keccak v0.1.6

Backported cherry-pick of: ARMv8 `asm!` cleanups (#101)

We pass in `state.as_mut_ptr()` as `x0`, which was previously marked as
`in`. However, it's modified in the `asm!`, e.g.:

    sub x0, x0, #192

Note: it's also post-incremented by `ld1.1d` as state is loaded.

Since it's modified, it needs to be `inout`. This marks it as such,
using the `=> _` syntax to discard the result, then it's reset, then
modified as state is written).

Similar mutations were occurring with `x1` and `x8` as well, which have
been modified accordingly.

Author: tarcieri

keccak/CHANGELOG.md

@@ -5,6 +5,12 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
+## 0.1.6 (2026-02-13)
+### Fixed
+- ARMv8 `asm!` invocation had incorrect operand type ([#103])
+
+[#103]: https://github.com/RustCrypto/sponges/pull/103
+
 ## 0.1.5 (2024-01-12)
 ### Changed
 - Enable ARMv8 ASM backend for `p1600` ([#68])

keccak/Cargo.lock

@@ -1,6 +1,6 @@
 [package]
 name = "keccak"
-version = "0.1.5"
+version = "0.1.6"
 description = """
 Pure Rust implementation of the Keccak sponge function including the keccak-f
 and keccak-p variants

keccak/Cargo.toml

@@ -19,7 +19,7 @@ pub unsafe fn p1600_armv8_sha3_asm(state: &mut [u64; 25], round_count: usize) {
         // NOTE: This loop actually computes two f1600 functions in
         // parallel, in both the lower and the upper 64-bit of the
         // 128-bit registers v0-v24.
-    0:  sub	x8, x8, #1
+        0:  sub	x8, x8, #1
 
         // Theta Calculations
         eor3.16b   v25, v20, v15, v10
@@ -112,9 +112,9 @@ pub unsafe fn p1600_armv8_sha3_asm(state: &mut [u64; 25], round_count: usize) {
         st1.1d	{{v20-v23}}, [x0], #32
         st1.1d	{{v24}},     [x0]
     ",
-        in("x0") state.as_mut_ptr(),
-        in("x1") crate::RC[24-round_count..].as_ptr(),
-        in("x8") round_count,
+        inout("x0") state.as_mut_ptr() => _,
+        inout("x1") crate::RC[24-round_count..].as_ptr() => _,
+        inout("x8") round_count => _,
         clobber_abi("C"),
         options(nostack)
     );