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-rw-r--r--src/lib/libcrypto/perlasm/cbc.pl342
-rw-r--r--src/lib/libcrypto/perlasm/readme124
-rw-r--r--src/lib/libcrypto/perlasm/x86asm.pl113
3 files changed, 579 insertions, 0 deletions
diff --git a/src/lib/libcrypto/perlasm/cbc.pl b/src/lib/libcrypto/perlasm/cbc.pl
new file mode 100644
index 0000000000..2789305790
--- /dev/null
+++ b/src/lib/libcrypto/perlasm/cbc.pl
@@ -0,0 +1,342 @@
1#!/usr/bin/perl
2
3# void des_ncbc_encrypt(input, output, length, schedule, ivec, enc)
4# des_cblock (*input);
5# des_cblock (*output);
6# long length;
7# des_key_schedule schedule;
8# des_cblock (*ivec);
9# int enc;
10#
11# calls
12# des_encrypt((DES_LONG *)tin,schedule,DES_ENCRYPT);
13#
14
15#&cbc("des_ncbc_encrypt","des_encrypt",0);
16#&cbc("BF_cbc_encrypt","BF_encrypt","BF_encrypt",
17# 1,4,5,3,5,-1);
18#&cbc("des_ncbc_encrypt","des_encrypt","des_encrypt",
19# 0,4,5,3,5,-1);
20#&cbc("des_ede3_cbc_encrypt","des_encrypt3","des_decrypt3",
21# 0,6,7,3,4,5);
22#
23# When doing a cipher that needs bigendian order,
24# for encrypt, the iv is kept in bigendian form,
25# while for decrypt, it is kept in little endian.
26sub cbc
27 {
28 local($name,$enc_func,$dec_func,$swap,$iv_off,$enc_off,$p1,$p2,$p3)=@_;
29 # name is the function name
30 # enc_func and dec_func and the functions to call for encrypt/decrypt
31 # swap is true if byte order needs to be reversed
32 # iv_off is parameter number for the iv
33 # enc_off is parameter number for the encrypt/decrypt flag
34 # p1,p2,p3 are the offsets for parameters to be passed to the
35 # underlying calls.
36
37 &function_begin_B($name,"");
38 &comment("");
39
40 $in="esi";
41 $out="edi";
42 $count="ebp";
43
44 &push("ebp");
45 &push("ebx");
46 &push("esi");
47 &push("edi");
48
49 $data_off=4;
50 $data_off+=4 if ($p1 > 0);
51 $data_off+=4 if ($p2 > 0);
52 $data_off+=4 if ($p3 > 0);
53
54 &mov($count, &wparam(2)); # length
55
56 &comment("getting iv ptr from parameter $iv_off");
57 &mov("ebx", &wparam($iv_off)); # Get iv ptr
58
59 &mov($in, &DWP(0,"ebx","",0));# iv[0]
60 &mov($out, &DWP(4,"ebx","",0));# iv[1]
61
62 &push($out);
63 &push($in);
64 &push($out); # used in decrypt for iv[1]
65 &push($in); # used in decrypt for iv[0]
66
67 &mov("ebx", "esp"); # This is the address of tin[2]
68
69 &mov($in, &wparam(0)); # in
70 &mov($out, &wparam(1)); # out
71
72 # We have loaded them all, how lets push things
73 &comment("getting encrypt flag from parameter $enc_off");
74 &mov("ecx", &wparam($enc_off)); # Get enc flag
75 if ($p3 > 0)
76 {
77 &comment("get and push parameter $p3");
78 if ($enc_off != $p3)
79 { &mov("eax", &wparam($p3)); &push("eax"); }
80 else { &push("ecx"); }
81 }
82 if ($p2 > 0)
83 {
84 &comment("get and push parameter $p2");
85 if ($enc_off != $p2)
86 { &mov("eax", &wparam($p2)); &push("eax"); }
87 else { &push("ecx"); }
88 }
89 if ($p1 > 0)
90 {
91 &comment("get and push parameter $p1");
92 if ($enc_off != $p1)
93 { &mov("eax", &wparam($p1)); &push("eax"); }
94 else { &push("ecx"); }
95 }
96 &push("ebx"); # push data/iv
97
98 &cmp("ecx",0);
99 &jz(&label("decrypt"));
100
101 &and($count,0xfffffff8);
102 &mov("eax", &DWP($data_off,"esp","",0)); # load iv[0]
103 &mov("ebx", &DWP($data_off+4,"esp","",0)); # load iv[1]
104
105 &jz(&label("encrypt_finish"));
106
107 #############################################################
108
109 &set_label("encrypt_loop");
