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TOMOYO Linux Cross Reference
Linux/arch/frv/include/asm/gdb-stub.h

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  1 /* gdb-stub.h: FRV GDB stub
  2  *
  3  * Copyright (C) 2003 Red Hat, Inc. All Rights Reserved.
  4  * Written by David Howells (dhowells@redhat.com)
  5  * - Derived from asm-mips/gdb-stub.h (c) 1995 Andreas Busse
  6  *
  7  * This program is free software; you can redistribute it and/or
  8  * modify it under the terms of the GNU General Public License
  9  * as published by the Free Software Foundation; either version
 10  * 2 of the License, or (at your option) any later version.
 11  */
 12 #ifndef __ASM_GDB_STUB_H
 13 #define __ASM_GDB_STUB_H
 14 
 15 #undef GDBSTUB_DEBUG_IO
 16 #undef GDBSTUB_DEBUG_PROTOCOL
 17 
 18 #include <asm/ptrace.h>
 19 
 20 /*
 21  * important register numbers in GDB protocol
 22  * - GR0,  GR1,  GR2,  GR3,  GR4,  GR5,  GR6,  GR7,
 23  * - GR8,  GR9,  GR10, GR11, GR12, GR13, GR14, GR15,
 24  * - GR16, GR17, GR18, GR19, GR20, GR21, GR22, GR23,
 25  * - GR24, GR25, GR26, GR27, GR28, GR29, GR30, GR31,
 26  * - GR32, GR33, GR34, GR35, GR36, GR37, GR38, GR39,
 27  * - GR40, GR41, GR42, GR43, GR44, GR45, GR46, GR47,
 28  * - GR48, GR49, GR50, GR51, GR52, GR53, GR54, GR55,
 29  * - GR56, GR57, GR58, GR59, GR60, GR61, GR62, GR63,
 30  * - FR0,  FR1,  FR2,  FR3,  FR4,  FR5,  FR6,  FR7,
 31  * - FR8,  FR9,  FR10, FR11, FR12, FR13, FR14, FR15,
 32  * - FR16, FR17, FR18, FR19, FR20, FR21, FR22, FR23,
 33  * - FR24, FR25, FR26, FR27, FR28, FR29, FR30, FR31,
 34  * - FR32, FR33, FR34, FR35, FR36, FR37, FR38, FR39,
 35  * - FR40, FR41, FR42, FR43, FR44, FR45, FR46, FR47,
 36  * - FR48, FR49, FR50, FR51, FR52, FR53, FR54, FR55,
 37  * - FR56, FR57, FR58, FR59, FR60, FR61, FR62, FR63,
 38  * - PC, PSR, CCR, CCCR,
 39  * - _X132, _X133, _X134
 40  * - TBR, BRR, DBAR0, DBAR1, DBAR2, DBAR3,
 41  * - SCR0, SCR1, SCR2, SCR3,
 42  * - LR, LCR,
 43  * - IACC0H, IACC0L,
 44  * - FSR0,
 45  * - ACC0, ACC1, ACC2, ACC3, ACC4, ACC5, ACC6, ACC7,
 46  * - ACCG0123, ACCG4567,
 47  * - MSR0, MSR1,
 48  * - GNER0, GNER1,
 49  * - FNER0, FNER1,
 50  */
 51 #define GDB_REG_GR(N)   (N)
 52 #define GDB_REG_FR(N)   (64+(N))
 53 #define GDB_REG_PC      128
 54 #define GDB_REG_PSR     129
 55 #define GDB_REG_CCR     130
 56 #define GDB_REG_CCCR    131
 57 #define GDB_REG_TBR     135
 58 #define GDB_REG_BRR     136
 59 #define GDB_REG_DBAR(N) (137+(N))
 60 #define GDB_REG_SCR(N)  (141+(N))
 61 #define GDB_REG_LR      145
 62 #define GDB_REG_LCR     146
 63 #define GDB_REG_FSR0    149
 64 #define GDB_REG_ACC(N)  (150+(N))
 65 #define GDB_REG_ACCG(N) (158+(N)/4)
 66 #define GDB_REG_MSR(N)  (160+(N))
 67 #define GDB_REG_GNER(N) (162+(N))
 68 #define GDB_REG_FNER(N) (164+(N))
