#include struct alignas(16) xmm_t { uint64_t a, b; }; int main() { constexpr uint64_t r8[] = { 0x0001020304050607, 0x1011121314151617, 0x2021222324252627, 0x3031323334353637, 0x4041424344454647, 0x5051525354555657, 0x6061626364656667, 0x7071727374757677, }; constexpr xmm_t xmm8[] = { { 0x0F0E0D0C0B0A0908, 0x1716151413121110, }, { 0x100F0E0D0C0B0A09, 0x1817161514131211, }, { 0x11100F0E0D0C0B0A, 0x1918171615141312, }, { 0x1211100F0E0D0C0B, 0x1A19181716151413, }, { 0x131211100F0E0D0C, 0x1B1A191817161514, }, { 0x14131211100F0E0D, 0x1C1B1A1918171615, }, { 0x1514131211100F0E, 0x1D1C1B1A19181716, }, { 0x161514131211100F, 0x1E1D1C1B1A191817, }, }; asm volatile( "movq 0x00(%0), %%r8\n\t" "movq 0x08(%0), %%r9\n\t" "movq 0x10(%0), %%r10\n\t" "movq 0x18(%0), %%r11\n\t" "movq 0x20(%0), %%r12\n\t" "movq 0x28(%0), %%r13\n\t" "movq 0x30(%0), %%r14\n\t" "movq 0x38(%0), %%r15\n\t" "\n\t" "movaps 0x00(%1), %%xmm8\n\t" "movaps 0x10(%1), %%xmm9\n\t" "movaps 0x20(%1), %%xmm10\n\t" "movaps 0x30(%1), %%xmm11\n\t" "movaps 0x40(%1), %%xmm12\n\t" "movaps 0x50(%1), %%xmm13\n\t" "movaps 0x60(%1), %%xmm14\n\t" "movaps 0x70(%1), %%xmm15\n\t" "\n\t" "int3\n\t" : : "a"(r8), "b"(xmm8) : "%r8", "%r9", "%r10", "%r11", "%r12", "%r13", "%r14", "%r15", "%xmm8", "%xmm9", "%xmm10", "%xmm11", "%xmm12", "%xmm13", "%xmm14", "%xmm15" ); return 0; }