/* Interface between GDB and target environments, including files and processes
- Copyright 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999,
- 2000, 2001, 2002 Free Software Foundation, Inc.
+
+ Copyright (C) 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999,
+ 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007
+ Free Software Foundation, Inc.
+
Contributed by Cygnus Support. Written by John Gilmore.
This file is part of GDB.
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. */
+ Foundation, Inc., 51 Franklin Street, Fifth Floor,
+ Boston, MA 02110-1301, USA. */
#if !defined (TARGET_H)
#define TARGET_H
+struct objfile;
+struct ui_file;
+struct mem_attrib;
+struct target_ops;
+struct bp_target_info;
+struct regcache;
+
/* This include file defines the interface between the main part
of the debugger, and the part which is target-specific, or
specific to the communications interface between us and the
target.
- A TARGET is an interface between the debugger and a particular
- kind of file or process. Targets can be STACKED in STRATA,
+ A TARGET is an interface between the debugger and a particular
+ kind of file or process. Targets can be STACKED in STRATA,
so that more than one target can potentially respond to a request.
In particular, memory accesses will walk down the stack of targets
until they find a target that is interested in handling that particular
#include "symtab.h"
#include "dcache.h"
#include "memattr.h"
+#include "vec.h"
enum strata
{
INF_QUIT_REQ,
/* Process a normal inferior event which will result in target_wait
being called. */
- INF_REG_EVENT,
+ INF_REG_EVENT,
/* Deal with an error on the inferior. */
INF_ERROR,
/* We are called because a timer went off. */
/* Given a name (SIGHUP, etc.), return its signal. */
enum target_signal target_signal_from_name (char *);
\f
+/* Target objects which can be transfered using target_read,
+ target_write, et cetera. */
+
+enum target_object
+{
+ /* AVR target specific transfer. See "avr-tdep.c" and "remote.c". */
+ TARGET_OBJECT_AVR,
+ /* Transfer up-to LEN bytes of memory starting at OFFSET. */
+ TARGET_OBJECT_MEMORY,
+ /* Memory, avoiding GDB's data cache and trusting the executable.
+ Target implementations of to_xfer_partial never need to handle
+ this object, and most callers should not use it. */
+ TARGET_OBJECT_RAW_MEMORY,
+ /* Kernel Unwind Table. See "ia64-tdep.c". */
+ TARGET_OBJECT_UNWIND_TABLE,
+ /* Transfer auxilliary vector. */
+ TARGET_OBJECT_AUXV,
+ /* StackGhost cookie. See "sparc-tdep.c". */
+ TARGET_OBJECT_WCOOKIE,
+ /* Target memory map in XML format. */
+ TARGET_OBJECT_MEMORY_MAP,
+ /* Flash memory. This object can be used to write contents to
+ a previously erased flash memory. Using it without erasing
+ flash can have unexpected results. Addresses are physical
+ address on target, and not relative to flash start. */
+ TARGET_OBJECT_FLASH,
+ /* Available target-specific features, e.g. registers and coprocessors.
+ See "target-descriptions.c". ANNEX should never be empty. */
+ TARGET_OBJECT_AVAILABLE_FEATURES
+ /* Possible future objects: TARGET_OBJECT_FILE, TARGET_OBJECT_PROC, ... */
+};
+
+/* Request that OPS transfer up to LEN 8-bit bytes of the target's
+ OBJECT. The OFFSET, for a seekable object, specifies the
+ starting point. The ANNEX can be used to provide additional
+ data-specific information to the target.
+
+ Return the number of bytes actually transfered, or -1 if the
+ transfer is not supported or otherwise fails. Return of a positive
+ value less than LEN indicates that no further transfer is possible.
+ Unlike the raw to_xfer_partial interface, callers of these
+ functions do not need to retry partial transfers. */
+
+extern LONGEST target_read (struct target_ops *ops,
+ enum target_object object,
+ const char *annex, gdb_byte *buf,
+ ULONGEST offset, LONGEST len);
+
+extern LONGEST target_write (struct target_ops *ops,
+ enum target_object object,
+ const char *annex, const gdb_byte *buf,
+ ULONGEST offset, LONGEST len);
+
+/* Similar to target_write, except that it also calls PROGRESS with
+ the number of bytes written and the opaque BATON after every
+ successful partial write (and before the first write). This is
+ useful for progress reporting and user interaction while writing
+ data. To abort the transfer, the progress callback can throw an
+ exception. */
+
+LONGEST target_write_with_progress (struct target_ops *ops,
+ enum target_object object,
+ const char *annex, const gdb_byte *buf,
+ ULONGEST offset, LONGEST len,
+ void (*progress) (ULONGEST, void *),
+ void *baton);
+
+/* Wrapper to perform a full read of unknown size. OBJECT/ANNEX will
+ be read using OPS. The return value will be -1 if the transfer
+ fails or is not supported; 0 if the object is empty; or the length
+ of the object otherwise. If a positive value is returned, a
+ sufficiently large buffer will be allocated using xmalloc and
+ returned in *BUF_P containing the contents of the object.
