#include "symtab.h"
#include "frame.h"
#include "inferior.h"
+#include "exceptions.h"
#include "breakpoint.h"
#include "gdb_wait.h"
#include "gdbcore.h"
#include "value.h"
#include "observer.h"
#include "language.h"
+#include "solib.h"
+
#include "gdb_assert.h"
/* Prototypes for local functions */
no line number information. The normal behavior is that we step
over such function. */
int step_stop_if_no_debug = 0;
+static void
+show_step_stop_if_no_debug (struct ui_file *file, int from_tty,
+ struct cmd_list_element *c, const char *value)
+{
+ fprintf_filtered (file, _("Mode of the step operation is %s.\n"), value);
+}
/* In asynchronous mode, but simulating synchronous execution. */
static int may_follow_exec = MAY_FOLLOW_EXEC;
+static int debug_infrun = 0;
+static void
+show_debug_infrun (struct ui_file *file, int from_tty,
+ struct cmd_list_element *c, const char *value)
+{
+ fprintf_filtered (file, _("Inferior debugging is %s.\n"), value);
+}
+
/* If the program uses ELF-style shared libraries, then calls to
functions in shared libraries go through stubs, which live in a
table called the PLT (Procedure Linkage Table). The first time the
signalling an error, which will obscure the change in the
inferior's state. */
-#ifndef IN_SOLIB_DYNSYM_RESOLVE_CODE
-#define IN_SOLIB_DYNSYM_RESOLVE_CODE(pc) 0
-#endif
-
/* This function returns TRUE if pc is the address of an instruction
that lies within the dynamic linker (such as the event hook, or the
dld itself).
#define SOLIB_IN_DYNAMIC_LINKER(pid,pc) 0
#endif
-/* On some systems, the PC may be left pointing at an instruction that won't
- actually be executed. This is usually indicated by a bit in the PSW. If
- we find ourselves in such a state, then we step the target beyond the
- nullified instruction before returning control to the user so as to avoid
- confusion. */
-
-#ifndef INSTRUCTION_NULLIFIED
-#define INSTRUCTION_NULLIFIED 0
-#endif
-
/* We can't step off a permanent breakpoint in the ordinary way, because we
can't remove it. Instead, we have to advance the PC to the next
instruction. This macro should expand to a pointer to a function that
static void
default_skip_permanent_breakpoint (void)
{
- error ("\
+ error (_("\
The program is stopped at a permanent breakpoint, but GDB does not know\n\
how to step past a permanent breakpoint on this architecture. Try using\n\
-a command like `return' or `jump' to continue execution.");
+a command like `return' or `jump' to continue execution."));
}
#endif
static int trap_expected;
-#ifdef SOLIB_ADD
/* Nonzero if we want to give control to the user when we're notified
of shared library events by the dynamic linker. */
static int stop_on_solib_events;
-#endif
+static void
+show_stop_on_solib_events (struct ui_file *file, int from_tty,
+ struct cmd_list_element *c, const char *value)
+{
+ fprintf_filtered (file, _("Stopping for shared library events is %s.\n"),
+ value);
+}
/* Nonzero means expecting a trace trap
and should stop the inferior and return silently when it happens. */
static struct breakpoint *step_resume_breakpoint = NULL;
-/* On some platforms (e.g., HP-UX), hardware watchpoints have bad
- interactions with an inferior that is running a kernel function
- (aka, a system call or "syscall"). wait_for_inferior therefore
- may have a need to know when the inferior is in a syscall. This
- is a count of the number of inferior threads which are known to
- currently be running in a syscall. */
-static int number_of_threads_in_syscalls;
-
/* This is a cached copy of the pid/waitstatus of the last event
returned by target_wait()/deprecated_target_wait_hook(). This
information is returned by get_last_target_status(). */
};
static const char *follow_fork_mode_string = follow_fork_mode_parent;
+static void
+show_follow_fork_mode_string (struct ui_file *file, int from_tty,
+ struct cmd_list_element *c, const char *value)
+{
+ fprintf_filtered (file, _("\
+Debugger response to a program call of fork or vfork is \"%s\".\n"),
+ value);
+}
\f
static int
step_range_end = 0;
/* What is this a.out's name? */
- printf_unfiltered ("Executing new program: %s\n", execd_pathname);
+ printf_unfiltered (_("Executing new program: %s\n"), execd_pathname);
/* We've followed the inferior through an exec. Therefore, the
inferior has essentially been killed & reborn. */
tgt = find_run_target ();
/* If we can't find one, things are in a very strange state... */
if (tgt == NULL)
- error ("Could find run target to save before following exec");
+ error (_("Could find run target to save before following exec"));
gdb_flush (gdb_stdout);
target_mourn_inferior ();
#endif
#ifdef SOLIB_CREATE_INFERIOR_HOOK
SOLIB_CREATE_INFERIOR_HOOK (PIDGET (inferior_ptid));
+#else
+ solib_create_inferior_hook ();
#endif
/* Reinsert all breakpoints. (Those which were symbolic have
static const char schedlock_off[] = "off";
static const char schedlock_on[] = "on";
