2017-04-11 00:19:16 +08:00
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use std::env;
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2016-09-22 10:14:38 +08:00
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fn main() {
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2016-09-27 04:55:11 +08:00
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println!("cargo:rerun-if-changed=build.rs");
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let target = env::var("TARGET").unwrap();
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2018-11-22 04:55:06 +08:00
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let cwd = env::current_dir().unwrap();
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println!("cargo:compiler-rt={}", cwd.join("compiler-rt").display());
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2017-02-07 04:11:09 +08:00
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// Emscripten's runtime includes all the builtins
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if target.contains("emscripten") {
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return;
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}
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2018-05-12 15:19:28 +08:00
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// OpenBSD provides compiler_rt by default, use it instead of rebuilding it from source
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if target.contains("openbsd") {
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println!("cargo:rustc-link-search=native=/usr/lib");
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2018-07-16 12:17:38 +08:00
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println!("cargo:rustc-link-lib=compiler_rt");
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2018-05-12 15:19:28 +08:00
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return;
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}
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2018-11-21 16:37:57 +08:00
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// Forcibly enable memory intrinsics on wasm32 & SGX as we don't have a libc to
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2017-10-25 08:03:39 +08:00
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// provide them.
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2019-05-15 05:33:08 +08:00
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if (target.contains("wasm32") && !target.contains("wasi"))
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|| (target.contains("sgx") && target.contains("fortanix"))
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{
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2017-10-25 08:03:39 +08:00
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println!("cargo:rustc-cfg=feature=\"mem\"");
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}
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2016-09-27 04:55:11 +08:00
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// NOTE we are going to assume that llvm-target, what determines our codegen option, matches the
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// target triple. This is usually correct for our built-in targets but can break in presence of
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// custom targets, which can have arbitrary names.
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let llvm_target = target.split('-').collect::<Vec<_>>();
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2017-07-08 02:20:04 +08:00
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// Build missing intrinsics from compiler-rt C source code. If we're
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// mangling names though we assume that we're also in test mode so we don't
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// build anything and we rely on the upstream implementation of compiler-rt
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// functions
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2017-10-25 08:03:39 +08:00
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if !cfg!(feature = "mangled-names") && cfg!(feature = "c") {
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2019-05-15 05:29:29 +08:00
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// Don't use a C compiler for these targets:
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//
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// * wasm32 - clang 8 for wasm is somewhat hard to come by and it's
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// unlikely that the C is really that much better than our own Rust.
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// * nvptx - everything is bitcode, not compatible with mixed C/Rust
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// * riscv - the rust-lang/rust distribution container doesn't have a C
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// compiler nor is cc-rs ready for compilation to riscv (at this
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// time). This can probably be removed in the future
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if !target.contains("wasm32") && !target.contains("nvptx") && !target.starts_with("riscv") {
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2017-10-25 08:03:39 +08:00
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#[cfg(feature = "c")]
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c::compile(&llvm_target);
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}
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2017-07-08 02:20:04 +08:00
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}
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2016-09-27 04:55:11 +08:00
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2017-04-11 00:19:16 +08:00
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// To compile intrinsics.rs for thumb targets, where there is no libc
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if llvm_target[0].starts_with("thumb") {
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println!("cargo:rustc-cfg=thumb")
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}
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2016-09-27 04:55:11 +08:00
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2019-03-08 03:24:15 +08:00
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// compiler-rt `cfg`s away some intrinsics for thumbv6m and thumbv8m.base because
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// these targets do not have full Thumb-2 support but only original Thumb-1.
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// We have to cfg our code accordingly.
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if llvm_target[0] == "thumbv6m" || llvm_target[0] == "thumbv8m.base" {
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println!("cargo:rustc-cfg=thumb_1")
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2017-04-11 00:19:16 +08:00
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}
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2016-11-01 00:03:46 +08:00
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// Only emit the ARM Linux atomic emulation on pre-ARMv6 architectures.
