x86/crypto/twofish-i586-asm_32.S

1 /* SPDX-License-Identifier: GPL-2.0-or-later */
7 .file "twofish-i586-asm.S"
11 #include <asm/asm-offsets.h>
15 #define in_blk    12  /* input byte array address parameter*/
31 #define k	4128	/* key 1-32 ( word ) */
52 /* performs input whitening */
56 /* performs input whitening */
58 	xor	w+16+offset(context),	src;
61  * a input register containing a (rotated 16)
62  * b input register containing b
63  * c input register containing c
64  * d input register containing d (already rol $1)
74 	ror	$16,		b ## D;\
77 	ror	$16,		a ## D;\
98  * a input register containing a (rotated 16)
99  * b input register containing b
100  * c input register containing c
101  * d input register containing d (already rol $1)
112 	ror	$16,		b ## D;\
115 	ror	$16,		a ## D;\
122 	ror	$16,		b ## D;\
136  * a input register containing a
137  * b input register containing b (rotated 16)
138  * c input register containing c
139  * d input register containing d (already rol $1)
149 	ror	$16,		a ## D;\
152 	ror	$16,		b ## D;\
173  * a input register containing a
174  * b input register containing b (rotated 16)
175  * c input register containing c
176  * d input register containing d (already rol $1)
187 	ror	$16,		a ## D;\
190 	ror	$16,		b ## D;\
197 	ror	$16,		a ## D;\
216 	mov	ctx + 16(%esp),	%ebp	/* abuse the base pointer: set new base
218 	mov     in_blk+16(%esp),%edi	/* input address in edi */
225 	ror	$16,	%eax
252 	mov	out_blk+16(%esp),%edi;
273 	mov	ctx + 16(%esp),	%ebp	/* abuse the base pointer: set new base
275 	mov     in_blk+16(%esp),%edi	/* input address in edi */
283 	ror	$16,	%ebx
309 	mov	out_blk+16(%esp),%edi;