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target/mips: MXU: Add missing opcodes/decoding for LX* instructions 

Add missing opcodes and decoding engine for LXB, LXH, LXW, LXBU,
and LXHU instructions. They were for some reason forgotten in
previous commits. The MXU opcode list and decoding engine should
be now complete.

Reviewed-by: Stefan Markovic <smarkovic@wavecomp.com>
Signed-off-by: Aleksandar Markovic <amarkovic@wavecomp.com>
This commit is contained in:
Aleksandar Markovic 2018-12-27 17:17:35 +01:00
parent c5b00c1684
commit c233bf07af
1 changed files with 103 additions and 39 deletions
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142
target/mips/translate.c
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@ -1663,12 +1663,21 @@ enum {
* │ 20..18
* ├─ 100111 ─ OPC_MXU__POOL16 ─┬─ 000 ─ OPC_MXU_D32SARW
* │ ├─ 001 ─ OPC_MXU_S32ALN
* ├─ 101000 ─ OPC_MXU_LXB ├─ 010 ─ OPC_MXU_S32ALNI
* ├─ 101001 ─ <not assigned> ├─ 011 ─ OPC_MXU_S32NOR
* ├─ 101010 ─ OPC_MXU_S16LDD ├─ 100 ─ OPC_MXU_S32AND
* ├─ 101011 ─ OPC_MXU_S16STD ├─ 101 ─ OPC_MXU_S32OR
* ├─ 101100 ─ OPC_MXU_S16LDI ├─ 110 ─ OPC_MXU_S32XOR
* ├─ 101101 ─ OPC_MXU_S16SDI └─ 111 ─ OPC_MXU_S32LUI
* │ ├─ 010 ─ OPC_MXU_S32ALNI
* │ ├─ 011 ─ OPC_MXU_S32NOR
* │ ├─ 100 ─ OPC_MXU_S32AND
* │ ├─ 101 ─ OPC_MXU_S32OR
* │ ├─ 110 ─ OPC_MXU_S32XOR
* │ └─ 111 ─ OPC_MXU_S32LUI
* │
* │ 7..5
* ├─ 101000 ─ OPC_MXU__POOL17 ─┬─ 000 ─ OPC_MXU_LXB
* │ ├─ 001 ─ OPC_MXU_LXH
* ├─ 101001 ─ <not assigned> ├─ 011 ─ OPC_MXU_LXW
* ├─ 101010 ─ OPC_MXU_S16LDD ├─ 100 ─ OPC_MXU_LXBU
* ├─ 101011 ─ OPC_MXU_S16STD └─ 101 ─ OPC_MXU_LXHU
* ├─ 101100 ─ OPC_MXU_S16LDI
* ├─ 101101 ─ OPC_MXU_S16SDI
* ├─ 101110 ─ OPC_MXU_S32M2I
* ├─ 101111 ─ OPC_MXU_S32I2M
* ├─ 110000 ─ OPC_MXU_D32SLL
@ -1678,15 +1687,15 @@ enum {
* ├─ 110100 ─ OPC_MXU_Q16SLL ├─ 010 ─ OPC_MXU_D32SARV
* ├─ 110101 ─ OPC_MXU_Q16SLR ├─ 011 ─ OPC_MXU_Q16SLLV
* │ ├─ 100 ─ OPC_MXU_Q16SLRV
* ├─ 110110 ─ OPC_MXU__POOL17 ─┴─ 101 ─ OPC_MXU_Q16SARV
* ├─ 110110 ─ OPC_MXU__POOL18 ─┴─ 101 ─ OPC_MXU_Q16SARV
* │
* ├─ 110111 ─ OPC_MXU_Q16SAR
* │ 23..22
* ├─ 111000 ─ OPC_MXU__POOL18 ─┬─ 00 ─ OPC_MXU_Q8MUL
* ├─ 111000 ─ OPC_MXU__POOL19 ─┬─ 00 ─ OPC_MXU_Q8MUL
* │ └─ 01 ─ OPC_MXU_Q8MULSU
* │
* │ 20..18
* ├─ 111001 ─ OPC_MXU__POOL19 ─┬─ 000 ─ OPC_MXU_Q8MOVZ
* ├─ 111001 ─ OPC_MXU__POOL20 ─┬─ 000 ─ OPC_MXU_Q8MOVZ
* │ ├─ 001 ─ OPC_MXU_Q8MOVN
* │ ├─ 010 ─ OPC_MXU_D16MOVZ
* │ ├─ 011 ─ OPC_MXU_D16MOVN
@ -1694,7 +1703,7 @@ enum {
* │ └─ 101 ─ OPC_MXU_S32MOV
* │
* │ 23..22
* ├─ 111010 ─ OPC_MXU__POOL20 ─┬─ 00 ─ OPC_MXU_Q8MAC
* ├─ 111010 ─ OPC_MXU__POOL21 ─┬─ 00 ─ OPC_MXU_Q8MAC
* │ └─ 10 ─ OPC_MXU_Q8MACSU
* ├─ 111011 ─ OPC_MXU_Q16SCOP
* ├─ 111100 ─ OPC_MXU_Q8MADL
@ -1750,7 +1759,7 @@ enum {
OPC_MXU_S8SDI = 0x25,
OPC_MXU__POOL15 = 0x26,
OPC_MXU__POOL16 = 0x27,
OPC_MXU_LXB = 0x28,
OPC_MXU__POOL17 = 0x28,
/* not assigned 0x29 */
OPC_MXU_S16LDD = 0x2A,
OPC_MXU_S16STD = 0x2B,
@ -1764,11 +1773,11 @@ enum {
OPC_MXU_D32SAR = 0x33,
OPC_MXU_Q16SLL = 0x34,
OPC_MXU_Q16SLR = 0x35,
