mirror of
https://github.com/fluencelabs/wasmer
synced 2024-12-15 15:15:40 +00:00
39 lines
1.1 KiB
Rust
39 lines
1.1 KiB
Rust
use libc::{c_void, memcpy, size_t};
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use crate::webassembly::Instance;
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use super::process::abort_with_message;
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/// emscripten: _emscripten_memcpy_big
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pub extern "C" fn _emscripten_memcpy_big(
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dest: u32,
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src: u32,
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len: u32,
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instance: &mut Instance,
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) -> u32 {
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debug!("emscripten::_emscripten_memcpy_big");
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let dest_addr = instance.memory_offset_addr(0, dest as usize) as *mut c_void;
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let src_addr = instance.memory_offset_addr(0, src as usize) as *mut c_void;
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unsafe {
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memcpy(dest_addr, src_addr, len as size_t);
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}
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dest
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}
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/// emscripten: getTotalMemory
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pub extern "C" fn get_total_memory(instance: &mut Instance) -> u32 {
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debug!("emscripten::get_total_memory");
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// instance.memories[0].current_pages()
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16777216
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}
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/// emscripten: enlargeMemory
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pub extern "C" fn enlarge_memory(_instance: &mut Instance) {
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debug!("emscripten::enlarge_memory");
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// instance.memories[0].grow(100);
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}
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/// emscripten: abortOnCannotGrowMemory
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pub extern "C" fn abort_on_cannot_grow_memory() {
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debug!("emscripten::abort_on_cannot_grow_memory");
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abort_with_message("Cannot enlarge memory arrays!");
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}
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