#include <sys/uio.h>
#include "gdbsupport/filestuff.h"
#include "tracepoint.h"
-#include "hostio.h"
#include <inttypes.h>
#include "gdbsupport/common-inferior.h"
#include "nat/fork-inferior.h"
#endif
#endif
+#if (defined(__UCLIBC__) \
+ && defined(HAS_NOMMU) \
+ && defined(PT_TEXT_ADDR) \
+ && defined(PT_DATA_ADDR) \
+ && defined(PT_TEXT_END_ADDR))
+#define SUPPORTS_READ_OFFSETS
+#endif
+
#ifdef HAVE_LINUX_BTRACE
# include "nat/linux-btrace.h"
# include "gdbsupport/btrace-common.h"
static void linux_resume_one_lwp (struct lwp_info *lwp,
int step, int signal, siginfo_t *info);
-static void linux_resume (struct thread_resume *resume_info, size_t n);
static void stop_all_lwps (int suspend, struct lwp_info *except);
static void unstop_all_lwps (int unsuspend, struct lwp_info *except);
static void unsuspend_all_lwps (struct lwp_info *except);
int *wstat, int options);
static int linux_wait_for_event (ptid_t ptid, int *wstat, int options);
static struct lwp_info *add_lwp (ptid_t ptid);
-static void linux_mourn (struct process_info *process);
-static int linux_stopped_by_watchpoint (void);
static void mark_lwp_dead (struct lwp_info *lwp, int wstat);
static int lwp_is_marked_dead (struct lwp_info *lwp);
static void proceed_all_lwps (void);
syscalls_to_catch = std::move (proc->syscalls_to_catch);
/* Delete the execing process and all its threads. */
- linux_mourn (proc);
+ the_target->pt->mourn (proc);
current_thread = NULL;
/* Create a new process/lwp/thread. */
/* Attach to PID. If PID is the tgid, attach to it and all
of its threads. */
-static int
-linux_attach (unsigned long pid)
+int
+linux_process_target::attach (unsigned long pid)
{
struct process_info *proc;
struct thread_info *initial_thread;
kill_wait_lwp (lwp);
}
-static int
-linux_kill (process_info *process)
+int
+linux_process_target::kill (process_info *process)
{
int pid = process->pid;
else
kill_wait_lwp (lwp);
- the_target->mourn (process);
+ mourn (process);
/* Since we presently can only stop all lwps of all processes, we
need to unstop lwps of other processes. */
linux_detach_one_lwp (lwp);
}
-static int
-linux_detach (process_info *process)
+int
+linux_process_target::detach (process_info *process)
{
struct lwp_info *main_lwp;
#endif
/* Stabilize threads (move out of jump pads). */
- stabilize_threads ();
+ target_stabilize_threads ();
/* Detach from the clone lwps first. If the thread group exits just
while we're detaching, we must reap the clone lwps before we're
main_lwp = find_lwp_pid (ptid_t (process->pid));
linux_detach_one_lwp (main_lwp);
- the_target->mourn (process);
+ mourn (process);
/* Since we presently can only stop all lwps of all processes, we
need to unstop lwps of other processes. */
/* Remove all LWPs that belong to process PROC from the lwp list. */
-static void
-linux_mourn (struct process_info *process)
+void
+linux_process_target::mourn (process_info *process)
{
struct process_info_private *priv;
remove_process (process);
}
-static void
-linux_join (int pid)
+void
+linux_process_target::join (int pid)
{
int status, ret;
} while (ret != -1 || errno != ECHILD);
}
-/* Return nonzero if the given thread is still alive. */
-static int
-linux_thread_alive (ptid_t ptid)
+/* Return true if the given thread is still alive. */
+
+bool
+linux_process_target::thread_alive (ptid_t ptid)
{
struct lwp_info *lwp = find_lwp_pid (ptid);
since for something else in the new run, the thread would now
execute the wrong / random instructions. */
-static void
-linux_stabilize_threads (void)
+void
+linux_process_target::stabilize_threads ()
{
thread_info *thread_stuck = find_thread (stuck_in_jump_pad_callback);
/* Stabilize threads (move out of jump pads). */
if (!non_stop)
- stabilize_threads ();
+ target_stabilize_threads ();
}
else
{
be awakened anyway. */
}
-static ptid_t
-linux_wait (ptid_t ptid,
- struct target_waitstatus *ourstatus, int target_options)
