Commit | Line | Data |
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c906108c | 1 | /* Machine independent support for SVR4 /proc (process file system) for GDB. |
2555fe1a | 2 | |
6aba47ca DJ |
3 | Copyright (C) 1999, 2000, 2001, 2002, 2003, 2006, 2007 |
4 | Free Software Foundation, Inc. | |
2555fe1a | 5 | |
c3f6f71d JM |
6 | Written by Michael Snyder at Cygnus Solutions. |
7 | Based on work by Fred Fish, Stu Grossman, Geoff Noer, and others. | |
c906108c | 8 | |
c3f6f71d | 9 | This file is part of GDB. |
c906108c | 10 | |
c3f6f71d JM |
11 | This program is free software; you can redistribute it and/or modify |
12 | it under the terms of the GNU General Public License as published by | |
13 | the Free Software Foundation; either version 2 of the License, or | |
14 | (at your option) any later version. | |
c906108c | 15 | |
c3f6f71d JM |
16 | This program is distributed in the hope that it will be useful, |
17 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
18 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
19 | GNU General Public License for more details. | |
c906108c | 20 | |
c3f6f71d | 21 | You should have received a copy of the GNU General Public License |
19958708 | 22 | along with this program; if not, write to the Free Software Foundation, |
197e01b6 EZ |
23 | Inc., 51 Franklin Street, Fifth Floor, |
24 | Boston, MA 02110-1301, USA. */ | |
c906108c | 25 | |
c3f6f71d JM |
26 | #include "defs.h" |
27 | #include "inferior.h" | |
28 | #include "target.h" | |
29 | #include "gdbcore.h" | |
65554fef | 30 | #include "elf-bfd.h" /* for elfcore_write_* */ |
c3f6f71d | 31 | #include "gdbcmd.h" |
0fda6bd2 | 32 | #include "gdbthread.h" |
7f7fe91e | 33 | #include "regcache.h" |
c906108c | 34 | |
c3f6f71d JM |
35 | #if defined (NEW_PROC_API) |
36 | #define _STRUCTURED_PROC 1 /* Should be done by configure script. */ | |
37 | #endif | |
c906108c | 38 | |
c3f6f71d | 39 | #include <sys/procfs.h> |
37de36c6 | 40 | #ifdef HAVE_SYS_FAULT_H |
c3f6f71d | 41 | #include <sys/fault.h> |
37de36c6 KB |
42 | #endif |
43 | #ifdef HAVE_SYS_SYSCALL_H | |
c3f6f71d | 44 | #include <sys/syscall.h> |
37de36c6 | 45 | #endif |
c3f6f71d | 46 | #include <sys/errno.h> |
2555fe1a | 47 | #include "gdb_wait.h" |
0fda6bd2 JM |
48 | #include <signal.h> |
49 | #include <ctype.h> | |
19958708 | 50 | #include "gdb_string.h" |
df8f7274 | 51 | #include "gdb_assert.h" |
44270758 | 52 | #include "inflow.h" |
4e73f23d | 53 | #include "auxv.h" |
0fda6bd2 | 54 | |
19958708 | 55 | /* |
c3f6f71d JM |
56 | * PROCFS.C |
57 | * | |
58 | * This module provides the interface between GDB and the | |
59 | * /proc file system, which is used on many versions of Unix | |
60 | * as a means for debuggers to control other processes. | |
61 | * Examples of the systems that use this interface are: | |
62 | * Irix | |
63 | * Solaris | |
64 | * OSF | |
65 | * Unixware | |
37de36c6 | 66 | * AIX5 |
c3f6f71d | 67 | * |
65554fef | 68 | * /proc works by imitating a file system: you open a simulated file |
c3f6f71d JM |
69 | * that represents the process you wish to interact with, and |
70 | * perform operations on that "file" in order to examine or change | |
71 | * the state of the other process. | |
72 | * | |
73 | * The most important thing to know about /proc and this module | |
74 | * is that there are two very different interfaces to /proc: | |
75 | * One that uses the ioctl system call, and | |
76 | * another that uses read and write system calls. | |
77 | * This module has to support both /proc interfaces. This means | |
78 | * that there are two different ways of doing every basic operation. | |
79 | * | |
19958708 | 80 | * In order to keep most of the code simple and clean, I have |
c3f6f71d JM |
81 | * defined an interface "layer" which hides all these system calls. |
82 | * An ifdef (NEW_PROC_API) determines which interface we are using, | |
83 | * and most or all occurrances of this ifdef should be confined to | |
84 | * this interface layer. | |
c906108c SS |
85 | */ |
86 | ||
87 | ||
c3f6f71d | 88 | /* Determine which /proc API we are using: |
19958708 | 89 | The ioctl API defines PIOCSTATUS, while |
c3f6f71d | 90 | the read/write (multiple fd) API never does. */ |
c906108c | 91 | |
c3f6f71d | 92 | #ifdef NEW_PROC_API |
c906108c | 93 | #include <sys/types.h> |
4b14d3e4 | 94 | #include "gdb_dirent.h" /* opendir/readdir, for listing the LWP's */ |
c3f6f71d | 95 | #endif |
c906108c | 96 | |
c3f6f71d JM |
97 | #include <fcntl.h> /* for O_RDONLY */ |
98 | #include <unistd.h> /* for "X_OK" */ | |
99 | #include "gdb_stat.h" /* for struct stat */ | |
c906108c | 100 | |
103b3ef5 MS |
101 | /* Note: procfs-utils.h must be included after the above system header |
102 | files, because it redefines various system calls using macros. | |
103 | This may be incompatible with the prototype declarations. */ | |
104 | ||
103b3ef5 MS |
105 | #include "proc-utils.h" |
106 | ||
c60c0f5f MS |
107 | /* Prototypes for supply_gregset etc. */ |
108 | #include "gregset.h" | |
109 | ||
c3f6f71d | 110 | /* =================== TARGET_OPS "MODULE" =================== */ |
c906108c | 111 | |
c3f6f71d JM |
112 | /* |
113 | * This module defines the GDB target vector and its methods. | |
114 | */ | |
c906108c | 115 | |
8ab86381 | 116 | static void procfs_open (char *, int); |
a14ed312 KB |
117 | static void procfs_attach (char *, int); |
118 | static void procfs_detach (char *, int); | |
39f77062 | 119 | static void procfs_resume (ptid_t, int, enum target_signal); |
a14ed312 KB |
120 | static int procfs_can_run (void); |
121 | static void procfs_stop (void); | |
122 | static void procfs_files_info (struct target_ops *); | |
56be3814 UW |
123 | static void procfs_fetch_registers (struct regcache *, int); |
124 | static void procfs_store_registers (struct regcache *, int); | |
39f77062 | 125 | static void procfs_notice_signals (ptid_t); |
316f2060 | 126 | static void procfs_prepare_to_store (struct regcache *); |
a14ed312 KB |
127 | static void procfs_kill_inferior (void); |
128 | static void procfs_mourn_inferior (void); | |
c27cda74 | 129 | static void procfs_create_inferior (char *, char *, char **, int); |
39f77062 | 130 | static ptid_t procfs_wait (ptid_t, struct target_waitstatus *); |
043780a1 AC |
131 | static int procfs_xfer_memory (CORE_ADDR, char *, int, int, |
132 | struct mem_attrib *attrib, | |
133 | struct target_ops *); | |
4e73f23d RM |
134 | static LONGEST procfs_xfer_partial (struct target_ops *ops, |
135 | enum target_object object, | |
136 | const char *annex, | |
137 | void *readbuf, const void *writebuf, | |
138 | ULONGEST offset, LONGEST len); | |
a14ed312 | 139 | |
39f77062 | 140 | static int procfs_thread_alive (ptid_t); |
a14ed312 KB |
141 | |
142 | void procfs_find_new_threads (void); | |
39f77062 | 143 | char *procfs_pid_to_str (ptid_t); |
c3f6f71d | 144 | |
19958708 RM |
145 | static int proc_find_memory_regions (int (*) (CORE_ADDR, |
146 | unsigned long, | |
147 | int, int, int, | |
148 | void *), | |
be4d1333 MS |
149 | void *); |
150 | ||
151 | static char * procfs_make_note_section (bfd *, int *); | |
152 | ||
1e03ad20 KB |
153 | static int procfs_can_use_hw_breakpoint (int, int, int); |
154 | ||
c3f6f71d | 155 | struct target_ops procfs_ops; /* the target vector */ |
c906108c | 156 | |
c3f6f71d | 157 | static void |
fba45db2 | 158 | init_procfs_ops (void) |
c3f6f71d | 159 | { |
be4d1333 MS |
160 | procfs_ops.to_shortname = "procfs"; |
161 | procfs_ops.to_longname = "Unix /proc child process"; | |
19958708 | 162 | procfs_ops.to_doc = |
c3f6f71d | 163 | "Unix /proc child process (started by the \"run\" command)."; |
be4d1333 MS |
164 | procfs_ops.to_open = procfs_open; |
165 | procfs_ops.to_can_run = procfs_can_run; | |
166 | procfs_ops.to_create_inferior = procfs_create_inferior; | |
167 | procfs_ops.to_kill = procfs_kill_inferior; | |
168 | procfs_ops.to_mourn_inferior = procfs_mourn_inferior; | |
169 | procfs_ops.to_attach = procfs_attach; | |
170 | procfs_ops.to_detach = procfs_detach; | |
171 | procfs_ops.to_wait = procfs_wait; | |
172 | procfs_ops.to_resume = procfs_resume; | |
173 | procfs_ops.to_prepare_to_store = procfs_prepare_to_store; | |
174 | procfs_ops.to_fetch_registers = procfs_fetch_registers; | |
175 | procfs_ops.to_store_registers = procfs_store_registers; | |
4e73f23d | 176 | procfs_ops.to_xfer_partial = procfs_xfer_partial; |
c8e73a31 | 177 | procfs_ops.deprecated_xfer_memory = procfs_xfer_memory; |
be4d1333 MS |
178 | procfs_ops.to_insert_breakpoint = memory_insert_breakpoint; |
179 | procfs_ops.to_remove_breakpoint = memory_remove_breakpoint; | |
180 | procfs_ops.to_notice_signals = procfs_notice_signals; | |
181 | procfs_ops.to_files_info = procfs_files_info; | |
182 | procfs_ops.to_stop = procfs_stop; | |
183 | ||
184 | procfs_ops.to_terminal_init = terminal_init_inferior; | |
185 | procfs_ops.to_terminal_inferior = terminal_inferior; | |
c3f6f71d | 186 | procfs_ops.to_terminal_ours_for_output = terminal_ours_for_output; |
be4d1333 | 187 | procfs_ops.to_terminal_ours = terminal_ours; |
a790ad35 | 188 | procfs_ops.to_terminal_save_ours = terminal_save_ours; |
be4d1333 MS |
189 | procfs_ops.to_terminal_info = child_terminal_info; |
190 | ||
191 | procfs_ops.to_find_new_threads = procfs_find_new_threads; | |
192 | procfs_ops.to_thread_alive = procfs_thread_alive; | |
193 | procfs_ops.to_pid_to_str = procfs_pid_to_str; | |
194 | ||
195 | procfs_ops.to_has_all_memory = 1; | |
196 | procfs_ops.to_has_memory = 1; | |
197 | procfs_ops.to_has_execution = 1; | |
198 | procfs_ops.to_has_stack = 1; | |
199 | procfs_ops.to_has_registers = 1; | |
200 | procfs_ops.to_stratum = process_stratum; | |
201 | procfs_ops.to_has_thread_control = tc_schedlock; | |
202 | procfs_ops.to_find_memory_regions = proc_find_memory_regions; | |
203 | procfs_ops.to_make_corefile_notes = procfs_make_note_section; | |
1e03ad20 | 204 | procfs_ops.to_can_use_hw_breakpoint = procfs_can_use_hw_breakpoint; |
be4d1333 | 205 | procfs_ops.to_magic = OPS_MAGIC; |
c3f6f71d | 206 | } |
c906108c | 207 | |
c3f6f71d JM |
208 | /* =================== END, TARGET_OPS "MODULE" =================== */ |
209 | ||
c3f6f71d JM |
210 | /* |
211 | * World Unification: | |
212 | * | |
213 | * Put any typedefs, defines etc. here that are required for | |
214 | * the unification of code that handles different versions of /proc. | |
215 | */ | |
216 | ||
217 | #ifdef NEW_PROC_API /* Solaris 7 && 8 method for watchpoints */ | |
37de36c6 | 218 | #ifdef WA_READ |
19958708 | 219 | enum { READ_WATCHFLAG = WA_READ, |
c3f6f71d JM |
220 | WRITE_WATCHFLAG = WA_WRITE, |
221 | EXEC_WATCHFLAG = WA_EXEC, | |
222 | AFTER_WATCHFLAG = WA_TRAPAFTER | |
223 | }; | |
224 | #endif | |
225 | #else /* Irix method for watchpoints */ | |
19958708 | 226 | enum { READ_WATCHFLAG = MA_READ, |
c3f6f71d JM |
227 | WRITE_WATCHFLAG = MA_WRITE, |
228 | EXEC_WATCHFLAG = MA_EXEC, | |
229 | AFTER_WATCHFLAG = 0 /* trapafter not implemented */ | |
230 | }; | |
231 | #endif | |
232 | ||
37de36c6 KB |
233 | /* gdb_sigset_t */ |
234 | #ifdef HAVE_PR_SIGSET_T | |
235 | typedef pr_sigset_t gdb_sigset_t; | |
236 | #else | |
237 | typedef sigset_t gdb_sigset_t; | |
238 | #endif | |
239 | ||
240 | /* sigaction */ | |
241 | #ifdef HAVE_PR_SIGACTION64_T | |
242 | typedef pr_sigaction64_t gdb_sigaction_t; | |
243 | #else | |
244 | typedef struct sigaction gdb_sigaction_t; | |
245 | #endif | |
246 | ||
247 | /* siginfo */ | |
248 | #ifdef HAVE_PR_SIGINFO64_T | |
249 | typedef pr_siginfo64_t gdb_siginfo_t; | |
250 | #else | |
251 | typedef struct siginfo gdb_siginfo_t; | |
252 | #endif | |
253 | ||
254 | /* gdb_premptysysset */ | |
255 | #ifdef premptysysset | |
256 | #define gdb_premptysysset premptysysset | |
257 | #else | |
258 | #define gdb_premptysysset premptyset | |
259 | #endif | |
260 | ||
261 | /* praddsysset */ | |
262 | #ifdef praddsysset | |
263 | #define gdb_praddsysset praddsysset | |
264 | #else | |
265 | #define gdb_praddsysset praddset | |
266 | #endif | |
267 | ||
268 | /* prdelsysset */ | |
269 | #ifdef prdelsysset | |
270 | #define gdb_prdelsysset prdelsysset | |
271 | #else | |
272 | #define gdb_prdelsysset prdelset | |
273 | #endif | |
274 | ||
275 | /* prissyssetmember */ | |
276 | #ifdef prissyssetmember | |
277 | #define gdb_pr_issyssetmember prissyssetmember | |
278 | #else | |
279 | #define gdb_pr_issyssetmember prismember | |
280 | #endif | |
281 | ||
282 | /* As a feature test, saying ``#if HAVE_PRSYSENT_T'' everywhere isn't | |
283 | as intuitively descriptive as it could be, so we'll define | |
284 | DYNAMIC_SYSCALLS to mean the same thing. Anyway, at the time of | |
285 | this writing, this feature is only found on AIX5 systems and | |
286 | basically means that the set of syscalls is not fixed. I.e, | |
287 | there's no nice table that one can #include to get all of the | |
288 | syscall numbers. Instead, they're stored in /proc/PID/sysent | |
289 | for each process. We are at least guaranteed that they won't | |
290 | change over the lifetime of the process. But each process could | |
291 | (in theory) have different syscall numbers. | |
292 | */ | |
293 | #ifdef HAVE_PRSYSENT_T | |
294 | #define DYNAMIC_SYSCALLS | |
295 | #endif | |
c3f6f71d JM |
296 | |
297 | ||
298 | ||
299 | /* =================== STRUCT PROCINFO "MODULE" =================== */ | |
300 | ||
301 | /* FIXME: this comment will soon be out of date W.R.T. threads. */ | |
302 | ||
303 | /* The procinfo struct is a wrapper to hold all the state information | |
304 | concerning a /proc process. There should be exactly one procinfo | |
305 | for each process, and since GDB currently can debug only one | |
306 | process at a time, that means there should be only one procinfo. | |
307 | All of the LWP's of a process can be accessed indirectly thru the | |
308 | single process procinfo. | |
309 | ||
310 | However, against the day when GDB may debug more than one process, | |
311 | this data structure is kept in a list (which for now will hold no | |
312 | more than one member), and many functions will have a pointer to a | |
313 | procinfo as an argument. | |
314 | ||
315 | There will be a separate procinfo structure for use by the (not yet | |
316 | implemented) "info proc" command, so that we can print useful | |
317 | information about any random process without interfering with the | |
318 | inferior's procinfo information. */ | |
319 | ||
320 | #ifdef NEW_PROC_API | |
321 | /* format strings for /proc paths */ | |
322 | # ifndef CTL_PROC_NAME_FMT | |
323 | # define MAIN_PROC_NAME_FMT "/proc/%d" | |
324 | # define CTL_PROC_NAME_FMT "/proc/%d/ctl" | |
325 | # define AS_PROC_NAME_FMT "/proc/%d/as" | |
326 | # define MAP_PROC_NAME_FMT "/proc/%d/map" | |
327 | # define STATUS_PROC_NAME_FMT "/proc/%d/status" | |
328 | # define MAX_PROC_NAME_SIZE sizeof("/proc/99999/lwp/8096/lstatus") | |
329 | # endif | |
330 | /* the name of the proc status struct depends on the implementation */ | |
331 | typedef pstatus_t gdb_prstatus_t; | |
332 | typedef lwpstatus_t gdb_lwpstatus_t; | |
333 | #else /* ! NEW_PROC_API */ | |
334 | /* format strings for /proc paths */ | |
335 | # ifndef CTL_PROC_NAME_FMT | |
336 | # define MAIN_PROC_NAME_FMT "/proc/%05d" | |
337 | # define CTL_PROC_NAME_FMT "/proc/%05d" | |
338 | # define AS_PROC_NAME_FMT "/proc/%05d" | |
339 | # define MAP_PROC_NAME_FMT "/proc/%05d" | |
340 | # define STATUS_PROC_NAME_FMT "/proc/%05d" | |
341 | # define MAX_PROC_NAME_SIZE sizeof("/proc/ttttppppp") | |
342 | # endif | |
c906108c | 343 | /* the name of the proc status struct depends on the implementation */ |
c5aa993b | 344 | typedef prstatus_t gdb_prstatus_t; |
c3f6f71d JM |
345 | typedef prstatus_t gdb_lwpstatus_t; |
346 | #endif /* NEW_PROC_API */ | |
c906108c | 347 | |
c3f6f71d JM |
348 | typedef struct procinfo { |
349 | struct procinfo *next; | |
350 | int pid; /* Process ID */ | |
351 | int tid; /* Thread/LWP id */ | |
c906108c | 352 | |
c3f6f71d JM |
353 | /* process state */ |
354 | int was_stopped; | |
355 | int ignore_next_sigstop; | |
c906108c | 356 | |
19958708 | 357 | /* The following four fd fields may be identical, or may contain |
c3f6f71d JM |
358 | several different fd's, depending on the version of /proc |
359 | (old ioctl or new read/write). */ | |
c906108c | 360 | |
c3f6f71d JM |
361 | int ctl_fd; /* File descriptor for /proc control file */ |
362 | /* | |
363 | * The next three file descriptors are actually only needed in the | |
364 | * read/write, multiple-file-descriptor implemenation (NEW_PROC_API). | |
19958708 | 365 | * However, to avoid a bunch of #ifdefs in the code, we will use |
c3f6f71d JM |
366 | * them uniformly by (in the case of the ioctl single-file-descriptor |
367 | * implementation) filling them with copies of the control fd. | |
368 | */ | |
369 | int status_fd; /* File descriptor for /proc status file */ | |
370 | int as_fd; /* File descriptor for /proc as file */ | |
c906108c | 371 | |
c3f6f71d | 372 | char pathname[MAX_PROC_NAME_SIZE]; /* Pathname to /proc entry */ |
c906108c | 373 | |
c3f6f71d | 374 | fltset_t saved_fltset; /* Saved traced hardware fault set */ |
37de36c6 KB |
375 | gdb_sigset_t saved_sigset; /* Saved traced signal set */ |
376 | gdb_sigset_t saved_sighold; /* Saved held signal set */ | |
377 | sysset_t *saved_exitset; /* Saved traced system call exit set */ | |
378 | sysset_t *saved_entryset; /* Saved traced system call entry set */ | |
c906108c | 379 | |
c3f6f71d | 380 | gdb_prstatus_t prstatus; /* Current process status info */ |
c906108c | 381 | |
c3f6f71d JM |
382 | #ifndef NEW_PROC_API |
383 | gdb_fpregset_t fpregset; /* Current floating point registers */ | |
c5aa993b | 384 | #endif |
37de36c6 KB |
385 | |
386 | #ifdef DYNAMIC_SYSCALLS | |
387 | int num_syscalls; /* Total number of syscalls */ | |
388 | char **syscall_names; /* Syscall number to name map */ | |
389 | #endif | |
19958708 | 390 | |
c3f6f71d | 391 | struct procinfo *thread_list; |
c906108c | 392 | |
c3f6f71d JM |
393 | int status_valid : 1; |
394 | int gregs_valid : 1; | |
395 | int fpregs_valid : 1; | |
396 | int threads_valid: 1; | |
397 | } procinfo; | |
c906108c | 398 | |
c3f6f71d | 399 | static char errmsg[128]; /* shared error msg buffer */ |
c906108c | 400 | |
c3f6f71d | 401 | /* Function prototypes for procinfo module: */ |
c906108c | 402 | |
a14ed312 KB |
403 | static procinfo *find_procinfo_or_die (int pid, int tid); |
404 | static procinfo *find_procinfo (int pid, int tid); | |
405 | static procinfo *create_procinfo (int pid, int tid); | |
406 | static void destroy_procinfo (procinfo * p); | |
004527cb | 407 | static void do_destroy_procinfo_cleanup (void *); |
a14ed312 KB |
408 | static void dead_procinfo (procinfo * p, char *msg, int killp); |
409 | static int open_procinfo_files (procinfo * p, int which); | |
410 | static void close_procinfo_files (procinfo * p); | |
37de36c6 KB |
411 | static int sysset_t_size (procinfo *p); |
412 | static sysset_t *sysset_t_alloc (procinfo * pi); | |
413 | #ifdef DYNAMIC_SYSCALLS | |
414 | static void load_syscalls (procinfo *pi); | |
415 | static void free_syscalls (procinfo *pi); | |
416 | static int find_syscall (procinfo *pi, char *name); | |
417 | #endif /* DYNAMIC_SYSCALLS */ | |
c906108c | 418 | |
c3f6f71d JM |
419 | /* The head of the procinfo list: */ |
420 | static procinfo * procinfo_list; | |
c906108c | 421 | |
c3f6f71d JM |
422 | /* |
423 | * Function: find_procinfo | |
424 | * | |
425 | * Search the procinfo list. | |
426 | * | |
427 | * Returns: pointer to procinfo, or NULL if not found. | |
428 | */ | |
c906108c | 429 | |
19958708 | 430 | static procinfo * |
fba45db2 | 431 | find_procinfo (int pid, int tid) |
c5aa993b | 432 | { |
c3f6f71d | 433 | procinfo *pi; |
c906108c | 434 | |
c3f6f71d JM |
435 | for (pi = procinfo_list; pi; pi = pi->next) |
436 | if (pi->pid == pid) | |
437 | break; | |
c906108c | 438 | |
c3f6f71d JM |
439 | if (pi) |
440 | if (tid) | |
441 | { | |
442 | /* Don't check threads_valid. If we're updating the | |
443 | thread_list, we want to find whatever threads are already | |
444 | here. This means that in general it is the caller's | |
445 | responsibility to check threads_valid and update before | |
446 | calling find_procinfo, if the caller wants to find a new | |
447 | thread. */ | |
448 | ||
449 | for (pi = pi->thread_list; pi; pi = pi->next) | |
450 | if (pi->tid == tid) | |
451 | break; | |
452 | } | |
c906108c | 453 | |
c3f6f71d JM |
454 | return pi; |
455 | } | |
c906108c | 456 | |
c3f6f71d JM |
457 | /* |
458 | * Function: find_procinfo_or_die | |
459 | * | |
460 | * Calls find_procinfo, but errors on failure. | |
461 | */ | |
c906108c | 462 | |
c3f6f71d | 463 | static procinfo * |
fba45db2 | 464 | find_procinfo_or_die (int pid, int tid) |
c3f6f71d JM |
465 | { |
466 | procinfo *pi = find_procinfo (pid, tid); | |
c906108c | 467 | |
c3f6f71d | 468 | if (pi == NULL) |
0fda6bd2 JM |
469 | { |
470 | if (tid) | |
8a3fe4f8 | 471 | error (_("procfs: couldn't find pid %d (kernel thread %d) in procinfo list."), |
0fda6bd2 JM |
472 | pid, tid); |
473 | else | |
8a3fe4f8 | 474 | error (_("procfs: couldn't find pid %d in procinfo list."), pid); |
0fda6bd2 | 475 | } |
c3f6f71d JM |
476 | return pi; |
477 | } | |
c906108c | 478 | |
4d1bcd09 KB |
479 | /* open_with_retry() is a wrapper for open(). The appropriate |
480 | open() call is attempted; if unsuccessful, it will be retried as | |
481 | many times as needed for the EAGAIN and EINTR conditions. | |
19958708 | 482 | |
4d1bcd09 KB |
483 | For other conditions, open_with_retry() will retry the open() a |
484 | limited number of times. In addition, a short sleep is imposed | |
485 | prior to retrying the open(). The reason for this sleep is to give | |
486 | the kernel a chance to catch up and create the file in question in | |
487 | the event that GDB "wins" the race to open a file before the kernel | |
488 | has created it. */ | |
19958708 | 489 | |
4d1bcd09 KB |
490 | static int |
491 | open_with_retry (const char *pathname, int flags) | |
492 | { | |
493 | int retries_remaining, status; | |
494 | ||
495 | retries_remaining = 2; | |
496 | ||
497 | while (1) | |
498 | { | |
499 | status = open (pathname, flags); | |
500 | ||
501 | if (status >= 0 || retries_remaining == 0) | |
502 | break; | |
503 | else if (errno != EINTR && errno != EAGAIN) | |
504 | { | |
505 | retries_remaining--; | |
506 | sleep (1); | |
507 | } | |
508 | } | |
509 | ||
510 | return status; | |
511 | } | |
512 | ||
c3f6f71d JM |
513 | /* |
514 | * Function: open_procinfo_files | |
515 | * | |
516 | * Open the file descriptor for the process or LWP. | |
517 | * ifdef NEW_PROC_API, we only open the control file descriptor; | |
518 | * the others are opened lazily as needed. | |
519 | * else (if not NEW_PROC_API), there is only one real | |
520 | * file descriptor, but we keep multiple copies of it so that | |
521 | * the code that uses them does not have to be #ifdef'd. | |
522 | * | |
523 | * Return: file descriptor, or zero for failure. | |
524 | */ | |
c906108c | 525 | |
c3f6f71d | 526 | enum { FD_CTL, FD_STATUS, FD_AS }; |
c906108c | 527 | |
c3f6f71d | 528 | static int |
fba45db2 | 529 | open_procinfo_files (procinfo *pi, int which) |
c3f6f71d | 530 | { |
0fda6bd2 | 531 | #ifdef NEW_PROC_API |
c3f6f71d | 532 | char tmp[MAX_PROC_NAME_SIZE]; |
0fda6bd2 | 533 | #endif |
c3f6f71d JM |
534 | int fd; |
535 | ||
19958708 | 536 | /* |
c3f6f71d JM |
537 | * This function is getting ALMOST long enough to break up into several. |
538 | * Here is some rationale: | |
539 | * | |
540 | * NEW_PROC_API (Solaris 2.6, Solaris 2.7, Unixware): | |
19958708 | 541 | * There are several file descriptors that may need to be open |
c3f6f71d JM |
542 | * for any given process or LWP. The ones we're intereted in are: |
543 | * - control (ctl) write-only change the state | |
544 | * - status (status) read-only query the state | |
545 | * - address space (as) read/write access memory | |
546 | * - map (map) read-only virtual addr map | |
547 | * Most of these are opened lazily as they are needed. | |
19958708 | 548 | * The pathnames for the 'files' for an LWP look slightly |
c3f6f71d JM |
549 | * different from those of a first-class process: |
550 | * Pathnames for a process (<proc-id>): | |
551 | * /proc/<proc-id>/ctl | |
552 | * /proc/<proc-id>/status | |
553 | * /proc/<proc-id>/as | |
554 | * /proc/<proc-id>/map | |
555 | * Pathnames for an LWP (lwp-id): | |
556 | * /proc/<proc-id>/lwp/<lwp-id>/lwpctl | |
557 | * /proc/<proc-id>/lwp/<lwp-id>/lwpstatus | |
558 | * An LWP has no map or address space file descriptor, since | |
559 | * the memory map and address space are shared by all LWPs. | |
560 | * | |
561 | * Everyone else (Solaris 2.5, Irix, OSF) | |
562 | * There is only one file descriptor for each process or LWP. | |
563 | * For convenience, we copy the same file descriptor into all | |
564 | * three fields of the procinfo struct (ctl_fd, status_fd, and | |
565 | * as_fd, see NEW_PROC_API above) so that code that uses them | |
19958708 | 566 | * doesn't need any #ifdef's. |
c3f6f71d JM |
567 | * Pathname for all: |
568 | * /proc/<proc-id> | |
569 | * | |
570 | * Solaris 2.5 LWP's: | |
19958708 | 571 | * Each LWP has an independent file descriptor, but these |
c3f6f71d JM |
572 | * are not obtained via the 'open' system call like the rest: |
573 | * instead, they're obtained thru an ioctl call (PIOCOPENLWP) | |
574 | * to the file descriptor of the parent process. | |
575 | * | |
576 | * OSF threads: | |
577 | * These do not even have their own independent file descriptor. | |
578 | * All operations are carried out on the file descriptor of the | |
579 | * parent process. Therefore we just call open again for each | |
580 | * thread, getting a new handle for the same 'file'. | |
581 | */ | |
582 | ||
583 | #ifdef NEW_PROC_API | |
584 | /* | |
585 | * In this case, there are several different file descriptors that | |
586 | * we might be asked to open. The control file descriptor will be | |
587 | * opened early, but the others will be opened lazily as they are | |
588 | * needed. | |
589 | */ | |
590 | ||
591 | strcpy (tmp, pi->pathname); | |
592 | switch (which) { /* which file descriptor to open? */ | |
593 | case FD_CTL: | |
594 | if (pi->tid) | |
595 | strcat (tmp, "/lwpctl"); | |
596 | else | |
597 | strcat (tmp, "/ctl"); | |
4d1bcd09 | 598 | fd = open_with_retry (tmp, O_WRONLY); |
c3f6f71d JM |
599 | if (fd <= 0) |
600 | return 0; /* fail */ | |
601 | pi->ctl_fd = fd; | |
602 | break; | |
603 | case FD_AS: | |
604 | if (pi->tid) | |
605 | return 0; /* there is no 'as' file descriptor for an lwp */ | |
606 | strcat (tmp, "/as"); | |
4d1bcd09 | 607 | fd = open_with_retry (tmp, O_RDWR); |
c3f6f71d JM |
608 | if (fd <= 0) |
609 | return 0; /* fail */ | |
610 | pi->as_fd = fd; | |
611 | break; | |
612 | case FD_STATUS: | |
613 | if (pi->tid) | |
614 | strcat (tmp, "/lwpstatus"); | |
615 | else | |
616 | strcat (tmp, "/status"); | |
4d1bcd09 | 617 | fd = open_with_retry (tmp, O_RDONLY); |
c3f6f71d JM |
618 | if (fd <= 0) |
619 | return 0; /* fail */ | |
620 | pi->status_fd = fd; | |
621 | break; | |
622 | default: | |
623 | return 0; /* unknown file descriptor */ | |
624 | } | |
625 | #else /* not NEW_PROC_API */ | |
626 | /* | |
627 | * In this case, there is only one file descriptor for each procinfo | |
628 | * (ie. each process or LWP). In fact, only the file descriptor for | |
629 | * the process can actually be opened by an 'open' system call. | |
19958708 RM |
630 | * The ones for the LWPs have to be obtained thru an IOCTL call |
631 | * on the process's file descriptor. | |
c3f6f71d JM |
632 | * |
633 | * For convenience, we copy each procinfo's single file descriptor | |
19958708 | 634 | * into all of the fields occupied by the several file descriptors |
c3f6f71d JM |
635 | * of the NEW_PROC_API implementation. That way, the code that uses |
636 | * them can be written without ifdefs. | |
637 | */ | |
638 | ||
639 | ||
640 | #ifdef PIOCTSTATUS /* OSF */ | |
4d1bcd09 KB |
641 | /* Only one FD; just open it. */ |
642 | if ((fd = open_with_retry (pi->pathname, O_RDWR)) == 0) | |
c3f6f71d JM |
643 | return 0; |
644 | #else /* Sol 2.5, Irix, other? */ | |
645 | if (pi->tid == 0) /* Master procinfo for the process */ | |
646 | { | |
4d1bcd09 | 647 | fd = open_with_retry (pi->pathname, O_RDWR); |
c3f6f71d JM |
648 | if (fd <= 0) |
649 | return 0; /* fail */ | |
650 | } | |
651 | else /* LWP thread procinfo */ | |
652 | { | |
653 | #ifdef PIOCOPENLWP /* Sol 2.5, thread/LWP */ | |
654 | procinfo *process; | |
655 | int lwpid = pi->tid; | |
656 | ||
657 | /* Find the procinfo for the entire process. */ | |
658 | if ((process = find_procinfo (pi->pid, 0)) == NULL) | |
659 | return 0; /* fail */ | |
660 | ||
661 | /* Now obtain the file descriptor for the LWP. */ | |
662 | if ((fd = ioctl (process->ctl_fd, PIOCOPENLWP, &lwpid)) <= 0) | |
663 | return 0; /* fail */ | |
664 | #else /* Irix, other? */ | |
665 | return 0; /* Don't know how to open threads */ | |
666 | #endif /* Sol 2.5 PIOCOPENLWP */ | |
667 | } | |
668 | #endif /* OSF PIOCTSTATUS */ | |
669 | pi->ctl_fd = pi->as_fd = pi->status_fd = fd; | |
670 | #endif /* NEW_PROC_API */ | |
c906108c | 671 | |
c3f6f71d JM |
672 | return 1; /* success */ |
673 | } | |
c906108c | 674 | |
c3f6f71d JM |
675 | /* |
676 | * Function: create_procinfo | |
677 | * | |
678 | * Allocate a data structure and link it into the procinfo list. | |
02d5252f | 679 | * (First tries to find a pre-existing one (FIXME: why?) |
c3f6f71d JM |
680 | * |
681 | * Return: pointer to new procinfo struct. | |
682 | */ | |
c906108c | 683 | |
c3f6f71d | 684 | static procinfo * |
fba45db2 | 685 | create_procinfo (int pid, int tid) |
c3f6f71d JM |
686 | { |
687 | procinfo *pi, *parent; | |
c906108c | 688 | |
0d06e24b | 689 | if ((pi = find_procinfo (pid, tid))) |
c3f6f71d | 690 | return pi; /* Already exists, nothing to do. */ |
c906108c | 691 | |
c3f6f71d JM |
692 | /* find parent before doing malloc, to save having to cleanup */ |
693 | if (tid != 0) | |
694 | parent = find_procinfo_or_die (pid, 0); /* FIXME: should I | |
695 | create it if it | |
696 | doesn't exist yet? */ | |
