[LA64_DYNAREC] Added host_call to arch state

[ksco]

This fixed box64-bash's unstablility on LoongArch.

[ptitSeb]

LGTM now. I suppose ARM64 doesn't needs that for now, as RSP is not clobbered during native call. But RV64 (and PPC64LE) might need something similar at some point.

[xiangzhai]

Hi,

But RV64 (and PPC64LE) might need something similar at some point.

RV64 might doesn't need. Because RV64 RSP mapping to x9 (s1), Saved register, not Function argument.
There is uintptr_t xSPSave in the x64emu_t for RV64 and PPC64LE. But LA64 xSavedSP mapping to $r22 ($fp), otherwise RSP mapped to $r22 instead.
But LA64 mapping to $r11 (a7), Function argument.
Do I need to refactor the la64 mapping?

Thanks,
Leslie Zhai

[ksco]

It's not just RSP.