On Sun, 3 Dec 2006 21:35:18 +0000, Ralf Baechle <ralf@xxxxxxxxxxxxxx> wrote:
> > It seems this commit break QEMU kernel ... or QEMU can not interpret
> > the TNE instruction correctly?
>
> Thiemo says that's indeed a possibility. Probably that feature has not
> been well tested in qemu.
I found the bug. "Trap If XXX" instructions are translated as it was
"Trap If XXX Immediate".
Index: target-mips/translate.c
===================================================================
RCS file: /sources/qemu/qemu/target-mips/translate.c,v
retrieving revision 1.27
diff -u -r1.27 translate.c
--- target-mips/translate.c 10 Dec 2006 22:08:10 -0000 1.27
+++ target-mips/translate.c 15 Dec 2006 16:16:07 -0000
@@ -1276,6 +1276,7 @@
GEN_LOAD_REG_TN(T1, rt);
cond = 1;
}
+ break;
case OPC_TEQI:
case OPC_TGEI:
case OPC_TGEIU:
---
Atsushi Nemoto
