src/librustc_llvm/lib.rs

   1 #![feature(nll)]
   2 #![feature(static_nobundle)]
   3 #![doc(html_root_url = "https://doc.rust-lang.org/nightly/")]
   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 /// Appending to a Rust string -- used by RawRustStringOstream.
  17 #[no_mangle]
  18 #[cfg_attr(not(bootstrap), allow(improper_ctypes_definitions))]
  19 pub unsafe extern "C" fn LLVMRustStringWriteImpl(
  20     sr: &RustString,
  21     ptr: *const c_char,
  22     size: size_t,
  23 ) {
  24     let slice = slice::from_raw_parts(ptr as *const u8, size as usize);
  25
  26     sr.bytes.borrow_mut().extend_from_slice(slice);
  27 }
  28
  29 /// Initialize targets enabled by the build script via `cfg(llvm_component = "...")`.
  30 /// N.B., this function can't be moved to `rustc_codegen_llvm` because of the `cfg`s.
  31 pub fn initialize_available_targets() {
  32     macro_rules! init_target(
  33         ($cfg:meta, $($method:ident),*) => { {
  34             #[cfg($cfg)]
  35             fn init() {
  36                 extern {
  37                     $(fn $method();)*
  38                 }
  39                 unsafe {
  40                     $($method();)*
  41                 }
  42             }
  43             #[cfg(not($cfg))]
  44             fn init() { }
  45             init();
  46         } }
  47     );
  48     init_target!(
  49         llvm_component = "x86",
  50         LLVMInitializeX86TargetInfo,
  51         LLVMInitializeX86Target,
  52         LLVMInitializeX86TargetMC,
  53         LLVMInitializeX86AsmPrinter,
  54         LLVMInitializeX86AsmParser
  55     );
  56     init_target!(
  57         llvm_component = "arm",
  58         LLVMInitializeARMTargetInfo,
  59         LLVMInitializeARMTarget,
  60         LLVMInitializeARMTargetMC,
  61         LLVMInitializeARMAsmPrinter,
  62         LLVMInitializeARMAsmParser
  63     );
  64     init_target!(
  65         llvm_component = "aarch64",
  66         LLVMInitializeAArch64TargetInfo,
  67         LLVMInitializeAArch64Target,
  68         LLVMInitializeAArch64TargetMC,
  69         LLVMInitializeAArch64AsmPrinter,
  70         LLVMInitializeAArch64AsmParser
  71     );
  72     init_target!(
  73         llvm_component = "amdgpu",
  74         LLVMInitializeAMDGPUTargetInfo,
  75         LLVMInitializeAMDGPUTarget,
  76         LLVMInitializeAMDGPUTargetMC,
  77         LLVMInitializeAMDGPUAsmPrinter,
  78         LLVMInitializeAMDGPUAsmParser
  79     );
  80     init_target!(
  81         llvm_component = "avr",
  82         LLVMInitializeAVRTargetInfo,
  83         LLVMInitializeAVRTarget,
  84         LLVMInitializeAVRTargetMC,
  85         LLVMInitializeAVRAsmPrinter,
  86         LLVMInitializeAVRAsmParser
  87     );
  88     init_target!(
  89         llvm_component = "mips",
  90         LLVMInitializeMipsTargetInfo,
  91         LLVMInitializeMipsTarget,
  92         LLVMInitializeMipsTargetMC,
  93         LLVMInitializeMipsAsmPrinter,
  94         LLVMInitializeMipsAsmParser
  95     );
  96     init_target!(
  97         llvm_component = "powerpc",
  98         LLVMInitializePowerPCTargetInfo,
  99         LLVMInitializePowerPCTarget,
 100         LLVMInitializePowerPCTargetMC,
 101         LLVMInitializePowerPCAsmPrinter,
 102         LLVMInitializePowerPCAsmParser
 103     );
 104     init_target!(
 105         llvm_component = "systemz",
 106         LLVMInitializeSystemZTargetInfo,
 107         LLVMInitializeSystemZTarget,
 108         LLVMInitializeSystemZTargetMC,
 109         LLVMInitializeSystemZAsmPrinter,
 110         LLVMInitializeSystemZAsmParser
 111     );
 112     init_target!(
 113         llvm_component = "jsbackend",
 114         LLVMInitializeJSBackendTargetInfo,
 115         LLVMInitializeJSBackendTarget,
 116         LLVMInitializeJSBackendTargetMC
 117     );
 118     init_target!(
 119         llvm_component = "msp430",
 120         LLVMInitializeMSP430TargetInfo,
 121         LLVMInitializeMSP430Target,
 122         LLVMInitializeMSP430TargetMC,
 123         LLVMInitializeMSP430AsmPrinter
 124     );
 125     init_target!(
 126         all(llvm_component = "msp430", llvm_has_msp430_asm_parser),
 127         LLVMInitializeMSP430AsmParser
 128     );
 129     init_target!(
 130         llvm_component = "riscv",
 131         LLVMInitializeRISCVTargetInfo,
 132         LLVMInitializeRISCVTarget,
 133         LLVMInitializeRISCVTargetMC,
 134         LLVMInitializeRISCVAsmPrinter,
 135         LLVMInitializeRISCVAsmParser
 136     );
 137     init_target!(
 138         llvm_component = "sparc",
 139         LLVMInitializeSparcTargetInfo,
 140         LLVMInitializeSparcTarget,
 141         LLVMInitializeSparcTargetMC,
 142         LLVMInitializeSparcAsmPrinter,
 143         LLVMInitializeSparcAsmParser
 144     );
 145     init_target!(
 146         llvm_component = "nvptx",
 147         LLVMInitializeNVPTXTargetInfo,
 148         LLVMInitializeNVPTXTarget,
 149         LLVMInitializeNVPTXTargetMC,
 150         LLVMInitializeNVPTXAsmPrinter
 151     );
 152     init_target!(
 153         llvm_component = "hexagon",
 154         LLVMInitializeHexagonTargetInfo,
 155         LLVMInitializeHexagonTarget,
 156         LLVMInitializeHexagonTargetMC,
 157         LLVMInitializeHexagonAsmPrinter,
 158         LLVMInitializeHexagonAsmParser
 159     );
 160     init_target!(
 161         llvm_component = "webassembly",
 162         LLVMInitializeWebAssemblyTargetInfo,
 163         LLVMInitializeWebAssemblyTarget,
 164         LLVMInitializeWebAssemblyTargetMC,
 165         LLVMInitializeWebAssemblyAsmPrinter
 166     );
 167 }