diff options
| author | Mike Pall <mike> | 2012-10-07 17:12:28 +0200 |
|---|---|---|
| committer | Mike Pall <mike> | 2012-10-07 17:12:28 +0200 |
| commit | c681e009c0c5cba5622b863b914c19cfbf6cc147 (patch) | |
| tree | 17f15cd5a4ff0997234f777b389d0fa1663a1aff /src/vm_ppc.dasc | |
| parent | 2f5ed5d0df518a08a52fc125473b17d3a46c2267 (diff) | |
| download | luajit2-c681e009c0c5cba5622b863b914c19cfbf6cc147.tar.gz | |
PPC: Fix string.sub() range check.
Diffstat (limited to 'src/vm_ppc.dasc')
| -rw-r--r-- | src/vm_ppc.dasc | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/src/vm_ppc.dasc b/src/vm_ppc.dasc index 7eafebe1..5a6737ae 100644 --- a/src/vm_ppc.dasc +++ b/src/vm_ppc.dasc @@ -2100,10 +2100,10 @@ static void build_subroutines(BuildCtx *ctx) | b ->fff_newstr | |5: // Negative end or overflow. - | sub CARG2, TMP0, TMP2 - | srawi CARG2, CARG2, 31 - | andc TMP3, TMP3, CARG2 // end = end > len ? len : end+len+1 - | add TMP2, TMP0, TMP3 + | cmpw TMP0, TMP2 // len >= end? (signed compare) + | add TMP2, TMP0, TMP3 // Negative end: end = end+len+1. + | bge <2 + | mr TMP2, TMP0 // Overflow: end = len. | b <2 | |7: // Negative start or underflow. |