diff options
Diffstat (limited to 'contrib/gdb/gdb/target.h')
| -rw-r--r-- | contrib/gdb/gdb/target.h | 523 |
1 files changed, 252 insertions, 271 deletions
diff --git a/contrib/gdb/gdb/target.h b/contrib/gdb/gdb/target.h index b5d036b..2d8ce37 100644 --- a/contrib/gdb/gdb/target.h +++ b/contrib/gdb/gdb/target.h @@ -1,6 +1,8 @@ /* 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 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, + 1999, 2000, 2001, 2002, 2003, 2004 Free Software Foundation, Inc. + Contributed by Cygnus Support. Written by John Gilmore. This file is part of GDB. @@ -23,13 +25,18 @@ #if !defined (TARGET_H) #define TARGET_H +struct objfile; +struct ui_file; +struct mem_attrib; +struct target_ops; + /* 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 @@ -112,8 +119,8 @@ enum target_waitkind inferior. */ TARGET_WAITKIND_SPURIOUS, - /* This is used for target async and extended-async - only. Remote_async_wait() returns this when there is an event + /* An event has occured, but we should wait again. + Remote_async_wait() returns this when there is an event on the inferior, but the rest of the world is not interested in it. The inferior has not stopped, but has just sent some output to the console, for instance. In this case, we want to go back @@ -148,7 +155,7 @@ enum inferior_event_type 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. */ @@ -171,6 +178,95 @@ extern char *target_signal_to_name (enum target_signal); /* Given a name (SIGHUP, etc.), return its signal. */ enum target_signal target_signal_from_name (char *); +/* Request the transfer of 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. + + NOTE: cagney/2003-10-17: The current interface does not support a + "retry" mechanism. Instead it assumes that at least one byte will + be transfered on each 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. + + NOTE: cagney/2003-10-17: Unlike the old query and the memory + transfer mechanisms, these methods are explicitly parameterized by + the target that it should be applied to. + + NOTE: cagney/2003-10-17: Just like the old query and memory xfer + methods, these new methods perform partial transfers. The only + difference is that these new methods thought to include "partial" + in the name. The old code's failure to do this lead to much + confusion and duplication of effort as each target object attempted + to locally take responsibility for something it didn't have to + worry about. + + NOTE: cagney/2003-10-17: With a TARGET_OBJECT_KOD object, for + backward compatibility with the "target_query" method that this + replaced, when OFFSET and LEN are both zero, return the "minimum" + buffer size. See "remote.c" for further information. */ + +enum target_object +{ + /* Kernel Object Display transfer. See "kod.c" and "remote.c". */ + TARGET_OBJECT_KOD, + /* 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, + /* 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 + + /* Possible future objects: TARGET_OBJECT_FILE, TARGET_OBJECT_PROC, ... */ +}; + +extern LONGEST target_read_partial (struct target_ops *ops, + enum target_object object, + const char *annex, void *buf, + ULONGEST offset, LONGEST len); + +extern LONGEST target_write_partial (struct target_ops *ops, + enum target_object object, + const char *annex, const void *buf, + ULONGEST offset, LONGEST len); + +/* Wrappers to perform the full transfer. */ +extern LONGEST target_read (struct target_ops *ops, + enum target_object object, + const char *annex, void *buf, + ULONGEST offset, LONGEST len); + +extern LONGEST target_write (struct target_ops *ops, + enum target_object object, + const char *annex, const void *buf, + ULONGEST offset, LONGEST len); + +/* 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, + void *buf, LONGEST len); +extern ULONGEST get_target_memory_unsigned (struct target_ops *ops, + CORE_ADDR addr, int len); + /* If certain kinds of activity happen, target_wait should perform callbacks. */ @@ -184,18 +280,28 @@ struct thread_info; /* fwd decl for parameter list below: */ 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) (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); @@ -222,40 +328,27 @@ struct target_ops something at MEMADDR + N. */ int (*to_xfer_memory) (CORE_ADDR memaddr, char *myaddr, - int len, int write, + int len, int write, struct mem_attrib *attrib, struct