llvm-project

Commit Graph

Author	SHA1	Message	Date
Tim Northover	3495647d0d	ARM: by default don't set the Thumb bit on MachO relocated values. Its existence is largely historical, apparently we tried to make ARM object files look maybe-almost-possibly runnable by putting our best guess at the actual value into relocated locations. Of course, the real linker then comes along and can completely change things. But it should only be there for word-sized and movw/movt relocations. It can't be encoded in branch relocations, and I've seen it mess up validity calculations twice in the last couple of weeks so the default is clearly problematic. llvm-svn: 279773	2016-08-25 20:41:30 +00:00
Tim Northover	56048d5c2c	ARM: report an error when attempting to target a misalgined BLX The CodeGen problem was fixed in r269101, but we still miscompiled assembly that tried the same thing. llvm-svn: 269126	2016-05-10 21:48:48 +00:00

Author

SHA1

Message

Date

Tim Northover

3495647d0d

ARM: by default don't set the Thumb bit on MachO relocated values.

Its existence is largely historical, apparently we tried to make ARM object
files look maybe-almost-possibly runnable by putting our best guess at the
actual value into relocated locations. Of course, the real linker then comes
along and can completely change things.

But it should only be there for word-sized and movw/movt relocations. It can't
be encoded in branch relocations, and I've seen it mess up validity
calculations twice in the last couple of weeks so the default is clearly problematic.

llvm-svn: 279773

2016-08-25 20:41:30 +00:00

Tim Northover

56048d5c2c

ARM: report an error when attempting to target a misalgined BLX

The CodeGen problem was fixed in r269101, but we still miscompiled assembly
that tried the same thing.

llvm-svn: 269126

2016-05-10 21:48:48 +00:00

2 Commits