edx                51 core/ngx_cpuinfo.c     uint32_t  eax, ebx, ecx, edx;
edx                57 core/ngx_cpuinfo.c     : "=a" (eax), "=b" (ebx), "=c" (ecx), "=d" (edx) : "a" (i) );
edx                61 core/ngx_cpuinfo.c     buf[2] = edx;