aarch64-linux-hw-point.c File Reference

#include "common-defs.h"
#include "break-common.h"
#include "common-regcache.h"
#include "nat/linux-nat.h"
#include "aarch64-linux-hw-point.h"
#include <sys/uio.h>
#include <asm/ptrace.h>
#include <sys/ptrace.h>
#include <elf.h>

Go to the source code of this file.

Classes
struct	aarch64_dr_update_callback_param

Functions
unsigned int	aarch64_watchpoint_length (unsigned int ctrl)
static unsigned int	aarch64_point_encode_ctrl_reg (enum target_hw_bp_type type, int len)
static int	aarch64_point_is_aligned (int is_watchpoint, CORE_ADDR addr, int len)
static void	aarch64_align_watchpoint (CORE_ADDR addr, int len, CORE_ADDR *aligned_addr_p, int *aligned_len_p, CORE_ADDR *next_addr_p, int *next_len_p)
static int	debug_reg_change_callback (struct lwp_info *lwp, void *ptr)
static void	aarch64_notify_debug_reg_change (const struct aarch64_debug_reg_state *state, int is_watchpoint, unsigned int idx)
static int	aarch64_dr_state_insert_one_point (struct aarch64_debug_reg_state *state, enum target_hw_bp_type type, CORE_ADDR addr, int len)
static int	aarch64_dr_state_remove_one_point (struct aarch64_debug_reg_state *state, enum target_hw_bp_type type, CORE_ADDR addr, int len)
int	aarch64_handle_breakpoint (enum target_hw_bp_type type, CORE_ADDR addr, int len, int is_insert, struct aarch64_debug_reg_state *state)
static int	aarch64_handle_aligned_watchpoint (enum target_hw_bp_type type, CORE_ADDR addr, int len, int is_insert, struct aarch64_debug_reg_state *state)
static int	aarch64_handle_unaligned_watchpoint (enum target_hw_bp_type type, CORE_ADDR addr, int len, int is_insert, struct aarch64_debug_reg_state *state)
int	aarch64_handle_watchpoint (enum target_hw_bp_type type, CORE_ADDR addr, int len, int is_insert, struct aarch64_debug_reg_state *state)
void	aarch64_linux_set_debug_regs (const struct aarch64_debug_reg_state *state, int tid, int watchpoint)
void	aarch64_show_debug_reg_state (struct aarch64_debug_reg_state *state, const char *func, CORE_ADDR addr, int len, enum target_hw_bp_type type)
void	aarch64_linux_get_debug_reg_capacity (int tid)
int	aarch64_linux_region_ok_for_watchpoint (CORE_ADDR addr, int len)

Variables
int	aarch64_num_bp_regs
int	aarch64_num_wp_regs

Function Documentation

aarch64_align_watchpoint()

static void aarch64_align_watchpoint ( CORE_ADDR  addr, int  len, CORE_ADDR *  aligned_addr_p, int *  aligned_len_p, CORE_ADDR *  next_addr_p, int *  next_len_p  )

static

Definition at line 183 of file aarch64-linux-hw-point.c.

References AARCH64_HWP_ALIGNMENT, AARCH64_HWP_MAX_LEN_PER_REG, gdb_assert, and offset.

Referenced by aarch64_handle_unaligned_watchpoint().

aarch64_dr_state_insert_one_point()

static int aarch64_dr_state_insert_one_point ( struct aarch64_debug_reg_state *  state, enum target_hw_bp_type  type, CORE_ADDR  addr, int  len  )

static

Definition at line 331 of file aarch64-linux-hw-point.c.

References aarch64_notify_debug_reg_change(), aarch64_num_bp_regs, aarch64_num_wp_regs, aarch64_point_encode_ctrl_reg(), aarch64_point_is_aligned(), aarch64_debug_reg_state::dr_addr_bp, aarch64_debug_reg_state::dr_addr_wp, aarch64_debug_reg_state::dr_ctrl_bp, aarch64_debug_reg_state::dr_ctrl_wp, dr_ref_count, aarch64_debug_reg_state::dr_ref_count_bp, aarch64_debug_reg_state::dr_ref_count_wp, gdb_assert, hw_execute, aarch64_dr_update_callback_param::idx, and is_watchpoint().

Referenced by aarch64_handle_aligned_watchpoint(), aarch64_handle_breakpoint(), and aarch64_handle_unaligned_watchpoint().

aarch64_dr_state_remove_one_point()

static int aarch64_dr_state_remove_one_point ( struct aarch64_debug_reg_state *  state, enum target_hw_bp_type  type, CORE_ADDR  addr, int  len  )

static

Definition at line 404 of file aarch64-linux-hw-point.c.

