static int get_vendor(void){
int eax, ebx, ecx, edx;
union
{
char vchar[16];
int vint[4];
} vendor;
cpuid(0, &eax, &ebx, &ecx, &edx);
*(&vendor.vint[0]) = ebx;
*(&vendor.vint[1]) = edx;
*(&vendor.vint[2]) = ecx;
vendor.vchar[12] = '\0';
if (!strcmp(vendor.vchar, "GenuineIntel")) return VENDOR_INTEL;
if (!strcmp(vendor.vchar, "AuthenticAMD")) return VENDOR_AMD;
if (!strcmp(vendor.vchar, "CentaurHauls")) return VENDOR_CENTAUR;
if ((eax == 0) || ((eax & 0x500) != 0)) return VENDOR_INTEL;
return VENDOR_UNKNOWN;
}
static void cpuid_smp_cpuid(void *cmd_block)
{
struct cpuid_command *cmd = (struct cpuid_command *)cmd_block;
cpuid(cmd->reg, &cmd->data[0], &cmd->data[1], &cmd->data[2],
&cmd->data[3]);
}
int get_vendor(void){
int eax, ebx, ecx, edx;
char vendor[13];
cpuid(0, &eax, &ebx, &ecx, &edx);
*(int *)(&vendor[0]) = ebx;
*(int *)(&vendor[4]) = edx;
*(int *)(&vendor[8]) = ecx;
vendor[12] = (char)0;
if (!strcmp(vendor, "GenuineIntel")) return VENDOR_INTEL;
if (!strcmp(vendor, " UMC UMC UMC")) return VENDOR_UMC;
if (!strcmp(vendor, "AuthenticAMD")) return VENDOR_AMD;
if (!strcmp(vendor, "CyrixInstead")) return VENDOR_CYRIX;
if (!strcmp(vendor, "NexGenDriven")) return VENDOR_NEXGEN;
if (!strcmp(vendor, "CentaurHauls")) return VENDOR_CENTAUR;
if (!strcmp(vendor, "RiseRiseRise")) return VENDOR_RISE;
if (!strcmp(vendor, " SiS SiS SiS")) return VENDOR_SIS;
if (!strcmp(vendor, "GenuineTMx86")) return VENDOR_TRANSMETA;
if (!strcmp(vendor, "Geode by NSC")) return VENDOR_NSC;
if ((eax == 0) || ((eax & 0x500) != 0)) return VENDOR_INTEL;
return VENDOR_UNKNOWN;
}
static __inline__ int get_l3_size(void){
int eax, ebx, ecx, edx;
cpuid(0x80000006, &eax, &ebx, &ecx, &edx);
return BITMASK(edx, 18, 0x3fff) * 512;
}
static word32 cpuid_flag(word32 leaf, word32 sub, word32 num, word32 bit) {
int got_intel_cpu=0;
unsigned int reg[5];
reg[4] = '\0' ;
cpuid(reg, 0, 0);
if(XMEMCMP((char *)&(reg[EBX]), "Genu", 4) == 0 &&
XMEMCMP((char *)&(reg[EDX]), "ineI", 4) == 0 &&
XMEMCMP((char *)&(reg[ECX]), "ntel", 4) == 0) {
got_intel_cpu = 1;
}
if (got_intel_cpu) {
cpuid(reg, leaf, sub);
return((reg[num]>>bit)&0x1) ;
}
return 0 ;
}
static void cpuid_init( ) {
if (!cpuid_done) {
cpuid(0x1, cpuid_ecx, cpuid_edx);
cpuid_done = true;
print_cpu_info( );
}
}
static void cpuid_smp_cpuid(void *cmd_block)
{
struct cpuid_command *cmd = (struct cpuid_command *)cmd_block;
if (cmd->cpu == smp_processor_id())
cpuid(cmd->reg, &cmd->data[0], &cmd->data[1], &cmd->data[2],
&cmd->data[3]);
}
void slave_main(void)
{
send(MSIM_MASTER_ID, 0, 4);
set_trap_handler();
tlb_init();