+ptid_t
+linux_process_target::wait (ptid_t ptid,
+ target_waitstatus *ourstatus,
+ int target_options)
{
ptid_t event_ptid;
&wstat, __WALL);
gdb_assert (ret == -1);
- if (saved_thread == NULL || linux_thread_alive (saved_tid))
+ if (saved_thread == NULL || mythread_alive (saved_tid))
current_thread = saved_thread;
else
{
lwp->resume = NULL;
}
-static void
-linux_resume (struct thread_resume *resume_info, size_t n)
+void
+linux_process_target::resume (thread_resume *resume_info, size_t n)
{
struct thread_info *need_step_over = NULL;
#endif
-static void
-linux_fetch_registers (struct regcache *regcache, int regno)
+void
+linux_process_target::fetch_registers (regcache *regcache, int regno)
{
int use_regsets;
int all = 0;
}
}
-static void
-linux_store_registers (struct regcache *regcache, int regno)
+void
+linux_process_target::store_registers (regcache *regcache, int regno)
{
int use_regsets;
int all = 0;
}
-/* Copy LEN bytes from inferior's memory starting at MEMADDR
- to debugger memory starting at MYADDR. */
+/* A wrapper for the read_memory target op. */
static int
linux_read_memory (CORE_ADDR memaddr, unsigned char *myaddr, int len)
+{
+ return the_target->pt->read_memory (memaddr, myaddr, len);
+}
+
+/* Copy LEN bytes from inferior's memory starting at MEMADDR
+ to debugger memory starting at MYADDR. */
+
+int
+linux_process_target::read_memory (CORE_ADDR memaddr,
+ unsigned char *myaddr, int len)
{
int pid = lwpid_of (current_thread);
PTRACE_XFER_TYPE *buffer;
memory at MEMADDR. On failure (cannot write to the inferior)
returns the value of errno. Always succeeds if LEN is zero. */
-static int
-linux_write_memory (CORE_ADDR memaddr, const unsigned char *myaddr, int len)
+int
+linux_process_target::write_memory (CORE_ADDR memaddr,
+ const unsigned char *myaddr, int len)
{
int i;
/* Round starting address down to longword boundary. */
return 0;
}
-static void
-linux_look_up_symbols (void)
+void
+linux_process_target::look_up_symbols ()
{
#ifdef USE_THREAD_DB
struct process_info *proc = current_process ();
#endif
}
-static void
-linux_request_interrupt (void)
+void
+linux_process_target::request_interrupt ()
{
/* Send a SIGINT to the process group. This acts just like the user
typed a ^C on the controlling terminal. */
- kill (-signal_pid, SIGINT);
+ ::kill (-signal_pid, SIGINT);
+}
+
+bool
+linux_process_target::supports_read_auxv ()
+{
+ return true;
}
/* Copy LEN bytes from inferior's auxiliary vector starting at OFFSET
to debugger memory starting at MYADDR. */
-static int
-linux_read_auxv (CORE_ADDR offset, unsigned char *myaddr, unsigned int len)
+int
+linux_process_target::read_auxv (CORE_ADDR offset, unsigned char *myaddr,
+ unsigned int len)
{
char filename[PATH_MAX];
int fd, n;
pass on the function call if the target has registered a
corresponding function. */
-static int
-linux_supports_z_point_type (char z_type)
+bool
+linux_process_target::supports_z_point_type (char z_type)
{
return (the_low_target.supports_z_point_type != NULL
&& the_low_target.supports_z_point_type (z_type));
}
-static int
-linux_insert_point (enum raw_bkpt_type type, CORE_ADDR addr,
- int size, struct raw_breakpoint *bp)
+int
+linux_process_target::insert_point (enum raw_bkpt_type type, CORE_ADDR addr,
+ int size, raw_breakpoint *bp)
{
if (type == raw_bkpt_type_sw)
return insert_memory_breakpoint (bp);
return 1;
}
-static int
-linux_remove_point (enum raw_bkpt_type type, CORE_ADDR addr,
- int size, struct raw_breakpoint *bp)
+int
+linux_process_target::remove_point (enum raw_bkpt_type type, CORE_ADDR addr,
+ int size, raw_breakpoint *bp)
{
if (type == raw_bkpt_type_sw)
return remove_memory_breakpoint (bp);
return 1;
}
-/* Implement the to_stopped_by_sw_breakpoint target_ops
+/* Implement the stopped_by_sw_breakpoint target_ops
method. */
-static int
-linux_stopped_by_sw_breakpoint (void)
+bool
