669fac235d
"struct value". * frame.c (frame_debug): Make global. (get_frame_id): Pass this frame to unwinder routines. (frame_pc_unwind): Remove unused unwind->prev_pc support. (do_frame_register_read): Do not discard the return value of frame_register_read. (frame_register_unwind): Remove debug messages. Use frame_unwind_register_value. (frame_unwind_register_value, get_frame_register_value): New functions. (create_new_frame, get_frame_base_address, get_frame_locals_address) (get_frame_args_address, get_frame_type): Pass this frame to unwinder routines. (frame_cleanup_after_sniffer, frame_prepare_for_sniffer): New functions. * frame.h: Update comments. (frame_debug, frame_unwind_register_value, get_frame_register_value) (frame_prepare_for_sniffer): Declare. * frame-unwind.h: Update comments and parameter names. (default_frame_sniffer): Declare. (frame_prev_register_ftype): Return a struct value *. (struct frame_unwind): Remove prev_pc member. (frame_unwind_sniffer_ftype, frame_unwind_append_sniffer): Delete. (frame_unwind_append_unwinder, frame_unwind_got_optimized) (frame_unwind_got_register, frame_unwind_got_memory) (frame_unwind_got_constant, frame_unwind_got_address): Declare. * frame-base.h: Update comments and parameter names. * valops.c (value_fetch_lazy): Use get_frame_register_value. Iterate if necessary. Add debugging output. * sentinel-frame.c (sentinel_frame_prev_register) (sentinel_frame_this_id): Update for new signature. (sentinel_frame_prev_pc): Delete. (sentinel_frame_unwinder): Remove prev_pc. * ia64-tdep.c (ia64_libunwind_frame_unwind): Do not initialize prev_pc. * libunwind-frame.c (libunwind_frame_unwind): Likewise. * frame-unwind.c (struct frame_unwind_table_entry): Remove sniffer. (frame_unwind_append_sniffer): Delete. (frame_unwind_append_unwinder): New function. (frame_unwind_find_by_frame): Take this frame. Only use sniffers from unwinders. Use frame_prepare_for_sniffer. (default_frame_sniffer, frame_unwind_got_optimized) (frame_unwind_got_register, frame_unwind_got_memory) (frame_unwind_got_constant, frame_unwind_got_address): New functions. * dummy-frame.c (dummy_frame_sniffer): Use gdbarch_dummy_id. (dummy_frame_prev_register, dummy_frame_this_id): Update for new signature. * gdbarch.sh: Replace unwind_dummy_id with dummy_id. * gdbarch.c, gdbarch.c: Regenerated. * frame-base.c (default_frame_base_address) (default_frame_locals_address, default_frame_args_address): Update for new signature. (frame_base_find_by_frame): Pass this frame to unwinder routines. * infcall.c (call_function_by_hand): Update comments. * Makefile.in (frame-unwind.o): Update dependencies. * gdbint.texinfo (Stack Frames): New chapter. (Algorithms): Move Frames text to the new chapter. (Target Conditionals): Delete SAVE_DUMMY_FRAME_TOS. Document gdbarch_dummy_id instead of gdbarch_unwind_dummy_id.
91 lines
3.2 KiB
C
91 lines
3.2 KiB
C
/* Definitions for a frame base, for GDB, the GNU debugger.
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Copyright (C) 2003, 2007, 2008 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 3 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, see <http://www.gnu.org/licenses/>. */
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#if !defined (FRAME_BASE_H)
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#define FRAME_BASE_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 frame_base;
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struct gdbarch;
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struct regcache;
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/* Assuming the frame chain: (outer) prev <-> this <-> next (inner);
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and that this is a `normal frame'; use THIS frame, and implicitly
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the NEXT frame's register unwind method, to determine the address
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of THIS frame's `base'.
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The exact meaning of `base' is highly dependant on the type of the
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debug info. It is assumed that dwarf2, stabs, ... will each
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provide their own methods.
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A typical implmentation will return the same value for base,
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locals-base and args-base. That value, however, will likely be
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different to the frame ID's stack address. */
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/* A generic base address. */
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typedef CORE_ADDR (frame_this_base_ftype) (struct frame_info *this_frame,
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void **this_base_cache);
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/* The base address of the frame's local variables. */
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typedef CORE_ADDR (frame_this_locals_ftype) (struct frame_info *this_frame,
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void **this_base_cache);
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/* The base address of the frame's arguments / parameters. */
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typedef CORE_ADDR (frame_this_args_ftype) (struct frame_info *this_frame,
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void **this_base_cache);
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struct frame_base
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{
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/* If non-NULL, a low-level unwinder that shares its implementation
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with this high-level frame-base method. */
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const struct frame_unwind *unwind;
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frame_this_base_ftype *this_base;
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frame_this_locals_ftype *this_locals;
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frame_this_args_ftype *this_args;
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};
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/* Given THIS frame, return the frame base methods for THIS frame,
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or NULL if it can't handle THIS frame. */
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typedef const struct frame_base *(frame_base_sniffer_ftype) (struct frame_info *this_frame);
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/* Append a frame base sniffer to the list. The sniffers are polled
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in the order that they are appended. */
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extern void frame_base_append_sniffer (struct gdbarch *gdbarch,
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frame_base_sniffer_ftype *sniffer);
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/* Set the default frame base. If all else fails, this one is
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returned. If this isn't set, the default is to use legacy code
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that uses things like the frame ID's base (ulgh!). */
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extern void frame_base_set_default (struct gdbarch *gdbarch,
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const struct frame_base *def);
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/* Iterate through the list of frame base handlers until one returns
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an implementation. */
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extern const struct frame_base *frame_base_find_by_frame (struct frame_info *this_frame);
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#endif
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