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Atmosphere/tests/TestSvc/source/test_thread_creation.cpp
2021-11-08 13:29:00 -08:00

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/*
* Copyright (c) Atmosphère-NX
*
* This program is free software; you can redistribute it and/or modify it
* under the terms and conditions of the GNU General Public License,
* version 2, as published by the Free Software Foundation.
*
* This program is distributed in the hope it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
* more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include <stratosphere.hpp>
#include "util_common.hpp"
#include "util_scoped_heap.hpp"
namespace ams::test {
void TestThreadCreateRegistersOnFunctionEntry(void *ctx);
DOCTEST_TEST_CASE( "Creating a thread results in fixed register contents." ) {
/* Create heap. */
ScopedHeap heap(os::MemoryPageSize);
/* Create register buffer. */
u64 thread_registers[32];
std::memset(thread_registers, 0xCC, sizeof(thread_registers));
/* Create thread. */
svc::Handle thread_handle;
DOCTEST_CHECK(R_SUCCEEDED(svc::CreateThread(std::addressof(thread_handle), reinterpret_cast<uintptr_t>(&TestThreadCreateRegistersOnFunctionEntry), reinterpret_cast<uintptr_t>(thread_registers), heap.GetAddress() + os::MemoryPageSize, HighestTestPriority, NumCores - 1)));
/* Start thread. */
DOCTEST_CHECK(R_SUCCEEDED(svc::StartThread(thread_handle)));
/* Wait for thread to exit. */
s32 dummy;
DOCTEST_CHECK(R_SUCCEEDED(svc::WaitSynchronization(std::addressof(dummy), std::addressof(thread_handle), 1, -1)));
/* Close thread handle. */
DOCTEST_CHECK(R_SUCCEEDED(svc::CloseHandle(thread_handle)));
/* Check thread initial registers. */
for (size_t i = 0; i < util::size(thread_registers); ++i) {
if (i == 0) {
/* X0 is argument. */
DOCTEST_CHECK(thread_registers[i] == reinterpret_cast<uintptr_t>(thread_registers));
} else if (i == 18) {
/* X18 is an odd cfi value. */
DOCTEST_CHECK(thread_registers[i] != 0);
DOCTEST_CHECK((thread_registers[i] & 0x1) != 0);
} else if (i == 31) {
/* SP is user-provided sp. */
DOCTEST_CHECK(thread_registers[i] == (heap.GetAddress() + os::MemoryPageSize));
} else {
/* All other registers are zero. */
DOCTEST_CHECK(thread_registers[i] == 0);
}
}
}
}