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PPC: Add continuation dispatch and RA/nop continuations.

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This commit is contained in:
Mike Pall 2010-09-11 01:52:26 +02:00
parent cabcce1e1d
commit c330af2452
1 changed files with 25 additions and 5 deletions
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30
src/buildvm_ppc.dasc
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@ -466,7 +466,7 @@ static void build_subroutines(BuildCtx *ctx)
| li TMP0, -8
| evlddx LFUNC:RB, BASE, TMP0
| checkfunc LFUNC:RB
| checkfail ->vmeta_call // Ensure KBASE defined and != BASE.
| checkfail ->vmeta_call
|
|->vm_call_dispatch_f:
| ins_call
@ -500,10 +500,26 @@ static void build_subroutines(BuildCtx *ctx)
|//-- Metamethod handling ------------------------------------------------
|//-----------------------------------------------------------------------
|
|// The lj_meta_* functions (except for lj_meta_cat) don't reallocate the
|// stack, so BASE doesn't need to be reloaded across these calls.
|
|//-- Continuation dispatch ----------------------------------------------
|
|->cont_dispatch:
| NYI
| // BASE = meta base, RA = resultptr, RD = (nresults+1)*8
| lwz TMP0, -12(BASE) // Continuation.
| rlwinm TMP1, PC, 0, 0, 28
| mr RB, BASE
| sub BASE, BASE, TMP1 // Restore caller BASE.
| lwz LFUNC:TMP1, FRAME_FUNC(BASE)
| subi TMP2, RD, 8
| mtctr TMP0
| lwz PC, -16(RB) // Restore PC from [cont|PC].
| lwz TMP1, LFUNC:TMP1->pc
| evstddx TISNIL, RA, TMP2 // Ensure one valid arg.
| lwz KBASE, PC2PROTO(k)(TMP1)
| // BASE = base, RA = resultptr, RB = meta base
| bctr // Jump to continuation.
|
|->cont_cat:
| NYI
@ -537,10 +553,14 @@ static void build_subroutines(BuildCtx *ctx)
|->vmeta_comp:
| NYI
|->cont_nop:
| NYI
| ins_next
|
|->cont_ra:
| NYI
|->cont_ra: // RA = resultptr
| lwz INS, -4(PC)
| evldd TMP0, 0(RA)
| decode_RA8 TMP1, INS
| evstddx TMP0, BASE, TMP1
| b ->cont_nop
|
|->cont_condt:
| NYI