/* Native-dependent code for x86 (i386 and x86-64). Low level functions to implement Oeprating System specific code to manipulate x86 debug registers. Copyright (C) 2009-2019 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 */