c906108c | 697 | |
c3f6f71d JM |
698 | pi = (procinfo *) xmalloc (sizeof (procinfo)); |
699 | memset (pi, 0, sizeof (procinfo)); | |
700 | pi->pid = pid; | |
701 | pi->tid = tid; | |
c906108c | 702 | |
37de36c6 KB |
703 | #ifdef DYNAMIC_SYSCALLS |
704 | load_syscalls (pi); | |
705 | #endif | |
706 | ||
1d5e0602 KB |
707 | pi->saved_entryset = sysset_t_alloc (pi); |
708 | pi->saved_exitset = sysset_t_alloc (pi); | |
709 | ||
c3f6f71d JM |
710 | /* Chain into list. */ |
711 | if (tid == 0) | |
712 | { | |
713 | sprintf (pi->pathname, MAIN_PROC_NAME_FMT, pid); | |
714 | pi->next = procinfo_list; | |
715 | procinfo_list = pi; | |
716 | } | |
717 | else | |
718 | { | |
719 | #ifdef NEW_PROC_API | |
720 | sprintf (pi->pathname, "/proc/%05d/lwp/%d", pid, tid); | |
721 | #else | |
722 | sprintf (pi->pathname, MAIN_PROC_NAME_FMT, pid); | |
723 | #endif | |
724 | pi->next = parent->thread_list; | |
725 | parent->thread_list = pi; | |
726 | } | |
727 | return pi; | |
728 | } | |
c906108c | 729 | |
c3f6f71d JM |
730 | /* |
731 | * Function: close_procinfo_files | |
732 | * | |
733 | * Close all file descriptors associated with the procinfo | |
734 | */ | |
c906108c | 735 | |
c3f6f71d | 736 | static void |
fba45db2 | 737 | close_procinfo_files (procinfo *pi) |
c3f6f71d JM |
738 | { |
739 | if (pi->ctl_fd > 0) | |
740 | close (pi->ctl_fd); | |
741 | #ifdef NEW_PROC_API | |
742 | if (pi->as_fd > 0) | |
743 | close (pi->as_fd); | |
744 | if (pi->status_fd > 0) | |
745 | close (pi->status_fd); | |
746 | #endif | |
747 | pi->ctl_fd = pi->as_fd = pi->status_fd = 0; | |
748 | } | |
c906108c | 749 | |
c3f6f71d JM |
750 | /* |
751 | * Function: destroy_procinfo | |
752 | * | |
753 | * Destructor function. Close, unlink and deallocate the object. | |
754 | */ | |
c906108c | 755 | |
c3f6f71d | 756 | static void |
fba45db2 | 757 | destroy_one_procinfo (procinfo **list, procinfo *pi) |
c3f6f71d JM |
758 | { |
759 | procinfo *ptr; | |
760 | ||
761 | /* Step one: unlink the procinfo from its list */ | |
762 | if (pi == *list) | |
763 | *list = pi->next; | |
19958708 | 764 | else |
c3f6f71d JM |
765 | for (ptr = *list; ptr; ptr = ptr->next) |
766 | if (ptr->next == pi) | |
767 | { | |
768 | ptr->next = pi->next; | |
769 | break; | |
770 | } | |
7a292a7a | 771 | |
c3f6f71d JM |
772 | /* Step two: close any open file descriptors */ |
773 | close_procinfo_files (pi); | |
7a292a7a | 774 | |
c3f6f71d | 775 | /* Step three: free the memory. */ |
37de36c6 KB |
776 | #ifdef DYNAMIC_SYSCALLS |
777 | free_syscalls (pi); | |
778 | #endif | |
1d5e0602 KB |
779 | xfree (pi->saved_entryset); |
780 | xfree (pi->saved_exitset); | |
b8c9b27d | 781 | xfree (pi); |
c3f6f71d | 782 | } |
c906108c | 783 | |
c3f6f71d | 784 | static void |
fba45db2 | 785 | destroy_procinfo (procinfo *pi) |
c3f6f71d JM |
786 | { |
787 | procinfo *tmp; | |
c906108c | 788 | |
c3f6f71d JM |
789 | if (pi->tid != 0) /* destroy a thread procinfo */ |
790 | { | |
791 | tmp = find_procinfo (pi->pid, 0); /* find the parent process */ | |
792 | destroy_one_procinfo (&tmp->thread_list, pi); | |
793 | } | |
794 | else /* destroy a process procinfo and all its threads */ | |
795 | { | |
796 | /* First destroy the children, if any; */ | |
797 | while (pi->thread_list != NULL) | |
798 | destroy_one_procinfo (&pi->thread_list, pi->thread_list); | |
799 | /* Then destroy the parent. Genocide!!! */ | |
800 | destroy_one_procinfo (&procinfo_list, pi); | |
801 | } | |
802 | } | |
c906108c | 803 | |
004527cb AC |
804 | static void |
805 | do_destroy_procinfo_cleanup (void *pi) | |
806 | { | |
807 | destroy_procinfo (pi); | |
808 | } | |
809 | ||
c3f6f71d | 810 | enum { NOKILL, KILL }; |
c906108c | 811 | |
c3f6f71d JM |
812 | /* |
813 | * Function: dead_procinfo | |
814 | * | |
815 | * To be called on a non_recoverable error for a procinfo. | |
816 | * Prints error messages, optionally sends a SIGKILL to the process, | |
817 | * then destroys the data structure. | |
818 | */ | |
c906108c | 819 | |
c3f6f71d | 820 | static void |
fba45db2 | 821 | dead_procinfo (procinfo *pi, char *msg, int kill_p) |
c3f6f71d JM |
822 | { |
823 | char procfile[80]; | |
c906108c | 824 | |
c3f6f71d JM |
825 | if (pi->pathname) |
826 | { | |
827 | print_sys_errmsg (pi->pathname, errno); | |
828 | } | |
829 | else | |
830 | { | |
831 | sprintf (procfile, "process %d", pi->pid); | |
832 | print_sys_errmsg (procfile, errno); | |
833 | } | |
834 | if (kill_p == KILL) | |
835 | kill (pi->pid, SIGKILL); | |
c906108c | 836 | |
c3f6f71d | 837 | destroy_procinfo (pi); |
8a3fe4f8 | 838 | error ((msg)); |
c3f6f71d | 839 | } |
c906108c | 840 | |
37de36c6 KB |
841 | /* |
842 | * Function: sysset_t_size | |
843 | * | |
844 | * Returns the (complete) size of a sysset_t struct. Normally, this | |
845 | * is just sizeof (syset_t), but in the case of Monterey/64, the actual | |
846 | * size of sysset_t isn't known until runtime. | |
847 | */ | |
848 | ||
849 | static int | |
850 | sysset_t_size (procinfo * pi) | |
851 | { | |
852 | #ifndef DYNAMIC_SYSCALLS | |
853 | return sizeof (sysset_t); | |
854 | #else | |
855 | return sizeof (sysset_t) - sizeof (uint64_t) | |
856 | + sizeof (uint64_t) * ((pi->num_syscalls + (8 * sizeof (uint64_t) - 1)) | |
857 | / (8 * sizeof (uint64_t))); | |
858 | #endif | |
859 | } | |
860 | ||
861 | /* Function: sysset_t_alloc | |
19958708 | 862 | |
37de36c6 KB |
863 | Allocate and (partially) initialize a sysset_t struct. */ |
864 | ||
865 | static sysset_t * | |
866 | sysset_t_alloc (procinfo * pi) | |
867 | { | |
868 | sysset_t *ret; | |
869 | int size = sysset_t_size (pi); | |
870 | ret = xmalloc (size); | |
871 | #ifdef DYNAMIC_SYSCALLS | |
872 | ret->pr_size = (pi->num_syscalls + (8 * sizeof (uint64_t) - 1)) | |
873 | / (8 * sizeof (uint64_t)); | |
874 | #endif | |
875 | return ret; | |
876 | } | |
877 | ||
878 | #ifdef DYNAMIC_SYSCALLS | |
879 | ||
880 | /* Function: load_syscalls | |
19958708 | 881 | |
37de36c6 KB |
882 | Extract syscall numbers and names from /proc/<pid>/sysent. Initialize |
883 | pi->num_syscalls with the number of syscalls and pi->syscall_names | |
884 | with the names. (Certain numbers may be skipped in which case the | |
885 | names for these numbers will be left as NULL.) */ | |
886 | ||
887 | #define MAX_SYSCALL_NAME_LENGTH 256 | |
888 | #define MAX_SYSCALLS 65536 | |
889 | ||
890 | static void | |
891 | load_syscalls (procinfo *pi) | |
892 | { | |
893 | char pathname[MAX_PROC_NAME_SIZE]; | |
894 | int sysent_fd; | |
895 | prsysent_t header; | |
896 | prsyscall_t *syscalls; | |
897 | int i, size, maxcall; | |
898 | ||
899 | pi->num_syscalls = 0; | |
900 | pi->syscall_names = 0; | |
901 | ||
902 | /* Open the file descriptor for the sysent file */ | |
903 | sprintf (pathname, "/proc/%d/sysent", pi->pid); | |
4d1bcd09 | 904 | sysent_fd = open_with_retry (pathname, O_RDONLY); |
37de36c6 KB |
905 | if (sysent_fd < 0) |
906 | { | |
8a3fe4f8 | 907 | error (_("load_syscalls: Can't open /proc/%d/sysent"), pi->pid); |
37de36c6 KB |
908 | } |
909 | ||
910 | size = sizeof header - sizeof (prsyscall_t); | |
911 | if (read (sysent_fd, &header, size) != size) | |
912 | { | |
8a3fe4f8 | 913 | error (_("load_syscalls: Error reading /proc/%d/sysent"), pi->pid); |
37de36c6 KB |
914 | } |
915 | ||
916 | if (header.pr_nsyscalls == 0) | |
917 | { | |
8a3fe4f8 | 918 | error (_("load_syscalls: /proc/%d/sysent contains no syscalls!"), pi->pid); |
37de36c6 KB |
919 | } |
920 | ||
921 | size = header.pr_nsyscalls * sizeof (prsyscall_t); | |
922 | syscalls = xmalloc (size); | |
923 | ||
924 | if (read (sysent_fd, syscalls, size) != size) | |
925 | { | |
926 | xfree (syscalls); | |
8a3fe4f8 | 927 | error (_("load_syscalls: Error reading /proc/%d/sysent"), pi->pid); |
37de36c6 KB |
928 | } |
929 | ||
930 | /* Find maximum syscall number. This may not be the same as | |
931 | pr_nsyscalls since that value refers to the number of entries | |
932 | in the table. (Also, the docs indicate that some system | |
933 | call numbers may be skipped.) */ | |
934 | ||
935 | maxcall = syscalls[0].pr_number; | |
936 | ||
937 | for (i = 1; i < header.pr_nsyscalls; i++) | |
938 | if (syscalls[i].pr_number > maxcall | |
939 | && syscalls[i].pr_nameoff > 0 | |
940 | && syscalls[i].pr_number < MAX_SYSCALLS) | |
941 | maxcall = syscalls[i].pr_number; | |
942 | ||
943 | pi->num_syscalls = maxcall+1; | |
944 | pi->syscall_names = xmalloc (pi->num_syscalls * sizeof (char *)); | |
945 | ||
946 | for (i = 0; i < pi->num_syscalls; i++) | |
947 | pi->syscall_names[i] = NULL; | |
948 | ||
949 | /* Read the syscall names in */ | |
950 | for (i = 0; i < header.pr_nsyscalls; i++) | |
951 | { | |
952 | char namebuf[MAX_SYSCALL_NAME_LENGTH]; | |
953 | int nread; | |
954 | int callnum; | |
955 | ||
956 | if (syscalls[i].pr_number >= MAX_SYSCALLS | |
957 | || syscalls[i].pr_number < 0 | |
958 | || syscalls[i].pr_nameoff <= 0 | |
959 | || (lseek (sysent_fd, (off_t) syscalls[i].pr_nameoff, SEEK_SET) | |
960 | != (off_t) syscalls[i].pr_nameoff)) | |
961 | continue; | |
962 | ||
963 | nread = read (sysent_fd, namebuf, sizeof namebuf); | |
964 | if (nread <= 0) | |
965 | continue; | |
966 | ||
967 | callnum = syscalls[i].pr_number; | |
968 | ||
969 | if (pi->syscall_names[callnum] != NULL) | |
970 | { | |
971 | /* FIXME: Generate warning */ | |
972 | continue; | |
973 | } | |
974 | ||
975 | namebuf[nread-1] = '\0'; | |
976 | size = strlen (namebuf) + 1; | |
977 | pi->syscall_names[callnum] = xmalloc (size); | |
978 | strncpy (pi->syscall_names[callnum], namebuf, size-1); | |
979 | pi->syscall_names[callnum][size-1] = '\0'; | |
980 | } | |
19958708 | 981 | |
37de36c6 KB |
982 | close (sysent_fd); |
983 | xfree (syscalls); | |
984 | } | |
985 | ||
986 | /* Function: free_syscalls | |
19958708 | 987 | |
37de36c6 KB |
988 | Free the space allocated for the syscall names from the procinfo |
989 | structure. */ | |
990 | ||
991 | static void | |
992 | free_syscalls (procinfo *pi) | |
993 | { | |
994 | if (pi->syscall_names) | |
995 | { | |
996 | int i; | |
997 | ||
998 | for (i = 0; i < pi->num_syscalls; i++) | |
999 | if (pi->syscall_names[i] != NULL) | |
1000 | xfree (pi->syscall_names[i]); | |
1001 | ||
1002 | xfree (pi->syscall_names); | |
1003 | pi->syscall_names = 0; | |
1004 | } | |
1005 | } | |
1006 | ||
1007 | /* Function: find_syscall | |
1008 | ||
1009 | Given a name, look up (and return) the corresponding syscall number. | |
1010 | If no match is found, return -1. */ | |
19958708 | 1011 | |
37de36c6 KB |
1012 | static int |
1013 | find_syscall (procinfo *pi, char *name) | |
1014 | { | |
1015 | int i; | |
1016 | for (i = 0; i < pi->num_syscalls; i++) | |
1017 | { | |
1018 | if (pi->syscall_names[i] && strcmp (name, pi->syscall_names[i]) == 0) | |
1019 | return i; | |
1020 | } | |
1021 | return -1; | |
1022 | } | |
1023 | #endif | |
1024 | ||
c3f6f71d | 1025 | /* =================== END, STRUCT PROCINFO "MODULE" =================== */ |
c906108c | 1026 | |
c3f6f71d | 1027 | /* =================== /proc "MODULE" =================== */ |
c906108c | 1028 | |
c3f6f71d JM |
1029 | /* |
1030 | * This "module" is the interface layer between the /proc system API | |
19958708 | 1031 | * and the gdb target vector functions. This layer consists of |
c3f6f71d JM |
1032 | * access functions that encapsulate each of the basic operations |
1033 | * that we need to use from the /proc API. | |
1034 | * | |
1035 | * The main motivation for this layer is to hide the fact that | |
1036 | * there are two very different implementations of the /proc API. | |
1037 | * Rather than have a bunch of #ifdefs all thru the gdb target vector | |
1038 | * functions, we do our best to hide them all in here. | |
1039 | */ | |
c906108c | 1040 | |
a14ed312 KB |
1041 | int proc_get_status (procinfo * pi); |
1042 | long proc_flags (procinfo * pi); | |
1043 | int proc_why (procinfo * pi); | |
1044 | int proc_what (procinfo * pi); | |
1045 | int proc_set_run_on_last_close (procinfo * pi); | |
1046 | int proc_unset_run_on_last_close (procinfo * pi); | |
1047 | int proc_set_inherit_on_fork (procinfo * pi); | |
1048 | int proc_unset_inherit_on_fork (procinfo * pi); | |
1049 | int proc_set_async (procinfo * pi); | |
1050 | int proc_unset_async (procinfo * pi); | |
1051 | int proc_stop_process (procinfo * pi); | |
1052 | int proc_trace_signal (procinfo * pi, int signo); | |
1053 | int proc_ignore_signal (procinfo * pi, int signo); | |
1054 | int proc_clear_current_fault (procinfo * pi); | |
1055 | int proc_set_current_signal (procinfo * pi, int signo); | |
1056 | int proc_clear_current_signal (procinfo * pi); | |
1057 | int proc_set_gregs (procinfo * pi); | |
1058 | int proc_set_fpregs (procinfo * pi); | |
1059 | int proc_wait_for_stop (procinfo * pi); | |
1060 | int proc_run_process (procinfo * pi, int step, int signo); | |
1061 | int proc_kill (procinfo * pi, int signo); | |
1062 | int proc_parent_pid (procinfo * pi); | |
1063 | int proc_get_nthreads (procinfo * pi); | |
1064 | int proc_get_current_thread (procinfo * pi); | |
37de36c6 | 1065 | int proc_set_held_signals (procinfo * pi, gdb_sigset_t * sighold); |
a14ed312 KB |
1066 | int proc_set_traced_sysexit (procinfo * pi, sysset_t * sysset); |
1067 | int proc_set_traced_sysentry (procinfo * pi, sysset_t * sysset); | |
1068 | int proc_set_traced_faults (procinfo * pi, fltset_t * fltset); | |
37de36c6 | 1069 | int proc_set_traced_signals (procinfo * pi, gdb_sigset_t * sigset); |
a14ed312 KB |
1070 | |
1071 | int proc_update_threads (procinfo * pi); | |
1072 | int proc_iterate_over_threads (procinfo * pi, | |
8ab86381 KB |
1073 | int (*func) (procinfo *, procinfo *, void *), |
1074 | void *ptr); | |
a14ed312 KB |
1075 | |
1076 | gdb_gregset_t *proc_get_gregs (procinfo * pi); | |
1077 | gdb_fpregset_t *proc_get_fpregs (procinfo * pi); | |
1078 | sysset_t *proc_get_traced_sysexit (procinfo * pi, sysset_t * save); | |
1079 | sysset_t *proc_get_traced_sysentry (procinfo * pi, sysset_t * save); | |
1080 | fltset_t *proc_get_traced_faults (procinfo * pi, fltset_t * save); | |
37de36c6 KB |
1081 | gdb_sigset_t *proc_get_traced_signals (procinfo * pi, gdb_sigset_t * save); |
1082 | gdb_sigset_t *proc_get_held_signals (procinfo * pi, gdb_sigset_t * save); | |
1083 | gdb_sigset_t *proc_get_pending_signals (procinfo * pi, gdb_sigset_t * save); | |
1084 | gdb_sigaction_t *proc_get_signal_actions (procinfo * pi, gdb_sigaction_t *save); | |
a14ed312 KB |
1085 | |
1086 | void proc_warn (procinfo * pi, char *func, int line); | |
1087 | void proc_error (procinfo * pi, char *func, int line); | |
c906108c | 1088 | |
c3f6f71d | 1089 | void |
fba45db2 | 1090 | proc_warn (procinfo *pi, char *func, int line) |
c3f6f71d JM |
1091 | { |
1092 | sprintf (errmsg, "procfs: %s line %d, %s", func, line, pi->pathname); | |
1093 | print_sys_errmsg (errmsg, errno); | |
1094 | } | |
c906108c | 1095 | |
c3f6f71d | 1096 | void |
fba45db2 | 1097 | proc_error (procinfo *pi, char *func, int line) |
c3f6f71d JM |
1098 | { |
1099 | sprintf (errmsg, "procfs: %s line %d, %s", func, line, pi->pathname); | |
1100 | perror_with_name (errmsg); | |
1101 | } | |
c906108c | 1102 | |
c3f6f71d JM |
1103 | /* |
1104 | * Function: proc_get_status | |
1105 | * | |
1106 | * Updates the status struct in the procinfo. | |
1107 | * There is a 'valid' flag, to let other functions know when | |
1108 | * this function needs to be called (so the status is only | |
1109 | * read when it is needed). The status file descriptor is | |
1110 | * also only opened when it is needed. | |
1111 | * | |
1112 | * Return: non-zero for success, zero for failure. | |
1113 | */ | |
c906108c | 1114 | |
c3f6f71d | 1115 | int |
fba45db2 | 1116 | proc_get_status (procinfo *pi) |
c3f6f71d JM |
1117 | { |
1118 | /* Status file descriptor is opened "lazily" */ | |
1119 | if (pi->status_fd == 0 && | |
1120 | open_procinfo_files (pi, FD_STATUS) == 0) | |
1121 | { | |
1122 | pi->status_valid = 0; | |
1123 | return 0; | |
1124 | } | |
c906108c | 1125 | |
c3f6f71d JM |
1126 | #ifdef NEW_PROC_API |
1127 | if (lseek (pi->status_fd, 0, SEEK_SET) < 0) | |
1128 | pi->status_valid = 0; /* fail */ | |
1129 | else | |
1130 | { | |
19958708 | 1131 | /* Sigh... I have to read a different data structure, |
c3f6f71d JM |
1132 | depending on whether this is a main process or an LWP. */ |
1133 | if (pi->tid) | |
19958708 RM |
1134 | pi->status_valid = (read (pi->status_fd, |
1135 | (char *) &pi->prstatus.pr_lwp, | |
c3f6f71d JM |
1136 | sizeof (lwpstatus_t)) |
1137 | == sizeof (lwpstatus_t)); | |
1138 | else | |
1139 | { | |
19958708 | 1140 | pi->status_valid = (read (pi->status_fd, |
c3f6f71d JM |
1141 | (char *) &pi->prstatus, |
1142 | sizeof (gdb_prstatus_t)) | |
1143 | == sizeof (gdb_prstatus_t)); | |
1144 | #if 0 /*def UNIXWARE*/ | |
1145 | if (pi->status_valid && | |
1146 | (pi->prstatus.pr_lwp.pr_flags & PR_ISTOP) && | |
1147 | pi->prstatus.pr_lwp.pr_why == PR_REQUESTED) | |
1148 | /* Unixware peculiarity -- read the damn thing again! */ | |
19958708 | 1149 | pi->status_valid = (read (pi->status_fd, |
c3f6f71d JM |
1150 | (char *) &pi->prstatus, |
1151 | sizeof (gdb_prstatus_t)) | |
1152 | == sizeof (gdb_prstatus_t)); | |
1153 | #endif /* UNIXWARE */ | |
1154 | } | |
1155 | } | |
1156 | #else /* ioctl method */ | |
1157 | #ifdef PIOCTSTATUS /* osf */ | |
1158 | if (pi->tid == 0) /* main process */ | |
1159 | { | |
1160 | /* Just read the danged status. Now isn't that simple? */ | |
19958708 | 1161 | pi->status_valid = |
c3f6f71d JM |
1162 | (ioctl (pi->status_fd, PIOCSTATUS, &pi->prstatus) >= 0); |
1163 | } | |
1164 | else | |
1165 | { | |
1166 | int win; | |
1167 | struct { | |
1168 | long pr_count; | |
1169 | tid_t pr_error_thread; | |
1170 | struct prstatus status; | |
1171 | } thread_status; | |
1172 | ||
1173 | thread_status.pr_count = 1; | |
1174 | thread_status.status.pr_tid = pi->tid; | |
1175 | win = (ioctl (pi->status_fd, PIOCTSTATUS, &thread_status) >= 0); | |
1176 | if (win) | |
1177 | { | |
19958708 | 1178 | memcpy (&pi->prstatus, &thread_status.status, |
c3f6f71d JM |
1179 | sizeof (pi->prstatus)); |
1180 | pi->status_valid = 1; | |
1181 | } | |
1182 | } | |
1183 | #else | |
1184 | /* Just read the danged status. Now isn't that simple? */ | |
1185 | pi->status_valid = (ioctl (pi->status_fd, PIOCSTATUS, &pi->prstatus) >= 0); | |
1186 | #endif | |
1187 | #endif | |
c906108c | 1188 | |
c3f6f71d JM |
1189 | if (pi->status_valid) |
1190 | { | |
19958708 | 1191 | PROC_PRETTYFPRINT_STATUS (proc_flags (pi), |
c3f6f71d | 1192 | proc_why (pi), |
19958708 | 1193 | proc_what (pi), |
c3f6f71d JM |
1194 | proc_get_current_thread (pi)); |
1195 | } | |
c906108c | 1196 | |
c3f6f71d JM |
1197 | /* The status struct includes general regs, so mark them valid too */ |
1198 | pi->gregs_valid = pi->status_valid; | |
1199 | #ifdef NEW_PROC_API | |
19958708 | 1200 | /* In the read/write multiple-fd model, |
c3f6f71d JM |
1201 | the status struct includes the fp regs too, so mark them valid too */ |
1202 | pi->fpregs_valid = pi->status_valid; | |
1203 | #endif | |
1204 | return pi->status_valid; /* True if success, false if failure. */ | |
1205 | } | |
c906108c | 1206 | |
c3f6f71d JM |
1207 | /* |
1208 | * Function: proc_flags | |
1209 | * | |
1210 | * returns the process flags (pr_flags field). | |
19958708 | 1211 | */ |
c3f6f71d JM |
1212 | |
1213 | long | |
fba45db2 | 1214 | proc_flags (procinfo *pi) |
c3f6f71d JM |
1215 | { |
1216 | if (!pi->status_valid) | |
1217 | if (!proc_get_status (pi)) | |
1218 | return 0; /* FIXME: not a good failure value (but what is?) */ | |
c906108c | 1219 | |
c3f6f71d | 1220 | #ifdef NEW_PROC_API |
0d06e24b JM |
1221 | # ifdef UNIXWARE |
1222 | /* UnixWare 7.1 puts process status flags, e.g. PR_ASYNC, in | |
1223 | pstatus_t and LWP status flags, e.g. PR_STOPPED, in lwpstatus_t. | |
1224 | The two sets of flags don't overlap. */ | |
1225 | return pi->prstatus.pr_flags | pi->prstatus.pr_lwp.pr_flags; | |
1226 | # else | |
c3f6f71d | 1227 | return pi->prstatus.pr_lwp.pr_flags; |
0d06e24b | 1228 | # endif |
c3f6f71d JM |
1229 | #else |
1230 | return pi->prstatus.pr_flags; | |
1231 | #endif | |
1232 | } | |
c906108c | 1233 | |
c3f6f71d JM |
1234 | /* |
1235 | * Function: proc_why | |
1236 | * | |
1237 | * returns the pr_why field (why the process stopped). | |
1238 | */ | |
c906108c | 1239 | |
c3f6f71d | 1240 | int |
fba45db2 | 1241 | proc_why (procinfo *pi) |
c3f6f71d JM |
1242 | { |
1243 | if (!pi->status_valid) | |
1244 | if (!proc_get_status (pi)) | |
1245 | return 0; /* FIXME: not a good failure value (but what is?) */ | |
c906108c | 1246 | |
c3f6f71d JM |
1247 | #ifdef NEW_PROC_API |
1248 | return pi->prstatus.pr_lwp.pr_why; | |
1249 | #else | |
1250 | return pi->prstatus.pr_why; | |
1251 | #endif | |
1252 | } | |
c906108c | 1253 | |
c3f6f71d JM |
1254 | /* |
1255 | * Function: proc_what | |
1256 | * | |
1257 | * returns the pr_what field (details of why the process stopped). | |
1258 | */ | |
c906108c | 1259 | |
c3f6f71d | 1260 | int |
fba45db2 | 1261 | proc_what (procinfo *pi) |
c3f6f71d JM |
1262 | { |
1263 | if (!pi->status_valid) | |
1264 | if (!proc_get_status (pi)) | |
1265 | return 0; /* FIXME: not a good failure value (but what is?) */ | |
c906108c | 1266 | |
c3f6f71d JM |
1267 | #ifdef NEW_PROC_API |
1268 | return pi->prstatus.pr_lwp.pr_what; | |
1269 | #else | |
1270 | return pi->prstatus.pr_what; | |
c906108c | 1271 | #endif |
c3f6f71d | 1272 | } |
c906108c | 1273 | |
c3f6f71d JM |
1274 | #ifndef PIOCSSPCACT /* The following is not supported on OSF. */ |
1275 | /* | |
1276 | * Function: proc_nsysarg | |
1277 | * | |
1278 | * returns the pr_nsysarg field (number of args to the current syscall). | |
1279 | */ | |
1280 | ||
1281 | int | |
fba45db2 | 1282 | proc_nsysarg (procinfo *pi) |
c3f6f71d JM |
1283 | { |
1284 | if (!pi->status_valid) | |
1285 | if (!proc_get_status (pi)) | |
1286 | return 0; | |
19958708 | 1287 | |
c3f6f71d JM |
1288 | #ifdef NEW_PROC_API |
1289 | return pi->prstatus.pr_lwp.pr_nsysarg; | |
1290 | #else | |
1291 | return pi->prstatus.pr_nsysarg; | |
c906108c | 1292 | #endif |
c3f6f71d | 1293 | } |
c906108c | 1294 | |
c3f6f71d JM |
1295 | /* |
1296 | * Function: proc_sysargs | |
1297 | * | |
1298 | * returns the pr_sysarg field (pointer to the arguments of current syscall). | |
1299 | */ | |
c906108c | 1300 | |
c3f6f71d | 1301 | long * |
fba45db2 | 1302 | proc_sysargs (procinfo *pi) |
c3f6f71d JM |
1303 | { |
1304 | if (!pi->status_valid) | |
1305 | if (!proc_get_status (pi)) | |
1306 | return NULL; | |
19958708 | 1307 | |
c3f6f71d JM |
1308 | #ifdef NEW_PROC_API |
1309 | return (long *) &pi->prstatus.pr_lwp.pr_sysarg; | |
1310 | #else | |
1311 | return (long *) &pi->prstatus.pr_sysarg; | |
1312 | #endif | |
1313 | } | |
c906108c | 1314 | |
c3f6f71d JM |
1315 | /* |
1316 | * Function: proc_syscall | |
1317 | * | |
1318 | * returns the pr_syscall field (id of current syscall if we are in one). | |
1319 | */ | |
c906108c | 1320 | |
c3f6f71d | 1321 | int |
fba45db2 | 1322 | proc_syscall (procinfo *pi) |
c3f6f71d JM |
1323 | { |
1324 | if (!pi->status_valid) | |
1325 | if (!proc_get_status (pi)) | |
1326 | return 0; | |
19958708 | 1327 | |
c3f6f71d JM |
1328 | #ifdef NEW_PROC_API |
1329 | return pi->prstatus.pr_lwp.pr_syscall; | |
1330 | #else | |
1331 | return pi->prstatus.pr_syscall; | |
1332 | #endif | |
1333 | } | |
1334 | #endif /* PIOCSSPCACT */ | |
c906108c | 1335 | |
c3f6f71d JM |
1336 | /* |
1337 | * Function: proc_cursig: | |
1338 | * | |
1339 | * returns the pr_cursig field (current signal). | |
1340 | */ | |
c906108c | 1341 | |
c3f6f71d JM |
1342 | long |
1343 | proc_cursig (struct procinfo *pi) | |
1344 | { | |
1345 | if (!pi->status_valid) | |
1346 | if (!proc_get_status (pi)) | |
1347 | return 0; /* FIXME: not a good failure value (but what is?) */ | |
c906108c | 1348 | |
c3f6f71d JM |
1349 | #ifdef NEW_PROC_API |
1350 | return pi->prstatus.pr_lwp.pr_cursig; | |
1351 | #else | |
1352 | return pi->prstatus.pr_cursig; | |
1353 | #endif | |
1354 | } | |
c906108c | 1355 | |
c3f6f71d | 1356 | /* |
19958708 | 1357 | * Function: proc_modify_flag |
c3f6f71d | 1358 | * |
19958708 | 1359 | * === I appologize for the messiness of this function. |
c3f6f71d JM |
1360 | * === This is an area where the different versions of |
1361 | * === /proc are more inconsistent than usual. MVS | |
1362 | * | |
1363 | * Set or reset any of the following process flags: | |
1364 | * PR_FORK -- forked child will inherit trace flags | |
1365 | * PR_RLC -- traced process runs when last /proc file closed. | |
0d06e24b | 1366 | * PR_KLC -- traced process is killed when last /proc file closed. |
c3f6f71d JM |
1367 | * PR_ASYNC -- LWP's get to run/stop independently. |
1368 | * | |
1369 | * There are three methods for doing this function: | |
1370 | * 1) Newest: read/write [PCSET/PCRESET/PCUNSET] | |
1371 | * [Sol6, Sol7, UW] | |
1372 | * 2) Middle: PIOCSET/PIOCRESET | |
1373 | * [Irix, Sol5] | |
1374 | * 3) Oldest: PIOCSFORK/PIOCRFORK/PIOCSRLC/PIOCRRLC | |
1375 | * [OSF, Sol5] | |
1376 | * | |
1377 | * Note: Irix does not define PR_ASYNC. | |
0d06e24b JM |
1378 | * Note: OSF does not define PR_KLC. |
1379 | * Note: OSF is the only one that can ONLY use the oldest method. | |
c3f6f71d | 1380 | * |
19958708 | 1381 | * Arguments: |
c3f6f71d JM |
1382 | * pi -- the procinfo |
1383 | * flag -- one of PR_FORK, PR_RLC, or PR_ASYNC | |
1384 | * mode -- 1 for set, 0 for reset. | |
1385 | * | |
1386 | * Returns non-zero for success, zero for failure. | |
1387 | */ | |
c906108c | 1388 | |
c3f6f71d | 1389 | enum { FLAG_RESET, FLAG_SET }; |
c906108c | 1390 | |
c3f6f71d | 1391 | static int |
fba45db2 | 1392 | proc_modify_flag (procinfo *pi, long flag, long mode) |
c3f6f71d JM |
1393 | { |
1394 | long win = 0; /* default to fail */ | |
1395 | ||
19958708 RM |
1396 | /* |
1397 | * These operations affect the process as a whole, and applying | |
1398 | * them to an individual LWP has the same meaning as applying them | |
1399 | * to the main process. Therefore, if we're ever called with a | |
1400 | * pointer to an LWP's procinfo, let's substitute the process's | |
1401 | * procinfo and avoid opening the LWP's file descriptor | |
1402 | * unnecessarily. | |
c3f6f71d JM |
1403 | */ |
1404 | ||
1405 | if (pi->pid != 0) | |
1406 | pi = find_procinfo_or_die (pi->pid, 0); | |
1407 | ||
1408 | #ifdef NEW_PROC_API /* Newest method: UnixWare and newer Solarii */ | |
19958708 | 1409 | /* First normalize the PCUNSET/PCRESET command opcode |
c3f6f71d JM |
1410 | (which for no obvious reason has a different definition |
1411 | from one operating system to the next...) */ | |
1412 | #ifdef PCUNSET | |
1413 | #define GDBRESET PCUNSET | |
37de36c6 | 1414 | #else |
c3f6f71d JM |
1415 | #ifdef PCRESET |
1416 | #define GDBRESET PCRESET | |
37de36c6 | 1417 | #endif |
c906108c | 1418 | #endif |
c3f6f71d | 1419 | { |
37de36c6 | 1420 | procfs_ctl_t arg[2]; |
c906108c | 1421 | |
c3f6f71d JM |
1422 | if (mode == FLAG_SET) /* Set the flag (RLC, FORK, or ASYNC) */ |
1423 | arg[0] = PCSET; | |
1424 | else /* Reset the flag */ | |
1425 | arg[0] = GDBRESET; | |
c5aa993b | 1426 | |
c3f6f71d JM |
1427 | arg[1] = flag; |
1428 | win = (write (pi->ctl_fd, (void *) &arg, sizeof (arg)) == sizeof (arg)); | |
1429 | } | |
1430 | #else | |
1431 | #ifdef PIOCSET /* Irix/Sol5 method */ | |
1432 | if (mode == FLAG_SET) /* Set the flag (hopefully RLC, FORK, or ASYNC) */ | |
1433 | { | |
1434 | win = (ioctl (pi->ctl_fd, PIOCSET, &flag) >= 0); | |
1435 | } | |
1436 | else /* Reset the flag */ | |
1437 | { | |
1438 | win = (ioctl (pi->ctl_fd, PIOCRESET, &flag) >= 0); | |
1439 | } | |
c906108c | 1440 | |
c3f6f71d JM |
1441 | #else |
1442 | #ifdef PIOCSRLC /* Oldest method: OSF */ | |
1443 | switch (flag) { | |
1444 | case PR_RLC: | |
1445 | if (mode == FLAG_SET) /* Set run-on-last-close */ | |
1446 | { | |
1447 | win = (ioctl (pi->ctl_fd, PIOCSRLC, NULL) >= 0); | |
1448 | } | |
1449 | else /* Clear run-on-last-close */ | |
1450 | { | |
1451 | win = (ioctl (pi->ctl_fd, PIOCRRLC, NULL) >= 0); | |
1452 | } | |
1453 | break; | |
1454 | case PR_FORK: | |
1455 | if (mode == FLAG_SET) /* Set inherit-on-fork */ | |
1456 | { | |
1457 | win = (ioctl (pi->ctl_fd, PIOCSFORK, NULL) >= 0); | |
1458 | } | |
1459 | else /* Clear inherit-on-fork */ | |
1460 | { | |
1461 | win = (ioctl (pi->ctl_fd, PIOCRFORK, NULL) >= 0); | |
1462 | } | |
1463 | break; | |
1464 | default: | |
1465 | win = 0; /* fail -- unknown flag (can't do PR_ASYNC) */ | |
1466 | break; | |
1467 | } | |
1468 | #endif | |
1469 | #endif | |
1470 | #endif | |
1471 | #undef GDBRESET | |
1472 | /* The above operation renders the procinfo's cached pstatus obsolete. */ | |
1473 | pi->status_valid = 0; | |
c906108c | 1474 | |
c3f6f71d | 1475 | if (!win) |
8a3fe4f8 | 1476 | warning (_("procfs: modify_flag failed to turn %s %s"), |
c3f6f71d JM |
1477 | flag == PR_FORK ? "PR_FORK" : |
1478 | flag == PR_RLC ? "PR_RLC" : | |
1479 | #ifdef PR_ASYNC | |
1480 | flag == PR_ASYNC ? "PR_ASYNC" : | |
0d06e24b JM |
1481 | #endif |
1482 | #ifdef PR_KLC | |
1483 | flag == PR_KLC ? "PR_KLC" : | |
c3f6f71d JM |
1484 | #endif |
1485 | "<unknown flag>", | |
1486 | mode == FLAG_RESET ? "off" : "on"); | |
c906108c | 1487 | |
c3f6f71d JM |
1488 | return win; |
1489 | } | |
c906108c | 1490 | |
c3f6f71d JM |
1491 | /* |
1492 | * Function: proc_set_run_on_last_close | |
1493 | * | |
1494 | * Set the run_on_last_close flag. | |
1495 | * Process with all threads will become runnable | |
1496 | * when debugger closes all /proc fds. | |
1497 | * | |
1498 | * Returns non-zero for success, zero for failure. | |
c906108c SS |
1499 | */ |
1500 | ||
c3f6f71d | 1501 | int |
fba45db2 | 1502 | proc_set_run_on_last_close (procinfo *pi) |
c906108c | 1503 | { |
c3f6f71d JM |
1504 | return proc_modify_flag (pi, PR_RLC, FLAG_SET); |
1505 | } | |
c906108c | 1506 | |
c3f6f71d JM |
1507 | /* |
1508 | * Function: proc_unset_run_on_last_close | |
1509 | * | |
1510 | * Reset the run_on_last_close flag. | |
1511 | * Process will NOT become runnable | |
1512 | * when debugger closes its file handles. | |
1513 | * | |
1514 | * Returns non-zero for success, zero for failure. | |
1515 | */ | |
c906108c | 1516 | |
c3f6f71d | 1517 | int |
