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Always use ar_archive_writer for import libs

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This commit is contained in:
Chris Denton 2024-08-16 19:32:22 +00:00
parent 27b93da8de
commit 0156eb57a1
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GPG Key ID: 713472F2F45627DE
10 changed files with 100 additions and 190 deletions
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4
Cargo.lock
View File

@ -205,9 +205,9 @@ dependencies = [
[[package]]
name = "ar_archive_writer"
version = "0.3.3"
version = "0.4.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "3f2bcb7cf51decfbbfc7ef476e28b0775b13e5eb1190f8b7df145cd53d4f4374"
checksum = "de11a9d32db3327f981143bdf699ade4d637c6887b13b97e6e91a9154666963c"
dependencies = [
"object 0.36.2",
]

83
compiler/rustc_codegen_cranelift/src/archive.rs
View File

@ -1,13 +1,6 @@
use std::borrow::Borrow;
use std::fs;
use std::path::Path;
use ar_archive_writer::{COFFShortExport, MachineTypes};
use rustc_codegen_ssa::back::archive::{
create_mingw_dll_import_lib, ArArchiveBuilder, ArchiveBuilder, ArchiveBuilderBuilder,
DEFAULT_OBJECT_READER,
ArArchiveBuilder, ArchiveBuilder, ArchiveBuilderBuilder, DEFAULT_OBJECT_READER,
};
use rustc_codegen_ssa::common::is_mingw_gnu_toolchain;
use rustc_session::Session;
pub(crate) struct ArArchiveBuilderBuilder;
@ -16,78 +9,4 @@ impl ArchiveBuilderBuilder for ArArchiveBuilderBuilder {
fn new_archive_builder<'a>(&self, sess: &'a Session) -> Box<dyn ArchiveBuilder + 'a> {
Box::new(ArArchiveBuilder::new(sess, &DEFAULT_OBJECT_READER))
}
fn create_dll_import_lib(
&self,
sess: &Session,
lib_name: &str,
import_name_and_ordinal_vector: Vec<(String, Option<u16>)>,
output_path: &Path,
) {
if is_mingw_gnu_toolchain(&sess.target) {
// The binutils linker used on -windows-gnu targets cannot read the import
// libraries generated by LLVM: in our attempts, the linker produced an .EXE
// that loaded but crashed with an AV upon calling one of the imported
// functions. Therefore, use binutils to create the import library instead,
// by writing a .DEF file to the temp dir and calling binutils's dlltool.
create_mingw_dll_import_lib(
sess,
lib_name,
import_name_and_ordinal_vector,
output_path,
);
} else {
let mut file =
match fs::OpenOptions::new().write(true).create_new(true).open(&output_path) {
Ok(file) => file,
Err(error) => {
sess.dcx().fatal(format!(
"failed to create import library file `{path}`: {error}",
path = output_path.display(),
));
}
};
let machine = match sess.target.arch.borrow() {
"x86" => MachineTypes::I386,
"x86_64" => MachineTypes::AMD64,
"arm" => MachineTypes::ARMNT,
"aarch64" => MachineTypes::ARM64,
_ => {
sess.dcx().fatal(format!(
"unsupported target architecture `{arch}`",
arch = sess.target.arch,
));
}
};
let exports = import_name_and_ordinal_vector
.iter()
.map(|(name, ordinal)| COFFShortExport {
name: name.to_string(),
ext_name: None,
symbol_name: None,
alias_target: None,
ordinal: ordinal.unwrap_or(0),
noname: ordinal.is_some(),
data: false,
private: false,
constant: false,
})
.collect::<Vec<_>>();
if let Err(error) = ar_archive_writer::write_import_library(
&mut file,
lib_name,
&exports,
machine,
!sess.target.is_like_msvc,
) {
sess.dcx().fatal(format!(
"failed to create import library `{path}`: `{error}`",
path = output_path.display(),
));
}
}
}
}

