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| author | Mike Pall <mike> | 2017-03-08 22:59:44 +0100 |
|---|---|---|
| committer | Mike Pall <mike> | 2017-03-08 22:59:44 +0100 |
| commit | 4e308361bf730ef3d288db5b71489ecf442f738c (patch) | |
| tree | 2578459d15eaa93433303cd4e6b9b62ab845edba | |
| parent | ff648369aa1f028750afa517ac095577ed8278d1 (diff) | |
| download | luajit-4e308361bf730ef3d288db5b71489ecf442f738c.tar.gz luajit-4e308361bf730ef3d288db5b71489ecf442f738c.tar.bz2 luajit-4e308361bf730ef3d288db5b71489ecf442f738c.zip | |
Fix overly restrictive range calculation in mcode allocation.
Contributed by Alexey Kopytov.
| -rw-r--r-- | src/lj_mcode.c | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/src/lj_mcode.c b/src/lj_mcode.c index b363136d..f0cf22ca 100644 --- a/src/lj_mcode.c +++ b/src/lj_mcode.c | |||
| @@ -239,11 +239,11 @@ static void *mcode_alloc(jit_State *J, size_t sz) | |||
| 239 | return p; | 239 | return p; |
| 240 | if (p) mcode_free(J, p, sz); /* Free badly placed area. */ | 240 | if (p) mcode_free(J, p, sz); /* Free badly placed area. */ |
| 241 | } | 241 | } |
| 242 | /* Next try probing pseudo-random addresses. */ | 242 | /* Next try probing 64K-aligned pseudo-random addresses. */ |
| 243 | do { | 243 | do { |
| 244 | hint = (0x78fb ^ LJ_PRNG_BITS(J, 15)) << 16; /* 64K aligned. */ | 244 | hint = LJ_PRNG_BITS(J, LJ_TARGET_JUMPRANGE-16) << 16; |
| 245 | } while (!(hint + sz < range)); | 245 | } while (!(hint + sz < range+range)); |
| 246 | hint = target + hint - (range>>1); | 246 | hint = target + hint - range; |
| 247 | } | 247 | } |
| 248 | lj_trace_err(J, LJ_TRERR_MCODEAL); /* Give up. OS probably ignores hints? */ | 248 | lj_trace_err(J, LJ_TRERR_MCODEAL); /* Give up. OS probably ignores hints? */ |
| 249 | return NULL; | 249 | return NULL; |