+
+ This method should be used for objects sufficiently small to store
+ in a single xmalloc'd buffer, when no fixed bound on the object's
+ size is known in advance. Don't try to read TARGET_OBJECT_MEMORY
+ through this function. */
+
+extern LONGEST target_read_alloc (struct target_ops *ops,
+ enum target_object object,
+ const char *annex, gdb_byte **buf_p);
+
+/* Read OBJECT/ANNEX using OPS. The result is NUL-terminated and
+ returned as a string, allocated using xmalloc. If an error occurs
+ or the transfer is unsupported, NULL is returned. Empty objects
+ are returned as allocated but empty strings. A warning is issued
+ if the result contains any embedded NUL bytes. */
+
+extern char *target_read_stralloc (struct target_ops *ops,
+ enum target_object object,
+ const char *annex);
+
+/* Wrappers to target read/write that perform memory transfers. They
+ throw an error if the memory transfer fails.
+
+ NOTE: cagney/2003-10-23: The naming schema is lifted from
+ "frame.h". The parameter order is lifted from get_frame_memory,
+ which in turn lifted it from read_memory. */
+
+extern void get_target_memory (struct target_ops *ops, CORE_ADDR addr,
+ gdb_byte *buf, LONGEST len);
+extern ULONGEST get_target_memory_unsigned (struct target_ops *ops,
+ CORE_ADDR addr, int len);
+\f
/* If certain kinds of activity happen, target_wait should perform
callbacks. */
struct target_ops
{
+ struct target_ops *beneath; /* To the target under this one. */
char *to_shortname; /* Name this target type */
char *to_longname; /* Name for printing */
char *to_doc; /* Documentation. Does not include trailing
newline, and starts with a one-line descrip-
tion (probably similar to to_longname). */
+ /* Per-target scratch pad. */
+ void *to_data;
+ /* The open routine takes the rest of the parameters from the
+ command, and (if successful) pushes a new target onto the
+ stack. Targets should supply this routine, if only to provide
+ an error message. */
void (*to_open) (char *, int);
+ /* Old targets with a static target vector provide "to_close".
+ New re-entrant targets provide "to_xclose" and that is expected
+ to xfree everything (including the "struct target_ops"). */
+ void (*to_xclose) (struct target_ops *targ, int quitting);
void (*to_close) (int);
void (*to_attach) (char *, int);
void (*to_post_attach) (int);
- void (*to_require_attach) (char *, int);
void (*to_detach) (char *, int);
- void (*to_require_detach) (int, char *, int);
+ void (*to_disconnect) (struct target_ops *, char *, int);
void (*to_resume) (ptid_t, int, enum target_signal);
ptid_t (*to_wait) (ptid_t, struct target_waitstatus *);
- void (*to_post_wait) (ptid_t, int);
- void (*to_fetch_registers) (int);
- void (*to_store_registers) (int);
+ void (*to_fetch_registers) (struct regcache *, int);
+ void (*to_store_registers) (struct regcache *, int);
void (*to_prepare_to_store) (void);
/* Transfer LEN bytes of memory between GDB address MYADDR and
negative (call its absolute value N) means that we cannot
transfer right at MEMADDR, but we could transfer at least
- something at MEMADDR + N. */
-
- int (*to_xfer_memory) (CORE_ADDR memaddr, char *myaddr,
- int len, int write,
- struct mem_attrib *attrib,
- struct target_ops *target);
-
-#if 0
- /* Enable this after 4.12. */
+ something at MEMADDR + N.
- /* Search target memory. Start at STARTADDR and take LEN bytes of
- target memory, and them with MASK, and compare to DATA. If they
- match, set *ADDR_FOUND to the address we found it at, store the data
- we found at LEN bytes starting at DATA_FOUND, and return. If
- not, add INCREMENT to the search address and keep trying until
- the search address is outside of the range [LORANGE,HIRANGE).
+ NOTE: cagney/2004-10-01: This has been entirely superseeded by
+ to_xfer_partial and inferior inheritance. */
- If we don't find anything, set *ADDR_FOUND to (CORE_ADDR)0 and
- return. */
-
- void (*to_search) (int len, char *data, char *mask,
- CORE_ADDR startaddr, int increment,
- CORE_ADDR lorange, CORE_ADDR hirange,
- CORE_ADDR * addr_found, char *data_found);
-
-#define target_search(len, data, mask, startaddr, increment, lorange, hirange, addr_found, data_found) \
- (*current_target.to_search) (len, data, mask, startaddr, increment, \
- lorange, hirange, addr_found, data_found)
-#endif /* 0 */
+ int (*deprecated_xfer_memory) (CORE_ADDR memaddr, gdb_byte *myaddr,
+ int len, int write,
+ struct mem_attrib *attrib,
+ struct target_ops *target);
void (*to_files_info) (struct target_ops *);
- int (*to_insert_breakpoint) (CORE_ADDR, char *);
- int (*to_remove_breakpoint) (CORE_ADDR, char *);
+ int (*to_insert_breakpoint) (struct bp_target_info *);
+ int (*to_remove_breakpoint) (struct bp_target_info *);
int (*to_can_use_hw_breakpoint) (int, int, int);
- int (*to_insert_hw_breakpoint) (CORE_ADDR, char *);
- int (*to_remove_hw_breakpoint) (CORE_ADDR, char *);
