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
main()10 int main() {
11 constexpr xmm_t xmm_fill = {
12 .as_uint64 = { 0, 0 }
13 };
14
15 uint64_t r64[8];
16 xmm_t xmm[8];
17
18 asm volatile(
19 "movq %2, %%r8\n\t"
20 "movq %2, %%r9\n\t"
21 "movq %2, %%r10\n\t"
22 "movq %2, %%r11\n\t"
23 "movq %2, %%r12\n\t"
24 "movq %2, %%r13\n\t"
25 "movq %2, %%r14\n\t"
26 "movq %2, %%r15\n\t"
27 "\n\t"
28 "movaps %2, %%xmm8\n\t"
29 "movaps %2, %%xmm9\n\t"
30 "movaps %2, %%xmm10\n\t"
31 "movaps %2, %%xmm11\n\t"
32 "movaps %2, %%xmm12\n\t"
33 "movaps %2, %%xmm13\n\t"
34 "movaps %2, %%xmm14\n\t"
35 "movaps %2, %%xmm15\n\t"
36 "\n\t"
37 "int3\n\t"
38 "\n\t"
39 "movq %%r8, 0x00(%0)\n\t"
40 "movq %%r9, 0x08(%0)\n\t"
41 "movq %%r10, 0x10(%0)\n\t"
42 "movq %%r11, 0x18(%0)\n\t"
43 "movq %%r12, 0x20(%0)\n\t"
44 "movq %%r13, 0x28(%0)\n\t"
45 "movq %%r14, 0x30(%0)\n\t"
46 "movq %%r15, 0x38(%0)\n\t"
47 "\n\t"
48 "movaps %%xmm8, 0x00(%1)\n\t"
49 "movaps %%xmm9, 0x10(%1)\n\t"
50 "movaps %%xmm10, 0x20(%1)\n\t"
51 "movaps %%xmm11, 0x30(%1)\n\t"
52 "movaps %%xmm12, 0x40(%1)\n\t"
53 "movaps %%xmm13, 0x50(%1)\n\t"
54 "movaps %%xmm14, 0x60(%1)\n\t"
55 "movaps %%xmm15, 0x70(%1)\n\t"
56 :
57 : "a"(r64), "b"(xmm), "m"(xmm_fill)
58 : "%r8", "%r9", "%r10", "%r11", "%r12", "%r13", "%r14", "%r15", "%xmm8",
59 "%xmm9", "%xmm10", "%xmm11", "%xmm12", "%xmm13", "%xmm14", "%xmm15"
60 );
61
62 for (int i = 0; i < 8; ++i)
63 printf("r%d = 0x%016" PRIx64 "\n", i+8, r64[i]);
64 for (int i = 0; i < 8; ++i) {
65 printf("xmm%d = { ", i+8);
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 }
73