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| author | ths | 2007-04-15 23:21:33 +0200 |
|---|---|---|
| committer | ths | 2007-04-15 23:21:33 +0200 |
| commit | 80c27194a7be757ef5a9cec978d1d8faaa4cee81 (patch) | |
| tree | d70b8fe5bf3574d586a01bf7194f95f65368b741 /target-mips/op_helper.c | |
| parent | Small code generation optimization. (diff) | |
| download | qemu-80c27194a7be757ef5a9cec978d1d8faaa4cee81.tar.gz qemu-80c27194a7be757ef5a9cec978d1d8faaa4cee81.tar.xz qemu-80c27194a7be757ef5a9cec978d1d8faaa4cee81.zip | |
Fix qemu SIGFPE caused by division-by-zero due to underflow.
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@2673 c046a42c-6fe2-441c-8c8c-71466251a162
Diffstat (limited to 'target-mips/op_helper.c')
| -rw-r--r-- | target-mips/op_helper.c | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/target-mips/op_helper.c b/target-mips/op_helper.c index 576787d3f4..14696aa925 100644 --- a/target-mips/op_helper.c +++ b/target-mips/op_helper.c @@ -216,6 +216,17 @@ void do_msubu (void) } #endif +#if HOST_LONG_BITS < 64 +void do_div (void) +{ + /* 64bit datatypes because we may see overflow/underflow. */ + if (T1 != 0) { + env->LO = (int32_t)((int64_t)(int32_t)T0 / (int32_t)T1); + env->HI = (int32_t)((int64_t)(int32_t)T0 % (int32_t)T1); + } +} +#endif + #ifdef TARGET_MIPS64 void do_dmult (void) { |