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Dwarf: fix treating big int limbs as signed

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This commit is contained in:
Jacob Young 2024-08-22 13:11:22 -04:00
parent 4a132d4bce
commit 874ad98f7a
1 changed files with 2 additions and 5 deletions
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7
src/link/Dwarf.zig
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@ -1418,11 +1418,8 @@ pub const WipNav = struct {
const limb_index = bit / limb_bits;
const limb_shift: std.math.Log2Int(std.math.big.Limb) = @intCast(bit % limb_bits);
const low_abs_part: u7 = @truncate(big_int.limbs[limb_index] >> limb_shift);
const abs_part = if (limb_shift > limb_bits - 7) abs_part: {
const next_limb: std.math.big.Limb = if (limb_index + 1 < big_int.limbs.len)
big_int.limbs[limb_index + 1]
else if (big_int.positive) 0 else std.math.maxInt(std.math.big.Limb);
const high_abs_part: u7 = @truncate(next_limb << -%limb_shift);
const abs_part = if (limb_shift > limb_bits - 7 and limb_index + 1 < big_int.limbs.len) abs_part: {
const high_abs_part: u7 = @truncate(big_int.limbs[limb_index + 1] << -%limb_shift);
break :abs_part high_abs_part | low_abs_part;
} else low_abs_part;
const twos_comp_part = if (big_int.positive) abs_part else twos_comp_part: {