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Macros | Enumerations | Functions
x86-dregs.c File Reference
#include "common-defs.h"
#include "x86-dregs.h"
#include "break-common.h"

Go to the source code of this file.

Macros

#define x86_dr_low_can_set_addr()   (x86_dr_low.set_addr != NULL)
 
#define x86_dr_low_set_addr(new_state, i)   (x86_dr_low.set_addr ((i), (new_state)->dr_mirror[(i)]))
 
#define x86_dr_low_get_addr(i)   (x86_dr_low.get_addr ((i)))
 
#define x86_dr_low_can_set_control()   (x86_dr_low.set_control != NULL)
 
#define x86_dr_low_set_control(new_state)   (x86_dr_low.set_control ((new_state)->dr_control_mirror))
 
#define x86_dr_low_get_control()   (x86_dr_low.get_control ())
 
#define x86_dr_low_get_status()   (x86_dr_low.get_status ())
 
#define x86_get_debug_register_length()   (x86_dr_low.debug_register_length)
 
#define TARGET_HAS_DR_LEN_8   (x86_get_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 X86_DR_CONTROL_MASK   (~DR_CONTROL_RESERVED)
 
#define X86_DR_VACANT(state, i)   (((state)->dr_control_mirror & (3 << (DR_ENABLE_SIZE * (i)))) == 0)
 
#define X86_DR_LOCAL_ENABLE(state, i)
 
#define X86_DR_GLOBAL_ENABLE(state, i)
 
#define X86_DR_DISABLE(state, i)
 
#define X86_DR_SET_RW_LEN(state, i, rwlen)
 
#define X86_DR_GET_RW_LEN(dr7, i)
 
#define X86_DR_WATCH_HIT(dr6, i)   ((dr6) & (1 << (i)))
 

Enumerations

enum  x86_wp_op_t { WP_INSERT, WP_REMOVE, WP_COUNT }
 

Functions

static void x86_show_dr (struct x86_debug_reg_state *state, const char *func, CORE_ADDR addr, int len, enum target_hw_bp_type type)
 
static unsigned x86_length_and_rw_bits (int len, enum target_hw_bp_type type)
 
static int x86_insert_aligned_watchpoint (struct x86_debug_reg_state *state, CORE_ADDR addr, unsigned len_rw_bits)
 
static int x86_remove_aligned_watchpoint (struct x86_debug_reg_state *state, CORE_ADDR addr, unsigned len_rw_bits)
 
static int x86_handle_nonaligned_watchpoint (struct x86_debug_reg_state *state, x86_wp_op_t what, CORE_ADDR addr, int len, enum target_hw_bp_type type)
 
static void x86_update_inferior_debug_regs (struct x86_debug_reg_state *state, struct x86_debug_reg_state *new_state)
 
int x86_dr_insert_watchpoint (struct x86_debug_reg_state *state, enum target_hw_bp_type type, CORE_ADDR addr, int len)
 
int x86_dr_remove_watchpoint (struct x86_debug_reg_state *state, enum target_hw_bp_type type, CORE_ADDR addr, int len)
 
int x86_dr_region_ok_for_watchpoint (struct x86_debug_reg_state *state, CORE_ADDR addr, int len)
 
int x86_dr_stopped_data_address (struct x86_debug_reg_state *state, CORE_ADDR *addr_p)
 
int x86_dr_stopped_by_watchpoint (struct x86_debug_reg_state *state)
 

Macro Definition Documentation

◆ DR_CONTROL_RESERVED

#define DR_CONTROL_RESERVED   (0xFC00)

Definition at line 121 of file x86-dregs.c.

◆ DR_CONTROL_SHIFT

#define DR_CONTROL_SHIFT   16

Definition at line 70 of file x86-dregs.c.

◆ DR_CONTROL_SIZE

#define DR_CONTROL_SIZE   4

Definition at line 72 of file x86-dregs.c.

