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2002-11-15 Andrew Cagney <ac131313@redhat.com>

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* frame.c (frame_pc_unwind): New function.
	(frame_saved_regs_pc_unwind): New function.
	(frame_register_unwind): Pass unwind_cache instead of
	register_unwind_cache.
	(set_unwind_by_pc): Add unwind_pc parameter, set.
	(create_new_frame): Pass frame->pc_unwind to set_unwind_by_pc.
	(get_prev_frame): Ditto.
	* frame.h (frame_pc_unwind_ftype): Declare.
	(struct frame_info): Add pc_unwind, pc_unwind_cache_p and
	pc_unwind_cache.  Rename register_unwind_cache to unwind_cache.
	(frame_pc_unwind): Declare.
	* dummy-frame.c (dummy_frame_pc_unwind): New function.
	(struct dummy_frame): Add comment mentioning that values are for
	previous frame.
	* dummy-frame.h (dummy_frame_pc_unwind): Declare.
	* blockframe.c (file_frame_chain_valid): Use frame_pc_unwind.
	(generic_file_frame_chain_valid): Ditto.
	* stack.c (frame_info): Ditto.
This commit is contained in:
Andrew Cagney
2002-11-15 22:16:25 +00:00
parent d9285969ae
commit f18c5a7303
7 changed files with 109 additions and 18 deletions
Download Patch File Download Diff File Expand all files Collapse all files

51
gdb/frame.c
View File

@ -84,6 +84,17 @@ frame_find_by_id (struct frame_id id)
return NULL;
}
CORE_ADDR
frame_pc_unwind (struct frame_info *frame)
{
if (!frame->pc_unwind_cache_p)
{
frame->pc_unwind_cache = frame->pc_unwind (frame, &frame->unwind_cache);
frame->pc_unwind_cache_p = 1;
}
return frame->pc_unwind_cache;
}
void
frame_register_unwind (struct frame_info *frame, int regnum,
int *optimizedp, enum lval_type *lvalp,
@ -124,7 +135,7 @@ frame_register_unwind (struct frame_info *frame, int regnum,
}
/* Ask this frame to unwind its register. */
frame->register_unwind (frame, &frame->register_unwind_cache, regnum,
frame->register_unwind (frame, &frame->unwind_cache, regnum,
optimizedp, lvalp, addrp, realnump, bufferp);
}
@ -524,6 +535,12 @@ frame_saved_regs_register_unwind (struct frame_info *frame, void **cache,
}
}
static CORE_ADDR
frame_saved_regs_pc_unwind (struct frame_info *frame, void **cache)
{
return FRAME_SAVED_PC (frame);
}
/* Function: get_saved_register
Find register number REGNUM relative to FRAME and put its (raw,
target format) contents in *RAW_BUFFER.
@ -627,18 +644,28 @@ deprecated_generic_get_saved_register (char *raw_buffer, int *optimized,
static void
set_unwind_by_pc (CORE_ADDR pc, CORE_ADDR fp,
frame_register_unwind_ftype **unwind)
frame_register_unwind_ftype **unwind_register,
frame_pc_unwind_ftype **unwind_pc)
{
if (!USE_GENERIC_DUMMY_FRAMES)
/* Still need to set this to something. The ``info frame'' code
calls this function to find out where the saved registers are.
Hopefully this is robust enough to stop any core dumps and
return vaguely correct values.. */
*unwind = frame_saved_regs_register_unwind;
{
/* Still need to set this to something. The ``info frame'' code
calls this function to find out where the saved registers are.
Hopefully this is robust enough to stop any core dumps and
return vaguely correct values.. */
*unwind_register = frame_saved_regs_register_unwind;
*unwind_pc = frame_saved_regs_pc_unwind;
}
else if (PC_IN_CALL_DUMMY (pc, fp, fp))
*unwind = dummy_frame_register_unwind;
{
*unwind_register = dummy_frame_register_unwind;
*unwind_pc = dummy_frame_pc_unwind;
}
else
*unwind = frame_saved_regs_register_unwind;
{
*unwind_register = frame_saved_regs_register_unwind;
*unwind_pc = frame_saved_regs_pc_unwind;
}
}
/* Create an arbitrary (i.e. address specified by user) or innermost frame.
@ -666,7 +693,8 @@ create_new_frame (CORE_ADDR addr, CORE_ADDR pc)
INIT_EXTRA_FRAME_INFO (0, fi);
/* Select/initialize an unwind function. */
set_unwind_by_pc (fi->pc, fi->frame, &fi->register_unwind);
set_unwind_by_pc (fi->pc, fi->frame, &fi->register_unwind,
&fi->pc_unwind);
return fi;
}
@ -913,7 +941,8 @@ get_prev_frame (struct frame_info *next_frame)
(and probably other architectural information). The PC lets you
check things like the debug info at that point (dwarf2cfi?) and
use that to decide how the frame should be unwound. */
set_unwind_by_pc (prev->pc, prev->frame, &prev->register_unwind);
set_unwind_by_pc (prev->pc, prev->frame, &prev->register_unwind,
&prev->pc_unwind);
find_pc_partial_function (prev->pc, &name,
(CORE_ADDR *) NULL, (CORE_ADDR *) NULL);