+ int (*to_insert_hw_breakpoint) (struct bp_target_info *);
+ int (*to_remove_hw_breakpoint) (struct bp_target_info *);
int (*to_remove_watchpoint) (CORE_ADDR, int, int);
int (*to_insert_watchpoint) (CORE_ADDR, int, int);
int (*to_stopped_by_watchpoint) (void);
- CORE_ADDR (*to_stopped_data_address) (void);
- int (*to_region_size_ok_for_hw_watchpoint) (int);
+ int to_have_steppable_watchpoint;
+ int to_have_continuable_watchpoint;
+ int (*to_stopped_data_address) (struct target_ops *, CORE_ADDR *);
+ int (*to_region_ok_for_hw_watchpoint) (CORE_ADDR, int);
void (*to_terminal_init) (void);
void (*to_terminal_inferior) (void);
void (*to_terminal_ours_for_output) (void);
void (*to_kill) (void);
void (*to_load) (char *, int);
int (*to_lookup_symbol) (char *, CORE_ADDR *);
- void (*to_create_inferior) (char *, char *, char **);
+ void (*to_create_inferior) (char *, char *, char **, int);
void (*to_post_startup_inferior) (ptid_t);
void (*to_acknowledge_created_inferior) (int);
- int (*to_insert_fork_catchpoint) (int);
+ void (*to_insert_fork_catchpoint) (int);
int (*to_remove_fork_catchpoint) (int);
- int (*to_insert_vfork_catchpoint) (int);
+ void (*to_insert_vfork_catchpoint) (int);
int (*to_remove_vfork_catchpoint) (int);
- int (*to_follow_fork) (int);
- int (*to_insert_exec_catchpoint) (int);
+ int (*to_follow_fork) (struct target_ops *, int);
+ void (*to_insert_exec_catchpoint) (int);
int (*to_remove_exec_catchpoint) (int);
int (*to_reported_exec_events_per_exec_call) (void);
int (*to_has_exited) (int, int, int *);
char *(*to_pid_to_str) (ptid_t);
char *(*to_extra_thread_info) (struct thread_info *);
void (*to_stop) (void);
- int (*to_query) (int /*char */ , char *, char *, int *);
void (*to_rcmd) (char *command, struct ui_file *output);
struct symtab_and_line *(*to_enable_exception_callback) (enum
exception_event_kind,
struct exception_event_record *(*to_get_current_exception_event) (void);
char *(*to_pid_to_exec_file) (int pid);
enum strata to_stratum;
- struct target_ops
- *DONT_USE; /* formerly to_next */
int to_has_all_memory;
int to_has_memory;
int to_has_stack;
void (*to_async) (void (*cb) (enum inferior_event_type, void *context),
void *context);
int to_async_mask_value;
- int (*to_find_memory_regions) (int (*) (CORE_ADDR,
- unsigned long,
- int, int, int,
- void *),
+ int (*to_find_memory_regions) (int (*) (CORE_ADDR,
+ unsigned long,
+ int, int, int,
+ void *),
void *);
char * (*to_make_corefile_notes) (bfd *, int *);
thread-local storage hasn't been allocated yet, this function
may return an error. */
CORE_ADDR (*to_get_thread_local_address) (ptid_t ptid,
- struct objfile *objfile,
+ CORE_ADDR load_module_addr,
CORE_ADDR offset);
+ /* Request that OPS transfer up to LEN 8-bit bytes of the target's
+ OBJECT. The OFFSET, for a seekable object, specifies the
+ starting point. The ANNEX can be used to provide additional
+ data-specific information to the target.
+
+ Return the number of bytes actually transfered, zero when no
+ further transfer is possible, and -1 when the transfer is not
+ supported. Return of a positive value smaller than LEN does
+ not indicate the end of the object, only the end of the
+ transfer; higher level code should continue transferring if
+ desired. This is handled in target.c.
+
+ The interface does not support a "retry" mechanism. Instead it
+ assumes that at least one byte will be transfered on each
+ successful call.
+
+ NOTE: cagney/2003-10-17: The current interface can lead to
+ fragmented transfers. Lower target levels should not implement
+ hacks, such as enlarging the transfer, in an attempt to
+ compensate for this. Instead, the target stack should be
+ extended so that it implements supply/collect methods and a
+ look-aside object cache. With that available, the lowest
+ target can safely and freely "push" data up the stack.
+
+ See target_read and target_write for more information. One,
+ and only one, of readbuf or writebuf must be non-NULL. */
+
+ LONGEST (*to_xfer_partial) (struct target_ops *ops,
+ enum target_object object, const char *annex,
+ gdb_byte *readbuf, const gdb_byte *writebuf,
+ ULONGEST offset, LONGEST len);
+
+ /* Returns the memory map for the target. A return value of NULL
+ means that no memory map is available. If a memory address
+ does not fall within any returned regions, it's assumed to be
+ RAM. The returned memory regions should not overlap.
+
+ The order of regions does not matter; target_memory_map will
+ sort regions by starting address. For that reason, this
+ function should not be called directly except via
+ target_memory_map.
+
+ This method should not cache data; if the memory map could
+ change unexpectedly, it should be invalidated, and higher
+ layers will re-fetch it. */
+ VEC(mem_region_s) *(*to_memory_map) (struct target_ops *);
+
+ /* Erases the region of flash memory starting at ADDRESS, of
+ length LENGTH.
