mirror of
https://github.com/darlinghq/darling-gdb.git
synced 2024-11-25 21:19:54 +00:00
36dc181bba
* inferior.h (registers_info, stepi_command, nexti_command, continue_command, interrupt_target_command): Export from infcmd.c. * frame.h (args_info, selected_frame_level_changed_hook, return_command): Export from stack.c. * v850ice.c (stepi_command, nexti_command, continue_command): use prototypes from inferior.h. * tracepoint.c (registers_info, args_info, locals_info): Use prototypes from frame.h and inferior.h. * Makefile.in (mi-main.o): Add dependency on frame.h. 2002-10-02 Elena Zannoni <ezannoni@redhat.com> * mi-main.c (mi_cmd_exec_return): Don't use return_command_wrapper, use return_command instead. (mi_cmd_exec_interrupt): Don't use interrupt_target_command_wrapper, use interrupt_target_command instead. (return_command_wrapper, interrupt_target_command_wrapper): Delete. Include frame.h. 2002-10-02 Elena Zannoni <ezannoni@redhat.com> * tui-hooks.c (selected_frame_level_changed_hook): Use the one exported from frame.h.
386 lines
15 KiB
C
386 lines
15 KiB
C
/* Definitions for dealing with stack frames, for GDB, the GNU debugger.
|
|
|
|
Copyright 1986, 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1996,
|
|
1997, 1998, 1999, 2000, 2001, 2002 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_H)
|
|
#define FRAME_H 1
|
|
|
|
/* 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_alloc().
|
|
|
|
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_register_unwind_ftype) (struct frame_info *frame,
|
|
void **unwind_cache,
|
|
int regnum,
|
|
int *optimized,
|
|
enum lval_type *lvalp,
|
|
CORE_ADDR *addrp,
|
|
int *realnump,
|
|
void *valuep);
|
|
|
|
/* Describe the saved registers of a frame. */
|
|
|
|
#if defined (EXTRA_FRAME_INFO) || defined (FRAME_FIND_SAVED_REGS)
|
|
/* XXXX - deprecated */
|
|
struct frame_saved_regs
|
|
{
|
|
/* For each register R (except the SP), regs[R] is the address at
|
|
which it was saved on entry to the frame, or zero if it was not
|
|
saved on entry to this frame. This includes special registers
|
|
such as pc and fp saved in special ways in the stack frame.
|
|
|
|
regs[SP_REGNUM] is different. It holds the actual SP, not the
|
|
address at which it was saved. */
|
|
|
|
CORE_ADDR regs[NUM_REGS];
|
|
};
|
|
#endif
|
|
|
|
/* We keep a cache of stack frames, each of which is a "struct
|
|
frame_info". The innermost one gets allocated (in
|
|
wait_for_inferior) each time the inferior stops; current_frame
|
|
points to it. Additional frames get allocated (in
|
|
get_prev_frame) as needed, and are chained through the next
|
|
and prev fields. Any time that the frame cache becomes invalid
|
|
(most notably when we execute something, but also if we change how
|
|
we interpret the frames (e.g. "set heuristic-fence-post" in
|
|
mips-tdep.c, or anything which reads new symbols)), we should call
|
|
reinit_frame_cache. */
|
|
|
|
struct frame_info
|
|
{
|
|
/* Nominal address of the frame described. See comments at FRAME_FP
|
|
about what this means outside the *FRAME* macros; in the *FRAME*
|
|
macros, it can mean whatever makes most sense for this machine. */
|
|
CORE_ADDR frame;
|
|
|
|
/* Address at which execution is occurring in this frame.
|
|
For the innermost frame, it's the current pc.
|
|
For other frames, it is a pc saved in the next frame. */
|
|
CORE_ADDR pc;
|
|
|
|
/* Level of this frame. The inner-most (youngest) frame is at
|
|
level 0. As you move towards the outer-most (oldest) frame,
|
|
the level increases. This is a cached value. It could just as
|
|
easily be computed by counting back from the selected frame to
|
|
the inner most frame. */
|
|
/* NOTE: cagney/2002-04-05: Perhaphs a level of ``-1'' should be
|
|
reserved to indicate a bogus frame - one that has been created
|
|
just to keep GDB happy (GDB always needs a frame). For the
|
|
moment leave this as speculation. */
|
|
int level;
|
|
|
|
/* Nonzero if this is a frame associated with calling a signal handler.
