/* Interface between GDB and target environments, including files and processes
- Copyright (C) 1990-2012 Free Software Foundation, Inc.
+ Copyright (C) 1990-2013 Free Software Foundation, Inc.
Contributed by Cygnus Support. Written by John Gilmore.
it goes into the file stratum, which is always below the process
stratum. */
+#include "target-common.h"
#include "bfd.h"
#include "symtab.h"
#include "memattr.h"
#include "vec.h"
#include "gdb_signals.h"
+#include "btrace.h"
+#include "command.h"
enum strata
{
tc_schedlock = 1, /* Can lock the thread scheduler. */
};
-/* Stuff for target_wait. */
-
-/* Generally, what has the program done? */
-enum target_waitkind
- {
- /* The program has exited. The exit status is in value.integer. */
- TARGET_WAITKIND_EXITED,
-
- /* The program has stopped with a signal. Which signal is in
- value.sig. */
- TARGET_WAITKIND_STOPPED,
-
- /* The program has terminated with a signal. Which signal is in
- value.sig. */
- TARGET_WAITKIND_SIGNALLED,
-
- /* The program is letting us know that it dynamically loaded something
- (e.g. it called load(2) on AIX). */
- TARGET_WAITKIND_LOADED,
-
- /* The program has forked. A "related" process' PTID is in
- value.related_pid. I.e., if the child forks, value.related_pid
- is the parent's ID. */
-
- TARGET_WAITKIND_FORKED,
-
- /* The program has vforked. A "related" process's PTID is in
- value.related_pid. */
-
- TARGET_WAITKIND_VFORKED,
-
- /* The program has exec'ed a new executable file. The new file's
- pathname is pointed to by value.execd_pathname. */
-
- TARGET_WAITKIND_EXECD,
-
- /* The program had previously vforked, and now the child is done
- with the shared memory region, because it exec'ed or exited.
- Note that the event is reported to the vfork parent. This is
- only used if GDB did not stay attached to the vfork child,
- otherwise, a TARGET_WAITKIND_EXECD or
- TARGET_WAITKIND_EXIT|SIGNALLED event associated with the child
- has the same effect. */
- TARGET_WAITKIND_VFORK_DONE,
-
- /* The program has entered or returned from a system call. On
- HP-UX, this is used in the hardware watchpoint implementation.
- The syscall's unique integer ID number is in value.syscall_id. */
-
- TARGET_WAITKIND_SYSCALL_ENTRY,
- TARGET_WAITKIND_SYSCALL_RETURN,
-
- /* Nothing happened, but we stopped anyway. This perhaps should be handled
- within target_wait, but I'm not sure target_wait should be resuming the
- inferior. */
- TARGET_WAITKIND_SPURIOUS,
-
- /* 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
- to the event loop and wait there for another event from the
- inferior, rather than being stuck in the remote_async_wait()
- function. sThis way the event loop is responsive to other events,
- like for instance the user typing. */
- TARGET_WAITKIND_IGNORE,
-
- /* The target has run out of history information,
- and cannot run backward any further. */
- TARGET_WAITKIND_NO_HISTORY,
-
- /* There are no resumed children left in the program. */
- TARGET_WAITKIND_NO_RESUMED
- };
-
-struct target_waitstatus
- {
- enum target_waitkind kind;
-
- /* Forked child pid, execd pathname, exit status, signal number or
- syscall number. */
- union
- {
- int integer;
- enum gdb_signal sig;
- ptid_t related_pid;
- char *execd_pathname;
- int syscall_number;
- }
- value;
- };
-
-/* Options that can be passed to target_wait. */
-
-/* Return immediately if there's no event already queued. If this
- options is not requested, target_wait blocks waiting for an
- event. */
-#define TARGET_WNOHANG 1
-
/* The structure below stores information about a system call.
It is basically used in the "catch syscall" command, and in
every function that gives information about a system call.
