tree e79d7c6182dba9c30b2af7bddb86f6a4fcde295b
parent 30f218dfaeadd4c39d4b0524a9c4300c5cbf7452
author Martin Storsjo <martin@martin.st> 1548752432 +0000
committer Martin Storsjo <martin@martin.st> 1548752432 +0000

Don't define unw_fpreg_t to uint64_t for __ARM_DWARF_EH__

The existing typedef of unw_fpreg_t to uint64_t might work and be
correct for the ARM_EHABI case, but for dwarf, some cases in e.g.
DwarfInstructions.hpp convert between double and unw_fpreg_t.

When converting implicitly between double and unw_fpreg_t (uint64_t),
the values get interpreted as integers and converted to float and vice
versa, while the correct thing would be to keep the same bit pattern.

Avoid the whole issue by using the same definition of unw_fpreg_t
as all other architectures, when using dwarf unwinding on ARM.

Change assembler functions to take a void pointer instead of
unw_fpreg_t pointer, to avoid having a different mangled symbol name
depending on the actual value of this typedef.

Differential Revision: https://reviews.llvm.org/D57001

git-svn-id: https://llvm.org/svn/llvm-project/libunwind/trunk@352461 91177308-0d34-0410-b5e6-96231b3b80d8