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graphic: 0.796
mistranslation: 0.760
other: 0.718
instruction: 0.703
device: 0.684
network: 0.647
vnc: 0.645
socket: 0.632
semantic: 0.629
boot: 0.552
assembly: 0.357
KVM: 0.253
qemu-system-nios2 not working on s390x (big endian) hosts
Description of problem:
qemu-system-nios2 fails to boot a Linux kernel on s390x hosts.
Steps to reproduce:
1. wget https://qemu-advcal.gitlab.io/qac-best-of-multiarch/download/day14.tar.xz
2. tar -xJf day14.tar.xz
3. cd day14/
4. qemu-system-nios2 -nographic -kernel vmlinux.elf
Additional information:
When running with "-d in_asm", it seems like the code initially starts executing ok, but in one of the early translation blocks, there is a difference when comparing the log with a run from a x86 host:
```
IN: fdt_check_header
0xc81afd48: ldw r3,0(r4)
0xc81afd4c: srli r5,r3,24
0xc81afd50: slli r2,r3,24
0xc81afd54: or r2,r2,r5
0xc81afd58: slli r5,r3,8
0xc81afd5c: srli r3,r3,8
0xc81afd60: andhi r5,r5,255
0xc81afd64: andi r3,r3,65280
0xc81afd68: or r2,r2,r5
0xc81afd6c: or r2,r2,r3
0xc81afd70: movhi r3,53262
0xc81afd74: addi r3,r3,-275
0xc81afd78: bne r2,r3,0xc81afde8
```
On the x86 host, the branch at the end is not taken, while on the s390x host, the branch is taken.
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