+
+ Precondition: both ADDRESS and ADDRESS+LENGTH should be aligned
+ on flash block boundaries, as reported by 'to_memory_map'. */
+ void (*to_flash_erase) (struct target_ops *,
+ ULONGEST address, LONGEST length);
+
+ /* Finishes a flash memory write sequence. After this operation
+ all flash memory should be available for writing and the result
+ of reading from areas written by 'to_flash_write' should be
+ equal to what was written. */
+ void (*to_flash_done) (struct target_ops *);
+
+ /* Describe the architecture-specific features of this target.
+ Returns the description found, or NULL if no description
+ was available. */
+ const struct target_desc *(*to_read_description) (struct target_ops *ops);
+
int to_magic;
/* Need sub-structure for target machine related rather than comm related?
*/
extern struct target_ops current_target;
-/* An item on the target stack. */
-
-struct target_stack_item
- {
- struct target_stack_item *next;
- struct target_ops *target_ops;
- };
-
-/* The target stack. */
-
-extern struct target_stack_item *target_stack;
-
/* Define easy words for doing these operations on our current target. */
#define target_shortname (current_target.to_shortname)
#define target_longname (current_target.to_longname)
-/* The open routine takes the rest of the parameters from the command,
- and (if successful) pushes a new target onto the stack.
- Targets should supply this routine, if only to provide an error message. */
-
-#define target_open(name, from_tty) \
- do { \
- dcache_invalidate (target_dcache); \
- (*current_target.to_open) (name, from_tty); \
- } while (0)
-
-/* Does whatever cleanup is required for a target that we are no longer
- going to be calling. Argument says whether we are quitting gdb and
- should not get hung in case of errors, or whether we want a clean
- termination even if it takes a while. This routine is automatically
- always called just before a routine is popped off the target stack.
- Closing file descriptors and freeing memory are typical things it should
- do. */
+/* Does whatever cleanup is required for a target that we are no
+ longer going to be calling. QUITTING indicates that GDB is exiting
+ and should not get hung on an error (otherwise it is important to
+ perform clean termination, even if it takes a while). This routine
+ is automatically always called when popping the target off the
+ target stack (to_beneath is undefined). Closing file descriptors
+ and freeing all memory allocated memory are typical things it
+ should do. */
-#define target_close(quitting) \
- (*current_target.to_close) (quitting)
+void target_close (struct target_ops *targ, int quitting);
/* Attaches to a process on the target side. Arguments are as passed
to the `attach' command by the user. This routine can be called
when the target is not on the target-stack, if the target_can_run
- routine returns 1; in that case, it must push itself onto the stack.
+ routine returns 1; in that case, it must push itself onto the stack.
Upon exit, the target should be ready for normal operations, and
- should be ready to deliver the status of the process immediately
+ should be ready to deliver the status of the process immediately
(without waiting) to an upcoming target_wait call. */
#define target_attach(args, from_tty) \
#define target_post_attach(pid) \
(*current_target.to_post_attach) (pid)
-/* Attaches to a process on the target side, if not already attached.
- (If already attached, takes no action.)
-
- This operation can be used to follow the child process of a fork.
- On some targets, such child processes of an original inferior process
- are automatically under debugger control, and thus do not require an
- actual attach operation. */
-
-#define target_require_attach(args, from_tty) \
- (*current_target.to_require_attach) (args, from_tty)
-
/* Takes a program previously attached to and detaches it.
The program may resume execution (some targets do, some don't) and will
no longer stop on signals, etc. We better not have left any breakpoints
extern void target_detach (char *, int);
-/* Detaches from a process on the target side, if not already dettached.
- (If already detached, takes no action.)
-
- This operation can be used to follow the parent process of a fork.
- On some targets, such child processes of an original inferior process
- are automatically under debugger control, and thus do require an actual
- detach operation.
-
- PID is the process id of the child to detach from.
- ARGS is arguments typed by the user (e.g. a signal to send the process).
- FROM_TTY says whether to be verbose or not. */
+/* Disconnect from the current target without resuming it (leaving it
+ waiting for a debugger). */
-#define target_require_detach(pid, args, from_tty) \
- (*current_target.to_require_detach) (pid, args, from_tty)
+extern void target_disconnect (char *, int);
/* Resume execution of the target process PTID. STEP says whether to
single-step or to run free; SIGGNAL is the signal to be given to
#define target_wait(ptid, status) \
(*current_target.to_wait) (ptid, status)
-/* The target_wait operation waits for a process event to occur, and
- thereby stop the process.
-
- On some targets, certain events may happen in sequences. gdb's
- correct response to any single event of such a sequence may require
- knowledge of what earlier events in the sequence have been seen.
-
- This operation provides a target-specific hook that allows the
- necessary bookkeeping to be performed to track such sequences. */
-
-#define target_post_wait(ptid, status) \
- (*current_target.to_post_wait) (ptid, status)
-
/* Fetch at least register REGNO, or all regs if regno == -1. No result. */
-#define target_fetch_registers(regno) \
- (*current_target.to_fetch_registers) (regno)
+#define target_fetch_registers(regcache, regno) \
+ (*current_target.to_fetch_registers) (regcache, regno)
/* Store at least register REGNO, or all regs if REGNO == -1.
