libgloss/mips/idtmon.S

   1 /*
   2  * idtmon.S -- lo-level entry points into IDT monitor.
   3  *
   4  * Copyright (c) 1996 Cygnus Support
   5  *
   6  * The authors hereby grant permission to use, copy, modify, distribute,
   7  * and license this software and its documentation for any purpose, provided
   8  * that existing copyright notices are retained in all copies and that this
   9  * notice is included verbatim in any distributions. No written agreement,
  10  * license, or royalty fee is required for any of the authorized uses.
  11  * Modifications to this software may be copyrighted by their authors
  12  * and need not follow the licensing terms described here, provided that
  13  * the new terms are clearly indicated on the first page of each file where
  14  * they apply.
  15  */
  16
  17 #ifdef __mips16
  18 /* This file contains 32 bit assembly code.  */
  19         .set nomips16
  20 #endif
  21
  22 #include "regs.S"
  23
  24         .text
  25         .align  2
  26
  27 /* Provide named functions for entry into the IDT monitor: */
  28 #define INDIRECT(name,index)                    \
  29         .globl  name;                           \
  30         .ent    name;                           \
  31 name:   la      $2,+(0xbfc00000+((index)*8));   \
  32         j       $2;                             \
  33         .end name
  34
  35 /* The following magic numbers are for the slots into the IDT monitor: */
  36 INDIRECT(open,6)
  37 INDIRECT(read,7)
  38 INDIRECT(write,8)
  39 INDIRECT(close,10)
  40 INDIRECT(inbyte,11)
  41 INDIRECT(outbyte,12)
  42 INDIRECT(mon_printf,16)
  43 INDIRECT(_flush_cache,28)
  44 INDIRECT(get_mem_info,55)       /* expects pointer to three word vector */
  45
  46 /* EOF idtmon.S */