target_ops *target); -#if 0 - /* Enable this after 4.12. */ - - /* 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). - - 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 */ - void (*to_files_info) (struct target_ops *); int (*to_insert_breakpoint) (CORE_ADDR, char *); int (*to_remove_breakpoint) (CORE_ADDR, char *); + 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_remove_watchpoint) (CORE_ADDR, int, int); + int (*to_insert_watchpoint) (CORE_ADDR, int, int); + int (*to_stopped_by_watchpoint) (void); + int to_have_continuable_watchpoint; + CORE_ADDR (*to_stopped_data_address) (void); + int (*to_region_size_ok_for_hw_watchpoint) (int); void (*to_terminal_init) (void); void (*to_terminal_inferior) (void); void (*to_terminal_ours_for_output) (void); void (*to_terminal_ours) (void); + void (*to_terminal_save_ours) (void); void (*to_terminal_info) (char *, int); void (*to_kill) (void); void (*to_load) (char *, int); @@ -263,21 +356,14 @@ struct target_ops void (*to_create_inferior) (char *, char *, char **); void (*to_post_startup_inferior) (ptid_t); void (*to_acknowledge_created_inferior) (int); - void (*to_clone_and_follow_inferior) (int, int *); - void (*to_post_follow_inferior_by_clone) (void); int (*to_insert_fork_catchpoint) (int); int (*to_remove_fork_catchpoint) (int); int (*to_insert_vfork_catchpoint) (int); int (*to_remove_vfork_catchpoint) (int); - int (*to_has_forked) (int, int *); - int (*to_has_vforked) (int, int *); - int (*to_can_follow_vfork_prior_to_exec) (void); - void (*to_post_follow_vfork) (int, int, int, int); + int (*to_follow_fork) (int); int (*to_insert_exec_catchpoint) (int); int (*to_remove_exec_catchpoint) (int); - int (*to_has_execd) (int, char **); int (*to_reported_exec_events_per_exec_call) (void); - int (*to_has_syscall_event) (int, enum target_waitkind *, int *); int (*to_has_exited) (int, int, int *); void (*to_mourn_inferior) (void); int (*to_can_run) (void); @@ -287,7 +373,6 @@ struct target_ops 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, @@ -295,8 +380,6 @@ struct target_ops 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; @@ -313,12 +396,30 @@ struct target_ops 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 *); + + /* Return the thread-local address at OFFSET in the + thread-local storage for the thread PTID and the shared library + or executable file given by OBJFILE. If that block of + 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 offset); + + /* Perform partial transfers on OBJECT. See target_read_partial + and target_write_partial for details of each variant. 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, + void *readbuf, const void *writebuf, + ULONGEST offset, LONGEST len); + int to_magic; /* Need sub-structure for target machine related rather than comm related? */ @@ -335,50 +436,28 @@ struct target_ops 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. 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. */ -/* 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. */ - -#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) \ @@ -392,17 +471,6 @@ extern struct target_stack_item *target_stack; #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 @@ -412,20 +480,10 @@ extern struct target_stack_item *target_stack; 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. +/* Disconnect from the current target without resuming it (leaving it + waiting for a debugger). */ - 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. */ - -#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 @@ -494,10 +552,10 @@ extern int target_read_memory (CORE_ADDR memaddr, char *myaddr, int len); extern int target_write_memory (CORE_ADDR memaddr, char *myaddr, int len); -extern int xfer_memory (CORE_ADDR, char *, int, int, +extern int xfer_memory (CORE_ADDR, char *, 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, char *, int, int, struct mem_attrib *, struct target_ops *); /* Make a single attempt at transfering LEN bytes. On a successful @@ -506,11 +564,11 @@ extern int child_xfer_memory (CORE_ADDR, char *, int, int, of bytes actually transfered is not defined) and ERR is set to a non-zero error indication. */ -extern int -target_read_memory_partial (CORE_ADDR addr, char *buf, int len, int *err); +extern int target_read_memory_partial (CORE_ADDR addr, char *buf, int len, + int *err); -extern