fba45db2 | 1518 | proc_unset_run_on_last_close (procinfo *pi) |
c3f6f71d JM |
1519 | { |
1520 | return proc_modify_flag (pi, PR_RLC, FLAG_RESET); | |
c906108c SS |
1521 | } |
1522 | ||
0d06e24b JM |
1523 | #ifdef PR_KLC |
1524 | /* | |
1525 | * Function: proc_set_kill_on_last_close | |
1526 | * | |
1527 | * Set the kill_on_last_close flag. | |
1528 | * Process with all threads will be killed when debugger | |
1529 | * closes all /proc fds (or debugger exits or dies). | |
1530 | * | |
1531 | * Returns non-zero for success, zero for failure. | |
1532 | */ | |
1533 | ||
1534 | int | |
fba45db2 | 1535 | proc_set_kill_on_last_close (procinfo *pi) |
0d06e24b JM |
1536 | { |
1537 | return proc_modify_flag (pi, PR_KLC, FLAG_SET); | |
1538 | } | |
1539 | ||
1540 | /* | |
1541 | * Function: proc_unset_kill_on_last_close | |
1542 | * | |
1543 | * Reset the kill_on_last_close flag. | |
19958708 | 1544 | * Process will NOT be killed when debugger |
0d06e24b JM |
1545 | * closes its file handles (or exits or dies). |
1546 | * | |
1547 | * Returns non-zero for success, zero for failure. | |
1548 | */ | |
1549 | ||
1550 | int | |
fba45db2 | 1551 | proc_unset_kill_on_last_close (procinfo *pi) |
0d06e24b JM |
1552 | { |
1553 | return proc_modify_flag (pi, PR_KLC, FLAG_RESET); | |
1554 | } | |
1555 | #endif /* PR_KLC */ | |
1556 | ||
c906108c | 1557 | /* |
c3f6f71d JM |
1558 | * Function: proc_set_inherit_on_fork |
1559 | * | |
1560 | * Set inherit_on_fork flag. | |
1561 | * If the process forks a child while we are registered for events | |
1562 | * in the parent, then we will also recieve events from the child. | |
1563 | * | |
1564 | * Returns non-zero for success, zero for failure. | |
1565 | */ | |
c906108c | 1566 | |
c3f6f71d | 1567 | int |
fba45db2 | 1568 | proc_set_inherit_on_fork (procinfo *pi) |
c3f6f71d JM |
1569 | { |
1570 | return proc_modify_flag (pi, PR_FORK, FLAG_SET); | |
1571 | } | |
c5aa993b | 1572 | |
c3f6f71d JM |
1573 | /* |
1574 | * Function: proc_unset_inherit_on_fork | |
1575 | * | |
1576 | * Reset inherit_on_fork flag. | |
1577 | * If the process forks a child while we are registered for events | |
1578 | * in the parent, then we will NOT recieve events from the child. | |
1579 | * | |
1580 | * Returns non-zero for success, zero for failure. | |
1581 | */ | |
c906108c | 1582 | |
c3f6f71d | 1583 | int |
fba45db2 | 1584 | proc_unset_inherit_on_fork (procinfo *pi) |
c3f6f71d JM |
1585 | { |
1586 | return proc_modify_flag (pi, PR_FORK, FLAG_RESET); | |
1587 | } | |
c906108c | 1588 | |
c3f6f71d JM |
1589 | #ifdef PR_ASYNC |
1590 | /* | |
1591 | * Function: proc_set_async | |
1592 | * | |
1593 | * Set PR_ASYNC flag. | |
19958708 | 1594 | * If one LWP stops because of a debug event (signal etc.), |
c3f6f71d JM |
1595 | * the remaining LWPs will continue to run. |
1596 | * | |
1597 | * Returns non-zero for success, zero for failure. | |
1598 | */ | |
c906108c | 1599 | |
c3f6f71d | 1600 | int |
fba45db2 | 1601 | proc_set_async (procinfo *pi) |
c3f6f71d JM |
1602 | { |
1603 | return proc_modify_flag (pi, PR_ASYNC, FLAG_SET); | |
1604 | } | |
c906108c | 1605 | |
c3f6f71d JM |
1606 | /* |
1607 | * Function: proc_unset_async | |
1608 | * | |
1609 | * Reset PR_ASYNC flag. | |
1610 | * If one LWP stops because of a debug event (signal etc.), | |
1611 | * then all other LWPs will stop as well. | |
1612 | * | |
1613 | * Returns non-zero for success, zero for failure. | |
c906108c SS |
1614 | */ |
1615 | ||
c3f6f71d | 1616 | int |
fba45db2 | 1617 | proc_unset_async (procinfo *pi) |
c3f6f71d JM |
1618 | { |
1619 | return proc_modify_flag (pi, PR_ASYNC, FLAG_RESET); | |
1620 | } | |
1621 | #endif /* PR_ASYNC */ | |
c906108c SS |
1622 | |
1623 | /* | |
c3f6f71d JM |
1624 | * Function: proc_stop_process |
1625 | * | |
1626 | * Request the process/LWP to stop. Does not wait. | |
19958708 | 1627 | * Returns non-zero for success, zero for failure. |
c3f6f71d | 1628 | */ |
c906108c | 1629 | |
c3f6f71d | 1630 | int |
fba45db2 | 1631 | proc_stop_process (procinfo *pi) |
c3f6f71d JM |
1632 | { |
1633 | int win; | |
c906108c | 1634 | |
c3f6f71d JM |
1635 | /* |
1636 | * We might conceivably apply this operation to an LWP, and | |
1637 | * the LWP's ctl file descriptor might not be open. | |
1638 | */ | |
c906108c | 1639 | |
c3f6f71d JM |
1640 | if (pi->ctl_fd == 0 && |
1641 | open_procinfo_files (pi, FD_CTL) == 0) | |
1642 | return 0; | |
1643 | else | |
1644 | { | |
1645 | #ifdef NEW_PROC_API | |
37de36c6 | 1646 | procfs_ctl_t cmd = PCSTOP; |
c3f6f71d JM |
1647 | win = (write (pi->ctl_fd, (char *) &cmd, sizeof (cmd)) == sizeof (cmd)); |
1648 | #else /* ioctl method */ | |
1649 | win = (ioctl (pi->ctl_fd, PIOCSTOP, &pi->prstatus) >= 0); | |
1650 | /* Note: the call also reads the prstatus. */ | |
1651 | if (win) | |
1652 | { | |
1653 | pi->status_valid = 1; | |
19958708 | 1654 | PROC_PRETTYFPRINT_STATUS (proc_flags (pi), |
c3f6f71d | 1655 | proc_why (pi), |
19958708 | 1656 | proc_what (pi), |
c3f6f71d JM |
1657 | proc_get_current_thread (pi)); |
1658 | } | |
1659 | #endif | |
1660 | } | |
c906108c | 1661 | |
c3f6f71d JM |
1662 | return win; |
1663 | } | |
c5aa993b | 1664 | |
c3f6f71d JM |
1665 | /* |
1666 | * Function: proc_wait_for_stop | |
1667 | * | |
1668 | * Wait for the process or LWP to stop (block until it does). | |
19958708 | 1669 | * Returns non-zero for success, zero for failure. |
c906108c SS |
1670 | */ |
1671 | ||
c3f6f71d | 1672 | int |
fba45db2 | 1673 | proc_wait_for_stop (procinfo *pi) |
c906108c | 1674 | { |
c3f6f71d JM |
1675 | int win; |
1676 | ||
1677 | /* | |
1678 | * We should never have to apply this operation to any procinfo | |
1679 | * except the one for the main process. If that ever changes | |
19958708 | 1680 | * for any reason, then take out the following clause and |
c3f6f71d JM |
1681 | * replace it with one that makes sure the ctl_fd is open. |
1682 | */ | |
19958708 | 1683 | |
c3f6f71d JM |
1684 | if (pi->tid != 0) |
1685 | pi = find_procinfo_or_die (pi->pid, 0); | |
1686 | ||
1687 | #ifdef NEW_PROC_API | |
1688 | { | |
37de36c6 | 1689 | procfs_ctl_t cmd = PCWSTOP; |
c3f6f71d JM |
1690 | win = (write (pi->ctl_fd, (char *) &cmd, sizeof (cmd)) == sizeof (cmd)); |
1691 | /* We been runnin' and we stopped -- need to update status. */ | |
1692 | pi->status_valid = 0; | |
1693 | } | |
1694 | #else /* ioctl method */ | |
1695 | win = (ioctl (pi->ctl_fd, PIOCWSTOP, &pi->prstatus) >= 0); | |
1696 | /* Above call also refreshes the prstatus. */ | |
1697 | if (win) | |
1698 | { | |
1699 | pi->status_valid = 1; | |
19958708 | 1700 | PROC_PRETTYFPRINT_STATUS (proc_flags (pi), |
c3f6f71d | 1701 | proc_why (pi), |
19958708 | 1702 | proc_what (pi), |
c3f6f71d JM |
1703 | proc_get_current_thread (pi)); |
1704 | } | |
c906108c SS |
1705 | #endif |
1706 | ||
c3f6f71d | 1707 | return win; |
c906108c SS |
1708 | } |
1709 | ||
1710 | /* | |
c3f6f71d JM |
1711 | * Function: proc_run_process |
1712 | * | |
1713 | * Make the process or LWP runnable. | |
1714 | * Options (not all are implemented): | |
1715 | * - single-step | |
1716 | * - clear current fault | |
1717 | * - clear current signal | |
1718 | * - abort the current system call | |
1719 | * - stop as soon as finished with system call | |
1720 | * - (ioctl): set traced signal set | |
1721 | * - (ioctl): set held signal set | |
1722 | * - (ioctl): set traced fault set | |
1723 | * - (ioctl): set start pc (vaddr) | |
1724 | * Always clear the current fault. | |
1725 | * Clear the current signal if 'signo' is zero. | |
1726 | * | |
1727 | * Arguments: | |
1728 | * pi the process or LWP to operate on. | |
1729 | * step if true, set the process or LWP to trap after one instr. | |
1730 | * signo if zero, clear the current signal if any. | |
1731 | * if non-zero, set the current signal to this one. | |
1732 | * | |
19958708 | 1733 | * Returns non-zero for success, zero for failure. |
c3f6f71d JM |
1734 | */ |
1735 | ||
1736 | int | |
fba45db2 | 1737 | proc_run_process (procinfo *pi, int step, int signo) |
c3f6f71d JM |
1738 | { |
1739 | int win; | |
1740 | int runflags; | |
1741 | ||
1742 | /* | |
1743 | * We will probably have to apply this operation to individual threads, | |
1744 | * so make sure the control file descriptor is open. | |
1745 | */ | |
19958708 | 1746 | |
c3f6f71d JM |
1747 | if (pi->ctl_fd == 0 && |
1748 | open_procinfo_files (pi, FD_CTL) == 0) | |
1749 | { | |
1750 | return 0; | |
1751 | } | |
c906108c | 1752 | |
c3f6f71d JM |
1753 | runflags = PRCFAULT; /* always clear current fault */ |
1754 | if (step) | |
1755 | runflags |= PRSTEP; | |
1756 | if (signo == 0) | |
1757 | runflags |= PRCSIG; | |
1758 | else if (signo != -1) /* -1 means do nothing W.R.T. signals */ | |
1759 | proc_set_current_signal (pi, signo); | |
c5aa993b | 1760 | |
c3f6f71d JM |
1761 | #ifdef NEW_PROC_API |
1762 | { | |
37de36c6 | 1763 | procfs_ctl_t cmd[2]; |
c906108c | 1764 | |
c3f6f71d JM |
1765 | cmd[0] = PCRUN; |
1766 | cmd[1] = runflags; | |
1767 | win = (write (pi->ctl_fd, (char *) &cmd, sizeof (cmd)) == sizeof (cmd)); | |
1768 | } | |
1769 | #else /* ioctl method */ | |
1770 | { | |
1771 | prrun_t prrun; | |
c906108c | 1772 | |
c3f6f71d JM |
1773 | memset (&prrun, 0, sizeof (prrun)); |
1774 | prrun.pr_flags = runflags; | |
1775 | win = (ioctl (pi->ctl_fd, PIOCRUN, &prrun) >= 0); | |
1776 | } | |
1777 | #endif | |
c906108c | 1778 | |
c3f6f71d JM |
1779 | return win; |
1780 | } | |
c906108c | 1781 | |
c3f6f71d JM |
1782 | /* |
1783 | * Function: proc_set_traced_signals | |
1784 | * | |
1785 | * Register to trace signals in the process or LWP. | |
19958708 | 1786 | * Returns non-zero for success, zero for failure. |
c906108c SS |
1787 | */ |
1788 | ||
c3f6f71d | 1789 | int |
37de36c6 | 1790 | proc_set_traced_signals (procinfo *pi, gdb_sigset_t *sigset) |
c906108c | 1791 | { |
c3f6f71d JM |
1792 | int win; |
1793 | ||
1794 | /* | |
1795 | * We should never have to apply this operation to any procinfo | |
1796 | * except the one for the main process. If that ever changes | |
19958708 | 1797 | * for any reason, then take out the following clause and |
c3f6f71d JM |
1798 | * replace it with one that makes sure the ctl_fd is open. |
1799 | */ | |
19958708 | 1800 | |
c3f6f71d JM |
1801 | if (pi->tid != 0) |
1802 | pi = find_procinfo_or_die (pi->pid, 0); | |
1803 | ||
1804 | #ifdef NEW_PROC_API | |
1805 | { | |
1806 | struct { | |
37de36c6 | 1807 | procfs_ctl_t cmd; |
c3f6f71d | 1808 | /* Use char array to avoid alignment issues. */ |
37de36c6 | 1809 | char sigset[sizeof (gdb_sigset_t)]; |
c3f6f71d | 1810 | } arg; |
c906108c | 1811 | |
c3f6f71d | 1812 | arg.cmd = PCSTRACE; |
37de36c6 | 1813 | memcpy (&arg.sigset, sigset, sizeof (gdb_sigset_t)); |
c906108c | 1814 | |
c3f6f71d JM |
1815 | win = (write (pi->ctl_fd, (char *) &arg, sizeof (arg)) == sizeof (arg)); |
1816 | } | |
1817 | #else /* ioctl method */ | |
1818 | win = (ioctl (pi->ctl_fd, PIOCSTRACE, sigset) >= 0); | |
1819 | #endif | |
1820 | /* The above operation renders the procinfo's cached pstatus obsolete. */ | |
1821 | pi->status_valid = 0; | |
c906108c | 1822 | |
c3f6f71d | 1823 | if (!win) |
8a3fe4f8 | 1824 | warning (_("procfs: set_traced_signals failed")); |
c3f6f71d | 1825 | return win; |
c906108c SS |
1826 | } |
1827 | ||
1828 | /* | |
c3f6f71d JM |
1829 | * Function: proc_set_traced_faults |
1830 | * | |
1831 | * Register to trace hardware faults in the process or LWP. | |
19958708 | 1832 | * Returns non-zero for success, zero for failure. |
c3f6f71d | 1833 | */ |
c906108c | 1834 | |
c3f6f71d | 1835 | int |
fba45db2 | 1836 | proc_set_traced_faults (procinfo *pi, fltset_t *fltset) |
c3f6f71d JM |
1837 | { |
1838 | int win; | |
1839 | ||
1840 | /* | |
1841 | * We should never have to apply this operation to any procinfo | |
1842 | * except the one for the main process. If that ever changes | |
19958708 | 1843 | * for any reason, then take out the following clause and |
c3f6f71d JM |
1844 | * replace it with one that makes sure the ctl_fd is open. |
1845 | */ | |
19958708 | 1846 | |
c3f6f71d JM |
1847 | if (pi->tid != 0) |
1848 | pi = find_procinfo_or_die (pi->pid, 0); | |
1849 | ||
1850 | #ifdef NEW_PROC_API | |
1851 | { | |
1852 | struct { | |
37de36c6 | 1853 | procfs_ctl_t cmd; |
c3f6f71d JM |
1854 | /* Use char array to avoid alignment issues. */ |
1855 | char fltset[sizeof (fltset_t)]; | |
1856 | } arg; | |
c906108c | 1857 | |
c3f6f71d JM |
1858 | arg.cmd = PCSFAULT; |
1859 | memcpy (&arg.fltset, fltset, sizeof (fltset_t)); | |
c906108c | 1860 | |
c3f6f71d JM |
1861 | win = (write (pi->ctl_fd, (char *) &arg, sizeof (arg)) == sizeof (arg)); |
1862 | } | |
1863 | #else /* ioctl method */ | |
1864 | win = (ioctl (pi->ctl_fd, PIOCSFAULT, fltset) >= 0); | |
1865 | #endif | |
1866 | /* The above operation renders the procinfo's cached pstatus obsolete. */ | |
1867 | pi->status_valid = 0; | |
c906108c | 1868 | |
c3f6f71d JM |
1869 | return win; |
1870 | } | |
c5aa993b | 1871 | |
c3f6f71d JM |
1872 | /* |
1873 | * Function: proc_set_traced_sysentry | |
1874 | * | |
1875 | * Register to trace entry to system calls in the process or LWP. | |
19958708 | 1876 | * Returns non-zero for success, zero for failure. |
c906108c SS |
1877 | */ |
1878 | ||
c3f6f71d | 1879 | int |
fba45db2 | 1880 | proc_set_traced_sysentry (procinfo *pi, sysset_t *sysset) |
c906108c | 1881 | { |
c3f6f71d JM |
1882 | int win; |
1883 | ||
1884 | /* | |
1885 | * We should never have to apply this operation to any procinfo | |
1886 | * except the one for the main process. If that ever changes | |
19958708 | 1887 | * for any reason, then take out the following clause and |
c3f6f71d JM |
1888 | * replace it with one that makes sure the ctl_fd is open. |
1889 | */ | |
19958708 | 1890 | |
c3f6f71d JM |
1891 | if (pi->tid != 0) |
1892 | pi = find_procinfo_or_die (pi->pid, 0); | |
1893 | ||
1894 | #ifdef NEW_PROC_API | |
1895 | { | |
37de36c6 KB |
1896 | struct gdb_proc_ctl_pcsentry { |
1897 | procfs_ctl_t cmd; | |
c3f6f71d JM |
1898 | /* Use char array to avoid alignment issues. */ |
1899 | char sysset[sizeof (sysset_t)]; | |
37de36c6 KB |
1900 | } *argp; |
1901 | int argp_size = sizeof (struct gdb_proc_ctl_pcsentry) | |
1902 | - sizeof (sysset_t) | |
1903 | + sysset_t_size (pi); | |
c3f6f71d | 1904 | |
37de36c6 | 1905 | argp = xmalloc (argp_size); |
c3f6f71d | 1906 | |
37de36c6 KB |
1907 | argp->cmd = PCSENTRY; |
1908 | memcpy (&argp->sysset, sysset, sysset_t_size (pi)); | |
1909 | ||
1910 | win = (write (pi->ctl_fd, (char *) argp, argp_size) == argp_size); | |
1911 | xfree (argp); | |
c3f6f71d JM |
1912 | } |
1913 | #else /* ioctl method */ | |
1914 | win = (ioctl (pi->ctl_fd, PIOCSENTRY, sysset) >= 0); | |
1915 | #endif | |
1916 | /* The above operation renders the procinfo's cached pstatus obsolete. */ | |
1917 | pi->status_valid = 0; | |
19958708 | 1918 | |
c3f6f71d | 1919 | return win; |
c906108c SS |
1920 | } |
1921 | ||
1922 | /* | |
c3f6f71d JM |
1923 | * Function: proc_set_traced_sysexit |
1924 | * | |
1925 | * Register to trace exit from system calls in the process or LWP. | |
19958708 | 1926 | * Returns non-zero for success, zero for failure. |
c3f6f71d | 1927 | */ |
c906108c | 1928 | |
c3f6f71d | 1929 | int |
fba45db2 | 1930 | proc_set_traced_sysexit (procinfo *pi, sysset_t *sysset) |
c3f6f71d JM |
1931 | { |
1932 | int win; | |
1933 | ||
1934 | /* | |
1935 | * We should never have to apply this operation to any procinfo | |
1936 | * except the one for the main process. If that ever changes | |
19958708 | 1937 | * for any reason, then take out the following clause and |
c3f6f71d JM |
1938 | * replace it with one that makes sure the ctl_fd is open. |
1939 | */ | |
19958708 | 1940 | |
c3f6f71d JM |
1941 | if (pi->tid != 0) |
1942 | pi = find_procinfo_or_die (pi->pid, 0); | |
1943 | ||
1944 | #ifdef NEW_PROC_API | |
1945 | { | |
37de36c6 KB |
1946 | struct gdb_proc_ctl_pcsexit { |
1947 | procfs_ctl_t cmd; | |
c3f6f71d JM |
1948 | /* Use char array to avoid alignment issues. */ |
1949 | char sysset[sizeof (sysset_t)]; | |
37de36c6 KB |
1950 | } *argp; |
1951 | int argp_size = sizeof (struct gdb_proc_ctl_pcsexit) | |
1952 | - sizeof (sysset_t) | |
1953 | + sysset_t_size (pi); | |
c906108c | 1954 | |
37de36c6 | 1955 | argp = xmalloc (argp_size); |
c906108c | 1956 | |
37de36c6 KB |
1957 | argp->cmd = PCSEXIT; |
1958 | memcpy (&argp->sysset, sysset, sysset_t_size (pi)); | |
1959 | ||
1960 | win = (write (pi->ctl_fd, (char *) argp, argp_size) == argp_size); | |
1961 | xfree (argp); | |
c3f6f71d JM |
1962 | } |
1963 | #else /* ioctl method */ | |
1964 | win = (ioctl (pi->ctl_fd, PIOCSEXIT, sysset) >= 0); | |
1965 | #endif | |
1966 | /* The above operation renders the procinfo's cached pstatus obsolete. */ | |
1967 | pi->status_valid = 0; | |
c906108c | 1968 | |
c3f6f71d JM |
1969 | return win; |
1970 | } | |
c906108c | 1971 | |
c3f6f71d JM |
1972 | /* |
1973 | * Function: proc_set_held_signals | |
1974 | * | |
1975 | * Specify the set of blocked / held signals in the process or LWP. | |
19958708 | 1976 | * Returns non-zero for success, zero for failure. |
c906108c SS |
1977 | */ |
1978 | ||
c3f6f71d | 1979 | int |
37de36c6 | 1980 | proc_set_held_signals (procinfo *pi, gdb_sigset_t *sighold) |
c906108c | 1981 | { |
c3f6f71d JM |
1982 | int win; |
1983 | ||
1984 | /* | |
1985 | * We should never have to apply this operation to any procinfo | |
1986 | * except the one for the main process. If that ever changes | |
19958708 | 1987 | * for any reason, then take out the following clause and |
c3f6f71d JM |
1988 | * replace it with one that makes sure the ctl_fd is open. |
1989 | */ | |
19958708 | 1990 | |
c3f6f71d JM |
1991 | if (pi->tid != 0) |
1992 | pi = find_procinfo_or_die (pi->pid, 0); | |
1993 | ||
1994 | #ifdef NEW_PROC_API | |
1995 | { | |
1996 | struct { | |
37de36c6 | 1997 | procfs_ctl_t cmd; |
c3f6f71d | 1998 | /* Use char array to avoid alignment issues. */ |
37de36c6 | 1999 | char hold[sizeof (gdb_sigset_t)]; |
c3f6f71d JM |
2000 | } arg; |
2001 | ||
2002 | arg.cmd = PCSHOLD; | |
37de36c6 | 2003 | memcpy (&arg.hold, sighold, sizeof (gdb_sigset_t)); |
c3f6f71d JM |
2004 | win = (write (pi->ctl_fd, (void *) &arg, sizeof (arg)) == sizeof (arg)); |
2005 | } | |
c906108c | 2006 | #else |
c3f6f71d | 2007 | win = (ioctl (pi->ctl_fd, PIOCSHOLD, sighold) >= 0); |
c906108c | 2008 | #endif |
c3f6f71d JM |
2009 | /* The above operation renders the procinfo's cached pstatus obsolete. */ |
2010 | pi->status_valid = 0; | |
2011 | ||
2012 | return win; | |
c906108c SS |
2013 | } |
2014 | ||
2015 | /* | |
c3f6f71d JM |
2016 | * Function: proc_get_pending_signals |
2017 | * | |
2018 | * returns the set of signals that are pending in the process or LWP. | |
2019 | * Will also copy the sigset if 'save' is non-zero. | |
2020 | */ | |
c906108c | 2021 | |
37de36c6 KB |
2022 | gdb_sigset_t * |
2023 | proc_get_pending_signals (procinfo *pi, gdb_sigset_t *save) | |
c3f6f71d | 2024 | { |
37de36c6 | 2025 | gdb_sigset_t *ret = NULL; |
c3f6f71d JM |
2026 | |
2027 | /* | |
2028 | * We should never have to apply this operation to any procinfo | |
2029 | * except the one for the main process. If that ever changes | |
19958708 | 2030 | * for any reason, then take out the following clause and |
c3f6f71d JM |
2031 | * replace it with one that makes sure the ctl_fd is open. |
2032 | */ | |
19958708 | 2033 | |
c3f6f71d JM |
2034 | if (pi->tid != 0) |
2035 | pi = find_procinfo_or_die (pi->pid, 0); | |
2036 | ||
2037 | if (!pi->status_valid) | |
2038 | if (!proc_get_status (pi)) | |
2039 | return NULL; | |
2040 | ||
2041 | #ifdef NEW_PROC_API | |
2042 | ret = &pi->prstatus.pr_lwp.pr_lwppend; | |
2043 | #else | |
2044 | ret = &pi->prstatus.pr_sigpend; | |
2045 | #endif | |
2046 | if (save && ret) | |
37de36c6 | 2047 | memcpy (save, ret, sizeof (gdb_sigset_t)); |
c906108c | 2048 | |
c3f6f71d JM |
2049 | return ret; |
2050 | } | |
c906108c | 2051 | |
c3f6f71d JM |
2052 | /* |
2053 | * Function: proc_get_signal_actions | |
2054 | * | |
2055 | * returns the set of signal actions. | |
2056 | * Will also copy the sigactionset if 'save' is non-zero. | |
2057 | */ | |
c906108c | 2058 | |
37de36c6 KB |
2059 | gdb_sigaction_t * |
2060 | proc_get_signal_actions (procinfo *pi, gdb_sigaction_t *save) | |
c3f6f71d | 2061 | { |
37de36c6 | 2062 | gdb_sigaction_t *ret = NULL; |
c3f6f71d JM |
2063 | |
2064 | /* | |
2065 | * We should never have to apply this operation to any procinfo | |
2066 | * except the one for the main process. If that ever changes | |
19958708 | 2067 | * for any reason, then take out the following clause and |
c3f6f71d JM |
2068 | * replace it with one that makes sure the ctl_fd is open. |
2069 | */ | |
19958708 | 2070 | |
c3f6f71d JM |
2071 | if (pi->tid != 0) |
2072 | pi = find_procinfo_or_die (pi->pid, 0); | |
2073 | ||
2074 | if (!pi->status_valid) | |
2075 | if (!proc_get_status (pi)) | |
2076 | return NULL; | |
2077 | ||
2078 | #ifdef NEW_PROC_API | |
2079 | ret = &pi->prstatus.pr_lwp.pr_action; | |
2080 | #else | |
2081 | ret = &pi->prstatus.pr_action; | |
2082 | #endif | |
2083 | if (save && ret) | |
37de36c6 | 2084 | memcpy (save, ret, sizeof (gdb_sigaction_t)); |
c906108c | 2085 | |
c3f6f71d JM |
2086 | return ret; |
2087 | } | |
c5aa993b | 2088 | |
c3f6f71d JM |
2089 | /* |
2090 | * Function: proc_get_held_signals | |
2091 | * | |
2092 | * returns the set of signals that are held / blocked. | |
2093 | * Will also copy the sigset if 'save' is non-zero. | |
c906108c SS |
2094 | */ |
2095 | ||
37de36c6 KB |
2096 | gdb_sigset_t * |
2097 | proc_get_held_signals (procinfo *pi, gdb_sigset_t *save) | |
c906108c | 2098 | { |
37de36c6 | 2099 | gdb_sigset_t *ret = NULL; |
c3f6f71d JM |
2100 | |
2101 | /* | |
2102 | * We should never have to apply this operation to any procinfo | |
2103 | * except the one for the main process. If that ever changes | |
19958708 | 2104 | * for any reason, then take out the following clause and |
c3f6f71d JM |
2105 | * replace it with one that makes sure the ctl_fd is open. |
2106 | */ | |
19958708 | 2107 | |
c3f6f71d JM |
2108 | if (pi->tid != 0) |
2109 | pi = find_procinfo_or_die (pi->pid, 0); | |
2110 | ||
2111 | #ifdef NEW_PROC_API | |
2112 | if (!pi->status_valid) | |
2113 | if (!proc_get_status (pi)) | |
2114 | return NULL; | |
2115 | ||
2116 | #ifdef UNIXWARE | |
2117 | ret = &pi->prstatus.pr_lwp.pr_context.uc_sigmask; | |
c906108c | 2118 | #else |
c3f6f71d JM |
2119 | ret = &pi->prstatus.pr_lwp.pr_lwphold; |
2120 | #endif /* UNIXWARE */ | |
2121 | #else /* not NEW_PROC_API */ | |
2122 | { | |
37de36c6 | 2123 | static gdb_sigset_t sigheld; |
c3f6f71d JM |
2124 | |
2125 | if (ioctl (pi->ctl_fd, PIOCGHOLD, &sigheld) >= 0) | |
2126 | ret = &sigheld; | |
2127 | } | |
2128 | #endif /* NEW_PROC_API */ | |
2129 | if (save && ret) | |
37de36c6 | 2130 | memcpy (save, ret, sizeof (gdb_sigset_t)); |
c3f6f71d JM |
2131 | |
2132 | return ret; | |
c906108c SS |
2133 | } |
2134 | ||
c3f6f71d JM |
2135 | /* |
2136 | * Function: proc_get_traced_signals | |
2137 | * | |
2138 | * returns the set of signals that are traced / debugged. | |
2139 | * Will also copy the sigset if 'save' is non-zero. | |
2140 | */ | |
2141 | ||
37de36c6 KB |
2142 | gdb_sigset_t * |
2143 | proc_get_traced_signals (procinfo *pi, gdb_sigset_t *save) | |
c906108c | 2144 | { |
37de36c6 | 2145 | gdb_sigset_t *ret = NULL; |
c3f6f71d JM |
2146 | |
2147 | /* | |
2148 | * We should never have to apply this operation to any procinfo | |
2149 | * except the one for the main process. If that ever changes | |
19958708 | 2150 | * for any reason, then take out the following clause and |
c3f6f71d JM |
2151 | * replace it with one that makes sure the ctl_fd is open. |
2152 | */ | |
19958708 | 2153 | |
c3f6f71d JM |
2154 | if (pi->tid != 0) |
2155 | pi = find_procinfo_or_die (pi->pid, 0); | |
2156 | ||
2157 | #ifdef NEW_PROC_API | |
2158 | if (!pi->status_valid) | |
2159 | if (!proc_get_status (pi)) | |
2160 | return NULL; | |
2161 | ||
2162 | ret = &pi->prstatus.pr_sigtrace; | |
2163 | #else | |
2164 | { | |
37de36c6 | 2165 | static gdb_sigset_t sigtrace; |
c3f6f71d JM |
2166 | |
2167 | if (ioctl (pi->ctl_fd, PIOCGTRACE, &sigtrace) >= 0) | |
2168 | ret = &sigtrace; | |
2169 | } | |
c906108c | 2170 | #endif |
c3f6f71d | 2171 | if (save && ret) |
37de36c6 | 2172 | memcpy (save, ret, sizeof (gdb_sigset_t)); |
c906108c | 2173 | |
c3f6f71d JM |
2174 | return ret; |
2175 | } | |
c906108c | 2176 | |
c3f6f71d JM |
2177 | /* |
2178 | * Function: proc_trace_signal | |
2179 | * | |
2180 | * Add 'signo' to the set of signals that are traced. | |
2181 | * Returns non-zero for success, zero for failure. | |
2182 | */ | |
c906108c | 2183 | |
c3f6f71d | 2184 | int |
fba45db2 | 2185 | proc_trace_signal (procinfo *pi, int signo) |
c3f6f71d | 2186 | { |
37de36c6 | 2187 | gdb_sigset_t temp; |
c3f6f71d JM |
2188 | |
2189 | /* | |
2190 | * We should never have to apply this operation to any procinfo | |
2191 | * except the one for the main process. If that ever changes | |
19958708 | 2192 | * for any reason, then take out the following clause and |
c3f6f71d JM |
2193 | * replace it with one that makes sure the ctl_fd is open. |
2194 | */ | |
19958708 | 2195 | |
c3f6f71d JM |
2196 | if (pi->tid != 0) |
2197 | pi = find_procinfo_or_die (pi->pid, 0); | |
2198 | ||
2199 | if (pi) | |
c906108c | 2200 | { |
c3f6f71d | 2201 | if (proc_get_traced_signals (pi, &temp)) |
c906108c | 2202 | { |
c3f6f71d JM |
2203 | praddset (&temp, signo); |
2204 | return proc_set_traced_signals (pi, &temp); | |
c906108c SS |
2205 | } |
2206 | } | |
c5aa993b | 2207 | |
c3f6f71d JM |
2208 | return 0; /* failure */ |
2209 | } | |
c906108c | 2210 | |
c3f6f71d JM |
2211 | /* |
2212 | * Function: proc_ignore_signal | |
2213 | * | |
2214 | * Remove 'signo' from the set of signals that are traced. | |
2215 | * Returns non-zero for success, zero for failure. | |
2216 | */ | |
c906108c | 2217 | |
c3f6f71d | 2218 | int |
fba45db2 | 2219 | proc_ignore_signal (procinfo *pi, int signo) |
c3f6f71d | 2220 | { |
37de36c6 | 2221 | gdb_sigset_t temp; |
c3f6f71d JM |
2222 | |
2223 | /* | |
2224 | * We should never have to apply this operation to any procinfo | |
2225 | * except the one for the main process. If that ever changes | |
19958708 | 2226 | * for any reason, then take out the following clause and |
c3f6f71d JM |
2227 | * replace it with one that makes sure the ctl_fd is open. |
2228 | */ | |
19958708 | 2229 | |
c3f6f71d JM |
2230 | if (pi->tid != 0) |
2231 | pi = find_procinfo_or_die (pi->pid, 0); | |
2232 | ||
2233 | if (pi) | |
c906108c | 2234 | { |
c3f6f71d | 2235 | if (proc_get_traced_signals (pi, &temp)) |
c906108c | 2236 | { |
c3f6f71d JM |
2237 | prdelset (&temp, signo); |
2238 | return proc_set_traced_signals (pi, &temp); | |
c906108c | 2239 | } |
c906108c | 2240 | } |
c906108c | 2241 | |
c3f6f71d | 2242 | return 0; /* failure */ |
c906108c SS |
2243 | } |
2244 | ||
2245 | /* | |
c3f6f71d JM |
2246 | * Function: proc_get_traced_faults |
2247 | * | |
2248 | * returns the set of hardware faults that are traced /debugged. | |
2249 | * Will also copy the faultset if 'save' is non-zero. | |
2250 | */ | |
2251 | ||
2252 | fltset_t * | |
fba45db2 | 2253 | proc_get_traced_faults (procinfo *pi, fltset_t *save) |
c3f6f71d JM |
2254 | { |
2255 | fltset_t *ret = NULL; | |
2256 | ||
2257 | /* | |
2258 | * We should never have to apply this operation to any procinfo | |
2259 | * except the one for the main process. If that ever changes | |
19958708 | 2260 | * for any reason, then take out the following clause and |
c3f6f71d JM |
2261 | * replace it with one that makes sure the ctl_fd is open. |
2262 | */ | |
19958708 | 2263 | |
c3f6f71d JM |
2264 | if (pi->tid != 0) |
2265 | pi = find_procinfo_or_die (pi->pid, 0); | |
2266 | ||
2267 | #ifdef NEW_PROC_API | |
2268 | if (!pi->status_valid) | |
2269 | if (!proc_get_status (pi)) | |
2270 | return NULL; | |
2271 | ||
2272 | ret = &pi->prstatus.pr_flttrace; | |
2273 | #else | |
2274 | { | |
2275 | static fltset_t flttrace; | |
2276 | ||
2277 | if (ioctl (pi->ctl_fd, PIOCGFAULT, &flttrace) >= 0) | |
2278 | ret = &flttrace; | |
2279 | } | |
2280 | #endif | |
2281 | if (save && ret) | |
2282 | memcpy (save, ret, sizeof (fltset_t)); | |
c906108c | 2283 | |
c3f6f71d JM |
2284 | return ret; |
2285 | } | |
c906108c | 2286 | |
c3f6f71d JM |
2287 | /* |
2288 | * Function: proc_get_traced_sysentry | |
2289 | * | |
2290 | * returns the set of syscalls that are traced /debugged on entry. | |
2291 | * Will also copy the syscall set if 'save' is non-zero. | |
2292 | */ | |
c906108c | 2293 | |
c3f6f71d | 2294 | sysset_t * |
fba45db2 | 2295 | proc_get_traced_sysentry (procinfo *pi, sysset_t *save) |
c3f6f71d JM |
2296 | { |
2297 | sysset_t *ret = NULL; | |
2298 | ||
2299 | /* | |
2300 | * We should never have to apply this operation to any procinfo | |
2301 | * except the one for the main process. If that ever changes | |
19958708 | 2302 | * for any reason, then take out the following clause and |
c3f6f71d JM |
2303 | * replace it with one that makes sure the ctl_fd is open. |
2304 | */ | |
19958708 | 2305 | |
c3f6f71d JM |
2306 | if (pi->tid != 0) |
2307 | pi = find_procinfo_or_die (pi->pid, 0); | |
2308 | ||
2309 | #ifdef NEW_PROC_API | |
2310 | if (!pi->status_valid) | |
2311 | if (!proc_get_status (pi)) | |
2312 | return NULL; | |
2313 | ||
37de36c6 | 2314 | #ifndef DYNAMIC_SYSCALLS |
c3f6f71d | 2315 | ret = &pi->prstatus.pr_sysentry; |
37de36c6 KB |
2316 | #else /* DYNAMIC_SYSCALLS */ |
2317 | { | |
2318 | static sysset_t *sysentry; | |
2319 | size_t size; | |
2320 | ||
2321 | if (!sysentry) | |
2322 | sysentry = sysset_t_alloc (pi); | |
2323 | ret = sysentry; | |
2324 | if (pi->status_fd == 0 && open_procinfo_files (pi, FD_STATUS) == 0) | |
2325 | return NULL; | |
2326 | if (pi->prstatus.pr_sysentry_offset == 0) | |
2327 | { | |
2328 | gdb_premptysysset (sysentry); | |
2329 | } | |
2330 | else | |
2331 | { | |
2332 | int rsize; | |
2333 | ||
2334 | if (lseek (pi->status_fd, (off_t) pi->prstatus.pr_sysentry_offset, | |
2335 | SEEK_SET) | |
2336 | != (off_t) pi->prstatus.pr_sysentry_offset) | |
2337 | return NULL; | |
2338 | size = sysset_t_size (pi); | |
2339 | gdb_premptysysset (sysentry); | |
