| /* Machine independent support for SVR4 /proc (process file system) for GDB. |
| Copyright 1991, 1992-98, 1999 Free Software Foundation, Inc. |
| Written by Fred Fish at Cygnus Support. Changes for sysv4.2mp procfs |
| compatibility by Geoffrey Noer at Cygnus Solutions. |
| |
| 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. */ |
| |
| |
| /* N O T E S |
| |
| For information on the details of using /proc consult section proc(4) |
| in the UNIX System V Release 4 System Administrator's Reference Manual. |
| |
| The general register and floating point register sets are manipulated |
| separately. This file makes the assumption that if FP0_REGNUM is |
| defined, then support for the floating point register set is desired, |
| regardless of whether or not the actual target has floating point hardware. |
| |
| */ |
| |
| |
| #include "defs.h" |
| |
| #include <sys/types.h> |
| #include <time.h> |
| #include <sys/fault.h> |
| #include <sys/syscall.h> |
| #include <sys/procfs.h> |
| #include <fcntl.h> |
| #include <errno.h> |
| #include "gdb_string.h" |
| #include <stropts.h> |
| #include <poll.h> |
| #include "gdb_stat.h" |
| |
| #include "inferior.h" |
| #include "target.h" |
| #include "command.h" |
| #include "gdbcore.h" |
| #include "gdbthread.h" |
| |
| #if !defined(SYS_lwp_create) && defined(SYS_lwpcreate) |
| #define SYS_lwp_create SYS_lwpcreate |
| #endif |
| |
| #if !defined(SYS_lwp_exit) && defined(SYS_lwpexit) |
| #define SYS_lwp_exit SYS_lwpexit |
| #endif |
| |
| #if !defined(SYS_lwp_wait) && defined(SYS_lwpwait) |
| #define SYS_lwp_wait SYS_lwpwait |
| #endif |
| |
| #if !defined(SYS_lwp_self) && defined(SYS_lwpself) |
| #define SYS_lwp_self SYS_lwpself |
| #endif |
| |
| #if !defined(SYS_lwp_info) && defined(SYS_lwpinfo) |
| #define SYS_lwp_info SYS_lwpinfo |
| #endif |
| |
| #if !defined(SYS_lwp_private) && defined(SYS_lwpprivate) |
| #define SYS_lwp_private SYS_lwpprivate |
| #endif |
| |
| #if !defined(SYS_lwp_kill) && defined(SYS_lwpkill) |
| #define SYS_lwp_kill SYS_lwpkill |
| #endif |
| |
| #if !defined(SYS_lwp_suspend) && defined(SYS_lwpsuspend) |
| #define SYS_lwp_suspend SYS_lwpsuspend |
| #endif |
| |
| #if !defined(SYS_lwp_continue) && defined(SYS_lwpcontinue) |
| #define SYS_lwp_continue SYS_lwpcontinue |
| #endif |
| |
| /* the name of the proc status struct depends on the implementation */ |
| /* Wrap Light Weight Process member in THE_PR_LWP macro for clearer code */ |
| #ifndef HAVE_PSTATUS_T |
| typedef prstatus_t gdb_prstatus_t; |
| #define THE_PR_LWP(a) a |
| #else /* HAVE_PSTATUS_T */ |
| typedef pstatus_t gdb_prstatus_t; |
| #define THE_PR_LWP(a) a.pr_lwp |
| #if !defined(HAVE_PRRUN_T) && defined(HAVE_MULTIPLE_PROC_FDS) |
| /* Fallback definitions - for using configure information directly */ |
| #ifndef UNIXWARE |
| #define UNIXWARE 1 |
| #endif |
| #if !defined(PROCFS_USE_READ_WRITE) && !defined(HAVE_PROCFS_PIOCSET) |
| #define PROCFS_USE_READ_WRITE 1 |
| #endif |
| #endif /* !HAVE_PRRUN_T && HAVE_MULTIPLE_PROC_FDS */ |
| #endif /* HAVE_PSTATUS_T */ |
| |
| #define MAX_SYSCALLS 256 /* Maximum number of syscalls for table */ |
| |
| /* proc name formats may vary depending on the proc implementation */ |
| #ifdef HAVE_MULTIPLE_PROC_FDS |
| #ifndef CTL_PROC_NAME_FMT |
| #define CTL_PROC_NAME_FMT "/proc/%d/ctl" |
| #define AS_PROC_NAME_FMT "/proc/%d/as" |
| #define MAP_PROC_NAME_FMT "/proc/%d/map" |
| #define STATUS_PROC_NAME_FMT "/proc/%d/status" |
| #endif |
| #else /* HAVE_MULTIPLE_PROC_FDS */ |
| #ifndef CTL_PROC_NAME_FMT |
| #define CTL_PROC_NAME_FMT "/proc/%05d" |
| #define AS_PROC_NAME_FMT "/proc/%05d" |
| #define MAP_PROC_NAME_FMT "/proc/%05d" |
| #define STATUS_PROC_NAME_FMT "/proc/%05d" |
| #endif |
| #endif /* HAVE_MULTIPLE_PROC_FDS */ |
| |
| |
| /* These #ifdefs are for sol2.x in particular. sol2.x has |
| both a "gregset_t" and a "prgregset_t", which have |
| similar uses but different layouts. sol2.x gdb tries to |
| use prgregset_t (and prfpregset_t) everywhere. */ |
| |
| #ifdef GDB_GREGSET_TYPE |
| typedef GDB_GREGSET_TYPE gdb_gregset_t; |
| #else |
| typedef gregset_t gdb_gregset_t; |
| #endif |
| |
| #ifdef GDB_FPREGSET_TYPE |
| typedef GDB_FPREGSET_TYPE gdb_fpregset_t; |
| #else |
| typedef fpregset_t gdb_fpregset_t; |
| #endif |
| |
| |
| #define MAX_PROC_NAME_SIZE sizeof("/proc/1234567890/status") |
| |
| struct target_ops procfs_ops; |
| |
| int procfs_suppress_run = 0; /* Non-zero if procfs should pretend not to |
| be a runnable target. Used by targets |
| that can sit atop procfs, such as solaris |
| thread support. */ |
| |
| #if 1 /* FIXME: Gross and ugly hack to resolve coredep.c global */ |
| CORE_ADDR kernel_u_addr; |
| #endif |
| |
| #ifdef BROKEN_SIGINFO_H /* Workaround broken SGS <sys/siginfo.h> */ |
| #undef si_pid |
| #define si_pid _data._proc.pid |
| #undef si_uid |
| #define si_uid _data._proc._pdata._kill.uid |
| #endif /* BROKEN_SIGINFO_H */ |
| |
| /* Define structures for passing commands to /proc/pid/ctl file. Note that |
| while we create these for the PROCFS_USE_READ_WRITE world, we use them |
| and ignore the extra cmd int in other proc schemes. |
| */ |
| /* generic ctl msg */ |
| struct proc_ctl |
| { |
| int cmd; |
| long data; |
| }; |
| |
| /* set general registers */ |
| struct greg_ctl |
| { |
| int cmd; |
| gdb_gregset_t gregset; |
| }; |
| |
| /* set fp registers */ |
| struct fpreg_ctl |
| { |
| int cmd; |
| gdb_fpregset_t fpregset; |
| }; |
| |
| /* set signals to be traced */ |
| struct sig_ctl |
| { |
| int cmd; |
| sigset_t sigset; |
| }; |
| |
| /* set faults to be traced */ |
| struct flt_ctl |
| { |
| int cmd; |
| fltset_t fltset; |
| }; |
| |
| /* set system calls to be traced */ |
| struct sys_ctl |
| { |
| int cmd; |
| sysset_t sysset; |
| }; |
| |
| /* set current signal to be traced */ |
| struct sigi_ctl |
| { |
| int cmd; |
| siginfo_t siginfo; |
| }; |
| |
| /* All access to the inferior, either one started by gdb or one that has |
| been attached to, is controlled by an instance of a procinfo structure, |
| defined below. Since gdb currently only handles one inferior at a time, |
| the procinfo structure for the inferior is statically allocated and |
| only one exists at any given time. There is a separate procinfo |
| structure for use by the "info proc" command, so that we can print |
| useful information about any random process without interfering with |
| the inferior's procinfo information. */ |
| |
| struct procinfo |
| { |
| struct procinfo *next; |
| int pid; /* Process ID of inferior */ |
| int ctl_fd; /* File descriptor for /proc ctl file */ |
| int status_fd; /* File descriptor for /proc status file */ |
| int as_fd; /* File descriptor for /proc as file */ |
| int map_fd; /* File descriptor for /proc map file */ |
| char *pathname; /* Pathname to /proc entry */ |
| int had_event; /* poll/select says something happened */ |
| int was_stopped; /* Nonzero if was stopped prior to attach */ |
| int nopass_next_sigstop; /* Don't pass a sigstop on next resume */ |
| #ifdef HAVE_PRRUN_T |
| prrun_t prrun; /* Control state when it is run */ |
| #endif |
| gdb_prstatus_t prstatus; /* Current process status info */ |
| struct greg_ctl gregset; /* General register set */ |
| struct fpreg_ctl fpregset; /* Floating point register set */ |
| struct flt_ctl fltset; /* Current traced hardware fault set */ |
| struct sig_ctl trace; /* Current traced signal set */ |
| struct sys_ctl exitset; /* Current traced system call exit set */ |
| struct sys_ctl entryset; /* Current traced system call entry set */ |
| struct sig_ctl saved_sighold; /* Saved held signal set */ |
| struct flt_ctl saved_fltset; /* Saved traced hardware fault set */ |
| struct sig_ctl saved_trace; /* Saved traced signal set */ |
| struct sys_ctl saved_exitset; /* Saved traced system call exit set */ |
| struct sys_ctl saved_entryset; /* Saved traced system call entry set */ |
| int num_syscall_handlers; /* Number of syscall trap handlers |
| currently installed */ |
| /* Pointer to list of syscall trap handlers */ |
| struct procfs_syscall_handler *syscall_handlers; |
| int saved_rtnval; /* return value and status for wait(), */ |
| int saved_statval; /* as supplied by a syscall handler. */ |
| int new_child; /* Non-zero if it's a new thread */ |
| }; |
| |
| /* List of inferior process information */ |
| static struct procinfo *procinfo_list = NULL; |
| static struct pollfd *poll_list; /* pollfds used for waiting on /proc */ |
| |
| static int num_poll_list = 0; /* Number of entries in poll_list */ |
| |
| /* Much of the information used in the /proc interface, particularly for |
| printing status information, is kept as tables of structures of the |
| following form. These tables can be used to map numeric values to |
| their symbolic names and to a string that describes their specific use. */ |
| |
| struct trans |
| { |
| int value; /* The numeric value */ |
| char *name; /* The equivalent symbolic value */ |
| char *desc; /* Short description of value */ |
| }; |
| |
| /* Translate bits in the pr_flags member of the prstatus structure, into the |
| names and desc information. */ |
| |
| static struct trans pr_flag_table[] = |
| { |
| #if defined (PR_STOPPED) |
| {PR_STOPPED, "PR_STOPPED", "Process is stopped"}, |
| #endif |
| #if defined (PR_ISTOP) |
| {PR_ISTOP, "PR_ISTOP", "Stopped on an event of interest"}, |
| #endif |
| #if defined (PR_DSTOP) |
| {PR_DSTOP, "PR_DSTOP", "A stop directive is in effect"}, |
| #endif |
| #if defined (PR_ASLEEP) |
| {PR_ASLEEP, "PR_ASLEEP", "Sleeping in an interruptible system call"}, |
| #endif |
| #if defined (PR_FORK) |
| {PR_FORK, "PR_FORK", "Inherit-on-fork is in effect"}, |
| #endif |
| #if defined (PR_RLC) |
| {PR_RLC, "PR_RLC", "Run-on-last-close is in effect"}, |
| #endif |
| #if defined (PR_PTRACE) |
| {PR_PTRACE, "PR_PTRACE", "Process is being controlled by ptrace"}, |
| #endif |
| #if defined (PR_PCINVAL) |
| {PR_PCINVAL, "PR_PCINVAL", "PC refers to an invalid virtual address"}, |
| #endif |
| #if defined (PR_ISSYS) |
| {PR_ISSYS, "PR_ISSYS", "Is a system process"}, |
| #endif |
| #if defined (PR_STEP) |
| {PR_STEP, "PR_STEP", "Process has single step pending"}, |
| #endif |
| #if defined (PR_KLC) |
| {PR_KLC, "PR_KLC", "Kill-on-last-close is in effect"}, |
| #endif |
| #if defined (PR_ASYNC) |
| {PR_ASYNC, "PR_ASYNC", "Asynchronous stop is in effect"}, |
| #endif |
| #if defined (PR_PCOMPAT) |
| {PR_PCOMPAT, "PR_PCOMPAT", "Ptrace compatibility mode in effect"}, |
| #endif |
| #if defined (PR_MSACCT) |
| {PR_MSACCT, "PR_MSACCT", "Microstate accounting enabled"}, |
| #endif |
| #if defined (PR_BPTADJ) |
| {PR_BPTADJ, "PR_BPTADJ", "Breakpoint PC adjustment in effect"}, |
| #endif |
| #if defined (PR_ASLWP) |
| {PR_ASLWP, "PR_ASLWP", "Asynchronus signal LWP"}, |
| #endif |
| {0, NULL, NULL} |
| }; |
| |
| /* Translate values in the pr_why field of the prstatus struct. */ |
| |
| static struct trans pr_why_table[] = |
| { |
| #if defined (PR_REQUESTED) |
| {PR_REQUESTED, "PR_REQUESTED", "Directed to stop via PIOCSTOP/PIOCWSTOP"}, |
| #endif |
| #if defined (PR_SIGNALLED) |
| {PR_SIGNALLED, "PR_SIGNALLED", "Receipt of a traced signal"}, |
| #endif |
| #if defined (PR_SYSENTRY) |
| {PR_SYSENTRY, "PR_SYSENTRY", "Entry to a traced system call"}, |
| #endif |
| #if defined (PR_SYSEXIT) |
| {PR_SYSEXIT, "PR_SYSEXIT", "Exit from a traced system call"}, |
| #endif |
| #if defined (PR_JOBCONTROL) |
| {PR_JOBCONTROL, "PR_JOBCONTROL", "Default job control stop signal action"}, |
| #endif |
| #if defined (PR_FAULTED) |
| {PR_FAULTED, "PR_FAULTED", "Incurred a traced hardware fault"}, |
| #endif |
| #if defined (PR_SUSPENDED) |
| {PR_SUSPENDED, "PR_SUSPENDED", "Process suspended"}, |
| #endif |
| #if defined (PR_CHECKPOINT) |
| {PR_CHECKPOINT, "PR_CHECKPOINT", "(???)"}, |
| #endif |
| {0, NULL, NULL} |
| }; |
| |
| /* Hardware fault translation table. */ |
| |
| static struct trans faults_table[] = |
| { |
| #if defined (FLTILL) |
| {FLTILL, "FLTILL", "Illegal instruction"}, |
| #endif |
| #if defined (FLTPRIV) |
| {FLTPRIV, "FLTPRIV", "Privileged instruction"}, |
| #endif |
| #if defined (FLTBPT) |
| {FLTBPT, "FLTBPT", "Breakpoint trap"}, |
| #endif |
| #if defined (FLTTRACE) |
| {FLTTRACE, "FLTTRACE", "Trace trap"}, |
| #endif |
| #if defined (FLTACCESS) |
| {FLTACCESS, "FLTACCESS", "Memory access fault"}, |
| #endif |
| #if defined (FLTBOUNDS) |
| {FLTBOUNDS, "FLTBOUNDS", "Memory bounds violation"}, |
| #endif |
| #if defined (FLTIOVF) |
| {FLTIOVF, "FLTIOVF", "Integer overflow"}, |
| #endif |
| #if defined (FLTIZDIV) |
| {FLTIZDIV, "FLTIZDIV", "Integer zero divide"}, |
| #endif |
| #if defined (FLTFPE) |
| {FLTFPE, "FLTFPE", "Floating-point exception"}, |
| #endif |
| #if defined (FLTSTACK) |
| {FLTSTACK, "FLTSTACK", "Unrecoverable stack fault"}, |
| #endif |
| #if defined (FLTPAGE) |
| {FLTPAGE, "FLTPAGE", "Recoverable page fault"}, |
| #endif |
| {0, NULL, NULL} |
| }; |
| |
| /* Translation table for signal generation information. See UNIX System |
| V Release 4 Programmer's Reference Manual, siginfo(5). */ |
| |
| static struct sigcode |
| { |
| int signo; |
| int code; |
| char *codename; |
| char *desc; |
| } |
| siginfo_table[] = |
| { |
| #if defined (SIGILL) && defined (ILL_ILLOPC) |
| { |
| SIGILL, ILL_ILLOPC, "ILL_ILLOPC", "Illegal opcode" |
| } |
| , |
| #endif |
| #if defined (SIGILL) && defined (ILL_ILLOPN) |
| { |
| SIGILL, ILL_ILLOPN, "ILL_ILLOPN", "Illegal operand", |
| } |
| , |
| #endif |
| #if defined (SIGILL) && defined (ILL_ILLADR) |
| { |
| SIGILL, ILL_ILLADR, "ILL_ILLADR", "Illegal addressing mode" |
| } |
| , |
| #endif |
| #if defined (SIGILL) && defined (ILL_ILLTRP) |
| { |
| SIGILL, ILL_ILLTRP, "ILL_ILLTRP", "Illegal trap" |
| } |
| , |
| #endif |
| #if defined (SIGILL) && defined (ILL_PRVOPC) |
| { |
| SIGILL, ILL_PRVOPC, "ILL_PRVOPC", "Privileged opcode" |
| } |
| , |
| #endif |
| #if defined (SIGILL) && defined (ILL_PRVREG) |
| { |
| SIGILL, ILL_PRVREG, "ILL_PRVREG", "Privileged register" |
| } |
| , |
| #endif |
| #if defined (SIGILL) && defined (ILL_COPROC) |
| { |
| SIGILL, ILL_COPROC, "ILL_COPROC", "Coprocessor error" |
| } |
| , |
| #endif |
| #if defined (SIGILL) && defined (ILL_BADSTK) |
| { |
| SIGILL, ILL_BADSTK, "ILL_BADSTK", "Internal stack error" |
| } |
| , |
| #endif |
| #if defined (SIGFPE) && defined (FPE_INTDIV) |
| { |
| SIGFPE, FPE_INTDIV, "FPE_INTDIV", "Integer divide by zero" |
| } |
| , |
| #endif |
| #if defined (SIGFPE) && defined (FPE_INTOVF) |
| { |
| SIGFPE, FPE_INTOVF, "FPE_INTOVF", "Integer overflow" |
| } |
| , |
| #endif |
| #if defined (SIGFPE) && defined (FPE_FLTDIV) |
| { |
| SIGFPE, FPE_FLTDIV, "FPE_FLTDIV", "Floating point divide by zero" |
| } |
| , |
| #endif |
| #if defined (SIGFPE) && defined (FPE_FLTOVF) |
| { |
| SIGFPE, FPE_FLTOVF, "FPE_FLTOVF", "Floating point overflow" |
| } |
| , |
| #endif |
| #if defined (SIGFPE) && defined (FPE_FLTUND) |
| { |
| SIGFPE, FPE_FLTUND, "FPE_FLTUND", "Floating point underflow" |
| } |
| , |
| #endif |
| #if defined (SIGFPE) && defined (FPE_FLTRES) |
| { |
| SIGFPE, FPE_FLTRES, "FPE_FLTRES", "Floating point inexact result" |
| } |
| , |
| #endif |
| #if defined (SIGFPE) && defined (FPE_FLTINV) |
| { |
| SIGFPE, FPE_FLTINV, "FPE_FLTINV", "Invalid floating point operation" |
| } |
| , |
| #endif |
| #if defined (SIGFPE) && defined (FPE_FLTSUB) |
| { |
| SIGFPE, FPE_FLTSUB, "FPE_FLTSUB", "Subscript out of range" |
| } |
| , |
| #endif |
| #if defined (SIGSEGV) && defined (SEGV_MAPERR) |
| { |
| SIGSEGV, SEGV_MAPERR, "SEGV_MAPERR", "Address not mapped to object" |
| } |
| , |
| #endif |
| #if defined (SIGSEGV) && defined (SEGV_ACCERR) |
| { |
| SIGSEGV, SEGV_ACCERR, "SEGV_ACCERR", "Invalid permissions for object" |
| } |
| , |
| #endif |
| #if defined (SIGBUS) && defined (BUS_ADRALN) |
| { |
| SIGBUS, BUS_ADRALN, "BUS_ADRALN", "Invalid address alignment" |
| } |
| , |
| #endif |
| #if defined (SIGBUS) && defined (BUS_ADRERR) |
| { |
| SIGBUS, BUS_ADRERR, "BUS_ADRERR", "Non-existent physical address" |
| } |
| , |
| #endif |
| #if defined (SIGBUS) && defined (BUS_OBJERR) |
| { |
| SIGBUS, BUS_OBJERR, "BUS_OBJERR", "Object specific hardware error" |
| } |
| , |
| #endif |
| #if defined (SIGTRAP) && defined (TRAP_BRKPT) |
| { |
| SIGTRAP, TRAP_BRKPT, "TRAP_BRKPT", "Process breakpoint" |
| } |
| , |
| #endif |
| #if defined (SIGTRAP) && defined (TRAP_TRACE) |
| { |
| SIGTRAP, TRAP_TRACE, "TRAP_TRACE", "Process trace trap" |
| } |
| , |
| #endif |
| #if defined (SIGCLD) && defined (CLD_EXITED) |
| { |
| SIGCLD, CLD_EXITED, "CLD_EXITED", "Child has exited" |
| } |
| , |
| #endif |
| #if defined (SIGCLD) && defined (CLD_KILLED) |
| { |
| SIGCLD, CLD_KILLED, "CLD_KILLED", "Child was killed" |
| } |
| , |
| #endif |
| #if defined (SIGCLD) && defined (CLD_DUMPED) |
| { |
| SIGCLD, CLD_DUMPED, "CLD_DUMPED", "Child has terminated abnormally" |
| } |
| , |
| #endif |
| #if defined (SIGCLD) && defined (CLD_TRAPPED) |
| { |
| SIGCLD, CLD_TRAPPED, "CLD_TRAPPED", "Traced child has trapped" |
| } |
| , |
| #endif |
| #if defined (SIGCLD) && defined (CLD_STOPPED) |
| { |
| SIGCLD, CLD_STOPPED, "CLD_STOPPED", "Child has stopped" |
| } |
| , |
| #endif |
| #if defined (SIGCLD) && defined (CLD_CONTINUED) |
| { |
| SIGCLD, CLD_CONTINUED, "CLD_CONTINUED", "Stopped child had continued" |
| } |
| , |
| #endif |
| #if defined (SIGPOLL) && defined (POLL_IN) |
| { |
| SIGPOLL, POLL_IN, "POLL_IN", "Input input available" |
| } |
| , |
| #endif |
| #if defined (SIGPOLL) && defined (POLL_OUT) |
| { |
| SIGPOLL, POLL_OUT, "POLL_OUT", "Output buffers available" |
| } |
| , |
| #endif |
| #if defined (SIGPOLL) && defined (POLL_MSG) |
| { |
| SIGPOLL, POLL_MSG, "POLL_MSG", "Input message available" |
| } |
| , |
| #endif |
| #if defined (SIGPOLL) && defined (POLL_ERR) |
| { |
| SIGPOLL, POLL_ERR, "POLL_ERR", "I/O error" |
| } |
| , |
| #endif |
| #if defined (SIGPOLL) && defined (POLL_PRI) |
| { |
| SIGPOLL, POLL_PRI, "POLL_PRI", "High priority input available" |
| } |
| , |
| #endif |
| #if defined (SIGPOLL) && defined (POLL_HUP) |
| { |
| SIGPOLL, POLL_HUP, "POLL_HUP", "Device disconnected" |
| } |
| , |
| #endif |
| { |
| 0, 0, NULL, NULL |
| } |
| }; |
| |
| static char *syscall_table[MAX_SYSCALLS]; |
| |
| /* Prototypes for local functions */ |
| |
| static void procfs_stop PARAMS ((void)); |
| |
| static int procfs_thread_alive PARAMS ((int)); |
| |
| static int procfs_can_run PARAMS ((void)); |
| |
| static void procfs_mourn_inferior PARAMS ((void)); |
| |
| static void procfs_fetch_registers PARAMS ((int)); |
| |
| static int procfs_wait PARAMS ((int, struct target_waitstatus *)); |
| |
| static void procfs_open PARAMS ((char *, int)); |
| |
| static void procfs_files_info PARAMS ((struct target_ops *)); |
| |
| static void procfs_prepare_to_store PARAMS ((void)); |
| |
| static void procfs_detach PARAMS ((char *, int)); |
| |
| static void procfs_attach PARAMS ((char *, int)); |
| |
| static void proc_set_exec_trap PARAMS ((void)); |
| |
| static void procfs_init_inferior PARAMS ((int)); |
| |
| static struct procinfo *create_procinfo PARAMS ((int)); |
| |
| static void procfs_store_registers PARAMS ((int)); |
| |
| static int procfs_xfer_memory PARAMS ((CORE_ADDR, char *, int, int, struct target_ops *)); |
| |
| static void procfs_kill_inferior PARAMS ((void)); |
| |
| static char *sigcodedesc PARAMS ((siginfo_t *)); |
| |
| static char *sigcodename PARAMS ((siginfo_t *)); |
| |
| static struct procinfo *wait_fd PARAMS ((void)); |
| |
| static void remove_fd PARAMS ((struct procinfo *)); |
| |
| static void add_fd PARAMS ((struct procinfo *)); |
| |
| static void set_proc_siginfo PARAMS ((struct procinfo *, int)); |
| |
| static void init_syscall_table PARAMS ((void)); |
| |
| static char *syscallname PARAMS ((int)); |
| |
| static char *signalname PARAMS ((int)); |
