Ensure ptrace() calls cast arguments 3 and 4 appropriately.
* linux-low.c (handle_extended_wait, linux_create_inferior) (linux_attach_lwp_1, linux_kill_one_lwp, linux_attach_one_lwp) (dequeue_one_deferred_signal, linux_resume_one_thread) (fetch_register, linux_write_memory, linux_enable_event_reporting) (linux_tracefork_grandchild, linux_test_for_tracefork) (linux_read_offsets, linux_xfer_siginfo, linux_xfer_siginfo ): Add PTRACE_ARG3_TYPE and PTRACE_ARG4_TYPE cast to ptrace arguments where the argument is 0.
This commit is contained in:
parent
5ee43bc47a
commit
56f7af9cb0
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@ -1,3 +1,14 @@
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2013-02-04 Marcus Shawcroft <marcus.shawcroft@arm.com>
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* linux-low.c (handle_extended_wait, linux_create_inferior)
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(linux_attach_lwp_1, linux_kill_one_lwp, linux_attach_one_lwp)
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(dequeue_one_deferred_signal, linux_resume_one_thread)
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(fetch_register, linux_write_memory, linux_enable_event_reporting)
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(linux_tracefork_grandchild, linux_test_for_tracefork)
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(linux_read_offsets, linux_xfer_siginfo, linux_xfer_siginfo): Add
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PTRACE_ARG3_TYPE and PTRACE_ARG4_TYPE cast to ptrace arguments
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where the argument is 0.
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2013-01-25 Yao Qi <yao@codesourcery.com>
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2013-01-25 Yao Qi <yao@codesourcery.com>
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* event-loop.c: Include "queue.h".
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* event-loop.c: Include "queue.h".
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@ -445,7 +445,8 @@ handle_extended_wait (struct lwp_info *event_child, int wstat)
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unsigned long new_pid;
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unsigned long new_pid;
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int ret, status;
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int ret, status;
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ptrace (PTRACE_GETEVENTMSG, lwpid_of (event_child), 0, &new_pid);
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ptrace (PTRACE_GETEVENTMSG, lwpid_of (event_child), (PTRACE_ARG3_TYPE) 0,
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&new_pid);
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/* If we haven't already seen the new PID stop, wait for it now. */
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/* If we haven't already seen the new PID stop, wait for it now. */
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if (!pull_pid_from_list (&stopped_pids, new_pid, &status))
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if (!pull_pid_from_list (&stopped_pids, new_pid, &status))
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@ -641,7 +642,7 @@ linux_create_inferior (char *program, char **allargs)
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if (pid == 0)
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if (pid == 0)
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{
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{
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ptrace (PTRACE_TRACEME, 0, 0, 0);
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ptrace (PTRACE_TRACEME, 0, (PTRACE_ARG3_TYPE) 0, (PTRACE_ARG4_TYPE) 0);
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#ifndef __ANDROID__ /* Bionic doesn't use SIGRTMIN the way glibc does. */
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#ifndef __ANDROID__ /* Bionic doesn't use SIGRTMIN the way glibc does. */
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signal (__SIGRTMIN + 1, SIG_DFL);
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signal (__SIGRTMIN + 1, SIG_DFL);
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@ -703,7 +704,8 @@ linux_attach_lwp_1 (unsigned long lwpid, int initial)
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ptid_t ptid;
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ptid_t ptid;
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struct lwp_info *new_lwp;
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struct lwp_info *new_lwp;
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if (ptrace (PTRACE_ATTACH, lwpid, 0, 0) != 0)
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if (ptrace (PTRACE_ATTACH, lwpid, (PTRACE_ARG3_TYPE) 0, (PTRACE_ARG4_TYPE) 0)
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!= 0)
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{
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{
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struct buffer buffer;
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struct buffer buffer;
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@ -769,7 +771,7 @@ linux_attach_lwp_1 (unsigned long lwpid, int initial)
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/* Finally, resume the stopped process. This will deliver the
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/* Finally, resume the stopped process. This will deliver the
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SIGSTOP (or a higher priority signal, just like normal
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SIGSTOP (or a higher priority signal, just like normal
