i386/linux-2.3.21/arch/alpha/kernel/fpreg.c

   1 /*
   2  * arch/alpha/kernel/fpreg.c
   3  *
   4  * (C) Copyright 1998 Linus Torvalds
   5  */
   6
   7 #if defined(__alpha_cix__) || defined(__alpha_fix__)
   8 #define STT(reg,val)  asm volatile ("ftoit $f"#reg",%0" : "=r"(val));
   9 #else
  10 #define STT(reg,val)  asm volatile ("stt $f"#reg",%0" : "=m"(val));
  11 #endif
  12
  13 unsigned long
  14 alpha_read_fp_reg (unsigned long reg)
  15 {
  16         unsigned long val;
  17
  18         switch (reg) {
  19               case  0: STT( 0, val); break;
  20               case  1: STT( 1, val); break;
  21               case  2: STT( 2, val); break;
  22               case  3: STT( 3, val); break;
  23               case  4: STT( 4, val); break;
  24               case  5: STT( 5, val); break;
  25               case  6: STT( 6, val); break;
  26               case  7: STT( 7, val); break;
  27               case  8: STT( 8, val); break;
  28               case  9: STT( 9, val); break;
  29               case 10: STT(10, val); break;
  30               case 11: STT(11, val); break;
  31               case 12: STT(12, val); break;
  32               case 13: STT(13, val); break;
  33               case 14: STT(14, val); break;
  34               case 15: STT(15, val); break;
  35               case 16: STT(16, val); break;
  36               case 17: STT(17, val); break;
  37               case 18: STT(18, val); break;
  38               case 19: STT(19, val); break;
  39               case 20: STT(20, val); break;
  40               case 21: STT(21, val); break;
  41               case 22: STT(22, val); break;
  42               case 23: STT(23, val); break;
  43               case 24: STT(24, val); break;
  44               case 25: STT(25, val); break;
  45               case 26: STT(26, val); break;
  46               case 27: STT(27, val); break;
  47               case 28: STT(28, val); break;
  48               case 29: STT(29, val); break;
  49               case 30: STT(30, val); break;
  50               case 31: STT(31, val); break;
  51         }
  52         return val;
  53 }
  54
  55 #if defined(__alpha_cix__) || defined(__alpha_fix__)
  56 #define LDT(reg,val)  asm volatile ("itoft %0,$f"#reg : : "r"(val));
  57 #else
  58 #define LDT(reg,val)  asm volatile ("ldt $f"#reg",%0" : : "m"(val));
  59 #endif
  60
  61 void
  62 alpha_write_fp_reg (unsigned long reg, unsigned long val)
  63 {
  64         switch (reg) {
  65               case  0: LDT( 0, val); break;
  66               case  1: LDT( 1, val); break;
  67               case  2: LDT( 2, val); break;
  68               case  3: LDT( 3, val); break;
  69               case  4: LDT( 4, val); break;
  70               case  5: LDT( 5, val); break;
  71               case  6: LDT( 6, val); break;
  72               case  7: LDT( 7, val); break;
  73               case  8: LDT( 8, val); break;
  74               case  9: LDT( 9, val); break;
  75               case 10: LDT(10, val); break;
  76               case 11: LDT(11, val); break;
  77               case 12: LDT(12, val); break;
  78               case 13: LDT(13, val); break;
  79               case 14: LDT(14, val); break;
  80               case 15: LDT(15, val); break;
  81               case 16: LDT(16, val); break;
  82               case 17: LDT(17, val); break;
  83               case 18: LDT(18, val); break;
  84               case 19: LDT(19, val); break;
  85               case 20: LDT(20, val); break;
  86               case 21: LDT(21, val); break;
  87               case 22: LDT(22, val); break;
  88               case 23: LDT(23, val); break;
  89               case 24: LDT(24, val); break;
  90               case 25: LDT(25, val); break;
  91               case 26: LDT(26, val); break;
  92               case 27: LDT(27, val); break;
  93               case 28: LDT(28, val); break;
  94               case 29: LDT(29, val); break;
  95               case 30: LDT(30, val); break;
  96               case 31: LDT(31, val); break;
  97         }
  98 }