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2017-12-26 23:01:02 +08:00
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if llvm_target[0] == "armv4t" || llvm_target[0] == "armv5te" {
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println!("cargo:rustc-cfg=kernel_user_helpers")
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2016-11-01 00:03:46 +08:00
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}
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2017-04-11 00:19:16 +08:00
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}
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2016-09-27 04:55:11 +08:00
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2017-04-11 00:19:16 +08:00
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#[cfg(feature = "c")]
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mod c {
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2017-09-23 12:30:12 +08:00
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extern crate cc;
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2016-09-27 04:55:11 +08:00
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2017-04-11 00:19:16 +08:00
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use std::collections::BTreeMap;
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use std::env;
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use std::path::Path;
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2016-09-27 04:55:11 +08:00
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2017-04-11 00:19:16 +08:00
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struct Sources {
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// SYMBOL -> PATH TO SOURCE
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map: BTreeMap<&'static str, &'static str>,
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}
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2016-09-27 04:55:11 +08:00
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2017-04-11 00:19:16 +08:00
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impl Sources {
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fn new() -> Sources {
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2019-05-15 05:33:08 +08:00
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Sources {
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map: BTreeMap::new(),
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}
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2017-04-11 00:19:16 +08:00
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}
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2019-05-16 03:57:36 +08:00
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fn extend(&mut self, sources: &[(&'static str, &'static str)]) {
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2017-04-11 00:19:16 +08:00
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// NOTE Some intrinsics have both a generic implementation (e.g.
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// `floatdidf.c`) and an arch optimized implementation
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// (`x86_64/floatdidf.c`). In those cases, we keep the arch optimized
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// implementation and discard the generic implementation. If we don't
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// and keep both implementations, the linker will yell at us about
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// duplicate symbols!
|
2019-05-16 03:57:36 +08:00
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for (symbol, src) in sources {
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2017-04-11 00:19:16 +08:00
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if src.contains("/") {
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// Arch-optimized implementation (preferred)
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self.map.insert(symbol, src);
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} else {
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// Generic implementation
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if !self.map.contains_key(symbol) {
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self.map.insert(symbol, src);
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}
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}
|
2017-02-20 04:49:59 +08:00
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|
|
}
|
2017-04-11 00:19:16 +08:00
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|
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}
|
2016-09-27 04:55:11 +08:00
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|
2017-04-11 00:19:16 +08:00
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fn remove(&mut self, symbols: &[&str]) {
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for symbol in symbols {
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self.map.remove(*symbol).unwrap();
|
2016-09-27 04:55:11 +08:00
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}
|
2017-04-11 00:19:16 +08:00
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|
|
}
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|
|
|
}
|
2017-02-20 04:49:59 +08:00
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|
2017-04-11 00:19:16 +08:00
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/// Compile intrinsics from the compiler-rt C source code
|
2017-04-11 00:29:31 +08:00
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pub fn compile(llvm_target: &[&str]) {
|
2017-04-11 00:19:16 +08:00
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let target_arch = env::var("CARGO_CFG_TARGET_ARCH").unwrap();
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let target_env = env::var("CARGO_CFG_TARGET_ENV").unwrap();
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let target_os = env::var("CARGO_CFG_TARGET_OS").unwrap();
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let target_vendor = env::var("CARGO_CFG_TARGET_VENDOR").unwrap();
|
2017-09-23 12:30:12 +08:00
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let cfg = &mut cc::Build::new();
|
2017-09-07 13:49:34 +08:00
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cfg.warnings(false);
|
2017-04-11 00:19:16 +08:00
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if target_env == "msvc" {
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// Don't pull in extra libraries on MSVC
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cfg.flag("/Zl");
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// Emulate C99 and C++11's __func__ for MSVC prior to 2013 CTP
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cfg.define("__func__", Some("__FUNCTION__"));
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} else {
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|
// Turn off various features of gcc and such, mostly copying
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// compiler-rt's build system already
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cfg.flag("-fno-builtin");
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cfg.flag("-fvisibility=hidden");
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cfg.flag("-ffreestanding");
|
2017-11-28 05:13:22 +08:00
|
|
|
// Avoid the following warning appearing once **per file**:
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|
|
|
// clang: warning: optimization flag '-fomit-frame-pointer' is not supported for target 'armv7' [-Wignored-optimization-argument]
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//
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|
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// Note that compiler-rt's build system also checks
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|
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//
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// `check_cxx_compiler_flag(-fomit-frame-pointer COMPILER_RT_HAS_FOMIT_FRAME_POINTER_FLAG)`
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//
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|
|
|
// in https://github.com/rust-lang/compiler-rt/blob/c8fbcb3/cmake/config-ix.cmake#L19.
