ref: c5feb1c4f2a7b26239d074c1983b953df29ebff7
dir: /libstd/syscall-linux.s/
.globl std$syscall std$syscall: pushq %rbp /* hack: We load 6 args regardless of how many we actually have. This may load junk values, but if the syscall doesn't use them, it's going to be harmless. */ movq 16(%rsp),%rax movq 24(%rsp),%rdi movq 32(%rsp),%rsi movq 40(%rsp),%rdx movq 48(%rsp),%r10 movq 56(%rsp),%r8 movq 64(%rsp),%r9 syscall popq %rbp ret