From: Craig Janeczek <jancr...@amazon.com> Add emulation of non-MXU MULL within MXU decoding engine.
Signed-off-by: Craig Janeczek <jancr...@amazon.com> Signed-off-by: Aleksandar Markovic <amarko...@wavecomp.com> --- target/mips/translate.c | 14 +++++++++++++- 1 file changed, 13 insertions(+), 1 deletion(-) diff --git a/target/mips/translate.c b/target/mips/translate.c index 5b7e6f3..191aeab 100644 --- a/target/mips/translate.c +++ b/target/mips/translate.c @@ -1654,7 +1654,7 @@ enum { enum { OPC_MXU_S32MADD = 0x00, OPC_MXU_S32MADDU = 0x01, - /* not assigned 0x02 */ + OPC__MXU_MUL = 0x02, OPC_MXU__POOL00 = 0x03, OPC_MXU_S32MSUB = 0x04, OPC_MXU_S32MSUBU = 0x05, @@ -24276,6 +24276,18 @@ static void decode_opc_mxu(CPUMIPSState *env, DisasContext *ctx) MIPS_INVAL("OPC_MXU_S32MADDU"); generate_exception_end(ctx, EXCP_RI); break; + case OPC__MXU_MUL: /* 0x2 - unused in MXU specs */ + { + uint32_t rs, rt, rd, op1; + + rs = extract32(ctx->opcode, 21, 5); + rt = extract32(ctx->opcode, 16, 5); + rd = extract32(ctx->opcode, 11, 5); + op1 = MASK_SPECIAL2(ctx->opcode); + + gen_arith(ctx, op1, rd, rs, rt); + } + break; case OPC_MXU__POOL00: decode_opc_mxu__pool00(env, ctx); break; -- 2.7.4