Re: [Qemu-devel] [PATCH] target/hppa: fix PSW Q bit behaviour to match hardware

2019-02-05 Thread Richard Henderson
On 1/29/19 7:14 PM, Sven Schnelle wrote: > PA-RISC specification says: "Setting the PSW Q-bit, PSW{28}, to 1 > with this instruction, if it was not already 1, is an undefined > operation." However, at least HP-UX 10.20 sets the Q bit from 0 to 1 > with the SSM instruction. Tested this both on HP900

[Qemu-devel] [PATCH] target/hppa: fix PSW Q bit behaviour to match hardware

2019-01-29 Thread Sven Schnelle
PA-RISC specification says: "Setting the PSW Q-bit, PSW{28}, to 1 with this instruction, if it was not already 1, is an undefined operation." However, at least HP-UX 10.20 sets the Q bit from 0 to 1 with the SSM instruction. Tested this both on HP9000/712 and HP9000/785/C3750, both machines set the