int -target_write_memory_partial (CORE_ADDR addr, char *buf, int len, int *err); +extern int target_write_memory_partial (CORE_ADDR addr, char *buf, int len, + int *err); extern char *child_pid_to_exec_file (int); @@ -526,10 +584,6 @@ extern void child_post_startup_inferior (ptid_t); extern void child_acknowledge_created_inferior (int); -extern void child_clone_and_follow_inferior (int, int *); - -extern void child_post_follow_inferior_by_clone (void); - extern int child_insert_fork_catchpoint (int); extern int child_remove_fork_catchpoint (int); @@ -538,30 +592,28 @@ extern int child_insert_vfork_catchpoint (int); extern int child_remove_vfork_catchpoint (int); -extern int child_has_forked (int, int *); - -extern int child_has_vforked (int, int *); - extern void child_acknowledge_created_inferior (int); -extern int child_can_follow_vfork_prior_to_exec (void); - -extern void child_post_follow_vfork (int, int, int, int); +extern int child_follow_fork (int); extern int child_insert_exec_catchpoint (int); extern int child_remove_exec_catchpoint (int); -extern int child_has_execd (int, char **); - extern int child_reported_exec_events_per_exec_call (void); -extern int child_has_syscall_event (int, enum target_waitkind *, int *); - extern int child_has_exited (int, int, int *); extern int child_thread_alive (ptid_t); +/* From infrun.c. */ + +extern int inferior_has_forked (int pid, int *child_pid); + +extern int inferior_has_vforked (int pid, int *child_pid); + +extern int inferior_has_execd (int pid, char **execd_pathname); + /* From exec.c */ extern void print_section_info (struct target_ops *, bfd *); @@ -571,18 +623,18 @@ extern void print_section_info (struct target_ops *, bfd *); #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 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 the number of + breakpoint bytes indicated by BREAKPOINT_FROM_PC. Result is 0 for + success, or an errno value. */ #define target_insert_breakpoint(addr, save) \ (*current_target.to_insert_breakpoint) (addr, save) /* 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. + 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. */ #define target_remove_breakpoint(addr, save) \ @@ -618,6 +670,14 @@ extern void print_section_info (struct target_ops *, bfd *); #define target_terminal_ours() \ (*current_target.to_terminal_ours) () +/* Save our terminal settings. + This is called from TUI after entering or leaving the curses + mode. Since curses modifies our terminal this call is here + to take this change into account. */ + +#define target_terminal_save_ours() \ + (*current_target.to_terminal_save_ours) () + /* Print useful information about our terminal status, if such a thing exists. */ @@ -675,33 +735,6 @@ extern void target_load (char *arg, int from_tty); #define target_acknowledge_created_inferior(pid) \ (*current_target.to_acknowledge_created_inferior) (pid) -/* An inferior process has been created via a fork() or similar - system call. This function will clone the debugger, then ensure - that CHILD_PID is attached to by that debugger. - - FOLLOWED_CHILD is set TRUE on return *for the clone debugger only*, - and FALSE otherwise. (The original and clone debuggers can use this - to determine which they are, if need be.) - - (This is not a terribly useful feature without a GUI to prevent - the two debuggers from competing for shell input.) */ - -#define target_clone_and_follow_inferior(child_pid,followed_child) \ - (*current_target.to_clone_and_follow_inferior) (child_pid, followed_child) - -/* This operation is intended to be used as the last in a sequence of - steps taken when following both parent and child of a fork. This - is used by a clone of the debugger, which will follow the child. - - The original debugger has detached from this process, and the - clone has attached to it. - - On some targets, this requires a bit of cleanup to make it work - correctly. */ - -#define target_post_follow_inferior_by_clone() \ - (*current_target.to_post_follow_inferior_by_clone) () - /* On some targets, we can catch an inferior fork or vfork event when it occurs. These functions insert/remove an already-created catchpoint for such events. */ @@ -718,42 +751,16 @@ extern void target_load (char *arg, int from_tty); #define target_remove_vfork_catchpoint(pid) \ (*current_target.to_remove_vfork_catchpoint) (pid) -/* Returns