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PPC: Add unary instructions.

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This commit is contained in:
Mike Pall 2010-09-07 01:15:21 +02:00
parent 341820987b
commit 15834c3990
1 changed files with 31 additions and 3 deletions
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34
src/buildvm_ppc.dasc
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@ -1121,13 +1121,41 @@ static void build_ins(BuildCtx *ctx, BCOp op, int defop)
| ins_next_
break;
case BC_NOT:
| NYI
| // RA = dst*8, RD = src*8
| lwzx TMP0, BASE, RD
| subfic TMP1, TMP0, LJ_TTRUE
| adde TMP0, TMP0, TMP1
| stwx TMP0, BASE, RA
| ins_next
break;
case BC_UNM:
| NYI
| // RA = dst*8, RD = src*8
| evlddx TMP0, BASE, RD
| lus TMP1, 0x8000
| li TMP2, 0
| checknum TMP0
| evmergelo TMP1, TMP1, TMP2
| checkfail ->vmeta_unm
| evxor TMP0, TMP0, TMP1
| evstddx TMP0, BASE, RA
| ins_next
break;
case BC_LEN:
| NYI
| // RA = dst*8, RD = src*8
| evlddx CARG1, BASE, RD
| checkstr CARG1
| checkfail >2
| lwz CRET1, STR:CARG1->len
|1:
| efdcfsi TMP0, CRET1
| evstddx TMP0, BASE, RA
| ins_next
|2:
| checktab CARG1
| checkfail ->vmeta_len
| bl extern lj_tab_len // (GCtab *t)
| // Returns uint32_t (but less than 2^31).
| b <1
break;
/* -- Binary ops -------------------------------------------------------- */