57 lines
2.1 KiB
Rust
57 lines
2.1 KiB
Rust
// Copyright 2012 The Rust Project Developers. See the COPYRIGHT
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// file at the top-level directory of this distribution and at
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// http://rust-lang.org/COPYRIGHT.
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//
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// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
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// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
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// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
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// option. This file may not be copied, modified, or distributed
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// except according to those terms.
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use driver::session;
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use middle::trans::base;
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use middle::trans::type_::Type;
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use lib::llvm::{ModuleRef, ValueRef};
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pub struct Upcalls {
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trace: ValueRef,
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call_shim_on_c_stack: ValueRef,
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call_shim_on_rust_stack: ValueRef,
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rust_personality: ValueRef,
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reset_stack_limit: ValueRef
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}
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macro_rules! upcall (
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(fn $name:ident($($arg:expr),+) -> $ret:expr) => ({
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let fn_ty = Type::func([ $($arg),* ], &$ret);
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base::decl_cdecl_fn(llmod, ~"upcall_" + stringify!($name), fn_ty)
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});
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(nothrow fn $name:ident($($arg:expr),+) -> $ret:expr) => ({
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let fn_ty = Type::func([ $($arg),* ], &$ret);
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let decl = base::decl_cdecl_fn(llmod, ~"upcall_" + stringify!($name), fn_ty);
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base::set_no_unwind(decl);
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decl
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});
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(nothrow fn $name:ident -> $ret:expr) => ({
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let fn_ty = Type::func([], &$ret);
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let decl = base::decl_cdecl_fn(llmod, ~"upcall_" + stringify!($name), fn_ty);
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base::set_no_unwind(decl);
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decl
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})
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)
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pub fn declare_upcalls(targ_cfg: @session::config, llmod: ModuleRef) -> @Upcalls {
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let opaque_ptr = Type::i8().ptr_to();
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let int_ty = Type::int(targ_cfg.arch);
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@Upcalls {
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trace: upcall!(fn trace(opaque_ptr, opaque_ptr, int_ty) -> Type::void()),
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call_shim_on_c_stack: upcall!(fn call_shim_on_c_stack(opaque_ptr, opaque_ptr) -> int_ty),
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call_shim_on_rust_stack:
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upcall!(fn call_shim_on_rust_stack(opaque_ptr, opaque_ptr) -> int_ty),
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rust_personality: upcall!(nothrow fn rust_personality -> Type::i32()),
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reset_stack_limit: upcall!(nothrow fn reset_stack_limit -> Type::void())
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}
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}
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