include/asm-sparc/kgdb.h

   1 /* $Id: kgdb.h,v 1.8 1998/01/07 06:33:44 baccala Exp $
   2  * kgdb.h: Defines and declarations for serial line source level
   3  *         remote debugging of the Linux kernel using gdb.
   4  *
   5  * Copyright (C) 1995 David S. Miller (davem@caip.rutgers.edu)
   6  */
   7 #ifndef _SPARC_KGDB_H
   8 #define _SPARC_KGDB_H
   9
  10 #ifndef __ASSEMBLY__
  11 /* To init the kgdb engine. */
  12 extern void set_debug_traps(void);
  13
  14 /* To enter the debugger explicitly. */
  15 extern void breakpoint(void);
  16
  17 /* For convenience we define the format of a kgdb trap breakpoint
  18  * frame here also.
  19  */
  20 struct kgdb_frame {
  21         unsigned long globals[8];
  22         unsigned long outs[8];
  23         unsigned long locals[8];
  24         unsigned long ins[8];
  25         unsigned long fpregs[32];
  26         unsigned long y;
  27         unsigned long psr;
  28         unsigned long wim;
  29         unsigned long tbr;
  30         unsigned long pc;
  31         unsigned long npc;
  32         unsigned long fpsr;
  33         unsigned long cpsr;
  34 };
  35 #endif /* !(__ASSEMBLY__) */
  36
  37 /* Macros for assembly usage of the kgdb breakpoint frame. */
  38 #define KGDB_G0     0x000
  39 #define KGDB_G1     0x004
  40 #define KGDB_G2     0x008
  41 #define KGDB_G4     0x010
  42 #define KGDB_G6     0x018
  43 #define KGDB_I0     0x020
  44 #define KGDB_I2     0x028
  45 #define KGDB_I4     0x030
  46 #define KGDB_I6     0x038
  47 #define KGDB_Y      0x100
  48 #define KGDB_PSR    0x104
  49 #define KGDB_WIM    0x108
  50 #define KGDB_TBR    0x10c
  51 #define KGDB_PC     0x110
  52 #define KGDB_NPC    0x114
  53
  54 #define SAVE_KGDB_GLOBALS(reg) \
  55         std     %g0, [%reg + STACKFRAME_SZ + KGDB_G0]; \
  56         std     %g2, [%reg + STACKFRAME_SZ + KGDB_G2]; \
  57         std     %g4, [%reg + STACKFRAME_SZ + KGDB_G4]; \
  58         std     %g6, [%reg + STACKFRAME_SZ + KGDB_G6];
  59
  60 #define SAVE_KGDB_INS(reg) \
  61         std     %i0, [%reg + STACKFRAME_SZ + KGDB_I0]; \
  62         std     %i2, [%reg + STACKFRAME_SZ + KGDB_I2]; \
  63         std     %i4, [%reg + STACKFRAME_SZ + KGDB_I4]; \
  64         std     %i6, [%reg + STACKFRAME_SZ + KGDB_I6];
  65
  66 #define SAVE_KGDB_SREGS(reg, reg_y, reg_psr, reg_wim, reg_tbr, reg_pc, reg_npc) \
  67         st      %reg_y, [%reg + STACKFRAME_SZ + KGDB_Y]; \
  68         st      %reg_psr, [%reg + STACKFRAME_SZ + KGDB_PSR]; \
  69         st      %reg_wim, [%reg + STACKFRAME_SZ + KGDB_WIM]; \
  70         st      %reg_tbr, [%reg + STACKFRAME_SZ + KGDB_TBR]; \
  71         st      %reg_pc, [%reg + STACKFRAME_SZ + KGDB_PC]; \
  72         st      %reg_npc, [%reg + STACKFRAME_SZ + KGDB_NPC];
  73
  74 #define LOAD_KGDB_GLOBALS(reg) \
  75         ld      [%reg + STACKFRAME_SZ + KGDB_G1], %g1; \
  76         ldd     [%reg + STACKFRAME_SZ + KGDB_G2], %g2; \
  77         ldd     [%reg + STACKFRAME_SZ + KGDB_G4], %g4; \
  78         ldd     [%reg + STACKFRAME_SZ + KGDB_G6], %g6;
  79
  80 #define LOAD_KGDB_INS(reg) \
  81         ldd     [%reg + STACKFRAME_SZ + KGDB_I0], %i0; \
  82         ldd     [%reg + STACKFRAME_SZ + KGDB_I2], %i2; \
  83         ldd     [%reg + STACKFRAME_SZ + KGDB_I4], %i4; \
  84         ldd     [%reg + STACKFRAME_SZ + KGDB_I6], %i6;
  85
  86 #define LOAD_KGDB_SREGS(reg, reg_y, reg_psr, reg_wim, reg_tbr, reg_pc, reg_npc) \
  87         ld      [%reg + STACKFRAME_SZ + KGDB_Y], %reg_y; \
  88         ld      [%reg + STACKFRAME_SZ + KGDB_PSR], %reg_psr; \
  89         ld      [%reg + STACKFRAME_SZ + KGDB_WIM], %reg_wim; \
  90         ld      [%reg + STACKFRAME_SZ + KGDB_TBR], %reg_tbr; \
  91         ld      [%reg + STACKFRAME_SZ + KGDB_PC], %reg_pc; \
  92         ld      [%reg + STACKFRAME_SZ + KGDB_NPC], %reg_npc;
  93
  94 #endif /* !(_SPARC_KGDB_H) */