diff options
Diffstat (limited to 'gdb/procfs.c')
| -rw-r--r-- | gdb/procfs.c | 112 |
1 files changed, 65 insertions, 47 deletions
diff --git a/gdb/procfs.c b/gdb/procfs.c index 67d1c3c..d176386 100644 --- a/gdb/procfs.c +++ b/gdb/procfs.c @@ -170,11 +170,7 @@ init_procfs_ops () #ifdef NEW_PROC_API extern int write_with_trace PARAMS ((int, void *, size_t, char *, int)); extern off_t lseek_with_trace PARAMS ((int, off_t, int, char *, int)); - -#if 0 #define write(X,Y,Z) write_with_trace (X, Y, Z, __FILE__, __LINE__) -#endif - #define lseek(X,Y,Z) lseek_with_trace (X, Y, Z, __FILE__, __LINE__) #else extern int ioctl_with_trace PARAMS ((int, long, void *, char *, int)); @@ -183,26 +179,14 @@ extern int ioctl_with_trace PARAMS ((int, long, void *, char *, int)); #define open(X,Y) open_with_trace (X, Y, __FILE__, __LINE__) #define close(X) close_with_trace (X, __FILE__, __LINE__) #define wait(X) wait_with_trace (X, __FILE__, __LINE__) - -#if 0 #define PROCFS_NOTE(X) procfs_note (X, __FILE__, __LINE__) #define PROC_PRETTYFPRINT_STATUS(X,Y,Z,T) \ proc_prettyfprint_status (X, Y, Z, T) -#else -#define PROCFS_NOTE(X) -#define PROC_PRETTYFPRINT_STATUS(X,Y,Z,T) -#endif - #else #define PROCFS_NOTE(X) #define PROC_PRETTYFPRINT_STATUS(X,Y,Z,T) #endif - /* temp: */ -#undef PROCFS_NOTE -#define PROCFS_NOTE(X) - /* suppress */ - /* * World Unification: @@ -297,20 +281,13 @@ typedef prstatus_t gdb_lwpstatus_t; typedef fpregset_t gdb_fpregset_t; #endif -/* The PIDs that we pass to and from GDB will be composed from - the actual PID plus the LWPID. These macros will be used to - compose and decompose them. */ +/* Provide default composite pid manipulation macros for systems that + don't have threads. */ #ifndef PIDGET -#define PIDGET(PID) (((PID) & 0xffff)) -#endif - -#ifndef TIDGET -#define TIDGET(PID) (((PID) & 0x7fffffff) >> 16) -#endif - -#ifndef MERGEPID -#define MERGEPID(PID, TID) (((PID) & 0xffff) | ((TID) << 16)) +#define PIDGET(PID) (PID) +#define TIDGET(PID) (PID) +#define MERGEPID(PID, TID) (PID) #endif typedef struct procinfo { @@ -611,7 +588,7 @@ create_procinfo (pid, tid) { procinfo *pi, *parent; - if (pi = find_procinfo (pid, tid)) + if ((pi = find_procinfo (pid, tid))) return pi; /* Already exists, nothing to do. */ /* find parent before doing malloc, to save having to cleanup */ @@ -959,7 +936,14 @@ proc_flags (pi) return 0; /* FIXME: not a good failure value (but what is?) */ #ifdef NEW_PROC_API +# ifdef UNIXWARE + /* UnixWare 7.1 puts process status flags, e.g. PR_ASYNC, in + pstatus_t and LWP status flags, e.g. PR_STOPPED, in lwpstatus_t. + The two sets of flags don't overlap. */ + return pi->prstatus.pr_flags | pi->prstatus.pr_lwp.pr_flags; +# else return pi->prstatus.pr_lwp.pr_flags; +# endif #else return pi->prstatus.pr_flags; #endif @@ -1093,7 +1077,7 @@ proc_cursig (struct procinfo *pi) } /* - * Function: proc_modify_flags + * Function: proc_modify_flag * * === I appologize for the messiness of this function. * === This is an area where the different versions of @@ -1102,6 +1086,7 @@ proc_cursig (struct procinfo *pi) * Set or reset any of the following process flags: * PR_FORK -- forked child will inherit trace flags * PR_RLC -- traced process runs when last /proc file closed. + * PR_KLC -- traced process is killed when last /proc file closed. * PR_ASYNC -- LWP's get to run/stop independently. * * There are three methods for doing this function: @@ -1113,7 +1098,8 @@ proc_cursig (struct procinfo *pi) * [OSF, Sol5] * * Note: Irix does not define PR_ASYNC. - * Note: OSF is the only one that can ONLY use the oldest method. + * Note: OSF does not define PR_KLC. + * Note: OSF is the only one that can ONLY use the oldest method. * * Arguments: * pi -- the procinfo @@ -1218,6 +1204,9 @@ proc_modify_flag (pi, flag, mode) #ifdef PR_ASYNC flag == PR_ASYNC ? "PR_ASYNC" : #endif +#ifdef PR_KLC + flag == PR_KLC ? "PR_KLC" : +#endif "<unknown flag>", mode == FLAG_RESET ? "off" : "on"); @@ -1258,6 +1247,42 @@ proc_unset_run_on_last_close (pi) return proc_modify_flag (pi, PR_RLC, FLAG_RESET); } +#ifdef PR_KLC +/* + * Function: proc_set_kill_on_last_close + * + * Set the kill_on_last_close flag. + * Process with all threads will be killed when debugger + * closes all /proc fds (or debugger exits or dies). + * + * Returns non-zero for success, zero for failure. + */ + +int +proc_set_kill_on_last_close (pi) + procinfo *pi; +{ + return proc_modify_flag (pi, PR_KLC, FLAG_SET); +} + +/* + * Function: proc_unset_kill_on_last_close + * + * Reset the kill_on_last_close flag. + * Process will NOT be killed when debugger + * closes its file handles (or exits or dies). + * + * Returns non-zero for success, zero for failure. + */ + +int +proc_unset_kill_on_last_close (pi) + procinfo *pi; +{ + return proc_modify_flag (pi, PR_KLC, FLAG_RESET); +} +#endif /* PR_KLC */ + /* * Function: proc_set_inherit_on_fork * @@ -2601,7 +2626,9 @@ proc_iterate_over_mappings (func) { struct prmap *map; procinfo *pi; +#ifndef NEW_PROC_API /* avoid compiler warning */ int nmaps = 0, i; +#endif int funcstat = 0; int fd, map_fd; char pathname[MAX_PROC_NAME_SIZE]; @@ -3390,7 +3417,6 @@ do_detach (signo) int signo; { procinfo *pi; - long pflags; /* Find procinfo for the main process */ pi = find_procinfo_or_die (PIDGET (inferior_pid), 0); /* FIXME: threads */ @@ -3650,18 +3676,6 @@ wait_again: why = proc_why (pi); what = proc_what (pi); -#if 0 - { - int stopped_pc = read_pc (); - if (stopped_pc != 0x10c68 && - stopped_pc != 0x10c6c && - stopped_pc != 0x10c70 && - stopped_pc != 0x22768 && - stopped_pc != 0x10c74) - printf ("%x,%d,%d\n", stopped_pc, why, what); - } -#endif - if (flags & (PR_STOPPED | PR_ISTOP)) { #ifdef PR_ASYNC @@ -3895,7 +3909,7 @@ wait_again: temp = MERGEPID (pi->pid, temp); if (!in_thread_list (temp)) { - printf_filtered ("[*New %s]\n", + printf_filtered ("[New %s]\n", target_pid_to_str (temp)); add_thread (temp); } @@ -4427,9 +4441,9 @@ unconditionally_kill_inferior (pi) /* FIXME: should we use waitpid to make sure we get the right event? Should we check the returned event? */ { +#if 0 int status, ret; -#if 0 ret = waitpid (pi->pid, &status, 0); #else wait (NULL); @@ -4547,6 +4561,10 @@ procfs_init_inferior (pid) if ((fail = procfs_debug_inferior (pi)) != 0) proc_error (pi, "init_inferior (procfs_debug_inferior)", fail); + /* FIXME: logically, we should really be turning OFF run-on-last-close, + and possibly even turning ON kill-on-last-close at this point. But + I can't make that change without careful testing which I don't have + time to do right now... */ /* Turn on run-on-last-close flag so that the child will die if GDB goes away for some reason. */ if (!proc_set_run_on_last_close (pi)) @@ -4561,7 +4579,7 @@ procfs_init_inferior (pid) #else /* One trap to exec the shell, one to exec the program being debugged. */ startup_inferior (2); -#endif +#endif /* START_INFERIOR_TRAPS_EXPECTED */ } /* |