e4fc5e32c2
Previously either the terminal client or the debugger service would either lock main goroutine to a thread or provide a locked goroutine to run _all_ DebuggedProcess functions in. This is unnecessary because only ptrace functions need to be run from the same thread that originated the PT_ATTACH request. Here we use a specific thread-locked goroutine to service any ptrace request. That goroutine is also responsible for the initial spawning / attaching of the process, since it must be responsible for the PT_ATTACH request.
38 lines
665 B
Go
38 lines
665 B
Go
package proc
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import sys "golang.org/x/sys/unix"
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type Regs struct {
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regs *sys.PtraceRegs
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}
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func (r *Regs) PC() uint64 {
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return r.regs.PC()
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}
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func (r *Regs) SP() uint64 {
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return r.regs.Rsp
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}
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func (r *Regs) CX() uint64 {
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return r.regs.Rcx
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}
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func (r *Regs) SetPC(thread *Thread, pc uint64) (err error) {
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r.regs.SetPC(pc)
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thread.dbp.execPtraceFunc(func() { err = sys.PtraceSetRegs(thread.Id, r.regs) })
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return
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}
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func registers(thread *Thread) (Registers, error) {
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var (
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regs sys.PtraceRegs
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err error
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)
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thread.dbp.execPtraceFunc(func() { err = sys.PtraceGetRegs(thread.Id, ®s) })
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if err != nil {
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return nil, err
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}
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return &Regs{®s}, nil
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}
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