◆ DR_ENABLE_SIZE

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

Definition at line 106 of file x86-dregs.c.

◆ DR_GLOBAL_ENABLE_SHIFT

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

Definition at line 105 of file x86-dregs.c.

◆ DR_GLOBAL_SLOWDOWN

#define DR_GLOBAL_SLOWDOWN   (0x200)

Definition at line 114 of file x86-dregs.c.

◆ DR_LEN_1

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

Definition at line 88 of file x86-dregs.c.

Referenced by x86_length_and_rw_bits().

◆ DR_LEN_2

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

Definition at line 89 of file x86-dregs.c.

Referenced by x86_length_and_rw_bits().

◆ DR_LEN_4

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

Definition at line 90 of file x86-dregs.c.

Referenced by x86_length_and_rw_bits().

◆ DR_LEN_8

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

Definition at line 91 of file x86-dregs.c.

Referenced by x86_length_and_rw_bits().

◆ DR_LOCAL_ENABLE_SHIFT

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

Definition at line 104 of file x86-dregs.c.

◆ DR_LOCAL_SLOWDOWN

#define DR_LOCAL_SLOWDOWN   (0x100)

Definition at line 113 of file x86-dregs.c.

Referenced by x86_insert_aligned_watchpoint(), and x86_remove_aligned_watchpoint().

◆ DR_RW_EXECUTE

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

Definition at line 75 of file x86-dregs.c.

Referenced by x86_length_and_rw_bits().

◆ DR_RW_IORW

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

Definition at line 83 of file x86-dregs.c.

Referenced by x86_length_and_rw_bits().

◆ DR_RW_READ

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

Definition at line 77 of file x86-dregs.c.

Referenced by x86_length_and_rw_bits().

◆ DR_RW_WRITE

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

Definition at line 76 of file x86-dregs.c.

Referenced by x86_length_and_rw_bits().

◆ TARGET_HAS_DR_LEN_8

#define TARGET_HAS_DR_LEN_8   (x86_get_debug_register_length () == 8)

Definition at line 65 of file x86-dregs.c.

Referenced by x86_dr_insert_watchpoint(), x86_dr_remove_watchpoint(), x86_handle_nonaligned_watchpoint(), and x86_length_and_rw_bits().

◆ X86_DR_CONTROL_MASK

#define X86_DR_CONTROL_MASK   (~DR_CONTROL_RESERVED)

Definition at line 126 of file x86-dregs.c.

Referenced by x86_insert_aligned_watchpoint().

◆ X86_DR_DISABLE

#define X86_DR_DISABLE (   state,
  i 
)
Value:
do { \
(state)->dr_control_mirror &= \
~(3 << (DR_ENABLE_SIZE * (i))); \
} while (0)
DR_ENABLE_SIZE
#define DR_ENABLE_SIZE
Definition: x86-dregs.c:106
proc::state
thread_state_data_t state
Definition: gnu-nat.h:59

Definition at line 148 of file x86-dregs.c.

Referenced by x86_remove_aligned_watchpoint().

◆ X86_DR_GET_RW_LEN

#define X86_DR_GET_RW_LEN (   dr7,
  i 
)
Value:
(((dr7) \
>> (DR_CONTROL_SHIFT + DR_CONTROL_SIZE * (i))) & 0x0f)
DR_CONTROL_SIZE
#define DR_CONTROL_SIZE
Definition: x86-dregs.c:72
DR_CONTROL_SHIFT
#define DR_CONTROL_SHIFT
Definition: x86-dregs.c:70

Definition at line 164 of file x86-dregs.c.

Referenced by x86_dr_stopped_data_address(), x86_insert_aligned_watchpoint(), and x86_remove_aligned_watchpoint().

