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Progress and a tiny WASM binary parser

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This commit is contained in:
dcodeIO
2018-04-03 23:56:48 +02:00
parent 06198a3723
commit 5823e35f37
58 changed files with 12075 additions and 3964 deletions
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14
std/assembly/allocator/tlsf.ts
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@ -16,10 +16,11 @@
// FL: first level, SL: second level, AL: alignment, SB: small block
import {
BITS as AL_BITS,
SIZE as AL_SIZE,
MASK as AL_MASK
} from "./common/alignment";
AL_BITS,
AL_SIZE,
AL_MASK,
MAX_SIZE_32
} from "./common";
const SL_BITS: u32 = 5;
const SL_SIZE: usize = 1 << <usize>SL_BITS;
@ -32,6 +33,8 @@ const FL_BITS: u32 = (sizeof<usize>() == sizeof<u32>()
: 32 // ^= up to 4GB per block
) - SB_BITS;
// assert(1 << (FL_BITS + SB_BITS) == MAX_SIZE_32);
// ╒════════════════ Block structure layout (32-bit) ══════════════╕
// 3 2 1
// 1 0 9 8 7 6 5 4 3 2 1 0 9 8 7 6 5 4 3 2 1 0 9 8 7 6 5 4 3 2 1 0 bits
@ -457,7 +460,8 @@ export function allocate_memory(size: usize): usize {
// search for a suitable block
var data: usize = 0;
if (size && size < Block.MAX_SIZE) {
if (size && size <= Block.MAX_SIZE) {
// 32-bit MAX_SIZE is 1 << 30 and itself aligned, hence the following can't overflow MAX_SIZE
size = max<usize>((size + AL_MASK) & ~AL_MASK, Block.MIN_SIZE);
let block = root.search(size);