1
compiler/rustc_codegen_cranelift/src/lib.rs
View File

@ -12,7 +12,6 @@
#![warn(unused_lifetimes)]
// tidy-alphabetical-end
extern crate ar_archive_writer;
extern crate jobserver;
#[macro_use]
extern crate rustc_middle;

3
compiler/rustc_codegen_llvm/messages.ftl
View File

@ -5,9 +5,6 @@ codegen_llvm_dynamic_linking_with_lto =
.note = only 'staticlib', 'bin', and 'cdylib' outputs are supported with LTO
codegen_llvm_error_creating_import_library =
Error creating import library for {$lib_name}: {$error}
codegen_llvm_fixed_x18_invalid_arch = the `-Zfixed-x18` flag is not supported on the `{$arch}` architecture
codegen_llvm_from_llvm_diag = {$message}

94
compiler/rustc_codegen_llvm/src/back/archive.rs
View File

@ -5,17 +5,13 @@ use std::path::{Path, PathBuf};
use std::{io, mem, ptr, str};
use rustc_codegen_ssa::back::archive::{
create_mingw_dll_import_lib, try_extract_macho_fat_archive, ArArchiveBuilder,
ArchiveBuildFailure, ArchiveBuilder, ArchiveBuilderBuilder, ObjectReader, UnknownArchiveKind,
DEFAULT_OBJECT_READER,
try_extract_macho_fat_archive, ArArchiveBuilder, ArchiveBuildFailure, ArchiveBuilder,
ArchiveBuilderBuilder, ObjectReader, UnknownArchiveKind, DEFAULT_OBJECT_READER,
};
use rustc_codegen_ssa::common;
use rustc_session::Session;
use tracing::trace;
use crate::errors::ErrorCreatingImportLibrary;
use crate::llvm::archive_ro::{ArchiveRO, Child};
use crate::llvm::{self, ArchiveKind, LLVMMachineType, LLVMRustCOFFShortExport};
use crate::llvm::{self, ArchiveKind};
/// Helper for adding many files to an archive.
#[must_use = "must call build() to finish building the archive"]
@ -44,18 +40,6 @@ fn is_relevant_child(c: &Child<'_>) -> bool {
}
}
/// Map machine type strings to values of LLVM's MachineTypes enum.
fn llvm_machine_type(cpu: &str) -> LLVMMachineType {
match cpu {
"x86_64" => LLVMMachineType::AMD64,
"x86" => LLVMMachineType::I386,
"aarch64" => LLVMMachineType::ARM64,
"arm64ec" => LLVMMachineType::ARM64EC,
"arm" => LLVMMachineType::ARM,
_ => panic!("unsupported cpu type {cpu}"),
}
}
impl<'a> ArchiveBuilder for LlvmArchiveBuilder<'a> {
fn add_archive(
&mut self,
@ -116,78 +100,6 @@ impl ArchiveBuilderBuilder for LlvmArchiveBuilderBuilder {
Box::new(ArArchiveBuilder::new(sess, &LLVM_OBJECT_READER))
}
}
fn create_dll_import_lib(
&self,
sess: &Session,
lib_name: &str,
import_name_and_ordinal_vector: Vec<(String, Option<u16>)>,
output_path: &Path,
) {
if common::is_mingw_gnu_toolchain(&sess.target) {
// The binutils linker used on -windows-gnu targets cannot read the import
// libraries generated by LLVM: in our attempts, the linker produced an .EXE
// that loaded but crashed with an AV upon calling one of the imported
// functions. Therefore, use binutils to create the import library instead,
// by writing a .DEF file to the temp dir and calling binutils's dlltool.
create_mingw_dll_import_lib(
sess,
lib_name,
import_name_and_ordinal_vector,
output_path,
);
} else {
// we've checked for \0 characters in the library name already
let dll_name_z = CString::new(lib_name).unwrap();
let output_path_z = rustc_fs_util::path_to_c_string(&output_path);
trace!("invoking LLVMRustWriteImportLibrary");
trace!(" dll_name {:#?}", dll_name_z);
trace!(" output_path {}", output_path.display());
trace!(
" import names: {}",
import_name_and_ordinal_vector
.iter()
.map(|(name, _ordinal)| name.clone())
.collect::<Vec<_>>()
.join(", "),
);
// All import names are Rust identifiers and therefore cannot contain \0 characters.
// FIXME: when support for #[link_name] is implemented, ensure that the import names
// still don't contain any \0 characters. Also need to check that the names don't
// contain substrings like " @" or "NONAME" that are keywords or otherwise reserved
// in definition files.
let cstring_import_name_and_ordinal_vector: Vec<(CString, Option<u16>)> =
import_name_and_ordinal_vector
.into_iter()
.map(|(name, ordinal)| (CString::new(name).unwrap(), ordinal))
.collect();
let ffi_exports: Vec<LLVMRustCOFFShortExport> = cstring_import_name_and_ordinal_vector
.iter()
.map(|(name_z, ordinal)| LLVMRustCOFFShortExport::new(name_z.as_ptr(), *ordinal))
.collect();
let result = unsafe {
crate::llvm::LLVMRustWriteImportLibrary(
dll_name_z.as_ptr(),
output_path_z.as_ptr(),
ffi_exports.as_ptr(),
ffi_exports.len(),
llvm_machine_type(&sess.target.arch) as u16,
!sess.target.is_like_msvc,
)
};
if result == crate::llvm::LLVMRustResult::Failure {
sess.dcx().emit_fatal(ErrorCreatingImportLibrary {
lib_name,
error: llvm::last_error().unwrap_or("unknown LLVM error".to_string()),
});
}
}
}
}
// The object crate doesn't know how to get symbols for LLVM bitcode and COFF bigobj files.