It can store as many registers as it wants to, so target_prepare_to_store
must have been previously called. Calls error() if there are problems. */
-#define target_store_registers(regs) \
- (*current_target.to_store_registers) (regs)
+#define target_store_registers(regcache, regs) \
+ (*current_target.to_store_registers) (regcache, regs)
/* Get ready to modify the registers array. On machines which store
individual registers, this doesn't need to do anything. On machines
extern DCACHE *target_dcache;
-extern int do_xfer_memory (CORE_ADDR memaddr, char *myaddr, int len, int write,
- struct mem_attrib *attrib);
-
extern int target_read_string (CORE_ADDR, char **, int, int *);
-extern int target_read_memory (CORE_ADDR memaddr, char *myaddr, int len);
+extern int target_read_memory (CORE_ADDR memaddr, gdb_byte *myaddr, int len);
-extern int target_write_memory (CORE_ADDR memaddr, char *myaddr, int len);
+extern int target_write_memory (CORE_ADDR memaddr, const gdb_byte *myaddr,
+ int len);
-extern int xfer_memory (CORE_ADDR, char *, int, int,
+extern int xfer_memory (CORE_ADDR, gdb_byte *, int, int,
struct mem_attrib *, struct target_ops *);
-extern int child_xfer_memory (CORE_ADDR, char *, int, int,
+extern int child_xfer_memory (CORE_ADDR, gdb_byte *, int, int,
struct mem_attrib *, struct target_ops *);
-/* Make a single attempt at transfering LEN bytes. On a successful
- transfer, the number of bytes actually transfered is returned and
- ERR is set to 0. When a transfer fails, -1 is returned (the number
- of bytes actually transfered is not defined) and ERR is set to a
- non-zero error indication. */
+/* Fetches the target's memory map. If one is found it is sorted
+ and returned, after some consistency checking. Otherwise, NULL
+ is returned. */
+VEC(mem_region_s) *target_memory_map (void);
+
+/* Erase the specified flash region. */
+void target_flash_erase (ULONGEST address, LONGEST length);
+
+/* Finish a sequence of flash operations. */
+void target_flash_done (void);
+
+/* Describes a request for a memory write operation. */
+struct memory_write_request
+ {
+ /* Begining address that must be written. */
+ ULONGEST begin;
+ /* Past-the-end address. */
+ ULONGEST end;
+ /* The data to write. */
+ gdb_byte *data;
+ /* A callback baton for progress reporting for this request. */
+ void *baton;
+ };
+typedef struct memory_write_request memory_write_request_s;
+DEF_VEC_O(memory_write_request_s);
+
+/* Enumeration specifying different flash preservation behaviour. */
+enum flash_preserve_mode
+ {
+ flash_preserve,
+ flash_discard
+ };
+
+/* Write several memory blocks at once. This version can be more
+ efficient than making several calls to target_write_memory, in
+ particular because it can optimize accesses to flash memory.
+
+ Moreover, this is currently the only memory access function in gdb
+ that supports writing to flash memory, and it should be used for
+ all cases where access to flash memory is desirable.
+
+ REQUESTS is the vector (see vec.h) of memory_write_request.
+ PRESERVE_FLASH_P indicates what to do with blocks which must be
+ erased, but not completely rewritten.
+ PROGRESS_CB is a function that will be periodically called to provide
+ feedback to user. It will be called with the baton corresponding
+ to the request currently being written. It may also be called
+ with a NULL baton, when preserved flash sectors are being rewritten.
-extern int
-target_read_memory_partial (CORE_ADDR addr, char *buf, int len, int *err);
+ The function returns 0 on success, and error otherwise. */
+int target_write_memory_blocks (VEC(memory_write_request_s) *requests,
+ enum flash_preserve_mode preserve_flash_p,
+ void (*progress_cb) (ULONGEST, void *));
-extern int
-target_write_memory_partial (CORE_ADDR addr, char *buf, int len, int *err);
extern char *child_pid_to_exec_file (int);
extern void child_post_attach (int);
#endif
-extern void child_post_wait (ptid_t, int);
-
extern void child_post_startup_inferior (ptid_t);
extern void child_acknowledge_created_inferior (int);
-extern int child_insert_fork_catchpoint (int);
+extern void child_insert_fork_catchpoint (int);
extern int child_remove_fork_catchpoint (int);
-extern int child_insert_vfork_catchpoint (int);
+extern void child_insert_vfork_catchpoint (int);
extern int child_remove_vfork_catchpoint (int);
extern void child_acknowledge_created_inferior (int);
-extern int child_follow_fork (int);
+extern int child_follow_fork (struct target_ops *, int);
-extern int child_insert_exec_catchpoint (int);
+extern void child_insert_exec_catchpoint (int);
extern int child_remove_exec_catchpoint (int);
#define target_files_info() \
(*current_target.to_files_info) (¤t_target)
-/* Insert a breakpoint at address ADDR in the target machine.
- SAVE is a pointer to memory allocated for saving the
- target contents. It is guaranteed by the caller to be long enough
- to save "sizeof BREAKPOINT" bytes. Result is 0 for success, or
- an errno value. */
+/* Insert a breakpoint at address BP_TGT->placed_address in the target
+ machine. Result is 0 for success, or an errno value. */
-#define target_insert_breakpoint(addr, save) \
- (*current_target.to_insert_breakpoint) (addr, save)
+#define target_insert_breakpoint(bp_tgt) \
+ (*current_target.to_insert_breakpoint) (bp_tgt)
-/* Remove a breakpoint at address ADDR in the target machine.
