| /* Native-dependent code for x86 (i386 and x86-64). |
| |
| Low level functions to implement Operating System specific |
| code to manipulate x86 debug registers. |
| |
| Copyright (C) 2009-2021 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 3 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, see <http://www.gnu.org/licenses/>. */ |
| |
| #ifndef X86_NAT_H |
| #define X86_NAT_H 1 |
| |
| #include "breakpoint.h" |
| #include "nat/x86-dregs.h" |
| #include "target.h" |
| |
| /* Hardware-assisted breakpoints and watchpoints. */ |
| |
| /* Use this function to set x86_dr_low debug_register_length field |
| rather than setting it directly to check that the length is only |
| set once. It also enables the 'maint set/show show-debug-regs' |
| command. */ |
| |
| extern void x86_set_debug_register_length (int len); |
| |
| /* Use this function to reset the x86-nat.c debug register state. */ |
| |
| extern void x86_cleanup_dregs (void); |
| |
| /* Called whenever GDB is no longer debugging process PID. It deletes |
| data structures that keep track of debug register state. */ |
| |
| extern void x86_forget_process (pid_t pid); |
| |
| /* Helper functions used by x86_nat_target below. See their |
| definitions. */ |
| |
| extern int x86_can_use_hw_breakpoint (enum bptype type, int cnt, int othertype); |
| extern int x86_region_ok_for_hw_watchpoint (CORE_ADDR addr, int len); |
| extern int x86_stopped_by_watchpoint (); |
| extern int x86_stopped_data_address (CORE_ADDR *addr_p); |
| extern int x86_insert_watchpoint (CORE_ADDR addr, int len, |
| enum target_hw_bp_type type, |
| struct expression *cond); |
| extern int x86_remove_watchpoint (CORE_ADDR addr, int len, |
| enum target_hw_bp_type type, |
| struct expression *cond); |
| extern int x86_insert_hw_breakpoint (struct gdbarch *gdbarch, |
| struct bp_target_info *bp_tgt); |
| extern int x86_remove_hw_breakpoint (struct gdbarch *gdbarch, |
| struct bp_target_info *bp_tgt); |
| extern int x86_stopped_by_hw_breakpoint (); |
| |
| /* Convenience template mixin used to add x86 watchpoints support to a |
| target. */ |
| |
| template <typename BaseTarget> |
| struct x86_nat_target : public BaseTarget |
| { |
| /* Hook in the x86 hardware watchpoints/breakpoints support. */ |
| |
| int can_use_hw_breakpoint (enum bptype type, int cnt, int othertype) override |
| { return x86_can_use_hw_breakpoint (type, cnt, othertype); } |
| |
| int region_ok_for_hw_watchpoint (CORE_ADDR addr, int len) override |
| { return x86_region_ok_for_hw_watchpoint (addr, len); } |
| |
| int insert_watchpoint (CORE_ADDR addr, int len, |
| enum target_hw_bp_type type, |
| struct expression *cond) override |
| { return x86_insert_watchpoint (addr, len, type, cond); } |
| |
| int remove_watchpoint (CORE_ADDR addr, int len, |
| enum target_hw_bp_type type, |
| struct expression *cond) override |
| { return x86_remove_watchpoint (addr, len, type, cond); } |
| |
| int insert_hw_breakpoint (struct gdbarch *gdbarch, |
| struct bp_target_info *bp_tgt) override |
| { return x86_insert_hw_breakpoint (gdbarch, bp_tgt); } |
| |
| int remove_hw_breakpoint (struct gdbarch *gdbarch, |
| struct bp_target_info *bp_tgt) override |
| { return x86_remove_hw_breakpoint (gdbarch, bp_tgt); } |
| |
| bool stopped_by_watchpoint () override |
| { return x86_stopped_by_watchpoint (); } |
| |
| bool stopped_data_address (CORE_ADDR *addr_p) override |
| { return x86_stopped_data_address (addr_p); } |
| |
| /* A target must provide an implementation of the |
| "supports_stopped_by_hw_breakpoint" target method before this |
| callback will be used. */ |
| bool stopped_by_hw_breakpoint () override |
| { return x86_stopped_by_hw_breakpoint (); } |
| }; |
| |
| #endif /* X86_NAT_H */ |