TRUE if PID has invoked the fork() system call. And, - also sets CHILD_PID to the process id of the other ("child") - inferior process that was created by that call. */ - -#define target_has_forked(pid,child_pid) \ - (*current_target.to_has_forked) (pid,child_pid) - -/* Returns TRUE if PID has invoked the vfork() system call. And, - also sets CHILD_PID to the process id of the other ("child") - inferior process that was created by that call. */ +/* If the inferior forks or vforks, this function will be called at + the next resume in order to perform any bookkeeping and fiddling + necessary to continue debugging either the parent or child, as + requested, and releasing the other. Information about the fork + or vfork event is available via get_last_target_status (). + This function returns 1 if the inferior should not be resumed + (i.e. there is another event pending). */ -#define target_has_vforked(pid,child_pid) \ - (*current_target.to_has_vforked) (pid,child_pid) - -/* Some platforms (such as pre-10.20 HP-UX) don't allow us to do - anything to a vforked child before it subsequently calls exec(). - On such platforms, we say that the debugger cannot "follow" the - child until it has vforked. - - This function should be defined to return 1 by those targets - which can allow the debugger to immediately follow a vforked - child, and 0 if they cannot. */ - -#define target_can_follow_vfork_prior_to_exec() \ - (*current_target.to_can_follow_vfork_prior_to_exec) () - -/* An inferior process has been created via a vfork() system call. - The debugger has followed the parent, the child, or both. The - process of setting up for that follow may have required some - target-specific trickery to track the sequence of reported events. - If so, this function should be defined by those targets that - require the debugger to perform cleanup or initialization after - the vfork follow. */ - -#define target_post_follow_vfork(parent_pid,followed_parent,child_pid,followed_child) \ - (*current_target.to_post_follow_vfork) (parent_pid,followed_parent,child_pid,followed_child) +#define target_follow_fork(follow_child) \ + (*current_target.to_follow_fork) (follow_child) /* On some targets, we can catch an inferior exec event when it occurs. These functions insert/remove an already-created @@ -765,13 +772,6 @@ extern void target_load (char *arg, int from_tty); #define target_remove_exec_catchpoint(pid) \ (*current_target.to_remove_exec_catchpoint) (pid) -/* Returns TRUE if PID has invoked a flavor of the exec() system call. - And, also sets EXECD_PATHNAME to the pathname of the executable - file that was passed to exec(), and is now being executed. */ - -#define target_has_execd(pid,execd_pathname) \ - (*current_target.to_has_execd) (pid,execd_pathname) - /* Returns the number of exec events that are reported when a process invokes a flavor of the exec() system call on this target, if exec events are being reported. */ @@ -779,13 +779,6 @@ extern void target_load (char *arg, int from_tty); #define target_reported_exec_events_per_exec_call() \ (*current_target.to_reported_exec_events_per_exec_call) () -/* Returns TRUE if PID has reported a syscall event. And, also sets - KIND to the appropriate TARGET_WAITKIND_, and sets SYSCALL_ID to - the unique integer ID of the syscall. */ - -#define target_has_syscall_event(pid,kind,syscall_id) \ - (*current_target.to_has_syscall_event) (pid,kind,syscall_id) - /* Returns TRUE if PID has exited. And, also sets EXIT_STATUS to the exit code of PID, if any. */ @@ -793,7 +786,7 @@ extern void target_load (char *arg, int from_tty); (*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. */ @@ -828,16 +821,6 @@ extern void target_load (char *arg, int from_tty); #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. */ @@ -847,7 +830,7 @@ extern void target_load (char *arg, int from_tty); /* 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 @@ -861,11 +844,6 @@ extern void target_load (char *arg, int from_tty); #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. */ @@ -919,15 +897,15 @@ extern void target_load (char *arg, int from_tty); #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, @@ -936,7 +914,7 @@ extern void target_load (char *arg, int from_tty); #define target_async_mask_value \ (current_target.to_async_mask_value) -extern int target_async_mask (int mask); +extern int