Add the R6 MUL instruction encoding for 3 operand signed multiply to
uasm so that KVM can use uasm for generating its entry point code at
runtime on R6.
Signed-off-by: James Hogan <james.hogan@xxxxxxxxxx>
Cc: Ralf Baechle <ralf@xxxxxxxxxxxxxx>
Cc: linux-mips@xxxxxxxxxxxxxx
---
arch/mips/include/uapi/asm/inst.h | 44 +++++++++++++++++++++++++++++++++++++++
arch/mips/mm/uasm-mips.c | 4 ++++
2 files changed, 48 insertions(+)
diff --git a/arch/mips/include/uapi/asm/inst.h b/arch/mips/include/uapi/asm/inst.h
index 6319c5037e66..fc96012c75d1 100644
--- a/arch/mips/include/uapi/asm/inst.h
+++ b/arch/mips/include/uapi/asm/inst.h
@@ -93,6 +93,50 @@ enum spec3_op {
};
/*
+ * Bits 10-6 minor opcode for r6 spec mult/div encodings
+ */
+enum mult_op {
+ mult_mult_op = 0x0,
+ mult_mul_op = 0x2,
+ mult_muh_op = 0x3,
+};
+enum multu_op {
+ multu_multu_op = 0x0,
+ multu_mulu_op = 0x2,
+ multu_muhu_op = 0x3,
+};
+enum div_op {
+ div_div_op = 0x0,
+ div_div6_op = 0x2,
+ div_mod_op = 0x3,
+};
+enum divu_op {
+ divu_divu_op = 0x0,
+ divu_divu6_op = 0x2,
+ divu_modu_op = 0x3,
+};
+enum dmult_op {
+ dmult_dmult_op = 0x0,
+ dmult_dmul_op = 0x2,
+ dmult_dmuh_op = 0x3,
+};
+enum dmultu_op {
+ dmultu_dmultu_op = 0x0,
+ dmultu_dmulu_op = 0x2,
+ dmultu_dmuhu_op = 0x3,
+};
+enum ddiv_op {
+ ddiv_ddiv_op = 0x0,
+ ddiv_ddiv6_op = 0x2,
+ ddiv_dmod_op = 0x3,
+};
+enum ddivu_op {
+ ddivu_ddivu_op = 0x0,
+ ddivu_ddivu6_op = 0x2,
+ ddivu_dmodu_op = 0x3,
+};
+
+/*
* rt field of bcond opcodes.
*/
enum rt_op {
diff --git a/arch/mips/mm/uasm-mips.c b/arch/mips/mm/uasm-mips.c
index 86a3c76a1ad8..cec524167822 100644
--- a/arch/mips/mm/uasm-mips.c
+++ b/arch/mips/mm/uasm-mips.c
@@ -121,7 +121,11 @@ static struct insn insn_table[] = {
{ insn_mthc0, M(cop0_op, mthc0_op, 0, 0, 0, 0), RT | RD | SET},
{ insn_mthi, M(spec_op, 0, 0, 0, 0, mthi_op), RS },
{ insn_mtlo, M(spec_op, 0, 0, 0, 0, mtlo_op), RS },
+#ifndef CONFIG_CPU_MIPSR6
{ insn_mul, M(spec2_op, 0, 0, 0, 0, mul_op), RS | RT | RD},
+#else
+ { insn_mul, M(spec_op, 0, 0, 0, mult_mul_op, mult_op), RS | RT | RD},
+#endif
{ 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 },
#ifndef CONFIG_CPU_MIPSR6
--
2.4.10
