mirror of
https://sourceware.org/git/binutils-gdb.git
synced 2024-12-21 04:42:53 +08:00
120 lines
3.8 KiB
C
120 lines
3.8 KiB
C
/* Copyright (C) 2009-2020 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 NAT_MIPS_LINUX_WATCH_H
|
|
#define NAT_MIPS_LINUX_WATCH_H
|
|
|
|
#include <asm/ptrace.h>
|
|
#include "gdbsupport/break-common.h"
|
|
|
|
#define MAX_DEBUG_REGISTER 8
|
|
|
|
/* If macro PTRACE_GET_WATCH_REGS is not defined, kernel header doesn't
|
|
have hardware watchpoint-related structures. Define them below. */
|
|
|
|
#ifndef PTRACE_GET_WATCH_REGS
|
|
# define PTRACE_GET_WATCH_REGS 0xd0
|
|
# define PTRACE_SET_WATCH_REGS 0xd1
|
|
|
|
enum pt_watch_style {
|
|
pt_watch_style_mips32,
|
|
pt_watch_style_mips64
|
|
};
|
|
|
|
/* A value of zero in a watchlo indicates that it is available. */
|
|
|
|
struct mips32_watch_regs
|
|
{
|
|
uint32_t watchlo[MAX_DEBUG_REGISTER];
|
|
/* Lower 16 bits of watchhi. */
|
|
uint16_t watchhi[MAX_DEBUG_REGISTER];
|
|
/* Valid mask and I R W bits.
|
|
* bit 0 -- 1 if W bit is usable.
|
|
* bit 1 -- 1 if R bit is usable.
|
|
* bit 2 -- 1 if I bit is usable.
|
|
* bits 3 - 11 -- Valid watchhi mask bits.
|
|
*/
|
|
uint16_t watch_masks[MAX_DEBUG_REGISTER];
|
|
/* The number of valid watch register pairs. */
|
|
uint32_t num_valid;
|
|
/* There is confusion across gcc versions about structure alignment,
|
|
so we force 8 byte alignment for these structures so they match
|
|
the kernel even if it was build with a different gcc version. */
|
|
} __attribute__ ((aligned (8)));
|
|
|
|
struct mips64_watch_regs
|
|
{
|
|
uint64_t watchlo[MAX_DEBUG_REGISTER];
|
|
uint16_t watchhi[MAX_DEBUG_REGISTER];
|
|
uint16_t watch_masks[MAX_DEBUG_REGISTER];
|
|
uint32_t num_valid;
|
|
} __attribute__ ((aligned (8)));
|
|
|
|
struct pt_watch_regs
|
|
{
|
|
enum pt_watch_style style;
|
|
union
|
|
{
|
|
struct mips32_watch_regs mips32;
|
|
struct mips64_watch_regs mips64;
|
|
};
|
|
};
|
|
|
|
#endif /* !PTRACE_GET_WATCH_REGS */
|
|
|
|
#define W_BIT 0
|
|
#define R_BIT 1
|
|
#define I_BIT 2
|
|
|
|
#define W_MASK (1 << W_BIT)
|
|
#define R_MASK (1 << R_BIT)
|
|
#define I_MASK (1 << I_BIT)
|
|
|
|
#define IRW_MASK (I_MASK | R_MASK | W_MASK)
|
|
|
|
/* We keep list of all watchpoints we should install and calculate the
|
|
watch register values each time the list changes. This allows for
|
|
easy sharing of watch registers for more than one watchpoint. */
|
|
|
|
struct mips_watchpoint
|
|
{
|
|
CORE_ADDR addr;
|
|
int len;
|
|
enum target_hw_bp_type type;
|
|
struct mips_watchpoint *next;
|
|
};
|
|
|
|
uint32_t mips_linux_watch_get_num_valid (struct pt_watch_regs *regs);
|
|
uint32_t mips_linux_watch_get_irw_mask (struct pt_watch_regs *regs, int n);
|
|
CORE_ADDR mips_linux_watch_get_watchlo (struct pt_watch_regs *regs, int n);
|
|
void mips_linux_watch_set_watchlo (struct pt_watch_regs *regs, int n,
|
|
CORE_ADDR value);
|
|
uint32_t mips_linux_watch_get_watchhi (struct pt_watch_regs *regs, int n);
|
|
void mips_linux_watch_set_watchhi (struct pt_watch_regs *regs, int n,
|
|
uint16_t value);
|
|
int mips_linux_watch_try_one_watch (struct pt_watch_regs *regs,
|
|
CORE_ADDR addr, int len, uint32_t irw);
|
|
void mips_linux_watch_populate_regs (struct mips_watchpoint *current_watches,
|
|
struct pt_watch_regs *regs);
|
|
uint32_t mips_linux_watch_type_to_irw (enum target_hw_bp_type type);
|
|
|
|
int mips_linux_read_watch_registers (long lwpid,
|
|
struct pt_watch_regs *watch_readback,
|
|
int *watch_readback_valid, int force);
|
|
|
|
#endif /* NAT_MIPS_LINUX_WATCH_H */
|