bjoernager/rust
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Merge commit '7d53619064' into sync_cg_clif-2023-02-09

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bjorn3 2023-02-09 12:38:16 +01:00
commit e25566e20b
26 changed files with 638 additions and 329 deletions
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38
compiler/rustc_codegen_cranelift/src/compiler_builtins.rs
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@ -1,14 +1,33 @@
#[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; $(fn $name:ident($($arg_name:ident: $arg_ty:ty),*) -> $ret_ty:ty;)*) => {
(
$register:ident;
$(
$(#[$attr:meta])?
fn $name:ident($($arg_name:ident: $arg_ty:ty),*) -> $ret_ty:ty;
)*
) => {
#[cfg(feature = "jit")]
#[allow(improper_ctypes)]
extern "C" {
$(fn $name($($arg_name: $arg_ty),*) -> $ret_ty;)*
$(
$(#[$attr])?
fn $name($($arg_name: $arg_ty),*) -> $ret_ty;
)*
}
#[cfg(feature = "jit")]
pub(crate) fn $register(builder: &mut cranelift_jit::JITBuilder) {
for (name, val) in [$((stringify!($name), $name as *const u8)),*] {
for (name, val) in [$($(#[$attr])? (stringify!($name), $name as *const u8)),*] {
builder.symbol(name, val);
}
}
@ -40,4 +59,17 @@ builtin_functions! {
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) -> ();
}