On March 15, 2022 3:42 PM, Ni Ray wrote: > + > +%macro tdcall 0 > + db 0x66,0x0f,0x01,0xcc > +%endmacro > > 1. can you please check whether the tdcall instruction is supported by latest > NASM compiler? I checked the NASM (2.15.05) doc https://www.nasm.us/xdoc/2.15.05/html/nasmdocb.html#section-B.1 but not find the tdcall instruction. > > > + AsmCpuid (CPUID_VERSION_INFO, NULL, NULL, &Ecx, NULL); > + if ((Ecx & BIT31) == 0) { > > 2. Can you please update CPUID_VERSION_INFO_ECX in > MdePkg/Include/Regiter/Intel/Cpuid.h for the BIT31? Sure. It will be updated in the next version. > > + break; > + } > + > + if (LargestEax < 0x21) { > + break; > + } > + > + AsmCpuidEx (0x21, 0, &Eax, &Ebx, &Ecx, &Edx); > + if ( (Ebx != SIGNATURE_32 ('I', 'n', 't', 'e')) > + || (Edx != SIGNATURE_32 ('l', 'T', 'D', 'X')) > + || (Ecx != SIGNATURE_32 (' ', ' ', ' ', ' '))) > + { > + break; > + } > + > > 3. Similar comment as #2. Sure. It will be updated in the next version. > > > +%macro tdcall 0 > + db 0x66,0x0f,0x01,0xcc > +%endmacro > > 4. similar comment as #1. See my answer to comment #1.
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