◆ X86_DR_GLOBAL_ENABLE

#define X86_DR_GLOBAL_ENABLE (   state,
  i 
)
Value:
do { \
(state)->dr_control_mirror |= \
(1 << (DR_GLOBAL_ENABLE_SHIFT + DR_ENABLE_SIZE * (i))); \
} while (0)
DR_ENABLE_SIZE
#define DR_ENABLE_SIZE
Definition: x86-dregs.c:106
proc::state
thread_state_data_t state
Definition: gnu-nat.h:59
DR_GLOBAL_ENABLE_SHIFT
#define DR_GLOBAL_ENABLE_SHIFT
Definition: x86-dregs.c:105

Definition at line 141 of file x86-dregs.c.

◆ X86_DR_LOCAL_ENABLE

#define X86_DR_LOCAL_ENABLE (   state,
  i 
)
Value:
do { \
(state)->dr_control_mirror |= \
(1 << (DR_LOCAL_ENABLE_SHIFT + DR_ENABLE_SIZE * (i))); \
} while (0)
DR_ENABLE_SIZE
#define DR_ENABLE_SIZE
Definition: x86-dregs.c:106
proc::state
thread_state_data_t state
Definition: gnu-nat.h:59
DR_LOCAL_ENABLE_SHIFT
#define DR_LOCAL_ENABLE_SHIFT
Definition: x86-dregs.c:104

Definition at line 134 of file x86-dregs.c.

Referenced by x86_insert_aligned_watchpoint().

◆ x86_dr_low_can_set_addr

#define x86_dr_low_can_set_addr ( )    (x86_dr_low.set_addr != NULL)

Definition at line 38 of file x86-dregs.c.

Referenced by x86_insert_aligned_watchpoint().

◆ x86_dr_low_can_set_control

#define x86_dr_low_can_set_control ( )    (x86_dr_low.set_control != NULL)

Definition at line 48 of file x86-dregs.c.

Referenced by x86_insert_aligned_watchpoint().

◆ x86_dr_low_get_addr

#define x86_dr_low_get_addr (   i)    (x86_dr_low.get_addr ((i)))

Definition at line 45 of file x86-dregs.c.

Referenced by x86_dr_stopped_data_address().

◆ x86_dr_low_get_control

#define x86_dr_low_get_control ( )    (x86_dr_low.get_control ())

Definition at line 55 of file x86-dregs.c.

Referenced by x86_dr_stopped_data_address().

◆ x86_dr_low_get_status

#define x86_dr_low_get_status ( )    (x86_dr_low.get_status ())

Definition at line 58 of file x86-dregs.c.

Referenced by x86_dr_stopped_data_address().

◆ x86_dr_low_set_addr

#define x86_dr_low_set_addr (   new_state,
  i 
)    (x86_dr_low.set_addr ((i), (new_state)->dr_mirror[(i)]))

Definition at line 41 of file x86-dregs.c.

Referenced by x86_update_inferior_debug_regs().

◆ x86_dr_low_set_control

#define x86_dr_low_set_control (   new_state)    (x86_dr_low.set_control ((new_state)->dr_control_mirror))

Definition at line 51 of file x86-dregs.c.

Referenced by x86_update_inferior_debug_regs().

◆ X86_DR_SET_RW_LEN

#define X86_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)
DR_CONTROL_SIZE
#define DR_CONTROL_SIZE
Definition: x86-dregs.c:72
proc::state
thread_state_data_t state
Definition: gnu-nat.h:59
DR_CONTROL_SHIFT
#define DR_CONTROL_SHIFT
Definition: x86-dregs.c:70

Definition at line 155 of file x86-dregs.c.

Referenced by x86_insert_aligned_watchpoint(), and x86_remove_aligned_watchpoint().

◆ X86_DR_VACANT

#define X86_DR_VACANT (   state,
  i 
)    (((state)->dr_control_mirror & (3 << (DR_ENABLE_SIZE * (i)))) == 0)

Definition at line 130 of file x86-dregs.c.

Referenced by x86_insert_aligned_watchpoint(), x86_remove_aligned_watchpoint(), and x86_update_inferior_debug_regs().