+linux_process_target::stopped_by_sw_breakpoint ()
{
struct lwp_info *lwp = get_thread_lwp (current_thread);
return (lwp->stop_reason == TARGET_STOPPED_BY_SW_BREAKPOINT);
}
-/* Implement the to_supports_stopped_by_sw_breakpoint target_ops
+/* Implement the supports_stopped_by_sw_breakpoint target_ops
method. */
-static int
-linux_supports_stopped_by_sw_breakpoint (void)
+bool
+linux_process_target::supports_stopped_by_sw_breakpoint ()
{
return USE_SIGTRAP_SIGINFO;
}
-/* Implement the to_stopped_by_hw_breakpoint target_ops
+/* Implement the stopped_by_hw_breakpoint target_ops
method. */
-static int
-linux_stopped_by_hw_breakpoint (void)
+bool
+linux_process_target::stopped_by_hw_breakpoint ()
{
struct lwp_info *lwp = get_thread_lwp (current_thread);
return (lwp->stop_reason == TARGET_STOPPED_BY_HW_BREAKPOINT);
}
-/* Implement the to_supports_stopped_by_hw_breakpoint target_ops
+/* Implement the supports_stopped_by_hw_breakpoint target_ops
method. */
-static int
-linux_supports_stopped_by_hw_breakpoint (void)
+bool
+linux_process_target::supports_stopped_by_hw_breakpoint ()
{
return USE_SIGTRAP_SIGINFO;
}
/* Implement the supports_hardware_single_step target_ops method. */
-static int
-linux_supports_hardware_single_step (void)
+bool
+linux_process_target::supports_hardware_single_step ()
{
return can_hardware_single_step ();
}
return can_software_single_step ();
}
-static int
-linux_stopped_by_watchpoint (void)
+bool
+linux_process_target::stopped_by_watchpoint ()
{
struct lwp_info *lwp = get_thread_lwp (current_thread);
return lwp->stop_reason == TARGET_STOPPED_BY_WATCHPOINT;
}
-static CORE_ADDR
-linux_stopped_data_address (void)
+CORE_ADDR
+linux_process_target::stopped_data_address ()
{
struct lwp_info *lwp = get_thread_lwp (current_thread);
return lwp->stopped_data_address;
}
-#if defined(__UCLIBC__) && defined(HAS_NOMMU) \
- && defined(PT_TEXT_ADDR) && defined(PT_DATA_ADDR) \
- && defined(PT_TEXT_END_ADDR)
-
/* This is only used for targets that define PT_TEXT_ADDR,
PT_DATA_ADDR and PT_TEXT_END_ADDR. If those are not defined, supposedly
the target has different ways of acquiring this information, like
loadmaps. */
+bool
+linux_process_target::supports_read_offsets ()
+{
+#ifdef SUPPORTS_READ_OFFSETS
+ return true;
+#else
+ return false;
+#endif
+}
+
/* Under uClinux, programs are loaded at non-zero offsets, which we need
to tell gdb about. */
-static int
-linux_read_offsets (CORE_ADDR *text_p, CORE_ADDR *data_p)
+int
+linux_process_target::read_offsets (CORE_ADDR *text_p, CORE_ADDR *data_p)
{
+#ifdef SUPPORTS_READ_OFFSETS
unsigned long text, text_end, data;
int pid = lwpid_of (current_thread);
return 1;
}
- return 0;
+ return 0;
+#else
+ gdb_assert_not_reached ("target op read_offsets not supported");
+#endif
}
+
+bool
+linux_process_target::supports_get_tls_address ()
+{
+#ifdef USE_THREAD_DB
+ return true;
+#else
+ return false;
#endif
+}
-static int
-linux_qxfer_osdata (const char *annex,
- unsigned char *readbuf, unsigned const char *writebuf,
- CORE_ADDR offset, int len)
+int
+linux_process_target::get_tls_address (thread_info *thread,
+ CORE_ADDR offset,
+ CORE_ADDR load_module,
+ CORE_ADDR *address)
+{
+#ifdef USE_THREAD_DB
+ return thread_db_get_tls_address (thread, offset, load_module, address);
+#else
+ return -1;
+#endif
+}
+
+bool
+linux_process_target::supports_qxfer_osdata ()
+{
+ return true;
+}
+
+int
+linux_process_target::qxfer_osdata (const char *annex,
+ unsigned char *readbuf,
+ unsigned const char *writebuf,
+ CORE_ADDR offset, int len)
{
return linux_common_xfer_osdata (annex, readbuf, offset, len);
}
}
}
-static int
-linux_xfer_siginfo (const char *annex, unsigned char *readbuf,
- unsigned const char *writebuf, CORE_ADDR offset, int len)
+bool
+linux_process_target::supports_qxfer_siginfo ()
+{
+ return true;
+}
+
+int
+linux_process_target::qxfer_siginfo (const char *annex,
