MIPS: uasm: Add mfhi uasm instruction

It will be used later on by bpf-jit

[ralf@linux-mips.org: Resolved conflict.]
Signed-off-by: Markos Chandras <markos.chandras@imgtec.com>
Cc: linux-mips@linux-mips.org
Cc: Markos Chandras <markos.chandras@imgtec.com>
Patchwork: http://patchwork.linux-mips.org/patch/6728/Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

arch/mips/include/asm/uasm.h

@@ -131,6 +131,7 @@ Ip_u1s2(_lui);
 Ip_u2s3u1(_lw);
 Ip_u3u1u2(_lwx);
 Ip_u1u2u3(_mfc0);
+Ip_u1(_mfhi);
 Ip_u1u2u3(_mtc0);
 Ip_u3u1u2(_or);
 Ip_u2u1u3(_ori);

arch/mips/include/uapi/asm/inst.h

@@ -300,6 +300,7 @@ enum mm_32axf_minor_op {
 	mm_mfc0_op = 0x003,
 	mm_mtc0_op = 0x00b,
 	mm_tlbp_op = 0x00d,
+	mm_mfhi32_op = 0x035,
 	mm_jalr_op = 0x03c,
 	mm_tlbr_op = 0x04d,
 	mm_jalrhb_op = 0x07c,

arch/mips/mm/uasm-micromips.c

@@ -86,6 +86,7 @@ static struct insn insn_table_MM[] = {
 	{ insn_lui, M(mm_pool32i_op, mm_lui_op, 0, 0, 0, 0), RS | SIMM },
 	{ insn_lw, M(mm_lw32_op, 0, 0, 0, 0, 0), RT | RS | SIMM },
 	{ insn_mfc0, M(mm_pool32a_op, 0, 0, 0, mm_mfc0_op, mm_pool32axf_op), RT | RS | RD },
+	{ insn_mfhi, M(mm_pool32a_op, 0, 0, 0, mm_mfhi32_op, mm_pool32axf_op), RS },
 	{ insn_mtc0, M(mm_pool32a_op, 0, 0, 0, mm_mtc0_op, mm_pool32axf_op), RT | RS | RD },
 	{ insn_or, M(mm_pool32a_op, 0, 0, 0, 0, mm_or32_op), RT | RS | RD },
 	{ insn_ori, M(mm_ori32_op, 0, 0, 0, 0, 0), RT | RS | UIMM },

arch/mips/mm/uasm-mips.c

@@ -94,6 +94,7 @@ static struct insn insn_table[] = {
 	{ insn_lw,  M(lw_op, 0, 0, 0, 0, 0),  RS | RT | SIMM },
 	{ insn_lwx, M(spec3_op, 0, 0, 0, lwx_op, lx_op), RS | RT | RD },
 	{ insn_mfc0,  M(cop0_op, mfc_op, 0, 0, 0, 0),  RT | RD | SET},
+	{ insn_mfhi,  M(spec_op, 0, 0, 0, 0, mfhi_op), RD },
 	{ insn_mtc0,  M(cop0_op, mtc_op, 0, 0, 0, 0),  RT | RD | SET},
 	{ insn_ori,  M(ori_op, 0, 0, 0, 0, 0),	RS | RT | UIMM },
 	{ insn_or,  M(spec_op, 0, 0, 0, 0, or_op),  RS | RT | RD },

arch/mips/mm/uasm.c

@@ -51,10 +51,11 @@ enum opcode {
 	insn_dsll32, insn_dsra, insn_dsrl, insn_dsrl32, insn_dsubu, insn_eret,
 	insn_ext, insn_ins, insn_j, insn_jal, insn_jalr, insn_jr, insn_ld,
 	insn_ldx, insn_ll, insn_lld, insn_lui, insn_lw, insn_lwx, insn_mfc0,
-	insn_mtc0, insn_or, insn_ori, insn_pref, insn_rfe, insn_rotr, insn_sc,
-	insn_scd, insn_sd, insn_sll, insn_sllv, insn_sra, insn_srl, insn_srlv,
-	insn_subu, insn_sw, insn_sync, insn_syscall, insn_tlbp, insn_tlbr,
-	insn_tlbwi, insn_tlbwr, insn_wait, insn_xor, insn_xori, insn_yield,
+	insn_mfhi, insn_mtc0, insn_or, insn_ori, insn_pref, insn_rfe,
+	insn_rotr, insn_sc, insn_scd, insn_sd, insn_sll, insn_sllv, insn_sra,
+	insn_srl, insn_srlv, insn_subu, insn_sw, insn_sync, insn_syscall,
+	insn_tlbp, insn_tlbr, insn_tlbwi, insn_tlbwr, insn_wait, insn_xor,
+	insn_xori, insn_yield,
 };
 
 struct insn {
@@ -273,6 +274,7 @@ I_u2s3u1(_lld)
 I_u1s2(_lui)
 I_u2s3u1(_lw)
 I_u1u2u3(_mfc0)
+I_u1(_mfhi)
 I_u1u2u3(_mtc0)
 I_u2u1u3(_ori)
 I_u3u1u2(_or)