diff options
Diffstat (limited to 'gdb/inftarg.c')
| -rw-r--r-- | gdb/inftarg.c | 361 |
1 files changed, 182 insertions, 179 deletions
diff --git a/gdb/inftarg.c b/gdb/inftarg.c index d615ff9cffa..96fb3d92da1 100644 --- a/gdb/inftarg.c +++ b/gdb/inftarg.c @@ -2,26 +2,27 @@ Copyright 1990-1996, 1998, 1999 Free Software Foundation, Inc. Contributed by Cygnus Support. -## Contains temporary hacks.. + ## Contains temporary hacks.. -This file is part of GDB. + 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 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. + 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. */ + 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 "frame.h" /* required by inferior.h */ +#include "frame.h" /* required by inferior.h */ #include "inferior.h" #include "target.h" #include "gdbcore.h" @@ -32,11 +33,11 @@ Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ #include <fcntl.h> #ifdef HAVE_WAIT_H -# include <wait.h> +#include <wait.h> #else -# ifdef HAVE_SYS_WAIT_H -# include <sys/wait.h> -# endif +#ifdef HAVE_SYS_WAIT_H +#include <sys/wait.h> +#endif #endif /* "wait.h" fills in the gaps left by <wait.h> */ @@ -46,10 +47,10 @@ Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ #endif extern struct symtab_and_line * -child_enable_exception_callback PARAMS ((enum exception_event_kind, int)); + child_enable_exception_callback PARAMS ((enum exception_event_kind, int)); extern struct exception_event_record * -child_get_current_exception_event PARAMS ((void)); + child_get_current_exception_event PARAMS ((void)); extern void _initialize_inftarg PARAMS ((void)); @@ -95,10 +96,10 @@ child_require_detach PARAMS ((int, char *, int)); static void ptrace_me PARAMS ((void)); -static void +static void ptrace_him PARAMS ((int)); -static void +static void child_create_inferior PARAMS ((char *, char *, char **)); static void @@ -127,14 +128,14 @@ int child_suppress_run = 0; /* Non-zero if inftarg should pretend not to #ifndef CHILD_WAIT -/*##*/ +/*## */ /* Enable HACK for ttrace work. In * infttrace.c/require_notification_of_events, * this is set to 0 so that the loop in child_wait * won't loop. */ int not_same_real_pid = 1; -/*##*/ +/*## */ /* Wait for child to do something. Return pid of child, or -1 in case @@ -148,101 +149,103 @@ child_wait (pid, ourstatus) int save_errno; int status; char *execd_pathname = NULL; - int exit_status; - int related_pid; - int syscall_id; - enum target_waitkind kind; + int exit_status; + int related_pid; + int syscall_id; + enum target_waitkind kind; - do { - set_sigint_trap(); /* Causes SIGINT to be passed on to the - attached process. */ - set_sigio_trap (); + do + { + set_sigint_trap (); /* Causes SIGINT to be passed on to the + attached process. */ + set_sigio_trap (); - pid = ptrace_wait (inferior_pid, &status); + pid = ptrace_wait (inferior_pid, &status); - save_errno = errno; + save_errno = errno; - clear_sigio_trap (); + clear_sigio_trap (); - clear_sigint_trap(); + clear_sigint_trap (); - if (pid == -1) - { - if (save_errno == EINTR) - continue; + if (pid == -1) + { + if (save_errno == EINTR) + continue; - fprintf_unfiltered (gdb_stderr, "Child process unexpectedly missing: %s.\n", - safe_strerror (save_errno)); + fprintf_unfiltered (gdb_stderr, "Child process unexpectedly missing: %s.\n", + safe_strerror (save_errno)); - /* Claim it exited with unknown signal. */ - ourstatus->kind = TARGET_WAITKIND_SIGNALLED; - ourstatus->value.sig = TARGET_SIGNAL_UNKNOWN; - return -1; - } + /* Claim it exited with unknown signal. */ + ourstatus->kind = TARGET_WAITKIND_SIGNALLED; + ourstatus->value.sig = TARGET_SIGNAL_UNKNOWN; + return -1; + } - /* Did it exit? - */ - if (target_has_exited (pid, status, &exit_status)) - { - /* ??rehrauer: For now, ignore this. */ - continue; - } - - if (!target_thread_alive (pid)) - { - ourstatus->kind = TARGET_WAITKIND_SPURIOUS; - return pid; - } - - if (target_has_forked (pid, &related_pid) - && ((pid == inferior_pid) || (related_pid == inferior_pid))) - { - ourstatus->kind = TARGET_WAITKIND_FORKED; - ourstatus->value.related_pid = related_pid; - return pid; - } - - if (target_has_vforked (pid, &related_pid) - && ((pid == inferior_pid) || (related_pid == inferior_pid))) - { - ourstatus->kind = TARGET_WAITKIND_VFORKED; - ourstatus->value.related_pid = related_pid; - return pid; - } - - if (target_has_execd (pid, &execd_pathname)) - { - /* Are we ignoring initial exec events? (This is likely because - we're in the process of starting up the inferior, and another - (older) mechanism handles those.) If so, we'll report this - as a regular stop, not an exec. - */ - if (inferior_ignoring_startup_exec_events) - { - inferior_ignoring_startup_exec_events--; - } - else - { - ourstatus->kind = TARGET_WAITKIND_EXECD; - ourstatus->value.execd_pathname = execd_pathname; - return pid; - } - } - - /* All we must do with these is communicate their occurrence - to wait_for_inferior... + /* Did it exit? */ - if (target_has_syscall_event (pid, &kind, &syscall_id)) - { - ourstatus->kind = kind; - ourstatus->value.syscall_id = syscall_id; - return pid; - } - -/*## } while (pid != inferior_pid); ##*/ /* Some other child died or stopped */ + if (target_has_exited (pid, status, &exit_status)) + { + /* ??rehrauer: For now, ignore this. */ + continue; + } + + if (!target_thread_alive (pid)) + { + ourstatus->kind = TARGET_WAITKIND_SPURIOUS; + return pid; + } + + if (target_has_forked (pid, &related_pid) + && ((pid == inferior_pid) || (related_pid == inferior_pid))) + { + ourstatus->kind = TARGET_WAITKIND_FORKED; + ourstatus->value.related_pid = related_pid; + return pid; + } + + if (target_has_vforked (pid, &related_pid) + && ((pid == inferior_pid) || (related_pid == inferior_pid))) + { + ourstatus->kind = TARGET_WAITKIND_VFORKED; + ourstatus->value.related_pid = related_pid; + return pid; + } + + if (target_has_execd (pid, &execd_pathname)) + { + /* Are we ignoring initial exec events? (This is likely because + we're in the process of starting up the inferior, and another + (older) mechanism handles those.) If so, we'll report this + as a regular stop, not an exec. + */ + if (inferior_ignoring_startup_exec_events) + { + inferior_ignoring_startup_exec_events--; + } + else + { + ourstatus->kind = TARGET_WAITKIND_EXECD; + ourstatus->value.execd_pathname = execd_pathname; + return pid; + } + } + + /* All we must do with these is communicate their occurrence + to wait_for_inferior... + */ + if (target_has_syscall_event (pid, &kind, &syscall_id)) + { + ourstatus->kind = kind; + ourstatus->value.syscall_id = syscall_id; + return pid; + } + + /*## } while (pid != inferior_pid); ## *//* Some other child died or stopped */ /* hack for thread testing */ - } while( (pid != inferior_pid) && not_same_real_pid ); -/*##*/ + } + while ((pid != inferior_pid) && not_same_real_pid); +/*## */ store_waitstatus (ourstatus, status); return pid; @@ -252,15 +255,15 @@ child_wait (pid, ourstatus) #if !defined(CHILD_POST_WAIT) void child_post_wait (pid, wait_status) - int pid; - int wait_status; + int pid; + int wait_status; { /* This version of Unix doesn't require a meaningful "post wait" operation. - */ + */ } #endif - + #ifndef CHILD_THREAD_ALIVE @@ -280,9 +283,9 @@ child_thread_alive (pid) static void child_attach_to_process (args, from_tty, after_fork) - char * args; - int from_tty; - int after_fork; + char *args; + int from_tty; + int after_fork; { if (!args) error_no_arg ("process-id to attach"); @@ -301,7 +304,7 @@ child_attach_to_process (args, from_tty, after_fork) if ((pid == 0) && (args == dummy)) error ("Illegal process-id: %s\n", args); - if (pid == getpid()) /* Trying to masturbate? */ + if (pid == getpid ()) /* Trying to masturbate? */ error ("I refuse to debug myself!"); if (from_tty) @@ -309,13 +312,13 @@ child_attach_to_process (args, from_tty, after_fork) exec_file = (char *) get_exec_file (0); if (after_fork) - printf_unfiltered ("Attaching after fork to %s\n", - target_pid_to_str (pid)); + printf_unfiltered ("Attaching after fork to %s\n", + target_pid_to_str (pid)); else if (exec_file) printf_unfiltered ("Attaching to program: %s, %s\n", exec_file, - target_pid_to_str (pid)); - else - printf_unfiltered ("Attaching to %s\n", target_pid_to_str (pid)); + target_pid_to_str (pid)); + else + printf_unfiltered ("Attaching to %s\n", target_pid_to_str (pid)); gdb_flush (gdb_stdout); } @@ -328,7 +331,7 @@ child_attach_to_process (args, from_tty, after_fork) inferior_pid = pid; push_target (&child_ops); } -#endif /* ATTACH_DETACH */ +#endif /* ATTACH_DETACH */ } @@ -345,7 +348,7 @@ child_attach (args, from_tty) #if !defined(CHILD_POST_ATTACH) void child_post_attach (pid) - int pid; + int pid; { /* This version of Unix doesn't require a meaningful "post attach" operation by a debugger. */ @@ -358,14 +361,14 @@ child_require_attach (args, from_tty) int from_tty; { child_attach_to_process (args, from_tty, 1); -} +} static void child_detach_from_process (pid, args, from_tty, after_fork) - int pid; - char * args; - int from_tty; - int after_fork; + int pid; + char *args; + int from_tty; + int after_fork; { #ifdef ATTACH_DETACH { @@ -376,12 +379,12 @@ child_detach_from_process (pid, args, from_tty, after_fork) char *exec_file = get_exec_file (0); if (exec_file == 0) exec_file = ""; - if (after_fork) - printf_unfiltered ("Detaching after fork from %s\n", - target_pid_to_str (pid)); - else + if (after_fork) + printf_unfiltered ("Detaching after fork from %s\n", + target_pid_to_str (pid)); + else printf_unfiltered ("Detaching from program: %s, %s\n", exec_file, - target_pid_to_str (pid)); + target_pid_to_str (pid)); gdb_flush (gdb_stdout); } if (args) @@ -417,9 +420,9 @@ child_detach (args, from_tty) static void child_require_detach (pid, args, from_tty) - int pid; - char * args; - int from_tty; + int pid; + char *args; + int from_tty; { child_detach_from_process (pid, args, from_tty, 1); } @@ -446,7 +449,7 @@ child_files_info (ignore) struct target_ops *ignore; { printf_unfiltered ("\tUsing the running image of %s %s.\n", - attach_flag? "attached": "child", target_pid_to_str (inferior_pid)); + attach_flag ? "attached" : "child", target_pid_to_str (inferior_pid)); } /* ARGSUSED */ @@ -471,7 +474,7 @@ ptrace_me () /* Stub function which causes the GDB that runs it, to start ptrace-ing the child process. */ -static void +static void ptrace_him (pid) int pid; { @@ -481,7 +484,7 @@ ptrace_him (pid) between the parent and child processes after the debugger forks, and before the child execs the debuggee program. This call basically gives permission for the child to exec. - */ + */ target_acknowledge_created_inferior (pid); @@ -493,7 +496,7 @@ ptrace_him (pid) /* On some targets, there must be some explicit actions taken after the inferior has been started up. - */ + */ target_post_startup_inferior (pid); } @@ -511,46 +514,46 @@ child_create_inferior (exec_file, allargs, env) #ifdef HPUXHPPA fork_inferior (exec_file, allargs, env, ptrace_me, ptrace_him, pre_fork_inferior, NULL); #else - fork_inferior (exec_file, allargs, env, ptrace_me, ptrace_him, NULL, NULL); + fork_inferior (exec_file, allargs, env, ptrace_me, ptrace_him, NULL, NULL); #endif /* We are at the first instruction we care about. */ /* Pedal to the metal... */ - proceed ((CORE_ADDR) -1, TARGET_SIGNAL_0, 0); + proceed ((CORE_ADDR) - 1, TARGET_SIGNAL_0, 0); } #if !defined(CHILD_POST_STARTUP_INFERIOR) void child_post_startup_inferior (pid) - int pid; + int pid; { /* This version of Unix doesn't require a meaningful "post startup inferior" operation by a debugger. - */ + */ } #endif #if !defined(CHILD_ACKNOWLEDGE_CREATED_INFERIOR) void child_acknowledge_created_inferior (pid) - int pid; + int pid; { /* This version of Unix doesn't require a meaningful "acknowledge