#include "defs.h"
#include "i386-nat.h"
#include "breakpoint.h"
#include "command.h"
#include "gdbcmd.h"
#include "target.h"
#include "gdb_assert.h"
#include "inferior.h"

Classes
struct	i386_process_info
Defines
#define	TARGET_HAS_DR_LEN_8 (i386_dr_low.debug_register_length == 8)
#define	DR_CONTROL_SHIFT 16
#define	DR_CONTROL_SIZE 4
#define	DR_RW_EXECUTE (0x0) /* Break on instruction execution. */
#define	DR_RW_WRITE (0x1) /* Break on data writes. */
#define	DR_RW_READ (0x3) /* Break on data reads or writes. */
#define	DR_RW_IORW (0x2) /* Break on I/O reads or writes. */
#define	DR_LEN_1 (0x0 << 2) /* 1-byte region watch or breakpoint. */
#define	DR_LEN_2 (0x1 << 2) /* 2-byte region watch. */
#define	DR_LEN_4 (0x3 << 2) /* 4-byte region watch. */
#define	DR_LEN_8 (0x2 << 2) /* 8-byte region watch (AMD64). */
#define	DR_LOCAL_ENABLE_SHIFT 0 /* Extra shift to the local enable bit. */
#define	DR_GLOBAL_ENABLE_SHIFT 1 /* Extra shift to the global enable bit. */
#define	DR_ENABLE_SIZE 2 /* Two enable bits per debug register. */
#define	DR_LOCAL_SLOWDOWN (0x100)
#define	DR_GLOBAL_SLOWDOWN (0x200)
#define	DR_CONTROL_RESERVED (0xFC00)
#define	I386_DR_CONTROL_MASK (~DR_CONTROL_RESERVED)
#define	I386_DR_VACANT(state, i) (((state)->dr_control_mirror & (3 << (DR_ENABLE_SIZE * (i)))) == 0)
#define	I386_DR_LOCAL_ENABLE(state, i)
#define	I386_DR_GLOBAL_ENABLE(state, i)
#define	I386_DR_DISABLE(state, i)
#define	I386_DR_SET_RW_LEN(state, i, rwlen)
#define	I386_DR_GET_RW_LEN(dr7, i)
#define	I386_DR_WATCH_MASK(i) (1 << (i))
#define	I386_DR_WATCH_HIT(dr6, i) ((dr6) & (1 << (i)))
#define	ALL_DEBUG_REGISTERS(i) for (i = 0; i < DR_NADDR; i++)
Enumerations
enum	i386_wp_op_t { WP_INSERT, WP_REMOVE, WP_COUNT }
Functions
static struct i386_process_info *	i386_find_process_pid (pid_t pid)
static struct i386_process_info *	i386_add_process (pid_t pid)
static struct i386_process_info *	i386_process_info_get (pid_t pid)
struct i386_debug_reg_state *	i386_debug_reg_state (pid_t pid)
void	i386_forget_process (pid_t pid)
static unsigned	i386_length_and_rw_bits (int len, enum target_hw_bp_type type)
static int	i386_insert_aligned_watchpoint (struct i386_debug_reg_state *state, CORE_ADDR addr, unsigned len_rw_bits)
static int	i386_remove_aligned_watchpoint (struct i386_debug_reg_state *state, CORE_ADDR addr, unsigned len_rw_bits)
static int	i386_handle_nonaligned_watchpoint (struct i386_debug_reg_state *state, i386_wp_op_t what, CORE_ADDR addr, int len, enum target_hw_bp_type type)
void	i386_cleanup_dregs (void)
static void	i386_show_dr (struct i386_debug_reg_state state, const char func, CORE_ADDR addr, int len, enum target_hw_bp_type type)
static void	i386_update_inferior_debug_regs (struct i386_debug_reg_state *new_state)
static int	i386_insert_watchpoint (CORE_ADDR addr, int len, int type, struct expression *cond)
static int	i386_remove_watchpoint (CORE_ADDR addr, int len, int type, struct expression *cond)
static int	i386_region_ok_for_watchpoint (CORE_ADDR addr, int len)
static int	i386_stopped_data_address (struct target_ops ops, CORE_ADDR addr_p)
static int	i386_stopped_by_watchpoint (void)
static int	i386_insert_hw_breakpoint (struct gdbarch gdbarch, struct bp_target_info bp_tgt)
static int	i386_remove_hw_breakpoint (struct gdbarch gdbarch, struct bp_target_info bp_tgt)
static int	i386_can_use_hw_breakpoint (int type, int cnt, int othertype)
static void	add_show_debug_regs_command (void)
void	i386_use_watchpoints (struct target_ops *t)
void	i386_set_debug_register_length (int len)
Variables
struct i386_dr_low_type	i386_dr_low
static struct i386_process_info *	i386_process_list = NULL
static int	maint_show_dr

Define Documentation

#define ALL_DEBUG_REGISTERS ( i ) for (i = 0; i < DR_NADDR; i++)

Definition at line 154 of file i386-nat.c.

