mirror of
https://github.com/fluencelabs/wasmer
synced 2025-06-02 19:51:19 +00:00
20d1023abe
* fix(emscripten) Remove unused imports. This patch removes unused imports reported by `rustc` as warnings. * fix(emscripten) Allow unreachable patterns in `_clock_gettime`. The compiler thinks `CLOCK_MONOTONIC_COARSE` is unreachable, which is not always the case. Add an attribute to allow unreachable patterns to remove the warning. * fix(emscripten) Rename unused variables. This patch renames various unused variables by appending an underscore to them. * fix(emscripten) Declare `table` as immutable. The `table` variable in `EmscriptenGlobals::new` was declared as mutable, but it's never mutated. * fix(emscripten) Remove an unnecessary `unsafe` block. * fix(emscripten) Remove duplicate definition of `SO_NOSIGPIPE`. The `SO_NOSIGPIPE` constant is defined in `syscalls/mod.rs` and `syscalls/unix.rs`. It's never used in the first case. We can safely remove it in this file, and keep it in `unix.rs`. * fix(emscripten) `read_string_from_wasm` is used only on Windows. Mark `read_string_from_wasm` as possible deadcode, since it's used only on Windows. * fix(emscripten) Remove `DYNAMICTOP_PTR_DIFF`, `stacktop`, `stack_max`, `dynamic_base` and `dynamic_ptr`. Four functions and one constant are used together but never used inside or outside this file. They are deadcode. * fix(emscripten) Remove `infinity` and `nan` fields of `EmscriptenGlobalsData`. Those fields are never used. * fix(emscripten) Allow non snake case in `emscripten_target.rs`. Many functions in this file don't follow the snake case style for Rust function names. The reason is that we want the names to match the emscripten symbol names; even if a mapping is done in `lib.rs`, it's easier to get the same names. * fix(emscripten) Rename `STATIC_TOP` to `static_top`. This variable is not a constant.
72 lines
2.1 KiB
Rust
72 lines
2.1 KiB
Rust
use super::process::abort_with_message;
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use libc::{c_int, c_void, memcpy, size_t};
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use wasmer_runtime_core::vm::Ctx;
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/// emscripten: _emscripten_memcpy_big
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pub fn _emscripten_memcpy_big(ctx: &mut Ctx, dest: u32, src: u32, len: u32) -> u32 {
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debug!(
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"emscripten::_emscripten_memcpy_big {}, {}, {}",
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dest, src, len
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);
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let dest_addr = emscripten_memory_pointer!(ctx.memory(0), dest) as *mut c_void;
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let src_addr = emscripten_memory_pointer!(ctx.memory(0), src) 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: _emscripten_get_heap_size
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pub fn _emscripten_get_heap_size(_ctx: &mut Ctx) -> u32 {
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debug!("emscripten::_emscripten_get_heap_size",);
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// TODO: Fix implementation
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16_777_216
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}
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/// emscripten: _emscripten_resize_heap
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pub fn _emscripten_resize_heap(_ctx: &mut Ctx, _requested_size: u32) -> u32 {
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debug!("emscripten::_emscripten_resize_heap {}", _requested_size);
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// TODO: Fix implementation
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0
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}
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/// emscripten: getTotalMemory
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pub fn get_total_memory(_ctx: &mut Ctx) -> u32 {
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debug!("emscripten::get_total_memory");
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// instance.memories[0].current_pages()
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// TODO: Fix implementation
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16_777_216
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}
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/// emscripten: enlargeMemory
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pub fn enlarge_memory(_ctx: &mut Ctx) -> u32 {
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debug!("emscripten::enlarge_memory");
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// instance.memories[0].grow(100);
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// TODO: Fix implementation
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0
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}
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/// emscripten: abortOnCannotGrowMemory
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pub fn abort_on_cannot_grow_memory(ctx: &mut Ctx, _requested_size: u32) -> u32 {
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debug!(
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"emscripten::abort_on_cannot_grow_memory {}",
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_requested_size
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);
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abort_with_message(ctx, "Cannot enlarge memory arrays!");
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0
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}
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/// emscripten: abortOnCannotGrowMemory
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pub fn abort_on_cannot_grow_memory_old(ctx: &mut Ctx) -> u32 {
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debug!("emscripten::abort_on_cannot_grow_memory");
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abort_with_message(ctx, "Cannot enlarge memory arrays!");
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0
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}
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/// emscripten: ___map_file
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pub fn ___map_file(_ctx: &mut Ctx, _one: u32, _two: u32) -> c_int {
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debug!("emscripten::___map_file");
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// NOTE: TODO: Em returns -1 here as well. May need to implement properly
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-1
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}
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