| |
| static char *errnoname PARAMS ((int)); |
| |
| static int proc_address_to_fd PARAMS ((struct procinfo *, CORE_ADDR, int)); |
| |
| static int open_proc_file PARAMS ((int, struct procinfo *, int, int)); |
| |
| static void close_proc_file PARAMS ((struct procinfo *)); |
| |
| static void close_proc_file_cleanup PARAMS ((void *)); |
| |
| static struct cleanup *make_cleanup_close_proc_file PARAMS ((struct procinfo *)); |
| |
| static void unconditionally_kill_inferior PARAMS ((struct procinfo *)); |
| |
| static NORETURN void proc_init_failed |
| PARAMS ((struct procinfo *, char *, int)) ATTR_NORETURN; |
| |
| static void info_proc PARAMS ((char *, int)); |
| |
| static void info_proc_flags PARAMS ((struct procinfo *, int)); |
| |
| static void info_proc_stop PARAMS ((struct procinfo *, int)); |
| |
| static void info_proc_siginfo PARAMS ((struct procinfo *, int)); |
| |
| static void info_proc_syscalls PARAMS ((struct procinfo *, int)); |
| |
| static void info_proc_mappings PARAMS ((struct procinfo *, int)); |
| |
| static void info_proc_signals PARAMS ((struct procinfo *, int)); |
| |
| static void info_proc_faults PARAMS ((struct procinfo *, int)); |
| |
| static char *mappingflags PARAMS ((long)); |
| |
| static char *lookupname PARAMS ((struct trans *, unsigned int, char *)); |
| |
| static char *lookupdesc PARAMS ((struct trans *, unsigned int)); |
| |
| static int do_attach PARAMS ((int pid)); |
| |
| static void do_detach PARAMS ((int siggnal)); |
| |
| static void procfs_create_inferior PARAMS ((char *, char *, char **)); |
| |
| static void procfs_notice_signals PARAMS ((int pid)); |
| |
| static void notice_signals PARAMS ((struct procinfo *, struct sig_ctl *)); |
| |
| static struct procinfo *find_procinfo PARAMS ((pid_t pid, int okfail)); |
| |
| static int procfs_write_pcwstop PARAMS ((struct procinfo *)); |
| static int procfs_read_status PARAMS ((struct procinfo *)); |
| static void procfs_write_pckill PARAMS ((struct procinfo *)); |
| |
| typedef int syscall_func_t PARAMS ((struct procinfo * pi, int syscall_num, |
| int why, int *rtnval, int *statval)); |
| |
| static void procfs_set_syscall_trap PARAMS ((struct procinfo * pi, |
| int syscall_num, int flags, |
| syscall_func_t * func)); |
| |
| static void procfs_clear_syscall_trap PARAMS ((struct procinfo * pi, |
| int syscall_num, int errok)); |
| |
| #define PROCFS_SYSCALL_ENTRY 0x1 /* Trap on entry to sys call */ |
| #define PROCFS_SYSCALL_EXIT 0x2 /* Trap on exit from sys call */ |
| |
| static syscall_func_t procfs_exit_handler; |
| |
| static syscall_func_t procfs_exec_handler; |
| |
| #ifdef SYS_sproc |
| static syscall_func_t procfs_sproc_handler; |
| static syscall_func_t procfs_fork_handler; |
| #endif |
| |
| #ifdef SYS_lwp_create |
| static syscall_func_t procfs_lwp_creation_handler; |
| #endif |
| |
| static void modify_inherit_on_fork_flag PARAMS ((int fd, int flag)); |
| static void modify_run_on_last_close_flag PARAMS ((int fd, int flag)); |
| |
| /* */ |
| |
| struct procfs_syscall_handler |
| { |
| int syscall_num; /* The number of the system call being handled */ |
| /* The function to be called */ |
| syscall_func_t *func; |
| }; |
| |
| static void procfs_resume PARAMS ((int pid, int step, |
| enum target_signal signo)); |
| |
| static void init_procfs_ops PARAMS ((void)); |
| |
| /* External function prototypes that can't be easily included in any |
| header file because the args are typedefs in system include files. */ |
| |
| extern void supply_gregset PARAMS ((gdb_gregset_t *)); |
| |
| extern void fill_gregset PARAMS ((gdb_gregset_t *, int)); |
| |
| #ifdef FP0_REGNUM |
| extern void supply_fpregset PARAMS ((gdb_fpregset_t *)); |
| |
| extern void fill_fpregset PARAMS ((gdb_fpregset_t *, int)); |
| #endif |
| |
| /* |
| |
| LOCAL FUNCTION |
| |
| find_procinfo -- convert a process id to a struct procinfo |
| |
| SYNOPSIS |
| |
| static struct procinfo * find_procinfo (pid_t pid, int okfail); |
| |
| DESCRIPTION |
| |
| Given a process id, look it up in the procinfo chain. Returns |
| a struct procinfo *. If can't find pid, then call error(), |
| unless okfail is set, in which case, return NULL; |
| */ |
| |
| static struct procinfo * |
| find_procinfo (pid, okfail) |
| pid_t pid; |
| int okfail; |
| { |
| struct procinfo *procinfo; |
| |
| for (procinfo = procinfo_list; procinfo; procinfo = procinfo->next) |
| if (procinfo->pid == pid) |
| return procinfo; |
| |
| if (okfail) |
| return NULL; |
| |
| error ("procfs (find_procinfo): Couldn't locate pid %d", pid); |
| } |
| |
| /* |
| |
| LOCAL MACRO |
| |
| current_procinfo -- convert inferior_pid to a struct procinfo |
| |
| SYNOPSIS |
| |
| static struct procinfo * current_procinfo; |
| |
| DESCRIPTION |
| |
| Looks up inferior_pid in the procinfo chain. Always returns a |
| struct procinfo *. If process can't be found, we error() out. |
| */ |
| |
| #define current_procinfo find_procinfo (inferior_pid, 0) |
| |
| /* |
| |
| LOCAL FUNCTION |
| |
| add_fd -- Add the fd to the poll/select list |
| |
| SYNOPSIS |
| |
| static void add_fd (struct procinfo *); |
| |
| DESCRIPTION |
| |
| Add the fd of the supplied procinfo to the list of fds used for |
| poll/select operations. |
| */ |
| |
| static void |
| add_fd (pi) |
| struct procinfo *pi; |
| { |
| if (num_poll_list <= 0) |
| poll_list = (struct pollfd *) xmalloc (sizeof (struct pollfd)); |
| else |
| poll_list = (struct pollfd *) xrealloc (poll_list, |
| (num_poll_list + 1) |
| * sizeof (struct pollfd)); |
| poll_list[num_poll_list].fd = pi->ctl_fd; |
| #ifdef UNIXWARE |
| poll_list[num_poll_list].events = POLLWRNORM; |
| #else |
| poll_list[num_poll_list].events = POLLPRI; |
| #endif |
| |
| num_poll_list++; |
| } |
| |
| /* |
| |
| LOCAL FUNCTION |
| |
| remove_fd -- Remove the fd from the poll/select list |
| |
| SYNOPSIS |
| |
| static void remove_fd (struct procinfo *); |
| |
| DESCRIPTION |
| |
| Remove the fd of the supplied procinfo from the list of fds used |
| for poll/select operations. |
| */ |
| |
| static void |
| remove_fd (pi) |
| struct procinfo *pi; |
| { |
| int i; |
| |
| for (i = 0; i < num_poll_list; i++) |
| { |
| if (poll_list[i].fd == pi->ctl_fd) |
| { |
| if (i != num_poll_list - 1) |
| memcpy (poll_list + i, poll_list + i + 1, |
| (num_poll_list - i - 1) * sizeof (struct pollfd)); |
| |
| num_poll_list--; |
| |
| if (num_poll_list == 0) |
| free (poll_list); |
| else |
| poll_list = (struct pollfd *) xrealloc (poll_list, |
| num_poll_list |
| * sizeof (struct pollfd)); |
| return; |
| } |
| } |
| } |
| |
| /* |
| |
| LOCAL FUNCTION |
| |
| procfs_read_status - get procfs fd status |
| |
| SYNOPSIS |
| |
| static int procfs_read_status (pi) struct procinfo *pi; |
| |
| DESCRIPTION |
| |
| Given a pointer to a procinfo struct, get the status of |
| the status_fd in the appropriate way. Returns 0 on failure, |
| 1 on success. |
| */ |
| |
| static int |
| procfs_read_status (pi) |
| struct procinfo *pi; |
| { |
| #ifdef PROCFS_USE_READ_WRITE |
| if ((lseek (pi->status_fd, 0, SEEK_SET) < 0) || |
| (read (pi->status_fd, (char *) &pi->prstatus, |
| sizeof (gdb_prstatus_t)) != sizeof (gdb_prstatus_t))) |
| #else |
| if (ioctl (pi->status_fd, PIOCSTATUS, &pi->prstatus) < 0) |
| #endif |
| return 0; |
| else |
| return 1; |
| } |
| |
| /* |
| |
| LOCAL FUNCTION |
| |
| procfs_write_pcwstop - send a PCWSTOP to procfs fd |
| |
| SYNOPSIS |
| |
| static int procfs_write_pcwstop (pi) struct procinfo *pi; |
| |
| DESCRIPTION |
| |
| Given a pointer to a procinfo struct, send a PCWSTOP to |
| the ctl_fd in the appropriate way. Returns 0 on failure, |
| 1 on success. |
| */ |
| |
| static int |
| procfs_write_pcwstop (pi) |
| struct procinfo *pi; |
| { |
| #ifdef PROCFS_USE_READ_WRITE |
| long cmd = PCWSTOP; |
| if (write (pi->ctl_fd, (char *) &cmd, sizeof (long)) < 0) |
| #else |
| if (ioctl (pi->ctl_fd, PIOCWSTOP, &pi->prstatus) < 0) |
| #endif |
| return 0; |
| else |
| return 1; |
| } |
| |
| /* |
| |
| LOCAL FUNCTION |
| |
| procfs_write_pckill - send a kill to procfs fd |
| |
| SYNOPSIS |
| |
| static void procfs_write_pckill (pi) struct procinfo *pi; |
| |
| DESCRIPTION |
| |
| Given a pointer to a procinfo struct, send a kill to |
| the ctl_fd in the appropriate way. Returns 0 on failure, |
| 1 on success. |
| */ |
| |
| static void |
| procfs_write_pckill (pi) |
| struct procinfo *pi; |
| { |
| #ifdef PROCFS_USE_READ_WRITE |
| struct proc_ctl pctl; |
| pctl.cmd = PCKILL; |
| pctl.data = SIGKILL; |
| write (pi->ctl_fd, &pctl, sizeof (struct proc_ctl)); |
| #else |
| int signo = SIGKILL; |
| ioctl (pi->ctl_fd, PIOCKILL, &signo); |
| #endif |
| } |
| |
| static struct procinfo * |
| wait_fd () |
| { |
| struct procinfo *pi, *next_pi; |
| #ifndef LOSING_POLL |
| int num_fds; |
| int i; |
| #endif |
| |
| set_sigint_trap (); /* Causes SIGINT to be passed on to the |
| attached process. */ |
| set_sigio_trap (); |
| |
| wait_again: |
| #ifndef LOSING_POLL |
| while (1) |
| { |
| num_fds = poll (poll_list, num_poll_list, -1); |
| if (num_fds > 0) |
| break; |
| if (num_fds < 0 && errno == EINTR) |
| continue; |
| print_sys_errmsg ("poll failed", errno); |
| error ("Poll failed, returned %d", num_fds); |
| } |
| #else /* LOSING_POLL */ |
| pi = current_procinfo; |
| |
| while (!procfs_write_pcwstop (pi)) |
| { |
| if (errno == ENOENT) |
| { |
| /* Process exited. */ |
| pi->prstatus.pr_flags = 0; |
| break; |
| } |
| else if (errno != EINTR) |
| { |
| print_sys_errmsg (pi->pathname, errno); |
| error ("procfs_write_pcwstop failed"); |
| } |
| } |
| pi->had_event = 1; |
| #endif /* LOSING_POLL */ |
| |
| clear_sigint_trap (); |
| clear_sigio_trap (); |
| |
| #ifndef LOSING_POLL |
| |
| for (i = 0; i < num_poll_list && num_fds > 0; i++) |
| { |
| if (0 == (poll_list[i].revents & |
| (POLLWRNORM | POLLPRI | POLLERR | POLLHUP | POLLNVAL))) |
| continue; |
| for (pi = procinfo_list; pi; pi = next_pi) |
| { |
| next_pi = pi->next; |
| if (poll_list[i].fd == pi->ctl_fd) |
| { |
| num_fds--; |
| if ((poll_list[i].revents & POLLHUP) != 0 || |
| !procfs_read_status (pi)) |
| { /* The LWP has apparently terminated. */ |
| if (num_poll_list <= 1) |
| { |
| pi->prstatus.pr_flags = 0; |
| pi->had_event = 1; |
| break; |
| } |
| if (info_verbose) |
| printf_filtered ("LWP %d exited.\n", |
| (pi->pid >> 16) & 0xffff); |
| close_proc_file (pi); |
| i--; /* don't skip deleted entry */ |
| if (num_fds != 0) |
| break; /* already another event to process */ |
| else |
| goto wait_again; /* wait for another event */ |
| } |
| pi->had_event = 1; |
| break; |
| } |
| } |
| if (!pi) |
| error ("wait_fd: Couldn't find procinfo for fd %d\n", |
| poll_list[i].fd); |
| } |
| #endif /* LOSING_POLL */ |
| |
| return pi; |
| } |
| |
| /* |
| |
| LOCAL FUNCTION |
| |
| lookupdesc -- translate a value to a summary desc string |
| |
| SYNOPSIS |
| |
| static char *lookupdesc (struct trans *transp, unsigned int val); |
| |
| DESCRIPTION |
| |
| Given a pointer to a translation table and a value to be translated, |
| lookup the desc string and return it. |
| */ |
| |
| static char * |
| lookupdesc (transp, val) |
| struct trans *transp; |
| unsigned int val; |
| { |
| char *desc; |
| |
| for (desc = NULL; transp->name != NULL; transp++) |
| { |
| if (transp->value == val) |
| { |
| desc = transp->desc; |
| break; |
| } |
| } |
| |
| /* Didn't find a translation for the specified value, set a default one. */ |
| |
| if (desc == NULL) |
| { |
| desc = "Unknown"; |
| } |
| return (desc); |
| } |
| |
| /* |
| |
| LOCAL FUNCTION |
| |
| lookupname -- translate a value to symbolic name |
| |
| SYNOPSIS |
| |
| static char *lookupname (struct trans *transp, unsigned int val, |
| char *prefix); |
| |
| DESCRIPTION |
| |
| Given a pointer to a translation table, a value to be translated, |
| and a default prefix to return if the value can't be translated, |
| match the value with one of the translation table entries and |
| return a pointer to the symbolic name. |
| |
| If no match is found it just returns the value as a printable string, |
| with the given prefix. The previous such value, if any, is freed |
| at this time. |
| */ |
| |
| static char * |
| lookupname (transp, val, prefix) |
| struct trans *transp; |
| unsigned int val; |
| char *prefix; |
| { |
| static char *locbuf; |
| char *name; |
| |
| for (name = NULL; transp->name != NULL; transp++) |
| { |
| if (transp->value == val) |
| { |
| name = transp->name; |
| break; |
| } |
| } |
| |
| /* Didn't find a translation for the specified value, build a default |
| one using the specified prefix and return it. The lifetime of |
| the value is only until the next one is needed. */ |
| |
| if (name == NULL) |
| { |
| if (locbuf != NULL) |
| { |
| free (locbuf); |
| } |
| locbuf = xmalloc (strlen (prefix) + 16); |
| sprintf (locbuf, "%s %u", prefix, val); |
| name = locbuf; |
| } |
| return (name); |
| } |
| |
| static char * |
| sigcodename (sip) |
| siginfo_t *sip; |
| { |
| struct sigcode *scp; |
| char *name = NULL; |
| static char locbuf[32]; |
| |
| for (scp = siginfo_table; scp->codename != NULL; scp++) |
| { |
| if ((scp->signo == sip->si_signo) && |
| (scp->code == sip->si_code)) |
| { |
| name = scp->codename; |
| break; |
| } |
| } |
| if (name == NULL) |
| { |
| sprintf (locbuf, "sigcode %u", sip->si_signo); |
| name = locbuf; |
| } |
| return (name); |
| } |
| |
| static char * |
| sigcodedesc (sip) |
| siginfo_t *sip; |
| { |
| struct sigcode *scp; |
| char *desc = NULL; |
| |
| for (scp = siginfo_table; scp->codename != NULL; scp++) |
| { |
| if ((scp->signo == sip->si_signo) && |
| (scp->code == sip->si_code)) |
| { |
| desc = scp->desc; |
| break; |
| } |
| } |
| if (desc == NULL) |
| { |
| desc = "Unrecognized signal or trap use"; |
| } |
| return (desc); |
| } |
| |
| /* |
| |
| LOCAL FUNCTION |
| |
| syscallname - translate a system call number into a system call name |
| |
| SYNOPSIS |
| |
| char *syscallname (int syscallnum) |
| |
| DESCRIPTION |
| |
| Given a system call number, translate it into the printable name |
| of a system call, or into "syscall <num>" if it is an unknown |
| number. |
| */ |
| |
| static char * |
| syscallname (syscallnum) |
| int syscallnum; |
| { |
| static char locbuf[32]; |
| |
| if (syscallnum >= 0 && syscallnum < MAX_SYSCALLS |
| && syscall_table[syscallnum] != NULL) |
| return syscall_table[syscallnum]; |
| else |
| { |
| sprintf (locbuf, "syscall %u", syscallnum); |
| return locbuf; |
| } |
| } |
| |
| /* |
| |
| LOCAL FUNCTION |
| |
| init_syscall_table - initialize syscall translation table |
| |
| SYNOPSIS |
| |
| void init_syscall_table (void) |
| |
| DESCRIPTION |
| |
| Dynamically initialize the translation table to convert system |
| call numbers into printable system call names. Done once per |
| gdb run, on initialization. |
| |
| NOTES |
| |
| This is awfully ugly, but preprocessor tricks to make it prettier |
| tend to be nonportable. |
| */ |
| |
| static void |
| init_syscall_table () |
| { |
| #if defined (SYS_exit) |
| syscall_table[SYS_exit] = "exit"; |
| #endif |
| #if defined (SYS_fork) |
| syscall_table[SYS_fork] = "fork"; |
| #endif |
| #if defined (SYS_read) |
| syscall_table[SYS_read] = "read"; |
| #endif |
| #if defined (SYS_write) |
| syscall_table[SYS_write] = "write"; |
| #endif |
| #if defined (SYS_open) |
| syscall_table[SYS_open] = "open"; |
| #endif |
| #if defined (SYS_close) |
| syscall_table[SYS_close] = "close"; |
| #endif |
| #if defined (SYS_wait) |
| syscall_table[SYS_wait] = "wait"; |
| #endif |
| #if defined (SYS_creat) |
| syscall_table[SYS_creat] = "creat"; |
| #endif |
| #if defined (SYS_link) |
| syscall_table[SYS_link] = "link"; |
| #endif |
| #if defined (SYS_unlink) |
| syscall_table[SYS_unlink] = "unlink"; |
| #endif |
| #if defined (SYS_exec) |
| syscall_table[SYS_exec] = "exec"; |
| #endif |
| #if defined (SYS_execv) |
| syscall_table[SYS_execv] = "execv"; |
| #endif |
| #if defined (SYS_execve) |
| syscall_table[SYS_execve] = "execve"; |
| #endif |
| #if defined (SYS_chdir) |
| syscall_table[SYS_chdir] = "chdir"; |
| #endif |
| #if defined (SYS_time) |
| syscall_table[SYS_time] = "time"; |
| #endif |
| #if defined (SYS_mknod) |
| syscall_table[SYS_mknod] = "mknod"; |
| #endif |
| #if defined (SYS_chmod) |
| syscall_table[SYS_chmod] = "chmod"; |
| #endif |
| #if defined (SYS_chown) |
| syscall_table[SYS_chown] = "chown"; |
| #endif |
| #if defined (SYS_brk) |
| syscall_table[SYS_brk] = "brk"; |
| #endif |
| #if defined (SYS_stat) |
| syscall_table[SYS_stat] = "stat"; |
| #endif |
| #if defined (SYS_lseek) |
| syscall_table[SYS_lseek] = "lseek"; |
| #endif |
| #if defined (SYS_getpid) |
| syscall_table[SYS_getpid] = "getpid"; |
| #endif |
| #if defined (SYS_mount) |
| syscall_table[SYS_mount] = "mount"; |
| #endif |
| #if defined (SYS_umount) |
| syscall_table[SYS_umount] = "umount"; |
| #endif |
| #if defined (SYS_setuid) |
| syscall_table[SYS_setuid] = "setuid"; |
| #endif |
| #if defined (SYS_getuid) |
| syscall_table[SYS_getuid] = "getuid"; |
| #endif |
| #if defined (SYS_stime) |
| syscall_table[SYS_stime] = "stime"; |
| #endif |
| #if defined (SYS_ptrace) |
| syscall_table[SYS_ptrace] = "ptrace"; |
| #endif |
| #if defined (SYS_alarm) |
| syscall_table[SYS_alarm] = "alarm"; |
| #endif |
| #if defined (SYS_fstat) |
| syscall_table[SYS_fstat] = "fstat"; |
| #endif |
| #if defined (SYS_pause) |
| syscall_table[SYS_pause] = "pause"; |
| #endif |
| #if defined (SYS_utime) |
| syscall_table[SYS_utime] = "utime"; |
| #endif |
| #if defined (SYS_stty) |
| syscall_table[SYS_stty] = "stty"; |
| #endif |
| #if defined (SYS_gtty) |
| syscall_table[SYS_gtty] = "gtty"; |
| #endif |
| #if defined (SYS_access) |
| syscall_table[SYS_access] = "access"; |
| #endif |
| #if defined (SYS_nice) |
| syscall_table[SYS_nice] = "nice"; |
| #endif |
| #if defined (SYS_statfs) |
| syscall_table[SYS_statfs] = "statfs"; |
| #endif |
| #if defined (SYS_sync) |
| syscall_table[SYS_sync] = "sync"; |
| #endif |
| #if defined (SYS_kill) |
| syscall_table[SYS_kill] = "kill"; |
| #endif |
| #if defined (SYS_fstatfs) |
| syscall_table[SYS_fstatfs] = "fstatfs"; |
| #endif |
| #if defined (SYS_pgrpsys) |
| syscall_table[SYS_pgrpsys] = "pgrpsys"; |
| #endif |
| #if defined (SYS_xenix) |
| syscall_table[SYS_xenix] = "xenix"; |
| #endif |
| #if defined (SYS_dup) |
| syscall_table[SYS_dup] = "dup"; |
| #endif |
| #if defined (SYS_pipe) |
| syscall_table[SYS_pipe] = "pipe"; |
| #endif |
| #if defined (SYS_times) |
| syscall_table[SYS_times] = "times"; |
| #endif |
| #if defined (SYS_profil) |
| syscall_table[SYS_profil] = "profil"; |
| #endif |
| #if defined (SYS_plock) |
| syscall_table[SYS_plock] = "plock"; |
| #endif |
| #if defined (SYS_setgid) |
| syscall_table[SYS_setgid] = "setgid"; |
| #endif |
| #if defined (SYS_getgid) |
| syscall_table[SYS_getgid] = "getgid"; |
| #endif |
| #if defined (SYS_signal) |
| syscall_table[SYS_signal] = "signal"; |
| #endif |
| #if defined (SYS_msgsys) |
| syscall_table[SYS_msgsys] = "msgsys"; |
| #endif |
| #if defined (SYS_sys3b) |
| syscall_table[SYS_sys3b] = "sys3b"; |
| #endif |
| #if defined (SYS_sysi86) |
| syscall_table[SYS_sysi86] = "sysi86"; |
| #endif |
| #if defined (SYS_acct) |
| syscall_table[SYS_acct] = "acct"; |
| #endif |
| #if defined (SYS_shmsys) |
| syscall_table[SYS_shmsys] = "shmsys"; |
| #endif |
| #if defined (SYS_semsys) |
| syscall_table[SYS_semsys] = "semsys"; |
| #endif |
| #if defined (SYS_ioctl) |
| syscall_table[SYS_ioctl] = "ioctl"; |
| #endif |
| #if defined (SYS_uadmin) |
| syscall_table[SYS_uadmin] = "uadmin"; |
| #endif |
| #if defined (SYS_utssys) |
| syscall_table[SYS_utssys] = "utssys"; |
| #endif |
| #if defined (SYS_fsync) |
| syscall_table[SYS_fsync] = "fsync"; |
| #endif |
| #if defined (SYS_umask) |
| syscall_table[SYS_umask] = "umask"; |
| #endif |
| #if defined (SYS_chroot) |
