arch/nios2nommu/kernel/nios_gdb_stub.h

   1 // file: nios_gdb_stub.h
   2 // Author: Altera Santa Cruz \ 2000
   3 //
   4 // You can modify this header file to
   5 // enable some features useful for
   6 // debugging the debugger. They're
   7 // good features also to just show
   8 // signs of life on your Nios board.
   9 // But they consume valuable peripherals!
  10 //
  11 // The 'GDB_DEBUG_PRINT' option ties
  12 // up the LCD living on the 5v port,
  13 // showing useful internals of the stub.
  14 //
  15 // dvb@altera.com
  16 //
  17
  18 #ifdef ETHER_DEBUG
  19 #ifdef na_enet
  20 #define ethernet_exists
  21 #endif
  22 #endif
  23
  24 #ifdef ETHER_DEBUG
  25 #ifdef ethernet_exists
  26 #include "plugs.h"
  27 #endif
  28 #endif
  29
  30 #define MAX_DATA_SIZE           650
  31 #define kTextBufferSize         ((2*MAX_DATA_SIZE)+4)
  32 #define kMaximumBreakpoints     4
  33 #define GDB_ETH_PORT            7070
  34 #define GDB_WHOLE_PACKET        0
  35 #define GDB_SKIP_FIRST          1
  36 #define GDB_RETRY_CNT           3
  37
  38 /*
  39  * This register structure must match
  40  * its counterpart in the GDB host, since
  41  * it is blasted across in byte notation.
  42  */
  43 typedef struct
  44         {
  45         int r[32];
  46         long pc;
  47         short ctl0;
  48         short ctl1;
  49         short ctl2;
  50         short ctl3;
  51         } NiosGDBRegisters;
  52
  53 typedef struct
  54         {
  55         short *address;
  56         short oldContents;
  57         } NiosGDBBreakpoint;
  58
  59 typedef struct
  60         {
  61         NiosGDBRegisters registers;
  62         int trapNumber;                         // stashed by ISR, to distinguish types
  63         char textBuffer[kTextBufferSize];
  64         int breakpointCount;                    // breakpoints used for stepping
  65         int comlink;
  66         int stop;
  67         int gdb_eth_plug;
  68         NiosGDBBreakpoint breakpoint[kMaximumBreakpoints];
  69 #ifdef ETHER_DEBUG
  70 #ifdef ethernet_exists
  71         volatile int ACKstatus;
  72         net_32 host_ip_address;
  73         net_16 host_port_number;
  74 #endif
  75 #endif
  76         } NiosGDBGlobals;
  77
  78 #ifdef ETHER_DEBUG
  79 #ifdef ethernet_exists
  80 enum
  81 {
  82         ne_gdb_ack_notwaiting,
  83         ne_gdb_ack_waiting,
  84         ne_gdb_ack_acked,
  85         ne_gdb_ack_nacked
  86 };
  87 #endif
  88 #endif
  89
  90 enum
  91 {
  92         ne_gdb_serial,
  93         ne_gdb_ethernet
  94 };
  95
  96 #ifndef GDB_DEBUG_PRINT
  97         #define GDB_DEBUG_PRINT 0
  98 #endif
  99
 100 void GDB_Main(void);    // initialize gdb and begin.
 101
 102 char GDBGetChar(void);
 103 void GDBPutChar(char c);
 104 void GDB_Print2(char *s,int v1,int v2);
 105