kprintf("--DEBUG-- Hello world from CPU #%d!\n", cpuid());
for (;;);
}
/*
* is_cpu_clflush_present -- checks if CLFLUSH instruction is supported
*/
int is_cpu_clflush_present(void) {
unsigned cpuinfo[4] = {0};
cpuid(0x1, 0x0, cpuinfo);
int ret = (cpuinfo[EDX_IDX] & bit_CLFLUSH) != 0;
return ret;
}
inline static bool is_sse2_available()
{
#if (defined(__x86_64__) || defined(__amd64))
return true;
#endif
int a,b,c,d;
cpuid(1, a, b, c, d);
return d & (1<<26); // edx bit 26 is set when SSE2 is present
}
static int core2_get_pmc_count(void)
{
u32 eax, ebx, ecx, edx;
if ( arch_pmc_cnt == 0 )
{
cpuid(0xa, &eax, &ebx, &ecx, &edx);
arch_pmc_cnt = (eax & 0xff00) >> 8;
}
inline
cpu_info::
cpu_info()
{
constexpr std::uint32_t SSE42 = 1 << 20;
std::uint32_t eax = 0;
std::uint32_t ebx = 0;
std::uint32_t ecx = 0;
std::uint32_t edx = 0;
cpuid(0, eax, ebx, ecx, edx);
if(eax >= 1)
{
cpuid(1, eax, ebx, ecx, edx);
sse42 = (ecx & SSE42) != 0;
}
}
ogg_uint32_t oc_cpu_flags_get(void){
ogg_uint32_t flags;
ogg_uint32_t eax;
ogg_uint32_t ebx;
ogg_uint32_t ecx;
ogg_uint32_t edx;
# if !defined(__amd64__)&&!defined(__x86_64__)
/*Not all x86-32 chips support cpuid, so we have to check.*/
__asm__ __volatile__(
"pushfl\n\t"
"pushfl\n\t"
"popl %[a]\n\t"
"movl %[a],%[b]\n\t"
"xorl $0x200000,%[a]\n\t"
"pushl %[a]\n\t"
"popfl\n\t"
"pushfl\n\t"
"popl %[a]\n\t"
"popfl\n\t"
:[a]"=r"(eax),[b]"=r"(ebx)
:
:"cc"
);
/*No cpuid.*/
if(eax==ebx)return 0;
# endif
cpuid(0,eax,ebx,ecx,edx);
/* l e t n I e n i u n e G*/
if(ecx==0x6C65746E&&edx==0x49656E69&&ebx==0x756E6547||
/* 6 8 x M T e n i u n e G*/
ecx==0x3638784D&&edx==0x54656E69&&ebx==0x756E6547){
int family;
int model;
/*Intel, Transmeta (tested with Crusoe TM5800):*/
cpuid(1,eax,ebx,ecx,edx);
flags=oc_parse_intel_flags(edx,ecx);
family=(eax>>8)&0xF;
model=(eax>>4)&0xF;
/*The SSE unit on the Pentium M and Core Duo is much slower than the MMX
unit, so don't use it.*/
if(family==6&&(model==9||model==13||model==14)){
flags&=~(OC_CPU_X86_SSE2|OC_CPU_X86_PNI);
}
}
void cpu_info()
{
char idstr[64];
idstr[0] = 0;
fillCpuString(idstr);
trim(idstr);
unsigned cpuver = cpuid(1,0);
unsigned features = cpuid(1,1);
temp.mmx = (features >> 23) & 1;
temp.sse = (features >> 25) & 1;
temp.sse2 = (features >> 26) & 1;
temp.cpufq = GetCPUFrequency();
color(CONSCLR_HARDITEM); printf("cpu: ");
color(CONSCLR_HARDINFO);
printf("%s ", idstr);
color(CONSCLR_HARDITEM);
printf("%d.%d.%d [MMX:%s,SSE:%s,SSE2:%s] ",
(cpuver>>8) & 0x0F, (cpuver>>4) & 0x0F, cpuver & 0x0F,
temp.mmx ? "YES" : "NO",
temp.sse ? "YES" : "NO",
temp.sse2 ? "YES" : "NO");
color(CONSCLR_HARDINFO);