| syscall_table[SYS_chroot] = "chroot"; |
| #endif |
| #if defined (SYS_fcntl) |
| syscall_table[SYS_fcntl] = "fcntl"; |
| #endif |
| #if defined (SYS_ulimit) |
| syscall_table[SYS_ulimit] = "ulimit"; |
| #endif |
| #if defined (SYS_rfsys) |
| syscall_table[SYS_rfsys] = "rfsys"; |
| #endif |
| #if defined (SYS_rmdir) |
| syscall_table[SYS_rmdir] = "rmdir"; |
| #endif |
| #if defined (SYS_mkdir) |
| syscall_table[SYS_mkdir] = "mkdir"; |
| #endif |
| #if defined (SYS_getdents) |
| syscall_table[SYS_getdents] = "getdents"; |
| #endif |
| #if defined (SYS_sysfs) |
| syscall_table[SYS_sysfs] = "sysfs"; |
| #endif |
| #if defined (SYS_getmsg) |
| syscall_table[SYS_getmsg] = "getmsg"; |
| #endif |
| #if defined (SYS_putmsg) |
| syscall_table[SYS_putmsg] = "putmsg"; |
| #endif |
| #if defined (SYS_poll) |
| syscall_table[SYS_poll] = "poll"; |
| #endif |
| #if defined (SYS_lstat) |
| syscall_table[SYS_lstat] = "lstat"; |
| #endif |
| #if defined (SYS_symlink) |
| syscall_table[SYS_symlink] = "symlink"; |
| #endif |
| #if defined (SYS_readlink) |
| syscall_table[SYS_readlink] = "readlink"; |
| #endif |
| #if defined (SYS_setgroups) |
| syscall_table[SYS_setgroups] = "setgroups"; |
| #endif |
| #if defined (SYS_getgroups) |
| syscall_table[SYS_getgroups] = "getgroups"; |
| #endif |
| #if defined (SYS_fchmod) |
| syscall_table[SYS_fchmod] = "fchmod"; |
| #endif |
| #if defined (SYS_fchown) |
| syscall_table[SYS_fchown] = "fchown"; |
| #endif |
| #if defined (SYS_sigprocmask) |
| syscall_table[SYS_sigprocmask] = "sigprocmask"; |
| #endif |
| #if defined (SYS_sigsuspend) |
| syscall_table[SYS_sigsuspend] = "sigsuspend"; |
| #endif |
| #if defined (SYS_sigaltstack) |
| syscall_table[SYS_sigaltstack] = "sigaltstack"; |
| #endif |
| #if defined (SYS_sigaction) |
| syscall_table[SYS_sigaction] = "sigaction"; |
| #endif |
| #if defined (SYS_sigpending) |
| syscall_table[SYS_sigpending] = "sigpending"; |
| #endif |
| #if defined (SYS_context) |
| syscall_table[SYS_context] = "context"; |
| #endif |
| #if defined (SYS_evsys) |
| syscall_table[SYS_evsys] = "evsys"; |
| #endif |
| #if defined (SYS_evtrapret) |
| syscall_table[SYS_evtrapret] = "evtrapret"; |
| #endif |
| #if defined (SYS_statvfs) |
| syscall_table[SYS_statvfs] = "statvfs"; |
| #endif |
| #if defined (SYS_fstatvfs) |
| syscall_table[SYS_fstatvfs] = "fstatvfs"; |
| #endif |
| #if defined (SYS_nfssys) |
| syscall_table[SYS_nfssys] = "nfssys"; |
| #endif |
| #if defined (SYS_waitsys) |
| syscall_table[SYS_waitsys] = "waitsys"; |
| #endif |
| #if defined (SYS_sigsendsys) |
| syscall_table[SYS_sigsendsys] = "sigsendsys"; |
| #endif |
| #if defined (SYS_hrtsys) |
| syscall_table[SYS_hrtsys] = "hrtsys"; |
| #endif |
| #if defined (SYS_acancel) |
| syscall_table[SYS_acancel] = "acancel"; |
| #endif |
| #if defined (SYS_async) |
| syscall_table[SYS_async] = "async"; |
| #endif |
| #if defined (SYS_priocntlsys) |
| syscall_table[SYS_priocntlsys] = "priocntlsys"; |
| #endif |
| #if defined (SYS_pathconf) |
| syscall_table[SYS_pathconf] = "pathconf"; |
| #endif |
| #if defined (SYS_mincore) |
| syscall_table[SYS_mincore] = "mincore"; |
| #endif |
| #if defined (SYS_mmap) |
| syscall_table[SYS_mmap] = "mmap"; |
| #endif |
| #if defined (SYS_mprotect) |
| syscall_table[SYS_mprotect] = "mprotect"; |
| #endif |
| #if defined (SYS_munmap) |
| syscall_table[SYS_munmap] = "munmap"; |
| #endif |
| #if defined (SYS_fpathconf) |
| syscall_table[SYS_fpathconf] = "fpathconf"; |
| #endif |
| #if defined (SYS_vfork) |
| syscall_table[SYS_vfork] = "vfork"; |
| #endif |
| #if defined (SYS_fchdir) |
| syscall_table[SYS_fchdir] = "fchdir"; |
| #endif |
| #if defined (SYS_readv) |
| syscall_table[SYS_readv] = "readv"; |
| #endif |
| #if defined (SYS_writev) |
| syscall_table[SYS_writev] = "writev"; |
| #endif |
| #if defined (SYS_xstat) |
| syscall_table[SYS_xstat] = "xstat"; |
| #endif |
| #if defined (SYS_lxstat) |
| syscall_table[SYS_lxstat] = "lxstat"; |
| #endif |
| #if defined (SYS_fxstat) |
| syscall_table[SYS_fxstat] = "fxstat"; |
| #endif |
| #if defined (SYS_xmknod) |
| syscall_table[SYS_xmknod] = "xmknod"; |
| #endif |
| #if defined (SYS_clocal) |
| syscall_table[SYS_clocal] = "clocal"; |
| #endif |
| #if defined (SYS_setrlimit) |
| syscall_table[SYS_setrlimit] = "setrlimit"; |
| #endif |
| #if defined (SYS_getrlimit) |
| syscall_table[SYS_getrlimit] = "getrlimit"; |
| #endif |
| #if defined (SYS_lchown) |
| syscall_table[SYS_lchown] = "lchown"; |
| #endif |
| #if defined (SYS_memcntl) |
| syscall_table[SYS_memcntl] = "memcntl"; |
| #endif |
| #if defined (SYS_getpmsg) |
| syscall_table[SYS_getpmsg] = "getpmsg"; |
| #endif |
| #if defined (SYS_putpmsg) |
| syscall_table[SYS_putpmsg] = "putpmsg"; |
| #endif |
| #if defined (SYS_rename) |
| syscall_table[SYS_rename] = "rename"; |
| #endif |
| #if defined (SYS_uname) |
| syscall_table[SYS_uname] = "uname"; |
| #endif |
| #if defined (SYS_setegid) |
| syscall_table[SYS_setegid] = "setegid"; |
| #endif |
| #if defined (SYS_sysconfig) |
| syscall_table[SYS_sysconfig] = "sysconfig"; |
| #endif |
| #if defined (SYS_adjtime) |
| syscall_table[SYS_adjtime] = "adjtime"; |
| #endif |
| #if defined (SYS_systeminfo) |
| syscall_table[SYS_systeminfo] = "systeminfo"; |
| #endif |
| #if defined (SYS_seteuid) |
| syscall_table[SYS_seteuid] = "seteuid"; |
| #endif |
| #if defined (SYS_sproc) |
| syscall_table[SYS_sproc] = "sproc"; |
| #endif |
| #if defined (SYS_keyctl) |
| syscall_table[SYS_keyctl] = "keyctl"; |
| #endif |
| #if defined (SYS_secsys) |
| syscall_table[SYS_secsys] = "secsys"; |
| #endif |
| #if defined (SYS_filepriv) |
| syscall_table[SYS_filepriv] = "filepriv"; |
| #endif |
| #if defined (SYS_procpriv) |
| syscall_table[SYS_procpriv] = "procpriv"; |
| #endif |
| #if defined (SYS_devstat) |
| syscall_table[SYS_devstat] = "devstat"; |
| #endif |
| #if defined (SYS_aclipc) |
| syscall_table[SYS_aclipc] = "aclipc"; |
| #endif |
| #if defined (SYS_fdevstat) |
| syscall_table[SYS_fdevstat] = "fdevstat"; |
| #endif |
| #if defined (SYS_flvlfile) |
| syscall_table[SYS_flvlfile] = "flvlfile"; |
| #endif |
| #if defined (SYS_lvlfile) |
| syscall_table[SYS_lvlfile] = "lvlfile"; |
| #endif |
| #if defined (SYS_lvlequal) |
| syscall_table[SYS_lvlequal] = "lvlequal"; |
| #endif |
| #if defined (SYS_lvlproc) |
| syscall_table[SYS_lvlproc] = "lvlproc"; |
| #endif |
| #if defined (SYS_lvlipc) |
| syscall_table[SYS_lvlipc] = "lvlipc"; |
| #endif |
| #if defined (SYS_acl) |
| syscall_table[SYS_acl] = "acl"; |
| #endif |
| #if defined (SYS_auditevt) |
| syscall_table[SYS_auditevt] = "auditevt"; |
| #endif |
| #if defined (SYS_auditctl) |
| syscall_table[SYS_auditctl] = "auditctl"; |
| #endif |
| #if defined (SYS_auditdmp) |
| syscall_table[SYS_auditdmp] = "auditdmp"; |
| #endif |
| #if defined (SYS_auditlog) |
| syscall_table[SYS_auditlog] = "auditlog"; |
| #endif |
| #if defined (SYS_auditbuf) |
| syscall_table[SYS_auditbuf] = "auditbuf"; |
| #endif |
| #if defined (SYS_lvldom) |
| syscall_table[SYS_lvldom] = "lvldom"; |
| #endif |
| #if defined (SYS_lvlvfs) |
| syscall_table[SYS_lvlvfs] = "lvlvfs"; |
| #endif |
| #if defined (SYS_mkmld) |
| syscall_table[SYS_mkmld] = "mkmld"; |
| #endif |
| #if defined (SYS_mldmode) |
| syscall_table[SYS_mldmode] = "mldmode"; |
| #endif |
| #if defined (SYS_secadvise) |
| syscall_table[SYS_secadvise] = "secadvise"; |
| #endif |
| #if defined (SYS_online) |
| syscall_table[SYS_online] = "online"; |
| #endif |
| #if defined (SYS_setitimer) |
| syscall_table[SYS_setitimer] = "setitimer"; |
| #endif |
| #if defined (SYS_getitimer) |
| syscall_table[SYS_getitimer] = "getitimer"; |
| #endif |
| #if defined (SYS_gettimeofday) |
| syscall_table[SYS_gettimeofday] = "gettimeofday"; |
| #endif |
| #if defined (SYS_settimeofday) |
| syscall_table[SYS_settimeofday] = "settimeofday"; |
| #endif |
| #if defined (SYS_lwp_create) |
| syscall_table[SYS_lwp_create] = "_lwp_create"; |
| #endif |
| #if defined (SYS_lwp_exit) |
| syscall_table[SYS_lwp_exit] = "_lwp_exit"; |
| #endif |
| #if defined (SYS_lwp_wait) |
| syscall_table[SYS_lwp_wait] = "_lwp_wait"; |
| #endif |
| #if defined (SYS_lwp_self) |
| syscall_table[SYS_lwp_self] = "_lwp_self"; |
| #endif |
| #if defined (SYS_lwp_info) |
| syscall_table[SYS_lwp_info] = "_lwp_info"; |
| #endif |
| #if defined (SYS_lwp_private) |
| syscall_table[SYS_lwp_private] = "_lwp_private"; |
| #endif |
| #if defined (SYS_processor_bind) |
| syscall_table[SYS_processor_bind] = "processor_bind"; |
| #endif |
| #if defined (SYS_processor_exbind) |
| syscall_table[SYS_processor_exbind] = "processor_exbind"; |
| #endif |
| #if defined (SYS_prepblock) |
| syscall_table[SYS_prepblock] = "prepblock"; |
| #endif |
| #if defined (SYS_block) |
| syscall_table[SYS_block] = "block"; |
| #endif |
| #if defined (SYS_rdblock) |
| syscall_table[SYS_rdblock] = "rdblock"; |
| #endif |
| #if defined (SYS_unblock) |
| syscall_table[SYS_unblock] = "unblock"; |
| #endif |
| #if defined (SYS_cancelblock) |
| syscall_table[SYS_cancelblock] = "cancelblock"; |
| #endif |
| #if defined (SYS_pread) |
| syscall_table[SYS_pread] = "pread"; |
| #endif |
| #if defined (SYS_pwrite) |
| syscall_table[SYS_pwrite] = "pwrite"; |
| #endif |
| #if defined (SYS_truncate) |
| syscall_table[SYS_truncate] = "truncate"; |
| #endif |
| #if defined (SYS_ftruncate) |
| syscall_table[SYS_ftruncate] = "ftruncate"; |
| #endif |
| #if defined (SYS_lwp_kill) |
| syscall_table[SYS_lwp_kill] = "_lwp_kill"; |
| #endif |
| #if defined (SYS_sigwait) |
| syscall_table[SYS_sigwait] = "sigwait"; |
| #endif |
| #if defined (SYS_fork1) |
| syscall_table[SYS_fork1] = "fork1"; |
| #endif |
| #if defined (SYS_forkall) |
| syscall_table[SYS_forkall] = "forkall"; |
| #endif |
| #if defined (SYS_modload) |
| syscall_table[SYS_modload] = "modload"; |
| #endif |
| #if defined (SYS_moduload) |
| syscall_table[SYS_moduload] = "moduload"; |
| #endif |
| #if defined (SYS_modpath) |
| syscall_table[SYS_modpath] = "modpath"; |
| #endif |
| #if defined (SYS_modstat) |
| syscall_table[SYS_modstat] = "modstat"; |
| #endif |
| #if defined (SYS_modadm) |
| syscall_table[SYS_modadm] = "modadm"; |
| #endif |
| #if defined (SYS_getksym) |
| syscall_table[SYS_getksym] = "getksym"; |
| #endif |
| #if defined (SYS_lwp_suspend) |
| syscall_table[SYS_lwp_suspend] = "_lwp_suspend"; |
| #endif |
| #if defined (SYS_lwp_continue) |
| syscall_table[SYS_lwp_continue] = "_lwp_continue"; |
| #endif |
| #if defined (SYS_priocntllst) |
| syscall_table[SYS_priocntllst] = "priocntllst"; |
| #endif |
| #if defined (SYS_sleep) |
| syscall_table[SYS_sleep] = "sleep"; |
| #endif |
| #if defined (SYS_lwp_sema_wait) |
| syscall_table[SYS_lwp_sema_wait] = "_lwp_sema_wait"; |
| #endif |
| #if defined (SYS_lwp_sema_post) |
| syscall_table[SYS_lwp_sema_post] = "_lwp_sema_post"; |
| #endif |
| #if defined (SYS_lwp_sema_trywait) |
| syscall_table[SYS_lwp_sema_trywait] = "lwp_sema_trywait"; |
| #endif |
| #if defined(SYS_fstatvfs64) |
| syscall_table[SYS_fstatvfs64] = "fstatvfs64"; |
| #endif |
| #if defined(SYS_statvfs64) |
| syscall_table[SYS_statvfs64] = "statvfs64"; |
| #endif |
| #if defined(SYS_ftruncate64) |
| syscall_table[SYS_ftruncate64] = "ftruncate64"; |
| #endif |
| #if defined(SYS_truncate64) |
| syscall_table[SYS_truncate64] = "truncate64"; |
| #endif |
| #if defined(SYS_getrlimit64) |
| syscall_table[SYS_getrlimit64] = "getrlimit64"; |
| #endif |
| #if defined(SYS_setrlimit64) |
| syscall_table[SYS_setrlimit64] = "setrlimit64"; |
| #endif |
| #if defined(SYS_lseek64) |
| syscall_table[SYS_lseek64] = "lseek64"; |
| #endif |
| #if defined(SYS_mmap64) |
| syscall_table[SYS_mmap64] = "mmap64"; |
| #endif |
| #if defined(SYS_pread64) |
| syscall_table[SYS_pread64] = "pread64"; |
| #endif |
| #if defined(SYS_creat64) |
| syscall_table[SYS_creat64] = "creat64"; |
| #endif |
| #if defined(SYS_dshmsys) |
| syscall_table[SYS_dshmsys] = "dshmsys"; |
| #endif |
| #if defined(SYS_invlpg) |
| syscall_table[SYS_invlpg] = "invlpg"; |
| #endif |
| #if defined(SYS_cg_ids) |
| syscall_table[SYS_cg_ids] = "cg_ids"; |
| #endif |
| #if defined(SYS_cg_processors) |
| syscall_table[SYS_cg_processors] = "cg_processors"; |
| #endif |
| #if defined(SYS_cg_info) |
| syscall_table[SYS_cg_info] = "cg_info"; |
| #endif |
| #if defined(SYS_cg_bind) |
| syscall_table[SYS_cg_bind] = "cg_bind"; |
| #endif |
| #if defined(SYS_cg_current) |
| syscall_table[SYS_cg_current] = "cg_current"; |
| #endif |
| #if defined(SYS_cg_memloc) |
| syscall_table[SYS_cg_memloc] = "cg_memloc"; |
| #endif |
| } |
| |
| /* |
| |
| LOCAL FUNCTION |
| |
| procfs_kill_inferior - kill any current inferior |
| |
| SYNOPSIS |
| |
| void procfs_kill_inferior (void) |
| |
| DESCRIPTION |
| |
| Kill any current inferior. |
| |
| NOTES |
| |
| Kills even attached inferiors. Presumably the user has already |
| been prompted that the inferior is an attached one rather than |
| one started by gdb. (FIXME?) |
| |
| */ |
| |
| static void |
| procfs_kill_inferior () |
| { |
| target_mourn_inferior (); |
| } |
| |
| /* |
| |
| LOCAL FUNCTION |
| |
| unconditionally_kill_inferior - terminate the inferior |
| |
| SYNOPSIS |
| |
| static void unconditionally_kill_inferior (struct procinfo *) |
| |
| DESCRIPTION |
| |
| Kill the specified inferior. |
| |
| NOTE |
| |
| A possibly useful enhancement would be to first try sending |
| the inferior a terminate signal, politely asking it to commit |
| suicide, before we murder it (we could call that |
| politely_kill_inferior()). |
| |
| */ |
| |
| static void |
| unconditionally_kill_inferior (pi) |
| struct procinfo *pi; |
| { |
| int ppid; |
| |
| ppid = pi->prstatus.pr_ppid; |
| |
| #ifdef PROCFS_NEED_CLEAR_CURSIG_FOR_KILL |
| /* Alpha OSF/1-3.x procfs needs a clear of the current signal |
| before the PIOCKILL, otherwise it might generate a corrupted core |
| file for the inferior. */ |
| ioctl (pi->ctl_fd, PIOCSSIG, NULL); |
| #endif |
| #ifdef PROCFS_NEED_PIOCSSIG_FOR_KILL |
| /* Alpha OSF/1-2.x procfs needs a PIOCSSIG call with a SIGKILL signal |
| to kill the inferior, otherwise it might remain stopped with a |
| pending SIGKILL. |
| We do not check the result of the PIOCSSIG, the inferior might have |
| died already. */ |
| { |
| struct siginfo newsiginfo; |
| |
| memset ((char *) &newsiginfo, 0, sizeof (newsiginfo)); |
| newsiginfo.si_signo = SIGKILL; |
| newsiginfo.si_code = 0; |
| newsiginfo.si_errno = 0; |
| newsiginfo.si_pid = getpid (); |
| newsiginfo.si_uid = getuid (); |
| ioctl (pi->ctl_fd, PIOCSSIG, &newsiginfo); |
| } |
| #else /* PROCFS_NEED_PIOCSSIG_FOR_KILL */ |
| procfs_write_pckill (pi); |
| #endif /* PROCFS_NEED_PIOCSSIG_FOR_KILL */ |
| |
| close_proc_file (pi); |
| |
| /* Only wait() for our direct children. Our grandchildren zombies are killed |
| by the death of their parents. */ |
| |
| if (ppid == getpid ()) |
| wait ((int *) 0); |
| } |
| |
| /* |
| |
| LOCAL FUNCTION |
| |
| procfs_xfer_memory -- copy data to or from inferior memory space |
| |
| SYNOPSIS |
| |
| int procfs_xfer_memory (CORE_ADDR memaddr, char *myaddr, int len, |
| int dowrite, struct target_ops target) |
| |
| DESCRIPTION |
| |
| Copy LEN bytes to/from inferior's memory starting at MEMADDR |
| from/to debugger memory starting at MYADDR. Copy from inferior |
| if DOWRITE is zero or to inferior if DOWRITE is nonzero. |
| |
| Returns the length copied, which is either the LEN argument or |
| zero. This xfer function does not do partial moves, since procfs_ops |
| doesn't allow memory operations to cross below us in the target stack |
| anyway. |
| |
| NOTES |
| |
| The /proc interface makes this an almost trivial task. |
| */ |
| |
| static int |
| procfs_xfer_memory (memaddr, myaddr, len, dowrite, target) |
| CORE_ADDR memaddr; |
| char *myaddr; |
| int len; |
| int dowrite; |
| struct target_ops *target; /* ignored */ |
| { |
| int nbytes = 0; |
| struct procinfo *pi; |
| |
| pi = current_procinfo; |
| |
| if (lseek (pi->as_fd, (off_t) memaddr, SEEK_SET) == (off_t) memaddr) |
| { |
| if (dowrite) |
| { |
| nbytes = write (pi->as_fd, myaddr, len); |
| } |
| else |
| { |
| nbytes = read (pi->as_fd, myaddr, len); |
| } |
| if (nbytes < 0) |
| { |
| nbytes = 0; |
| } |
| } |
| return (nbytes); |
| } |
| |
| /* |
| |
| LOCAL FUNCTION |
| |
| procfs_store_registers -- copy register values back to inferior |
| |
| SYNOPSIS |
| |
| void procfs_store_registers (int regno) |
| |
| DESCRIPTION |
| |
| Store our current register values back into the inferior. If |
| REGNO is -1 then store all the register, otherwise store just |
| the value specified by REGNO. |
| |
| NOTES |
| |
| If we are storing only a single register, we first have to get all |
| the current values from the process, overwrite the desired register |
| in the gregset with the one we want from gdb's registers, and then |
| send the whole set back to the process. For writing all the |
| registers, all we have to do is generate the gregset and send it to |
| the process. |
| |
| Also note that the process has to be stopped on an event of interest |
| for this to work, which basically means that it has to have been |
| run under the control of one of the other /proc ioctl calls and not |
| ptrace. Since we don't use ptrace anyway, we don't worry about this |
| fine point, but it is worth noting for future reference. |
| |
| Gdb is confused about what this function is supposed to return. |
| Some versions return a value, others return nothing. Some are |
| declared to return a value and actually return nothing. Gdb ignores |
| anything returned. (FIXME) |
| |
| */ |
| |
| static void |
| procfs_store_registers (regno) |
| int regno; |
| { |
| struct procinfo *pi; |
| #ifdef PROCFS_USE_READ_WRITE |
| struct greg_ctl greg; |
| struct fpreg_ctl fpreg; |
| #endif |
| |
| pi = current_procinfo; |
| |
| #ifdef PROCFS_USE_READ_WRITE |
| if (regno != -1) |
| { |
| procfs_read_status (pi); |
| memcpy ((char *) &greg.gregset, |
| (char *) &pi->prstatus.pr_lwp.pr_context.uc_mcontext.gregs, |
| sizeof (gdb_gregset_t)); |
| } |
| fill_gregset (&greg.gregset, regno); |
| greg.cmd = PCSREG; |
| write (pi->ctl_fd, &greg, sizeof (greg)); |
| #else /* PROCFS_USE_READ_WRITE */ |
| if (regno != -1) |
| { |
| ioctl (pi->ctl_fd, PIOCGREG, &pi->gregset.gregset); |
| } |
| fill_gregset (&pi->gregset.gregset, regno); |
| ioctl (pi->ctl_fd, PIOCSREG, &pi->gregset.gregset); |
| #endif /* PROCFS_USE_READ_WRITE */ |
| |
| #if defined (FP0_REGNUM) |
| |
| /* Now repeat everything using the floating point register set, if the |
| target has floating point hardware. Since we ignore the returned value, |
| we'll never know whether it worked or not anyway. */ |
| |
| #ifdef PROCFS_USE_READ_WRITE |
| if (regno != -1) |
| { |
| procfs_read_status (pi); |
| memcpy ((char *) &fpreg.fpregset, |
| (char *) &pi->prstatus.pr_lwp.pr_context.uc_mcontext.fpregs, |
| sizeof (gdb_fpregset_t)); |
| } |
| fill_fpregset (&fpreg.fpregset, regno); |
| fpreg.cmd = PCSFPREG; |
| write (pi->ctl_fd, &fpreg, sizeof (fpreg)); |
| #else /* PROCFS_USE_READ_WRITE */ |
| if (regno != -1) |
| { |
| ioctl (pi->ctl_fd, PIOCGFPREG, &pi->fpregset.fpregset); |
| } |
| fill_fpregset (&pi->fpregset.fpregset, regno); |
| ioctl (pi->ctl_fd, PIOCSFPREG, &pi->fpregset.fpregset); |
| #endif /* PROCFS_USE_READ_WRITE */ |
| |
| #endif /* FP0_REGNUM */ |
| |
| } |
| |
| /* |
| |
| LOCAL FUNCTION |
| |
| init_procinfo - setup a procinfo struct and connect it to a process |
| |
| SYNOPSIS |
| |
| struct procinfo * init_procinfo (int pid) |
| |
| DESCRIPTION |
| |
| Allocate a procinfo structure, open the /proc file and then set up the |
| set of signals and faults that are to be traced. Returns a pointer to |
| the new procinfo structure. |
| |
| NOTES |
| |
| If proc_init_failed ever gets called, control returns to the command |
| processing loop via the standard error handling code. |
| |
| */ |
| |
