8521530f49
This commit fixes a bug accidentally introduced in #285 where some lingering references remained to `#[cfg(thumbv6m)]` but this, since the historical revert, was renamed to `#[cfg(thumb_1)]`. This caused on the thumbv6m platform for the intrinsics to be accidentally omitted because the build script didn't actually compile them but the Rust code thought the C code was in use. After correcting the `#[cfg]` statements the CI configuration for the `thumb*` family of targets was all updated. The support for xargo testing was removed from `run.sh` since it had long since bitrotted, and the script was updated to simply build the intrinsics example to attempt to link for each of these targets. This in turn exposed the bug locally and allowed to confirm a fix once the `#[cfg]` statements were corrected. cc rust-lang/rust#60782
410 lines
8.3 KiB
Rust
410 lines
8.3 KiB
Rust
// By compiling this file we check that all the intrinsics we care about continue to be provided by
|
|
// the `compiler_builtins` crate regardless of the changes we make to it. If we, by mistake, stop
|
|
// compiling a C implementation and forget to implement that intrinsic in Rust, this file will fail
|
|
// to link due to the missing intrinsic (symbol).
|
|
|
|
#![allow(unused_features)]
|
|
#![cfg_attr(thumb, no_main)]
|
|
#![deny(dead_code)]
|
|
#![feature(asm)]
|
|
#![feature(compiler_builtins_lib)]
|
|
#![feature(lang_items)]
|
|
#![feature(start)]
|
|
#![feature(allocator_api)]
|
|
#![no_std]
|
|
|
|
extern crate panic_handler;
|
|
|
|
#[cfg(all(not(thumb), not(windows)))]
|
|
#[link(name = "c")]
|
|
extern {}
|
|
|
|
// Every function in this module maps will be lowered to an intrinsic by LLVM, if the platform
|
|
// doesn't have native support for the operation used in the function. ARM has a naming convention
|
|
// convention for its intrinsics that's different from other architectures; that's why some function
|
|
// have an additional comment: the function name is the ARM name for the intrinsic and the comment
|
|
// in the non-ARM name for the intrinsic.
|
|
mod intrinsics {
|
|
// trunccdfsf2
|
|
pub fn aeabi_d2f(x: f64) -> f32 {
|
|
// This is only implemented in C currently, so only test it there.
|
|
#[cfg(feature = "c")]
|
|
return x as f32;
|
|
#[cfg(not(feature = "c"))]
|
|
{
|
|
drop(x);
|
|
0.0
|
|
}
|
|
}
|
|
|
|
// fixdfsi
|
|
pub fn aeabi_d2i(x: f64) -> i32 {
