src/librustc_llvm/lib.rs

   1 #![feature(nll)]
   2 #![feature(static_nobundle)]
   3
   4 #![doc(html_root_url = "https://doc.rust-lang.org/nightly/")]
   5
   6 // NOTE: This crate only exists to allow linking on mingw targets.
   7
   8 use std::cell::RefCell;
   9 use std::slice;
  10 use libc::{c_char, size_t};
  11
  12
  13 #[repr(C)]
  14 pub struct RustString {
  15     pub bytes: RefCell<Vec<u8>>,
  16 }
  17
  18 /// Appending to a Rust string -- used by RawRustStringOstream.
  19 #[no_mangle]
  20 pub unsafe extern "C" fn LLVMRustStringWriteImpl(sr: &RustString,
  21                                                  ptr: *const c_char,
  22                                                  size: size_t) {
  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!(llvm_component = "x86",
  48                  LLVMInitializeX86TargetInfo,
  49                  LLVMInitializeX86Target,
  50                  LLVMInitializeX86TargetMC,
  51                  LLVMInitializeX86AsmPrinter,
  52                  LLVMInitializeX86AsmParser);
  53     init_target!(llvm_component = "arm",
  54                  LLVMInitializeARMTargetInfo,
  55                  LLVMInitializeARMTarget,
  56                  LLVMInitializeARMTargetMC,
  57                  LLVMInitializeARMAsmPrinter,
  58                  LLVMInitializeARMAsmParser);
  59     init_target!(llvm_component = "aarch64",
  60                  LLVMInitializeAArch64TargetInfo,
  61                  LLVMInitializeAArch64Target,
  62                  LLVMInitializeAArch64TargetMC,
  63                  LLVMInitializeAArch64AsmPrinter,
  64                  LLVMInitializeAArch64AsmParser);
  65     init_target!(llvm_component = "amdgpu",
  66                  LLVMInitializeAMDGPUTargetInfo,
  67                  LLVMInitializeAMDGPUTarget,
  68                  LLVMInitializeAMDGPUTargetMC,
  69                  LLVMInitializeAMDGPUAsmPrinter,
  70                  LLVMInitializeAMDGPUAsmParser);
  71     init_target!(llvm_component = "mips",
  72                  LLVMInitializeMipsTargetInfo,
  73                  LLVMInitializeMipsTarget,
  74                  LLVMInitializeMipsTargetMC,
  75                  LLVMInitializeMipsAsmPrinter,
  76                  LLVMInitializeMipsAsmParser);
  77     init_target!(llvm_component = "powerpc",
  78                  LLVMInitializePowerPCTargetInfo,
  79                  LLVMInitializePowerPCTarget,
  80                  LLVMInitializePowerPCTargetMC,
  81                  LLVMInitializePowerPCAsmPrinter,
  82                  LLVMInitializePowerPCAsmParser);
  83     init_target!(llvm_component = "systemz",
  84                  LLVMInitializeSystemZTargetInfo,
  85                  LLVMInitializeSystemZTarget,
  86                  LLVMInitializeSystemZTargetMC,
  87                  LLVMInitializeSystemZAsmPrinter,
  88                  LLVMInitializeSystemZAsmParser);
  89     init_target!(llvm_component = "jsbackend",
  90                  LLVMInitializeJSBackendTargetInfo,
  91                  LLVMInitializeJSBackendTarget,
  92                  LLVMInitializeJSBackendTargetMC);
  93     init_target!(llvm_component = "msp430",
  94                  LLVMInitializeMSP430TargetInfo,
  95                  LLVMInitializeMSP430Target,
  96                  LLVMInitializeMSP430TargetMC,
  97                  LLVMInitializeMSP430AsmPrinter);
  98     init_target!(all(llvm_component = "msp430", llvm_has_msp430_asm_parser),
  99                  LLVMInitializeMSP430AsmParser);
 100     init_target!(llvm_component = "riscv",
 101                  LLVMInitializeRISCVTargetInfo,
 102                  LLVMInitializeRISCVTarget,
 103                  LLVMInitializeRISCVTargetMC,
 104                  LLVMInitializeRISCVAsmPrinter,
 105                  LLVMInitializeRISCVAsmParser);
 106     init_target!(llvm_component = "sparc",
 107                  LLVMInitializeSparcTargetInfo,
 108                  LLVMInitializeSparcTarget,
 109                  LLVMInitializeSparcTargetMC,
 110                  LLVMInitializeSparcAsmPrinter,
 111                  LLVMInitializeSparcAsmParser);
 112     init_target!(llvm_component = "nvptx",
 113                  LLVMInitializeNVPTXTargetInfo,
 114                  LLVMInitializeNVPTXTarget,
 115                  LLVMInitializeNVPTXTargetMC,
 116                  LLVMInitializeNVPTXAsmPrinter);
 117     init_target!(llvm_component = "hexagon",
 118                  LLVMInitializeHexagonTargetInfo,
 119                  LLVMInitializeHexagonTarget,
 120                  LLVMInitializeHexagonTargetMC,
 121                  LLVMInitializeHexagonAsmPrinter,
 122                  LLVMInitializeHexagonAsmParser);
 123     init_target!(llvm_component = "webassembly",
 124                  LLVMInitializeWebAssemblyTargetInfo,
 125                  LLVMInitializeWebAssemblyTarget,
 126                  LLVMInitializeWebAssemblyTargetMC,
 127                  LLVMInitializeWebAssemblyAsmPrinter);
 128 }