riscv-gnu-toolchain/gdb.git - Unnamed repository; edit this file 'description' to name the repository.

Age	Commit message (Expand)	Author	Files	Lines
2014-03-05	Update copyright years	Alan Modra	1	-1/+1
2010-04-15	Upgrade header files to use GPLv3	Nick Clifton	1	-3/+4
2005-05-10	Update the address and phone number of the FSF organization	Nick Clifton	1	-1/+1
2001-03-14	Fix typos in ChangeLogs; add coff/external.h; fix copyright dates	Nick Clifton	1	-4/+24
1999-05-03	19990502 sourceware importbinu_ss_19990502	Richard Henderson	1	-0/+22

/* Memory-access and commands for "inferior" process, for GDB. Copyright 1986, 1987, 1988, 1989, 1991, 1992, 1995, 1996 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 <sys/param.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 "gdbcore.h" #include "target.h" #include "language.h" static void continue_command PARAMS ((char *, int)); static void until_next_command PARAMS ((int)); static void until_command PARAMS ((char *, int)); static void path_info PARAMS ((char *, int)); static void path_command PARAMS ((char *, int)); static void unset_command PARAMS ((char *, int)); static void float_info PARAMS ((char *, int)); static void detach_command PARAMS ((char *, int)); static void nofp_registers_info PARAMS ((char *, int)); static void all_registers_info PARAMS ((char *, int)); static void registers_info PARAMS ((char *, int)); #if !defined (DO_REGISTERS_INFO) static void do_registers_info PARAMS ((int, int)); #endif static void unset_environment_command PARAMS ((char *, int)); static void set_environment_command PARAMS ((char *, int)); static void environment_info PARAMS ((char *, int)); static void program_info PARAMS ((char *, int)); static void finish_command PARAMS ((char *, int)); static void signal_command PARAMS ((char *, int)); static void jump_command PARAMS ((char *, int)); static void step_1 PARAMS ((int, int, char *)); static void nexti_command PARAMS ((char *, int)); static void stepi_command PARAMS ((char *, int)); static void next_command PARAMS ((char *, int)); static void step_command PARAMS ((char *, int)); static void run_command PARAMS ((char *, int)); #ifdef CALL_DUMMY_BREAKPOINT_OFFSET static void breakpoint_auto_delete_contents PARAMS ((PTR)); #endif #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; /* 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. */ int inferior_pid; /* 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; /* 1 means step over all subroutine calls. 0 means don't step over calls (used by stepi). -1 means step over calls to undebuggable functions. */ int 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; /* ARGSUSED */ void tty_command (file, from_tty) 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 (args, from_tty) char *args; int from_tty; { char *exec_file; dont_repeat (); if (inferior_pid != 0 && target_has_execution) { if ( !query ("The program being debugged has been started already.\n\ Start it from the beginning? ")) error ("Program not restarted."); target_kill (); } clear_breakpoint_hit_counts (); exec_file = (char *) get_exec_file (0); /* The exec file is re-read every time we do a generic_mourn_inferior, so we just have to worry about the symbol file. */ reread_symbols (); /* 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) { char *cmd; cmd = concat ("set args ", args, NULL); make_cleanup (free, cmd); execute_command (cmd, from_tty); } if (from_tty) { puts_filtered("Starting program: "); if (exec_file) puts_filtered(exec_file); puts_filtered(" "); puts_filtered(inferior_args); puts_filtered("\n"); gdb_flush (gdb_stdout); } target_create_inferior (exec_file, inferior_args, environ_vector (inferior_environ)); } static void continue_command (proc_count_exp, from_tty) char *proc_count_exp; int from_tty; { ERROR_NO_INFERIOR; /* If have argument, 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_address (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 (count_string, from_tty) 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 (count_string, from_tty) char *count_string; int from_tty; { step_1 (1, 0, count_string); } /* Likewise, but step only one instruction. */ /* ARGSUSED */ static void stepi_command (count_string, from_tty) char *count_string; int from_tty; { step_1 (0, 1, count_string); } /* ARGSUSED */ static void nexti_command (count_string, from_tty) char *count_string; int from_tty; { step_1 (1, 1, count_string); } static void step_1 (skip_subroutines, single_inst, count_string) int skip_subroutines; int single_inst; char *count_string; { register int count = 1; struct frame_info *frame; struct cleanup *cleanups = 0; ERROR_NO_INFERIOR; count = count_string ? parse_and_eval_address (count_string) : 1; if (!single_inst || skip_subroutines) /* leave si command alone */ { enable_longjmp_breakpoint(); cleanups = make_cleanup(disable_longjmp_breakpoint, 0); } 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 = 0; } if (skip_subroutines) step_over_calls = 1; 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); } /* Continue program at specified address. */ static void jump_command (arg, from_tty) 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; ERROR_NO_INFERIOR; 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]; free ((PTR)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 */ } } 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); } /* Continue program giving it specified signal. */ static void signal_command (signum_exp, from_tty) 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_address (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 *). */ #ifdef CALL_DUMMY_BREAKPOINT_OFFSET static void breakpoint_auto_delete_contents (arg) PTR arg; { breakpoint_auto_delete (*(bpstat *)arg); } #endif /* CALL_DUMMY_BREAKPOINT_OFFSET */ /* 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 1 (the frame will eventually be popped when we do hit that breakpoint). */ /* DEBUG HOOK: 4 => return instead of letting the stack dummy run. */ static int stack_dummy_testing = 0; int run_stack_dummy (addr, buffer) CORE_ADDR addr; char buffer[REGISTER_BYTES]; { struct cleanup *old_cleanups = make_cleanup (null_cleanup, 0); /* Now proceed, having reached the desired place. */ clear_proceed_status (); if (stack_dummy_testing & 4) { POP_FRAME; return(0); } #ifdef CALL_DUMMY_BREAKPOINT_OFFSET { struct breakpoint *bpt; struct symtab_and_line sal; #if CALL_DUMMY_LOCATION != AT_ENTRY_POINT sal.pc = addr - CALL_DUMMY_START_OFFSET + CALL_DUMMY_BREAKPOINT_OFFSET; #else sal.pc = CALL_DUMMY_ADDRESS (); #endif sal.symtab = NULL; sal.line = 0; /* 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 = 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); } #endif /* CALL_DUMMY_BREAKPOINT_OFFSET. */ proceed_to_finish = 1; /* We want stop_registers, please... */ proceed (addr, TARGET_SIGNAL_0, 0); discard_cleanups (old_cleanups); if (!stop_stack_dummy) return 1; /* On return, the stack dummy has been popped already. */ memcpy (buffer, stop_registers, sizeof stop_registers); 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 (from_tty) 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 = 1; 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 (arg, from_tty) char *arg; int from_tty; { if (!target_has_execution) error ("The program is not running."); if (arg) until_break_command (arg, from_tty); else until_next_command (from_tty); } /* "finish": Set a temporary breakpoint at the place the selected frame will return to, then continue. */ static void finish_command (arg, from_tty) 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; 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); old_chain = make_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); } proceed_to_finish = 1; /* We want stop_registers, please... */ proceed ((CORE_ADDR) -1, TARGET_SIGNAL_DEFAULT, 0); /* Did we stop at our breakpoint? */ if (bpstat_find_breakpoint(stop_bpstat, breakpoint) != NULL && function != 0) { struct type *value_type; register value_ptr val; CORE_ADDR funcaddr; value_type = TYPE_TARGET_TYPE (SYMBOL_TYPE (function)); if (!value_type) fatal ("internal: finish_command: function has no target type"); if (TYPE_CODE (value_type) == TYPE_CODE_VOID) return; funcaddr = BLOCK_START (SYMBOL_BLOCK_VALUE (function)); val = value_being_returned (value_type, stop_registers, using_struct_return (value_of_variable (function, NULL), funcaddr, check_typedef (value_type), BLOCK_GCC_COMPILED (SYMBOL_BLOCK_VALUE (function)))); printf_filtered ("Value returned is $%d = ", record_latest_value (val)); value_print (val, gdb_stdout, 0, Val_no_prettyprint); printf_filtered ("\n"); } do_cleanups(old_chain); } /* ARGSUSED */ static void program_info (args, from_tty) 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 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\" for more information.\n"); } static void environment_info (var, from_tty) 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 (arg, from_tty) 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 \"%s\" to null value.\n", var); set_in_environ (inferior_environ, var, ""); } else set_in_environ (inferior_environ, var, val); free (var); } static void unset_environment_command (var, from_tty) 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 (args, from_tty) 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 (dirname, from_tty) 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 = strsave (env); mod_path (dirname, &exec_path); set_in_environ (inferior_environ, path_var_name, exec_path); free (exec_path); if (from_tty) path_info ((char *)NULL, from_tty); } /* The array of register names. */ char *reg_names[] = REGISTER_NAMES; /* 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. */ #if !defined (DO_REGISTERS_INFO) #define DO_REGISTERS_INFO(regnum, fp) do_registers_info(regnum, fp) static void do_registers_info (regnum, fpregs) int