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PTRACE_ATTACH), which we'll catch later on. */
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PTRACE_ATTACH), which we'll catch later on. */
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ptrace (PTRACE_CONT, lwpid, 0, 0);
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ptrace (PTRACE_CONT, lwpid, (PTRACE_ARG3_TYPE) 0, (PTRACE_ARG4_TYPE) 0);
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}
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}
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/* The next time we wait for this LWP we'll see a SIGSTOP as PTRACE_ATTACH
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/* The next time we wait for this LWP we'll see a SIGSTOP as PTRACE_ATTACH
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@ -960,7 +962,7 @@ linux_kill_one_lwp (struct lwp_info *lwp)
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errno ? strerror (errno) : "OK");
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errno ? strerror (errno) : "OK");
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errno = 0;
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errno = 0;
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ptrace (PTRACE_KILL, pid, 0, 0);
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ptrace (PTRACE_KILL, pid, (PTRACE_ARG3_TYPE) 0, (PTRACE_ARG4_TYPE) 0);
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if (debug_threads)
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if (debug_threads)
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fprintf (stderr,
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fprintf (stderr,
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"LKL: PTRACE_KILL %s, 0, 0 (%s)\n",
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"LKL: PTRACE_KILL %s, 0, 0 (%s)\n",
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@ -1174,7 +1176,7 @@ linux_detach_one_lwp (struct inferior_list_entry *entry, void *args)
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/* Finally, let it resume. */
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/* Finally, let it resume. */
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if (the_low_target.prepare_to_resume != NULL)
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if (the_low_target.prepare_to_resume != NULL)
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the_low_target.prepare_to_resume (lwp);
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the_low_target.prepare_to_resume (lwp);
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if (ptrace (PTRACE_DETACH, lwpid_of (lwp), 0,
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if (ptrace (PTRACE_DETACH, lwpid_of (lwp), (PTRACE_ARG3_TYPE) 0,
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(PTRACE_ARG4_TYPE) (long) sig) < 0)
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(PTRACE_ARG4_TYPE) (long) sig) < 0)
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error (_("Can't detach %s: %s"),
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error (_("Can't detach %s: %s"),
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target_pid_to_str (ptid_of (lwp)),
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target_pid_to_str (ptid_of (lwp)),
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@ -1605,13 +1607,15 @@ Checking whether LWP %ld needs to move out of the jump pad...it does\n",
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|| WSTOPSIG (*wstat) == SIGFPE
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|| WSTOPSIG (*wstat) == SIGFPE
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|| WSTOPSIG (*wstat) == SIGBUS
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|| WSTOPSIG (*wstat) == SIGBUS
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|| WSTOPSIG (*wstat) == SIGSEGV)
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|| WSTOPSIG (*wstat) == SIGSEGV)
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&& ptrace (PTRACE_GETSIGINFO, lwpid_of (lwp), 0, &info) == 0
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&& ptrace (PTRACE_GETSIGINFO, lwpid_of (lwp),
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(PTRACE_ARG3_TYPE) 0, &info) == 0
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/* Final check just to make sure we don't clobber
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/* Final check just to make sure we don't clobber
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the siginfo of non-kernel-sent signals. */
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the siginfo of non-kernel-sent signals. */
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&& (uintptr_t) info.si_addr == lwp->stop_pc)
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&& (uintptr_t) info.si_addr == lwp->stop_pc)
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{
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{
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info.si_addr = (void *) (uintptr_t) status.tpoint_addr;
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info.si_addr = (void *) (uintptr_t) status.tpoint_addr;
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ptrace (PTRACE_SETSIGINFO, lwpid_of (lwp), 0, &info);
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ptrace (PTRACE_SETSIGINFO, lwpid_of (lwp),
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(PTRACE_ARG3_TYPE) 0, &info);
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}
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}
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regcache = get_thread_regcache (get_lwp_thread (lwp), 1);
