CVS Update@oss.sgi.com: linux

[Kanoj Sarcar <kanoj@oss.sgi.com>]

CVSROOT:        /home/pub/cvs
Module name:    linux
Changes by:     kanoj@oss.sgi.com       00/04/25 09:04:51

Modified files:
        include/asm-mips64: current.h stackframe.h 
        arch/mips64/kernel: head.S r4k_switch.S 

Log message:
        We use the ST0_CU0 bit to determine whether we are coming into
        kernel mode for the first time from user mode (on intr/exception/
        syscall etc). If so, we need to set the sp to point to the kernel
        stack. On UP kernels, the kernel stack pointer is stored in
        the global variable "kernelsp". For SMP kernel, the physical
        address of the current task structure is stuffed into the
        watchlo/watchhi registers, so on first entry into the kernel,
        we need to munge this value properly to setup the sp register.