// Copyright 2014 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.

package runtime

import (
	"internal/abi"
	"internal/goarch"
	"unsafe"
)

// cbs stores all registered Go callbacks.
var cbs struct {
	lock  mutex // use cbsLock / cbsUnlock for race instrumentation.
	ctxt  [cb_max]winCallback
	index map[winCallbackKey]int
	n     int
}

/* Copyright 2019 The TensorFlow Authors. All Rights Reserved.

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,

  std::unordered_set<int> output_nodes;
  output_nodes.reserve(outputs_.size());
  for (size_t i = 0; i < outputs_.size(); ++i) {
    output_nodes.insert(outputs_[i].node()->id());
  }

  std::unordered_set<int> stop_backprop_nodes =
      GetStopBackpropNodes(reachable_nodes, output_nodes);

  // Populate `input_nodes_` from Outputs in `inputs_`.
  input_nodes_.reserve(inputs_.size());

	// fallback hints.
	for i := 0; i < 5; i++ {
		// Reserve memory at the next hint so it can't be used
		// for the heap.
		start, end, ok := MapNextArenaHint()
		if !ok {
			t.Skipf("failed to reserve memory at next arena hint [%#x, %#x)", start, end)
		}
		t.Logf("reserved [%#x, %#x)", start, end)
		disallowed = append(disallowed, [2]uintptr{start, end})

	REG_RESERVED // end of allocated registers

	REGARG  = -1      // -1 disables passing the first argument in register
	REGRT1  = REG_R3  // used during zeroing of the stack - not reserved
	REGRT2  = REG_R4  // used during zeroing of the stack - not reserved
	REGTMP  = REG_R10 // scratch register used in the assembler and linker
	REGTMP2 = REG_R11 // scratch register used in the assembler and linker
	REGCTXT = REG_R12 // context for closures

// Clobbers R19, R20.
TEXT	racecall<>(SB), NOSPLIT|NOFRAME, $0-0
	MOVD	g_m(g), R10
	// Switch to g0 stack.
	MOVD	RSP, R19	// callee-saved, preserved across the CALL
	MOVD	R30, R20	// callee-saved, preserved across the CALL
	MOVD	m_g0(R10), R11
	CMP	R11, g
	BEQ	call	// already on g0
	MOVD	(g_sched+gobuf_sp)(R11), R12
	MOVD	R12, RSP
call:

	// object and from any x-kubernetes-embedded-resource annotated objects. No other metadata properties are accessible.
	//
	// Unknown data preserved in custom resources via x-kubernetes-preserve-unknown-fields is not accessible in CEL
	// expressions. This includes:
	// - Unknown field values that are preserved by object schemas with x-kubernetes-preserve-unknown-fields.

/* Copyright 2018 The TensorFlow Authors. All Rights Reserved.

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,

		Memory allocated from the heap that is reserved for stack space,
		whether or not it is currently in-use. Currently, this
		represents all stack memory for goroutines. It also includes all
		OS thread stacks in non-cgo programs. Note that stacks may be
		allocated differently in the future, and this may change.

	/memory/classes/heap/unused:bytes
		Memory that is reserved for heap objects but is not currently

		Kind: KindUint64,
	},
	{
		Name:        "/memory/classes/heap/unused:bytes",
		Description: "Memory that is reserved for heap objects but is not currently used to hold heap objects.",
		Kind:        KindUint64,
	},
	{
		Name:        "/memory/classes/metadata/mcache/free:bytes",
		Description: "Memory that is reserved for runtime mcache structures, but not in-use.",
		Kind:        KindUint64,
	},
	{