| static struct procinfo * |
| init_procinfo (pid, kill) |
| int pid; |
| int kill; |
| { |
| struct procinfo *pi = (struct procinfo *) |
| xmalloc (sizeof (struct procinfo)); |
| #ifdef UNIXWARE |
| struct sig_ctl sctl; |
| #endif /* UNIXWARE */ |
| |
| memset ((char *) pi, 0, sizeof (*pi)); |
| if (!open_proc_file (pid, pi, O_RDWR, 1)) |
| proc_init_failed (pi, "can't open process file", kill); |
| |
| /* open_proc_file may modify pid. */ |
| |
| pid = pi->pid; |
| |
| /* Add new process to process info list */ |
| |
| pi->next = procinfo_list; |
| procinfo_list = pi; |
| |
| add_fd (pi); /* Add to list for poll/select */ |
| |
| /* Remember some things about the inferior that we will, or might, change |
| so that we can restore them when we detach. */ |
| #ifdef UNIXWARE |
| memcpy ((char *) &pi->saved_trace.sigset, |
| (char *) &pi->prstatus.pr_sigtrace, sizeof (sigset_t)); |
| memcpy ((char *) &pi->saved_fltset.fltset, |
| (char *) &pi->prstatus.pr_flttrace, sizeof (fltset_t)); |
| memcpy ((char *) &pi->saved_entryset.sysset, |
| (char *) &pi->prstatus.pr_sysentry, sizeof (sysset_t)); |
| memcpy ((char *) &pi->saved_exitset.sysset, |
| (char *) &pi->prstatus.pr_sysexit, sizeof (sysset_t)); |
| |
| /* Set up trace and fault sets, as gdb expects them. */ |
| |
| prfillset (&sctl.sigset); |
| notice_signals (pi, &sctl); |
| #else /* ! UNIXWARE */ |
| ioctl (pi->ctl_fd, PIOCGTRACE, &pi->saved_trace.sigset); |
| ioctl (pi->ctl_fd, PIOCGHOLD, &pi->saved_sighold.sigset); |
| ioctl (pi->ctl_fd, PIOCGFAULT, &pi->saved_fltset.fltset); |
| ioctl (pi->ctl_fd, PIOCGENTRY, &pi->saved_entryset.sysset); |
| ioctl (pi->ctl_fd, PIOCGEXIT, &pi->saved_exitset.sysset); |
| |
| /* Set up trace and fault sets, as gdb expects them. */ |
| |
| memset ((char *) &pi->prrun, 0, sizeof (pi->prrun)); |
| prfillset (&pi->prrun.pr_trace); |
| procfs_notice_signals (pid); |
| #endif /* UNIXWARE */ |
| |
| if (!procfs_read_status (pi)) |
| proc_init_failed (pi, "procfs_read_status failed", kill); |
| |
| return pi; |
| } |
| |
| /* |
| |
| LOCAL FUNCTION |
| |
| create_procinfo - initialize access to a /proc entry |
| |
| SYNOPSIS |
| |
| struct procinfo * create_procinfo (int pid) |
| |
| DESCRIPTION |
| |
| Allocate a procinfo structure, open the /proc file and then set up the |
| set of signals and faults that are to be traced. Returns a pointer to |
| the new procinfo structure. |
| |
| NOTES |
| |
| If proc_init_failed ever gets called, control returns to the command |
| processing loop via the standard error handling code. |
| |
| */ |
| |
| static struct procinfo * |
| create_procinfo (pid) |
| int pid; |
| { |
| struct procinfo *pi; |
| #ifdef PROCFS_USE_READ_WRITE |
| struct flt_ctl fctl; |
| #endif |
| |
| pi = find_procinfo (pid, 1); |
| if (pi != NULL) |
| return pi; /* All done! It already exists */ |
| |
| pi = init_procinfo (pid, 1); |
| |
| #ifndef UNIXWARE |
| /* A bug in Solaris (2.5 at least) causes PIOCWSTOP to hang on LWPs that are |
| already stopped, even if they all have PR_ASYNC set. */ |
| if (!(pi->prstatus.pr_flags & PR_STOPPED)) |
| #endif |
| if (!procfs_write_pcwstop (pi)) |
| proc_init_failed (pi, "procfs_write_pcwstop failed", 1); |
| |
| #ifdef PROCFS_USE_READ_WRITE |
| fctl.cmd = PCSFAULT; |
| prfillset (&fctl.fltset); |
| prdelset (&fctl.fltset, FLTPAGE); |
| |
| if (write (pi->ctl_fd, (char *) &fctl, sizeof (struct flt_ctl)) < 0) |
| proc_init_failed (pi, "PCSFAULT failed", 1); |
| #else |
| prfillset (&pi->prrun.pr_fault); |
| prdelset (&pi->prrun.pr_fault, FLTPAGE); |
| #ifdef PROCFS_DONT_TRACE_FAULTS |
| premptyset (&pi->prrun.pr_fault); |
| #endif |
| if (ioctl (pi->ctl_fd, PIOCSFAULT, &pi->prrun.pr_fault) < 0) |
| proc_init_failed (pi, "PIOCSFAULT failed", 1); |
| #endif |
| |
| return pi; |
| } |
| |
| /* |
| |
| LOCAL FUNCTION |
| |
| procfs_exit_handler - handle entry into the _exit syscall |
| |
| SYNOPSIS |
| |
| int procfs_exit_handler (pi, syscall_num, why, rtnvalp, statvalp) |
| |
| DESCRIPTION |
| |
| This routine is called when an inferior process enters the _exit() |
| system call. It continues the process, and then collects the exit |
| status and pid which are returned in *statvalp and *rtnvalp. After |
| that it returns non-zero to indicate that procfs_wait should wake up. |
| |
| NOTES |
| There is probably a better way to do this. |
| |
| */ |
| |
| static int |
| procfs_exit_handler (pi, syscall_num, why, rtnvalp, statvalp) |
| struct procinfo *pi; |
| int syscall_num; |
| int why; |
| int *rtnvalp; |
| int *statvalp; |
| { |
| struct procinfo *temp_pi, *next_pi; |
| #if defined (UNIXWARE) || defined (PROCFS_USE_READ_WRITE) |
| struct proc_ctl pctl; |
| #endif |
| |
| #ifdef UNIXWARE |
| pctl.cmd = PCRUN; |
| pctl.data = PRCFAULT; |
| #else |
| pi->prrun.pr_flags = PRCFAULT; |
| #endif |
| |
| #ifdef PROCFS_USE_READ_WRITE |
| if (write (pi->ctl_fd, (char *) &pctl, sizeof (struct proc_ctl)) < 0) |
| #else |
| if (ioctl (pi->ctl_fd, PIOCRUN, &pi->prrun) != 0) |
| #endif |
| perror_with_name (pi->pathname); |
| |
| if (attach_flag) |
| { |
| /* Claim it exited (don't call wait). */ |
| if (info_verbose) |
| printf_filtered ("(attached process has exited)\n"); |
| *statvalp = 0; |
| *rtnvalp = inferior_pid; |
| } |
| else |
| { |
| *rtnvalp = wait (statvalp); |
| if (*rtnvalp >= 0) |
| *rtnvalp = pi->pid; |
| } |
| |
| /* Close ALL open proc file handles, |
| except the one that called SYS_exit. */ |
| for (temp_pi = procinfo_list; temp_pi; temp_pi = next_pi) |
| { |
| next_pi = temp_pi->next; |
| if (temp_pi == pi) |
| continue; /* Handled below */ |
| close_proc_file (temp_pi); |
| } |
| return 1; |
| } |
| |
| /* |
| |
| LOCAL FUNCTION |
| |
| procfs_exec_handler - handle exit from the exec family of syscalls |
| |
| SYNOPSIS |
| |
| int procfs_exec_handler (pi, syscall_num, why, rtnvalp, statvalp) |
| |
| DESCRIPTION |
| |
| This routine is called when an inferior process is about to finish any |
| of the exec() family of system calls. It pretends that we got a |
| SIGTRAP (for compatibility with ptrace behavior), and returns non-zero |
| to tell procfs_wait to wake up. |
| |
| NOTES |
| This need for compatibility with ptrace is questionable. In the |
| future, it shouldn't be necessary. |
| |
| */ |
| |
| static int |
| procfs_exec_handler (pi, syscall_num, why, rtnvalp, statvalp) |
| struct procinfo *pi; |
| int syscall_num; |
| int why; |
| int *rtnvalp; |
| int *statvalp; |
| { |
| *statvalp = (SIGTRAP << 8) | 0177; |
| |
| return 1; |
| } |
| |
| #if defined(SYS_sproc) && !defined(UNIXWARE) |
| /* IRIX lwp creation system call */ |
| |
| /* |
| |
| LOCAL FUNCTION |
| |
| procfs_sproc_handler - handle exit from the sproc syscall |
| |
| SYNOPSIS |
| |
| int procfs_sproc_handler (pi, syscall_num, why, rtnvalp, statvalp) |
| |
| DESCRIPTION |
| |
| This routine is called when an inferior process is about to finish an |
| sproc() system call. This is the system call that IRIX uses to create |
| a lightweight process. When the target process gets this event, we can |
| look at rval1 to find the new child processes ID, and create a new |
| procinfo struct from that. |
| |
| After that, it pretends that we got a SIGTRAP, and returns non-zero |
| to tell procfs_wait to wake up. Subsequently, wait_for_inferior gets |
| woken up, sees the new process and continues it. |
| |
| NOTES |
| We actually never see the child exiting from sproc because we will |
| shortly stop the child with PIOCSTOP, which is then registered as the |
| event of interest. |
| */ |
| |
| static int |
| procfs_sproc_handler (pi, syscall_num, why, rtnvalp, statvalp) |
| struct procinfo *pi; |
| int syscall_num; |
| int why; |
| int *rtnvalp; |
| int *statvalp; |
| { |
| /* We've just detected the completion of an sproc system call. Now we need to |
| setup a procinfo struct for this thread, and notify the thread system of the |
| new arrival. */ |
| |
| /* If sproc failed, then nothing interesting happened. Continue the process |
| and go back to sleep. */ |
| |
| if (pi->prstatus.pr_errno != 0) |
| { |
| pi->prrun.pr_flags &= PRSTEP; |
| pi->prrun.pr_flags |= PRCFAULT; |
| |
| if (ioctl (pi->ctl_fd, PIOCRUN, &pi->prrun) != 0) |
| perror_with_name (pi->pathname); |
| |
| return 0; |
| } |
| |
| /* At this point, the new thread is stopped at it's first instruction, and |
| the parent is stopped at the exit from sproc. */ |
| |
| /* Notify the caller of the arrival of a new thread. */ |
| create_procinfo (pi->prstatus.pr_rval1); |
| |
| *rtnvalp = pi->prstatus.pr_rval1; |
| *statvalp = (SIGTRAP << 8) | 0177; |
| |
| return 1; |
| } |
| |
| /* |
| |
| LOCAL FUNCTION |
| |
| procfs_fork_handler - handle exit from the fork syscall |
| |
| SYNOPSIS |
| |
| int procfs_fork_handler (pi, syscall_num, why, rtnvalp, statvalp) |
| |
| DESCRIPTION |
| |
| This routine is called when an inferior process is about to finish a |
| fork() system call. We will open up the new process, and then close |
| it, which releases it from the clutches of the debugger. |
| |
| After that, we continue the target process as though nothing had |
| happened. |
| |
| NOTES |
| This is necessary for IRIX because we have to set PR_FORK in order |
| to catch the creation of lwps (via sproc()). When an actual fork |
| occurs, it becomes necessary to reset the forks debugger flags and |
| continue it because we can't hack multiple processes yet. |
| */ |
| |
| static int |
| procfs_fork_handler (pi, syscall_num, why, rtnvalp, statvalp) |
| struct procinfo *pi; |
| int syscall_num; |
| int why; |
| int *rtnvalp; |
| int *statvalp; |
| { |
| struct procinfo *pitemp; |
| |
| /* At this point, we've detected the completion of a fork (or vfork) call in |
| our child. The grandchild is also stopped because we set inherit-on-fork |
| earlier. (Note that nobody has the grandchilds' /proc file open at this |
| point.) We will release the grandchild from the debugger by opening it's |
| /proc file and then closing it. Since run-on-last-close is set, the |
| grandchild continues on its' merry way. */ |
| |
| |
| pitemp = create_procinfo (pi->prstatus.pr_rval1); |
| if (pitemp) |
| close_proc_file (pitemp); |
| |
| if (ioctl (pi->ctl_fd, PIOCRUN, &pi->prrun) != 0) |
| perror_with_name (pi->pathname); |
| |
| return 0; |
| } |
| #endif /* SYS_sproc && !UNIXWARE */ |
| |
| /* |
| |
| LOCAL FUNCTION |
| |
| procfs_set_inferior_syscall_traps - setup the syscall traps |
| |
| SYNOPSIS |
| |
| void procfs_set_inferior_syscall_traps (struct procinfo *pip) |
| |
| DESCRIPTION |
| |
| Called for each "procinfo" (process, thread, or LWP) in the |
| inferior, to register for notification of and handlers for |
| syscall traps in the inferior. |
| |
| */ |
| |
| static void |
| procfs_set_inferior_syscall_traps (pip) |
| struct procinfo *pip; |
| { |
| procfs_set_syscall_trap (pip, SYS_exit, PROCFS_SYSCALL_ENTRY, |
| procfs_exit_handler); |
| |
| #ifndef PRFS_STOPEXEC |
| #ifdef SYS_exec |
| procfs_set_syscall_trap (pip, SYS_exec, PROCFS_SYSCALL_EXIT, |
| procfs_exec_handler); |
| #endif |
| #ifdef SYS_execv |
| procfs_set_syscall_trap (pip, SYS_execv, PROCFS_SYSCALL_EXIT, |
| procfs_exec_handler); |
| #endif |
| #ifdef SYS_execve |
| procfs_set_syscall_trap (pip, SYS_execve, PROCFS_SYSCALL_EXIT, |
| procfs_exec_handler); |
| #endif |
| #endif /* PRFS_STOPEXEC */ |
| |
| /* Setup traps on exit from sproc() */ |
| |
| #ifdef SYS_sproc |
| procfs_set_syscall_trap (pip, SYS_sproc, PROCFS_SYSCALL_EXIT, |
| procfs_sproc_handler); |
| procfs_set_syscall_trap (pip, SYS_fork, PROCFS_SYSCALL_EXIT, |
| procfs_fork_handler); |
| #ifdef SYS_vfork |
| procfs_set_syscall_trap (pip, SYS_vfork, PROCFS_SYSCALL_EXIT, |
| procfs_fork_handler); |
| #endif |
| /* Turn on inherit-on-fork flag so that all children of the target process |
| start with tracing flags set. This allows us to trap lwp creation. Note |
| that we also have to trap on fork and vfork in order to disable all tracing |
| in the targets child processes. */ |
| |
| modify_inherit_on_fork_flag (pip->ctl_fd, 1); |
| #endif |
| |
| #ifdef SYS_lwp_create |
| procfs_set_syscall_trap (pip, SYS_lwp_create, PROCFS_SYSCALL_EXIT, |
| procfs_lwp_creation_handler); |
| #endif |
| } |
| |
| /* |
| |
| LOCAL FUNCTION |
| |
| procfs_init_inferior - initialize target vector and access to a |
| /proc entry |
| |
| SYNOPSIS |
| |
| void procfs_init_inferior (int pid) |
| |
| DESCRIPTION |
| |
| When gdb starts an inferior, this function is called in the parent |
| process immediately after the fork. It waits for the child to stop |
| on the return from the exec system call (the child itself takes care |
| of ensuring that this is set up), then sets up the set of signals |
| and faults that are to be traced. Returns the pid, which may have had |
| the thread-id added to it. |
| |
| NOTES |
| |
| If proc_init_failed ever gets called, control returns to the command |
| processing loop via the standard error handling code. |
| |
| */ |
| |
| static void |
| procfs_init_inferior (pid) |
| int pid; |
| { |
| struct procinfo *pip; |
| |
| push_target (&procfs_ops); |
| |
| pip = create_procinfo (pid); |
| |
| procfs_set_inferior_syscall_traps (pip); |
| |
| /* create_procinfo may change the pid, so we have to update inferior_pid |
| here before calling other gdb routines that need the right pid. */ |
| |
| pid = pip->pid; |
| inferior_pid = pid; |
| |
| add_thread (pip->pid); /* Setup initial thread */ |
| |
| #ifdef START_INFERIOR_TRAPS_EXPECTED |
| startup_inferior (START_INFERIOR_TRAPS_EXPECTED); |
| #else |
| /* One trap to exec the shell, one to exec the program being debugged. */ |
| startup_inferior (2); |
| #endif |
| } |
| |
| /* |
| |
| GLOBAL FUNCTION |
| |
| procfs_notice_signals |
| |
| SYNOPSIS |
| |
| static void procfs_notice_signals (int pid); |
| |
| DESCRIPTION |
| |
| When the user changes the state of gdb's signal handling via the |
| "handle" command, this function gets called to see if any change |
| in the /proc interface is required. It is also called internally |
| by other /proc interface functions to initialize the state of |
| the traced signal set. |
| |
| One thing it does is that signals for which the state is "nostop", |
| "noprint", and "pass", have their trace bits reset in the pr_trace |
| field, so that they are no longer traced. This allows them to be |
| delivered directly to the inferior without the debugger ever being |
| involved. |
| */ |
| |
| static void |
| procfs_notice_signals (pid) |
| int pid; |
| { |
| struct procinfo *pi; |
| struct sig_ctl sctl; |
| |
| pi = find_procinfo (pid, 0); |
| |
| #ifndef HAVE_PRRUN_T |
| premptyset (&sctl.sigset); |
| #else |
| sctl.sigset = pi->prrun.pr_trace; |
| #endif |
| |
| notice_signals (pi, &sctl); |
| |
| #ifdef HAVE_PRRUN_T |
| pi->prrun.pr_trace = sctl.sigset; |
| #endif |
| } |
| |
| static void |
| notice_signals (pi, sctl) |
| struct procinfo *pi; |
| struct sig_ctl *sctl; |
| { |
| int signo; |
| |
| for (signo = 0; signo < NSIG; signo++) |
| { |
| if (signal_stop_state (target_signal_from_host (signo)) == 0 && |
| signal_print_state (target_signal_from_host (signo)) == 0 && |
| signal_pass_state (target_signal_from_host (signo)) == 1) |
| { |
| prdelset (&sctl->sigset, signo); |
| } |
| else |
| { |
| praddset (&sctl->sigset, signo); |
| } |
| } |
| #ifdef PROCFS_USE_READ_WRITE |
| sctl->cmd = PCSTRACE; |
| if (write (pi->ctl_fd, (char *) sctl, sizeof (struct sig_ctl)) < 0) |
| #else |
| if (ioctl (pi->ctl_fd, PIOCSTRACE, &sctl->sigset)) |
| #endif |
| { |
| print_sys_errmsg ("PIOCSTRACE failed", errno); |
| } |
| } |
| |
| /* |
| |
| LOCAL FUNCTION |
| |
| proc_set_exec_trap -- arrange for exec'd child to halt at startup |
| |
| SYNOPSIS |
| |
| void proc_set_exec_trap (void) |
| |
| DESCRIPTION |
| |
| This function is called in the child process when starting up |
| an inferior, prior to doing the exec of the actual inferior. |
| It sets the child process's exitset to make exit from the exec |
| system call an event of interest to stop on, and then simply |
| returns. The child does the exec, the system call returns, and |
| the child stops at the first instruction, ready for the gdb |
| parent process to take control of it. |
| |
| NOTE |
| |
| We need to use all local variables since the child may be sharing |
| it's data space with the parent, if vfork was used rather than |
| fork. |
| |
| Also note that we want to turn off the inherit-on-fork flag in |
| the child process so that any grand-children start with all |
| tracing flags cleared. |
| */ |
| |
| static void |
| proc_set_exec_trap () |
| { |
| struct sys_ctl exitset; |
| struct sys_ctl entryset; |
| char procname[MAX_PROC_NAME_SIZE]; |
| int fd; |
| |
| sprintf (procname, CTL_PROC_NAME_FMT, getpid ()); |
| #ifdef UNIXWARE |
| if ((fd = open (procname, O_WRONLY)) < 0) |
| #else |
| if ((fd = open (procname, O_RDWR)) < 0) |
| #endif |
| { |
| perror (procname); |
| gdb_flush (gdb_stderr); |
| _exit (127); |
| } |
| premptyset (&exitset.sysset); |
| premptyset (&entryset.sysset); |
| |
| #ifdef PRFS_STOPEXEC |
| /* Under Alpha OSF/1 we have to use a PIOCSSPCACT ioctl to trace |
| exits from exec system calls because of the user level loader. */ |
| { |
| int prfs_flags; |
| |
| if (ioctl (fd, PIOCGSPCACT, &prfs_flags) < 0) |
| { |
| perror (procname); |
| gdb_flush (gdb_stderr); |
| _exit (127); |
| } |
| prfs_flags |= PRFS_STOPEXEC; |
| if (ioctl (fd, PIOCSSPCACT, &prfs_flags) < 0) |
| { |
| perror (procname); |
| gdb_flush (gdb_stderr); |
| _exit (127); |
| } |
| } |
| #else /* PRFS_STOPEXEC */ |
| /* GW: Rationale... |
| Not all systems with /proc have all the exec* syscalls with the same |
| names. On the SGI, for example, there is no SYS_exec, but there |
| *is* a SYS_execv. So, we try to account for that. */ |
| |
| #ifdef SYS_exec |
| praddset (&exitset.sysset, SYS_exec); |
| #endif |
| #ifdef SYS_execve |
| praddset (&exitset.sysset, SYS_execve); |
| #endif |
| #ifdef SYS_execv |
| praddset (&exitset.sysset, SYS_execv); |
| #endif |
| |
| #ifdef PROCFS_USE_READ_WRITE |
| exitset.cmd = PCSEXIT; |
| if (write (fd, (char *) &exitset, sizeof (struct sys_ctl)) < 0) |
| #else |
| if (ioctl (fd, PIOCSEXIT, &exitset.sysset) < 0) |
| #endif |
| { |
| perror (procname); |
| gdb_flush (gdb_stderr); |
| _exit (127); |
| } |
| #endif /* PRFS_STOPEXEC */ |
| |
| praddset (&entryset.sysset, SYS_exit); |
| |
| #ifdef PROCFS_USE_READ_WRITE |
| entryset.cmd = PCSENTRY; |
| if (write (fd, (char *) &entryset, sizeof (struct sys_ctl)) < 0) |
| #else |
| if (ioctl (fd, PIOCSENTRY, &entryset.sysset) < 0) |
| #endif |
| { |
| perror (procname); |
| gdb_flush (gdb_stderr); |
| _exit (126); |
| } |
| |
| /* Turn off inherit-on-fork flag so that all grand-children of gdb |
| start with tracing flags cleared. */ |
| |
| modify_inherit_on_fork_flag (fd, 0); |
| |
| /* Turn on run-on-last-close flag so that this process will not hang |
| if GDB goes away for some reason. */ |
| |
| modify_run_on_last_close_flag (fd, 1); |
| |
| #ifndef UNIXWARE /* since this is a solaris-ism, we don't want it */ |
| /* NOTE: revisit when doing thread support for UW */ |
| #ifdef PR_ASYNC |
| { |
| long pr_flags; |
| #ifdef PROCFS_USE_READ_WRITE |
| struct proc_ctl pctl; |
| #endif |
| |
| /* Solaris needs this to make procfs treat all threads seperately. Without |
| this, all threads halt whenever something happens to any thread. Since |
| GDB wants to control all this itself, it needs to set PR_ASYNC. */ |
| |
| pr_flags = PR_ASYNC; |
| #ifdef PROCFS_USE_READ_WRITE |
| pctl.cmd = PCSET; |
| pctl.data = PR_FORK | PR_ASYNC; |
| write (fd, (char *) &pctl, sizeof (struct proc_ctl)); |
| #else |
| ioctl (fd, PIOCSET, &pr_flags); |
| #endif |
| } |
| #endif /* PR_ASYNC */ |
| #endif /* !UNIXWARE */ |
| } |
| |
| /* |
| |
| GLOBAL FUNCTION |
| |
| proc_iterate_over_mappings -- call function for every mapped space |