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|
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cfg.flag_if_supported("-fomit-frame-pointer");
|
2017-04-11 00:19:16 +08:00
|
|
|
cfg.define("VISIBILITY_HIDDEN", None);
|
|
|
|
}
|
2017-02-20 04:49:59 +08:00
|
|
|
|
2017-04-11 00:19:16 +08:00
|
|
|
let mut sources = Sources::new();
|
2019-05-15 05:33:08 +08:00
|
|
|
sources.extend(&[
|
2019-05-16 03:57:36 +08:00
|
|
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("__absvdi2", "absvdi2.c"),
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|
|
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("__absvsi2", "absvsi2.c"),
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("__addvdi3", "addvdi3.c"),
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("__addvsi3", "addvsi3.c"),
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("apple_versioning", "apple_versioning.c"),
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|
|
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("__clzdi2", "clzdi2.c"),
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|
|
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("__clzsi2", "clzsi2.c"),
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|
|
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("__cmpdi2", "cmpdi2.c"),
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|
|
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("__ctzdi2", "ctzdi2.c"),
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|
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("__ctzsi2", "ctzsi2.c"),
|
|
|
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("__divdc3", "divdc3.c"),
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|
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("__divsc3", "divsc3.c"),
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|
|
|
("__divxc3", "divxc3.c"),
|
|
|
|
("__extendhfsf2", "extendhfsf2.c"),
|
|
|
|
("__int_util", "int_util.c"),
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|
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("__muldc3", "muldc3.c"),
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|
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("__mulsc3", "mulsc3.c"),
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|
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("__mulvdi3", "mulvdi3.c"),
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|
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("__mulvsi3", "mulvsi3.c"),
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|
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("__mulxc3", "mulxc3.c"),
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|
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("__negdf2", "negdf2.c"),
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("__negdi2", "negdi2.c"),
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("__negsf2", "negsf2.c"),
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("__negvdi2", "negvdi2.c"),
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("__negvsi2", "negvsi2.c"),
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("__paritydi2", "paritydi2.c"),
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("__paritysi2", "paritysi2.c"),
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|
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("__popcountdi2", "popcountdi2.c"),
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("__popcountsi2", "popcountsi2.c"),
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("__powixf2", "powixf2.c"),
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("__subvdi3", "subvdi3.c"),
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("__subvsi3", "subvsi3.c"),
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("__truncdfhf2", "truncdfhf2.c"),
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("__truncdfsf2", "truncdfsf2.c"),
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|
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("__truncsfhf2", "truncsfhf2.c"),
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|
|
("__ucmpdi2", "ucmpdi2.c"),
|
2019-05-15 05:33:08 +08:00
|
|
|
]);
|
2017-04-11 00:19:16 +08:00
|
|
|
|
2017-07-04 05:57:42 +08:00
|
|
|
// When compiling in rustbuild (the rust-lang/rust repo) this library
|
|
|
|
// also needs to satisfy intrinsics that jemalloc or C in general may
|
|
|
|
// need, so include a few more that aren't typically needed by
|
|
|
|
// LLVM/Rust.
