Index: sys/mips/mips/trap.c
===================================================================
--- sys/mips/mips/trap.c
+++ sys/mips/mips/trap.c
@@ -109,27 +109,27 @@
 
 #define	lb_macro(data, addr)						\
 	__asm __volatile ("lb %0, 0x0(%1)"				\
-			: "=r" (data)	/* outputs */			\
+			: "+r" (data)	/* outputs */			\
 			: "r" (addr));	/* inputs */
 
 #define	lwl_macro(data, addr)						\
 	__asm __volatile ("lwl %0, 0x0(%1)"				\
-			: "=r" (data)	/* outputs */			\
+			: "+r" (data)	/* outputs */			\
 			: "r" (addr));	/* inputs */
 
 #define	lwr_macro(data, addr)						\
 	__asm __volatile ("lwr %0, 0x0(%1)"				\
-			: "=r" (data)	/* outputs */			\
+			: "+r" (data)	/* outputs */			\
 			: "r" (addr));	/* inputs */
 
 #define	ldl_macro(data, addr)						\
 	__asm __volatile ("ldl %0, 0x0(%1)"				\
-			: "=r" (data)	/* outputs */			\
+			: "+r" (data)	/* outputs */			\
 			: "r" (addr));	/* inputs */
 
 #define	ldr_macro(data, addr)						\
 	__asm __volatile ("ldr %0, 0x0(%1)"				\
-			: "=r" (data)	/* outputs */			\
+			: "+r" (data)	/* outputs */			\
 			: "r" (addr));	/* inputs */
 
 #define	sb_macro(data, addr)						\
@@ -1528,7 +1528,7 @@
 {
 	register_t *reg = (register_t *) frame;
 	u_int32_t inst = *((u_int32_t *)(intptr_t)pc);
-	register_t value_msb, value;
+	register_t value_msb = 0, value = 0;
 	unsigned size;
 
 	/*