/* 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.
+ 1997, 1998, 1999, 2000, 2001, 2002, 2003 Free Software Foundation, Inc.
This file is part of GDB.
#define FRAME_H 1
struct symtab_and_line;
+struct frame_unwind;
+struct frame_base;
+struct block;
+struct gdbarch;
+struct ui_file;
+
+/* A legacy unwinder to prop up architectures using the old style
+ saved regs array. */
+extern const struct frame_unwind *legacy_saved_regs_unwind;
/* The frame object. */
struct frame_id
{
- /* The frame's address. This should be constant through out the
- lifetime of a frame. */
+ /* The frame's stack address. This shall be constant through out
+ the lifetime of a frame. Note that this requirement applies to
+ not just the function body, but also the prologue and (in theory
+ at least) the epilogue. Since that value needs to fall either on
+ the boundary, or within the frame's address range, the frame's
+ outer-most address (the inner-most address of the previous frame)
+ is used. Watch out for all the legacy targets that still use the
+ function pointer register or stack pointer register. They are
+ wrong. */
/* NOTE: cagney/2002-11-16: The ia64 has two stacks and hence two
frame bases. This will need to be expanded to accomodate that. */
- CORE_ADDR base;
- /* The frame's current PC. While the PC within the function may
- change, the function that contains the PC does not. Should this
- instead be the frame's function? */
- CORE_ADDR pc;
+ CORE_ADDR stack_addr;
+ /* The frame's code address. This shall be constant through out the
+ lifetime of the frame. While the PC (a.k.a. resume address)
+ changes as the function is executed, this code address cannot.
+ Typically, it is set to the address of the entry point of the
+ frame's function (as returned by frame_func_unwind(). */
+ CORE_ADDR code_addr;
};
/* Methods for constructing and comparing Frame IDs.
/* For convenience. All fields are zero. */
extern const struct frame_id null_frame_id;
-/* Construct a frame ID. The second parameter isn't yet well defined.
- It might be the containing function, or the resume PC (see comment
- above in `struct frame_id')? A func/pc of zero indicates a
- wildcard (i.e., do not use func in frame ID comparisons). */
-extern struct frame_id frame_id_build (CORE_ADDR base,
- CORE_ADDR func_or_pc);
+/* Construct a frame ID. The first parameter is the frame's constant
+ stack address (typically the outer-bound), and the second the
+ frame's constant code address (typically the entry point) (or zero,
+ to indicate a wild card). */
+extern struct frame_id frame_id_build (CORE_ADDR stack_addr,
+ CORE_ADDR code_addr);
/* Returns non-zero when L is a valid frame (a valid frame has a
non-zero .base). */
above about frameless functions. */
extern int frame_id_inner (struct frame_id l, struct frame_id r);
+/* Write the internal representation of a frame ID on the specified
+ stream. */
+extern void fprint_frame_id (struct ui_file *file, struct frame_id id);
+
/* For every stopped thread, GDB tracks two frames: current and
selected. Current frame is the inner most frame of the selected
/* Base attributes of a frame: */
/* The frame's `resume' address. Where the program will resume in
- this frame. */
+ this frame.
+
+ This replaced: frame->pc; */
extern CORE_ADDR get_frame_pc (struct frame_info *);
+/* Following on from the `resume' address. Return the entry point
+ address of the function containing that resume address, or zero if
+ that function isn't known. */
+extern CORE_ADDR frame_func_unwind (struct frame_info *fi);
+extern CORE_ADDR get_frame_func (struct frame_info *fi);
+
/* Closely related to the resume address, various symbol table
attributes that are determined by the PC. Note that for a normal
frame, the PC refers to the resume address after the return, and
extern void find_frame_sal (struct frame_info *frame,
struct symtab_and_line *sal);
-/* 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 (um, SEE NOTE BELOW). The only known exception is
- inferior.h (DEPRECATED_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) (um, again SEE NOTE BELOW).
-
- NOTE: cagney/2002-11-18: Actually, the frame address isn't
- sufficient for identifying a frame, and the counter examples are
- wrong!
-
- Code that needs to (re)identify a frame must use get_frame_id() and
- frame_find_by_id() (and in the future, a frame_compare() function
- instead of INNER_THAN()). Two reasons: an architecture (e.g.,
- ia64) can have more than one frame address (due to multiple stack
- pointers) (frame ID is going to be expanded to accomodate this);
- successive frameless function calls can only be differientated by
- comparing both the frame's base and the frame's enclosing function
- (frame_find_by_id() is going to be modified to perform this test).