printf("at %d MHz\n", (unsigned)(temp.cpufq/1000000));
#ifdef MOD_SSE2
if (!temp.sse2) {
color(CONSCLR_WARNING);
printf("warning: this is an SSE2 build, recompile or download non-P4 version\n");
}
#else //MOD_SSE2
if (temp.sse2) {
color(CONSCLR_WARNING);
printf("warning: SSE2 disabled in compile-time, recompile or download P4 version\n");
}
#endif
}
static void __init setup_boot_cpu_data(void)
{
int dummy, eax;
/* get vendor info */
cpuid(0, &boot_cpu_data.cpuid_level,
(int *)&boot_cpu_data.x86_vendor_id[0],
(int *)&boot_cpu_data.x86_vendor_id[8],
(int *)&boot_cpu_data.x86_vendor_id[4]);
/* get cpu type */
cpuid(1, &eax, &dummy, &dummy, (int *) &boot_cpu_data.x86_capability);
boot_cpu_data.x86 = (eax >> 8) & 0xf;
boot_cpu_data.x86_model = (eax >> 4) & 0xf;
boot_cpu_data.x86_mask = eax & 0xf;
/* Also determine cpu vendor */
get_cpu_vendor(&boot_cpu_data);
}
static void
calibrate_tsc(void)
{
if (0) {
u32 eax, ebx, ecx, edx, cpuid_features = 0;
cpuid(0, &eax, &ebx, &ecx, &edx);
if (eax > 0)
cpuid(1, &eax, &ebx, &ecx, &cpuid_features);
if (!(cpuid_features & CPUID_TSC)) {
SET_GLOBAL(no_tsc, 1);
SET_GLOBAL(cpu_khz, PIT_TICK_RATE / 1000);
dprintf(3, "386/486 class CPU. Using TSC emulation\n");
return;
}
// Setup "timer2"
u8 orig = inb(PORT_PS2_CTRLB);
outb((orig & ~PPCB_SPKR) | PPCB_T2GATE, PORT_PS2_CTRLB);
/* binary, mode 0, LSB/MSB, Ch 2 */
outb(PM_SEL_TIMER2|PM_ACCESS_WORD|PM_MODE0|PM_CNT_BINARY, PORT_PIT_MODE);
/* LSB of ticks */
outb(CALIBRATE_COUNT & 0xFF, PORT_PIT_COUNTER2);
/* MSB of ticks */
outb(CALIBRATE_COUNT >> 8, PORT_PIT_COUNTER2);
u64 start = rdtscll();
while ((inb(PORT_PS2_CTRLB) & PPCB_T2OUT) == 0)
;
u64 end = rdtscll();
// Restore PORT_PS2_CTRLB
outb(orig, PORT_PS2_CTRLB);
// Store calibrated cpu khz.
u64 diff = end - start;
dprintf(6, "tsc calibrate start=%u end=%u diff=%u\n"
, (u32)start, (u32)end, (u32)diff);
u32 hz = diff * PIT_TICK_RATE / CALIBRATE_COUNT;
SET_GLOBAL(cpu_khz, hz / 1000);
dprintf(1, "CPU Mhz=%u\n", hz / 1000000);
}
int
arch_support_sse2(void)
{
unsigned int eax, ebx, ecx, edx;
cpuid(1, &eax, &ebx, &ecx, &edx);
/* Return non-zero if SSE2 is supported */
return edx & 0x4000000;
}
void arch_hvm_save(struct domain *d, struct hvm_save_header *hdr)
{
uint32_t eax, ebx, ecx, edx;
/* Save some CPUID bits */
cpuid(1, &eax, &ebx, &ecx, &edx);
hdr->cpuid = eax;
hdr->pad0 = 0;
}
int DST_InitDecoder(ebunch * D, int NrOfChannels, int SampleRate)
{
int retval = 0;
memset(D, 0, sizeof(ebunch));
D->FrameHdr.NrOfChannels = NrOfChannels;
/* 64FS => 4704 */
/* 128FS => 9408 */
/* 256FS => 18816 */
D->FrameHdr.MaxFrameLen = (588 * SampleRate / 8);