|
|
x as i32
|
|
}
|
|
|
|
// fixdfdi
|
|
pub fn aeabi_d2l(x: f64) -> i64 {
|
|
x as i64
|
|
}
|
|
|
|
// fixunsdfsi
|
|
pub fn aeabi_d2uiz(x: f64) -> u32 {
|
|
x as u32
|
|
}
|
|
|
|
// fixunsdfdi
|
|
pub fn aeabi_d2ulz(x: f64) -> u64 {
|
|
x as u64
|
|
}
|
|
|
|
// adddf3
|
|
pub fn aeabi_dadd(a: f64, b: f64) -> f64 {
|
|
a + b
|
|
}
|
|
|
|
// eqdf2
|
|
pub fn aeabi_dcmpeq(a: f64, b: f64) -> bool {
|
|
a == b
|
|
}
|
|
|
|
// gtdf2
|
|
pub fn aeabi_dcmpgt(a: f64, b: f64) -> bool {
|
|
a > b
|
|
}
|
|
|
|
// ltdf2
|
|
pub fn aeabi_dcmplt(a: f64, b: f64) -> bool {
|
|
a < b
|
|
}
|
|
|
|
// divdf3
|
|
pub fn aeabi_ddiv(a: f64, b: f64) -> f64 {
|
|
a / b
|
|
}
|
|
|
|
// muldf3
|
|
pub fn aeabi_dmul(a: f64, b: f64) -> f64 {
|
|
a * b
|
|
}
|
|
|
|
// subdf3
|
|
pub fn aeabi_dsub(a: f64, b: f64) -> f64 {
|
|
a - b
|
|
}
|
|
|
|
// extendsfdf2
|
|
pub fn aeabi_f2d(x: f32) -> f64 {
|
|
x as f64
|
|
}
|
|
|
|
// fixsfsi
|
|
pub fn aeabi_f2iz(x: f32) -> i32 {
|
|
x as i32
|
|
}
|
|
|
|
// fixsfdi
|
|
pub fn aeabi_f2lz(x: f32) -> i64 {
|
|
x as i64
|
|
}
|
|
|
|
// fixunssfsi
|
|
pub fn aeabi_f2uiz(x: f32) -> u32 {
|
|
x as u32
|
|
}
|
|
|
|
// fixunssfdi
|
|
pub fn aeabi_f2ulz(x: f32) -> u64 {
|
|
x as u64
|
|
}
|
|
|
|
// addsf3
|
|
pub fn aeabi_fadd(a: f32, b: f32) -> f32 {
|
|
a + b
|
|
}
|
|
|
|
// eqsf2
|
|
pub fn aeabi_fcmpeq(a: f32, b: f32) -> bool {
|
|
a == b
|
|
}
|
|
|
|
// gtsf2
|
|
pub fn aeabi_fcmpgt(a: f32, b: f32) -> bool {
|
|
a > b
|
|
}
|
|
|
|
// ltsf2
|
|
pub fn aeabi_fcmplt(a: f32, b: f32) -> bool {
|
|
a < b
|
|
}
|
|
|
|
// divsf3
|
|
pub fn aeabi_fdiv(a: f32, b: f32) -> f32 {
|
|
a / b
|
|
}
|
|
|
|
// mulsf3
|
|
pub fn aeabi_fmul(a: f32, b: f32) -> f32 {
|
|
a * b
|
|
}
|
|
|
|
// subsf3
|
|
pub fn aeabi_fsub(a: f32, b: f32) -> f32 {
|
|
a - b
|
|
}
|
|
|
|
// floatsidf
|
|
pub fn aeabi_i2d(x: i32) -> f64 {
|
|
x as f64
|
|
}
|
|
|
|
// floatsisf
|
|
pub fn aeabi_i2f(x: i32) -> f32 {
|
|
x as f32
|
|
}
|
|
|
|
pub fn aeabi_idiv(a: i32, b: i32) -> i32 {
|
|
a.wrapping_div(b)
|
|
}
|
|
|
|
pub fn aeabi_idivmod(a: i32, b: i32) -> i32 {
|
|
a % b
|
|
}
|
|
|
|
// floatdidf
|
|
pub fn aeabi_l2d(x: i64) -> f64 {
|
|
x as f64
|
|
}
|
|
|
|
// floatdisf
|
|
pub fn aeabi_l2f(x: i64) -> f32 {
|
|
x as f32
|
|
}
|
|
|
|
// divdi3
|
|
pub fn aeabi_ldivmod(a: i64, b: i64) -> i64 {
|
|
a / b
|
|
}
|
|
|
|
// muldi3
|
|
