* the code where the exception occurred (since exception entry       \
         * doesn't turn off DE automatically).  We simulate the effect        \
         * of turning off DE on entry to an exception handler by turning      \
-        * off DE in the CSRR1 value and clearing the debug status.           \
+        * off DE in the DSRR1 value and clearing the debug status.           \
         */                                                                   \
        mfspr   r10,SPRN_DBSR;          /* check single-step/branch taken */  \
        andis.  r10,r10,DBSR_IC@h;                                            \
        RFDI;                                                                 \
        b       .;                                                            \
                                                                              \
-       /* continue normal handling for a critical exception... */            \
+       /* continue normal handling for a debug exception... */               \
 2:     mfspr   r4,SPRN_DBSR;                                                 \
        addi    r3,r1,STACK_FRAME_OVERHEAD;                                   \
        EXC_XFER_TEMPLATE(DebugException, 0x2008, (MSR_KERNEL & ~(MSR_ME|MSR_DE|MSR_CE)), NOCOPY, debug_transfer_to_handler, ret_from_debug_exc)