/* Target operations for the remote server for GDB.
- Copyright (C) 2002, 2003, 2004, 2005, 2007, 2008, 2009, 2010, 2011
- Free Software Foundation, Inc.
+ Copyright (C) 2002-2015 Free Software Foundation, Inc.
Contributed by MontaVista Software.
#ifndef TARGET_H
#define TARGET_H
-struct emit_ops;
-
-/* Ways to "resume" a thread. */
-
-enum resume_kind
-{
- /* Thread should continue. */
- resume_continue,
-
- /* Thread should single-step. */
- resume_step,
+#include "target/target.h"
+#include "target/resume.h"
+#include "target/wait.h"
+#include "target/waitstatus.h"
+#include "mem-break.h"
+#include "btrace-common.h"
- /* Thread should be stopped. */
- resume_stop
-};
+struct emit_ops;
+struct buffer;
+struct process_info;
/* This structure describes how to resume a particular thread (or all
threads) based on the client's request. If thread is -1, then this
thread. If stopping a thread, and this is 0, the target should
stop the thread however it best decides to (e.g., SIGSTOP on
linux; SuspendThread on win32). This is a host signal value (not
- enum target_signal). */
+ enum gdb_signal). */
int sig;
-};
-/* 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. */
- TARGET_WAITKIND_LOADED,
-
- /* The program has exec'ed a new executable file. The new file's
- pathname is pointed to by value.execd_pathname. */
- TARGET_WAITKIND_EXECD,
-
- /* Nothing of interest to GDB happened, but we stopped anyway. */
- TARGET_WAITKIND_SPURIOUS,
-
- /* An event has occurred, but we should wait again. In this case,
- we want to go back to the event loop and wait there for another
- event from the inferior. */
- TARGET_WAITKIND_IGNORE
- };
-
-struct target_waitstatus
- {
- enum target_waitkind kind;
-
- /* Forked child pid, execd pathname, exit status or signal number. */
- union
- {
- int integer;
- enum target_signal sig;
- ptid_t related_pid;
- char *execd_pathname;
- }
- value;
- };
-
-/* Options that can be passed to target_ops->wait. */
-
-#define TARGET_WNOHANG 1
+ /* Range to single step within. Valid only iff KIND is resume_step.
+
+ Single-step once, and then continuing stepping as long as the
+ thread stops in this range. (If the range is empty
+ [STEP_RANGE_START == STEP_RANGE_END], then this is a single-step
+ request.) */
+ CORE_ADDR step_range_start; /* Inclusive */
+ CORE_ADDR step_range_end; /* Exclusive */
+};
struct target_ops
{
inferior such that it is possible to access memory.
This should generally only be called from client facing routines,
- such as gdb_read_memory/gdb_write_memory, or the insert_point
- callbacks.
+ such as gdb_read_memory/gdb_write_memory, or the GDB breakpoint
+ insertion routine.
Like `read_memory' and `write_memory' below, returns 0 on success
and errno on failure. */
int (*read_auxv) (CORE_ADDR offset, unsigned char *myaddr,
unsigned int len);
- /* Insert and remove a break or watchpoint.
- Returns 0 on success, -1 on failure and 1 on unsupported.
- The type is coded as follows:
+ /* Returns true if GDB Z breakpoint type TYPE is supported, false
+ otherwise. The type is coded as follows:
'0' - software-breakpoint
'1' - hardware-breakpoint
'2' - write watchpoint
'3' - read watchpoint
- '4' - access watchpoint */
+ '4' - access watchpoint
+ */
+ int (*supports_z_point_type) (char z_type);
+
+ /* Insert and remove a break or watchpoint.
