Commit 0610aa4b authored by Niels Möller's avatar Niels Möller

(aes_decrypt): Start using AES_ROUND. Fourth word.

Rev: src/nettle/x86/aes-decrypt.asm:1.7
parent b093a922
......@@ -66,44 +66,9 @@ aes_decrypt:
pushl %edi
AES_ROUND(_aes_decrypt_table,c,d,a,b)
C C // Third column
C C c d a b
C movl %ecx,%esi C copy first in
C andl $0x000000ff,%esi C clear all but offset
C shll $2,%esi C index in itbl1
C movl AES_TABLE0 + _aes_decrypt_table (%esi),%edi
C movl %edx,%esi C second one
C shrl $6,%esi
C andl $0x000003fc,%esi C clear all but offset bytes
C xorl AES_TABLE1 + _aes_decrypt_table (%esi),%edi
C movl %eax,%esi C third one
C shrl $14,%esi
C andl $0x000003fc,%esi
C xorl AES_TABLE2 + _aes_decrypt_table (%esi),%edi
C movl %ebx,%esi C fourth one
C shrl $22,%esi
C andl $0x000003fc,%esi
C xorl AES_TABLE3 + _aes_decrypt_table (%esi),%edi
pushl %edi C save first on stack
C // Fourth column
C b c d a
movl %ebx,%esi C copy first in
andl $0x000000ff,%esi C clear all but offset
shll $2,%esi C index in itbl1
movl AES_TABLE0 + _aes_decrypt_table (%esi),%edi
movl %ecx,%esi C second one
shrl $6,%esi
andl $0x000003fc,%esi C clear all but offset bytes
xorl AES_TABLE1 + _aes_decrypt_table (%esi),%edi
movl %edx,%esi C third one
shrl $14,%esi
andl $0x000003fc,%esi
xorl AES_TABLE2 + _aes_decrypt_table (%esi),%edi
movl %eax,%esi C fourth one
shrl $22,%esi
andl $0x000003fc,%esi
xorl AES_TABLE3 + _aes_decrypt_table (%esi),%edi
AES_ROUND(_aes_decrypt_table,b,c,d,a)
movl %edi,%edx
popl %ecx
......
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