|
|
|
|
Set by machine-dependent code. On some machines, if
|
|
the machine-dependent code fails to check for this, the backtrace
|
|
will look relatively normal. For example, on the i386
|
|
#3 0x158728 in sighold ()
|
|
On other machines (e.g. rs6000), the machine-dependent code better
|
|
set this to prevent us from trying to print it like a normal frame. */
|
|
int signal_handler_caller;
|
|
|
|
/* For each register, address of where it was saved on entry to
|
|
the frame, or zero if it was not saved on entry to this frame.
|
|
This includes special registers such as pc and fp saved in
|
|
special ways in the stack frame. The SP_REGNUM is even more
|
|
special, the address here is the sp for the previous frame, not
|
|
the address where the sp was saved. */
|
|
/* Allocated by frame_saved_regs_zalloc () which is called /
|
|
initialized by FRAME_INIT_SAVED_REGS(). */
|
|
CORE_ADDR *saved_regs; /*NUM_REGS + NUM_PSEUDO_REGS*/
|
|
|
|
#ifdef EXTRA_FRAME_INFO
|
|
/* XXXX - deprecated */
|
|
/* Anything extra for this structure that may have been defined
|
|
in the machine dependent files. */
|
|
EXTRA_FRAME_INFO
|
|
#endif
|
|
|
|
/* Anything extra for this structure that may have been defined
|
|
in the machine dependent files. */
|
|
/* Allocated by frame_obstack_alloc () which is called /
|
|
initialized by INIT_EXTRA_FRAME_INFO */
|
|
struct frame_extra_info *extra_info;
|
|
|
|
/* If dwarf2 unwind frame informations is used, this structure holds all
|
|
related unwind data. */
|
|
struct context *context;
|
|
|
|
/* See description above. Return the register value for the
|
|
previous frame. */
|
|
frame_register_unwind_ftype *register_unwind;
|
|
void *register_unwind_cache;
|
|
|
|
/* Pointers to the next (down, inner) and previous (up, outer)
|
|
frame_info's in the frame cache. */
|
|
struct frame_info *next; /* down, inner */
|
|
struct frame_info *prev; /* up, outer */
|
|
};
|
|
|
|
/* Values for the source flag to be used in print_frame_info_base(). */
|
|
enum print_what
|
|
{
|
|
/* Print only the source line, like in stepi. */
|
|
SRC_LINE = -1,
|
|
/* Print only the location, i.e. level, address (sometimes)
|
|
function, args, file, line, line num. */
|
|
LOCATION,
|
|
/* Print both of the above. */
|
|
SRC_AND_LOC,
|
|
/* Print location only, but always include the address. */
|
|
LOC_AND_ADDRESS
|
|
};
|
|
|
|
/* Allocate additional space for appendices to a struct frame_info.
|
|
NOTE: Much of GDB's code works on the assumption that the allocated
|
|
saved_regs[] array is the size specified below. If you try to make
|
|
that array smaller, GDB will happily walk off its end. */
|
|
|
|
#ifdef SIZEOF_FRAME_SAVED_REGS
|
|
#error "SIZEOF_FRAME_SAVED_REGS can not be re-defined"
|
|
#endif
|
|
#define SIZEOF_FRAME_SAVED_REGS \
|
|
(sizeof (CORE_ADDR) * (NUM_REGS+NUM_PSEUDO_REGS))
|
|
|
|
extern void *frame_obstack_alloc (unsigned long size);
|
|
extern void frame_saved_regs_zalloc (struct frame_info *);
|
|
|
|
/* Return the frame address from FI. Except in the machine-dependent
|
|
*FRAME* macros, a frame address has no defined meaning other than
|
|
as a magic cookie which identifies a frame over calls to the
|
|
inferior. The only known exception is inferior.h
|
|
(PC_IN_CALL_DUMMY) [ON_STACK]; see comments there. You cannot
|
|
assume that a frame address contains enough information to
|
|
reconstruct the frame; if you want more than just to identify the
|
|
frame (e.g. be able to fetch variables relative to that frame),
|
|
then save the whole struct frame_info (and the next struct
|
|
frame_info, since the latter is used for fetching variables on some
|
|
machines). */
|
|
|
|
#define FRAME_FP(fi) ((fi)->frame)
|
|
|
|
/* Level of the frame: 0 for innermost, 1 for its caller, ...; or -1
|
|
for an invalid frame. */
|
|
|
|
extern int frame_relative_level (struct frame_info *fi);
|
|
|
|
/* Define a default FRAME_CHAIN_VALID, in the form that is suitable for most
|
|
targets. If FRAME_CHAIN_VALID returns zero it means that the given frame
|
|
is the outermost one and has no caller.
