support Go 1.19

Signed-off-by: Cholerae Hu <choleraehyq@gmail.com>

p_m_go1.19.go

@@ -0,0 +1,40 @@
+// Copyright 2022 Cholerae Hu.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
+// implied. See the License for the specific language governing
+// permissions and limitations under the License. See the AUTHORS file
+// for names of contributors.
+
+//go:build gc && go1.19 && !go1.20
+
+package goid
+
+type p struct {
+	id int32 // Here is pid
+}
+
+type m struct {
+	g0      uintptr // goroutine with scheduling stack
+	morebuf gobuf   // gobuf arg to morestack
+	divmod  uint32  // div/mod denominator for arm - known to liblink
+	_       uint32
+
+	// Fields not known to debuggers.
+	procid     uint64       // for debuggers, but offset not hard-coded
+	gsignal    uintptr      // signal-handling g
+	goSigStack gsignalStack // Go-allocated signal handling stack
+	sigmask    sigset       // storage for saved signal mask
+	tls        [6]uintptr   // thread-local storage (for x86 extern register)
+	mstartfn   func()
+	curg       uintptr // current running goroutine
+	caughtsig  uintptr // goroutine running during fatal signal
+	p          *p      // attached p for executing go code (nil if not executing go code)
+}