D->FrameHdr.ByteStreamLen = D->FrameHdr.MaxFrameLen * D->FrameHdr.NrOfChannels;
D->FrameHdr.BitStreamLen = D->FrameHdr.ByteStreamLen * RESOL;
D->FrameHdr.NrOfBitsPerCh = D->FrameHdr.MaxFrameLen * RESOL;
D->FrameHdr.MaxNrOfFilters = 2 * D->FrameHdr.NrOfChannels;
D->FrameHdr.MaxNrOfPtables = 2 * D->FrameHdr.NrOfChannels;
D->FrameHdr.FrameNr = 0;
D->StrFilter.TableType = FILTER;
D->StrPtable.TableType = PTABLE;
if (retval==0)
{
AllocateDecMemory(D);
}
if (retval==0)
{
retval = CCP_CalcInit(&D->StrFilter);
}
if (retval==0)
{
retval = CCP_CalcInit(&D->StrPtable);
}
D->SSE2 = 0;
#if !defined(NO_SSE2) && (defined(_M_IX86) || defined(_M_X64) || defined(__i386__) || defined(__x86_64__))
{
int CPUInfo[4];
#if defined(__i386__) || defined(__x86_64__)
#define cpuid(type, a, b, c, d) \
__asm__ ("cpuid":\
"=a" (a), "=b" (b), "=c" (c), "=d" (d) : "a" (type));
cpuid(1, CPUInfo[0], CPUInfo[1], CPUInfo[2], CPUInfo[3]);
#else
__cpuid(CPUInfo, 1);
#endif
D->SSE2 = (CPUInfo[3] & (1L << 26)) ? 1 : 0;
}
#endif
return(retval);
}
// void getPsrInfo(VM_Version::CpuidInfo* cpuid_info);
address generate_getPsrInfo() {
StubCodeMark mark(this, "VM_Version", "getPsrInfo_stub");
# define __ _masm->
address start = __ pc();
// rbx is callee-save on both unix and windows
// rcx and rdx are first and second argument registers on windows
__ pushq(rbx);
__ movq(r8, rarg0);
__ xorl(rax, rax);
__ cpuid();
__ leaq(r9, Address(r8, in_bytes(VM_Version::std_cpuid0_offset())));
__ movl(Address(r9, 0), rax);
__ movl(Address(r9, 4), rbx);
__ movl(Address(r9, 8), rcx);
__ movl(Address(r9, 12), rdx);
__ movl(rax, 1);
__ cpuid();
__ leaq(r9, Address(r8, in_bytes(VM_Version::std_cpuid1_offset())));
__ movl(Address(r9, 0), rax);
__ movl(Address(r9, 4), rbx);
__ movl(Address(r9, 8), rcx);
__ movl(Address(r9, 12), rdx);
__ movl(rax, 0x80000001);
__ cpuid();
__ leaq(r9, Address(r8, in_bytes(VM_Version::ext_cpuid1_offset())));
__ movl(Address(r9, 0), rax);
__ movl(Address(r9, 4), rbx);
__ movl(Address(r9, 8), rcx);
__ movl(Address(r9, 12), rdx);
__ popq(rbx);
__ ret(0);
return start;
}
/*
* is_cpu_pcommit_present -- checks if PCOMMIT instruction is supported
*/
int is_cpu_pcommit_present(void) {
unsigned cpuinfo[4] = {0};
if (!is_cpu_genuine_intel()) return 0;
cpuid(0x7, 0x0, cpuinfo);
int ret = (cpuinfo[EBX_IDX] & bit_PCOMMIT) != 0;
return ret;
}
int cpuid_PMC_num()
{
uint32_t eax, ebx, ecx, edx;
int leaf = 10; // 0A
cpuid(leaf, &eax, &ebx, &ecx, &edx);
return MASK_VAL(eax, 15, 8); // This value tells which PMC's are available
// If it is > 3 then up to PMC3 is usable
// ...
