diff options
Diffstat (limited to 'gdb/infcmd.c')
| -rw-r--r-- | gdb/infcmd.c | 2046 |
1 files changed, 0 insertions, 2046 deletions
diff --git a/gdb/infcmd.c b/gdb/infcmd.c deleted file mode 100644 index 02384483822..00000000000 --- a/gdb/infcmd.c +++ /dev/null @@ -1,2046 +0,0 @@ -/* 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 - Free Software Foundation, Inc. - - This file is part of GDB. - - This program is free software; you can redistribute it and/or modify - it under the terms of the GNU General Public License as published by - the Free Software Foundation; either version 2 of the License, or - (at your option) any later version. - - This program is distributed in the hope that it will be useful, - but WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - GNU General Public License for more details. - - You should have received a copy of the GNU General Public License - along with this program; if not, write to the Free Software - Foundation, Inc., 59 Temple Place - Suite 330, - Boston, MA 02111-1307, USA. */ - -#include "defs.h" -#include <signal.h> -#include "gdb_string.h" -#include "symtab.h" -#include "gdbtypes.h" -#include "frame.h" -#include "inferior.h" -#include "environ.h" -#include "value.h" -#include "gdbcmd.h" -#include "symfile.h" -#include "gdbcore.h" -#include "target.h" -#include "language.h" -#include "symfile.h" -#include "objfiles.h" -#include "completer.h" -#include "ui-out.h" -#include "event-top.h" -#include "parser-defs.h" - -/* Functions exported for general use: */ - -void nofp_registers_info (char *, int); - -void all_registers_info (char *, int); - -void registers_info (char *, int); - -/* Local functions: */ - -void continue_command (char *, int); - -static void print_return_value (int struct_return, struct type *value_type); - -static void finish_command_continuation (struct continuation_arg *); - -static void until_next_command (int); - -static void until_command (char *, int); - -static void path_info (char *, int); - -static void path_command (char *, int); - -static void unset_command (char *, int); - -static void float_info (char *, int); - -static void detach_command (char *, int); - -static void interrupt_target_command (char *args, int from_tty); - -static void unset_environment_command (char *, int); - -static void set_environment_command (char *, int); - -static void environment_info (char *, int); - -static void program_info (char *, int); - -static void finish_command (char *, int); - -static void signal_command (char *, int); - -static void jump_command (char *, int); - -static void step_1 (int, int, char *); -static void step_once (int skip_subroutines, int single_inst, int count); -static void step_1_continuation (struct continuation_arg *arg); - -void nexti_command (char *, int); - -void stepi_command (char *, int); - -static void next_command (char *, int); - -static void step_command (char *, int); - -static void run_command (char *, int); - -static void run_no_args_command (char *args, int from_tty); - -static void go_command (char *line_no, int from_tty); - -static int strip_bg_char (char **); - -void _initialize_infcmd (void); - -#define GO_USAGE "Usage: go <location>\n" - -static void breakpoint_auto_delete_contents (PTR); - -#define ERROR_NO_INFERIOR \ - if (!target_has_execution) error ("The program is not being run."); - -/* String containing arguments to give to the program, separated by spaces. - Empty string (pointer to '\0') means no args. */ - -static char *inferior_args; - -/* The inferior arguments as a vector. If INFERIOR_ARGC is nonzero, - then we must compute INFERIOR_ARGS from this (via the target). */ - -static int inferior_argc; -static char **inferior_argv; - -/* File name for default use for standard in/out in the inferior. */ - -char *inferior_io_terminal; - -/* Pid of our debugged inferior, or 0 if no inferior now. - Since various parts of infrun.c test this to see whether there is a program - being debugged it should be nonzero (currently 3 is used) for remote - debugging. */ - -ptid_t inferior_ptid; - -/* Last signal that the inferior received (why it stopped). */ - -enum target_signal stop_signal; - -/* Address at which inferior stopped. */ - -CORE_ADDR stop_pc; - -/* Chain containing status of breakpoint(s) that we have stopped at. */ - -bpstat stop_bpstat; - -/* Flag indicating that a command has proceeded the inferior past the - current breakpoint. */ - -int breakpoint_proceeded; - -/* Nonzero if stopped due to a step command. */ - -int stop_step; - -/* Nonzero if stopped due to completion of a stack dummy routine. */ - -int stop_stack_dummy; - -/* Nonzero if stopped due to a random (unexpected) signal in inferior - process. */ - -int stopped_by_random_signal; - -/* Range to single step within. - If this is nonzero, respond to a single-step signal - by continuing to step if the pc is in this range. */ - -CORE_ADDR step_range_start; /* Inclusive */ -CORE_ADDR step_range_end; /* Exclusive */ - -/* Stack frame address as of when stepping command was issued. - This is how we know when we step into a subroutine call, - and how to set the frame for the breakpoint used to step out. */ - -CORE_ADDR step_frame_address; - -/* 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 - so don't print frame next time inferior stops - if it stops due to stepping. */ - -int step_multi; - -/* Environment to use for running inferior, - in format described in environ.h. */ - -struct environ *inferior_environ; - -/* Accessor routines. */ - -char * -get_inferior_args (void) -{ - if (inferior_argc != 0) - { - char *n, *old; - - n = gdbarch_construct_inferior_arguments (current_gdbarch, - inferior_argc, inferior_argv); - old = set_inferior_args (n); - xfree (old); - } - - if (inferior_args == NULL) - inferior_args = xstrdup (""); - - return inferior_args; -} - -char * -set_inferior_args (char *newargs) -{ - char *saved_args = inferior_args; - - inferior_args = newargs; - inferior_argc = 0; - inferior_argv = 0; - - return saved_args; -} - -void -set_inferior_args_vector (int argc, char **argv) -{ - inferior_argc = argc; - inferior_argv = argv; -} - -/* Notice when `set args' is run. */ -static void -notice_args_set (char *args, int from_tty, struct cmd_list_element *c) -{ - inferior_argc = 0; - inferior_argv = 0; -} - -/* Notice when `show args' is run. */ -static void -notice_args_read (char *args, int from_tty, struct cmd_list_element *c) -{ - /* Might compute the value. */ - get_inferior_args (); -} - - -/* Compute command-line string given argument vector. This does the - same shell processing as fork_inferior. */ -/* ARGSUSED */ -char * -construct_inferior_arguments (struct gdbarch *gdbarch, int argc, char **argv) -{ - char *result; - - if (STARTUP_WITH_SHELL) - { - /* This holds all the characters considered special to the - typical Unix shells. We include `^' because the SunOS - /bin/sh treats it as a synonym for `|'. */ - char *special = "\"!