• Maciej W. Rozycki's avatar
    MIPS: ELF: Interpret the NAN2008 file header flag · 2b5e869e
    Maciej W. Rozycki authored
    Handle the EF_MIPS_NAN2008 ELF file header flag and refuse execution
    where there is no support in the FPU for the NaN encoding mode requested
    by a binary invoked.  Ensure that the setting of the bit in the binary
    matches one in any intepreter used.  Set the thread's initial FCSR
    contents according to the value of the EF_MIPS_NAN2008.
    
    Set the values of the FCSR ABS2008 and NAN2008 bits both to the same
    value if possible, to take the approach taken with existing FPU hardware
    into account.  As of now all implementations have both bits hardwired to
    the same value, that is both are fixed at 0 or both are fixed at 1, even
    though the architecture allows for implementations where the amount of
    control implemented with each of these two individual bits is
    independent of each other.
    Signed-off-by: default avatarMaciej W. Rozycki <macro@imgtec.com>
    Cc: Andrew Morton <akpm@linux-foundation.org>
    Cc: Matthew Fortune <Matthew.Fortune@imgtec.com>
    Cc: linux-mips@linux-mips.org
    Cc: linux-kernel@vger.kernel.org
    Patchwork: https://patchwork.linux-mips.org/patch/11479/Signed-off-by: default avatarRalf Baechle <ralf@linux-mips.org>
    2b5e869e
elf.h 13.5 KB