/* Target operations for the remote server for GDB.
- Copyright (C) 2002, 2003, 2004, 2005, 2007, 2008, 2009
- Free Software Foundation, Inc.
+ Copyright (C) 2002-2015 Free Software Foundation, Inc.
Contributed by MontaVista Software.
#ifndef TARGET_H
#define TARGET_H
+#include "target/target.h"
+#include "target/resume.h"
+#include "target/wait.h"
+#include "target/waitstatus.h"
+#include "mem-break.h"
+#include "btrace-common.h"
+
+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
entry applies to all threads. These are passed around as an
struct thread_resume
{
- unsigned long thread;
+ ptid_t thread;
- /* If non-zero, we want to single-step. */
- int step;
+ /* How to "resume". */
+ enum resume_kind kind;
- /* If non-zero, send this signal when we resume. */
+ /* If non-zero, send this signal when we resume, or to stop the
+ 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 gdb_signal). */
int sig;
+
+ /* 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
int (*attach) (unsigned long pid);
- /* Kill all inferiors. */
+ /* Kill inferior PID. Return -1 on failure, and 0 on success. */
+
+ int (*kill) (int pid);
- void (*kill) (void);
+ /* Detach from inferior PID. Return -1 on failure, and 0 on
+ success. */
- /* Detach from all inferiors.
- Return -1 on failure, and 0 on success. */
+ int (*detach) (int pid);
- int (*detach) (void);
+ /* The inferior process has died. Do what is right. */
- /* Wait for inferiors to end. */
+ void (*mourn) (struct process_info *proc);
- void (*join) (void);
+ /* Wait for inferior PID to exit. */
+ void (*join) (int pid);
/* Return 1 iff the thread with process ID PID is alive. */
- int (*thread_alive) (unsigned long pid);
+ int (*thread_alive) (ptid_t pid);
/* Resume the inferior process. */
void (*resume) (struct thread_resume *resume_info, size_t n);
- /* Wait for the inferior process to change state.
-
- STATUS will be filled in with a response code to send to GDB.
+ /* Wait for the inferior process or thread to change state. Store
+ status through argument pointer STATUS.
- Returns the signal which caused the process to stop, in the
- remote protocol numbering (e.g. TARGET_SIGNAL_STOP), or the
- exit code as an integer if *STATUS is 'W'. */
+ PTID = -1 to wait for any pid to do something, PTID(pid,0,0) to
+ wait for any thread of process pid to do something. Return ptid
+ of child, or -1 in case of error; store status through argument
+ pointer STATUS. OPTIONS is a bit set of options defined as
+ TARGET_W* above. If options contains TARGET_WNOHANG and there's
+ no child stop to report, return is
+ null_ptid/TARGET_WAITKIND_IGNORE. */
- unsigned char (*wait) (char *status);
+ ptid_t (*wait) (ptid_t ptid, struct target_waitstatus *status, int options);
/* Fetch registers from the inferior process.
If REGNO is -1, fetch all registers; otherwise, fetch at least REGNO. */
- void (*fetch_registers) (int regno);
+ void (*fetch_registers) (struct regcache *regcache, int regno);
/* Store registers to the inferior process.
If REGNO is -1, store all registers; otherwise, store at least REGNO. */
- void (*store_registers) (int regno);
+ void (*store_registers) (struct regcache *regcache, int regno);
+
+ /* Prepare to read or write memory from the inferior process.
+ Targets use this to do what is necessary to get the state of the
+ 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 GDB breakpoint
+ insertion routine.
+
+ Like `read_memory' and `write_memory' below, returns 0 on success
+ and errno on failure. */
+
+ int (*prepare_to_access_memory) (void);
+
+ /* Undo the effects of prepare_to_access_memory. */
+
+ void (*done_accessing_memory) (void);
/* Read memory from the inferior process. This should generally be
called through read_inferior_memory, which handles breakpoint shadowing.
int (*read_auxv) (CORE_ADDR offset, unsigned char *myaddr,
unsigned int len);
- /* Insert and remove a hardware watchpoint.
- Returns 0 on success, -1 on failure and 1 on unsupported.
- The type is coded as follows:
- 2 = write watchpoint
- 3 = read watchpoint
- 4 = access watchpoint
+ /* 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
*/
+ int (*supports_z_point_type) (char z_type);
- int (*insert_watchpoint) (char type, CORE_ADDR addr, int len);
- int (*remove_watchpoint) (char type, CORE_ADDR addr, int len);
+ /* Insert and remove a break or watchpoint.
