dev: IDE Disk: Handle bad IDE image size

Handle bad IDE disk image size 0. When image size is 0, gem5 will cause an
exception with log "Floating point exception (core dumped)".

Committed by: Nilay Vaish <nilay@cs.wisc.edu>

diff --git a/src/dev/ide_disk.cc b/src/dev/ide_disk.cc
index 7298da52173eeb66fe2ccf79f287a4382a8f397d..2c8dfceb1adf159ee58af87f70a228dab59fb372 100644 (file)
--- a/src/dev/ide_disk.cc
+++ b/src/dev/ide_disk.cc
@@ -90,6 +90,8 @@ IdeDisk::IdeDisk(const Params *p)
     } else {
         if (lba_size >= 63)
             sectors = 63;
+        else if (lba_size == 0)
+            panic("Bad IDE image size: 0\n");
         else
             sectors = lba_size;