pub fn aeabi_lmul(a: i64, b: i64) -> i64 {
|
|
a.wrapping_mul(b)
|
|
}
|
|
|
|
// floatunsidf
|
|
pub fn aeabi_ui2d(x: u32) -> f64 {
|
|
x as f64
|
|
}
|
|
|
|
// floatunsisf
|
|
pub fn aeabi_ui2f(x: u32) -> f32 {
|
|
x as f32
|
|
}
|
|
|
|
pub fn aeabi_uidiv(a: u32, b: u32) -> u32 {
|
|
a / b
|
|
}
|
|
|
|
pub fn aeabi_uidivmod(a: u32, b: u32) -> u32 {
|
|
a % b
|
|
}
|
|
|
|
// floatundidf
|
|
pub fn aeabi_ul2d(x: u64) -> f64 {
|
|
x as f64
|
|
}
|
|
|
|
// floatundisf
|
|
pub fn aeabi_ul2f(x: u64) -> f32 {
|
|
x as f32
|
|
}
|
|
|
|
// udivdi3
|
|
pub fn aeabi_uldivmod(a: u64, b: u64) -> u64 {
|
|
a * b
|
|
}
|
|
|
|
pub fn moddi3(a: i64, b: i64) -> i64 {
|
|
a % b
|
|
}
|
|
|
|
pub fn mulodi4(a: i64, b: i64) -> i64 {
|
|
a * b
|
|
}
|
|
|
|
pub fn umoddi3(a: u64, b: u64) -> u64 {
|
|
a % b
|
|
}
|
|
|
|
pub fn muloti4(a: u128, b: u128) -> Option<u128> {
|
|
a.checked_mul(b)
|
|
}
|
|
|
|
pub fn multi3(a: u128, b: u128) -> u128 {
|
|
a.wrapping_mul(b)
|
|
}
|
|
|
|
pub fn ashlti3(a: u128, b: usize) -> u128 {
|
|
a >> b
|
|
}
|
|
|
|
pub fn ashrti3(a: u128, b: usize) -> u128 {
|
|
a << b
|
|
}
|
|
|
|
pub fn lshrti3(a: i128, b: usize) -> i128 {
|
|
a >> b
|
|
}
|
|
|
|
pub fn udivti3(a: u128, b: u128) -> u128 {
|
|
a / b
|
|
}
|
|
|
|
pub fn umodti3(a: u128, b: u128) -> u128 {
|
|
a % b
|
|
}
|
|
|
|
pub fn divti3(a: i128, b: i128) -> i128 {
|
|
a / b
|
|
}
|
|
|
|
pub fn modti3(a: i128, b: i128) -> i128 {
|
|
a % b
|
|
}
|
|
|
|
pub fn udivsi3(a: u32, b: u32) -> u32 {
|
|
a / b
|
|
}
|
|
}
|
|
|
|
fn run() {
|
|
use intrinsics::*;
|
|
|
|
// A copy of "test::black_box". Used to prevent LLVM from optimizing away the intrinsics during LTO
|
|
fn bb<T>(dummy: T) -> T {
|
|
unsafe { asm!("" : : "r"(&dummy)) }
|
|
dummy
|
|
}
|
|
|
|
bb(aeabi_d2f(bb(2.)));
|
|
bb(aeabi_d2i(bb(2.)));
|
|
bb(aeabi_d2l(bb(2.)));
|
|
bb(aeabi_d2uiz(bb(2.)));
|
|
bb(aeabi_d2ulz(bb(2.)));
|
|
bb(aeabi_dadd(bb(2.), bb(3.)));
|
|
bb(aeabi_dcmpeq(bb(2.), bb(3.)));
|
|
bb(aeabi_dcmpgt(bb(2.), bb(3.)));
|
|
bb(aeabi_dcmplt(bb(2.), bb(3.)));
|
|
bb(aeabi_ddiv(bb(2.), bb(3.)));
|
|
bb(aeabi_dmul(bb(2.), bb(3.)));
|
|
bb(aeabi_dsub(bb(2.), bb(3.)));
|
|
bb(aeabi_f2d(bb(2.)));
|
|
bb(aeabi_f2iz(bb(2.)));
|
|
bb(aeabi_f2lz(bb(2.)));
|
|
bb(aeabi_f2uiz(bb(2.)));
|
|
bb(aeabi_f2ulz(bb(2.)));
|
|
bb(aeabi_fadd(bb(2.), bb(3.)));
|
|
bb(aeabi_fcmpeq(bb(2.), bb(3.)));
|
|
bb(aeabi_fcmpgt(bb(2.), bb(3.)));