| |
| SYNOPSIS |
| |
| int proc_iterate_over_mappings (int (*func)()) |
| |
| DESCRIPTION |
| |
| Given a pointer to a function, call that function for every |
| mapped address space, passing it an open file descriptor for |
| the file corresponding to that mapped address space (if any) |
| and the base address of the mapped space. Quit when we hit |
| the end of the mappings or the function returns nonzero. |
| */ |
| |
| #ifdef UNIXWARE |
| int |
| proc_iterate_over_mappings (func) |
| int (*func) PARAMS ((int, CORE_ADDR)); |
| { |
| int nmap; |
| int fd; |
| int funcstat = 0; |
| prmap_t *prmaps; |
| prmap_t *prmap; |
| struct procinfo *pi; |
| struct stat sbuf; |
| |
| pi = current_procinfo; |
| |
| if (fstat (pi->map_fd, &sbuf) < 0) |
| return 0; |
| |
| nmap = sbuf.st_size / sizeof (prmap_t); |
| prmaps = (prmap_t *) alloca (nmap * sizeof (prmap_t)); |
| if ((lseek (pi->map_fd, 0, SEEK_SET) == 0) && |
| (read (pi->map_fd, (char *) prmaps, nmap * sizeof (prmap_t)) == |
| (nmap * sizeof (prmap_t)))) |
| { |
| int i = 0; |
| for (prmap = prmaps; i < nmap && funcstat == 0; ++prmap, ++i) |
| { |
| char name[sizeof ("/proc/1234567890/object") + |
| sizeof (prmap->pr_mapname)]; |
| sprintf (name, "/proc/%d/object/%s", pi->pid, prmap->pr_mapname); |
| if ((fd = open (name, O_RDONLY)) == -1) |
| { |
| funcstat = 1; |
| break; |
| } |
| funcstat = (*func) (fd, (CORE_ADDR) prmap->pr_vaddr); |
| close (fd); |
| } |
| } |
| return (funcstat); |
| } |
| #else /* UNIXWARE */ |
| int |
| proc_iterate_over_mappings (func) |
| int (*func) PARAMS ((int, CORE_ADDR)); |
| { |
| int nmap; |
| int fd; |
| int funcstat = 0; |
| struct prmap *prmaps; |
| struct prmap *prmap; |
| struct procinfo *pi; |
| |
| pi = current_procinfo; |
| |
| if (ioctl (pi->map_fd, PIOCNMAP, &nmap) == 0) |
| { |
| prmaps = (struct prmap *) alloca ((nmap + 1) * sizeof (*prmaps)); |
| if (ioctl (pi->map_fd, PIOCMAP, prmaps) == 0) |
| { |
| for (prmap = prmaps; prmap->pr_size && funcstat == 0; ++prmap) |
| { |
| fd = proc_address_to_fd (pi, (CORE_ADDR) prmap->pr_vaddr, 0); |
| funcstat = (*func) (fd, (CORE_ADDR) prmap->pr_vaddr); |
| close (fd); |
| } |
| } |
| } |
| return (funcstat); |
| } |
| #endif /* UNIXWARE */ |
| |
| #if 0 /* Currently unused */ |
| /* |
| |
| GLOBAL FUNCTION |
| |
| proc_base_address -- find base address for segment containing address |
| |
| SYNOPSIS |
| |
| CORE_ADDR proc_base_address (CORE_ADDR addr) |
| |
| DESCRIPTION |
| |
| Given an address of a location in the inferior, find and return |
| the base address of the mapped segment containing that address. |
| |
| This is used for example, by the shared library support code, |
| where we have the pc value for some location in the shared library |
| where we are stopped, and need to know the base address of the |
| segment containing that address. |
| */ |
| |
| CORE_ADDR |
| proc_base_address (addr) |
| CORE_ADDR addr; |
| { |
| int nmap; |
| struct prmap *prmaps; |
| struct prmap *prmap; |
| CORE_ADDR baseaddr = 0; |
| struct procinfo *pi; |
| |
| pi = current_procinfo; |
| |
| if (ioctl (pi->map_fd, PIOCNMAP, &nmap) == 0) |
| { |
| prmaps = (struct prmap *) alloca ((nmap + 1) * sizeof (*prmaps)); |
| if (ioctl (pi->map_fd, PIOCMAP, prmaps) == 0) |
| { |
| for (prmap = prmaps; prmap->pr_size; ++prmap) |
| { |
| if ((prmap->pr_vaddr <= (caddr_t) addr) && |
| (prmap->pr_vaddr + prmap->pr_size > (caddr_t) addr)) |
| { |
| baseaddr = (CORE_ADDR) prmap->pr_vaddr; |
| break; |
| } |
| } |
| } |
| } |
| return (baseaddr); |
| } |
| |
| #endif /* 0 */ |
| |
| #ifndef UNIXWARE |
| /* |
| |
| LOCAL FUNCTION |
| |
| proc_address_to_fd -- return open fd for file mapped to address |
| |
| SYNOPSIS |
| |
| int proc_address_to_fd (struct procinfo *pi, CORE_ADDR addr, complain) |
| |
| DESCRIPTION |
| |
| Given an address in the current inferior's address space, use the |
| /proc interface to find an open file descriptor for the file that |
| this address was mapped in from. Return -1 if there is no current |
| inferior. Print a warning message if there is an inferior but |
| the address corresponds to no file (IE a bogus address). |
| |
| */ |
| |
| static int |
| proc_address_to_fd (pi, addr, complain) |
| struct procinfo *pi; |
| CORE_ADDR addr; |
| int complain; |
| { |
| int fd = -1; |
| |
| if ((fd = ioctl (pi->ctl_fd, PIOCOPENM, (caddr_t *) & addr)) < 0) |
| { |
| if (complain) |
| { |
| print_sys_errmsg (pi->pathname, errno); |
| warning ("can't find mapped file for address 0x%x", addr); |
| } |
| } |
| return (fd); |
| } |
| #endif /* !UNIXWARE */ |
| |
| /* Attach to process PID, then initialize for debugging it |
| and wait for the trace-trap that results from attaching. */ |
| |
| static void |
| procfs_attach (args, from_tty) |
| char *args; |
| int from_tty; |
| { |
| char *exec_file; |
| int pid; |
| |
| if (!args) |
| error_no_arg ("process-id to attach"); |
| |
| pid = atoi (args); |
| |
| if (pid == getpid ()) /* Trying to masturbate? */ |
| error ("I refuse to debug myself!"); |
| |
| if (from_tty) |
| { |
| exec_file = (char *) get_exec_file (0); |
| |
| 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)); |
| |
| gdb_flush (gdb_stdout); |
| } |
| |
| inferior_pid = pid = do_attach (pid); |
| push_target (&procfs_ops); |
| } |
| |
| |
| /* Take a program previously attached to and detaches it. |
| The program resumes execution and will no longer stop |
| on signals, etc. We'd 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 |
| procfs_detach (args, from_tty) |
| char *args; |
| int from_tty; |
| { |
| int siggnal = 0; |
| |
| if (from_tty) |
| { |
| char *exec_file = get_exec_file (0); |
| if (exec_file == 0) |
| exec_file = ""; |
| printf_unfiltered ("Detaching from program: %s %s\n", |
| exec_file, target_pid_to_str (inferior_pid)); |
| gdb_flush (gdb_stdout); |
| } |
| if (args) |
| siggnal = atoi (args); |
| |
| do_detach (siggnal); |
| inferior_pid = 0; |
| unpush_target (&procfs_ops); /* Pop out of handling an inferior */ |
| } |
| |
| /* Get ready to modify the registers array. On machines which store |
| individual registers, this doesn't need to do anything. On machines |
| which store all the registers in one fell swoop, this makes sure |
| that registers contains all the registers from the program being |
| debugged. */ |
| |
| static void |
| procfs_prepare_to_store () |
| { |
| #ifdef CHILD_PREPARE_TO_STORE |
| CHILD_PREPARE_TO_STORE (); |
| #endif |
| } |
| |
| /* Print status information about what we're accessing. */ |
| |
| static void |
| procfs_files_info (ignore) |
| struct target_ops *ignore; |
| { |
| printf_unfiltered ("\tUsing the running image of %s %s via /proc.\n", |
| attach_flag ? "attached" : "child", target_pid_to_str (inferior_pid)); |
| } |
| |
| /* ARGSUSED */ |
| static void |
| procfs_open (arg, from_tty) |
| char *arg; |
| int from_tty; |
| { |
| error ("Use the \"run\" command to start a Unix child process."); |
| } |
| |
| /* |
| |
| LOCAL FUNCTION |
| |
| do_attach -- attach to an already existing process |
| |
| SYNOPSIS |
| |
| int do_attach (int pid) |
| |
| DESCRIPTION |
| |
| Attach to an already existing process with the specified process |
| id. If the process is not already stopped, query whether to |
| stop it or not. |
| |
| NOTES |
| |
| The option of stopping at attach time is specific to the /proc |
| versions of gdb. Versions using ptrace force the attachee |
| to stop. (I have changed this version to do so, too. All you |
| have to do is "continue" to make it go on. -- gnu@cygnus.com) |
| |
| */ |
| |
| static int |
| do_attach (pid) |
| int pid; |
| { |
| struct procinfo *pi; |
| #ifdef PROCFS_USE_READ_WRITE |
| struct flt_ctl fctl; |
| #endif |
| int nlwp, *lwps; |
| |
| pi = init_procinfo (pid, 0); |
| |
| #ifdef PIOCLWPIDS |
| nlwp = pi->prstatus.pr_nlwp; |
| lwps = alloca ((2 * nlwp + 2) * sizeof (id_t)); |
| |
| if (ioctl (pi->ctl_fd, PIOCLWPIDS, lwps)) |
| { |
| print_sys_errmsg (pi->pathname, errno); |
| error ("PIOCLWPIDS failed"); |
| } |
| #else /* PIOCLWPIDS */ |
| nlwp = 1; |
| lwps = alloca ((2 * nlwp + 2) * sizeof *lwps); |
| lwps[0] = 0; |
| #endif |
| for (; nlwp > 0; nlwp--, lwps++) |
| { |
| /* First one has already been created above. */ |
| if ((pi = find_procinfo ((*lwps << 16) | pid, 1)) == 0) |
| pi = init_procinfo ((*lwps << 16) | pid, 0); |
| |
| if (THE_PR_LWP (pi->prstatus).pr_flags & (PR_STOPPED | PR_ISTOP)) |
| { |
| pi->was_stopped = 1; |
| } |
| else |
| { |
| pi->was_stopped = 0; |
| if (1 || query ("Process is currently running, stop it? ")) |
| { |
| #ifdef PROCFS_USE_READ_WRITE |
| long cmd; |
| #endif |
| /* Make it run again when we close it. */ |
| modify_run_on_last_close_flag (pi->ctl_fd, 1); |
| #ifdef PROCFS_USE_READ_WRITE |
| cmd = PCSTOP; |
| if (write (pi->ctl_fd, (char *) &cmd, sizeof (long)) < 0) |
| #else |
| if (ioctl (pi->ctl_fd, PIOCSTOP, &pi->prstatus) < 0) |
| #endif |
| { |
| print_sys_errmsg (pi->pathname, errno); |
| close_proc_file (pi); |
| error ("PIOCSTOP failed"); |
| } |
| #ifdef UNIXWARE |
| if (!procfs_read_status (pi)) |
| { |
| print_sys_errmsg (pi->pathname, errno); |
| close_proc_file (pi); |
| error ("procfs_read_status failed"); |
| } |
| #endif |
| pi->nopass_next_sigstop = 1; |
| } |
| else |
| { |
| printf_unfiltered ("Ok, gdb will wait for %s to stop.\n", |
| target_pid_to_str (pi->pid)); |
| } |
| } |
| |
| #ifdef PROCFS_USE_READ_WRITE |
| fctl.cmd = PCSFAULT; |
| prfillset (&fctl.fltset); |
| prdelset (&fctl.fltset, FLTPAGE); |
| |
| if (write (pi->ctl_fd, (char *) &fctl, sizeof (struct flt_ctl)) < 0) |
| print_sys_errmsg ("PCSFAULT failed", errno); |
| #else /* PROCFS_USE_READ_WRITE */ |
| prfillset (&pi->prrun.pr_fault); |
| prdelset (&pi->prrun.pr_fault, FLTPAGE); |
| #ifdef PROCFS_DONT_TRACE_FAULTS |
| premptyset (&pi->prrun.pr_fault); |
| #endif |
| if (ioctl (pi->ctl_fd, PIOCSFAULT, &pi->prrun.pr_fault)) |
| { |
| print_sys_errmsg ("PIOCSFAULT failed", errno); |
| } |
| if (ioctl (pi->ctl_fd, PIOCSTRACE, &pi->prrun.pr_trace)) |
| { |
| print_sys_errmsg ("PIOCSTRACE failed", errno); |
| } |
| add_thread (pi->pid); |
| procfs_set_inferior_syscall_traps (pi); |
| #endif /* PROCFS_USE_READ_WRITE */ |
| } |
| attach_flag = 1; |
| return (pi->pid); |
| } |
| |
| /* |
| |
| LOCAL FUNCTION |
| |
| do_detach -- detach from an attached-to process |
| |
| SYNOPSIS |
| |
| void do_detach (int signal) |
| |
| DESCRIPTION |
| |
| Detach from the current attachee. |
| |
| If signal is non-zero, the attachee is started running again and sent |
| the specified signal. |
| |
| If signal is zero and the attachee was not already stopped when we |
| attached to it, then we make it runnable again when we detach. |
| |
| Otherwise, we query whether or not to make the attachee runnable |
| again, since we may simply want to leave it in the state it was in |
| when we attached. |
| |
| We report any problems, but do not consider them errors, since we |
| MUST detach even if some things don't seem to go right. This may not |
| be the ideal situation. (FIXME). |
| */ |
| |
| static void |
| do_detach (signal) |
| int signal; |
| { |
| struct procinfo *pi; |
| |
| for (pi = procinfo_list; pi; pi = pi->next) |
| { |
| if (signal) |
| { |
| set_proc_siginfo (pi, signal); |
| } |
| #ifdef PROCFS_USE_READ_WRITE |
| pi->saved_exitset.cmd = PCSEXIT; |
| if (write (pi->ctl_fd, (char *) &pi->saved_exitset, |
| sizeof (struct sys_ctl)) < 0) |
| #else |
| if (ioctl (pi->ctl_fd, PIOCSEXIT, &pi->saved_exitset.sysset) < 0) |
| #endif |
| { |
| print_sys_errmsg (pi->pathname, errno); |
| printf_unfiltered ("PIOCSEXIT failed.\n"); |
| } |
| #ifdef PROCFS_USE_READ_WRITE |
| pi->saved_entryset.cmd = PCSENTRY; |
| if (write (pi->ctl_fd, (char *) &pi->saved_entryset, |
| sizeof (struct sys_ctl)) < 0) |
| #else |
| if (ioctl (pi->ctl_fd, PIOCSENTRY, &pi->saved_entryset.sysset) < 0) |
| #endif |
| { |
| print_sys_errmsg (pi->pathname, errno); |
| printf_unfiltered ("PIOCSENTRY failed.\n"); |
| } |
| #ifdef PROCFS_USE_READ_WRITE |
| pi->saved_trace.cmd = PCSTRACE; |
| if (write (pi->ctl_fd, (char *) &pi->saved_trace, |
| sizeof (struct sig_ctl)) < 0) |
| #else |
| if (ioctl (pi->ctl_fd, PIOCSTRACE, &pi->saved_trace.sigset) < 0) |
| #endif |
| { |
| print_sys_errmsg (pi->pathname, errno); |
| printf_unfiltered ("PIOCSTRACE failed.\n"); |
| } |
| #ifndef UNIXWARE |
| if (ioctl (pi->ctl_fd, PIOCSHOLD, &pi->saved_sighold.sigset) < 0) |
| { |
| print_sys_errmsg (pi->pathname, errno); |
| printf_unfiltered ("PIOSCHOLD failed.\n"); |
| } |
| #endif |
| #ifdef PROCFS_USE_READ_WRITE |
| pi->saved_fltset.cmd = PCSFAULT; |
| if (write (pi->ctl_fd, (char *) &pi->saved_fltset, |
| sizeof (struct flt_ctl)) < 0) |
| #else |
| if (ioctl (pi->ctl_fd, PIOCSFAULT, &pi->saved_fltset.fltset) < 0) |
| #endif |
| { |
| print_sys_errmsg (pi->pathname, errno); |
| printf_unfiltered ("PIOCSFAULT failed.\n"); |
| } |
| if (!procfs_read_status (pi)) |
| { |
| print_sys_errmsg (pi->pathname, errno); |
| printf_unfiltered ("procfs_read_status failed.\n"); |
| } |
| else |
| { |
| if (signal |
| || (THE_PR_LWP (pi->prstatus).pr_flags & (PR_STOPPED | PR_ISTOP))) |
| { |
| #ifdef PROCFS_USE_READ_WRITE |
| long cmd; |
| #endif |
| |
| if (signal || !pi->was_stopped || |
| query ("Was stopped when attached, make it runnable again? ")) |
| { |
| /* Clear any pending signal if we want to detach without |
| a signal. */ |
| if (signal == 0) |
| set_proc_siginfo (pi, signal); |
| |
| /* Clear any fault that might have stopped it. */ |
| #ifdef PROCFS_USE_READ_WRITE |
| cmd = PCCFAULT; |
| if (write (pi->ctl_fd, (char *) &cmd, sizeof (long)) < 0) |
| #else |
| if (ioctl (pi->ctl_fd, PIOCCFAULT, 0)) |
| #endif |
| { |
| print_sys_errmsg (pi->pathname, errno); |
| printf_unfiltered ("PIOCCFAULT failed.\n"); |
| } |
| |
| /* Make it run again when we close it. */ |
| |
| modify_run_on_last_close_flag (pi->ctl_fd, 1); |
| } |
| } |
| } |
| close_proc_file (pi); |
| } |
| attach_flag = 0; |
| } |
| |
| /* emulate wait() as much as possible. |
| Wait for child to do something. Return pid of child, or -1 in case |
| of error; store status in *OURSTATUS. |
| |
| Not sure why we can't |
| just use wait(), but it seems to have problems when applied to a |
| process being controlled with the /proc interface. |
| |
| We have a race problem here with no obvious solution. We need to let |
| the inferior run until it stops on an event of interest, which means |
| that we need to use the PIOCWSTOP ioctl. However, we cannot use this |
| ioctl if the process is already stopped on something that is not an |
| event of interest, or the call will hang indefinitely. Thus we first |
| use PIOCSTATUS to see if the process is not stopped. If not, then we |
| use PIOCWSTOP. But during the window between the two, if the process |
| stops for any reason that is not an event of interest (such as a job |
| control signal) then gdb will hang. One possible workaround is to set |
| an alarm to wake up every minute of so and check to see if the process |
| is still running, and if so, then reissue the PIOCWSTOP. But this is |
| a real kludge, so has not been implemented. FIXME: investigate |
| alternatives. |
| |
| FIXME: Investigate why wait() seems to have problems with programs |
| being control by /proc routines. */ |
| static int |
| procfs_wait (pid, ourstatus) |
| int pid; |
| struct target_waitstatus *ourstatus; |
| { |
| short what; |
| short why; |
| int statval = 0; |
| int checkerr = 0; |
| int rtnval = -1; |
| struct procinfo *pi; |
| |
| scan_again: |
| |
| /* handle all syscall events first, otherwise we might not |
| notice a thread was created until too late. */ |
| |
| for (pi = procinfo_list; pi; pi = pi->next) |
| { |
| if (!pi->had_event) |
| continue; |
| |
| if (!(THE_PR_LWP (pi->prstatus).pr_flags & (PR_STOPPED | PR_ISTOP))) |
| continue; |
| |
| why = THE_PR_LWP (pi->prstatus).pr_why; |
| what = THE_PR_LWP (pi->prstatus).pr_what; |
| if (why == PR_SYSENTRY || why == PR_SYSEXIT) |
| { |
| int i; |
| int found_handler = 0; |
| |
| for (i = 0; i < pi->num_syscall_handlers; i++) |
| if (pi->syscall_handlers[i].syscall_num == what) |
| { |
| found_handler = 1; |
| pi->saved_rtnval = pi->pid; |
| pi->saved_statval = 0; |
| if (!pi->syscall_handlers[i].func |
| (pi, what, why, &pi->saved_rtnval, &pi->saved_statval)) |
| pi->had_event = 0; |
| break; |
| } |
| |
| if (!found_handler) |
| { |
| if (why == PR_SYSENTRY) |
| error ("PR_SYSENTRY, unhandled system call %d", what); |
| else |
| error ("PR_SYSEXIT, unhandled system call %d", what); |
| } |
| } |
| } |
| |
| /* find a relevant process with an event */ |
| |
| for (pi = procinfo_list; pi; pi = pi->next) |
| if (pi->had_event && (pid == -1 || pi->pid == pid)) |
| break; |
| |
| if (!pi) |
| { |
| wait_fd (); |
| goto scan_again; |
| } |
| |
| if (!checkerr |
| && !(THE_PR_LWP (pi->prstatus).pr_flags & (PR_STOPPED | PR_ISTOP))) |
| { |
| if (!procfs_write_pcwstop (pi)) |
| { |
| checkerr++; |
| } |
| } |
| if (checkerr) |
| { |
| if (errno == ENOENT) |
| { |
| /* XXX Fixme -- what to do if attached? Can't call wait... */ |
| rtnval = wait (&statval); |
| if ((rtnval) != (PIDGET (inferior_pid))) |
| { |
| print_sys_errmsg (pi->pathname, errno); |
| error ("procfs_wait: wait failed, returned %d", rtnval); |
| /* NOTREACHED */ |
| } |
| } |
| else |
| { |
| print_sys_errmsg (pi->pathname, errno); |
| error ("PIOCSTATUS or PIOCWSTOP failed."); |
| /* NOTREACHED */ |
| } |
| } |
| else if (THE_PR_LWP (pi->prstatus).pr_flags & (PR_STOPPED | PR_ISTOP)) |
| { |
| #ifdef UNIXWARE |
| rtnval = pi->prstatus.pr_pid; |
| #else |
| rtnval = pi->pid; |
| #endif |
| why = THE_PR_LWP (pi->prstatus).pr_why; |
| what = THE_PR_LWP (pi->prstatus).pr_what; |
| |
| switch (why) |
| { |
| case PR_SIGNALLED: |
| statval = (what << 8) | 0177; |
| break; |
| case PR_SYSENTRY: |
| case PR_SYSEXIT: |
| rtnval = pi->saved_rtnval; |
| statval = pi->saved_statval; |
| break; |
| case PR_REQUESTED: |
| statval = (SIGSTOP << 8) | 0177; |
| break; |
| case PR_JOBCONTROL: |
| statval = (what << 8) | 0177; |
| break; |
| case PR_FAULTED: |
| switch (what) |
| { |
| #ifdef FLTWATCH |
| case FLTWATCH: |
| statval = (SIGTRAP << 8) | 0177; |
| break; |
| #endif |
| #ifdef FLTKWATCH |
| case FLTKWATCH: |
| statval = (SIGTRAP << 8) | 0177; |
| break; |
| #endif |
| #ifndef FAULTED_USE_SIGINFO |
| /* Irix, contrary to the documentation, fills in 0 for si_signo. |
| Solaris fills in si_signo. I'm not sure about others. */ |
| case FLTPRIV: |
| case FLTILL: |
| statval = (SIGILL << 8) | 0177; |
| break; |
| case FLTBPT: |
| case FLTTRACE: |
| statval = (SIGTRAP << 8) | 0177; |
| break; |
| case FLTSTACK: |
| case FLTACCESS: |
| case FLTBOUNDS: |
| statval = (SIGSEGV << 8) | 0177; |
| break; |
| case FLTIOVF: |
| case FLTIZDIV: |
| case FLTFPE: |
| statval = (SIGFPE << 8) | 0177; |
| break; |
| case FLTPAGE: /* Recoverable page fault */ |
| #endif /* not FAULTED_USE_SIGINFO */ |
| default: |
| /* Use the signal which the kernel assigns. This is better than |
| trying to second-guess it from the fault. In fact, I suspect |
| that FLTACCESS can be either SIGSEGV or SIGBUS. */ |
| statval = |
| ((THE_PR_LWP (pi->prstatus).pr_info.si_signo) << 8) | 0177; |
| break; |
| } |
| break; |
| default: |
| error ("PIOCWSTOP, unknown why %d, what %d", why, what); |
| } |
| /* Stop all the other threads when any of them stops. */ |
| |
| { |
| struct procinfo *procinfo, *next_pi; |
| |
| for (procinfo = procinfo_list; procinfo; procinfo = next_pi) |
| { |
| next_pi = procinfo->next; |
| if (!procinfo->had_event) |
| { |
| #ifdef PROCFS_USE_READ_WRITE |
| long cmd = PCSTOP; |
| if (write (pi->ctl_fd, (char *) &cmd, sizeof (long)) < 0) |
| { |
| print_sys_errmsg (procinfo->pathname, errno); |
| error ("PCSTOP failed"); |
| } |
| #else |
