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codegen: leave f80 explicitly unhandled for now

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This commit is contained in:
Jakub Konka 2022-03-02 17:08:16 +01:00
parent c9d1db7e8e
commit b0bb1583cb
1 changed files with 15 additions and 21 deletions
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36
src/codegen.zig
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@ -141,26 +141,13 @@ pub fn generateFunction(
}
fn writeFloat(comptime F: type, f: F, target: Target, endian: std.builtin.Endian, code: []u8) void {
if (F == f80) {
switch (target.cpu.arch) {
.i386, .x86_64 => {
const repr = math.break_f80(f);
mem.writeIntLittle(u64, code[0..8], repr.fraction);
mem.writeIntLittle(u16, code[8..10], repr.exp);
// TODO set the rest of the bytes to undefined. should we use 0xaa
// or is there a different way?
return;
},
else => {},
}
} else {
const Int = @Type(.{ .Int = .{
.signedness = .unsigned,
.bits = @typeInfo(F).Float.bits,
} });
const int = @bitCast(Int, f);
mem.writeInt(Int, code[0..@sizeOf(Int)], int, endian);
}
_ = target;
const Int = @Type(.{ .Int = .{
.signedness = .unsigned,
.bits = @typeInfo(F).Float.bits,
} });
const int = @bitCast(Int, f);
mem.writeInt(Int, code[0..@sizeOf(Int)], int, endian);
}
pub fn generateSymbol(
@ -202,7 +189,14 @@ pub fn generateSymbol(
16 => writeFloat(f16, typed_value.val.toFloat(f16), target, endian, try code.addManyAsArray(2)),
32 => writeFloat(f32, typed_value.val.toFloat(f32), target, endian, try code.addManyAsArray(4)),
64 => writeFloat(f64, typed_value.val.toFloat(f64), target, endian, try code.addManyAsArray(8)),
80 => writeFloat(f80, typed_value.val.toFloat(f80), target, endian, try code.addManyAsArray(10)),
80 => return Result{
.fail = try ErrorMsg.create(
bin_file.allocator,
src_loc,
"TODO handle f80 in generateSymbol",
.{},
),
},
128 => writeFloat(f128, typed_value.val.toFloat(f128), target, endian, try code.addManyAsArray(16)),
else => unreachable,
}