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#include <cinttypes>
#include <cstdint>
#include <cstdio>
union alignas(16) xmm_t {
uint64_t as_uint64[2];
uint8_t as_uint8[16];
};
int main() {
constexpr xmm_t xmm_fill = {
.as_uint64 = { 0, 0 }
};
uint64_t mm[8];
xmm_t xmm[8];
asm volatile(
"movq %2, %%mm0\n\t"
"movq %2, %%mm1\n\t"
"movq %2, %%mm2\n\t"
"movq %2, %%mm3\n\t"
"movq %2, %%mm4\n\t"
"movq %2, %%mm5\n\t"
"movq %2, %%mm6\n\t"
"movq %2, %%mm7\n\t"
"\n\t"
"movaps %2, %%xmm0\n\t"
"movaps %2, %%xmm1\n\t"
"movaps %2, %%xmm2\n\t"
"movaps %2, %%xmm3\n\t"
"movaps %2, %%xmm4\n\t"
"movaps %2, %%xmm5\n\t"
"movaps %2, %%xmm6\n\t"
"movaps %2, %%xmm7\n\t"
"\n\t"
"int3\n\t"
"\n\t"
"movq %%mm0, 0x00(%0)\n\t"
"movq %%mm1, 0x08(%0)\n\t"
"movq %%mm2, 0x10(%0)\n\t"
"movq %%mm3, 0x18(%0)\n\t"
"movq %%mm4, 0x20(%0)\n\t"
"movq %%mm5, 0x28(%0)\n\t"
"movq %%mm6, 0x30(%0)\n\t"
"movq %%mm7, 0x38(%0)\n\t"
"\n\t"
"movaps %%xmm0, 0x00(%1)\n\t"
"movaps %%xmm1, 0x10(%1)\n\t"
"movaps %%xmm2, 0x20(%1)\n\t"
"movaps %%xmm3, 0x30(%1)\n\t"
"movaps %%xmm4, 0x40(%1)\n\t"
"movaps %%xmm5, 0x50(%1)\n\t"
"movaps %%xmm6, 0x60(%1)\n\t"
"movaps %%xmm7, 0x70(%1)\n\t"
:
: "a"(mm), "b"(xmm), "m"(xmm_fill)
: "%mm0", "%mm1", "%mm2", "%mm3", "%mm4", "%mm5", "%mm6", "%mm7", "%xmm0",
"%xmm1", "%xmm2", "%xmm3", "%xmm4", "%xmm5", "%xmm6", "%xmm7"
);
for (int i = 0; i < 8; ++i)
printf("mm%d = 0x%016" PRIx64 "\n", i, mm[i]);
for (int i = 0; i < 8; ++i) {
printf("xmm%d = { ", i);
for (int j = 0; j < sizeof(xmm->as_uint8); ++j)
printf("0x%02x ", xmm[i].as_uint8[j]);
printf("}\n");
}
return 0;
}
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