#$&*()\\|[]{}<>?'\"`~^; \t\n"; - int i; - int length = 0; - char *out, *cp; - - /* We over-compute the size. It shouldn't matter. */ - for (i = 0; i < argc; ++i) - length += 2 * strlen (argv[i]) + 1; - - result = (char *) xmalloc (length); - out = result; - - for (i = 0; i < argc; ++i) - { - if (i > 0) - *out++ = ' '; - - for (cp = argv[i]; *cp; ++cp) - { - if (strchr (special, *cp) != NULL) - *out++ = '\\'; - *out++ = *cp; - } - } - *out = '\0'; - } - else - { - /* In this case we can't handle arguments that contain spaces, - tabs, or newlines -- see breakup_args(). */ - int i; - int length = 0; - - for (i = 0; i < argc; ++i) - { - char *cp = strchr (argv[i], ' '); - if (cp == NULL) - cp = strchr (argv[i], '\t'); - if (cp == NULL) - cp = strchr (argv[i], '\n'); - if (cp != NULL) - error ("can't handle command-line argument containing whitespace"); - length += strlen (argv[i]) + 1; - } - - result = (char *) xmalloc (length); - result[0] = '\0'; - for (i = 0; i < argc; ++i) - { - if (i > 0) - strcat (result, " "); - strcat (result, argv[i]); - } - } - - return result; -} - - -/* This function detects whether or not a '&' character (indicating - background execution) has been added as *the last* of the arguments ARGS - of a command. If it has, it removes it and returns 1. Otherwise it - does nothing and returns 0. */ -static int -strip_bg_char (char **args) -{ - char *p = NULL; - - p = strchr (*args, '&'); - - if (p) - { - if (p == (*args + strlen (*args) - 1)) - { - if (strlen (*args) > 1) - { - do - p--; - while (*p == ' ' || *p == '\t'); - *(p + 1) = '\0'; - } - else - *args = 0; - return 1; - } - } - return 0; -} - -/* ARGSUSED */ -void -tty_command (char *file, int from_tty) -{ - if (file == 0) - error_no_arg ("terminal name for running target process"); - - inferior_io_terminal = savestring (file, strlen (file)); -} - -static void -run_command (char *args, int from_tty) -{ - char *exec_file; - - dont_repeat (); - - if (! ptid_equal (inferior_ptid, null_ptid) && target_has_execution) - { - if (from_tty - && !query ("The program being debugged has been started already.\n\ -Start it from the beginning? ")) - error ("Program not restarted."); - target_kill (); -#if defined(SOLIB_RESTART) - SOLIB_RESTART (); -#endif - init_wait_for_inferior (); - } - - clear_breakpoint_hit_counts (); - - /* Purge old solib objfiles. */ - objfile_purge_solibs (); - - do_run_cleanups (NULL); - - /* The comment here used to read, "The exec file is re-read every - time we do a generic_mourn_inferior, so we just have to worry - about the symbol file." The `generic_mourn_inferior' function - gets called whenever the program exits. However, suppose the - program exits, and *then* the executable file changes? We need - to check again here. Since reopen_exec_file doesn't do anything - if the timestamp hasn't changed, I don't see the harm. */ - reopen_exec_file (); - reread_symbols (); - - exec_file = (char *) get_exec_file (0); - - /* We keep symbols from add-symbol-file, on the grounds that the - user might want to add some symbols before running the program - (right?). But sometimes (dynamic loading where the user manually - introduces the new symbols with add-symbol-file), the code which - the symbols describe does not persist between runs. Currently - the user has to manually nuke all symbols between runs if they - want them to go away (PR 2207). This is probably reasonable. */ - - if (!args) - { - if (event_loop_p && target_can_async_p ()) - async_disable_stdin (); - } - else - { - int async_exec = strip_bg_char (&args); - - /* 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 ()) - 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 ()) - { - /* Simulate synchronous execution */ - async_disable_stdin (); - } - - /* If there were other args, beside '&', process them. */ - if (args) - { - char *old_args = set_inferior_args (xstrdup (args)); - xfree (old_args); - } - } - - if (from_tty) - { - ui_out_field_string (uiout, NULL, "Starting program"); - ui_out_text (uiout, ": "); - if (exec_file) - ui_out_field_string (uiout, "execfile", exec_file); - ui_out_spaces (uiout, 1); - /* We call get_inferior_args() because we might need to compute - the value now. */ - ui_out_field_string (uiout, "infargs", get_inferior_args ()); - ui_out_text (uiout, "\n"); - ui_out_flush (uiout); - } - - /* 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)); -} - - -static void -run_no_args_command (char *args, int from_tty) -{ - char *old_args = set_inferior_args (xstrdup ("")); - xfree (old_args); -} - - -void -continue_command (char *proc_count_exp, int from_tty) -{ - int async_exec = 0; - ERROR_NO_INFERIOR; - - /* Find out whether we must run in the background. */ - if (proc_count_exp != NULL) - async_exec = strip_bg_char (&proc_count_exp); - - /* 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 ()) - 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 ()) - { - /* Simulate synchronous execution */ - async_disable_stdin (); - } - - /* If have argument (besides '&'), set proceed count of breakpoint - we stopped at. */ - if (proc_count_exp != NULL) - { - bpstat bs = stop_bpstat; - int num = bpstat_num (&bs); - if (num == 0 && from_tty) - { - printf_filtered - ("Not stopped at any breakpoint; argument ignored.\n"); - } - while (num != 0) - { - set_ignore_count (num, - parse_and_eval_long (proc_count_exp) - 1, - from_tty); - /* set_ignore_count prints a message ending with a period. - So print two spaces before "Continuing.". */ - if (from_tty) - printf_filtered (" "); - num = bpstat_num (&bs); - } - } - - if (from_tty) - printf_filtered ("Continuing.\n"); - - clear_proceed_status (); - - proceed ((CORE_ADDR) -1, TARGET_SIGNAL_DEFAULT, 0); -} - -/* Step until outside of current statement. */ - -/* ARGSUSED */ -static void -step_command (char *count_string, int from_tty) -{ - step_1 (0, 0, count_string); -} - -/* Likewise, but skip over subroutine calls as if single instructions. */ - -/* ARGSUSED */ -static void -next_command (char *count_string, int from_tty) -{ - step_1 (1, 0, count_string); -} - -/* Likewise, but step only one instruction. */ - -/* ARGSUSED */ -void -stepi_command (char *count_string, int from_tty) -{ - step_1 (0, 1, count_string); -} - -/* ARGSUSED */ -void -nexti_command (char *count_string, int from_tty) -{ - step_1 (1, 1, count_string); -} - -static void -disable_longjmp_breakpoint_cleanup (void *ignore) -{ - disable_longjmp_breakpoint (); -} - -static void -step_1 (int skip_subroutines, int single_inst, char *count_string) -{ - register int count = 1; - struct frame_info *frame; - struct cleanup *cleanups = 0; - int async_exec = 0; - - ERROR_NO_INFERIOR; - - if (count_string) - async_exec = strip_bg_char (&count_string); - - /* 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 ()) - 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 ()) - { - /* Simulate synchronous execution */ - async_disable_stdin (); - } - - count = count_string ? parse_and_eval_long (count_string) : 1; - - if (!single_inst || skip_subroutines) /* leave si command alone */ - { - enable_longjmp_breakpoint (); - if (!event_loop_p || !