Referenced by i386_insert_aligned_watchpoint(), i386_remove_aligned_watchpoint(), i386_show_dr(), i386_stopped_data_address(), and i386_update_inferior_debug_regs().

#define DR_CONTROL_RESERVED (0xFC00)

Definition at line 100 of file i386-nat.c.

#define DR_CONTROL_SHIFT 16

Definition at line 49 of file i386-nat.c.

#define DR_CONTROL_SIZE 4

Definition at line 51 of file i386-nat.c.

#define DR_ENABLE_SIZE 2 /* Two enable bits per debug register. */

Definition at line 85 of file i386-nat.c.

#define DR_GLOBAL_ENABLE_SHIFT 1 /* Extra shift to the global enable bit. */

Definition at line 84 of file i386-nat.c.

#define DR_GLOBAL_SLOWDOWN (0x200)

Definition at line 93 of file i386-nat.c.

#define DR_LEN_1 (0x0 << 2) /* 1-byte region watch or breakpoint. */

Definition at line 67 of file i386-nat.c.

Referenced by i386_length_and_rw_bits().

#define DR_LEN_2 (0x1 << 2) /* 2-byte region watch. */

Definition at line 68 of file i386-nat.c.

Referenced by i386_length_and_rw_bits().

#define DR_LEN_4 (0x3 << 2) /* 4-byte region watch. */

Definition at line 69 of file i386-nat.c.

Referenced by i386_length_and_rw_bits().

#define DR_LEN_8 (0x2 << 2) /* 8-byte region watch (AMD64). */

Definition at line 70 of file i386-nat.c.

Referenced by i386_length_and_rw_bits().

#define DR_LOCAL_ENABLE_SHIFT 0 /* Extra shift to the local enable bit. */

Definition at line 83 of file i386-nat.c.

#define DR_LOCAL_SLOWDOWN (0x100)

Definition at line 92 of file i386-nat.c.

Referenced by i386_insert_aligned_watchpoint().

#define DR_RW_EXECUTE (0x0) /* Break on instruction execution. */

Definition at line 54 of file i386-nat.c.

Referenced by i386_length_and_rw_bits().

#define DR_RW_IORW (0x2) /* Break on I/O reads or writes. */

Definition at line 62 of file i386-nat.c.

Referenced by i386_length_and_rw_bits().

#define DR_RW_READ (0x3) /* Break on data reads or writes. */

Definition at line 56 of file i386-nat.c.

Referenced by i386_length_and_rw_bits().

#define DR_RW_WRITE (0x1) /* Break on data writes. */

Definition at line 55 of file i386-nat.c.

Referenced by i386_length_and_rw_bits().

#define I386_DR_CONTROL_MASK (~DR_CONTROL_RESERVED)

Definition at line 105 of file i386-nat.c.

Referenced by i386_insert_aligned_watchpoint().

#define I386_DR_DISABLE	(	state,
		i
	)

Value:

do { \
    (state)->dr_control_mirror &= \
      ~(3 << (DR_ENABLE_SIZE * (i))); \
  } while (0)

Definition at line 127 of file i386-nat.c.

Referenced by i386_remove_aligned_watchpoint().

#define I386_DR_GET_RW_LEN	(	dr7,
		i
	)

Value:

(((dr7) \
    >> (DR_CONTROL_SHIFT + DR_CONTROL_SIZE * (i))) & 0x0f)

Definition at line 143 of file i386-nat.c.

Referenced by i386_insert_aligned_watchpoint(), i386_remove_aligned_watchpoint(), and i386_stopped_data_address().

#define I386_DR_GLOBAL_ENABLE	(	state,
		i
	)

Value:

do { \
    (state)->dr_control_mirror |= \
      (1 << (DR_GLOBAL_ENABLE_SHIFT + DR_ENABLE_SIZE * (i))); \
  } while (0)

Definition at line 120 of file i386-nat.c.

