summaryrefslogtreecommitdiff
path: root/src/lib/libcrypto/x86cpuid.pl
diff options
context:
space:
mode:
Diffstat (limited to '')
-rw-r--r--src/lib/libcrypto/x86cpuid.pl312
1 files changed, 0 insertions, 312 deletions
diff --git a/src/lib/libcrypto/x86cpuid.pl b/src/lib/libcrypto/x86cpuid.pl
deleted file mode 100644
index a7464af19b..0000000000
--- a/src/lib/libcrypto/x86cpuid.pl
+++ /dev/null
@@ -1,312 +0,0 @@
1#!/usr/bin/env perl
2
3$0 =~ m/(.*[\/\\])[^\/\\]+$/; $dir=$1;
4push(@INC, "${dir}perlasm", "perlasm");
5require "x86asm.pl";
6
7&asm_init($ARGV[0],"x86cpuid");
8
9for (@ARGV) { $sse2=1 if (/-DOPENSSL_IA32_SSE2/); }
10
11&function_begin("OPENSSL_ia32_cpuid");
12 &xor ("edx","edx");
13 &pushf ();
14 &pop ("eax");
15 &mov ("ecx","eax");
16 &xor ("eax",1<<21);
17 &push ("eax");
18 &popf ();
19 &pushf ();
20 &pop ("eax");
21 &xor ("ecx","eax");
22 &bt ("ecx",21);
23 &jnc (&label("done"));
24 &xor ("eax","eax");
25 &cpuid ();
26 &mov ("edi","eax"); # max value for standard query level
27
28 &xor ("eax","eax");
29 &cmp ("ebx",0x756e6547); # "Genu"
30 &setne (&LB("eax"));
31 &mov ("ebp","eax");
32 &cmp ("edx",0x49656e69); # "ineI"
33 &setne (&LB("eax"));
34 &or ("ebp","eax");
35 &cmp ("ecx",0x6c65746e); # "ntel"
36 &setne (&LB("eax"));
37 &or ("ebp","eax"); # 0 indicates Intel CPU
38 &jz (&label("intel"));
39
40 &cmp ("ebx",0x68747541); # "Auth"
41 &setne (&LB("eax"));
42 &mov ("esi","eax");
43 &cmp ("edx",0x69746E65); # "enti"
44 &setne (&LB("eax"));
45 &or ("esi","eax");
46 &cmp ("ecx",0x444D4163); # "cAMD"
47 &setne (&LB("eax"));
48 &or ("esi","eax"); # 0 indicates AMD CPU
49 &jnz (&label("intel"));
50
51 # AMD specific
52 &mov ("eax",0x80000000);
53 &cpuid ();
54 &cmp ("eax",0x80000008);
55 &jb (&label("intel"));
56
57 &mov ("eax",0x80000008);
58 &cpuid ();
59 &movz ("esi",&LB("ecx")); # number of cores - 1
60 &inc ("esi"); # number of cores
61
62 &mov ("eax",1);
63 &cpuid ();
64 &bt ("edx",28);
65 &jnc (&label("done"));
66 &shr ("ebx",16);
67 &and ("ebx",0xff);
68 &cmp ("ebx","esi");
69 &ja (&label("done"));
70 &and ("edx",0xefffffff); # clear hyper-threading bit
71 &jmp (&label("done"));
72
73&set_label("intel");
74 &cmp ("edi",4);
75 &mov ("edi",-1);
76 &jb (&label("nocacheinfo"));
77
78 &mov ("eax",4);
79 &mov ("ecx",0); # query L1D
80 &cpuid ();
81 &mov ("edi","eax");
82 &shr ("edi",14);
83 &and ("edi",0xfff); # number of cores -1 per L1D
84
85&set_label("nocacheinfo");
86 &mov ("eax",1);
87 &cpuid ();
88 &cmp ("ebp",0);
89 &jne (&label("notP4"));
90 &and (&HB("eax"),15); # familiy ID
91 &cmp (&HB("eax"),15); # P4?