| /* A bug in Solaris (2.5) causes us to hang when trying to |
| stop a stopped process. So, we have to check first in |
| order to avoid the hang. */ |
| if (!procfs_read_status (procinfo)) |
| { |
| /* The LWP has apparently terminated. */ |
| if (info_verbose) |
| printf_filtered ("LWP %d doesn't respond.\n", |
| (procinfo->pid >> 16) & 0xffff); |
| close_proc_file (procinfo); |
| continue; |
| } |
| |
| if (!(procinfo->prstatus.pr_flags & PR_STOPPED)) |
| if (ioctl (procinfo->ctl_fd, PIOCSTOP, &procinfo->prstatus) |
| < 0) |
| { |
| print_sys_errmsg (procinfo->pathname, errno); |
| warning ("PIOCSTOP failed"); |
| } |
| #endif |
| } |
| } |
| } |
| } |
| else |
| { |
| error ("PIOCWSTOP, stopped for unknown/unhandled reason, flags %#x", |
| THE_PR_LWP (pi->prstatus).pr_flags); |
| } |
| |
| store_waitstatus (ourstatus, statval); |
| |
| if (rtnval == -1) /* No more children to wait for */ |
| { |
| warning ("Child process unexpectedly missing"); |
| /* Claim it exited with unknown signal. */ |
| ourstatus->kind = TARGET_WAITKIND_SIGNALLED; |
| ourstatus->value.sig = TARGET_SIGNAL_UNKNOWN; |
| return rtnval; |
| } |
| |
| pi->had_event = 0; /* Indicate that we've seen this one */ |
| return (rtnval); |
| } |
| |
| /* |
| |
| LOCAL FUNCTION |
| |
| set_proc_siginfo - set a process's current signal info |
| |
| SYNOPSIS |
| |
| void set_proc_siginfo (struct procinfo *pip, int signo); |
| |
| DESCRIPTION |
| |
| Given a pointer to a process info struct in PIP and a signal number |
| in SIGNO, set the process's current signal and its associated signal |
| information. The signal will be delivered to the process immediately |
| after execution is resumed, even if it is being held. In addition, |
| this particular delivery will not cause another PR_SIGNALLED stop |
| even if the signal is being traced. |
| |
| If we are not delivering the same signal that the prstatus siginfo |
| struct contains information about, then synthesize a siginfo struct |
| to match the signal we are going to deliver, make it of the type |
| "generated by a user process", and send this synthesized copy. When |
| used to set the inferior's signal state, this will be required if we |
| are not currently stopped because of a traced signal, or if we decide |
| to continue with a different signal. |
| |
| Note that when continuing the inferior from a stop due to receipt |
| of a traced signal, we either have set PRCSIG to clear the existing |
| signal, or we have to call this function to do a PIOCSSIG with either |
| the existing siginfo struct from pr_info, or one we have synthesized |
| appropriately for the signal we want to deliver. Otherwise if the |
| signal is still being traced, the inferior will immediately stop |
| again. |
| |
| See siginfo(5) for more details. |
| */ |
| |
| static void |
| set_proc_siginfo (pip, signo) |
| struct procinfo *pip; |
| int signo; |
| { |
| struct siginfo newsiginfo; |
| struct siginfo *sip; |
| #if defined (UNIXWARE) || defined (PROCFS_USE_READ_WRITE) |
| struct sigi_ctl sictl; |
| #endif |
| |
| #ifdef PROCFS_DONT_PIOCSSIG_CURSIG |
| /* With Alpha OSF/1 procfs, the kernel gets really confused if it |
| receives a PIOCSSIG with a signal identical to the current signal, |
| it messes up the current signal. Work around the kernel bug. */ |
| if (signo == THE_PR_LWP (pip->prstatus).pr_cursig) |
| return; |
| #endif |
| |
| #ifdef UNIXWARE |
| if (signo == THE_PR_LWP (pip->prstatus).pr_info.si_signo) |
| { |
| memcpy ((char *) &sictl.siginfo, (char *) &pip->prstatus.pr_lwp.pr_info, |
| sizeof (siginfo_t)); |
| } |
| #else |
| if (signo == THE_PR_LWP (pip->prstatus).pr_info.si_signo) |
| { |
| sip = &pip->prstatus.pr_info; |
| } |
| #endif |
| else |
| { |
| #ifdef UNIXWARE |
| siginfo_t *sip = &sictl.siginfo; |
| memset ((char *) sip, 0, sizeof (siginfo_t)); |
| #else |
| memset ((char *) &newsiginfo, 0, sizeof (newsiginfo)); |
| sip = &newsiginfo; |
| #endif |
| sip->si_signo = signo; |
| sip->si_code = 0; |
| sip->si_errno = 0; |
| sip->si_pid = getpid (); |
| sip->si_uid = getuid (); |
| } |
| #ifdef PROCFS_USE_READ_WRITE |
| sictl.cmd = PCSSIG; |
| if (write (pip->ctl_fd, (char *) &sictl, sizeof (struct sigi_ctl)) < 0) |
| #else |
| if (ioctl (pip->ctl_fd, PIOCSSIG, sip) < 0) |
| #endif |
| { |
| print_sys_errmsg (pip->pathname, errno); |
| warning ("PIOCSSIG failed"); |
| } |
| } |
| |
| /* Resume execution of process PID. If STEP is nozero, then |
| just single step it. If SIGNAL is nonzero, restart it with that |
| signal activated. */ |
| |
| static void |
| procfs_resume (pid, step, signo) |
| int pid; |
| int step; |
| enum target_signal signo; |
| { |
| int signal_to_pass; |
| struct procinfo *pi, *procinfo, *next_pi; |
| #if defined (UNIXWARE) || defined (PROCFS_USE_READ_WRITE) |
| struct proc_ctl pctl; |
| #endif |
| |
| pi = find_procinfo (pid == -1 ? inferior_pid : pid, 0); |
| |
| errno = 0; |
| #ifdef UNIXWARE |
| pctl.cmd = PCRUN; |
| pctl.data = PRCFAULT; |
| #else |
| pi->prrun.pr_flags = PRSTRACE | PRSFAULT | PRCFAULT; |
| #endif |
| |
| #if 0 |
| /* It should not be necessary. If the user explicitly changes the value, |
| value_assign calls write_register_bytes, which writes it. */ |
| /* It may not be absolutely necessary to specify the PC value for |
| restarting, but to be safe we use the value that gdb considers |
| to be current. One case where this might be necessary is if the |
| user explicitly changes the PC value that gdb considers to be |
| current. FIXME: Investigate if this is necessary or not. */ |
| |
| #ifdef PRSVADDR_BROKEN |
| /* Can't do this under Solaris running on a Sparc, as there seems to be no |
| place to put nPC. In fact, if you use this, nPC seems to be set to some |
| random garbage. We have to rely on the fact that PC and nPC have been |
| written previously via PIOCSREG during a register flush. */ |
| |
| pi->prrun.pr_vaddr = (caddr_t) * (int *) ®isters[REGISTER_BYTE (PC_REGNUM)]; |
| pi->prrun.pr_flags != PRSVADDR; |
| #endif |
| #endif |
| |
| if (signo == TARGET_SIGNAL_STOP && pi->nopass_next_sigstop) |
| /* When attaching to a child process, if we forced it to stop with |
| a PIOCSTOP, then we will have set the nopass_next_sigstop flag. |
| Upon resuming the first time after such a stop, we explicitly |
| inhibit sending it another SIGSTOP, which would be the normal |
| result of default signal handling. One potential drawback to |
| this is that we will also ignore any attempt to by the user |
| to explicitly continue after the attach with a SIGSTOP. Ultimately |
| this problem should be dealt with by making the routines that |
| deal with the inferior a little smarter, and possibly even allow |
| an inferior to continue running at the same time as gdb. (FIXME?) */ |
| signal_to_pass = 0; |
| else if (signo == TARGET_SIGNAL_TSTP |
| && THE_PR_LWP (pi->prstatus).pr_cursig == SIGTSTP |
| && THE_PR_LWP (pi->prstatus).pr_action.sa_handler == SIG_DFL |
| ) |
| |
| /* We are about to pass the inferior a SIGTSTP whose action is |
| SIG_DFL. The SIG_DFL action for a SIGTSTP is to stop |
| (notifying the parent via wait()), and then keep going from the |
| same place when the parent is ready for you to keep going. So |
| under the debugger, it should do nothing (as if the program had |
| been stopped and then later resumed. Under ptrace, this |
| happens for us, but under /proc, the system obligingly stops |
| the process, and wait_for_inferior would have no way of |
| distinguishing that type of stop (which indicates that we |
| should just start it again), with a stop due to the pr_trace |
| field of the prrun_t struct. |
| |
| Note that if the SIGTSTP is being caught, we *do* need to pass it, |
| because the handler needs to get executed. */ |
| signal_to_pass = 0; |
| else |
| signal_to_pass = target_signal_to_host (signo); |
| |
| if (signal_to_pass) |
| { |
| set_proc_siginfo (pi, signal_to_pass); |
| } |
| else |
| { |
| #ifdef UNIXWARE |
| pctl.data |= PRCSIG; |
| #else |
| pi->prrun.pr_flags |= PRCSIG; |
| #endif |
| } |
| pi->nopass_next_sigstop = 0; |
| if (step) |
| { |
| #ifdef UNIXWARE |
| pctl.data |= PRSTEP; |
| #else |
| pi->prrun.pr_flags |= PRSTEP; |
| #endif |
| } |
| pi->had_event = 0; |
| /* Don't try to start a process unless it's stopped on an |
| `event of interest'. Doing so will cause errors. */ |
| |
| if (!procfs_read_status (pi)) |
| { |
| /* The LWP has apparently terminated. */ |
| if (info_verbose) |
| printf_filtered ("LWP %d doesn't respond.\n", |
| (pi->pid >> 16) & 0xffff); |
| close_proc_file (pi); |
| } |
| else |
| { |
| #ifdef PROCFS_USE_READ_WRITE |
| if (write (pi->ctl_fd, (char *) &pctl, sizeof (struct proc_ctl)) < 0) |
| #else |
| if ((pi->prstatus.pr_flags & PR_ISTOP) |
| && ioctl (pi->ctl_fd, PIOCRUN, &pi->prrun) != 0) |
| #endif |
| { |
| /* The LWP has apparently terminated. */ |
| if (info_verbose) |
| printf_filtered ("LWP %d doesn't respond.\n", |
| (pi->pid >> 16) & 0xffff); |
| close_proc_file (pi); |
| } |
| } |
| |
| /* Continue all the other threads that haven't had an event of interest. |
| Also continue them if they have NOPASS_NEXT_SIGSTOP set; this is only |
| set by do_attach, and means this is the first resume after an attach. |
| All threads were CSTOP'd by do_attach, and should be resumed now. */ |
| |
| if (pid == -1) |
| for (procinfo = procinfo_list; procinfo; procinfo = next_pi) |
| { |
| next_pi = procinfo->next; |
| if (pi != procinfo) |
| if (!procinfo->had_event || |
| (procinfo->nopass_next_sigstop && signo == TARGET_SIGNAL_STOP)) |
| { |
| procinfo->had_event = procinfo->nopass_next_sigstop = 0; |
| #ifdef PROCFS_USE_READ_WRITE |
| pctl.data = PRCFAULT | PRCSIG; |
| if (write (procinfo->ctl_fd, (char *) &pctl, |
| sizeof (struct proc_ctl)) < 0) |
| { |
| if (!procfs_read_status (procinfo)) |
| fprintf_unfiltered (gdb_stderr, |
| "procfs_read_status failed, errno=%d\n", |
| errno); |
| print_sys_errmsg (procinfo->pathname, errno); |
| error ("PCRUN failed"); |
| } |
| #else |
| procinfo->prrun.pr_flags &= PRSTEP; |
| procinfo->prrun.pr_flags |= PRCFAULT | PRCSIG; |
| if (!procfs_read_status (procinfo)) |
| { |
| /* The LWP has apparently terminated. */ |
| if (info_verbose) |
| printf_filtered ("LWP %d doesn't respond.\n", |
| (procinfo->pid >> 16) & 0xffff); |
| close_proc_file (procinfo); |
| continue; |
| } |
| |
| /* Don't try to start a process unless it's stopped on an |
| `event of interest'. Doing so will cause errors. */ |
| |
| if ((procinfo->prstatus.pr_flags & PR_ISTOP) |
| && ioctl (procinfo->ctl_fd, PIOCRUN, &procinfo->prrun) < 0) |
| { |
| if (!procfs_read_status (procinfo)) |
| fprintf_unfiltered (gdb_stderr, |
| "procfs_read_status failed, errno=%d\n", |
| errno); |
| print_sys_errmsg (procinfo->pathname, errno); |
| warning ("PIOCRUN failed"); |
| } |
| #endif |
| } |
| procfs_read_status (procinfo); |
| } |
| } |
| |
| /* |
| |
| LOCAL FUNCTION |
| |
| procfs_fetch_registers -- fetch current registers from inferior |
| |
| SYNOPSIS |
| |
| void procfs_fetch_registers (int regno) |
| |
| DESCRIPTION |
| |
| Read the current values of the inferior's registers, both the |
| general register set and floating point registers (if supported) |
| and update gdb's idea of their current values. |
| |
| */ |
| |
| static void |
| procfs_fetch_registers (regno) |
| int regno; |
| { |
| struct procinfo *pi; |
| |
| pi = current_procinfo; |
| |
| #ifdef UNIXWARE |
| if (procfs_read_status (pi)) |
| { |
| supply_gregset (&pi->prstatus.pr_lwp.pr_context.uc_mcontext.gregs); |
| #if defined (FP0_REGNUM) |
| supply_fpregset (&pi->prstatus.pr_lwp.pr_context.uc_mcontext.fpregs); |
| #endif |
| } |
| #else /* UNIXWARE */ |
| if (ioctl (pi->ctl_fd, PIOCGREG, &pi->gregset.gregset) != -1) |
| { |
| supply_gregset (&pi->gregset.gregset); |
| } |
| #if defined (FP0_REGNUM) |
| if (ioctl (pi->ctl_fd, PIOCGFPREG, &pi->fpregset.fpregset) != -1) |
| { |
| supply_fpregset (&pi->fpregset.fpregset); |
| } |
| #endif |
| #endif /* UNIXWARE */ |
| } |
| |
| /* |
| |
| LOCAL FUNCTION |
| |
| proc_init_failed - called when /proc access initialization fails |
| fails |
| |
| SYNOPSIS |
| |
| static void proc_init_failed (struct procinfo *pi, |
| char *why, int kill_p) |
| |
| DESCRIPTION |
| |
| This function is called whenever initialization of access to a /proc |
| entry fails. It prints a suitable error message, does some cleanup, |
| and then invokes the standard error processing routine which dumps |
| us back into the command loop. If KILL_P is true, sends SIGKILL. |
| */ |
| |
| static void |
| proc_init_failed (pi, why, kill_p) |
| struct procinfo *pi; |
| char *why; |
| int kill_p; |
| { |
| print_sys_errmsg (pi->pathname, errno); |
| if (kill_p) |
| kill (pi->pid, SIGKILL); |
| close_proc_file (pi); |
| error (why); |
| /* NOTREACHED */ |
| } |
| |
| /* |
| |
| LOCAL FUNCTION |
| |
| close_proc_file - close any currently open /proc entry |
| |
| SYNOPSIS |
| |
| static void close_proc_file (struct procinfo *pip) |
| |
| DESCRIPTION |
| |
| Close any currently open /proc entry and mark the process information |
| entry as invalid. In order to ensure that we don't try to reuse any |
| stale information, the pid, fd, and pathnames are explicitly |
| invalidated, which may be overkill. |
| |
| */ |
| |
| static void |
| close_proc_file (pip) |
| struct procinfo *pip; |
| { |
| struct procinfo *procinfo; |
| |
| delete_thread (pip->pid); /* remove thread from GDB's thread list */ |
| remove_fd (pip); /* Remove fd from poll/select list */ |
| |
| close (pip->ctl_fd); |
| #ifdef HAVE_MULTIPLE_PROC_FDS |
| close (pip->as_fd); |
| close (pip->status_fd); |
| close (pip->map_fd); |
| #endif |
| |
| free (pip->pathname); |
| |
| /* Unlink pip from the procinfo chain. Note pip might not be on the list. */ |
| |
| if (procinfo_list == pip) |
| procinfo_list = pip->next; |
| else |
| { |
| for (procinfo = procinfo_list; procinfo; procinfo = procinfo->next) |
| { |
| if (procinfo->next == pip) |
| { |
| procinfo->next = pip->next; |
| break; |
| } |
| } |
| free (pip); |
| } |
| } |
| |
| static void |
| close_proc_file_cleanup (pip) |
| void *pip; |
| { |
| close_proc_file ((struct procinfo *) pip); |
| } |
| |
| static struct cleanup * |
| make_cleanup_close_proc_file (pip) |
| struct procinfo *pip; |
| { |
| return make_cleanup (close_proc_file_cleanup, pip); |
| } |
| |
| /* |
| |
| LOCAL FUNCTION |
| |
| open_proc_file - open a /proc entry for a given process id |
| |
| SYNOPSIS |
| |
| static int open_proc_file (int pid, struct procinfo *pip, int mode) |
| |
| DESCRIPTION |
| |
| Given a process id and a mode, close the existing open /proc |
| entry (if any) and open one for the new process id, in the |
| specified mode. Once it is open, then mark the local process |
| information structure as valid, which guarantees that the pid, |
| fd, and pathname fields match an open /proc entry. Returns |
| zero if the open fails, nonzero otherwise. |
| |
| Note that the pathname is left intact, even when the open fails, |
| so that callers can use it to construct meaningful error messages |
| rather than just "file open failed". |
| |
| Note that for Solaris, the process-id also includes an LWP-id, so we |
| actually attempt to open that. If we are handed a pid with a 0 LWP-id, |
| then we will ask the kernel what it is and add it to the pid. Hence, |
| the pid can be changed by us. |
| */ |
| |
| static int |
| open_proc_file (pid, pip, mode, control) |
| int pid; |
| struct procinfo *pip; |
| int mode; |
| int control; |
| { |
| int tmp, tmpfd; |
| |
| pip->next = NULL; |
| pip->had_event = 0; |
| pip->pathname = xmalloc (MAX_PROC_NAME_SIZE); |
| pip->pid = pid; |
| |
| #ifndef PIOCOPENLWP |
| tmp = pid; |
| #else |
| tmp = pid & 0xffff; |
| #endif |
| |
| #ifdef HAVE_MULTIPLE_PROC_FDS |
| sprintf (pip->pathname, STATUS_PROC_NAME_FMT, tmp); |
| if ((pip->status_fd = open (pip->pathname, O_RDONLY)) < 0) |
| { |
| return 0; |
| } |
| |
| sprintf (pip->pathname, AS_PROC_NAME_FMT, tmp); |
| if ((pip->as_fd = open (pip->pathname, O_RDWR)) < 0) |
| { |
| close (pip->status_fd); |
| return 0; |
| } |
| |
| sprintf (pip->pathname, MAP_PROC_NAME_FMT, tmp); |
| if ((pip->map_fd = open (pip->pathname, O_RDONLY)) < 0) |
| { |
| close (pip->status_fd); |
| close (pip->as_fd); |
| return 0; |
| } |
| |
| if (control) |
| { |
| sprintf (pip->pathname, CTL_PROC_NAME_FMT, tmp); |
| if ((pip->ctl_fd = open (pip->pathname, O_WRONLY)) < 0) |
| { |
| close (pip->status_fd); |
| close (pip->as_fd); |
| close (pip->map_fd); |
| return 0; |
| } |
| } |
| |
| #else /* HAVE_MULTIPLE_PROC_FDS */ |
| sprintf (pip->pathname, CTL_PROC_NAME_FMT, tmp); |
| |
| if ((tmpfd = open (pip->pathname, mode)) < 0) |
| return 0; |
| |
| #ifndef PIOCOPENLWP |
| pip->ctl_fd = tmpfd; |
| pip->as_fd = tmpfd; |
| pip->map_fd = tmpfd; |
| pip->status_fd = tmpfd; |
| #else |
| tmp = (pid >> 16) & 0xffff; /* Extract thread id */ |
| |
| if (tmp == 0) |
| { /* Don't know thread id yet */ |
| if (ioctl (tmpfd, PIOCSTATUS, &pip->prstatus) < 0) |
| { |
| print_sys_errmsg (pip->pathname, errno); |
| close (tmpfd); |
| error ("open_proc_file: PIOCSTATUS failed"); |
| } |
| |
| tmp = pip->prstatus.pr_who; /* Get thread id from prstatus_t */ |
| pip->pid = (tmp << 16) | pid; /* Update pip */ |
| } |
| |
| if ((pip->ctl_fd = ioctl (tmpfd, PIOCOPENLWP, &tmp)) < 0) |
| { |
| close (tmpfd); |
| return 0; |
| } |
| |
| #ifdef PIOCSET /* New method */ |
| { |
| long pr_flags; |
| pr_flags = PR_ASYNC; |
| ioctl (pip->ctl_fd, PIOCSET, &pr_flags); |
| } |
| #endif |
| |
| /* keep extra fds in sync */ |
| pip->as_fd = pip->ctl_fd; |
| pip->map_fd = pip->ctl_fd; |
| pip->status_fd = pip->ctl_fd; |
| |
| close (tmpfd); /* All done with main pid */ |
| #endif /* PIOCOPENLWP */ |
| |
| #endif /* HAVE_MULTIPLE_PROC_FDS */ |
| |
| return 1; |
| } |
| |
| static char * |
| mappingflags (flags) |
| long flags; |
| { |
| static char asciiflags[8]; |
| |
| strcpy (asciiflags, "-------"); |
| #if defined (MA_PHYS) |
| if (flags & MA_PHYS) |
| asciiflags[0] = 'd'; |
| #endif |
| if (flags & MA_STACK) |
| asciiflags[1] = 's'; |
| if (flags & MA_BREAK) |
| asciiflags[2] = 'b'; |
| if (flags & MA_SHARED) |
| asciiflags[3] = 's'; |
| if (flags & MA_READ) |
| asciiflags[4] = 'r'; |
| if (flags & MA_WRITE) |
| asciiflags[5] = 'w'; |
| if (flags & MA_EXEC) |
| asciiflags[6] = 'x'; |
| return (asciiflags); |
| } |
| |
| static void |
| info_proc_flags (pip, summary) |
| struct procinfo *pip; |
| int summary; |
| { |
| struct trans *transp; |
| #ifdef UNIXWARE |
| long flags = pip->prstatus.pr_flags | pip->prstatus.pr_lwp.pr_flags; |
| #else |
| long flags = pip->prstatus.pr_flags; |
| #endif |
| |
| printf_filtered ("%-32s", "Process status flags:"); |
| if (!summary) |
| { |
| printf_filtered ("\n\n"); |
| } |
| for (transp = pr_flag_table; transp->name != NULL; transp++) |
| { |
| if (flags & transp->value) |
| { |
| if (summary) |
| { |
| printf_filtered ("%s ", transp->name); |
| } |
| else |
| { |
| printf_filtered ("\t%-16s %s.\n", transp->name, transp->desc); |
| } |
| } |
| } |
| printf_filtered ("\n"); |
| } |
| |
| static void |
| info_proc_stop (pip, summary) |
| struct procinfo *pip; |
| int summary; |
| { |
| struct trans *transp; |
| int why; |
| int what; |
| |
| why = THE_PR_LWP (pip->prstatus).pr_why; |
| what = THE_PR_LWP (pip->prstatus).pr_what; |
| |
| if (THE_PR_LWP (pip->prstatus).pr_flags & PR_STOPPED) |
| { |
| printf_filtered ("%-32s", "Reason for stopping:"); |
| if (!summary) |
| { |
| printf_filtered ("\n\n"); |
| } |
| for (transp = pr_why_table; transp->name != NULL; transp++) |
| { |
| if (why == transp->value) |
| { |
| if (summary) |
| { |
| printf_filtered ("%s ", transp->name); |
| } |
| else |
| { |
| printf_filtered ("\t%-16s %s.\n", |
| transp->name, transp->desc); |
| } |
| break; |
| } |
| } |
| |
