| 1 | #include <cinttypes> |
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| 2 | #include <cstdint> |
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| 3 | #include <cstdio> |
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| 4 | |
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| 5 | union alignas(16) xmm_t { |
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| 6 | uint64_t as_uint64[2]; |
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| 7 | uint8_t as_uint8[16]; |
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| 8 | }; |
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| 9 | |
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| 10 | int main() { |
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| 11 | constexpr xmm_t xmm_fill = { |
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| 12 | .as_uint64 = { 0, 0 } |
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| 13 | }; |
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| 14 | |
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| 15 | uint64_t r64[8]; |
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| 16 | xmm_t xmm[8]; |
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| 17 | |
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| 18 | asm volatile( |
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| 19 | "movq %2, %%r8\n\t" |
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| 20 | "movq %2, %%r9\n\t" |
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| 21 | "movq %2, %%r10\n\t" |
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| 22 | "movq %2, %%r11\n\t" |
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| 23 | "movq %2, %%r12\n\t" |
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| 24 | "movq %2, %%r13\n\t" |
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| 25 | "movq %2, %%r14\n\t" |
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| 26 | "movq %2, %%r15\n\t" |
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| 27 | "\n\t" |
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| 28 | "movaps %2, %%xmm8\n\t" |
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| 29 | "movaps %2, %%xmm9\n\t" |
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| 30 | "movaps %2, %%xmm10\n\t" |
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| 31 | "movaps %2, %%xmm11\n\t" |
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| 32 | "movaps %2, %%xmm12\n\t" |
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| 33 | "movaps %2, %%xmm13\n\t" |
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| 34 | "movaps %2, %%xmm14\n\t" |
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| 35 | "movaps %2, %%xmm15\n\t" |
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| 36 | "\n\t" |
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| 37 | "int3\n\t" |
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| 38 | "\n\t" |
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| 39 | "movq %%r8, 0x00(%0)\n\t" |
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| 40 | "movq %%r9, 0x08(%0)\n\t" |
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| 41 | "movq %%r10, 0x10(%0)\n\t" |
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| 42 | "movq %%r11, 0x18(%0)\n\t" |
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| 43 | "movq %%r12, 0x20(%0)\n\t" |
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| 44 | "movq %%r13, 0x28(%0)\n\t" |
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| 45 | "movq %%r14, 0x30(%0)\n\t" |
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| 46 | "movq %%r15, 0x38(%0)\n\t" |
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| 47 | "\n\t" |
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| 48 | "movaps %%xmm8, 0x00(%1)\n\t" |
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| 49 | "movaps %%xmm9, 0x10(%1)\n\t" |
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| 50 | "movaps %%xmm10, 0x20(%1)\n\t" |
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| 51 | "movaps %%xmm11, 0x30(%1)\n\t" |
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| 52 | "movaps %%xmm12, 0x40(%1)\n\t" |
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| 53 | "movaps %%xmm13, 0x50(%1)\n\t" |
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| 54 | "movaps %%xmm14, 0x60(%1)\n\t" |
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| 55 | "movaps %%xmm15, 0x70(%1)\n\t" |
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| 56 | : |
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| 57 | : "a" (r64), "b" (xmm), "m" (xmm_fill) |
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| 58 | : "%r8" , "%r9" , "%r10" , "%r11" , "%r12" , "%r13" , "%r14" , "%r15" , "%xmm8" , |
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| 59 | "%xmm9" , "%xmm10" , "%xmm11" , "%xmm12" , "%xmm13" , "%xmm14" , "%xmm15" |
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| 60 | ); |
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| 61 | |
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| 62 | for (int i = 0; i < 8; ++i) |
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| 63 | printf(format: "r%d = 0x%016" PRIx64 "\n" , i+8, r64[i]); |
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| 64 | for (int i = 0; i < 8; ++i) { |
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| 65 | printf(format: "xmm%d = { " , i+8); |
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| 66 | for (int j = 0; j < sizeof(xmm->as_uint8); ++j) |
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| 67 | printf(format: "0x%02x " , xmm[i].as_uint8[j]); |
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| 68 | printf(format: "}\n" ); |
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| 69 | } |
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| 70 | |
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| 71 | return 0; |
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| 72 | } |
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| 73 | |
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