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if that's what's necessary

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dcode
2019-03-14 06:09:49 +01:00
parent a5e14a0eaa
commit 84ddd97761
25 changed files with 1845 additions and 769 deletions
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42
std/assembly/memory.ts
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@ -1,47 +1,55 @@
import { memcmp, memmove, memset } from "./util/memory";
// @ts-ignore: decorator
@builtin export declare const HEAP_BASE: usize;
@builtin
export declare const HEAP_BASE: usize;
/** Memory manager interface. */
export namespace memory {
/** Gets the size of the memory in pages. */
// @ts-ignore: decorator
@builtin export declare function size(): i32;
@builtin
export declare function size(): i32;
/** Grows the memory by the given size in pages and returns the previous size in pages. */
// @ts-ignore: decorator
@unsafe @builtin export declare function grow(pages: i32): i32;
@unsafe @builtin
export declare function grow(pages: i32): i32;
/** Fills a section in memory with the specified byte value. */
// @ts-ignore: decorator
@unsafe @builtin export function fill(dst: usize, c: u8, n: usize): void {
@unsafe @builtin
export function fill(dst: usize, c: u8, n: usize): void {
memset(dst, c, n); // fallback if "bulk-memory" isn't enabled
}
/** Copies a section of memory to another. Has move semantics. */
// @ts-ignore: decorator
@unsafe @builtin export function copy(dst: usize, src: usize, n: usize): void {
@unsafe @builtin
export function copy(dst: usize, src: usize, n: usize): void {
memmove(dst, src, n); // fallback if "bulk-memory" isn't enabled
}
/** Initializes a memory segment. */
// @ts-ignore: decorator
@unsafe export function init(segmentIndex: u32, srcOffset: usize, dstOffset: usize, n: usize): void {
@unsafe
export function init(segmentIndex: u32, srcOffset: usize, dstOffset: usize, n: usize): void {
ERROR("not implemented");
}
/** Drops a memory segment. */
// @ts-ignore: decorator
@unsafe export function drop(segmentIndex: u32): void {
@unsafe
export function drop(segmentIndex: u32): void {
ERROR("not implemented");
}
/** Dynamically allocates a section of memory and returns its address. */
// @ts-ignore: decorator
@unsafe export function allocate(size: usize): usize {
// @ts-ignore: undefined
@unsafe
export function allocate(size: usize): usize {
// @ts-ignore: stub
if (isDefined(__memory_allocate)) return __memory_allocate(size);
else ERROR("missing implementation: memory.allocate");
return <usize>unreachable();
@ -49,23 +57,26 @@ export namespace memory {
/** Dynamically frees a section of memory by the previously allocated address. */
// @ts-ignore: decorator
@unsafe export function free(ptr: usize): void {
// @ts-ignore: undefined
@unsafe
export function free(ptr: usize): void {
// @ts-ignore: stub
if (isDefined(__memory_free)) __memory_free(ptr);
else ERROR("missing implementation: memory.free");
}
/** Resets the memory to its initial state. Arena allocator only. */
// @ts-ignore: decorator
@unsafe export function reset(): void {
// @ts-ignore: undefined
@unsafe
export function reset(): void {
// @ts-ignore: stub
if (isDefined(__memory_reset)) __memory_reset();
else ERROR("missing implementation: memory.reset");
}
/** Repeats a section of memory at a specific address. */
// @ts-ignore: decorator
@unsafe export function repeat(dst: usize, src: usize, srcLength: usize, count: usize): void {
@unsafe
export function repeat(dst: usize, src: usize, srcLength: usize, count: usize): void {
var index: usize = 0;
var total = srcLength * count;
while (index < total) {
@ -76,7 +87,8 @@ export namespace memory {
/** Compares a section of memory to another. */
// @ts-ignore: decorator
@inline export function compare(vl: usize, vr: usize, n: usize): i32 {
@inline
export function compare(vl: usize, vr: usize, n: usize): i32 {
return memcmp(vl, vr, n);
}
}