Generate g for ~ Go 1.17beta1 (go1.17beta1-2-g770f1de8c5)
Compared to Go1.16 there is one non-cosmetic change to g related to tracking
scheduling latencies:

https://github.com/golang/go/commit/bedfeed54a7a

Regenerated files stay without changes for Go1.16 and previous releases.

---- 8< ----
diff --git a/zruntime_g_go1.16.go b/zruntime_g_go1.17.go
index 9604d6b..7a76db6 100644
--- a/zruntime_g_go1.16.go
+++ b/zruntime_g_go1.17.go
@@ -1,6 +1,6 @@
 // Code generated by g_typedef; DO NOT EDIT.

-// +build go1.16,!go1.17
+// +build go1.17,!go1.18

 package xruntime

@@ -25,7 +25,18 @@ type g struct {
        syscallsp uintptr // if status==Gsyscall, syscallsp = sched.sp to use during gc
        syscallpc uintptr // if status==Gsyscall, syscallpc = sched.pc to use during gc
        stktopsp  uintptr // expected sp at top of stack, to check in traceback
-       param        unsafe.Pointer // passed parameter on wakeup
+       // param is a generic pointer parameter field used to pass
+       // values in particular contexts where other storage for the
+       // parameter would be difficult to find. It is currently used
+       // in three ways:
+       // 1. When a channel operation wakes up a blocked goroutine, it sets param to
+       //    point to the sudog of the completed blocking operation.
+       // 2. By gcAssistAlloc1 to signal back to its caller that the goroutine completed
+       //    the GC cycle. It is unsafe to do so in any other way, because the goroutine's
+       //    stack may have moved in the meantime.
+       // 3. By debugCallWrap to pass parameters to a new goroutine because allocating a
+       //    closure in the runtime is forbidden.
+       param        unsafe.Pointer
        atomicstatus uint32
        stackLock    uint32 // sigprof/scang lock; TODO: fold in to atomicstatus
        goid         int64
@@ -57,6 +68,10 @@ type g struct {

        raceignore     int8     // ignore race detection events
        sysblocktraced bool     // StartTrace has emitted EvGoInSyscall about this goroutine
+       tracking       bool     // whether we're tracking this G for sched latency statistics
+       trackingSeq    uint8    // used to decide whether to track this G
+       runnableStamp  int64    // timestamp of when the G last became runnable, only used when tracking
+       runnableTime   int64    // the amount of time spent runnable, cleared when running, only used when tracking
        sysexitticks   int64    // cputicks when syscall has returned (for tracing)
        traceseq       uint64   // trace event sequencer
        tracelastp     puintptr // last P emitted an event for this goroutine
@@ -142,7 +157,7 @@ type gobuf struct {
        pc   uintptr
        g    guintptr
        ctxt unsafe.Pointer
-       ret  uintreg
+       ret  uintptr
        lr   uintptr
        bp   uintptr // for framepointer-enabled architectures
 }