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

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Add support for MULT1 and MULTU1 instructions.

Reviewed-by: Aleksandar Markovic <amarkovic@wavecomp.com>
Signed-off-by: Fredrik Noring <noring@nocrew.org>
Signed-off-by: Aleksandar Markovic <amarkovic@wavecomp.com>
This commit is contained in:
Fredrik Noring 2018-10-21 17:38:36 +02:00 committed by Aleksandar Markovic
parent 21e8e8b230
commit 06de726b2d
1 changed files with 14 additions and 3 deletions
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17
target/mips/translate.c
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@ -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 */