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#![no_std]
use core::alloc::GlobalAlloc;
pub struct MosAllocator;
extern "C" {
fn malloc(n: usize) -> *mut u8;
fn free(ptr: *mut u8);
fn __heap_bytes_free() -> usize;
fn __heap_bytes_used() -> usize;
fn __set_heap_limit(limit: usize);
fn __heap_limit() -> usize;
}
pub fn bytes_free() -> usize {
unsafe { __heap_bytes_free() }
}
pub fn bytes_used() -> usize {
unsafe { __heap_bytes_used() }
}
pub fn set_limit(limit: usize) {
unsafe { __set_heap_limit(limit) }
}
pub fn get_limit() -> usize {
unsafe { __heap_limit() }
}
unsafe impl GlobalAlloc for MosAllocator {
unsafe fn alloc(&self, layout: core::alloc::Layout) -> *mut u8 {
malloc(layout.size())
}
unsafe fn dealloc(&self, ptr: *mut u8, _layout: core::alloc::Layout) {
free(ptr);
}
}
#[global_allocator]
static ALLOCATOR: MosAllocator = MosAllocator;
