Commit d5dbd6eb authored by Richard Henderson's avatar Richard Henderson
Browse files

target-tilegx: Implement system and memory management instructions 



Most of which are either nops or exceptions.

Reviewed-by: default avatarPeter Maydell <peter.maydell@linaro.org>
Signed-off-by: default avatarRichard Henderson <rth@twiddle.net>
parent 73c54377

target-tilegx/translate.c

+54 −23
Original line number Diff line number Diff line
@@ -248,27 +248,71 @@ static TileExcp gen_rr_opcode(DisasContext *dc, unsigned opext, 
    TCGv tdest, tsrca;

    const char *mnemonic;

    TCGMemOp memop;

    TileExcp ret = TILEGX_EXCP_NONE;



    /* Eliminate nops and jumps before doing anything else.  */

    /* Eliminate instructions with no output before doing anything else.  */

    switch (opext) {

    case OE_RR_Y0(NOP):

    case OE_RR_Y1(NOP):

    case OE_RR_X0(NOP):

    case OE_RR_X1(NOP):

        mnemonic = "nop";

        goto do_nop;

        goto done0;

    case OE_RR_Y0(FNOP):

    case OE_RR_Y1(FNOP):

    case OE_RR_X0(FNOP):

    case OE_RR_X1(FNOP):

        mnemonic = "fnop";

    do_nop:

        goto done0;

    case OE_RR_X1(DRAIN):

        mnemonic = "drain";

        goto done0;

    case OE_RR_X1(FLUSHWB):

        mnemonic = "flushwb";

        goto done0;

    case OE_RR_X1(ILL):

    case OE_RR_Y1(ILL):

        mnemonic = (dest == 0x1c && srca == 0x25 ? "bpt" : "ill");

        qemu_log_mask(CPU_LOG_TB_IN_ASM, "%s", mnemonic);

        return TILEGX_EXCP_OPCODE_UNKNOWN;

    case OE_RR_X1(MF):

        mnemonic = "mf";

        goto done0;

    case OE_RR_X1(NAP):

        /* ??? This should yield, especially in system mode.  */

        mnemonic = "nap";

        goto done0;

    case OE_RR_X1(SWINT0):

    case OE_RR_X1(SWINT2):

    case OE_RR_X1(SWINT3):

        return TILEGX_EXCP_OPCODE_UNIMPLEMENTED;

    case OE_RR_X1(SWINT1):

        ret = TILEGX_EXCP_SYSCALL;

        mnemonic = "swint1";

    done0:

        if (srca || dest) {

            return TILEGX_EXCP_OPCODE_UNIMPLEMENTED;

        }

        qemu_log_mask(CPU_LOG_TB_IN_ASM, "%s", mnemonic);

        return TILEGX_EXCP_NONE;

        return ret;



    case OE_RR_X1(DTLBPR):

        return TILEGX_EXCP_OPCODE_UNIMPLEMENTED;

    case OE_RR_X1(FINV):

        mnemonic = "finv";

        goto done1;

    case OE_RR_X1(FLUSH):

        mnemonic = "flush";

        goto done1;

    case OE_RR_X1(ICOH):

        mnemonic = "icoh";

        goto done1;

    case OE_RR_X1(INV):

        mnemonic = "inv";

        goto done1;

    case OE_RR_X1(WH64):

        mnemonic = "wh64";

        goto done1;

    case OE_RR_X1(JRP):

    case OE_RR_Y1(JRP):

        mnemonic = "jrp";
@@ -291,8 +335,12 @@ static TileExcp gen_rr_opcode(DisasContext *dc, unsigned opext, 
        dc->jmp.cond = TCG_COND_ALWAYS;

        dc->jmp.dest = tcg_temp_new();

        tcg_gen_andi_tl(dc->jmp.dest, load_gr(dc, srca), ~7);

    done1:

        if (dest) {

            return TILEGX_EXCP_OPCODE_UNIMPLEMENTED;

        }

        qemu_log_mask(CPU_LOG_TB_IN_ASM, "%s %s", mnemonic, reg_names[srca]);

        return TILEGX_EXCP_NONE;

        return ret;

    }



    tdest = dest_gr(dc, dest);
@@ -309,17 +357,8 @@ static TileExcp gen_rr_opcode(DisasContext *dc, unsigned opext, 
        gen_helper_cnttz(tdest, tsrca);

        mnemonic = "cnttz";

        break;

    case OE_RR_X1(DRAIN):

    case OE_RR_X1(DTLBPR):

    case OE_RR_X1(FINV):

    case OE_RR_X1(FLUSHWB):

    case OE_RR_X1(FLUSH):

    case OE_RR_X0(FSINGLE_PACK1):

    case OE_RR_Y0(FSINGLE_PACK1):

    case OE_RR_X1(ICOH):

    case OE_RR_X1(ILL):

    case OE_RR_Y1(ILL):

    case OE_RR_X1(INV):

    case OE_RR_X1(IRET):

        return TILEGX_EXCP_OPCODE_UNIMPLEMENTED;

    case OE_RR_X1(LD1S):
@@ -393,9 +432,6 @@ static TileExcp gen_rr_opcode(DisasContext *dc, unsigned opext, 
        tcg_gen_movi_tl(tdest, dc->pc + TILEGX_BUNDLE_SIZE_IN_BYTES);

        mnemonic = "lnk";

        break;

    case OE_RR_X1(MF):

    case OE_RR_X1(NAP):

        return TILEGX_EXCP_OPCODE_UNIMPLEMENTED;

    case OE_RR_X0(PCNT):

    case OE_RR_Y0(PCNT):

        gen_helper_pcnt(tdest, tsrca);
@@ -411,10 +447,6 @@ static TileExcp gen_rr_opcode(DisasContext *dc, unsigned opext, 
        tcg_gen_bswap64_tl(tdest, tsrca);

        mnemonic = "revbytes";

        break;

    case OE_RR_X1(SWINT0):

    case OE_RR_X1(SWINT1):

    case OE_RR_X1(SWINT2):

    case OE_RR_X1(SWINT3):

    case OE_RR_X0(TBLIDXB0):

    case OE_RR_Y0(TBLIDXB0):

    case OE_RR_X0(TBLIDXB1):
@@ -423,14 +455,13 @@ static TileExcp gen_rr_opcode(DisasContext *dc, unsigned opext, 
    case OE_RR_Y0(TBLIDXB2):

    case OE_RR_X0(TBLIDXB3):

    case OE_RR_Y0(TBLIDXB3):

    case OE_RR_X1(WH64):

    default:

        return TILEGX_EXCP_OPCODE_UNIMPLEMENTED;

    }



    qemu_log_mask(CPU_LOG_TB_IN_ASM, "%s %s, %s", mnemonic,

                  reg_names[dest], reg_names[srca]);

    return TILEGX_EXCP_NONE;

    return ret;

}



static TileExcp gen_rrr_opcode(DisasContext *dc, unsigned opext,