static const char schedlock_step[] = "step";
-static const char *scheduler_mode = schedlock_off;
static const char *scheduler_enums[] = {
schedlock_off,
schedlock_on,
schedlock_step,
NULL
};
+static const char *scheduler_mode = schedlock_off;
+static void
+show_scheduler_mode (struct ui_file *file, int from_tty,
+ struct cmd_list_element *c, const char *value)
+{
+ fprintf_filtered (file, _("\
+Mode for locking scheduler during execution is \"%s\".\n"),
+ value);
+}
static void
set_schedlock_func (char *args, int from_tty, struct cmd_list_element *c)
{
- /* NOTE: cagney/2002-03-17: The deprecated_add_show_from_set()
- function clones the set command passed as a parameter. The clone
- operation will include (BUG?) any ``set'' command callback, if
- present. Commands like ``info set'' call all the ``show''
- command callbacks. Unfortunately, for ``show'' commands cloned
- from ``set'', this includes callbacks belonging to ``set''
- commands. Making this worse, this only occures if
- deprecated_add_show_from_set() is called after add_cmd_sfunc()
- (BUG?). */
- if (cmd_type (c) == set_cmd)
- if (!target_can_lock_scheduler)
- {
- scheduler_mode = schedlock_off;
- error ("Target '%s' cannot support this command.", target_shortname);
- }
+ if (!target_can_lock_scheduler)
+ {
+ scheduler_mode = schedlock_off;
+ error (_("Target '%s' cannot support this command."), target_shortname);
+ }
}
struct cleanup *old_cleanups = make_cleanup (resume_cleanups, 0);
QUIT;
+ if (debug_infrun)
+ fprintf_unfiltered (gdb_stdlog, "infrun: resume (step=%d, signal=%d)\n",
+ step, sig);
+
/* FIXME: calling breakpoint_here_p (read_pc ()) three times! */
if (addr == (CORE_ADDR) -1)
{
- /* If there is a breakpoint at the address we will resume at,
- step one instruction before inserting breakpoints
- so that we do not stop right away (and report a second
- hit at this breakpoint). */
-
if (read_pc () == stop_pc && breakpoint_here_p (read_pc ()))
+ /* There is a breakpoint at the address we will resume at,
+ step one instruction before inserting breakpoints so that
+ we do not stop right away (and report a second hit at this
+ breakpoint). */
oneproc = 1;
-
-#ifndef STEP_SKIPS_DELAY
-#define STEP_SKIPS_DELAY(pc) (0)
-#define STEP_SKIPS_DELAY_P (0)
-#endif
- /* Check breakpoint_here_p first, because breakpoint_here_p is fast
- (it just checks internal GDB data structures) and STEP_SKIPS_DELAY
- is slow (it needs to read memory from the target). */
- if (STEP_SKIPS_DELAY_P
- && breakpoint_here_p (read_pc () + 4)
- && STEP_SKIPS_DELAY (read_pc ()))
+ else if (gdbarch_single_step_through_delay_p (current_gdbarch)
+ && gdbarch_single_step_through_delay (current_gdbarch,
+ get_current_frame ()))
+ /* We stepped onto an instruction that needs to be stepped
+ again before re-inserting the breakpoint, do so. */
oneproc = 1;
}
else
write_pc (addr);
}
+ if (debug_infrun)
+ fprintf_unfiltered (gdb_stdlog,
+ "infrun: proceed (addr=0x%s, signal=%d, step=%d)\n",
+ paddr_nz (addr), siggnal, step);
+
/* In a multi-threaded task we may select another thread
and then continue or step.
/* The first resume is not following a fork/vfork/exec. */
pending_follow.kind = TARGET_WAITKIND_SPURIOUS; /* I.e., none. */
- /* See wait_for_inferior's handling of SYSCALL_ENTRY/RETURN events. */
- number_of_threads_in_syscalls = 0;
-
clear_proceed_status ();
stepping_past_singlestep_breakpoint = 0;
{
infwait_normal_state,
infwait_thread_hop_state,
- infwait_nullified_state,
infwait_nonstep_watch_state
};
int step_after_step_resume_breakpoint;
int stepping_through_solib_after_catch;
bpstat stepping_through_solib_catchpoints;
- int enable_hw_watchpoints_after_wait;
int new_thread_event;
struct target_waitstatus tmpstatus;
enum infwait_states infwait_state;
struct execution_control_state ecss;
struct execution_control_state *ecs;
+ if (debug_infrun)
+ fprintf_unfiltered (gdb_stdlog, "infrun: wait_for_inferior\n");
+
old_cleanups = make_cleanup (delete_step_resume_breakpoint,
&step_resume_breakpoint);
ecs->handling_longjmp = 0; /* FIXME */
ecs->stepping_through_solib_after_catch = 0;
ecs->stepping_through_solib_catchpoints = NULL;
- ecs->enable_hw_watchpoints_after_wait = 0;
ecs->sal = find_pc_line (prev_pc, 0);
ecs->current_line = ecs->sal.line;
ecs->current_symtab = ecs->sal.symtab;
void
handle_inferior_event (struct execution_control_state *ecs)
{
- /* NOTE: cagney/2003-03-28: If you're looking at this code and
- thinking that the variable stepped_after_stopped_by_watchpoint
- isn't used, then you're wrong! The macro STOPPED_BY_WATCHPOINT,
- defined in the file "config/pa/nm-hppah.h", accesses the variable
- indirectly. Mutter something rude about the HP merge. */
+ /* NOTE: bje/2005-05-02: If you're looking at this code and thinking
+ that the variable stepped_after_stopped_by_watchpoint isn't used,
+ then you're wrong! See remote.c:remote_stopped_data_address. */
+
int sw_single_step_trap_p = 0;
