diff options
Diffstat (limited to 'lib/thread/start+osx-x64.s')
| -rw-r--r-- | lib/thread/start+osx-x64.s | 41 |
1 files changed, 30 insertions, 11 deletions
diff --git a/lib/thread/start+osx-x64.s b/lib/thread/start+osx-x64.s index bc62d08..bb497bb 100644 --- a/lib/thread/start+osx-x64.s +++ b/lib/thread/start+osx-x64.s @@ -1,22 +1,41 @@ -// 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) +# 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, %rax /* set up env */ + 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 %rsp, %rdi /* stack */ + movq $0, %rdi /* stack */ movq $0, %rsi /* len */ movq $0, %rdx /* sem */ syscall + |