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(
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();
17 let errno_place = this.machine.last_error.unwrap();
18 this.write_scalar(errno_place.to_ref().to_scalar()?, dest)?;
23 // The only reason this is not in the `posix` module is because the `linux` item has a
26 let result = this.close(args[0])?;
27 this.write_scalar(Scalar::from_int(result, dest.layout.size), dest)?;
31 let result = this.macos_stat(args[0], args[1])?;
32 this.write_scalar(Scalar::from_int(result, dest.layout.size), dest)?;
36 let result = this.macos_lstat(args[0], args[1])?;
37 this.write_scalar(Scalar::from_int(result, dest.layout.size), dest)?;
41 let result = this.macos_fstat(args[0], args[1])?;
42 this.write_scalar(Scalar::from_int(result, dest.layout.size), dest)?;
45 // The only reason this is not in the `posix` module is because the `linux` item has a
47 "opendir$INODE64" => {
48 let result = this.opendir(args[0])?;
49 this.write_scalar(result, dest)?;
52 // The `linux` module has a parallel foreign item, `readdir64_r`, which uses a
53 // different struct layout.
54 "readdir_r$INODE64" => {
55 let result = this.macos_readdir_r(args[0], args[1], args[2])?;
56 this.write_scalar(Scalar::from_int(result, dest.layout.size), dest)?;
59 // Environment related shims
61 this.write_scalar(this.memory.extra.environ.unwrap().ptr, dest)?;
66 let result = this.gettimeofday(args[0], args[1])?;
67 this.write_scalar(Scalar::from_int(result, dest.layout.size), dest)?;
71 "pthread_attr_get_np" => {
72 this.write_null(dest)?;
75 "pthread_get_stackaddr_np" => {
76 let stack_addr = Scalar::from_uint(STACK_ADDR, dest.layout.size);
77 this.write_scalar(stack_addr, dest)?;
80 "pthread_get_stacksize_np" => {
81 let stack_size = Scalar::from_uint(STACK_SIZE, dest.layout.size);
82 this.write_scalar(stack_size, dest)?;
86 // FIXME: register the destructor.
90 this.write_scalar(this.machine.argc.expect("machine must be initialized"), dest)?;
94 this.write_scalar(this.machine.argv.expect("machine must be initialized"), dest)?;
97 "SecRandomCopyBytes" => {
98 let len = this.read_scalar(args[1])?.to_machine_usize(this)?;
99 let ptr = this.read_scalar(args[2])?.not_undef()?;
100 this.gen_random(ptr, len as usize)?;
101 this.write_null(dest)?;
104 _ => throw_unsup_format!("can't call foreign function: {}", link_name),