|
2017-09-13 07:09:43 +08:00
|
|
|
if cfg!(feature = "rustbuild") {
|
2019-05-16 03:57:36 +08:00
|
|
|
sources.extend(&[("__ffsdi2", "ffsdi2.c")]);
|
2017-09-13 07:09:43 +08:00
|
|
|
}
|
2017-07-04 05:57:42 +08:00
|
|
|
|
2017-09-18 06:24:36 +08:00
|
|
|
// On iOS and 32-bit OSX these are all just empty intrinsics, no need to
|
|
|
|
// include them.
|
|
|
|
if target_os != "ios" && (target_vendor != "apple" || target_arch != "x86") {
|
2019-05-15 05:33:08 +08:00
|
|
|
sources.extend(&[
|
2019-05-16 03:57:36 +08:00
|
|
|
("__absvti2", "absvti2.c"),
|
|
|
|
("__addvti3", "addvti3.c"),
|
|
|
|
("__clzti2", "clzti2.c"),
|
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|
|
("__cmpti2", "cmpti2.c"),
|
|
|
|
("__ctzti2", "ctzti2.c"),
|
|
|
|
("__ffsti2", "ffsti2.c"),
|
|
|
|
("__mulvti3", "mulvti3.c"),
|
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|
|
("__negti2", "negti2.c"),
|
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|
|
("__negvti2", "negvti2.c"),
|
|
|
|
("__parityti2", "parityti2.c"),
|
|
|
|
("__popcountti2", "popcountti2.c"),
|
|
|
|
("__subvti3", "subvti3.c"),
|
|
|
|
("__ucmpti2", "ucmpti2.c"),
|
2019-05-15 05:33:08 +08:00
|
|
|
]);
|
2017-04-11 00:19:16 +08:00
|
|
|
}
|
2016-09-27 04:55:11 +08:00
|
|
|
|
2017-04-11 00:19:16 +08:00
|
|
|
if target_vendor == "apple" {
|
2019-05-15 05:33:08 +08:00
|
|
|
sources.extend(&[
|
2019-05-16 03:57:36 +08:00
|
|
|
("atomic_flag_clear", "atomic_flag_clear.c"),
|
|
|
|
("atomic_flag_clear_explicit", "atomic_flag_clear_explicit.c"),
|
|
|
|
("atomic_flag_test_and_set", "atomic_flag_test_and_set.c"),
|
|
|
|
(
|
|
|
|
"atomic_flag_test_and_set_explicit",
|
|
|
|
"atomic_flag_test_and_set_explicit.c",
|
|
|
|
),
|
|
|
|
("atomic_signal_fence", "atomic_signal_fence.c"),
|
|
|
|
("atomic_thread_fence", "atomic_thread_fence.c"),
|
2019-05-15 05:33:08 +08:00
|
|
|
]);
|
2017-04-11 00:19:16 +08:00
|
|
|
}
|
2016-09-27 04:55:11 +08:00
|
|
|
|
2017-04-11 00:19:16 +08:00
|
|
|
if target_env == "msvc" {
|
|
|
|
if target_arch == "x86_64" {
|
2019-05-16 03:57:36 +08:00
|
|
|
sources.extend(&[
|
|
|
|
("__floatdisf", "x86_64/floatdisf.c"),
|
|
|
|
("__floatdixf", "x86_64/floatdixf.c"),
|
|
|
|
]);
|
2017-04-11 00:19:16 +08:00
|
|
|
}
|
|
|
|
} else {
|
2017-06-24 12:09:24 +08:00
|
|
|
// None of these seem to be used on x86_64 windows, and they've all
|
|
|
|
// got the wrong ABI anyway, so we want to avoid them.
