/* gdb-stub.h: FRV GDB stub * * Copyright (C) 2003 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 License * as published by the Free Software Foundation; either version * 2 of the License, or (at your option) any later version. */ #ifndef __ASM_GDB_STUB_H #define __ASM_GDB_STUB_H #undef GDBSTUB_DEBUG_PROTOCOL #include <asm/ptrace.h> /* * important register numbers in GDB protocol * - GR0, GR1, GR2, GR3, GR4, GR5, GR6, GR7, * - GR8, GR9, GR10, GR11, GR12, GR13, GR14, GR15, * - GR16, GR17, GR18, GR19, GR20, GR21, GR22, GR23, * - GR24, GR25, GR26, GR27, GR28, GR29, GR30, GR31, * - GR32, GR33, GR34, GR35, GR36, GR37, GR38, GR39, * - GR40, GR41, GR42, GR43, GR44, GR45, GR46, GR47, * - GR48, GR49, GR50, GR51, GR52, GR53, GR54, GR55, * - GR56, GR57, GR58, GR59, GR60, GR61, GR62, GR63, * - FR0, FR1, FR2, FR3, FR4, FR5, FR6, FR7, * - FR8, FR9, FR10, FR11, FR12, FR13, FR14, FR15, * - FR16, FR17, FR18, FR19, FR20, FR21, FR22, FR23, * - FR24, FR25, FR26, FR27, FR28, FR29, FR30, FR31, * - FR32, FR33, FR34, FR35, FR36, FR37, FR38, FR39, * - FR40, FR41, FR42, FR43, FR44, FR45, FR46, FR47, * - FR48, FR49, FR50, FR51, FR52, FR53, FR54, FR55, * - FR56, FR57, FR58, FR59, FR60, FR61, FR62, FR63, * - PC, PSR, CCR, CCCR, * - _X132, _X133, _X134 * - TBR, BRR, DBAR0, DBAR1, DBAR2, DBAR3, * - SCR0, SCR1, SCR2, SCR3, * - LR, LCR, * - IACC0H, IACC0L, * - FSR0, * - ACC0, ACC1, ACC2, ACC3, ACC4, ACC5, ACC6, ACC7, * - ACCG0123, ACCG4567, * - MSR0, MSR1, * - GNER0, GNER1, * - FNER0, FNER1, */ #define GDB_REG_GR(N) (N) #define GDB_REG_FR(N) (64+(N)) #define GDB_REG_PC 128 #define GDB_REG_PSR 129 #define GDB_REG_CCR 130 #define GDB_REG_CCCR 131 #define GDB_REG_TBR 135 #define GDB_REG_BRR 136 #define GDB_REG_DBAR(N) (137+(N)) #define GDB_REG_SCR(N) (141+(N)) #define GDB_REG_LR 145 #define GDB_REG_LCR 146 #define GDB_REG_FSR0 149 #define GDB_REG_ACC(N) (150+(N)) #define GDB_REG_ACCG(N) (158+(N)/4) #define GDB_REG_MSR(N) (160+(N)) #define GDB_REG_GNER(N) (162+(N)) #define GDB_REG_FNER(N) (164+(N)) #define GDB_REG_SP GDB_REG_GR(1) #define GDB_REG_FP GDB_REG_GR(2) #ifndef _LANGUAGE_ASSEMBLY /* * Prototypes */ extern void show_registers_only(struct pt_regs *regs); extern void gdbstub_init(void); extern void gdbstub(int type); extern void gdbstub_exit(int status); extern void gdbstub_io_init(void); extern void gdbstub_set_baud(unsigned baud); extern int gdbstub_rx_char(unsigned char *_ch, int nonblock); extern void gdbstub_tx_char(unsigned char ch); extern void gdbstub_tx_flush(void); extern void gdbstub_do_rx(void); extern asmlinkage void __debug_stub_init_break(void); extern asmlinkage void __break_hijack_kernel_event(void); extern asmlinkage void __break_hijack_kernel_event_breaks_here(void); extern asmlinkage void start_kernel(void); extern asmlinkage void gdbstub_rx_handler(void); extern asmlinkage void gdbstub_rx_irq(void); extern asmlinkage void gdbstub_intercept(void); extern uint32_t __entry_usertrap_table[]; extern uint32_t __entry_kerneltrap_table[]; extern volatile u8 gdbstub_rx_buffer[PAGE_SIZE]; extern volatile u32 gdbstub_rx_inp; extern volatile u32 gdbstub_rx_outp; extern volatile u8 gdbstub_rx_overflow; extern u8 gdbstub_rx_unget; extern void gdbstub_printk(const char *fmt, ...); extern void debug_to_serial(const char *p, int n); extern void console_set_baud(unsigned baud); #ifdef GDBSTUB_DEBUG_PROTOCOL #define gdbstub_proto(FMT,...) gdbstub_printk(FMT,##__VA_ARGS__) #else #define gdbstub_proto(FMT,...) ({ 0; }) #endif /* * we dedicate GR31 to keeping a pointer to the gdbstub exception frame * - gr31 is destroyed on entry to the gdbstub if !MMU * - gr31 is saved in scr3 on entry to the gdbstub if in !MMU */ register struct frv_frame0 *__debug_frame0 asm("gr31"); #define __debug_frame (&__debug_frame0->regs) #define __debug_user_context (&__debug_frame0->uc) #define __debug_regs (&__debug_frame0->debug) #define __debug_reg(X) ((unsigned long *) ((unsigned long) &__debug_frame0 + (X))) struct frv_debug_status { unsigned long bpsr; unsigned long dcr; unsigned long brr; unsigned long nmar; }; extern struct frv_debug_status __debug_status; #endif /* _LANGUAGE_ASSEMBLY */ #endif /* __ASM_GDB_STUB_H */