|
|
|
|
XXXX - both default and alternate frame_chain_valid functions are
|
|
deprecated. New code should use dummy frames and one of the
|
|
generic functions. */
|
|
|
|
extern int file_frame_chain_valid (CORE_ADDR, struct frame_info *);
|
|
extern int func_frame_chain_valid (CORE_ADDR, struct frame_info *);
|
|
extern int nonnull_frame_chain_valid (CORE_ADDR, struct frame_info *);
|
|
extern int generic_file_frame_chain_valid (CORE_ADDR, struct frame_info *);
|
|
extern int generic_func_frame_chain_valid (CORE_ADDR, struct frame_info *);
|
|
extern void generic_save_dummy_frame_tos (CORE_ADDR sp);
|
|
|
|
/* The stack frame that the user has specified for commands to act on.
|
|
Note that one cannot assume this is the address of valid data. */
|
|
|
|
extern struct frame_info *selected_frame;
|
|
|
|
/* Level of the selected frame:
|
|
0 for innermost, 1 for its caller, ...
|
|
or -1 for frame specified by address with no defined level. */
|
|
|
|
extern struct frame_info *create_new_frame (CORE_ADDR, CORE_ADDR);
|
|
|
|
extern void flush_cached_frames (void);
|
|
|
|
extern void reinit_frame_cache (void);
|
|
|
|
|
|
#ifdef FRAME_FIND_SAVED_REGS
|
|
/* XXX - deprecated */
|
|
#define FRAME_INIT_SAVED_REGS(FI) get_frame_saved_regs (FI, NULL)
|
|
extern void get_frame_saved_regs (struct frame_info *,
|
|
struct frame_saved_regs *);
|
|
#endif
|
|
|
|
extern void set_current_frame (struct frame_info *);
|
|
|
|
extern struct frame_info *get_prev_frame (struct frame_info *);
|
|
|
|
extern struct frame_info *get_current_frame (void);
|
|
|
|
extern struct frame_info *get_next_frame (struct frame_info *);
|
|
|
|
extern struct block *get_frame_block (struct frame_info *,
|
|
CORE_ADDR *addr_in_block);
|
|
|
|
extern struct block *get_current_block (CORE_ADDR *addr_in_block);
|
|
|
|
extern struct block *get_selected_block (CORE_ADDR *addr_in_block);
|
|
|
|
extern struct symbol *get_frame_function (struct frame_info *);
|
|
|
|
extern CORE_ADDR get_frame_pc (struct frame_info *);
|
|
|
|
extern CORE_ADDR frame_address_in_block (struct frame_info *);
|
|
|
|
extern CORE_ADDR get_pc_function_start (CORE_ADDR);
|
|
|
|
extern struct block *block_for_pc (CORE_ADDR);
|
|
|
|
extern struct block *block_for_pc_sect (CORE_ADDR, asection *);
|
|
|
|
extern int frameless_look_for_prologue (struct frame_info *);
|
|
|
|
extern void print_frame_args (struct symbol *, struct frame_info *,
|
|
int, struct ui_file *);
|
|
|
|
extern struct frame_info *find_relative_frame (struct frame_info *, int *);
|
|
|
|
extern void show_and_print_stack_frame (struct frame_info *fi, int level,
|
|
int source);
|
|
|
|
extern void print_stack_frame (struct frame_info *, int, int);
|
|
|
|
extern void print_only_stack_frame (struct frame_info *, int, int);
|
|
|
|
extern void show_stack_frame (struct frame_info *);
|
|
|
|
extern void select_frame (struct frame_info *);
|
|
|
|
/* Return an ID that can be used to re-find a frame. */
|
|
|
|
struct frame_id
|
|
{
|
|
/* The frame's address. This should be constant through out the
|
|
lifetime of a frame. */
|
|
CORE_ADDR base;
|
|
/* The frame's current PC. While this changes, the function that
|
|
the PC falls into, does not. */
|
|
CORE_ADDR pc;
|
|
};
|
|
|
|
extern void get_frame_id (struct frame_info *fi, struct frame_id *id);
|
|
|
|
extern struct frame_info *frame_find_by_id (struct frame_id id);
|
|
|
|
extern void print_frame_info (struct frame_info *, int, int, int);
|
|
|
|
extern void show_frame_info (struct frame_info *, int, int, int);
|
|
|
|
extern struct frame_info *block_innermost_frame (struct block *);
|
|
|
|
extern struct frame_info *find_frame_addr_in_frame_chain (CORE_ADDR);
|
|
|
|
extern CORE_ADDR sigtramp_saved_pc (struct frame_info *);
|
|
|
|
/* NOTE: cagney/2002-09-13: There is no need for this function.
