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//===-- test.c ------------------------------------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
//
// Sanity test for Go runtime.
//
//===----------------------------------------------------------------------===//
#include <sys/mman.h>
#include <errno.h>
#include <stdio.h>
#include <stdlib.h>
void __tsan_init(void **thr, void **proc, void (*cb)(long, void*));
void __tsan_fini();
void __tsan_map_shadow(void *addr, unsigned long size);
void __tsan_go_start(void *thr, void **chthr, void *pc);
void __tsan_go_end(void *thr);
void __tsan_proc_create(void **pproc);
void __tsan_proc_destroy(void *proc);
void __tsan_proc_wire(void *proc, void *thr);
void __tsan_proc_unwire(void *proc, void *thr);
void __tsan_read(void *thr, void *addr, void *pc);
void __tsan_write(void *thr, void *addr, void *pc);
void __tsan_func_enter(void *thr, void *pc);
void __tsan_func_exit(void *thr);
void __tsan_malloc(void *thr, void *pc, void *p, unsigned long sz);
void __tsan_free(void *p, unsigned long sz);
void __tsan_acquire(void *thr, void *addr);
void __tsan_release(void *thr, void *addr);
void __tsan_release_merge(void *thr, void *addr);
void *current_proc;
void symbolize_cb(long cmd, void *ctx) {
switch (cmd) {
case 0:
if (current_proc == 0)
abort();
*(void**)ctx = current_proc;
}
}
/*
* See lib/tsan/rtl/tsan_platform.h for details of what the memory layout
* of Go programs looks like. To prevent running over existing mappings,
* we pick an address slightly inside the Go heap region.
*/
void *go_heap = (void *)0xC011110000;
char *buf0;
void foobar() {}
void barfoo() {}
int main(void) {
void *thr0 = 0;
void *proc0 = 0;
__tsan_init(&thr0, &proc0, symbolize_cb);
current_proc = proc0;
// Allocate something resembling a heap in Go.
buf0 = mmap(go_heap, 16384, PROT_READ | PROT_WRITE,
MAP_PRIVATE | MAP_FIXED | MAP_ANON, -1, 0);
if (buf0 == MAP_FAILED) {
fprintf(stderr, "failed to allocate Go-like heap at %p; errno %d\n",
go_heap, errno);
return 1;
}
char *buf = (char*)((unsigned long)buf0 + (64<<10) - 1 & ~((64<<10) - 1));
__tsan_map_shadow(buf, 4096);
__tsan_malloc(thr0, (char*)&barfoo + 1, buf, 10);
__tsan_free(buf, 10);
__tsan_func_enter(thr0, (char*)&main + 1);
__tsan_malloc(thr0, (char*)&barfoo + 1, buf, 10);
__tsan_release(thr0, buf);
__tsan_release_merge(thr0, buf);
void *thr1 = 0;
__tsan_go_start(thr0, &thr1, (char*)&barfoo + 1);
void *thr2 = 0;
__tsan_go_start(thr0, &thr2, (char*)&barfoo + 1);
__tsan_func_exit(thr0);
__tsan_func_enter(thr1, (char*)&foobar + 1);
__tsan_func_enter(thr1, (char*)&foobar + 1);
__tsan_write(thr1, buf, (char*)&barfoo + 1);
__tsan_acquire(thr1, buf);
__tsan_func_exit(thr1);
__tsan_func_exit(thr1);
__tsan_go_end(thr1);
void *proc1 = 0;
__tsan_proc_create(&proc1);
current_proc = proc1;
__tsan_func_enter(thr2, (char*)&foobar + 1);
__tsan_read(thr2, buf, (char*)&barfoo + 1);
__tsan_free(buf, 10);
__tsan_func_exit(thr2);
__tsan_go_end(thr2);
__tsan_proc_destroy(proc1);
current_proc = proc0;
__tsan_fini();
return 0;
}
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