◆ X86_DR_WATCH_HIT

#define X86_DR_WATCH_HIT (   dr6,
  i 
)    ((dr6) & (1 << (i)))

Definition at line 169 of file x86-dregs.c.

Referenced by x86_dr_stopped_data_address().

◆ x86_get_debug_register_length

#define x86_get_debug_register_length ( )    (x86_dr_low.debug_register_length)

Definition at line 61 of file x86-dregs.c.

Referenced by x86_show_dr().

Enumeration Type Documentation

◆ x86_wp_op_t

enum x86_wp_op_t
Enumerator
WP_INSERT 
WP_REMOVE 
WP_COUNT 

Definition at line 172 of file x86-dregs.c.

Function Documentation

◆ x86_dr_insert_watchpoint()

int x86_dr_insert_watchpoint ( struct x86_debug_reg_state *  state,
enum target_hw_bp_type  type,
CORE_ADDR  addr,
int  len 
)

Definition at line 470 of file x86-dregs.c.

References hw_read, show_debug_regs, TARGET_HAS_DR_LEN_8, WP_INSERT, x86_handle_nonaligned_watchpoint(), x86_insert_aligned_watchpoint(), x86_length_and_rw_bits(), x86_show_dr(), and x86_update_inferior_debug_regs().

Referenced by x86_insert_hw_breakpoint(), and x86_insert_watchpoint().

◆ x86_dr_region_ok_for_watchpoint()

int x86_dr_region_ok_for_watchpoint ( struct x86_debug_reg_state *  state,
CORE_ADDR  addr,
int  len 
)

Definition at line 550 of file x86-dregs.c.

References DR_NADDR, hw_write, WP_COUNT, and x86_handle_nonaligned_watchpoint().

Referenced by x86_region_ok_for_watchpoint().

◆ x86_dr_remove_watchpoint()

int x86_dr_remove_watchpoint ( struct x86_debug_reg_state *  state,
enum target_hw_bp_type  type,
CORE_ADDR  addr,
int  len 
)

Definition at line 512 of file x86-dregs.c.

References show_debug_regs, TARGET_HAS_DR_LEN_8, WP_REMOVE, x86_handle_nonaligned_watchpoint(), x86_length_and_rw_bits(), x86_remove_aligned_watchpoint(), x86_show_dr(), and x86_update_inferior_debug_regs().

Referenced by x86_remove_hw_breakpoint(), and x86_remove_watchpoint().

◆ x86_dr_stopped_by_watchpoint()

int x86_dr_stopped_by_watchpoint ( struct x86_debug_reg_state *  state)

Definition at line 647 of file x86-dregs.c.

References x86_dr_stopped_data_address().

Referenced by x86_stopped_by_watchpoint().

◆ x86_dr_stopped_data_address()

int x86_dr_stopped_data_address ( struct x86_debug_reg_state *  state,
CORE_ADDR *  addr_p 
)

Definition at line 567 of file x86-dregs.c.

References ALL_DEBUG_ADDRESS_REGISTERS, hw_write, show_debug_regs, status, X86_DR_GET_RW_LEN, x86_dr_low_get_addr, x86_dr_low_get_control, x86_dr_low_get_status, X86_DR_WATCH_HIT, and x86_show_dr().

Referenced by x86_dr_stopped_by_watchpoint(), and x86_stopped_data_address().

◆ x86_handle_nonaligned_watchpoint()

static int x86_handle_nonaligned_watchpoint ( struct x86_debug_reg_state *  state,
x86_wp_op_t  what,
CORE_ADDR  addr,
int  len,
enum target_hw_bp_type  type 
)
static

Definition at line 382 of file x86-dregs.c.

References _, mips_watchpoint::addr, internal_error(), mips_watchpoint::len, size, TARGET_HAS_DR_LEN_8, WP_COUNT, WP_INSERT, WP_REMOVE, x86_insert_aligned_watchpoint(), x86_length_and_rw_bits(), and x86_remove_aligned_watchpoint().