| /* Use the pr_why field to determine what the pr_what field means, and |
| print more information. */ |
| |
| switch (why) |
| { |
| case PR_REQUESTED: |
| /* pr_what is unused for this case */ |
| break; |
| case PR_JOBCONTROL: |
| case PR_SIGNALLED: |
| if (summary) |
| { |
| printf_filtered ("%s ", signalname (what)); |
| } |
| else |
| { |
| printf_filtered ("\t%-16s %s.\n", signalname (what), |
| safe_strsignal (what)); |
| } |
| break; |
| case PR_SYSENTRY: |
| if (summary) |
| { |
| printf_filtered ("%s ", syscallname (what)); |
| } |
| else |
| { |
| printf_filtered ("\t%-16s %s.\n", syscallname (what), |
| "Entered this system call"); |
| } |
| break; |
| case PR_SYSEXIT: |
| if (summary) |
| { |
| printf_filtered ("%s ", syscallname (what)); |
| } |
| else |
| { |
| printf_filtered ("\t%-16s %s.\n", syscallname (what), |
| "Returned from this system call"); |
| } |
| break; |
| case PR_FAULTED: |
| if (summary) |
| { |
| printf_filtered ("%s ", |
| lookupname (faults_table, what, "fault")); |
| } |
| else |
| { |
| printf_filtered ("\t%-16s %s.\n", |
| lookupname (faults_table, what, "fault"), |
| lookupdesc (faults_table, what)); |
| } |
| break; |
| } |
| printf_filtered ("\n"); |
| } |
| } |
| |
| static void |
| info_proc_siginfo (pip, summary) |
| struct procinfo *pip; |
| int summary; |
| { |
| struct siginfo *sip; |
| |
| if ((THE_PR_LWP (pip->prstatus).pr_flags & PR_STOPPED) && |
| (THE_PR_LWP (pip->prstatus).pr_why == PR_SIGNALLED || |
| THE_PR_LWP (pip->prstatus).pr_why == PR_FAULTED)) |
| { |
| printf_filtered ("%-32s", "Additional signal/fault info:"); |
| sip = &(THE_PR_LWP (pip->prstatus).pr_info); |
| if (summary) |
| { |
| printf_filtered ("%s ", signalname (sip->si_signo)); |
| if (sip->si_errno > 0) |
| { |
| printf_filtered ("%s ", errnoname (sip->si_errno)); |
| } |
| if (sip->si_code <= 0) |
| { |
| printf_filtered ("sent by %s, uid %d ", |
| target_pid_to_str (sip->si_pid), |
| sip->si_uid); |
| } |
| else |
| { |
| printf_filtered ("%s ", sigcodename (sip)); |
| if ((sip->si_signo == SIGILL) || |
| (sip->si_signo == SIGFPE) || |
| (sip->si_signo == SIGSEGV) || |
| (sip->si_signo == SIGBUS)) |
| { |
| printf_filtered ("addr=%#lx ", |
| (unsigned long) sip->si_addr); |
| } |
| else if ((sip->si_signo == SIGCHLD)) |
| { |
| printf_filtered ("child %s, status %u ", |
| target_pid_to_str (sip->si_pid), |
| sip->si_status); |
| } |
| else if ((sip->si_signo == SIGPOLL)) |
| { |
| printf_filtered ("band %u ", sip->si_band); |
| } |
| } |
| } |
| else |
| { |
| printf_filtered ("\n\n"); |
| printf_filtered ("\t%-16s %s.\n", signalname (sip->si_signo), |
| safe_strsignal (sip->si_signo)); |
| if (sip->si_errno > 0) |
| { |
| printf_filtered ("\t%-16s %s.\n", |
| errnoname (sip->si_errno), |
| safe_strerror (sip->si_errno)); |
| } |
| if (sip->si_code <= 0) |
| { |
| printf_filtered ("\t%-16u %s\n", sip->si_pid, /* XXX need target_pid_to_str() */ |
| "PID of process sending signal"); |
| printf_filtered ("\t%-16u %s\n", sip->si_uid, |
| "UID of process sending signal"); |
| } |
| else |
| { |
| printf_filtered ("\t%-16s %s.\n", sigcodename (sip), |
| sigcodedesc (sip)); |
| if ((sip->si_signo == SIGILL) || |
| (sip->si_signo == SIGFPE)) |
| { |
| printf_filtered ("\t%#-16lx %s.\n", |
| (unsigned long) sip->si_addr, |
| "Address of faulting instruction"); |
| } |
| else if ((sip->si_signo == SIGSEGV) || |
| (sip->si_signo == SIGBUS)) |
| { |
| printf_filtered ("\t%#-16lx %s.\n", |
| (unsigned long) sip->si_addr, |
| "Address of faulting memory reference"); |
| } |
| else if ((sip->si_signo == SIGCHLD)) |
| { |
| printf_filtered ("\t%-16u %s.\n", sip->si_pid, /* XXX need target_pid_to_str() */ |
| "Child process ID"); |
| printf_filtered ("\t%-16u %s.\n", sip->si_status, |
| "Child process exit value or signal"); |
| } |
| else if ((sip->si_signo == SIGPOLL)) |
| { |
| printf_filtered ("\t%-16u %s.\n", sip->si_band, |
| "Band event for POLL_{IN,OUT,MSG}"); |
| } |
| } |
| } |
| printf_filtered ("\n"); |
| } |
| } |
| |
| static void |
| info_proc_syscalls (pip, summary) |
| struct procinfo *pip; |
| int summary; |
| { |
| int syscallnum; |
| |
| if (!summary) |
| { |
| |
| #if 0 /* FIXME: Needs to use gdb-wide configured info about system calls. */ |
| if (pip->prstatus.pr_flags & PR_ASLEEP) |
| { |
| int syscallnum = pip->prstatus.pr_reg[R_D0]; |
| if (summary) |
| { |
| printf_filtered ("%-32s", "Sleeping in system call:"); |
| printf_filtered ("%s", syscallname (syscallnum)); |
| } |
| else |
| { |
| printf_filtered ("Sleeping in system call '%s'.\n", |
| syscallname (syscallnum)); |
| } |
| } |
| #endif |
| |
| #ifndef UNIXWARE |
| if (ioctl (pip->ctl_fd, PIOCGENTRY, &pip->entryset) < 0) |
| { |
| print_sys_errmsg (pip->pathname, errno); |
| error ("PIOCGENTRY failed"); |
| } |
| |
| if (ioctl (pip->ctl_fd, PIOCGEXIT, &pip->exitset) < 0) |
| { |
| print_sys_errmsg (pip->pathname, errno); |
| error ("PIOCGEXIT failed"); |
| } |
| #endif |
| |
| printf_filtered ("System call tracing information:\n\n"); |
| |
| printf_filtered ("\t%-12s %-8s %-8s\n", |
| "System call", |
| "Entry", |
| "Exit"); |
| for (syscallnum = 0; syscallnum < MAX_SYSCALLS; syscallnum++) |
| { |
| QUIT; |
| if (syscall_table[syscallnum] != NULL) |
| printf_filtered ("\t%-12s ", syscall_table[syscallnum]); |
| else |
| printf_filtered ("\t%-12d ", syscallnum); |
| |
| #ifdef UNIXWARE |
| printf_filtered ("%-8s ", |
| prismember (&pip->prstatus.pr_sysentry, syscallnum) |
| ? "on" : "off"); |
| printf_filtered ("%-8s ", |
| prismember (&pip->prstatus.pr_sysexit, syscallnum) |
| ? "on" : "off"); |
| #else |
| printf_filtered ("%-8s ", |
| prismember (&pip->entryset, syscallnum) |
| ? "on" : "off"); |
| printf_filtered ("%-8s ", |
| prismember (&pip->exitset, syscallnum) |
| ? "on" : "off"); |
| #endif |
| printf_filtered ("\n"); |
| } |
| printf_filtered ("\n"); |
| } |
| } |
| |
| static char * |
| signalname (signo) |
| int signo; |
| { |
| const char *name; |
| static char locbuf[32]; |
| |
| name = strsigno (signo); |
| if (name == NULL) |
| { |
| sprintf (locbuf, "Signal %d", signo); |
| } |
| else |
| { |
| sprintf (locbuf, "%s (%d)", name, signo); |
| } |
| return (locbuf); |
| } |
| |
| static char * |
| errnoname (errnum) |
| int errnum; |
| { |
| const char *name; |
| static char locbuf[32]; |
| |
| name = strerrno (errnum); |
| if (name == NULL) |
| { |
| sprintf (locbuf, "Errno %d", errnum); |
| } |
| else |
| { |
| sprintf (locbuf, "%s (%d)", name, errnum); |
| } |
| return (locbuf); |
| } |
| |
| static void |
| info_proc_signals (pip, summary) |
| struct procinfo *pip; |
| int summary; |
| { |
| int signo; |
| |
| if (!summary) |
| { |
| #ifndef PROCFS_USE_READ_WRITE |
| if (ioctl (pip->ctl_fd, PIOCGTRACE, &pip->trace) < 0) |
| { |
| print_sys_errmsg (pip->pathname, errno); |
| error ("PIOCGTRACE failed"); |
| } |
| #endif |
| |
| printf_filtered ("Disposition of signals:\n\n"); |
| printf_filtered ("\t%-15s %-8s %-8s %-8s %s\n\n", |
| "Signal", "Trace", "Hold", "Pending", "Description"); |
| for (signo = 0; signo < NSIG; signo++) |
| { |
| QUIT; |
| printf_filtered ("\t%-15s ", signalname (signo)); |
| #ifdef UNIXWARE |
| printf_filtered ("%-8s ", |
| prismember (&pip->prstatus.pr_sigtrace, signo) |
| ? "on" : "off"); |
| printf_filtered ("%-8s ", |
| prismember (&pip->prstatus.pr_lwp.pr_context.uc_sigmask, signo) |
| ? "on" : "off"); |
| #else |
| printf_filtered ("%-8s ", |
| prismember (&pip->trace, signo) |
| ? "on" : "off"); |
| printf_filtered ("%-8s ", |
| prismember (&pip->prstatus.pr_sighold, signo) |
| ? "on" : "off"); |
| #endif |
| |
| #ifdef UNIXWARE |
| if (prismember (&pip->prstatus.pr_sigpend, signo) || |
| prismember (&pip->prstatus.pr_lwp.pr_lwppend, signo)) |
| printf_filtered ("%-8s ", "yes"); |
| else |
| printf_filtered ("%-8s ", "no"); |
| #else /* UNIXWARE */ |
| #ifdef PROCFS_SIGPEND_OFFSET |
| /* Alpha OSF/1 numbers the pending signals from 1. */ |
| printf_filtered ("%-8s ", |
| (signo ? prismember (&pip->prstatus.pr_sigpend, |
| signo - 1) |
| : 0) |
| ? "yes" : "no"); |
| #else |
| printf_filtered ("%-8s ", |
| prismember (&pip->prstatus.pr_sigpend, signo) |
| ? "yes" : "no"); |
| #endif |
| #endif /* UNIXWARE */ |
| printf_filtered (" %s\n", safe_strsignal (signo)); |
| } |
| printf_filtered ("\n"); |
| } |
| } |
| |
| static void |
| info_proc_faults (pip, summary) |
| struct procinfo *pip; |
| int summary; |
| { |
| struct trans *transp; |
| |
| if (!summary) |
| { |
| #ifndef UNIXWARE |
| if (ioctl (pip->ctl_fd, PIOCGFAULT, &pip->fltset.fltset) < 0) |
| { |
| print_sys_errmsg (pip->pathname, errno); |
| error ("PIOCGFAULT failed"); |
| } |
| #endif |
| |
| printf_filtered ("Current traced hardware fault set:\n\n"); |
| printf_filtered ("\t%-12s %-8s\n", "Fault", "Trace"); |
| |
| for (transp = faults_table; transp->name != NULL; transp++) |
| { |
| QUIT; |
| printf_filtered ("\t%-12s ", transp->name); |
| #ifdef UNIXWARE |
| printf_filtered ("%-8s", prismember (&pip->prstatus.pr_flttrace, transp->value) |
| ? "on" : "off"); |
| #else |
| printf_filtered ("%-8s", prismember (&pip->fltset.fltset, transp->value) |
| ? "on" : "off"); |
| #endif |
| printf_filtered ("\n"); |
| } |
| printf_filtered ("\n"); |
| } |
| } |
| |
| static void |
| info_proc_mappings (pip, summary) |
| struct procinfo *pip; |
| int summary; |
| { |
| int nmap; |
| struct prmap *prmaps; |
| struct prmap *prmap; |
| #ifdef PROCFS_USE_READ_WRITE |
| struct stat sbuf; |
| #endif |
| |
| if (!summary) |
| { |
| printf_filtered ("Mapped address spaces:\n\n"); |
| #ifdef BFD_HOST_64_BIT |
| printf_filtered (" %18s %18s %10s %10s %7s\n", |
| #else |
| printf_filtered ("\t%10s %10s %10s %10s %7s\n", |
| #endif |
| "Start Addr", |
| " End Addr", |
| " Size", |
| " Offset", |
| "Flags"); |
| #ifdef PROCFS_USE_READ_WRITE |
| if (fstat (pip->map_fd, &sbuf) == 0) |
| { |
| nmap = sbuf.st_size / sizeof (prmap_t); |
| prmaps = (struct prmap *) alloca ((nmap + 1) * sizeof (*prmaps)); |
| if ((lseek (pip->map_fd, 0, SEEK_SET) == 0) && |
| (read (pip->map_fd, (char *) prmaps, |
| nmap * sizeof (*prmaps)) == (nmap * sizeof (*prmaps)))) |
| { |
| int i = 0; |
| for (prmap = prmaps; i < nmap; ++prmap, ++i) |
| #else |
| if (ioctl (pip->ctl_fd, PIOCNMAP, &nmap) == 0) |
| { |
| prmaps = (struct prmap *) alloca ((nmap + 1) * sizeof (*prmaps)); |
| if (ioctl (pip->ctl_fd, PIOCMAP, prmaps) == 0) |
| { |
| for (prmap = prmaps; prmap->pr_size; ++prmap) |
| #endif /* PROCFS_USE_READ_WRITE */ |
| { |
| #ifdef BFD_HOST_64_BIT |
| printf_filtered (" %#18lx %#18lx %#10x %#10x %7s\n", |
| #else |
| printf_filtered ("\t%#10lx %#10lx %#10x %#10x %7s\n", |
| #endif |
| (unsigned long) prmap->pr_vaddr, |
| (unsigned long) prmap->pr_vaddr |
| + prmap->pr_size - 1, |
| prmap->pr_size, |
| prmap->pr_off, |
| mappingflags (prmap->pr_mflags)); |
| } |
| } |
| } |
| printf_filtered ("\n"); |
| } |
| } |
| |
| /* |
| |
| LOCAL FUNCTION |
| |
| info_proc -- implement the "info proc" command |
| |
| SYNOPSIS |
| |
| void info_proc (char *args, int from_tty) |
| |
| DESCRIPTION |
| |
| Implement gdb's "info proc" command by using the /proc interface |
| to print status information about any currently running process. |
| |
| Examples of the use of "info proc" are: |
| |
| info proc (prints summary info for current inferior) |
| info proc 123 (prints summary info for process with pid 123) |
| info proc mappings (prints address mappings) |
| info proc times (prints process/children times) |
| info proc id (prints pid, ppid, gid, sid, etc) |
| FIXME: i proc id not implemented. |
| info proc status (prints general process state info) |
| FIXME: i proc status not implemented. |
| info proc signals (prints info about signal handling) |
| info proc all (prints all info) |
| |
| */ |
| |
| static void |
| info_proc (args, from_tty) |
| char *args; |
| int from_tty; |
| { |
| int pid; |
| struct procinfo *pip; |
| struct cleanup *old_chain; |
| char **argv; |
| int argsize; |
| int summary = 1; |
| int flags = 0; |
| int syscalls = 0; |
| int signals = 0; |
| int faults = 0; |
| int mappings = 0; |
| int times = 0; |
| int id = 0; |
| int status = 0; |
| int all = 0; |
| int nlwp; |
| int *lwps; |
| |
| old_chain = make_cleanup (null_cleanup, 0); |
| |
| /* Default to using the current inferior if no pid specified. Note |
| that inferior_pid may be 0, hence we set okerr. */ |
| |
| pid = inferior_pid & 0x7fffffff; /* strip off sol-thread bit */ |
| if (!(pip = find_procinfo (pid, 1))) /* inferior_pid no good? */ |
| pip = procinfo_list; /* take first available */ |
| pid = pid & 0xffff; /* extract "real" pid */ |
| |
| if (args != NULL) |
| { |
| if ((argv = buildargv (args)) == NULL) |
| { |
| nomem (0); |
| } |
| make_cleanup_freeargv (argv); |
| |
| while (*argv != NULL) |
| { |
| argsize = strlen (*argv); |
| if (argsize >= 1 && strncmp (*argv, "all", argsize) == 0) |
| { |
| summary = 0; |
| all = 1; |
| } |
| else if (argsize >= 2 && strncmp (*argv, "faults", argsize) == 0) |
| { |
| summary = 0; |
| faults = 1; |
| } |
| else if (argsize >= 2 && strncmp (*argv, "flags", argsize) == 0) |
| { |
| summary = 0; |
| flags = 1; |
| } |
| else if (argsize >= 1 && strncmp (*argv, "id", argsize) == 0) |
| { |
| summary = 0; |
| id = 1; |
| } |
| else if (argsize >= 1 && strncmp (*argv, "mappings", argsize) == 0) |
| { |
| summary = 0; |
| mappings = 1; |
| } |
| else if (argsize >= 2 && strncmp (*argv, "signals", argsize) == 0) |
| { |
| summary = 0; |
| signals = 1; |
| } |
| else if (argsize >= 2 && strncmp (*argv, "status", argsize) == 0) |
| { |
| summary = 0; |
| status = 1; |
| } |
| else if (argsize >= 2 && strncmp (*argv, "syscalls", argsize) == 0) |
| { |
| summary = 0; |
| syscalls = 1; |
| } |
| else if (argsize >= 1 && strncmp (*argv, "times", argsize) == 0) |
| { |
| summary = 0; |
| times = 1; |
| } |
| else if ((pid = atoi (*argv)) > 0) |
| { |
| pip = (struct procinfo *) xmalloc (sizeof (struct procinfo)); |
| memset (pip, 0, sizeof (*pip)); |
| |
| pip->pid = pid; |
| if (!open_proc_file (pid, pip, O_RDONLY, 0)) |
| { |
| perror_with_name (pip->pathname); |
| /* NOTREACHED */ |
| } |
| pid = pip->pid; |
| make_cleanup_close_proc_file (pip); |
| } |
| else if (**argv != '\000') |
| { |
| error ("Unrecognized or ambiguous keyword `%s'.", *argv); |
| } |
| argv++; |
| } |
| } |
| |
| /* If we don't have a valid open process at this point, then we have no |
| inferior or didn't specify a specific pid. */ |
| |
| if (!pip) |
| { |
| error ("\ |
| No process. Start debugging a program or specify an explicit process ID."); |
| } |
| |
| if (!procfs_read_status (pip)) |
| { |
| print_sys_errmsg (pip->pathname, errno); |
| error ("procfs_read_status failed"); |
| } |
| |
| #ifndef PROCFS_USE_READ_WRITE |
| #ifdef PIOCLWPIDS |
| nlwp = pip->prstatus.pr_nlwp; |
| lwps = alloca ((2 * nlwp + 2) * sizeof (*lwps)); |
| |
| if (ioctl (pip->ctl_fd, PIOCLWPIDS, lwps)) |
| { |
| print_sys_errmsg (pip->pathname, errno); |
| error ("PIOCLWPIDS failed"); |
| } |
| #else /* PIOCLWPIDS */ |
| nlwp = 1; |
| lwps = alloca ((2 * nlwp + 2) * sizeof *lwps); |
| lwps[0] = 0; |
| #endif /* PIOCLWPIDS */ |
| |
| for (; nlwp > 0; nlwp--, lwps++) |
| { |
| pip = find_procinfo ((*lwps << 16) | pid, 1); |
| |
| if (!pip) |
| { |
| pip = (struct procinfo *) xmalloc (sizeof (struct procinfo)); |
| memset (pip, 0, sizeof (*pip)); |
| if (!open_proc_file ((*lwps << 16) | pid, pip, O_RDONLY, 0)) |
| continue; |
| |
| make_cleanup_close_proc_file (pip); |
| |
| if (!procfs_read_status (pip)) |
| { |
| print_sys_errmsg (pip->pathname, errno); |
| error ("procfs_read_status failed"); |
| } |
| } |
| |
| #endif /* PROCFS_USE_READ_WRITE */ |
| |
| /* Print verbose information of the requested type(s), or just a summary |
| of the information for all types. */ |
| |
| printf_filtered ("\nInformation for %s.%d:\n\n", pip->pathname, *lwps); |
| if (summary || all || flags) |
| { |
| info_proc_flags (pip, summary); |
| } |
| if (summary || all) |
| { |
| info_proc_stop (pip, summary); |
| #ifdef UNIXWARE |
| supply_gregset (&pip->prstatus.pr_lwp.pr_context.uc_mcontext.gregs); |
| #else |
| supply_gregset (&pip->prstatus.pr_reg); |
| #endif |
| printf_filtered ("PC: "); |
| print_address (read_pc (), gdb_stdout); |
| printf_filtered ("\n"); |
| } |
| if (summary || all || signals || faults) |
| { |
| info_proc_siginfo (pip, summary); |
| } |
| if (summary || all || syscalls) |
| { |
| info_proc_syscalls (pip, summary); |
| } |
| if (summary || all || mappings) |
| { |
| info_proc_mappings (pip, summary); |
| } |
| if (summary || all || signals) |
| { |
| info_proc_signals (pip, summary); |
| } |
| if (summary || all || faults) |
| { |
| info_proc_faults (pip, summary); |
| } |
| printf_filtered ("\n"); |
| |
| /* All done, deal with closing any temporary process info structure, |
| freeing temporary memory , etc. */ |
| |
| do_cleanups (old_chain); |
| #ifndef PROCFS_USE_READ_WRITE |
| } |
| #endif |
| } |
| |
| /* |
| |
| LOCAL FUNCTION |
| |
| modify_inherit_on_fork_flag - Change the inherit-on-fork flag |
| |
| SYNOPSIS |
| |
| void modify_inherit_on_fork_flag (fd, flag) |
| |
| DESCRIPTION |
| |
| Call this routine to modify the inherit-on-fork flag. This routine is |
| just a nice wrapper to hide the #ifdefs needed by various systems to |
| control this flag. |
| |
| */ |
| |
| static void |
| modify_inherit_on_fork_flag (fd, flag) |
| int fd; |
| int flag; |
| { |
| #if defined (PIOCSET) || defined (PCSET) |
| long pr_flags; |
| #endif |
| int retval = 0; |
| #ifdef PROCFS_USE_READ_WRITE |
| struct proc_ctl pctl; |
| #endif |
| |
| #if defined (PIOCSET) || defined (PCSET) /* New method */ |
| pr_flags = PR_FORK; |
| if (flag) |
| { |
| #ifdef PROCFS_USE_READ_WRITE |
| pctl.cmd = PCSET; |
| pctl.data = PR_FORK; |
| if (write (fd, (char *) &pctl, sizeof (struct proc_ctl)) < 0) |
| retval = -1; |
| #else |
| retval = ioctl (fd, PIOCSET, &pr_flags); |
| #endif |
| } |
| else |
| { |
| #ifdef PROCFS_USE_READ_WRITE |
| pctl.cmd = PCRESET; |
| pctl.data = PR_FORK; |
| if (write (fd, (char *) &pctl, sizeof (struct proc_ctl)) < 0) |
| retval = -1; |
| #else |
| retval = ioctl (fd, PIOCRESET, &pr_flags); |
| #endif |
| } |
| |
| #else |
| #ifdef PIOCSFORK /* Original method */ |
| if (flag) |
| { |
| retval = ioctl (fd, PIOCSFORK, NULL); |
| } |
| else |
| { |
| retval = ioctl (fd, PIOCRFORK, NULL); |
| } |
| #else |
| Neither PR_FORK nor PIOCSFORK exist ! !! |
| #endif |
| #endif |
| |
| if (!retval) |
| return; |
| |
| print_sys_errmsg ("modify_inherit_on_fork_flag", errno); |
| error ("PIOCSFORK or PR_FORK modification failed"); |
| } |
| |
| /* |
| |
| LOCAL FUNCTION |
| |
| modify_run_on_last_close_flag - Change the run-on-last-close flag |
| |
| SYNOPSIS |
| |
| void modify_run_on_last_close_flag (fd, flag) |
| |
| DESCRIPTION |
| |
| Call this routine to modify the run-on-last-close flag. This routine |
| is just a nice wrapper to hide the #ifdefs needed by various systems to |
| control this flag. |
| |
| */ |
| |
| static void |
| modify_run_on_last_close_flag (fd, flag) |
| int fd; |
| int flag; |
| { |
| #if defined (PIOCSET) || defined (PCSET) |
| long pr_flags; |
| #endif |
| int retval = 0; |
| #ifdef PROCFS_USE_READ_WRITE |
| struct proc_ctl pctl; |
| #endif |
| |
| #if defined (PIOCSET) || defined (PCSET) /* New method */ |
| pr_flags = PR_RLC; |
| if (flag) |
| { |
| #ifdef PROCFS_USE_READ_WRITE |
| pctl.cmd = PCSET; |
| pctl.data = PR_RLC; |
| if (write (fd, (char *) &pctl, sizeof (struct proc_ctl)) < 0) |
| retval = -1; |
| #else |
| retval = ioctl (fd, PIOCSET, &pr_flags); |
| #endif |
| } |
| else |
| { |
| #ifdef PROCFS_USE_READ_WRITE |
| pctl.cmd = PCRESET; |
| pctl.data = PR_RLC; |
| if (write (fd, (char *) &pctl, sizeof (struct proc_ctl)) < 0) |
| retval = -1; |
| #else |
| retval = ioctl (fd, PIOCRESET, &pr_flags); |
| #endif |
