+/* 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 (); }
+};
+