110 # encrypt start
111 # "eax" and "ebx" hold iv (or the last cipher text)
112
113 &mov("ecx", &DWP(0,$in,"",0)); # load first 4 bytes
114 &mov("edx", &DWP(4,$in,"",0)); # second 4 bytes
115
116 &xor("eax", "ecx");
117 &xor("ebx", "edx");
118
119 &bswap("eax") if $swap;
120 &bswap("ebx") if $swap;
121
122 &mov(&DWP($data_off,"esp","",0), "eax"); # put in array for call
123 &mov(&DWP($data_off+4,"esp","",0), "ebx"); #
124
125 &call($enc_func);
126
127 &mov("eax", &DWP($data_off,"esp","",0));
128 &mov("ebx", &DWP($data_off+4,"esp","",0));
129
130 &bswap("eax") if $swap;
131 &bswap("ebx") if $swap;
132
133 &mov(&DWP(0,$out,"",0),"eax");
134 &mov(&DWP(4,$out,"",0),"ebx");
135
136 # eax and ebx are the next iv.
137
138 &add($in, 8);
139 &add($out, 8);
140
141 &sub($count, 8);
142 &jnz(&label("encrypt_loop"));
143
144###################################################################3
145 &set_label("encrypt_finish");
146 &mov($count, &wparam(2)); # length
147 &and($count, 7);
148 &jz(&label("finish"));
149 &xor("ecx","ecx");
150 &xor("edx","edx");
151 &mov($count,&DWP(&label("cbc_enc_jmp_table"),"",$count,4));
152 &jmp_ptr($count);
153
154&set_label("ej7");
155 &xor("edx", "edx") if $ppro; # ppro friendly
156 &movb(&HB("edx"), &BP(6,$in,"",0));
157 &shl("edx",8);
158&set_label("ej6");
159 &movb(&HB("edx"), &BP(5,$in,"",0));
160&set_label("ej5");
161 &movb(&LB("edx"), &BP(4,$in,"",0));
162&set_label("ej4");
163 &mov("ecx", &DWP(0,$in,"",0));
164 &jmp(&label("ejend"));
165&set_label("ej3");
166 &movb(&HB("ecx"), &BP(2,$in,"",0));
167 &xor("ecx", "ecx") if $ppro; # ppro friendly
168 &shl("ecx",8);
169&set_label("ej2");
170 &movb(&HB("ecx"), &BP(1,$in,"",0));
171&set_label("ej1");
172 &movb(&LB("ecx"), &BP(0,$in,"",0));
173&set_label("ejend");
174
175 &xor("eax", "ecx");
176 &xor("ebx", "edx");
177
178 &bswap("eax") if $swap;
179 &bswap("ebx") if $swap;
180
181 &mov(&DWP($data_off,"esp","",0), "eax"); # put in array for call
182 &mov(&DWP($data_off+4,"esp","",0), "ebx"); #
183
184 &call($enc_func);
185
186 &mov("eax", &DWP($data_off,"esp","",0));
187 &mov("ebx", &DWP($data_off+4,"esp","",0));
188
189 &bswap("eax") if $swap;
190 &bswap("ebx") if $swap;
191
192 &mov(&DWP(0,$out,"",0),"eax");
193 &mov(&DWP(4,$out,"",0),"ebx");
194
195 &jmp(&label("finish"));
196
197 #############################################################
198 #############################################################
199 &set_label("decrypt",1);
200 # decrypt start
201 &and($count,0xfffffff8);
202 # The next 2 instructions are only for if the jz is taken
203 &mov("eax", &DWP($data_off+8,"esp","",0)); # get iv[0]
204 &mov("ebx", &DWP($data_off+12,"esp","",0)); # get iv[1]
205 &jz(&label("decrypt_finish"));
206
207 &set_label("decrypt_loop");
208 &mov("eax", &DWP(0,$in,"",0)); # load first 4 bytes
209 &mov("ebx", &DWP(4,$in,"",0)); # second 4 bytes
210
211 &bswap("eax") if $swap;
212 &bswap("ebx") if $swap;
213
214 &mov(&DWP($data_off,"esp","",0), "eax"); # put back
215 &mov(&DWP($data_off+4,"esp","",0), "ebx"); #
216
217 &call($dec_func);
218
219 &mov("eax", &DWP($data_off,"esp","",0)); # get return
220 &mov("ebx", &DWP($data_off+4,"esp","",0)); #
221
222 &bswap("eax") if $swap;
223 &bswap("ebx") if $swap;
224
225 &mov("ecx", &DWP($data_off+8,"esp","",0)); # get iv[0]
226 &mov("edx", &DWP($data_off+12,"esp","",0)); # get iv[1]
227
228 &xor("ecx", "eax");
229 &xor("edx", "ebx");
230
