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tests/tcg/multiarch: add vma-pthread.c

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Add a test that locklessly changes and exercises page protection bits
from various threads. This helps catch race conditions in the VMA
handling.

Acked-by: Alex Bennée <alex.bennee@linaro.org>
Signed-off-by: Ilya Leoshkevich <iii@linux.ibm.com>
Message-Id: <20221223120252.513319-1-iii@linux.ibm.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
This commit is contained in:
Ilya Leoshkevich 2022-12-23 13:02:52 +01:00 • committed by Richard Henderson
parent e630c0126c
commit d4846c33eb
4 changed files with 236 additions and 15 deletions
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25
tests/tcg/multiarch/nop_func.h Normal file
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/*
* No-op functions that can be safely copied.
*
* SPDX-License-Identifier: GPL-2.0-or-later
*/
#ifndef NOP_FUNC_H
#define NOP_FUNC_H
static const char nop_func[] = {
#if defined(__aarch64__)
0xc0, 0x03, 0x5f, 0xd6, /* ret */
#elif defined(__alpha__)
0x01, 0x80, 0xFA, 0x6B, /* ret */
#elif defined(__arm__)
0x1e, 0xff, 0x2f, 0xe1, /* bx lr */
#elif defined(__riscv)
0x67, 0x80, 0x00, 0x00, /* ret */
#elif defined(__s390__)
0x07, 0xfe, /* br %r14 */
#elif defined(__i386__) || defined(__x86_64__)
0xc3, /* ret */
#endif
};
#endif