/* Memory-access and commands for "inferior" process, for GDB.
- Copyright 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995,
- 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004
+
+ Copyright 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994,
+ 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005
Free Software Foundation, Inc.
This file is part of GDB.
struct frame_id step_frame_id;
-/* Our notion of the current stack pointer. */
-
-CORE_ADDR step_sp;
-
enum step_over_calls_kind step_over_calls;
/* If stepping, nonzero means step count is > 1
inferior_io_terminal = savestring (file, strlen (file));
}
-static void
-run_command (char *args, int from_tty)
-{
- char *exec_file;
-
- dont_repeat ();
+/* Kill the inferior if already running. This function is designed
+ to be called when we are about to start the execution of the program
+ from the beginning. Ask the user to confirm that he wants to restart
+ the program being debugged when FROM_TTY is non-null. */
+void
+kill_if_already_running (int from_tty)
+{
if (! ptid_equal (inferior_ptid, null_ptid) && target_has_execution)
{
if (from_tty
#endif
init_wait_for_inferior ();
}
+}
+static void
+run_command (char *args, int from_tty)
+{
+ char *exec_file;
+
+ dont_repeat ();
+
+ kill_if_already_running (from_tty);
clear_breakpoint_hit_counts ();
/* Purge old solib objfiles. */
if (!args)
{
- if (event_loop_p && target_can_async_p ())
+ if (target_can_async_p ())
async_disable_stdin ();
}
else
/* If we get a request for running in the bg but the target
doesn't support it, error out. */
- if (event_loop_p && async_exec && !target_can_async_p ())
+ if (async_exec && !target_can_async_p ())
error ("Asynchronous execution not supported on this target.");
/* If we don't get a request of running in the bg, then we need
to simulate synchronous (fg) execution. */
- if (event_loop_p && !async_exec && target_can_async_p ())
+ if (!async_exec && target_can_async_p ())
{
/* Simulate synchronous execution */
async_disable_stdin ();
/* We call get_inferior_args() because we might need to compute
the value now. */
target_create_inferior (exec_file, get_inferior_args (),
- environ_vector (inferior_environ));
+ environ_vector (inferior_environ), from_tty);
}
}
\f
+/* Start the execution of the program up until the beginning of the main
+ program. */
+
+static void
+start_command (char *args, int from_tty)
+{
+ /* Some languages such as Ada need to search inside the program
+ minimal symbols for the location where to put the temporary
+ breakpoint before starting. */
+ if (!have_minimal_symbols ())
+ error ("No symbol table loaded. Use the \"file\" command.");
+
+ /* If the inferior is already running, we want to ask the user if we
+ should restart it or not before we insert the temporary breakpoint.
+ This makes sure that this command doesn't have any side effect if
+ the user changes its mind. */
+ kill_if_already_running (from_tty);
+
+ /* Insert the temporary breakpoint, and run... */
+ tbreak_command (main_name (), 0);
+ run_command (args, from_tty);
+}
+
void
continue_command (char *proc_count_exp, int from_tty)
{
/* If we must run in the background, but the target can't do it,
error out. */
- if (event_loop_p && async_exec && !target_can_async_p ())
+ if (async_exec && !target_can_async_p ())
error ("Asynchronous execution not supported on this target.");
/* If we are not asked to run in the bg, then prepare to run in the
foreground, synchronously. */
- if (event_loop_p && !async_exec && target_can_async_p ())
+ if (!async_exec && target_can_async_p ())
{
/* Simulate synchronous execution */
async_disable_stdin ();
/* If we get a request for running in the bg but the target
doesn't support it, error out. */
- if (event_loop_p && async_exec && !target_can_async_p ())
+ if (async_exec && !target_can_async_p ())
error ("Asynchronous execution not supported on this target.");
