• David Daney's avatar
    MIPS: Preliminary VDSO · c52d0d30
    David Daney authored
    This is a preliminary patch to add a vdso to all user processes.  Still
    missing are ELF headers and .eh_frame information.  But it is enough to
    allow us to move signal trampolines off of the stack.  Note that emulation
    of branch delay slots in the FPU emulator still requires the stack.
    
    We allocate a single page (the vdso) and write all possible signal
    trampolines into it.  The stack is moved down by one page and the vdso is
    mapped into this space.
    Signed-off-by: default avatarDavid Daney <ddaney@caviumnetworks.com>
    To: linux-mips@linux-mips.org
    Patchwork: http://patchwork.linux-mips.org/patch/975/Signed-off-by: default avatarRalf Baechle <ralf@linux-mips.org>
    c52d0d30
syscall.c 9.56 KB