References aarch64_notify_debug_reg_change(), aarch64_num_bp_regs, aarch64_num_wp_regs, aarch64_point_encode_ctrl_reg(), aarch64_debug_reg_state::dr_addr_bp, aarch64_debug_reg_state::dr_addr_wp, aarch64_debug_reg_state::dr_ctrl_bp, aarch64_debug_reg_state::dr_ctrl_wp, dr_ref_count, aarch64_debug_reg_state::dr_ref_count_bp, aarch64_debug_reg_state::dr_ref_count_wp, gdb_assert, hw_execute, and is_watchpoint().

Referenced by aarch64_handle_aligned_watchpoint(), aarch64_handle_breakpoint(), and aarch64_handle_unaligned_watchpoint().

aarch64_handle_aligned_watchpoint()

static int aarch64_handle_aligned_watchpoint ( enum target_hw_bp_type  type, CORE_ADDR  addr, int  len, int  is_insert, struct aarch64_debug_reg_state *  state  )

static

Definition at line 485 of file aarch64-linux-hw-point.c.

References aarch64_dr_state_insert_one_point(), and aarch64_dr_state_remove_one_point().

Referenced by aarch64_handle_watchpoint().

aarch64_handle_breakpoint()

int aarch64_handle_breakpoint	(	enum target_hw_bp_type	type,
		CORE_ADDR	addr,
		int	len,
		int	is_insert,
		struct aarch64_debug_reg_state *	state
	)

Definition at line 458 of file aarch64-linux-hw-point.c.

References aarch64_dr_state_insert_one_point(), aarch64_dr_state_remove_one_point(), and aarch64_point_is_aligned().

Referenced by aarch64_linux_insert_hw_breakpoint(), and aarch64_linux_remove_hw_breakpoint().

aarch64_handle_unaligned_watchpoint()

static int aarch64_handle_unaligned_watchpoint ( enum target_hw_bp_type  type, CORE_ADDR  addr, int  len, int  is_insert, struct aarch64_debug_reg_state *  state  )

static

Definition at line 503 of file aarch64-linux-hw-point.c.

References aarch64_align_watchpoint(), aarch64_dr_state_insert_one_point(), aarch64_dr_state_remove_one_point(), core_addr_to_string_nz(), debug_printf(), and show_debug_regs.

Referenced by aarch64_handle_watchpoint().

aarch64_handle_watchpoint()

int aarch64_handle_watchpoint	(	enum target_hw_bp_type	type,
		CORE_ADDR	addr,
		int	len,
		int	is_insert,
		struct aarch64_debug_reg_state *	state
	)

Definition at line 539 of file aarch64-linux-hw-point.c.

References aarch64_handle_aligned_watchpoint(), aarch64_handle_unaligned_watchpoint(), and aarch64_point_is_aligned().

Referenced by aarch64_linux_insert_watchpoint(), and aarch64_linux_remove_watchpoint().

aarch64_linux_get_debug_reg_capacity()

void aarch64_linux_get_debug_reg_capacity

(

int

tid

)

Definition at line 623 of file aarch64-linux-hw-point.c.

References _, AARCH64_DEBUG_ARCH, AARCH64_DEBUG_ARCH_V8, AARCH64_DEBUG_ARCH_V8_1, AARCH64_DEBUG_ARCH_V8_2, AARCH64_DEBUG_NUM_SLOTS, AARCH64_HBP_MAX_NUM, AARCH64_HWP_MAX_NUM, aarch64_num_bp_regs, aarch64_num_wp_regs, ptrace(), PTRACE_GETREGSET, selftests::ptid::tid, and warning().

Referenced by aarch64_linux_child_post_startup_inferior().

aarch64_linux_region_ok_for_watchpoint()

int aarch64_linux_region_ok_for_watchpoint	(	CORE_ADDR	addr,
		int	len
	)

Definition at line 680 of file aarch64-linux-hw-point.c.

References AARCH64_HWP_MAX_LEN_PER_REG, and aarch64_num_wp_regs.

Referenced by aarch64_linux_region_ok_for_hw_watchpoint().

aarch64_linux_set_debug_regs()

void aarch64_linux_set_debug_regs	(	const struct aarch64_debug_reg_state *	state,
		int	tid,
		int	watchpoint
	)

Definition at line 555 of file aarch64-linux-hw-point.c.

References _, aarch64_num_bp_regs, aarch64_num_wp_regs, aarch64_debug_reg_state::dr_addr_bp, aarch64_debug_reg_state::dr_addr_wp, aarch64_debug_reg_state::dr_ctrl_bp, aarch64_debug_reg_state::dr_ctrl_wp, error(), memset(), ptrace(), PTRACE_SETREGSET, and selftests::ptid::tid.

Referenced by aarch64_linux_prepare_to_resume().

aarch64_notify_debug_reg_change()

static void aarch64_notify_debug_reg_change ( const struct aarch64_debug_reg_state *  state, int  is_watchpoint, unsigned int  idx  )

static

Definition at line 315 of file aarch64-linux-hw-point.c.