/* If we don't get a request of running in the bg, then we need
to simulate synchronous (fg) execution. */
- if (event_loop_p && !async_exec && target_can_async_p ())
+ if (!async_exec && target_can_async_p ())
{
/* Simulate synchronous execution */
async_disable_stdin ();
if (!single_inst || skip_subroutines) /* leave si command alone */
{
enable_longjmp_breakpoint ();
- if (!event_loop_p || !target_can_async_p ())
+ if (!target_can_async_p ())
cleanups = make_cleanup (disable_longjmp_breakpoint_cleanup, 0 /*ignore*/);
else
make_exec_cleanup (disable_longjmp_breakpoint_cleanup, 0 /*ignore*/);
}
/* In synchronous case, all is well, just use the regular for loop. */
- if (!event_loop_p || !target_can_async_p ())
+ if (!target_can_async_p ())
{
for (; count > 0; count--)
{
if (!frame) /* Avoid coredump here. Why tho? */
error ("No current frame");
step_frame_id = get_frame_id (frame);
- step_sp = read_sp ();
if (!single_inst)
{
and handle them one at the time, through step_once(). */
else
{
- if (event_loop_p && target_can_async_p ())
+ if (target_can_async_p ())
step_once (skip_subroutines, single_inst, count);
}
}
if (!frame) /* Avoid coredump here. Why tho? */
error ("No current frame");
step_frame_id = get_frame_id (frame);
- step_sp = read_sp ();
if (!single_inst)
{
/* If we must run in the background, but the target can't do it,
error out. */
- if (event_loop_p && async_exec && !target_can_async_p ())
+ if (async_exec && !target_can_async_p ())
error ("Asynchronous execution not supported on this target.");
/* If we are not asked to run in the bg, then prepare to run in the
foreground, synchronously. */
- if (event_loop_p && !async_exec && target_can_async_p ())
+ if (!async_exec && target_can_async_p ())
{
/* Simulate synchronous execution */
async_disable_stdin ();
step_over_calls = STEP_OVER_ALL;
step_frame_id = get_frame_id (frame);
- step_sp = read_sp ();
step_multi = 0; /* Only one call to proceed */
/* If we must run in the background, but the target can't do it,
error out. */
- if (event_loop_p && async_exec && !target_can_async_p ())
+ if (async_exec && !target_can_async_p ())
error ("Asynchronous execution not supported on this target.");
/* If we are not asked to run in the bg, then prepare to run in the
foreground, synchronously. */
- if (event_loop_p && !async_exec && target_can_async_p ())
+ if (!async_exec && target_can_async_p ())
{
/* Simulate synchronous execution */
async_disable_stdin ();
/* If we must run in the background, but the target can't do it,
error out. */
- if (event_loop_p && async_exec && !target_can_async_p ())
+ if (async_exec && !target_can_async_p ())
error ("Asynchronous execution not supported on this target.");
/* If we are not asked to run in the bg, then prepare to run in the
foreground, synchronously. */
- if (event_loop_p && !async_exec && target_can_async_p ())
+ if (!async_exec && target_can_async_p ())
{
/* Simulate synchronous execution. */
async_disable_stdin ();
until_break_command (arg, from_tty, 1);
}
\f
-
/* Print the result of a function at the end of a 'finish' command. */
static void
print_return_value (int struct_return, struct type *value_type)
{
+ struct gdbarch *gdbarch = current_gdbarch;
struct cleanup *old_chain;
struct ui_stream *stb;
struct value *value;
- if (!struct_return)
- {
- /* The return value can be found in the inferior's registers. */
- value = register_value_being_returned (value_type, stop_registers);
- }
- /* FIXME: cagney/2004-01-17: When both return_value and
- extract_returned_value_address are available, should use that to
- find the address of and then extract the returned value. */
+ gdb_assert (TYPE_CODE (value_type) != TYPE_CODE_VOID);
+
/* FIXME: 2003-09-27: When returning from a nested inferior function
call, it's possible (with no help from the architecture vector)
to locate and return/print a "struct return" value. This is just