2340 | rsize = read (pi->status_fd, sysentry, size); | |
2341 | if (rsize < 0) | |
2342 | return NULL; | |
2343 | } | |
2344 | } | |
2345 | #endif /* DYNAMIC_SYSCALLS */ | |
2346 | #else /* !NEW_PROC_API */ | |
c3f6f71d JM |
2347 | { |
2348 | static sysset_t sysentry; | |
c906108c | 2349 | |
c3f6f71d JM |
2350 | if (ioctl (pi->ctl_fd, PIOCGENTRY, &sysentry) >= 0) |
2351 | ret = &sysentry; | |
2352 | } | |
37de36c6 | 2353 | #endif /* NEW_PROC_API */ |
c3f6f71d | 2354 | if (save && ret) |
37de36c6 | 2355 | memcpy (save, ret, sysset_t_size (pi)); |
c906108c | 2356 | |
c3f6f71d JM |
2357 | return ret; |
2358 | } | |
c5aa993b | 2359 | |
c3f6f71d JM |
2360 | /* |
2361 | * Function: proc_get_traced_sysexit | |
2362 | * | |
2363 | * returns the set of syscalls that are traced /debugged on exit. | |
2364 | * Will also copy the syscall set if 'save' is non-zero. | |
c906108c SS |
2365 | */ |
2366 | ||
c3f6f71d | 2367 | sysset_t * |
fba45db2 | 2368 | proc_get_traced_sysexit (procinfo *pi, sysset_t *save) |
c906108c | 2369 | { |
c3f6f71d JM |
2370 | sysset_t * ret = NULL; |
2371 | ||
2372 | /* | |
2373 | * We should never have to apply this operation to any procinfo | |
2374 | * except the one for the main process. If that ever changes | |
19958708 | 2375 | * for any reason, then take out the following clause and |
c3f6f71d JM |
2376 | * replace it with one that makes sure the ctl_fd is open. |
2377 | */ | |
19958708 | 2378 | |
c3f6f71d JM |
2379 | if (pi->tid != 0) |
2380 | pi = find_procinfo_or_die (pi->pid, 0); | |
2381 | ||
2382 | #ifdef NEW_PROC_API | |
2383 | if (!pi->status_valid) | |
2384 | if (!proc_get_status (pi)) | |
2385 | return NULL; | |
2386 | ||
37de36c6 | 2387 | #ifndef DYNAMIC_SYSCALLS |
c3f6f71d | 2388 | ret = &pi->prstatus.pr_sysexit; |
37de36c6 KB |
2389 | #else /* DYNAMIC_SYSCALLS */ |
2390 | { | |
2391 | static sysset_t *sysexit; | |
2392 | size_t size; | |
2393 | ||
2394 | if (!sysexit) | |
2395 | sysexit = sysset_t_alloc (pi); | |
2396 | ret = sysexit; | |
2397 | if (pi->status_fd == 0 && open_procinfo_files (pi, FD_STATUS) == 0) | |
2398 | return NULL; | |
2399 | if (pi->prstatus.pr_sysexit_offset == 0) | |
2400 | { | |
2401 | gdb_premptysysset (sysexit); | |
2402 | } | |
2403 | else | |
2404 | { | |
2405 | int rsize; | |
2406 | ||
2407 | if (lseek (pi->status_fd, (off_t) pi->prstatus.pr_sysexit_offset, SEEK_SET) | |
2408 | != (off_t) pi->prstatus.pr_sysexit_offset) | |
2409 | return NULL; | |
2410 | size = sysset_t_size (pi); | |
2411 | gdb_premptysysset (sysexit); | |
2412 | rsize = read (pi->status_fd, sysexit, size); | |
2413 | if (rsize < 0) | |
2414 | return NULL; | |
2415 | } | |
2416 | } | |
2417 | #endif /* DYNAMIC_SYSCALLS */ | |
c3f6f71d JM |
2418 | #else |
2419 | { | |
2420 | static sysset_t sysexit; | |
c5aa993b | 2421 | |
c3f6f71d JM |
2422 | if (ioctl (pi->ctl_fd, PIOCGEXIT, &sysexit) >= 0) |
2423 | ret = &sysexit; | |
2424 | } | |
2425 | #endif | |
2426 | if (save && ret) | |
37de36c6 | 2427 | memcpy (save, ret, sysset_t_size (pi)); |
c3f6f71d JM |
2428 | |
2429 | return ret; | |
2430 | } | |
c906108c | 2431 | |
c3f6f71d JM |
2432 | /* |
2433 | * Function: proc_clear_current_fault | |
2434 | * | |
2435 | * The current fault (if any) is cleared; the associated signal | |
2436 | * will not be sent to the process or LWP when it resumes. | |
2437 | * Returns non-zero for success, zero for failure. | |
2438 | */ | |
c906108c | 2439 | |
c3f6f71d | 2440 | int |
fba45db2 | 2441 | proc_clear_current_fault (procinfo *pi) |
c3f6f71d JM |
2442 | { |
2443 | int win; | |
2444 | ||
2445 | /* | |
2446 | * We should never have to apply this operation to any procinfo | |
2447 | * except the one for the main process. If that ever changes | |
19958708 | 2448 | * for any reason, then take out the following clause and |
c3f6f71d JM |
2449 | * replace it with one that makes sure the ctl_fd is open. |
2450 | */ | |
19958708 | 2451 | |
c3f6f71d JM |
2452 | if (pi->tid != 0) |
2453 | pi = find_procinfo_or_die (pi->pid, 0); | |
2454 | ||
2455 | #ifdef NEW_PROC_API | |
2456 | { | |
37de36c6 | 2457 | procfs_ctl_t cmd = PCCFAULT; |
c3f6f71d JM |
2458 | win = (write (pi->ctl_fd, (void *) &cmd, sizeof (cmd)) == sizeof (cmd)); |
2459 | } | |
2460 | #else | |
2461 | win = (ioctl (pi->ctl_fd, PIOCCFAULT, 0) >= 0); | |
2462 | #endif | |
2463 | ||
2464 | return win; | |
c906108c SS |
2465 | } |
2466 | ||
2467 | /* | |
c3f6f71d JM |
2468 | * Function: proc_set_current_signal |
2469 | * | |
2470 | * Set the "current signal" that will be delivered next to the process. | |
2471 | * NOTE: semantics are different from those of KILL. | |
2472 | * This signal will be delivered to the process or LWP | |
2473 | * immediately when it is resumed (even if the signal is held/blocked); | |
2474 | * it will NOT immediately cause another event of interest, and will NOT | |
2475 | * first trap back to the debugger. | |
2476 | * | |
2477 | * Returns non-zero for success, zero for failure. | |
2478 | */ | |
2479 | ||
2480 | int | |
fba45db2 | 2481 | proc_set_current_signal (procinfo *pi, int signo) |
c3f6f71d JM |
2482 | { |
2483 | int win; | |
2484 | struct { | |
37de36c6 | 2485 | procfs_ctl_t cmd; |
c3f6f71d | 2486 | /* Use char array to avoid alignment issues. */ |
37de36c6 | 2487 | char sinfo[sizeof (gdb_siginfo_t)]; |
c3f6f71d | 2488 | } arg; |
37de36c6 | 2489 | gdb_siginfo_t *mysinfo; |
c3f6f71d JM |
2490 | |
2491 | /* | |
2492 | * We should never have to apply this operation to any procinfo | |
2493 | * except the one for the main process. If that ever changes | |
19958708 | 2494 | * for any reason, then take out the following clause and |
c3f6f71d JM |
2495 | * replace it with one that makes sure the ctl_fd is open. |
2496 | */ | |
19958708 | 2497 | |
c3f6f71d JM |
2498 | if (pi->tid != 0) |
2499 | pi = find_procinfo_or_die (pi->pid, 0); | |
2500 | ||
2501 | #ifdef PROCFS_DONT_PIOCSSIG_CURSIG | |
2502 | /* With Alpha OSF/1 procfs, the kernel gets really confused if it | |
2503 | * receives a PIOCSSIG with a signal identical to the current signal, | |
19958708 | 2504 | * it messes up the current signal. Work around the kernel bug. |
c3f6f71d JM |
2505 | */ |
2506 | if (signo > 0 && | |
2507 | signo == proc_cursig (pi)) | |
2508 | return 1; /* I assume this is a success? */ | |
2509 | #endif | |
2510 | ||
2511 | /* The pointer is just a type alias. */ | |
37de36c6 | 2512 | mysinfo = (gdb_siginfo_t *) &arg.sinfo; |
c3f6f71d JM |
2513 | mysinfo->si_signo = signo; |
2514 | mysinfo->si_code = 0; | |
2515 | mysinfo->si_pid = getpid (); /* ?why? */ | |
2516 | mysinfo->si_uid = getuid (); /* ?why? */ | |
2517 | ||
2518 | #ifdef NEW_PROC_API | |
2519 | arg.cmd = PCSSIG; | |
2520 | win = (write (pi->ctl_fd, (void *) &arg, sizeof (arg)) == sizeof (arg)); | |
2521 | #else | |
2522 | win = (ioctl (pi->ctl_fd, PIOCSSIG, (void *) &arg.sinfo) >= 0); | |
2523 | #endif | |
c906108c | 2524 | |
c3f6f71d JM |
2525 | return win; |
2526 | } | |
c906108c | 2527 | |
c3f6f71d JM |
2528 | /* |
2529 | * Function: proc_clear_current_signal | |
2530 | * | |
2531 | * The current signal (if any) is cleared, and | |
2532 | * is not sent to the process or LWP when it resumes. | |
2533 | * Returns non-zero for success, zero for failure. | |
2534 | */ | |
c906108c | 2535 | |
c3f6f71d | 2536 | int |
fba45db2 | 2537 | proc_clear_current_signal (procinfo *pi) |
c3f6f71d JM |
2538 | { |
2539 | int win; | |
2540 | ||
2541 | /* | |
2542 | * We should never have to apply this operation to any procinfo | |
2543 | * except the one for the main process. If that ever changes | |
19958708 | 2544 | * for any reason, then take out the following clause and |
c3f6f71d JM |
2545 | * replace it with one that makes sure the ctl_fd is open. |
2546 | */ | |
19958708 | 2547 | |
c3f6f71d JM |
2548 | if (pi->tid != 0) |
2549 | pi = find_procinfo_or_die (pi->pid, 0); | |
2550 | ||
2551 | #ifdef NEW_PROC_API | |
2552 | { | |
2553 | struct { | |
37de36c6 | 2554 | procfs_ctl_t cmd; |
c3f6f71d | 2555 | /* Use char array to avoid alignment issues. */ |
37de36c6 | 2556 | char sinfo[sizeof (gdb_siginfo_t)]; |
c3f6f71d | 2557 | } arg; |
37de36c6 | 2558 | gdb_siginfo_t *mysinfo; |
c3f6f71d JM |
2559 | |
2560 | arg.cmd = PCSSIG; | |
2561 | /* The pointer is just a type alias. */ | |
37de36c6 | 2562 | mysinfo = (gdb_siginfo_t *) &arg.sinfo; |
c3f6f71d JM |
2563 | mysinfo->si_signo = 0; |
2564 | mysinfo->si_code = 0; | |
2565 | mysinfo->si_errno = 0; | |
2566 | mysinfo->si_pid = getpid (); /* ?why? */ | |
2567 | mysinfo->si_uid = getuid (); /* ?why? */ | |
2568 | ||
2569 | win = (write (pi->ctl_fd, (void *) &arg, sizeof (arg)) == sizeof (arg)); | |
2570 | } | |
2571 | #else | |
2572 | win = (ioctl (pi->ctl_fd, PIOCSSIG, 0) >= 0); | |
2573 | #endif | |
c906108c | 2574 | |
c3f6f71d JM |
2575 | return win; |
2576 | } | |
c906108c | 2577 | |
772cf8be MK |
2578 | /* Return the general-purpose registers for the process or LWP |
2579 | corresponding to PI. Upon failure, return NULL. */ | |
c906108c | 2580 | |
c3f6f71d | 2581 | gdb_gregset_t * |
fba45db2 | 2582 | proc_get_gregs (procinfo *pi) |
c3f6f71d JM |
2583 | { |
2584 | if (!pi->status_valid || !pi->gregs_valid) | |
2585 | if (!proc_get_status (pi)) | |
2586 | return NULL; | |
2587 | ||
772cf8be MK |
2588 | /* OK, sorry about the ifdef's. There's three cases instead of two, |
2589 | because in this case Unixware and Solaris/RW differ. */ | |
c3f6f71d JM |
2590 | |
2591 | #ifdef NEW_PROC_API | |
772cf8be | 2592 | # ifdef UNIXWARE /* FIXME: Should be autoconfigured. */ |
c3f6f71d | 2593 | return &pi->prstatus.pr_lwp.pr_context.uc_mcontext.gregs; |
772cf8be | 2594 | # else |
c3f6f71d | 2595 | return &pi->prstatus.pr_lwp.pr_reg; |
772cf8be MK |
2596 | # endif |
2597 | #else | |
c3f6f71d | 2598 | return &pi->prstatus.pr_reg; |
772cf8be | 2599 | #endif |
c3f6f71d | 2600 | } |
c5aa993b | 2601 | |
772cf8be MK |
2602 | /* Return the general-purpose registers for the process or LWP |
2603 | corresponding to PI. Upon failure, return NULL. */ | |
c906108c | 2604 | |
c3f6f71d | 2605 | gdb_fpregset_t * |
fba45db2 | 2606 | proc_get_fpregs (procinfo *pi) |
c906108c | 2607 | { |
c3f6f71d JM |
2608 | #ifdef NEW_PROC_API |
2609 | if (!pi->status_valid || !pi->fpregs_valid) | |
2610 | if (!proc_get_status (pi)) | |
2611 | return NULL; | |
2612 | ||
772cf8be | 2613 | # ifdef UNIXWARE /* FIXME: Should be autoconfigured. */ |
c3f6f71d | 2614 | return &pi->prstatus.pr_lwp.pr_context.uc_mcontext.fpregs; |
772cf8be | 2615 | # else |
c3f6f71d | 2616 | return &pi->prstatus.pr_lwp.pr_fpreg; |
772cf8be | 2617 | # endif |
c5aa993b | 2618 | |
772cf8be | 2619 | #else /* not NEW_PROC_API */ |
c3f6f71d | 2620 | if (pi->fpregs_valid) |
772cf8be | 2621 | return &pi->fpregset; /* Already got 'em. */ |
c3f6f71d | 2622 | else |
c906108c | 2623 | { |
772cf8be | 2624 | if (pi->ctl_fd == 0 && open_procinfo_files (pi, FD_CTL) == 0) |
c906108c | 2625 | { |
c3f6f71d | 2626 | return NULL; |
c906108c | 2627 | } |
c3f6f71d | 2628 | else |
c906108c | 2629 | { |
772cf8be | 2630 | # ifdef PIOCTGFPREG |
c3f6f71d JM |
2631 | struct { |
2632 | long pr_count; | |
2633 | tid_t pr_error_thread; | |
2634 | tfpregset_t thread_1; | |
2635 | } thread_fpregs; | |
2636 | ||
2637 | thread_fpregs.pr_count = 1; | |
2638 | thread_fpregs.thread_1.tid = pi->tid; | |
2639 | ||
772cf8be MK |
2640 | if (pi->tid == 0 |
2641 | && ioctl (pi->ctl_fd, PIOCGFPREG, &pi->fpregset) >= 0) | |
c3f6f71d JM |
2642 | { |
2643 | pi->fpregs_valid = 1; | |
772cf8be | 2644 | return &pi->fpregset; /* Got 'em now! */ |
c3f6f71d | 2645 | } |
772cf8be MK |
2646 | else if (pi->tid != 0 |
2647 | && ioctl (pi->ctl_fd, PIOCTGFPREG, &thread_fpregs) >= 0) | |
c3f6f71d JM |
2648 | { |
2649 | memcpy (&pi->fpregset, &thread_fpregs.thread_1.pr_fpregs, | |
2650 | sizeof (pi->fpregset)); | |
2651 | pi->fpregs_valid = 1; | |
772cf8be | 2652 | return &pi->fpregset; /* Got 'em now! */ |
c3f6f71d JM |
2653 | } |
2654 | else | |
2655 | { | |
2656 | return NULL; | |
2657 | } | |
772cf8be | 2658 | # else |
c3f6f71d JM |
2659 | if (ioctl (pi->ctl_fd, PIOCGFPREG, &pi->fpregset) >= 0) |
2660 | { | |
2661 | pi->fpregs_valid = 1; | |
772cf8be | 2662 | return &pi->fpregset; /* Got 'em now! */ |
c3f6f71d JM |
2663 | } |
2664 | else | |
2665 | { | |
2666 | return NULL; | |
2667 | } | |
772cf8be | 2668 | # endif |
c906108c | 2669 | } |
c906108c | 2670 | } |
772cf8be | 2671 | #endif /* NEW_PROC_API */ |
c906108c SS |
2672 | } |
2673 | ||
772cf8be MK |
2674 | /* Write the general-purpose registers back to the process or LWP |
2675 | corresponding to PI. Return non-zero for success, zero for | |
2676 | failure. */ | |
c3f6f71d JM |
2677 | |
2678 | int | |
fba45db2 | 2679 | proc_set_gregs (procinfo *pi) |
c906108c | 2680 | { |
c3f6f71d JM |
2681 | gdb_gregset_t *gregs; |
2682 | int win; | |
c5aa993b | 2683 | |
772cf8be MK |
2684 | gregs = proc_get_gregs (pi); |
2685 | if (gregs == NULL) | |
2686 | return 0; /* proc_get_regs has already warned. */ | |
c3f6f71d | 2687 | |
772cf8be | 2688 | if (pi->ctl_fd == 0 && open_procinfo_files (pi, FD_CTL) == 0) |
c906108c | 2689 | { |
c3f6f71d | 2690 | return 0; |
c906108c | 2691 | } |
c3f6f71d | 2692 | else |
c906108c | 2693 | { |
c3f6f71d JM |
2694 | #ifdef NEW_PROC_API |
2695 | struct { | |
37de36c6 | 2696 | procfs_ctl_t cmd; |
c3f6f71d JM |
2697 | /* Use char array to avoid alignment issues. */ |
2698 | char gregs[sizeof (gdb_gregset_t)]; | |
2699 | } arg; | |
2700 | ||
772cf8be | 2701 | arg.cmd = PCSREG; |
c3f6f71d JM |
2702 | memcpy (&arg.gregs, gregs, sizeof (arg.gregs)); |
2703 | win = (write (pi->ctl_fd, (void *) &arg, sizeof (arg)) == sizeof (arg)); | |
2704 | #else | |
2705 | win = (ioctl (pi->ctl_fd, PIOCSREG, gregs) >= 0); | |
2706 | #endif | |
c906108c | 2707 | } |
c3f6f71d | 2708 | |
772cf8be | 2709 | /* Policy: writing the registers invalidates our cache. */ |
c3f6f71d JM |
2710 | pi->gregs_valid = 0; |
2711 | return win; | |
c906108c SS |
2712 | } |
2713 | ||
772cf8be MK |
2714 | /* Write the floating-pointer registers back to the process or LWP |
2715 | corresponding to PI. Return non-zero for success, zero for | |
2716 | failure. */ | |
c3f6f71d JM |
2717 | |
2718 | int | |
fba45db2 | 2719 | proc_set_fpregs (procinfo *pi) |
c906108c | 2720 | { |
c3f6f71d JM |
2721 | gdb_fpregset_t *fpregs; |
2722 | int win; | |
2723 | ||
772cf8be MK |
2724 | fpregs = proc_get_fpregs (pi); |
2725 | if (fpregs == NULL) | |
2726 | return 0; /* proc_get_fpregs has already warned. */ | |
c5aa993b | 2727 | |
772cf8be | 2728 | if (pi->ctl_fd == 0 && open_procinfo_files (pi, FD_CTL) == 0) |
c906108c | 2729 | { |
c3f6f71d | 2730 | return 0; |
c906108c | 2731 | } |
c3f6f71d | 2732 | else |
c906108c | 2733 | { |
c3f6f71d JM |
2734 | #ifdef NEW_PROC_API |
2735 | struct { | |
37de36c6 | 2736 | procfs_ctl_t cmd; |
c3f6f71d JM |
2737 | /* Use char array to avoid alignment issues. */ |
2738 | char fpregs[sizeof (gdb_fpregset_t)]; | |
2739 | } arg; | |
2740 | ||
772cf8be | 2741 | arg.cmd = PCSFPREG; |
c3f6f71d JM |
2742 | memcpy (&arg.fpregs, fpregs, sizeof (arg.fpregs)); |
2743 | win = (write (pi->ctl_fd, (void *) &arg, sizeof (arg)) == sizeof (arg)); | |
2744 | #else | |
772cf8be | 2745 | # ifdef PIOCTSFPREG |
c3f6f71d JM |
2746 | if (pi->tid == 0) |
2747 | win = (ioctl (pi->ctl_fd, PIOCSFPREG, fpregs) >= 0); | |
2748 | else | |
2749 | { | |
2750 | struct { | |
2751 | long pr_count; | |
2752 | tid_t pr_error_thread; | |
2753 | tfpregset_t thread_1; | |
2754 | } thread_fpregs; | |
2755 | ||
2756 | thread_fpregs.pr_count = 1; | |
2757 | thread_fpregs.thread_1.tid = pi->tid; | |
2758 | memcpy (&thread_fpregs.thread_1.pr_fpregs, fpregs, | |
2759 | sizeof (*fpregs)); | |
2760 | win = (ioctl (pi->ctl_fd, PIOCTSFPREG, &thread_fpregs) >= 0); | |
2761 | } | |
772cf8be | 2762 | # else |
c3f6f71d | 2763 | win = (ioctl (pi->ctl_fd, PIOCSFPREG, fpregs) >= 0); |
772cf8be MK |
2764 | # endif |
2765 | #endif /* NEW_PROC_API */ | |
c906108c | 2766 | } |
c3f6f71d | 2767 | |
772cf8be | 2768 | /* Policy: writing the registers invalidates our cache. */ |
c3f6f71d JM |
2769 | pi->fpregs_valid = 0; |
2770 | return win; | |
c906108c SS |
2771 | } |
2772 | ||
2773 | /* | |
c3f6f71d JM |
2774 | * Function: proc_kill |
2775 | * | |
2776 | * Send a signal to the proc or lwp with the semantics of "kill()". | |
2777 | * Returns non-zero for success, zero for failure. | |
2778 | */ | |
c906108c | 2779 | |
c3f6f71d | 2780 | int |
fba45db2 | 2781 | proc_kill (procinfo *pi, int signo) |
c3f6f71d JM |
2782 | { |
2783 | int win; | |
c906108c | 2784 | |
c3f6f71d JM |
2785 | /* |
2786 | * We might conceivably apply this operation to an LWP, and | |
2787 | * the LWP's ctl file descriptor might not be open. | |
2788 | */ | |
c906108c | 2789 | |
c3f6f71d JM |
2790 | if (pi->ctl_fd == 0 && |
2791 | open_procinfo_files (pi, FD_CTL) == 0) | |
2792 | { | |
2793 | return 0; | |
2794 | } | |
2795 | else | |
2796 | { | |
2797 | #ifdef NEW_PROC_API | |
37de36c6 | 2798 | procfs_ctl_t cmd[2]; |
c906108c | 2799 | |
c3f6f71d JM |
2800 | cmd[0] = PCKILL; |
2801 | cmd[1] = signo; | |
2802 | win = (write (pi->ctl_fd, (char *) &cmd, sizeof (cmd)) == sizeof (cmd)); | |
2803 | #else /* ioctl method */ | |
2804 | /* FIXME: do I need the Alpha OSF fixups present in | |
2805 | procfs.c/unconditionally_kill_inferior? Perhaps only for SIGKILL? */ | |
2806 | win = (ioctl (pi->ctl_fd, PIOCKILL, &signo) >= 0); | |
2807 | #endif | |
2808 | } | |
c906108c | 2809 | |
c3f6f71d JM |
2810 | return win; |
2811 | } | |
c906108c | 2812 | |
c3f6f71d JM |
2813 | /* |
2814 | * Function: proc_parent_pid | |
2815 | * | |
2816 | * Find the pid of the process that started this one. | |
2817 | * Returns the parent process pid, or zero. | |
c906108c SS |
2818 | */ |
2819 | ||
c3f6f71d | 2820 | int |
fba45db2 | 2821 | proc_parent_pid (procinfo *pi) |
c906108c | 2822 | { |
c3f6f71d JM |
2823 | /* |
2824 | * We should never have to apply this operation to any procinfo | |
2825 | * except the one for the main process. If that ever changes | |
19958708 | 2826 | * for any reason, then take out the following clause and |
c3f6f71d JM |
2827 | * replace it with one that makes sure the ctl_fd is open. |
2828 | */ | |
19958708 | 2829 | |
c3f6f71d JM |
2830 | if (pi->tid != 0) |
2831 | pi = find_procinfo_or_die (pi->pid, 0); | |
2832 | ||
2833 | if (!pi->status_valid) | |
2834 | if (!proc_get_status (pi)) | |
2835 | return 0; | |
c5aa993b | 2836 | |
c3f6f71d JM |
2837 | return pi->prstatus.pr_ppid; |
2838 | } | |
2839 | ||
2840 | ||
9a043c1d AC |
2841 | /* Convert a target address (a.k.a. CORE_ADDR) into a host address |
2842 | (a.k.a void pointer)! */ | |
2843 | ||
2844 | static void * | |
2845 | procfs_address_to_host_pointer (CORE_ADDR addr) | |
2846 | { | |
2847 | void *ptr; | |
2848 | ||
2849 | gdb_assert (sizeof (ptr) == TYPE_LENGTH (builtin_type_void_data_ptr)); | |
76e71323 UW |
2850 | gdbarch_address_to_pointer (current_gdbarch, builtin_type_void_data_ptr, |
2851 | &ptr, addr); | |
9a043c1d AC |
2852 | return ptr; |
2853 | } | |
2854 | ||
c3f6f71d JM |
2855 | /* |
2856 | * Function: proc_set_watchpoint | |
2857 | * | |
2858 | */ | |
2859 | ||
2860 | int | |
fba45db2 | 2861 | proc_set_watchpoint (procinfo *pi, CORE_ADDR addr, int len, int wflags) |
c3f6f71d | 2862 | { |
19958708 | 2863 | #if !defined (TARGET_HAS_HARDWARE_WATCHPOINTS) |
c3f6f71d JM |
2864 | return 0; |
2865 | #else | |
2866 | /* Horrible hack! Detect Solaris 2.5, because this doesn't work on 2.5 */ | |
2867 | #if defined (PIOCOPENLWP) || defined (UNIXWARE) /* Solaris 2.5: bail out */ | |
2868 | return 0; | |
2869 | #else | |
2870 | struct { | |
37de36c6 | 2871 | procfs_ctl_t cmd; |
c3f6f71d JM |
2872 | char watch[sizeof (prwatch_t)]; |
2873 | } arg; | |
2874 | prwatch_t *pwatch; | |
2875 | ||
2876 | pwatch = (prwatch_t *) &arg.watch; | |
9a043c1d AC |
2877 | /* NOTE: cagney/2003-02-01: Even more horrible hack. Need to |
2878 | convert a target address into something that can be stored in a | |
2879 | native data structure. */ | |
831e682e | 2880 | #ifdef PCAGENT /* Horrible hack: only defined on Solaris 2.6+ */ |
9a043c1d | 2881 | pwatch->pr_vaddr = (uintptr_t) procfs_address_to_host_pointer (addr); |
831e682e | 2882 | #else |
9a043c1d | 2883 | pwatch->pr_vaddr = (caddr_t) procfs_address_to_host_pointer (addr); |
831e682e | 2884 | #endif |
c3f6f71d JM |
2885 | pwatch->pr_size = len; |
2886 | pwatch->pr_wflags = wflags; | |
2887 | #if defined(NEW_PROC_API) && defined (PCWATCH) | |
2888 | arg.cmd = PCWATCH; | |
2889 | return (write (pi->ctl_fd, &arg, sizeof (arg)) == sizeof (arg)); | |
2890 | #else | |
2891 | #if defined (PIOCSWATCH) | |
2892 | return (ioctl (pi->ctl_fd, PIOCSWATCH, pwatch) >= 0); | |
2893 | #else | |
2894 | return 0; /* Fail */ | |
2895 | #endif | |
2896 | #endif | |
2897 | #endif | |
2898 | #endif | |
c906108c SS |
2899 | } |
2900 | ||
c3f6f71d | 2901 | #ifdef TM_I386SOL2_H /* Is it hokey to use this? */ |
c906108c | 2902 | |
c3f6f71d | 2903 | #include <sys/sysi86.h> |
c906108c | 2904 | |
c3f6f71d JM |
2905 | /* |
2906 | * Function: proc_get_LDT_entry | |
2907 | * | |
2908 | * Inputs: | |
2909 | * procinfo *pi; | |
2910 | * int key; | |
2911 | * | |
2912 | * The 'key' is actually the value of the lower 16 bits of | |
2913 | * the GS register for the LWP that we're interested in. | |
2914 | * | |
2915 | * Return: matching ssh struct (LDT entry). | |
c906108c SS |
2916 | */ |
2917 | ||
c3f6f71d | 2918 | struct ssd * |
fba45db2 | 2919 | proc_get_LDT_entry (procinfo *pi, int key) |
c906108c | 2920 | { |
c3f6f71d JM |
2921 | static struct ssd *ldt_entry = NULL; |
2922 | #ifdef NEW_PROC_API | |
2923 | char pathname[MAX_PROC_NAME_SIZE]; | |
2924 | struct cleanup *old_chain = NULL; | |
2925 | int fd; | |
2926 | ||
2927 | /* Allocate space for one LDT entry. | |
2928 | This alloc must persist, because we return a pointer to it. */ | |
2929 | if (ldt_entry == NULL) | |
2930 | ldt_entry = (struct ssd *) xmalloc (sizeof (struct ssd)); | |
2931 | ||
2932 | /* Open the file descriptor for the LDT table. */ | |
2933 | sprintf (pathname, "/proc/%d/ldt", pi->pid); | |
4d1bcd09 | 2934 | if ((fd = open_with_retry (pathname, O_RDONLY)) < 0) |
c906108c | 2935 | { |
c3f6f71d JM |
2936 | proc_warn (pi, "proc_get_LDT_entry (open)", __LINE__); |
2937 | return NULL; | |
c906108c | 2938 | } |
c3f6f71d | 2939 | /* Make sure it gets closed again! */ |
004527cb | 2940 | old_chain = make_cleanup_close (fd); |
c906108c | 2941 | |
c3f6f71d JM |
2942 | /* Now 'read' thru the table, find a match and return it. */ |
2943 | while (read (fd, ldt_entry, sizeof (struct ssd)) == sizeof (struct ssd)) | |
c906108c | 2944 | { |
c3f6f71d JM |
2945 | if (ldt_entry->sel == 0 && |
2946 | ldt_entry->bo == 0 && | |
2947 | ldt_entry->acc1 == 0 && | |
2948 | ldt_entry->acc2 == 0) | |
2949 | break; /* end of table */ | |
2950 | /* If key matches, return this entry. */ | |
2951 | if (ldt_entry->sel == key) | |
2952 | return ldt_entry; | |
c906108c | 2953 | } |
c3f6f71d JM |
2954 | /* Loop ended, match not found. */ |
2955 | return NULL; | |
2956 | #else | |
2957 | int nldt, i; | |
2958 | static int nalloc = 0; | |
c906108c | 2959 | |
c3f6f71d JM |
2960 | /* Get the number of LDT entries. */ |
2961 | if (ioctl (pi->ctl_fd, PIOCNLDT, &nldt) < 0) | |
c906108c | 2962 | { |
c3f6f71d JM |
2963 | proc_warn (pi, "proc_get_LDT_entry (PIOCNLDT)", __LINE__); |
2964 | return NULL; | |
c906108c SS |
2965 | } |
2966 | ||
c3f6f71d JM |
2967 | /* Allocate space for the number of LDT entries. */ |
2968 | /* This alloc has to persist, 'cause we return a pointer to it. */ | |
2969 | if (nldt > nalloc) | |
c906108c | 2970 | { |
19958708 | 2971 | ldt_entry = (struct ssd *) |
c3f6f71d JM |
2972 | xrealloc (ldt_entry, (nldt + 1) * sizeof (struct ssd)); |
2973 | nalloc = nldt; | |
2974 | } | |
19958708 | 2975 | |
c3f6f71d JM |
2976 | /* Read the whole table in one gulp. */ |
2977 | if (ioctl (pi->ctl_fd, PIOCLDT, ldt_entry) < 0) | |
2978 | { | |
2979 | proc_warn (pi, "proc_get_LDT_entry (PIOCLDT)", __LINE__); | |
2980 | return NULL; | |
c906108c SS |
2981 | } |
2982 | ||
c3f6f71d JM |
2983 | /* Search the table and return the (first) entry matching 'key'. */ |
2984 | for (i = 0; i < nldt; i++) | |
2985 | if (ldt_entry[i].sel == key) | |
2986 | return &ldt_entry[i]; | |
c906108c | 2987 | |
c3f6f71d JM |
2988 | /* Loop ended, match not found. */ |
2989 | return NULL; | |
2990 | #endif | |
2991 | } | |
c906108c | 2992 | |
c3f6f71d | 2993 | #endif /* TM_I386SOL2_H */ |
c906108c | 2994 | |
c3f6f71d | 2995 | /* =============== END, non-thread part of /proc "MODULE" =============== */ |
c906108c | 2996 | |
c3f6f71d | 2997 | /* =================== Thread "MODULE" =================== */ |
c906108c | 2998 | |
c3f6f71d JM |
2999 | /* NOTE: you'll see more ifdefs and duplication of functions here, |
3000 | since there is a different way to do threads on every OS. */ | |
c906108c | 3001 | |
c3f6f71d | 3002 | /* |
19958708 | 3003 | * Function: proc_get_nthreads |
c3f6f71d | 3004 | * |
19958708 | 3005 | * Return the number of threads for the process |
c3f6f71d | 3006 | */ |
c906108c | 3007 | |
c3f6f71d JM |
3008 | #if defined (PIOCNTHR) && defined (PIOCTLIST) |
3009 | /* | |
3010 | * OSF version | |
3011 | */ | |
19958708 | 3012 | int |
fba45db2 | 3013 | proc_get_nthreads (procinfo *pi) |
c3f6f71d JM |
3014 | { |
3015 | int nthreads = 0; | |
c906108c | 3016 | |
c3f6f71d JM |
3017 | if (ioctl (pi->ctl_fd, PIOCNTHR, &nthreads) < 0) |
3018 | proc_warn (pi, "procfs: PIOCNTHR failed", __LINE__); | |
c906108c | 3019 | |
c3f6f71d | 3020 | return nthreads; |
c906108c SS |
3021 | } |
3022 | ||
c3f6f71d JM |
3023 | #else |
3024 | #if defined (SYS_lwpcreate) || defined (SYS_lwp_create) /* FIXME: multiple */ | |
3025 | /* | |
3026 | * Solaris and Unixware version | |
3027 | */ | |
3028 | int | |
fba45db2 | 3029 | proc_get_nthreads (procinfo *pi) |
c906108c | 3030 | { |
c3f6f71d JM |
3031 | if (!pi->status_valid) |
3032 | if (!proc_get_status (pi)) | |
3033 | return 0; | |
c5aa993b | 3034 | |
c3f6f71d | 3035 | /* |
19958708 | 3036 | * NEW_PROC_API: only works for the process procinfo, |
c3f6f71d JM |
3037 | * because the LWP procinfos do not get prstatus filled in. |
3038 | */ | |
19958708 | 3039 | #ifdef NEW_PROC_API |
c3f6f71d JM |
3040 | if (pi->tid != 0) /* find the parent process procinfo */ |
3041 | pi = find_procinfo_or_die (pi->pid, 0); | |
c5aa993b | 3042 | #endif |
c3f6f71d | 3043 | return pi->prstatus.pr_nlwp; |
c906108c SS |
3044 | } |
3045 | ||
c3f6f71d JM |
3046 | #else |
3047 | /* | |
3048 | * Default version | |
3049 | */ | |
3050 | int | |
fba45db2 | 3051 | proc_get_nthreads (procinfo *pi) |
c906108c | 3052 | { |
c3f6f71d JM |
3053 | return 0; |
3054 | } | |
3055 | #endif | |
3056 | #endif | |
3057 | ||
3058 | /* | |
3059 | * Function: proc_get_current_thread (LWP version) | |
3060 | * | |
3061 | * Return the ID of the thread that had an event of interest. | |
3062 | * (ie. the one that hit a breakpoint or other traced event). | |
3063 | * All other things being equal, this should be the ID of a | |
3064 | * thread that is currently executing. | |
3065 | */ | |
3066 | ||
3067 | #if defined (SYS_lwpcreate) || defined (SYS_lwp_create) /* FIXME: multiple */ | |
3068 | /* | |
3069 | * Solaris and Unixware version | |
3070 | */ | |
3071 | int | |
fba45db2 | 3072 | proc_get_current_thread (procinfo *pi) |
c3f6f71d JM |
3073 | { |
3074 | /* | |
3075 | * Note: this should be applied to the root procinfo for the process, | |
3076 | * not to the procinfo for an LWP. If applied to the procinfo for | |
19958708 | 3077 | * an LWP, it will simply return that LWP's ID. In that case, |
c3f6f71d JM |
3078 | * find the parent process procinfo. |
3079 | */ | |
19958708 | 3080 | |
c3f6f71d JM |
3081 | if (pi->tid != 0) |
3082 | pi = find_procinfo_or_die (pi->pid, 0); | |
3083 | ||
3084 | if (!pi->status_valid) | |
3085 | if (!proc_get_status (pi)) | |
3086 | return 0; | |
3087 | ||
3088 | #ifdef NEW_PROC_API | |
3089 | return pi->prstatus.pr_lwp.pr_lwpid; | |
c906108c | 3090 | #else |
c3f6f71d | 3091 | return pi->prstatus.pr_who; |
c906108c | 3092 | #endif |
c3f6f71d | 3093 | } |
c906108c | 3094 | |
c3f6f71d JM |
3095 | #else |
3096 | #if defined (PIOCNTHR) && defined (PIOCTLIST) | |
3097 | /* | |
3098 | * OSF version | |
3099 | */ | |
19958708 | 3100 | int |
fba45db2 | 3101 | proc_get_current_thread (procinfo *pi) |
c3f6f71d JM |
3102 | { |
3103 | #if 0 /* FIXME: not ready for prime time? */ | |
3104 | return pi->prstatus.pr_tid; | |
3105 | #else | |
3106 | return 0; | |
3107 | #endif | |
c906108c SS |
3108 | } |
3109 | ||
c3f6f71d JM |
3110 | #else |
3111 | /* | |
3112 | * Default version | |
3113 | */ | |
19958708 | 3114 | int |
fba45db2 | 3115 | proc_get_current_thread (procinfo *pi) |
c906108c | 3116 | { |
c3f6f71d JM |
3117 | return 0; |
3118 | } | |
3119 | ||
3120 | #endif | |
3121 | #endif | |
c906108c | 3122 | |
c3f6f71d | 3123 | /* |
19958708 | 3124 | * Function: proc_update_threads |
c3f6f71d JM |
3125 | * |
3126 | * Discover the IDs of all the threads within the process, and | |
3127 | * create a procinfo for each of them (chained to the parent). | |
3128 | * | |
3129 | * This unfortunately requires a different method on every OS. | |
3130 | * | |
3131 | * Return: non-zero for success, zero for failure. | |
3132 | */ | |
c906108c | 3133 | |
c3f6f71d | 3134 | int |
fba45db2 | 3135 | proc_delete_dead_threads (procinfo *parent, procinfo *thread, void *ignore) |
c3f6f71d JM |
3136 | { |
3137 | if (thread && parent) /* sanity */ | |
c906108c | 3138 | { |
c3f6f71d JM |
3139 | thread->status_valid = 0; |
3140 | if (!proc_get_status (thread)) | |
3141 | destroy_one_procinfo (&parent->thread_list, thread); | |
3142 | } | |
3143 | return 0; /* keep iterating */ | |
3144 | } | |
c5aa993b | 3145 | |
c3f6f71d JM |
3146 | #if defined (PIOCLSTATUS) |
3147 | /* | |
3148 | * Solaris 2.5 (ioctl) version | |
3149 | */ | |
3150 | int | |
fba45db2 | 3151 | proc_update_threads (procinfo *pi) |
c3f6f71d JM |
3152 | { |
3153 | gdb_prstatus_t *prstatus; | |
3154 | struct cleanup *old_chain = NULL; | |
3155 | procinfo *thread; | |
3156 | int nlwp, i; | |
3157 | ||
3158 | /* | |
3159 | * We should never have to apply this operation to any procinfo | |