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regcache = get_thread_regcache (get_lwp_thread (lwp), 1);
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@ -1706,7 +1710,8 @@ Deferring signal %d for LWP %ld.\n", WSTOPSIG (*wstat), lwpid_of (lwp));
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p_sig->prev = lwp->pending_signals_to_report;
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p_sig->prev = lwp->pending_signals_to_report;
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p_sig->signal = WSTOPSIG (*wstat);
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p_sig->signal = WSTOPSIG (*wstat);
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memset (&p_sig->info, 0, sizeof (siginfo_t));
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memset (&p_sig->info, 0, sizeof (siginfo_t));
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ptrace (PTRACE_GETSIGINFO, lwpid_of (lwp), 0, &p_sig->info);
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ptrace (PTRACE_GETSIGINFO, lwpid_of (lwp), (PTRACE_ARG3_TYPE) 0,
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&p_sig->info);
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lwp->pending_signals_to_report = p_sig;
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lwp->pending_signals_to_report = p_sig;
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}
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}
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@ -1727,7 +1732,8 @@ dequeue_one_deferred_signal (struct lwp_info *lwp, int *wstat)
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*wstat = W_STOPCODE ((*p_sig)->signal);
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*wstat = W_STOPCODE ((*p_sig)->signal);
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if ((*p_sig)->info.si_signo != 0)
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if ((*p_sig)->info.si_signo != 0)
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ptrace (PTRACE_SETSIGINFO, lwpid_of (lwp), 0, &(*p_sig)->info);
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ptrace (PTRACE_SETSIGINFO, lwpid_of (lwp), (PTRACE_ARG3_TYPE) 0,
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&(*p_sig)->info);
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free (*p_sig);
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free (*p_sig);
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*p_sig = NULL;
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*p_sig = NULL;
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@ -2597,7 +2603,8 @@ Check if we're already there.\n",
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fprintf (stderr, "Ignored signal %d for LWP %ld.\n",
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fprintf (stderr, "Ignored signal %d for LWP %ld.\n",
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WSTOPSIG (w), lwpid_of (event_child));
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WSTOPSIG (w), lwpid_of (event_child));
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if (ptrace (PTRACE_GETSIGINFO, lwpid_of (event_child), 0, &info) == 0)
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if (ptrace (PTRACE_GETSIGINFO, lwpid_of (event_child),
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(PTRACE_ARG3_TYPE) 0, &info) == 0)
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info_p = &info;
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info_p = &info;
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else
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else
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info_p = NULL;
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info_p = NULL;
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@ -3277,7 +3284,8 @@ lwp %ld wants to get out of fast tracepoint jump pad single-stepping\n",
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signal = (*p_sig)->signal;
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signal = (*p_sig)->signal;
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if ((*p_sig)->info.si_signo != 0)
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if ((*p_sig)->info.si_signo != 0)
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ptrace (PTRACE_SETSIGINFO, lwpid_of (lwp), 0, &(*p_sig)->info);
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ptrace (PTRACE_SETSIGINFO, lwpid_of (lwp), (PTRACE_ARG3_TYPE) 0,
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&(*p_sig)->info);
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free (*p_sig);
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free (*p_sig);
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*p_sig = NULL;
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*p_sig = NULL;
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@ -3292,7 +3300,8 @@ lwp %ld wants to get out of fast tracepoint jump pad single-stepping\n",
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lwp->stopped = 0;
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lwp->stopped = 0;
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lwp->stopped_by_watchpoint = 0;
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lwp->stopped_by_watchpoint = 0;
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lwp->stepping = step;
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lwp->stepping = step;
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ptrace (step ? PTRACE_SINGLESTEP : PTRACE_CONT, lwpid_of (lwp), 0,
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ptrace (step ? PTRACE_SINGLESTEP : PTRACE_CONT, lwpid_of (lwp),
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(PTRACE_ARG3_TYPE) 0,
