summaryrefslogtreecommitdiffstats
path: root/qemu/tests/tcg/test-mmap.c
diff options
context:
space:
mode:
Diffstat (limited to 'qemu/tests/tcg/test-mmap.c')
-rw-r--r--qemu/tests/tcg/test-mmap.c484
1 files changed, 0 insertions, 484 deletions
diff --git a/qemu/tests/tcg/test-mmap.c b/qemu/tests/tcg/test-mmap.c
deleted file mode 100644
index 3982fa2c7..000000000
--- a/qemu/tests/tcg/test-mmap.c
+++ /dev/null
@@ -1,484 +0,0 @@
-/*
- * Small test program to verify simulated mmap behaviour.
- *
- * When running qemu-linux-user with the -p flag, you may need to tell
- * this test program about the pagesize because getpagesize() will not reflect
- * the -p choice. Simply pass one argument being the pagesize.
- *
- * Copyright (c) 2007 AXIS Communications AB
- * Written by Edgar E. Iglesias.
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that 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 <stdio.h>
-#include <stdlib.h>
-#include <stdint.h>
-#include <string.h>
-#include <unistd.h>
-
-#include <sys/mman.h>
-
-#define D(x)
-
-#define fail_unless(x) \
-do \
-{ \
- if (!(x)) { \
- fprintf (stderr, "FAILED at %s:%d\n", __FILE__, __LINE__); \
- exit (EXIT_FAILURE); \
- } \
-} while (0);
-
-unsigned char *dummybuf;
-static unsigned int pagesize;
-static unsigned int pagemask;
-int test_fd;
-size_t test_fsize;
-
-void check_aligned_anonymous_unfixed_mmaps(void)
-{
- void *p1;
- void *p2;
- void *p3;
- void *p4;
- void *p5;
- uintptr_t p;
- int i;
-
- fprintf (stderr, "%s", __func__);
- for (i = 0; i < 0x1fff; i++)
- {
- size_t len;
-
- len = pagesize + (pagesize * i & 7);
- p1 = mmap(NULL, len, PROT_READ,
- MAP_PRIVATE | MAP_ANONYMOUS, -1, 0);
- p2 = mmap(NULL, len, PROT_READ,
- MAP_PRIVATE | MAP_ANONYMOUS, -1, 0);
- p3 = mmap(NULL, len, PROT_READ,
- MAP_PRIVATE | MAP_ANONYMOUS, -1, 0);
- p4 = mmap(NULL, len, PROT_READ,
- MAP_PRIVATE | MAP_ANONYMOUS, -1, 0);
- p5 = mmap(NULL, len, PROT_READ,
- MAP_PRIVATE | MAP_ANONYMOUS, -1, 0);
-
- /* Make sure we get pages aligned with the pagesize. The
- target expects this. */
- fail_unless (p1 != MAP_FAILED);
- fail_unless (p2 != MAP_FAILED);
- fail_unless (p3 != MAP_FAILED);
- fail_unless (p4 != MAP_FAILED);
- fail_unless (p5 != MAP_FAILED);
- p = (uintptr_t) p1;
- D(printf ("p=%x\n", p));
- fail_unless ((p & pagemask) == 0);
- p = (uintptr_t) p2;
- fail_unless ((p & pagemask) == 0);
- p = (uintptr_t) p3;
- fail_unless ((p & pagemask) == 0);
- p = (uintptr_t) p4;
- fail_unless ((p & pagemask) == 0);
- p = (uintptr_t) p5;
- fail_unless ((p & pagemask) == 0);
-
- /* Make sure we can read from the entire area. */
- memcpy (dummybuf, p1, pagesize);
- memcpy (dummybuf, p2, pagesize);
- memcpy (dummybuf, p3, pagesize);
- memcpy (dummybuf, p4, pagesize);
- memcpy (dummybuf, p5, pagesize);
-
- munmap (p1, len);
- munmap (p2, len);
- munmap (p3, len);
- munmap (p4, len);
- munmap (p5, len);
- }
- fprintf (stderr, " passed\n");
-}
-
-void check_large_anonymous_unfixed_mmap(void)
-{
- void *p1;
- uintptr_t p;
- size_t len;
-