-
- The generic dummy frame version of DEPRECATED_PC_IN_CALL_DUMMY() is
- able to identify a dummy frame using only the PC value. So the
- frame address is not needed. In fact, most
- DEPRECATED_PC_IN_CALL_DUMMY() calls now pass zero as the frame/sp
- values as the caller knows that those values won't be used. Once
- all architectures are using generic dummy frames,
- DEPRECATED_PC_IN_CALL_DUMMY() can drop the sp/frame parameters.
- When it comes to finding a dummy frame, the next frame's frame ID
- (with out duing an unwind) can be used (ok, could if it wasn't for
- the need to change the way the PPC defined frame base in a strange
- way).
-
- Modern architectures should be using something like dwarf2's
- location expression to describe where a variable lives. Such
- expressions specify their own debug info centric frame address.
- Consequently, a generic frame address is pretty meaningless. */
+/* Return the frame base (what ever that is) (DEPRECATED).
+
+ Old code was trying to use this single method for two conflicting
+ purposes. Such code needs to be updated to use either of:
+
+ get_frame_id: A low level frame unique identifier, that consists of
+ both a stack and a function address, that can be used to uniquely
+ identify a frame. This value is determined by the frame's
+ low-level unwinder, the stack part [typically] being the
+ top-of-stack of the previous frame, and the function part being the
+ function's start address. Since the correct identification of a
+ frameless function requires both the a stack and function address,
+ the old get_frame_base method was not sufficient.
+
+ get_frame_base_address: get_frame_locals_address:
+ get_frame_args_address: A set of high-level debug-info dependant
+ addresses that fall within the frame. These addresses almost
+ certainly will not match the stack address part of a frame ID (as
+ returned by get_frame_base).
+
+ This replaced: frame->frame; */
extern CORE_ADDR get_frame_base (struct frame_info *);
FI is NULL, return the null_frame_id. */
extern struct frame_id get_frame_id (struct frame_info *fi);
+/* Assuming that a frame is `normal', return its base-address, or 0 if
+ the information isn't available. NOTE: This address is really only
+ meaningful to the frame's high-level debug info. */
+extern CORE_ADDR get_frame_base_address (struct frame_info *);
+
+/* Assuming that a frame is `normal', return the base-address of the
+ local variables, or 0 if the information isn't available. NOTE:
+ This address is really only meaningful to the frame's high-level
+ debug info. Typically, the argument and locals share a single
+ base-address. */
+extern CORE_ADDR get_frame_locals_address (struct frame_info *);
+
+/* Assuming that a frame is `normal', return the base-address of the
+ parameter list, or 0 if that information isn't available. NOTE:
+ This address is really only meaningful to the frame's high-level
+ debug info. Typically, the argument and locals share a single
+ base-address. */
+extern CORE_ADDR get_frame_args_address (struct frame_info *);
+
/* The frame's level: 0 for innermost, 1 for its caller, ...; or -1
for an invalid frame). */
extern int frame_relative_level (struct frame_info *fi);
enum frame_type
{
+ /* The frame's type hasn't yet been defined. This is a catch-all
+ for legacy code that uses really strange technicques, such as
+ deprecated_set_frame_type, to set the frame's type. New code
+ should not use this value. */
+ UNKNOWN_FRAME,
/* A true stack frame, created by the target program during normal
execution. */
NORMAL_FRAME,
PC_IN_SIGTRAMP() indicates a SIGTRAMP_FRAME and
DEPRECATED_PC_IN_CALL_DUMMY() indicates a DUMMY_FRAME. I suspect
the real problem here is that get_prev_frame() only sets
- initialized after INIT_EXTRA_FRAME_INFO as been called.
+ initialized after DEPRECATED_INIT_EXTRA_FRAME_INFO as been called.
