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Start implementing exception handling by adding frame descriptor entry processing.

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- Soon, we should be able basic exceptions.
This commit is contained in:
Lachlan Sneff
2019-03-02 10:56:02 -08:00
parent 87ddf4f855
commit 5760f6006a
7 changed files with 68 additions and 49 deletions
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8
lib/llvm-backend/src/backend.rs
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@ -59,6 +59,7 @@ struct Callbacks {
dealloc_memory: extern "C" fn(*mut u8, usize) -> LLVMResult,
lookup_vm_symbol: extern "C" fn(*const c_char, usize) -> *const vm::Func,
visit_fde: extern "C" fn(*mut u8, usize, extern "C" fn(*mut u8)),
}
extern "C" {
@ -165,11 +166,18 @@ fn get_callbacks() -> Callbacks {
}
}
extern "C" fn visit_fde(fde: *mut u8, size: usize, visitor: extern "C" fn(*mut u8)) {
unsafe {
crate::platform::visit_fde(fde, size, visitor);
}
}
Callbacks {
alloc_memory,
protect_memory,
dealloc_memory,
lookup_vm_symbol,
visit_fde,
}
}