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[Msan] Fix the mmap_below_shadow.cc test to pass on FreeBSD
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Authored by kutuzov.viktor.84 on May 2 2015, 9:03 AM.

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kutuzov.viktor.84 retitled this revision from to [Msan] Fix the mmap_below_shadow.cc test to pass on FreeBSD.

kutuzov.viktor.84 updated this object.

kutuzov.viktor.84 edited the test plan for this revision. (Show Details)

kutuzov.viktor.84 added subscribers: Unknown Object (MLST), emaste.

LGTM

This revision is now accepted and ready to land.May 5 2015, 11:00 AM

This revision was automatically updated to reflect the committed changes.

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	#include <assert.h>			#include <assert.h>
	#include <errno.h>			#include <errno.h>
	#include <stdint.h>			#include <stdint.h>
	#include <sys/mman.h>			#include <sys/mman.h>

	int main(void) {			int main(void) {
	// Hint address just below shadow.			// Hint address just below shadow.
	#if defined(__x86_64__)			#if defined(__FreeBSD__) && defined(__x86_64__)
				uintptr_t hint = 0x0f0000000000ULL;
				const uintptr_t app_start = 0x000000000000ULL;
				#elif defined(__x86_64__)
	uintptr_t hint = 0x4f0000000000ULL;			uintptr_t hint = 0x4f0000000000ULL;
	const uintptr_t app_start = 0x600000000000ULL;			const uintptr_t app_start = 0x600000000000ULL;
	#elif defined (__mips64)			#elif defined (__mips64)
	uintptr_t hint = 0x4f00000000ULL;			uintptr_t hint = 0x4f00000000ULL;
	const uintptr_t app_start = 0x6000000000ULL;			const uintptr_t app_start = 0x6000000000ULL;
	#endif			#endif
	uintptr_t p = (uintptr_t)mmap(			uintptr_t p = (uintptr_t)mmap(
	(void *)hint, 4096, PROT_WRITE,			(void *)hint, 4096, PROT_WRITE,
	MAP_PRIVATE \| MAP_ANONYMOUS \| (FIXED ? MAP_FIXED : 0), -1, 0);			MAP_PRIVATE \| MAP_ANONYMOUS \| (FIXED ? MAP_FIXED : 0), -1, 0);
	if (FIXED)			if (FIXED)
	assert(p == (uintptr_t)-1 && errno == EINVAL);			assert(p == (uintptr_t)-1 && errno == EINVAL);
	else			else
	assert(p >= app_start);			assert(p >= app_start);
	return 0;			return 0;
	}			}