&jmp (&label("generic"));
&set_label("intel");
+ &cmp ("edi",7);
+ &jb (&label("cacheinfo"));
+
+ &mov ("esi",&wparam(0));
+ &mov ("eax",7);
+ &xor ("ecx","ecx");
+ &cpuid ();
+ &mov (&DWP(8,"esi"),"ebx");
+
+&set_label("cacheinfo");
&cmp ("edi",4);
&mov ("edi",-1);
&jb (&label("nocacheinfo"));
&shr ("edi",14);
&and ("edi",0xfff); # number of cores -1 per L1D
- &cmp ("edi",7);
- &jb (&label("nocacheinfo"));
-
- &mov ("esi",&wparam(0));
- &mov ("eax",7);
- &xor ("ecx","ecx");
- &cpuid ();
- &mov (&DWP(8,"esi"),"ebx");
-
&set_label("nocacheinfo");
&mov ("eax",1);
&xor ("ecx","ecx");
&ret ();
&function_end_B("OPENSSL_rdtsc");
-# This works in Ring 0 only [read DJGPP+MS-DOS+privileged DPMI host],
+# This works in Ring 0 only [read MS-DOS+privileged DPMI host],
# but it's safe to call it on any [supported] 32-bit platform...
# Just check for [non-]zero return value...
&function_begin_B("OPENSSL_instrument_halt","EXTRN\t_OPENSSL_ia32cap_P:DWORD");
&ret ();
&function_end_B("OPENSSL_instrument_halt");
-# Essentially there is only one use for this function. Under DJGPP:
-#
-# #include <go32.h>
-# ...
-# i=OPENSSL_far_spin(_dos_ds,0x46c);
-# ...
-# to obtain the number of spins till closest timer interrupt.
-
-&function_begin_B("OPENSSL_far_spin");
- &pushf ();
- &pop ("eax");
- &bt ("eax",9);
- &jnc (&label("nospin")); # interrupts are disabled
-
- &mov ("eax",&DWP(4,"esp"));
- &mov ("ecx",&DWP(8,"esp"));
- &data_word (0x90d88e1e); # push %ds, mov %eax,%ds
- &xor ("eax","eax");
- &mov ("edx",&DWP(0,"ecx"));
- &jmp (&label("spin"));
-
- &align (16);
-&set_label("spin");
- &inc ("eax");
- &cmp ("edx",&DWP(0,"ecx"));
- &je (&label("spin"));
-
- &data_word (0x1f909090); # pop %ds
- &ret ();
-
-&set_label("nospin");
- &xor ("eax","eax");
- &xor ("edx","edx");
- &ret ();
-&function_end_B("OPENSSL_far_spin");
&function_begin_B("OPENSSL_wipe_cpu","EXTRN\t_OPENSSL_ia32cap_P:DWORD");
&xor ("eax","eax");
&ret ();
&function_end_B("OPENSSL_ia32_rdrand");
+&function_begin_B("OPENSSL_ia32_rdseed");
+ &mov ("ecx",8);
+&set_label("loop");
+ &rdseed ("eax");
+ &jc (&label("break"));
+ &loop (&label("loop"));
+&set_label("break");
+ &cmp ("eax",0);
+ &cmove ("eax","ecx");
+ &ret ();
+&function_end_B("OPENSSL_ia32_rdseed");
+
&initseg("OPENSSL_cpuid_setup");
&hidden("OPENSSL_cpuid_setup");