#include "gdbcore.h"
#include "exceptions.h"
#include "target-descriptions.h"
+#include "gdb_stdint.h"
static void target_info (char *, int);
static int trust_readonly = 0;
+/* Nonzero if we should show true memory content including
+ memory breakpoint inserted by gdb. */
+
+static int show_memory_breakpoints = 0;
+
/* Non-zero if we want to see trace of target level stuff. */
static int targetdebug = 0;
/* Do not inherit to_follow_fork. */
INHERIT (to_insert_exec_catchpoint, t);
INHERIT (to_remove_exec_catchpoint, t);
- INHERIT (to_reported_exec_events_per_exec_call, t);
INHERIT (to_has_exited, t);
INHERIT (to_mourn_inferior, t);
INHERIT (to_can_run, t);
INHERIT (to_can_async_p, t);
INHERIT (to_is_async_p, t);
INHERIT (to_async, t);
- INHERIT (to_async_mask_value, t);
+ INHERIT (to_async_mask, t);
INHERIT (to_find_memory_regions, t);
INHERIT (to_make_corefile_notes, t);
INHERIT (to_get_thread_local_address, t);
de_fault (to_remove_exec_catchpoint,
(int (*) (int))
tcomplain);
- de_fault (to_reported_exec_events_per_exec_call,
- (int (*) (void))
- return_one);
de_fault (to_has_exited,
(int (*) (int, int, int *))
return_zero);
de_fault (to_async,
(void (*) (void (*) (enum inferior_event_type, void*), void*))
tcomplain);
+ de_fault (to_async_mask,
+ (int (*) (int))
+ return_one);
current_target.to_read_description = NULL;
#undef de_fault
if (res <= 0)
return -1;
else
- return res;
+ {
+ if (readbuf && !show_memory_breakpoints)
+ breakpoint_restore_shadows (readbuf, memaddr, reg_len);
+ return res;
+ }
}
/* If none of those methods found the memory we wanted, fall back
res = ops->to_xfer_partial (ops, TARGET_OBJECT_MEMORY, NULL,
readbuf, writebuf, memaddr, reg_len);
if (res > 0)
- return res;
+ break;
/* We want to continue past core files to executables, but not
past a running target's memory. */
if (ops->to_has_all_memory)
- return res;
+ break;
ops = ops->beneath;
}
while (ops != NULL);
+ if (readbuf && !show_memory_breakpoints)
+ breakpoint_restore_shadows (readbuf, memaddr, reg_len);
+
/* If we still haven't got anything, return the last error. We
give up. */
return res;
}
+static void
+restore_show_memory_breakpoints (void *arg)
+{
+ show_memory_breakpoints = (uintptr_t) arg;
+}
+
+struct cleanup *
+make_show_memory_breakpoints_cleanup (int show)
+{
+ int current = show_memory_breakpoints;
+ show_memory_breakpoints = show;
+
+ return make_cleanup (restore_show_memory_breakpoints,
+ (void *) (uintptr_t) current);
+}
+
static LONGEST
target_xfer_partial (struct target_ops *ops,
enum target_object object, const char *annex,
void
target_detach (char *args, int from_tty)
{
+ /* If we're in breakpoints-always-inserted mode, have to
+ remove them before detaching. */
+ remove_breakpoints ();
+
(current_target.to_detach) (args, from_tty);
}
{
struct target_ops *t;
+ /* If we're in breakpoints-always-inserted mode, have to
+ remove them before disconnecting. */
+ remove_breakpoints ();
+
for (t = current_target.beneath; t != NULL; t = t->beneath)
if (t->to_disconnect != NULL)
{
tcomplain ();
}
-int
-target_async_mask (int mask)
-{
- int saved_async_masked_status = target_async_mask_value;
- target_async_mask_value = mask;
- return saved_async_masked_status;
-}
-
/* Look through the list of possible targets for a target that can
follow forks. */
execute a run or attach command without any other data. This is
used to locate the default process stratum.
- Result is always valid (error() is called for errors). */
+ If DO_MESG is not NULL, the result is always valid (error() is
+ called for errors); else, return NULL on error. */
static struct target_ops *
find_default_run_target (char *do_mesg)
}
if (count != 1)
- error (_("Don't know how to %s. Try \"help target\"."), do_mesg);
+ {
+ if (do_mesg)
+ error (_("Don't know how to %s. Try \"help target\"."), do_mesg);
+ else
+ return NULL;
+ }
return runable;
}
return;
}
+int
+find_default_can_async_p (void)
+{
+ struct target_ops *t;
+
+ /* This may be called before the target is pushed on the stack;
+ look for the default process stratum. If there's none, gdb isn't
+ configured with a native debugger, and target remote isn't
+ connected yet. */
+ t = find_default_run_target (NULL);
+ if (t && t->to_can_async_p)
+ return (t->to_can_async_p) ();
+ return 0;
+}
+
+int
+find_default_is_async_p (void)
+{
+ struct target_ops *t;
+
+ /* This may be called before the target is pushed on the stack;
+ look for the default process stratum. If there's none, gdb isn't
+ configured with a native debugger, and target remote isn't
+ connected yet. */
+ t = find_default_run_target (NULL);
+ if (t && t->to_is_async_p)
+ return (t->to_is_async_p) ();
+ return 0;
+}
+
static int
default_region_ok_for_hw_watchpoint (CORE_ADDR addr, int len)
{
dummy_target.to_doc = "";
dummy_target.to_attach = find_default_attach;
dummy_target.to_create_inferior = find_default_create_inferior;
+ dummy_target.to_can_async_p = find_default_can_async_p;
+ dummy_target.to_is_async_p = find_default_is_async_p;
dummy_target.to_pid_to_str = normal_pid_to_str;
dummy_target.to_stratum = dummy_stratum;
dummy_target.to_find_memory_regions = dummy_find_memory_regions;
return retval;
}
-static int
-debug_to_reported_exec_events_per_exec_call (void)
-{
- int reported_exec_events;
-
- reported_exec_events = debug_target.to_reported_exec_events_per_exec_call ();
-
- fprintf_unfiltered (gdb_stdlog,
- "target_reported_exec_events_per_exec_call () = %d\n",
- reported_exec_events);
-
- return reported_exec_events;
-}
-
static int
debug_to_has_exited (int pid, int wait_status, int *exit_status)
{
current_target.to_remove_vfork_catchpoint = debug_to_remove_vfork_catchpoint;
current_target.to_insert_exec_catchpoint = debug_to_insert_exec_catchpoint;
current_target.to_remove_exec_catchpoint = debug_to_remove_exec_catchpoint;
- current_target.to_reported_exec_events_per_exec_call = debug_to_reported_exec_events_per_exec_call;
current_target.to_has_exited = debug_to_has_exited;
current_target.to_mourn_inferior = debug_to_mourn_inferior;
current_target.to_can_run = debug_to_can_run;
projects / deliverable / binutils-gdb.git / blobdiff