koniifer/holey-bytes
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Added stack hopefully maybe who knows

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This commit is contained in:
Erin 2023-11-15 19:17:25 +01:00
parent b84ff70014
commit 42488e1e4a
1 changed files with 20 additions and 0 deletions
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20
hbxrt/src/main.rs
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@ -19,6 +19,25 @@ fn main() -> Result<(), Box<dyn std::error::Error>> {
exit(1);
};
// Allocate stack
const STACK_SIZE: usize = 1024 * 1024 * 2;
let stack_ptr = unsafe {
mmap::<std::fs::File>(
None,
NonZeroUsize::new(STACK_SIZE).expect("Stack size should be > 0"),
ProtFlags::PROT_GROWSDOWN | ProtFlags::PROT_READ | ProtFlags::PROT_WRITE,
MapFlags::MAP_GROWSDOWN
| MapFlags::MAP_STACK
| MapFlags::MAP_ANON
| MapFlags::MAP_PRIVATE,
None,
0,
)
}?;
eprintln!("[I] Stack allocated at {stack_ptr:p}");
// Load program
eprintln!("[I] Loading image from \"{image_path}\"");
let file = File::open(image_path)?;
@ -36,6 +55,7 @@ fn main() -> Result<(), Box<dyn std::error::Error>> {
eprintln!("[I] Image loaded at {ptr:p}");
let mut vm = unsafe { Vm::<_, 0>::new(mem::HostMemory, Address::new(ptr as u64)) };
vm.write_reg(254, stack_ptr as u64);
// Memory access fault handling
unsafe {