[Qemu-devel] [PATCH] Fix Sparc32/64 branch distance calculation, GCC and GDB works!

[Blue Swirl]

I found out why cc1 and also GDB had a segfault after I fixed the user 
emulator. Branch distances over 1MB were not calculated correctly, shift 
operation was done before sign extension. That made the 1MB branches 
negative, and probably corrupted 2MB branches.

Now I can compile some programs either using the user emulator or inside the 
system emulator, debugging with GDB works as well! If only Qemu worked on 
Sparc32, we could try if Qemu can be used to compile itself.

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