cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
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debug_core.h (2589B)

      1/*
      2 * Created by: Jason Wessel <jason.wessel@windriver.com>
      3 *
      4 * Copyright (c) 2009 Wind River Systems, Inc.  All Rights Reserved.
      5 *
      6 * This file is licensed under the terms of the GNU General Public
      7 * License version 2. This program is licensed "as is" without any
      8 * warranty of any kind, whether express or implied.
      9 */
     10
     11#ifndef _DEBUG_CORE_H_
     12#define _DEBUG_CORE_H_
     13/*
     14 * These are the private implementation headers between the kernel
     15 * debugger core and the debugger front end code.
     16 */
     17
     18/* kernel debug core data structures */
     19struct kgdb_state {
     20	int			ex_vector;
     21	int			signo;
     22	int			err_code;
     23	int			cpu;
     24	int			pass_exception;
     25	unsigned long		thr_query;
     26	unsigned long		threadid;
     27	long			kgdb_usethreadid;
     28	struct pt_regs		*linux_regs;
     29	atomic_t		*send_ready;
     30};
     31
     32/* Exception state values */
     33#define DCPU_WANT_MASTER 0x1 /* Waiting to become a master kgdb cpu */
     34#define DCPU_NEXT_MASTER 0x2 /* Transition from one master cpu to another */
     35#define DCPU_IS_SLAVE    0x4 /* Slave cpu enter exception */
     36#define DCPU_WANT_BT     0x8 /* Slave cpu should backtrace then clear flag */
     37
     38struct debuggerinfo_struct {
     39	void			*debuggerinfo;
     40	struct task_struct	*task;
     41	int			exception_state;
     42	int			ret_state;
     43	int			irq_depth;
     44	int			enter_kgdb;
     45	bool			rounding_up;
     46};
     47
     48extern struct debuggerinfo_struct kgdb_info[];
     49
     50/* kernel debug core break point routines */
     51extern int dbg_remove_all_break(void);
     52extern int dbg_set_sw_break(unsigned long addr);
     53extern int dbg_remove_sw_break(unsigned long addr);
     54extern int dbg_activate_sw_breakpoints(void);
     55extern int dbg_deactivate_sw_breakpoints(void);
     56
     57/* polled character access to i/o module */
     58extern int dbg_io_get_char(void);
     59
     60/* stub return value for switching between the gdbstub and kdb */
     61#define DBG_PASS_EVENT -12345
     62/* Switch from one cpu to another */
     63#define DBG_SWITCH_CPU_EVENT -123456
     64extern int dbg_switch_cpu;
     65
     66/* gdbstub interface functions */
     67extern int gdb_serial_stub(struct kgdb_state *ks);
     68extern void gdbstub_msg_write(const char *s, int len);
     69
     70/* gdbstub functions used for kdb <-> gdbstub transition */
     71extern int gdbstub_state(struct kgdb_state *ks, char *cmd);
     72extern int dbg_kdb_mode;
     73
     74#ifdef CONFIG_KGDB_KDB
     75extern int kdb_stub(struct kgdb_state *ks);
     76extern int kdb_parse(const char *cmdstr);
     77extern int kdb_common_init_state(struct kgdb_state *ks);
     78extern int kdb_common_deinit_state(void);
     79extern void kdb_dump_stack_on_cpu(int cpu);
     80#else /* ! CONFIG_KGDB_KDB */
     81static inline int kdb_stub(struct kgdb_state *ks)
     82{
     83	return DBG_PASS_EVENT;
     84}
     85#endif /* CONFIG_KGDB_KDB */
     86
     87#endif /* _DEBUG_CORE_H_ */