created inferior" operation by a debugger. - */ + */ } #endif void child_clone_and_follow_inferior (child_pid, followed_child) - int child_pid; - int *followed_child; + int child_pid; + int *followed_child; { clone_and_follow_inferior (child_pid, followed_child); /* Don't resume CHILD_PID; it's stopped where it ought to be, until the decision gets made elsewhere how to continue it. - */ + */ } @@ -560,7 +563,7 @@ child_post_follow_inferior_by_clone () { /* This version of Unix doesn't require a meaningful "post follow inferior" operation by a clone debugger. - */ + */ } #endif @@ -619,11 +622,11 @@ child_has_forked (pid, child_pid) #if !defined(CHILD_HAS_VFORKED) int child_has_vforked (pid, child_pid) - int pid; - int * child_pid; + int pid; + int *child_pid; { /* This version of Unix doesn't support notification of vfork events. - */ + */ return 0; } #endif @@ -636,7 +639,7 @@ child_can_follow_vfork_prior_to_exec () /* This version of Unix doesn't support notification of vfork events. However, if it did, it probably wouldn't allow vforks to be followed before the following exec. - */ + */ return 0; } #endif @@ -645,14 +648,14 @@ child_can_follow_vfork_prior_to_exec () #if !defined(CHILD_POST_FOLLOW_VFORK) void child_post_follow_vfork (parent_pid, followed_parent, child_pid, followed_child) - int parent_pid; - int followed_parent; - int child_pid; - int followed_child; + int parent_pid; + int followed_parent; + int child_pid; + int followed_child; { /* This version of Unix doesn't require a meaningful "post follow vfork" operation by a clone debugger. - */ + */ } #endif @@ -679,11 +682,11 @@ child_remove_exec_catchpoint (pid) #if !defined(CHILD_HAS_EXECD) int child_has_execd (pid, execd_pathname) - int pid; - char ** execd_pathname; + int pid; + char **execd_pathname; { /* This version of Unix doesn't support notification of exec events. - */ + */ return 0; } #endif @@ -694,7 +697,7 @@ int child_reported_exec_events_per_exec_call () { /* This version of Unix doesn't support notification of exec events. - */ + */ return 1; } #endif @@ -703,12 +706,12 @@ child_reported_exec_events_per_exec_call () #if !defined(CHILD_HAS_SYSCALL_EVENT) int child_has_syscall_event (pid, kind, syscall_id) - int pid; - enum target_waitkind * kind; - int * syscall_id; + int pid; + enum target_waitkind *kind; + int *syscall_id; { /* This version of Unix doesn't support notification of syscall events. - */ + */ return 0; } #endif @@ -717,9 +720,9 @@ child_has_syscall_event (pid, kind, syscall_id) #if !defined(CHILD_HAS_EXITED) int child_has_exited (pid, wait_status, exit_status) - int pid; - int wait_status; - int * exit_status; + int pid; + int wait_status; + int *exit_status; { if (WIFEXITED (wait_status)) { @@ -729,12 +732,12 @@ child_has_exited (pid, wait_status, exit_status) if (WIFSIGNALED (wait_status)) { - *exit_status = 0; /* ?? Don't know what else to say here. */ + *exit_status = 0; /* ?? Don't know what else to say here. */ return 1; } /* ?? Do we really need to consult the event state, too? Assume the - wait_state alone suffices. + wait_state alone suffices. */ return 0; } @@ -775,8 +778,8 @@ child_stop () #if !defined(CHILD_ENABLE_EXCEPTION_CALLBACK) struct symtab_and_line * child_enable_exception_callback (kind, enable) - enum exception_event_kind kind; - int enable; + enum exception_event_kind kind; + int enable; { return (struct symtab_and_line *) NULL; } @@ -794,27 +797,27 @@ child_get_current_exception_event () #if !defined(CHILD_PID_TO_EXEC_FILE) char * child_pid_to_exec_file (pid) - int pid; + int pid; { /* This version of Unix doesn't support translation of a process ID to the filename of the executable file. - */ + */ return NULL; } #endif char * child_core_file_to_sym_file (core) - char * core; + char *core; { /* The target stratum for a running executable need not support this operation. - */ + */ return NULL; } + - static void init_child_ops () { |