a more complicated case of what is already being done in in the
inferior function call code. In fact, when inferior function
calls are made async, this will likely be made the norm. */
- else if (gdbarch_return_value_p (current_gdbarch))
- /* We cannot determine the contents of the structure because it is
- on the stack, and we don't know where, since we did not
- initiate the call, as opposed to the call_function_by_hand
- case. */
+
+ switch (gdbarch_return_value (gdbarch, value_type, NULL, NULL, NULL))
+ {
+ case RETURN_VALUE_REGISTER_CONVENTION:
+ case RETURN_VALUE_ABI_RETURNS_ADDRESS:
+ value = allocate_value (value_type);
+ CHECK_TYPEDEF (value_type);
+ gdbarch_return_value (current_gdbarch, value_type, stop_registers,
+ value_contents_raw (value), NULL);
+ break;
+ case RETURN_VALUE_STRUCT_CONVENTION:
+ value = NULL;
+ break;
+ default:
+ internal_error (__FILE__, __LINE__, "bad switch");
+ }
+
+ if (value)
+ {
+ /* Print it. */
+ stb = ui_out_stream_new (uiout);
+ old_chain = make_cleanup_ui_out_stream_delete (stb);
+ ui_out_text (uiout, "Value returned is ");
+ ui_out_field_fmt (uiout, "gdb-result-var", "$%d",
+ record_latest_value (value));
+ ui_out_text (uiout, " = ");
+ value_print (value, stb->stream, 0, Val_no_prettyprint);
+ ui_out_field_stream (uiout, "return-value", stb);
+ ui_out_text (uiout, "\n");
+ do_cleanups (old_chain);
+ }
+ else
{
- gdb_assert (gdbarch_return_value (current_gdbarch, value_type,
- NULL, NULL, NULL)
- == RETURN_VALUE_STRUCT_CONVENTION);
ui_out_text (uiout, "Value returned has type: ");
ui_out_field_string (uiout, "return-type", TYPE_NAME (value_type));
ui_out_text (uiout, ".");
ui_out_text (uiout, " Cannot determine contents\n");
- return;
}
- else
- {
- if (DEPRECATED_EXTRACT_STRUCT_VALUE_ADDRESS_P ())
- {
- CORE_ADDR addr = DEPRECATED_EXTRACT_STRUCT_VALUE_ADDRESS (stop_registers);
- if (!addr)
- error ("Function return value unknown.");
- value = value_at (value_type, addr, NULL);
- }
- else
- {
- /* It is "struct return" yet the value is being extracted,
- presumably from registers, using EXTRACT_RETURN_VALUE.
- This doesn't make sense. Unfortunately, the legacy
- interfaces allowed this behavior. Sigh! */
- value = allocate_value (value_type);
- CHECK_TYPEDEF (value_type);
- /* If the function returns void, don't bother fetching the
- return value. */
- EXTRACT_RETURN_VALUE (value_type, stop_registers,
- VALUE_CONTENTS_RAW (value));
- }
- }
-
- /* Print it. */
- stb = ui_out_stream_new (uiout);
- old_chain = make_cleanup_ui_out_stream_delete (stb);
- ui_out_text (uiout, "Value returned is ");
- ui_out_field_fmt (uiout, "gdb-result-var", "$%d",
- record_latest_value (value));
- ui_out_text (uiout, " = ");
- value_print (value, stb->stream, 0, Val_no_prettyprint);
- ui_out_field_stream (uiout, "return-value", stb);
- ui_out_text (uiout, "\n");
- do_cleanups (old_chain);
}
/* Stuff that needs to be done by the finish command after the target
/* If we must run in the background, but the target can't do it,
error out. */
- if (event_loop_p && async_exec && !target_can_async_p ())
+ if (async_exec && !target_can_async_p ())
error ("Asynchronous execution not supported on this target.");
/* If we are not asked to run in the bg, then prepare to run in the
foreground, synchronously. */
- if (event_loop_p && !async_exec && target_can_async_p ())
+ if (!async_exec && target_can_async_p ())
{
/* Simulate synchronous execution. */
async_disable_stdin ();
breakpoint = set_momentary_breakpoint (sal, get_frame_id (frame), bp_finish);
- if (!event_loop_p || !target_can_async_p ())
+ if (!target_can_async_p ())
old_chain = make_cleanup_delete_breakpoint (breakpoint);
else
old_chain = make_exec_cleanup_delete_breakpoint (breakpoint);
if (from_tty)
{
printf_filtered ("Run till exit from ");
- print_stack_frame (deprecated_selected_frame,
- frame_relative_level (deprecated_selected_frame), 0);
