void (*to_close) PARAMS ((int));
void (*to_attach) PARAMS ((char *, int));
void (*to_detach) PARAMS ((char *, int));
- void (*to_resume) PARAMS ((int, int));
+ void (*to_resume) PARAMS ((int, int, int));
int (*to_wait) PARAMS ((int *));
void (*to_fetch_registers) PARAMS ((int));
void (*to_store_registers) PARAMS ((int));
void (*to_prepare_to_store) PARAMS ((void));
- int (*to_xfer_memory) PARAMS ((CORE_ADDR, char *, int, int,
- struct target_ops *));
+
+ /* Transfer LEN bytes of memory between GDB address MYADDR and
+ target address MEMADDR. If WRITE, transfer them to the target, else
+ transfer them from the target. TARGET is the target from which we
+ get this function.
+
+ Return value, N, is one of the following:
+
+ 0 means that we can't handle this. If errno has been set, it is the
+ error which prevented us from doing it (FIXME: What about bfd_error?).
+
+ positive (call it N) means that we have transferred N bytes
+ starting at MEMADDR. We might be able to handle more bytes
+ beyond this length, but no promises.
+
+ 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) PARAMS ((CORE_ADDR memaddr, char *myaddr,
+ int len, int write,
+ struct target_ops * target));
+
void (*to_files_info) PARAMS ((struct target_ops *));
int (*to_insert_breakpoint) PARAMS ((CORE_ADDR, char *));
int (*to_remove_breakpoint) PARAMS ((CORE_ADDR, char *));
void (*to_create_inferior) PARAMS ((char *, char *, char **));
void (*to_mourn_inferior) PARAMS ((void));
int (*to_can_run) PARAMS ((void));
+ void (*to_notice_signals) PARAMS ((void));
enum strata to_stratum;
struct target_ops
*to_next;
#define OPS_MAGIC 3840
-/* The ops structure for our "current" target process. */
+/* The ops structure for our "current" target process. This should
+ never be NULL. If there is no target, it points to the dummy_target. */
extern struct target_ops *current_target;
typed by the user (e.g. a signal to send the process). FROM_TTY
says whether to be verbose or not. */
-#define target_detach(args, from_tty) \
- (*current_target->to_detach) (args, from_tty)
+extern void
+target_detach PARAMS ((char *, int));
-/* Resume execution of the target process. STEP says whether to single-step
- or to run free; SIGGNAL is the signal value (e.g. SIGINT) to be given
- to the target, or zero for no signal. */
+/* Resume execution of the target process PID. STEP says whether to
+ single-step or to run free; SIGGNAL is the signal value (e.g. SIGINT) to be
+ given to the target, or zero for no signal. */
-#define target_resume(step, siggnal) \
- (*current_target->to_resume) (step, siggnal)
+#define target_resume(pid, step, siggnal) \
+ (*current_target->to_resume) (pid, step, siggnal)
/* Wait for inferior process to do something. Return pid of child,
or -1 in case of error; store status through argument pointer STATUS. */
(*current_target->to_fetch_registers) (regno)
/* Store at least register REGNO, or all regs if REGNO == -1.
- It can store as many registers as it wants to, so the entire registers
- array must be valid. Result is 0 for success, -1 for problems. */
+ 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_prepare_to_store() \
(*current_target->to_prepare_to_store) ()
-/* Reading and writing memory actually happens through a glue
- function which iterates across the various targets. Result is
- 0 for success, or an errno value. */
-
extern int
target_read_string PARAMS ((CORE_ADDR, char *, int));
extern int
target_read_memory PARAMS ((CORE_ADDR, char *, int));
+extern int
+target_read_memory_partial PARAMS ((CORE_ADDR, char *, int, int *));
+
extern int
target_write_memory PARAMS ((CORE_ADDR, char *, int));
extern int
child_xfer_memory PARAMS ((CORE_ADDR, char *, int, int, struct target_ops *));
-extern int
-target_xfer_memory PARAMS ((CORE_ADDR, char *, int, int));
+/* Transfer LEN bytes between target address MEMADDR and GDB address MYADDR.
+ Returns 0 for success, errno code for failure (which includes partial
+ transfers--if you want a more useful response to partial transfers, try
+ target_read_memory_partial). */
+
+extern int target_xfer_memory PARAMS ((CORE_ADDR memaddr, char *myaddr,
+ int len, int write));
/* From exec.c */
#define target_terminal_init() \
(*current_target->to_terminal_init) ()
-
+
/* Put the inferior's terminal settings into effect.
This is preparation for starting or resuming the inferior. */
#define target_can_run(t) \
((t)->to_can_run) ()
+/* post process changes to signal handling in the inferior. */
+
+#define target_notice_signals() \
+ (*current_target->to_notice_signals) ()
+
/* Pointer to next target in the chain, e.g. a core file and an exec file. */
#define target_next \
#define target_has_registers \
(current_target->to_has_registers)
-/* Does the target have execution? Can we make it jump (through hoops),
- or pop its stack a few times? */
+/* 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. */
#define target_has_execution \
(current_target->to_has_execution)
+/* Converts a process id to a string. Usually, the string just contains
+ `process xyz', but on some systems it may contain
+ `process xyz thread abc'. */
+
+#ifndef target_pid_to_str
+#define target_pid_to_str(PID) \
+ normal_pid_to_str (PID)
+extern char *normal_pid_to_str PARAMS ((int pid));
+#endif
+
/* Routines for maintenance of the target structures...
add_target: Add a target to the list of all possible targets.
void
find_default_create_inferior PARAMS ((char *, char *, char **));
+struct target_ops *
+find_core_target PARAMS ((void));
+\f
#endif /* !defined (TARGET_H) */
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