diff options
| -rw-r--r-- | tests/test-progs/page-access-wrap/Makefile | 20 | ||||
| -rw-r--r-- | tests/test-progs/page-access-wrap/page-access-wrap.cpp | 67 |
2 files changed, 87 insertions, 0 deletions
diff --git a/tests/test-progs/page-access-wrap/Makefile b/tests/test-progs/page-access-wrap/Makefile new file mode 100644 index 000000000..41e7a1819 --- /dev/null +++ b/tests/test-progs/page-access-wrap/Makefile @@ -0,0 +1,20 @@ + +CPP := g++ + +TEST_OBJS := page-access-wrap.o +TEST_PROGS := $(TEST_OBJS:.o=) + +# ==== Rules ================================================================== + +.PHONY: default clean + +default: $(TEST_PROGS) + +clean: + $(RM) $(TEST_OBJS) $(TEST_PROGS) + +$(TEST_PROGS): $(TEST_OBJS) + $(CPP) -static -o $@ $@.o + +%.o: %.c Makefile + $(CPP) -c -o $@ $*.c -msse3 diff --git a/tests/test-progs/page-access-wrap/page-access-wrap.cpp b/tests/test-progs/page-access-wrap/page-access-wrap.cpp new file mode 100644 index 000000000..d4cc75e1e --- /dev/null +++ b/tests/test-progs/page-access-wrap/page-access-wrap.cpp @@ -0,0 +1,67 @@ +/* + * Copyright (c) 2019 Advanced Micro Devices, Inc. + * All rights reserved. + * + * For use for simulation and test purposes only + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * + * 2. 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. + * + * 3. Neither the name of the copyright holder nor the names of its + * contributors may be used to endorse or promote products derived from this + * software without specific prior written permission. + * + * 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 HOLDER 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. + * + * Authors: Brandon Potter + */ + +#include <sys/mman.h> + +#include <cstdint> +#include <cstdio> +#include <cstdlib> +#include <ctime> + +int main(void) +{ + uint64_t page_size = 0x1000; + uint64_t num_pages = 0x10000; + uint64_t length = page_size * num_pages; + + void *raw = mmap(NULL, length, PROT_WRITE, MAP_ANON|MAP_PRIVATE, -1, 0); + uint8_t *mem = reinterpret_cast<uint8_t*>(raw); + + srand(0xABCD); + + uint64_t last_byte = page_size - 1; + uint64_t page_boundaries = num_pages - 1; + + for (int i = 0; i < 2000; i++) { + uint64_t random_boundary = rand() % page_boundaries; + uint64_t boundary_offset = random_boundary * page_size; + uint64_t boundary_last_byte = boundary_offset + last_byte; + uint32_t *poke = reinterpret_cast<uint32_t*>(mem + boundary_last_byte); + printf("%p\n", poke); + uint32_t value = *poke; + } + + return 0; +} |