int stopped_by_watchpoint = -1; /* Mark as unknown. */
switch (ecs->infwait_state)
{
case infwait_thread_hop_state:
+ if (debug_infrun)
+ fprintf_unfiltered (gdb_stdlog, "infrun: infwait_thread_hop_state\n");
/* Cancel the waiton_ptid. */
ecs->waiton_ptid = pid_to_ptid (-1);
- /* See comments where a TARGET_WAITKIND_SYSCALL_RETURN event
- is serviced in this loop, below. */
- if (ecs->enable_hw_watchpoints_after_wait)
- {
- TARGET_ENABLE_HW_WATCHPOINTS (PIDGET (inferior_ptid));
- ecs->enable_hw_watchpoints_after_wait = 0;
- }
- stepped_after_stopped_by_watchpoint = 0;
break;
case infwait_normal_state:
- /* See comments where a TARGET_WAITKIND_SYSCALL_RETURN event
- is serviced in this loop, below. */
- if (ecs->enable_hw_watchpoints_after_wait)
- {
- TARGET_ENABLE_HW_WATCHPOINTS (PIDGET (inferior_ptid));
- ecs->enable_hw_watchpoints_after_wait = 0;
- }
- stepped_after_stopped_by_watchpoint = 0;
- break;
-
- case infwait_nullified_state:
+ if (debug_infrun)
+ fprintf_unfiltered (gdb_stdlog, "infrun: infwait_normal_state\n");
stepped_after_stopped_by_watchpoint = 0;
break;
case infwait_nonstep_watch_state:
+ if (debug_infrun)
+ fprintf_unfiltered (gdb_stdlog,
+ "infrun: infwait_nonstep_watch_state\n");
insert_breakpoints ();
/* FIXME-maybe: is this cleaner than setting a flag? Does it
break;
default:
- internal_error (__FILE__, __LINE__, "bad switch");
+ internal_error (__FILE__, __LINE__, _("bad switch"));
}
ecs->infwait_state = infwait_normal_state;
switch (ecs->ws.kind)
{
case TARGET_WAITKIND_LOADED:
+ if (debug_infrun)
+ fprintf_unfiltered (gdb_stdlog, "infrun: TARGET_WAITKIND_LOADED\n");
/* Ignore gracefully during startup of the inferior, as it
might be the shell which has just loaded some objects,
otherwise add the symbols for the newly loaded objects. */
return;
case TARGET_WAITKIND_SPURIOUS:
+ if (debug_infrun)
+ fprintf_unfiltered (gdb_stdlog, "infrun: TARGET_WAITKIND_SPURIOUS\n");
resume (0, TARGET_SIGNAL_0);
prepare_to_wait (ecs);
return;
case TARGET_WAITKIND_EXITED:
+ if (debug_infrun)
+ fprintf_unfiltered (gdb_stdlog, "infrun: TARGET_WAITKIND_EXITED\n");
target_terminal_ours (); /* Must do this before mourn anyway */
print_stop_reason (EXITED, ecs->ws.value.integer);
return;
case TARGET_WAITKIND_SIGNALLED:
+ if (debug_infrun)
+ fprintf_unfiltered (gdb_stdlog, "infrun: TARGET_WAITKIND_SIGNALLED\n");
stop_print_frame = 0;
stop_signal = ecs->ws.value.sig;
target_terminal_ours (); /* Must do this before mourn anyway */
the above cases end in a continue or goto. */
case TARGET_WAITKIND_FORKED:
case TARGET_WAITKIND_VFORKED:
+ if (debug_infrun)
+ fprintf_unfiltered (gdb_stdlog, "infrun: TARGET_WAITKIND_FORKED\n");
stop_signal = TARGET_SIGNAL_TRAP;
pending_follow.kind = ecs->ws.kind;
goto process_event_stop_test;
case TARGET_WAITKIND_EXECD:
+ if (debug_infrun)
+ fprintf_unfiltered (gdb_stdlog, "infrun: TARGET_WAITKIND_EXECED\n");
stop_signal = TARGET_SIGNAL_TRAP;
/* NOTE drow/2002-12-05: This code should be pushed down into the
}
goto process_event_stop_test;
- /* These syscall events are returned on HP-UX, as part of its
- implementation of page-protection-based "hardware" watchpoints.
- HP-UX has unfortunate interactions between page-protections and
- some system calls. Our solution is to disable hardware watches
- when a system call is entered, and reenable them when the syscall
- completes. The downside of this is that we may miss the precise
- point at which a watched piece of memory is modified. "Oh well."
-
- Note that we may have multiple threads running, which may each
- enter syscalls at roughly the same time. Since we don't have a
- good notion currently of whether a watched piece of memory is
- thread-private, we'd best not have any page-protections active
- when any thread is in a syscall. Thus, we only want to reenable
- hardware watches when no threads are in a syscall.
-
- Also, be careful not to try to gather much state about a thread
- that's in a syscall. It's frequently a losing proposition. */
+ /* Be careful not to try to gather much state about a thread
+ that's in a syscall. It's frequently a losing proposition. */
case TARGET_WAITKIND_SYSCALL_ENTRY:
- number_of_threads_in_syscalls++;
- if (number_of_threads_in_syscalls == 1)
- {
- TARGET_DISABLE_HW_WATCHPOINTS (PIDGET (inferior_ptid));
- }
+ if (debug_infrun)
+ fprintf_unfiltered (gdb_stdlog, "infrun: TARGET_WAITKIND_SYSCALL_ENTRY\n");
resume (0, TARGET_SIGNAL_0);
prepare_to_wait (ecs);
return;
get it entirely out of the syscall. (We get notice of the
event when the thread is just on the verge of exiting a
syscall. Stepping one instruction seems to get it back
- into user code.)
-
- Note that although the logical place to reenable h/w watches
- is here, we cannot. We cannot reenable them before stepping
- the thread (this causes the next wait on the thread to hang).
-
- Nor can we enable them after stepping until we've done a wait.
