From d674dd14e85c49ca0e422de53a4c2b5bf44a339a Mon Sep 17 00:00:00 2001
From: Paul Burton <paul.burton@imgtec.com>
Date: Tue, 4 Mar 2014 15:12:36 +0000
Subject: [PATCH] MIPS: uasm: add MT ASE yield instruction

This patch allows use of the MT ASE yield instruction from uasm. It will
be used by a subsequent patch.

Signed-off-by: Paul Burton <paul.burton@imgtec.com>
---
 arch/mips/include/asm/uasm.h |  1 +
 arch/mips/mm/uasm-mips.c     |  1 +
 arch/mips/mm/uasm.c          | 10 +++++++++-
 3 files changed, 11 insertions(+), 1 deletion(-)

diff --git a/arch/mips/include/asm/uasm.h b/arch/mips/include/asm/uasm.h
index 88108019d922..3d803877ad8f 100644
--- a/arch/mips/include/asm/uasm.h
+++ b/arch/mips/include/asm/uasm.h
@@ -150,6 +150,7 @@ Ip_0(_tlbwr);
 Ip_u1(_wait);
 Ip_u3u1u2(_xor);
 Ip_u2u1u3(_xori);
+Ip_u2u1(_yield);
 
 
 /* Handle labels. */
diff --git a/arch/mips/mm/uasm-mips.c b/arch/mips/mm/uasm-mips.c
index c69f785753b5..4a2fc82fcd4f 100644
--- a/arch/mips/mm/uasm-mips.c
+++ b/arch/mips/mm/uasm-mips.c
@@ -116,6 +116,7 @@ static struct insn insn_table[] = {
 	{ insn_wait, M(cop0_op, cop_op, 0, 0, 0, wait_op), SCIMM },
 	{ insn_xori,  M(xori_op, 0, 0, 0, 0, 0),  RS | RT | UIMM },
 	{ insn_xor,  M(spec_op, 0, 0, 0, 0, xor_op),  RS | RT | RD },
+	{ insn_yield, M(spec3_op, 0, 0, 0, 0, yield_op), RS | RD },
 	{ insn_invalid, 0, 0 }
 };
 
diff --git a/arch/mips/mm/uasm.c b/arch/mips/mm/uasm.c
index 46d2173e6f24..55a1fdfb76ef 100644
--- a/arch/mips/mm/uasm.c
+++ b/arch/mips/mm/uasm.c
@@ -54,7 +54,7 @@ enum opcode {
 	insn_mtc0, insn_or, insn_ori, insn_pref, insn_rfe, insn_rotr, insn_sc,
 	insn_scd, insn_sd, insn_sll, insn_sra, insn_srl, insn_subu, insn_sw,
 	insn_sync, insn_syscall, insn_tlbp, insn_tlbr, insn_tlbwi, insn_tlbwr,
-	insn_wait, insn_xor, insn_xori,
+	insn_wait, insn_xor, insn_xori, insn_yield,
 };
 
 struct insn {
@@ -200,6 +200,13 @@ Ip_u1u2(op)						\
 }							\
 UASM_EXPORT_SYMBOL(uasm_i##op);
 
+#define I_u2u1(op)					\
+Ip_u1u2(op)						\
+{							\
+	build_insn(buf, insn##op, b, a);		\
+}							\
+UASM_EXPORT_SYMBOL(uasm_i##op);
+
 #define I_u1s2(op)					\
 Ip_u1s2(op)						\
 {							\
@@ -279,6 +286,7 @@ I_0(_tlbwr)
 I_u1(_wait);
 I_u3u1u2(_xor)
 I_u2u1u3(_xori)
+I_u2u1(_yield)
 I_u2u1msbu3(_dins);
 I_u2u1msb32u3(_dinsm);
 I_u1(_syscall);