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