- Thus, we simply set the flag ecs->enable_hw_watchpoints_after_wait
- here, which will be serviced immediately after the target
- is waited on. */
+ into user code.) */
case TARGET_WAITKIND_SYSCALL_RETURN:
+ if (debug_infrun)
+ fprintf_unfiltered (gdb_stdlog, "infrun: TARGET_WAITKIND_SYSCALL_RETURN\n");
target_resume (ecs->ptid, 1, TARGET_SIGNAL_0);
-
- if (number_of_threads_in_syscalls > 0)
- {
- number_of_threads_in_syscalls--;
- ecs->enable_hw_watchpoints_after_wait =
- (number_of_threads_in_syscalls == 0);
- }
prepare_to_wait (ecs);
return;
case TARGET_WAITKIND_STOPPED:
+ if (debug_infrun)
+ fprintf_unfiltered (gdb_stdlog, "infrun: TARGET_WAITKIND_STOPPED\n");
stop_signal = ecs->ws.value.sig;
break;
circumstance is any event which the lower level knows will be
reported multiple times without an intervening resume. */
case TARGET_WAITKIND_IGNORE:
+ if (debug_infrun)
+ fprintf_unfiltered (gdb_stdlog, "infrun: TARGET_WAITKIND_IGNORE\n");
prepare_to_wait (ecs);
return;
}
stop_pc = read_pc_pid (ecs->ptid);
+ if (debug_infrun)
+ fprintf_unfiltered (gdb_stdlog, "infrun: stop_pc = 0x%s\n", paddr_nz (stop_pc));
+
if (stepping_past_singlestep_breakpoint)
{
gdb_assert (SOFTWARE_SINGLE_STEP_P ()
we could tell, but we can't reliably. */
if (stop_signal == TARGET_SIGNAL_TRAP)
{
+ if (debug_infrun)
+ fprintf_unfiltered (gdb_stdlog, "infrun: stepping_past_singlestep_breakpoint\n");
/* Pull the single step breakpoints out of the target. */
SOFTWARE_SINGLE_STEP (0, 0);
singlestep_breakpoints_inserted_p = 0;
{
int remove_status;
+ if (debug_infrun)
+ fprintf_unfiltered (gdb_stdlog, "infrun: thread_hop_needed\n");
+
/* Saw a breakpoint, but it was hit by the wrong thread.
Just continue. */
so, then switch to that thread. */
if (!ptid_equal (ecs->ptid, inferior_ptid))
{
+ if (debug_infrun)
+ fprintf_unfiltered (gdb_stdlog, "infrun: context switch\n");
+
context_switch (ecs);
if (deprecated_context_hook)
singlestep_breakpoints_inserted_p = 0;
}
- /* If PC is pointing at a nullified instruction, then step beyond
- it so that the user won't be confused when GDB appears to be ready
- to execute it. */
-
- /* if (INSTRUCTION_NULLIFIED && currently_stepping (ecs)) */
- if (INSTRUCTION_NULLIFIED)
- {
- registers_changed ();
- target_resume (ecs->ptid, 1, TARGET_SIGNAL_0);
-
- /* We may have received a signal that we want to pass to
- the inferior; therefore, we must not clobber the waitstatus
- in WS. */
-
- ecs->infwait_state = infwait_nullified_state;
- ecs->waiton_ptid = ecs->ptid;
- ecs->wp = &(ecs->tmpstatus);
- prepare_to_wait (ecs);
- return;
- }
-
/* It may not be necessary to disable the watchpoint to stop over
it. For example, the PA can (with some kernel cooperation)
single step over a watchpoint without disabling the watchpoint. */
if (HAVE_STEPPABLE_WATCHPOINT && STOPPED_BY_WATCHPOINT (ecs->ws))
{
+ if (debug_infrun)
+ fprintf_unfiltered (gdb_stdlog, "infrun: STOPPED_BY_WATCHPOINT\n");
resume (1, 0);
prepare_to_wait (ecs);
return;
includes evaluating watchpoints, things will come to a
stop in the correct manner. */
+ if (debug_infrun)
+ fprintf_unfiltered (gdb_stdlog, "infrun: STOPPED_BY_WATCHPOINT\n");
remove_breakpoints ();
registers_changed ();
target_resume (ecs->ptid, 1, TARGET_SIGNAL_0); /* Single step */
stopped_by_random_signal = 0;
breakpoints_failed = 0;
+ if (stop_signal == TARGET_SIGNAL_TRAP
+ && trap_expected
+ && gdbarch_single_step_through_delay_p (current_gdbarch)
+ && currently_stepping (ecs))
+ {
+ /* We're trying to step of a breakpoint. Turns out that we're
+ also on an instruction that needs to be stepped multiple
+ times before it's been fully executing. E.g., architectures
+ with a delay slot. It needs to be stepped twice, once for
+ the instruction and once for the delay slot. */
+ int step_through_delay
+ = gdbarch_single_step_through_delay (current_gdbarch,
+ get_current_frame ());
+ if (debug_infrun && step_through_delay)
+ fprintf_unfiltered (gdb_stdlog, "infrun: step through delay\n");
+ if (step_range_end == 0 && step_through_delay)
+ {
+ /* The user issued a continue when stopped at a breakpoint.
+ Set up for another trap and get out of here. */
+ ecs->another_trap = 1;
+ keep_going (ecs);
+ return;
+ }
+ else if (step_through_delay)
+ {
+ /* The user issued a step when stopped at a breakpoint.
+ Maybe we should stop, maybe we should not - the delay
+ slot *might* correspond to a line of source. In any
+ case, don't decide that here, just set ecs->another_trap,
+ making sure we single-step again before breakpoints are
+ re-inserted. */
+ ecs->another_trap = 1;
+ }
+ }
+
/* Look at the cause of the stop, and decide what to do.
