// Copyright 2016 The Fuchsia Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#include <assert.h>
#include <zircon/process.h>
#include <zircon/syscalls.h>
#include <unittest/unittest.h>
#include <stdio.h>
#include <zircon/compiler.h>

extern void thread_entry(uintptr_t arg);

int print_fail(void) {
    EXPECT_TRUE(false, "Failed");
    zx_thread_exit();
    return 1; // Not reached
}

// create a thread using the raw zircon api.
// cannot use a higher level api because they'll use trampoline functions that'll trash
// registers on entry.
zx_status_t raw_thread_create(void (*thread_entry)(uintptr_t arg), uintptr_t arg,
                               zx_handle_t* out)
{
    // preallocated stack to satisfy the thread we create
    static uint8_t stack[1024] __ALIGNED(16);

    zx_handle_t handle;
    zx_status_t status = zx_thread_create(zx_process_self(), "", 0, 0, &handle);
    if (status < 0)
        return status;

    status = zx_thread_start(handle, (uintptr_t)thread_entry,
                             (uintptr_t)stack + sizeof(stack),
                             arg, 0);
    if (status < 0) {
        zx_handle_close(handle);
        return status;
    }

    *out = handle;
    return ZX_OK;
}

bool tis_test(void) {
    BEGIN_TEST;
    uintptr_t arg = 0x1234567890abcdef;
    zx_handle_t handle = ZX_HANDLE_INVALID;
    zx_status_t status = raw_thread_create(thread_entry, arg, & handle);
    ASSERT_EQ(status, ZX_OK, "Error while thread creation");

    status = zx_object_wait_one(handle, ZX_THREAD_TERMINATED, ZX_TIME_INFINITE, NULL);
    ASSERT_GE(status, 0, "Error while thread wait");
    END_TEST;
}

BEGIN_TEST_CASE(tis_tests)
RUN_TEST(tis_test)
END_TEST_CASE(tis_tests)