1 use crate::Result;
2 use core::ops::Range;
3 
4 use crate::runtime::vm::stack_switching::VMHostArray;
5 use crate::runtime::vm::{VMContext, VMFuncRef, ValRaw};
6 
7 /// Making sure that this has the same size as the non-dummy version, to
8 /// make some tests happy.
9 #[derive(Debug)]
10 #[repr(C)]
11 pub struct VMContinuationStack {
12     _top: *mut u8,
13     _len: usize,
14     _match_size_on_unix: u8,
15 }
16 
17 impl VMContinuationStack {
new(_size: usize) -> Result<Self>18     pub fn new(_size: usize) -> Result<Self> {
19         crate::bail!("Stack switching disabled or not implemented on this platform")
20     }
21 
unallocated() -> Self22     pub fn unallocated() -> Self {
23         panic!("Stack switching disabled or not implemented on this platform")
24     }
25 
is_unallocated(&self) -> bool26     pub fn is_unallocated(&self) -> bool {
27         panic!("Stack switching disabled or not implemented on this platform")
28     }
29 
from_raw_parts(_base: *mut u8, _guard_size: usize, _len: usize) -> Result<Self>30     pub unsafe fn from_raw_parts(_base: *mut u8, _guard_size: usize, _len: usize) -> Result<Self> {
31         crate::bail!("Stack switching disabled or not implemented on this platform")
32     }
33 
is_from_raw_parts(&self) -> bool34     pub fn is_from_raw_parts(&self) -> bool {
35         panic!("Stack switching disabled or not implemented on this platform")
36     }
37 
top(&self) -> Option<*mut u8>38     pub fn top(&self) -> Option<*mut u8> {
39         panic!("Stack switching disabled or not implemented on this platform")
40     }
41 
range(&self) -> Option<Range<usize>>42     pub fn range(&self) -> Option<Range<usize>> {
43         panic!("Stack switching disabled or not implemented on this platform")
44     }
45 
control_context_instruction_pointer(&self) -> usize46     pub fn control_context_instruction_pointer(&self) -> usize {
47         panic!("Stack switching disabled or not implemented on this platform")
48     }
49 
control_context_frame_pointer(&self) -> usize50     pub fn control_context_frame_pointer(&self) -> usize {
51         panic!("Stack switching disabled or not implemented on this platform")
52     }
53 
control_context_stack_pointer(&self) -> usize54     pub fn control_context_stack_pointer(&self) -> usize {
55         panic!("Stack switching disabled or not implemented on this platform")
56     }
57 
initialize( &self, _func_ref: *const VMFuncRef, _caller_vmctx: *mut VMContext, _args: *mut VMHostArray<ValRaw>, _parameter_count: u32, _return_value_count: u32, )58     pub fn initialize(
59         &self,
60         _func_ref: *const VMFuncRef,
61         _caller_vmctx: *mut VMContext,
62         _args: *mut VMHostArray<ValRaw>,
63         _parameter_count: u32,
64         _return_value_count: u32,
65     ) {
66     }
67 }
68