|
|
|
|
if target_os != "windows" {
|
|
|
|
if target_arch == "x86_64" {
|
2019-05-15 05:33:08 +08:00
|
|
|
sources.extend(&[
|
2019-05-16 03:57:36 +08:00
|
|
|
("__floatdisf", "x86_64/floatdisf.c"),
|
|
|
|
("__floatdixf", "x86_64/floatdixf.c"),
|
|
|
|
("__floatundidf", "x86_64/floatundidf.S"),
|
|
|
|
("__floatundisf", "x86_64/floatundisf.S"),
|
|
|
|
("__floatundixf", "x86_64/floatundixf.S"),
|
2019-05-15 05:33:08 +08:00
|
|
|
]);
|
2017-06-24 12:09:24 +08:00
|
|
|
}
|
2017-02-20 04:49:59 +08:00
|
|
|
}
|
2016-09-27 04:55:11 +08:00
|
|
|
|
2017-04-11 00:19:16 +08:00
|
|
|
if target_arch == "x86" {
|
2019-05-15 05:33:08 +08:00
|
|
|
sources.extend(&[
|
2019-05-16 03:57:36 +08:00
|
|
|
("__ashldi3", "i386/ashldi3.S"),
|
|
|
|
("__ashrdi3", "i386/ashrdi3.S"),
|
|
|
|
("__divdi3", "i386/divdi3.S"),
|
|
|
|
("__floatdidf", "i386/floatdidf.S"),
|
|
|
|
("__floatdisf", "i386/floatdisf.S"),
|
|
|
|
("__floatdixf", "i386/floatdixf.S"),
|
|
|
|
("__floatundidf", "i386/floatundidf.S"),
|
|
|
|
("__floatundisf", "i386/floatundisf.S"),
|
|
|
|
("__floatundixf", "i386/floatundixf.S"),
|
|
|
|
("__lshrdi3", "i386/lshrdi3.S"),
|
|
|
|
("__moddi3", "i386/moddi3.S"),
|
|
|
|
("__muldi3", "i386/muldi3.S"),
|
|
|
|
("__udivdi3", "i386/udivdi3.S"),
|
|
|
|
("__umoddi3", "i386/umoddi3.S"),
|
2019-05-15 05:33:08 +08:00
|
|
|
]);
|
2017-02-20 04:49:59 +08:00
|
|
|
}
|
2017-04-11 00:19:16 +08:00
|
|
|
}
|
2016-09-27 04:55:11 +08:00
|
|
|
|
2018-07-06 02:20:34 +08:00
|
|
|
if target_arch == "arm" && target_os != "ios" && target_env != "msvc" {
|
2019-05-15 05:33:08 +08:00
|
|
|
sources.extend(&[
|
2019-05-16 03:57:36 +08:00
|
|
|
("__aeabi_div0", "arm/aeabi_div0.c"),
|
|
|
|
("__aeabi_drsub", "arm/aeabi_drsub.c"),
|
|
|
|
("__aeabi_frsub", "arm/aeabi_frsub.c"),
|
|
|
|
("__bswapdi2", "arm/bswapdi2.S"),
|
|
|
|
("__bswapsi2", "arm/bswapsi2.S"),
|
|
|
|
("__clzdi2", "arm/clzdi2.S"),
|
|
|
|
("__clzsi2", "arm/clzsi2.S"),
|
|
|
|
("__divmodsi4", "arm/divmodsi4.S"),
|
|
|
|
("__divsi3", "arm/divsi3.S"),
|
|
|
|
("__modsi3", "arm/modsi3.S"),
|
|
|
|
("__switch16", "arm/switch16.S"),
|
|
|
|
("__switch32", "arm/switch32.S"),
|
|
|
|
("__switch8", "arm/switch8.S"),
|
|
|
|
("__switchu8", "arm/switchu8.S"),
|
|
|
|
("__sync_synchronize", "arm/sync_synchronize.S"),
|
|
|
|
("__udivmodsi4", "arm/udivmodsi4.S"),
|
|
|
|
("__udivsi3", "arm/udivsi3.S"),
|
|
|
|
("__umodsi3", "arm/umodsi3.S"),
|
2019-05-15 05:33:08 +08:00
|
|
|
]);
|
2018-01-19 16:04:57 +08:00
|
|
|
|
2019-02-03 02:52:41 +08:00
|
|
|
if target_os == "freebsd" {
|
2019-05-16 03:57:36 +08:00
|
|
|
sources.extend(&[("__clear_cache", "clear_cache.c")]);
|
2019-02-03 02:52:41 +08:00
|
|
|
}
|
2019-03-13 23:19:30 +08:00
|
|
|
|
2018-01-20 02:27:25 +08:00
|
|
|
// First of all aeabi_cdcmp and aeabi_cfcmp are never called by LLVM.