3160 | * except the one for the main process. If that ever changes | |
19958708 | 3161 | * for any reason, then take out the following clause and |
c3f6f71d JM |
3162 | * replace it with one that makes sure the ctl_fd is open. |
3163 | */ | |
19958708 | 3164 | |
c3f6f71d JM |
3165 | if (pi->tid != 0) |
3166 | pi = find_procinfo_or_die (pi->pid, 0); | |
3167 | ||
3168 | proc_iterate_over_threads (pi, proc_delete_dead_threads, NULL); | |
3169 | ||
3170 | if ((nlwp = proc_get_nthreads (pi)) <= 1) | |
3171 | return 1; /* Process is not multi-threaded; nothing to do. */ | |
3172 | ||
3c37485b | 3173 | prstatus = xmalloc (sizeof (gdb_prstatus_t) * (nlwp + 1)); |
c3f6f71d | 3174 | |
b8c9b27d | 3175 | old_chain = make_cleanup (xfree, prstatus); |
c3f6f71d JM |
3176 | if (ioctl (pi->ctl_fd, PIOCLSTATUS, prstatus) < 0) |
3177 | proc_error (pi, "update_threads (PIOCLSTATUS)", __LINE__); | |
3178 | ||
3179 | /* Skip element zero, which represents the process as a whole. */ | |
3180 | for (i = 1; i < nlwp + 1; i++) | |
3181 | { | |
3182 | if ((thread = create_procinfo (pi->pid, prstatus[i].pr_who)) == NULL) | |
3183 | proc_error (pi, "update_threads, create_procinfo", __LINE__); | |
c5aa993b | 3184 | |
c3f6f71d JM |
3185 | memcpy (&thread->prstatus, &prstatus[i], sizeof (*prstatus)); |
3186 | thread->status_valid = 1; | |
3187 | } | |
3188 | pi->threads_valid = 1; | |
3189 | do_cleanups (old_chain); | |
3190 | return 1; | |
3191 | } | |
3192 | #else | |
3193 | #ifdef NEW_PROC_API | |
3194 | /* | |
3195 | * Unixware and Solaris 6 (and later) version | |
3196 | */ | |
004527cb AC |
3197 | static void |
3198 | do_closedir_cleanup (void *dir) | |
3199 | { | |
3200 | closedir (dir); | |
3201 | } | |
3202 | ||
c3f6f71d | 3203 | int |
fba45db2 | 3204 | proc_update_threads (procinfo *pi) |
c3f6f71d JM |
3205 | { |
3206 | char pathname[MAX_PROC_NAME_SIZE + 16]; | |
3207 | struct dirent *direntry; | |
3208 | struct cleanup *old_chain = NULL; | |
3209 | procinfo *thread; | |
3210 | DIR *dirp; | |
3211 | int lwpid; | |
3212 | ||
3213 | /* | |
3214 | * We should never have to apply this operation to any procinfo | |
3215 | * except the one for the main process. If that ever changes | |
19958708 | 3216 | * for any reason, then take out the following clause and |
c3f6f71d JM |
3217 | * replace it with one that makes sure the ctl_fd is open. |
3218 | */ | |
19958708 | 3219 | |
c3f6f71d JM |
3220 | if (pi->tid != 0) |
3221 | pi = find_procinfo_or_die (pi->pid, 0); | |
3222 | ||
3223 | proc_iterate_over_threads (pi, proc_delete_dead_threads, NULL); | |
3224 | ||
3225 | /* | |
3226 | * Unixware | |
3227 | * | |
19958708 RM |
3228 | * Note: this brute-force method is the only way I know of |
3229 | * to accomplish this task on Unixware. This method will | |
c3f6f71d JM |
3230 | * also work on Solaris 2.6 and 2.7. There is a much simpler |
3231 | * and more elegant way to do this on Solaris, but the margins | |
3232 | * of this manuscript are too small to write it here... ;-) | |
3233 | */ | |
3234 | ||
3235 | strcpy (pathname, pi->pathname); | |
3236 | strcat (pathname, "/lwp"); | |
3237 | if ((dirp = opendir (pathname)) == NULL) | |
3238 | proc_error (pi, "update_threads, opendir", __LINE__); | |
3239 | ||
004527cb | 3240 | old_chain = make_cleanup (do_closedir_cleanup, dirp); |
c3f6f71d JM |
3241 | while ((direntry = readdir (dirp)) != NULL) |
3242 | if (direntry->d_name[0] != '.') /* skip '.' and '..' */ | |
3243 | { | |
3244 | lwpid = atoi (&direntry->d_name[0]); | |
3245 | if ((thread = create_procinfo (pi->pid, lwpid)) == NULL) | |
3246 | proc_error (pi, "update_threads, create_procinfo", __LINE__); | |
3247 | } | |
3248 | pi->threads_valid = 1; | |
3249 | do_cleanups (old_chain); | |
3250 | return 1; | |
3251 | } | |
3252 | #else | |
3253 | #ifdef PIOCTLIST | |
3254 | /* | |
3255 | * OSF version | |
3256 | */ | |
19958708 | 3257 | int |
fba45db2 | 3258 | proc_update_threads (procinfo *pi) |
c3f6f71d JM |
3259 | { |
3260 | int nthreads, i; | |
3261 | tid_t *threads; | |
3262 | ||
3263 | /* | |
3264 | * We should never have to apply this operation to any procinfo | |
3265 | * except the one for the main process. If that ever changes | |
19958708 | 3266 | * for any reason, then take out the following clause and |
c3f6f71d JM |
3267 | * replace it with one that makes sure the ctl_fd is open. |
3268 | */ | |
19958708 | 3269 | |
c3f6f71d JM |
3270 | if (pi->tid != 0) |
3271 | pi = find_procinfo_or_die (pi->pid, 0); | |
3272 | ||
3273 | proc_iterate_over_threads (pi, proc_delete_dead_threads, NULL); | |
3274 | ||
3275 | nthreads = proc_get_nthreads (pi); | |
3276 | if (nthreads < 2) | |
3277 | return 0; /* nothing to do for 1 or fewer threads */ | |
3278 | ||
3c37485b | 3279 | threads = xmalloc (nthreads * sizeof (tid_t)); |
19958708 | 3280 | |
c3f6f71d JM |
3281 | if (ioctl (pi->ctl_fd, PIOCTLIST, threads) < 0) |
3282 | proc_error (pi, "procfs: update_threads (PIOCTLIST)", __LINE__); | |
3283 | ||
3284 | for (i = 0; i < nthreads; i++) | |
3285 | { | |
3286 | if (!find_procinfo (pi->pid, threads[i])) | |
3287 | if (!create_procinfo (pi->pid, threads[i])) | |
3288 | proc_error (pi, "update_threads, create_procinfo", __LINE__); | |
c906108c | 3289 | } |
c3f6f71d JM |
3290 | pi->threads_valid = 1; |
3291 | return 1; | |
c906108c | 3292 | } |
c3f6f71d JM |
3293 | #else |
3294 | /* | |
3295 | * Default version | |
3296 | */ | |
3297 | int | |
fba45db2 | 3298 | proc_update_threads (procinfo *pi) |
c3f6f71d JM |
3299 | { |
3300 | return 0; | |
3301 | } | |
3302 | #endif /* OSF PIOCTLIST */ | |
3303 | #endif /* NEW_PROC_API */ | |
3304 | #endif /* SOL 2.5 PIOCLSTATUS */ | |
c906108c | 3305 | |
c3f6f71d JM |
3306 | /* |
3307 | * Function: proc_iterate_over_threads | |
3308 | * | |
3309 | * Description: | |
3310 | * Given a pointer to a function, call that function once | |
3311 | * for each lwp in the procinfo list, until the function | |
3312 | * returns non-zero, in which event return the value | |
3313 | * returned by the function. | |
3314 | * | |
3315 | * Note: this function does NOT call update_threads. | |
3316 | * If you want to discover new threads first, you must | |
3317 | * call that function explicitly. This function just makes | |
19958708 RM |
3318 | * a quick pass over the currently-known procinfos. |
3319 | * | |
c3f6f71d JM |
3320 | * Arguments: |
3321 | * pi - parent process procinfo | |
3322 | * func - per-thread function | |
3323 | * ptr - opaque parameter for function. | |
3324 | * | |
3325 | * Return: | |
3326 | * First non-zero return value from the callee, or zero. | |
3327 | */ | |
3328 | ||
3329 | int | |
d0849a9a KB |
3330 | proc_iterate_over_threads (procinfo *pi, |
3331 | int (*func) (procinfo *, procinfo *, void *), | |
3332 | void *ptr) | |
c906108c | 3333 | { |
c3f6f71d JM |
3334 | procinfo *thread, *next; |
3335 | int retval = 0; | |
c906108c | 3336 | |
c3f6f71d JM |
3337 | /* |
3338 | * We should never have to apply this operation to any procinfo | |
3339 | * except the one for the main process. If that ever changes | |
19958708 | 3340 | * for any reason, then take out the following clause and |
c3f6f71d JM |
3341 | * replace it with one that makes sure the ctl_fd is open. |
3342 | */ | |
19958708 | 3343 | |
c3f6f71d JM |
3344 | if (pi->tid != 0) |
3345 | pi = find_procinfo_or_die (pi->pid, 0); | |
3346 | ||
3347 | for (thread = pi->thread_list; thread != NULL; thread = next) | |
c906108c | 3348 | { |
c3f6f71d JM |
3349 | next = thread->next; /* in case thread is destroyed */ |
3350 | if ((retval = (*func) (pi, thread, ptr)) != 0) | |
3351 | break; | |
c906108c | 3352 | } |
c3f6f71d JM |
3353 | |
3354 | return retval; | |
c906108c SS |
3355 | } |
3356 | ||
c3f6f71d JM |
3357 | /* =================== END, Thread "MODULE" =================== */ |
3358 | ||
3359 | /* =================== END, /proc "MODULE" =================== */ | |
3360 | ||
3361 | /* =================== GDB "MODULE" =================== */ | |
3362 | ||
3363 | /* | |
3364 | * Here are all of the gdb target vector functions and their friends. | |
3365 | */ | |
3366 | ||
39f77062 | 3367 | static ptid_t do_attach (ptid_t ptid); |
a14ed312 | 3368 | static void do_detach (int signo); |
37de36c6 | 3369 | static int register_gdb_signals (procinfo *, gdb_sigset_t *); |
9185ddce JB |
3370 | static void proc_trace_syscalls_1 (procinfo *pi, int syscallnum, |
3371 | int entry_or_exit, int mode, int from_tty); | |
3372 | static int insert_dbx_link_breakpoint (procinfo *pi); | |
3373 | static void remove_dbx_link_breakpoint (void); | |
3374 | ||
3375 | /* On mips-irix, we need to insert a breakpoint at __dbx_link during | |
3376 | the startup phase. The following two variables are used to record | |
3377 | the address of the breakpoint, and the code that was replaced by | |
3378 | a breakpoint. */ | |
3379 | static int dbx_link_bpt_addr = 0; | |
8181d85f | 3380 | static void *dbx_link_bpt; |
c3f6f71d JM |
3381 | |
3382 | /* | |
3383 | * Function: procfs_debug_inferior | |
3384 | * | |
3385 | * Sets up the inferior to be debugged. | |
3386 | * Registers to trace signals, hardware faults, and syscalls. | |
3387 | * Note: does not set RLC flag: caller may want to customize that. | |
3388 | * | |
3389 | * Returns: zero for success (note! unlike most functions in this module) | |
3390 | * On failure, returns the LINE NUMBER where it failed! | |
3391 | */ | |
3392 | ||
3393 | static int | |
fba45db2 | 3394 | procfs_debug_inferior (procinfo *pi) |
c906108c | 3395 | { |
c3f6f71d | 3396 | fltset_t traced_faults; |
37de36c6 KB |
3397 | gdb_sigset_t traced_signals; |
3398 | sysset_t *traced_syscall_entries; | |
3399 | sysset_t *traced_syscall_exits; | |
3400 | int status; | |
c906108c | 3401 | |
c3f6f71d JM |
3402 | #ifdef PROCFS_DONT_TRACE_FAULTS |
3403 | /* On some systems (OSF), we don't trace hardware faults. | |
3404 | Apparently it's enough that we catch them as signals. | |
3405 | Wonder why we don't just do that in general? */ | |
3406 | premptyset (&traced_faults); /* don't trace faults. */ | |
3407 | #else | |
3408 | /* Register to trace hardware faults in the child. */ | |
3409 | prfillset (&traced_faults); /* trace all faults... */ | |
3410 | prdelset (&traced_faults, FLTPAGE); /* except page fault. */ | |
3411 | #endif | |
3412 | if (!proc_set_traced_faults (pi, &traced_faults)) | |
3413 | return __LINE__; | |
c906108c | 3414 | |
c3f6f71d JM |
3415 | /* Register to trace selected signals in the child. */ |
3416 | premptyset (&traced_signals); | |
3417 | if (!register_gdb_signals (pi, &traced_signals)) | |
3418 | return __LINE__; | |
3419 | ||
37de36c6 | 3420 | |
c3f6f71d | 3421 | /* Register to trace the 'exit' system call (on entry). */ |
37de36c6 KB |
3422 | traced_syscall_entries = sysset_t_alloc (pi); |
3423 | gdb_premptysysset (traced_syscall_entries); | |
3424 | #ifdef SYS_exit | |
3425 | gdb_praddsysset (traced_syscall_entries, SYS_exit); | |
3426 | #endif | |
c3f6f71d | 3427 | #ifdef SYS_lwpexit |
37de36c6 | 3428 | gdb_praddsysset (traced_syscall_entries, SYS_lwpexit); /* And _lwp_exit... */ |
c3f6f71d JM |
3429 | #endif |
3430 | #ifdef SYS_lwp_exit | |
37de36c6 KB |
3431 | gdb_praddsysset (traced_syscall_entries, SYS_lwp_exit); |
3432 | #endif | |
3433 | #ifdef DYNAMIC_SYSCALLS | |
3434 | { | |
3435 | int callnum = find_syscall (pi, "_exit"); | |
3436 | if (callnum >= 0) | |
3437 | gdb_praddsysset (traced_syscall_entries, callnum); | |
3438 | } | |
c906108c SS |
3439 | #endif |
3440 | ||
37de36c6 KB |
3441 | status = proc_set_traced_sysentry (pi, traced_syscall_entries); |
3442 | xfree (traced_syscall_entries); | |
3443 | if (!status) | |
c3f6f71d JM |
3444 | return __LINE__; |
3445 | ||
3446 | #ifdef PRFS_STOPEXEC /* defined on OSF */ | |
3447 | /* OSF method for tracing exec syscalls. Quoting: | |
3448 | Under Alpha OSF/1 we have to use a PIOCSSPCACT ioctl to trace | |
3449 | exits from exec system calls because of the user level loader. */ | |
3450 | /* FIXME: make nice and maybe move into an access function. */ | |
3451 | { | |
3452 | int prfs_flags; | |
3453 | ||
3454 | if (ioctl (pi->ctl_fd, PIOCGSPCACT, &prfs_flags) < 0) | |
3455 | return __LINE__; | |
3456 | ||
3457 | prfs_flags |= PRFS_STOPEXEC; | |
3458 | ||
3459 | if (ioctl (pi->ctl_fd, PIOCSSPCACT, &prfs_flags) < 0) | |
3460 | return __LINE__; | |
3461 | } | |
3462 | #else /* not PRFS_STOPEXEC */ | |
3463 | /* Everyone else's (except OSF) method for tracing exec syscalls */ | |
3464 | /* GW: Rationale... | |
3465 | Not all systems with /proc have all the exec* syscalls with the same | |
3466 | names. On the SGI, for example, there is no SYS_exec, but there | |
3467 | *is* a SYS_execv. So, we try to account for that. */ | |
3468 | ||
37de36c6 KB |
3469 | traced_syscall_exits = sysset_t_alloc (pi); |
3470 | gdb_premptysysset (traced_syscall_exits); | |
c3f6f71d | 3471 | #ifdef SYS_exec |
37de36c6 | 3472 | gdb_praddsysset (traced_syscall_exits, SYS_exec); |
c3f6f71d JM |
3473 | #endif |
3474 | #ifdef SYS_execve | |
37de36c6 | 3475 | gdb_praddsysset (traced_syscall_exits, SYS_execve); |
c3f6f71d JM |
3476 | #endif |
3477 | #ifdef SYS_execv | |
37de36c6 | 3478 | gdb_praddsysset (traced_syscall_exits, SYS_execv); |
c3f6f71d | 3479 | #endif |
c5aa993b | 3480 | |
c3f6f71d | 3481 | #ifdef SYS_lwpcreate |
37de36c6 KB |
3482 | gdb_praddsysset (traced_syscall_exits, SYS_lwpcreate); |
3483 | gdb_praddsysset (traced_syscall_exits, SYS_lwpexit); | |
c906108c | 3484 | #endif |
c5aa993b | 3485 | |
c3f6f71d | 3486 | #ifdef SYS_lwp_create /* FIXME: once only, please */ |
37de36c6 KB |
3487 | gdb_praddsysset (traced_syscall_exits, SYS_lwp_create); |
3488 | gdb_praddsysset (traced_syscall_exits, SYS_lwp_exit); | |
c3f6f71d | 3489 | #endif |
c5aa993b | 3490 | |
37de36c6 KB |
3491 | #ifdef DYNAMIC_SYSCALLS |
3492 | { | |
3493 | int callnum = find_syscall (pi, "execve"); | |
3494 | if (callnum >= 0) | |
3495 | gdb_praddsysset (traced_syscall_exits, callnum); | |
3496 | callnum = find_syscall (pi, "ra_execve"); | |
3497 | if (callnum >= 0) | |
3498 | gdb_praddsysset (traced_syscall_exits, callnum); | |
3499 | } | |
3500 | #endif | |
c906108c | 3501 | |
37de36c6 KB |
3502 | status = proc_set_traced_sysexit (pi, traced_syscall_exits); |
3503 | xfree (traced_syscall_exits); | |
3504 | if (!status) | |
c3f6f71d JM |
3505 | return __LINE__; |
3506 | ||
3507 | #endif /* PRFS_STOPEXEC */ | |
3508 | return 0; | |
c906108c SS |
3509 | } |
3510 | ||
19958708 | 3511 | static void |
fba45db2 | 3512 | procfs_attach (char *args, int from_tty) |
c906108c | 3513 | { |
c3f6f71d JM |
3514 | char *exec_file; |
3515 | int pid; | |
3516 | ||
3517 | if (!args) | |
e2e0b3e5 | 3518 | error_no_arg (_("process-id to attach")); |
c3f6f71d JM |
3519 | |
3520 | pid = atoi (args); | |
3521 | if (pid == getpid ()) | |
8a3fe4f8 | 3522 | error (_("Attaching GDB to itself is not a good idea...")); |
c906108c | 3523 | |
c3f6f71d | 3524 | if (from_tty) |
c906108c | 3525 | { |
c3f6f71d JM |
3526 | exec_file = get_exec_file (0); |
3527 | ||
3528 | if (exec_file) | |
a3f17187 | 3529 | printf_filtered (_("Attaching to program `%s', %s\n"), |
39f77062 | 3530 | exec_file, target_pid_to_str (pid_to_ptid (pid))); |
c3f6f71d | 3531 | else |
a3f17187 | 3532 | printf_filtered (_("Attaching to %s\n"), |
39f77062 | 3533 | target_pid_to_str (pid_to_ptid (pid))); |
c3f6f71d JM |
3534 | |
3535 | fflush (stdout); | |
c906108c | 3536 | } |
39f77062 | 3537 | inferior_ptid = do_attach (pid_to_ptid (pid)); |
c3f6f71d JM |
3538 | push_target (&procfs_ops); |
3539 | } | |
3540 | ||
19958708 | 3541 | static void |
fba45db2 | 3542 | procfs_detach (char *args, int from_tty) |
c3f6f71d | 3543 | { |
cc377e6b MK |
3544 | int sig = 0; |
3545 | ||
3546 | if (args) | |
3547 | sig = atoi (args); | |
c3f6f71d JM |
3548 | |
3549 | if (from_tty) | |
c906108c | 3550 | { |
cc377e6b MK |
3551 | int pid = PIDGET (inferior_ptid); |
3552 | char *exec_file; | |
3553 | ||
c3f6f71d | 3554 | exec_file = get_exec_file (0); |
cc377e6b | 3555 | if (exec_file == NULL) |
c3f6f71d | 3556 | exec_file = ""; |
cc377e6b | 3557 | |
a3f17187 | 3558 | printf_filtered (_("Detaching from program: %s, %s\n"), exec_file, |
cc377e6b MK |
3559 | target_pid_to_str (pid_to_ptid (pid))); |
3560 | gdb_flush (gdb_stdout); | |
c906108c | 3561 | } |
19958708 | 3562 | |
cc377e6b MK |
3563 | do_detach (sig); |
3564 | ||
39f77062 | 3565 | inferior_ptid = null_ptid; |
cc377e6b | 3566 | unpush_target (&procfs_ops); |
c906108c SS |
3567 | } |
3568 | ||
39f77062 KB |
3569 | static ptid_t |
3570 | do_attach (ptid_t ptid) | |
c906108c | 3571 | { |
c3f6f71d JM |
3572 | procinfo *pi; |
3573 | int fail; | |
3574 | ||
39f77062 | 3575 | if ((pi = create_procinfo (PIDGET (ptid), 0)) == NULL) |
8a3fe4f8 | 3576 | perror (_("procfs: out of memory in 'attach'")); |
c3f6f71d JM |
3577 | |
3578 | if (!open_procinfo_files (pi, FD_CTL)) | |
3579 | { | |
3580 | fprintf_filtered (gdb_stderr, "procfs:%d -- ", __LINE__); | |
19958708 | 3581 | sprintf (errmsg, "do_attach: couldn't open /proc file for process %d", |
39f77062 | 3582 | PIDGET (ptid)); |
c3f6f71d JM |
3583 | dead_procinfo (pi, errmsg, NOKILL); |
3584 | } | |
c906108c | 3585 | |
c3f6f71d JM |
3586 | /* Stop the process (if it isn't already stopped). */ |
3587 | if (proc_flags (pi) & (PR_STOPPED | PR_ISTOP)) | |
c906108c | 3588 | { |
c3f6f71d JM |
3589 | pi->was_stopped = 1; |
3590 | proc_prettyprint_why (proc_why (pi), proc_what (pi), 1); | |
c906108c SS |
3591 | } |
3592 | else | |
3593 | { | |
c3f6f71d JM |
3594 | pi->was_stopped = 0; |
3595 | /* Set the process to run again when we close it. */ | |
3596 | if (!proc_set_run_on_last_close (pi)) | |
3597 | dead_procinfo (pi, "do_attach: couldn't set RLC.", NOKILL); | |
3598 | ||
3599 | /* Now stop the process. */ | |
3600 | if (!proc_stop_process (pi)) | |
3601 | dead_procinfo (pi, "do_attach: couldn't stop the process.", NOKILL); | |
3602 | pi->ignore_next_sigstop = 1; | |
c906108c | 3603 | } |
c3f6f71d JM |
3604 | /* Save some of the /proc state to be restored if we detach. */ |
3605 | if (!proc_get_traced_faults (pi, &pi->saved_fltset)) | |
3606 | dead_procinfo (pi, "do_attach: couldn't save traced faults.", NOKILL); | |
3607 | if (!proc_get_traced_signals (pi, &pi->saved_sigset)) | |
3608 | dead_procinfo (pi, "do_attach: couldn't save traced signals.", NOKILL); | |
37de36c6 | 3609 | if (!proc_get_traced_sysentry (pi, pi->saved_entryset)) |
c3f6f71d JM |
3610 | dead_procinfo (pi, "do_attach: couldn't save traced syscall entries.", |
3611 | NOKILL); | |
37de36c6 | 3612 | if (!proc_get_traced_sysexit (pi, pi->saved_exitset)) |
19958708 | 3613 | dead_procinfo (pi, "do_attach: couldn't save traced syscall exits.", |
c3f6f71d JM |
3614 | NOKILL); |
3615 | if (!proc_get_held_signals (pi, &pi->saved_sighold)) | |
3616 | dead_procinfo (pi, "do_attach: couldn't save held signals.", NOKILL); | |
3617 | ||
3618 | if ((fail = procfs_debug_inferior (pi)) != 0) | |
3619 | dead_procinfo (pi, "do_attach: failed in procfs_debug_inferior", NOKILL); | |
3620 | ||
3621 | /* Let GDB know that the inferior was attached. */ | |
3622 | attach_flag = 1; | |
3623 | return MERGEPID (pi->pid, proc_get_current_thread (pi)); | |
c906108c SS |
3624 | } |
3625 | ||
3626 | static void | |
fba45db2 | 3627 | do_detach (int signo) |
c906108c | 3628 | { |
c3f6f71d | 3629 | procinfo *pi; |
c906108c | 3630 | |
c3f6f71d | 3631 | /* Find procinfo for the main process */ |
39f77062 | 3632 | pi = find_procinfo_or_die (PIDGET (inferior_ptid), 0); /* FIXME: threads */ |
c3f6f71d JM |
3633 | if (signo) |
3634 | if (!proc_set_current_signal (pi, signo)) | |
3635 | proc_warn (pi, "do_detach, set_current_signal", __LINE__); | |
c5aa993b | 3636 | |
c3f6f71d JM |
3637 | if (!proc_set_traced_signals (pi, &pi->saved_sigset)) |
3638 | proc_warn (pi, "do_detach, set_traced_signal", __LINE__); | |
c906108c | 3639 | |
c3f6f71d JM |
3640 | if (!proc_set_traced_faults (pi, &pi->saved_fltset)) |
3641 | proc_warn (pi, "do_detach, set_traced_faults", __LINE__); | |
3642 | ||
37de36c6 | 3643 | if (!proc_set_traced_sysentry (pi, pi->saved_entryset)) |
c3f6f71d JM |
3644 | proc_warn (pi, "do_detach, set_traced_sysentry", __LINE__); |
3645 | ||
37de36c6 | 3646 | if (!proc_set_traced_sysexit (pi, pi->saved_exitset)) |
c3f6f71d JM |
3647 | proc_warn (pi, "do_detach, set_traced_sysexit", __LINE__); |
3648 | ||
3649 | if (!proc_set_held_signals (pi, &pi->saved_sighold)) | |
3650 | proc_warn (pi, "do_detach, set_held_signals", __LINE__); | |
3651 | ||
3652 | if (signo || (proc_flags (pi) & (PR_STOPPED | PR_ISTOP))) | |
3653 | if (signo || !(pi->was_stopped) || | |
e2e0b3e5 | 3654 | query (_("Was stopped when attached, make it runnable again? "))) |
c3f6f71d JM |
3655 | { |
3656 | /* Clear any pending signal. */ | |
3657 | if (!proc_clear_current_fault (pi)) | |
3658 | proc_warn (pi, "do_detach, clear_current_fault", __LINE__); | |
3659 | ||
1a303dec MS |
3660 | if (signo == 0 && !proc_clear_current_signal (pi)) |
3661 | proc_warn (pi, "do_detach, clear_current_signal", __LINE__); | |
3662 | ||
c3f6f71d JM |
3663 | if (!proc_set_run_on_last_close (pi)) |
3664 | proc_warn (pi, "do_detach, set_rlc", __LINE__); | |
3665 | } | |
3666 | ||
3667 | attach_flag = 0; | |
3668 | destroy_procinfo (pi); | |
c906108c SS |
3669 | } |
3670 | ||
772cf8be MK |
3671 | /* Fetch register REGNUM from the inferior. If REGNUM is -1, do this |
3672 | for all registers. | |
3673 | ||
3674 | ??? Is the following note still relevant? We can't get individual | |
3675 | registers with the PT_GETREGS ptrace(2) request either, yet we | |
3676 | don't bother with caching at all in that case. | |
3677 | ||
3678 | NOTE: Since the /proc interface cannot give us individual | |
3679 | registers, we pay no attention to REGNUM, and just fetch them all. | |
3680 | This results in the possibility that we will do unnecessarily many | |
3681 | fetches, since we may be called repeatedly for individual | |
3682 | registers. So we cache the results, and mark the cache invalid | |
3683 | when the process is resumed. */ | |
c3f6f71d | 3684 | |
c906108c | 3685 | static void |
56be3814 | 3686 | procfs_fetch_registers (struct regcache *regcache, int regnum) |
c906108c | 3687 | { |
772cf8be MK |
3688 | gdb_gregset_t *gregs; |
3689 | procinfo *pi; | |
3690 | int pid = PIDGET (inferior_ptid); | |
3691 | int tid = TIDGET (inferior_ptid); | |
c3f6f71d | 3692 | |
772cf8be MK |
3693 | /* First look up procinfo for the main process. */ |
3694 | pi = find_procinfo_or_die (pid, 0); | |
c3f6f71d | 3695 | |
19958708 RM |
3696 | /* If the event thread is not the same as GDB's requested thread |
3697 | (ie. inferior_ptid), then look up procinfo for the requested | |
c3f6f71d | 3698 | thread. */ |
772cf8be | 3699 | if (tid != 0 && tid != proc_get_current_thread (pi)) |
c3f6f71d JM |
3700 | pi = find_procinfo_or_die (pid, tid); |
3701 | ||
3702 | if (pi == NULL) | |
8a3fe4f8 | 3703 | error (_("procfs: fetch_registers failed to find procinfo for %s"), |
39f77062 | 3704 | target_pid_to_str (inferior_ptid)); |
c3f6f71d | 3705 | |
772cf8be MK |
3706 | gregs = proc_get_gregs (pi); |
3707 | if (gregs == NULL) | |
c3f6f71d JM |
3708 | proc_error (pi, "fetch_registers, get_gregs", __LINE__); |
3709 | ||
56be3814 | 3710 | supply_gregset (regcache, (const gdb_gregset_t *) gregs); |
c3f6f71d | 3711 | |
772cf8be | 3712 | if (FP0_REGNUM >= 0) /* Do we have an FPU? */ |
60054393 | 3713 | { |
772cf8be MK |
3714 | gdb_fpregset_t *fpregs; |
3715 | ||
3716 | if ((regnum >= 0 && regnum < FP0_REGNUM) | |
3717 | || regnum == PC_REGNUM | |
772cf8be MK |
3718 | || regnum == SP_REGNUM) |
3719 | return; /* Not a floating point register. */ | |
c5aa993b | 3720 | |
772cf8be MK |
3721 | fpregs = proc_get_fpregs (pi); |
3722 | if (fpregs == NULL) | |
60054393 | 3723 | proc_error (pi, "fetch_registers, get_fpregs", __LINE__); |
c906108c | 3724 | |
56be3814 | 3725 | supply_fpregset (regcache, (const gdb_fpregset_t *) fpregs); |
60054393 | 3726 | } |
c906108c SS |
3727 | } |
3728 | ||
c3f6f71d JM |
3729 | /* Get ready to modify the registers array. On machines which store |
3730 | individual registers, this doesn't need to do anything. On | |
3731 | machines which store all the registers in one fell swoop, such as | |
3732 | /proc, this makes sure that registers contains all the registers | |
3733 | from the program being debugged. */ | |
3734 | ||
c906108c | 3735 | static void |
316f2060 | 3736 | procfs_prepare_to_store (struct regcache *regcache) |
c906108c | 3737 | { |
c906108c SS |
3738 | } |
3739 | ||
772cf8be MK |
3740 | /* Store register REGNUM back into the inferior. If REGNUM is -1, do |
3741 | this for all registers. | |
3742 | ||
3743 | NOTE: Since the /proc interface will not read individual registers, | |
3744 | we will cache these requests until the process is resumed, and only | |
3745 | then write them back to the inferior process. | |
3746 | ||
3747 | FIXME: is that a really bad idea? Have to think about cases where | |
3748 | writing one register might affect the value of others, etc. */ | |
c906108c | 3749 | |
c3f6f71d | 3750 | static void |
56be3814 | 3751 | procfs_store_registers (struct regcache *regcache, int regnum) |
c3f6f71d | 3752 | { |
772cf8be MK |
3753 | gdb_gregset_t *gregs; |
3754 | procinfo *pi; | |
3755 | int pid = PIDGET (inferior_ptid); | |
3756 | int tid = TIDGET (inferior_ptid); | |
c3f6f71d | 3757 | |
772cf8be MK |
3758 | /* First find procinfo for main process. */ |
3759 | pi = find_procinfo_or_die (pid, 0); | |
c3f6f71d | 3760 | |
772cf8be MK |
3761 | /* If the event thread is not the same as GDB's requested thread |
3762 | (ie. inferior_ptid), then look up procinfo for the requested | |
3763 | thread. */ | |
3764 | if (tid != 0 && tid != proc_get_current_thread (pi)) | |
c3f6f71d JM |
3765 | pi = find_procinfo_or_die (pid, tid); |
3766 | ||
3767 | if (pi == NULL) | |
8a3fe4f8 | 3768 | error (_("procfs: store_registers: failed to find procinfo for %s"), |
39f77062 | 3769 | target_pid_to_str (inferior_ptid)); |
c906108c | 3770 | |
772cf8be MK |
3771 | gregs = proc_get_gregs (pi); |
3772 | if (gregs == NULL) | |
c3f6f71d | 3773 | proc_error (pi, "store_registers, get_gregs", __LINE__); |
c906108c | 3774 | |
56be3814 | 3775 | fill_gregset (regcache, gregs, regnum); |
c3f6f71d JM |
3776 | if (!proc_set_gregs (pi)) |
3777 | proc_error (pi, "store_registers, set_gregs", __LINE__); | |
c906108c | 3778 | |
772cf8be | 3779 | if (FP0_REGNUM >= 0) /* Do we have an FPU? */ |
60054393 | 3780 | { |
772cf8be MK |
3781 | gdb_fpregset_t *fpregs; |
3782 | ||
3783 | if ((regnum >= 0 && regnum < FP0_REGNUM) | |
3784 | || regnum == PC_REGNUM | |
772cf8be MK |
3785 | || regnum == SP_REGNUM) |
3786 | return; /* Not a floating point register. */ | |
60054393 | 3787 | |
772cf8be MK |
3788 | fpregs = proc_get_fpregs (pi); |
3789 | if (fpregs == NULL) | |
60054393 MS |
3790 | proc_error (pi, "store_registers, get_fpregs", __LINE__); |
3791 | ||
56be3814 | 3792 | fill_fpregset (regcache, fpregs, regnum); |
60054393 MS |
3793 | if (!proc_set_fpregs (pi)) |
3794 | proc_error (pi, "store_registers, set_fpregs", __LINE__); | |
3795 | } | |
c3f6f71d | 3796 | } |
c906108c | 3797 | |
37de36c6 KB |
3798 | static int |
3799 | syscall_is_lwp_exit (procinfo *pi, int scall) | |
3800 | { | |
3801 | ||
3802 | #ifdef SYS_lwp_exit | |
3803 | if (scall == SYS_lwp_exit) | |
3804 | return 1; | |
3805 | #endif | |
3806 | #ifdef SYS_lwpexit | |
3807 | if (scall == SYS_lwpexit) | |
3808 | return 1; | |
3809 | #endif | |
3810 | return 0; | |
3811 | } | |
3812 | ||
3813 | static int | |
3814 | syscall_is_exit (procinfo *pi, int scall) | |
3815 | { | |
3816 | #ifdef SYS_exit | |
3817 | if (scall == SYS_exit) | |
3818 | return 1; | |
3819 | #endif | |
3820 | #ifdef DYNAMIC_SYSCALLS | |
3821 | if (find_syscall (pi, "_exit") == scall) | |
3822 | return 1; | |
3823 | #endif | |
3824 | return 0; | |
3825 | } | |
3826 | ||
3827 | static int | |
3828 | syscall_is_exec (procinfo *pi, int scall) | |
3829 | { | |
3830 | #ifdef SYS_exec | |
3831 | if (scall == SYS_exec) | |
3832 | return 1; | |
3833 | #endif | |
3834 | #ifdef SYS_execv | |
3835 | if (scall == SYS_execv) | |
3836 | return 1; | |
3837 | #endif | |
3838 | #ifdef SYS_execve | |
3839 | if (scall == SYS_execve) | |
3840 | return 1; | |
3841 | #endif | |
3842 | #ifdef DYNAMIC_SYSCALLS | |
3843 | if (find_syscall (pi, "_execve")) | |
3844 | return 1; | |
3845 | if (find_syscall (pi, "ra_execve")) | |
3846 | return 1; | |
3847 | #endif | |
3848 | return 0; | |
3849 | } | |
3850 | ||
3851 | static int | |
3852 | syscall_is_lwp_create (procinfo *pi, int scall) | |
3853 | { | |
3854 | #ifdef SYS_lwp_create | |
3855 | if (scall == SYS_lwp_create) | |
3856 | return 1; | |
3857 | #endif | |
3858 | #ifdef SYS_lwpcreate | |
3859 | if (scall == SYS_lwpcreate) | |
3860 | return 1; | |
3861 | #endif | |
3862 | return 0; | |
3863 | } | |
3864 | ||
c3f6f71d JM |
3865 | /* |
3866 | * Function: target_wait | |
3867 | * | |
3868 | * Retrieve the next stop event from the child process. | |
3869 | * If child has not stopped yet, wait for it to stop. | |
3870 | * Translate /proc eventcodes (or possibly wait eventcodes) | |
3871 | * into gdb internal event codes. | |
3872 | * | |
3873 | * Return: id of process (and possibly thread) that incurred the event. | |
3874 | * event codes are returned thru a pointer parameter. | |
c906108c SS |
3875 | */ |
3876 | ||
39f77062 KB |
3877 | static ptid_t |
3878 | procfs_wait (ptid_t ptid, struct target_waitstatus *status) | |
c906108c | 3879 | { |
c3f6f71d JM |
3880 | /* First cut: loosely based on original version 2.1 */ |
3881 | procinfo *pi; | |
39f77062 KB |
3882 | int wstat; |
3883 | int temp_tid; | |
3884 | ptid_t retval, temp_ptid; | |
c3f6f71d JM |
3885 | int why, what, flags; |
3886 | int retry = 0; | |
c906108c | 3887 | |
c3f6f71d | 3888 | wait_again: |
c906108c | 3889 | |
c3f6f71d JM |
3890 | retry++; |
3891 | wstat = 0; | |
39f77062 | 3892 | retval = pid_to_ptid (-1); |
c906108c | 3893 | |
c3f6f71d | 3894 | /* Find procinfo for main process */ |
39f77062 | 3895 | pi = find_procinfo_or_die (PIDGET (inferior_ptid), 0); |
c3f6f71d | 3896 | if (pi) |
c906108c | 3897 | { |
c3f6f71d JM |
