arch/nios2nommu/kernel/nios_gdb_stub_io.c

   1 // Modified for uClinux - Vic - Apr 2002
   2 // From:
   3
   4 // file: nios_gdb_stub_IO.c
   5 //
   6 // Single character I/O for Nios GDB Stub
   7
   8 #ifndef __KERNEL__
   9 #include "nios.h"
  10 #else
  11 #include <asm/nios.h>
  12 #endif
  13
  14 #include "nios_gdb_stub.h"
  15
  16 #ifdef nasys_debug_uart
  17         #define GDB_UART nasys_debug_uart
  18 #endif
  19
  20 char GDBGetChar(void)
  21 {
  22         char c = 0;
  23
  24 #ifdef GDB_UART
  25         while( (c = (char)nr_uart_rxchar(GDB_UART)) < 0 )
  26                         ;
  27 #endif
  28
  29         return c;
  30 }
  31
  32 void GDBPutChar(char c)
  33 {
  34 #ifdef GDB_UART
  35         nr_uart_txchar(c, GDB_UART);
  36 #endif
  37 }
  38
  39 // End of file