root/arch/alpha/include/uapi/asm/regdef.h

INCLUDED FROM

   1 /* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
   2 #ifndef __alpha_regdef_h__
   3 #define __alpha_regdef_h__
   4 
   5 #define v0      $0      /* function return value */
   6 
   7 #define t0      $1      /* temporary registers (caller-saved) */
   8 #define t1      $2
   9 #define t2      $3
  10 #define t3      $4
  11 #define t4      $5
  12 #define t5      $6
  13 #define t6      $7
  14 #define t7      $8
  15 
  16 #define s0      $9      /* saved-registers (callee-saved registers) */
  17 #define s1      $10
  18 #define s2      $11
  19 #define s3      $12
  20 #define s4      $13
  21 #define s5      $14
  22 #define s6      $15
  23 #define fp      s6      /* frame-pointer (s6 in frame-less procedures) */
  24 
  25 #define a0      $16     /* argument registers (caller-saved) */
  26 #define a1      $17
  27 #define a2      $18
  28 #define a3      $19
  29 #define a4      $20
  30 #define a5      $21
  31 
  32 #define t8      $22     /* more temps (caller-saved) */
  33 #define t9      $23
  34 #define t10     $24
  35 #define t11     $25
  36 #define ra      $26     /* return address register */
  37 #define t12     $27
  38 
  39 #define pv      t12     /* procedure-variable register */
  40 #define AT      $at     /* assembler temporary */
  41 #define gp      $29     /* global pointer */
  42 #define sp      $30     /* stack pointer */
  43 #define zero    $31     /* reads as zero, writes are noops */
  44 
  45 #endif /* __alpha_regdef_h__ */