ref: e54af86927ced66fb7fa8ad744cfb609390f04d8
dir: /lib/thread/start+osx-x64.s/
# The entry point for thread start, registered with bsdthread_register # %rdi: pthread (0, for us) # %rsi: mach thread port (ignored) # %rdx: func # %rcx: env # %r8: stack # %r9: flags (= 0) # %rsp: stack - C_64_REDZONE_LEN (= stack - 128) .globl _thread$start _thread$start: /* call the function */ movq %r8, %rsp /* set up stack */ movq %rcx,%rdi callq *%rdx /* call function */ /* 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 $0x2000049,%rax /* munmap */ movq -8(%rdi),%rsi /* size */ subq %rsi,%rdi /* move to base ptr */ syscall /* exit the thread */ movq $0x2000169, %rax /* Sysbsdthread_terminate */ movq $0, %rdi /* stack */ movq $0, %rsi /* len */ movq $0, %rdx /* sem */ syscall