49667f2302
Process is an incorrect name for the DebuggedProcess struct that the thread is "a part" of. Also, no need to export that field.
71 lines
1.6 KiB
Go
71 lines
1.6 KiB
Go
package proctl
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import (
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"fmt"
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sys "golang.org/x/sys/unix"
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)
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// Not actually used, but necessary
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// to be defined.
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type OSSpecificDetails struct {
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registers sys.PtraceRegs
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}
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func (t *ThreadContext) Halt() error {
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if stopped(t.Id) {
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return nil
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}
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err := sys.Tgkill(t.dbp.Pid, t.Id, sys.SIGSTOP)
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if err != nil {
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return fmt.Errorf("Halt err %s %d", err, t.Id)
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}
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_, _, err = wait(t.Id, 0)
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if err != nil {
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return fmt.Errorf("wait err %s %d", err, t.Id)
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}
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return nil
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}
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func (t *ThreadContext) resume() error {
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return PtraceCont(t.Id, 0)
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}
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func (t *ThreadContext) singleStep() error {
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err := sys.PtraceSingleStep(t.Id)
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if err != nil {
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return err
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}
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_, _, err = wait(t.Id, 0)
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return err
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}
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func (t *ThreadContext) blocked() bool {
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// TODO(dp) cache the func pc to remove this lookup
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pc, _ := t.PC()
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fn := t.dbp.goSymTable.PCToFunc(pc)
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if fn != nil && ((fn.Name == "runtime.futex") || (fn.Name == "runtime.usleep") || (fn.Name == "runtime.clone")) {
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return true
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}
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return false
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}
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func (thread *ThreadContext) saveRegisters() (Registers, error) {
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if err := sys.PtraceGetRegs(thread.Id, &thread.os.registers); err != nil {
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return nil, fmt.Errorf("could not save register contents")
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}
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return &Regs{&thread.os.registers}, nil
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}
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func (thread *ThreadContext) restoreRegisters() error {
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return sys.PtraceSetRegs(thread.Id, &thread.os.registers)
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}
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func writeMemory(thread *ThreadContext, addr uintptr, data []byte) (int, error) {
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return sys.PtracePokeData(thread.Id, addr, data)
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}
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func readMemory(thread *ThreadContext, addr uintptr, data []byte) (int, error) {
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return sys.PtracePeekData(thread.Id, addr, data)
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}
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