- SAVE is a pointer to the same save area
- that was previously passed to target_insert_breakpoint.
- Result is 0 for success, or an errno value. */
+/* Remove a breakpoint at address BP_TGT->placed_address in the target
+ machine. Result is 0 for success, or an errno value. */
-#define target_remove_breakpoint(addr, save) \
- (*current_target.to_remove_breakpoint) (addr, save)
+#define target_remove_breakpoint(bp_tgt) \
+ (*current_target.to_remove_breakpoint) (bp_tgt)
/* Initialize the terminal settings we record for the inferior,
before we actually run the inferior. */
/* Load an executable file into the target process. This is expected
to not only bring new code into the target process, but also to
- update GDB's symbol tables to match. */
+ update GDB's symbol tables to match.
+
+ ARG contains command-line arguments, to be broken down with
+ buildargv (). The first non-switch argument is the filename to
+ load, FILE; the second is a number (as parsed by strtoul (..., ...,
+ 0)), which is an offset to apply to the load addresses of FILE's
+ sections. The target may define switches, or other non-switch
+ arguments, as it pleases. */
extern void target_load (char *arg, int from_tty);
ENV is the environment vector to pass. Errors reported with error().
On VxWorks and various standalone systems, we ignore exec_file. */
-#define target_create_inferior(exec_file, args, env) \
- (*current_target.to_create_inferior) (exec_file, args, env)
+#define target_create_inferior(exec_file, args, env, FROM_TTY) \
+ (*current_target.to_create_inferior) (exec_file, args, env, (FROM_TTY))
/* Some targets (such as ttrace-based HPUX) don't allow us to request
This function returns 1 if the inferior should not be resumed
(i.e. there is another event pending). */
-#define target_follow_fork(follow_child) \
- (*current_target.to_follow_fork) (follow_child)
+int target_follow_fork (int follow_child);
/* On some targets, we can catch an inferior exec event when it
occurs. These functions insert/remove an already-created
(*current_target.to_has_exited) (pid,wait_status,exit_status)
/* The debugger has completed a blocking wait() call. There is now
- some process event that must be processed. This function should
+ some process event that must be processed. This function should
be defined by those targets that require the debugger to perform
cleanup or internal state changes in response to the process event. */
#define target_stop current_target.to_stop
-/* Queries the target side for some information. The first argument is a
- letter specifying the type of the query, which is used to determine who
- should process it. The second argument is a string that specifies which
- information is desired and the third is a buffer that carries back the
- response from the target side. The fourth parameter is the size of the
- output buffer supplied. */
-
-#define target_query(query_type, query, resp_buffer, bufffer_size) \
- (*current_target.to_query) (query_type, query, resp_buffer, bufffer_size)
-
/* Send the specified COMMAND to the target's monitor
(shell,interpreter) for execution. The result of the query is
placed in OUTBUF. */
/* Get the symbol information for a breakpointable routine called when
- an exception event occurs.
+ an exception event occurs.
Intended mainly for C++, and for those
platforms/implementations where such a callback mechanism is available,
e.g. HP-UX with ANSI C++ (aCC). Some compilers (e.g. g++) support
#define target_get_current_exception_event() \
(*current_target.to_get_current_exception_event) ()
-/* Pointer to next target in the chain, e.g. a core file and an exec file. */
-
-#define target_next \
- (current_target.to_next)
-
/* Does the target include all of memory, or only part of it? This
determines whether we look up the target chain for other parts of
memory if this target can't satisfy a request. */
(current_target.to_has_registers)
/* Does the target have execution? Can we make it jump (through
- hoops), or pop its stack a few times? FIXME: If this is to work that
- way, it needs to check whether an inferior actually exists.
- remote-udi.c and probably other targets can be the current target
- when the inferior doesn't actually exist at the moment. Right now
- this just tells us whether this target is *capable* of execution. */
+ hoops), or pop its stack a few times? This means that the current
+ target is currently executing; for some targets, that's the same as
+ whether or not the target is capable of execution, but there are
+ also targets which can be current while not executing. In that
+ case this will become true after target_create_inferior or
+ target_attach. */
#define target_has_execution \
(current_target.to_has_execution)
#define target_async(CALLBACK,CONTEXT) \
(current_target.to_async((CALLBACK), (CONTEXT)))
-/* This is to be used ONLY within run_stack_dummy(). It
- provides a workaround, to have inferior function calls done in
- sychronous mode, even though the target is asynchronous. After
+/* This is to be used ONLY within call_function_by_hand(). It provides
+ a workaround, to have inferior function calls done in sychronous
+ mode, even though the target is asynchronous. After
target_async_mask(0) is called, calls to target_can_async_p() will
return FALSE , so that target_resume() will not try to start the
target asynchronously. After the inferior stops, we IMMEDIATELY
restore the previous nature of the target, by calling
target_async_mask(1). After that, target_can_async_p() will return
- TRUE. ANY OTHER USE OF THIS FEATURE IS DEPRECATED.
+ TRUE. ANY OTHER USE OF THIS FEATURE IS DEPRECATED.