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/* Coerce to a uintptr_t first to avoid potential gcc warning
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/* Coerce to a uintptr_t first to avoid potential gcc warning
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of coercing an 8 byte integer to a 4 byte pointer. */
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of coercing an 8 byte integer to a 4 byte pointer. */
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(PTRACE_ARG4_TYPE) (uintptr_t) signal);
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(PTRACE_ARG4_TYPE) (uintptr_t) signal);
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@ -3760,7 +3769,8 @@ linux_resume_one_thread (struct inferior_list_entry *entry, void *arg)
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PTRACE_SETSIGINFO. */
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PTRACE_SETSIGINFO. */
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if (WIFSTOPPED (lwp->last_status)
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if (WIFSTOPPED (lwp->last_status)
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&& WSTOPSIG (lwp->last_status) == lwp->resume->sig)
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&& WSTOPSIG (lwp->last_status) == lwp->resume->sig)
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ptrace (PTRACE_GETSIGINFO, lwpid_of (lwp), 0, &p_sig->info);
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ptrace (PTRACE_GETSIGINFO, lwpid_of (lwp), (PTRACE_ARG3_TYPE) 0,
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&p_sig->info);
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lwp->pending_signals = p_sig;
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lwp->pending_signals = p_sig;
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}
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}
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@ -4221,7 +4231,7 @@ fetch_register (struct regcache *regcache, int regno)
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ptrace (PTRACE_PEEKUSER, pid,
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ptrace (PTRACE_PEEKUSER, pid,
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/* Coerce to a uintptr_t first to avoid potential gcc warning
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/* Coerce to a uintptr_t first to avoid potential gcc warning
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of coercing an 8 byte integer to a 4 byte pointer. */
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of coercing an 8 byte integer to a 4 byte pointer. */
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(PTRACE_ARG3_TYPE) (uintptr_t) regaddr, 0);
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(PTRACE_ARG3_TYPE) (uintptr_t) regaddr, (PTRACE_ARG4_TYPE) 0);
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regaddr += sizeof (PTRACE_XFER_TYPE);
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regaddr += sizeof (PTRACE_XFER_TYPE);
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if (errno != 0)
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if (errno != 0)
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error ("reading register %d: %s", regno, strerror (errno));
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error ("reading register %d: %s", regno, strerror (errno));
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@ -4449,7 +4459,8 @@ linux_read_memory (CORE_ADDR memaddr, unsigned char *myaddr, int len)
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/* Coerce the 3rd arg to a uintptr_t first to avoid potential gcc warning
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/* Coerce the 3rd arg to a uintptr_t first to avoid potential gcc warning
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about coercing an 8 byte integer to a 4 byte pointer. */
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about coercing an 8 byte integer to a 4 byte pointer. */
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buffer[i] = ptrace (PTRACE_PEEKTEXT, pid,
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buffer[i] = ptrace (PTRACE_PEEKTEXT, pid,
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(PTRACE_ARG3_TYPE) (uintptr_t) addr, 0);
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(PTRACE_ARG3_TYPE) (uintptr_t) addr,
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(PTRACE_ARG4_TYPE) 0);
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if (errno)
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if (errno)
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break;
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break;
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}
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}
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@ -4509,7 +4520,8 @@ linux_write_memory (CORE_ADDR memaddr, const unsigned char *myaddr, int len)
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/* Coerce the 3rd arg to a uintptr_t first to avoid potential gcc warning
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/* Coerce the 3rd arg to a uintptr_t first to avoid potential gcc warning
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about coercing an 8 byte integer to a 4 byte pointer. */
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about coercing an 8 byte integer to a 4 byte pointer. */
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buffer[0] = ptrace (PTRACE_PEEKTEXT, pid,
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buffer[0] = ptrace (PTRACE_PEEKTEXT, pid,
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(PTRACE_ARG3_TYPE) (uintptr_t) addr, 0);