Space for the result is malloc'd, caller must free. */
extern char *target_waitstatus_to_string (const struct target_waitstatus *);
+/* Return a pretty printed form of TARGET_OPTIONS.
+ Space for the result is malloc'd, caller must free. */
+extern char *target_options_to_string (int target_options);
+
/* Possible types of events that the inferior handler will have to
deal with. */
enum inferior_event_type
TARGET_OBJECT_LIBRARIES,
/* Currently loaded libraries specific for SVR4 systems, in XML format. */
TARGET_OBJECT_LIBRARIES_SVR4,
+ /* Currently loaded libraries specific to AIX systems, in XML format. */
+ TARGET_OBJECT_LIBRARIES_AIX,
/* Get OS specific data. The ANNEX specifies the type (running
processes, etc.). The data being transfered is expected to follow
the DTD specified in features/osdata.dtd. */
/* Darwin dynamic linker info data. */
TARGET_OBJECT_DARWIN_DYLD_INFO,
/* OpenVMS Unwind Information Block. */
- TARGET_OBJECT_OPENVMS_UIB
+ TARGET_OBJECT_OPENVMS_UIB,
+ /* Branch trace data, in XML format. */
+ TARGET_OBJECT_BTRACE
/* Possible future objects: TARGET_OBJECT_FILE, ... */
};
/* 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_xclose) (struct target_ops *targ);
+ void (*to_close) (void);
void (*to_attach) (struct target_ops *ops, char *, int);
void (*to_post_attach) (int);
void (*to_detach) (struct target_ops *ops, char *, int);
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_terminal_info) (const char *, int);
void (*to_kill) (struct target_ops *);
void (*to_load) (char *, int);
void (*to_create_inferior) (struct target_ops *,
end? */
int (*to_supports_evaluation_of_breakpoint_conditions) (void);
+ /* Does this target support evaluation of breakpoint commands on its
+ end? */
+ int (*to_can_run_breakpoint_commands) (void);
+
/* Determine current architecture of thread PTID.
The target is supposed to determine the architecture of the code where
to_thread_architecture would return SPU, otherwise PPC32 or PPC64).
This is architecture used to perform decr_pc_after_break adjustment,
and also determines the frame architecture of the innermost frame.
- ptrace operations need to operate according to target_gdbarch.
+ ptrace operations need to operate according to target_gdbarch ().
- The default implementation always returns target_gdbarch. */
+ The default implementation always returns target_gdbarch (). */
struct gdbarch *(*to_thread_architecture) (struct target_ops *, ptid_t);
/* Determine current address space of thread PTID.
TPP. If no trace frame matches, return -1. May throw if the
operation fails. */
int (*to_trace_find) (enum trace_find_type type, int num,
- ULONGEST addr1, ULONGEST addr2, int *tpp);
+ CORE_ADDR addr1, CORE_ADDR addr2, int *tpp);
/* Get the value of the trace state variable number TSV, returning
1 if the value is known and writing the value itself into the
disconnection - set VAL to 1 to keep tracing, 0 to stop. */
void (*to_set_disconnected_tracing) (int val);
void (*to_set_circular_trace_buffer) (int val);
+ /* Set the size of trace buffer in the target. */
+ void (*to_set_trace_buffer_size) (LONGEST val);
/* Add/change textual notes about the trace run, returning 1 if
successful, 0 otherwise. */
- int (*to_set_trace_notes) (char *user, char *notes, char* stopnotes);
+ int (*to_set_trace_notes) (const char *user, const char *notes,
+ const char *stopnotes);
/* Return the processor core that thread PTID was last seen on.