+ Returns 0 on success, -1 on failure and 1 on unsupported. */
+
+ 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 the target stopped because it executed a software
+ breakpoint instruction, 0 otherwise. */
+ int (*stopped_by_sw_breakpoint) (void);
+
+ /* Returns true if the target knows whether a trap was caused by a
+ SW breakpoint triggering. */
+ int (*supports_stopped_by_sw_breakpoint) (void);
+
+ /* Returns 1 if the target stopped for a hardware breakpoint. */
+ int (*stopped_by_hw_breakpoint) (void);
+
+ /* Returns true if the target knows whether a trap was caused by a
+ HW breakpoint triggering. */
+ int (*supports_stopped_by_hw_breakpoint) (void);
+
+ /* Returns true if the target can evaluate conditions of
+ breakpoints. */
+ int (*supports_conditional_breakpoints) (void);
/* Returns 1 if target was stopped due to a watchpoint hit, 0 otherwise. */
int (*qxfer_siginfo) (const char *annex, unsigned char *readbuf,
unsigned const char *writebuf,
CORE_ADDR offset, int len);
+
+ int (*supports_non_stop) (void);
+
+ /* Enables async target events. Returns the previous enable
+ state. */
+ int (*async) (int enable);
+
+ /* Switch to non-stop (1) or all-stop (0) mode. Return 0 on
+ success, -1 otherwise. */
+ int (*start_non_stop) (int);
+
+ /* Returns true if the target supports multi-process debugging. */
+ int (*supports_multi_process) (void);
+
+ /* Returns true if fork events are supported. */
+ int (*supports_fork_events) (void);
+
+ /* Returns true if vfork events are supported. */
+ int (*supports_vfork_events) (void);
+
+ /* If not NULL, target-specific routine to process monitor command.
+ Returns 1 if handled, or 0 to perform default processing. */
+ int (*handle_monitor_command) (char *);
+
+ /* Returns the core given a thread, or -1 if not known. */
+ int (*core_of_thread) (ptid_t);
+
+ /* Read loadmaps. Read LEN bytes at OFFSET into a buffer at MYADDR. */
+ int (*read_loadmap) (const char *annex, CORE_ADDR offset,
+ unsigned char *myaddr, unsigned int len);
+
+ /* Target specific qSupported support. */
+ void (*process_qsupported) (const char *);
+
+ /* Return 1 if the target supports tracepoints, 0 (or leave the
+ callback NULL) otherwise. */
+ int (*supports_tracepoints) (void);
+
+ /* Read PC from REGCACHE. */
+ CORE_ADDR (*read_pc) (struct regcache *regcache);
+
+ /* Write PC to REGCACHE. */
+ void (*write_pc) (struct regcache *regcache, CORE_ADDR pc);
+
+ /* Return true if THREAD is known to be stopped now. */
+ int (*thread_stopped) (struct thread_info *thread);
+
+ /* 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 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. */
+ void (*pause_all) (int freeze);
+
+ /* Unpause all threads. Threads that hadn't been resumed by the
+ client should be left stopped. Basically a pause/unpause call
+ pair should not end up resuming threads that were stopped before
+ the pause call. */
+ void (*unpause_all) (int unfreeze);
+
+ /* Stabilize all threads. That is, force them out of jump pads. */
+ void (*stabilize_threads) (void);
+
+ /* Install a fast tracepoint jump pad. TPOINT is the address of the
+ tracepoint internal object as used by the IPA agent. TPADDR is
+ the address of tracepoint. COLLECTOR is address of the function
+ the jump pad redirects to. LOCKADDR is the address of the jump
+ 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. 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,
+ 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 based on CONF and allocate a branch trace
+ target information struct for reading and for disabling branch trace. */
+ struct btrace_target_info *(*enable_btrace)
+ (ptid_t ptid, const struct btrace_config *conf);
+
+ /* 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);
+
+ /* Read the branch trace configuration into BUFFER.
