lldb/test/Shell/Register/Inputs/x86-mm-xmm-write.cpp

   1 #include <cinttypes>
   2 #include <cstdint>
   3 #include <cstdio>
   4
   5 union alignas(16) xmm_t {
   6   uint64_t as_uint64[2];
   7   uint8_t as_uint8[16];
   8 };
   9
  10 int main() {
  11   constexpr xmm_t xmm_fill = {
  12     .as_uint64 = { 0, 0 }
  13   };
  14
  15   uint64_t mm[8];
  16   xmm_t xmm[8];
  17
  18   asm volatile(
  19     "movq    %2, %%mm0\n\t"
  20     "movq    %2, %%mm1\n\t"
  21     "movq    %2, %%mm2\n\t"
  22     "movq    %2, %%mm3\n\t"
  23     "movq    %2, %%mm4\n\t"
  24     "movq    %2, %%mm5\n\t"
  25     "movq    %2, %%mm6\n\t"
  26     "movq    %2, %%mm7\n\t"
  27     "\n\t"
  28     "movaps  %2, %%xmm0\n\t"
  29     "movaps  %2, %%xmm1\n\t"
  30     "movaps  %2, %%xmm2\n\t"
  31     "movaps  %2, %%xmm3\n\t"
  32     "movaps  %2, %%xmm4\n\t"
  33     "movaps  %2, %%xmm5\n\t"
  34     "movaps  %2, %%xmm6\n\t"
  35     "movaps  %2, %%xmm7\n\t"
  36     "\n\t"
  37     "int3\n\t"
  38     "\n\t"
  39     "movq    %%mm0, 0x00(%0)\n\t"
  40     "movq    %%mm1, 0x08(%0)\n\t"
  41     "movq    %%mm2, 0x10(%0)\n\t"
  42     "movq    %%mm3, 0x18(%0)\n\t"
  43     "movq    %%mm4, 0x20(%0)\n\t"
  44     "movq    %%mm5, 0x28(%0)\n\t"
  45     "movq    %%mm6, 0x30(%0)\n\t"
  46     "movq    %%mm7, 0x38(%0)\n\t"
  47     "\n\t"
  48     "movaps  %%xmm0, 0x00(%1)\n\t"
  49     "movaps  %%xmm1, 0x10(%1)\n\t"
  50     "movaps  %%xmm2, 0x20(%1)\n\t"
  51     "movaps  %%xmm3, 0x30(%1)\n\t"
  52     "movaps  %%xmm4, 0x40(%1)\n\t"
  53     "movaps  %%xmm5, 0x50(%1)\n\t"
  54     "movaps  %%xmm6, 0x60(%1)\n\t"
  55     "movaps  %%xmm7, 0x70(%1)\n\t"
  56     :
  57     : "a"(mm), "b"(xmm), "m"(xmm_fill)
  58     : "%mm0", "%mm1", "%mm2", "%mm3", "%mm4", "%mm5", "%mm6", "%mm7", "%xmm0",
  59       "%xmm1", "%xmm2", "%xmm3", "%xmm4", "%xmm5", "%xmm6", "%xmm7"
  60   );
  61
  62   for (int i = 0; i < 8; ++i)
  63     printf("mm%d = 0x%016" PRIx64 "\n", i, mm[i]);
  64   for (int i = 0; i < 8; ++i) {
  65     printf("xmm%d = { ", i);
  66     for (int j = 0; j < sizeof(xmm->as_uint8); ++j)
  67       printf("0x%02x ", xmm[i].as_uint8[j]);
  68     printf("}\n");
  69   }
  70
  71   return 0;
  72 }