// If > 0 then PMC0 is usable
// If == 0, then none are usable
}
int main(int argc, char **argv)
{
unsigned long eax, ebx, ecx, edx;
cpuid(0);
printf("identification: \"%.4s%.4s%.4s\"\n", (char *)&ebx, (char *)&edx, (char *)&ecx);
printf("cpu information:\n");
cpuid(1);
printf(" family %ld model %ld stepping %ld efamily %ld emodel %ld\n",
b(eax, 8, 11), b(eax, 4, 7), b(eax, 0, 3), b(eax, 20, 27), b(eax, 16, 19));
printf(" brand %ld cflush sz %ld*8 nproc %ld apicid %ld\n",
b(ebx, 0, 7), b(ebx, 8, 15), b(ebx, 16, 23), b(ebx, 24, 31));
cpuid(0x80000006);
printf("L1 cache size (per core): %ld KB\n", b(ecx, 16, 31));
return(0);
}
uint64_t get_microcode_version(void)
{
uint64_t val;
uint32_t eax, ebx, ecx, edx;
msr_write(MSR_IA32_BIOS_SIGN_ID, 0U);
cpuid(CPUID_FEATURES, &eax, &ebx, &ecx, &edx);
val = msr_read(MSR_IA32_BIOS_SIGN_ID);
return val;
}
bool HvmIsImplemented(void)
{
uint32_t eax, ebx, ecx, edx;
cpuid(0, &eax, &ebx, &ecx, &edx);
if (eax < 1)
{
cprintf("HvmIsImplemented(): Extended CPUID functions not implemented\n");
return FALSE;
}
if (!(ebx == 0x756e6547 && ecx == 0x6c65746e && edx == 0x49656e69))
{
cprintf("HvmIsImplemented(): Not an INTEL processor\n");
return FALSE;
}
// intel cpu use fun_0x1 to test VMX.
// CPUID.1:ECX.VMX[bit 5] = 1
cpuid(0x1, &eax, &ebx, &ecx, &edx);
return (bool) (CmIsBitSet (ecx, 5));
}
void base_cpu_init(void)
{
/* Detect the current processor. */
cpuid(&base_cpuid);
/* Initialize the processor tables. */
base_trap_init();
base_irq_init();
base_gdt_init();
base_tss_init();
}
static uint8_t
check_apic_avail (void)
{
cpuid_ret_t cp;
struct cpuid_feature_flags * flags;
cpuid(CPUID_FEATURE_INFO, &cp);
flags = (struct cpuid_feature_flags *)&cp.c;
return flags->edx.apic;
}
static void setup_boot_cpu_data(void)
{
int dummy, eax;
/* get vendor info */
cpuid(0, &boot_cpu_data.cpuid_level,
(int *)&boot_cpu_data.x86_vendor_id[0],
(int *)&boot_cpu_data.x86_vendor_id[8],
(int *)&boot_cpu_data.x86_vendor_id[4]);
/* get cpu type
* &dummy, &boot_cpu_data.x86_capability); gets a warning
* because this address is bigger than 4GB, but we fortunately still
* have the V=R mapping.
*/
cpuid(1, &eax, &dummy, &dummy, &boot_cpu_data.x86_capability[0]);
boot_cpu_data.x86 = (eax >> 8) & 0xf;
boot_cpu_data.x86_model = (eax >> 4) & 0xf;
boot_cpu_data.x86_mask = eax & 0xf;
}
static void init() {
// TODO: Chrome's not linking _sse* opts on iOS simulator builds. Bug or feature?
#if defined(SK_CPU_X86) && !defined(SK_BUILD_FOR_IOS)
uint32_t abcd[] = {0,0,0,0};
cpuid(abcd);
if (abcd[2] & (1<< 9)) { Init_ssse3(); }
if (abcd[2] & (1<<19)) { Init_sse41(); }
#elif !defined(SK_ARM_HAS_NEON) && defined(SK_CPU_ARM32) && defined(SK_BUILD_FOR_ANDROID)
if (android_getCpuFeatures() & ANDROID_CPU_ARM_FEATURE_NEON) { Init_neon(); }
#endif
}
int main (int argc, char **argv)
{
int eax,ebx,ecx,edx;
cpuid(0x1,eax,ebx,ecx,edx);
fprintf(stdout,"%s", (edx>>25)&1?"SSE ":"");
fprintf(stdout,"%s", (edx>>26)&1?"SSE2 ":"");
fprintf(stdout,"%s", (ecx)&1?"SSE3 ":"");
fprintf(stdout,"%s", (ecx>>19)&1?"SSE4.1 ":"");
fprintf(stdout,"%s", (ecx>>20)&1?"SSE4.2 ":"");
fprintf(stdout,"\n");
}