mirror of
https://github.com/fluencelabs/wasmer
synced 2024-12-14 14:45:40 +00:00
74875ed554
* Move wasmer-runtime to wasmer-runtime-core * Add the runtime library * Fix issue with macros using wasmer_runtime, fmt * Make default compiler dependency optional * Add instantiate and validate functions
43 lines
1.8 KiB
Rust
43 lines
1.8 KiB
Rust
use libc::{c_int, c_void};
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use wasmer_runtime_core::Instance;
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/// setjmp
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pub extern "C" fn __setjmp(env_addr: u32, instance: &mut Instance) -> c_int {
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debug!("emscripten::__setjmp (setjmp)");
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unimplemented!()
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// unsafe {
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// // Rather than using the env as the holder of the jump buffer pointer,
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// // we use the environment address to store the index relative to jumps
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// // so the address of the jump it's outside the wasm memory itself.
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// let jump_index = instance.memory_offset_addr(0, env_addr as usize) as *mut i8;
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// // We create the jump buffer outside of the wasm memory
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// let jump_buf: UnsafeCell<[c_int; 27]> = UnsafeCell::new([0; 27]);
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// let mut jumps = &mut instance.emscripten_data().as_mut().unwrap().jumps;
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// let result = setjmp(jump_buf.get() as _);
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// // We set the jump index to be the last value of jumps
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// *jump_index = jumps.len() as _;
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// // We hold the reference of the jump buffer
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// jumps.push(jump_buf);
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// result
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// }
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}
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/// longjmp
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pub extern "C" fn __longjmp(env_addr: u32, val: c_int, instance: &mut Instance) -> ! {
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debug!("emscripten::__longjmp (longjmp) {}", val);
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unimplemented!()
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// unsafe {
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// // We retrieve the jump index from the env address
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// let jump_index = instance.memory_offset_addr(0, env_addr as usize) as *mut i8;
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// let mut jumps = &mut instance.emscripten_data().as_mut().unwrap().jumps;
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// // We get the real jump buffer from the jumps vector, using the retrieved index
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// let mut jump_buf = &jumps[*jump_index as usize];
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// longjmp(jump_buf.get() as _, val)
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// };
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}
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extern "C" {
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fn setjmp(env: *mut c_void) -> c_int;
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fn longjmp(env: *mut c_void, val: c_int) -> !;
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}
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