+ Return 0 on success; print an error message into BUFFER and return -1
+ otherwise. */
+ int (*read_btrace_conf) (const struct btrace_target_info *, struct buffer *);
+
+ /* Return true if target supports range stepping. */
+ int (*supports_range_stepping) (void);
+
+ /* Return the full absolute name of the executable file that was
+ run to create the process PID. If the executable file cannot
+ be determined, NULL is returned. Otherwise, a pointer to a
+ character string containing the pathname is returned. This
+ string should be copied into a buffer by the client if the string
+ will not be immediately used, or if it must persist. */
+ char *(*pid_to_exec_file) (int pid);
};
extern struct target_ops *the_target;
#define myattach(pid) \
(*the_target->attach) (pid)
-#define kill_inferior() \
- (*the_target->kill) ()
+int kill_inferior (int);
-#define detach_inferior() \
- (*the_target->detach) ()
+#define target_supports_fork_events() \
+ (the_target->supports_fork_events ? \
+ (*the_target->supports_fork_events) () : 0)
-#define mythread_alive(pid) \
- (*the_target->thread_alive) (pid)
+#define target_supports_vfork_events() \
+ (the_target->supports_vfork_events ? \
+ (*the_target->supports_vfork_events) () : 0)
-#define fetch_inferior_registers(regno) \
- (*the_target->fetch_registers) (regno)
+#define detach_inferior(pid) \
+ (*the_target->detach) (pid)
-#define store_inferior_registers(regno) \
- (*the_target->store_registers) (regno)
+#define mourn_inferior(PROC) \
+ (*the_target->mourn) (PROC)
-#define join_inferior() \
- (*the_target->join) ()
+#define mythread_alive(pid) \
+ (*the_target->thread_alive) (pid)
-unsigned char mywait (char *statusp, int connected_wait);
+#define fetch_inferior_registers(regcache, regno) \
+ (*the_target->fetch_registers) (regcache, regno)
+
+#define store_inferior_registers(regcache, regno) \
+ (*the_target->store_registers) (regcache, regno)
+
+#define join_inferior(pid) \
+ (*the_target->join) (pid)
+
+#define target_supports_non_stop() \
+ (the_target->supports_non_stop ? (*the_target->supports_non_stop ) () : 0)
+
+#define target_async(enable) \
+ (the_target->async ? (*the_target->async) (enable) : 0)
+
+#define target_supports_multi_process() \
+ (the_target->supports_multi_process ? \
+ (*the_target->supports_multi_process) () : 0)
+
+#define target_process_qsupported(query) \
+ do \
+ { \
+ if (the_target->process_qsupported) \
+ the_target->process_qsupported (query); \
+ } while (0)
+
+#define target_supports_tracepoints() \
+ (the_target->supports_tracepoints \
+ ? (*the_target->supports_tracepoints) () : 0)
+
+#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)
+
+#define pause_all(freeze) \
+ do \
+ { \
+ if (the_target->pause_all) \
+ (*the_target->pause_all) (freeze); \
+ } while (0)
+
+#define unpause_all(unfreeze) \
+ do \
+ { \
+ if (the_target->unpause_all) \
+ (*the_target->unpause_all) (unfreeze); \
+ } while (0)
+
+#define stabilize_threads() \
+ do \
+ { \
+ if (the_target->stabilize_threads) \
+ (*the_target->stabilize_threads) (); \
+ } while (0)
+
+#define 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, \
+ 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, \
+ 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, conf) \
+ (*the_target->enable_btrace) (ptid, conf)
+
+#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_read_btrace_conf(tinfo, buffer) \
+ (*the_target->read_btrace_conf) (tinfo, buffer)
+
+#define target_supports_range_stepping() \
+ (the_target->supports_range_stepping ? \
+ (*the_target->supports_range_stepping) () : 0)
+
+#define target_supports_stopped_by_sw_breakpoint() \
+ (the_target->supports_stopped_by_sw_breakpoint ? \
+ (*the_target->supports_stopped_by_sw_breakpoint) () : 0)
+
+#define target_stopped_by_sw_breakpoint() \
+ (the_target->stopped_by_sw_breakpoint ? \
+ (*the_target->stopped_by_sw_breakpoint) () : 0)
+
+#define target_supports_stopped_by_hw_breakpoint() \
+ (the_target->supports_stopped_by_hw_breakpoint ? \
+ (*the_target->supports_stopped_by_hw_breakpoint) () : 0)
+
+#define target_supports_conditional_breakpoints() \
+ (the_target->supports_conditional_breakpoints ? \
+ (*the_target->supports_conditional_breakpoints) () : 0)
+
+#define target_stopped_by_hw_breakpoint() \
+ (the_target->stopped_by_hw_breakpoint ? \
+ (*the_target->stopped_by_hw_breakpoint) () : 0)
+
+/* Start non-stop mode, returns 0 on success, -1 on failure. */
+
+int start_non_stop (int nonstop);
+
+ptid_t mywait (ptid_t ptid, struct target_waitstatus *ourstatus, int options,
+ int connected_wait);
+
+#define prepare_to_access_memory() \
+ (the_target->prepare_to_access_memory \
+ ? (*the_target->prepare_to_access_memory) () \
+ : 0)
+
+#define done_accessing_memory() \
+ do \
+ { \
+ if (the_target->done_accessing_memory) \
+ (*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);
#endif /* TARGET_H */
projects / deliverable / binutils-gdb.git / blobdiff