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/*
* MD4 in IA-32 assembler
* (C) 1999-2007 Jack Lloyd
*
* Distributed under the terms of the Botan license
*/
#include <botan/asm_macr_ia32.h>
START_LISTING(md4_ia32.S)
START_FUNCTION(botan_md4_ia32_compress)
SPILL_REGS()
#define PUSHED 4
ASSIGN(EBP, ARG(2)) /* input block */
ASSIGN(EDI, ARG(3)) /* expanded words */
ZEROIZE(ESI)
START_LOOP(.LOAD_INPUT)
ADD_IMM(ESI, 4)
ASSIGN(EAX, ARRAY4(EBP, 0))
ASSIGN(EBX, ARRAY4(EBP, 1))
ASSIGN(ECX, ARRAY4(EBP, 2))
ASSIGN(EDX, ARRAY4(EBP, 3))
ADD_IMM(EBP, 16)
ASSIGN(ARRAY4_INDIRECT(EDI,ESI,-4), EAX)
ASSIGN(ARRAY4_INDIRECT(EDI,ESI,-3), EBX)
ASSIGN(ARRAY4_INDIRECT(EDI,ESI,-2), ECX)
ASSIGN(ARRAY4_INDIRECT(EDI,ESI,-1), EDX)
LOOP_UNTIL_EQ(ESI, 16, .LOAD_INPUT)
ASSIGN(EBP, ARG(1))
ASSIGN(EAX, ARRAY4(EBP, 0))
ASSIGN(EBX, ARRAY4(EBP, 1))
ASSIGN(ECX, ARRAY4(EBP, 2))
ASSIGN(EDX, ARRAY4(EBP, 3))
#define MSG EDI
#define T1 ESI
#define T2 EBP
#define FF(A, B, C, D, N, S) \
ASSIGN(T1, ARRAY4(MSG, N)) ; \
ASSIGN(T2, C) ; \
XOR(T2, D) ; \
AND(T2, B) ; \
XOR(T2, D) ; \
ADD(A, T1) ; \
ADD(A, T2) ; \
ROTL_IMM(A, S) ;
#define GG(A, B, C, D, N, S) \
ASSIGN(T1, ARRAY4(MSG, N)) ; \
ASSIGN(T2, B) ; \
OR(T2, C) ; \
AND(T2, D) ; \
ADD3_IMM(A, T1, 0x5A827999) ; \
ASSIGN(T1, B) ; \
AND(T1, C) ; \
OR(T2, T1) ; \
ADD(A, T2) ; \
ROTL_IMM(A, S) ;
#define HH(A, B, C, D, N, S) \
ASSIGN(T1, ARRAY4(MSG, N)) ; \
ASSIGN(T2, B) ; \
XOR(T2, C) ; \
XOR(T2, D) ; \
ADD3_IMM(A, T1, 0x6ED9EBA1) ; \
ADD(A, T2) ; \
ROTL_IMM(A, S) ;
FF(EAX,EBX,ECX,EDX, 0, 3);
FF(EDX,EAX,EBX,ECX, 1, 7);
FF(ECX,EDX,EAX,EBX, 2,11);
FF(EBX,ECX,EDX,EAX, 3,19);
FF(EAX,EBX,ECX,EDX, 4, 3);
FF(EDX,EAX,EBX,ECX, 5, 7);
FF(ECX,EDX,EAX,EBX, 6,11);
FF(EBX,ECX,EDX,EAX, 7,19);
FF(EAX,EBX,ECX,EDX, 8, 3);
FF(EDX,EAX,EBX,ECX, 9, 7);
FF(ECX,EDX,EAX,EBX,10,11);
FF(EBX,ECX,EDX,EAX,11,19);
FF(EAX,EBX,ECX,EDX,12, 3);
FF(EDX,EAX,EBX,ECX,13, 7);
FF(ECX,EDX,EAX,EBX,14,11);
FF(EBX,ECX,EDX,EAX,15,19);
GG(EAX,EBX,ECX,EDX, 0, 3);
GG(EDX,EAX,EBX,ECX, 4, 5);
GG(ECX,EDX,EAX,EBX, 8, 9);
GG(EBX,ECX,EDX,EAX,12,13);
GG(EAX,EBX,ECX,EDX, 1, 3);
GG(EDX,EAX,EBX,ECX, 5, 5);
GG(ECX,EDX,EAX,EBX, 9, 9);
GG(EBX,ECX,EDX,EAX,13,13);
GG(EAX,EBX,ECX,EDX, 2, 3);
GG(EDX,EAX,EBX,ECX, 6, 5);
GG(ECX,EDX,EAX,EBX,10, 9);
GG(EBX,ECX,EDX,EAX,14,13);
GG(EAX,EBX,ECX,EDX, 3, 3);
GG(EDX,EAX,EBX,ECX, 7, 5);
GG(ECX,EDX,EAX,EBX,11, 9);
GG(EBX,ECX,EDX,EAX,15,13);
HH(EAX,EBX,ECX,EDX, 0, 3);
HH(EDX,EAX,EBX,ECX, 8, 9);
HH(ECX,EDX,EAX,EBX, 4,11);
HH(EBX,ECX,EDX,EAX,12,15);
HH(EAX,EBX,ECX,EDX, 2, 3);
HH(EDX,EAX,EBX,ECX,10, 9);
HH(ECX,EDX,EAX,EBX, 6,11);
HH(EBX,ECX,EDX,EAX,14,15);
HH(EAX,EBX,ECX,EDX, 1, 3);
HH(EDX,EAX,EBX,ECX, 9, 9);
HH(ECX,EDX,EAX,EBX, 5,11);
HH(EBX,ECX,EDX,EAX,13,15);
HH(EAX,EBX,ECX,EDX, 3, 3);
HH(EDX,EAX,EBX,ECX,11, 9);
HH(ECX,EDX,EAX,EBX, 7,11);
HH(EBX,ECX,EDX,EAX,15,15);
ASSIGN(EBP, ARG(1))
ADD(ARRAY4(EBP, 0), EAX)
ADD(ARRAY4(EBP, 1), EBX)
ADD(ARRAY4(EBP, 2), ECX)
ADD(ARRAY4(EBP, 3), EDX)
RESTORE_REGS()
END_FUNCTION(botan_md4_ia32_compress)
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