/* SPDX-License-Identifier: GPL-2.0-or-later */
/*
* Fast MD5 implementation for PPC
*
* Copyright (c) 2015 Markus Stockhausen <stockhausen@collogia.de>
*/
#include <asm/ppc_asm.h>
#include <asm/asm-offsets.h>
#include <asm/asm-compat.h>
#define rHP r3
#define rWP r4
#define rH0 r0
#define rH1 r6
#define rH2 r7
#define rH3 r5
#define rW00 r8
#define rW01 r9
#define rW02 r10
#define rW03 r11
#define rW04 r12
#define rW05 r14
#define rW06 r15
#define rW07 r16
#define rW08 r17
#define rW09 r18
#define rW10 r19
#define rW11 r20
#define rW12 r21
#define rW13 r22
#define rW14 r23
#define rW15 r24
#define rT0 r25
#define rT1 r26
#define INITIALIZE \
PPC_STLU r1,-INT_FRAME_SIZE(r1); \
SAVE_8GPRS(14, r1); /* push registers onto stack */ \
SAVE_4GPRS(22, r1); \
SAVE_GPR(26, r1)
#define FINALIZE \
REST_8GPRS(14, r1); /* pop registers from stack */ \
REST_4GPRS(22, r1); \
REST_GPR(26, r1); \
addi r1,r1,INT_FRAME_SIZE;
#ifdef __BIG_ENDIAN__
#define LOAD_DATA(reg, off) \
lwbrx reg,0,rWP; /* load data */
#define INC_PTR \
addi rWP,rWP,4; /* increment per word */
#define NEXT_BLOCK /* nothing to do */
#else
#define LOAD_DATA(reg, off) \
lwz reg,off(rWP); /* load data */
#define INC_PTR /* nothing to do */
#define NEXT_BLOCK \
addi rWP,rWP,64; /* increment per block */
#endif
#define R_00_15(a, b, c, d, w0, w1, p, q, off, k0h, k0l, k1h, k1l) \
LOAD_DATA(w0, off) /* W */ \
and rT0,b,c; /* 1: f = b and c */ \
INC_PTR /* ptr++ */ \
andc rT1,d,b; /* 1: f' = ~b and d */ \
LOAD_DATA(w1, off+4) /* W */ \
or rT0,rT0,rT1; /* 1: f = f or f' */ \
addi w0,w0,k0l; /* 1: wk = w + k */ \
add a,a,rT0; /* 1: a = a + f */ \
addis w0,w0,k0h; /* 1: wk = w + k' */ \
addis w1,w1,k1h; /* 2: wk = w + k */ \
add a,a,w0; /* 1: a = a + wk */ \
addi w1,w1,k1l; /* 2: wk = w + k' */ \
rotrwi a,a,p; /* 1: a = a rotl x */ \
add d,d,w1; /* 2: a = a + wk */ \
add a,a,b; /* 1: a = a + b */ \
and rT0,a,b; /* 2: f = b and c */ \
andc rT1,c,a; /* 2: f' = ~b and d */ \
or rT0,rT0,rT1; /* 2: f = f or f' */ \
add d,d,rT0; /* 2: a = a + f */ \
INC_PTR /* ptr++ */ \
rotrwi d,d,q; /* 2: a = a rotl x */ \
add d,d,a; /* 2: a = a + b */
#define R_16_31(a, b, c, d, w0, w1, p, q, k0h, k0l, k1h, k1l) \
andc rT0,c,d; /* 1: f = c and ~d */ \
and rT1,b,d; /* 1: f' = b and d */ \
addi w0,w0,k0l; /* 1: wk = w + k */ \
or rT0,rT0,rT1; /* 1: f = f or f' */ \
