Add gops agent

vendor/github.com/google/gops/internal/obj/textflag.go

@@ -0,0 +1,50 @@
+// Copyright 2013 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// This file defines flags attached to various functions
+// and data objects. The compilers, assemblers, and linker must
+// all agree on these values.
+
+package obj
+
+const (
+	// Don't profile the marked routine.
+	//
+	// Deprecated: Not implemented, do not use.
+	NOPROF = 1
+
+	// It is ok for the linker to get multiple of these symbols. It will
+	// pick one of the duplicates to use.
+	DUPOK = 2
+
+	// Don't insert stack check preamble.
+	NOSPLIT = 4
+
+	// Put this data in a read-only section.
+	RODATA = 8
+
+	// This data contains no pointers.
+	NOPTR = 16
+
+	// This is a wrapper function and should not count as disabling 'recover'.
+	WRAPPER = 32
+
+	// This function uses its incoming context register.
+	NEEDCTXT = 64
+
+	// When passed to ggloblsym, causes Local to be set to true on the LSym it creates.
+	LOCAL = 128
+
+	// Allocate a word of thread local storage and store the offset from the
+	// thread local base to the thread local storage in this variable.
+	TLSBSS = 256
+
+	// Do not insert instructions to allocate a stack frame for this function.
+	// Only valid on functions that declare a frame size of 0.
+	// TODO(mwhudson): only implemented for ppc64x at present.
+	NOFRAME = 512
+
+	// Function can call reflect.Type.Method or reflect.Type.MethodByName.
+	REFLECTMETHOD = 1024
+)