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ARM: Add upvalue get/set and closure-related instructions.

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Mike Pall 2011-04-08 02:50:56 +02:00
parent 3af41060c7
commit 9e18260fb4
1 changed files with 115 additions and 7 deletions
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122
src/buildvm_arm.dasc
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@ -1834,27 +1834,135 @@ static void build_ins(BuildCtx *ctx, BCOp op, int defop)
/* -- Upvalue and function ops ------------------------------------------ */
case BC_UGET:
| NYI
| // RA = dst*8, RC = uvnum
| ldr LFUNC:CARG2, [BASE, FRAME_FUNC]
| lsl RC, RC, #2
| add RC, RC, #offsetof(GCfuncL, uvptr)
| ldr UPVAL:CARG2, [LFUNC:CARG2, RC]
| ldr CARG2, UPVAL:CARG2->v
| ldrd CARG34, [CARG2]
| ins_next1
| ins_next2
| strd CARG34, [BASE, RA]
| ins_next3
break;
case BC_USETV:
| NYI
| // RA = uvnum*8, RC = src
| ldr LFUNC:CARG2, [BASE, FRAME_FUNC]
| lsr RA, RA, #1
| add RA, RA, #offsetof(GCfuncL, uvptr)
| lsl RC, RC, #3
| ldr UPVAL:CARG2, [LFUNC:CARG2, RA]
| ldrd CARG34, [BASE, RC]
| ldrb RB, UPVAL:CARG2->marked
| ldrb RC, UPVAL:CARG2->closed
| ldr CARG2, UPVAL:CARG2->v
| tst RB, #LJ_GC_BLACK // isblack(uv)
| add RB, CARG4, #-LJ_TISGCV
| cmpne RC, #0
| strd CARG34, [CARG2]
| bne >2 // Upvalue is closed and black?
|1:
| ins_next
|
|2: // Check if new value is collectable.
| cmn RB, #-(LJ_TISNUM - LJ_TISGCV)
| ldrbhi RC, GCOBJ:CARG3->gch.marked
| bls <1 // tvisgcv(v)
| sub CARG1, DISPATCH, #-GG_DISP2G
| tst RC, #LJ_GC_WHITES
| // Crossed a write barrier. Move the barrier forward.
| blne extern lj_gc_barrieruv // (global_State *g, TValue *tv)
| b <1
break;
case BC_USETS:
| NYI
| // RA = uvnum*8, RC = str_const (~)
| ldr LFUNC:CARG2, [BASE, FRAME_FUNC]
| lsr RA, RA, #1
| add RA, RA, #offsetof(GCfuncL, uvptr)
| mvn RC, RC
| ldr UPVAL:CARG2, [LFUNC:CARG2, RA]
| ldr STR:CARG3, [KBASE, RC, lsl #2]
| mvn CARG4, #~LJ_TSTR
| ldrb RB, UPVAL:CARG2->marked
| ldr CARG2, UPVAL:CARG2->v
| ldrb RC, UPVAL:CARG2->closed
| tst RB, #LJ_GC_BLACK // isblack(uv)
| ldrb RB, STR:CARG3->marked
| strd CARG34, [CARG2]
| bne >2
|1:
| ins_next
|
|2: // Check if string is white and ensure upvalue is closed.
| tst RB, #LJ_GC_WHITES // iswhite(str)
| cmpne RC, #0
| sub CARG1, DISPATCH, #-GG_DISP2G
| // Crossed a write barrier. Move the barrier forward.
| blne extern lj_gc_barrieruv // (global_State *g, TValue *tv)
| b <1
break;
case BC_USETN:
| NYI
| // RA = uvnum*8, RC = num_const
| ldr LFUNC:CARG2, [BASE, FRAME_FUNC]
| lsr RA, RA, #1
| add RA, RA, #offsetof(GCfuncL, uvptr)
| lsl RC, RC, #3
| ldr UPVAL:CARG2, [LFUNC:CARG2, RA]
| ldrd CARG34, [KBASE, RC]
| ldr CARG2, UPVAL:CARG2->v
| ins_next1
| ins_next2
| strd CARG34, [CARG2]
| ins_next3
break;
case BC_USETP:
| NYI
| // RA = uvnum*8, RC = primitive_type (~)
| ldr LFUNC:CARG2, [BASE, FRAME_FUNC]
| lsr RA, RA, #1
| add RA, RA, #offsetof(GCfuncL, uvptr)
| ldr UPVAL:CARG2, [LFUNC:CARG2, RA]
| mvn RC, RC
| ldr CARG2, UPVAL:CARG2->v
| ins_next1
| ins_next2
| str RC, [CARG2, #4]
| ins_next3
break;
case BC_UCLO:
| NYI
| // RA = level*8, RC = target
| ldr CARG3, L->openupval
| add RC, PC, RC, lsl #2
| str BASE, L->base
| cmp CARG3, #0
| sub PC, RC, #0x20000
| beq >1
| mov CARG1, L
| add CARG2, BASE, RA
| bl extern lj_func_closeuv // (lua_State *L, TValue *level)
| ldr BASE, L->base
|1:
| ins_next
break;
case BC_FNEW:
| NYI
| // RA = dst*8, RC = proto_const (~) (holding function prototype)
| mvn RC, RC
| str BASE, L->base
| ldr CARG2, [KBASE, RC, lsl #2]
| str PC, SAVE_PC
| ldr CARG3, [BASE, FRAME_FUNC]
| mov CARG1, L
| // (lua_State *L, GCproto *pt, GCfuncL *parent)
| bl extern lj_func_newL_gc
| // Returns GCfuncL *.
| ldr BASE, L->base
| mvn CARG2, #~LJ_TFUNC
| ins_next1
| ins_next2
| strd CARG12, [BASE, RA]
| ins_next3
break;
/* -- Table ops --------------------------------------------------------- */