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fox32: fix stack overflow when initializing memory

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This commit is contained in:
Lua MacDougall 2022-04-16 23:30:54 -07:00 committed by Ry
parent fb3d681f55
commit a8ff66c3a0
1 changed files with 5 additions and 3 deletions
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8
src/memory.rs
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@ -23,8 +23,10 @@ struct MemoryInner {
impl MemoryInner {
pub fn new(rom: &[u8]) -> Self {
let mut this = Self {
ram: Box::new([0u8; MEMORY_RAM_SIZE]),
rom: Box::new([0u8; MEMORY_ROM_SIZE]),
// HACK: allocate directly on the heap to avoid a stack overflow
// at runtime while trying to move around a 64MB array
ram: unsafe { Box::from_raw(Box::into_raw(vec![0u8; MEMORY_RAM_SIZE].into_boxed_slice()) as *mut MemoryRam) },
rom: unsafe { Box::from_raw(Box::into_raw(vec![0u8; MEMORY_ROM_SIZE].into_boxed_slice()) as *mut MemoryRom) },
};
this.rom.as_mut_slice().write(rom).expect("failed to copy ROM to memory");
this
@ -107,4 +109,4 @@ impl Memory {
self.write_8(address + 2, ((word & 0x00FF0000) >> 16) as u8);
self.write_8(address + 3, ((word & 0xFF000000) >> 24) as u8);
}
}
}