This information is updated only when:
(const char *id);
/* Return a traceframe info object describing the current
- traceframe's contents. This method should not cache data;
- higher layers take care of caching, invalidating, and
- re-fetching when necessary. */
+ traceframe's contents. If the target doesn't support
+ traceframe info, return NULL. If the current traceframe is not
+ selected (the current traceframe number is -1), the target can
+ choose to return either NULL or an empty traceframe info. If
+ NULL is returned, for example in remote target, GDB will read
+ from the live inferior. If an empty traceframe info is
+ returned, for example in tfile target, which means the
+ traceframe info is available, but the requested memory is not
+ available in it. GDB will try to see if the requested memory
+ is available in the read-only sections. This method should not
+ cache data; higher layers take care of caching, invalidating,
+ and re-fetching when necessary. */
struct traceframe_info *(*to_traceframe_info) (void);
/* Ask the target to use or not to use agent according to USE. Return 1
/* Is the target able to use agent in current state? */
int (*to_can_use_agent) (void);
+ /* Check whether the target supports branch tracing. */
+ int (*to_supports_btrace) (void);
+
+ /* Enable branch tracing for PTID and allocate a branch trace target
+ information struct for reading and for disabling branch trace. */
+ struct btrace_target_info *(*to_enable_btrace) (ptid_t ptid);
+
+ /* Disable branch tracing and deallocate TINFO. */
+ void (*to_disable_btrace) (struct btrace_target_info *tinfo);
+
+ /* Disable branch tracing and deallocate TINFO. This function is similar
+ to to_disable_btrace, except that it is called during teardown and is
+ only allowed to perform actions that are safe. A counter-example would
+ be attempting to talk to a remote target. */
+ void (*to_teardown_btrace) (struct btrace_target_info *tinfo);
+
+ /* Read branch trace data. */
+ VEC (btrace_block_s) *(*to_read_btrace) (struct btrace_target_info *,
+ enum btrace_read_type);
+
+ /* Stop trace recording. */
+ void (*to_stop_recording) (void);
+
+ /* Print information about the recording. */
+ void (*to_info_record) (void);
+
+ /* Save the recorded execution trace into a file. */
+ void (*to_save_record) (const char *filename);
+
+ /* Delete the recorded execution trace from the current position onwards. */
+ void (*to_delete_record) (void);
+
+ /* Query if the record target is currently replaying. */
+ int (*to_record_is_replaying) (void);
+
+ /* Go to the begin of the execution trace. */
+ void (*to_goto_record_begin) (void);
+
+ /* Go to the end of the execution trace. */
+ void (*to_goto_record_end) (void);
+
+ /* Go to a specific location in the recorded execution trace. */
+ void (*to_goto_record) (ULONGEST insn);
+
+ /* Disassemble SIZE instructions in the recorded execution trace from
+ the current position.
+ If SIZE < 0, disassemble abs (SIZE) preceding instructions; otherwise,
+ disassemble SIZE succeeding instructions. */
+ void (*to_insn_history) (int size, int flags);
+
+ /* Disassemble SIZE instructions in the recorded execution trace around
+ FROM.
+ If SIZE < 0, disassemble abs (SIZE) instructions before FROM; otherwise,
+ disassemble SIZE instructions after FROM. */
+ void (*to_insn_history_from) (ULONGEST from, int size, int flags);
+
+ /* Disassemble a section of the recorded execution trace from instruction
+ BEGIN (inclusive) to instruction END (exclusive). */
+ void (*to_insn_history_range) (ULONGEST begin, ULONGEST end, int flags);
+
+ /* Print a function trace of the recorded execution trace.
+ If SIZE < 0, print abs (SIZE) preceding functions; otherwise, print SIZE
+ succeeding functions. */
+ void (*to_call_history) (int size, int flags);
+
+ /* Print a function trace of the recorded execution trace starting
+ at function FROM.
