7ca8b9c0da
Extend gdbstub to support more features of gdb remote protocol to keep
gdb-7 and emacs gud mode happy:
(*) The D command. Detach debugger.
(*) The H command. Handle setting the target thread by ignoring it.
(*) The qAttached command. Indicate we 'attached' to an existing process.
(*) The qC command. Indicate that the current thread ID is 0.
(*) The qOffsets command. Indicate that no relocation has been done.
(*) The qSymbol:: command. Indicate that we're not interested in looking up
any symbol addresses.
(*) The qSupported command. Indicate the maximum packet size and the fact
that reverse step and continue aren't supported.
(*) The vCont? command. Indicate that we don't support any of its variants.
Also make it possible to trace the commands and replies without tracing
the individual character I/O.
[akpm@linux-foundation.org: make gdbstub_handle_query() static]
Signed-off-by: David Howells <dhowells@redhat.com>
Cc: Jason Wessel <jason.wessel@windriver.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
146 lines
4.5 KiB
C
146 lines
4.5 KiB
C
/* 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_IO
|
|
#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 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_IO
|
|
#define gdbstub_io(FMT,...) gdbstub_printk(FMT, ##__VA_ARGS__)
|
|
#else
|
|
#define gdbstub_io(FMT,...) ({ 0; })
|
|
#endif
|
|
|
|
#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 */
|