/* MN10300 Kernel GDB stub definitions * * Copyright (C) 2007 Red Hat, Inc. All Rights Reserved. * Written by David Howells (dhowells@redhat.com) * - 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 */