OPC_MXU__POOL17 = 0x36,
OPC_MXU__POOL18 = 0x36,
OPC_MXU_Q16SAR = 0x37,
OPC_MXU__POOL18 = 0x38,
OPC_MXU__POOL19 = 0x39,
OPC_MXU__POOL20 = 0x3A,
OPC_MXU__POOL19 = 0x38,
OPC_MXU__POOL20 = 0x39,
OPC_MXU__POOL21 = 0x3A,
OPC_MXU_Q16SCOP = 0x3B,
OPC_MXU_Q8MADL = 0x3C,
OPC_MXU_S32SFL = 0x3D,
@ -1940,6 +1949,17 @@ enum {
/*
* MXU pool 17
*/
enum {
OPC_MXU_LXB = 0x00,
OPC_MXU_LXH = 0x01,
OPC_MXU_LXW = 0x03,
OPC_MXU_LXBU = 0x04,
OPC_MXU_LXHU = 0x05,
};
/*
* MXU pool 18
*/
enum {
OPC_MXU_D32SLLV = 0x00,
OPC_MXU_D32SLRV = 0x01,
@ -1950,7 +1970,7 @@ enum {
};
/*
* MXU pool 18
* MXU pool 19
*/
enum {
OPC_MXU_Q8MUL = 0x00,
@ -1958,7 +1978,7 @@ enum {
};
/*
* MXU pool 19
* MXU pool 20
*/
enum {
OPC_MXU_Q8MOVZ = 0x00,
@ -1970,7 +1990,7 @@ enum {
};
/*
* MXU pool 20
* MXU pool 21
*/
enum {
OPC_MXU_Q8MAC = 0x00,
@ -25331,12 +25351,58 @@ static void decode_opc_mxu__pool16(CPUMIPSState *env, DisasContext *ctx)
* Decode MXU pool17
*
* 1 0 9 8 7 6 5 4 3 2 1 0 9 8 7 6 5 4 3 2 1 0 9 8 7 6 5 4 3 2 1 0
* +-----------+---------+-----+-------+-------+-------+-----------+
* | SPECIAL2 | rb |x x x| XRd | XRa |0 0 0 0|MXU__POOL17|
* +-----------+---------+-----+-------+-------+-------+-----------+
* +-----------+---------+---------+---+---------+-----+-----------+
* | SPECIAL2 | rs | rt |0 0| rd |x x x|MXU__POOL15|
* +-----------+---------+---------+---+---------+-----+-----------+
*
*/
static void decode_opc_mxu__pool17(CPUMIPSState *env, DisasContext *ctx)
{
uint32_t opcode = extract32(ctx->opcode, 6, 2);
switch (opcode) {
case OPC_MXU_LXW:
/* TODO: Implement emulation of LXW instruction. */
MIPS_INVAL("OPC_MXU_LXW");
generate_exception_end(ctx, EXCP_RI);
break;
case OPC_MXU_LXH:
/* TODO: Implement emulation of LXH instruction. */
MIPS_INVAL("OPC_MXU_LXH");
generate_exception_end(ctx, EXCP_RI);
break;
case OPC_MXU_LXHU:
/* TODO: Implement emulation of LXHU instruction. */
MIPS_INVAL("OPC_MXU_LXHU");
generate_exception_end(ctx, EXCP_RI);
break;
case OPC_MXU_LXB:
/* TODO: Implement emulation of LXB instruction. */
MIPS_INVAL("OPC_MXU_LXB");
generate_exception_end(ctx, EXCP_RI);
break;
case OPC_MXU_LXBU:
/* TODO: Implement emulation of LXBU instruction. */
MIPS_INVAL("OPC_MXU_LXBU");
generate_exception_end(ctx, EXCP_RI);
break;
default:
MIPS_INVAL("decode_opc_mxu");
generate_exception_end(ctx, EXCP_RI);
break;
}
}
/*
*
* Decode MXU pool18
*
* 1 0 9 8 7 6 5 4 3 2 1 0 9 8 7 6 5 4 3 2 1 0 9 8 7 6 5 4 3 2 1 0
* +-----------+---------+-----+-------+-------+-------+-----------+
* | SPECIAL2 | rb |x x x| XRd | XRa |0 0 0 0|MXU__POOL18|
* +-----------+---------+-----+-------+-------+-------+-----------+
*
*/
static void decode_opc_mxu__pool18(CPUMIPSState *env, DisasContext *ctx)
{
uint32_t opcode = extract32(ctx->opcode, 18, 3);
@ -25380,15 +25446,15 @@ static void decode_opc_mxu__pool17(CPUMIPSState *env, DisasContext *ctx)
/*
*
* Decode MXU pool18
* Decode MXU pool19
*
* 1 0 9 8 7 6 5 4 3 2 1 0 9 8 7 6 5 4 3 2 1 0 9 8 7 6 5 4 3 2 1 0