Consequently, some targets found that the frame's type was wrong
and tried to fix it. The correct fix is to modify get_prev_frame()
so that it initializes the frame's type before calling any other
/* 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_register (struct frame_info *frame,
+ int regnum, void *buf);
+
extern void frame_unwind_signed_register (struct frame_info *frame,
int regnum, LONGEST *val);
/* 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_read_register (struct frame_info *frame, int regnum,
+ void *buf);
+
extern void frame_read_signed_register (struct frame_info *frame,
int regnum, LONGEST *val);
/* 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. */
+ includes builtin registers. If NAMELEN is negative, use the NAME's
+ length when doing the comparison. */
-extern int frame_map_name_to_regnum (const char *name, int strlen);
+extern int frame_map_name_to_regnum (const char *name, int namelen);
extern const char *frame_map_regnum_to_name (int regnum);
/* Unwind the PC. Strictly speaking return the resume address of the
extern CORE_ADDR frame_pc_unwind (struct frame_info *frame);
-/* Unwind the frame ID. Return an ID that uniquely identifies the
- caller's frame. */
-extern struct frame_id frame_id_unwind (struct frame_info *frame);
-
-\f
-/* 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);
-
-/* Same as for registers above, but return the address at which the
- calling frame would resume. */
-
-typedef CORE_ADDR (frame_pc_unwind_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 struct frame_info (frame_id_unwind_ftype) (struct frame_info *frame,
- void **unwind_cache);
-
-/* 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
- get_frame_base() 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;
-
- /* The frame's type. */
- enum frame_type type;
-
- /* 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;
-
- /* Unwind cache shared between the unwind functions - they had
- better all agree as to the contents. */
- void *unwind_cache;
-
- /* See description above. The previous frame's registers. */
- frame_register_unwind_ftype *register_unwind;
-
- /* See description above. The previous frame's resume address.
- Save the previous PC in a local cache. */
- frame_pc_unwind_ftype *pc_unwind;
- int pc_unwind_cache_p;
- CORE_ADDR pc_unwind_cache;
-
- /* See description above. The previous frame's resume address.
- Save the previous PC in a local cache. */
- frame_id_unwind_ftype *id_unwind;
- int id_unwind_cache_p;
- struct frame_id id_unwind_cache;
-
- /* Pointers to the next (down, inner, younger) and previous (up,
- outer, older) frame_info's in the frame cache. */
- struct frame_info *next; /* down, inner, younger */
- int prev_p;
- struct frame_info *prev; /* up, outer, older */
- };
+/* Discard the specified frame. Restoring the registers to the state
+ of the caller. */
+extern void frame_pop (struct frame_info *frame);
/* Values for the source flag to be used in print_frame_info_base(). */
enum print_what
#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 *);
+/* Allocate zero initialized memory from the frame cache obstack.
+ Appendices to the frame info (such as the unwind cache) should
+ allocate memory using this method. */
-/* 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);
+extern void *frame_obstack_zalloc (unsigned long size);
+#define FRAME_OBSTACK_ZALLOC(TYPE) ((TYPE *) frame_obstack_zalloc (sizeof (TYPE)))
+#define FRAME_OBSTACK_CALLOC(NUMBER,TYPE) ((TYPE *) frame_obstack_zalloc ((NUMBER) * sizeof (TYPE)))
+/* If legacy_frame_chain_valid() returns zero it means that the given
+ frame is the outermost one and has no caller.
+ This method has been superseeded by the per-architecture
+ frame_unwind_pc() (returns 0 to indicate an invalid return address)
+ and per-frame this_id() (returns a NULL frame ID to indicate an
+ invalid frame). */
+extern int legacy_frame_chain_valid (CORE_ADDR, struct frame_info *);
-#ifdef FRAME_FIND_SAVED_REGS
-/* XXX - deprecated */
-#define FRAME_INIT_SAVED_REGS(FI) deprecated_get_frame_saved_regs (FI, NULL)
-extern void deprecated_get_frame_saved_regs (struct frame_info *,
- struct frame_saved_regs *);
-#endif
+extern void generic_save_dummy_frame_tos (CORE_ADDR sp);
extern struct block *get_frame_block (struct frame_info *,
CORE_ADDR *addr_in_block);
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 *,
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 print_frame_info (struct frame_info *, int, int, int);
/* 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. */
+ frame_register_unwind() 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);
+void generic_unwind_get_saved_register (char *raw_buffer,
+ int *optimizedp,
+ CORE_ADDR *addrp,
+ struct frame_info *frame,
+ int regnum,
+ enum lval_type *lvalp);
/* The function generic_get_saved_register() has been made obsolete.
