| /* Native definitions for Intel x86 running DJGPP. |
| Copyright (C) 1997, 1998, 1999 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. */ |
| |
| #define NO_PTRACE_H |
| |
| #include "i386/nm-i386v.h" |
| |
| #define TARGET_HAS_HARDWARE_WATCHPOINTS |
| |
| /* Returns the number of hardware watchpoints of type TYPE that we can |
| set. Value is positive if we can set CNT watchpoints, zero if |
| setting watchpoints of type TYPE is not supported, and negative if |
| CNT is more than the maximum number of watchpoints of type TYPE |
| that we can support. TYPE is one of bp_hardware_watchpoint, |
| bp_read_watchpoint, bp_write_watchpoint, or bp_hardware_breakpoint. |
| CNT is the number of such watchpoints used so far (including this |
| one). OTHERTYPE is non-zero if other types of watchpoints are |
| currently enabled. |
| |
| We always return 1 here because we don't have enough information |
| about possible overlap of addresses that they want to watch. As |
| an extreme example, consider the case where all the watchpoints |
| watch the same address and the same region length: then we can |
| handle a virtually unlimited number of watchpoints, due to debug |
| register sharing implemented via reference counts in go32-nat.c. */ |
| |
| #define TARGET_CAN_USE_HARDWARE_WATCHPOINT(type, cnt, ot) 1 |
| |
| /* Returns non-zero if we can use hardware watchpoints to watch a region |
| whose address is ADDR and whose length is LEN. */ |
| |
| #define TARGET_REGION_OK_FOR_HW_WATCHPOINT(addr,len) \ |
| go32_region_ok_for_watchpoint(addr,len) |
| extern int go32_region_ok_for_watchpoint (CORE_ADDR, int); |
| |
| /* After a watchpoint trap, the PC points to the instruction after the |
| one that caused the trap. Therefore we don't need to step over it. |
| But we do need to reset the status register to avoid another trap. */ |
| |
| #define HAVE_CONTINUABLE_WATCHPOINT |
| |
| #define STOPPED_BY_WATCHPOINT(W) \ |
| go32_stopped_by_watchpoint (inferior_pid, 0) |
| |
| #define target_stopped_data_address() \ |
| go32_stopped_by_watchpoint (inferior_pid, 1) |
| extern CORE_ADDR go32_stopped_by_watchpoint (int, int); |
| |
| /* Use these macros for watchpoint insertion/removal. */ |
| |
| #define target_insert_watchpoint(addr, len, type) \ |
| go32_insert_watchpoint (inferior_pid, addr, len, type) |
| extern int go32_insert_watchpoint (int, CORE_ADDR, int, int); |
| |
| #define target_remove_watchpoint(addr, len, type) \ |
| go32_remove_watchpoint (inferior_pid, addr, len, type) |
| extern int go32_remove_watchpoint (int, CORE_ADDR, int, int); |
| |
| #define target_insert_hw_breakpoint(addr, shadow) \ |
| go32_insert_hw_breakpoint(addr, shadow) |
| extern int go32_insert_hw_breakpoint (CORE_ADDR, void *); |
| |
| #define target_remove_hw_breakpoint(addr, shadow) \ |
| go32_remove_hw_breakpoint(addr, shadow) |
| extern int go32_remove_hw_breakpoint (CORE_ADDR, void *); |
| |
| #define DECR_PC_AFTER_HW_BREAK 0 |