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 ()) - { - for (; count > 0; count--) - { - clear_proceed_status (); - - frame = get_current_frame (); - if (!frame) /* Avoid coredump here. Why tho? */ - error ("No current frame"); - step_frame_address = FRAME_FP (frame); - step_sp = read_sp (); - - if (!single_inst) - { - find_pc_line_pc_range (stop_pc, &step_range_start, &step_range_end); - if (step_range_end == 0) - { - char *name; - if (find_pc_partial_function (stop_pc, &name, &step_range_start, - &step_range_end) == 0) - error ("Cannot find bounds of current function"); - - target_terminal_ours (); - printf_filtered ("\ -Single stepping until exit from function %s, \n\ -which has no line number information.\n", name); - } - } - else - { - /* Say we are stepping, but stop after one insn whatever it does. */ - step_range_start = step_range_end = 1; - if (!skip_subroutines) - /* It is stepi. - Don't step over function calls, not even to functions lacking - line numbers. */ - step_over_calls = STEP_OVER_NONE; - } - - if (skip_subroutines) - step_over_calls = STEP_OVER_ALL; - - step_multi = (count > 1); - proceed ((CORE_ADDR) -1, TARGET_SIGNAL_DEFAULT, 1); - - if (!stop_step) - break; - - /* FIXME: On nexti, this may have already been done (when we hit the - step resume break, I think). Probably this should be moved to - wait_for_inferior (near the top). */ -#if defined (SHIFT_INST_REGS) - SHIFT_INST_REGS (); -#endif - } - - if (!single_inst || skip_subroutines) - do_cleanups (cleanups); - return; - } - /* In case of asynchronous target things get complicated, do only - one step for now, before returning control to the event loop. Let - the continuation figure out how many other steps we need to do, - and handle them one at the time, through step_once(). */ - else - { - if (event_loop_p && target_can_async_p ()) - step_once (skip_subroutines, single_inst, count); - } -} - -/* Called after we are done with one step operation, to check whether - we need to step again, before we print the prompt and return control - to the user. If count is > 1, we will need to do one more call to - proceed(), via step_once(). Basically it is like step_once and - step_1_continuation are co-recursive. */ -static void -step_1_continuation (struct continuation_arg *arg) -{ - int count; - int skip_subroutines; - int single_inst; - - skip_subroutines = arg->data.integer; - single_inst = arg->next->data.integer; - count = arg->next->next->data.integer; - - if (stop_step) - { - /* FIXME: On nexti, this may have already been done (when we hit the - step resume break, I think). Probably this should be moved to - wait_for_inferior (near the top). */ -#if defined (SHIFT_INST_REGS) - SHIFT_INST_REGS (); -#endif - step_once (skip_subroutines, single_inst, count - 1); - } - else - if (!single_inst || skip_subroutines) - do_exec_cleanups (ALL_CLEANUPS); -} - -/* Do just one step operation. If count >1 we will have to set up a - continuation to be done after the target stops (after this one - step). This is useful to implement the 'step n' kind of commands, in - case of asynchronous targets. We had to split step_1 into two parts, - one to be done before proceed() and one afterwards. This function is - called in case of step n with n>1, after the first step operation has - been completed.*/ -static void -step_once (int skip_subroutines, int single_inst, int count) -{ - struct continuation_arg *arg1; - struct continuation_arg *arg2; - struct continuation_arg *arg3; - struct frame_info *frame; - - if (count > 0) - { - clear_proceed_status (); - - frame = get_current_frame (); - if (!frame) /* Avoid coredump here. Why tho? */ - error ("No current frame"); - step_frame_address = FRAME_FP (frame); - step_sp = read_sp (); - - if (!single_inst) - { - find_pc_line_pc_range (stop_pc, &step_range_start, &step_range_end); - - /* If we have no line info, switch to stepi mode. */ - if (step_range_end == 0 && step_stop_if_no_debug) - { - step_range_start = step_range_end = 1; - } - else if (step_range_end == 0) - { - char *name; - if (find_pc_partial_function (stop_pc, &name, &step_range_start, - &step_range_end) == 0) - error ("Cannot find bounds of current function"); - - target_terminal_ours (); - printf_filtered ("\ -Single stepping until exit from function %s, \n\ -which has no line number information.\n", name); - } - } - else - { - /* Say we are stepping, but stop after one insn whatever it does. */ - step_range_start = step_range_end = 1; - if (!skip_subroutines) - /* It is stepi. - Don't step over function calls, not even to functions lacking - line numbers. */ - step_over_calls = STEP_OVER_NONE; - } - - if (skip_subroutines) - step_over_calls = STEP_OVER_ALL; - - step_multi = (count > 1); - arg1 = - (struct continuation_arg *) xmalloc (sizeof (struct continuation_arg)); - arg2 = - (struct continuation_arg *) xmalloc (sizeof (struct continuation_arg)); - arg3 = - (struct continuation_arg *) xmalloc (sizeof (struct continuation_arg)); - arg1->next = arg2; - arg1->data.integer = skip_subroutines; - arg2->next = arg3; - arg2->data.integer = single_inst; - arg3->next = NULL; - arg3->data.integer = count; - add_intermediate_continuation (step_1_continuation, arg1); - proceed ((CORE_ADDR) -1, TARGET_SIGNAL_DEFAULT, 1); - } -} - - -/* Continue program at specified address. */ - -static void -jump_command (char *arg, int from_tty) -{ - register CORE_ADDR addr; - struct symtabs_and_lines sals; - struct symtab_and_line sal; - struct symbol *fn; - struct symbol *sfn; - int async_exec = 0; - - ERROR_NO_INFERIOR; - - /* Find out whether we must run in the background. */ - if (arg != NULL) - async_exec = strip_bg_char (&arg); - - /* 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 ()) - 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 ()) - { - /* Simulate synchronous execution */ - async_disable_stdin (); - } - - if (!arg) - error_no_arg ("starting address"); - - sals = decode_line_spec_1 (arg, 1); - if (sals.nelts != 1) - { - error ("Unreasonable jump request"); - } - - sal = sals.sals[0]; - xfree (sals.sals); - - if (sal.symtab == 0 && sal.pc == 0) - error ("No source file has been specified."); - - resolve_sal_pc (&sal); /* May error out */ - - /* See if we are trying to jump to another function. */ - fn = get_frame_function (get_current_frame ()); - sfn = find_pc_function (sal.pc); - if (fn != NULL && sfn != fn) - { - if (!query ("Line %d is not in `%s'. Jump anyway? ", sal.line, - SYMBOL_SOURCE_NAME (fn))) - { - error ("Not confirmed."); - /* NOTREACHED */ - } - } - - if (sfn != NULL) - { - fixup_symbol_section (sfn, 0); - if (section_is_overlay (SYMBOL_BFD_SECTION (sfn)) && - !section_is_mapped (SYMBOL_BFD_SECTION (sfn))) - { - if (!query ("WARNING!!! Destination is in unmapped overlay! Jump anyway? ")) - { - error ("Not confirmed."); - /* NOTREACHED */ - } - } - } - - addr = sal.pc; - - if (from_tty) - { - printf_filtered ("Continuing at "); - print_address_numeric (addr, 1, gdb_stdout); - printf_filtered (".