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gdb-stub.h
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/* MN10300 Kernel GDB stub definitions
*
* Copyright (C) 2007 Red Hat, Inc. All Rights Reserved.
* Written by David Howells ([email protected])
* - Derived from asm-mips/gdb-stub.h (c) 1995 Andreas Busse
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public Licence
* as published by the Free Software Foundation; either version
* 2 of the Licence, or (at your option) any later version.
*/
#ifndef _ASM_GDB_STUB_H
#define _ASM_GDB_STUB_H
#include <asm/exceptions.h>
/*
* register ID numbers in GDB remote protocol
*/
#define GDB_REGID_PC 9
#define GDB_REGID_FP 7
#define GDB_REGID_SP 8
/*
* virtual stack layout for the GDB exception handler
*/
#define NUMREGS 64
#define GDB_FR_D0 (0 * 4)
#define GDB_FR_D1 (1 * 4)
#define GDB_FR_D2 (2 * 4)
#define GDB_FR_D3 (3 * 4)
#define GDB_FR_A0 (4 * 4)
#define GDB_FR_A1 (5 * 4)
#define GDB_FR_A2 (6 * 4)
#define GDB_FR_A3 (7 * 4)
#define GDB_FR_SP (8 * 4)
#define GDB_FR_PC (9 * 4)
#define GDB_FR_MDR (10 * 4)
#define GDB_FR_EPSW (11 * 4)
#define GDB_FR_LIR (12 * 4)
#define GDB_FR_LAR (13 * 4)
#define GDB_FR_MDRQ (14 * 4)
#define GDB_FR_E0 (15 * 4)
#define GDB_FR_E1 (16 * 4)
#define GDB_FR_E2 (17 * 4)
#define GDB_FR_E3 (18 * 4)
#define GDB_FR_E4 (19 * 4)
#define GDB_FR_E5 (20 * 4)
#define GDB_FR_E6 (21 * 4)
#define GDB_FR_E7 (22 * 4)
#define GDB_FR_SSP (23 * 4)
#define GDB_FR_MSP (24 * 4)
#define GDB_FR_USP (25 * 4)
#define GDB_FR_MCRH (26 * 4)
#define GDB_FR_MCRL (27 * 4)
#define GDB_FR_MCVF (28 * 4)
#define GDB_FR_FPCR (29 * 4)
#define GDB_FR_DUMMY0 (30 * 4)
#define GDB_FR_DUMMY1 (31 * 4)
#define GDB_FR_FS0 (32 * 4)
#define GDB_FR_SIZE (NUMREGS * 4)
#ifndef __ASSEMBLY__
/*
* This is the same as above, but for the high-level
* part of the GDB stub.
*/
struct gdb_regs {
/* saved main processor registers */
u32 d0, d1, d2, d3, a0, a1, a2, a3;
u32 sp, pc, mdr, epsw, lir, lar, mdrq;
u32 e0, e1, e2, e3, e4, e5, e6, e7;
u32 ssp, msp, usp, mcrh, mcrl, mcvf;
/* saved floating point registers */
u32 fpcr, _dummy0, _dummy1;
u32 fs0, fs1, fs2, fs3, fs4, fs5, fs6, fs7;
u32 fs8, fs9, fs10, fs11, fs12, fs13, fs14, fs15;
u32 fs16, fs17, fs18, fs19, fs20, fs21, fs22, fs23;
u32 fs24, fs25, fs26, fs27, fs28, fs29, fs30, fs31;
};
/*
* Prototypes
*/
extern void show_registers_only(struct pt_regs *regs);
extern asmlinkage void gdbstub_init(void);
extern asmlinkage void gdbstub_exit(int status);
extern asmlinkage void gdbstub_io_init(void);
extern asmlinkage void gdbstub_io_set_baud(unsigned baud);
extern asmlinkage int gdbstub_io_rx_char(unsigned char *_ch, int nonblock);
extern asmlinkage void gdbstub_io_tx_char(unsigned char ch);
