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crypto.ghash: compatibility with stage1

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Defining the selector enum outside the function definition is
required for stage1.
This commit is contained in:
Frank Denis 2022-11-08 16:59:53 +01:00
parent 7d48cb1138
commit 36e618aef1
1 changed files with 5 additions and 3 deletions
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8
lib/std/crypto/ghash.zig
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@ -72,8 +72,10 @@ pub const Ghash = struct {
return Ghash.initForBlockCount(key, math.maxInt(usize));
}
const Selector = enum { lo, hi };
// Carryless multiplication of two 64-bit integers for x86_64.
inline fn clmulPclmul(x: u128, y: u128, comptime half: enum { lo, hi }) u128 {
inline fn clmulPclmul(x: u128, y: u128, comptime half: Selector) u128 {
if (half == .hi) {
const product = asm (
\\ vpclmulqdq $0x11, %[x], %[y], %[out]
@ -94,7 +96,7 @@ pub const Ghash = struct {
}
// Carryless multiplication of two 64-bit integers for ARM crypto.
inline fn clmulPmull(x: u128, y: u128, comptime half: enum { lo, hi }) u128 {
inline fn clmulPmull(x: u128, y: u128, comptime half: Selector) u128 {
if (half == .hi) {
const product = asm (
\\ pmull2 %[out].1q, %[x].2d, %[y].2d
@ -115,7 +117,7 @@ pub const Ghash = struct {
}
// Software carryless multiplication of two 64-bit integers.
fn clmulSoft(x_: u128, y_: u128, comptime half: enum { lo, hi }) u128 {
fn clmulSoft(x_: u128, y_: u128, comptime half: Selector) u128 {
const x = @truncate(u64, if (half == .hi) x_ >> 64 else x_);
const y = @truncate(u64, if (half == .hi) y_ >> 64 else y_);