The alternatives are:
1) break; to really stop and return to the debugger,
{
if (stop_signal == TARGET_SIGNAL_TRAP && stop_after_trap)
{
+ if (debug_infrun)
+ fprintf_unfiltered (gdb_stdlog, "infrun: stopped\n");
stop_print_frame = 0;
stop_stepping (ecs);
return;
shared libraries hook functions. */
if (stop_soon == STOP_QUIETLY)
{
+ if (debug_infrun)
+ fprintf_unfiltered (gdb_stdlog, "infrun: quietly stopped\n");
stop_stepping (ecs);
return;
}
/* Don't even think about breakpoints if just proceeded over a
breakpoint. */
if (stop_signal == TARGET_SIGNAL_TRAP && trap_expected)
- bpstat_clear (&stop_bpstat);
+ {
+ if (debug_infrun)
+ fprintf_unfiltered (gdb_stdlog, "infrun: trap expected\n");
+ bpstat_clear (&stop_bpstat);
+ }
else
{
/* See if there is a breakpoint at the current PC. */
/* Signal not for debugging purposes. */
int printed = 0;
+ if (debug_infrun)
+ fprintf_unfiltered (gdb_stdlog, "infrun: random signal %d\n", stop_signal);
+
stopped_by_random_signal = 1;
if (signal_print[stop_signal])
breakpoint. */
insert_step_resume_breakpoint_at_frame (get_current_frame ());
ecs->step_after_step_resume_breakpoint = 1;
+ keep_going (ecs);
+ return;
}
- else if (step_range_end != 0
- && stop_signal != TARGET_SIGNAL_0
- && stop_pc >= step_range_start && stop_pc < step_range_end
- && frame_id_eq (get_frame_id (get_current_frame ()),
- step_frame_id))
+
+ if (step_range_end != 0
+ && stop_signal != TARGET_SIGNAL_0
+ && stop_pc >= step_range_start && stop_pc < step_range_end
+ && frame_id_eq (get_frame_id (get_current_frame ()),
+ step_frame_id)
+ && step_resume_breakpoint == NULL)
{
/* The inferior is about to take a signal that will take it
out of the single step range. Set a breakpoint at the
while in the single-step range. Nested signals aren't a
problem as they eventually all return. */
insert_step_resume_breakpoint_at_frame (get_current_frame ());
+ keep_going (ecs);
+ return;
}
+
+ /* Note: step_resume_breakpoint may be non-NULL. This occures
+ when either there's a nested signal, or when there's a
+ pending signal enabled just as the signal handler returns
+ (leaving the inferior at the step-resume-breakpoint without
+ actually executing it). Either way continue until the
+ breakpoint is really hit. */
keep_going (ecs);
return;
}
/* If we hit the breakpoint at longjmp, disable it for the
duration of this command. Then, install a temporary
breakpoint at the target of the jmp_buf. */
+ if (debug_infrun)
+ fprintf_unfiltered (gdb_stdlog, "infrun: BPSTATE_WHAT_SET_LONGJMP_RESUME\n");
disable_longjmp_breakpoint ();
remove_breakpoints ();
breakpoints_inserted = 0;
case BPSTAT_WHAT_CLEAR_LONGJMP_RESUME:
case BPSTAT_WHAT_CLEAR_LONGJMP_RESUME_SINGLE:
+ if (debug_infrun)
+ fprintf_unfiltered (gdb_stdlog, "infrun: BPSTATE_WHAT_CLEAR_LONGJMP_RESUME\n");
remove_breakpoints ();
breakpoints_inserted = 0;
disable_longjmp_breakpoint ();
/* else fallthrough */
case BPSTAT_WHAT_SINGLE:
+ if (debug_infrun)
+ fprintf_unfiltered (gdb_stdlog, "infrun: BPSTATE_WHAT_SINGLE\n");
if (breakpoints_inserted)
{
remove_breakpoints ();
break;
case BPSTAT_WHAT_STOP_NOISY:
+ if (debug_infrun)
+ fprintf_unfiltered (gdb_stdlog, "infrun: BPSTATE_WHAT_STOP_NOISY\n");
stop_print_frame = 1;
/* We are about to nuke the step_resume_breakpointt via the
return;
case BPSTAT_WHAT_STOP_SILENT:
+ if (debug_infrun)
+ fprintf_unfiltered (gdb_stdlog, "infrun: BPSTATE_WHAT_STOP_SILENT\n");
stop_print_frame = 0;
/* We are about to nuke the step_resume_breakpoin via the
step-resume bp, but it makes no effort to ensure that
the one deleted is the one currently stopped at. MVS */
+ if (debug_infrun)
+ fprintf_unfiltered (gdb_stdlog, "infrun: BPSTATE_WHAT_STEP_RESUME\n");
+
if (step_resume_breakpoint == NULL)
{
step_resume_breakpoint =
break;
case BPSTAT_WHAT_THROUGH_SIGTRAMP:
+ if (debug_infrun)
+ fprintf_unfiltered (gdb_stdlog, "infrun: BPSTATE_WHAT_THROUGH_SIGTRAMP\n");
/* If were waiting for a trap, hitting the step_resume_break
doesn't count as getting it. */
if (trap_expected)
case BPSTAT_WHAT_CHECK_SHLIBS:
case BPSTAT_WHAT_CHECK_SHLIBS_RESUME_FROM_HOOK:
-#ifdef SOLIB_ADD
{
+ if (debug_infrun)
+ fprintf_unfiltered (gdb_stdlog, "infrun: BPSTATE_WHAT_CHECK_SHLIBS\n");
/* Remove breakpoints, we eventually want to step over the
shlib event breakpoint, and SOLIB_ADD might adjust
breakpoint addresses via breakpoint_re_set. */
exec/process stratum, instead relying on the target stack
to propagate relevant changes (stop, section table
changed, ...) up to other layers. */
+#ifdef SOLIB_ADD
SOLIB_ADD (NULL, 0, ¤t_target, auto_solib_add);
+#else
+ solib_add (NULL, 0, ¤t_target, auto_solib_add);