+ unsigned char *readbuf,
+ unsigned const char *writebuf,
+ CORE_ADDR offset, int len)
{
int pid;
siginfo_t siginfo;
errno = old_errno;
}
-static int
-linux_supports_non_stop (void)
+bool
+linux_process_target::supports_non_stop ()
{
- return 1;
+ return true;
}
-static int
-linux_async (int enable)
+bool
+linux_process_target::async (bool enable)
{
- int previous = target_is_async_p ();
+ bool previous = target_is_async_p ();
if (debug_threads)
debug_printf ("linux_async (%d), previous=%d\n",
return previous;
}
-static int
-linux_start_non_stop (int nonstop)
+int
+linux_process_target::start_non_stop (bool nonstop)
{
/* Register or unregister from event-loop accordingly. */
- linux_async (nonstop);
+ target_async (nonstop);
- if (target_is_async_p () != (nonstop != 0))
+ if (target_is_async_p () != (nonstop != false))
return -1;
return 0;
}
-static int
-linux_supports_multi_process (void)
+bool
+linux_process_target::supports_multi_process ()
{
- return 1;
+ return true;
}
/* Check if fork events are supported. */
-static int
-linux_supports_fork_events (void)
+bool
+linux_process_target::supports_fork_events ()
{
return linux_supports_tracefork ();
}
/* Check if vfork events are supported. */
-static int
-linux_supports_vfork_events (void)
+bool
+linux_process_target::supports_vfork_events ()
{
return linux_supports_tracefork ();
}
/* Check if exec events are supported. */
-static int
-linux_supports_exec_events (void)
+bool
+linux_process_target::supports_exec_events ()
{
return linux_supports_traceexec ();
}
ptrace flags for all inferiors. This is in case the new GDB connection
doesn't support the same set of events that the previous one did. */
-static void
-linux_handle_new_gdb_connection (void)
+void
+linux_process_target::handle_new_gdb_connection ()
{
/* Request that all the lwps reset their ptrace options. */
for_each_thread ([] (thread_info *thread)
});
}
+int
+linux_process_target::handle_monitor_command (char *mon)
+{
+#ifdef USE_THREAD_DB
+ return thread_db_handle_monitor_command (mon);
+#else
+ return 0;
+#endif
+}
+
+int
+linux_process_target::core_of_thread (ptid_t ptid)
+{
+ return linux_common_core_of_thread (ptid);
+}
+
static int
linux_supports_disable_randomization (void)
{
# define LINUX_LOADMAP_INTERP PTRACE_GETFDPIC_INTERP
# endif
-static int
-linux_read_loadmap (const char *annex, CORE_ADDR offset,
- unsigned char *myaddr, unsigned int len)
+bool
+linux_process_target::supports_read_loadmap ()
+{
+ return true;
+}
+
+int
+linux_process_target::read_loadmap (const char *annex, CORE_ADDR offset,
+ unsigned char *myaddr, unsigned int len)
{
int pid = lwpid_of (current_thread);
int addr = -1;
memcpy (myaddr, (char *) data + offset, copy_length);
return copy_length;
}
-#else
-# define linux_read_loadmap NULL
#endif /* defined PT_GETDSBT || defined PTRACE_GETFDPIC */
-static void
-linux_process_qsupported (char **features, int count)
+void
+linux_process_target::process_qsupported (char **features, int count)
{
if (the_low_target.process_qsupported != NULL)
the_low_target.process_qsupported (features, count);
return (*the_low_target.get_ipa_tdesc_idx) ();
}
-static int
-linux_supports_tracepoints (void)
+bool
+linux_process_target::supports_tracepoints ()
{
if (*the_low_target.supports_tracepoints == NULL)
- return 0;
+ return false;
return (*the_low_target.supports_tracepoints) ();
}
-static CORE_ADDR
-linux_read_pc (struct regcache *regcache)
+CORE_ADDR
+linux_process_target::read_pc (regcache *regcache)
{
if (the_low_target.get_pc == NULL)
return 0;
return (*the_low_target.get_pc) (regcache);
}
-static void
-linux_write_pc (struct regcache *regcache, CORE_ADDR pc)
+void
+linux_process_target::write_pc (regcache *regcache, CORE_ADDR pc)
{
gdb_assert (the_low_target.set_pc != NULL);
(*the_low_target.set_pc) (regcache, pc);
}
-static int
-linux_thread_stopped (struct thread_info *thread)
+bool
