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syscall: support ptrace on macOS/ARM64

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Updates #38485.

Change-Id: I853966d934a8ee05cf62c7321f3e6271811d47b1
Reviewed-on: https://go-review.googlesource.com/c/go/+/260718
Trust: Cherry Zhang <cherryyz@google.com>
Run-TryBot: Cherry Zhang <cherryyz@google.com>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
This commit is contained in:
Cherry Zhang 2020-10-07 18:26:26 -04:00
parent 9e0837f2e9
commit 23e9e0c7f0
3 changed files with 22 additions and 10 deletions
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14
src/syscall/syscall_darwin_arm64.go
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@ -7,11 +7,11 @@ package syscall
import "unsafe"
func setTimespec(sec, nsec int64) Timespec {
return Timespec{Sec: int64(sec), Nsec: int64(nsec)}
return Timespec{Sec: sec, Nsec: nsec}
}
func setTimeval(sec, usec int64) Timeval {
return Timeval{Sec: int64(sec), Usec: int32(usec)}
return Timeval{Sec: sec, Usec: int32(usec)}
}
//sys Fstat(fd int, stat *Stat_t) (err error)
@ -20,14 +20,8 @@ func setTimeval(sec, usec int64) Timeval {
//sys Lstat(path string, stat *Stat_t) (err error)
//sys Stat(path string, stat *Stat_t) (err error)
//sys Statfs(path string, stat *Statfs_t) (err error)
//sys fstatat(fd int, path string, stat *Stat_t, flags int) (err error)
// Marked nosplit because it is called from forkAndExecInChild where
// stack growth is forbidden.
//go:nosplit
func ptrace(request int, pid int, addr uintptr, data uintptr) error {
return ENOTSUP
}
//sys fstatat(fd int, path string, stat *Stat_t, flags int) (err error)
//sys ptrace(request int, pid int, addr uintptr, data uintptr) (err error)
func SetKevent(k *Kevent_t, fd, mode, flags int) {
k.Ident = uint64(fd)

16
src/syscall/zsyscall_darwin_arm64.go
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@ -2087,3 +2087,19 @@ func libc_fstatat_trampoline()
//go:linkname libc_fstatat libc_fstatat
//go:cgo_import_dynamic libc_fstatat fstatat "/usr/lib/libSystem.B.dylib"
// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
//go:nosplit
func ptrace(request int, pid int, addr uintptr, data uintptr) (err error) {
_, _, e1 := syscall6(funcPC(libc_ptrace_trampoline), uintptr(request), uintptr(pid), uintptr(addr), uintptr(data), 0, 0)
if e1 != 0 {
err = errnoErr(e1)
}
return
}
func libc_ptrace_trampoline()
//go:linkname libc_ptrace libc_ptrace
//go:cgo_import_dynamic libc_ptrace ptrace "/usr/lib/libSystem.B.dylib"

2
src/syscall/zsyscall_darwin_arm64.s
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@ -249,3 +249,5 @@ TEXT ·libc_statfs_trampoline(SB),NOSPLIT,$0-0
JMP libc_statfs(SB)
TEXT ·libc_fstatat_trampoline(SB),NOSPLIT,$0-0
JMP libc_fstatat(SB)
TEXT ·libc_ptrace_trampoline(SB),NOSPLIT,$0-0
JMP libc_ptrace(SB)