ref: 1c61d05cba15d7e93d3207d4f3ab3c6043d63b77
dir: /lib/thread/exit+linux-x64.s/
/* const thread.exit : (stacksz : std.size -> void) NOTE: must be called from the bottom of the stack, since we assume that %rbp is in the top 4k of the stack. */ .globl thread$exit thread$exit: /* find top of stack */ movq %rbp,%rdi /* addr */ andq $~0xfff,%rdi /* align it */ addq $0x1000,%rdi /* munmap(base, size) */ movq $11,%rax /* munmap */ movq -8(%rdi),%rsi /* size */ subq %rsi,%rdi /* move to base ptr */ syscall /* thread_exit(0) */ movq $60,%rax /* exit */ xorq %rdi,%rdi /* 0 */ syscall