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(PTRACE_ARG3_TYPE) (uintptr_t) addr,
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(PTRACE_ARG4_TYPE) 0);
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if (errno)
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if (errno)
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return errno;
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return errno;
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@ -4522,7 +4534,7 @@ linux_write_memory (CORE_ADDR memaddr, const unsigned char *myaddr, int len)
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about coercing an 8 byte integer to a 4 byte pointer. */
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about coercing an 8 byte integer to a 4 byte pointer. */
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(PTRACE_ARG3_TYPE) (uintptr_t) (addr + (count - 1)
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(PTRACE_ARG3_TYPE) (uintptr_t) (addr + (count - 1)
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* sizeof (PTRACE_XFER_TYPE)),
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* sizeof (PTRACE_XFER_TYPE)),
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0);
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(PTRACE_ARG4_TYPE) 0);
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if (errno)
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if (errno)
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return errno;
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return errno;
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}
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}
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@ -4558,7 +4570,8 @@ linux_enable_event_reporting (int pid)
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if (!linux_supports_tracefork_flag)
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if (!linux_supports_tracefork_flag)
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return;
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return;
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ptrace (PTRACE_SETOPTIONS, pid, 0, (PTRACE_ARG4_TYPE) PTRACE_O_TRACECLONE);
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ptrace (PTRACE_SETOPTIONS, pid, (PTRACE_ARG3_TYPE) 0,
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(PTRACE_ARG4_TYPE) PTRACE_O_TRACECLONE);
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}
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}
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/* Helper functions for linux_test_for_tracefork, called via clone (). */
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/* Helper functions for linux_test_for_tracefork, called via clone (). */
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@ -4574,7 +4587,7 @@ linux_tracefork_grandchild (void *arg)
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static int
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static int
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linux_tracefork_child (void *arg)
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linux_tracefork_child (void *arg)
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{
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{
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ptrace (PTRACE_TRACEME, 0, 0, 0);
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ptrace (PTRACE_TRACEME, 0, (PTRACE_ARG3_TYPE) 0, (PTRACE_ARG4_TYPE) 0);
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kill (getpid (), SIGSTOP);
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kill (getpid (), SIGSTOP);
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#if !(defined(__UCLIBC__) && defined(HAS_NOMMU))
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#if !(defined(__UCLIBC__) && defined(HAS_NOMMU))
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@ -4642,11 +4655,12 @@ linux_test_for_tracefork (void)
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if (! WIFSTOPPED (status))
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if (! WIFSTOPPED (status))
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error ("linux_test_for_tracefork: waitpid: unexpected status %d.", status);
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error ("linux_test_for_tracefork: waitpid: unexpected status %d.", status);
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ret = ptrace (PTRACE_SETOPTIONS, child_pid, 0,
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ret = ptrace (PTRACE_SETOPTIONS, child_pid, (PTRACE_ARG3_TYPE) 0,
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(PTRACE_ARG4_TYPE) PTRACE_O_TRACEFORK);
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(PTRACE_ARG4_TYPE) PTRACE_O_TRACEFORK);
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if (ret != 0)
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if (ret != 0)
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{
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{
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ret = ptrace (PTRACE_KILL, child_pid, 0, 0);
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ret = ptrace (PTRACE_KILL, child_pid, (PTRACE_ARG3_TYPE) 0,
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(PTRACE_ARG4_TYPE) 0);
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if (ret != 0)
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if (ret != 0)
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{
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{
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warning ("linux_test_for_tracefork: failed to kill child");
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warning ("linux_test_for_tracefork: failed to kill child");