+ print_stack_frame (get_selected_frame (NULL), 1, LOCATION);
}
/* If running asynchronously and the target support asynchronous
execution, set things up for the rest of the finish command to be
completed later on, when gdb has detected that the target has
stopped, in fetch_inferior_event. */
- if (event_loop_p && target_can_async_p ())
+ if (target_can_async_p ())
{
arg1 =
(struct continuation_arg *) xmalloc (sizeof (struct continuation_arg));
/* Do this only if not running asynchronously or if the target
cannot do async execution. Otherwise, complete this command when
the target actually stops, in fetch_inferior_event. */
- if (!event_loop_p || !target_can_async_p ())
+ if (!target_can_async_p ())
{
/* Did we stop at our breakpoint? */
if (bpstat_find_breakpoint (stop_bpstat, breakpoint) != NULL
target_files_info ();
printf_filtered ("Program stopped at %s.\n",
- local_hex_string ((unsigned long) stop_pc));
+ hex_string ((unsigned long) stop_pc));
if (stop_step)
printf_filtered ("It stopped after being stepped.\n");
else if (num != 0)
{
int i;
const int numregs = NUM_REGS + NUM_PSEUDO_REGS;
- char raw_buffer[MAX_REGISTER_SIZE];
- char virtual_buffer[MAX_REGISTER_SIZE];
-
- if (DEPRECATED_DO_REGISTERS_INFO_P ())
- {
- DEPRECATED_DO_REGISTERS_INFO (regnum, print_all);
- return;
- }
+ char buffer[MAX_REGISTER_SIZE];
for (i = 0; i < numregs; i++)
{
print_spaces_filtered (15 - strlen (REGISTER_NAME (i)), file);
/* Get the data in raw format. */
- if (! frame_register_read (frame, i, raw_buffer))
+ if (! frame_register_read (frame, i, buffer))
{
fprintf_filtered (file, "*value not available*\n");
continue;
}
- /* FIXME: cagney/2002-08-03: This code shouldn't be necessary.
- The function frame_register_read() should have returned the
- pre-cooked register so no conversion is necessary. */
- /* Convert raw data to virtual format if necessary. */
- if (DEPRECATED_REGISTER_CONVERTIBLE_P ()
- && DEPRECATED_REGISTER_CONVERTIBLE (i))
- {
- DEPRECATED_REGISTER_CONVERT_TO_VIRTUAL (i, register_type (current_gdbarch, i),
- raw_buffer, virtual_buffer);
- }
- else
- {
- memcpy (virtual_buffer, raw_buffer,
- DEPRECATED_REGISTER_VIRTUAL_SIZE (i));
- }
-
/* If virtual format is floating, print it that way, and in raw
hex. */
if (TYPE_CODE (register_type (current_gdbarch, i)) == TYPE_CODE_FLT)
{
int j;
- val_print (register_type (current_gdbarch, i), virtual_buffer, 0, 0,
+ val_print (register_type (current_gdbarch, i), buffer, 0, 0,
file, 0, 1, 0, Val_pretty_default);
fprintf_filtered (file, "\t(raw 0x");
- for (j = 0; j < DEPRECATED_REGISTER_RAW_SIZE (i); j++)
+ for (j = 0; j < register_size (current_gdbarch, i); j++)
{
int idx;
if (TARGET_BYTE_ORDER == BFD_ENDIAN_BIG)
idx = j;
else
- idx = DEPRECATED_REGISTER_RAW_SIZE (i) - 1 - j;
- fprintf_filtered (file, "%02x", (unsigned char) raw_buffer[idx]);
+ idx = register_size (current_gdbarch, i) - 1 - j;
+ fprintf_filtered (file, "%02x", (unsigned char) buffer[idx]);
}
fprintf_filtered (file, ")");
}
else
{
/* Print the register in hex. */
- val_print (register_type (current_gdbarch, i), virtual_buffer, 0, 0,
+ val_print (register_type (current_gdbarch, i), buffer, 0, 0,
file, 'x', 1, 0, Val_pretty_default);
/* If not a vector register, print it also according to its
natural format. */
if (TYPE_VECTOR (register_type (current_gdbarch, i)) == 0)
{
fprintf_filtered (file, "\t");
- val_print (register_type (current_gdbarch, i), virtual_buffer, 0, 0,
+ val_print (register_type (current_gdbarch, i), buffer, 0, 0,
file, 0, 1, 0, Val_pretty_default);
}
}
error ("Not killed.");
}
+ /* Clear out solib state. Otherwise the solib state of the previous
+ inferior might have survived and is entirely wrong for the new
+ target. This has been observed on Linux using glibc 2.3. How to
+ reproduce:
+
+ bash$ ./foo&
+ [1] 4711
+ bash$ ./foo&
+ [1] 4712
+ bash$ gdb ./foo
+ [...]
