Index: kernel/arch/arm32/src/exception.c
===================================================================
--- kernel/arch/arm32/src/exception.c	(revision 2d0c3a666e5f1f5195ff4c489e3e90fa9cf7e215)
+++ kernel/arch/arm32/src/exception.c	(revision 273b958872eafb2faf26c7da2b6179f641f689c2)
@@ -175,12 +175,17 @@
 void istate_decode(istate_t *istate)
 {
-	printf("r0 =%#0.8lx\tr1 =%#0.8lx\tr2 =%#0.8lx\tr3 =%#0.8lx\n",
+	printf("r0 =%#0" PRIx32 "\tr1 =%#0" PRIx32 "\t"
+	    "r2 =%#0" PRIx32 "\tr3 =%#0" PRIx32 "\n",
 	    istate->r0, istate->r1, istate->r2, istate->r3);
-	printf("r4 =%#0.8lx\tr5 =%#0.8lx\tr6 =%#0.8lx\tr7 =%#0.8lx\n",
+	printf("r4 =%#" PRIx32 "\tr5 =%#0" PRIx32 "\t"
+	    "r6 =%#0" PRIx32 "\tr7 =%#0" PRIx32 "\n",
 	    istate->r4, istate->r5, istate->r6, istate->r7);
-	printf("r8 =%#0.8lx\tr9 =%#0.8lx\tr10=%#0.8lx\tfp =%#0.8lx\n",
-	    istate->r8, istate->r9, istate->r10, istate->fp);
-	printf("r12=%#0.8lx\tsp =%#0.8lx\tlr =%#0.8lx\tspsr=%#0.8lx\n",
-	    istate->r12, istate->sp, istate->lr, istate->spsr);
+	printf("r8 =%#0" PRIx32 "\tr9 =%#0" PRIx32 "\t"
+	    "r10=%#0" PRIx32 "\tfp =%p\n",
+	    istate->r8, istate->r9, istate->r10,
+	    (void *) istate->fp);
+	printf("r12=%#0" PRIx32 "\tsp =%p\tlr =%p\tspsr=%p\n",
+	    istate->r12, (void *) istate->sp,
+	    (void *) istate->lr, (void *) istate->spsr);
 }
 
Index: kernel/arch/arm32/src/mm/page.c
===================================================================
--- kernel/arch/arm32/src/mm/page.c	(revision 2d0c3a666e5f1f5195ff4c489e3e90fa9cf7e215)
+++ kernel/arch/arm32/src/mm/page.c	(revision 273b958872eafb2faf26c7da2b6179f641f689c2)
@@ -93,5 +93,5 @@
 	    KA2PA(KERNEL_ADDRESS_SPACE_END_ARCH)) {
 		panic("Unable to map physical memory %p (%d bytes).",
-		    physaddr, size);
+		    (void *) physaddr, size);
 	}
 	
Index: kernel/arch/arm32/src/mm/page_fault.c
===================================================================
--- kernel/arch/arm32/src/mm/page_fault.c	(revision 2d0c3a666e5f1f5195ff4c489e3e90fa9cf7e215)
+++ kernel/arch/arm32/src/mm/page_fault.c	(revision 273b958872eafb2faf26c7da2b6179f641f689c2)
@@ -141,5 +141,6 @@
 	if (instr.condition == 0xf) {
 		panic("page_fault - instruction does not access memory "
-		    "(instr_code: %x, badvaddr:%x).", instr, badvaddr);
+		    "(instr_code: %#0" PRIx32 ", badvaddr:%p).",
+		    instr_union.pc, (void *) badvaddr);
 		return PF_ACCESS_EXEC;
 	}
@@ -160,5 +161,6 @@
 
 	panic("page_fault - instruction doesn't access memory "
-	    "(instr_code: %x, badvaddr:%x).", instr, badvaddr);
+	    "(instr_code: %#0" PRIx32 ", badvaddr:%p).",
+	    instr_union.pc, (void *) badvaddr);
 
 	return PF_ACCESS_EXEC;