from_tty, PR_SYSEXIT, FLAG_SET); | |
c906108c | 5670 | } |
c906108c | 5671 | |
c3f6f71d | 5672 | static void |
fba45db2 | 5673 | proc_untrace_sysentry_cmd (char *args, int from_tty) |
c3f6f71d JM |
5674 | { |
5675 | proc_trace_syscalls (args, from_tty, PR_SYSENTRY, FLAG_RESET); | |
5676 | } | |
5677 | ||
5678 | static void | |
fba45db2 | 5679 | proc_untrace_sysexit_cmd (char *args, int from_tty) |
c906108c | 5680 | { |
c3f6f71d JM |
5681 | proc_trace_syscalls (args, from_tty, PR_SYSEXIT, FLAG_RESET); |
5682 | } | |
c906108c | 5683 | |
c906108c | 5684 | |
c906108c | 5685 | void |
fba45db2 | 5686 | _initialize_procfs (void) |
c906108c | 5687 | { |
c906108c SS |
5688 | init_procfs_ops (); |
5689 | add_target (&procfs_ops); | |
c3f6f71d | 5690 | add_info ("proc", info_proc_cmd, |
388faa48 MS |
5691 | "Show /proc process information about any running process.\n\ |
5692 | Specify process id, or use the program being debugged by default.\n\ | |
5693 | Specify keyword 'mappings' for detailed info on memory mappings."); | |
c3f6f71d JM |
5694 | add_com ("proc-trace-entry", no_class, proc_trace_sysentry_cmd, |
5695 | "Give a trace of entries into the syscall."); | |
5696 | add_com ("proc-trace-exit", no_class, proc_trace_sysexit_cmd, | |
5697 | "Give a trace of exits from the syscall."); | |
5698 | add_com ("proc-untrace-entry", no_class, proc_untrace_sysentry_cmd, | |
5699 | "Cancel a trace of entries into the syscall."); | |
5700 | add_com ("proc-untrace-exit", no_class, proc_untrace_sysexit_cmd, | |
5701 | "Cancel a trace of exits from the syscall."); | |
c3f6f71d JM |
5702 | } |
5703 | ||
5704 | /* =================== END, GDB "MODULE" =================== */ | |
5705 | ||
5706 | ||
5707 | ||
65554fef | 5708 | /* miscellaneous stubs: */ |
c3f6f71d JM |
5709 | /* The following satisfy a few random symbols mostly created by */ |
5710 | /* the solaris threads implementation, which I will chase down */ | |
5711 | /* later. */ | |
5712 | ||
5713 | /* | |
5714 | * Return a pid for which we guarantee | |
5715 | * we will be able to find a 'live' procinfo. | |
5716 | */ | |
5717 | ||
39f77062 | 5718 | ptid_t |
fba45db2 | 5719 | procfs_first_available (void) |
c3f6f71d | 5720 | { |
39f77062 | 5721 | return pid_to_ptid (procinfo_list ? procinfo_list->pid : -1); |
c3f6f71d | 5722 | } |
be4d1333 MS |
5723 | |
5724 | /* =================== GCORE .NOTE "MODULE" =================== */ | |
65554fef MS |
5725 | #if defined (UNIXWARE) || defined (PIOCOPENLWP) || defined (PCAGENT) |
5726 | /* gcore only implemented on solaris and unixware (so far) */ | |
be4d1333 MS |
5727 | |
5728 | static char * | |
5729 | procfs_do_thread_registers (bfd *obfd, ptid_t ptid, | |
5730 | char *note_data, int *note_size) | |
5731 | { | |
5732 | gdb_gregset_t gregs; | |
5733 | gdb_fpregset_t fpregs; | |
5734 | unsigned long merged_pid; | |
5735 | ||
5736 | merged_pid = TIDGET (ptid) << 16 | PIDGET (ptid); | |
5737 | ||
5738 | fill_gregset (&gregs, -1); | |
65554fef MS |
5739 | #if defined (UNIXWARE) |
5740 | note_data = (char *) elfcore_write_lwpstatus (obfd, | |
5741 | note_data, | |
5742 | note_size, | |
5743 | merged_pid, | |
5744 | stop_signal, | |
5745 | &gregs); | |
5746 | #else | |
be4d1333 | 5747 | note_data = (char *) elfcore_write_prstatus (obfd, |
65554fef MS |
5748 | note_data, |
5749 | note_size, | |
be4d1333 MS |
5750 | merged_pid, |
5751 | stop_signal, | |
65554fef MS |
5752 | &gregs); |
5753 | #endif | |
be4d1333 MS |
5754 | fill_fpregset (&fpregs, -1); |
5755 | note_data = (char *) elfcore_write_prfpreg (obfd, | |
5756 | note_data, | |
5757 | note_size, | |
