&pushf ();
&pop ("eax");
&xor ("ecx","eax");
- &bt ("ecx",21);
- &jnc (&label("generic"));
&xor ("eax","eax");
+ &bt ("ecx",21);
+ &jnc (&label("nocpuid"));
&cpuid ();
&mov ("edi","eax"); # max value for standard query level
&mov ("esi","edx");
&or ("ebp","ecx"); # merge AMD XOP flag
- &bt ("ecx",26); # check XSAVE bit
- &jnc (&label("done"));
&bt ("ecx",27); # check OSXSAVE bit
- &jnc (&label("clear_xmm"));
+ &jnc (&label("clear_avx"));
&xor ("ecx","ecx");
&data_byte(0x0f,0x01,0xd0); # xgetbv
&and ("eax",6);
&set_label("done");
&mov ("eax","esi");
&mov ("edx","ebp");
+&set_label("nocpuid");
&function_end("OPENSSL_ia32_cpuid");
&external_label("OPENSSL_ia32cap_P");
&ret ();
&function_end_B("OPENSSL_cleanse");
+&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();