aefb0e1e23
- Backported post gdb-6.6 release ia64 unwinding fixups. - Testcase for exec() from threaded program (BZ 202689). - Resolves: rhbz#221125 - Related: rhbz#202689
115 lines
3.4 KiB
Diff
115 lines
3.4 KiB
Diff
Index: gdb-6.6/gdb/doc/observer.texi
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===================================================================
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--- gdb-6.6.orig/gdb/doc/observer.texi
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+++ gdb-6.6/gdb/doc/observer.texi
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@@ -119,6 +119,10 @@ when @value{GDBN} calls this observer, t
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haven't been loaded yet.
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@end deftypefun
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+@deftypefun void mourn_inferior (struct target_ops *@var{target})
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+@value{GDBN} has just detached from an inferior.
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+@end deftypefun
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+
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@deftypefun void solib_unloaded (struct so_list *@var{solib})
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The shared library specified by @var{solib} has been unloaded.
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@end deftypefun
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Index: gdb-6.6/gdb/linux-nat.c
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===================================================================
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--- gdb-6.6.orig/gdb/linux-nat.c
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+++ gdb-6.6/gdb/linux-nat.c
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@@ -803,11 +803,23 @@ iterate_over_lwps (int (*callback) (stru
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{
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struct lwp_info *lp, *lpnext;
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- for (lp = lwp_list; lp; lp = lpnext)
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+ if (lwp_list != NULL)
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{
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- lpnext = lp->next;
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+ for (lp = lwp_list; lp; lp = lpnext)
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+ {
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+ lpnext = lp->next;
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+ if ((*callback) (lp, data))
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+ return lp;
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+ }
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+ }
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+ else
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+ {
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+ /* We are calling iterate_over_lwps for a non-threaded program.
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+ Initialize the lwp list to the inferior's ptid. */
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+ lp = add_lwp (BUILD_LWP (GET_PID (inferior_ptid),
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+ GET_PID (inferior_ptid)));
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if ((*callback) (lp, data))
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- return lp;
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+ return lp;
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}
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return NULL;
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@@ -3262,6 +3274,18 @@ linux_nat_add_target (struct target_ops
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thread_db_init (t);
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}
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+/* Observer function for a mourn inferior event. This is needed
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+ because if iterate_over_lwps is called for a non-threaded program
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+ to handle watchpoints, the lwp list gets initialized but there is
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+ no corresponding clean-up when the inferior is detached. In
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+ a threaded program, the observer is simply redundant as the
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+ same clean-up gets done in linux_nat_mourn_inferior. */
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+static void
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+linux_nat_mourn_inferior_observer (struct target_ops *objfile)
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+{
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+ init_lwp_list ();
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+}
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+
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void
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_initialize_linux_nat (void)
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{
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@@ -3276,6 +3300,8 @@ Specify any of the following keywords fo
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status -- list a different bunch of random process info.\n\
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all -- list all available /proc info."));
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+ observer_attach_mourn_inferior (linux_nat_mourn_inferior_observer);
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+
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/* Save the original signal mask. */
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sigprocmask (SIG_SETMASK, NULL, &normal_mask);
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Index: gdb-6.6/gdb/target.c
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===================================================================
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--- gdb-6.6.orig/gdb/target.c
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+++ gdb-6.6/gdb/target.c
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@@ -40,6 +40,7 @@
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#include "gdb_assert.h"
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#include "gdbcore.h"
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#include "exceptions.h"
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+#include "observer.h"
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static void target_info (char *, int);
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@@ -276,6 +277,13 @@ target_load (char *arg, int from_tty)
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(*current_target.to_load) (arg, from_tty);
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}
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+void
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+target_mourn_inferior (void)
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+{
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+ (*current_target.to_mourn_inferior) ();
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+ observer_notify_mourn_inferior (¤t_target);
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+}
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+
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static int
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nomemory (CORE_ADDR memaddr, char *myaddr, int len, int write,
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struct target_ops *t)
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Index: gdb-6.6/gdb/target.h
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===================================================================
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--- gdb-6.6.orig/gdb/target.h
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+++ gdb-6.6/gdb/target.h
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@@ -891,8 +891,7 @@ int target_follow_fork (int follow_child
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/* The inferior process has died. Do what is right. */
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-#define target_mourn_inferior() \
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- (*current_target.to_mourn_inferior) ()
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+extern void target_mourn_inferior (void);
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/* Does target have enough data to do a run or attach command? */
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