dstStackSize uintptr // Go stack space used
	dstSpill     uintptr // Extra stack space for argument spill slots
	dstRegisters int     // Go ABI int argument registers used

	// retOffset is the offset of the uintptr-sized result in the Go
	// frame.
	retOffset uintptr
}

func (p *abiDesc) assignArg(t *_type) {
	if t.Size_ > goarch.PtrSize {
		// We don't support this right now. In
		// stdcall/cdecl, 64-bit ints and doubles are

	runtime.KeepAlive(b)
	return int(nwritten), errnoErr(errno)
}

func Seek(fd int, offset int64, whence int) (int64, error) {
	var newoffset filesize
	errno := fd_seek(int32(fd), filedelta(offset), uint32(whence), unsafe.Pointer(&newoffset))
	return int64(newoffset), errnoErr(errno)
}

func Dup(fd int) (int, error) {
	return 0, ENOSYS
}

func Dup2(fd, newfd int) error {
	return ENOSYS
}

            super(location)
            offset = location['offset'] as int
            length = location['length'] as int
        }

        @Override
        int getOffset() {
            offset
        }

        @Override
        int getLength() {
            length
        }
    }

    static class ReceivedPluginIdLocation implements PluginIdLocation {

                OffsetInFileLocation fileLocation = (OffsetInFileLocation) location;
                return new org.gradle.internal.build.event.types.DefaultOffsetInFileLocation(fileLocation.getPath(), fileLocation.getOffset(), fileLocation.getLength());
            } else if (location instanceof FileLocation) { // generic class must be after the subclasses in the if-elseif chain.
                FileLocation fileLocation = (FileLocation) location;

//sys	Readlink(path string, buf []byte) (n int, err error)
//sys	Rename(from string, to string) (err error)
//sys	Revoke(path string) (err error)
//sys	Rmdir(path string) (err error)
//sys	Seek(fd int, offset int64, whence int) (newoffset int64, err error) = SYS_lseek
//sys	Select(n int, r *FdSet, w *FdSet, e *FdSet, timeout *Timeval) (err error)
//sys	Setegid(egid int) (err error)
//sysnb	Seteuid(euid int) (err error)
//sysnb	Setgid(gid int) (err error)

	if valueRegs != nil {
		*valueRegs = methodRegs
	}
	if retSize := methodFrameType.Size() - methodABI.retOffset; retSize > 0 {
		valueRet := add(valueFrame, valueABI.retOffset, "valueFrame's size > retOffset")
		methodRet := add(methodFrame, methodABI.retOffset, "methodFrame's size > retOffset")
		// This copies to the stack. Write barriers are not needed.
		memmove(valueRet, methodRet, retSize)
	}

			}
			if !bytes.Equal(stack, lt.stack) {
				t.Errorf("funcLayout(%v, %v).stack=%v, want %v", lt.typ, lt.rcvr, stack, lt.stack)
			}
			if !bytes.Equal(gc, lt.gc) {
				t.Errorf("funcLayout(%v, %v).gc=%v, want %v", lt.typ, lt.rcvr, gc, lt.gc)
			}
			if !bytes.Equal(inRegs, lt.inRegs) {
				t.Errorf("funcLayout(%v, %v).inRegs=%v, want %v", lt.typ, lt.rcvr, inRegs, lt.inRegs)

                out.name("subtype").value("offsetInFile");
                OffsetInFileLocation l = (OffsetInFileLocation) value;
                out.name("offset").value(l.getOffset());
                out.name("length").value(l.getLength());
            } else {
                out.name("subtype").value("file");
            }
            out.endObject();
        }

        @Override

                    h.send(seekReq, seekResp);
                    if ( log.isDebugEnabled() && seekResp.getOffset() != fileSize ) {
                        log.debug(String.format("Open returned wrong size %d != %d", fileSize, seekResp.getOffset()));
                    }
                    fileSize = seekResp.getOffset();
                }
                catch ( Exception e ) {
                    log.debug("Seek failed", e);

//sys	Rename(from string, to string) (err error)
//sys	Renameat(olddirfd int, oldpath string, newdirfd int, newpath string) (err error)
//sys	Rmdir(path string) (err error)
//sys	Seek(fd int, offset int64, whence int) (newoffset int64, err error) = lseek
//sysnb	Setegid(egid int) (err error)
//sysnb	Seteuid(euid int) (err error)
//sysnb	Setgid(gid int) (err error)
//sysnb	Setuid(uid int) (err error)