compiler/rustc_llvm/src/lib.rs

   1 #![deny(rustc::untranslatable_diagnostic)]
   2 #![deny(rustc::diagnostic_outside_of_impl)]
   3 #![doc(html_root_url = "https://doc.rust-lang.org/nightly/nightly-rustc/")]
   4
   5 // NOTE: This crate only exists to allow linking on mingw targets.
   6
   7 use libc::{c_char, size_t};
   8 use std::cell::RefCell;
   9 use std::slice;
  10
  11 #[repr(C)]
  12 pub struct RustString {
  13     pub bytes: RefCell<Vec<u8>>,
  14 }
  15
  16 impl RustString {
  17     pub fn len(&self) -> usize {
  18         self.bytes.borrow().len()
  19     }
  20
  21     pub fn is_empty(&self) -> bool {
  22         self.bytes.borrow().is_empty()
  23     }
  24 }
  25
  26 /// Appending to a Rust string -- used by RawRustStringOstream.
  27 #[no_mangle]
  28 pub unsafe extern "C" fn LLVMRustStringWriteImpl(
  29     sr: &RustString,
  30     ptr: *const c_char,
  31     size: size_t,
  32 ) {
  33     let slice = slice::from_raw_parts(ptr as *const u8, size as usize);
  34
  35     sr.bytes.borrow_mut().extend_from_slice(slice);
  36 }
  37
  38 /// Initialize targets enabled by the build script via `cfg(llvm_component = "...")`.
  39 /// N.B., this function can't be moved to `rustc_codegen_llvm` because of the `cfg`s.
  40 pub fn initialize_available_targets() {
  41     macro_rules! init_target(
  42         ($cfg:meta, $($method:ident),*) => { {
  43             #[cfg($cfg)]
  44             fn init() {
  45                 extern "C" {
  46                     $(fn $method();)*
  47                 }
  48                 unsafe {
  49                     $($method();)*
  50                 }
  51             }
  52             #[cfg(not($cfg))]
  53             fn init() { }
  54             init();
  55         } }
  56     );
  57     init_target!(
  58         llvm_component = "x86",
  59         LLVMInitializeX86TargetInfo,
  60         LLVMInitializeX86Target,
  61         LLVMInitializeX86TargetMC,
  62         LLVMInitializeX86AsmPrinter,
  63         LLVMInitializeX86AsmParser
  64     );
  65     init_target!(
  66         llvm_component = "arm",
  67         LLVMInitializeARMTargetInfo,
  68         LLVMInitializeARMTarget,
  69         LLVMInitializeARMTargetMC,
  70         LLVMInitializeARMAsmPrinter,
  71         LLVMInitializeARMAsmParser
  72     );
  73     init_target!(
  74         llvm_component = "aarch64",
  75         LLVMInitializeAArch64TargetInfo,
  76         LLVMInitializeAArch64Target,
  77         LLVMInitializeAArch64TargetMC,
  78         LLVMInitializeAArch64AsmPrinter,
  79         LLVMInitializeAArch64AsmParser
  80     );
  81     init_target!(
  82         llvm_component = "amdgpu",
  83         LLVMInitializeAMDGPUTargetInfo,
  84         LLVMInitializeAMDGPUTarget,
  85         LLVMInitializeAMDGPUTargetMC,
  86         LLVMInitializeAMDGPUAsmPrinter,
  87         LLVMInitializeAMDGPUAsmParser
  88     );
  89     init_target!(
  90         llvm_component = "avr",
  91         LLVMInitializeAVRTargetInfo,
  92         LLVMInitializeAVRTarget,
  93         LLVMInitializeAVRTargetMC,
  94         LLVMInitializeAVRAsmPrinter,
  95         LLVMInitializeAVRAsmParser
  96     );
  97     init_target!(
  98         llvm_component = "m68k",
  99         LLVMInitializeM68kTargetInfo,
