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Improve placement of dynamically generated code on x64.

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This commit is contained in:
Mike Pall 2010-03-07 14:33:52 +01:00
parent e38fbb3d0a
commit e40b001a79
1 changed files with 1 additions and 1 deletions
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2
src/lj_mcode.c
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@ -128,7 +128,7 @@ static void *mcode_alloc(jit_State *J, size_t sz, int prot)
uintptr_t hint;
void *p;
do {
hint = LJ_PRNG_BITS(J, 15) << 16; /* 64K aligned. */
hint = (0x78fb ^ LJ_PRNG_BITS(J, 15)) << 16; /* 64K aligned. */
} while (!(hint + sz < range &&
target + hint - (range>>1) < (uintptr_t)1<<47));
p = mcode_alloc_at(J, target + hint - (range>>1), sz, prot);