+ If SIZE < 0, print abs (SIZE) functions before FROM; otherwise, print
+ SIZE functions after FROM. */
+ void (*to_call_history_from) (ULONGEST begin, int size, int flags);
+
+ /* Print a function trace of an execution trace section from function BEGIN
+ (inclusive) to function END (exclusive). */
+ void (*to_call_history_range) (ULONGEST begin, ULONGEST end, int flags);
+
+ /* Nonzero if TARGET_OBJECT_LIBRARIES_SVR4 may be read with a
+ non-empty annex. */
+ int (*to_augmented_libraries_svr4_read) (void);
+
int to_magic;
/* Need sub-structure for target machine related rather than comm related?
*/
#define target_longname (current_target.to_longname)
/* 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 after popping the target off the
- target stack - the target's own methods are no longer available
- through the target vector. Closing file descriptors and freeing all
- memory allocated memory are typical things it should do. */
+ longer going to be calling. This routine is automatically always
+ called after popping the target off the target stack - the target's
+ own methods are no longer available through the target vector.
+ Closing file descriptors and freeing all memory allocated memory are
+ typical things it should do. */
-void target_close (struct target_ops *targ, int quitting);
+void target_close (struct target_ops *targ);
/* Attaches to a process on the target side. Arguments are as passed
to the `attach' command by the user. This routine can be called
struct address_space *target_thread_address_space (ptid_t);
-/* Implement the "info proc" command. */
+/* Implement the "info proc" command. This returns one if the request
+ was handled, and zero otherwise. It can also throw an exception if
+ an error was encountered while attempting to handle the
+ request. */
-void target_info_proc (char *, enum info_proc_what);
+int target_info_proc (char *, enum info_proc_what);
/* Returns true if this target can debug multiple processes
simultaneously. */
#define target_supports_evaluation_of_breakpoint_conditions() \
(*current_target.to_supports_evaluation_of_breakpoint_conditions) ()
+/* Returns true if this target can handle breakpoint commands
+ on its end. */
+
+#define target_can_run_breakpoint_commands() \
+ (*current_target.to_can_run_breakpoint_commands) ()
+
/* Invalidate all target dcaches. */
extern void target_dcache_invalidate (void);
enum flash_preserve_mode preserve_flash_p,
void (*progress_cb) (ULONGEST, void *));
-/* From infrun.c. */
-
-extern int inferior_has_forked (ptid_t pid, ptid_t *child_pid);
-
-extern int inferior_has_vforked (ptid_t pid, ptid_t *child_pid);
-
-extern int inferior_has_execd (ptid_t pid, char **execd_pathname);
-
-extern int inferior_has_called_syscall (ptid_t pid, int *syscall_number);
-
/* Print a line about the current target. */
#define target_files_info() \
#define target_set_circular_trace_buffer(val) \
(*current_target.to_set_circular_trace_buffer) (val)
+#define target_set_trace_buffer_size(val) \
+ (*current_target.to_set_trace_buffer_size) (val)
+
#define target_set_trace_notes(user,notes,stopnotes) \
(*current_target.to_set_trace_notes) ((user), (notes), (stopnotes))
#define target_can_use_agent() \
(*current_target.to_can_use_agent) ()
+#define target_augmented_libraries_svr4_read() \
+ (*current_target.to_augmented_libraries_svr4_read) ()
+
/* Command logging facility. */
#define target_log_command(p) \
/* Routines for maintenance of the target structures...
+ complete_target_initialization: Finalize a target_ops by filling in
+ any fields needed by the target implementation.
+
add_target: Add a target to the list of all possible targets.
push_target: Make this target the top of the stack of currently used
unpush_target: Remove this from the stack of currently used targets,
no matter where it is on the list. Returns 0 if no
- change, 1 if removed from stack.
-
- pop_target: Remove the top thing on the stack of current targets. */
+ change, 1 if removed from stack. */
extern void add_target (struct target_ops *);
+extern void add_target_with_completer (struct target_ops *t,
+ completer_ftype *completer);
+
+extern void complete_target_initialization (struct target_ops *t);
+
+/* Adds a command ALIAS for target T and marks it deprecated. This is useful
+ for maintaining backwards compatibility when renaming targets. */
+
+extern void add_deprecated_target_alias (struct target_ops *t, char *alias);
+
extern void push_target (struct target_ops *);
extern int unpush_target (struct target_ops *);
extern void target_preopen (int);
-extern void pop_target (void);
-
-/* Does whatever cleanup is required to get rid of all pushed targets.
