int main() {
const char *message = "Hello, World!\n";
asm(
"mov $1, %%rax;"
"mov $1, %%rdi;"
"mov %[msg], %%rsi;"
"mov $13, %%rdx;"
"syscall;"
:
: [msg] "r"(message)
: "%rax", "%rdi", "%rsi", "%rdx"
);
return 0;
}