// runindir

// Copyright 2022 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.

// Issue 11656: runtime: jump to bad PC missing good traceback

// windows doesn't work, because Windows exception handling
// delivers signals based on the current PC, and that current PC
// doesn't go into the Go runtime.

// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.

//go:build unix || windows

#include "libcgo.h"

// Releases the cgo traceback context.
void _cgo_release_context(uintptr_t ctxt) {
	void (*pfn)(struct context_arg*);

	pfn = _cgo_get_context_function();
	if (ctxt != 0 && pfn != nil) {
		struct context_arg arg;

		arg.Context = ctxt;

// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.

package runtime

func XTestSPWrite(t TestingT) {
	// Test that we can traceback from the stack check prologue of a function
	// that writes to SP. See #62326.

	// Start a goroutine to minimize the initial stack and ensure we grow the stack.
	done := make(chan bool)
	go func() {

	MOVD	LR, R10

	// We're coming from C code, initialize R0
	MOVD	$0, R0

	// If no traceback function, do usual sigtramp.
	MOVD	runtime·cgoTraceback(SB), R6
	CMP	$0, R6
	BEQ	sigtramp

	// If no traceback support function, which means that
	// runtime/cgo was not linked in, do usual sigtramp.
	MOVD	_cgo_callers(SB), R6
	CMP	$0, R6
	BEQ	sigtramp

// Used instead of sigtramp in programs that use cgo.
// Arguments from kernel are in DI, SI, DX.
TEXT runtime·cgoSigtramp(SB),NOSPLIT,$0
	// If no traceback function, do usual sigtramp.
	MOVQ	runtime·cgoTraceback(SB), AX
	TESTQ	AX, AX
	JZ	sigtramp

	// If no traceback support function, which means that
	// runtime/cgo was not linked in, do usual sigtramp.
	MOVQ	_cgo_callers(SB), AX
	TESTQ	AX, AX
	JZ	sigtramp

	MOVD	LR, R10
	// Save R27, g because they will be clobbered,
	// we need to restore them before jump to sigtramp.
	MOVD	R27, R11
	MOVD	g, R12

	// If no traceback function, do usual sigtramp.
	MOVD	runtime·cgoTraceback(SB), R6
	CBZ	R6, sigtramp

	// If no traceback support function, which means that
	// runtime/cgo was not linked in, do usual sigtramp.
	MOVD	_cgo_callers(SB), R7
	CBZ	R7, sigtramp

	// GoOnly includes only Go symbols that runtime will symbolize.
	// Go+C includes C symbols that runtime will not symbolize.
	for _, traceback := range []string{"GoOnly", "Go+C"} {
		t.Run("traceback"+traceback, func(t *testing.T) {
			cmd := exec.Command(testenv.GoToolPath(t), "run", prog)
			if traceback != "GoOnly" {
				cmd.Env = append(os.Environ(), "SETCGOTRACEBACK=1")
			}
			cmd.Stderr = new(bytes.Buffer)

// Used instead of sigtramp in programs that use cgo.
// Arguments from kernel are in DI, SI, DX.
TEXT runtime·cgoSigtramp(SB),NOSPLIT,$0
	// If no traceback function, do usual sigtramp.
	MOVQ	runtime·cgoTraceback(SB), AX
	TESTQ	AX, AX
	JZ	sigtramp

	// If no traceback support function, which means that
	// runtime/cgo was not linked in, do usual sigtramp.
	MOVQ	_cgo_callers(SB), AX
	TESTQ	AX, AX
	JZ	sigtramp

type locInfo struct {
	// location id assigned by the profileBuilder
	id uint64

	// sequence of PCs, including the fake PCs returned by the traceback
	// to represent inlined functions
	// https://github.com/golang/go/blob/d6f2f833c93a41ec1c68e49804b8387a06b131c5/src/runtime/traceback.go#L347-L368
	pcs []uintptr

	// firstPCFrames and firstPCSymbolizeResult hold the results of the

// license that can be found in the LICENSE file.

package main

// This program failed when run under the C/C++ ThreadSanitizer.
// There was no TSAN synchronization for the call to the cgo
// traceback routine.

/*
#cgo CFLAGS: -g -fsanitize=thread
#cgo LDFLAGS: -g -fsanitize=thread

#include <pthread.h>
#include <stdint.h>
#include <stdlib.h>
#include <sys/time.h>
#include <unistd.h>