Got it compiling for abi tests, still panicked but getting there

Author: grantnelson-wf

compiler/natives/src/internal/abi/type.go

@@ -462,3 +462,12 @@ func CopyStruct(dst, src *js.Object, typ *Type) {
 		dst.Set(prop, src.Get(prop))
 	}
 }
+
+//gopherjs:purge Uses unsafeSliceFor
+func (t *Type) GcSlice(begin, end uintptr) []byte
+
+//gopherjs:purge Uses unsafe.String or stringHeader
+func unsafeStringFor(b *byte, l int) string
+
+//gopherjs:purge Uses unsafe.Slice or sliceHeader
+func unsafeSliceFor(b *byte, l int) []byte

compiler/natives/src/internal/abi/utils.go

@@ -9,7 +9,10 @@ import (
 )
 
 // GOPHERJS: These utils are being added because they are common between
-// reflect and reflectlite.
+// reflect and reflectlite. The [Go proverb](https://go-proverbs.github.io/),
+// "A little copying is better than a little dependency," isn't applicable
+// when both reflect and reflectlite already depend on ABI. We can reduce
+// our native overrides in both locations by putting common code here.
 
 //gopherjs:new
 type errorString struct {

compiler/natives/src/reflect/type.go

@@ -229,3 +229,15 @@ func StructOf(fields []StructField) Type {
 	}
 	return toRType(abi.ReflectType(typ))
 }
+
+//gopherjs:purge Used in original MapOf and not used in override MapOf by GopherJS
+func bucketOf(ktyp, etyp *abi.Type) *abi.Type
+
+//gopherjs:purge Relates to GC programs not valid for GopherJS
+func (t *rtype) gcSlice(begin, end uintptr) []byte
+
+//gopherjs:purge Relates to GC programs not valid for GopherJS
+func emitGCMask(out []byte, base uintptr, typ *abi.Type, n uintptr)
+
+//gopherjs:purge Relates to GC programs not valid for GopherJS
+func appendGCProg(dst []byte, typ *abi.Type) []byte

compiler/natives/src/sync/sync.go

@@ -87,3 +87,13 @@ func runtime_nanotime() int64
 func throw(s string) {
 	js.Global.Call("$throwRuntimeError", s)
 }
+
+// GOPHERJS: This is identical to the original but without the go:linkname
+// that can not be handled right now, "can not insert local implementation..."
+// TODO(grantnelson-wf): Remove once linking works both directions.
+//
+//gopherjs:replace
+func syscall_hasWaitingReaders(rw *RWMutex) bool {
+	r := rw.readerCount.Load()
+	return r < 0 && r+rwmutexMaxReaders > 0
+}

compiler/natives/src/syscall/syscall_js_wasm.go

@@ -1,6 +1,7 @@
 package syscall
 
 import (
+	"sync"
 	"syscall/js"
 	_ "unsafe" // go:linkname
 )
@@ -52,6 +53,14 @@ func unsetenv_c(k string) {
 //go:linkname godebug_notify runtime.godebug_notify
 func godebug_notify(key, value string)
 
+// GOPHERJS: This was replaced so that we could add the go:linkname since
+// sync.syscall_hasWaitingReaders had a link we can't handle right now,
+// "can not insert local implementation..."
+// TODO(grantnelson-wf): Remove once linking works both directions.
+//
+//go:linkname hasWaitingReaders sync.syscall_hasWaitingReaders
+func hasWaitingReaders(rw *sync.RWMutex) bool
+
 func setStat(st *Stat_t, jsSt js.Value) {
 	// This method is an almost-exact copy of upstream, except for 4 places where
 	// time stamps are obtained as floats in lieu of int64. Upstream wasm emulates