FIXME ezannoni 1999-12-13: we won't need this once we move
the turning async on and off to the single execution commands,
#define target_async_mask_value \
(current_target.to_async_mask_value)
-extern int target_async_mask (int mask);
-
-extern void target_link (char *, CORE_ADDR *);
+extern int target_async_mask (int mask);
/* Converts a process id to a string. Usually, the string just contains
`process xyz', but on some systems it may contain
* New Objfile Event Hook:
*
* Sometimes a GDB component wants to get notified whenever a new
- * objfile is loaded. Mainly this is used by thread-debugging
+ * objfile is loaded. Mainly this is used by thread-debugging
* implementations that need to know when symbols for the target
* thread implemenation are available.
*
* The old way of doing this is to define a macro 'target_new_objfile'
* that points to the function that you want to be called on every
* objfile/shlib load.
- *
- * The new way is to grab the function pointer, 'target_new_objfile_hook',
- * and point it to the function that you want to be called on every
- * objfile/shlib load.
- *
- * If multiple clients are willing to be cooperative, they can each
- * save a pointer to the previous value of target_new_objfile_hook
- * before modifying it, and arrange for their function to call the
- * previous function in the chain. In that way, multiple clients
- * can receive this notification (something like with signal handlers).
- */
-extern void (*target_new_objfile_hook) (struct objfile *);
+ The new way is to grab the function pointer,
+ 'deprecated_target_new_objfile_hook', and point it to the function
+ that you want to be called on every objfile/shlib load.
+
+ If multiple clients are willing to be cooperative, they can each
+ save a pointer to the previous value of
+ deprecated_target_new_objfile_hook before modifying it, and arrange
+ for their function to call the previous function in the chain. In
+ that way, multiple clients can receive this notification (something
+ like with signal handlers). */
+
+extern void (*deprecated_target_new_objfile_hook) (struct objfile *);
#ifndef target_pid_or_tid_to_str
#define target_pid_or_tid_to_str(ID) \
* Iterator function for target memory regions.
* Calls a callback function once for each memory region 'mapped'
* in the child process. Defined as a simple macro rather than
- * as a function macro so that it can be tested for nullity.
+ * as a function macro so that it can be tested for nullity.
*/
#define target_find_memory_regions(FUNC, DATA) \
#define target_get_thread_local_address_p() \
(target_get_thread_local_address != NULL)
-/* Hook to call target-dependent code after reading in a new symbol table. */
-
-#ifndef TARGET_SYMFILE_POSTREAD
-#define TARGET_SYMFILE_POSTREAD(OBJFILE)
-#endif
-
-/* Hook to call target dependent code just after inferior target process has
- started. */
-
-#ifndef TARGET_CREATE_INFERIOR_HOOK
-#define TARGET_CREATE_INFERIOR_HOOK(PID)
-#endif
/* Hardware watchpoint interfaces. */
(*current_target.to_stopped_by_watchpoint) ()
#endif
-/* HP-UX supplies these operations, which respectively disable and enable
- the memory page-protections that are used to implement hardware watchpoints
- on that platform. See wait_for_inferior's use of these. */
+/* Non-zero if we have steppable watchpoints */
-#if !defined(TARGET_DISABLE_HW_WATCHPOINTS)
-#define TARGET_DISABLE_HW_WATCHPOINTS(pid)
+#ifndef HAVE_STEPPABLE_WATCHPOINT
+#define HAVE_STEPPABLE_WATCHPOINT \
+ (current_target.to_have_steppable_watchpoint)
#endif
-#if !defined(TARGET_ENABLE_HW_WATCHPOINTS)
-#define TARGET_ENABLE_HW_WATCHPOINTS(pid)
+/* Non-zero if we have continuable watchpoints */
+
+#ifndef HAVE_CONTINUABLE_WATCHPOINT
+#define HAVE_CONTINUABLE_WATCHPOINT \
+ (current_target.to_have_continuable_watchpoint)
#endif
/* Provide defaults for hardware watchpoint functions. */
-/* If the *_hw_beakpoint functions have not been defined
+/* If the *_hw_beakpoint functions have not been defined
elsewhere use the definitions in the target vector. */
/* Returns non-zero if we can set a hardware watchpoint of type TYPE. TYPE is
(*current_target.to_can_use_hw_breakpoint) (TYPE, CNT, OTHERTYPE);
#endif
-#if !defined(TARGET_REGION_SIZE_OK_FOR_HW_WATCHPOINT)
-#define TARGET_REGION_SIZE_OK_FOR_HW_WATCHPOINT(byte_count) \
- (*current_target.to_region_size_ok_for_hw_watchpoint) (byte_count)
+#ifndef TARGET_REGION_OK_FOR_HW_WATCHPOINT
+#define TARGET_REGION_OK_FOR_HW_WATCHPOINT(addr, len) \
+ (*current_target.to_region_ok_for_hw_watchpoint) (addr, len)
#endif
#endif
#ifndef target_insert_hw_breakpoint
-#define target_insert_hw_breakpoint(addr, save) \
- (*current_target.to_insert_hw_breakpoint) (addr, save)
+#define target_insert_hw_breakpoint(bp_tgt) \
+ (*current_target.to_insert_hw_breakpoint) (bp_tgt)
-#define target_remove_hw_breakpoint(addr, save) \
- (*current_target.to_remove_hw_breakpoint) (addr, save)
+#define target_remove_hw_breakpoint(bp_tgt) \
+ (*current_target.to_remove_hw_breakpoint) (bp_tgt)
#endif
-#ifndef target_stopped_data_address
-#define target_stopped_data_address() \
- (*current_target.to_stopped_data_address) ()
-#endif
+extern int target_stopped_data_address_p (struct target_ops *);
-/* If defined, then we need to decr pc by this much after a hardware break-
- point. Presumably this overrides DECR_PC_AFTER_BREAK... */
-
-#ifndef DECR_PC_AFTER_HW_BREAK
-#define DECR_PC_AFTER_HW_BREAK 0
-#endif
-
-/* Sometimes gdb may pick up what appears to be a valid target address
- from a minimal symbol, but the value really means, essentially,
- "This is an index into a table which is populated when the inferior
- is run. Therefore, do not attempt to use this as a PC." */
-
-#if !defined(PC_REQUIRES_RUN_BEFORE_USE)
-#define PC_REQUIRES_RUN_BEFORE_USE(pc) (0)
-#endif
-
-/* This will only be defined by a target that supports catching vfork events,
- such as HP-UX.
