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Diffstat (limited to 'gdb/i386fbsd-nat.c')
| -rw-r--r-- | gdb/i386fbsd-nat.c | 105 |
1 files changed, 0 insertions, 105 deletions
diff --git a/gdb/i386fbsd-nat.c b/gdb/i386fbsd-nat.c deleted file mode 100644 index a80d0a0..0000000 --- a/gdb/i386fbsd-nat.c +++ /dev/null @@ -1,105 +0,0 @@ -/* Native-dependent code for FreeBSD/i386. - Copyright 2001, 2002 Free Software Foundation, Inc. - - This file is part of GDB. - - This program is free software; you can redistribute it and/or modify - it under the terms of the GNU General Public License as published by - the Free Software Foundation; either version 2 of the License, or - (at your option) any later version. - - This program is distributed in the hope that it will be useful, - but WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - GNU General Public License for more details. - - You should have received a copy of the GNU General Public License - along with this program; if not, write to the Free Software - Foundation, Inc., 59 Temple Place - Suite 330, - Boston, MA 02111-1307, USA. */ - -#include "defs.h" -#include "inferior.h" -#include "regcache.h" - -#include <sys/types.h> -#include <sys/ptrace.h> -#include <sys/sysctl.h> - -/* Prevent warning from -Wmissing-prototypes. */ -void _initialize_i386fbsd_nat (void); - -/* Resume execution of the inferior process. - If STEP is nonzero, single-step it. - If SIGNAL is nonzero, give it that signal. */ - -void -child_resume (ptid_t ptid, int step, enum target_signal signal) -{ - pid_t pid = ptid_get_pid (ptid); - int request = PT_STEP; - - if (pid == -1) - /* Resume all threads. This only gets used in the non-threaded - case, where "resume all threads" and "resume inferior_ptid" are - the same. */ - pid = ptid_get_pid (inferior_ptid); - - if (!step) - { - unsigned int eflags; - - /* Workaround for a bug in FreeBSD. Make sure that the trace - flag is off when doing a continue. There is a code path - through the kernel which leaves the flag set when it should - have been cleared. If a process has a signal pending (such - as SIGALRM) and we do a PT_STEP, the process never really has - a chance to run because the kernel needs to notify the - debugger that a signal is being sent. Therefore, the process - never goes through the kernel's trap() function which would - normally clear it. */ - - eflags = read_register (PS_REGNUM); - if (eflags & 0x0100) - write_register (PS_REGNUM, eflags & ~0x0100); - - request = PT_CONTINUE; - } - - /* An addres of (caddr_t) 1 tells ptrace to continue from where it - was. (If GDB wanted it to start some other way, we have already - written a new PC value to the child.) */ - if (ptrace (request, pid, (caddr_t) 1, - target_signal_to_host (signal)) == -1) - perror_with_name ("ptrace"); -} - -void -_initialize_i386fbsd_nat (void) -{ - /* FreeBSD provides a kern.ps_strings sysctl that we can use to - locate the sigtramp. That way we can still recognize a sigtramp - if its location is changed in a new kernel. Of course this is - still based on the assumption that the sigtramp is placed - directly under the location where the program arguments and - environment can be found. */ -#ifdef KERN_PS_STRINGS - { - int mib[2]; - int ps_strings; - size_t len; - - extern CORE_ADDR i386fbsd_sigtramp_start; - extern CORE_ADDR i386fbsd_sigtramp_end; - - mib[0] = CTL_KERN; - mib[1] = KERN_PS_STRINGS; - len = sizeof (ps_strings); - if (sysctl (mib, 2, &ps_strings, &len, NULL, 0) == 0) - { - i386fbsd_sigtramp_start = ps_strings - 128; - i386fbsd_sigtramp_end = ps_strings; - } - } -#endif -} |