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vm: don't scribble memory handling leaf signals

db4
Joe Groff 2011-12-13 19:36:05 -08:00
parent 7c9332e966
commit 1c7bd9a7b4
1 changed files with 2 additions and 5 deletions
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7
vm/cpu-x86.cpp
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@ -48,13 +48,10 @@ void factor_vm::dispatch_signal_handler(cell *sp, cell *pc, cell handler)
else if (offset == 16 - sizeof(cell)) else if (offset == 16 - sizeof(cell))
{ {
// Make a fake frame for the leaf procedure // Make a fake frame for the leaf procedure
code_block *leaf_block = code->code_block_for_address(*pc); FACTOR_ASSERT(code->code_block_for_address(*pc) != NULL);
FACTOR_ASSERT(leaf_block != NULL);
cell newsp = *sp - LEAF_FRAME_SIZE; cell newsp = *sp - LEAF_FRAME_SIZE;
*(cell*)(newsp + 3*sizeof(cell)) = 4*sizeof(cell); *(cell*)newsp = *pc;
*(cell*)(newsp + 2*sizeof(cell)) = (cell)leaf_block->entry_point();
*(cell*) newsp = *pc;
*sp = newsp; *sp = newsp;
handler_word = tagged<word>(special_objects[LEAF_SIGNAL_HANDLER_WORD]); handler_word = tagged<word>(special_objects[LEAF_SIGNAL_HANDLER_WORD]);
} }