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[MODS/WASM]: Get tables, elems, data and more VM instructions working

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luccie-cmd 2025-08-05 22:59:41 +02:00
parent 5bd3e6c57b
commit a295365993
5 changed files with 381 additions and 64 deletions
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41
src/mods/ir.zig
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@ -628,10 +628,10 @@ const IRParserState = struct {
0x02...0x03 => self.parseBlock(b),
0x04 => self.parseIf(),
0x0C...0x0D => self.parseBranch(b),
0x0E => @panic("UNIMPLEMENTED"),
0x0E => self.parseTableBranch(b),
0x0F => self.push(@enumFromInt(b), .{ .u64 = 0 }),
0x10 => self.push(@enumFromInt(b), .{ .u32 = try self.parser.readU32() }),
0x11 => @panic("UNIMPLEMENTED"),
0x11 => self.push(@enumFromInt(b), .{ .indirect = .{ .y = try self.parser.readU32(), .x = try self.parser.readU32() } }),
0xD0 => self.push(@enumFromInt(b), .{ .reftype = try self.parser.parseReftype() }),
0xD1 => self.push(@enumFromInt(b), .{ .u64 = 0 }),
0xD2 => self.push(@enumFromInt(b), .{ .u32 = try self.parser.readU32() }),
@ -683,7 +683,14 @@ const IRParserState = struct {
const n = try self.parser.readU32();
try switch (n) {
0...7 => self.push(@enumFromInt(0xD3 + @as(u8, @intCast(n))), .{ .u64 = 0 }),
8...11 => @panic("UNIMPLEMENTED"),
8...9 => @panic("UNIMPLEMENTED"),
10...11 => {
try self.push(@enumFromInt(0xD3 + @as(u8, @intCast(n))), .{ .u64 = 0 });
_ = try self.parser.readByte();
if (n == 10) {
_ = try self.parser.readByte();
}
},
12...17 => @panic("UNIMPLEMENTED"),
else => {
std.log.err("Invalid misc instruction {d} at position {d}\n", .{ n, self.parser.byte_idx });
@ -807,6 +814,18 @@ const IRParserState = struct {
try self.push(@enumFromInt(b), .{ .u64 = 0 });
}
fn parseTableBranch(self: *IRParserState, b: u8) !void {
const n = try self.parser.readU32();
const idxs = try self.allocator.alloc(u32, n);
// defer self.allocator.free(idxs);
for (idxs) |*i| {
i.* = try self.parser.readU32();
try self.branches.put(self.allocator, @intCast(self.opcodes.items.len), i.*);
}
try self.branches.put(self.allocator, @intCast(self.opcodes.items.len), try self.parser.readU32());
try self.push(@enumFromInt(b), .{ .u64 = 0 });
}
fn parseVector(self: *IRParserState) !void {
const n = try self.parser.readU32();
try switch (n) {
@ -859,3 +878,19 @@ pub fn parseGlobalExpr(parser: *Parser) !IR {
.select_valtypes = &.{},
};
}
pub fn parseSingleExpr(parser: *Parser) !IR {
var state = IRParserState{
.opcodes = .{},
.indices = .{},
.branches = .{},
.parser = parser,
.allocator = parser.allocator,
};
try state.parseExpression();
return .{
.opcodes = try state.opcodes.toOwnedSlice(state.allocator),
.indices = try state.indices.toOwnedSlice(state.allocator),
.select_valtypes = &.{},
};
}