// Copyright 2012 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.

#ifdef __ELF__
__attribute__((weak))
__attribute__((visibility("hidden")))
void _compilerrt_abort_impl(const char *file, int line, const char *func) {
}

/*
#include <stdlib.h>

extern void Go1(int*);
extern void Go2(char*);

// Use weak as a hack to permit defining a function even though we use export.
void C1() __attribute__ ((weak));
void C2() __attribute__ ((weak));

void C1() {
	int i;
	Go1(&i);
	if (i != 42) {
		abort();
	}
}

void C2() {
	char a[2];
	a[1] = 42;
	Go2(a);
	if (a[0] != 42) {
		abort();
	}
}

// msan is concerned. It just waits for a signal.
// Because the registers are msan-undefined, the signal handler will
// be invoked with all registers msan-undefined.
__attribute__((noinline))
void msanGoWait(unsigned long a1, unsigned long a2, unsigned long a3, unsigned long a4, unsigned long a5, unsigned long a6) {
	sigset_t mask;

	sigemptyset(&mask);
        sigsuspend(&mask);
}

extern void GoRun(void);

// Yes, you can have definitions if you use //export, as long as they are weak.

int val __attribute__ ((weak));

int run(void) __attribute__ ((weak));

int run() {
	val = 1;
	GoRun();
	return val;
}

void setVal(int) __attribute__ ((weak));

void setVal(int i) {
	val = i;
}
*/
import "C"

import "runtime"

//export GoRun
func GoRun() {

static void ioHandler(int signo, siginfo_t* info, void* ctxt) {
}

// Set up the SIGIO signal handler in a high priority constructor, so
// that it is installed before the Go code starts.

static void init(void) __attribute__ ((constructor (200)));

static void init() {
	struct sigaction sa;

	memset(&sa, 0, sizeof sa);
	sa.sa_sigaction = ioHandler;
	if (sigemptyset(&sa.sa_mask) < 0) {
		die("sigemptyset");
	}

// Copyright 2019 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.

extern int weaksym __attribute__((__weak__));
int weaksym = 42;

int foo1()
{
	return weaksym;

// Copyright 2019 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.

extern int weaksym __attribute__((__weak__));
int weaksym = 42;

int foo2()
{
	return weaksym;

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

package main

/*
extern int *GoFn(int *);

// Yes, you can have definitions if you use //export, as long as they are weak.
int f(void) __attribute__ ((weak));

int f() {
  int i;
  int *p = GoFn(&i);
  if (*p != 12345)
    return 0;
  return 1;
}
*/
import "C"

//export GoFn
func GoFn(p *C.int) *C.int {
	*p = C.int(12345)

	if *importRuntimeCgo {
		fmt.Fprintf(fm, "void crosscall2(void(*fn)(void*) __attribute__((unused)), void *a __attribute__((unused)), int c __attribute__((unused)), size_t ctxt __attribute__((unused))) { }\n")
		fmt.Fprintf(fm, "size_t _cgo_wait_runtime_init_done(void) { return 0; }\n")
		fmt.Fprintf(fm, "void _cgo_release_context(size_t ctxt __attribute__((unused))) { }\n")
		fmt.Fprintf(fm, "char* _cgo_topofstack(void) { return (char*)0; }\n")

/*
#include <time.h>
#include <unistd.h>

extern void Nop(char*);

// Use weak as a hack to permit defining a function even though we use export.
void poison() __attribute__ ((weak));

// Poison the stack.
void poison() {
	char a[1024];
	Nop(&a[0]);
}

*/
import "C"

import (
	"runtime"
)

func main() {
	runtime.MemProfileRate = 1
	start(100)