92 &jne (&label("notP4"));
93 &or ("edx",1<<20); # use reserved bit to engage RC4_CHAR
94&set_label("notP4");
95 &bt ("edx",28); # test hyper-threading bit
96 &jnc (&label("done"));
97 &and ("edx",0xefffffff);
98 &cmp ("edi",0);
99 &je (&label("done"));
100
101 &or ("edx",0x10000000);
102 &shr ("ebx",16);
103 &cmp (&LB("ebx"),1);
104 &ja (&label("done"));
105 &and ("edx",0xefffffff); # clear hyper-threading bit if not
106&set_label("done");
107 &mov ("eax","edx");
108 &mov ("edx","ecx");
109&function_end("OPENSSL_ia32_cpuid");
110
111&external_label("OPENSSL_ia32cap_P");
112
113&function_begin_B("OPENSSL_rdtsc","EXTRN\t_OPENSSL_ia32cap_P:DWORD");
114 &xor ("eax","eax");
115 &xor ("edx","edx");
116 &picmeup("ecx","OPENSSL_ia32cap_P");
117 &bt (&DWP(0,"ecx"),4);
118 &jnc (&label("notsc"));
119 &rdtsc ();
120&set_label("notsc");
121 &ret ();
122&function_end_B("OPENSSL_rdtsc");
123
124# This works in Ring 0 only [read DJGPP+MS-DOS+privileged DPMI host],
125# but it's safe to call it on any [supported] 32-bit platform...
126# Just check for [non-]zero return value...
127&function_begin_B("OPENSSL_instrument_halt","EXTRN\t_OPENSSL_ia32cap_P:DWORD");
128 &picmeup("ecx","OPENSSL_ia32cap_P");
129 &bt (&DWP(0,"ecx"),4);
130 &jnc (&label("nohalt")); # no TSC
131
132 &data_word(0x9058900e); # push %cs; pop %eax
133 &and ("eax",3);
134 &jnz (&label("nohalt")); # not enough privileges
135
136 &pushf ();
137 &pop ("eax")
138 &bt ("eax",9);
139 &jnc (&label("nohalt")); # interrupts are disabled
140
141 &rdtsc ();
142 &push ("edx");
143 &push ("eax");
144 &halt ();
145 &rdtsc ();
146
147 &sub ("eax",&DWP(0,"esp"));
148 &sbb ("edx",&DWP(4,"esp"));
149 &add ("esp",8);
150 &ret ();
151
152&set_label("nohalt");
153 &xor ("eax","eax");
154 &xor ("edx","edx");
155 &ret ();
156&function_end_B("OPENSSL_instrument_halt");
157
158# Essentially there is only one use for this function. Under DJGPP:
159#
160# #include <go32.h>
161# ...
162# i=OPENSSL_far_spin(_dos_ds,0x46c);
163# ...
164# to obtain the number of spins till closest timer interrupt.
165
166&function_begin_B("OPENSSL_far_spin");
167 &pushf ();
168 &pop ("eax")
169 &bt ("eax",9);
170 &jnc (&label("nospin")); # interrupts are disabled
171
172 &mov ("eax",&DWP(4,"esp"));
173 &mov ("ecx",&DWP(8,"esp"));
174 &data_word (0x90d88e1e); # push %ds, mov %eax,%ds
175 &xor ("eax","eax");
176 &mov ("edx",&DWP(0,"ecx"));
177 &jmp (&label("spin"));
178
179 &align (16);
180&set_label("spin");
181 &inc ("eax");
182 &cmp ("edx",&DWP(0,"ecx"));
183 &je (&label("spin"));
184
185 &data_word (0x1f909090); # pop %ds
186 &ret ();
187
188&set_label("nospin");
189 &xor ("eax","eax");
190 &xor ("edx","edx");
191 &ret ();
192&function_end_B("OPENSSL_far_spin");
193
194&function_begin_B("OPENSSL_wipe_cpu","EXTRN\t_OPENSSL_ia32cap_P:DWORD");
195 &xor ("eax","eax");
196 &xor ("edx","edx");
197 &picmeup("ecx","OPENSSL_ia32cap_P");
198 &mov ("ecx",&DWP(0,"ecx"));
199 &bt (&DWP(0,"ecx"),1);
200 &jnc (&label("no_x87"));
201 if ($sse2) {
202 &bt (&DWP(0,"ecx"),26);
203 &jnc (&label("no_sse2"));
204 &pxor ("xmm0","xmm0");
205 &pxor ("xmm1","xmm1");
206 &pxor ("xmm2","xmm2");
207 &pxor ("xmm3","xmm3");
208 &pxor ("xmm4","xmm4");
209 &pxor ("xmm5","xmm5");
210 &pxor ("xmm6","xmm6");
211 &pxor ("xmm7","xmm7");
212 &set_label("no_sse2");
213 }
214 # just a bunch of fldz to zap the fp/mm bank followed by finit...