+#endif
target_terminal_inferior ();
/* Try to reenable shared library breakpoints, additional
break;
}
}
-#endif
break;
case BPSTAT_WHAT_LAST:
test for stepping. But, if not stepping,
do not stop. */
- /* Are we stepping to get the inferior out of the dynamic
- linker's hook (and possibly the dld itself) after catching
- a shlib event? */
+ /* Are we stepping to get the inferior out of the dynamic linker's
+ hook (and possibly the dld itself) after catching a shlib
+ event? */
if (ecs->stepping_through_solib_after_catch)
{
#if defined(SOLIB_ADD)
/* Have we reached our destination? If not, keep going. */
if (SOLIB_IN_DYNAMIC_LINKER (PIDGET (ecs->ptid), stop_pc))
{
+ if (debug_infrun)
+ fprintf_unfiltered (gdb_stdlog, "infrun: stepping in dynamic linker\n");
ecs->another_trap = 1;
keep_going (ecs);
return;
}
#endif
+ if (debug_infrun)
+ fprintf_unfiltered (gdb_stdlog, "infrun: step past dynamic linker\n");
/* Else, stop and report the catchpoint(s) whose triggering
caused us to begin stepping. */
ecs->stepping_through_solib_after_catch = 0;
if (step_resume_breakpoint)
{
+ if (debug_infrun)
+ fprintf_unfiltered (gdb_stdlog, "infrun: step-resume breakpoint\n");
+
/* Having a step-resume breakpoint overrides anything
else having to do with stepping commands until
that breakpoint is reached. */
if (step_range_end == 0)
{
+ if (debug_infrun)
+ fprintf_unfiltered (gdb_stdlog, "infrun: no stepping, continue\n");
/* Likewise if we aren't even stepping. */
keep_going (ecs);
return;
within it! */
if (stop_pc >= step_range_start && stop_pc < step_range_end)
{
+ if (debug_infrun)
+ fprintf_unfiltered (gdb_stdlog, "infrun: stepping inside range [0x%s-0x%s]\n",
+ paddr_nz (step_range_start),
+ paddr_nz (step_range_end));
keep_going (ecs);
return;
}
until we exit the run time loader code and reach the callee's
address. */
if (step_over_calls == STEP_OVER_UNDEBUGGABLE
- && IN_SOLIB_DYNSYM_RESOLVE_CODE (stop_pc))
+#ifdef IN_SOLIB_DYNSYM_RESOLVE_CODE
+ && IN_SOLIB_DYNSYM_RESOLVE_CODE (stop_pc)
+#else
+ && in_solib_dynsym_resolve_code (stop_pc)
+#endif
+ )
{
CORE_ADDR pc_after_resolver =
gdbarch_skip_solib_resolver (current_gdbarch, stop_pc);
+ if (debug_infrun)
+ fprintf_unfiltered (gdb_stdlog, "infrun: stepped into dynsym resolve code\n");
+
if (pc_after_resolver)
{
/* Set up a step-resume breakpoint at the address
|| step_over_calls == STEP_OVER_ALL)
&& get_frame_type (get_current_frame ()) == SIGTRAMP_FRAME)
{
+ if (debug_infrun)
+ fprintf_unfiltered (gdb_stdlog, "infrun: stepped into signal trampoline\n");
/* The inferior, while doing a "step" or "next", has ended up in
a signal trampoline (either by a signal being delivered or by
the signal handler returning). Just single-step until the
/* It's a subroutine call. */
CORE_ADDR real_stop_pc;
+ if (debug_infrun)
+ fprintf_unfiltered (gdb_stdlog, "infrun: stepped into subroutine\n");
+
if ((step_over_calls == STEP_OVER_NONE)
|| ((step_range_end == 1)
&& in_prologue (prev_pc, ecs->stop_func_start)))
if (real_stop_pc != 0)
ecs->stop_func_start = real_stop_pc;
- if (IN_SOLIB_DYNSYM_RESOLVE_CODE (ecs->stop_func_start))
+ if (
+#ifdef IN_SOLIB_DYNSYM_RESOLVE_CODE
+ IN_SOLIB_DYNSYM_RESOLVE_CODE (ecs->stop_func_start)
+#else
+ in_solib_dynsym_resolve_code (ecs->stop_func_start)
+#endif
+)
{
struct symtab_and_line sr_sal;
init_sal (&sr_sal);
/* Determine where this trampoline returns. */
CORE_ADDR real_stop_pc = SKIP_TRAMPOLINE_CODE (stop_pc);
+ if (debug_infrun)
+ fprintf_unfiltered (gdb_stdlog, "infrun: stepped into solib return tramp\n");
+
/* Only proceed through if we know where it's going. */
if (real_stop_pc)
{
if (step_over_calls == STEP_OVER_UNDEBUGGABLE
&& ecs->stop_func_name == NULL)
{
+ if (debug_infrun)
+ fprintf_unfiltered (gdb_stdlog, "infrun: stepped into undebuggable function\n");
+
/* The inferior just stepped into, or returned to, an
undebuggable function (where there is no symbol, not even a
minimal symbol, corresponding to the address where the
{
/* It is stepi or nexti. We always want to stop stepping after
one instruction. */
+ if (debug_infrun)
+ fprintf_unfiltered (gdb_stdlog, "infrun: stepi/nexti\n");
stop_step = 1;
print_stop_reason (END_STEPPING_RANGE, 0);
stop_stepping (ecs);
stepping (does this always happen right after one instruction,
when we do "s" in a function with no line numbers,
or can this happen as a result of a return or longjmp?). */
+ if (debug_infrun)
+ fprintf_unfiltered (gdb_stdlog, "infrun: no line number info\n");
stop_step = 1;
print_stop_reason (END_STEPPING_RANGE, 0);
stop_stepping (ecs);
we don't stop if we step into the middle of a different line.
