src/shims/foreign_items/posix/macos.rs

   1 use crate::*;
   2 use rustc::mir;
   3
   4 impl<'mir, 'tcx> EvalContextExt<'mir, 'tcx> for crate::MiriEvalContext<'mir, 'tcx> {}
   5 pub trait EvalContextExt<'mir, 'tcx: 'mir>: crate::MiriEvalContextExt<'mir, 'tcx> {
   6     fn emulate_foreign_item_by_name(
   7         &mut self,
   8         link_name: &str,
   9         args: &[OpTy<'tcx, Tag>],
  10         dest: PlaceTy<'tcx, Tag>,
  11         _ret: mir::BasicBlock,
  12     ) -> InterpResult<'tcx, bool> {
  13         let this = self.eval_context_mut();
  14
  15         match link_name {
  16             "__error" => {
  17                 let errno_place = this.machine.last_error.unwrap();
  18                 this.write_scalar(errno_place.to_ref().to_scalar()?, dest)?;
  19             }
  20
  21             // File related shims
  22
  23             // The only reason this is not in the `posix` module is because the `linux` item has a
  24             // different name.
  25             "close$NOCANCEL" => {
  26                 let result = this.close(args[0])?;
  27                 this.write_scalar(Scalar::from_int(result, dest.layout.size), dest)?;
  28             }
  29
  30             "stat$INODE64" => {
  31                 let result = this.macos_stat(args[0], args[1])?;
  32                 this.write_scalar(Scalar::from_int(result, dest.layout.size), dest)?;
  33             }
  34
  35             "lstat$INODE64" => {
  36                 let result = this.macos_lstat(args[0], args[1])?;
  37                 this.write_scalar(Scalar::from_int(result, dest.layout.size), dest)?;
  38             }
  39
  40             "fstat$INODE64" => {
  41                 let result = this.macos_fstat(args[0], args[1])?;
  42                 this.write_scalar(Scalar::from_int(result, dest.layout.size), dest)?;
  43             }
  44
  45             // Time related shims
  46             "gettimeofday" => {
  47                 let result = this.gettimeofday(args[0], args[1])?;
  48                 this.write_scalar(Scalar::from_int(result, dest.layout.size), dest)?;
  49             }
  50
  51             // Other shims
  52             "pthread_attr_get_np" => {
  53                 this.write_null(dest)?;
  54             }
  55
  56             "pthread_get_stackaddr_np" => {
  57                 let stack_addr = Scalar::from_uint(STACK_ADDR, dest.layout.size);
  58                 this.write_scalar(stack_addr, dest)?;
  59             }
  60
  61             "pthread_get_stacksize_np" => {
  62                 let stack_size = Scalar::from_uint(STACK_SIZE, dest.layout.size);
  63                 this.write_scalar(stack_size, dest)?;
  64             }
  65
  66             "_tlv_atexit" => {
  67                 // FIXME: register the destructor.
  68             }
  69
  70             "_NSGetArgc" => {
  71                 this.write_scalar(this.machine.argc.expect("machine must be initialized"), dest)?;
  72             }
  73
  74             "_NSGetArgv" => {
  75                 this.write_scalar(this.machine.argv.expect("machine must be initialized"), dest)?;
  76             }
  77
  78             "SecRandomCopyBytes" => {
  79                 let len = this.read_scalar(args[1])?.to_machine_usize(this)?;
  80                 let ptr = this.read_scalar(args[2])?.not_undef()?;
  81                 this.gen_random(ptr, len as usize)?;
  82                 this.write_null(dest)?;
  83             }
  84
  85             _ => throw_unsup_format!("can't call foreign function: {}", link_name),
  86         };
  87
  88         Ok(true)
  89     }
  90 }
  91