231 &mov("eax", &DWP(0,$in,"",0)); # get old cipher text,
232 &mov("ebx", &DWP(4,$in,"",0)); # next iv actually
233
234 &mov(&DWP(0,$out,"",0),"ecx");
235 &mov(&DWP(4,$out,"",0),"edx");
236
237 &mov(&DWP($data_off+8,"esp","",0), "eax"); # save iv
238 &mov(&DWP($data_off+12,"esp","",0), "ebx"); #
239
240 &add($in, 8);
241 &add($out, 8);
242
243 &sub($count, 8);
244 &jnz(&label("decrypt_loop"));
245############################ ENDIT #######################3
246 &set_label("decrypt_finish");
247 &mov($count, &wparam(2)); # length
248 &and($count, 7);
249 &jz(&label("finish"));
250
251 &mov("eax", &DWP(0,$in,"",0)); # load first 4 bytes
252 &mov("ebx", &DWP(4,$in,"",0)); # second 4 bytes
253
254 &bswap("eax") if $swap;
255 &bswap("ebx") if $swap;
256
257 &mov(&DWP($data_off,"esp","",0), "eax"); # put back
258 &mov(&DWP($data_off+4,"esp","",0), "ebx"); #
259
260 &call($dec_func);
261
262 &mov("eax", &DWP($data_off,"esp","",0)); # get return
263 &mov("ebx", &DWP($data_off+4,"esp","",0)); #
264
265 &bswap("eax") if $swap;
266 &bswap("ebx") if $swap;
267
268 &mov("ecx", &DWP($data_off+8,"esp","",0)); # get iv[0]
269 &mov("edx", &DWP($data_off+12,"esp","",0)); # get iv[1]
270
271 &xor("ecx", "eax");
272 &xor("edx", "ebx");
273
274 # this is for when we exit
275 &mov("eax", &DWP(0,$in,"",0)); # get old cipher text,
276 &mov("ebx", &DWP(4,$in,"",0)); # next iv actually
277
278&set_label("dj7");
279 &rotr("edx", 16);
280 &movb(&BP(6,$out,"",0), &LB("edx"));
281 &shr("edx",16);
282&set_label("dj6");
283 &movb(&BP(5,$out,"",0), &HB("edx"));
284&set_label("dj5");
285 &movb(&BP(4,$out,"",0), &LB("edx"));
286&set_label("dj4");
287 &mov(&DWP(0,$out,"",0), "ecx");
288 &jmp(&label("djend"));
289&set_label("dj3");
290 &rotr("ecx", 16);
291 &movb(&BP(2,$out,"",0), &LB("ecx"));
292 &shl("ecx",16);
293&set_label("dj2");
294 &movb(&BP(1,$in,"",0), &HB("ecx"));
295&set_label("dj1");
296 &movb(&BP(0,$in,"",0), &LB("ecx"));
297&set_label("djend");
298
299 # final iv is still in eax:ebx
300 &jmp(&label("finish"));
301
302
303############################ FINISH #######################3
304 &set_label("finish",1);
305 &mov("ecx", &wparam($iv_off)); # Get iv ptr
306
307 #################################################
308 $total=16+4;
309 $total+=4 if ($p1 > 0);
310 $total+=4 if ($p2 > 0);
311 $total+=4 if ($p3 > 0);
312 &add("esp",$total);
313
314 &mov(&DWP(0,"ecx","",0), "eax"); # save iv
315 &mov(&DWP(4,"ecx","",0), "ebx"); # save iv
316
317 &function_end_A($name);
318
319 &set_label("cbc_enc_jmp_table",1);
320 &data_word("0");
321 &data_word(&label("ej1"));
322 &data_word(&label("ej2"));
323 &data_word(&label("ej3"));
324 &data_word(&label("ej4"));
325 &data_word(&label("ej5"));
326 &data_word(&label("ej6"));
327 &data_word(&label("ej7"));
328 &set_label("cbc_dec_jmp_table",1);
329 &data_word("0");
330 &data_word(&label("dj1"));
331 &data_word(&label("dj2"));
332 &data_word(&label("dj3"));
333 &data_word(&label("dj4"));
334 &data_word(&label("dj5"));
335 &data_word(&label("dj6"));
336 &data_word(&label("dj7"));
337
338 &function_end_B($name);
339
340 }
341
3421;
diff --git a/src/lib/libcrypto/perlasm/readme b/src/lib/libcrypto/perlasm/readme
new file mode 100644
index 0000000000..f02bbee75a
--- /dev/null
+++ b/src/lib/libcrypto/perlasm/readme
@@ -0,0 +1,124 @@
1The perl scripts in this directory are my 'hack' to generate
2multiple different assembler formats via the one origional script.
