powerpc: Use CURRENT_THREAD_INFO instead of open coded assembly

Signed-off-by: Stuart Yoder <stuart.yoder@freescale.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
diff --git a/arch/powerpc/kernel/entry_32.S b/arch/powerpc/kernel/entry_32.S
index ba3aeb4..bad42e3 100644
--- a/arch/powerpc/kernel/entry_32.S
+++ b/arch/powerpc/kernel/entry_32.S
@@ -92,7 +92,7 @@
 	mfspr	r8,SPRN_SPRG_THREAD
 	lwz	r0,KSP_LIMIT(r8)
 	stw	r0,SAVED_KSP_LIMIT(r11)
-	rlwimi	r0,r1,0,0,(31-THREAD_SHIFT)
+	CURRENT_THREAD_INFO(r0, r1)
 	stw	r0,KSP_LIMIT(r8)
 	/* fall through */
 #endif
@@ -112,7 +112,7 @@
 	mfspr	r8,SPRN_SPRG_THREAD
 	lwz	r0,KSP_LIMIT(r8)
 	stw	r0,saved_ksp_limit@l(0)
-	rlwimi	r0,r1,0,0,(31-THREAD_SHIFT)
+	CURRENT_THREAD_INFO(r0, r1)
 	stw	r0,KSP_LIMIT(r8)
 	/* fall through */
 #endif
@@ -158,7 +158,7 @@
 	tophys(r11,r11)
 	addi	r11,r11,global_dbcr0@l
 #ifdef CONFIG_SMP
-	rlwinm	r9,r1,0,0,(31-THREAD_SHIFT)
+	CURRENT_THREAD_INFO(r9, r1)
 	lwz	r9,TI_CPU(r9)
 	slwi	r9,r9,3
 	add	r11,r11,r9
@@ -179,7 +179,7 @@
 	ble-	stack_ovf		/* then the kernel stack overflowed */
 5:
 #if defined(CONFIG_6xx) || defined(CONFIG_E500)
-	rlwinm	r9,r1,0,0,31-THREAD_SHIFT
+	CURRENT_THREAD_INFO(r9, r1)
 	tophys(r9,r9)			/* check local flags */
 	lwz	r12,TI_LOCAL_FLAGS(r9)
 	mtcrf	0x01,r12
@@ -333,7 +333,7 @@
 	mtmsr	r11
 1:
 #endif /* CONFIG_TRACE_IRQFLAGS */
-	rlwinm	r10,r1,0,0,(31-THREAD_SHIFT)	/* current_thread_info() */
+	CURRENT_THREAD_INFO(r10, r1)
 	lwz	r11,TI_FLAGS(r10)
 	andi.	r11,r11,_TIF_SYSCALL_T_OR_A
 	bne-	syscall_dotrace
@@ -354,7 +354,7 @@
 	bl	do_show_syscall_exit
 #endif
 	mr	r6,r3
-	rlwinm	r12,r1,0,0,(31-THREAD_SHIFT)	/* current_thread_info() */
+	CURRENT_THREAD_INFO(r12, r1)
 	/* disable interrupts so current_thread_info()->flags can't change */
 	LOAD_MSR_KERNEL(r10,MSR_KERNEL)	/* doesn't include MSR_EE */
 	/* Note: We don't bother telling lockdep about it */
@@ -815,7 +815,7 @@
 
 user_exc_return:		/* r10 contains MSR_KERNEL here */
 	/* Check current_thread_info()->flags */
-	rlwinm	r9,r1,0,0,(31-THREAD_SHIFT)
+	CURRENT_THREAD_INFO(r9, r1)
 	lwz	r9,TI_FLAGS(r9)
 	andi.	r0,r9,_TIF_USER_WORK_MASK
 	bne	do_work
@@ -835,7 +835,7 @@
 /* N.B. the only way to get here is from the beq following ret_from_except. */
 resume_kernel:
 	/* check current_thread_info->preempt_count */
-	rlwinm	r9,r1,0,0,(31-THREAD_SHIFT)
+	CURRENT_THREAD_INFO(r9, r1)
 	lwz	r0,TI_PREEMPT(r9)
 	cmpwi	0,r0,0		/* if non-zero, just restore regs and return */
 	bne	restore
@@ -852,7 +852,7 @@
 	bl	trace_hardirqs_off
 #endif
 1:	bl	preempt_schedule_irq
-	rlwinm	r9,r1,0,0,(31-THREAD_SHIFT)
+	CURRENT_THREAD_INFO(r9, r1)
 	lwz	r3,TI_FLAGS(r9)
 	andi.	r0,r3,_TIF_NEED_RESCHED
 	bne-	1b
@@ -1122,7 +1122,7 @@
 	lwz	r10,SAVED_KSP_LIMIT(r1)
 	stw	r10,KSP_LIMIT(r9)
 	lwz	r9,THREAD_INFO-THREAD(r9)
-	rlwinm	r10,r1,0,0,(31-THREAD_SHIFT)
+	CURRENT_THREAD_INFO(r10, r1)
 	lwz	r10,TI_PREEMPT(r10)
 	stw	r10,TI_PREEMPT(r9)
 	RESTORE_xSRR(SRR0,SRR1);
@@ -1156,7 +1156,7 @@
 	lis	r11,global_dbcr0@ha
 	addi	r11,r11,global_dbcr0@l
 #ifdef CONFIG_SMP
-	rlwinm	r9,r1,0,0,(31-THREAD_SHIFT)
+	CURRENT_THREAD_INFO(r9, r1)
 	lwz	r9,TI_CPU(r9)
 	slwi	r9,r9,3
 	add	r11,r11,r9
@@ -1197,7 +1197,7 @@
 	LOAD_MSR_KERNEL(r10,MSR_KERNEL)
 	SYNC
 	MTMSRD(r10)		/* disable interrupts */
-	rlwinm	r9,r1,0,0,(31-THREAD_SHIFT)
+	CURRENT_THREAD_INFO(r9, r1)
 	lwz	r9,TI_FLAGS(r9)
 	andi.	r0,r9,_TIF_NEED_RESCHED
 	bne-	do_resched