 69 
 70 #define GDB_REG_SP      GDB_REG_GR(1)
 71 #define GDB_REG_FP      GDB_REG_GR(2)
 72 
 73 #ifndef _LANGUAGE_ASSEMBLY
 74 
 75 /*
 76  * Prototypes
 77  */
 78 extern void show_registers_only(struct pt_regs *regs);
 79 
 80 extern void gdbstub_init(void);
 81 extern void gdbstub(int type);
 82 extern void gdbstub_exit(int status);
 83 
 84 extern void gdbstub_io_init(void);
 85 extern void gdbstub_set_baud(unsigned baud);
 86 extern int gdbstub_rx_char(unsigned char *_ch, int nonblock);
 87 extern void gdbstub_tx_char(unsigned char ch);
 88 extern void gdbstub_tx_flush(void);
 89 extern void gdbstub_do_rx(void);
 90 
 91 extern asmlinkage void __debug_stub_init_break(void);
 92 extern asmlinkage void __break_hijack_kernel_event(void);
 93 extern asmlinkage void __break_hijack_kernel_event_breaks_here(void);
 94 
 95 extern asmlinkage void gdbstub_rx_handler(void);
 96 extern asmlinkage void gdbstub_rx_irq(void);
 97 extern asmlinkage void gdbstub_intercept(void);
 98 
 99 extern uint32_t __entry_usertrap_table[];
100 extern uint32_t __entry_kerneltrap_table[];
101 
102 extern volatile u8      gdbstub_rx_buffer[PAGE_SIZE];
103 extern volatile u32     gdbstub_rx_inp;
104 extern volatile u32     gdbstub_rx_outp;
105 extern volatile u8      gdbstub_rx_overflow;
106 extern u8               gdbstub_rx_unget;
107 
108 extern void gdbstub_printk(const char *fmt, ...);
109 extern void debug_to_serial(const char *p, int n);
110 extern void console_set_baud(unsigned baud);
111 
112 #ifdef GDBSTUB_DEBUG_IO
113 #define gdbstub_io(FMT,...) gdbstub_printk(FMT, ##__VA_ARGS__)
114 #else
115 #define gdbstub_io(FMT,...) ({ 0; })
116 #endif
117 
118 #ifdef GDBSTUB_DEBUG_PROTOCOL
119 #define gdbstub_proto(FMT,...) gdbstub_printk(FMT,##__VA_ARGS__)
120 #else
121 #define gdbstub_proto(FMT,...) ({ 0; })
122 #endif
123 
124 /*
125  * we dedicate GR31 to keeping a pointer to the gdbstub exception frame
126  * - gr31 is destroyed on entry to the gdbstub if !MMU
127  * - gr31 is saved in scr3 on entry to the gdbstub if in !MMU
128  */
129 register struct frv_frame0 *__debug_frame0 asm("gr31");
130 
131 #define __debug_frame           (&__debug_frame0->regs)
132 #define __debug_user_context    (&__debug_frame0->uc)
133 #define __debug_regs            (&__debug_frame0->debug)
134 #define __debug_reg(X)          ((unsigned long *) ((unsigned long) &__debug_frame0 + (X)))
135 
136 struct frv_debug_status {
137         unsigned long           bpsr;
138         unsigned long           dcr;
139         unsigned long           brr;
140         unsigned long           nmar;
141 };
142 
143 extern struct frv_debug_status __debug_status;
144 
145 #endif /* _LANGUAGE_ASSEMBLY */
146 #endif /* __ASM_GDB_STUB_H */
147 

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