- GET_SAVED_REGISTER now defaults to the recursive equivalent -
- generic_unwind_get_saved_register() - so there is no need to even
- set GET_SAVED_REGISTER. Architectures that need to override the
- register unwind mechanism should modify frame->unwind(). */
+ DEPRECATED_GET_SAVED_REGISTER now defaults to the recursive
+ equivalent - generic_unwind_get_saved_register() - so there is no
+ need to even set DEPRECATED_GET_SAVED_REGISTER. Architectures that
+ need to override the register unwind mechanism should modify
+ frame->unwind(). */
extern void deprecated_generic_get_saved_register (char *, int *, CORE_ADDR *,
struct frame_info *, int,
enum lval_type *);
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);
+/* FIXME: cagney/2003-02-02: Should be deprecated or replaced with a
+ function called frame_read_register_p(). This slightly weird (and
+ older) variant of frame_read_register() returns zero (indicating
+ the register is unavailable) if either: the register isn't cached;
+ or the register has been optimized out. Problem is, neither check
+ is exactly correct. A register can't be optimized out (it may not
+ have been saved as part of a function call); The fact that a
+ register isn't in the register cache doesn't mean that the register
+ isn't available (it could have been fetched from memory). */
extern int frame_register_read (struct frame_info *frame, int regnum,
void *buf);
long size);
extern struct frame_extra_info *get_frame_extra_info (struct frame_info *fi);
+/* Create/access the frame's `saved_regs'. The saved regs are used by
+ older code to store the address of each register (except for
+ SP_REGNUM where the value of the register in the previous frame is
+ stored). */
+extern CORE_ADDR *frame_saved_regs_zalloc (struct frame_info *);
+extern CORE_ADDR *get_frame_saved_regs (struct frame_info *);
+
+/* FIXME: cagney/2002-12-06: Has the PC in the current frame changed?
+ "infrun.c", Thanks to DECR_PC_AFTER_BREAK, can change the PC after
+ the initial frame create. This puts things back in sync.
+
+ This replaced: frame->pc = ....; */
+extern void deprecated_update_frame_pc_hack (struct frame_info *frame,
+ CORE_ADDR pc);
+
+/* FIXME: cagney/2002-12-18: Has the frame's base changed? Or to be
+ more exact, whas that initial guess at the frame's base as returned
+ by deprecated_read_fp() wrong. If it was, fix it. This shouldn't
+ be necessary since the code should be getting the frame's base
+ correct from the outset.
+
+ This replaced: frame->frame = ....; */
+extern void deprecated_update_frame_base_hack (struct frame_info *frame,
+ CORE_ADDR base);
+
+/* FIXME: cagney/2003-01-04: Explicitly set the frame's saved_regs
+ and/or extra_info. Target code is allocating a fake frame and than
+ initializing that to get around the problem of, when creating the
+ inner most frame, there is no where to cache information such as
+ the prologue analysis. This is fixed by the new unwind mechanism -
+ even the inner most frame has somewhere to store things like the
+ prolog analysis (or at least will once the frame overhaul is
+ finished). */
+extern void deprecated_set_frame_saved_regs_hack (struct frame_info *frame,
+ CORE_ADDR *saved_regs);
+extern void deprecated_set_frame_extra_info_hack (struct frame_info *frame,
+ struct frame_extra_info *extra_info);
+
+/* FIXME: cagney/2003-01-04: Allocate a frame from the heap (rather
+ than the frame obstack). Targets do this as a way of saving the
+ prologue analysis from the inner most frame before that frame has
+ been created. By always creating a frame, this problem goes away. */
+extern struct frame_info *deprecated_frame_xmalloc (void);
+
+/* FIXME: cagney/2003-01-05: Allocate a frame, along with the
+ saved_regs and extra_info. Set up cleanups for all three. Same as
+ for deprecated_frame_xmalloc, targets are calling this when
+ creating a scratch `struct frame_info'. The frame overhaul makes
+ this unnecessary since all frame queries are parameterized with a
+ common cache parameter and a frame. */
+extern struct frame_info *deprecated_frame_xmalloc_with_cleanup (long sizeof_saved_regs,
+ long sizeof_extra_info);
+
+/* FIXME: cagney/2003-01-07: These are just nasty. Code shouldn't be
+ doing this. I suspect it dates back to the days when every field
+ of an allocated structure was explicitly initialized. */
+extern void deprecated_set_frame_next_hack (struct frame_info *fi,
+ struct frame_info *next);
+extern void deprecated_set_frame_prev_hack (struct frame_info *fi,
+ struct frame_info *prev);
+
+/* FIXME: cagney/2003-01-07: Instead of the dwarf2cfi having its own
+ dedicated `struct frame_info . context' field, the code should use
+ the per frame `unwind_cache' that is passed to the
+ frame_pc_unwind(), frame_register_unwind() and frame_id_unwind()
+ methods.
+
+ See "dummy-frame.c" for an example of how a cfi-frame object can be
+ implemented using this. */
+extern struct context *deprecated_get_frame_context (struct frame_info *fi);
+extern void deprecated_set_frame_context (struct frame_info *fi,
+ struct context *context);
+
+/* Return non-zero if the architecture is relying on legacy frame
+ code. */
+extern int legacy_frame_p (struct gdbarch *gdbarch);
+
#endif /* !defined (FRAME_H) */
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