platform_bionic/tests/sys_cachectl_test.cpp
Elliott Hughes 74d9765be9 Add __riscv_flush_icache() to <sys/cachectl.h>.
The obsolete mips header rides again!

The most interesting part of this change is that I've removed the hack
that meant that all system call wrappers starting with `__` defaulted to
being hidden symbols. That's no longer useful given our linker scripts,
and it actively got in the way here because the public libc symbol
actually starts with `__` in glibc, and it would be weird and annoying
for developers if we chose a different name.

Test: strace
Change-Id: I230479787895e8e34f566ade36346a8241eea998
2023-07-12 16:30:55 -07:00

44 lines
1.9 KiB
C++

/*
* Copyright (C) 2023 The Android Open Source Project
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#include <gtest/gtest.h>
#if __has_include(<sys/cachectl.h>)
#include <sys/cachectl.h>
#endif
TEST(sys_cachectl, __riscv_flush_icache) {
#if defined(__riscv) && __has_include(<sys/cachectl.h>)
// As of Linux 6.4, the address range is ignored (so nullptr is fine),
// and the flags you actually want are 0 ("all threads"),
// but we test the unusual flag just to make sure it works.
ASSERT_EQ(0, __riscv_flush_icache(nullptr, nullptr, SYS_RISCV_FLUSH_ICACHE_LOCAL));
#else
GTEST_SKIP() << "__riscv_flush_icache requires riscv64";
#endif
}