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ARM: Add table indexing with string keys. Add get global.

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This commit is contained in:
Mike Pall 2011-04-04 01:51:29 +02:00
parent 0e7009ddc8
commit dd4a043b78
1 changed files with 58 additions and 2 deletions
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60
src/buildvm_arm.dasc
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@ -1226,15 +1226,70 @@ static void build_ins(BuildCtx *ctx, BCOp op, int defop)
break; break;
case BC_GGET: case BC_GGET:
| // RA = dst*8, RC = str_const (~)
case BC_GSET: case BC_GSET:
| NYI | // RA = dst*8, RC = str_const (~)
| ldr LFUNC:CARG2, [BASE, FRAME_FUNC]
| mvn RC, RC
| ldr TAB:CARG1, LFUNC:CARG2->env
| ldr STR:RC, [KBASE, RC, lsl #2]
if (op == BC_GGET) {
| b ->BC_TGETS_Z
} else {
| b ->BC_TSETS_Z
}
break; break;
case BC_TGETV: case BC_TGETV:
| NYI | NYI
break; break;
case BC_TGETS: case BC_TGETS:
| NYI | decode_RB8 RB, INS
| and RC, RC, #255
| // RA = dst*8, RB = table*8, RC = str_const (~)
| ldrd CARG12, [BASE, RB]
| mvn RC, RC
| ldr STR:RC, [KBASE, RC, lsl #2] // STALL: early RC.
| checktab CARG2, ->vmeta_tgets
|->BC_TGETS_Z:
| // (TAB:RB =) TAB:CARG1 = GCtab *, STR:RC = GCstr *, RA = dst*8
| ldr CARG3, TAB:CARG1->hmask
| ldr CARG4, STR:RC->hash
| ldr NODE:INS, TAB:CARG1->node
| mov TAB:RB, TAB:CARG1
| and CARG3, CARG3, CARG4 // idx = str->hash & tab->hmask
| add CARG3, CARG3, CARG3, lsl #1
| add NODE:INS, NODE:INS, CARG3, lsl #3 // node = tab->node + idx*3*8
|1:
| ldrd CARG12, NODE:INS->key // STALL: early NODE:INS.
| ldrd CARG34, NODE:INS->val
| ldr NODE:INS, NODE:INS->next
| cmp CARG1, STR:RC
| checktpeq CARG2, LJ_TSTR
| bne >4
| checktp CARG4, LJ_TNIL
| beq >5
|3:
| ins_next1
| ins_next2
| strd CARG34, [BASE, RA]
| ins_next3
|
|4: // Follow hash chain.
| cmp NODE:INS, #0
| bne <1
| // End of hash chain: key not found, nil result.
|
|5: // Check for __index if table value is nil.
| ldr TAB:CARG1, TAB:RB->metatable
| mov CARG3, #0 // Optional clear of undef. value (during load stall).
| mvn CARG4, #~LJ_TNIL
| cmp TAB:CARG1, #0
| beq <3 // No metatable: done.
| ldrb CARG2, TAB:CARG1->nomm
| tst CARG2, #1<<MM_index
| bne <3 // 'no __index' flag set: done.
| b ->vmeta_tgets
break; break;
case BC_TGETB: case BC_TGETB:
| NYI | NYI
@ -1244,6 +1299,7 @@ static void build_ins(BuildCtx *ctx, BCOp op, int defop)
| NYI | NYI
break; break;
case BC_TSETS: case BC_TSETS:
|->BC_TSETS_Z:
| NYI | NYI
break; break;
case BC_TSETB: case BC_TSETB: