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| author | Shenglei Zhang <shenglei.zhang@intel.com> | 2019-02-25 13:37:56 +0800 |
|---|---|---|
| committer | Liming Gao <liming.gao@intel.com> | 2019-03-27 20:11:22 +0800 |
| commit | f67786e381717ee02570d33445ea8c326986b2ac (patch) | |
| tree | b8ab465fb348d602cce5a1334c149c8acab13051 /BaseTools | |
| parent | a068102296180b7e2481467080c84e02e89de980 (diff) | |
| download | edk2-f67786e381717ee02570d33445ea8c326986b2ac.tar.gz edk2-f67786e381717ee02570d33445ea8c326986b2ac.tar.bz2 edk2-f67786e381717ee02570d33445ea8c326986b2ac.zip | |
BaseTools/TianoCompress: Improve performance of boundary validation
The boundary validation checking in MakeTable() performs on
every loop iteration. This could be improved by checking
just once before the loop.
https://bugzilla.tianocore.org/show_bug.cgi?id=1329
Cc: Bob Feng <bob.c.feng@intel.com>
Cc: Liming Gao <liming.gao@intel.com>
Cc: Yonghong Zhu <yonghong.zhu@intel.com>
Contributed-under: TianoCore Contribution Agreement 1.1
Signed-off-by: Shenglei Zhang <shenglei.zhang@intel.com>
Reviewed-by: Liming Gao <liming.gao@intel.com>
Diffstat (limited to 'BaseTools')
| -rw-r--r-- | BaseTools/Source/C/TianoCompress/TianoCompress.c | 7 |
1 files changed, 4 insertions, 3 deletions
diff --git a/BaseTools/Source/C/TianoCompress/TianoCompress.c b/BaseTools/Source/C/TianoCompress/TianoCompress.c index 29b11c597f..ae88074360 100644 --- a/BaseTools/Source/C/TianoCompress/TianoCompress.c +++ b/BaseTools/Source/C/TianoCompress/TianoCompress.c @@ -2281,10 +2281,11 @@ Returns: if (Len <= TableBits) {
+ if (Start[Len] >= NextCode || NextCode > MaxTableLength){
+ return (UINT16) BAD_TABLE;
+ }
+
for (Index = Start[Len]; Index < NextCode; Index++) {
- if (Index >= MaxTableLength) {
- return (UINT16) BAD_TABLE;
- }
Table[Index] = Char;
}
|