- fprintf (stderr, "%s", __func__);
-
- len = 0x02000000;
- p1 = mmap(NULL, len, PROT_READ,
- MAP_PRIVATE | MAP_ANONYMOUS, -1, 0);
-
- /* Make sure we get pages aligned with the pagesize. The
- target expects this. */
- fail_unless (p1 != MAP_FAILED);
- p = (uintptr_t) p1;
- fail_unless ((p & pagemask) == 0);
-
- /* Make sure we can read from the entire area. */
- memcpy (dummybuf, p1, pagesize);
- munmap (p1, len);
- fprintf (stderr, " passed\n");
-}
-
-void check_aligned_anonymous_unfixed_colliding_mmaps(void)
-{
- char *p1;
- char *p2;
- char *p3;
- uintptr_t p;
- int i;
-
- fprintf (stderr, "%s", __func__);
- for (i = 0; i < 0x2fff; i++)
- {
- int nlen;
- p1 = mmap(NULL, pagesize, PROT_READ,
- MAP_PRIVATE | MAP_ANONYMOUS, -1, 0);
- fail_unless (p1 != MAP_FAILED);
- p = (uintptr_t) p1;
- fail_unless ((p & pagemask) == 0);
- memcpy (dummybuf, p1, pagesize);
-
- p2 = mmap(NULL, pagesize, PROT_READ,
- MAP_PRIVATE | MAP_ANONYMOUS, -1, 0);
- fail_unless (p2 != MAP_FAILED);
- p = (uintptr_t) p2;
- fail_unless ((p & pagemask) == 0);
- memcpy (dummybuf, p2, pagesize);
-
-
- munmap (p1, pagesize);
- nlen = pagesize * 8;
- p3 = mmap(NULL, nlen, PROT_READ,
- MAP_PRIVATE | MAP_ANONYMOUS, -1, 0);
- fail_unless (p3 != MAP_FAILED);
-
- /* Check if the mmaped areas collide. */
- if (p3 < p2
- && (p3 + nlen) > p2)
- fail_unless (0);
-
- memcpy (dummybuf, p3, pagesize);
-
- /* Make sure we get pages aligned with the pagesize. The
- target expects this. */
- p = (uintptr_t) p3;
- fail_unless ((p & pagemask) == 0);
- munmap (p2, pagesize);
- munmap (p3, nlen);
- }
- fprintf (stderr, " passed\n");
-}
-
-void check_aligned_anonymous_fixed_mmaps(void)
-{
- char *addr;
- void *p1;
- uintptr_t p;
- int i;
-
- /* Find a suitable address to start with. */
- addr = mmap(NULL, pagesize * 40, PROT_READ | PROT_WRITE,
- MAP_PRIVATE | MAP_ANONYMOUS,
- -1, 0);
- fprintf (stderr, "%s addr=%p", __func__, addr);
- fail_unless (addr != MAP_FAILED);
-
- for (i = 0; i < 40; i++)
- {
- /* Create submaps within our unfixed map. */
- p1 = mmap(addr, pagesize, PROT_READ,
- MAP_PRIVATE | MAP_ANONYMOUS | MAP_FIXED,
- -1, 0);
- /* Make sure we get pages aligned with the pagesize.
- The target expects this. */
- p = (uintptr_t) p1;
- fail_unless (p1 == addr);
- fail_unless ((p & pagemask) == 0);
- memcpy (dummybuf, p1, pagesize);
- munmap (p1, pagesize);
- addr += pagesize;
- }
- fprintf (stderr, " passed\n");
-}
-
-void check_aligned_anonymous_fixed_mmaps_collide_with_host(void)
-{
- char *addr;
- void *p1;
- uintptr_t p;
- int i;
-
- /* Find a suitable address to start with. Right were the x86 hosts
- stack is. */
- addr = ((void *)0x80000000);
- fprintf (stderr, "%s addr=%p", __func__, addr);
- fprintf (stderr, "FIXME: QEMU fails to track pages used by the host.");
-
- for (i = 0; i < 20; i++)
- {
- /* Create submaps within our unfixed map. */
- p1 = mmap(addr, pagesize, PROT_READ | PROT_WRITE,
- MAP_PRIVATE | MAP_ANONYMOUS | MAP_FIXED,
- -1, 0);
- /* Make sure we get pages aligned with the pagesize.