+ (gdb) attach 4711
+ (gdb) detach
+ (gdb) attach 4712
+ Cannot access memory at address 0xdeadbeef
+ */
+#ifdef CLEAR_SOLIB
+ CLEAR_SOLIB ();
+#endif
+
target_attach (args, from_tty);
/* Set up the "saved terminal modes" of the inferior
based on what modes we are starting it with. */
target_terminal_init ();
- /* Install inferior's terminal modes. */
- target_terminal_inferior ();
-
/* Set up execution context to know that we should return from
wait_for_inferior as soon as the target reports a stop. */
init_wait_for_inferior ();
*/
target_post_attach (PIDGET (inferior_ptid));
+ /* Install inferior's terminal modes. */
+ target_terminal_inferior ();
+
normal_stop ();
- if (attach_hook)
- attach_hook ();
+ if (deprecated_attach_hook)
+ deprecated_attach_hook ();
}
/*
static void
detach_command (char *args, int from_tty)
{
- dont_repeat (); /* Not for the faint of heart */
+ dont_repeat (); /* Not for the faint of heart. */
target_detach (args, from_tty);
#if defined(SOLIB_RESTART)
SOLIB_RESTART ();
#endif
- if (detach_hook)
- detach_hook ();
+ if (deprecated_detach_hook)
+ deprecated_detach_hook ();
}
/* Disconnect from the current target without resuming it (leaving it
#if defined(SOLIB_RESTART)
SOLIB_RESTART ();
#endif
- if (detach_hook)
- detach_hook ();
+ if (deprecated_detach_hook)
+ deprecated_detach_hook ();
}
/* Stop the execution of the target while running in async mode, in
void
interrupt_target_command (char *args, int from_tty)
{
- if (event_loop_p && target_can_async_p ())
+ if (target_can_async_p ())
{
dont_repeat (); /* Not for the faint of heart */
target_stop ();
static void
float_info (char *args, int from_tty)
{
- print_float_info (current_gdbarch, gdb_stdout, deprecated_selected_frame, args);
+ print_float_info (current_gdbarch, gdb_stdout,
+ deprecated_selected_frame, args);
}
\f
static void
&setlist);
set_cmd_completer (c, filename_completer);
set_cmd_sfunc (c, notice_args_set);
- c = add_show_from_set (c, &showlist);
+ c = deprecated_add_show_from_set (c, &showlist);
set_cmd_sfunc (c, notice_args_read);
c = add_cmd
add_com ("R", class_run, run_no_args_command,
"Start debugged program with no arguments.");
+ c = add_com ("start", class_run, start_command,
+ "\
+Run the debugged program until the beginning of the main procedure.\n\
+You may specify arguments to give to your program, just as with the\n\
+\"run\" command.");
+ set_cmd_completer (c, filename_completer);
+
add_com ("interrupt", class_run, interrupt_target_command,
"Interrupt the execution of the debugged program.");
projects / deliverable / binutils-gdb.git / blobdiff