addis w0,w0,k0h; /* 1: wk = w + k' */ \
add a,a,rT0; /* 1: a = a + f */ \
addi w1,w1,k1l; /* 2: wk = w + k */ \
add a,a,w0; /* 1: a = a + wk */ \
addis w1,w1,k1h; /* 2: wk = w + k' */ \
andc rT0,b,c; /* 2: f = c and ~d */ \
rotrwi a,a,p; /* 1: a = a rotl x */ \
add a,a,b; /* 1: a = a + b */ \
add d,d,w1; /* 2: a = a + wk */ \
and rT1,a,c; /* 2: f' = b and d */ \
or rT0,rT0,rT1; /* 2: f = f or f' */ \
add d,d,rT0; /* 2: a = a + f */ \
rotrwi d,d,q; /* 2: a = a rotl x */ \
add d,d,a; /* 2: a = a +b */
#define R_32_47(a, b, c, d, w0, w1, p, q, k0h, k0l, k1h, k1l) \
xor rT0,b,c; /* 1: f' = b xor c */ \
addi w0,w0,k0l; /* 1: wk = w + k */ \
xor rT1,rT0,d; /* 1: f = f xor f' */ \
addis w0,w0,k0h; /* 1: wk = w + k' */ \
add a,a,rT1; /* 1: a = a + f */ \
addi w1,w1,k1l; /* 2: wk = w + k */ \
add a,a,w0; /* 1: a = a + wk */ \
addis w1,w1,k1h; /* 2: wk = w + k' */ \
rotrwi a,a,p; /* 1: a = a rotl x */ \
add d,d,w1; /* 2: a = a + wk */ \
add a,a,b; /* 1: a = a + b */ \
xor rT1,rT0,a; /* 2: f = b xor f' */ \
add d,d,rT1; /* 2: a = a + f */ \
rotrwi d,d,q; /* 2: a = a rotl x */ \
add d,d,a; /* 2: a = a + b */
#define R_48_63(a, b, c, d, w0, w1, p, q, k0h, k0l, k1h, k1l) \
addi w0,w0,k0l; /* 1: w = w + k */ \
orc rT0,b,d; /* 1: f = b or ~d */ \
addis w0,w0,k0h; /* 1: w = w + k' */ \
xor rT0,rT0,c; /* 1: f = f xor c */ \
add a,a,w0; /* 1: a = a + wk */ \
addi w1,w1,k1l; /* 2: w = w + k */ \
add a,a,rT0; /* 1: a = a + f */ \
addis w1,w1,k1h; /* 2: w = w + k' */ \
rotrwi a,a,p; /* 1: a = a rotl x */ \
add a,a,b; /* 1: a = a + b */ \
orc rT0,a,c; /* 2: f = b or ~d */ \
add d,d,w1; /* 2: a = a + wk */ \
xor rT0,rT0,b; /* 2: f = f xor c */ \
add d,d,rT0; /* 2: a = a + f */ \
rotrwi d,d,q; /* 2: a = a rotl x */ \
add d,d,a; /* 2: a = a + b */
_GLOBAL(ppc_md5_transform)
INITIALIZE
mtctr r5
lwz rH0,0(rHP)
lwz rH1,4(rHP)
lwz rH2,8(rHP)
lwz rH3,12(rHP)
ppc_md5_main:
R_00_15(rH0, rH1, rH2, rH3, rW00, rW01, 25, 20, 0,
0xd76b, -23432, 0xe8c8, -18602)
R_00_15(rH2, rH3, rH0, rH1, rW02, rW03, 15, 10, 8,
0x2420, 0x70db, 0xc1be, -12562)
R_00_15(rH0, rH1, rH2, rH3, rW04, rW05, 25, 20, 16,
0xf57c, 0x0faf, 0x4788, -14806)
R_00_15(rH2, rH3, rH0, rH1, rW06, rW07, 15, 10, 24,
0xa830, 0x4613, 0xfd47, -27391)
R_00_15(rH0, rH1, rH2, rH3, rW08, rW09, 25, 20, 32,
0x6981, -26408, 0x8b45, -2129)
R_00_15(rH2, rH3, rH0, rH1, rW10, rW11, 15, 10, 40,
