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#[cfg(all(unix, feature = "jit"))]
use std::ffi::c_int;
#[cfg(feature = "jit")]
use std::ffi::c_void;
// FIXME replace with core::ffi::c_size_t once stablized
#[allow(non_camel_case_types)]
#[cfg(feature = "jit")]
type size_t = usize;
macro_rules! builtin_functions {
(
$register:ident;
$(
$(#[$attr:meta])?
fn $name:ident($($arg_name:ident: $arg_ty:ty),*) -> $ret_ty:ty;
)*
) => {
#[cfg(feature = "jit")]
#[allow(improper_ctypes)]
extern "C" {
$(
$(#[$attr])?
fn $name($($arg_name: $arg_ty),*) -> $ret_ty;
)*
}
#[cfg(feature = "jit")]
pub(crate) fn $register(builder: &mut cranelift_jit::JITBuilder) {
for (name, val) in [$($(#[$attr])? (stringify!($name), $name as *const u8)),*] {
builder.symbol(name, val);
}
}
};
}
builtin_functions! {
register_functions_for_jit;
// integers
fn __multi3(a: i128, b: i128) -> i128;
fn __udivti3(n: u128, d: u128) -> u128;
fn __divti3(n: i128, d: i128) -> i128;
fn __umodti3(n: u128, d: u128) -> u128;
fn __modti3(n: i128, d: i128) -> i128;
fn __rust_u128_addo(a: u128, b: u128) -> (u128, bool);
fn __rust_i128_addo(a: i128, b: i128) -> (i128, bool);
fn __rust_u128_subo(a: u128, b: u128) -> (u128, bool);
fn __rust_i128_subo(a: i128, b: i128) -> (i128, bool);
fn __rust_u128_mulo(a: u128, b: u128) -> (u128, bool);
fn __rust_i128_mulo(a: i128, b: i128) -> (i128, bool);
// floats
fn __floattisf(i: i128) -> f32;
fn __floattidf(i: i128) -> f64;
fn __floatuntisf(i: u128) -> f32;
fn __floatuntidf(i: u128) -> f64;
fn __fixsfti(f: f32) -> i128;
fn __fixdfti(f: f64) -> i128;
fn __fixunssfti(f: f32) -> u128;
fn __fixunsdfti(f: f64) -> u128;
// allocator
// NOTE: These need to be mentioned here despite not being part of compiler_builtins because
// newer glibc resolve dlsym("malloc") to libc.so despite the override in the rustc binary to
// use jemalloc. Libraries opened with dlopen still get the jemalloc version, causing multiple
// allocators to be mixed, resulting in a crash.
fn calloc(nobj: size_t, size: size_t) -> *mut c_void;
#[cfg(unix)]
fn posix_memalign(memptr: *mut *mut c_void, align: size_t, size: size_t) -> c_int;
fn malloc(size: size_t) -> *mut c_void;
fn realloc(p: *mut c_void, size: size_t) -> *mut c_void;
fn free(p: *mut c_void) -> ();
}
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