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ARM: Handle stack growth during function calls.

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This commit is contained in:
Mike Pall 2011-04-08 02:44:56 +02:00
parent 3f8fed5358
commit 0046f955eb
1 changed files with 21 additions and 2 deletions
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23
src/buildvm_arm.dasc
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@ -338,10 +338,29 @@ static void build_subroutines(BuildCtx *ctx)
|//----------------------------------------------------------------------- |//-----------------------------------------------------------------------
| |
|->vm_growstack_c: // Grow stack for C function. |->vm_growstack_c: // Grow stack for C function.
| NYI | // CARG1 = L
| mov CARG2, #LUA_MINSTACK
| b >2
| |
|->vm_growstack_l: // Grow stack for Lua function. |->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
| mov CARG1, L
| str BASE, L->base
| add PC, PC, #4 // Must point after first instruction.
| str RC, L->top
| lsr CARG3, RA, #3
|2:
| // L->base = new base, L->top = top
| str PC, SAVE_PC
| bl extern lj_state_growstack // (lua_State *L, int n)
| ldr BASE, L->base
| ldr RC, L->top
| ldr LFUNC:CARG3, [BASE, FRAME_FUNC]
| sub NARGS8: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 --------------------------------- |//-- Entry points into the assembler VM ---------------------------------