+ Returns 0 on success, -1 on failure and 1 on unsupported. */
- int (*insert_point) (char type, CORE_ADDR addr, int len);
- int (*remove_point) (char type, CORE_ADDR addr, int len);
+ int (*insert_point) (enum raw_bkpt_type type, CORE_ADDR addr,
+ int size, struct raw_breakpoint *bp);
+ int (*remove_point) (enum raw_bkpt_type type, CORE_ADDR addr,
+ int size, struct raw_breakpoint *bp);
/* Returns 1 if target was stopped due to a watchpoint hit, 0 otherwise. */
/* Read Thread Information Block address. */
int (*get_tib_address) (ptid_t ptid, CORE_ADDR *address);
- /* Pause all threads. If FREEZE, arrange for any resume attempt be
+ /* Pause all threads. If FREEZE, arrange for any resume attempt to
be ignored until an unpause_all call unfreezes threads again.
There can be nested calls to pause_all, so a freeze counter
should be maintained. */
the pause call. */
void (*unpause_all) (int unfreeze);
- /* Cancel all pending breakpoints hits in all threads. */
- void (*cancel_breakpoints) (void);
-
/* Stabilize all threads. That is, force them out of jump pads. */
void (*stabilize_threads) (void);
pad lock object. ORIG_SIZE is the size in bytes of the
instruction at TPADDR. JUMP_ENTRY points to the address of the
jump pad entry, and on return holds the address past the end of
- the created jump pad. JJUMP_PAD_INSN is a buffer containing a
- copy of the instruction at TPADDR. ADJUST_INSN_ADDR and
- ADJUST_INSN_ADDR_END are output parameters that return the
- address range where the instruction at TPADDR was relocated
- to. */
+ the created jump pad. If a trampoline is created by the function,
+ then TRAMPOLINE and TRAMPOLINE_SIZE return the address and size of
+ the trampoline, else they remain unchanged. JJUMP_PAD_INSN is a
+ buffer containing a copy of the instruction at TPADDR.
+ ADJUST_INSN_ADDR and ADJUST_INSN_ADDR_END are output parameters that
+ return the address range where the instruction at TPADDR was relocated
+ to. If an error occurs, the ERR may be used to pass on an error
+ message. */
int (*install_fast_tracepoint_jump_pad) (CORE_ADDR tpoint, CORE_ADDR tpaddr,
CORE_ADDR collector,
CORE_ADDR lockaddr,
ULONGEST orig_size,
CORE_ADDR *jump_entry,
+ CORE_ADDR *trampoline,
+ ULONGEST *trampoline_size,
unsigned char *jjump_pad_insn,
ULONGEST *jjump_pad_insn_size,
CORE_ADDR *adjusted_insn_addr,
- CORE_ADDR *adjusted_insn_addr_end);
+ CORE_ADDR *adjusted_insn_addr_end,
+ char *err);
/* Return the bytecode operations vector for the current inferior.
Returns NULL if bytecode compilation is not supported. */
struct emit_ops *(*emit_ops) (void);
+
+ /* Returns true if the target supports disabling randomization. */
+ int (*supports_disable_randomization) (void);
+
+ /* Return the minimum length of an instruction that can be safely overwritten
+ for use as a fast tracepoint. */
+ int (*get_min_fast_tracepoint_insn_len) (void);
+
+ /* Read solib info on SVR4 platforms. */
+ int (*qxfer_libraries_svr4) (const char *annex, unsigned char *readbuf,
+ unsigned const char *writebuf,
+ CORE_ADDR offset, int len);
+
+ /* Return true if target supports debugging agent. */
+ int (*supports_agent) (void);
+
+ /* Check whether the target supports branch tracing. */
+ int (*supports_btrace) (struct target_ops *, enum btrace_format);
+
+ /* Enable branch tracing for @ptid and allocate a branch trace target
+ information struct for reading and for disabling branch trace. */
+ struct btrace_target_info *(*enable_btrace) (ptid_t ptid);
+
+ /* Disable branch tracing.
+ Returns zero on success, non-zero otherwise. */
+ int (*disable_btrace) (struct btrace_target_info *tinfo);
+
+ /* Read branch trace data into buffer. We use an int to specify the type
+ to break a cyclic dependency.
