arch/blackfin/include/asm/kgdb.h

   1 /* Blackfin KGDB header
   2  *
   3  * Copyright 2005-2009 Analog Devices Inc.
   4  *
   5  * Licensed under the GPL-2 or later.
   6  */
   7
   8 #ifndef __ASM_BLACKFIN_KGDB_H__
   9 #define __ASM_BLACKFIN_KGDB_H__
  10
  11 #include <linux/ptrace.h>
  12
  13 /* gdb locks */
  14 #define KGDB_MAX_NO_CPUS 8
  15
  16 /*
  17  * BUFMAX defines the maximum number of characters in inbound/outbound buffers.
  18  * At least NUMREGBYTES*2 are needed for register packets.
  19  * Longer buffer is needed to list all threads.
  20  */
  21 #define BUFMAX 2048
  22
  23 /*
  24  * Note that this register image is different from
  25  * the register image that Linux produces at interrupt time.
  26  *
  27  * Linux's register image is defined by struct pt_regs in ptrace.h.
  28  */
  29 enum regnames {
  30   /* Core Registers */
  31   BFIN_R0 = 0,
  32   BFIN_R1,
  33   BFIN_R2,
  34   BFIN_R3,
  35   BFIN_R4,
  36   BFIN_R5,
  37   BFIN_R6,
  38   BFIN_R7,
  39   BFIN_P0,
  40   BFIN_P1,
  41   BFIN_P2,
  42   BFIN_P3,
  43   BFIN_P4,
  44   BFIN_P5,
  45   BFIN_SP,
  46   BFIN_FP,
  47   BFIN_I0,
  48   BFIN_I1,
  49   BFIN_I2,
  50   BFIN_I3,
  51   BFIN_M0,
  52   BFIN_M1,
  53   BFIN_M2,
  54   BFIN_M3,
  55   BFIN_B0,
  56   BFIN_B1,
  57   BFIN_B2,
  58   BFIN_B3,
  59   BFIN_L0,
  60   BFIN_L1,
  61   BFIN_L2,
  62   BFIN_L3,
  63   BFIN_A0_DOT_X,
  64   BFIN_A0_DOT_W,
  65   BFIN_A1_DOT_X,
  66   BFIN_A1_DOT_W,
  67   BFIN_ASTAT,
  68   BFIN_RETS,
  69   BFIN_LC0,
  70   BFIN_LT0,
  71   BFIN_LB0,
  72   BFIN_LC1,
  73   BFIN_LT1,
  74   BFIN_LB1,
  75   BFIN_CYCLES,
  76   BFIN_CYCLES2,
  77   BFIN_USP,
  78   BFIN_SEQSTAT,
  79   BFIN_SYSCFG,
  80   BFIN_RETI,
  81   BFIN_RETX,
  82   BFIN_RETN,
  83   BFIN_RETE,
  84
  85   /* Pseudo Registers */
  86   BFIN_PC,
  87   BFIN_CC,
  88   BFIN_EXTRA1,          /* Address of .text section.  */
  89   BFIN_EXTRA2,          /* Address of .data section.  */
  90   BFIN_EXTRA3,          /* Address of .bss section.  */
  91   BFIN_FDPIC_EXEC,
  92   BFIN_FDPIC_INTERP,
  93
  94   /* MMRs */
  95   BFIN_IPEND,
  96
  97   /* LAST ENTRY SHOULD NOT BE CHANGED.  */
  98   BFIN_NUM_REGS         /* The number of all registers.  */
  99 };
 100
 101 /* Number of bytes of registers.  */
 102 #define NUMREGBYTES BFIN_NUM_REGS*4
 103
 104 static inline void arch_kgdb_breakpoint(void)
 105 {
 106         asm("EXCPT 2;");
 107 }
 108 #define BREAK_INSTR_SIZE        2
 109 #define CACHE_FLUSH_IS_SAFE     1
 110 #define HW_INST_WATCHPOINT_NUM  6
 111 #define HW_WATCHPOINT_NUM       8
 112 #define TYPE_INST_WATCHPOINT    0
 113 #define TYPE_DATA_WATCHPOINT    1
 114
 115 /* Instruction watchpoint address control register bits mask */
 116 #define WPPWR           0x1
 117 #define WPIREN01        0x2
 118 #define WPIRINV01       0x4
 119 #define WPIAEN0         0x8
 120 #define WPIAEN1         0x10
 121 #define WPICNTEN0       0x20
 122 #define WPICNTEN1       0x40
 123 #define EMUSW0          0x80
 124 #define EMUSW1          0x100
 125 #define WPIREN23        0x200
 126 #define WPIRINV23       0x400
 127 #define WPIAEN2         0x800
 128 #define WPIAEN3         0x1000
 129 #define WPICNTEN2       0x2000
 130 #define WPICNTEN3       0x4000
 131 #define EMUSW2          0x8000
 132 #define EMUSW3          0x10000
 133 #define WPIREN45        0x20000
 134 #define WPIRINV45       0x40000
 135 #define WPIAEN4         0x80000
 136 #define WPIAEN5         0x100000
 137 #define WPICNTEN4       0x200000
 138 #define WPICNTEN5       0x400000
 139 #define EMUSW4          0x800000
 140 #define EMUSW5          0x1000000
 141 #define WPAND           0x2000000
 142
 143 /* Data watchpoint address control register bits mask */
 144 #define WPDREN01        0x1
 145 #define WPDRINV01       0x2
 146 #define WPDAEN0         0x4
 147 #define WPDAEN1         0x8
 148 #define WPDCNTEN0       0x10
 149 #define WPDCNTEN1       0x20
 150
 151 #define WPDSRC0         0xc0
 152 #define WPDACC0_OFFSET  8
 153 #define WPDSRC1         0xc00
 154 #define WPDACC1_OFFSET  12
 155
 156 /* Watchpoint status register bits mask */
 157 #define STATIA0         0x1
 158 #define STATIA1         0x2
 159 #define STATIA2         0x4
 160 #define STATIA3         0x8
 161 #define STATIA4         0x10
 162 #define STATIA5         0x20
 163 #define STATDA0         0x40
 164 #define STATDA1         0x80
 165
 166 #endif