\n"); - } - - clear_proceed_status (); - proceed (addr, TARGET_SIGNAL_0, 0); -} - - -/* Go to line or address in current procedure */ -static void -go_command (char *line_no, int from_tty) -{ - if (line_no == (char *) NULL || !*line_no) - printf_filtered (GO_USAGE); - else - { - tbreak_command (line_no, from_tty); - jump_command (line_no, from_tty); - } -} - - -/* Continue program giving it specified signal. */ - -static void -signal_command (char *signum_exp, int from_tty) -{ - enum target_signal oursig; - - dont_repeat (); /* Too dangerous. */ - ERROR_NO_INFERIOR; - - if (!signum_exp) - error_no_arg ("signal number"); - - /* It would be even slicker to make signal names be valid expressions, - (the type could be "enum $signal" or some such), then the user could - assign them to convenience variables. */ - oursig = target_signal_from_name (signum_exp); - - if (oursig == TARGET_SIGNAL_UNKNOWN) - { - /* No, try numeric. */ - int num = parse_and_eval_long (signum_exp); - - if (num == 0) - oursig = TARGET_SIGNAL_0; - else - oursig = target_signal_from_command (num); - } - - if (from_tty) - { - if (oursig == TARGET_SIGNAL_0) - printf_filtered ("Continuing with no signal.\n"); - else - printf_filtered ("Continuing with signal %s.\n", - target_signal_to_name (oursig)); - } - - clear_proceed_status (); - /* "signal 0" should not get stuck if we are stopped at a breakpoint. - FIXME: Neither should "signal foo" but when I tried passing - (CORE_ADDR)-1 unconditionally I got a testsuite failure which I haven't - tried to track down yet. */ - proceed (oursig == TARGET_SIGNAL_0 ? (CORE_ADDR) -1 : stop_pc, oursig, 0); -} - -/* Call breakpoint_auto_delete on the current contents of the bpstat - pointed to by arg (which is really a bpstat *). */ - -static void -breakpoint_auto_delete_contents (PTR arg) -{ - breakpoint_auto_delete (*(bpstat *) arg); -} - - -/* Execute a "stack dummy", a piece of code stored in the stack - by the debugger to be executed in the inferior. - - To call: first, do PUSH_DUMMY_FRAME. - Then push the contents of the dummy. It should end with a breakpoint insn. - Then call here, passing address at which to start the dummy. - - The contents of all registers are saved before the dummy frame is popped - and copied into the buffer BUFFER. - - The dummy's frame is automatically popped whenever that break is hit. - If that is the first time the program stops, run_stack_dummy - returns to its caller with that frame already gone and returns 0. - - Otherwise, run_stack-dummy returns a non-zero value. - If the called function receives a random signal, we do not allow the user - to continue executing it as this may not work. The dummy frame is poped - and we return 1. - If we hit a breakpoint, we leave the frame in place and return 2 (the frame - will eventually be popped when we do hit the dummy end breakpoint). */ - -int -run_stack_dummy (CORE_ADDR addr, char *buffer) -{ - struct cleanup *old_cleanups = make_cleanup (null_cleanup, 0); - int saved_async = 0; - - /* Now proceed, having reached the desired place. */ - clear_proceed_status (); - - if (CALL_DUMMY_BREAKPOINT_OFFSET_P) - { - struct breakpoint *bpt; - struct symtab_and_line sal; - - INIT_SAL (&sal); /* initialize to zeroes */ - if (CALL_DUMMY_LOCATION == AT_ENTRY_POINT) - { - sal.pc = CALL_DUMMY_ADDRESS (); - } - else - { - sal.pc = addr - CALL_DUMMY_START_OFFSET + CALL_DUMMY_BREAKPOINT_OFFSET; - } - sal.section = find_pc_overlay (sal.pc); - - /* Set up a FRAME for the dummy frame so we can pass it to - set_momentary_breakpoint. We need to give the breakpoint a - frame in case there is only one copy of the dummy (e.g. - CALL_DUMMY_LOCATION == AFTER_TEXT_END). */ - flush_cached_frames (); - set_current_frame (create_new_frame (read_fp (), sal.pc)); - - /* If defined, CALL_DUMMY_BREAKPOINT_OFFSET is where we need to put - a breakpoint instruction. If not, the call dummy already has the - breakpoint instruction in it. - - addr is the address of the call dummy plus the CALL_DUMMY_START_OFFSET, - so we need to subtract the CALL_DUMMY_START_OFFSET. */ - bpt = set_momentary_breakpoint (sal, - get_current_frame (), - bp_call_dummy); - bpt->disposition = disp_del; - - /* If all error()s out of proceed ended up calling normal_stop (and - perhaps they should; it already does in the special case of error - out of resume()), then we wouldn't need this. */ - make_cleanup (breakpoint_auto_delete_contents, &stop_bpstat); - } - - disable_watchpoints_before_interactive_call_start (); - proceed_to_finish = 1; /* We want stop_registers, please... */ - - if (target_can_async_p ()) - saved_async = target_async_mask (0); - - proceed (addr, TARGET_SIGNAL_0, 0); - - if (saved_async) - target_async_mask (saved_async); - - enable_watchpoints_after_interactive_call_stop (); - - discard_cleanups (old_cleanups); - - /* We can stop during an inferior call because a signal is received. */ - if (stopped_by_random_signal) - return 1; - - /* We may also stop prematurely because we hit a breakpoint in the - called routine. */ - if (!stop_stack_dummy) - return 2; - - /* On normal return, the stack dummy has been popped already. */ - - memcpy (buffer, stop_registers, REGISTER_BYTES); - return 0; -} - -/* Proceed until we reach a different source line with pc greater than - our current one or exit the function. We skip calls in both cases. - - Note that eventually this command should probably be changed so - that only source lines are printed out when we hit the breakpoint - we set. This may involve changes to wait_for_inferior and the - proceed status code. */ - -/* ARGSUSED */ -static void -until_next_command (int from_tty) -{ - struct frame_info *frame; - CORE_ADDR pc; - struct symbol *func; - struct symtab_and_line sal; - - clear_proceed_status (); - - frame = get_current_frame (); - - /* Step until either exited from this function or greater - than the current line (if in symbolic section) or pc (if - not). */ - - pc = read_pc (); - func = find_pc_function (pc); - - if (!func) - { - struct minimal_symbol *msymbol = lookup_minimal_symbol_by_pc (pc); - - if (msymbol == NULL) - error ("Execution is not within a known function."); - - step_range_start = SYMBOL_VALUE_ADDRESS (msymbol); - step_range_end = pc; - } - else - { - sal = find_pc_line (pc, 0); - - step_range_start = BLOCK_START (SYMBOL_BLOCK_VALUE (func)); - step_range_end = sal.end; - } - - step_over_calls = STEP_OVER_ALL; - step_frame_address = FRAME_FP (frame); - step_sp = read_sp (); - - step_multi = 0; /* Only one call to proceed */ - - proceed ((CORE_ADDR) -1, TARGET_SIGNAL_DEFAULT, 1); -} - -static void -until_command (char *arg, int from_tty) -{ - int async_exec = 0; - - if (!target_has_execution) - error ("The program is not running."); - - /* Find out whether we must run in the background. */ - if (arg != NULL) - async_exec = strip_bg_char (&arg); - - /* 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 ()) - 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 ()) - { - /* Simulate synchronous execution */ - async_disable_stdin (); - } - - if (arg) - until_break_command (arg, from_tty); - else - until_next_command (from_tty); -} - - -/* Print the result of a function at the end of a 'finish' command. */ -static void -print_return_value (int structure_return, struct type *value_type) -{ - struct value *value; - static struct ui_stream *stb = NULL; - - if (!structure_return) - { - value = value_being_returned (value_type, stop_registers, structure_return); - stb = ui_out_stream_new (uiout); - 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"); - } - else - { - /* 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 */ -#ifdef VALUE_RETURNED_FROM_STACK - value = 0; - 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"); -#else - value = value_being_returned (value_type, stop_registers, structure_return); - stb = ui_out_stream_new (uiout); - 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"); -#endif - } -} - -/* Stuff that needs to be done by the finish command after the target - has stopped. In asynchronous mode, we wait for the target to stop in - the call to poll or select in the event loop, so it is impossible to - do all the stuff as part of the finish_command function itself. The - only chance we have to complete this command is in - fetch_inferior_event, which is called by the event loop as soon as it - detects that the target has stopped. This function is called via the - cmd_continuation pointer. */ -void -finish_command_continuation (struct continuation_arg *arg) -{ - register struct symbol *function; - struct breakpoint *breakpoint; - struct cleanup *cleanups; - - breakpoint = (struct breakpoint *) arg->data.pointer; - function = (struct symbol *) arg->next->data.pointer; - cleanups = (struct cleanup *) arg->next->next->data.pointer; - - if (bpstat_find_breakpoint (stop_bpstat, breakpoint) != NULL - && function != 0) - { - struct type *value_type; - CORE_ADDR funcaddr; - int struct_return; - - value_type = TYPE_TARGET_TYPE (SYMBOL_TYPE (function)); - if (!value_type) - internal_error (__FILE__, __LINE__, - "finish_command: function has no target type"); - - if (TYPE_CODE (value_type) == TYPE_CODE_VOID) - { - do_exec_cleanups (cleanups); - return; - } - - funcaddr = BLOCK_START (SYMBOL_BLOCK_VALUE (function)); - - struct_return = using_struct_return (value_of_variable (function, NULL), - funcaddr, - check_typedef (value_type), - BLOCK_GCC_COMPILED (SYMBOL_BLOCK_VALUE (function))); - - print_return_value (struct_return, value_type); - } - do_exec_cleanups (cleanups); -} - -/* "finish": Set a temporary breakpoint at the place - the selected frame will return to, then continue. */ - -static void -finish_command (char *arg, int from_tty) -{ - struct symtab_and_line sal; - register struct frame_info *frame; - register struct symbol *function; - struct breakpoint *breakpoint; - struct cleanup *old_chain; - struct continuation_arg *arg1, *arg2, *arg3; - - int async_exec = 0; - - /* Find out whether we must run in the background. */ - if (arg != NULL) - async_exec = strip_bg_char (&arg); - - /* 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 ()) - 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 ()) - { - /* Simulate synchronous execution */ - async_disable_stdin (); - } - - if (arg) - error ("The \"finish\" command does not take any arguments."); - if (!target_has_execution) - error ("The program is not running."); - if (selected_frame == NULL) - error ("No selected frame."); - - frame = get_prev_frame (selected_frame); - if (frame == 0) - error ("\"finish\" not meaningful in the outermost frame."); - - clear_proceed_status (); - - sal = find_pc_line (frame->pc, 0); - sal.pc = frame->pc; - - breakpoint = set_momentary_breakpoint (sal, frame, bp_finish); - - if (!event_loop_p || !target_can_async_p ()) - old_chain = make_cleanup_delete_breakpoint (breakpoint); - else - old_chain = make_exec_cleanup_delete_breakpoint (breakpoint); - - /* Find the function we will return from. */ - - function = find_pc_function (selected_frame->pc); - - /* Print info on the selected frame, including level number - but not source. */ - if (from_tty) - { - printf_filtered ("Run till exit from "); - print_stack_frame (selected_frame, selected_frame_level, 0); - } - - /* 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 ()) - { - arg1 = - (struct continuation_arg *) xmalloc (sizeof (struct continuation_arg)); - arg2 = - (struct continuation_arg *) xmalloc (sizeof (struct continuation_arg)); - arg3 = - (struct continuation_arg *) xmalloc (sizeof (struct continuation_arg)); - arg1->next = arg2; - arg2->next = arg3; - arg3->next = NULL; - arg1->data.pointer = breakpoint; - arg2->data.pointer = function; - arg3->data.pointer = old_chain; - add_continuation (finish_command_continuation, arg1); - } - - proceed_to_finish = 1; /* We want stop_registers, please... */ - proceed ((CORE_ADDR) -1, TARGET_SIGNAL_DEFAULT, 0); - - /* 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 ()) - { - - /* Did we stop at our breakpoint? */ - if (bpstat_find_breakpoint (stop_bpstat, breakpoint) != NULL - && function != 0) - { - struct type *value_type; - CORE_ADDR funcaddr; - int struct_return; - - value_type = TYPE_TARGET_TYPE (SYMBOL_TYPE (function)); - if (!value_type) - internal_error (__FILE__, __LINE__, - "finish_command: function has no target type"); - - /* FIXME: Shouldn't we do the cleanups before returning? */ - if (TYPE_CODE (value_type) == TYPE_CODE_VOID) - return; - - funcaddr = BLOCK_START (SYMBOL_BLOCK_VALUE (function)); - - struct_return = - using_struct_return (value_of_variable (function, NULL), - funcaddr, - check_typedef (value_type), - BLOCK_GCC_COMPILED (SYMBOL_BLOCK_VALUE (function))); - - print_return_value (struct_return, value_type); - } - do_cleanups (old_chain); - } -} - -/* ARGSUSED */ -static void -program_info (char *args, int from_tty) -{ - bpstat bs = stop_bpstat; - int num = bpstat_num (&bs); - - if (!target_has_execution) - { - printf_filtered ("The program being debugged is not being run.