3
4The way to use this library is to start with adding the path to this directory
5and then include it.
6
7push(@INC,"perlasm","../../perlasm");
8require "x86asm.pl";
9
10The first thing we do is setup the file and type of assember
11
12&asm_init($ARGV[0],$0);
13
14The first argument is the 'type'. Currently
15'cpp', 'sol', 'a.out', 'elf' or 'win32'.
16Argument 2 is the file name.
17
18The reciprocal function is
19&asm_finish() which should be called at the end.
20
21There are 2 main 'packages'. x86ms.pl, which is the microsoft assembler,
22and x86unix.pl which is the unix (gas) version.
23
24Functions of interest are:
25&external_label("des_SPtrans"); declare and external variable
26&LB(reg); Low byte for a register
27&HB(reg); High byte for a register
28&BP(off,base,index,scale) Byte pointer addressing
29&DWP(off,base,index,scale) Word pointer addressing
30&stack_push(num) Basically a 'sub esp, num*4' with extra
31&stack_pop(num) inverse of stack_push
32&function_begin(name,extra) Start a function with pushing of
33 edi, esi, ebx and ebp. extra is extra win32
34 external info that may be required.
35&function_begin_B(name,extra) Same as norma function_begin but no pushing.
36&function_end(name) Call at end of function.
37&function_end_A(name) Standard pop and ret, for use inside functions
38&function_end_B(name) Call at end but with poping or 'ret'.
39&swtmp(num) Address on stack temp word.
40&wparam(num) Parameter number num, that was push
41 in C convention. This all works over pushes
42 and pops.
43&comment("hello there") Put in a comment.
44&label("loop") Refer to a label, normally a jmp target.
45&set_label("loop") Set a label at this point.
46&data_word(word) Put in a word of data.
47
48So how does this all hold together? Given
49
50int calc(int len, int *data)
51 {
52 int i,j=0;
53
54 for (i=0; i<len; i++)
55 {
56 j+=other(data[i]);
57 }
58 }
59
60So a very simple version of this function could be coded as
61
62 push(@INC,"perlasm","../../perlasm");
63 require "x86asm.pl";
64
65 &asm_init($ARGV[0],"cacl.pl");
66
67 &external_label("other");
68
69 $tmp1= "eax";
70 $j= "edi";
71 $data= "esi";
72 $i= "ebp";
73
74 &comment("a simple function");
75 &function_begin("calc");
76 &mov( $data, &wparam(1)); # data
77 &xor( $j, $j);
78 &xor( $i, $i);
79
80 &set_label("loop");
81 &cmp( $i, &wparam(0));
82 &jge( &label("end"));
83
84 &mov( $tmp1, &DWP(0,$data,$i,4));
85 &push( $tmp1);
86 &call( "other");
87 &add( $j, "eax");
88 &pop( $tmp1);
89 &inc( $i);
90 &jmp( &label("loop"));
91
92 &set_label("end");
93 &mov( "eax", $j);
94
95 &function_end("calc");
96
97 &asm_finish();
98
99The above example is very very unoptimised but gives an idea of how
100things work.