- The target expects this. */
- p = (uintptr_t) p1;
- fail_unless (p1 == addr);
- fail_unless ((p & pagemask) == 0);
- memcpy (p1, dummybuf, pagesize);
- munmap (p1, pagesize);
- addr += pagesize;
- }
- fprintf (stderr, " passed\n");
-}
-
-void check_file_unfixed_mmaps(void)
-{
- unsigned int *p1, *p2, *p3;
- uintptr_t p;
- int i;
-
- fprintf (stderr, "%s", __func__);
- for (i = 0; i < 0x10; i++)
- {
- size_t len;
-
- len = pagesize;
- p1 = mmap(NULL, len, PROT_READ,
- MAP_PRIVATE,
- test_fd, 0);
- p2 = mmap(NULL, len, PROT_READ,
- MAP_PRIVATE,
- test_fd, pagesize);
- p3 = mmap(NULL, len, PROT_READ,
- MAP_PRIVATE,
- test_fd, pagesize * 2);
-
- fail_unless (p1 != MAP_FAILED);
- fail_unless (p2 != MAP_FAILED);
- fail_unless (p3 != MAP_FAILED);
-
- /* Make sure we get pages aligned with the pagesize. The
- target expects this. */
- p = (uintptr_t) p1;
- fail_unless ((p & pagemask) == 0);
- p = (uintptr_t) p2;
- fail_unless ((p & pagemask) == 0);
- p = (uintptr_t) p3;
- fail_unless ((p & pagemask) == 0);
-
- /* Verify that the file maps was made correctly. */
- D(printf ("p1=%d p2=%d p3=%d\n", *p1, *p2, *p3));
- fail_unless (*p1 == 0);
- fail_unless (*p2 == (pagesize / sizeof *p2));
- fail_unless (*p3 == ((pagesize * 2) / sizeof *p3));
-
- memcpy (dummybuf, p1, pagesize);
- memcpy (dummybuf, p2, pagesize);
- memcpy (dummybuf, p3, pagesize);
- munmap (p1, len);
- munmap (p2, len);
- munmap (p3, len);
- }
- fprintf (stderr, " passed\n");
-}
-
-void check_file_unfixed_eof_mmaps(void)
-{
- char *cp;
- unsigned int *p1;
- uintptr_t p;
- int i;
-
- fprintf (stderr, "%s", __func__);
- for (i = 0; i < 0x10; i++)
- {
- p1 = mmap(NULL, pagesize, PROT_READ,
- MAP_PRIVATE,
- test_fd,
- (test_fsize - sizeof *p1) & ~pagemask);
-
- fail_unless (p1 != MAP_FAILED);
-
- /* Make sure we get pages aligned with the pagesize. The
- target expects this. */
- p = (uintptr_t) p1;
- fail_unless ((p & pagemask) == 0);
- /* Verify that the file maps was made correctly. */
- fail_unless (p1[(test_fsize & pagemask) / sizeof *p1 - 1]
- == ((test_fsize - sizeof *p1) / sizeof *p1));
-
- /* Verify that the end of page is accessible and zeroed. */
- cp = (void *) p1;
- fail_unless (cp[pagesize - 4] == 0);
- munmap (p1, pagesize);
- }
- fprintf (stderr, " passed\n");
-}
-
-void check_file_fixed_eof_mmaps(void)
-{
- char *addr;
- char *cp;
- unsigned int *p1;
- uintptr_t p;
- int i;
-
- /* Find a suitable address to start with. */
- addr = mmap(NULL, pagesize * 44, PROT_READ,
- MAP_PRIVATE | MAP_ANONYMOUS,
- -1, 0);
-
- fprintf (stderr, "%s addr=%p", __func__, (void *)addr);
- fail_unless (addr != MAP_FAILED);
-
- for (i = 0; i < 0x10; i++)
- {
- /* Create submaps within our unfixed map. */
- p1 = mmap(addr, pagesize, PROT_READ,
- MAP_PRIVATE | MAP_FIXED,
- test_fd,
- (test_fsize - sizeof *p1) & ~pagemask);
-
- fail_unless (p1 != MAP_FAILED);
-
- /* Make sure we get pages aligned with the pagesize. The
- target expects this. */
- p = (uintptr_t) p1;
- fail_unless ((p & pagemask) == 0);
-
- /* Verify that the file maps was made correctly. */
- fail_unless (p1[(test_fsize & pagemask) / sizeof *p1 - 1]
- == ((test_fsize - sizeof *p1) / sizeof *p1));
-
- /* Verify that the end of page is accessible and zeroed. */
