mirror of
https://github.com/go-delve/delve.git
synced 2025-11-04 14:36:47 +08:00
101 lines
2.5 KiB
Go
101 lines
2.5 KiB
Go
package proctl
|
|
|
|
// #include "threads_darwin.h"
|
|
import "C"
|
|
import (
|
|
"fmt"
|
|
"unsafe"
|
|
)
|
|
|
|
type OSSpecificDetails struct {
|
|
thread_act C.thread_act_t
|
|
registers C.x86_thread_state64_t
|
|
}
|
|
|
|
func (t *ThreadContext) Halt() error {
|
|
var kret C.kern_return_t
|
|
kret = C.thread_suspend(t.os.thread_act)
|
|
if kret != C.KERN_SUCCESS {
|
|
return fmt.Errorf("could not suspend thread %d", t.Id)
|
|
}
|
|
return nil
|
|
}
|
|
|
|
func (t *ThreadContext) singleStep() error {
|
|
kret := C.single_step(t.os.thread_act)
|
|
if kret != C.KERN_SUCCESS {
|
|
return fmt.Errorf("could not single step")
|
|
}
|
|
t.Process.trapWait(0)
|
|
kret = C.clear_trap_flag(t.os.thread_act)
|
|
if kret != C.KERN_SUCCESS {
|
|
return fmt.Errorf("could not clear CPU trap flag")
|
|
}
|
|
return nil
|
|
}
|
|
|
|
func (t *ThreadContext) resume() error {
|
|
// TODO(dp) set flag for ptrace stops
|
|
if PtraceCont(t.Process.Pid, 0) == nil {
|
|
return nil
|
|
}
|
|
kret := C.resume_thread(t.os.thread_act)
|
|
if kret != C.KERN_SUCCESS {
|
|
return fmt.Errorf("could not continue thread")
|
|
}
|
|
return nil
|
|
}
|
|
|
|
func (t *ThreadContext) blocked() bool {
|
|
// TODO(dp) cache the func pc to remove this lookup
|
|
pc, _ := t.PC()
|
|
fn := t.Process.goSymTable.PCToFunc(pc)
|
|
if fn != nil && (fn.Name == "runtime.mach_semaphore_wait" || fn.Name == "runtime.usleep") {
|
|
return true
|
|
}
|
|
return false
|
|
}
|
|
|
|
func writeMemory(thread *ThreadContext, addr uintptr, data []byte) (int, error) {
|
|
var (
|
|
vm_data = unsafe.Pointer(&data[0])
|
|
vm_addr = C.mach_vm_address_t(addr)
|
|
length = C.mach_msg_type_number_t(len(data))
|
|
)
|
|
|
|
if ret := C.write_memory(thread.Process.os.task, vm_addr, vm_data, length); ret < 0 {
|
|
return 0, fmt.Errorf("could not write memory")
|
|
}
|
|
return len(data), nil
|
|
}
|
|
|
|
func readMemory(thread *ThreadContext, addr uintptr, data []byte) (int, error) {
|
|
var (
|
|
vm_data = unsafe.Pointer(&data[0])
|
|
vm_addr = C.mach_vm_address_t(addr)
|
|
length = C.mach_msg_type_number_t(len(data))
|
|
)
|
|
|
|
ret := C.read_memory(thread.Process.os.task, vm_addr, vm_data, length)
|
|
if ret < 0 {
|
|
return 0, fmt.Errorf("could not read memory")
|
|
}
|
|
return len(data), nil
|
|
}
|
|
|
|
func (thread *ThreadContext) saveRegisters() error {
|
|
kret := C.get_registers(C.mach_port_name_t(thread.os.thread_act), &thread.os.registers)
|
|
if kret != C.KERN_SUCCESS {
|
|
return fmt.Errorf("could not save register contents")
|
|
}
|
|
return nil
|
|
}
|
|
|
|
func (thread *ThreadContext) restoreRegisters() error {
|
|
kret := C.set_registers(C.mach_port_name_t(thread.os.thread_act), &thread.os.registers)
|
|
if kret != C.KERN_SUCCESS {
|
|
return fmt.Errorf("could not save register contents")
|
|
}
|
|
return nil
|
|
}
|