#define I386_DR_LOCAL_ENABLE	(	state,
		i
	)

Value:

do { \
    (state)->dr_control_mirror |= \
      (1 << (DR_LOCAL_ENABLE_SHIFT + DR_ENABLE_SIZE * (i))); \
  } while (0)

Definition at line 113 of file i386-nat.c.

Referenced by i386_insert_aligned_watchpoint().

#define I386_DR_SET_RW_LEN	(	state,
		i,
		rwlen
	)

Value:

do { \
    (state)->dr_control_mirror &= \
      ~(0x0f << (DR_CONTROL_SHIFT + DR_CONTROL_SIZE * (i))); \
    (state)->dr_control_mirror |= \
      ((rwlen) << (DR_CONTROL_SHIFT + DR_CONTROL_SIZE * (i))); \
  } while (0)

Definition at line 134 of file i386-nat.c.

Referenced by i386_insert_aligned_watchpoint().

#define I386_DR_VACANT	(	state,
		i
	)	(((state)->dr_control_mirror & (3 << (DR_ENABLE_SIZE * (i)))) == 0)

Definition at line 109 of file i386-nat.c.

Referenced by i386_insert_aligned_watchpoint(), i386_remove_aligned_watchpoint(), and i386_update_inferior_debug_regs().

#define I386_DR_WATCH_HIT	(	dr6,
		i
	)	((dr6) & (1 << (i)))

Definition at line 151 of file i386-nat.c.

Referenced by i386_stopped_data_address().

#define I386_DR_WATCH_MASK ( i ) (1 << (i))

Definition at line 148 of file i386-nat.c.

#define TARGET_HAS_DR_LEN_8 (i386_dr_low.debug_register_length == 8)

Definition at line 44 of file i386-nat.c.

Referenced by i386_handle_nonaligned_watchpoint(), i386_insert_watchpoint(), i386_length_and_rw_bits(), and i386_remove_watchpoint().

Enumeration Type Documentation

enum i386_wp_op_t

Enumerator:

WP_INSERT
WP_REMOVE
WP_COUNT

Definition at line 258 of file i386-nat.c.

Function Documentation

static void add_show_debug_regs_command ( void ) [static]

Definition at line 840 of file i386-nat.c.

References _, add_setshow_boolean_cmd(), class_maintenance, maint_show_dr, maintenance_set_cmdlist, and maintenance_show_cmdlist.

Referenced by i386_set_debug_register_length().

static struct i386_process_info* i386_add_process ( pid_t pid ) [static, read]

Definition at line 193 of file i386-nat.c.

References i386_process_list, i386_process_info::next, i386_process_info::pid, and xcalloc().

Referenced by i386_process_info_get().

static int i386_can_use_hw_breakpoint	(	int	type,
		int	cnt,
		int	othertype
	)		`[static]`

Definition at line 834 of file i386-nat.c.

Referenced by i386_use_watchpoints().

void i386_cleanup_dregs ( void )

Definition at line 302 of file i386-nat.c.

References i386_forget_process(), inferior_ptid, and ptid_get_pid().

Referenced by amd64_linux_child_post_startup_inferior(), amd64fbsd_mourn_inferior(), go32_mourn_inferior(), i386_linux_child_post_startup_inferior(), windows_detach(), and windows_mourn_inferior().

struct i386_debug_reg_state* i386_debug_reg_state ( pid_t pid ) [read]

Definition at line 224 of file i386-nat.c.

References i386_process_info_get(), and i386_process_info::state.

Referenced by amd64_linux_new_fork(), amd64_linux_prepare_to_resume(), i386_insert_hw_breakpoint(), i386_insert_watchpoint(), i386_linux_new_fork(), i386_linux_prepare_to_resume(), i386_region_ok_for_watchpoint(), i386_remove_hw_breakpoint(), i386_remove_watchpoint(), i386_stopped_data_address(), and i386_update_inferior_debug_regs().

static struct i386_process_info* i386_find_process_pid ( pid_t pid ) [static, read]

Definition at line 178 of file i386-nat.c.

References i386_process_info::next, and i386_process_info::pid.

Referenced by i386_process_info_get().

void i386_forget_process ( pid_t pid )

Definition at line 232 of file i386-nat.c.

References i386_process_list, i386_process_info::next, i386_process_info::pid, and xfree().

Referenced by _initialize_amd64_linux_nat(), _initialize_i386_linux_nat(), and i386_cleanup_dregs().

static int i386_handle_nonaligned_watchpoint	(	struct i386_debug_reg_state *	state,
		i386_wp_op_t	what,
		CORE_ADDR	addr,
		int	len,
		enum target_hw_bp_type	type
	)		`[static]`

Definition at line 503 of file i386-nat.c.

