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PPC: Unwind the stack after an error is thrown.

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Mike Pall 2010-09-01 00:27:48 +02:00
parent d67eb4de49
commit 7ccdc8045b
1 changed files with 22 additions and 4 deletions
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26
src/buildvm_ppc.dasc
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@ -345,14 +345,32 @@ static void build_subroutines(BuildCtx *ctx)
| b <2
|
|->vm_unwind_c: // Unwind C stack, return from vm_pcall.
| NYI
| // (void *cframe, int errcode)
| mr sp, CARG1
| mr CRET1, CARG2
|->vm_unwind_c_eh: // Landing pad for external unwinder.
| NYI
| lwz L, SAVE_L
| li TMP0, ~LJ_VMST_C
| lwz GL:TMP1, L->glref
| stw TMP0, GL:TMP1->vmstate
| b ->vm_leave_unw
|
|->vm_unwind_ff: // Unwind C stack, return from ff pcall.
| NYI
| // (void *cframe)
| rlwinm sp, CARG1, 0, 0, 29
|->vm_unwind_ff_eh: // Landing pad for external unwinder.
| NYI
| lwz L, SAVE_L
| lwz BASE, L->base
| li TMP1, LJ_TFALSE
| lwz DISPATCH, L->glref // Setup pointer to dispatch table.
| li_vmstate INTERP
| lwz PC, FRAME_PC(BASE) // Fetch PC of previous frame.
| subi RA, BASE, 8 // Results start at BASE-8.
| addi DISPATCH, DISPATCH, GG_G2DISP
| stw TMP1, 0(RA) // Prepend false to error message.
| li RD, 16 // 2 results: false + error message.
| st_vmstate
| b ->vm_returnc
|
|//-----------------------------------------------------------------------
|//-- Grow stack for calls -----------------------------------------------