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* hppa-tdep.c (init_extra_frame_info): Correctly adjust the base

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of the current frame when "fromleaf" is true.  Do not adjust the
        frame base of the innermost frame if it is a leaf function.
This commit is contained in:
Jeff Law 1993-12-26 04:06:32 +00:00
parent 068b08ebf9
commit 192c3eeb94
2 changed files with 36 additions and 10 deletions
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6
gdb/ChangeLog
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@ -1,3 +1,9 @@
Sat Dec 25 20:05:41 1993 Jeffrey A. Law (law@snake.cs.utah.edu)
* hppa-tdep.c (init_extra_frame_info): Correctly adjust the base
of the current frame when "fromleaf" is true. Do not adjust the
frame base of the innermost frame if it is a leaf function.
Sat Dec 25 13:39:21 1993 Jim Kingdon (kingdon@lioth.cygnus.com)
* stabsread.c (define_symbol): Only combine a p/r pair into a

40
gdb/hppa-tdep.c
View File

@ -497,27 +497,47 @@ init_extra_frame_info (fromleaf, frame)
int flags;
int framesize;
if (frame->next) /* Only do this for outermost frame */
if (frame->next && !fromleaf)
return;
/* If the next frame represents a frameless function invocation
then we have to do some adjustments that are normally done by
FRAME_CHAIN. (FRAME_CHAIN is not called in this case.) */
if (fromleaf)
{
/* Find the framesize of *this* frame without peeking at the PC
in the current frame structure (it isn't set yet). */
framesize = find_proc_framesize (FRAME_SAVED_PC (get_next_frame (frame)));
/* Now adjust our base frame accordingly. If we have a frame pointer
use it, else subtract the size of this frame from the current
frame. (we always want frame->frame to point at the lowest address
in the frame). */
if (framesize == -1)
frame->frame = read_register (FP_REGNUM);
else
frame->frame -= framesize;
return;
}
flags = read_register (FLAGS_REGNUM);
if (flags & 2) /* In system call? */
frame->pc = read_register (31) & ~0x3;
/* The outermost frame is always derived from PC-framesize */
/* The outermost frame is always derived from PC-framesize
One might think frameless innermost frames should have
a frame->frame that is the same as the parent's frame->frame.
That is wrong; frame->frame in that case should be the *high*
address of the parent's frame. It's complicated as hell to
explain, but the parent *always* creates some stack space for
the child. So the child actually does have a frame of some
sorts, and its base is the high address in its parent's frame. */
framesize = find_proc_framesize(frame->pc);
if (framesize == -1)
frame->frame = read_register (FP_REGNUM);
else
frame->frame = read_register (SP_REGNUM) - framesize;
if (!frameless_function_invocation (frame)) /* Frameless? */
return; /* No, quit now */
/* For frameless functions, we need to look at the caller's frame */
framesize = find_proc_framesize(FRAME_SAVED_PC(frame));
if (framesize != -1)
frame->frame -= framesize;
}
/* Given a GDB frame, determine the address of the calling function's frame.