Commit 06de726b authored by Fredrik Noring's avatar Fredrik Noring Committed by Aleksandar Markovic
Browse files

target/mips: Support R5900 three-operand MULT1 and MULTU1 instructions 



Add support for MULT1 and MULTU1 instructions.

Reviewed-by: default avatarAleksandar Markovic <amarkovic@wavecomp.com>
Signed-off-by: default avatarFredrik Noring <noring@nocrew.org>
Signed-off-by: default avatarAleksandar Markovic <amarkovic@wavecomp.com>
parent 21e8e8b2

target/mips/translate.c

+14 −3
Original line number Diff line number Diff line
@@ -4771,7 +4771,7 @@ static void gen_muldiv(DisasContext *ctx, uint32_t opc, 
 * Toshiba/Sony R5900 and the Toshiba TX19, TX39 and TX79 core

 * architectures are special three-operand variants with the syntax

 *

 *     MULT[U] rd, rs, rt

 *     MULT[U][1] rd, rs, rt

 *

 * such that

 *
@@ -4795,6 +4795,9 @@ static void gen_mul_txx9(DisasContext *ctx, uint32_t opc, 
    gen_load_gpr(t1, rt);









    switch (opc) {









    case TX79_MMI_MULT1:









        acc = 1;









        /* Fall through */









    case OPC_MULT:









        {









            TCGv_i32 t2 = tcg_temp_new_i32();








@@ -4811,6 +4814,9 @@ static void gen_mul_txx9(DisasContext *ctx, uint32_t opc,







            tcg_temp_free_i32(t3);









        }









        break;









    case TX79_MMI_MULTU1:









        acc = 1;









        /* Fall through */









    case OPC_MULTU:









        {









            TCGv_i32 t2 = tcg_temp_new_i32();








@@ -24631,6 +24637,9 @@ static void decode_tx79_mmi3(CPUMIPSState *env, DisasContext *ctx)







static void decode_tx79_mmi(CPUMIPSState *env, DisasContext *ctx)









{









    uint32_t opc = MASK_TX79_MMI(ctx->opcode);









    int rs = extract32(ctx->opcode, 21, 5);









    int rt = extract32(ctx->opcode, 16, 5);









    int rd = extract32(ctx->opcode, 11, 5);

















    switch (opc) {









    case TX79_MMI_CLASS_MMI0:








@@ -24645,6 +24654,10 @@ static void decode_tx79_mmi(CPUMIPSState *env, DisasContext *ctx)







    case TX79_MMI_CLASS_MMI3:









        decode_tx79_mmi3(env, ctx);









        break;









    case TX79_MMI_MULT1:









    case TX79_MMI_MULTU1:









        gen_mul_txx9(ctx, opc, rd, rs, rt);









        break;









    case TX79_MMI_MADD:          /* TODO: TX79_MMI_MADD */









    case TX79_MMI_MADDU:         /* TODO: TX79_MMI_MADDU */









    case TX79_MMI_PLZCW:         /* TODO: TX79_MMI_PLZCW */








@@ -24652,8 +24665,6 @@ static void decode_tx79_mmi(CPUMIPSState *env, DisasContext *ctx)







    case TX79_MMI_MTHI1:         /* TODO: TX79_MMI_MTHI1 */









    case TX79_MMI_MFLO1:         /* TODO: TX79_MMI_MFLO1 */









    case TX79_MMI_MTLO1:         /* TODO: TX79_MMI_MTLO1 */









    case TX79_MMI_MULT1:         /* TODO: TX79_MMI_MULT1 */









    case TX79_MMI_MULTU1:        /* TODO: TX79_MMI_MULTU1 */









    case TX79_MMI_DIV1:          /* TODO: TX79_MMI_DIV1 */









    case TX79_MMI_DIVU1:         /* TODO: TX79_MMI_DIVU1 */









    case TX79_MMI_MADD1:         /* TODO: TX79_MMI_MADD1 */