|
|
Instead either of frame_unwind_signed_register() or
|
|
frame_unwind_unsigned_register() can be used. */
|
|
extern CORE_ADDR deprecated_read_register_dummy (CORE_ADDR pc,
|
|
CORE_ADDR fp, int);
|
|
extern void generic_push_dummy_frame (void);
|
|
extern void generic_pop_current_frame (void (*)(struct frame_info *));
|
|
extern void generic_pop_dummy_frame (void);
|
|
|
|
extern int generic_pc_in_call_dummy (CORE_ADDR pc,
|
|
CORE_ADDR sp, CORE_ADDR fp);
|
|
|
|
/* NOTE: cagney/2002-06-26: Targets should no longer use this
|
|
function. Instead, the contents of a dummy frames registers can be
|
|
obtained by applying: frame_register_unwind to the dummy frame; or
|
|
get_saved_register to the next outer frame. */
|
|
|
|
extern char *deprecated_generic_find_dummy_frame (CORE_ADDR pc, CORE_ADDR fp);
|
|
|
|
extern void generic_fix_call_dummy (char *dummy, CORE_ADDR pc, CORE_ADDR fun,
|
|
int nargs, struct value **args,
|
|
struct type *type, int gcc_p);
|
|
|
|
extern void generic_get_saved_register (char *, int *, CORE_ADDR *,
|
|
struct frame_info *, int,
|
|
enum lval_type *);
|
|
|
|
extern void generic_unwind_get_saved_register (char *raw_buffer,
|
|
int *optimized,
|
|
CORE_ADDR * addrp,
|
|
struct frame_info *frame,
|
|
int regnum,
|
|
enum lval_type *lval);
|
|
|
|
/* Unwind the stack frame so that the value of REGNUM, in the previous
|
|
frame is returned. If VALUEP is NULL, don't fetch/compute the
|
|
value. Instead just return the location of the value. */
|
|
|
|
extern void frame_register_unwind (struct frame_info *frame, int regnum,
|
|
int *optimizedp, enum lval_type *lvalp,
|
|
CORE_ADDR *addrp, int *realnump,
|
|
void *valuep);
|
|
|
|
/* Unwind FRAME so that the value of register REGNUM, in the previous
|
|
frame is returned. Simplified versions of frame_register_unwind. */
|
|
/* NOTE: cagney/2002-09-13: Return void as one day these functions may
|
|
be changed to return an indication that the read succeeded. */
|
|
extern void frame_unwind_signed_register (struct frame_info *frame,
|
|
int regnum, LONGEST *val);
|
|
extern void frame_unwind_unsigned_register (struct frame_info *frame,
|
|
int regnum, ULONGEST *val);
|
|
|
|
extern void generic_save_call_dummy_addr (CORE_ADDR lo, CORE_ADDR hi);
|
|
|
|
extern void get_saved_register (char *raw_buffer, int *optimized,
|
|
CORE_ADDR * addrp,
|
|
struct frame_info *frame,
|
|
int regnum, enum lval_type *lval);
|
|
|
|
/* Return the register as found on the FRAME. Return zero if the
|
|
register could not be found. */
|
|
extern int frame_register_read (struct frame_info *frame, int regnum,
|
|
void *buf);
|
|
|
|
/* Map between a frame register number and its name. A frame register
|
|
space is a superset of the cooked register space --- it also
|
|
includes builtin registers. */
|
|
|
|
extern int frame_map_name_to_regnum (const char *name, int strlen);
|
|
extern const char *frame_map_regnum_to_name (int regnum);
|
|
|
|
/* From stack.c. */
|
|
extern void args_info (char *, int);
|
|
|
|
extern void locals_info (char *, int);
|
|
|
|
extern void (*selected_frame_level_changed_hook) (int);
|
|
|
|
extern void return_command (char *, int);
|
|
|
|
#endif /* !defined (FRAME_H) */
|