&set_label("nocacheinfo");
&mov ("eax",1);
&cpuid ();
+ &and ("edx",0xbfefffff); # force reserved bits #20, #30 to 0
&cmp ("ebp",0);
- &jne (&label("notP4"));
+ &jne (&label("notintel"));
+ &or ("edx",1<<30); # set reserved bit#30 on Intel CPUs
&and (&HB("eax"),15); # familiy ID
&cmp (&HB("eax"),15); # P4?
- &jne (&label("notP4"));
- &or ("edx",1<<20); # use reserved bit to engage RC4_CHAR
-&set_label("notP4");
+ &jne (&label("notintel"));
+ &or ("edx",1<<20); # set reserved bit#20 to engage RC4_CHAR
+&set_label("notintel");
&bt ("edx",28); # test hyper-threading bit
&jnc (&label("generic"));
&and ("edx",0xefffffff);
&set_label("generic");
&and ("ebp",1<<11); # isolate AMD XOP flag
- &and ("ecx",~(1<<11));
+ &and ("ecx",0xfffff7ff); # force 11th bit to 0
&mov ("esi","edx");
&or ("ebp","ecx"); # merge AMD XOP flag
&cmp ("eax",2);
&je (&label("clear_avx"));
&set_label("clear_xmm");
- &and ("ebp",~(1<<25|1<<1)); # clear AESNI and PCLMULQDQ bits
- &and ("esi",~(1<<24)); # clear FXSR
+ &and ("ebp",0xfdfffffd); # clear AESNI and PCLMULQDQ bits
+ &and ("esi",0xfeffffff); # clear FXSR
&set_label("clear_avx");
- &and ("ebp",~(1<<28|1<<12|1<<11));# clear AVX, FMA and AMD XOP bits
+ &and ("ebp",0xefffe7ff); # clear AVX, FMA and AMD XOP bits
&set_label("done");
&mov ("eax","esi");
&mov ("edx","ebp");
&function_end("OPENSSL_instrument_bus2");
}
+&function_begin_B("OPENSSL_ia32_rdrand");
+ &mov ("ecx",8);
+&set_label("loop");
+ &rdrand ("eax");
+ &jc (&label("break"));
+ &loop (&label("loop"));
+&set_label("break");
+ &cmp ("eax",0);
+ &cmove ("eax","ecx");
+ &ret ();
+&function_end_B("OPENSSL_ia32_rdrand");
+
&initseg("OPENSSL_cpuid_setup");
&asm_finish();