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Update dist files; Also parse name and source mapping sections in lib/parse

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This commit is contained in:
dcodeIO
2018-04-04 03:41:04 +02:00
parent c45a35b1c1
commit acfef646ef
15 changed files with 290 additions and 89 deletions
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168
lib/parse/assembly/index.ts
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@ -5,6 +5,7 @@ import {
Type,
SectionId,
ExternalKind,
NameType,
MAX_PAGES,
MAX_TABLES,
Opcode
@ -90,14 +91,22 @@ declare function onFunction(index: u32, typeIndex: u32): void;
declare function onGlobal(index: u32, type: u32, mutability: u32): void;
declare function onExport(index: u32, kind: u32, kindIndex: u32, nameOffset: u32, nameLength: u32): void;
declare function onStart(index: u32): void;
declare function onSourceMappingURL(offset: u32, length: u32): void;
declare function onModuleName(offset: u32, length: u32): void;
declare function onFunctionName(index: u32, offset: u32, length: u32): void;
declare function onLocalName(funcIndex: u32, index: u32, offset: u32, length: u32): void;
/** Starts parsing the module that has been placed in memory. */
function parse(): void {
export function parse(begin: usize, end: usize): void {
off = begin;
var magic = readUint<u32>();
if (magic != 0x6D736100) unreachable();
var version = readUint<u32>();
if (version != 1) unreachable();
var end: usize = current_memory() << 16;
var fun_space_index: u32 = 0;
var glo_space_index: u32 = 0;
var mem_space_index: u32 = 0;
var tbl_space_index: u32 = 0;
while (off < end) {
let section_off = off;
let id = readVaruint(7);
@ -105,13 +114,11 @@ function parse(): void {
let name_off = 0;
let name_len = 0;
if (!id) {
let before = off;
name_len = readVaruint(32);
if (!name_len) {
off = section_off;
break;
}
name_off = off;
off += name_len;
payload_len -= off - before;
} else if (id > <u32>SectionId.Data) unreachable();
let payload_off = off;
if (onSection(
@ -126,16 +133,27 @@ function parse(): void {
let count = readVaruint(32);
for (let index: u32 = 0; index < count; ++index) {
let form = readVarint(7) & 0x7f;
onType(index, form);
onType(
index,
form
);
let paramCount = readVaruint(32);
for (let paramIndex: u32 = 0; paramIndex < paramCount; ++paramIndex) {
let paramType = readVarint(7) & 0x7f;
onTypeParam(index, paramIndex, paramType);
onTypeParam(
index,
paramIndex,
paramType
);
}
let returnCount = readVaruint(1); // MVP
for (let returnIndex: u32 = 0; returnIndex < returnCount; ++returnIndex) {
let returnType = readVarint(7) & 0x7f;
onTypeReturn(index, returnIndex, returnType);
onTypeReturn(
index,
returnIndex,
returnType
);
}
}
break;
@ -145,10 +163,10 @@ function parse(): void {
for (let index: u32 = 0; index < count; ++index) {
let module_len = readVaruint(32);
let module_off = off;
off += module_off;
off += module_len;
let field_len = readVaruint(32);
let field_off = off;
off += field_off;
off += field_len;
let kind = readUint<u8>();
onImport(
index,
@ -161,7 +179,10 @@ function parse(): void {
switch (kind) {
case ExternalKind.Function: {
let type = readVaruint(32);
onFunctionImport(index, type);
onFunctionImport(
fun_space_index++,
type
);
break;
}
case ExternalKind.Table: {
@ -169,20 +190,35 @@ function parse(): void {
let flags = readVaruint(1);
let initial = readVaruint(32);
