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2003-06-08 Andrew Cagney <cagney@redhat.com>

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* gdbarch.sh (UNWIND_SP): Add.
	* gdbarch.h, gdbarch.c: Re-generate.
	* frame.c (frame_sp_unwind): New function.
	(get_frame_sp): New function.
	* frame.h (get_frame_sp, frame_sp_unwind): Declare.
	* regcache.c (read_sp): Rewrite, try each of TARGET_READ_SP,
	gdbarch_unwind_sp and SP_REGNUM when looking for the SP register
	value.
	* d10v-tdep.c (d10v_unwind_sp): Replace d10v_read_sp.
	(d10v_gdbarch_init): Set unwind_sp instead of read_sp.

2003-06-08  Andrew Cagney  <cagney@redhat.com>

	* gdbint.texinfo (Target Architecture Definition): Document
	"unwind_sp".  Cross reference "unwind_sp" and TARGET_READ_SP.
This commit is contained in:
Andrew Cagney
2003-06-09 01:02:07 +00:00
parent 5cf72d3591
commit a9e5fdc219
10 changed files with 138 additions and 11 deletions
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31
gdb/frame.c
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@@ -2250,6 +2250,37 @@ get_frame_arch (struct frame_info *this_frame)
return current_gdbarch;
}
/* Stack pointer methods. */
CORE_ADDR
get_frame_sp (struct frame_info *this_frame)
{
return frame_sp_unwind (this_frame->next);
}
CORE_ADDR
frame_sp_unwind (struct frame_info *next_frame)
{
/* Normality, an architecture that provides a way of obtaining any
frame inner-most address. */
if (gdbarch_unwind_sp_p (current_gdbarch))
return gdbarch_unwind_sp (current_gdbarch, next_frame);
/* Things are looking grim. If it's the inner-most frame and there
is a TARGET_READ_SP then that can be used. */
if (next_frame->level < 0 && TARGET_READ_SP_P ())
return TARGET_READ_SP ();
/* Now things are really are grim. Hope that the value returned by
the SP_REGNUM register is meaningful. */
if (SP_REGNUM >= 0)
{
ULONGEST sp;
frame_unwind_unsigned_register (next_frame, SP_REGNUM, &sp);
return sp;
}
internal_error (__FILE__, __LINE__, "Missing unwind SP method");
}
int
legacy_frame_p (struct gdbarch *current_gdbarch)
{