diff options
Diffstat (limited to 'src/runtime/sys_darwin.go')
| -rw-r--r-- | src/runtime/sys_darwin.go | 70 |
1 files changed, 21 insertions, 49 deletions
diff --git a/src/runtime/sys_darwin.go b/src/runtime/sys_darwin.go index e4f19bbf41..4a3f2fc453 100644 --- a/src/runtime/sys_darwin.go +++ b/src/runtime/sys_darwin.go @@ -6,50 +6,6 @@ package runtime import "unsafe" -// Call fn with arg as its argument. Return what fn returns. -// fn is the raw pc value of the entry point of the desired function. -// Switches to the system stack, if not already there. -// Preserves the calling point as the location where a profiler traceback will begin. -//go:nosplit -func libcCall(fn, arg unsafe.Pointer) int32 { - // Leave caller's PC/SP/G around for traceback. - gp := getg() - var mp *m - if gp != nil { - mp = gp.m - } - if mp != nil && mp.libcallsp == 0 { - mp.libcallg.set(gp) - mp.libcallpc = getcallerpc() - // sp must be the last, because once async cpu profiler finds - // all three values to be non-zero, it will use them - mp.libcallsp = getcallersp() - } else { - // Make sure we don't reset libcallsp. This makes - // libcCall reentrant; We remember the g/pc/sp for the - // first call on an M, until that libcCall instance - // returns. Reentrance only matters for signals, as - // libc never calls back into Go. The tricky case is - // where we call libcX from an M and record g/pc/sp. - // Before that call returns, a signal arrives on the - // same M and the signal handling code calls another - // libc function. We don't want that second libcCall - // from within the handler to be recorded, and we - // don't want that call's completion to zero - // libcallsp. - // We don't need to set libcall* while we're in a sighandler - // (even if we're not currently in libc) because we block all - // signals while we're handling a signal. That includes the - // profile signal, which is the one that uses the libcall* info. - mp = nil - } - res := asmcgocall(fn, arg) - if mp != nil { - mp.libcallsp = 0 - } - return res -} - // The X versions of syscall expect the libc call to return a 64-bit result. // Otherwise (the non-X version) expects a 32-bit result. // This distinction is required because an error is indicated by returning -1, @@ -228,6 +184,13 @@ func madvise_trampoline() //go:nosplit //go:cgo_unsafe_args +func mlock(addr unsafe.Pointer, n uintptr) { + libcCall(unsafe.Pointer(funcPC(mlock_trampoline)), unsafe.Pointer(&addr)) +} +func mlock_trampoline() + +//go:nosplit +//go:cgo_unsafe_args func read(fd int32, p unsafe.Pointer, n int32) int32 { return libcCall(unsafe.Pointer(funcPC(read_trampoline)), unsafe.Pointer(&fd)) } @@ -303,9 +266,9 @@ func nanotime_trampoline() //go:nosplit //go:cgo_unsafe_args func walltime1() (int64, int32) { - var t timeval + var t timespec libcCall(unsafe.Pointer(funcPC(walltime_trampoline)), unsafe.Pointer(&t)) - return int64(t.tv_sec), 1000 * t.tv_usec + return t.tv_sec, int32(t.tv_nsec) } func walltime_trampoline() @@ -353,13 +316,20 @@ func setitimer_trampoline() //go:nosplit //go:cgo_unsafe_args -func sysctl(mib *uint32, miblen uint32, out *byte, size *uintptr, dst *byte, ndst uintptr) int32 { +func sysctl(mib *uint32, miblen uint32, oldp *byte, oldlenp *uintptr, newp *byte, newlen uintptr) int32 { return libcCall(unsafe.Pointer(funcPC(sysctl_trampoline)), unsafe.Pointer(&mib)) } func sysctl_trampoline() //go:nosplit //go:cgo_unsafe_args +func sysctlbyname(name *byte, oldp *byte, oldlenp *uintptr, newp *byte, newlen uintptr) int32 { + return libcCall(unsafe.Pointer(funcPC(sysctlbyname_trampoline)), unsafe.Pointer(&name)) +} +func sysctlbyname_trampoline() + +//go:nosplit +//go:cgo_unsafe_args func fcntl(fd, cmd, arg int32) int32 { return libcCall(unsafe.Pointer(funcPC(fcntl_trampoline)), unsafe.Pointer(&fd)) } @@ -453,7 +423,7 @@ func setNonblock(fd int32) { //go:cgo_import_dynamic libc_pthread_create pthread_create "/usr/lib/libSystem.B.dylib" //go:cgo_import_dynamic libc_pthread_self pthread_self "/usr/lib/libSystem.B.dylib" //go:cgo_import_dynamic libc_pthread_kill pthread_kill "/usr/lib/libSystem.B.dylib" -//go:cgo_import_dynamic libc_exit exit "/usr/lib/libSystem.B.dylib" +//go:cgo_import_dynamic libc_exit _exit "/usr/lib/libSystem.B.dylib" //go:cgo_import_dynamic libc_raise raise "/usr/lib/libSystem.B.dylib" //go:cgo_import_dynamic libc_open open "/usr/lib/libSystem.B.dylib" @@ -465,12 +435,13 @@ func setNonblock(fd int32) { //go:cgo_import_dynamic libc_mmap mmap "/usr/lib/libSystem.B.dylib" //go:cgo_import_dynamic libc_munmap munmap "/usr/lib/libSystem.B.dylib" //go:cgo_import_dynamic libc_madvise madvise "/usr/lib/libSystem.B.dylib" +//go:cgo_import_dynamic libc_mlock mlock "/usr/lib/libSystem.B.dylib" //go:cgo_import_dynamic libc_error __error "/usr/lib/libSystem.B.dylib" //go:cgo_import_dynamic libc_usleep usleep "/usr/lib/libSystem.B.dylib" //go:cgo_import_dynamic libc_mach_timebase_info mach_timebase_info "/usr/lib/libSystem.B.dylib" //go:cgo_import_dynamic libc_mach_absolute_time mach_absolute_time "/usr/lib/libSystem.B.dylib" -//go:cgo_import_dynamic libc_gettimeofday gettimeofday "/usr/lib/libSystem.B.dylib" +//go:cgo_import_dynamic libc_clock_gettime clock_gettime "/usr/lib/libSystem.B.dylib" //go:cgo_import_dynamic libc_sigaction sigaction "/usr/lib/libSystem.B.dylib" //go:cgo_import_dynamic libc_pthread_sigmask pthread_sigmask "/usr/lib/libSystem.B.dylib" //go:cgo_import_dynamic libc_sigaltstack sigaltstack "/usr/lib/libSystem.B.dylib" @@ -478,6 +449,7 @@ func setNonblock(fd int32) { //go:cgo_import_dynamic libc_kill kill "/usr/lib/libSystem.B.dylib" //go:cgo_import_dynamic libc_setitimer setitimer "/usr/lib/libSystem.B.dylib" //go:cgo_import_dynamic libc_sysctl sysctl "/usr/lib/libSystem.B.dylib" +//go:cgo_import_dynamic libc_sysctlbyname sysctlbyname "/usr/lib/libSystem.B.dylib" //go:cgo_import_dynamic libc_fcntl fcntl "/usr/lib/libSystem.B.dylib" //go:cgo_import_dynamic libc_kqueue kqueue "/usr/lib/libSystem.B.dylib" //go:cgo_import_dynamic libc_kevent kevent "/usr/lib/libSystem.B.dylib" |