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PPC: Fix write barrier and linkage for BC_USETV/BC_USETS.

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Some older linkers can't rearrange to accomodate R_PPC_REL14.
This commit is contained in:
Mike Pall 2010-09-13 21:19:33 +02:00
parent cd6a45760a
commit dcfc385bf3
1 changed files with 9 additions and 7 deletions
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16
src/buildvm_ppc.dasc
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@ -1480,24 +1480,25 @@ static void build_ins(BuildCtx *ctx, BCOp op, int defop)
| lbz TMP3, UPVAL:RB->marked
| lwz CARG2, UPVAL:RB->v
| andi. TMP3, TMP3, LJ_GC_BLACK // isblack(uv)
| lbz TMP2, UPVAL:RB->closed
| evmergehi TMP0, TMP1, TMP1
| lbz TMP0, UPVAL:RB->closed
| evmergehi TMP2, TMP1, TMP1
| evstdd TMP1, 0(CARG2)
| cmplwi cr1, TMP2, 0
| cmplwi cr1, TMP0, 0
| cror 4*cr0+eq, 4*cr0+eq, 4*cr1+eq
| subi TMP0, TMP0, LJ_TISNUM
| subi TMP2, TMP2, LJ_TISNUM
| bne >2 // Upvalue is closed and black?
|1:
| ins_next
|
|2: // Check if new value is collectable.
| cmplwi TMP0, LJ_TISGCV - LJ_TISNUM
| cmplwi TMP2, LJ_TISGCV - LJ_TISNUM
| bge <1 // tvisgcv(v)
| lbz TMP3, GCOBJ:TMP1->gch.marked
| andi. TMP3, TMP3, LJ_GC_WHITES // iswhite(v)
| la CARG1, GG_DISP2G(DISPATCH)
| // Crossed a write barrier. Move the barrier forward.
| bnel extern lj_gc_barrieruv // (global_State *g, TValue *tv)
| beq <1
| bl extern lj_gc_barrieruv // (global_State *g, TValue *tv)
| b <1
break;
case BC_USETS:
@ -1526,7 +1527,8 @@ static void build_ins(BuildCtx *ctx, BCOp op, int defop)
| crand 4*cr0+eq, 4*cr0+eq, 4*cr1+eq
| la CARG1, GG_DISP2G(DISPATCH)
| // Crossed a write barrier. Move the barrier forward.
| bnel extern lj_gc_barrieruv // (global_State *g, TValue *tv)
| beq <1
| bl extern lj_gc_barrieruv // (global_State *g, TValue *tv)
| b <1
break;
case BC_USETN: