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PPC: Handle stack growth during function calls.

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This commit is contained in:
Mike Pall 2010-08-31 23:52:45 +02:00
parent 233dc76078
commit fc1866fb6f
1 changed files with 19 additions and 2 deletions
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21
src/buildvm_ppc.dasc
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@ -346,10 +346,27 @@ static void build_subroutines(BuildCtx *ctx)
|//-----------------------------------------------------------------------
|
|->vm_growstack_c: // Grow stack for C function.
| NYI
| li CARG2, LUA_MINSTACK
| b >2
|
|->vm_growstack_l: // Grow stack for Lua function.
| NYI
| // BASE = new base, RA = BASE+framesize*8, RC = nargs*8, PC = first PC
| add RC, BASE, RC
| sub RA, RA, BASE
| stw BASE, L->base
| addi PC, PC, 4 // Must point after first instruction.
| stw RC, L->top
| srwi CARG2, RA, 3
|2:
| // L->base = new base, L->top = top
| mr CARG1, L
| bl extern lj_state_growstack // (lua_State *L, int n)
| lwz BASE, L->base
| lwz RC, L->top
| lwz LFUNC:RB, FRAME_FUNC(BASE)
| sub RC, RC, BASE
| // BASE = new base, RB = LFUNC/CFUNC, RC = nargs*8, FRAME_PC(BASE) = PC
| ins_callt // Just retry the call.
|
|//-----------------------------------------------------------------------
|//-- Entry points into the assembler VM ---------------------------------