0xffff, 0x5bb1, 0x895d, -10306)
R_00_15(rH0, rH1, rH2, rH3, rW12, rW13, 25, 20, 48,
0x6b90, 0x1122, 0xfd98, 0x7193)
R_00_15(rH2, rH3, rH0, rH1, rW14, rW15, 15, 10, 56,
0xa679, 0x438e, 0x49b4, 0x0821)
R_16_31(rH0, rH1, rH2, rH3, rW01, rW06, 27, 23,
0x0d56, 0x6e0c, 0x1810, 0x6d2d)
R_16_31(rH2, rH3, rH0, rH1, rW11, rW00, 18, 12,
0x9d02, -32109, 0x124c, 0x2332)
R_16_31(rH0, rH1, rH2, rH3, rW05, rW10, 27, 23,
0x8ea7, 0x4a33, 0x0245, -18270)
R_16_31(rH2, rH3, rH0, rH1, rW15, rW04, 18, 12,
0x8eee, -8608, 0xf258, -5095)
R_16_31(rH0, rH1, rH2, rH3, rW09, rW14, 27, 23,
0x969d, -10697, 0x1cbe, -15288)
R_16_31(rH2, rH3, rH0, rH1, rW03, rW08, 18, 12,
0x3317, 0x3e99, 0xdbd9, 0x7c15)
R_16_31(rH0, rH1, rH2, rH3, rW13, rW02, 27, 23,
0xac4b, 0x7772, 0xd8cf, 0x331d)
R_16_31(rH2, rH3, rH0, rH1, rW07, rW12, 18, 12,
0x6a28, 0x6dd8, 0x219a, 0x3b68)
R_32_47(rH0, rH1, rH2, rH3, rW05, rW08, 28, 21,
0x29cb, 0x28e5, 0x4218, -7788)
R_32_47(rH2, rH3, rH0, rH1, rW11, rW14, 16, 9,
0x473f, 0x06d1, 0x3aae, 0x3036)
R_32_47(rH0, rH1, rH2, rH3, rW01, rW04, 28, 21,
0xaea1, -15134, 0x640b, -11295)
R_32_47(rH2, rH3, rH0, rH1, rW07, rW10, 16, 9,
0x8f4c, 0x4887, 0xbc7c, -22499)
R_32_47(rH0, rH1, rH2, rH3, rW13, rW00, 28, 21,
0x7eb8, -27199, 0x00ea, 0x6050)
R_32_47(rH2, rH3, rH0, rH1, rW03, rW06, 16, 9,
0xe01a, 0x22fe, 0x4447, 0x69c5)
R_32_47(rH0, rH1, rH2, rH3, rW09, rW12, 28, 21,
0xb7f3, 0x0253, 0x59b1, 0x4d5b)
R_32_47(rH2, rH3, rH0, rH1, rW15, rW02, 16, 9,
0x4701, -27017, 0xc7bd, -19859)
R_48_63(rH0, rH1, rH2, rH3, rW00, rW07, 26, 22,
0x0988, -1462, 0x4c70, -19401)
R_48_63(rH2, rH3, rH0, rH1, rW14, rW05, 17, 11,
0xadaf, -5221, 0xfc99, 0x66f7)
R_48_63(rH0, rH1, rH2, rH3, rW12, rW03, 26, 22,
0x7e80, -16418, 0xba1e, -25587)
R_48_63(rH2, rH3, rH0, rH1, rW10, rW01, 17, 11,
0x4130, 0x380d, 0xe0c5, 0x738d)
lwz rW00,0(rHP)
R_48_63(rH0, rH1, rH2, rH3, rW08, rW15, 26, 22,
0xe837, -30770, 0xde8a, 0x69e8)
lwz rW14,4(rHP)
R_48_63(rH2, rH3, rH0, rH1, rW06, rW13, 17, 11,
0x9e79, 0x260f, 0x256d, -27941)
lwz rW12,8(rHP)
R_48_63(rH0, rH1, rH2, rH3, rW04, rW11, 26, 22,
0xab75, -20775, 0x4f9e, -28397)
lwz rW10,12(rHP)
R_48_63(rH2, rH3, rH0, rH1, rW02, rW09, 17, 11,
0x662b, 0x7c56, 0x11b2, 0x0358)
add rH0,rH0,rW00
stw rH0,0(rHP)
add rH1,rH1,rW14
stw rH1,4(rHP)
add rH2,rH2,rW12
stw rH2,8(rHP)
add rH3,rH3,rW10
stw rH3,12(rHP)
NEXT_BLOCK
bdnz ppc_md5_main
FINALIZE
blr