7
compiler/rustc_codegen_llvm/src/errors.rs
View File

@ -39,13 +39,6 @@ pub(crate) enum PossibleFeature<'a> {
None,
}
#[derive(Diagnostic)]
#[diag(codegen_llvm_error_creating_import_library)]
pub(crate) struct ErrorCreatingImportLibrary<'a> {
pub lib_name: &'a str,
pub error: String,
}
#[derive(Diagnostic)]
#[diag(codegen_llvm_symbol_already_defined)]
pub(crate) struct SymbolAlreadyDefined<'a> {

2
compiler/rustc_codegen_ssa/Cargo.toml
View File

@ -5,7 +5,7 @@ edition = "2021"
[dependencies]
# tidy-alphabetical-start
ar_archive_writer = "0.3.3"
ar_archive_writer = "0.4.0"
arrayvec = { version = "0.7", default-features = false }
bitflags = "2.4.1"
cc = "1.0.90"

3
compiler/rustc_codegen_ssa/messages.ftl
View File

@ -32,6 +32,9 @@ codegen_ssa_dlltool_fail_import_library =
codegen_ssa_error_calling_dlltool =
Error calling dlltool '{$dlltool_path}': {$error}
codegen_ssa_error_creating_import_library =
Error creating import library for {$lib_name}: {$error}
codegen_ssa_error_creating_remark_dir = failed to create remark directory: {$error}
codegen_ssa_error_writing_def_file =

