regdef.h

   1 /*
   2  * Alpha optimized DSP utils
   3  * copyright (c) 2002 Falk Hueffner <falk@debian.org>
   4  *
   5  * This file is part of FFmpeg.
   6  *
   7  * FFmpeg is free software; you can redistribute it and/or
   8  * modify it under the terms of the GNU Lesser General Public
   9  * License as published by the Free Software Foundation; either
  10  * version 2.1 of the License, or (at your option) any later version.
  11  *
  12  * FFmpeg is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  15  * Lesser General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU Lesser General Public
  18  * License along with FFmpeg; if not, write to the Free Software
  19  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  20  */
  21
  22 /* Some BSDs don't seem to have regdef.h... sigh  */
  23 #ifndef AVCODEC_ALPHA_REGDEF_H
  24 #define AVCODEC_ALPHA_REGDEF_H
  25
  26 #define v0      $0      /* function return value */
  27
  28 #define t0      $1      /* temporary registers (caller-saved) */
  29 #define t1      $2
  30 #define t2      $3
  31 #define t3      $4
  32 #define t4      $5
  33 #define t5      $6
  34 #define t6      $7
  35 #define t7      $8
  36
  37 #define s0      $9      /* saved-registers (callee-saved registers) */
  38 #define s1      $10
  39 #define s2      $11
  40 #define s3      $12
  41 #define s4      $13
  42 #define s5      $14
  43 #define s6      $15
  44 #define fp      s6      /* frame-pointer (s6 in frame-less procedures) */
  45
  46 #define a0      $16     /* argument registers (caller-saved) */
  47 #define a1      $17
  48 #define a2      $18
  49 #define a3      $19
  50 #define a4      $20
  51 #define a5      $21
  52
  53 #define t8      $22     /* more temps (caller-saved) */
  54 #define t9      $23
  55 #define t10     $24
  56 #define t11     $25
  57 #define ra      $26     /* return address register */
  58 #define t12     $27
  59
  60 #define pv      t12     /* procedure-variable register */
  61 #define AT      $at     /* assembler temporary */
  62 #define gp      $29     /* global pointer */
  63 #define sp      $30     /* stack pointer */
  64 #define zero    $31     /* reads as zero, writes are noops */
  65
  66 /* Some nicer register names.  */
  67 #define ta t10
  68 #define tb t11
  69 #define tc t12
  70 #define td AT
  71 /* Danger: these overlap with the argument list and the return value */
  72 #define te a5
  73 #define tf a4
  74 #define tg a3
  75 #define th v0
  76
  77 #endif /* AVCODEC_ALPHA_REGDEF_H */