aboutsummaryrefslogtreecommitdiff
path: root/openssl/times/x86/casts.cpp
diff options
context:
space:
mode:
Diffstat (limited to 'openssl/times/x86/casts.cpp')
-rw-r--r--openssl/times/x86/casts.cpp67
1 files changed, 67 insertions, 0 deletions
diff --git a/openssl/times/x86/casts.cpp b/openssl/times/x86/casts.cpp
new file mode 100644
index 000000000..7661191ac
--- /dev/null
+++ b/openssl/times/x86/casts.cpp
@@ -0,0 +1,67 @@
+//
+// gettsc.inl
+//
+// gives access to the Pentium's (secret) cycle counter
+//
+// This software was written by Leonard Janke (janke@unixg.ubc.ca)
+// in 1996-7 and is entered, by him, into the public domain.
+
+#if defined(__WATCOMC__)
+void GetTSC(unsigned long&);
+#pragma aux GetTSC = 0x0f 0x31 "mov [edi], eax" parm [edi] modify [edx eax];
+#elif defined(__GNUC__)
+inline
+void GetTSC(unsigned long& tsc)
+{
+ asm volatile(".byte 15, 49\n\t"
+ : "=eax" (tsc)
+ :
+ : "%edx", "%eax");
+}
+#elif defined(_MSC_VER)
+inline
+void GetTSC(unsigned long& tsc)
+{
+ unsigned long a;
+ __asm _emit 0fh
+ __asm _emit 31h
+ __asm mov a, eax;
+ tsc=a;
+}
+#endif
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <openssl/cast.h>
+
+void main(int argc,char *argv[])
+ {
+ CAST_KEY key;
+ unsigned long s1,s2,e1,e2;
+ unsigned long data[2];
+ int i,j;
+
+ for (j=0; j<6; j++)
+ {
+ for (i=0; i<1000; i++) /**/
+ {
+ CAST_encrypt(&data[0],&key);
+ GetTSC(s1);
+ CAST_encrypt(&data[0],&key);
+ CAST_encrypt(&data[0],&key);
+ CAST_encrypt(&data[0],&key);
+ GetTSC(e1);
+ GetTSC(s2);
+ CAST_encrypt(&data[0],&key);
+ CAST_encrypt(&data[0],&key);
+ CAST_encrypt(&data[0],&key);
+ CAST_encrypt(&data[0],&key);
+ GetTSC(e2);
+ CAST_encrypt(&data[0],&key);
+ }
+
+ printf("cast %d %d (%d)\n",
+ e1-s1,e2-s2,((e2-s2)-(e1-s1)));
+ }
+ }
+