ffitarget.h (ffi_arg): Use unsigned long long for ILP32.

2015-02-10  Andrew Pinski  <apinski@cavium.com>

        * src/aarch64/ffitarget.h (ffi_arg): Use unsigned long long for ILP32.
        (FFI_SIZEOF_ARG): Define to 64 for ILP32.
        (ffi_sarg): Use signed long long for ILP32.

        * src/aarch64/sysv.S (PTR_REG): New macro.
        (PTR_SIZE): New macro.
        (ffi_closure_SYSV): Load cif, fn and user_data using PTR_REG.
        (ffi_go_closure_SYSV): Load cif and fn using PTR_REG.

From-SVN: r220598