- cp = (void *)p1;
- fail_unless (cp[pagesize - 4] == 0);
- munmap (p1, pagesize);
- addr += pagesize;
- }
- fprintf (stderr, " passed\n");
-}
-
-void check_file_fixed_mmaps(void)
-{
- unsigned char *addr;
- unsigned int *p1, *p2, *p3, *p4;
- int i;
-
- /* Find a suitable address to start with. */
- addr = mmap(NULL, pagesize * 40 * 4, PROT_READ,
- MAP_PRIVATE | MAP_ANONYMOUS,
- -1, 0);
- fprintf (stderr, "%s addr=%p", __func__, (void *)addr);
- fail_unless (addr != MAP_FAILED);
-
- for (i = 0; i < 40; i++)
- {
- p1 = mmap(addr, pagesize, PROT_READ,
- MAP_PRIVATE | MAP_FIXED,
- test_fd, 0);
- p2 = mmap(addr + pagesize, pagesize, PROT_READ,
- MAP_PRIVATE | MAP_FIXED,
- test_fd, pagesize);
- p3 = mmap(addr + pagesize * 2, pagesize, PROT_READ,
- MAP_PRIVATE | MAP_FIXED,
- test_fd, pagesize * 2);
- p4 = mmap(addr + pagesize * 3, pagesize, PROT_READ,
- MAP_PRIVATE | MAP_FIXED,
- test_fd, pagesize * 3);
-
- /* Make sure we get pages aligned with the pagesize.
- The target expects this. */
- fail_unless (p1 == (void *)addr);
- fail_unless (p2 == (void *)addr + pagesize);
- fail_unless (p3 == (void *)addr + pagesize * 2);
- fail_unless (p4 == (void *)addr + pagesize * 3);
-
- /* Verify that the file maps was made correctly. */
- fail_unless (*p1 == 0);
- fail_unless (*p2 == (pagesize / sizeof *p2));
- fail_unless (*p3 == ((pagesize * 2) / sizeof *p3));
- fail_unless (*p4 == ((pagesize * 3) / sizeof *p4));
-
- memcpy (dummybuf, p1, pagesize);
- memcpy (dummybuf, p2, pagesize);
- memcpy (dummybuf, p3, pagesize);
- memcpy (dummybuf, p4, pagesize);
-
- munmap (p1, pagesize);
- munmap (p2, pagesize);
- munmap (p3, pagesize);
- munmap (p4, pagesize);
- addr += pagesize * 4;
- }
- fprintf (stderr, " passed\n");
-}
-
-void checked_write(int fd, const void *buf, size_t count)
-{
- ssize_t rc = write(fd, buf, count);
- fail_unless(rc == count);
-}
-
-int main(int argc, char **argv)
-{
- char tempname[] = "/tmp/.cmmapXXXXXX";
- unsigned int i;
-
- /* Trust the first argument, otherwise probe the system for our
- pagesize. */
- if (argc > 1)
- pagesize = strtoul(argv[1], NULL, 0);
- else
- pagesize = sysconf(_SC_PAGESIZE);
-
- /* Assume pagesize is a power of two. */
- pagemask = pagesize - 1;
- dummybuf = malloc (pagesize);
- printf ("pagesize=%u pagemask=%x\n", pagesize, pagemask);
-
- test_fd = mkstemp(tempname);
- unlink(tempname);
-
- /* Fill the file with int's counting from zero and up. */
- for (i = 0; i < (pagesize * 4) / sizeof i; i++) {
- checked_write(test_fd, &i, sizeof i);
- }
-
- /* Append a few extra writes to make the file end at non
- page boundary. */
- checked_write(test_fd, &i, sizeof i); i++;
- checked_write(test_fd, &i, sizeof i); i++;
- checked_write(test_fd, &i, sizeof i); i++;
-
- test_fsize = lseek(test_fd, 0, SEEK_CUR);
-
- /* Run the tests. */
- check_aligned_anonymous_unfixed_mmaps();
- check_aligned_anonymous_unfixed_colliding_mmaps();
- check_aligned_anonymous_fixed_mmaps();
- check_file_unfixed_mmaps();
- check_file_fixed_mmaps();
- check_file_fixed_eof_mmaps();
- check_file_unfixed_eof_mmaps();
-
- /* Fails at the moment. */
- /* check_aligned_anonymous_fixed_mmaps_collide_with_host(); */
-
- return EXIT_SUCCESS;
-}