sim: mips: workaround 32-bit addr sign extensions
authorMike Frysinger <vapier@gentoo.org>
Tue, 12 Jan 2016 06:39:47 +0000 (01:39 -0500)
committerMike Frysinger <vapier@gentoo.org>
Tue, 12 Jan 2016 06:42:22 +0000 (01:42 -0500)
commitb36d953bced0a4fecdde1823abac70ed7038ee95
treecb5a7b796702c263ad9310ed0a24b645c5ea87ad
parent4d625b70fc3fb7facc7159feb8d49b78ac6641f9
sim: mips: workaround 32-bit addr sign extensions

The mips bfd will sign extend 32-bit addresses into 64-bit values,
so if the entry happens to be 0x80000000 or higher, it is turned to
0xffffffff80000000 which points to memory that doesn't exist.

This wasn't an issue until commit 26f8bf63bf36f9062a5cc1afacf71462a
as all addresses were automatically truncated there in the translate
function to 32-bits.  When we cleaned up that code, the full 64-bits
were checked leading to many test failures for mips-sde-elf targets
and such.
sim/mips/ChangeLog
sim/mips/interp.c