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Add support for internal fields.

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This commit is contained in:
Nick Lewycky
2019-07-31 13:10:51 -07:00
parent 0e1fedceef
commit 931d556de1
2 changed files with 60 additions and 9 deletions
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29
lib/llvm-backend/src/intrinsics.rs
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@ -18,7 +18,7 @@ use wasmer_runtime_core::{
GlobalIndex, ImportedFuncIndex, LocalFuncIndex, LocalOrImport, MemoryIndex, SigIndex,
TableIndex, Type,
},
vm::Ctx,
vm::{Ctx, INTERNALS_SIZE},
};
fn type_to_llvm_ptr(intrinsics: &Intrinsics, ty: Type) -> PointerType {
@ -942,4 +942,31 @@ impl<'a> CtxType<'a> {
(imported_func_cache.func_ptr, imported_func_cache.ctx_ptr)
}
pub fn internal_field(
&mut self,
index: usize,
intrinsics: &Intrinsics,
builder: &Builder,
) -> PointerValue {
assert!(index < INTERNALS_SIZE);
let local_internals_ptr_ptr = unsafe {
builder.build_struct_gep(
self.ctx_ptr_value,
offset_to_index(Ctx::offset_internals()),
"local_internals_ptr_ptr",
)
};
let local_internals_ptr = builder
.build_load(local_internals_ptr_ptr, "local_internals_ptr")
.into_pointer_value();
unsafe {
builder.build_in_bounds_gep(
local_internals_ptr,
&[intrinsics.i32_ty.const_int(index as u64, false)],
"local_internal_field_ptr",
)
}
}
}