\n"); - return; - } - - target_files_info (); - printf_filtered ("Program stopped at %s.\n", - local_hex_string ((unsigned long) stop_pc)); - if (stop_step) - printf_filtered ("It stopped after being stepped.\n"); - else if (num != 0) - { - /* There may be several breakpoints in the same place, so this - isn't as strange as it seems. */ - while (num != 0) - { - if (num < 0) - { - printf_filtered ("It stopped at a breakpoint that has "); - printf_filtered ("since been deleted.\n"); - } - else - printf_filtered ("It stopped at breakpoint %d.\n", num); - num = bpstat_num (&bs); - } - } - else if (stop_signal != TARGET_SIGNAL_0) - { - printf_filtered ("It stopped with signal %s, %s.\n", - target_signal_to_name (stop_signal), - target_signal_to_string (stop_signal)); - } - - if (!from_tty) - { - printf_filtered ("Type \"info stack\" or \"info registers\" "); - printf_filtered ("for more information.\n"); - } -} - -static void -environment_info (char *var, int from_tty) -{ - if (var) - { - register char *val = get_in_environ (inferior_environ, var); - if (val) - { - puts_filtered (var); - puts_filtered (" = "); - puts_filtered (val); - puts_filtered ("\n"); - } - else - { - puts_filtered ("Environment variable \""); - puts_filtered (var); - puts_filtered ("\" not defined.\n"); - } - } - else - { - register char **vector = environ_vector (inferior_environ); - while (*vector) - { - puts_filtered (*vector++); - puts_filtered ("\n"); - } - } -} - -static void -set_environment_command (char *arg, int from_tty) -{ - register char *p, *val, *var; - int nullset = 0; - - if (arg == 0) - error_no_arg ("environment variable and value"); - - /* Find seperation between variable name and value */ - p = (char *) strchr (arg, '='); - val = (char *) strchr (arg, ' '); - - if (p != 0 && val != 0) - { - /* We have both a space and an equals. If the space is before the - equals, walk forward over the spaces til we see a nonspace - (possibly the equals). */ - if (p > val) - while (*val == ' ') - val++; - - /* Now if the = is after the char following the spaces, - take the char following the spaces. */ - if (p > val) - p = val - 1; - } - else if (val != 0 && p == 0) - p = val; - - if (p == arg) - error_no_arg ("environment variable to set"); - - if (p == 0 || p[1] == 0) - { - nullset = 1; - if (p == 0) - p = arg + strlen (arg); /* So that savestring below will work */ - } - else - { - /* Not setting variable value to null */ - val = p + 1; - while (*val == ' ' || *val == '\t') - val++; - } - - while (p != arg && (p[-1] == ' ' || p[-1] == '\t')) - p--; - - var = savestring (arg, p - arg); - if (nullset) - { - printf_filtered ("Setting environment variable "); - printf_filtered ("\"%s\" to null value.\n", var); - set_in_environ (inferior_environ, var, ""); - } - else - set_in_environ (inferior_environ, var, val); - xfree (var); -} - -static void -unset_environment_command (char *var, int from_tty) -{ - if (var == 0) - { - /* If there is no argument, delete all environment variables. - Ask for confirmation if reading from the terminal. */ - if (!from_tty || query ("Delete all environment variables? ")) - { - free_environ (inferior_environ); - inferior_environ = make_environ (); - } - } - else - unset_in_environ (inferior_environ, var); -} - -/* Handle the execution path (PATH variable) */ - -static const char path_var_name[] = "PATH"; - -/* ARGSUSED */ -static void -path_info (char *args, int from_tty) -{ - puts_filtered ("Executable and object file path: "); - puts_filtered (get_in_environ (inferior_environ, path_var_name)); - puts_filtered ("\n"); -} - -/* Add zero or more directories to the front of the execution path. */ - -static void -path_command (char *dirname, int from_tty) -{ - char *exec_path; - char *env; - dont_repeat (); - env = get_in_environ (inferior_environ, path_var_name); - /* Can be null if path is not set */ - if (!env) - env = ""; - exec_path = xstrdup (env); - mod_path (dirname, &exec_path); - set_in_environ (inferior_environ, path_var_name, exec_path); - xfree (exec_path); - if (from_tty) - path_info ((char *) NULL, from_tty); -} - - -#ifdef REGISTER_NAMES -char *gdb_register_names[] = REGISTER_NAMES; -#endif -/* Print out the machine register regnum. If regnum is -1, - print all registers (fpregs == 1) or all non-float registers - (fpregs == 0). - - For most machines, having all_registers_info() print the - register(s) one per line is good enough. If a different format - is required, (eg, for MIPS or Pyramid 90x, which both have - lots of regs), or there is an existing convention for showing - all the registers, define the macro DO_REGISTERS_INFO(regnum, fp) - to provide that format. */ - -void -do_registers_info (int regnum, int fpregs) -{ - register int i; - int numregs = NUM_REGS + NUM_PSEUDO_REGS; - char *raw_buffer = (char*) alloca (MAX_REGISTER_RAW_SIZE); - char *virtual_buffer = (char*) alloca (MAX_REGISTER_VIRTUAL_SIZE); - - for (i = 0; i < numregs; i++) - { - /* Decide between printing all regs, nonfloat regs, or specific reg. */ - if (regnum == -1) - { - if (TYPE_CODE (REGISTER_VIRTUAL_TYPE (i)) == TYPE_CODE_FLT && !fpregs) - continue; - } - else - { - if (i != regnum) - continue; - } - - /* If the register name is empty, it is undefined for this - processor, so don't display anything. */ - if (REGISTER_NAME (i) == NULL || *(REGISTER_NAME (i)) == '\0') - continue; - - fputs_filtered (REGISTER_NAME (i), gdb_stdout); - print_spaces_filtered (15 - strlen (REGISTER_NAME (i)), gdb_stdout); - - /* Get the data in raw format. */ - if (read_relative_register_raw_bytes (i, raw_buffer)) - { - printf_filtered ("*value not available*\n"); - continue; - } - - /* Convert raw data to virtual format if necessary. */ - if (REGISTER_CONVERTIBLE (i)) - { - REGISTER_CONVERT_TO_VIRTUAL (i, REGISTER_VIRTUAL_TYPE (i), - raw_buffer, virtual_buffer); - } - else - { - memcpy (virtual_buffer, raw_buffer, - REGISTER_VIRTUAL_SIZE (i)); - } - - /* If virtual format is floating, print it that way, and in raw hex. */ - if (TYPE_CODE (REGISTER_VIRTUAL_TYPE (i)) == TYPE_CODE_FLT) - { - register int j; - - val_print (REGISTER_VIRTUAL_TYPE (i), virtual_buffer, 0, 0, - gdb_stdout, 0, 1, 0, Val_pretty_default); - - printf_filtered ("\t(raw 0x"); - for (j = 0; j < REGISTER_RAW_SIZE (i); j++) - { - register int idx = TARGET_BYTE_ORDER == BFD_ENDIAN_BIG ? j - : REGISTER_RAW_SIZE (i) - 1 - j; - printf_filtered ("%02x", (unsigned char) raw_buffer[idx]); - } - printf_filtered (")"); - } - /* Else print as integer in hex and in decimal. */ - else - { - val_print (REGISTER_VIRTUAL_TYPE (i), virtual_buffer, 