* +-----------+---+---+-------+-------+-------+-------+-----------+
* | SPECIAL2 |0 0|x x| XRd | XRc | XRb | XRa |MXU__POOL18|
* | SPECIAL2 |0 0|x x| XRd | XRc | XRb | XRa |MXU__POOL19|
* +-----------+---+---+-------+-------+-------+-------+-----------+
*
*/
static void decode_opc_mxu__pool18(CPUMIPSState *env, DisasContext *ctx)
static void decode_opc_mxu__pool19(CPUMIPSState *env, DisasContext *ctx)
{
uint32_t opcode = extract32(ctx->opcode, 22, 2);
@ -25406,15 +25472,15 @@ static void decode_opc_mxu__pool18(CPUMIPSState *env, DisasContext *ctx)
/*
*
* Decode MXU pool19
* Decode MXU pool20
*
* 1 0 9 8 7 6 5 4 3 2 1 0 9 8 7 6 5 4 3 2 1 0 9 8 7 6 5 4 3 2 1 0
* +-----------+---------+-----+-------+-------+-------+-----------+
* | SPECIAL2 |0 0 0 0 0|x x x| XRc | XRb | XRa |MXU__POOL19|
* | SPECIAL2 |0 0 0 0 0|x x x| XRc | XRb | XRa |MXU__POOL20|
* +-----------+---------+-----+-------+-------+-------+-----------+
*
*/
static void decode_opc_mxu__pool19(CPUMIPSState *env, DisasContext *ctx)
static void decode_opc_mxu__pool20(CPUMIPSState *env, DisasContext *ctx)
{
uint32_t opcode = extract32(ctx->opcode, 18, 3);
@ -25458,15 +25524,15 @@ static void decode_opc_mxu__pool19(CPUMIPSState *env, DisasContext *ctx)
/*
*
* Decode MXU pool20
* Decode MXU pool21
*
* 1 0 9 8 7 6 5 4 3 2 1 0 9 8 7 6 5 4 3 2 1 0 9 8 7 6 5 4 3 2 1 0
* +-----------+---+---+-------+-------+-------+-------+-----------+
* | SPECIAL2 |an2|x x| XRd | XRc | XRb | XRa |MXU__POOL20|
* | SPECIAL2 |an2|x x| XRd | XRc | XRb | XRa |MXU__POOL21|
* +-----------+---+---+-------+-------+-------+-------+-----------+
*
*/
static void decode_opc_mxu__pool20(CPUMIPSState *env, DisasContext *ctx)
static void decode_opc_mxu__pool21(CPUMIPSState *env, DisasContext *ctx)
{
uint32_t opcode = extract32(ctx->opcode, 22, 2);
@ -25669,10 +25735,8 @@ static void decode_opc_mxu(CPUMIPSState *env, DisasContext *ctx)
case OPC_MXU__POOL16:
decode_opc_mxu__pool16(env, ctx);
break;
case OPC_MXU_LXB:
/* TODO: Implement emulation of LXB instruction. */
MIPS_INVAL("OPC_MXU_LXB");
generate_exception_end(ctx, EXCP_RI);
case OPC_MXU__POOL17:
decode_opc_mxu__pool17(env, ctx);
break;
case OPC_MXU_S16LDD:
/* TODO: Implement emulation of S16LDD instruction. */
@ -25724,23 +25788,23 @@ static void decode_opc_mxu(CPUMIPSState *env, DisasContext *ctx)
MIPS_INVAL("OPC_MXU_Q16SLR");
generate_exception_end(ctx, EXCP_RI);
break;
case OPC_MXU__POOL17:
decode_opc_mxu__pool17(env, ctx);
case OPC_MXU__POOL18:
decode_opc_mxu__pool18(env, ctx);
break;
case OPC_MXU_Q16SAR:
/* TODO: Implement emulation of Q16SAR instruction. */
MIPS_INVAL("OPC_MXU_Q16SAR");
generate_exception_end(ctx, EXCP_RI);
break;
case OPC_MXU__POOL18:
decode_opc_mxu__pool18(env, ctx);
break;
case OPC_MXU__POOL19:
decode_opc_mxu__pool19(env, ctx);
break;
case OPC_MXU__POOL20:
decode_opc_mxu__pool20(env, ctx);
break;
case OPC_MXU__POOL21:
decode_opc_mxu__pool21(env, ctx);
break;
case OPC_MXU_Q16SCOP:
/* TODO: Implement emulation of Q16SCOP instruction. */
MIPS_INVAL("OPC_MXU_Q16SCOP");