That is said to make things like for (;;) statements work
better. */
+ if (debug_infrun)
+ fprintf_unfiltered (gdb_stdlog, "infrun: stepped to a different line\n");
stop_step = 1;
print_stop_reason (END_STEPPING_RANGE, 0);
stop_stepping (ecs);
This is particularly necessary for a one-line function,
in which after skipping the prologue we better stop even though
we will be in mid-line. */
+ if (debug_infrun)
+ fprintf_unfiltered (gdb_stdlog, "infrun: stepped to a different function\n");
stop_step = 1;
print_stop_reason (END_STEPPING_RANGE, 0);
stop_stepping (ecs);
step_frame_id = current_frame;
}
+ if (debug_infrun)
+ fprintf_unfiltered (gdb_stdlog, "infrun: keep going\n");
keep_going (ecs);
}
static void
stop_stepping (struct execution_control_state *ecs)
{
+ if (debug_infrun)
+ fprintf_unfiltered (gdb_stdlog, "infrun: stop_stepping\n");
+
/* Let callers know we don't want to wait for the inferior anymore. */
ecs->wait_some_more = 0;
}
static void
prepare_to_wait (struct execution_control_state *ecs)
{
+ if (debug_infrun)
+ fprintf_unfiltered (gdb_stdlog, "infrun: prepare_to_wait\n");
if (ecs->infwait_state == infwait_normal_state)
{
overlay_cache_invalid = 1;
break;
default:
internal_error (__FILE__, __LINE__,
- "print_stop_reason: unrecognized enum value");
+ _("print_stop_reason: unrecognized enum value"));
break;
}
}
&& last.kind != TARGET_WAITKIND_EXITED)
{
target_terminal_ours_for_output ();
- printf_filtered ("[Switching to %s]\n",
+ printf_filtered (_("[Switching to %s]\n"),
target_pid_or_tid_to_str (inferior_ptid));
previous_inferior_ptid = inferior_ptid;
}
if (remove_breakpoints ())
{
target_terminal_ours_for_output ();
- printf_filtered ("Cannot remove breakpoints because ");
- printf_filtered ("program is no longer writable.\n");
- printf_filtered ("It might be running in another process.\n");
- printf_filtered ("Further execution is probably impossible.\n");
+ printf_filtered (_("\
+Cannot remove breakpoints because program is no longer writable.\n\
+It might be running in another process.\n\
+Further execution is probably impossible.\n"));
}
}
breakpoints_inserted = 0;
do_frame_printing = 0;
break;
default:
- internal_error (__FILE__, __LINE__, "Unknown value.");
+ internal_error (__FILE__, __LINE__, _("Unknown value."));
}
/* For mi, have the same behavior every time we stop:
print everything but the source line. */
static void
sig_print_header (void)
{
- printf_filtered ("\
-Signal Stop\tPrint\tPass to program\tDescription\n");
+ printf_filtered (_("\
+Signal Stop\tPrint\tPass to program\tDescription\n"));
}
static void
if (args == NULL)
{
- error_no_arg ("signal to handle");
+ error_no_arg (_("signal to handle"));
}
/* Allocate and zero an array of flags for which signals to handle. */
else
{
/* Not a number and not a recognized flag word => complain. */
- error ("Unrecognized or ambiguous flag word: \"%s\".", *argv);
+ error (_("Unrecognized or ambiguous flag word: \"%s\"."), *argv);
}
}
}
else
{
- printf_unfiltered ("Not confirmed, unchanged.\n");
+ printf_unfiltered (_("Not confirmed, unchanged.\n"));
gdb_flush (gdb_stdout);
}
}
if (validFlag)
handle_command (argBuf, from_tty);
else
- printf_filtered ("Invalid signal handling flag.\n");
+ printf_filtered (_("Invalid signal handling flag.\n"));
if (argBuf)
xfree (argBuf);
}
sig_print_info (oursig);
}
- printf_filtered ("\nUse the \"handle\" command to change these tables.\n");
+ printf_filtered (_("\nUse the \"handle\" command to change these tables.\n"));
}
\f
struct inferior_status
selected frame. */
if (frame == NULL)
{
- warning ("Unable to restore previously selected frame.\n");
+ warning (_("Unable to restore previously selected frame."));
return 0;
}
DEPRECATED_REGISTER_GDBARCH_SWAP (stop_registers);
deprecated_register_gdbarch_swap (NULL, 0, build_infrun);
- add_info ("signals", signals_info,
- "What debugger does when program gets various signals.\n\
-Specify a signal as argument to print info on that signal only.");
+ add_info ("signals", signals_info, _("\
+What debugger does when program gets various signals.\n\
+Specify a signal as argument to print info on that signal only."));
add_info_alias ("handle", "signals", 0);
- add_com ("handle", class_run, handle_command,
- concat ("Specify how to handle a signal.\n\
+ add_com ("handle", class_run, handle_command, _("\
+Specify how to handle a signal.\n\
Args are signals and actions to apply to those signals.\n\
Symbolic signals (e.g. SIGSEGV) are recommended but numeric signals\n\
from 1-15 are allowed for compatibility with old versions of GDB.\n\
Numeric ranges may be specified with the form LOW-HIGH (e.g. 1-5).\n\
The special arg \"all\" is recognized to mean all signals except those\n\
-used by the debugger, typically SIGTRAP and SIGINT.\n", "Recognized actions include \"stop\", \"nostop\", \"print\", \"noprint\",\n\
+used by the debugger, typically SIGTRAP and SIGINT.\n\
+Recognized actions include \"stop\", \"nostop\", \"print\", \"noprint\",\n\
\"pass\", \"nopass\", \"ignore\", or \"noignore\".\n\
Stop means reenter debugger if this signal happens (implies print).\n\
Print means print a message if this signal happens.\n\
Pass means let program see this signal; otherwise program doesn't know.\n\
Ignore is a synonym for nopass and noignore is a synonym for pass.\n\
-Pass and Stop may be combined.", NULL));
+Pass and Stop may be combined."));
if (xdb_commands)
{
- add_com ("lz", class_info, signals_info,
- "What debugger does when program gets various signals.\n\
-Specify a signal as argument to print info on that signal only.");
- add_com ("z", class_run, xdb_handle_command,
- concat ("Specify how to handle a signal.\n\
+ add_com ("lz", class_info, signals_info, _("\
+What debugger does when program gets various signals.\n\