-
- On some targets (such as HP-UX 10.20 and earlier), resuming a newly vforked
- child process after it has exec'd, causes the parent process to resume as
- well. To prevent the parent from running spontaneously, such targets should
- define this to a function that prevents that from happening. */
-#if !defined(ENSURE_VFORKING_PARENT_REMAINS_STOPPED)
-#define ENSURE_VFORKING_PARENT_REMAINS_STOPPED(PID) (0)
+#ifndef target_stopped_data_address
+#define target_stopped_data_address(target, x) \
+ (*target.to_stopped_data_address) (target, x)
+#else
+/* Horrible hack to get around existing macros :-(. */
+#define target_stopped_data_address_p(CURRENT_TARGET) (1)
#endif
-/* This will only be defined by a target that supports catching vfork events,
- such as HP-UX.
-
- On some targets (such as HP-UX 10.20 and earlier), a newly vforked child
- process must be resumed when it delivers its exec event, before the parent
- vfork event will be delivered to us. */
-
-#if !defined(RESUME_EXECD_VFORKING_CHILD_TO_GET_PARENT_VFORK)
-#define RESUME_EXECD_VFORKING_CHILD_TO_GET_PARENT_VFORK() (0)
-#endif
+extern const struct target_desc *target_read_description (struct target_ops *);
/* Routines for maintenance of the target structures...
extern int unpush_target (struct target_ops *);
+extern void target_pre_inferior (int);
+
extern void target_preopen (int);
extern void pop_target (void);
+extern CORE_ADDR target_translate_tls_address (struct objfile *objfile,
+ CORE_ADDR offset);
+
+/* Mark a pushed target as running or exited, for targets which do not
+ automatically pop when not active. */
+
+void target_mark_running (struct target_ops *);
+
+void target_mark_exited (struct target_ops *);
+
/* Struct section_table maps address ranges to file sections. It is
mostly used with BFD files, but can be used without (e.g. for handling
raw disks, or files not in formats handled by BFD). */
CORE_ADDR addr; /* Lowest address in section */
CORE_ADDR endaddr; /* 1+highest address in section */
- sec_ptr the_bfd_section;
+ struct bfd_section *the_bfd_section;
bfd *bfd; /* BFD file pointer */
};
-/* Builds a section table, given args BFD, SECTABLE_PTR, SECEND_PTR.
- Returns 0 if OK, 1 on error. */
+/* Return the "section" containing the specified address. */
+struct section_table *target_section_by_addr (struct target_ops *target,
+ CORE_ADDR addr);
-extern int
-build_section_table (bfd *, struct section_table **, struct section_table **);
/* From mem-break.c */
-extern int memory_remove_breakpoint (CORE_ADDR, char *);
-
-extern int memory_insert_breakpoint (CORE_ADDR, char *);
+extern int memory_remove_breakpoint (struct bp_target_info *);
-extern int default_memory_remove_breakpoint (CORE_ADDR, char *);
+extern int memory_insert_breakpoint (struct bp_target_info *);
-extern int default_memory_insert_breakpoint (CORE_ADDR, char *);
+extern int default_memory_remove_breakpoint (struct bp_target_info *);
-extern const unsigned char *memory_breakpoint_from_pc (CORE_ADDR *pcptr,
- int *lenptr);
+extern int default_memory_insert_breakpoint (struct bp_target_info *);
/* From target.c */
extern void find_default_attach (char *, int);
-extern void find_default_require_attach (char *, int);
-
-extern void find_default_require_detach (int, char *, int);
-
-extern void find_default_create_inferior (char *, char *, char **);
+extern void find_default_create_inferior (char *, char *, char **, int);
extern struct target_ops *find_run_target (void);
extern struct target_ops *find_target_beneath (struct target_ops *);
-extern int
-target_resize_to_sections (struct target_ops *target, int num_added);
+extern int target_resize_to_sections (struct target_ops *target,
+ int num_added);
extern void remove_target_sections (bfd *abfd);
/* Blank target vector entries are initialized to target_ignore. */
void target_ignore (void);
+extern struct target_ops deprecated_child_ops;
+
#endif /* !defined (TARGET_H) */
projects / deliverable / binutils-gdb.git / blobdiff