- QUITTING is propagated to target_close; it 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). */
-extern void pop_all_targets (int quitting);
+/* Does whatever cleanup is required to get rid of all pushed targets. */
+extern void pop_all_targets (void);
/* Like pop_all_targets, but pops only targets whose stratum is
strictly above ABOVE_STRATUM. */
-extern void pop_all_targets_above (enum strata above_stratum, int quitting);
+extern void pop_all_targets_above (enum strata above_stratum);
extern int target_is_pushed (struct target_ops *t);
struct bfd_section *the_bfd_section;
- bfd *bfd; /* BFD file pointer */
+ /* The "owner" of the section.
+ It can be any unique value. It is set by add_target_sections
+ and used by remove_target_sections.
+ For example, for executables it is a pointer to exec_bfd and
+ for shlibs it is the so_list pointer. */
+ void *owner;
};
/* Holds an array of target sections. Defined by [SECTIONS..SECTIONS_END[. */
extern void find_default_create_inferior (struct target_ops *,
char *, char *, char **, int);
-extern struct target_ops *find_run_target (void);
-
extern struct target_ops *find_target_beneath (struct target_ops *);
/* Read OS data object of type TYPE from the target, and return it in
/* Blank target vector entries are initialized to target_ignore. */
void target_ignore (void);
+/* See to_supports_btrace in struct target_ops. */
+extern int target_supports_btrace (void);
+
+/* See to_enable_btrace in struct target_ops. */
+extern struct btrace_target_info *target_enable_btrace (ptid_t ptid);
+
+/* See to_disable_btrace in struct target_ops. */
+extern void target_disable_btrace (struct btrace_target_info *btinfo);
+
+/* See to_teardown_btrace in struct target_ops. */
+extern void target_teardown_btrace (struct btrace_target_info *btinfo);
+
+/* See to_read_btrace in struct target_ops. */
+extern VEC (btrace_block_s) *target_read_btrace (struct btrace_target_info *,
+ enum btrace_read_type);
+
+/* See to_stop_recording in struct target_ops. */
+extern void target_stop_recording (void);
+
+/* See to_info_record in struct target_ops. */
+extern void target_info_record (void);
+
+/* See to_save_record in struct target_ops. */
+extern void target_save_record (const char *filename);
+
+/* Query if the target supports deleting the execution log. */
+extern int target_supports_delete_record (void);
+
+/* See to_delete_record in struct target_ops. */
+extern void target_delete_record (void);
+
+/* See to_record_is_replaying in struct target_ops. */
+extern int target_record_is_replaying (void);
+
+/* See to_goto_record_begin in struct target_ops. */
+extern void target_goto_record_begin (void);
+
+/* See to_goto_record_end in struct target_ops. */
+extern void target_goto_record_end (void);
+
+/* See to_goto_record in struct target_ops. */
+extern void target_goto_record (ULONGEST insn);
+
+/* See to_insn_history. */
+extern void target_insn_history (int size, int flags);
+
+/* See to_insn_history_from. */
+extern void target_insn_history_from (ULONGEST from, int size, int flags);
+
+/* See to_insn_history_range. */
+extern void target_insn_history_range (ULONGEST begin, ULONGEST end, int flags);
+
+/* See to_call_history. */
+extern void target_call_history (int size, int flags);
+
+/* See to_call_history_from. */
+extern void target_call_history_from (ULONGEST begin, int size, int flags);
+
+/* See to_call_history_range. */
+extern void target_call_history_range (ULONGEST begin, ULONGEST end, int flags);
+
#endif /* !defined (TARGET_H) */
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