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7a25a7c1cc
Eliminate the need for POP_FRAME. * frame.c (do_frame_unwind_register): New function. (frame_pop): When no POP_FRAME, pop the frame using register unwind and a scratch regcache. (frame_saved_regs_pop): Delete function. (trad_frame_unwinder): Update. * d10v-tdep.c (d10v_frame_pop): Delete function. (d10v_frame_unwind): Update. * sentinel-frame.c (sentinel_frame_pop): Delete function. (sentinel_frame_unwinder): Update. * dummy-frame.c (dummy_frame_pop): Delete function. (dummy_frame_unwind): Update. * frame-unwind.h (frame_unwind_pop_ftype): Delete definition. (struct frame_unwind): Update.
89 lines
3.0 KiB
C
89 lines
3.0 KiB
C
/* Definitions for a frame unwinder, for GDB, the GNU debugger.
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Copyright 2003 Free Software Foundation, Inc.
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This file is part of GDB.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place - Suite 330,
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Boston, MA 02111-1307, USA. */
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#if !defined (FRAME_UNWIND_H)
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#define FRAME_UNWIND_H 1
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struct frame_info;
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struct frame_id;
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struct frame_unwind;
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struct gdbarch;
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struct regcache;
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/* Return the frame unwind methods for the function that contains PC,
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or NULL if this this unwinder can't handle this frame. */
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typedef const struct frame_unwind *(frame_unwind_p_ftype) (CORE_ADDR pc);
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/* Add a frame unwinder to the list. The predicates are polled in the
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order that they are appended. The initial list contains the dummy
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frame's predicate. */
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extern void frame_unwind_append_predicate (struct gdbarch *gdbarch,
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frame_unwind_p_ftype *p);
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/* Iterate through the list of frame unwinders until one returns an
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implementation. */
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extern const struct frame_unwind *frame_unwind_find_by_pc (struct gdbarch
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*gdbarch,
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CORE_ADDR pc);
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/* Return the location (and possibly value) of REGNUM for the previous
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(older, up) frame. All parameters except VALUEP can be assumed to
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be non NULL. When VALUEP is NULL, just the location of the
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register should be returned.
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UNWIND_CACHE is provided as mechanism for implementing a per-frame
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local cache. It's initial value being NULL. Memory for that cache
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should be allocated using frame_obstack_zalloc().
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Register window architectures (eg SPARC) should note that REGNUM
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identifies the register for the previous frame. For instance, a
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request for the value of "o1" for the previous frame would be found
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in the register "i1" in this FRAME. */
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typedef void (frame_unwind_reg_ftype) (struct frame_info * frame,
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void **unwind_cache,
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int regnum,
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int *optimized,
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enum lval_type * lvalp,
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CORE_ADDR *addrp,
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int *realnump, void *valuep);
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/* Same as for registers above, but return the ID of the frame that
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called this one. */
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typedef void (frame_unwind_id_ftype) (struct frame_info * frame,
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void **unwind_cache,
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struct frame_id * id);
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struct frame_unwind
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{
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/* Should the frame's type go here? */
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/* Should an attribute indicating the frame's address-in-block go
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here? */
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frame_unwind_id_ftype *id;
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frame_unwind_reg_ftype *reg;
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};
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#endif
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