include/asm-mips64/regdef.h

   1 /* $Id$
   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) 1985 MIPS Computer Systems, Inc.
   8  * Copyright (C) 1990 - 1992, 1999 Silicon Graphics, Inc.
   9  * Copyright (C) 1999 Ralf Baechle
  10  */
  11 #ifndef _ASM_REGDEF_H
  12 #define _ASM_REGDEF_H
  13
  14 #define zero    $0      /* wired zero */
  15 #define AT      $at     /* assembler temp - uppercase because of ".set at" */
  16 #define v0      $2      /* return value - caller saved */
  17 #define v1      $3
  18 #define a0      $4      /* argument registers */
  19 #define a1      $5
  20 #define a2      $6
  21 #define a3      $7
  22 #define a4      $8      /* arg reg 64 bit; caller saved in 32 bit */
  23 #define ta0     $8
  24 #define a5      $9
  25 #define ta1     $9
  26 #define a6      $10
  27 #define ta2     $10
  28 #define a7      $11
  29 #define ta3     $11
  30 #define t0      $12     /* caller saved */
  31 #define t1      $13
  32 #define t2      $14
  33 #define t3      $15
  34 #define s0      $16     /* callee saved */
  35 #define s1      $17
  36 #define s2      $18
  37 #define s3      $19
  38 #define s4      $20
  39 #define s5      $21
  40 #define s6      $22
  41 #define s7      $23
  42 #define t8      $24     /* caller saved */
  43 #define t9      $25     /* callee address for PIC/temp */
  44 #define jp      $25     /* PIC jump register */
  45 #define k0      $26     /* kernel temporary */
  46 #define k1      $27
  47 #define gp      $28     /* global pointer - caller saved for PIC */
  48 #define sp      $29     /* stack pointer */
  49 #define fp      $30     /* frame pointer */
  50 #define s8      $30     /* callee saved */
  51 #define ra      $31     /* return address */
  52
  53 #endif /* _ASM_REGDEF_H */