3898 | /* We must assume that the status is stale now... */ |
3899 | pi->status_valid = 0; | |
3900 | pi->gregs_valid = 0; | |
3901 | pi->fpregs_valid = 0; | |
3902 | ||
3903 | #if 0 /* just try this out... */ | |
3904 | flags = proc_flags (pi); | |
3905 | why = proc_why (pi); | |
3906 | if ((flags & PR_STOPPED) && (why == PR_REQUESTED)) | |
3907 | pi->status_valid = 0; /* re-read again, IMMEDIATELY... */ | |
3908 | #endif | |
3909 | /* If child is not stopped, wait for it to stop. */ | |
3910 | if (!(proc_flags (pi) & (PR_STOPPED | PR_ISTOP)) && | |
3911 | !proc_wait_for_stop (pi)) | |
c906108c | 3912 | { |
c3f6f71d JM |
3913 | /* wait_for_stop failed: has the child terminated? */ |
3914 | if (errno == ENOENT) | |
c906108c | 3915 | { |
39f77062 KB |
3916 | int wait_retval; |
3917 | ||
c3f6f71d | 3918 | /* /proc file not found; presumably child has terminated. */ |
39f77062 | 3919 | wait_retval = wait (&wstat); /* "wait" for the child's exit */ |
c3f6f71d | 3920 | |
39f77062 | 3921 | if (wait_retval != PIDGET (inferior_ptid)) /* wrong child? */ |
8a3fe4f8 | 3922 | error (_("procfs: couldn't stop process %d: wait returned %d."), |
39f77062 | 3923 | PIDGET (inferior_ptid), wait_retval); |
c3f6f71d JM |
3924 | /* FIXME: might I not just use waitpid? |
3925 | Or try find_procinfo to see if I know about this child? */ | |
39f77062 | 3926 | retval = pid_to_ptid (wait_retval); |
c906108c | 3927 | } |
d1566ff5 FN |
3928 | else if (errno == EINTR) |
3929 | goto wait_again; | |
c3f6f71d | 3930 | else |
c906108c | 3931 | { |
c3f6f71d JM |
3932 | /* Unknown error from wait_for_stop. */ |
3933 | proc_error (pi, "target_wait (wait_for_stop)", __LINE__); | |
c906108c | 3934 | } |
c3f6f71d JM |
3935 | } |
3936 | else | |
3937 | { | |
3938 | /* This long block is reached if either: | |
3939 | a) the child was already stopped, or | |
3940 | b) we successfully waited for the child with wait_for_stop. | |
3941 | This block will analyze the /proc status, and translate it | |
3942 | into a waitstatus for GDB. | |
3943 | ||
3944 | If we actually had to call wait because the /proc file | |
19958708 | 3945 | is gone (child terminated), then we skip this block, |
c3f6f71d JM |
3946 | because we already have a waitstatus. */ |
3947 | ||
3948 | flags = proc_flags (pi); | |
3949 | why = proc_why (pi); | |
3950 | what = proc_what (pi); | |
3951 | ||
c3f6f71d | 3952 | if (flags & (PR_STOPPED | PR_ISTOP)) |
c906108c | 3953 | { |
c3f6f71d JM |
3954 | #ifdef PR_ASYNC |
3955 | /* If it's running async (for single_thread control), | |
3956 | set it back to normal again. */ | |
3957 | if (flags & PR_ASYNC) | |
3958 | if (!proc_unset_async (pi)) | |
3959 | proc_error (pi, "target_wait, unset_async", __LINE__); | |
3960 | #endif | |
3961 | ||
3962 | if (info_verbose) | |
3963 | proc_prettyprint_why (why, what, 1); | |
3964 | ||
3965 | /* The 'pid' we will return to GDB is composed of | |
3966 | the process ID plus the lwp ID. */ | |
3967 | retval = MERGEPID (pi->pid, proc_get_current_thread (pi)); | |
3968 | ||
3969 | switch (why) { | |
3970 | case PR_SIGNALLED: | |
3971 | wstat = (what << 8) | 0177; | |
3972 | break; | |
3973 | case PR_SYSENTRY: | |
37de36c6 | 3974 | if (syscall_is_lwp_exit (pi, what)) |
c3f6f71d | 3975 | { |
a3f17187 | 3976 | printf_filtered (_("[%s exited]\n"), |
37de36c6 KB |
3977 | target_pid_to_str (retval)); |
3978 | delete_thread (retval); | |
3979 | status->kind = TARGET_WAITKIND_SPURIOUS; | |
3980 | return retval; | |
3981 | } | |
3982 | else if (syscall_is_exit (pi, what)) | |
3983 | { | |
3984 | /* Handle SYS_exit call only */ | |
3985 | /* Stopped at entry to SYS_exit. | |
19958708 | 3986 | Make it runnable, resume it, then use |
37de36c6 | 3987 | the wait system call to get its exit code. |
19958708 | 3988 | Proc_run_process always clears the current |
37de36c6 KB |
3989 | fault and signal. |
3990 | Then return its exit status. */ | |
3991 | pi->status_valid = 0; | |
3992 | wstat = 0; | |
19958708 | 3993 | /* FIXME: what we should do is return |
37de36c6 KB |
3994 | TARGET_WAITKIND_SPURIOUS. */ |
3995 | if (!proc_run_process (pi, 0, 0)) | |
3996 | proc_error (pi, "target_wait, run_process", __LINE__); | |
3997 | if (attach_flag) | |
c3f6f71d | 3998 | { |
19958708 | 3999 | /* Don't call wait: simulate waiting for exit, |
37de36c6 KB |
4000 | return a "success" exit code. Bogus: what if |
4001 | it returns something else? */ | |
4002 | wstat = 0; | |
39f77062 | 4003 | retval = inferior_ptid; /* ? ? ? */ |
37de36c6 KB |
4004 | } |
4005 | else | |
4006 | { | |
4007 | int temp = wait (&wstat); | |
4008 | ||
4009 | /* FIXME: shouldn't I make sure I get the right | |
4010 | event from the right process? If (for | |
4011 | instance) I have killed an earlier inferior | |
4012 | process but failed to clean up after it | |
4013 | somehow, I could get its termination event | |
4014 | here. */ | |
4015 | ||
4016 | /* If wait returns -1, that's what we return to GDB. */ | |
4017 | if (temp < 0) | |
39f77062 | 4018 | retval = pid_to_ptid (temp); |
c3f6f71d | 4019 | } |
c3f6f71d | 4020 | } |
37de36c6 KB |
4021 | else |
4022 | { | |
a3f17187 | 4023 | printf_filtered (_("procfs: trapped on entry to ")); |
37de36c6 KB |
4024 | proc_prettyprint_syscall (proc_what (pi), 0); |
4025 | printf_filtered ("\n"); | |
4026 | #ifndef PIOCSSPCACT | |
c3f6f71d | 4027 | { |
37de36c6 | 4028 | long i, nsysargs, *sysargs; |
c3f6f71d | 4029 | |
37de36c6 KB |
4030 | if ((nsysargs = proc_nsysarg (pi)) > 0 && |
4031 | (sysargs = proc_sysargs (pi)) != NULL) | |
4032 | { | |
a3f17187 | 4033 | printf_filtered (_("%ld syscall arguments:\n"), nsysargs); |
37de36c6 | 4034 | for (i = 0; i < nsysargs; i++) |
19958708 | 4035 | printf_filtered ("#%ld: 0x%08lx\n", |
37de36c6 KB |
4036 | i, sysargs[i]); |
4037 | } | |
c3f6f71d | 4038 | |
c3f6f71d | 4039 | } |
c3f6f71d | 4040 | #endif |
37de36c6 KB |
4041 | if (status) |
4042 | { | |
4043 | /* How to exit gracefully, returning "unknown event" */ | |
4044 | status->kind = TARGET_WAITKIND_SPURIOUS; | |
39f77062 | 4045 | return inferior_ptid; |
37de36c6 KB |
4046 | } |
4047 | else | |
4048 | { | |
4049 | /* How to keep going without returning to wfi: */ | |
39f77062 | 4050 | target_resume (ptid, 0, TARGET_SIGNAL_0); |
37de36c6 KB |
4051 | goto wait_again; |
4052 | } | |
4053 | } | |
4054 | break; | |
4055 | case PR_SYSEXIT: | |
4056 | if (syscall_is_exec (pi, what)) | |
c3f6f71d | 4057 | { |
37de36c6 KB |
4058 | /* Hopefully this is our own "fork-child" execing |
4059 | the real child. Hoax this event into a trap, and | |
4060 | GDB will see the child about to execute its start | |
4061 | address. */ | |
4062 | wstat = (SIGTRAP << 8) | 0177; | |
4063 | } | |
9185ddce JB |
4064 | #ifdef SYS_syssgi |
4065 | else if (what == SYS_syssgi) | |
4066 | { | |
4067 | /* see if we can break on dbx_link(). If yes, then | |
4068 | we no longer need the SYS_syssgi notifications. */ | |
4069 | if (insert_dbx_link_breakpoint (pi)) | |
4070 | proc_trace_syscalls_1 (pi, SYS_syssgi, PR_SYSEXIT, | |
4071 | FLAG_RESET, 0); | |
4072 | ||
4073 | /* This is an internal event and should be transparent | |
4074 | to wfi, so resume the execution and wait again. See | |
4075 | comment in procfs_init_inferior() for more details. */ | |
4076 | target_resume (ptid, 0, TARGET_SIGNAL_0); | |
4077 | goto wait_again; | |
4078 | } | |
4079 | #endif | |
37de36c6 KB |
4080 | else if (syscall_is_lwp_create (pi, what)) |
4081 | { | |
4082 | /* | |
4083 | * This syscall is somewhat like fork/exec. | |
4084 | * We will get the event twice: once for the parent LWP, | |
4085 | * and once for the child. We should already know about | |
4086 | * the parent LWP, but the child will be new to us. So, | |
4087 | * whenever we get this event, if it represents a new | |
4088 | * thread, simply add the thread to the list. | |
4089 | */ | |
c3f6f71d | 4090 | |
37de36c6 | 4091 | /* If not in procinfo list, add it. */ |
39f77062 KB |
4092 | temp_tid = proc_get_current_thread (pi); |
4093 | if (!find_procinfo (pi->pid, temp_tid)) | |
4094 | create_procinfo (pi->pid, temp_tid); | |
37de36c6 | 4095 | |
39f77062 | 4096 | temp_ptid = MERGEPID (pi->pid, temp_tid); |
37de36c6 | 4097 | /* If not in GDB's thread list, add it. */ |
39f77062 | 4098 | if (!in_thread_list (temp_ptid)) |
c3f6f71d | 4099 | { |
a3f17187 | 4100 | printf_filtered (_("[New %s]\n"), |
39f77062 KB |
4101 | target_pid_to_str (temp_ptid)); |
4102 | add_thread (temp_ptid); | |
c3f6f71d | 4103 | } |
37de36c6 KB |
4104 | /* Return to WFI, but tell it to immediately resume. */ |
4105 | status->kind = TARGET_WAITKIND_SPURIOUS; | |
39f77062 | 4106 | return inferior_ptid; |
37de36c6 KB |
4107 | } |
4108 | else if (syscall_is_lwp_exit (pi, what)) | |
4109 | { | |
a3f17187 | 4110 | printf_filtered (_("[%s exited]\n"), |
37de36c6 KB |
4111 | target_pid_to_str (retval)); |
4112 | delete_thread (retval); | |
4113 | status->kind = TARGET_WAITKIND_SPURIOUS; | |
4114 | return retval; | |
c3f6f71d | 4115 | } |
37de36c6 KB |
4116 | else if (0) |
4117 | { | |
4118 | /* FIXME: Do we need to handle SYS_sproc, | |
4119 | SYS_fork, or SYS_vfork here? The old procfs | |
4120 | seemed to use this event to handle threads on | |
4121 | older (non-LWP) systems, where I'm assuming | |
19958708 | 4122 | that threads were actually separate processes. |
37de36c6 KB |
4123 | Irix, maybe? Anyway, low priority for now. */ |
4124 | } | |
4125 | else | |
4126 | { | |
a3f17187 | 4127 | printf_filtered (_("procfs: trapped on exit from ")); |
37de36c6 KB |
4128 | proc_prettyprint_syscall (proc_what (pi), 0); |
4129 | printf_filtered ("\n"); | |
4130 | #ifndef PIOCSSPCACT | |
4131 | { | |
4132 | long i, nsysargs, *sysargs; | |
4133 | ||
4134 | if ((nsysargs = proc_nsysarg (pi)) > 0 && | |
4135 | (sysargs = proc_sysargs (pi)) != NULL) | |
4136 | { | |
a3f17187 | 4137 | printf_filtered (_("%ld syscall arguments:\n"), nsysargs); |
37de36c6 | 4138 | for (i = 0; i < nsysargs; i++) |
19958708 | 4139 | printf_filtered ("#%ld: 0x%08lx\n", |
37de36c6 KB |
4140 | i, sysargs[i]); |
4141 | } | |
4142 | } | |
c3f6f71d | 4143 | #endif |
37de36c6 | 4144 | status->kind = TARGET_WAITKIND_SPURIOUS; |
39f77062 | 4145 | return inferior_ptid; |
37de36c6 | 4146 | } |
c3f6f71d JM |
4147 | break; |
4148 | case PR_REQUESTED: | |
4149 | #if 0 /* FIXME */ | |
4150 | wstat = (SIGSTOP << 8) | 0177; | |
4151 | break; | |
4152 | #else | |
4153 | if (retry < 5) | |
4154 | { | |
a3f17187 | 4155 | printf_filtered (_("Retry #%d:\n"), retry); |
c3f6f71d JM |
4156 | pi->status_valid = 0; |
4157 | goto wait_again; | |
4158 | } | |
4159 | else | |
4160 | { | |
4161 | /* If not in procinfo list, add it. */ | |
39f77062 KB |
4162 | temp_tid = proc_get_current_thread (pi); |
4163 | if (!find_procinfo (pi->pid, temp_tid)) | |
4164 | create_procinfo (pi->pid, temp_tid); | |
c3f6f71d JM |
4165 | |
4166 | /* If not in GDB's thread list, add it. */ | |
39f77062 KB |
4167 | temp_ptid = MERGEPID (pi->pid, temp_tid); |
4168 | if (!in_thread_list (temp_ptid)) | |
c3f6f71d | 4169 | { |
a3f17187 | 4170 | printf_filtered (_("[New %s]\n"), |
39f77062 KB |
4171 | target_pid_to_str (temp_ptid)); |
4172 | add_thread (temp_ptid); | |
c3f6f71d JM |
4173 | } |
4174 | ||
4175 | status->kind = TARGET_WAITKIND_STOPPED; | |
4176 | status->value.sig = 0; | |
4177 | return retval; | |
4178 | } | |
4179 | #endif | |
4180 | case PR_JOBCONTROL: | |
4181 | wstat = (what << 8) | 0177; | |
4182 | break; | |
4183 | case PR_FAULTED: | |
7af6341f | 4184 | switch (what) { |
c3f6f71d JM |
4185 | #ifdef FLTWATCH |
4186 | case FLTWATCH: | |
4187 | wstat = (SIGTRAP << 8) | 0177; | |
4188 | break; | |
4189 | #endif | |
4190 | #ifdef FLTKWATCH | |
4191 | case FLTKWATCH: | |
4192 | wstat = (SIGTRAP << 8) | 0177; | |
4193 | break; | |
4194 | #endif | |
4195 | /* FIXME: use si_signo where possible. */ | |
4196 | case FLTPRIV: | |
4197 | #if (FLTILL != FLTPRIV) /* avoid "duplicate case" error */ | |
4198 | case FLTILL: | |
4199 | #endif | |
4200 | wstat = (SIGILL << 8) | 0177; | |
4201 | break; | |
4202 | case FLTBPT: | |
4203 | #if (FLTTRACE != FLTBPT) /* avoid "duplicate case" error */ | |
4204 | case FLTTRACE: | |
4205 | #endif | |
9185ddce JB |
4206 | /* If we hit our __dbx_link() internal breakpoint, |
4207 | then remove it. See comments in procfs_init_inferior() | |
4208 | for more details. */ | |
4209 | if (dbx_link_bpt_addr != 0 | |
4210 | && dbx_link_bpt_addr == read_pc ()) | |
4211 | remove_dbx_link_breakpoint (); | |
4212 | ||
c3f6f71d JM |
4213 | wstat = (SIGTRAP << 8) | 0177; |
4214 | break; | |
4215 | case FLTSTACK: | |
4216 | case FLTACCESS: | |
4217 | #if (FLTBOUNDS != FLTSTACK) /* avoid "duplicate case" error */ | |
4218 | case FLTBOUNDS: | |
4219 | #endif | |
4220 | wstat = (SIGSEGV << 8) | 0177; | |
4221 | break; | |
4222 | case FLTIOVF: | |
4223 | case FLTIZDIV: | |
4224 | #if (FLTFPE != FLTIOVF) /* avoid "duplicate case" error */ | |
4225 | case FLTFPE: | |
4226 | #endif | |
4227 | wstat = (SIGFPE << 8) | 0177; | |
4228 | break; | |
4229 | case FLTPAGE: /* Recoverable page fault */ | |
4230 | default: /* FIXME: use si_signo if possible for fault */ | |
39f77062 | 4231 | retval = pid_to_ptid (-1); |
c3f6f71d | 4232 | printf_filtered ("procfs:%d -- ", __LINE__); |
a3f17187 | 4233 | printf_filtered (_("child stopped for unknown reason:\n")); |
c3f6f71d | 4234 | proc_prettyprint_why (why, what, 1); |
8a3fe4f8 | 4235 | error (_("... giving up...")); |
c3f6f71d JM |
4236 | break; |
4237 | } | |
4238 | break; /* case PR_FAULTED: */ | |
4239 | default: /* switch (why) unmatched */ | |
4240 | printf_filtered ("procfs:%d -- ", __LINE__); | |
a3f17187 | 4241 | printf_filtered (_("child stopped for unknown reason:\n")); |
c3f6f71d | 4242 | proc_prettyprint_why (why, what, 1); |
8a3fe4f8 | 4243 | error (_("... giving up...")); |
c3f6f71d JM |
4244 | break; |
4245 | } | |
4246 | /* | |
4247 | * Got this far without error: | |
4248 | * If retval isn't in the threads database, add it. | |
4249 | */ | |
39f77062 KB |
4250 | if (PIDGET (retval) > 0 && |
4251 | !ptid_equal (retval, inferior_ptid) && | |
c3f6f71d | 4252 | !in_thread_list (retval)) |
c906108c | 4253 | { |
c3f6f71d | 4254 | /* |
19958708 | 4255 | * We have a new thread. |
c3f6f71d | 4256 | * We need to add it both to GDB's list and to our own. |
19958708 | 4257 | * If we don't create a procinfo, resume may be unhappy |
c3f6f71d JM |
4258 | * later. |
4259 | */ | |
a3f17187 | 4260 | printf_filtered (_("[New %s]\n"), target_pid_to_str (retval)); |
c3f6f71d JM |
4261 | add_thread (retval); |
4262 | if (find_procinfo (PIDGET (retval), TIDGET (retval)) == NULL) | |
4263 | create_procinfo (PIDGET (retval), TIDGET (retval)); | |
4264 | ||
4265 | /* In addition, it's possible that this is the first | |
19958708 | 4266 | * new thread we've seen, in which case we may not |
39f77062 | 4267 | * have created entries for inferior_ptid yet. |
c3f6f71d | 4268 | */ |
39f77062 | 4269 | if (TIDGET (inferior_ptid) != 0) |
c3f6f71d | 4270 | { |
39f77062 KB |
4271 | if (!in_thread_list (inferior_ptid)) |
4272 | add_thread (inferior_ptid); | |
19958708 | 4273 | if (find_procinfo (PIDGET (inferior_ptid), |
39f77062 | 4274 | TIDGET (inferior_ptid)) == NULL) |
19958708 | 4275 | create_procinfo (PIDGET (inferior_ptid), |
39f77062 | 4276 | TIDGET (inferior_ptid)); |
c3f6f71d | 4277 | } |
c906108c | 4278 | } |
c906108c | 4279 | } |
c3f6f71d | 4280 | else /* flags do not indicate STOPPED */ |
c906108c | 4281 | { |
c3f6f71d JM |
4282 | /* surely this can't happen... */ |
4283 | printf_filtered ("procfs:%d -- process not stopped.\n", | |
4284 | __LINE__); | |
4285 | proc_prettyprint_flags (flags, 1); | |
8a3fe4f8 | 4286 | error (_("procfs: ...giving up...")); |
c906108c | 4287 | } |
c906108c | 4288 | } |
c906108c | 4289 | |
c3f6f71d JM |
4290 | if (status) |
4291 | store_waitstatus (status, wstat); | |
c906108c SS |
4292 | } |
4293 | ||
c3f6f71d JM |
4294 | return retval; |
4295 | } | |
c906108c | 4296 | |
4e73f23d RM |
4297 | /* Perform a partial transfer to/from the specified object. For |
4298 | memory transfers, fall back to the old memory xfer functions. */ | |
4299 | ||
4300 | static LONGEST | |
4301 | procfs_xfer_partial (struct target_ops *ops, enum target_object object, | |
4302 | const char *annex, void *readbuf, | |
4303 | const void *writebuf, ULONGEST offset, LONGEST len) | |
4304 | { | |
4305 | switch (object) | |
4306 | { | |
4307 | case TARGET_OBJECT_MEMORY: | |
4308 | if (readbuf) | |
c8e73a31 AC |
4309 | return (*ops->deprecated_xfer_memory) (offset, readbuf, len, |
4310 | 0/*write*/, NULL, ops); | |
4e73f23d | 4311 | if (writebuf) |
c8e73a31 AC |
4312 | return (*ops->deprecated_xfer_memory) (offset, writebuf, len, |
4313 | 1/*write*/, NULL, ops); | |
4e73f23d RM |
4314 | return -1; |
4315 | ||
4316 | #ifdef NEW_PROC_API | |
4317 | case TARGET_OBJECT_AUXV: | |
4318 | return procfs_xfer_auxv (ops, object, annex, readbuf, writebuf, | |
4319 | offset, len); | |
4320 | #endif | |
4321 | ||
4322 | default: | |
4323 | if (ops->beneath != NULL) | |
4324 | return ops->beneath->to_xfer_partial (ops->beneath, object, annex, | |
4325 | readbuf, writebuf, offset, len); | |
4326 | return -1; | |
4327 | } | |
4328 | } | |
4329 | ||
4330 | ||
d0849a9a KB |
4331 | /* Transfer LEN bytes between GDB address MYADDR and target address |
4332 | MEMADDR. If DOWRITE is non-zero, transfer them to the target, | |
4333 | otherwise transfer them from the target. TARGET is unused. | |
4334 | ||
4335 | The return value is 0 if an error occurred or no bytes were | |
4336 | transferred. Otherwise, it will be a positive value which | |
4337 | indicates the number of bytes transferred between gdb and the | |
4338 | target. (Note that the interface also makes provisions for | |
4339 | negative values, but this capability isn't implemented here.) */ | |
4340 | ||
c3f6f71d | 4341 | static int |
d0849a9a | 4342 | procfs_xfer_memory (CORE_ADDR memaddr, char *myaddr, int len, int dowrite, |
37de36c6 | 4343 | struct mem_attrib *attrib, struct target_ops *target) |
c3f6f71d JM |
4344 | { |
4345 | procinfo *pi; | |
4346 | int nbytes = 0; | |
c906108c | 4347 | |
c3f6f71d | 4348 | /* Find procinfo for main process */ |
39f77062 | 4349 | pi = find_procinfo_or_die (PIDGET (inferior_ptid), 0); |
c3f6f71d JM |
4350 | if (pi->as_fd == 0 && |
4351 | open_procinfo_files (pi, FD_AS) == 0) | |
c906108c | 4352 | { |
c3f6f71d JM |
4353 | proc_warn (pi, "xfer_memory, open_proc_files", __LINE__); |
4354 | return 0; | |
c906108c | 4355 | } |
c906108c | 4356 | |
c3f6f71d | 4357 | if (lseek (pi->as_fd, (off_t) memaddr, SEEK_SET) == (off_t) memaddr) |
c906108c | 4358 | { |
c3f6f71d | 4359 | if (dowrite) |
c906108c | 4360 | { |
c3f6f71d JM |
4361 | #ifdef NEW_PROC_API |
4362 | PROCFS_NOTE ("write memory: "); | |
c906108c | 4363 | #else |
c3f6f71d | 4364 | PROCFS_NOTE ("write memory: \n"); |
c906108c | 4365 | #endif |
c3f6f71d | 4366 | nbytes = write (pi->as_fd, myaddr, len); |
c906108c | 4367 | } |
c3f6f71d | 4368 | else |
c906108c | 4369 | { |
c3f6f71d JM |
4370 | PROCFS_NOTE ("read memory: \n"); |
4371 | nbytes = read (pi->as_fd, myaddr, len); | |
c906108c | 4372 | } |
c3f6f71d | 4373 | if (nbytes < 0) |
c906108c | 4374 | { |
c3f6f71d | 4375 | nbytes = 0; |
c906108c | 4376 | } |
c906108c | 4377 | } |
c3f6f71d | 4378 | return nbytes; |
c906108c SS |
4379 | } |
4380 | ||
4381 | /* | |
c3f6f71d JM |
4382 | * Function: invalidate_cache |
4383 | * | |
4384 | * Called by target_resume before making child runnable. | |
4385 | * Mark cached registers and status's invalid. | |
4386 | * If there are "dirty" caches that need to be written back | |
4387 | * to the child process, do that. | |
4388 | * | |
19958708 | 4389 | * File descriptors are also cached. |
c3f6f71d JM |
4390 | * As they are a limited resource, we cannot hold onto them indefinitely. |
4391 | * However, as they are expensive to open, we don't want to throw them | |
4392 | * away indescriminately either. As a compromise, we will keep the | |
4393 | * file descriptors for the parent process, but discard any file | |
4394 | * descriptors we may have accumulated for the threads. | |
4395 | * | |
4396 | * Return value: | |
19958708 | 4397 | * As this function is called by iterate_over_threads, it always |
c3f6f71d | 4398 | * returns zero (so that iterate_over_threads will keep iterating). |
c906108c SS |
4399 | */ |
4400 | ||
c3f6f71d JM |
4401 | |
4402 | static int | |
fba45db2 | 4403 | invalidate_cache (procinfo *parent, procinfo *pi, void *ptr) |
c906108c | 4404 | { |
c3f6f71d JM |
4405 | /* |
4406 | * About to run the child; invalidate caches and do any other cleanup. | |
4407 | */ | |
c906108c | 4408 | |
c3f6f71d JM |
4409 | #if 0 |
4410 | if (pi->gregs_dirty) | |
4411 | if (parent == NULL || | |
4412 | proc_get_current_thread (parent) != pi->tid) | |
4413 | if (!proc_set_gregs (pi)) /* flush gregs cache */ | |
4414 | proc_warn (pi, "target_resume, set_gregs", | |
4415 | __LINE__); | |
60054393 MS |
4416 | if (FP0_REGNUM >= 0) |
4417 | if (pi->fpregs_dirty) | |
4418 | if (parent == NULL || | |
4419 | proc_get_current_thread (parent) != pi->tid) | |
4420 | if (!proc_set_fpregs (pi)) /* flush fpregs cache */ | |
19958708 | 4421 | proc_warn (pi, "target_resume, set_fpregs", |
60054393 | 4422 | __LINE__); |
c906108c | 4423 | #endif |
c906108c | 4424 | |
c3f6f71d | 4425 | if (parent != NULL) |
c906108c | 4426 | { |
c3f6f71d | 4427 | /* The presence of a parent indicates that this is an LWP. |
19958708 | 4428 | Close any file descriptors that it might have open. |
c3f6f71d JM |
4429 | We don't do this to the master (parent) procinfo. */ |
4430 | ||
4431 | close_procinfo_files (pi); | |
c906108c | 4432 | } |
c3f6f71d JM |
4433 | pi->gregs_valid = 0; |
4434 | pi->fpregs_valid = 0; | |
4435 | #if 0 | |
4436 | pi->gregs_dirty = 0; | |
4437 | pi->fpregs_dirty = 0; | |
c906108c | 4438 | #endif |
c3f6f71d JM |
4439 | pi->status_valid = 0; |
4440 | pi->threads_valid = 0; | |
c906108c | 4441 | |
c3f6f71d | 4442 | return 0; |
c906108c SS |
4443 | } |
4444 | ||
0fda6bd2 | 4445 | #if 0 |
c906108c | 4446 | /* |
c3f6f71d JM |
4447 | * Function: make_signal_thread_runnable |
4448 | * | |
4449 | * A callback function for iterate_over_threads. | |
4450 | * Find the asynchronous signal thread, and make it runnable. | |
4451 | * See if that helps matters any. | |
c906108c SS |
4452 | */ |
4453 | ||
c3f6f71d | 4454 | static int |
fba45db2 | 4455 | make_signal_thread_runnable (procinfo *process, procinfo *pi, void *ptr) |
c906108c | 4456 | { |
c3f6f71d JM |
4457 | #ifdef PR_ASLWP |
4458 | if (proc_flags (pi) & PR_ASLWP) | |
c906108c | 4459 | { |
c3f6f71d JM |
4460 | if (!proc_run_process (pi, 0, -1)) |
4461 | proc_error (pi, "make_signal_thread_runnable", __LINE__); | |
4462 | return 1; | |
c906108c | 4463 | } |
c906108c | 4464 | #endif |
c3f6f71d | 4465 | return 0; |
c906108c | 4466 | } |
0fda6bd2 | 4467 | #endif |
c906108c SS |
4468 | |
4469 | /* | |
c3f6f71d JM |
4470 | * Function: target_resume |
4471 | * | |
4472 | * Make the child process runnable. Normally we will then call | |
4473 | * procfs_wait and wait for it to stop again (unles gdb is async). | |
4474 | * | |
4475 | * Arguments: | |
19958708 | 4476 | * step: if true, then arrange for the child to stop again |
c3f6f71d JM |
4477 | * after executing a single instruction. |
4478 | * signo: if zero, then cancel any pending signal. | |
19958708 | 4479 | * If non-zero, then arrange for the indicated signal |
c3f6f71d JM |
4480 | * to be delivered to the child when it runs. |
4481 | * pid: if -1, then allow any child thread to run. | |
4482 | * if non-zero, then allow only the indicated thread to run. | |
4483 | ******* (not implemented yet) | |
c906108c SS |
4484 | */ |
4485 | ||
4486 | static void | |
39f77062 | 4487 | procfs_resume (ptid_t ptid, int step, enum target_signal signo) |
c906108c | 4488 | { |
c3f6f71d JM |
4489 | procinfo *pi, *thread; |
4490 | int native_signo; | |
4491 | ||
19958708 | 4492 | /* 2.1: |
c3f6f71d | 4493 | prrun.prflags |= PRSVADDR; |
19958708 | 4494 | prrun.pr_vaddr = $PC; set resume address |
c3f6f71d | 4495 | prrun.prflags |= PRSTRACE; trace signals in pr_trace (all) |
19958708 | 4496 | prrun.prflags |= PRSFAULT; trace faults in pr_fault (all but PAGE) |
c3f6f71d JM |
4497 | prrun.prflags |= PRCFAULT; clear current fault. |
4498 | ||
4499 | PRSTRACE and PRSFAULT can be done by other means | |
4500 | (proc_trace_signals, proc_trace_faults) | |
4501 | PRSVADDR is unnecessary. | |
4502 | PRCFAULT may be replaced by a PIOCCFAULT call (proc_clear_current_fault) | |
4503 | This basically leaves PRSTEP and PRCSIG. | |
4504 | PRCSIG is like PIOCSSIG (proc_clear_current_signal). | |
4505 | So basically PR_STEP is the sole argument that must be passed | |
4506 | to proc_run_process (for use in the prrun struct by ioctl). */ | |
4507 | ||
4508 | /* Find procinfo for main process */ | |
39f77062 | 4509 | pi = find_procinfo_or_die (PIDGET (inferior_ptid), 0); |
c3f6f71d JM |
4510 | |
4511 | /* First cut: ignore pid argument */ | |
4512 | errno = 0; | |
c906108c | 4513 | |
c3f6f71d JM |
4514 | /* Convert signal to host numbering. */ |
4515 | if (signo == 0 || | |
0fda6bd2 | 4516 | (signo == TARGET_SIGNAL_STOP && pi->ignore_next_sigstop)) |
c3f6f71d JM |
4517 | native_signo = 0; |
4518 | else | |
4519 | native_signo = target_signal_to_host (signo); | |
c906108c | 4520 | |
c3f6f71d | 4521 | pi->ignore_next_sigstop = 0; |
c906108c | 4522 | |
c3f6f71d JM |
4523 | /* Running the process voids all cached registers and status. */ |
4524 | /* Void the threads' caches first */ | |
19958708 | 4525 | proc_iterate_over_threads (pi, invalidate_cache, NULL); |
c3f6f71d JM |
4526 | /* Void the process procinfo's caches. */ |
4527 | invalidate_cache (NULL, pi, NULL); | |
c906108c | 4528 | |
39f77062 | 4529 | if (PIDGET (ptid) != -1) |
c906108c | 4530 | { |
c3f6f71d | 4531 | /* Resume a specific thread, presumably suppressing the others. */ |
39f77062 | 4532 | thread = find_procinfo (PIDGET (ptid), TIDGET (ptid)); |
7de45904 | 4533 | if (thread != NULL) |
c906108c | 4534 | { |
c3f6f71d JM |
4535 | if (thread->tid != 0) |
4536 | { | |
4537 | /* We're to resume a specific thread, and not the others. | |
4538 | * Set the child process's PR_ASYNC flag. | |
4539 | */ | |
4540 | #ifdef PR_ASYNC | |
4541 | if (!proc_set_async (pi)) | |
4542 | proc_error (pi, "target_resume, set_async", __LINE__); | |
4543 | #endif | |
4544 | #if 0 | |
19958708 | 4545 | proc_iterate_over_threads (pi, |
c3f6f71d JM |
4546 | make_signal_thread_runnable, |
4547 | NULL); | |
4548 | #endif | |
4549 | pi = thread; /* substitute the thread's procinfo for run */ | |
4550 | } | |
c906108c SS |
4551 | } |
4552 | } | |
c906108c | 4553 | |
c3f6f71d | 4554 | if (!proc_run_process (pi, step, native_signo)) |
c906108c | 4555 | { |
c3f6f71d | 4556 | if (errno == EBUSY) |
8a3fe4f8 | 4557 | warning (_("resume: target already running. Pretend to resume, and hope for the best!")); |
c3f6f71d JM |
4558 | else |
4559 | proc_error (pi, "target_resume", __LINE__); | |
c906108c | 4560 | } |
c3f6f71d | 4561 | } |
c906108c | 4562 | |
c3f6f71d JM |
4563 | /* |
4564 | * Function: register_gdb_signals | |
4565 | * | |
19958708 | 4566 | * Traverse the list of signals that GDB knows about |
c3f6f71d JM |
4567 | * (see "handle" command), and arrange for the target |
4568 | * to be stopped or not, according to these settings. | |
4569 | * | |
4570 | * Returns non-zero for success, zero for failure. | |
4571 | */ | |
c906108c | 4572 | |
c3f6f71d | 4573 | static int |
37de36c6 | 4574 | register_gdb_signals (procinfo *pi, gdb_sigset_t *signals) |
c3f6f71d JM |
4575 | { |
4576 | int signo; | |
c906108c | 4577 | |
c3f6f71d JM |
4578 | for (signo = 0; signo < NSIG; signo ++) |
4579 | if (signal_stop_state (target_signal_from_host (signo)) == 0 && | |
4580 | signal_print_state (target_signal_from_host (signo)) == 0 && | |
4581 | signal_pass_state (target_signal_from_host (signo)) == 1) | |
4582 | prdelset (signals, signo); | |
4583 | else | |
4584 | praddset (signals, signo); | |
c906108c | 4585 | |
c3f6f71d | 4586 | return proc_set_traced_signals (pi, signals); |
c906108c SS |
4587 | } |
4588 | ||
4589 | /* | |
c3f6f71d JM |
4590 | * Function: target_notice_signals |
4591 | * | |
4592 | * Set up to trace signals in the child process. | |
4593 | */ | |
c906108c | 4594 | |
c3f6f71d | 4595 | static void |
39f77062 | 4596 | procfs_notice_signals (ptid_t ptid) |
c3f6f71d | 4597 | { |
37de36c6 | 4598 | gdb_sigset_t signals; |
39f77062 | 4599 | procinfo *pi = find_procinfo_or_die (PIDGET (ptid), 0); |
c906108c | 4600 | |
c3f6f71d JM |
4601 | if (proc_get_traced_signals (pi, &signals) && |
4602 | register_gdb_signals (pi, &signals)) | |
4603 | return; | |
4604 | else | |
4605 | proc_error (pi, "notice_signals", __LINE__); | |
4606 | } | |
c906108c | 4607 | |
c3f6f71d JM |
4608 | /* |
4609 | * Function: target_files_info | |
4610 | * | |
4611 | * Print status information about the child process. | |
4612 | */ | |
c906108c | 4613 | |
c3f6f71d | 4614 | static void |
fba45db2 | 4615 | procfs_files_info (struct target_ops *ignore) |
c3f6f71d | 4616 | { |
a3f17187 | 4617 | printf_filtered (_("\tUsing the running image of %s %s via /proc.\n"), |
19958708 | 4618 | attach_flag? "attached": "child", |
39f77062 | 4619 | target_pid_to_str (inferior_ptid)); |
c3f6f71d | 4620 | } |
c906108c | 4621 | |
c3f6f71d JM |
4622 | /* |
4623 | * Function: target_open | |
4624 | * | |
4625 | * A dummy: you don't open procfs. | |
c906108c SS |
4626 | */ |
4627 | ||
4628 | static void | |
fba45db2 | 4629 | procfs_open (char *args, int from_tty) |
c906108c | 4630 | { |
8a3fe4f8 | 4631 | error (_("Use the \"run\" command to start a Unix child process.")); |
c3f6f71d | 4632 | } |
c906108c | 4633 | |
c3f6f71d JM |
4634 | /* |
4635 | * Function: target_can_run | |
4636 | * | |
19958708 | 4637 | * This tells GDB that this target vector can be invoked |
c3f6f71d JM |
4638 | * for "run" or "attach". |
4639 | */ | |
c906108c | 4640 | |
c3f6f71d JM |
4641 | int procfs_suppress_run = 0; /* Non-zero if procfs should pretend not to |
4642 | be a runnable target. Used by targets | |
4643 | that can sit atop procfs, such as solaris | |
