70ce288dc7
* Wasmtime: Add a pointer to `VMRuntimeLimits` in component contexts * Save exit Wasm FP and PC in component-to-host trampolines Fixes #4535 * Add comment about why we deref the trampoline's FP * Update some tests to use new `vmruntime_limits_*` methods
49 lines
1.7 KiB
Rust
49 lines
1.7 KiB
Rust
// The host_to_wasm_trampoline implementation is in the s390x.S
|
|
// file, but we still want to have this unit test here.
|
|
|
|
#[cfg(test)]
|
|
mod host_to_wasm_trampoline_offsets_tests {
|
|
use wasmtime_environ::{Module, PtrSize, VMOffsets};
|
|
|
|
#[test]
|
|
fn test() {
|
|
let module = Module::new();
|
|
let offsets = VMOffsets::new(std::mem::size_of::<*mut u8>() as u8, &module);
|
|
|
|
assert_eq!(8, offsets.vmctx_runtime_limits());
|
|
assert_eq!(40, offsets.ptr.vmruntime_limits_last_wasm_entry_sp());
|
|
assert_eq!(16, offsets.vmctx_callee());
|
|
assert_eq!(0x65726f63, u32::from_le_bytes(*b"core"));
|
|
}
|
|
}
|
|
|
|
// The wasm_to_host_trampoline implementation is in the s390x.S
|
|
// file, but we still want to have this unit test here.
|
|
|
|
#[cfg(test)]
|
|
mod wasm_to_host_trampoline_offsets_tests {
|
|
use crate::VMHostFuncContext;
|
|
use memoffset::offset_of;
|
|
use wasmtime_environ::{Module, PtrSize, VMOffsets};
|
|
|
|
#[test]
|
|
fn test() {
|
|
let module = Module::new();
|
|
let offsets = VMOffsets::new(std::mem::size_of::<*mut u8>() as u8, &module);
|
|
|
|
assert_eq!(8, offsets.vmctx_runtime_limits());
|
|
assert_eq!(24, offsets.ptr.vmruntime_limits_last_wasm_exit_fp());
|
|
assert_eq!(32, offsets.ptr.vmruntime_limits_last_wasm_exit_pc());
|
|
assert_eq!(8, offset_of!(VMHostFuncContext, host_func));
|
|
}
|
|
}
|
|
|
|
// The implementation for libcall trampolines is in the s390x.S
|
|
// file. We provide this dummy definition of wasm_to_libcall_trampoline
|
|
// here to make libcalls.rs compile on s390x. Note that this means we
|
|
// have to duplicate the list of libcalls used in the assembler file.
|
|
|
|
macro_rules! wasm_to_libcall_trampoline {
|
|
($libcall:ident ; $libcall_impl:ident) => {};
|
|
}
|