0, 0, - gdb_stdout, 'x', 1, 0, Val_pretty_default); - printf_filtered ("\t"); - val_print (REGISTER_VIRTUAL_TYPE (i), virtual_buffer, 0, 0, - gdb_stdout, 0, 1, 0, Val_pretty_default); - } - - /* The SPARC wants to print even-numbered float regs as doubles - in addition to printing them as floats. */ -#ifdef PRINT_REGISTER_HOOK - PRINT_REGISTER_HOOK (i); -#endif - - printf_filtered ("\n"); - } -} - -void -registers_info (char *addr_exp, int fpregs) -{ - int regnum, numregs; - register char *end; - - if (!target_has_registers) - error ("The program has no registers now."); - if (selected_frame == NULL) - error ("No selected frame."); - - if (!addr_exp) - { - DO_REGISTERS_INFO (-1, fpregs); - return; - } - - do - { - if (addr_exp[0] == '$') - addr_exp++; - end = addr_exp; - while (*end != '\0' && *end != ' ' && *end != '\t') - ++end; - numregs = NUM_REGS + NUM_PSEUDO_REGS; - - regnum = target_map_name_to_register (addr_exp, end - addr_exp); - if (regnum >= 0) - goto found; - - regnum = numregs; - - if (*addr_exp >= '0' && *addr_exp <= '9') - regnum = atoi (addr_exp); /* Take a number */ - if (regnum >= numregs) /* Bad name, or bad number */ - error ("%.*s: invalid register", end - addr_exp, addr_exp); - - found: - DO_REGISTERS_INFO (regnum, fpregs); - - addr_exp = end; - while (*addr_exp == ' ' || *addr_exp == '\t') - ++addr_exp; - } - while (*addr_exp != '\0'); -} - -void -all_registers_info (char *addr_exp, int from_tty) -{ - registers_info (addr_exp, 1); -} - -void -nofp_registers_info (char *addr_exp, int from_tty) -{ - registers_info (addr_exp, 0); -} - - -/* - * TODO: - * Should save/restore the tty state since it might be that the - * program to be debugged was started on this tty and it wants - * the tty in some state other than what we want. If it's running - * on another terminal or without a terminal, then saving and - * restoring the tty state is a harmless no-op. - * This only needs to be done if we are attaching to a process. - */ - -/* - attach_command -- - takes a program started up outside of gdb and ``attaches'' to it. - This stops it cold in its tracks and allows us to start debugging it. - and wait for the trace-trap that results from attaching. */ - -void -attach_command (char *args, int from_tty) -{ - char *exec_file; - char *full_exec_path = NULL; - - dont_repeat (); /* Not for the faint of heart */ - - if (target_has_execution) - { - if (query ("A program is being debugged already. Kill it? ")) - target_kill (); - else - error ("Not killed."); - } - - 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 (); - clear_proceed_status (); - - /* No traps are generated when attaching to inferior under Mach 3 - or GNU hurd. */ -#ifndef ATTACH_NO_WAIT - stop_soon_quietly = 1; - wait_for_inferior (); -#endif - - /* - * If no exec file is yet known, try to determine it from the - * process itself. - */ - exec_file = (char *) get_exec_file (0); - if (!exec_file) - { - exec_file = target_pid_to_exec_file (PIDGET (inferior_ptid)); - if (exec_file) - { - /* It's possible we don't have a full path, but rather just a - filename. Some targets, such as HP-UX, don't provide the - full path, sigh. - - Attempt to qualify the filename against the source path. - (If that fails, we'll just fall back on the original - filename. Not much more we can do...) - */ - if (!source_full_path_of (exec_file, &full_exec_path)) - full_exec_path = savestring (exec_file, strlen (exec_file)); - - exec_file_attach (full_exec_path, from_tty); - symbol_file_add_main (full_exec_path, from_tty); - } - } - -#ifdef SOLIB_ADD - /* Add shared library symbols from the newly attached process, if any. */ - SOLIB_ADD ((char *) 0, from_tty, ¤t_target, auto_solib_add); - re_enable_breakpoints_in_shlibs (); -#endif - - /* Take any necessary post-attaching actions for this platform. - */ - target_post_attach (PIDGET (inferior_ptid)); - - normal_stop (); - - if (attach_hook) - attach_hook (); -} - -/* - * detach_command -- - * takes a program previously attached to and detaches it. - * The program resumes execution and will no longer stop - * on signals, etc. We better not have left any breakpoints - * in the program or it'll die when it hits one. For this - * to work, it may be necessary for the process to have been - * previously attached. It *might* work if the program was - * started via the normal ptrace (PTRACE_TRACEME). - */ - -static void -detach_command (char *args, int from_tty) -{ - 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 (); -} - -/* Stop the execution of the target while running in async mode, in - the backgound. */ - -void -interrupt_target_command_wrapper (char *args, int from_tty) -{ - interrupt_target_command (args, from_tty); -} - -static void -interrupt_target_command (char *args, int from_tty) -{ - if (event_loop_p && target_can_async_p ()) - { - dont_repeat (); /* Not for the faint of heart */ - target_stop (); - } -} - -/* ARGSUSED */ -static void -float_info (char *addr_exp, int from_tty) -{ - PRINT_FLOAT_INFO (); -} - -/* ARGSUSED */ -static void -unset_command (char *args, int from_tty) -{ - printf_filtered ("\"unset\" must be followed by the name of "); - printf_filtered ("an unset subcommand.\n"); - help_list (unsetlist, "unset ", -1, gdb_stdout); -} - -void -_initialize_infcmd (void) -{ - struct cmd_list_element *c; - - c = add_com ("tty", class_run, tty_command, - "Set terminal for future runs of program being debugged."); - c->completer = filename_completer; - - c = add_set_cmd ("args", class_run, var_string_noescape, - (char *) &inferior_args, - "Set argument list to give program being debugged when it is started.\n\ -Follow this command with any number of args, to be passed to the program.", - &setlist); - c->completer = filename_completer; - set_cmd_sfunc (c, notice_args_set); - c = add_show_from_set (c, &showlist); - set_cmd_sfunc (c, notice_args_read); - - c = add_cmd - ("environment", no_class, environment_info, - "The environment to give the program, or one variable's value.\n\ -With an argument VAR, prints the value of environment variable VAR to\n\ -give the program being debugged. With no arguments, prints the entire\n\ -environment to be given to the program.", &showlist); - c->completer = noop_completer; - - add_prefix_cmd ("unset", no_class, unset_command, - "Complement to certain \"set\" commands", - &unsetlist, "unset ", 0, &cmdlist); - - c = add_cmd ("environment", class_run, unset_environment_command, - "Cancel environment variable VAR for the program.\n\ -This does not affect the program until the next \"run\" command.", - &unsetlist); - c->completer = noop_completer; - - c = add_cmd ("environment", class_run, set_environment_command, - "Set environment variable value to give the program.\n\ -Arguments are VAR VALUE where VAR is variable name and VALUE is value.