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Implement function types / indirect calls / trampolines (#39)

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Daniel Wirtz
2018-03-12 14:06:39 +01:00
committed by GitHub
parent 5d5f458ab1
commit 423533c6b0
67 changed files with 7499 additions and 5763 deletions
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12
std/assembly/allocator/arena.ts
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@ -5,16 +5,14 @@
* sure that there are no more references to cleared memory afterwards. Always aligns to 8 bytes.
*/
const AL_BITS: usize = 3;
const AL_SIZE: usize = 1 << AL_BITS;
const AL_MASK: usize = AL_SIZE - 1;
import { MASK as AL_MASK } from "./common/alignment";
var OFFSET: usize = (HEAP_BASE + AL_MASK) & ~AL_MASK;
var offset: usize = (HEAP_BASE + AL_MASK) & ~AL_MASK;
@global
export function allocate_memory(size: usize): usize {
if (!size) return 0;
var ptr = OFFSET;
var ptr = offset;
var newPtr = (ptr + size + AL_MASK) & ~AL_MASK;
var pagesBefore = current_memory();
if (newPtr > <usize>pagesBefore << 16) {
@ -26,7 +24,7 @@ export function allocate_memory(size: usize): usize {
}
}
}
OFFSET = newPtr;
offset = newPtr;
return ptr;
}
@ -37,5 +35,5 @@ export function free_memory(ptr: usize): void {
@global
export function reset_memory(): void {
OFFSET = (HEAP_BASE + AL_MASK) & ~AL_MASK;
offset = (HEAP_BASE + AL_MASK) & ~AL_MASK;
}