215 &data_word(0xeed9eed9,0xeed9eed9,0xeed9eed9,0xeed9eed9,0x90e3db9b);
216&set_label("no_x87");
217 &lea ("eax",&DWP(4,"esp"));
218 &ret ();
219&function_end_B("OPENSSL_wipe_cpu");
220
221&function_begin_B("OPENSSL_atomic_add");
222 &mov ("edx",&DWP(4,"esp")); # fetch the pointer, 1st arg
223 &mov ("ecx",&DWP(8,"esp")); # fetch the increment, 2nd arg
224 &push ("ebx");
225 &nop ();
226 &mov ("eax",&DWP(0,"edx"));
227&set_label("spin");
228 &lea ("ebx",&DWP(0,"eax","ecx"));
229 &nop ();
230 &data_word(0x1ab10ff0); # lock; cmpxchg %ebx,(%edx) # %eax is envolved and is always reloaded
231 &jne (&label("spin"));
232 &mov ("eax","ebx"); # OpenSSL expects the new value
233 &pop ("ebx");
234 &ret ();
235&function_end_B("OPENSSL_atomic_add");
236
237# This function can become handy under Win32 in situations when
238# we don't know which calling convention, __stdcall or __cdecl(*),
239# indirect callee is using. In C it can be deployed as
240#
241#ifdef OPENSSL_CPUID_OBJ
242# type OPENSSL_indirect_call(void *f,...);
243# ...
244# OPENSSL_indirect_call(func,[up to $max arguments]);
245#endif
246#
247# (*) it's designed to work even for __fastcall if number of
248# arguments is 1 or 2!
249&function_begin_B("OPENSSL_indirect_call");
250 {
251 my $i,$max=7; # $max has to be chosen as 4*n-1
252 # in order to preserve eventual
253 # stack alignment
254 &push ("ebp");
255 &mov ("ebp","esp");
256 &sub ("esp",$max*4);
257 &mov ("ecx",&DWP(12,"ebp"));
258 &mov (&DWP(0,"esp"),"ecx");
259 &mov ("edx",&DWP(16,"ebp"));
260 &mov (&DWP(4,"esp"),"edx");
261 for($i=2;$i<$max;$i++)
262 {
263 # Some copies will be redundant/bogus...
264 &mov ("eax",&DWP(12+$i*4,"ebp"));
265 &mov (&DWP(0+$i*4,"esp"),"eax");
266 }
267 &call_ptr (&DWP(8,"ebp"));# make the call...
268 &mov ("esp","ebp"); # ... and just restore the stack pointer
269 # without paying attention to what we called,
270 # (__cdecl *func) or (__stdcall *one).
271 &pop ("ebp");
272 &ret ();
273 }
274&function_end_B("OPENSSL_indirect_call");
275
276&function_begin_B("OPENSSL_cleanse");
277 &mov ("edx",&wparam(0));
278 &mov ("ecx",&wparam(1));
279 &xor ("eax","eax");
280 &cmp ("ecx",7);
281 &jae (&label("lot"));
282 &cmp ("ecx",0);
283 &je (&label("ret"));
284&set_label("little");
285 &mov (&BP(0,"edx"),"al");
286 &sub ("ecx",1);
287 &lea ("edx",&DWP(1,"edx"));
288 &jnz (&label("little"));
289&set_label("ret");
290 &ret ();
291
292&set_label("lot",16);
293 &test ("edx",3);
294 &jz (&label("aligned"));
295 &mov (&BP(0,"edx"),"al");
296 &lea ("ecx",&DWP(-1,"ecx"));
297 &lea ("edx",&DWP(1,"edx"));
298 &jmp (&label("lot"));
299&set_label("aligned");
300 &mov (&DWP(0,"edx"),"eax");
301 &lea ("ecx",&DWP(-4,"ecx"));
302 &test ("ecx",-4);
303 &lea ("edx",&DWP(4,"edx"));
304 &jnz (&label("aligned"));
305 &cmp ("ecx",0);
306 &jne (&label("little"));
307 &ret ();
308&function_end_B("OPENSSL_cleanse");
309
310&initseg("OPENSSL_cpuid_setup");
311
312&asm_finish();
generated by cgit v1.2.3-55-g6feb (git 2.39.1) at 2025-11-23 22:31:49 +0000