|
|
bb(aeabi_fcmplt(bb(2.), bb(3.)));
|
|
bb(aeabi_fdiv(bb(2.), bb(3.)));
|
|
bb(aeabi_fmul(bb(2.), bb(3.)));
|
|
bb(aeabi_fsub(bb(2.), bb(3.)));
|
|
bb(aeabi_i2d(bb(2)));
|
|
bb(aeabi_i2f(bb(2)));
|
|
bb(aeabi_idiv(bb(2), bb(3)));
|
|
bb(aeabi_idivmod(bb(2), bb(3)));
|
|
bb(aeabi_l2d(bb(2)));
|
|
bb(aeabi_l2f(bb(2)));
|
|
bb(aeabi_ldivmod(bb(2), bb(3)));
|
|
bb(aeabi_lmul(bb(2), bb(3)));
|
|
bb(aeabi_ui2d(bb(2)));
|
|
bb(aeabi_ui2f(bb(2)));
|
|
bb(aeabi_uidiv(bb(2), bb(3)));
|
|
bb(aeabi_uidivmod(bb(2), bb(3)));
|
|
bb(aeabi_ul2d(bb(2)));
|
|
bb(aeabi_ul2f(bb(2)));
|
|
bb(aeabi_uldivmod(bb(2), bb(3)));
|
|
bb(moddi3(bb(2), bb(3)));
|
|
bb(mulodi4(bb(2), bb(3)));
|
|
bb(umoddi3(bb(2), bb(3)));
|
|
bb(muloti4(bb(2), bb(2)));
|
|
bb(multi3(bb(2), bb(2)));
|
|
bb(ashlti3(bb(2), bb(2)));
|
|
bb(ashrti3(bb(2), bb(2)));
|
|
bb(lshrti3(bb(2), bb(2)));
|
|
bb(udivti3(bb(2), bb(2)));
|
|
bb(umodti3(bb(2), bb(2)));
|
|
bb(divti3(bb(2), bb(2)));
|
|
bb(modti3(bb(2), bb(2)));
|
|
bb(udivsi3(bb(2), bb(2)));
|
|
|
|
something_with_a_dtor(&|| assert_eq!(bb(1), 1));
|
|
|
|
extern {
|
|
fn rust_begin_unwind();
|
|
}
|
|
// if bb(false) {
|
|
unsafe { rust_begin_unwind(); }
|
|
// }
|
|
}
|
|
|
|
fn something_with_a_dtor(f: &Fn()) {
|
|
struct A<'a>(&'a (Fn() + 'a));
|
|
|
|
impl<'a> Drop for A<'a> {
|
|
fn drop(&mut self) {
|
|
(self.0)();
|
|
}
|
|
}
|
|
let _a = A(f);
|
|
f();
|
|
}
|
|
|
|
#[cfg(not(thumb))]
|
|
#[start]
|
|
fn main(_: isize, _: *const *const u8) -> isize {
|
|
run();
|
|
0
|
|
}
|
|
|
|
#[cfg(thumb)]
|
|
#[no_mangle]
|
|
pub fn _start() -> ! {
|
|
run();
|
|
loop {}
|
|
}
|
|
|
|
#[cfg(windows)]
|
|
#[link(name = "kernel32")]
|
|
#[link(name = "msvcrt")]
|
|
extern {}
|
|
|
|
// ARM targets need these symbols
|
|
#[no_mangle]
|
|
pub fn __aeabi_unwind_cpp_pr0() {}
|
|
|
|
#[no_mangle]
|
|
pub fn __aeabi_unwind_cpp_pr1() {}
|
|
|
|
#[cfg(not(windows))]
|
|
#[allow(non_snake_case)]
|
|
#[no_mangle]
|
|
pub fn _Unwind_Resume() {}
|
|
|
|
#[cfg(not(windows))]
|
|
#[lang = "eh_personality"]
|
|
#[no_mangle]
|
|
pub extern "C" fn eh_personality() {}
|
|
|
|
#[cfg(all(windows, target_env = "gnu"))]
|
|
mod mingw_unwidning {
|
|
#[no_mangle]
|
|
pub fn rust_eh_personality() {}
|
|
#[no_mangle]
|
|
pub fn rust_eh_unwind_resume() {}
|
|
#[no_mangle]
|
|
pub fn rust_eh_register_frames() {}
|
|
#[no_mangle]
|
|
pub fn rust_eh_unregister_frames() {}
|
|
}
|