Fix for 32-bit ARM

1 files changed, 9 insertions, 0 deletions

diff --git a/src/lib/utils/simd/simd_32.h b/src/lib/utils/simd/simd_32.h
index 16f70ebcc..f9680c195 100644
--- a/src/lib/utils/simd/simd_32.h
+++ b/src/lib/utils/simd/simd_32.h
@@ -275,6 +275,13 @@ class SIMD_4x32 final
 
 #elif defined(BOTAN_SIMD_USE_NEON)
 
+         #if defined(BOTAN_TARGET_ARCH_IS_ARM32)
+
+         return SIMD_4x32(vorrq_u32(vshlq_n_u32(m_neon, static_cast<int>(ROT)),
+                                    vshrq_n_u32(m_neon, static_cast<int>(32-ROT))));
+
+         #else
+
          if(ROT == 8)
             {
             const uint8_t maskb[16] = { 3,0,1,2, 7,4,5,6, 11,8,9,10, 15,12,13,14 };
@@ -291,6 +298,8 @@ class SIMD_4x32 final
                                        vshrq_n_u32(m_neon, static_cast<int>(32-ROT))));
             }
 
+         #endif
+
 #else
          return SIMD_4x32(Botan::rotl<ROT>(m_scalar[0]),
                           Botan::rotl<ROT>(m_scalar[1]),