+ Return 0 on success; print an error message into BUFFER and return -1,
+ otherwise. */
+ int (*read_btrace) (struct btrace_target_info *, struct buffer *, int type);
+
+ /* Return true if target supports range stepping. */
+ int (*supports_range_stepping) (void);
};
extern struct target_ops *the_target;
#define myattach(pid) \
(*the_target->attach) (pid)
-#define kill_inferior(pid) \
- (*the_target->kill) (pid)
+int kill_inferior (int);
#define detach_inferior(pid) \
(*the_target->detach) (pid)
#define target_supports_fast_tracepoints() \
(the_target->install_fast_tracepoint_jump_pad != NULL)
+#define target_get_min_fast_tracepoint_insn_len() \
+ (the_target->get_min_fast_tracepoint_insn_len \
+ ? (*the_target->get_min_fast_tracepoint_insn_len) () : 0)
+
#define thread_stopped(thread) \
(*the_target->thread_stopped) (thread)
(*the_target->unpause_all) (unfreeze); \
} while (0)
-#define cancel_breakpoints() \
- do \
- { \
- if (the_target->cancel_breakpoints) \
- (*the_target->cancel_breakpoints) (); \
- } while (0)
-
#define stabilize_threads() \
do \
{ \
#define install_fast_tracepoint_jump_pad(tpoint, tpaddr, \
collector, lockaddr, \
orig_size, \
- jump_entry, jjump_pad_insn, \
+ jump_entry, \
+ trampoline, trampoline_size, \
+ jjump_pad_insn, \
jjump_pad_insn_size, \
adjusted_insn_addr, \
- adjusted_insn_addr_end) \
+ adjusted_insn_addr_end, \
+ err) \
(*the_target->install_fast_tracepoint_jump_pad) (tpoint, tpaddr, \
collector,lockaddr, \
orig_size, jump_entry, \
+ trampoline, \
+ trampoline_size, \
jjump_pad_insn, \
jjump_pad_insn_size, \
adjusted_insn_addr, \
- adjusted_insn_addr_end)
+ adjusted_insn_addr_end, \
+ err)
#define target_emit_ops() \
(the_target->emit_ops ? (*the_target->emit_ops) () : NULL)
+#define target_supports_disable_randomization() \
+ (the_target->supports_disable_randomization ? \
+ (*the_target->supports_disable_randomization) () : 0)
+
+#define target_supports_agent() \
+ (the_target->supports_agent ? \
+ (*the_target->supports_agent) () : 0)
+
+#define target_supports_btrace(format) \
+ (the_target->supports_btrace \
+ ? (*the_target->supports_btrace) (the_target, format) : 0)
+
+#define target_enable_btrace(ptid) \
+ (*the_target->enable_btrace) (ptid)
+
+#define target_disable_btrace(tinfo) \
+ (*the_target->disable_btrace) (tinfo)
+
+#define target_read_btrace(tinfo, buffer, type) \
+ (*the_target->read_btrace) (tinfo, buffer, type)
+
+#define target_supports_range_stepping() \
+ (the_target->supports_range_stepping ? \
+ (*the_target->supports_range_stepping) () : 0)
+
/* Start non-stop mode, returns 0 on success, -1 on failure. */
int start_non_stop (int nonstop);
(*the_target->done_accessing_memory) (); \
} while (0)
+#define target_core_of_thread(ptid) \
+ (the_target->core_of_thread ? (*the_target->core_of_thread) (ptid) \
+ : -1)
+
int read_inferior_memory (CORE_ADDR memaddr, unsigned char *myaddr, int len);
int write_inferior_memory (CORE_ADDR memaddr, const unsigned char *myaddr,
int len);
-void set_desired_inferior (int id);
+void set_desired_thread (int id);
const char *target_pid_to_str (ptid_t);
-const char *target_waitstatus_to_string (const struct target_waitstatus *);
-
#endif /* TARGET_H */
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