80 lines
2.2 KiB
Go
80 lines
2.2 KiB
Go
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package native
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// #cgo LDFLAGS: -lutil
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//#include <sys/types.h>
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//#include <sys/ptrace.h>
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//
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// #include <stdlib.h>
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// #include "ptrace_freebsd_amd64.h"
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import "C"
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import (
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"syscall"
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"unsafe"
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sys "golang.org/x/sys/unix"
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"github.com/go-delve/delve/pkg/proc/fbsdutil"
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)
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// PtraceAttach executes the sys.PtraceAttach call.
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// pid must be a PID, not a LWPID
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func PtraceAttach(pid int) error {
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return sys.PtraceAttach(pid)
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}
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// PtraceDetach calls ptrace(PTRACE_DETACH).
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func PtraceDetach(pid int) error {
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return sys.PtraceDetach(pid)
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}
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// PtraceCont executes ptrace PTRACE_CONT
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// id may be a PID or an LWPID
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func PtraceCont(id, sig int) error {
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return sys.PtraceCont(id, sig)
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}
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// PtraceSingleStep executes ptrace PTRACE_SINGLE_STEP.
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// id may be a PID or an LWPID
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func PtraceSingleStep(id int) error {
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return sys.PtraceSingleStep(id)
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}
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// Get a list of the thread ids of a process
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func PtraceGetLwpList(pid int) (tids []int32) {
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num_lwps, _ := C.ptrace_get_num_lwps(C.int(pid))
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tids = make([]int32, num_lwps)
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n, _ := C.ptrace_get_lwp_list(C.int(pid), (*C.int)(unsafe.Pointer(&tids[0])), C.size_t(num_lwps))
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return tids[0:n]
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}
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// Get info of the thread that caused wpid's process to stop.
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func ptraceGetLwpInfo(wpid int) (info sys.PtraceLwpInfoStruct, err error) {
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err = sys.PtraceLwpInfo(wpid, uintptr(unsafe.Pointer(&info)))
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return info, err
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}
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func PtraceGetRegset(id int) (regset fbsdutil.AMD64Xstate, err error) {
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_, _, err = syscall.Syscall6(syscall.SYS_PTRACE, sys.PTRACE_GETFPREGS, uintptr(id), uintptr(unsafe.Pointer(®set.AMD64PtraceFpRegs)), 0, 0, 0)
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if err == syscall.Errno(0) || err == syscall.ENODEV {
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var xsave_len C.size_t
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xsave, _ := C.ptrace_get_xsave(C.int(id), &xsave_len)
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defer C.free(unsafe.Pointer(xsave))
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if xsave != nil {
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xsave_sl := C.GoBytes(unsafe.Pointer(xsave), C.int(xsave_len))
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err = fbsdutil.AMD64XstateRead(xsave_sl, false, ®set)
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}
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}
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return
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}
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// id may be a PID or an LWPID
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func ptraceReadData(id int, addr uintptr, data []byte) (n int, err error) {
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return sys.PtraceIO(sys.PIOD_READ_D, id, addr, data, len(data))
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}
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// id may be a PID or an LWPID
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func ptraceWriteData(id int, addr uintptr, data []byte) (n int, err error) {
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return sys.PtraceIO(sys.PIOD_WRITE_D, id, addr, data, len(data))
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}
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