target_async_mask (int mask); extern void target_link (char *, CORE_ADDR *); @@ -964,7 +942,7 @@ extern char *normal_pid_to_str (ptid_t ptid); * 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. * @@ -1009,7 +987,7 @@ extern void (*target_new_objfile_hook) (struct objfile *); * 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) \ @@ -1022,11 +1000,11 @@ extern void (*target_new_objfile_hook) (struct objfile *); #define target_make_corefile_notes(BFD, SIZE_P) \ (current_target.to_make_corefile_notes) (BFD, SIZE_P) -/* Hook to call target-dependent code after reading in a new symbol table. */ - -#ifndef TARGET_SYMFILE_POSTREAD -#define TARGET_SYMFILE_POSTREAD(OBJFILE) -#endif +/* Thread-local values. */ +#define target_get_thread_local_address \ + (current_target.to_get_thread_local_address) +#define target_get_thread_local_address_p() \ + (target_get_thread_local_address != NULL) /* Hook to call target dependent code just after inferior target process has started. */ @@ -1041,7 +1019,15 @@ extern void (*target_new_objfile_hook) (struct objfile *); write). */ #ifndef STOPPED_BY_WATCHPOINT -#define STOPPED_BY_WATCHPOINT(w) 0 +#define STOPPED_BY_WATCHPOINT(w) \ + (*current_target.to_stopped_by_watchpoint) () +#endif + +/* Non-zero if we have continuable watchpoints */ + +#ifndef HAVE_CONTINUABLE_WATCHPOINT +#define HAVE_CONTINUABLE_WATCHPOINT \ + (current_target.to_have_continuable_watchpoint) #endif /* HP-UX supplies these operations, which respectively disable and enable @@ -1056,20 +1042,24 @@ extern void (*target_new_objfile_hook) (struct objfile *); #define TARGET_ENABLE_HW_WATCHPOINTS(pid) #endif -/* Provide defaults for systems that don't support hardware watchpoints. */ +/* Provide defaults for hardware watchpoint functions. */ -#ifndef TARGET_HAS_HARDWARE_WATCHPOINTS +/* 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 one of bp_hardware_watchpoint, bp_read_watchpoint, bp_write_watchpoint, or bp_hardware_breakpoint. CNT is the number of such watchpoints used so far (including this one?). OTHERTYPE is who knows what... */ -#define TARGET_CAN_USE_HARDWARE_WATCHPOINT(TYPE,CNT,OTHERTYPE) 0 +#ifndef TARGET_CAN_USE_HARDWARE_WATCHPOINT +#define TARGET_CAN_USE_HARDWARE_WATCHPOINT(TYPE,CNT,OTHERTYPE) \ + (*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) \ - ((LONGEST)(byte_count) <= REGISTER_SIZE) + (*current_target.to_region_size_ok_for_hw_watchpoint) (byte_count) #endif @@ -1077,25 +1067,25 @@ extern void (*target_new_objfile_hook) (struct objfile *); for write, 1 for read, and 2 for read/write accesses. Returns 0 for success, non-zero for failure. */ -#define target_remove_watchpoint(ADDR,LEN,TYPE) -1 -#define target_insert_watchpoint(ADDR,LEN,TYPE) -1 +#ifndef target_insert_watchpoint +#define target_insert_watchpoint(addr, len, type) \ + (*current_target.to_insert_watchpoint) (addr, len, type) -#endif /* TARGET_HAS_HARDWARE_WATCHPOINTS */ +#define target_remove_watchpoint(addr, len, type) \ + (*current_target.to_remove_watchpoint) (addr, len, type) +#endif #ifndef target_insert_hw_breakpoint -#define target_remove_hw_breakpoint(ADDR,SHADOW) -1 -#define target_insert_hw_breakpoint(ADDR,SHADOW) -1 -#endif +#define target_insert_hw_breakpoint(addr, save) \ + (*current_target.to_insert_hw_breakpoint) (addr, save) -#ifndef target_stopped_data_address -#define target_stopped_data_address() 0 +#define target_remove_hw_breakpoint(addr, save) \ + (*current_target.to_remove_hw_breakpoint) (addr, save) #endif -/* 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 +#ifndef target_stopped_data_address +#define target_stopped_data_address() \ + (*current_target.to_stopped_data_address) () #endif /* Sometimes gdb may pick up what appears to be a valid target address @@ -1163,16 +1153,15 @@ struct section_table 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 */ @@ -1184,8 +1173,6 @@ extern int default_memory_remove_breakpoint (CORE_ADDR, char *); extern int default_memory_insert_breakpoint (CORE_ADDR, char *); -extern breakpoint_from_pc_fn memory_breakpoint_from_pc; - /* From target.c */ @@ -1195,22 +1182,16 @@ extern void noprocess (void); 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_clone_and_follow_inferior (int, int *); - extern struct target_ops *find_run_target (void); extern struct target_ops *find_core_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); |