References _, i386_insert_aligned_watchpoint(), i386_length_and_rw_bits(), i386_remove_aligned_watchpoint(), internal_error(), size, TARGET_HAS_DR_LEN_8, WP_COUNT, WP_INSERT, and WP_REMOVE.

Referenced by i386_insert_watchpoint(), i386_region_ok_for_watchpoint(), and i386_remove_watchpoint().

static int i386_insert_aligned_watchpoint	(	struct i386_debug_reg_state *	state,
		CORE_ADDR	addr,
		unsigned	len_rw_bits
	)		`[static]`

Definition at line 411 of file i386-nat.c.

References ALL_DEBUG_REGISTERS, i386_debug_reg_state::dr_control_mirror, DR_LOCAL_SLOWDOWN, i386_debug_reg_state::dr_mirror, DR_NADDR, i386_debug_reg_state::dr_ref_count, I386_DR_CONTROL_MASK, I386_DR_GET_RW_LEN, I386_DR_LOCAL_ENABLE, i386_dr_low, I386_DR_SET_RW_LEN, I386_DR_VACANT, i386_dr_low_type::set_addr, and i386_dr_low_type::set_control.

Referenced by i386_handle_nonaligned_watchpoint(), i386_insert_hw_breakpoint(), and i386_insert_watchpoint().

static int i386_insert_hw_breakpoint	(	struct gdbarch *	gdbarch,
		struct bp_target_info *	bp_tgt
	)		`[static]`

Definition at line 768 of file i386-nat.c.

References hw_execute, i386_debug_reg_state(), i386_insert_aligned_watchpoint(), i386_length_and_rw_bits(), i386_show_dr(), i386_update_inferior_debug_regs(), inferior_ptid, maint_show_dr, bp_target_info::placed_address, and ptid_get_pid().

Referenced by i386_use_watchpoints().

static int i386_insert_watchpoint	(	CORE_ADDR	addr,
		int	len,
		int	type,
		struct expression *	cond
	)		`[static]`

Definition at line 592 of file i386-nat.c.

References hw_read, i386_debug_reg_state(), i386_handle_nonaligned_watchpoint(), i386_insert_aligned_watchpoint(), i386_length_and_rw_bits(), i386_show_dr(), i386_update_inferior_debug_regs(), inferior_ptid, maint_show_dr, ptid_get_pid(), TARGET_HAS_DR_LEN_8, and WP_INSERT.

Referenced by i386_use_watchpoints().

static unsigned i386_length_and_rw_bits	(	int	len,
		enum target_hw_bp_type	type
	)		`[static]`

Definition at line 355 of file i386-nat.c.

References _, DR_LEN_1, DR_LEN_2, DR_LEN_4, DR_LEN_8, DR_RW_EXECUTE, DR_RW_IORW, DR_RW_READ, DR_RW_WRITE, hw_access, hw_execute, hw_read, hw_write, internal_error(), and TARGET_HAS_DR_LEN_8.

Referenced by i386_handle_nonaligned_watchpoint(), i386_insert_hw_breakpoint(), i386_insert_watchpoint(), i386_remove_hw_breakpoint(), and i386_remove_watchpoint().

static struct i386_process_info* i386_process_info_get ( pid_t pid ) [static, read]

Definition at line 210 of file i386-nat.c.

References i386_add_process(), and i386_find_process_pid().

Referenced by i386_debug_reg_state().

static int i386_region_ok_for_watchpoint	(	CORE_ADDR	addr,
		int	len
	)		`[static]`

Definition at line 665 of file i386-nat.c.

References DR_NADDR, hw_write, i386_debug_reg_state(), i386_handle_nonaligned_watchpoint(), inferior_ptid, ptid_get_pid(), and WP_COUNT.

Referenced by i386_use_watchpoints().

static int i386_remove_aligned_watchpoint	(	struct i386_debug_reg_state *	state,
		CORE_ADDR	addr,
		unsigned	len_rw_bits
	)		`[static]`

Definition at line 471 of file i386-nat.c.

References ALL_DEBUG_REGISTERS, i386_debug_reg_state::dr_control_mirror, i386_debug_reg_state::dr_mirror, i386_debug_reg_state::dr_ref_count, I386_DR_DISABLE, I386_DR_GET_RW_LEN, and I386_DR_VACANT.

Referenced by i386_handle_nonaligned_watchpoint(), i386_remove_hw_breakpoint(), and i386_remove_watchpoint().

static int i386_remove_hw_breakpoint	(	struct gdbarch *	gdbarch,
		struct bp_target_info *	bp_tgt
	)		`[static]`

Definition at line 794 of file i386-nat.c.