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@ -4663,7 +4677,8 @@ linux_test_for_tracefork (void)
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return;
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return;
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}
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}
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ret = ptrace (PTRACE_CONT, child_pid, 0, 0);
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ret = ptrace (PTRACE_CONT, child_pid, (PTRACE_ARG3_TYPE) 0,
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(PTRACE_ARG4_TYPE) 0);
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if (ret != 0)
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if (ret != 0)
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warning ("linux_test_for_tracefork: failed to resume child");
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warning ("linux_test_for_tracefork: failed to resume child");
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@ -4673,14 +4688,16 @@ linux_test_for_tracefork (void)
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&& status >> 16 == PTRACE_EVENT_FORK)
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&& status >> 16 == PTRACE_EVENT_FORK)
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{
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{
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second_pid = 0;
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second_pid = 0;
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ret = ptrace (PTRACE_GETEVENTMSG, child_pid, 0, &second_pid);
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ret = ptrace (PTRACE_GETEVENTMSG, child_pid, (PTRACE_ARG3_TYPE) 0,
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&second_pid);
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if (ret == 0 && second_pid != 0)
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if (ret == 0 && second_pid != 0)
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{
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{
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int second_status;
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int second_status;
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linux_supports_tracefork_flag = 1;
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linux_supports_tracefork_flag = 1;
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my_waitpid (second_pid, &second_status, 0);
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my_waitpid (second_pid, &second_status, 0);
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ret = ptrace (PTRACE_KILL, second_pid, 0, 0);
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ret = ptrace (PTRACE_KILL, second_pid, (PTRACE_ARG3_TYPE) 0,
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(PTRACE_ARG4_TYPE) 0);
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if (ret != 0)
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if (ret != 0)
|
||||||
warning ("linux_test_for_tracefork: failed to kill second child");
|
warning ("linux_test_for_tracefork: failed to kill second child");
|
||||||
my_waitpid (second_pid, &status, 0);
|
my_waitpid (second_pid, &status, 0);
|
||||||
|
@ -4692,7 +4709,8 @@ linux_test_for_tracefork (void)
|
||||||
|
|
||||||
do
|
do
|
||||||
{
|
{
|
||||||
ret = ptrace (PTRACE_KILL, child_pid, 0, 0);
|
ret = ptrace (PTRACE_KILL, child_pid, (PTRACE_ARG3_TYPE) 0,
|
||||||
|
(PTRACE_ARG4_TYPE) 0);
|
||||||
if (ret != 0)
|
if (ret != 0)
|
||||||
warning ("linux_test_for_tracefork: failed to kill child");
|
warning ("linux_test_for_tracefork: failed to kill child");
|
||||||
my_waitpid (child_pid, &status, 0);
|
my_waitpid (child_pid, &status, 0);
|
||||||
|
@ -4839,9 +4857,12 @@ linux_read_offsets (CORE_ADDR *text_p, CORE_ADDR *data_p)
|
||||||
|
|
||||||
errno = 0;
|
errno = 0;
|
||||||
|
|
||||||
text = ptrace (PTRACE_PEEKUSER, pid, (long)PT_TEXT_ADDR, 0);
|
text = ptrace (PTRACE_PEEKUSER, pid, (PTRACE_ARG3_TYPE) PT_TEXT_ADDR,
|
||||||
text_end = ptrace (PTRACE_PEEKUSER, pid, (long)PT_TEXT_END_ADDR, 0);
|
(PTRACE_ARG4_TYPE) 0);
|
||||||
data = ptrace (PTRACE_PEEKUSER, pid, (long)PT_DATA_ADDR, 0);
|
text_end = ptrace (PTRACE_PEEKUSER, pid, (PTRACE_ARG3_TYPE) PT_TEXT_END_ADDR,
|
||||||
|
(PTRACE_ARG4_TYPE) 0);
|
||||||
|
data = ptrace (PTRACE_PEEKUSER, pid, (PTRACE_ARG3_TYPE) PT_DATA_ADDR,
|
||||||
|
(PTRACE_ARG4_TYPE) 0);
|
||||||
|
|
||||||
if (errno == 0)
|
if (errno == 0)
|
||||||
{
|
{
|
||||||
|
@ -4915,7 +4936,7 @@ linux_xfer_siginfo (const char *annex, unsigned char *readbuf,
|
||||||
if (offset >= sizeof (siginfo))
|
if (offset >= sizeof (siginfo))
|
||||||
return -1;
|
return -1;
|
||||||
|
|
||||||
if (ptrace (PTRACE_GETSIGINFO, pid, 0, &siginfo) != 0)
|
if (ptrace (PTRACE_GETSIGINFO, pid, (PTRACE_ARG3_TYPE) 0, &siginfo) != 0)
|
||||||
return -1;
|
return -1;
|
||||||
|
|
||||||
/* When GDBSERVER is built as a 64-bit application, ptrace writes into
|
/* When GDBSERVER is built as a 64-bit application, ptrace writes into
|
||||||
|
@ -4936,7 +4957,7 @@ linux_xfer_siginfo (const char *annex, unsigned char *readbuf,
|
||||||
/* Convert back to ptrace layout before flushing it out. */
|
/* Convert back to ptrace layout before flushing it out. */
|
||||||
siginfo_fixup (&siginfo, inf_siginfo, 1);
|
siginfo_fixup (&siginfo, inf_siginfo, 1);
|
||||||
|
|
||||||
if (ptrace (PTRACE_SETSIGINFO, pid, 0, &siginfo) != 0)
|
if (ptrace (PTRACE_SETSIGINFO, pid, (PTRACE_ARG3_TYPE) 0, &siginfo) != 0)
|
||||||
return -1;
|
return -1;
|
||||||
}
|
}
|
||||||
|
|
||||||
|
|
Loading…
Reference in New Issue