1 #include <cstdint>
2 
3 int main() {
4   constexpr uint64_t rax = 0x0102030405060708;
5   constexpr uint64_t rbx = 0x1112131415161718;
6   constexpr uint64_t rcx = 0x2122232425262728;
7   constexpr uint64_t rdx = 0x3132333435363738;
8   constexpr uint64_t rsp = 0x4142434445464748;
9   constexpr uint64_t rbp = 0x5152535455565758;
10   constexpr uint64_t rsi = 0x6162636465666768;
11   constexpr uint64_t rdi = 0x7172737475767778;
12 
13   asm volatile(
14     // save rsp & rbp
15     "movq    %%rsp, %%r8\n\t"
16     "movq    %%rbp, %%r9\n\t"
17     "\n\t"
18     "movq    %4, %%rsp\n\t"
19     "movq    %5, %%rbp\n\t"
20     "\n\t"
21     "int3\n\t"
22     "\n\t"
23     // restore rsp & rbp
24     "movq    %%r8, %%rsp\n\t"
25     "movq    %%r9, %%rbp"
26     :
27     : "a"(rax), "b"(rbx), "c"(rcx), "d"(rdx), "i"(rsp), "i"(rbp), "S"(rsi),
28       "D"(rdi)
29     : "%r8", "%r9"
30   );
31 
32   return 0;
33 }
34