101
102There is also a cbc mode function generator in cbc.pl
103
104&cbc( $name,
105 $encrypt_function_name,
106 $decrypt_function_name,
107 $true_if_byte_swap_needed,
108 $parameter_number_for_iv,
109 $parameter_number_for_encrypt_flag,
110 $first_parameter_to_pass,
111 $second_parameter_to_pass,
112 $third_parameter_to_pass);
113
114So for example, given
115void BF_encrypt(BF_LONG *data,BF_KEY *key);
116void BF_decrypt(BF_LONG *data,BF_KEY *key);
117void BF_cbc_encrypt(unsigned char *in, unsigned char *out, long length,
118 BF_KEY *ks, unsigned char *iv, int enc);
119
120&cbc("BF_cbc_encrypt","BF_encrypt","BF_encrypt",1,4,5,3,-1,-1);
121
122&cbc("des_ncbc_encrypt","des_encrypt","des_encrypt",0,4,5,3,5,-1);
123&cbc("des_ede3_cbc_encrypt","des_encrypt3","des_decrypt3",0,6,7,3,4,5);
124
diff --git a/src/lib/libcrypto/perlasm/x86asm.pl b/src/lib/libcrypto/perlasm/x86asm.pl
new file mode 100644
index 0000000000..6a9156ae9a
--- /dev/null
+++ b/src/lib/libcrypto/perlasm/x86asm.pl
@@ -0,0 +1,113 @@
1#!/usr/bin/perl
2
3# require 'x86asm.pl';
4# &asm_init("cpp","des-586.pl");
5# XXX
6# XXX
7# main'asm_finish
8
9sub main'asm_finish
10 {
11 &file_end();
12 &asm_finish_cpp() if $cpp;
13 print &asm_get_output();
14 }
15
16sub main'asm_init
17 {
18 ($type,$fn)=@_;
19 $filename=$fn;
20
21 $cpp=$sol=$aout=$win32=0;
22 if ( ($type eq "elf"))
23 { require "x86unix.pl"; }
24 elsif ( ($type eq "a.out"))
25 { $aout=1; require "x86unix.pl"; }
26 elsif ( ($type eq "sol"))
27 { $sol=1; require "x86unix.pl"; }
28 elsif ( ($type eq "cpp"))
29 { $cpp=1; require "x86unix.pl"; }
30 elsif ( ($type eq "win32"))
31 { $win32=1; require "x86ms.pl"; }
32 else
33 {
34 print STDERR <<"EOF";
35Pick one target type from
36 elf - linux, FreeBSD etc
37 a.out - old linux
38 sol - x86 solaris
39 cpp - format so x86unix.cpp can be used
40 win32 - Windows 95/Windows NT
41EOF
42 exit(1);
43 }
44
45 &asm_init_output();
46
47&comment("Don't even think of reading this code");
48&comment("It was automatically generated by $filename");
49&comment("Which is a perl program used to generate the x86 assember for");
50&comment("any of elf, a.out, BSDI,Win32, or Solaris");
51&comment("eric <eay\@cryptsoft.com>");
52&comment("");
53
54 $filename =~ s/\.pl$//;
55 &file($filename);
56 }
57
58sub asm_finish_cpp
59 {
60 return unless $cpp;
61
62 local($tmp,$i);
63 foreach $i (&get_labels())
64 {
65 $tmp.="#define $i _$i\n";
66 }
67 print <<"EOF";
68/* Run the C pre-processor over this file with one of the following defined
69 * ELF - elf object files,
70 * OUT - a.out object files,
71 * BSDI - BSDI style a.out object files
72 * SOL - Solaris style elf
73 */
74
75#define TYPE(a,b) .type a,b
76#define SIZE(a,b) .size a,b
77
78#if defined(OUT) || defined(BSDI)
79$tmp
80#endif
81
82#ifdef OUT
83#define OK 1
84#define ALIGN 4
85#endif
86
87#ifdef BSDI
88#define OK 1
89#define ALIGN 4
90#undef SIZE
91#undef TYPE
92#define SIZE(a,b)
93#define TYPE(a,b)
94#endif
95
96#if defined(ELF) || defined(SOL)
97#define OK 1
98#define ALIGN 16
99#endif
100
101#ifndef OK
102You need to define one of
103ELF - elf systems - linux-elf, NetBSD and DG-UX
104OUT - a.out systems - linux-a.out and FreeBSD
105SOL - solaris systems, which are elf with strange comment lines
106BSDI - a.out with a very primative version of as.
107#endif
108
109/* Let the Assembler begin :-) */
110EOF
111 }
112
1131;
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