5758 | &fpregs, | |
5759 | sizeof (fpregs)); | |
5760 | return note_data; | |
5761 | } | |
5762 | ||
5763 | struct procfs_corefile_thread_data { | |
5764 | bfd *obfd; | |
5765 | char *note_data; | |
5766 | int *note_size; | |
5767 | }; | |
5768 | ||
5769 | static int | |
65554fef | 5770 | procfs_corefile_thread_callback (procinfo *pi, procinfo *thread, void *data) |
be4d1333 MS |
5771 | { |
5772 | struct procfs_corefile_thread_data *args = data; | |
be4d1333 | 5773 | |
65554fef | 5774 | if (pi != NULL && thread->tid != 0) |
be4d1333 MS |
5775 | { |
5776 | ptid_t saved_ptid = inferior_ptid; | |
65554fef MS |
5777 | inferior_ptid = MERGEPID (pi->pid, thread->tid); |
5778 | args->note_data = procfs_do_thread_registers (args->obfd, inferior_ptid, | |
be4d1333 MS |
5779 | args->note_data, |
5780 | args->note_size); | |
5781 | inferior_ptid = saved_ptid; | |
5782 | } | |
5783 | return 0; | |
5784 | } | |
5785 | ||
5786 | static char * | |
5787 | procfs_make_note_section (bfd *obfd, int *note_size) | |
5788 | { | |
5789 | struct cleanup *old_chain; | |
5790 | gdb_gregset_t gregs; | |
5791 | gdb_fpregset_t fpregs; | |
5792 | char fname[16] = {'\0'}; | |
5793 | char psargs[80] = {'\0'}; | |
5794 | procinfo *pi = find_procinfo_or_die (PIDGET (inferior_ptid), 0); | |
5795 | char *note_data = NULL; | |
6dbdc4a3 | 5796 | char *inf_args; |
be4d1333 MS |
5797 | struct procfs_corefile_thread_data thread_args; |
5798 | ||
5799 | if (get_exec_file (0)) | |
5800 | { | |
5801 | strncpy (fname, strrchr (get_exec_file (0), '/') + 1, sizeof (fname)); | |
5802 | strncpy (psargs, get_exec_file (0), | |
5803 | sizeof (psargs)); | |
6dbdc4a3 MS |
5804 | |
5805 | inf_args = get_inferior_args (); | |
5806 | if (inf_args && *inf_args && | |
5807 | strlen (inf_args) < ((int) sizeof (psargs) - (int) strlen (psargs))) | |
be4d1333 MS |
5808 | { |
5809 | strncat (psargs, " ", | |
5810 | sizeof (psargs) - strlen (psargs)); | |
6dbdc4a3 | 5811 | strncat (psargs, inf_args, |
be4d1333 MS |
5812 | sizeof (psargs) - strlen (psargs)); |
5813 | } | |
5814 | } | |
5815 | ||
5816 | note_data = (char *) elfcore_write_prpsinfo (obfd, | |
5817 | note_data, | |
5818 | note_size, | |
5819 | fname, | |
5820 | psargs); | |
5821 | ||
65554fef MS |
5822 | #ifdef UNIXWARE |
5823 | fill_gregset (&gregs, -1); | |
5824 | note_data = elfcore_write_pstatus (obfd, note_data, note_size, | |
5825 | PIDGET (inferior_ptid), | |
5826 | stop_signal, &gregs); | |
5827 | #endif | |
5828 | ||
be4d1333 MS |
5829 | thread_args.obfd = obfd; |
5830 | thread_args.note_data = note_data; | |
5831 | thread_args.note_size = note_size; | |
65554fef MS |
5832 | proc_iterate_over_threads (pi, procfs_corefile_thread_callback, &thread_args); |
5833 | ||
be4d1333 MS |
5834 | if (thread_args.note_data == note_data) |
5835 | { | |
5836 | /* iterate_over_threads didn't come up with any threads; | |
5837 | just use inferior_ptid. */ | |
5838 | note_data = procfs_do_thread_registers (obfd, inferior_ptid, | |
5839 | note_data, note_size); | |
5840 | } | |
5841 | else | |
5842 | { | |
5843 | note_data = thread_args.note_data; | |
5844 | } | |
5845 | ||
5846 | make_cleanup (xfree, note_data); | |
5847 | return note_data; | |
5848 | } | |
65554fef MS |
5849 | #else /* !(Solaris or Unixware) */ |
5850 | static char * | |
5851 | procfs_make_note_section (bfd *obfd, int *note_size) | |
5852 | { | |
5853 | error ("gcore not implemented for this host."); | |
5854 | return NULL; /* lint */ | |
5855 | } | |
5856 | #endif /* Solaris or Unixware */ | |
be4d1333 | 5857 | /* =================== END GCORE .NOTE "MODULE" =================== */ |