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introduce and use find_target_at

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This patch adds find_target_at to determine whether a target appears
at a given stratum.  This new function lets us clean up
find_record_target a bit, and is generally useful.

2014-02-19  Tom Tromey  <tromey@redhat.com>

	* record.c (find_record_target): Use find_target_at.
	* target.c (find_target_at): New function.
	* target.h (find_target_at): Declare.
This commit is contained in:
Tom Tromey 2013-10-28 12:16:24 -06:00
parent 6a109b6b2c
commit 8b06beed0f
4 changed files with 26 additions and 7 deletions
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6
gdb/ChangeLog
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@ -1,3 +1,9 @@
2014-02-19 Tom Tromey <tromey@redhat.com>
* record.c (find_record_target): Use find_target_at.
* target.c (find_target_at): New function.
* target.h (find_target_at): Declare.
2014-02-19 Tom Tromey <tromey@redhat.com>
* aarch64-linux-nat.c (aarch64_linux_stopped_by_watchpoint):

8
gdb/record.c
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@ -62,13 +62,7 @@ struct cmd_list_element *info_record_cmdlist = NULL;
struct target_ops *
find_record_target (void)
{
struct target_ops *t;
for (t = current_target.beneath; t != NULL; t = t->beneath)
if (t->to_stratum == record_stratum)
return t;
return NULL;
return find_target_at (record_stratum);
}
/* Check that recording is active. Throw an error, if it isn't. */

14
gdb/target.c
View File

@ -3748,6 +3748,20 @@ find_target_beneath (struct target_ops *t)
return t->beneath;
}
/* See target.h. */
struct target_ops *
find_target_at (enum strata stratum)
{
struct target_ops *t;
for (t = current_target.beneath; t != NULL; t = t->beneath)
if (t->to_stratum == stratum)
return t;
return NULL;
}
/* The inferior process has died. Long live the inferior! */

5
gdb/target.h
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@ -1968,6 +1968,11 @@ extern void find_default_create_inferior (struct target_ops *,
extern struct target_ops *find_target_beneath (struct target_ops *);
/* Find the target at STRATUM. If no target is at that stratum,
return NULL. */
struct target_ops *find_target_at (enum strata stratum);
/* Read OS data object of type TYPE from the target, and return it in
XML format. The result is NUL-terminated and returned as a string,
allocated using xmalloc. If an error occurs or the transfer is