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Add full support for globals

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This commit is contained in:
luccie-cmd 2025-08-04 19:33:05 +02:00
parent 53eb24dc35
commit 6f942fe9c2
3 changed files with 21 additions and 17 deletions
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23
src/mods/vm.zig
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@ -170,7 +170,7 @@ pub const Runtime = struct {
.localset => frame.locals[index.u32] = self.stack.pop().?,
.localtee => frame.locals[index.u32] = self.stack.items[self.stack.items.len - 1],
.globalget => try self.stack.append(self.global_runtime.getGlobal(index.u32)),
.globalset => @panic("UNIMPLEMENTED"),
.globalset => try self.global_runtime.updateGlobal(index.u32, self.stack.pop().?),
.tableget => @panic("UNIMPLEMENTED"),
.tableset => @panic("UNIMPLEMENTED"),
@ -212,13 +212,14 @@ pub const Runtime = struct {
.i64_load16_u => @panic("UNIMPLEMENTED"),
.i64_load32_s => @panic("UNIMPLEMENTED"),
.i64_load32_u => @panic("UNIMPLEMENTED"),
.i32_store => {
// TODO(ernesto): I'm pretty sure this is wrong
const start = index.memarg.offset + index.memarg.alignment;
const end = start + @sizeOf(u32);
const val = std.mem.nativeToLittle(i32, self.stack.pop().?.i32);
@memcpy(self.memory[start..end], std.mem.asBytes(&val));
},
// .i32_store => {
// // TODO(ernesto): I'm pretty sure this is wrong
// const start = index.memarg.offset + index.memarg.alignment;
// const end = start + @sizeOf(u32);
// const val = std.mem.nativeToLittle(i32, self.stack.pop().?.i32);
// @memcpy(self.memory[start..end], std.mem.asBytes(&val));
// },
.i32_store => @panic("UNIMPLEMENTED"),
.i64_store => @panic("UNIMPLEMENTED"),
.f32_store => @panic("UNIMPLEMENTED"),
.f64_store => @panic("UNIMPLEMENTED"),
@ -306,7 +307,11 @@ pub const Runtime = struct {
const b = self.stack.pop().?.i32;
try self.stack.append(Value{ .i32 = a + b });
},
.i32_sub => @panic("UNIMPLEMENTED"),
.i32_sub => {
const b = self.stack.pop().?.i32;
const a = self.stack.pop().?.i32;
try self.stack.append(Value{ .i32 = a - b });
},
.i32_and => {
const a = self.stack.pop().?.i32;
const b = self.stack.pop().?.i32;