[PATCH 3/8] MIPS: pbl: add pbl_probe_mem macro

[Oleksij Rempel]

Signed-off-by: Oleksij Rempel <linux at rempel-privat.de>
---
 arch/mips/include/asm/pbl_macros.h | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/arch/mips/include/asm/pbl_macros.h b/arch/mips/include/asm/pbl_macros.h
index cfca117..22d41b8 100644
--- a/arch/mips/include/asm/pbl_macros.h
+++ b/arch/mips/include/asm/pbl_macros.h
@@ -38,6 +38,18 @@
 	.set	pop
 	.endm
 
+	.macro	pbl_probe_mem ret1 ret2 addr
+	.set	push
+	.set	noreorder
+	la	\ret1, \addr
+	sw	zero, 0(\ret1)
+	li	\ret2, 0x12345678
+	sw	\ret2, 0(\ret1)
+	lw	\ret2, 0(\ret1)
+	li	\ret1, 0x12345678
+	.set	pop
+	.endm
+
 	/*
 	 * ADR macro instruction (inspired by ARM)
 	 *
-- 
1.8.1.2