Referenced by x86_dr_insert_watchpoint(), x86_dr_region_ok_for_watchpoint(), and x86_dr_remove_watchpoint().

◆ x86_insert_aligned_watchpoint()

static int x86_insert_aligned_watchpoint ( struct x86_debug_reg_state *  state,
CORE_ADDR  addr,
unsigned  len_rw_bits 
)
static

Definition at line 270 of file x86-dregs.c.

References mips_watchpoint::addr, ALL_DEBUG_ADDRESS_REGISTERS, x86_debug_reg_state::dr_control_mirror, DR_LOCAL_SLOWDOWN, x86_debug_reg_state::dr_mirror, DR_NADDR, x86_debug_reg_state::dr_ref_count, X86_DR_CONTROL_MASK, X86_DR_GET_RW_LEN, X86_DR_LOCAL_ENABLE, x86_dr_low_can_set_addr, x86_dr_low_can_set_control, X86_DR_SET_RW_LEN, and X86_DR_VACANT.

Referenced by x86_dr_insert_watchpoint(), and x86_handle_nonaligned_watchpoint().

◆ x86_length_and_rw_bits()

static unsigned x86_length_and_rw_bits ( int  len,
enum target_hw_bp_type  type 
)
static

Definition at line 214 of file x86-dregs.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(), mips_watchpoint::len, and TARGET_HAS_DR_LEN_8.

Referenced by x86_dr_insert_watchpoint(), x86_dr_remove_watchpoint(), and x86_handle_nonaligned_watchpoint().

◆ x86_remove_aligned_watchpoint()

static int x86_remove_aligned_watchpoint ( struct x86_debug_reg_state *  state,
CORE_ADDR  addr,
unsigned  len_rw_bits 
)
static

Definition at line 330 of file x86-dregs.c.

References mips_watchpoint::addr, ALL_DEBUG_ADDRESS_REGISTERS, x86_debug_reg_state::dr_control_mirror, DR_LOCAL_SLOWDOWN, x86_debug_reg_state::dr_mirror, x86_debug_reg_state::dr_ref_count, gdb_assert, X86_DR_DISABLE, X86_DR_GET_RW_LEN, X86_DR_SET_RW_LEN, and X86_DR_VACANT.

Referenced by x86_dr_remove_watchpoint(), and x86_handle_nonaligned_watchpoint().

◆ x86_show_dr()

static void x86_show_dr ( struct x86_debug_reg_state *  state,
const char *  func,
CORE_ADDR  addr,
int  len,
enum target_hw_bp_type  type 
)
static

Definition at line 177 of file x86-dregs.c.

References mips_watchpoint::addr, ALL_DEBUG_ADDRESS_REGISTERS, debug_printf(), x86_debug_reg_state::dr_control_mirror, x86_debug_reg_state::dr_mirror, x86_debug_reg_state::dr_ref_count, x86_debug_reg_state::dr_status_mirror, func, hw_access, hw_execute, hw_read, hw_write, mips_watchpoint::len, phex(), and x86_get_debug_register_length.

Referenced by x86_dr_insert_watchpoint(), x86_dr_remove_watchpoint(), and x86_dr_stopped_data_address().

◆ x86_update_inferior_debug_regs()

static void x86_update_inferior_debug_regs ( struct x86_debug_reg_state *  state,
struct x86_debug_reg_state *  new_state 
)
static

Definition at line 446 of file x86-dregs.c.

References ALL_DEBUG_ADDRESS_REGISTERS, x86_debug_reg_state::dr_control_mirror, x86_debug_reg_state::dr_mirror, gdb_assert, x86_dr_low_set_addr, x86_dr_low_set_control, and X86_DR_VACANT.

Referenced by x86_dr_insert_watchpoint(), and x86_dr_remove_watchpoint().

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