target-arm/op_addsub.h

   1 /*
   2  * ARMv6 integer SIMD operations.
   3  *
   4  * Copyright (c) 2007 CodeSourcery.
   5  * Written by Paul Brook
   6  *
   7  * This code is licenced under the GPL.
   8  */
   9
  10 #ifdef ARITH_GE
  11 #define GE_ARG , void *gep
  12 #define DECLARE_GE uint32_t ge = 0
  13 #define SET_GE *(uint32_t *)gep = ge
  14 #else
  15 #define GE_ARG
  16 #define DECLARE_GE do{}while(0)
  17 #define SET_GE do{}while(0)
  18 #endif
  19
  20 #define RESULT(val, n, width) \
  21     res |= ((uint32_t)(glue(glue(uint,width),_t))(val)) << (n * width)
  22
  23 uint32_t HELPER(glue(PFX,add16))(uint32_t a, uint32_t b GE_ARG)
  24 {
  25     uint32_t res = 0;
  26     DECLARE_GE;
  27
  28     ADD16(a, b, 0);
  29     ADD16(a >> 16, b >> 16, 1);
  30     SET_GE;
  31     return res;
  32 }
  33
  34 uint32_t HELPER(glue(PFX,add8))(uint32_t a, uint32_t b GE_ARG)
  35 {
  36     uint32_t res = 0;
  37     DECLARE_GE;
  38
  39     ADD8(a, b, 0);
  40     ADD8(a >> 8, b >> 8, 1);
  41     ADD8(a >> 16, b >> 16, 2);
  42     ADD8(a >> 24, b >> 24, 3);
  43     SET_GE;
  44     return res;
  45 }
  46
  47 uint32_t HELPER(glue(PFX,sub16))(uint32_t a, uint32_t b GE_ARG)
  48 {
  49     uint32_t res = 0;
  50     DECLARE_GE;
  51
  52     SUB16(a, b, 0);
  53     SUB16(a >> 16, b >> 16, 1);
  54     SET_GE;
  55     return res;
  56 }
  57
  58 uint32_t HELPER(glue(PFX,sub8))(uint32_t a, uint32_t b GE_ARG)
  59 {
  60     uint32_t res = 0;
  61     DECLARE_GE;
  62
  63     SUB8(a, b, 0);
  64     SUB8(a >> 8, b >> 8, 1);
  65     SUB8(a >> 16, b >> 16, 2);
  66     SUB8(a >> 24, b >> 24, 3);
  67     SET_GE;
  68     return res;
  69 }
  70
  71 uint32_t HELPER(glue(PFX,subaddx))(uint32_t a, uint32_t b GE_ARG)
  72 {
  73     uint32_t res = 0;
  74     DECLARE_GE;
  75
  76     ADD16(a, b >> 16, 0);
  77     SUB16(a >> 16, b, 1);
  78     SET_GE;
  79     return res;
  80 }
  81
  82 uint32_t HELPER(glue(PFX,addsubx))(uint32_t a, uint32_t b GE_ARG)
  83 {
  84     uint32_t res = 0;
  85     DECLARE_GE;
  86
  87     SUB16(a, b >> 16, 0);
  88     ADD16(a >> 16, b, 1);
  89     SET_GE;
  90     return res;
  91 }
  92
  93 #undef GE_ARG
  94 #undef DECLARE_GE
  95 #undef SET_GE
  96 #undef RESULT
  97
  98 #undef ARITH_GE
  99 #undef PFX
 100 #undef ADD16
 101 #undef SUB16
 102 #undef ADD8
 103 #undef SUB8