From: Helge Deller <[email protected]> The HP-UX 9 kernel uses two TLB insert instructions (0x05315440 and 0x05385400), which seem to be wrongly encoded fast TLB instructions, but similiar to the non-fast instructions idtlba r17,(r9) and idtlbp r24,(r9).
It's not clear, if those undocumented instructions were used by mistake, or intentionally. Either way, this patch allows qemu to handle those instructions, so that a HP-UX 9 boot-CD can now boot somewhat further (but still crashes due to other reasons afterwards). Signed-off-by: Helge Deller <[email protected]> Suggested-by: Philippe Mathieu-Daudé <[email protected]> Reviewed-by: Richard Henderson <[email protected]> --- target/hppa/insns.decode | 2 ++ 1 file changed, 2 insertions(+) diff --git a/target/hppa/insns.decode b/target/hppa/insns.decode index 13c6a55bf2..f700fe472e 100644 --- a/target/hppa/insns.decode +++ b/target/hppa/insns.decode @@ -164,6 +164,8 @@ ixtlbx 000001 b:5 r:5 ... 000000 addr:1 0 00000 \ # pcxl and pcxl2 Fast TLB Insert instructions ixtlbxf 000001 00000 r:5 00 0 data:1 01000 addr:1 0 00000 +# workaround for non-standard encoding as used in HP-UX 9 +ixtlbxf 000001 01001 r:5 01 0 data:1 01000 addr:1 0 00000 # pa2.0 tlb insert idtlbt and iitlbt instructions ixtlbt 000001 r2:5 r1:5 000 data:1 100000 0 00000 # idtlbt -- 2.54.0