|
2018-01-19 16:04:57 +08:00
|
|
|
// Second are little-endian only, so build fail on big-endian targets.
|
|
|
|
// Temporally workaround: exclude these files for big-endian targets.
|
2019-05-15 05:33:08 +08:00
|
|
|
if !llvm_target[0].starts_with("thumbeb") && !llvm_target[0].starts_with("armeb") {
|
|
|
|
sources.extend(&[
|
2019-05-16 03:57:36 +08:00
|
|
|
("__aeabi_cdcmp", "arm/aeabi_cdcmp.S"),
|
|
|
|
("__aeabi_cdcmpeq_check_nan", "arm/aeabi_cdcmpeq_check_nan.c"),
|
|
|
|
("__aeabi_cfcmp", "arm/aeabi_cfcmp.S"),
|
|
|
|
("__aeabi_cfcmpeq_check_nan", "arm/aeabi_cfcmpeq_check_nan.c"),
|
2019-05-15 05:33:08 +08:00
|
|
|
]);
|
2018-01-20 02:27:25 +08:00
|
|
|
}
|
2017-04-11 00:19:16 +08:00
|
|
|
}
|
|
|
|
|
|
|
|
if llvm_target[0] == "armv7" {
|
2019-05-15 05:33:08 +08:00
|
|
|
sources.extend(&[
|
2019-05-16 03:57:36 +08:00
|
|
|
("__sync_fetch_and_add_4", "arm/sync_fetch_and_add_4.S"),
|
|
|
|
("__sync_fetch_and_add_8", "arm/sync_fetch_and_add_8.S"),
|
|
|
|
("__sync_fetch_and_and_4", "arm/sync_fetch_and_and_4.S"),
|
|
|
|
("__sync_fetch_and_and_8", "arm/sync_fetch_and_and_8.S"),
|
|
|
|
("__sync_fetch_and_max_4", "arm/sync_fetch_and_max_4.S"),
|
|
|
|
("__sync_fetch_and_max_8", "arm/sync_fetch_and_max_8.S"),
|
|
|
|
("__sync_fetch_and_min_4", "arm/sync_fetch_and_min_4.S"),
|
|
|
|
("__sync_fetch_and_min_8", "arm/sync_fetch_and_min_8.S"),
|
|
|
|
("__sync_fetch_and_nand_4", "arm/sync_fetch_and_nand_4.S"),
|
|
|
|
("__sync_fetch_and_nand_8", "arm/sync_fetch_and_nand_8.S"),
|
|
|
|
("__sync_fetch_and_or_4", "arm/sync_fetch_and_or_4.S"),
|
|
|
|
("__sync_fetch_and_or_8", "arm/sync_fetch_and_or_8.S"),
|
|
|
|
("__sync_fetch_and_sub_4", "arm/sync_fetch_and_sub_4.S"),
|
|
|
|
("__sync_fetch_and_sub_8", "arm/sync_fetch_and_sub_8.S"),
|
|
|
|
("__sync_fetch_and_umax_4", "arm/sync_fetch_and_umax_4.S"),
|
|
|
|
("__sync_fetch_and_umax_8", "arm/sync_fetch_and_umax_8.S"),
|
|
|
|
("__sync_fetch_and_umin_4", "arm/sync_fetch_and_umin_4.S"),
|
|
|
|
("__sync_fetch_and_umin_8", "arm/sync_fetch_and_umin_8.S"),
|
|
|
|
("__sync_fetch_and_xor_4", "arm/sync_fetch_and_xor_4.S"),
|
|
|
|
("__sync_fetch_and_xor_8", "arm/sync_fetch_and_xor_8.S"),
|
2019-05-15 05:33:08 +08:00
|
|
|
]);
|
2017-04-11 00:19:16 +08:00
|
|
|
}
|
|
|
|
|
|
|
|
