131 lines
4.9 KiB
C
131 lines
4.9 KiB
C
/* Traditional frame unwind support, for GDB the GNU Debugger.
|
|
|
|
Copyright (C) 2003-2020 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 3 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, see <http://www.gnu.org/licenses/>. */
|
|
|
|
#ifndef TRAD_FRAME_H
|
|
#define TRAD_FRAME_H
|
|
|
|
#include "frame.h" /* For "struct frame_id". */
|
|
|
|
struct frame_info;
|
|
struct regcache_map_entry;
|
|
struct trad_frame_cache;
|
|
|
|
/* A simple, or traditional frame cache.
|
|
|
|
The entire cache is populated in a single pass and then generic
|
|
routines are used to extract the various cache values. */
|
|
|
|
struct trad_frame_cache *trad_frame_cache_zalloc (struct frame_info *);
|
|
|
|
/* This frame's ID. */
|
|
void trad_frame_set_id (struct trad_frame_cache *this_trad_cache,
|
|
struct frame_id this_id);
|
|
void trad_frame_get_id (struct trad_frame_cache *this_trad_cache,
|
|
struct frame_id *this_id);
|
|
void trad_frame_set_this_base (struct trad_frame_cache *this_trad_cache,
|
|
CORE_ADDR this_base);
|
|
CORE_ADDR trad_frame_get_this_base (struct trad_frame_cache *this_trad_cache);
|
|
|
|
void trad_frame_set_reg_realreg (struct trad_frame_cache *this_trad_cache,
|
|
int regnum, int realreg);
|
|
void trad_frame_set_reg_addr (struct trad_frame_cache *this_trad_cache,
|
|
int regnum, CORE_ADDR addr);
|
|
void trad_frame_set_reg_regmap (struct trad_frame_cache *this_trad_cache,
|
|
const struct regcache_map_entry *regmap,
|
|
CORE_ADDR addr, size_t size);
|
|
void trad_frame_set_reg_value (struct trad_frame_cache *this_cache,
|
|
int regnum, LONGEST val);
|
|
|
|
struct value *trad_frame_get_register (struct trad_frame_cache *this_trad_cache,
|
|
struct frame_info *this_frame,
|
|
int regnum);
|
|
|
|
/* A traditional saved regs table, indexed by REGNUM, encoding where
|
|
the value of REGNUM for the previous frame can be found in this
|
|
frame.
|
|
|
|
The table is initialized with an identity encoding (ADDR == -1,
|
|
REALREG == REGNUM) indicating that the value of REGNUM in the
|
|
previous frame can be found in register REGNUM (== REALREG) in this
|
|
frame.
|
|
|
|
The initial encoding can then be changed:
|
|
|
|
Modify ADDR (REALREG >= 0, ADDR != -1) to indicate that the value
|
|
of register REGNUM in the previous frame can be found in memory at
|
|
ADDR in this frame (addr_p, !realreg_p, !value_p).
|
|
|
|
Modify REALREG (REALREG >= 0, ADDR == -1) to indicate that the
|
|
value of register REGNUM in the previous frame is found in register
|
|
REALREG in this frame (!addr_p, realreg_p, !value_p).
|
|
|
|
Call trad_frame_set_value (REALREG == -1) to indicate that the
|
|
value of register REGNUM in the previous frame is found in ADDR
|
|
(!addr_p, !realreg_p, value_p).
|
|
|
|
Call trad_frame_set_unknown (REALREG == -2) to indicate that the
|
|
register's value is not known. */
|
|
|
|
struct trad_frame_saved_reg
|
|
{
|
|
LONGEST addr; /* A CORE_ADDR fits in a longest. */
|
|
int realreg;
|
|
};
|
|
|
|
/* Encode REGNUM value in the trad-frame. */
|
|
void trad_frame_set_value (struct trad_frame_saved_reg this_saved_regs[],
|
|
int regnum, LONGEST val);
|
|
|
|
/* Encode REGNUM is in REALREG in the trad-frame. */
|
|
void trad_frame_set_realreg (struct trad_frame_saved_reg this_saved_regs[],
|
|
int regnum, int realreg);
|
|
|
|
/* Encode REGNUM is at address ADDR in the trad-frame. */
|
|
void trad_frame_set_addr (struct trad_frame_saved_reg this_trad_cache[],
|
|
int regnum, CORE_ADDR addr);
|
|
|
|
/* Mark REGNUM as unknown. */
|
|
void trad_frame_set_unknown (struct trad_frame_saved_reg this_saved_regs[],
|
|
int regnum);
|
|
|
|
/* Convenience functions, return non-zero if the register has been
|
|
encoded as specified. */
|
|
int trad_frame_value_p (struct trad_frame_saved_reg this_saved_regs[],
|
|
int regnum);
|
|
int trad_frame_addr_p (struct trad_frame_saved_reg this_saved_regs[],
|
|
int regnum);
|
|
int trad_frame_realreg_p (struct trad_frame_saved_reg this_saved_regs[],
|
|
int regnum);
|
|
|
|
/* Reset the save regs cache, setting register values to -1. */
|
|
void trad_frame_reset_saved_regs (struct gdbarch *gdbarch,
|
|
struct trad_frame_saved_reg *regs);
|
|
|
|
/* Return a freshly allocated (and initialized) trad_frame array. */
|
|
struct trad_frame_saved_reg *trad_frame_alloc_saved_regs (struct frame_info *);
|
|
struct trad_frame_saved_reg *trad_frame_alloc_saved_regs (struct gdbarch *);
|
|
|
|
/* Given the trad_frame info, return the location of the specified
|
|
register. */
|
|
struct value *trad_frame_get_prev_register (struct frame_info *this_frame,
|
|
struct trad_frame_saved_reg this_saved_regs[],
|
|
int regnum);
|
|
|
|
#endif
|