17 #define ctx       4  /* Twofish context structure */
20 #define b_offset	4
64  * d input register containing d (already rol $1)
67 #define encrypt_round(a,b,c,d,round)\  argument
68 	push	d ## D;\
70 	mov	s1(%ebp,%edi,4),d ## D;\
72 	mov	s2(%ebp,%edi,4),%esi;\
74 	ror	$16,		b ## D;\
75 	xor	s2(%ebp,%edi,4),d ## D;\
77 	ror	$16,		a ## D;\
78 	xor	s3(%ebp,%edi,4),%esi;\
80 	xor	s3(%ebp,%edi,4),d ## D;\
82 	xor	(%ebp,%edi,4),	%esi;\
84 	ror	$15,		b ## D;\
85 	xor	(%ebp,%edi,4),	d ## D;\
87 	xor	s1(%ebp,%edi,4),%esi;\
89 	add	d ## D,		%esi;\
90 	add	%esi,		d ## D;\
92 	xor	%esi,		c ## D;\
93 	rol	$15,		c ## D;\
94 	add	k+4+round(%ebp),d ## D;\
95 	xor	%edi,		d ## D;
101  * d input register containing d (already rol $1)
105 #define encrypt_last_round(a,b,c,d,round)\  argument
106 	push	d ## D;\
108 	mov	s1(%ebp,%edi,4),d ## D;\
110 	mov	s2(%ebp,%edi,4),%esi;\
112 	ror	$16,		b ## D;\
113 	xor	s2(%ebp,%edi,4),d ## D;\
115 	ror	$16,		a ## D;\
116 	xor	s3(%ebp,%edi,4),%esi;\
118 	xor	s3(%ebp,%edi,4),d ## D;\
120 	xor	(%ebp,%edi,4),	%esi;\
122 	ror	$16,		b ## D;\
123 	xor	(%ebp,%edi,4),	d ## D;\
125 	xor	s1(%ebp,%edi,4),%esi;\
127 	add	d ## D,		%esi;\
128 	add	%esi,		d ## D;\
130 	xor	%esi,		c ## D;\
131 	ror	$1,		c ## D;\
132 	add	k+4+round(%ebp),d ## D;\
133 	xor	%edi,		d ## D;
139  * d input register containing d (already rol $1)
142 #define decrypt_round(a,b,c,d,round)\  argument
143 	push	c ## D;\
145 	mov	(%ebp,%edi,4),	c ## D;\
147 	mov	s3(%ebp,%edi,4),%esi;\
149 	ror	$16,		a ## D;\
150 	xor	s1(%ebp,%edi,4),c ## D;\
152 	ror	$16,		b ## D;\
153 	xor	(%ebp,%edi,4),	%esi;\
155 	xor	s2(%ebp,%edi,4),c ## D;\
157 	xor	s1(%ebp,%edi,4),%esi;\
159 	ror	$15,		a ## D;\
160 	xor	s3(%ebp,%edi,4),c ## D;\
162 	xor	s2(%ebp,%edi,4),%esi;\
164 	add	%esi,		c ## D;\
165 	add	c ## D,		%esi;\
166 	add	k+round(%ebp),	c ## D;\
167 	xor	%edi,		c ## D;\
168 	add	k+4+round(%ebp),%esi;\
169 	xor	%esi,		d ## D;\
170 	rol	$15,		d ## D;
176  * d input register containing d (already rol $1)
180 #define decrypt_last_round(a,b,c,d,round)\  argument
181 	push	c ## D;\
183 	mov	(%ebp,%edi,4),	c ## D;\
185 	mov	s3(%ebp,%edi,4),%esi;\
187 	ror	$16,		a ## D;\
188 	xor	s1(%ebp,%edi,4),c ## D;\
190 	ror	$16,		b ## D;\
191 	xor	(%ebp,%edi,4),	%esi;\
193 	xor	s2(%ebp,%edi,4),c ## D;\
195 	xor	s1(%ebp,%edi,4),%esi;\
197 	ror	$16,		a ## D;\
198 	xor	s3(%ebp,%edi,4),c ## D;\
200 	xor	s2(%ebp,%edi,4),%esi;\
202 	add	%esi,		c ## D;\
203 	add	c ## D,		%esi;\
204 	add	k+round(%ebp),	c ## D;\
205 	xor	%edi,		c ## D;\
206 	add	k+4+round(%ebp),%esi;\
207 	xor	%esi,		d ## D;\
208 	ror	$1,		d ## D;
235 	encrypt_round(R0,R1,R2,R3,4*8);
299 	decrypt_round(R2,R3,R0,R1,4*8);