if llvm_target.last().unwrap().ends_with("eabihf") {
|
2019-05-15 05:33:08 +08:00
|
|
|
if !llvm_target[0].starts_with("thumbv7em")
|
|
|
|
&& !llvm_target[0].starts_with("thumbv8m.main")
|
|
|
|
{
|
2019-03-08 03:30:39 +08:00
|
|
|
// The FPU option chosen for these architectures in cc-rs, ie:
|
|
|
|
// -mfpu=fpv4-sp-d16 for thumbv7em
|
|
|
|
// -mfpu=fpv5-sp-d16 for thumbv8m.main
|
|
|
|
// do not support double precision floating points conversions so the files
|
|
|
|
// that include such instructions are not included for these targets.
|
2019-05-15 05:33:08 +08:00
|
|
|
sources.extend(&[
|
2019-05-16 03:57:36 +08:00
|
|
|
("__fixdfsivfp", "arm/fixdfsivfp.S"),
|
|
|
|
("__fixunsdfsivfp", "arm/fixunsdfsivfp.S"),
|
|
|
|
("__floatsidfvfp", "arm/floatsidfvfp.S"),
|
|
|
|
("__floatunssidfvfp", "arm/floatunssidfvfp.S"),
|
2019-05-15 05:33:08 +08:00
|
|
|
]);
|
2017-02-20 04:49:59 +08:00
|
|
|
}
|
2016-09-27 04:55:11 +08:00
|
|
|
|
2019-05-15 05:33:08 +08:00
|
|
|
sources.extend(&[
|
2019-05-16 03:57:36 +08:00
|
|
|
("__fixsfsivfp", "arm/fixsfsivfp.S"),
|
|
|
|
("__fixunssfsivfp", "arm/fixunssfsivfp.S"),
|
|
|
|
("__floatsisfvfp", "arm/floatsisfvfp.S"),
|
|
|
|
("__floatunssisfvfp", "arm/floatunssisfvfp.S"),
|
|
|
|
("__floatunssisfvfp", "arm/floatunssisfvfp.S"),
|
|
|
|
("__restore_vfp_d8_d15_regs", "arm/restore_vfp_d8_d15_regs.S"),
|
|
|
|
("__save_vfp_d8_d15_regs", "arm/save_vfp_d8_d15_regs.S"),
|
|
|
|
("__negdf2vfp", "arm/negdf2vfp.S"),
|
|
|
|
("__negsf2vfp", "arm/negsf2vfp.S"),
|
2019-05-15 05:33:08 +08:00
|
|
|
]);
|
2016-09-27 04:55:11 +08:00
|
|
|
}
|
|
|
|
|
2017-04-11 00:19:16 +08:00
|
|
|
if target_arch == "aarch64" {
|
2019-05-15 05:33:08 +08:00
|
|
|
sources.extend(&[
|
2019-05-16 03:57:36 +08:00
|
|
|
("__comparetf2", "comparetf2.c"),
|
|
|
|
("__extenddftf2", "extenddftf2.c"),
|
|
|
|
("__extendsftf2", "extendsftf2.c"),
|
|
|
|
("__fixtfdi", "fixtfdi.c"),
|
|
|
|
("__fixtfsi", "fixtfsi.c"),
|
|
|
|
("__fixtfti", "fixtfti.c"),
|
|
|
|
("__fixunstfdi", "fixunstfdi.c"),
|
|
|
|
("__fixunstfsi", "fixunstfsi.c"),
|
|
|
|
("__fixunstfti", "fixunstfti.c"),
|
|
|
|
("__floatditf", "floatditf.c"),
|
|
|
|
("__floatsitf", "floatsitf.c"),
|
|
|
|
("__floatunditf", "floatunditf.c"),
|
|
|
|
("__floatunsitf", "floatunsitf.c"),
|
|
|
|
