diff options
| -rw-r--r-- | arch/x86/crypto/aesni-intel_asm.S | 10 |
1 files changed, 9 insertions, 1 deletions
diff --git a/arch/x86/crypto/aesni-intel_asm.S b/arch/x86/crypto/aesni-intel_asm.S index c2fe5b77705c..aabc739eca19 100644 --- a/arch/x86/crypto/aesni-intel_asm.S +++ b/arch/x86/crypto/aesni-intel_asm.S @@ -346,7 +346,6 @@ _zero_cipher_left_\@: pxor %xmm0, %xmm8 .endif - GHASH_MUL %xmm8, %xmm13, %xmm9, %xmm10, %xmm11, %xmm5, %xmm6 movdqu %xmm8, AadHash(%arg2) .ifc \operation, enc # GHASH computation for the last <16 byte block @@ -379,6 +378,15 @@ _multiple_of_16_bytes_\@: .macro GCM_COMPLETE movdqu AadHash(%arg2), %xmm8 movdqu HashKey(%rsp), %xmm13 + + mov PBlockLen(%arg2), %r12 + + cmp $0, %r12 + je _partial_done\@ + + GHASH_MUL %xmm8, %xmm13, %xmm9, %xmm10, %xmm11, %xmm5, %xmm6 + +_partial_done\@: mov AadLen(%arg2), %r12 # %r13 = aadLen (number of bytes) shl $3, %r12 # convert into number of bits movd %r12d, %xmm15 # len(A) in %xmm15 |