let maximum: u32 = flags & 1 ? readVaruint(32) : MAX_TABLES;
onTableImport(index, type, initial, maximum, flags);
onTableImport(
tbl_space_index++,
type,
initial,
maximum,
flags
);
break;
}
case ExternalKind.Memory: {
let flags = readVaruint(1);
let initial = readVaruint(32);
let maximum: u32 = flags & 1 ? readVaruint(32) : MAX_PAGES;
onMemoryImport(index, initial, maximum, flags);
onMemoryImport(
mem_space_index++,
initial,
maximum,
flags
);
break;
}
case ExternalKind.Global: {
let type = readVarint(7) & 0x7f;
let mutability = readVaruint(1);
onGlobalImport(index, type, mutability);
onGlobalImport(
glo_space_index++,
type,
mutability
);
break;
}
default: unreachable();
@ -192,9 +228,12 @@ function parse(): void {
}
case SectionId.Function: {
let count = readVaruint(32);
for (let index: u32 = 0; index < count; ++index) {
for (let i: u32 = 0; i < count; ++i) {
let typeIndex = readVaruint(32);
onFunction(index, typeIndex);
onFunction(
fun_space_index++,
typeIndex
);
}
break;
}
@ -204,13 +243,18 @@ function parse(): void {
let flags = readVaruint(1);
let initial = readVaruint(32);
let maximum: u32 = flags ? readVaruint(32) : MAX_PAGES;
onMemory(index, initial, maximum, flags);
onMemory(
mem_space_index++,
initial,
maximum,
flags
);
}
break;
}
case SectionId.Global: {
let count = readVaruint(32);
for (let index: u32 = 0; index < count; ++index) {
for (let i: u32 = 0; i < count; ++i) {
let type = readVarint(7) & 0x7f;
let mutability = readVaruint(1);
let op = readUint<u8>();
@ -239,7 +283,11 @@ function parse(): void {
}
op = readUint<u8>();
if (op != Opcode.end) unreachable();
onGlobal(index, type, mutability);
onGlobal(
glo_space_index++,
type,
mutability
);
}
break;
}
@ -268,8 +316,80 @@ function parse(): void {
);
break;
}
case SectionId.Custom:
case SectionId.Code: { // TODO
case SectionId.Custom: {
if (
name_len == 4 &&
load<u32>(name_off) == 0x656D616E // "name"
) {
let name_type = readVaruint(7);
let name_payload_len = readVaruint(32);
let name_payload_off = off;
switch (name_type) {
case NameType.Module: {
let module_name_len = readVaruint(32);
let module_name_off = off;
onModuleName(
module_name_off,
module_name_len
);
break;
}
case NameType.Function: {
let count = readVaruint(32);
for (let i: u32 = 0; i < count; ++i) {
let fn_index = readVaruint(32);
let fn_name_len = readVaruint(32);
let fn_name_off = off;
off += fn_name_len;
onFunctionName(
fn_index,
fn_name_off,
fn_name_len
);
}
break;
}
case NameType.Local: {
let count = readVaruint(32);
for (let i: u32 = 0; i < count; ++i) {
let fn_index = readVaruint(32);
let lc_count = readVaruint(32);
for (let j: u32 = 0; j < lc_count; ++j) {
let lc_index = readVaruint(32);
let lc_name_len = readVaruint(32);
let lc_name_off = off;
off += lc_name_len;
onLocalName(
fn_index,
lc_index,
lc_name_off,
lc_name_len
);
}
}
break;
}
default: unreachable();
}
off = name_payload_off + name_payload_len; // ignore errors
break;
} else if (
name_len == 16 &&
load<u64>(name_off ) == 0x614D656372756F73 && // "sourceMa"
load<u64>(name_off + 8) == 0x4C5255676E697070 // "ppingURL"
) {
let url_len = readVaruint(32);
let url_off = off;
off += url_len;
onSourceMappingURL(
url_off,
url_len
);
}
off = payload_off + payload_len; // ignore errors
break;
}
case SectionId.Code: { // skip
off += payload_len;
break;
}
@ -279,7 +399,5 @@ function parse(): void {
off += payload_len;
}
}
if (off != end) unreachable();
}
// Start parsing immediately
parse();