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2003-03-30 Andrew Cagney <cagney@redhat.com>

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* frame.c (get_frame_base): Force ID initialization.
	(get_prev_frame): Move computation of the frame ID from here ...
	(get_frame_id): ... to here.
	(legacy_get_prev_frame): Mark the frame ID as valid.
	* frame.h (struct frame_info): Add field "id_p".
This commit is contained in:
Andrew Cagney 2003-03-30 16:16:25 +00:00
parent 97a1a11c19
commit 06c77151a5
3 changed files with 30 additions and 29 deletions
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8
gdb/ChangeLog
View File

@ -1,3 +1,11 @@
2003-03-30 Andrew Cagney <cagney@redhat.com>
* frame.c (get_frame_base): Force ID initialization.
(get_prev_frame): Move computation of the frame ID from here ...
(get_frame_id): ... to here.
(legacy_get_prev_frame): Mark the frame ID as valid.
* frame.h (struct frame_info): Add field "id_p".
2003-03-30 Mark Kettenis <kettenis@gnu.org>
* i386-tdep.c (i386_store_struct_return): Removed.

50
gdb/frame.c
View File

@ -57,13 +57,19 @@ get_frame_id (struct frame_info *fi)
{
return null_frame_id;
}
else
if (!fi->id_p)
{
struct frame_id id;
id.base = fi->frame;
id.pc = fi->pc;
return id;
gdb_assert (!legacy_frame_p (current_gdbarch));
/* Find THIS frame's ID. */
fi->unwind->this_id (fi->next, &fi->prologue_cache, &fi->id);
fi->id_p = 1;
/* FIXME: cagney/2002-12-18: Instead of this hack, should only
store the frame ID in PREV_FRAME. Unfortunatly, some
architectures (HP/UX) still reply on EXTRA_FRAME_INFO and,
hence, still poke at the "struct frame_info" object directly. */
fi->frame = fi->id.base;
}
return frame_id_build (fi->frame, fi->pc);
}
const struct frame_id null_frame_id; /* All zeros. */
@ -1038,6 +1044,9 @@ legacy_get_prev_frame (struct frame_info *this_frame)
problem. */
prev->type = NORMAL_FRAME;
/* A legacy frame's ID is always computed here. Mark it as valid. */
prev->id_p = 1;
/* Handle sentinel frame unwind as a special case. */
if (this_frame->level < 0)
{
@ -1546,24 +1555,7 @@ get_prev_frame (struct frame_info *this_frame)
prev_frame->unwind = frame_unwind_find_by_pc (current_gdbarch,
prev_frame->pc);
/* Find the prev's frame's ID. */
/* The callee expects to be invoked with:
this->unwind->this_id (this->next, &this->cache, &this->id);
The below is carefully shifted one frame `to the left' so that
both the unwind->this_id and unwind->prev_register methods are
consistently invoked with NEXT_FRAME and THIS_PROLOGUE_CACHE.
Also note that, while the PC for this new previous frame was
unwound first (see above), the below is the first call that
[potentially] requires analysis of the new previous frame's
prologue. Consequently, it is this call, that typically ends up
initializing the previous frame's prologue cache. */
prev_frame->unwind->this_id (this_frame,
&prev_frame->prologue_cache,
&prev_frame->id);
/* The prev's frame's ID is computed by demand in get_frame_id(). */
/* The unwound frame ID is validate at the start of this function,
as part of the logic to decide if that frame should be further
@ -1577,12 +1569,6 @@ get_prev_frame (struct frame_info *this_frame)
return 0 (indicating we don't know the address of the arglist) if
we don't know what frame this frame calls. */
/* FIXME: cagney/2002-12-18: Instead of this hack, should only store
the frame ID in PREV_FRAME. Unfortunatly, some architectures
(HP/UX) still reply on EXTRA_FRAME_INFO and, hence, still poke at
the "struct frame_info" object directly. */
prev_frame->frame = prev_frame->id.base;
/* Link it in. */
this_frame->prev = prev_frame;
prev_frame->next = this_frame;
@ -1624,6 +1610,12 @@ find_frame_sal (struct frame_info *frame, struct symtab_and_line *sal)
CORE_ADDR
get_frame_base (struct frame_info *fi)
{
if (!fi->id_p)
{
/* HACK: Force the ID code to (indirectly) initialize the
->frame pointer. */
get_frame_id (fi);
}
return fi->frame;
}

1
gdb/frame.h
View File

@ -411,6 +411,7 @@ struct frame_info
/* This frame's ID. Note that the frame's ID, base and PC contain
redundant information. */
int id_p;
struct frame_id id;
/* Pointers to the next (down, inner, younger) and previous (up,