gdb/config/i386/nm-i386sol2.h

   1 /* Native support for i386 running Solaris 2.
   2    Copyright 1998, 1999, 2000 Free Software Foundation, Inc.
   3
   4    This file is part of GDB.
   5
   6    This program is free software; you can redistribute it and/or modify
   7    it under the terms of the GNU General Public License as published by
   8    the Free Software Foundation; either version 2 of the License, or
   9    (at your option) any later version.
  10
  11    This program is distributed in the hope that it will be useful,
  12    but WITHOUT ANY WARRANTY; without even the implied warranty of
  13    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14    GNU General Public License for more details.
  15
  16    You should have received a copy of the GNU General Public License
  17    along with this program; if not, write to the Free Software
  18    Foundation, Inc., 59 Temple Place - Suite 330,
  19    Boston, MA 02111-1307, USA.  */
  20
  21 /* Use SVR4 style shared library support */
  22
  23 #include "solib.h"
  24
  25 /* SVR4 has /proc support, so use it instead of ptrace. */
  26
  27 #define USE_PROC_FS
  28
  29 #ifdef NEW_PROC_API     /* Solaris 6 and above can do HW watchpoints */
  30
  31 #define TARGET_HAS_HARDWARE_WATCHPOINTS
  32
  33 /* The man page for proc4 on solaris 6 and 7 says that the system
  34    can support "thousands" of hardware watchpoints, but gives no
  35    method for finding out how many.  So just tell GDB 'yes'.  */
  36 #define TARGET_CAN_USE_HARDWARE_WATCHPOINT(TYPE, CNT, OT) 1
  37 #define TARGET_REGION_SIZE_OK_FOR_HW_WATCHPOINT(SIZE) 1
  38
  39 /* When a hardware watchpoint fires off the PC will be left at the
  40    instruction following the one which caused the watchpoint.
  41    It will *NOT* be necessary for GDB to step over the watchpoint. */
  42 #define HAVE_CONTINUABLE_WATCHPOINT 1
  43
  44 /* Solaris x86 2.6 and 2.7 targets have a kernel bug when stepping
  45    over an instruction that causes a page fault without triggering
  46    a hardware watchpoint. The kernel properly notices that it shouldn't
  47    stop, because the hardware watchpoint is not triggered, but it forgets
  48    the step request and continues the program normally.
  49    Work around the problem by removing hardware watchpoints if a step is
  50    requested, GDB will check for a hardware watchpoint trigger after the
  51    step anyway.  */
  52 #define CANNOT_STEP_HW_WATCHPOINTS
  53
  54 extern int procfs_stopped_by_watchpoint (ptid_t);
  55 #define STOPPED_BY_WATCHPOINT(W) \
  56   procfs_stopped_by_watchpoint(inferior_ptid)
  57
  58 /* Use these macros for watchpoint insertion/deletion.  */
  59 /* type can be 0: write watch, 1: read watch, 2: access watch (read/write) */
  60
  61 extern int procfs_set_watchpoint (ptid_t, CORE_ADDR, int, int, int);
  62 #define target_insert_watchpoint(ADDR, LEN, TYPE) \
  63         procfs_set_watchpoint (inferior_ptid, ADDR, LEN, TYPE, 1)
  64 #define target_remove_watchpoint(ADDR, LEN, TYPE) \
  65         procfs_set_watchpoint (inferior_ptid, ADDR, 0, 0, 0)
  66
  67 #endif /* NEW_PROC_API */