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change delegation for to_read_description

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This switches to_read_description to the "new normal" delegation
scheme.  This one was a bit trickier than the other changes due to the
way that target_read_description handled delegation.  I examined all
the target implementations of to_read_description and changed the ones
returning NULL to instead delegate.

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

	* arm-linux-nat.c (arm_linux_read_description): Delegate when
	needed.
	* corelow.c (core_read_description): Delegate when needed.
	* remote.c (remote_read_description): Delegate when needed.
	* target-delegates.c: Rebuild.
	* target.c (target_read_description): Rewrite.
	* target.h (struct target_ops) <to_read_description>: Update
	comment.  Use TARGET_DEFAULT_RETURN.
This commit is contained in:
Tom Tromey
2014-01-13 09:30:30 -07:00
parent e88ef65ce5
commit 2117c711ae
7 changed files with 47 additions and 25 deletions
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12
gdb/corelow.c
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@@ -913,10 +913,16 @@ static const struct target_desc *
core_read_description (struct target_ops *target)
{
if (core_gdbarch && gdbarch_core_read_description_p (core_gdbarch))
return gdbarch_core_read_description (core_gdbarch,
target, core_bfd);
{
const struct target_desc *result;
return NULL;
result = gdbarch_core_read_description (core_gdbarch,
target, core_bfd);
if (result != NULL)
return result;
}
return target->beneath->to_read_description (target->beneath);
}
static char *