References current_lwp_ptid(), debug_reg_change_callback(), aarch64_dr_update_callback_param::idx, aarch64_dr_update_callback_param::is_watchpoint, is_watchpoint(), iterate_over_lwps(), pid_to_ptid(), and ptid_get_pid().

Referenced by aarch64_dr_state_insert_one_point(), and aarch64_dr_state_remove_one_point().

aarch64_point_encode_ctrl_reg()

static unsigned int aarch64_point_encode_ctrl_reg ( enum target_hw_bp_type  type, int  len  )

static

Definition at line 67 of file aarch64-linux-hw-point.c.

References _, hw_access, hw_execute, hw_read, hw_write, and perror_with_name().

Referenced by aarch64_dr_state_insert_one_point(), and aarch64_dr_state_remove_one_point().

aarch64_point_is_aligned()

static int aarch64_point_is_aligned ( int  is_watchpoint, CORE_ADDR  addr, int  len  )

static

Definition at line 114 of file aarch64-linux-hw-point.c.

References AARCH64_HBP_ALIGNMENT, AARCH64_HWP_ALIGNMENT, current_lwp_ptid(), get_thread_regcache_for_ptid(), is_watchpoint(), and regcache_register_size().

Referenced by aarch64_dr_state_insert_one_point(), aarch64_handle_breakpoint(), and aarch64_handle_watchpoint().

aarch64_show_debug_reg_state()

void aarch64_show_debug_reg_state	(	struct aarch64_debug_reg_state *	state,
		const char *	func,
		CORE_ADDR	addr,
		int	len,
		enum target_hw_bp_type	type
	)

Definition at line 589 of file aarch64-linux-hw-point.c.

References aarch64_num_bp_regs, aarch64_num_wp_regs, core_addr_to_string_nz(), debug_printf(), aarch64_debug_reg_state::dr_addr_bp, aarch64_debug_reg_state::dr_addr_wp, aarch64_debug_reg_state::dr_ctrl_bp, aarch64_debug_reg_state::dr_ctrl_wp, aarch64_debug_reg_state::dr_ref_count_bp, aarch64_debug_reg_state::dr_ref_count_wp, func, hw_access, hw_execute, hw_read, and hw_write.

Referenced by aarch64_linux_insert_hw_breakpoint(), aarch64_linux_insert_watchpoint(), aarch64_linux_remove_hw_breakpoint(), and aarch64_linux_remove_watchpoint().

aarch64_watchpoint_length()

unsigned int aarch64_watchpoint_length

(

unsigned int

ctrl

)

Definition at line 45 of file aarch64-linux-hw-point.c.

References DR_CONTROL_LENGTH.

Referenced by aarch64_linux_stopped_data_address().

debug_reg_change_callback()

static int debug_reg_change_callback ( struct lwp_info *  lwp, void *  ptr  )

static

Definition at line 254 of file aarch64-linux-hw-point.c.

References aarch64_num_bp_regs, aarch64_num_wp_regs, debug_printf(), arch_lwp_info::dr_changed_bp, arch_lwp_info::dr_changed_wp, DR_MARK_N_CHANGED, gdb_assert, aarch64_dr_update_callback_param::idx, aarch64_dr_update_callback_param::is_watchpoint, is_watchpoint(), linux_stop_lwp(), selftests::ptid::lwp, lwp_arch_private_info(), lwp_is_stopped(), lwp_set_arch_private_info(), phex(), ptid_get_lwp(), ptid_of_lwp(), show_debug_regs, selftests::ptid::tid, and XCNEW.

Referenced by aarch64_notify_debug_reg_change().

Variable Documentation

aarch64_num_bp_regs

int aarch64_num_bp_regs

Definition at line 34 of file aarch64-linux-hw-point.c.

Referenced by aarch64_dr_state_insert_one_point(), aarch64_dr_state_remove_one_point(), aarch64_linux_can_use_hw_breakpoint(), aarch64_linux_get_debug_reg_capacity(), aarch64_linux_new_thread(), aarch64_linux_set_debug_regs(), aarch64_show_debug_reg_state(), and debug_reg_change_callback().

aarch64_num_wp_regs

int aarch64_num_wp_regs

Definition at line 35 of file aarch64-linux-hw-point.c.

Referenced by aarch64_dr_state_insert_one_point(), aarch64_dr_state_remove_one_point(), aarch64_linux_can_use_hw_breakpoint(), aarch64_linux_get_debug_reg_capacity(), aarch64_linux_new_thread(), aarch64_linux_region_ok_for_watchpoint(), aarch64_linux_set_debug_regs(), aarch64_linux_stopped_data_address(), aarch64_show_debug_reg_state(), and debug_reg_change_callback().