Change Details

Similar to d95fbf4e1a12565908b04b442263fe60c9e890b4, always save %gp in the trapframe even though it is only restored when returning to user mode. This is mostly a debugging aid so that dump_regs() doesn't print out random stack garbage as the value of %gp for kernel faults (e.g. sysctl debug.kdb.trap=1) as well as keeping kgdb's trapframe unwinder from reporting bogus values of $gp for lower frames. Sponsored by: DARPA

Similar to d95fbf4e1a12565908b04b442263fe60c9e890b4, always save gp in the trapframe even though it is only restored when returning to user mode. This is mostly a debugging aid so that dump_regs() doesn't print out random stack garbage as the value of gp for kernel faults (e.g. sysctl debug.kdb.trap=1) as well as keeping kgdb's trapframe unwinder from reporting bogus values of $gp for lower frames. Sponsored by: DARPA

Similar to d95fbf4e1a12565908b04b442263fe60c9e890b4, always save %gpgp in in the trapframe even though it is only restored when returning to user user mode. This is mostly a debugging aid so that dump_regs() doesn't print out random stack garbage as the value of %gp for kernel faults (e.g. sysctl debug.kdb.trap=1) as well as keeping kgdb's trapframe unwinder from reporting bogus values of $gp for lower frames. Sponsored by: DARPA