regnum; int fpregs; { register int i; int numregs = ARCH_NUM_REGS; for (i = 0; i < numregs; i++) { char raw_buffer[MAX_REGISTER_RAW_SIZE]; char virtual_buffer[MAX_REGISTER_VIRTUAL_SIZE]; /* 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 (reg_names[i] == NULL || *(reg_names[i]) == '\0') continue; fputs_filtered (reg_names[i], gdb_stdout); print_spaces_filtered (15 - strlen (reg_names[i]), gdb_stdout); /* Get the data in raw format. */ if (read_relative_register_raw_bytes (i, raw_buffer)) { printf_filtered ("Invalid register contents\n"); continue; } /* Convert raw data to virtual format if necessary. */ #ifdef REGISTER_CONVERTIBLE if (REGISTER_CONVERTIBLE (i)) { REGISTER_CONVERT_TO_VIRTUAL (i, REGISTER_VIRTUAL_TYPE (i), raw_buffer, virtual_buffer); } else #endif 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; #ifdef INVALID_FLOAT if (INVALID_FLOAT (virtual_buffer, REGISTER_VIRTUAL_SIZE (i))) printf_filtered ("<invalid float>"); else #endif val_print (REGISTER_VIRTUAL_TYPE (i), virtual_buffer, 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 == BIG_ENDIAN ? j : REGISTER_RAW_SIZE (i) - 1 - j; printf_filtered ("%02x", (unsigned char)raw_buffer[idx]); } printf_filtered (")"); } /* FIXME! val_print probably can handle all of these cases now... */ /* Else if virtual format is too long for printf, print in hex a byte at a time. */ else if (REGISTER_VIRTUAL_SIZE (i) > (int) sizeof (long)) { register int j; printf_filtered ("0x"); for (j = 0; j < REGISTER_VIRTUAL_SIZE (i); j++) printf_filtered ("%02x", (unsigned char)virtual_buffer[j]); } /* Else print as integer in hex and in decimal. */ else { val_print (REGISTER_VIRTUAL_TYPE (i), raw_buffer, 0, gdb_stdout, 'x', 1, 0, Val_pretty_default); printf_filtered ("\t"); val_print (REGISTER_VIRTUAL_TYPE (i), raw_buffer, 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"); } } #endif /* no DO_REGISTERS_INFO. */ static void registers_info (addr_exp, fpregs) 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 = ARCH_NUM_REGS; for (regnum = 0; regnum < numregs; regnum++) if (!strncmp (addr_exp, reg_names[regnum], end - addr_exp) && strlen (reg_names[regnum]) == end - addr_exp) goto found; 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'); } static void all_registers_info (addr_exp, from_tty) char *addr_exp; int from_tty; { registers_info (addr_exp, 1); } static void nofp_registers_info (addr_exp, from_tty) 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 (args, from_tty) char *args; int from_tty; { #ifdef SOLIB_ADD extern int auto_solib_add; #endif 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 (); stop_soon_quietly = 1; /* No traps are generated when attaching to inferior under Mach 3 or GNU hurd. */ #ifndef ATTACH_NO_WAIT wait_for_inferior (); #endif #ifdef SOLIB_ADD if (auto_solib_add) { /* Add shared library symbols from the newly attached process, if any. */ SOLIB_ADD ((char *)0, from_tty, (struct target_ops *)0); re_enable_breakpoints_in_shlibs (); } #endif normal_stop (); } /* * 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 (args, from_tty) char *args; int from_tty; { dont_repeat (); /* Not for the faint of heart */ target_detach (args, from_tty); } /* ARGSUSED */ static void float_info (addr_exp, from_tty) char *addr_exp; int from_tty; { #ifdef FLOAT_INFO FLOAT_INFO; #else printf_filtered ("No floating point info available for this processor.\n"); #endif } /* ARGSUSED */ static void unset_command (args, from_tty) char *args; int from_tty; { printf_filtered ("\"unset\" must be followed by the name of an unset subcommand.\n"); help_list (unsetlist, "unset ", -1, gdb_stdout); } void _initialize_infcmd () { struct cmd_list_element *c; add_com ("tty", class_run, tty_command, "Set terminal for future runs of program being debugged."); add_show_from_set (add_set_cmd ("args", class_run, var_string_noescape, (char *)&inferior_args, "Set arguments 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), &showlist); 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; 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 = 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\", you should use the \"file\" command to specify\n\ the program running in the process, 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 you\n\ 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); 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); 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."); add_com_alias ("u", "until", class_run, 1); 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."); 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); 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."); add_com_alias ("r", "run", class_run, 1); 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 ("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_args = savestring ("", 1); /* Initially no args */ inferior_environ = make_environ (); init_environ (inferior_environ); }