include/asm-mips/current.h

   1 /* $Id: current.h,v 1.4 1998/07/20 17:52:19 ralf Exp $
   2  *
   3  * This file is subject to the terms and conditions of the GNU General Public
   4  * License.  See the file "COPYING" in the main directory of this archive
   5  * for more details.
   6  *
   7  * Copyright (C) 1998 Ralf Baechle
   8  */
   9 #ifndef __ASM_MIPS_CURRENT_H
  10 #define __ASM_MIPS_CURRENT_H
  11
  12 #ifdef _LANGUAGE_C
  13
  14 /* MIPS rules... */
  15 register struct task_struct *current asm("$28");
  16
  17 #endif /* _LANGUAGE_C */
  18 #ifdef _LANGUAGE_ASSEMBLY
  19
  20 /*
  21  * Special variant for use by exception handlers when the stack pointer
  22  * is not loaded.
  23  */
  24 #define _GET_CURRENT(reg)                       \
  25         lui     reg, %hi(kernelsp);             \
  26         .set    push;                           \
  27         .set    noreorder;                      \
  28         lw      reg, %lo(kernelsp)(reg);        \
  29         .set    pop;                            \
  30         ori     reg, 8191;                      \
  31         xori    reg, 8191
  32
  33 #endif
  34
  35 #endif /* __ASM_MIPS_CURRENT_H */