4644 | thread support. */ | |
c906108c | 4645 | |
c906108c | 4646 | |
c3f6f71d | 4647 | static int |
fba45db2 | 4648 | procfs_can_run (void) |
c3f6f71d JM |
4649 | { |
4650 | /* This variable is controlled by modules that sit atop procfs that | |
4651 | may layer their own process structure atop that provided here. | |
4652 | sol-thread.c does this because of the Solaris two-level thread | |
4653 | model. */ | |
19958708 | 4654 | |
c3f6f71d | 4655 | /* NOTE: possibly obsolete -- use the thread_stratum approach instead. */ |
c906108c | 4656 | |
c3f6f71d JM |
4657 | return !procfs_suppress_run; |
4658 | } | |
c906108c | 4659 | |
c3f6f71d JM |
4660 | /* |
4661 | * Function: target_stop | |
4662 | * | |
4663 | * Stop the child process asynchronously, as when the | |
4664 | * gdb user types control-c or presses a "stop" button. | |
4665 | * | |
4666 | * Works by sending kill(SIGINT) to the child's process group. | |
4667 | */ | |
c906108c | 4668 | |
c3f6f71d | 4669 | static void |
fba45db2 | 4670 | procfs_stop (void) |
c3f6f71d | 4671 | { |
c3f6f71d | 4672 | kill (-inferior_process_group, SIGINT); |
c906108c SS |
4673 | } |
4674 | ||
c906108c | 4675 | /* |
c3f6f71d JM |
4676 | * Function: unconditionally_kill_inferior |
4677 | * | |
4678 | * Make it die. Wait for it to die. Clean up after it. | |
19958708 | 4679 | * Note: this should only be applied to the real process, |
c3f6f71d JM |
4680 | * not to an LWP, because of the check for parent-process. |
4681 | * If we need this to work for an LWP, it needs some more logic. | |
4682 | */ | |
c906108c | 4683 | |
c3f6f71d | 4684 | static void |
fba45db2 | 4685 | unconditionally_kill_inferior (procinfo *pi) |
c3f6f71d JM |
4686 | { |
4687 | int parent_pid; | |
c906108c | 4688 | |
c3f6f71d JM |
4689 | parent_pid = proc_parent_pid (pi); |
4690 | #ifdef PROCFS_NEED_CLEAR_CURSIG_FOR_KILL | |
4691 | /* FIXME: use access functions */ | |
4692 | /* Alpha OSF/1-3.x procfs needs a clear of the current signal | |
4693 | before the PIOCKILL, otherwise it might generate a corrupted core | |
4694 | file for the inferior. */ | |
4695 | if (ioctl (pi->ctl_fd, PIOCSSIG, NULL) < 0) | |
4696 | { | |
4697 | printf_filtered ("unconditionally_kill: SSIG failed!\n"); | |
4698 | } | |
4699 | #endif | |
4700 | #ifdef PROCFS_NEED_PIOCSSIG_FOR_KILL | |
4701 | /* Alpha OSF/1-2.x procfs needs a PIOCSSIG call with a SIGKILL signal | |
4702 | to kill the inferior, otherwise it might remain stopped with a | |
4703 | pending SIGKILL. | |
4704 | We do not check the result of the PIOCSSIG, the inferior might have | |
4705 | died already. */ | |
4706 | { | |
37de36c6 | 4707 | gdb_siginfo_t newsiginfo; |
c906108c | 4708 | |
c3f6f71d JM |
4709 | memset ((char *) &newsiginfo, 0, sizeof (newsiginfo)); |
4710 | newsiginfo.si_signo = SIGKILL; | |
4711 | newsiginfo.si_code = 0; | |
4712 | newsiginfo.si_errno = 0; | |
4713 | newsiginfo.si_pid = getpid (); | |
4714 | newsiginfo.si_uid = getuid (); | |
4715 | /* FIXME: use proc_set_current_signal */ | |
4716 | ioctl (pi->ctl_fd, PIOCSSIG, &newsiginfo); | |
4717 | } | |
4718 | #else /* PROCFS_NEED_PIOCSSIG_FOR_KILL */ | |
4719 | if (!proc_kill (pi, SIGKILL)) | |
103b3ef5 | 4720 | proc_error (pi, "unconditionally_kill, proc_kill", __LINE__); |
c3f6f71d JM |
4721 | #endif /* PROCFS_NEED_PIOCSSIG_FOR_KILL */ |
4722 | destroy_procinfo (pi); | |
c906108c | 4723 | |
c3f6f71d JM |
4724 | /* If pi is GDB's child, wait for it to die. */ |
4725 | if (parent_pid == getpid ()) | |
19958708 | 4726 | /* FIXME: should we use waitpid to make sure we get the right event? |
c3f6f71d JM |
4727 | Should we check the returned event? */ |
4728 | { | |
0d06e24b | 4729 | #if 0 |
c3f6f71d | 4730 | int status, ret; |
c906108c | 4731 | |
c3f6f71d JM |
4732 | ret = waitpid (pi->pid, &status, 0); |
4733 | #else | |
4734 | wait (NULL); | |
4735 | #endif | |
4736 | } | |
4737 | } | |
c906108c | 4738 | |
c3f6f71d JM |
4739 | /* |
4740 | * Function: target_kill_inferior | |
4741 | * | |
4742 | * We're done debugging it, and we want it to go away. | |
4743 | * Then we want GDB to forget all about it. | |
c906108c SS |
4744 | */ |
4745 | ||
19958708 | 4746 | static void |
fba45db2 | 4747 | procfs_kill_inferior (void) |
c906108c | 4748 | { |
39f77062 | 4749 | if (!ptid_equal (inferior_ptid, null_ptid)) /* ? */ |
c3f6f71d JM |
4750 | { |
4751 | /* Find procinfo for main process */ | |
39f77062 | 4752 | procinfo *pi = find_procinfo (PIDGET (inferior_ptid), 0); |
c906108c | 4753 | |
c3f6f71d JM |
4754 | if (pi) |
4755 | unconditionally_kill_inferior (pi); | |
4756 | target_mourn_inferior (); | |
c906108c | 4757 | } |
c3f6f71d JM |
4758 | } |
4759 | ||
4760 | /* | |
4761 | * Function: target_mourn_inferior | |
4762 | * | |
4763 | * Forget we ever debugged this thing! | |
4764 | */ | |
c906108c | 4765 | |
19958708 | 4766 | static void |
fba45db2 | 4767 | procfs_mourn_inferior (void) |
c3f6f71d JM |
4768 | { |
4769 | procinfo *pi; | |
c906108c | 4770 | |
39f77062 | 4771 | if (!ptid_equal (inferior_ptid, null_ptid)) |
c3f6f71d JM |
4772 | { |
4773 | /* Find procinfo for main process */ | |
39f77062 | 4774 | pi = find_procinfo (PIDGET (inferior_ptid), 0); |
c3f6f71d JM |
4775 | if (pi) |
4776 | destroy_procinfo (pi); | |
c906108c | 4777 | } |
c3f6f71d | 4778 | unpush_target (&procfs_ops); |
8181d85f DJ |
4779 | |
4780 | if (dbx_link_bpt != NULL) | |
4781 | { | |
4782 | deprecated_remove_raw_breakpoint (dbx_link_bpt); | |
4783 | dbx_link_bpt_addr = 0; | |
4784 | dbx_link_bpt = NULL; | |
4785 | } | |
4786 | ||
c3f6f71d JM |
4787 | generic_mourn_inferior (); |
4788 | } | |
c906108c | 4789 | |
c3f6f71d JM |
4790 | /* |
4791 | * Function: init_inferior | |
4792 | * | |
19958708 | 4793 | * When GDB forks to create a runnable inferior process, |
c3f6f71d JM |
4794 | * this function is called on the parent side of the fork. |
4795 | * It's job is to do whatever is necessary to make the child | |
4796 | * ready to be debugged, and then wait for the child to synchronize. | |
4797 | */ | |
c906108c | 4798 | |
19958708 | 4799 | static void |
fba45db2 | 4800 | procfs_init_inferior (int pid) |
c3f6f71d JM |
4801 | { |
4802 | procinfo *pi; | |
37de36c6 | 4803 | gdb_sigset_t signals; |
c3f6f71d | 4804 | int fail; |
c906108c | 4805 | |
c3f6f71d JM |
4806 | /* This routine called on the parent side (GDB side) |
4807 | after GDB forks the inferior. */ | |
c906108c | 4808 | |
c3f6f71d | 4809 | push_target (&procfs_ops); |
c906108c | 4810 | |
c3f6f71d JM |
4811 | if ((pi = create_procinfo (pid, 0)) == NULL) |
4812 | perror ("procfs: out of memory in 'init_inferior'"); | |
4813 | ||
4814 | if (!open_procinfo_files (pi, FD_CTL)) | |
4815 | proc_error (pi, "init_inferior, open_proc_files", __LINE__); | |
4816 | ||
4817 | /* | |
4818 | xmalloc // done | |
4819 | open_procinfo_files // done | |
4820 | link list // done | |
4821 | prfillset (trace) | |
4822 | procfs_notice_signals | |
4823 | prfillset (fault) | |
4824 | prdelset (FLTPAGE) | |
4825 | PIOCWSTOP | |
4826 | PIOCSFAULT | |
4827 | */ | |
4828 | ||
4829 | /* If not stopped yet, wait for it to stop. */ | |
4830 | if (!(proc_flags (pi) & PR_STOPPED) && | |
4831 | !(proc_wait_for_stop (pi))) | |
4832 | dead_procinfo (pi, "init_inferior: wait_for_stop failed", KILL); | |
4833 | ||
4834 | /* Save some of the /proc state to be restored if we detach. */ | |
4835 | /* FIXME: Why? In case another debugger was debugging it? | |
4836 | We're it's parent, for Ghu's sake! */ | |
4837 | if (!proc_get_traced_signals (pi, &pi->saved_sigset)) | |
4838 | proc_error (pi, "init_inferior, get_traced_signals", __LINE__); | |
4839 | if (!proc_get_held_signals (pi, &pi->saved_sighold)) | |
4840 | proc_error (pi, "init_inferior, get_held_signals", __LINE__); | |
4841 | if (!proc_get_traced_faults (pi, &pi->saved_fltset)) | |
4842 | proc_error (pi, "init_inferior, get_traced_faults", __LINE__); | |
37de36c6 | 4843 | if (!proc_get_traced_sysentry (pi, pi->saved_entryset)) |
c3f6f71d | 4844 | proc_error (pi, "init_inferior, get_traced_sysentry", __LINE__); |
37de36c6 | 4845 | if (!proc_get_traced_sysexit (pi, pi->saved_exitset)) |
c3f6f71d JM |
4846 | proc_error (pi, "init_inferior, get_traced_sysexit", __LINE__); |
4847 | ||
4848 | /* Register to trace selected signals in the child. */ | |
4849 | prfillset (&signals); | |
4850 | if (!register_gdb_signals (pi, &signals)) | |
4851 | proc_error (pi, "init_inferior, register_signals", __LINE__); | |
4852 | ||
4853 | if ((fail = procfs_debug_inferior (pi)) != 0) | |
4854 | proc_error (pi, "init_inferior (procfs_debug_inferior)", fail); | |
4855 | ||
0d06e24b JM |
4856 | /* FIXME: logically, we should really be turning OFF run-on-last-close, |
4857 | and possibly even turning ON kill-on-last-close at this point. But | |
4858 | I can't make that change without careful testing which I don't have | |
4859 | time to do right now... */ | |
c3f6f71d JM |
4860 | /* Turn on run-on-last-close flag so that the child |
4861 | will die if GDB goes away for some reason. */ | |
4862 | if (!proc_set_run_on_last_close (pi)) | |
4863 | proc_error (pi, "init_inferior, set_RLC", __LINE__); | |
4864 | ||
4865 | /* The 'process ID' we return to GDB is composed of | |
4866 | the actual process ID plus the lwp ID. */ | |
39f77062 | 4867 | inferior_ptid = MERGEPID (pi->pid, proc_get_current_thread (pi)); |
c906108c | 4868 | |
46ac7a5d AC |
4869 | /* Typically two, one trap to exec the shell, one to exec the |
4870 | program being debugged. Defined by "inferior.h". */ | |
c3f6f71d | 4871 | startup_inferior (START_INFERIOR_TRAPS_EXPECTED); |
9185ddce JB |
4872 | |
4873 | #ifdef SYS_syssgi | |
4874 | /* On mips-irix, we need to stop the inferior early enough during | |
4875 | the startup phase in order to be able to load the shared library | |
4876 | symbols and insert the breakpoints that are located in these shared | |
4877 | libraries. Stopping at the program entry point is not good enough | |
4878 | because the -init code is executed before the execution reaches | |
4879 | that point. | |
4880 | ||
4881 | So what we need to do is to insert a breakpoint in the runtime | |
4882 | loader (rld), more precisely in __dbx_link(). This procedure is | |
4883 | called by rld once all shared libraries have been mapped, but before | |
4884 | the -init code is executed. Unfortuantely, this is not straightforward, | |
4885 | as rld is not part of the executable we are running, and thus we need | |
4886 | the inferior to run until rld itself has been mapped in memory. | |
4887 | ||
4888 | For this, we trace all syssgi() syscall exit events. Each time | |
4889 | we detect such an event, we iterate over each text memory maps, | |
4890 | get its associated fd, and scan the symbol table for __dbx_link(). | |
4891 | When found, we know that rld has been mapped, and that we can insert | |
4892 | the breakpoint at the symbol address. Once the dbx_link() breakpoint | |
4893 | has been inserted, the syssgi() notifications are no longer necessary, | |
4894 | so they should be canceled. */ | |
4895 | proc_trace_syscalls_1 (pi, SYS_syssgi, PR_SYSEXIT, FLAG_SET, 0); | |
9185ddce | 4896 | #endif |
c3f6f71d | 4897 | } |
c906108c | 4898 | |
c3f6f71d JM |
4899 | /* |
4900 | * Function: set_exec_trap | |
4901 | * | |
4902 | * When GDB forks to create a new process, this function is called | |
4903 | * on the child side of the fork before GDB exec's the user program. | |
4904 | * Its job is to make the child minimally debuggable, so that the | |
4905 | * parent GDB process can connect to the child and take over. | |
4906 | * This function should do only the minimum to make that possible, | |
4907 | * and to synchronize with the parent process. The parent process | |
4908 | * should take care of the details. | |
4909 | */ | |
4910 | ||
4911 | static void | |
fba45db2 | 4912 | procfs_set_exec_trap (void) |
c3f6f71d JM |
4913 | { |
4914 | /* This routine called on the child side (inferior side) | |
4915 | after GDB forks the inferior. It must use only local variables, | |
4916 | because it may be sharing data space with its parent. */ | |
c906108c | 4917 | |
c3f6f71d | 4918 | procinfo *pi; |
37de36c6 | 4919 | sysset_t *exitset; |
c906108c | 4920 | |
c3f6f71d | 4921 | if ((pi = create_procinfo (getpid (), 0)) == NULL) |
e2e0b3e5 | 4922 | perror_with_name (_("procfs: create_procinfo failed in child.")); |
c906108c | 4923 | |
c3f6f71d JM |
4924 | if (open_procinfo_files (pi, FD_CTL) == 0) |
4925 | { | |
4926 | proc_warn (pi, "set_exec_trap, open_proc_files", __LINE__); | |
4927 | gdb_flush (gdb_stderr); | |
4928 | /* no need to call "dead_procinfo", because we're going to exit. */ | |
4929 | _exit (127); | |
4930 | } | |
c906108c | 4931 | |
c3f6f71d JM |
4932 | #ifdef PRFS_STOPEXEC /* defined on OSF */ |
4933 | /* OSF method for tracing exec syscalls. Quoting: | |
4934 | Under Alpha OSF/1 we have to use a PIOCSSPCACT ioctl to trace | |
4935 | exits from exec system calls because of the user level loader. */ | |
4936 | /* FIXME: make nice and maybe move into an access function. */ | |
4937 | { | |
4938 | int prfs_flags; | |
c906108c | 4939 | |
c3f6f71d JM |
4940 | if (ioctl (pi->ctl_fd, PIOCGSPCACT, &prfs_flags) < 0) |
4941 | { | |
4942 | proc_warn (pi, "set_exec_trap (PIOCGSPCACT)", __LINE__); | |
4943 | gdb_flush (gdb_stderr); | |
4944 | _exit (127); | |
4945 | } | |
4946 | prfs_flags |= PRFS_STOPEXEC; | |
c906108c | 4947 | |
c3f6f71d JM |
4948 | if (ioctl (pi->ctl_fd, PIOCSSPCACT, &prfs_flags) < 0) |
4949 | { | |
4950 | proc_warn (pi, "set_exec_trap (PIOCSSPCACT)", __LINE__); | |
4951 | gdb_flush (gdb_stderr); | |
4952 | _exit (127); | |
4953 | } | |
4954 | } | |
4955 | #else /* not PRFS_STOPEXEC */ | |
4956 | /* Everyone else's (except OSF) method for tracing exec syscalls */ | |
4957 | /* GW: Rationale... | |
4958 | Not all systems with /proc have all the exec* syscalls with the same | |
4959 | names. On the SGI, for example, there is no SYS_exec, but there | |
4960 | *is* a SYS_execv. So, we try to account for that. */ | |
c906108c | 4961 | |
37de36c6 KB |
4962 | exitset = sysset_t_alloc (pi); |
4963 | gdb_premptysysset (exitset); | |
c3f6f71d | 4964 | #ifdef SYS_exec |
37de36c6 | 4965 | gdb_praddsysset (exitset, SYS_exec); |
c3f6f71d JM |
4966 | #endif |
4967 | #ifdef SYS_execve | |
37de36c6 | 4968 | gdb_praddsysset (exitset, SYS_execve); |
c3f6f71d JM |
4969 | #endif |
4970 | #ifdef SYS_execv | |
37de36c6 | 4971 | gdb_praddsysset (exitset, SYS_execv); |
c906108c | 4972 | #endif |
37de36c6 KB |
4973 | #ifdef DYNAMIC_SYSCALLS |
4974 | { | |
4975 | int callnum = find_syscall (pi, "execve"); | |
4976 | ||
4977 | if (callnum >= 0) | |
4978 | gdb_praddsysset (exitset, callnum); | |
c906108c | 4979 | |
37de36c6 KB |
4980 | callnum = find_syscall (pi, "ra_execve"); |
4981 | if (callnum >= 0) | |
4982 | gdb_praddsysset (exitset, callnum); | |
4983 | } | |
4984 | #endif /* DYNAMIC_SYSCALLS */ | |
4985 | ||
4986 | if (!proc_set_traced_sysexit (pi, exitset)) | |
c906108c | 4987 | { |
c3f6f71d JM |
4988 | proc_warn (pi, "set_exec_trap, set_traced_sysexit", __LINE__); |
4989 | gdb_flush (gdb_stderr); | |
4990 | _exit (127); | |
c906108c | 4991 | } |
c3f6f71d JM |
4992 | #endif /* PRFS_STOPEXEC */ |
4993 | ||
4994 | /* FIXME: should this be done in the parent instead? */ | |
4995 | /* Turn off inherit on fork flag so that all grand-children | |
4996 | of gdb start with tracing flags cleared. */ | |
4997 | if (!proc_unset_inherit_on_fork (pi)) | |
4998 | proc_warn (pi, "set_exec_trap, unset_inherit", __LINE__); | |
4999 | ||
5000 | /* Turn off run on last close flag, so that the child process | |
5001 | cannot run away just because we close our handle on it. | |
5002 | We want it to wait for the parent to attach. */ | |
5003 | if (!proc_unset_run_on_last_close (pi)) | |
5004 | proc_warn (pi, "set_exec_trap, unset_RLC", __LINE__); | |
5005 | ||
19958708 | 5006 | /* FIXME: No need to destroy the procinfo -- |
c3f6f71d JM |
5007 | we have our own address space, and we're about to do an exec! */ |
5008 | /*destroy_procinfo (pi);*/ | |
c906108c | 5009 | } |
c906108c | 5010 | |
c3f6f71d JM |
5011 | /* |
5012 | * Function: create_inferior | |
5013 | * | |
5014 | * This function is called BEFORE gdb forks the inferior process. | |
19958708 | 5015 | * Its only real responsibility is to set things up for the fork, |
c3f6f71d JM |
5016 | * and tell GDB which two functions to call after the fork (one |
5017 | * for the parent, and one for the child). | |
19958708 | 5018 | * |
c3f6f71d JM |
5019 | * This function does a complicated search for a unix shell program, |
5020 | * which it then uses to parse arguments and environment variables | |
5021 | * to be sent to the child. I wonder whether this code could not | |
5022 | * be abstracted out and shared with other unix targets such as | |
5023 | * infptrace? | |
5024 | */ | |
c906108c SS |
5025 | |
5026 | static void | |
c27cda74 AC |
5027 | procfs_create_inferior (char *exec_file, char *allargs, char **env, |
5028 | int from_tty) | |
c906108c SS |
5029 | { |
5030 | char *shell_file = getenv ("SHELL"); | |
5031 | char *tryname; | |
5032 | if (shell_file != NULL && strchr (shell_file, '/') == NULL) | |
5033 | { | |
5034 | ||
5035 | /* We will be looking down the PATH to find shell_file. If we | |
c3f6f71d JM |
5036 | just do this the normal way (via execlp, which operates by |
5037 | attempting an exec for each element of the PATH until it | |
5038 | finds one which succeeds), then there will be an exec for | |
5039 | each failed attempt, each of which will cause a PR_SYSEXIT | |
5040 | stop, and we won't know how to distinguish the PR_SYSEXIT's | |
5041 | for these failed execs with the ones for successful execs | |
5042 | (whether the exec has succeeded is stored at that time in the | |
5043 | carry bit or some such architecture-specific and | |
5044 | non-ABI-specified place). | |
5045 | ||
5046 | So I can't think of anything better than to search the PATH | |
5047 | now. This has several disadvantages: (1) There is a race | |
5048 | condition; if we find a file now and it is deleted before we | |
5049 | exec it, we lose, even if the deletion leaves a valid file | |
5050 | further down in the PATH, (2) there is no way to know exactly | |
5051 | what an executable (in the sense of "capable of being | |
5052 | exec'd") file is. Using access() loses because it may lose | |
5053 | if the caller is the superuser; failing to use it loses if | |
5054 | there are ACLs or some such. */ | |
c906108c SS |
5055 | |
5056 | char *p; | |
5057 | char *p1; | |
5058 | /* FIXME-maybe: might want "set path" command so user can change what | |
c3f6f71d | 5059 | path is used from within GDB. */ |
c906108c SS |
5060 | char *path = getenv ("PATH"); |
5061 | int len; | |
5062 | struct stat statbuf; | |
5063 | ||
5064 | if (path == NULL) | |
5065 | path = "/bin:/usr/bin"; | |
5066 | ||
5067 | tryname = alloca (strlen (path) + strlen (shell_file) + 2); | |
c3f6f71d | 5068 | for (p = path; p != NULL; p = p1 ? p1 + 1: NULL) |
c906108c SS |
5069 | { |
5070 | p1 = strchr (p, ':'); | |
5071 | if (p1 != NULL) | |
5072 | len = p1 - p; | |
5073 | else | |
5074 | len = strlen (p); | |
5075 | strncpy (tryname, p, len); | |
5076 | tryname[len] = '\0'; | |
5077 | strcat (tryname, "/"); | |
5078 | strcat (tryname, shell_file); | |
5079 | if (access (tryname, X_OK) < 0) | |
5080 | continue; | |
5081 | if (stat (tryname, &statbuf) < 0) | |
5082 | continue; | |
5083 | if (!S_ISREG (statbuf.st_mode)) | |
5084 | /* We certainly need to reject directories. I'm not quite | |
5085 | as sure about FIFOs, sockets, etc., but I kind of doubt | |
5086 | that people want to exec() these things. */ | |
5087 | continue; | |
5088 | break; | |
5089 | } | |
5090 | if (p == NULL) | |
5091 | /* Not found. This must be an error rather than merely passing | |
5092 | the file to execlp(), because execlp() would try all the | |
5093 | exec()s, causing GDB to get confused. */ | |
8a3fe4f8 | 5094 | error (_("procfs:%d -- Can't find shell %s in PATH"), |
c3f6f71d | 5095 | __LINE__, shell_file); |
c906108c SS |
5096 | |
5097 | shell_file = tryname; | |
5098 | } | |
5099 | ||
19958708 | 5100 | fork_inferior (exec_file, allargs, env, procfs_set_exec_trap, |
c3f6f71d | 5101 | procfs_init_inferior, NULL, shell_file); |
c906108c | 5102 | |
9185ddce JB |
5103 | #ifdef SYS_syssgi |
5104 | /* Make sure to cancel the syssgi() syscall-exit notifications. | |
5105 | They should normally have been removed by now, but they may still | |
5106 | be activated if the inferior doesn't use shared libraries, or if | |
5107 | we didn't locate __dbx_link, or if we never stopped in __dbx_link. | |
5108 | See procfs_init_inferior() for more details. */ | |
5109 | proc_trace_syscalls_1 (find_procinfo_or_die (PIDGET (inferior_ptid), 0), | |
5110 | SYS_syssgi, PR_SYSEXIT, FLAG_RESET, 0); | |
5111 | #endif | |
c906108c SS |
5112 | } |
5113 | ||
c3f6f71d JM |
5114 | /* |
5115 | * Function: notice_thread | |
5116 | * | |
5117 | * Callback for find_new_threads. | |
5118 | * Calls "add_thread". | |
5119 | */ | |
c906108c | 5120 | |
c3f6f71d | 5121 | static int |
fba45db2 | 5122 | procfs_notice_thread (procinfo *pi, procinfo *thread, void *ptr) |
c906108c | 5123 | { |
39f77062 | 5124 | ptid_t gdb_threadid = MERGEPID (pi->pid, thread->tid); |
c906108c | 5125 | |
c3f6f71d JM |
5126 | if (!in_thread_list (gdb_threadid)) |
5127 | add_thread (gdb_threadid); | |
c906108c | 5128 | |
c3f6f71d JM |
5129 | return 0; |
5130 | } | |
5131 | ||
5132 | /* | |
5133 | * Function: target_find_new_threads | |
5134 | * | |
19958708 | 5135 | * Query all the threads that the target knows about, |
c3f6f71d JM |
5136 | * and give them back to GDB to add to its list. |
5137 | */ | |
5138 | ||
5139 | void | |
fba45db2 | 5140 | procfs_find_new_threads (void) |
c3f6f71d JM |
5141 | { |
5142 | procinfo *pi; | |
5143 | ||
5144 | /* Find procinfo for main process */ | |
39f77062 | 5145 | pi = find_procinfo_or_die (PIDGET (inferior_ptid), 0); |
c3f6f71d JM |
5146 | proc_update_threads (pi); |
5147 | proc_iterate_over_threads (pi, procfs_notice_thread, NULL); | |
c906108c SS |
5148 | } |
5149 | ||
19958708 | 5150 | /* |
c3f6f71d JM |
5151 | * Function: target_thread_alive |
5152 | * | |
5153 | * Return true if the thread is still 'alive'. | |
5154 | * | |
5155 | * This guy doesn't really seem to be doing his job. | |
5156 | * Got to investigate how to tell when a thread is really gone. | |
5157 | */ | |
c906108c | 5158 | |
c906108c | 5159 | static int |
39f77062 | 5160 | procfs_thread_alive (ptid_t ptid) |
c906108c | 5161 | { |
c3f6f71d JM |
5162 | int proc, thread; |
5163 | procinfo *pi; | |
c906108c | 5164 | |
39f77062 KB |
5165 | proc = PIDGET (ptid); |
5166 | thread = TIDGET (ptid); | |
c3f6f71d JM |
5167 | /* If I don't know it, it ain't alive! */ |
5168 | if ((pi = find_procinfo (proc, thread)) == NULL) | |
5169 | return 0; | |
5170 | ||
5171 | /* If I can't get its status, it ain't alive! | |
5172 | What's more, I need to forget about it! */ | |
5173 | if (!proc_get_status (pi)) | |
5174 | { | |
5175 | destroy_procinfo (pi); | |
5176 | return 0; | |
5177 | } | |
5178 | /* I couldn't have got its status if it weren't alive, so it's alive. */ | |
5179 | return 1; | |
c906108c | 5180 | } |
c3f6f71d | 5181 | |
5240ceac | 5182 | /* Convert PTID to a string. Returns the string in a static buffer. */ |
c3f6f71d JM |
5183 | |
5184 | char * | |
39f77062 | 5185 | procfs_pid_to_str (ptid_t ptid) |
c3f6f71d JM |
5186 | { |
5187 | static char buf[80]; | |
c3f6f71d | 5188 | |
5240ceac MK |
5189 | if (TIDGET (ptid) == 0) |
5190 | sprintf (buf, "process %d", PIDGET (ptid)); | |
c3f6f71d | 5191 | else |
21749010 | 5192 | sprintf (buf, "LWP %ld", TIDGET (ptid)); |
5240ceac MK |
5193 | |
5194 | return buf; | |
c3f6f71d JM |
5195 | } |
5196 | ||
5197 | /* | |
5198 | * Function: procfs_set_watchpoint | |
5199 | * Insert a watchpoint | |
5200 | */ | |
5201 | ||
19958708 | 5202 | int |
39f77062 KB |
5203 | procfs_set_watchpoint (ptid_t ptid, CORE_ADDR addr, int len, int rwflag, |
5204 | int after) | |
c906108c | 5205 | { |
c3f6f71d | 5206 | #ifndef UNIXWARE |
37de36c6 | 5207 | #ifndef AIX5 |
c3f6f71d | 5208 | int pflags = 0; |
19958708 | 5209 | procinfo *pi; |
c3f6f71d | 5210 | |
19958708 | 5211 | pi = find_procinfo_or_die (PIDGET (ptid) == -1 ? |
39f77062 | 5212 | PIDGET (inferior_ptid) : PIDGET (ptid), 0); |
c3f6f71d JM |
5213 | |
5214 | /* Translate from GDB's flags to /proc's */ | |
5215 | if (len > 0) /* len == 0 means delete watchpoint */ | |
c906108c | 5216 | { |
c3f6f71d JM |
5217 | switch (rwflag) { /* FIXME: need an enum! */ |
5218 | case hw_write: /* default watchpoint (write) */ | |
5219 | pflags = WRITE_WATCHFLAG; | |
5220 | break; | |
5221 | case hw_read: /* read watchpoint */ | |
5222 | pflags = READ_WATCHFLAG; | |
5223 | break; | |
5224 | case hw_access: /* access watchpoint */ | |
5225 | pflags = READ_WATCHFLAG | WRITE_WATCHFLAG; | |
5226 | break; | |
5227 | case hw_execute: /* execution HW breakpoint */ | |
5228 | pflags = EXEC_WATCHFLAG; | |
5229 | break; | |
5230 | default: /* Something weird. Return error. */ | |
c906108c | 5231 | return -1; |
c3f6f71d JM |
5232 | } |
5233 | if (after) /* Stop after r/w access is completed. */ | |
5234 | pflags |= AFTER_WATCHFLAG; | |
5235 | } | |
5236 | ||
5237 | if (!proc_set_watchpoint (pi, addr, len, pflags)) | |
5238 | { | |
5239 | if (errno == E2BIG) /* Typical error for no resources */ | |
5240 | return -1; /* fail */ | |
5241 | /* GDB may try to remove the same watchpoint twice. | |
5242 | If a remove request returns no match, don't error. */ | |
c906108c | 5243 | if (errno == ESRCH && len == 0) |
c3f6f71d JM |
5244 | return 0; /* ignore */ |
5245 | proc_error (pi, "set_watchpoint", __LINE__); | |
c906108c | 5246 | } |
37de36c6 KB |
5247 | #endif /* AIX5 */ |
5248 | #endif /* UNIXWARE */ | |
c906108c SS |
5249 | return 0; |
5250 | } | |
5251 | ||
1e03ad20 KB |
5252 | /* Return non-zero if we can set a hardware watchpoint of type TYPE. TYPE |
5253 | is one of bp_hardware_watchpoint, bp_read_watchpoint, bp_write_watchpoint, | |
5254 | or bp_hardware_watchpoint. CNT is the number of watchpoints used so | |
5255 | far. | |
19958708 | 5256 | |
1e03ad20 KB |
5257 | Note: procfs_can_use_hw_breakpoint() is not yet used by all |
5258 | procfs.c targets due to the fact that some of them still define | |
5259 | TARGET_CAN_USE_HARDWARE_WATCHPOINT. */ | |
5260 | ||
5261 | static int | |
5262 | procfs_can_use_hw_breakpoint (int type, int cnt, int othertype) | |
5263 | { | |
5264 | #ifndef TARGET_HAS_HARDWARE_WATCHPOINTS | |
5265 | return 0; | |
5266 | #else | |
5267 | /* Due to the way that proc_set_watchpoint() is implemented, host | |
5268 | and target pointers must be of the same size. If they are not, | |
5269 | we can't use hardware watchpoints. This limitation is due to the | |
9a043c1d AC |
5270 | fact that proc_set_watchpoint() calls |
5271 | procfs_address_to_host_pointer(); a close inspection of | |
5272 | procfs_address_to_host_pointer will reveal that an internal error | |
5273 | will be generated when the host and target pointer sizes are | |
5274 | different. */ | |
1e03ad20 KB |
5275 | if (sizeof (void *) != TYPE_LENGTH (builtin_type_void_data_ptr)) |
5276 | return 0; | |
5277 | ||
5278 | /* Other tests here??? */ | |
5279 | ||
5280 | return 1; | |
5281 | #endif | |
5282 | } | |
5283 | ||
c3f6f71d JM |
5284 | /* |
5285 | * Function: stopped_by_watchpoint | |
5286 | * | |
5287 | * Returns non-zero if process is stopped on a hardware watchpoint fault, | |
5288 | * else returns zero. | |
5289 | */ | |
5290 | ||
c906108c | 5291 | int |
39f77062 | 5292 | procfs_stopped_by_watchpoint (ptid_t ptid) |
c906108c | 5293 | { |
c3f6f71d | 5294 | procinfo *pi; |
c906108c | 5295 | |
19958708 | 5296 | pi = find_procinfo_or_die (PIDGET (ptid) == -1 ? |
39f77062 | 5297 | PIDGET (inferior_ptid) : PIDGET (ptid), 0); |
aaeb7efa MS |
5298 | |
5299 | if (!pi) /* If no process, then not stopped by watchpoint! */ | |
5300 | return 0; | |
5301 | ||
c3f6f71d | 5302 | if (proc_flags (pi) & (PR_STOPPED | PR_ISTOP)) |
c906108c | 5303 | { |
c3f6f71d | 5304 | if (proc_why (pi) == PR_FAULTED) |
19958708 | 5305 | { |
c906108c | 5306 | #ifdef FLTWATCH |
c3f6f71d JM |
5307 | if (proc_what (pi) == FLTWATCH) |
5308 | return 1; | |
c906108c SS |
5309 | #endif |
5310 | #ifdef FLTKWATCH | |
c3f6f71d JM |
5311 | if (proc_what (pi) == FLTKWATCH) |
5312 | return 1; | |
c906108c | 5313 | #endif |
c3f6f71d | 5314 | } |
c906108c SS |
5315 | } |
5316 | return 0; | |
5317 | } | |
c906108c | 5318 | |
c3f6f71d JM |
5319 | #ifdef TM_I386SOL2_H |
5320 | /* | |
19958708 | 5321 | * Function: procfs_find_LDT_entry |
c3f6f71d JM |
5322 | * |
5323 | * Input: | |
39f77062 | 5324 | * ptid_t ptid; // The GDB-style pid-plus-LWP. |
c3f6f71d JM |
5325 | * |
5326 | * Return: | |
5327 | * pointer to the corresponding LDT entry. | |
5328 | */ | |
c906108c | 5329 | |
c3f6f71d | 5330 | struct ssd * |
39f77062 | 5331 | procfs_find_LDT_entry (ptid_t ptid) |
c906108c | 5332 | { |
c3f6f71d JM |
5333 | gdb_gregset_t *gregs; |
5334 | int key; | |
5335 | procinfo *pi; | |
c906108c | 5336 | |
c3f6f71d | 5337 | /* Find procinfo for the lwp. */ |
39f77062 | 5338 | if ((pi = find_procinfo (PIDGET (ptid), TIDGET (ptid))) == NULL) |
c906108c | 5339 | { |
8a3fe4f8 | 5340 | warning (_("procfs_find_LDT_entry: could not find procinfo for %d:%d."), |
39f77062 | 5341 | PIDGET (ptid), TIDGET (ptid)); |
c3f6f71d | 5342 | return NULL; |
c906108c | 5343 | } |
c3f6f71d JM |
5344 | /* get its general registers. */ |
5345 | if ((gregs = proc_get_gregs (pi)) == NULL) | |
5346 | { | |
8a3fe4f8 | 5347 | warning (_("procfs_find_LDT_entry: could not read gregs for %d:%d."), |
39f77062 | 5348 | PIDGET (ptid), TIDGET (ptid)); |
c3f6f71d JM |
5349 | return NULL; |
5350 | } | |
5351 | /* Now extract the GS register's lower 16 bits. */ | |
5352 | key = (*gregs)[GS] & 0xffff; | |
5353 | ||
5354 | /* Find the matching entry and return it. */ | |
5355 | return proc_get_LDT_entry (pi, key); | |
c906108c | 5356 | } |
c3f6f71d | 5357 | #endif /* TM_I386SOL2_H */ |
c906108c | 5358 | |
831e682e MS |
5359 | /* |
5360 | * Memory Mappings Functions: | |
