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/* Native-dependent code for AArch64.
Copyright (C) 2011-2023 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 AARCH64_NAT_H
#define AARCH64_NAT_H
#include "breakpoint.h"
#include "nat/aarch64-hw-point.h"
#include "target.h"
/* Hardware-assisted breakpoints and watchpoints. */
/* Initialize platform-independent state for hardware-assisted
breakpoints and watchpoints. */
void aarch64_initialize_hw_point ();
/* Return the debug register state for process PID. If no existing
state is found for this process, return nullptr. */
struct aarch64_debug_reg_state *aarch64_lookup_debug_reg_state (pid_t pid);
/* Return the debug register state for process PID. If no existing
state is found for this process, create new state. */
struct aarch64_debug_reg_state *aarch64_get_debug_reg_state (pid_t pid);
/* Remove any existing per-process debug state for process PID. */
void aarch64_remove_debug_reg_state (pid_t pid);
/* Helper for the "stopped_data_address" target method. Returns TRUE
if a hardware watchpoint trap at ADDR_TRAP matches a set
watchpoint. The address of the matched watchpoint is returned in
*ADDR_P. */
bool aarch64_stopped_data_address (const struct aarch64_debug_reg_state *state,
CORE_ADDR addr_trap, CORE_ADDR *addr_p);
/* Helper functions used by aarch64_nat_target below. See their
definitions. */
int aarch64_can_use_hw_breakpoint (enum bptype type, int cnt, int othertype);
int aarch64_insert_watchpoint (CORE_ADDR addr, int len,
enum target_hw_bp_type type,
struct expression *cond);
int aarch64_remove_watchpoint (CORE_ADDR addr, int len,
enum target_hw_bp_type type,
struct expression *cond);
int aarch64_insert_hw_breakpoint (struct gdbarch *gdbarch,
struct bp_target_info *bp_tgt);
int aarch64_remove_hw_breakpoint (struct gdbarch *gdbarch,
struct bp_target_info *bp_tgt);
int aarch64_stopped_by_hw_breakpoint ();
/* Convenience template mixin used to add aarch64 watchpoints support to a
target. */
template <typename BaseTarget>
struct aarch64_nat_target : public BaseTarget
{
/* Hook in common aarch64 hardware watchpoints/breakpoints support. */
int can_use_hw_breakpoint (enum bptype type, int cnt, int othertype) override
{ return aarch64_can_use_hw_breakpoint (type, cnt, othertype); }
int region_ok_for_hw_watchpoint (CORE_ADDR addr, int len) override
{ return aarch64_region_ok_for_watchpoint (addr, len); }
int insert_watchpoint (CORE_ADDR addr, int len,
enum target_hw_bp_type type,
struct expression *cond) override
{ return aarch64_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 aarch64_remove_watchpoint (addr, len, type, cond); }
int insert_hw_breakpoint (struct gdbarch *gdbarch,
struct bp_target_info *bp_tgt) override
{ return aarch64_insert_hw_breakpoint (gdbarch, bp_tgt); }
int remove_hw_breakpoint (struct gdbarch *gdbarch,
struct bp_target_info *bp_tgt) override
{ return aarch64_remove_hw_breakpoint (gdbarch, bp_tgt); }
bool watchpoint_addr_within_range (CORE_ADDR addr, CORE_ADDR start,
int length) override
{ return start <= addr && start + length - 1 >= addr; }
};
#endif /* AARCH64_NAT_H */
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