+Specify a signal as argument to print info on that signal only."));
+ add_com ("z", class_run, xdb_handle_command, _("\
+Specify how to handle a signal.\n\
Args are signals and actions to apply to those signals.\n\
Symbolic signals (e.g. SIGSEGV) are recommended but numeric signals\n\
from 1-15 are allowed for compatibility with old versions of GDB.\n\
Numeric ranges may be specified with the form LOW-HIGH (e.g. 1-5).\n\
The special arg \"all\" is recognized to mean all signals except those\n\
-used by the debugger, typically SIGTRAP and SIGINT.\n", "Recognized actions include \"s\" (toggles between stop and nostop), \n\
+used by the debugger, typically SIGTRAP and SIGINT.\n\
+Recognized actions include \"s\" (toggles between stop and nostop), \n\
\"r\" (toggles between print and noprint), \"i\" (toggles between pass and \
nopass), \"Q\" (noprint)\n\
Stop means reenter debugger if this signal happens (implies print).\n\
Print means print a message if this signal happens.\n\
Pass means let program see this signal; otherwise program doesn't know.\n\
Ignore is a synonym for nopass and noignore is a synonym for pass.\n\
-Pass and Stop may be combined.", NULL));
+Pass and Stop may be combined."));
}
if (!dbx_commands)
- stop_command =
- add_cmd ("stop", class_obscure, not_just_help_class_command, "There is no `stop' command, but you can set a hook on `stop'.\n\
+ stop_command = add_cmd ("stop", class_obscure,
+ not_just_help_class_command, _("\
+There is no `stop' command, but you can set a hook on `stop'.\n\
This allows you to set a list of commands to be run each time execution\n\
-of the program stops.", &cmdlist);
+of the program stops."), &cmdlist);
+
+ add_setshow_zinteger_cmd ("infrun", class_maintenance, &debug_infrun, _("\
+Set inferior debugging."), _("\
+Show inferior debugging."), _("\
+When non-zero, inferior specific debugging is enabled."),
+ NULL,
+ show_debug_infrun,
+ &setdebuglist, &showdebuglist);
numsigs = (int) TARGET_SIGNAL_LAST;
signal_stop = (unsigned char *) xmalloc (sizeof (signal_stop[0]) * numsigs);
signal_stop[TARGET_SIGNAL_CANCEL] = 0;
signal_print[TARGET_SIGNAL_CANCEL] = 0;
-#ifdef SOLIB_ADD
- deprecated_add_show_from_set
- (add_set_cmd ("stop-on-solib-events", class_support, var_zinteger,
- (char *) &stop_on_solib_events,
- "Set stopping for shared library events.\n\
+ add_setshow_zinteger_cmd ("stop-on-solib-events", class_support,
+ &stop_on_solib_events, _("\
+Set stopping for shared library events."), _("\
+Show stopping for shared library events."), _("\
If nonzero, gdb will give control to the user when the dynamic linker\n\
notifies gdb of shared library events. The most common event of interest\n\
-to the user would be loading/unloading of a new library.\n", &setlist), &showlist);
-#endif
-
- c = add_set_enum_cmd ("follow-fork-mode",
- class_run,
- follow_fork_mode_kind_names, &follow_fork_mode_string,
- "Set debugger response to a program call of fork \
-or vfork.\n\
+to the user would be loading/unloading of a new library."),
+ NULL,
+ show_stop_on_solib_events,
+ &setlist, &showlist);
+
+ add_setshow_enum_cmd ("follow-fork-mode", class_run,
+ follow_fork_mode_kind_names,
+ &follow_fork_mode_string, _("\
+Set debugger response to a program call of fork or vfork."), _("\
+Show debugger response to a program call of fork or vfork."), _("\
A fork or vfork creates a new process. follow-fork-mode can be:\n\
parent - the original process is debugged after a fork\n\
child - the new process is debugged after a fork\n\
The unfollowed process will continue to run.\n\
-By default, the debugger will follow the parent process.", &setlist);
- deprecated_add_show_from_set (c, &showlist);
-
- c = add_set_enum_cmd ("scheduler-locking", class_run, scheduler_enums, /* array of string names */
- &scheduler_mode, /* current mode */
- "Set mode for locking scheduler during execution.\n\
+By default, the debugger will follow the parent process."),
+ NULL,
+ show_follow_fork_mode_string,
+ &setlist, &showlist);
+
+ add_setshow_enum_cmd ("scheduler-locking", class_run,
+ scheduler_enums, &scheduler_mode, _("\
+Set mode for locking scheduler during execution."), _("\
+Show mode for locking scheduler during execution."), _("\
off == no locking (threads may preempt at any time)\n\
on == full locking (no thread except the current thread may run)\n\
step == scheduler locked during every single-step operation.\n\
In this mode, no other thread may run during a step command.\n\
- Other threads may run while stepping over a function call ('next').", &setlist);
-
- set_cmd_sfunc (c, set_schedlock_func); /* traps on target vector */
- deprecated_add_show_from_set (c, &showlist);
-
- c = add_set_cmd ("step-mode", class_run,
- var_boolean, (char *) &step_stop_if_no_debug,
- "Set mode of the step operation. When set, doing a step over a\n\
-function without debug line information will stop at the first\n\
-instruction of that function. Otherwise, the function is skipped and\n\
-the step command stops at a different source line.", &setlist);
- deprecated_add_show_from_set (c, &showlist);
+ Other threads may run while stepping over a function call ('next')."),
+ set_schedlock_func, /* traps on target vector */
+ show_scheduler_mode,
+ &setlist, &showlist);
+
+ add_setshow_boolean_cmd ("step-mode", class_run, &step_stop_if_no_debug, _("\
+Set mode of the step operation."), _("\
+Show mode of the step operation."), _("\
+When set, doing a step over a function without debug line information\n\
+will stop at the first instruction of that function. Otherwise, the\n\
+function is skipped and the step command stops at a different source line."),
+ NULL,
+ show_step_stop_if_no_debug,
+ &setlist, &showlist);
/* ptid initializations */
null_ptid = ptid_build (0, 0, 0);
projects / binutils.git / blobdiff