5361 | */ | |
5362 | ||
19958708 | 5363 | /* |
831e682e MS |
5364 | * Function: iterate_over_mappings |
5365 | * | |
5366 | * Call a callback function once for each mapping, passing it the mapping, | |
5367 | * an optional secondary callback function, and some optional opaque data. | |
5368 | * Quit and return the first non-zero value returned from the callback. | |
5369 | * | |
5370 | * Arguments: | |
5371 | * pi -- procinfo struct for the process to be mapped. | |
5372 | * func -- callback function to be called by this iterator. | |
5373 | * data -- optional opaque data to be passed to the callback function. | |
5374 | * child_func -- optional secondary function pointer to be passed | |
5375 | * to the child function. | |
5376 | * | |
19958708 | 5377 | * Return: First non-zero return value from the callback function, |
831e682e MS |
5378 | * or zero. |
5379 | */ | |
5380 | ||
5381 | static int | |
19958708 RM |
5382 | iterate_over_mappings (procinfo *pi, int (*child_func) (), void *data, |
5383 | int (*func) (struct prmap *map, | |
5384 | int (*child_func) (), | |
831e682e MS |
5385 | void *data)) |
5386 | { | |
5387 | char pathname[MAX_PROC_NAME_SIZE]; | |
5388 | struct prmap *prmaps; | |
5389 | struct prmap *prmap; | |
5390 | int funcstat; | |
5391 | int map_fd; | |
5392 | int nmap; | |
5393 | #ifdef NEW_PROC_API | |
5394 | struct stat sbuf; | |
5395 | #endif | |
5396 | ||
19958708 | 5397 | /* Get the number of mappings, allocate space, |
831e682e MS |
5398 | and read the mappings into prmaps. */ |
5399 | #ifdef NEW_PROC_API | |
5400 | /* Open map fd. */ | |
5401 | sprintf (pathname, "/proc/%d/map", pi->pid); | |
5402 | if ((map_fd = open (pathname, O_RDONLY)) < 0) | |
5403 | proc_error (pi, "iterate_over_mappings (open)", __LINE__); | |
5404 | ||
5405 | /* Make sure it gets closed again. */ | |
5406 | make_cleanup_close (map_fd); | |
5407 | ||
19958708 | 5408 | /* Use stat to determine the file size, and compute |
831e682e MS |
5409 | the number of prmap_t objects it contains. */ |
5410 | if (fstat (map_fd, &sbuf) != 0) | |
5411 | proc_error (pi, "iterate_over_mappings (fstat)", __LINE__); | |
5412 | ||
5413 | nmap = sbuf.st_size / sizeof (prmap_t); | |
5414 | prmaps = (struct prmap *) alloca ((nmap + 1) * sizeof (*prmaps)); | |
5415 | if (read (map_fd, (char *) prmaps, nmap * sizeof (*prmaps)) | |
5416 | != (nmap * sizeof (*prmaps))) | |
5417 | proc_error (pi, "iterate_over_mappings (read)", __LINE__); | |
5418 | #else | |
5419 | /* Use ioctl command PIOCNMAP to get number of mappings. */ | |
5420 | if (ioctl (pi->ctl_fd, PIOCNMAP, &nmap) != 0) | |
5421 | proc_error (pi, "iterate_over_mappings (PIOCNMAP)", __LINE__); | |
5422 | ||
5423 | prmaps = (struct prmap *) alloca ((nmap + 1) * sizeof (*prmaps)); | |
5424 | if (ioctl (pi->ctl_fd, PIOCMAP, prmaps) != 0) | |
5425 | proc_error (pi, "iterate_over_mappings (PIOCMAP)", __LINE__); | |
5426 | #endif | |
5427 | ||
5428 | for (prmap = prmaps; nmap > 0; prmap++, nmap--) | |
5429 | if ((funcstat = (*func) (prmap, child_func, data)) != 0) | |
5430 | return funcstat; | |
5431 | ||
5432 | return 0; | |
5433 | } | |
5434 | ||
5435 | /* | |
5436 | * Function: solib_mappings_callback | |
5437 | * | |
19958708 RM |
5438 | * Calls the supplied callback function once for each mapped address |
5439 | * space in the process. The callback function receives an open | |
5440 | * file descriptor for the file corresponding to that mapped | |
5441 | * address space (if there is one), and the base address of the | |
831e682e MS |
5442 | * mapped space. Quit when the callback function returns a |
5443 | * nonzero value, or at teh end of the mappings. | |
5444 | * | |
5445 | * Returns: the first non-zero return value of the callback function, | |
5446 | * or zero. | |
5447 | */ | |
5448 | ||
19958708 | 5449 | int solib_mappings_callback (struct prmap *map, |
831e682e MS |
5450 | int (*func) (int, CORE_ADDR), |
5451 | void *data) | |
5452 | { | |
5453 | procinfo *pi = data; | |
5454 | int fd; | |
5455 | ||
5456 | #ifdef NEW_PROC_API | |
5457 | char name[MAX_PROC_NAME_SIZE + sizeof (map->pr_mapname)]; | |
5458 | ||
5459 | if (map->pr_vaddr == 0 && map->pr_size == 0) | |
5460 | return -1; /* sanity */ | |
5461 | ||
5462 | if (map->pr_mapname[0] == 0) | |
5463 | { | |
5464 | fd = -1; /* no map file */ | |
5465 | } | |
5466 | else | |
5467 | { | |
5468 | sprintf (name, "/proc/%d/object/%s", pi->pid, map->pr_mapname); | |
5469 | /* Note: caller's responsibility to close this fd! */ | |
5470 | fd = open_with_retry (name, O_RDONLY); | |
5471 | /* Note: we don't test the above call for failure; | |
19958708 | 5472 | we just pass the FD on as given. Sometimes there is |
831e682e MS |
5473 | no file, so the open may return failure, but that's |
5474 | not a problem. */ | |
5475 | } | |
5476 | #else | |
5477 | fd = ioctl (pi->ctl_fd, PIOCOPENM, &map->pr_vaddr); | |
5478 | /* Note: we don't test the above call for failure; | |
19958708 | 5479 | we just pass the FD on as given. Sometimes there is |
831e682e MS |
5480 | no file, so the ioctl may return failure, but that's |
5481 | not a problem. */ | |
5482 | #endif | |
5483 | return (*func) (fd, (CORE_ADDR) map->pr_vaddr); | |
5484 | } | |
5485 | ||
5486 | /* | |
5487 | * Function: proc_iterate_over_mappings | |
5488 | * | |
5489 | * Uses the unified "iterate_over_mappings" function | |
5490 | * to implement the exported interface to solib-svr4.c. | |
5491 | * | |
5492 | * Given a pointer to a function, call that function once for every | |
19958708 | 5493 | * mapped address space in the process. The callback function |
831e682e MS |
5494 | * receives an open file descriptor for the file corresponding to |
5495 | * that mapped address space (if there is one), and the base address | |
5496 | * of the mapped space. Quit when the callback function returns a | |
5497 | * nonzero value, or at teh end of the mappings. | |
5498 | * | |
5499 | * Returns: the first non-zero return value of the callback function, | |
5500 | * or zero. | |
5501 | */ | |
5502 | ||
5503 | int | |
5504 | proc_iterate_over_mappings (int (*func) (int, CORE_ADDR)) | |
5505 | { | |
5506 | procinfo *pi = find_procinfo_or_die (PIDGET (inferior_ptid), 0); | |
5507 | ||
5508 | return iterate_over_mappings (pi, func, pi, solib_mappings_callback); | |
5509 | } | |
5510 | ||
be4d1333 MS |
5511 | /* |
5512 | * Function: find_memory_regions_callback | |
5513 | * | |
5514 | * Implements the to_find_memory_regions method. | |
5515 | * Calls an external function for each memory region. | |
5516 | * External function will have the signiture: | |
5517 | * | |
19958708 RM |
5518 | * int callback (CORE_ADDR vaddr, |
5519 | * unsigned long size, | |
5520 | * int read, int write, int execute, | |
be4d1333 MS |
5521 | * void *data); |
5522 | * | |
5523 | * Returns the integer value returned by the callback. | |
5524 | */ | |
5525 | ||
5526 | static int | |
19958708 RM |
5527 | find_memory_regions_callback (struct prmap *map, |
5528 | int (*func) (CORE_ADDR, | |
5529 | unsigned long, | |
5530 | int, int, int, | |
be4d1333 MS |
5531 | void *), |
5532 | void *data) | |
5533 | { | |
6dbdc4a3 | 5534 | return (*func) ((CORE_ADDR) map->pr_vaddr, |
19958708 | 5535 | map->pr_size, |
be4d1333 MS |
5536 | (map->pr_mflags & MA_READ) != 0, |
5537 | (map->pr_mflags & MA_WRITE) != 0, | |
19958708 | 5538 | (map->pr_mflags & MA_EXEC) != 0, |
be4d1333 MS |
5539 | data); |
5540 | } | |
5541 | ||
5542 | /* | |
5543 | * Function: proc_find_memory_regions | |
5544 | * | |
5545 | * External interface. Calls a callback function once for each | |
5546 | * mapped memory region in the child process, passing as arguments | |
5547 | * CORE_ADDR virtual_address, | |
19958708 | 5548 | * unsigned long size, |
be4d1333 MS |
5549 | * int read, TRUE if region is readable by the child |
5550 | * int write, TRUE if region is writable by the child | |
5551 | * int execute TRUE if region is executable by the child. | |
19958708 | 5552 | * |
be4d1333 MS |
5553 | * Stops iterating and returns the first non-zero value |
5554 | * returned by the callback. | |
5555 | */ | |
5556 | ||
5557 | static int | |
19958708 RM |
5558 | proc_find_memory_regions (int (*func) (CORE_ADDR, |
5559 | unsigned long, | |
5560 | int, int, int, | |
5561 | void *), | |
be4d1333 MS |
5562 | void *data) |
5563 | { | |
5564 | procinfo *pi = find_procinfo_or_die (PIDGET (inferior_ptid), 0); | |
5565 | ||
19958708 | 5566 | return iterate_over_mappings (pi, func, data, |
be4d1333 MS |
5567 | find_memory_regions_callback); |
5568 | } | |
5569 | ||
9185ddce JB |
5570 | /* Remove the breakpoint that we inserted in __dbx_link(). |
5571 | Does nothing if the breakpoint hasn't been inserted or has already | |
5572 | been removed. */ | |
5573 | ||
5574 | static void | |
5575 | remove_dbx_link_breakpoint (void) | |
5576 | { | |
5577 | if (dbx_link_bpt_addr == 0) | |
5578 | return; | |
5579 | ||
8181d85f | 5580 | if (deprecated_remove_raw_breakpoint (dbx_link_bpt) != 0) |
8a3fe4f8 | 5581 | warning (_("Unable to remove __dbx_link breakpoint.")); |
9185ddce JB |
5582 | |
5583 | dbx_link_bpt_addr = 0; | |
8181d85f | 5584 | dbx_link_bpt = NULL; |
9185ddce JB |
5585 | } |
5586 | ||
5587 | /* Return the address of the __dbx_link() function in the file | |
5588 | refernced by ABFD by scanning its symbol table. Return 0 if | |
5589 | the symbol was not found. */ | |
5590 | ||
5591 | static CORE_ADDR | |
5592 | dbx_link_addr (bfd *abfd) | |
5593 | { | |
5594 | long storage_needed; | |
5595 | asymbol **symbol_table; | |
5596 | long number_of_symbols; | |
5597 | long i; | |
5598 | ||
5599 | storage_needed = bfd_get_symtab_upper_bound (abfd); | |
5600 | if (storage_needed <= 0) | |
5601 | return 0; | |
5602 | ||
5603 | symbol_table = (asymbol **) xmalloc (storage_needed); | |
5604 | make_cleanup (xfree, symbol_table); | |
5605 | ||
5606 | number_of_symbols = bfd_canonicalize_symtab (abfd, symbol_table); | |
5607 | ||
5608 | for (i = 0; i < number_of_symbols; i++) | |
5609 | { | |
5610 | asymbol *sym = symbol_table[i]; | |
5611 | ||
5612 | if ((sym->flags & BSF_GLOBAL) | |
5613 | && sym->name != NULL && strcmp (sym->name, "__dbx_link") == 0) | |
5614 | return (sym->value + sym->section->vma); | |
5615 | } | |
5616 | ||
5617 | /* Symbol not found, return NULL. */ | |
5618 | return 0; | |
5619 | } | |
5620 | ||
5621 | /* Search the symbol table of the file referenced by FD for a symbol | |
5622 | named __dbx_link(). If found, then insert a breakpoint at this location, | |
5623 | and return nonzero. Return zero otherwise. */ | |
5624 | ||
5625 | static int | |
5626 | insert_dbx_link_bpt_in_file (int fd, CORE_ADDR ignored) | |
5627 | { | |
5628 | bfd *abfd; | |
5629 | long storage_needed; | |
5630 | CORE_ADDR sym_addr; | |
5631 | ||
5632 | abfd = bfd_fdopenr ("unamed", 0, fd); | |
5633 | if (abfd == NULL) | |
5634 | { | |
8a3fe4f8 | 5635 | warning (_("Failed to create a bfd: %s."), bfd_errmsg (bfd_get_error ())); |
9185ddce JB |
5636 | return 0; |
5637 | } | |
5638 | ||
5639 | if (!bfd_check_format (abfd, bfd_object)) | |
5640 | { | |
5641 | /* Not the correct format, so we can not possibly find the dbx_link | |
5642 | symbol in it. */ | |
5643 | bfd_close (abfd); | |
5644 | return 0; | |
5645 | } | |
5646 | ||
5647 | sym_addr = dbx_link_addr (abfd); | |
5648 | if (sym_addr != 0) | |
5649 | { | |
5650 | /* Insert the breakpoint. */ | |
5651 | dbx_link_bpt_addr = sym_addr; | |
8181d85f DJ |
5652 | dbx_link_bpt = deprecated_insert_raw_breakpoint (sym_addr); |
5653 | if (dbx_link_bpt == NULL) | |
9185ddce | 5654 | { |
8a3fe4f8 | 5655 | warning (_("Failed to insert dbx_link breakpoint.")); |
9185ddce JB |
5656 | bfd_close (abfd); |
5657 | return 0; | |
5658 | } | |
5659 | bfd_close (abfd); | |
5660 | return 1; | |
5661 | } | |
5662 | ||
5663 | bfd_close (abfd); | |
5664 | return 0; | |
5665 | } | |
5666 | ||
5667 | /* If the given memory region MAP contains a symbol named __dbx_link, | |
5668 | insert a breakpoint at this location and return nonzero. Return | |
5669 | zero otherwise. */ | |
5670 | ||
5671 | static int | |
5672 | insert_dbx_link_bpt_in_region (struct prmap *map, | |
5673 | int (*child_func) (), | |
5674 | void *data) | |
5675 | { | |
5676 | procinfo *pi = (procinfo *) data; | |
5677 | ||
5678 | /* We know the symbol we're looking for is in a text region, so | |
5679 | only look for it if the region is a text one. */ | |
5680 | if (map->pr_mflags & MA_EXEC) | |
5681 | return solib_mappings_callback (map, insert_dbx_link_bpt_in_file, pi); | |
5682 | ||
5683 | return 0; | |
5684 | } | |
5685 | ||
5686 | /* Search all memory regions for a symbol named __dbx_link. If found, | |
5687 | insert a breakpoint at its location, and return nonzero. Return zero | |
5688 | otherwise. */ | |
5689 | ||
5690 | static int | |
5691 | insert_dbx_link_breakpoint (procinfo *pi) | |
5692 | { | |
5693 | return iterate_over_mappings (pi, NULL, pi, insert_dbx_link_bpt_in_region); | |
5694 | } | |
5695 | ||
388faa48 MS |
5696 | /* |
5697 | * Function: mappingflags | |
5698 | * | |
5699 | * Returns an ascii representation of a memory mapping's flags. | |
5700 | */ | |
c3f6f71d | 5701 | |
388faa48 | 5702 | static char * |
5ae5f592 | 5703 | mappingflags (long flags) |
388faa48 MS |
5704 | { |
5705 | static char asciiflags[8]; | |
5706 | ||
5707 | strcpy (asciiflags, "-------"); | |
5708 | #if defined (MA_PHYS) | |
5709 | if (flags & MA_PHYS) | |
5710 | asciiflags[0] = 'd'; | |
5711 | #endif | |
5712 | if (flags & MA_STACK) | |
5713 | asciiflags[1] = 's'; | |
5714 | if (flags & MA_BREAK) | |
5715 | asciiflags[2] = 'b'; | |
5716 | if (flags & MA_SHARED) | |
5717 | asciiflags[3] = 's'; | |
5718 | if (flags & MA_READ) | |
5719 | asciiflags[4] = 'r'; | |
5720 | if (flags & MA_WRITE) | |
5721 | asciiflags[5] = 'w'; | |
5722 | if (flags & MA_EXEC) | |
5723 | asciiflags[6] = 'x'; | |
5724 | return (asciiflags); | |
5725 | } | |
5726 | ||
831e682e MS |
5727 | /* |
5728 | * Function: info_mappings_callback | |
5729 | * | |
5730 | * Callback function, does the actual work for 'info proc mappings'. | |
5731 | */ | |
5732 | ||
831e682e MS |
5733 | static int |
5734 | info_mappings_callback (struct prmap *map, int (*ignore) (), void *unused) | |
5735 | { | |
5736 | char *data_fmt_string; | |
5737 | ||
5738 | if (TARGET_ADDR_BIT == 32) | |
5739 | data_fmt_string = "\t%#10lx %#10lx %#10x %#10x %7s\n"; | |
5740 | else | |
5741 | data_fmt_string = " %#18lx %#18lx %#10x %#10x %7s\n"; | |
5742 | ||
19958708 | 5743 | printf_filtered (data_fmt_string, |
831e682e MS |
5744 | (unsigned long) map->pr_vaddr, |
5745 | (unsigned long) map->pr_vaddr + map->pr_size - 1, | |
5746 | map->pr_size, | |
5747 | #ifdef PCAGENT /* Horrible hack: only defined on Solaris 2.6+ */ | |
19958708 | 5748 | (unsigned int) map->pr_offset, |
831e682e MS |
5749 | #else |
5750 | map->pr_off, | |
5751 | #endif | |
5752 | mappingflags (map->pr_mflags)); | |
5753 | ||
5754 | return 0; | |
5755 | } | |
5756 | ||
388faa48 MS |
5757 | /* |
5758 | * Function: info_proc_mappings | |
5759 | * | |
5760 | * Implement the "info proc mappings" subcommand. | |
5761 | */ | |
5762 | ||
5763 | static void | |
5764 | info_proc_mappings (procinfo *pi, int summary) | |
5765 | { | |
831e682e | 5766 | char *header_fmt_string; |
388faa48 MS |
5767 | |
5768 | if (TARGET_PTR_BIT == 32) | |
831e682e | 5769 | header_fmt_string = "\t%10s %10s %10s %10s %7s\n"; |
388faa48 | 5770 | else |
831e682e | 5771 | header_fmt_string = " %18s %18s %10s %10s %7s\n"; |
388faa48 MS |
5772 | |
5773 | if (summary) | |
5774 | return; /* No output for summary mode. */ | |
5775 | ||
a3f17187 | 5776 | printf_filtered (_("Mapped address spaces:\n\n")); |
19958708 | 5777 | printf_filtered (header_fmt_string, |
388faa48 MS |
5778 | "Start Addr", |
5779 | " End Addr", | |
5780 | " Size", | |
5781 | " Offset", | |
5782 | "Flags"); | |
5783 | ||
831e682e | 5784 | iterate_over_mappings (pi, NULL, NULL, info_mappings_callback); |
388faa48 MS |
5785 | printf_filtered ("\n"); |
5786 | } | |
5787 | ||
5788 | /* | |
5789 | * Function: info_proc_cmd | |
5790 | * | |
5791 | * Implement the "info proc" command. | |
5792 | */ | |
c3f6f71d JM |
5793 | |
5794 | static void | |
fba45db2 | 5795 | info_proc_cmd (char *args, int from_tty) |
c906108c | 5796 | { |
c3f6f71d | 5797 | struct cleanup *old_chain; |
388faa48 MS |
5798 | procinfo *process = NULL; |
5799 | procinfo *thread = NULL; | |
5800 | char **argv = NULL; | |
5801 | char *tmp = NULL; | |
5802 | int pid = 0; | |
5803 | int tid = 0; | |
5804 | int mappings = 0; | |
c906108c | 5805 | |
c3f6f71d JM |
5806 | old_chain = make_cleanup (null_cleanup, 0); |
5807 | if (args) | |
0fda6bd2 JM |
5808 | { |
5809 | if ((argv = buildargv (args)) == NULL) | |
5810 | nomem (0); | |
5811 | else | |
004527cb | 5812 | make_cleanup_freeargv (argv); |
0fda6bd2 | 5813 | } |
c3f6f71d JM |
5814 | while (argv != NULL && *argv != NULL) |
5815 | { | |
5816 | if (isdigit (argv[0][0])) | |
5817 | { | |
5818 | pid = strtoul (argv[0], &tmp, 10); | |
5819 | if (*tmp == '/') | |
5820 | tid = strtoul (++tmp, NULL, 10); | |
5821 | } | |
5822 | else if (argv[0][0] == '/') | |
5823 | { | |
5824 | tid = strtoul (argv[0] + 1, NULL, 10); | |
5825 | } | |
388faa48 MS |
5826 | else if (strncmp (argv[0], "mappings", strlen (argv[0])) == 0) |
5827 | { | |
5828 | mappings = 1; | |
5829 | } | |
c3f6f71d JM |
5830 | else |
5831 | { | |
5832 | /* [...] */ | |
5833 | } | |
5834 | argv++; | |
5835 | } | |
5836 | if (pid == 0) | |
39f77062 | 5837 | pid = PIDGET (inferior_ptid); |
c3f6f71d | 5838 | if (pid == 0) |
8a3fe4f8 | 5839 | error (_("No current process: you must name one.")); |
c3f6f71d | 5840 | else |
c906108c | 5841 | { |
c3f6f71d JM |
5842 | /* Have pid, will travel. |
5843 | First see if it's a process we're already debugging. */ | |
5844 | process = find_procinfo (pid, 0); | |
5845 | if (process == NULL) | |
5846 | { | |
19958708 | 5847 | /* No. So open a procinfo for it, but |
c3f6f71d JM |
5848 | remember to close it again when finished. */ |
5849 | process = create_procinfo (pid, 0); | |
004527cb | 5850 | make_cleanup (do_destroy_procinfo_cleanup, process); |
c3f6f71d JM |
5851 | if (!open_procinfo_files (process, FD_CTL)) |
5852 | proc_error (process, "info proc, open_procinfo_files", __LINE__); | |
5853 | } | |
c906108c | 5854 | } |
c3f6f71d JM |
5855 | if (tid != 0) |
5856 | thread = create_procinfo (pid, tid); | |
5857 | ||
5858 | if (process) | |
5859 | { | |
a3f17187 | 5860 | printf_filtered (_("process %d flags:\n"), process->pid); |
c3f6f71d JM |
5861 | proc_prettyprint_flags (proc_flags (process), 1); |
5862 | if (proc_flags (process) & (PR_STOPPED | PR_ISTOP)) | |
5863 | proc_prettyprint_why (proc_why (process), proc_what (process), 1); | |
5864 | if (proc_get_nthreads (process) > 1) | |
19958708 | 5865 | printf_filtered ("Process has %d threads.\n", |
c3f6f71d JM |
5866 | proc_get_nthreads (process)); |
5867 | } | |
5868 | if (thread) | |
5869 | { | |
a3f17187 | 5870 | printf_filtered (_("thread %d flags:\n"), thread->tid); |
c3f6f71d JM |
5871 | proc_prettyprint_flags (proc_flags (thread), 1); |
5872 | if (proc_flags (thread) & (PR_STOPPED | PR_ISTOP)) | |
5873 | proc_prettyprint_why (proc_why (thread), proc_what (thread), 1); | |
5874 | } | |
5875 | ||
388faa48 MS |
5876 | if (mappings) |
5877 | { | |
5878 | info_proc_mappings (process, 0); | |
5879 | } | |
5880 | ||
c3f6f71d | 5881 | do_cleanups (old_chain); |
c906108c SS |
5882 | } |
5883 | ||
9185ddce JB |
5884 | /* Modify the status of the system call identified by SYSCALLNUM in |
5885 | the set of syscalls that are currently traced/debugged. | |
5886 | ||
5887 | If ENTRY_OR_EXIT is set to PR_SYSENTRY, then the entry syscalls set | |
5888 | will be updated. Otherwise, the exit syscalls set will be updated. | |
5889 | ||
5890 | If MODE is FLAG_SET, then traces will be enabled. Otherwise, they | |
5891 | will be disabled. */ | |
5892 | ||
5893 | static void | |
5894 | proc_trace_syscalls_1 (procinfo *pi, int syscallnum, int entry_or_exit, | |
5895 | int mode, int from_tty) | |
5896 | { | |
5897 | sysset_t *sysset; | |
5898 | ||
5899 | if (entry_or_exit == PR_SYSENTRY) | |
5900 | sysset = proc_get_traced_sysentry (pi, NULL); | |
5901 | else | |
5902 | sysset = proc_get_traced_sysexit (pi, NULL); | |
5903 | ||
5904 | if (sysset == NULL) | |
5905 | proc_error (pi, "proc-trace, get_traced_sysset", __LINE__); | |
5906 | ||
5907 | if (mode == FLAG_SET) | |
5908 | gdb_praddsysset (sysset, syscallnum); | |
5909 | else | |
5910 | gdb_prdelsysset (sysset, syscallnum); | |
5911 | ||
5912 | if (entry_or_exit == PR_SYSENTRY) | |
5913 | { | |
5914 | if (!proc_set_traced_sysentry (pi, sysset)) | |
5915 | proc_error (pi, "proc-trace, set_traced_sysentry", __LINE__); | |
5916 | } | |
5917 | else | |
5918 | { | |
5919 | if (!proc_set_traced_sysexit (pi, sysset)) | |
5920 | proc_error (pi, "proc-trace, set_traced_sysexit", __LINE__); | |
5921 | } | |
5922 | } | |
5923 | ||
c3f6f71d | 5924 | static void |
fba45db2 | 5925 | proc_trace_syscalls (char *args, int from_tty, int entry_or_exit, int mode) |
c906108c | 5926 | { |
c3f6f71d | 5927 | procinfo *pi; |
c906108c | 5928 | |
39f77062 | 5929 | if (PIDGET (inferior_ptid) <= 0) |
8a3fe4f8 | 5930 | error (_("you must be debugging a process to use this command.")); |
c906108c | 5931 | |
c3f6f71d | 5932 | if (args == NULL || args[0] == 0) |
e2e0b3e5 | 5933 | error_no_arg (_("system call to trace")); |
c3f6f71d | 5934 | |
39f77062 | 5935 | pi = find_procinfo_or_die (PIDGET (inferior_ptid), 0); |
c3f6f71d JM |
5936 | if (isdigit (args[0])) |
5937 | { | |
9185ddce | 5938 | const int syscallnum = atoi (args); |
c906108c | 5939 | |
9185ddce | 5940 | proc_trace_syscalls_1 (pi, syscallnum, entry_or_exit, mode, from_tty); |
c3f6f71d JM |
5941 | } |
5942 | } | |
5943 | ||
19958708 | 5944 | static void |
fba45db2 | 5945 | proc_trace_sysentry_cmd (char *args, int from_tty) |
c906108c | 5946 | { |
c3f6f71d JM |
5947 | proc_trace_syscalls (args, from_tty, PR_SYSENTRY, FLAG_SET); |
5948 | } | |
c906108c | 5949 | |
19958708 | 5950 | static void |
fba45db2 | 5951 | proc_trace_sysexit_cmd (char *args, int from_tty) |
c3f6f71d JM |
5952 | { |
5953 | proc_trace_syscalls (args, from_tty, PR_SYSEXIT, FLAG_SET); | |
c906108c | 5954 | } |
c906108c | 5955 | |
19958708 | 5956 | static void |
fba45db2 | 5957 | proc_untrace_sysentry_cmd (char *args, int from_tty) |
c3f6f71d JM |
5958 | { |
5959 | proc_trace_syscalls (args, from_tty, PR_SYSENTRY, FLAG_RESET); | |
5960 | } | |
5961 | ||
19958708 | 5962 | static void |
fba45db2 | 5963 | proc_untrace_sysexit_cmd (char *args, int from_tty) |
c906108c | 5964 | { |
c3f6f71d JM |
5965 | proc_trace_syscalls (args, from_tty, PR_SYSEXIT, FLAG_RESET); |
5966 | } | |
c906108c | 5967 | |
c906108c | 5968 | |
c906108c | 5969 | void |
fba45db2 | 5970 | _initialize_procfs (void) |
c906108c | 5971 | { |
c906108c SS |
5972 | init_procfs_ops (); |
5973 | add_target (&procfs_ops); | |
1bedd215 AC |
5974 | add_info ("proc", info_proc_cmd, _("\ |
5975 | Show /proc process information about any running process.\n\ | |
388faa48 | 5976 | Specify process id, or use the program being debugged by default.\n\ |
1bedd215 | 5977 | Specify keyword 'mappings' for detailed info on memory mappings.")); |
19958708 | 5978 | add_com ("proc-trace-entry", no_class, proc_trace_sysentry_cmd, |
1bedd215 | 5979 | _("Give a trace of entries into the syscall.")); |
19958708 | 5980 | add_com ("proc-trace-exit", no_class, proc_trace_sysexit_cmd, |
1bedd215 | 5981 | _("Give a trace of exits from the syscall.")); |
19958708 | 5982 | add_com ("proc-untrace-entry", no_class, proc_untrace_sysentry_cmd, |
1bedd215 | 5983 | _("Cancel a trace of entries into the syscall.")); |
19958708 | 5984 | add_com ("proc-untrace-exit", no_class, proc_untrace_sysexit_cmd, |
1bedd215 | 5985 | _("Cancel a trace of exits from the syscall.")); |
c3f6f71d JM |
5986 | } |
5987 | ||
5988 | /* =================== END, GDB "MODULE" =================== */ | |
5989 | ||
5990 | ||
5991 | ||
65554fef | 5992 | /* miscellaneous stubs: */ |
c3f6f71d JM |
5993 | /* The following satisfy a few random symbols mostly created by */ |
5994 | /* the solaris threads implementation, which I will chase down */ | |
5995 | /* later. */ | |
5996 | ||
5997 | /* | |
5998 | * Return a pid for which we guarantee | |
5999 | * we will be able to find a 'live' procinfo. | |
6000 | */ | |
6001 | ||
39f77062 | 6002 | ptid_t |
fba45db2 | 6003 | procfs_first_available (void) |
c3f6f71d | 6004 | { |
39f77062 | 6005 | return pid_to_ptid (procinfo_list ? procinfo_list->pid : -1); |
c3f6f71d | 6006 | } |
be4d1333 MS |
6007 | |
6008 | /* =================== GCORE .NOTE "MODULE" =================== */ | |
65554fef MS |
6009 | #if defined (UNIXWARE) || defined (PIOCOPENLWP) || defined (PCAGENT) |
6010 | /* gcore only implemented on solaris and unixware (so far) */ | |
be4d1333 MS |
6011 | |
6012 | static char * | |
19958708 | 6013 | procfs_do_thread_registers (bfd *obfd, ptid_t ptid, |
be4d1333 MS |
6014 | char *note_data, int *note_size) |
6015 | { | |
6016 | gdb_gregset_t gregs; | |
6017 | gdb_fpregset_t fpregs; | |
6018 | unsigned long merged_pid; | |
6019 | ||
6020 | merged_pid = TIDGET (ptid) << 16 | PIDGET (ptid); | |
6021 | ||
7f7fe91e | 6022 | fill_gregset (current_regcache, &gregs, -1); |
65554fef MS |
6023 | #if defined (UNIXWARE) |
6024 | note_data = (char *) elfcore_write_lwpstatus (obfd, | |
6025 | note_data, | |
6026 | note_size, | |
19958708 | 6027 | merged_pid, |
65554fef MS |
6028 | stop_signal, |
6029 | &gregs); | |
6030 | #else | |
be4d1333 | 6031 | note_data = (char *) elfcore_write_prstatus (obfd, |
65554fef MS |
6032 | note_data, |
6033 | note_size, | |
19958708 | 6034 | merged_pid, |
be4d1333 | 6035 | stop_signal, |
65554fef MS |
6036 | &gregs); |
6037 | #endif | |
7f7fe91e | 6038 | fill_fpregset (current_regcache, &fpregs, -1); |
be4d1333 MS |
6039 | note_data = (char *) elfcore_write_prfpreg (obfd, |
6040 | note_data, | |
6041 | note_size, | |
6042 | &fpregs, | |
6043 | sizeof (fpregs)); | |
6044 | return note_data; | |
6045 | } | |
6046 | ||
6047 | struct procfs_corefile_thread_data { | |
6048 | bfd *obfd; | |
6049 | char *note_data; | |
6050 | int *note_size; | |
6051 | }; | |
6052 | ||
6053 | static int | |
65554fef | 6054 | procfs_corefile_thread_callback (procinfo *pi, procinfo *thread, void *data) |
be4d1333 MS |
6055 | { |
6056 | struct procfs_corefile_thread_data *args = data; | |
be4d1333 | 6057 | |
65554fef | 6058 | if (pi != NULL && thread->tid != 0) |
be4d1333 MS |
6059 | { |
6060 | ptid_t saved_ptid = inferior_ptid; | |
65554fef | 6061 | inferior_ptid = MERGEPID (pi->pid, thread->tid); |
19958708 RM |
6062 | args->note_data = procfs_do_thread_registers (args->obfd, inferior_ptid, |
6063 | args->note_data, | |
be4d1333 MS |
6064 | args->note_size); |
6065 | inferior_ptid = saved_ptid; | |
6066 | } | |
6067 | return 0; | |
6068 | } | |
6069 | ||
6070 | static char * | |
6071 | procfs_make_note_section (bfd *obfd, int *note_size) | |
6072 | { | |
6073 | struct cleanup *old_chain; | |
6074 | gdb_gregset_t gregs; | |
6075 | gdb_fpregset_t fpregs; | |
6076 | char fname[16] = {'\0'}; | |
6077 | char psargs[80] = {'\0'}; | |
6078 | procinfo *pi = find_procinfo_or_die (PIDGET (inferior_ptid), 0); | |
6079 | char *note_data = NULL; | |
6dbdc4a3 | 6080 | char *inf_args; |
be4d1333 | 6081 | struct procfs_corefile_thread_data thread_args; |
4e73f23d RM |
6082 | char *auxv; |
6083 | int auxv_len; | |
be4d1333 MS |
6084 | |
6085 | if (get_exec_file (0)) | |
6086 | { | |
6087 | strncpy (fname, strrchr (get_exec_file (0), '/') + 1, sizeof (fname)); | |
19958708 | 6088 | strncpy (psargs, get_exec_file (0), |
be4d1333 | 6089 | sizeof (psargs)); |
6dbdc4a3 MS |
6090 | |
6091 | inf_args = get_inferior_args (); | |
6092 | if (inf_args && *inf_args && | |
6093 | strlen (inf_args) < ((int) sizeof (psargs) - (int) strlen (psargs))) | |
be4d1333 | 6094 | { |
19958708 | 6095 | strncat (psargs, " ", |
be4d1333 | 6096 | sizeof (psargs) - strlen (psargs)); |
19958708 | 6097 | strncat (psargs, inf_args, |
be4d1333 MS |
6098 | sizeof (psargs) - strlen (psargs)); |
6099 | } | |
6100 | } | |
6101 | ||
19958708 RM |
6102 | note_data = (char *) elfcore_write_prpsinfo (obfd, |
6103 | note_data, | |
6104 | note_size, | |
6105 | fname, | |
be4d1333 MS |
6106 | psargs); |
6107 | ||
65554fef | 6108 | #ifdef UNIXWARE |
7f7fe91e | 6109 | fill_gregset (current_regcache, &gregs, -1); |
19958708 RM |
6110 | note_data = elfcore_write_pstatus (obfd, note_data, note_size, |
6111 | PIDGET (inferior_ptid), | |
65554fef MS |
6112 | stop_signal, &gregs); |
6113 | #endif | |
6114 | ||
be4d1333 MS |
6115 | thread_args.obfd = obfd; |
6116 | thread_args.note_data = note_data; | |
6117 | thread_args.note_size = note_size; | |
65554fef MS |
6118 | proc_iterate_over_threads (pi, procfs_corefile_thread_callback, &thread_args); |
6119 | ||
be4d1333 MS |
6120 | if (thread_args.note_data == note_data) |
6121 | { | |
6122 | /* iterate_over_threads didn't come up with any threads; | |
6123 | just use inferior_ptid. */ | |
19958708 | 6124 | note_data = procfs_do_thread_registers (obfd, inferior_ptid, |
be4d1333 MS |
6125 | note_data, note_size); |
6126 | } | |
6127 | else | |
6128 | { | |
6129 | note_data = thread_args.note_data; | |
6130 | } | |
6131 | ||
13547ab6 DJ |
6132 | auxv_len = target_read_alloc (¤t_target, TARGET_OBJECT_AUXV, |
6133 | NULL, &auxv); | |
4e73f23d RM |
6134 | if (auxv_len > 0) |
6135 | { | |
6136 | note_data = elfcore_write_note (obfd, note_data, note_size, | |
6137 | "CORE", NT_AUXV, auxv, auxv_len); | |
6138 | xfree (auxv); | |
6139 | } | |
6140 | ||
be4d1333 MS |
6141 | make_cleanup (xfree, note_data); |
6142 | return note_data; | |
6143 | } | |
65554fef MS |
6144 | #else /* !(Solaris or Unixware) */ |
6145 | static char * | |
6146 | procfs_make_note_section (bfd *obfd, int *note_size) | |
6147 | { | |
8a3fe4f8 | 6148 | error (_("gcore not implemented for this host.")); |
65554fef MS |
6149 | return NULL; /* lint */ |
6150 | } | |
6151 | #endif /* Solaris or Unixware */ | |
be4d1333 | 6152 | /* =================== END GCORE .NOTE "MODULE" =================== */ |