 100         LLVMInitializeM68kTarget,
 101         LLVMInitializeM68kTargetMC,
 102         LLVMInitializeM68kAsmPrinter,
 103         LLVMInitializeM68kAsmParser
 104     );
 105     init_target!(
 106         llvm_component = "mips",
 107         LLVMInitializeMipsTargetInfo,
 108         LLVMInitializeMipsTarget,
 109         LLVMInitializeMipsTargetMC,
 110         LLVMInitializeMipsAsmPrinter,
 111         LLVMInitializeMipsAsmParser
 112     );
 113     init_target!(
 114         llvm_component = "powerpc",
 115         LLVMInitializePowerPCTargetInfo,
 116         LLVMInitializePowerPCTarget,
 117         LLVMInitializePowerPCTargetMC,
 118         LLVMInitializePowerPCAsmPrinter,
 119         LLVMInitializePowerPCAsmParser
 120     );
 121     init_target!(
 122         llvm_component = "systemz",
 123         LLVMInitializeSystemZTargetInfo,
 124         LLVMInitializeSystemZTarget,
 125         LLVMInitializeSystemZTargetMC,
 126         LLVMInitializeSystemZAsmPrinter,
 127         LLVMInitializeSystemZAsmParser
 128     );
 129     init_target!(
 130         llvm_component = "jsbackend",
 131         LLVMInitializeJSBackendTargetInfo,
 132         LLVMInitializeJSBackendTarget,
 133         LLVMInitializeJSBackendTargetMC
 134     );
 135     init_target!(
 136         llvm_component = "msp430",
 137         LLVMInitializeMSP430TargetInfo,
 138         LLVMInitializeMSP430Target,
 139         LLVMInitializeMSP430TargetMC,
 140         LLVMInitializeMSP430AsmPrinter,
 141         LLVMInitializeMSP430AsmParser
 142     );
 143     init_target!(
 144         llvm_component = "riscv",
 145         LLVMInitializeRISCVTargetInfo,
 146         LLVMInitializeRISCVTarget,
 147         LLVMInitializeRISCVTargetMC,
 148         LLVMInitializeRISCVAsmPrinter,
 149         LLVMInitializeRISCVAsmParser
 150     );
 151     init_target!(
 152         llvm_component = "sparc",
 153         LLVMInitializeSparcTargetInfo,
 154         LLVMInitializeSparcTarget,
 155         LLVMInitializeSparcTargetMC,
 156         LLVMInitializeSparcAsmPrinter,
 157         LLVMInitializeSparcAsmParser
 158     );
 159     init_target!(
 160         llvm_component = "nvptx",
 161         LLVMInitializeNVPTXTargetInfo,
 162         LLVMInitializeNVPTXTarget,
 163         LLVMInitializeNVPTXTargetMC,
 164         LLVMInitializeNVPTXAsmPrinter
 165     );
 166     init_target!(
 167         llvm_component = "hexagon",
 168         LLVMInitializeHexagonTargetInfo,
 169         LLVMInitializeHexagonTarget,
 170         LLVMInitializeHexagonTargetMC,
 171         LLVMInitializeHexagonAsmPrinter,
 172         LLVMInitializeHexagonAsmParser
 173     );
 174     init_target!(
 175         llvm_component = "webassembly",
 176         LLVMInitializeWebAssemblyTargetInfo,
 177         LLVMInitializeWebAssemblyTarget,
 178         LLVMInitializeWebAssemblyTargetMC,
 179         LLVMInitializeWebAssemblyAsmPrinter,
 180         LLVMInitializeWebAssemblyAsmParser
 181     );
 182     init_target!(
 183         llvm_component = "bpf",
 184         LLVMInitializeBPFTargetInfo,
 185         LLVMInitializeBPFTarget,
 186         LLVMInitializeBPFTargetMC,
 187         LLVMInitializeBPFAsmPrinter,
 188         LLVMInitializeBPFAsmParser
 189     );
 190 }