dbe9fe588f
* frame-unwind.h (frame_unwind_pop_ftype): Declare. (struct frame_unwind): Add field pop. * frame.h (frame_pop): Declare. * frame.c (frame_saved_regs_pop): New function. (trad_frame_unwinder): Add frame_saved_regs_pop. (frame_pop): New function. * dummy-frame.c (dummy_frame_pop): New function. (discard_innermost_dummy): New function. (generic_pop_dummy_frame): Use discard_innermost_dummy. (dummy_frame_unwind): Add dummy_frame_pop. * infrun.c (normal_stop): Call frame_pop instead of POP_FRAME. * valops.c (hand_function_call): Ditto. * stack.c (return_command): Ditto.
111 lines
4 KiB
C
111 lines
4 KiB
C
/* Definitions for a frame unwinder, for GDB, the GNU debugger.
|
|
|
|
Copyright 2003 Free Software Foundation, Inc.
|
|
|
|
This file is part of GDB.
|
|
|
|
This program is free software; you can redistribute it and/or modify
|
|
it under the terms of the GNU General Public License as published by
|
|
the Free Software Foundation; either version 2 of the License, or
|
|
(at your option) any later version.
|
|
|
|
This program is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
GNU General Public License for more details.
|
|
|
|
You should have received a copy of the GNU General Public License
|
|
along with this program; if not, write to the Free Software
|
|
Foundation, Inc., 59 Temple Place - Suite 330,
|
|
Boston, MA 02111-1307, USA. */
|
|
|
|
#if !defined (FRAME_UNWIND_H)
|
|
#define FRAME_UNWIND_H 1
|
|
|
|
struct frame_info;
|
|
struct frame_id;
|
|
struct frame_unwind;
|
|
struct gdbarch;
|
|
struct regcache;
|
|
|
|
/* Return the frame unwind methods for the function that contains PC,
|
|
or NULL if this this unwinder can't handle this frame. */
|
|
|
|
typedef const struct frame_unwind *(frame_unwind_p_ftype) (CORE_ADDR pc);
|
|
|
|
/* Add a frame unwinder to the list. The predicates are polled in the
|
|
order that they are appended. The initial list contains the dummy
|
|
frame's predicate. */
|
|
|
|
extern void frame_unwind_append_predicate (struct gdbarch *gdbarch,
|
|
frame_unwind_p_ftype *p);
|
|
|
|
/* Iterate through the list of frame unwinders until one returns an
|
|
implementation. */
|
|
|
|
extern const struct frame_unwind *frame_unwind_find_by_pc (struct gdbarch
|
|
*gdbarch,
|
|
CORE_ADDR pc);
|
|
|
|
/* Return the location (and possibly value) of REGNUM for the previous
|
|
(older, up) frame. All parameters except VALUEP can be assumed to
|
|
be non NULL. When VALUEP is NULL, just the location of the
|
|
register should be returned.
|
|
|
|
UNWIND_CACHE is provided as mechanism for implementing a per-frame
|
|
local cache. It's initial value being NULL. Memory for that cache
|
|
should be allocated using frame_obstack_zalloc().
|
|
|
|
Register window architectures (eg SPARC) should note that REGNUM
|
|
identifies the register for the previous frame. For instance, a
|
|
request for the value of "o1" for the previous frame would be found
|
|
in the register "i1" in this FRAME. */
|
|
|
|
typedef void (frame_unwind_reg_ftype) (struct frame_info * frame,
|
|
void **unwind_cache,
|
|
int regnum,
|
|
int *optimized,
|
|
enum lval_type * lvalp,
|
|
CORE_ADDR *addrp,
|
|
int *realnump, void *valuep);
|
|
|
|
/* Same as for registers above, but return the address at which the
|
|
calling frame would resume. */
|
|
|
|
typedef CORE_ADDR (frame_unwind_pc_ftype) (struct frame_info * frame,
|
|
void **unwind_cache);
|
|
|
|
/* Same as for registers above, but return the ID of the frame that
|
|
called this one. */
|
|
|
|
typedef void (frame_unwind_id_ftype) (struct frame_info * frame,
|
|
void **unwind_cache,
|
|
struct frame_id * id);
|
|
|
|
/* Discard the frame by restoring the registers (in regcache) back to
|
|
that of the caller. */
|
|
/* NOTE: cagney/2003-01-19: While at present the callers all pop each
|
|
frame in turn, the implementor should try to code things so that
|
|
any frame can be popped directly. */
|
|
/* FIXME: cagney/2003-01-19: Since both FRAME and REGCACHE refer to a
|
|
common register cache, care must be taken when restoring the
|
|
registers. The `correct fix' is to first first save the registers
|
|
in a scratch cache, and second write that scratch cache back to to
|
|
the real register cache. */
|
|
|
|
typedef void (frame_unwind_pop_ftype) (struct frame_info *frame,
|
|
void **unwind_cache,
|
|
struct regcache *regcache);
|
|
|
|
struct frame_unwind
|
|
{
|
|
/* Should the frame's type go here? */
|
|
/* Should an attribute indicating the frame's address-in-block go
|
|
here? */
|
|
frame_unwind_pop_ftype *pop;
|
|
frame_unwind_pc_ftype *pc;
|
|
frame_unwind_id_ftype *id;
|
|
frame_unwind_reg_ftype *reg;
|
|
};
|
|
|
|
#endif
|