References hw_execute, i386_debug_reg_state(), i386_length_and_rw_bits(), i386_remove_aligned_watchpoint(), i386_show_dr(), i386_update_inferior_debug_regs(), inferior_ptid, maint_show_dr, bp_target_info::placed_address, and ptid_get_pid().

Referenced by i386_use_watchpoints().

static int i386_remove_watchpoint	(	CORE_ADDR	addr,
		int	len,
		int	type,
		struct expression *	cond
	)		`[static]`

Definition at line 630 of file i386-nat.c.

References i386_debug_reg_state(), i386_handle_nonaligned_watchpoint(), i386_length_and_rw_bits(), i386_remove_aligned_watchpoint(), i386_show_dr(), i386_update_inferior_debug_regs(), inferior_ptid, maint_show_dr, ptid_get_pid(), TARGET_HAS_DR_LEN_8, and WP_REMOVE.

Referenced by i386_use_watchpoints().

void i386_set_debug_register_length ( int len )

Definition at line 879 of file i386-nat.c.

References add_show_debug_regs_command(), i386_dr_low_type::debug_register_length, gdb_assert, i386_dr_low, and len.

Referenced by _initialize_amd64_linux_nat(), _initialize_amd64_windows_nat(), _initialize_amd64fbsd_nat(), _initialize_i386_linux_nat(), _initialize_i386_windows_nat(), _initialize_i386fbsd_nat(), darwin_complete_target(), and init_go32_ops().

static void i386_show_dr	(	struct i386_debug_reg_state *	state,
		const char *	func,
		CORE_ADDR	addr,
		int	len,
		enum target_hw_bp_type	type
	)		`[static]`

static int i386_stopped_by_watchpoint ( void ) [static]

Definition at line 759 of file i386-nat.c.

References current_target, and i386_stopped_data_address().

Referenced by i386_use_watchpoints().

static int i386_stopped_data_address	(	struct target_ops *	ops,
		CORE_ADDR *	addr_p
	)		`[static]`

Definition at line 683 of file i386-nat.c.

References ALL_DEBUG_REGISTERS, i386_dr_low_type::get_addr, i386_dr_low_type::get_control, i386_dr_low_type::get_status, hw_write, i386_debug_reg_state(), I386_DR_GET_RW_LEN, i386_dr_low, I386_DR_WATCH_HIT, i386_show_dr(), inferior_ptid, maint_show_dr, ptid_get_pid(), and exsummary::status.

Referenced by i386_stopped_by_watchpoint(), and i386_use_watchpoints().

static void i386_update_inferior_debug_regs ( struct i386_debug_reg_state * new_state ) [static]

Definition at line 567 of file i386-nat.c.

References ALL_DEBUG_REGISTERS, i386_debug_reg_state::dr_control_mirror, i386_debug_reg_state::dr_mirror, gdb_assert, i386_debug_reg_state(), i386_dr_low, I386_DR_VACANT, inferior_ptid, ptid_get_pid(), i386_dr_low_type::set_addr, and i386_dr_low_type::set_control.

Referenced by i386_insert_hw_breakpoint(), i386_insert_watchpoint(), i386_remove_hw_breakpoint(), and i386_remove_watchpoint().

void i386_use_watchpoints ( struct target_ops * t )

Variable Documentation

struct i386_dr_low_type i386_dr_low

Definition at line 40 of file i386-nat.c.

Referenced by _initialize_amd64_linux_nat(), _initialize_amd64fbsd_nat(), _initialize_i386_linux_nat(), _initialize_i386fbsd_nat(), darwin_complete_target(), i386_insert_aligned_watchpoint(), i386_set_debug_register_length(), i386_stopped_data_address(), i386_update_inferior_debug_regs(), init_go32_ops(), and init_windows_ops().

struct i386_process_info* i386_process_list = NULL [static]

Definition at line 173 of file i386-nat.c.

Referenced by i386_add_process(), and i386_forget_process().

int maint_show_dr [static]

Definition at line 255 of file i386-nat.c.

Referenced by add_show_debug_regs_command(), i386_insert_hw_breakpoint(), i386_insert_watchpoint(), i386_remove_hw_breakpoint(), i386_remove_watchpoint(), and i386_stopped_data_address().

Classes

Defines

Enumerations

Functions

Variables

Define Documentation

Enumeration Type Documentation

Function Documentation

Variable Documentation