extern asmlinkage void gdbstub_io_tx_flush(void);
extern asmlinkage void gdbstub_io_rx_handler(void);
extern asmlinkage void gdbstub_rx_irq(struct pt_regs *, enum exception_code);
extern asmlinkage int gdbstub_intercept(struct pt_regs *, enum exception_code);
extern asmlinkage void gdbstub_exception(struct pt_regs *, enum exception_code);
extern asmlinkage void __gdbstub_bug_trap(void);
extern asmlinkage void __gdbstub_pause(void);
extern asmlinkage void start_kernel(void);
#ifndef CONFIG_MN10300_CACHE_DISABLED
extern asmlinkage void gdbstub_purge_cache(void);
#else
#define gdbstub_purge_cache() do {} while (0)
#endif
/* Used to prevent crashes in memory access */
extern asmlinkage int gdbstub_read_byte(const u8 *, u8 *);
extern asmlinkage int gdbstub_read_word(const u8 *, u8 *);
extern asmlinkage int gdbstub_read_dword(const u8 *, u8 *);
extern asmlinkage int gdbstub_write_byte(u32, u8 *);
extern asmlinkage int gdbstub_write_word(u32, u8 *);
extern asmlinkage int gdbstub_write_dword(u32, u8 *);
extern asmlinkage void gdbstub_read_byte_guard(void);
extern asmlinkage void gdbstub_read_byte_cont(void);
extern asmlinkage void gdbstub_read_word_guard(void);
extern asmlinkage void gdbstub_read_word_cont(void);
extern asmlinkage void gdbstub_read_dword_guard(void);
extern asmlinkage void gdbstub_read_dword_cont(void);
extern asmlinkage void gdbstub_write_byte_guard(void);
extern asmlinkage void gdbstub_write_byte_cont(void);
extern asmlinkage void gdbstub_write_word_guard(void);
extern asmlinkage void gdbstub_write_word_cont(void);
extern asmlinkage void gdbstub_write_dword_guard(void);
extern asmlinkage void gdbstub_write_dword_cont(void);
extern u8 gdbstub_rx_buffer[PAGE_SIZE];
extern u32 gdbstub_rx_inp;
extern u32 gdbstub_rx_outp;
extern u8 gdbstub_rx_overflow;
extern u8 gdbstub_busy;
extern u8 gdbstub_rx_unget;
#ifdef CONFIG_GDBSTUB_DEBUGGING
extern void gdbstub_printk(const char *fmt, ...)
__attribute__((format(printf, 1, 2)));
#else
static inline __attribute__((format(printf, 1, 2)))
void gdbstub_printk(const char *fmt, ...)
{
}
#endif
#ifdef CONFIG_GDBSTUB_DEBUG_ENTRY
#define gdbstub_entry(FMT, ...) gdbstub_printk(FMT, ##__VA_ARGS__)
#else
#define gdbstub_entry(FMT, ...) ({ 0; })
#endif
#ifdef CONFIG_GDBSTUB_DEBUG_PROTOCOL
#define gdbstub_proto(FMT, ...) gdbstub_printk(FMT, ##__VA_ARGS__)
#else
#define gdbstub_proto(FMT, ...) ({ 0; })
#endif
#ifdef CONFIG_GDBSTUB_DEBUG_IO
#define gdbstub_io(FMT, ...) gdbstub_printk(FMT, ##__VA_ARGS__)
#else
#define gdbstub_io(FMT, ...) ({ 0; })
#endif
#ifdef CONFIG_GDBSTUB_DEBUG_BREAKPOINT
#define gdbstub_bkpt(FMT, ...) gdbstub_printk(FMT, ##__VA_ARGS__)
#else
#define gdbstub_bkpt(FMT, ...) ({ 0; })
#endif
#endif /* !__ASSEMBLY__ */
#endif /* _ASM_GDB_STUB_H */