Author: jhibbits
Date: Fri Dec 16 04:38:53 2016
New Revision: 310146
URL: https://svnweb.freebsd.org/changeset/base/310146

Log:
  Use the right bitwise OR operation for clearing single-step at trap time.
  
  DBCR0_IDM || DBCRO_IC yields 1, which in this register is DBCR0_FT, not what 
we
  want.
  Reported by:  Mark Millard
  MFC after:    2 weeks

Modified:
  head/sys/powerpc/powerpc/trap.c

Modified: head/sys/powerpc/powerpc/trap.c
==============================================================================
--- head/sys/powerpc/powerpc/trap.c     Fri Dec 16 02:09:48 2016        
(r310145)
+++ head/sys/powerpc/powerpc/trap.c     Fri Dec 16 04:38:53 2016        
(r310146)
@@ -280,7 +280,7 @@ trap(struct trapframe *frame)
                case EXC_DEBUG: /* Single stepping */
                        mtspr(SPR_DBSR, mfspr(SPR_DBSR));
                        frame->srr1 &= ~PSL_DE;
-                       frame->cpu.booke.dbcr0 &= ~(DBCR0_IDM || DBCR0_IC);
+                       frame->cpu.booke.dbcr0 &= ~(DBCR0_IDM | DBCR0_IC);
                        sig = SIGTRAP;
                        ucode = TRAP_TRACE;
                        break;
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