("__trunctfdf2", "trunctfdf2.c"),
|
|
|
|
("__trunctfsf2", "trunctfsf2.c"),
|
2019-05-15 05:33:08 +08:00
|
|
|
]);
|
2018-07-17 07:37:35 +08:00
|
|
|
|
|
|
|
if target_os != "windows" {
|
2019-05-16 03:57:36 +08:00
|
|
|
sources.extend(&[("__multc3", "multc3.c")]);
|
2018-07-17 07:37:35 +08:00
|
|
|
}
|
2017-04-11 00:19:16 +08:00
|
|
|
}
|
2016-09-27 04:55:11 +08:00
|
|
|
|
2017-04-11 00:19:16 +08:00
|
|
|
// Remove the assembly implementations that won't compile for the target
|
2019-03-08 03:24:15 +08:00
|
|
|
if llvm_target[0] == "thumbv6m" || llvm_target[0] == "thumbv8m.base" {
|
2019-05-16 03:57:36 +08:00
|
|
|
let mut to_remove = Vec::new();
|
|
|
|
for (k, v) in sources.map.iter() {
|
|
|
|
if v.ends_with(".S") {
|
|
|
|
to_remove.push(*k);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
sources.remove(&to_remove);
|
2017-04-11 00:19:16 +08:00
|
|
|
|
|
|
|
// But use some generic implementations where possible
|
2019-05-16 03:57:36 +08:00
|
|
|
sources.extend(&[("__clzdi2", "clzdi2.c"), ("__clzsi2", "clzsi2.c")])
|
2017-04-11 00:19:16 +08:00
|
|
|
}
|
2016-09-27 04:55:11 +08:00
|
|
|
|
2017-04-11 00:19:16 +08:00
|
|
|
if llvm_target[0] == "thumbv7m" || llvm_target[0] == "thumbv7em" {
|
2019-05-16 03:57:36 +08:00
|
|
|
sources.remove(&["__aeabi_cdcmp", "__aeabi_cfcmp"]);
|
2017-04-11 00:19:16 +08:00
|
|
|
}
|
|
|
|
|
2017-09-13 07:09:43 +08:00
|
|
|
// When compiling in rustbuild (the rust-lang/rust repo) this build
|
|
|
|
// script runs from a directory other than this root directory.
|
|
|
|
let root = if cfg!(feature = "rustbuild") {
|
2017-04-11 00:19:16 +08:00
|
|
|
Path::new("../../libcompiler_builtins")
|
|
|
|
} else {
|
|
|
|
Path::new(".")
|
|
|
|
};
|
|
|
|
|
2017-04-11 00:23:03 +08:00
|
|
|
let src_dir = root.join("compiler-rt/lib/builtins");
|
2019-05-16 03:57:36 +08:00
|
|
|
for (sym, src) in sources.map.iter() {
|
2017-04-11 00:19:16 +08:00
|
|
|
let src = src_dir.join(src);
|
|
|
|
cfg.file(&src);
|
|
|
|
println!("cargo:rerun-if-changed={}", src.display());
|
2019-05-16 03:57:36 +08:00
|
|
|
println!("cargo:rustc-cfg={}=\"optimized-c\"", sym);
|
2017-04-11 00:19:16 +08:00
|
|
|
}
|
|
|
|
|
|
|
|
cfg.compile("libcompiler-rt.a");
|
2016-09-27 04:55:11 +08:00
|
|
|
}
|
2016-09-22 10:14:38 +08:00
|
|
|
}
|