+linux_process_target::supports_thread_stopped ()
+{
+ return true;
+}
+
+bool
+linux_process_target::thread_stopped (thread_info *thread)
{
return get_thread_lwp (thread)->stopped;
}
/* This exposes stop-all-threads functionality to other modules. */
-static void
-linux_pause_all (int freeze)
+void
+linux_process_target::pause_all (bool freeze)
{
stop_all_lwps (freeze, NULL);
}
/* This exposes unstop-all-threads functionality to other gdbserver
modules. */
-static void
-linux_unpause_all (int unfreeze)
+void
+linux_process_target::unpause_all (bool unfreeze)
{
unstop_all_lwps (unfreeze, NULL);
}
-static int
-linux_prepare_to_access_memory (void)
+int
+linux_process_target::prepare_to_access_memory ()
{
/* Neither ptrace nor /proc/PID/mem allow accessing memory through a
running LWP. */
if (non_stop)
- linux_pause_all (1);
+ target_pause_all (true);
return 0;
}
-static void
-linux_done_accessing_memory (void)
+void
+linux_process_target::done_accessing_memory ()
{
/* Neither ptrace nor /proc/PID/mem allow accessing memory through a
running LWP. */
if (non_stop)
- linux_unpause_all (1);
+ target_unpause_all (true);
}
-static int
-linux_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)
+bool
+linux_process_target::supports_fast_tracepoints ()
+{
+ return the_low_target.install_fast_tracepoint_jump_pad != nullptr;
+}
+
+int
+linux_process_target::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_low_target.install_fast_tracepoint_jump_pad)
(tpoint, tpaddr, collector, lockaddr, orig_size,
return NULL;
}
-static int
-linux_get_min_fast_tracepoint_insn_len (void)
+int
+linux_process_target::get_min_fast_tracepoint_insn_len ()
{
return (*the_low_target.get_min_fast_tracepoint_insn_len) ();
}
gdb_assert (wordsize == 4 || wordsize == 8);
- while ((*the_target->read_auxv) (offset, data, 2 * wordsize) == 2 * wordsize)
+ while (the_target->pt->read_auxv (offset, data, 2 * wordsize) == 2 * wordsize)
{
if (wordsize == 4)
{
static linux_process_target the_linux_target;
static process_stratum_target linux_target_ops = {
- linux_attach,
- linux_kill,
- linux_detach,
- linux_mourn,
- linux_join,
- linux_thread_alive,
- linux_resume,
- linux_wait,
- linux_fetch_registers,
- linux_store_registers,
- linux_prepare_to_access_memory,
- linux_done_accessing_memory,
- linux_read_memory,
- linux_write_memory,
- linux_look_up_symbols,
- linux_request_interrupt,
- linux_read_auxv,
- linux_supports_z_point_type,
- linux_insert_point,
- linux_remove_point,
- linux_stopped_by_sw_breakpoint,
- linux_supports_stopped_by_sw_breakpoint,
- linux_stopped_by_hw_breakpoint,
- linux_supports_stopped_by_hw_breakpoint,
- linux_supports_hardware_single_step,
- linux_stopped_by_watchpoint,
- linux_stopped_data_address,
-#if defined(__UCLIBC__) && defined(HAS_NOMMU) \
- && defined(PT_TEXT_ADDR) && defined(PT_DATA_ADDR) \
- && defined(PT_TEXT_END_ADDR)
- linux_read_offsets,
-#else
- NULL,
-#endif
-#ifdef USE_THREAD_DB
- thread_db_get_tls_address,
-#else
- NULL,
-#endif
- hostio_last_error_from_errno,
- linux_qxfer_osdata,
- linux_xfer_siginfo,
- linux_supports_non_stop,
- linux_async,
- linux_start_non_stop,
- linux_supports_multi_process,
- linux_supports_fork_events,
- linux_supports_vfork_events,
- linux_supports_exec_events,
- linux_handle_new_gdb_connection,
-#ifdef USE_THREAD_DB
- thread_db_handle_monitor_command,
-#else
- NULL,
-#endif
- linux_common_core_of_thread,
- linux_read_loadmap,
- linux_process_qsupported,
- linux_supports_tracepoints,
- linux_read_pc,
- linux_write_pc,
- linux_thread_stopped,
- NULL,
- linux_pause_all,
- linux_unpause_all,
- linux_stabilize_threads,
- linux_install_fast_tracepoint_jump_pad,
linux_emit_ops,
linux_supports_disable_randomization,
- linux_get_min_fast_tracepoint_insn_len,
linux_qxfer_libraries_svr4,
linux_supports_agent,
#ifdef HAVE_LINUX_BTRACE
projects / deliverable / binutils-gdb.git / blobdiff