\n\ -VALUES of environment variables are uninterpreted strings.\n\ -This does not affect the program until the next \"run\" command.", - &setlist); - c->completer = noop_completer; - - c = add_com ("path", class_files, path_command, - "Add directory DIR(s) to beginning of search path for object files.\n\ -$cwd in the path means the current working directory.\n\ -This path is equivalent to the $PATH shell variable. It is a list of\n\ -directories, separated by colons. These directories are searched to find\n\ -fully linked executable files and separately compiled object files as needed."); - c->completer = filename_completer; - - c = add_cmd ("paths", no_class, path_info, - "Current search path for finding object files.\n\ -$cwd in the path means the current working directory.\n\ -This path is equivalent to the $PATH shell variable. It is a list of\n\ -directories, separated by colons. These directories are searched to find\n\ -fully linked executable files and separately compiled object files as needed.", - &showlist); - c->completer = noop_completer; - - add_com ("attach", class_run, attach_command, - "Attach to a process or file outside of GDB.\n\ -This command attaches to another target, of the same type as your last\n\ -\"target\" command (\"info files\" will show your target stack).\n\ -The command may take as argument a process id or a device file.\n\ -For a process id, you must have permission to send the process a signal,\n\ -and it must have the same effective uid as the debugger.\n\ -When using \"attach\" with a process id, the debugger finds the\n\ -program running in the process, looking first in the current working\n\ -directory, or (if not found there) using the source file search path\n\ -(see the \"directory\" command). You can also use the \"file\" command\n\ -to specify the program, and to load its symbol table."); - - add_com ("detach", class_run, detach_command, - "Detach a process or file previously attached.\n\ -If a process, it is no longer traced, and it continues its execution. If\n\ -you were debugging a file, the file is closed and gdb no longer accesses it."); - - add_com ("signal", class_run, signal_command, - "Continue program giving it signal specified by the argument.\n\ -An argument of \"0\" means continue program without giving it a signal."); - - add_com ("stepi", class_run, stepi_command, - "Step one instruction exactly.\n\ -Argument N means do this N times (or till program stops for another reason)."); - add_com_alias ("si", "stepi", class_alias, 0); - - add_com ("nexti", class_run, nexti_command, - "Step one instruction, but proceed through subroutine calls.\n\ -Argument N means do this N times (or till program stops for another reason)."); - add_com_alias ("ni", "nexti", class_alias, 0); - - add_com ("finish", class_run, finish_command, - "Execute until selected stack frame returns.\n\ -Upon return, the value returned is printed and put in the value history."); - - add_com ("next", class_run, next_command, - "Step program, proceeding through subroutine calls.\n\ -Like the \"step\" command as long as subroutine calls do not happen;\n\ -when they do, the call is treated as one instruction.\n\ -Argument N means do this N times (or till program stops for another reason)."); - add_com_alias ("n", "next", class_run, 1); - if (xdb_commands) - add_com_alias ("S", "next", class_run, 1); - - add_com ("step", class_run, step_command, - "Step program until it reaches a different source line.\n\ -Argument N means do this N times (or till program stops for another reason)."); - add_com_alias ("s", "step", class_run, 1); - - c = add_com ("until", class_run, until_command, - "Execute until the program reaches a source line greater than the current\n\ -or a specified line or address or function (same args as break command).\n\ -Execution will also stop upon exit from the current stack frame."); - c->completer = location_completer; - add_com_alias ("u", "until", class_run, 1); - - c = add_com ("jump", class_run, jump_command, - "Continue program being debugged at specified line or address.\n\ -Give as argument either LINENUM or *ADDR, where ADDR is an expression\n\ -for an address to start at."); - c->completer = location_completer; - - if (xdb_commands) - { - c = add_com ("go", class_run, go_command, - "Usage: go <location>\n\ -Continue program being debugged, stopping at specified line or \n\ -address.\n\ -Give as argument either LINENUM or *ADDR, where ADDR is an \n\ -expression for an address to start at.\n\ -This command is a combination of tbreak and jump."); - c->completer = location_completer; - } - - if (xdb_commands) - add_com_alias ("g", "go", class_run, 1); - - add_com ("continue", class_run, continue_command, - "Continue program being debugged, after signal or breakpoint.\n\ -If proceeding from breakpoint, a number N may be used as an argument,\n\ -which means to set the ignore count of that breakpoint to N - 1 (so that\n\ -the breakpoint won't break until the Nth time it is reached)."); - add_com_alias ("c", "cont", class_run, 1); - add_com_alias ("fg", "cont", class_run, 1); - - c = add_com ("run", class_run, run_command, - "Start debugged program. You may specify arguments to give it.\n\ -Args may include \"*\", or \"[...]\"; they are expanded using \"sh\".\n\ -Input and output redirection with \">\", \"<\", or \">>\" are also allowed.\n\n\ -With no arguments, uses arguments last specified (with \"run\" or \"set args\").\n\ -To cancel previous arguments and run with no arguments,\n\ -use \"set args\" without arguments."); - c->completer = filename_completer; - add_com_alias ("r", "run", class_run, 1); - if (xdb_commands) - add_com ("R", class_run, run_no_args_command, - "Start debugged program with no arguments."); - - add_com ("interrupt", class_run, interrupt_target_command, - "Interrupt the execution of the debugged program."); - - add_info ("registers", nofp_registers_info, - "List of integer registers and their contents, for selected stack frame.\n\ -Register name as argument means describe only that register."); - add_info_alias ("r", "registers", 1); - - if (xdb_commands) - add_com ("lr", class_info, nofp_registers_info, - "List of integer registers and their contents, for selected stack frame.\n\ - Register name as argument means describe only that register."); - add_info ("all-registers", all_registers_info, - "List of all registers and their contents, for selected stack frame.\n\ -Register name as argument means describe only that register."); - - add_info ("program", program_info, - "Execution status of the program."); - - add_info ("float", float_info, - "Print the status of the floating point unit\n"); - - inferior_environ = make_environ (); - init_environ (inferior_environ); -} |