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stage2 codegen: Add generateSymbol for optional stub

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joachimschmidt557 2022-01-01 12:51:29 +01:00
parent 845531dde1
commit a722e1fc0b
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2 changed files with 15 additions and 6 deletions
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13
src/arch/arm/CodeGen.zig
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@ -3180,17 +3180,18 @@ fn genSetStack(self: *Self, ty: Type, stack_offset: u32, mcv: MCValue) InnerErro
// TODO optimize the register allocation
const regs = try self.register_manager.allocRegs(5, .{ null, null, null, null, null }, &.{});
const src_reg = regs[0];
const dst_reg = regs[2];
const dst_reg = regs[1];
const len_reg = regs[2];
const count_reg = regs[3];
const tmp_reg = regs[4];
// add src_reg, fp, #off
const src_offset_op: Instruction.Operand = if (Instruction.Operand.fromU32(off)) |x| x else {
// sub src_reg, fp, #off
const adj_src_offset = off + @intCast(u32, ty.abiSize(self.target.*));
const src_offset_op: Instruction.Operand = if (Instruction.Operand.fromU32(adj_src_offset)) |x| x else {
return self.fail("TODO load: set reg to stack offset with all possible offsets", .{});
};
_ = try self.addInst(.{
.tag = .add,
.tag = .sub,
.cond = .al,
.data = .{ .rr_op = .{
.rd = src_reg,
@ -3200,8 +3201,8 @@ fn genSetStack(self: *Self, ty: Type, stack_offset: u32, mcv: MCValue) InnerErro
});
// sub dst_reg, fp, #stack_offset
const adj_stack_offset = stack_offset + @intCast(u32, ty.abiSize(self.target.*));
const dst_offset_op: Instruction.Operand = if (Instruction.Operand.fromU32(adj_stack_offset)) |x| x else {
const adj_dst_offset = stack_offset + @intCast(u32, ty.abiSize(self.target.*));
const dst_offset_op: Instruction.Operand = if (Instruction.Operand.fromU32(adj_dst_offset)) |x| x else {
return self.fail("TODO load: set reg to stack offset with all possible offsets", .{});
};
_ = try self.addInst(.{

8
src/codegen.zig
View File

@ -400,6 +400,14 @@ pub fn generateSymbol(
return Result{ .appended = {} };
},
.Optional => {
// TODO generateSymbol for optionals
const target = bin_file.options.target;
const abi_size = try math.cast(usize, typed_value.ty.abiSize(target));
try code.writer().writeByteNTimes(0xaa, abi_size);
return Result{ .appended = {} };
},
else => |t| {
return Result{
.fail = try ErrorMsg.create(