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Fix altstack calculation typo.

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This commit is contained in:
4lDO2
2024-03-05 17:37:56 +01:00
parent c7da5a438c
commit e012d6cfca
1 changed files with 2 additions and 2 deletions
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src/context/signal.rs
+2 -2
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@@ -151,10 +151,10 @@ pub fn signal_handler() {
// TODO: 16 bytes alignment is sufficient unless XSAVE is enabled.
const STACK_ALIGN: usize = 64;
let new_sp_unless_altstack = (regs.stack_pointer() - STACK_ADJUST) & usize::wrapping_neg(STACK_ALIGN);
let new_sp_unless_altstack = (regs.stack_pointer() - STACK_ADJUST) / STACK_ALIGN * STACK_ALIGN;
let new_sp = match handler.altstack {
Some(altstack) if !(altstack.base.get()..altstack.base.get() + altstack.base.get() + altstack.len.get()).contains(&regs.stack_pointer()) => altstack.base.get() + altstack.len.get(),
Some(altstack) if !(altstack.base.get()..altstack.base.get() + altstack.len.get()).contains(&regs.stack_pointer()) => altstack.base.get() + altstack.len.get(),
_ => new_sp_unless_altstack,
} - size_of::<SignalStack>();