| } |
| |
| #else |
| #ifdef PIOCSRLC /* Original method */ |
| if (flag) |
| retval = ioctl (fd, PIOCSRLC, NULL); |
| else |
| retval = ioctl (fd, PIOCRRLC, NULL); |
| #else |
| Neither PR_RLC nor PIOCSRLC exist ! !! |
| #endif |
| #endif |
| |
| if (!retval) |
| return; |
| |
| print_sys_errmsg ("modify_run_on_last_close_flag", errno); |
| error ("PIOCSRLC or PR_RLC modification failed"); |
| } |
| |
| /* |
| |
| LOCAL FUNCTION |
| |
| procfs_clear_syscall_trap -- Deletes the trap for the specified system call. |
| |
| SYNOPSIS |
| |
| void procfs_clear_syscall_trap (struct procinfo *, int syscall_num, int errok) |
| |
| DESCRIPTION |
| |
| This function function disables traps for the specified system call. |
| errok is non-zero if errors should be ignored. |
| */ |
| |
| static void |
| procfs_clear_syscall_trap (pi, syscall_num, errok) |
| struct procinfo *pi; |
| int syscall_num; |
| int errok; |
| { |
| sysset_t sysset; |
| int goterr, i; |
| |
| #ifndef UNIXWARE |
| goterr = ioctl (pi->ctl_fd, PIOCGENTRY, &sysset) < 0; |
| |
| if (goterr && !errok) |
| { |
| print_sys_errmsg (pi->pathname, errno); |
| error ("PIOCGENTRY failed"); |
| } |
| |
| if (!goterr) |
| { |
| prdelset (&sysset, syscall_num); |
| |
| if ((ioctl (pi->ctl_fd, PIOCSENTRY, &sysset) < 0) && !errok) |
| { |
| print_sys_errmsg (pi->pathname, errno); |
| error ("PIOCSENTRY failed"); |
| } |
| } |
| |
| goterr = ioctl (pi->ctl_fd, PIOCGEXIT, &sysset) < 0; |
| |
| if (goterr && !errok) |
| { |
| procfs_clear_syscall_trap (pi, syscall_num, 1); |
| print_sys_errmsg (pi->pathname, errno); |
| error ("PIOCGEXIT failed"); |
| } |
| |
| if (!goterr) |
| { |
| praddset (&sysset, syscall_num); |
| |
| if ((ioctl (pi->ctl_fd, PIOCSEXIT, &sysset) < 0) && !errok) |
| { |
| procfs_clear_syscall_trap (pi, syscall_num, 1); |
| print_sys_errmsg (pi->pathname, errno); |
| error ("PIOCSEXIT failed"); |
| } |
| } |
| #endif |
| |
| if (!pi->syscall_handlers) |
| { |
| if (!errok) |
| error ("procfs_clear_syscall_trap: syscall_handlers is empty"); |
| return; |
| } |
| |
| /* Remove handler func from the handler list */ |
| |
| for (i = 0; i < pi->num_syscall_handlers; i++) |
| if (pi->syscall_handlers[i].syscall_num == syscall_num) |
| { |
| if (i + 1 != pi->num_syscall_handlers) |
| { /* Not the last entry. |
| Move subsequent entries fwd. */ |
| memcpy (&pi->syscall_handlers[i], &pi->syscall_handlers[i + 1], |
| (pi->num_syscall_handlers - i - 1) |
| * sizeof (struct procfs_syscall_handler)); |
| } |
| |
| pi->syscall_handlers = xrealloc (pi->syscall_handlers, |
| (pi->num_syscall_handlers - 1) |
| * sizeof (struct procfs_syscall_handler)); |
| pi->num_syscall_handlers--; |
| return; |
| } |
| |
| if (!errok) |
| error ("procfs_clear_syscall_trap: Couldn't find handler for sys call %d", |
| syscall_num); |
| } |
| |
| /* |
| |
| LOCAL FUNCTION |
| |
| procfs_set_syscall_trap -- arrange for a function to be called when the |
| child executes the specified system call. |
| |
| SYNOPSIS |
| |
| void procfs_set_syscall_trap (struct procinfo *, int syscall_num, int flags, |
| syscall_func_t *function) |
| |
| DESCRIPTION |
| |
| This function sets up an entry and/or exit trap for the specified system |
| call. When the child executes the specified system call, your function |
| will be called with the call #, a flag that indicates entry or exit, and |
| pointers to rtnval and statval (which are used by procfs_wait). The |
| function should return non-zero if something interesting happened, zero |
| otherwise. |
| */ |
| |
| static void |
| procfs_set_syscall_trap (pi, syscall_num, flags, func) |
| struct procinfo *pi; |
| int syscall_num; |
| int flags; |
| syscall_func_t *func; |
| { |
| sysset_t sysset; |
| |
| #ifndef UNIXWARE |
| if (flags & PROCFS_SYSCALL_ENTRY) |
| { |
| if (ioctl (pi->ctl_fd, PIOCGENTRY, &sysset) < 0) |
| { |
| print_sys_errmsg (pi->pathname, errno); |
| error ("PIOCGENTRY failed"); |
| } |
| |
| praddset (&sysset, syscall_num); |
| |
| if (ioctl (pi->ctl_fd, PIOCSENTRY, &sysset) < 0) |
| { |
| print_sys_errmsg (pi->pathname, errno); |
| error ("PIOCSENTRY failed"); |
| } |
| } |
| |
| if (flags & PROCFS_SYSCALL_EXIT) |
| { |
| if (ioctl (pi->ctl_fd, PIOCGEXIT, &sysset) < 0) |
| { |
| procfs_clear_syscall_trap (pi, syscall_num, 1); |
| print_sys_errmsg (pi->pathname, errno); |
| error ("PIOCGEXIT failed"); |
| } |
| |
| praddset (&sysset, syscall_num); |
| |
| if (ioctl (pi->ctl_fd, PIOCSEXIT, &sysset) < 0) |
| { |
| procfs_clear_syscall_trap (pi, syscall_num, 1); |
| print_sys_errmsg (pi->pathname, errno); |
| error ("PIOCSEXIT failed"); |
| } |
| } |
| #endif |
| |
| if (!pi->syscall_handlers) |
| { |
| pi->syscall_handlers = xmalloc (sizeof (struct procfs_syscall_handler)); |
| pi->syscall_handlers[0].syscall_num = syscall_num; |
| pi->syscall_handlers[0].func = func; |
| pi->num_syscall_handlers = 1; |
| } |
| else |
| { |
| int i; |
| |
| for (i = 0; i < pi->num_syscall_handlers; i++) |
| if (pi->syscall_handlers[i].syscall_num == syscall_num) |
| { |
| pi->syscall_handlers[i].func = func; |
| return; |
| } |
| |
| pi->syscall_handlers = xrealloc (pi->syscall_handlers, (i + 1) |
| * sizeof (struct procfs_syscall_handler)); |
| pi->syscall_handlers[i].syscall_num = syscall_num; |
| pi->syscall_handlers[i].func = func; |
| pi->num_syscall_handlers++; |
| } |
| } |
| |
| #ifdef SYS_lwp_create |
| |
| /* |
| |
| LOCAL FUNCTION |
| |
| procfs_lwp_creation_handler - handle exit from the _lwp_create syscall |
| |
| SYNOPSIS |
| |
| int procfs_lwp_creation_handler (pi, syscall_num, why, rtnvalp, statvalp) |
| |
| DESCRIPTION |
| |
| This routine is called both when an inferior process and it's new lwp |
| are about to finish a _lwp_create() system call. This is the system |
| call that Solaris uses to create a lightweight process. When the |
| target process gets this event, we can look at sysarg[2] to find the |
| new childs lwp ID, and create a procinfo struct from that. After that, |
| we pretend that we got a SIGTRAP, and return non-zero to tell |
| procfs_wait to wake up. Subsequently, wait_for_inferior gets woken up, |
| sees the new process and continues it. |
| |
| When we see the child exiting from lwp_create, we just contine it, |
| since everything was handled when the parent trapped. |
| |
| NOTES |
| In effect, we are only paying attention to the parent's completion of |
| the lwp_create syscall. If we only paid attention to the child |
| instead, then we wouldn't detect the creation of a suspended thread. |
| */ |
| |
| static int |
| procfs_lwp_creation_handler (pi, syscall_num, why, rtnvalp, statvalp) |
| struct procinfo *pi; |
| int syscall_num; |
| int why; |
| int *rtnvalp; |
| int *statvalp; |
| { |
| int lwp_id; |
| struct procinfo *childpi; |
| #ifdef UNIXWARE |
| struct proc_ctl pctl; |
| #endif |
| |
| /* We've just detected the completion of an lwp_create system call. Now we |
| need to setup a procinfo struct for this thread, and notify the thread |
| system of the new arrival. */ |
| |
| /* If lwp_create failed, then nothing interesting happened. Continue the |
| process and go back to sleep. */ |
| |
| #ifdef UNIXWARE |
| /* Joel ... can you check this logic out please? JKJ */ |
| if (pi->prstatus.pr_lwp.pr_context.uc_mcontext.gregs[R_EFL] & 1) |
| { /* _lwp_create failed */ |
| pctl.cmd = PCRUN; |
| pctl.data = PRCFAULT; |
| |
| if (write (pi->ctl_fd, (char *) &pctl, sizeof (struct proc_ctl)) < 0) |
| perror_with_name (pi->pathname); |
| |
| return 0; |
| } |
| #else /* UNIXWARE */ |
| if (PROCFS_GET_CARRY (pi->prstatus.pr_reg)) |
| { /* _lwp_create failed */ |
| pi->prrun.pr_flags &= PRSTEP; |
| pi->prrun.pr_flags |= PRCFAULT; |
| |
| if (ioctl (pi->ctl_fd, PIOCRUN, &pi->prrun) != 0) |
| perror_with_name (pi->pathname); |
| |
| return 0; |
| } |
| #endif |
| |
| /* At this point, the new thread is stopped at it's first instruction, and |
| the parent is stopped at the exit from lwp_create. */ |
| |
| if (pi->new_child) /* Child? */ |
| { /* Yes, just continue it */ |
| #ifdef UNIXWARE |
| pctl.cmd = PCRUN; |
| pctl.data = PRCFAULT; |
| |
| if (write (pi->ctl_fd, (char *) &pctl, sizeof (struct proc_ctl)) < 0) |
| #else /* !UNIXWARE */ |
| pi->prrun.pr_flags &= PRSTEP; |
| pi->prrun.pr_flags |= PRCFAULT; |
| |
| if ((pi->prstatus.pr_flags & PR_ISTOP) |
| && ioctl (pi->ctl_fd, PIOCRUN, &pi->prrun) != 0) |
| #endif /* !UNIXWARE */ |
| perror_with_name (pi->pathname); |
| |
| pi->new_child = 0; /* No longer new */ |
| |
| return 0; |
| } |
| |
| /* We're the proud parent of a new thread. Setup an exit trap for lwp_create |
| in the child and continue the parent. */ |
| |
| /* Third arg is pointer to new thread id. */ |
| lwp_id = read_memory_integer ( |
| THE_PR_LWP (pi->prstatus).pr_sysarg[2], sizeof (int)); |
| |
| lwp_id = (lwp_id << 16) | PIDGET (pi->pid); |
| |
| childpi = create_procinfo (lwp_id); |
| |
| /* The new process has actually inherited the lwp_create syscall trap from |
| it's parent, but we still have to call this to register handlers for |
| that child. */ |
| |
| procfs_set_inferior_syscall_traps (childpi); |
| add_thread (lwp_id); |
| printf_filtered ("[New %s]\n", target_pid_to_str (lwp_id)); |
| |
| /* Continue the parent */ |
| #ifdef UNIXWARE |
| pctl.cmd = PCRUN; |
| pctl.data = PRCFAULT; |
| |
| if (write (pi->ctl_fd, (char *) &pctl, sizeof (struct proc_ctl)) < 0) |
| #else |
| pi->prrun.pr_flags &= PRSTEP; |
| pi->prrun.pr_flags |= PRCFAULT; |
| if (ioctl (pi->ctl_fd, PIOCRUN, &pi->prrun) != 0) |
| #endif |
| perror_with_name (pi->pathname); |
| |
| /* The new child may have been created in one of two states: |
| SUSPENDED or RUNNABLE. If runnable, we will simply signal it to run. |
| If suspended, we flag it to be continued later, when it has an event. */ |
| |
| if (THE_PR_LWP (childpi->prstatus).pr_why == PR_SUSPENDED) |
| childpi->new_child = 1; /* Flag this as an unseen child process */ |
| else |
| { |
| /* Continue the child */ |
| #ifdef UNIXWARE |
| pctl.cmd = PCRUN; |
| pctl.data = PRCFAULT; |
| |
| if (write (pi->ctl_fd, (char *) &pctl, sizeof (struct proc_ctl)) < 0) |
| #else |
| childpi->prrun.pr_flags &= PRSTEP; |
| childpi->prrun.pr_flags |= PRCFAULT; |
| |
| if (ioctl (childpi->ctl_fd, PIOCRUN, &childpi->prrun) != 0) |
| #endif |
| perror_with_name (childpi->pathname); |
| } |
| return 0; |
| } |
| #endif /* SYS_lwp_create */ |
| |
| /* Fork an inferior process, and start debugging it with /proc. */ |
| |
| static void |
| procfs_create_inferior (exec_file, allargs, env) |
| char *exec_file; |
| char *allargs; |
| char **env; |
| { |
| char *shell_file = getenv ("SHELL"); |
| char *tryname; |
| if (shell_file != NULL && strchr (shell_file, '/') == NULL) |
| { |
| |
| /* We will be looking down the PATH to find shell_file. If we |
| just do this the normal way (via execlp, which operates by |
| attempting an exec for each element of the PATH until it |
| finds one which succeeds), then there will be an exec for |
| each failed attempt, each of which will cause a PR_SYSEXIT |
| stop, and we won't know how to distinguish the PR_SYSEXIT's |
| for these failed execs with the ones for successful execs |
| (whether the exec has succeeded is stored at that time in the |
| carry bit or some such architecture-specific and |
| non-ABI-specified place). |
| |
| So I can't think of anything better than to search the PATH |
| now. This has several disadvantages: (1) There is a race |
| condition; if we find a file now and it is deleted before we |
| exec it, we lose, even if the deletion leaves a valid file |
| further down in the PATH, (2) there is no way to know exactly |
| what an executable (in the sense of "capable of being |
| exec'd") file is. Using access() loses because it may lose |
| if the caller is the superuser; failing to use it loses if |
| there are ACLs or some such. */ |
| |
| char *p; |
| char *p1; |
| /* FIXME-maybe: might want "set path" command so user can change what |
| path is used from within GDB. */ |
| char *path = getenv ("PATH"); |
| int len; |
| struct stat statbuf; |
| |
| if (path == NULL) |
| path = "/bin:/usr/bin"; |
| |
| tryname = alloca (strlen (path) + strlen (shell_file) + 2); |
| for (p = path; p != NULL; p = p1 ? p1 + 1 : NULL) |
| { |
| p1 = strchr (p, ':'); |
| if (p1 != NULL) |
| len = p1 - p; |
| else |
| len = strlen (p); |
| strncpy (tryname, p, len); |
| tryname[len] = '\0'; |
| strcat (tryname, "/"); |
| strcat (tryname, shell_file); |
| if (access (tryname, X_OK) < 0) |
| continue; |
| if (stat (tryname, &statbuf) < 0) |
| continue; |
| if (!S_ISREG (statbuf.st_mode)) |
| /* We certainly need to reject directories. I'm not quite |
| as sure about FIFOs, sockets, etc., but I kind of doubt |
| that people want to exec() these things. */ |
| continue; |
| break; |
| } |
| if (p == NULL) |
| /* Not found. This must be an error rather than merely passing |
| the file to execlp(), because execlp() would try all the |
| exec()s, causing GDB to get confused. */ |
| error ("Can't find shell %s in PATH", shell_file); |
| |
| shell_file = tryname; |
| } |
| |
| fork_inferior (exec_file, allargs, env, |
| proc_set_exec_trap, procfs_init_inferior, NULL, shell_file); |
| |
| /* We are at the first instruction we care about. */ |
| /* Pedal to the metal... */ |
| |
| proceed ((CORE_ADDR) -1, TARGET_SIGNAL_0, 0); |
| } |
| |
| /* Clean up after the inferior dies. */ |
| |
| static void |
| procfs_mourn_inferior () |
| { |
| struct procinfo *pi; |
| struct procinfo *next_pi; |
| |
| for (pi = procinfo_list; pi; pi = next_pi) |
| { |
| next_pi = pi->next; |
| unconditionally_kill_inferior (pi); |
| } |
| |
| unpush_target (&procfs_ops); |
| generic_mourn_inferior (); |
| } |
| |
| |
| /* Mark our target-struct as eligible for stray "run" and "attach" commands. */ |
| static int |
| procfs_can_run () |
| { |
| /* This variable is controlled by modules that sit atop procfs that may layer |
| their own process structure atop that provided here. sol-thread.c does |
| this because of the Solaris two-level thread model. */ |
| |
| return !procfs_suppress_run; |
| } |
| #ifdef TARGET_HAS_HARDWARE_WATCHPOINTS |
| #ifndef UNIXWARE |
| |
| /* Insert a watchpoint */ |
| int |
| procfs_set_watchpoint (pid, addr, len, rw) |
| int pid; |
| CORE_ADDR addr; |
| int len; |
| int rw; |
| { |
| struct procinfo *pi; |
| prwatch_t wpt; |
| |
| pi = find_procinfo (pid == -1 ? inferior_pid : pid, 0); |
| wpt.pr_vaddr = (caddr_t) addr; |
| wpt.pr_size = len; |
| wpt.pr_wflags = ((rw & 1) ? MA_READ : 0) | ((rw & 2) ? MA_WRITE : 0); |
| if (ioctl (pi->ctl_fd, PIOCSWATCH, &wpt) < 0) |
| { |
| if (errno == E2BIG) |
| return -1; |
| /* Currently it sometimes happens that the same watchpoint gets |
| deleted twice - don't die in this case (FIXME please) */ |
| if (errno == ESRCH && len == 0) |
| return 0; |
| print_sys_errmsg (pi->pathname, errno); |
| error ("PIOCSWATCH failed"); |
| } |
| return 0; |
| } |
| |
| int |
| procfs_stopped_by_watchpoint (pid) |
| int pid; |
| { |
| struct procinfo *pi; |
| short what; |
| short why; |
| |
| pi = find_procinfo (pid == -1 ? inferior_pid : pid, 0); |
| if (pi->prstatus.pr_flags & (PR_STOPPED | PR_ISTOP)) |
| { |
| why = pi->prstatus.pr_why; |
| what = pi->prstatus.pr_what; |
| if (why == PR_FAULTED |
| #if defined (FLTWATCH) && defined (FLTKWATCH) |
| && (what == FLTWATCH || what == FLTKWATCH) |
| #else |
| #ifdef FLTWATCH |
| && (what == FLTWATCH) |
| #endif |
| #ifdef FLTKWATCH |
| && (what == FLTKWATCH) |
| #endif |
| #endif |
| ) |
| return what; |
| } |
| return 0; |
| } |
| #endif /* !UNIXWARE */ |
| #endif /* TARGET_HAS_HARDWARE_WATCHPOINTS */ |
| |
| /* Why is this necessary? Shouldn't dead threads just be removed from the |
| thread database? */ |
| |
| static int |
| procfs_thread_alive (pid) |
| int pid; |
| { |
| struct procinfo *pi, *next_pi; |
| |
| for (pi = procinfo_list; pi; pi = next_pi) |
| { |
| next_pi = pi->next; |
| if (pi->pid == pid) |
| { |
| if (procfs_read_status (pi)) /* alive */ |
| return 1; |
| else |
| /* defunct (exited) */ |
| { |
| close_proc_file (pi); |
| return 0; |
| } |
| } |
| } |
| return 0; |
| } |
| |
| int |
| procfs_first_available () |
| { |
| struct procinfo *pi; |
| |
| for (pi = procinfo_list; pi; pi = pi->next) |
| { |
| if (procfs_read_status (pi)) |
| return pi->pid; |
| } |
| return -1; |
| } |
| |
| int |
| procfs_get_pid_fd (pid) |
| int pid; |
| { |
| struct procinfo *pi = find_procinfo (pid, 1); |
| |
| if (pi == NULL) |
| return -1; |
| |
| return pi->ctl_fd; |
| } |
| |
| /* Send a SIGINT to the process group. This acts just like the user typed a |
| ^C on the controlling terminal. |
| |
| XXX - This may not be correct for all systems. Some may want to use |
| killpg() instead of kill (-pgrp). */ |
| |
| static void |
| procfs_stop () |
| { |
| extern pid_t inferior_process_group; |
| |
| kill (-inferior_process_group, SIGINT); |
| } |
| |
| /* Convert a pid to printable form. */ |
| |
| #ifdef TIDGET |
| char * |
| procfs_pid_to_str (pid) |
| int pid; |
| { |
| static char buf[100]; |
| |
| sprintf (buf, "Kernel thread %d", TIDGET (pid)); |
| |
| return buf; |
| } |
| #endif /* TIDGET */ |
| |
| |
| static void |
| init_procfs_ops () |
| { |
| procfs_ops.to_shortname = "procfs"; |
| procfs_ops.to_longname = "Unix /proc child process"; |
| procfs_ops.to_doc = "Unix /proc child process (started by the \"run\" command)."; |
| procfs_ops.to_open = procfs_open; |
| procfs_ops.to_attach = procfs_attach; |
| procfs_ops.to_detach = procfs_detach; |
| procfs_ops.to_resume = procfs_resume; |
| procfs_ops.to_wait = procfs_wait; |
| procfs_ops.to_fetch_registers = procfs_fetch_registers; |
| procfs_ops.to_store_registers = procfs_store_registers; |
| procfs_ops.to_prepare_to_store = procfs_prepare_to_store; |
| procfs_ops.to_xfer_memory = procfs_xfer_memory; |
| procfs_ops.to_files_info = procfs_files_info; |
| procfs_ops.to_insert_breakpoint = memory_insert_breakpoint; |
| procfs_ops.to_remove_breakpoint = memory_remove_breakpoint; |
| procfs_ops.to_terminal_init = terminal_init_inferior; |
| procfs_ops.to_terminal_inferior = terminal_inferior; |
| procfs_ops.to_terminal_ours_for_output = terminal_ours_for_output; |
| procfs_ops.to_terminal_ours = terminal_ours; |
| procfs_ops.to_terminal_info = child_terminal_info; |
| procfs_ops.to_kill = procfs_kill_inferior; |
| procfs_ops.to_create_inferior = procfs_create_inferior; |
| procfs_ops.to_mourn_inferior = procfs_mourn_inferior; |
| procfs_ops.to_can_run = procfs_can_run; |
| procfs_ops.to_notice_signals = procfs_notice_signals; |
| procfs_ops.to_thread_alive = procfs_thread_alive; |
| procfs_ops.to_stop = procfs_stop; |
| procfs_ops.to_stratum = process_stratum; |
| procfs_ops.to_has_all_memory = 1; |
| procfs_ops.to_has_memory = 1; |
| procfs_ops.to_has_stack = 1; |
| procfs_ops.to_has_registers = 1; |
| procfs_ops.to_has_execution = 1; |
| procfs_ops.to_magic = OPS_MAGIC; |
| } |
| |
| void |
| _initialize_procfs () |
| { |
| #ifdef HAVE_OPTIONAL_PROC_FS |
| char procname[MAX_PROC_NAME_SIZE]; |
| int fd; |
| |
| /* If we have an optional /proc filesystem (e.g. under OSF/1), |
| don't add procfs support if we cannot access the running |
| GDB via /proc. */ |
| sprintf (procname, STATUS_PROC_NAME_FMT, getpid ()); |
| if ((fd = open (procname, O_RDONLY)) < 0) |
| return; |
| close (fd); |
| #endif |
| |
| init_procfs_ops (); |
| add_target (&procfs_ops); |
| |
| add_info ("processes", info_proc, |
| "Show process status information using /proc entry.\n\ |
| Specify process id or use current inferior by default.\n\ |
| Specify keywords for detailed information; default is summary.\n\ |
| Keywords are: `all', `faults', `flags', `id', `mappings', `signals',\n\ |
| `status', `syscalls', and `times'.\n\ |
| Unambiguous abbreviations may be used."); |
| |
| init_syscall_table (); |
| } |