86
compiler/rustc_codegen_ssa/src/back/archive.rs
View File

@ -5,7 +5,9 @@ use std::fs::{self, File};
use std::io::{self, Write};
use std::path::{Path, PathBuf};
use ar_archive_writer::{write_archive_to_stream, ArchiveKind, NewArchiveMember};
use ar_archive_writer::{
write_archive_to_stream, ArchiveKind, COFFShortExport, MachineTypes, NewArchiveMember,
};
pub use ar_archive_writer::{ObjectReader, DEFAULT_OBJECT_READER};
use object::read::archive::ArchiveFile;
use object::read::macho::FatArch;
@ -14,11 +16,15 @@ use rustc_data_structures::memmap::Mmap;
use rustc_session::Session;
use rustc_span::symbol::Symbol;
use tempfile::Builder as TempFileBuilder;
use tracing::trace;
use super::metadata::search_for_section;
use crate::common;
// Re-exporting for rustc_codegen_llvm::back::archive
pub use crate::errors::{ArchiveBuildFailure, ExtractBundledLibsError, UnknownArchiveKind};
use crate::errors::{DlltoolFailImportLibrary, ErrorCallingDllTool, ErrorWritingDEFFile};
use crate::errors::{
DlltoolFailImportLibrary, ErrorCallingDllTool, ErrorCreatingImportLibrary, ErrorWritingDEFFile,
};
pub trait ArchiveBuilderBuilder {
fn new_archive_builder<'a>(&self, sess: &'a Session) -> Box<dyn ArchiveBuilder + 'a>;
@ -34,7 +40,81 @@ pub trait ArchiveBuilderBuilder {
lib_name: &str,
import_name_and_ordinal_vector: Vec<(String, Option<u16>)>,
output_path: &Path,
);
) {
if common::is_mingw_gnu_toolchain(&sess.target) {
// The binutils linker used on -windows-gnu targets cannot read the import
// libraries generated by LLVM: in our attempts, the linker produced an .EXE
// that loaded but crashed with an AV upon calling one of the imported
// functions. Therefore, use binutils to create the import library instead,
// by writing a .DEF file to the temp dir and calling binutils's dlltool.
create_mingw_dll_import_lib(
sess,
lib_name,
import_name_and_ordinal_vector,
output_path,
);
} else {
trace!("creating import library");
trace!(" dll_name {:#?}", lib_name);
trace!(" output_path {}", output_path.display());
trace!(
" import names: {}",
import_name_and_ordinal_vector
.iter()
.map(|(name, _ordinal)| name.clone())
.collect::<Vec<_>>()
.join(", "),
);
// All import names are Rust identifiers and therefore cannot contain \0 characters.
// FIXME: when support for #[link_name] is implemented, ensure that the import names
// still don't contain any \0 characters. Also need to check that the names don't
// contain substrings like " @" or "NONAME" that are keywords or otherwise reserved
// in definition files.
let mut file = match fs::File::create_new(&output_path) {
Ok(file) => file,
Err(error) => sess
.dcx()
.emit_fatal(ErrorCreatingImportLibrary { lib_name, error: error.to_string() }),
};
let exports = import_name_and_ordinal_vector
.iter()
.map(|(name, ordinal)| COFFShortExport {
name: name.to_string(),
ext_name: None,
symbol_name: None,
alias_target: None,
ordinal: ordinal.unwrap_or(0),
noname: ordinal.is_some(),
data: false,
private: false,
constant: false,
})
.collect::<Vec<_>>();
let machine = match &*sess.target.arch {
"x86_64" => MachineTypes::AMD64,
"x86" => MachineTypes::I386,
"aarch64" => MachineTypes::ARM64,
"arm64ec" => MachineTypes::ARM64EC,
"arm" => MachineTypes::ARMNT,
cpu => panic!("unsupported cpu type {cpu}"),
};
if let Err(error) = ar_archive_writer::write_import_library(
&mut file,
lib_name,
&exports,
machine,
!sess.target.is_like_msvc,
/*comdat=*/ false,
) {
sess.dcx()
.emit_fatal(ErrorCreatingImportLibrary { lib_name, error: error.to_string() });
}
}
}
fn extract_bundled_libs<'a>(
&'a self,

7
compiler/rustc_codegen_ssa/src/errors.rs
View File

@ -1060,3 +1060,10 @@ pub struct CompilerBuiltinsCannotCall {
pub caller: String,
pub callee: String,
}
#[derive(Diagnostic)]
#[diag(codegen_ssa_error_creating_import_library)]
pub(crate) struct ErrorCreatingImportLibrary<'a> {
pub lib_name: &'a str,
pub error: String,
}