Move TOOLS/cpuinfo.c into the root directory.

git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@22950 b3059339-0415-0410-9bf9-f77b7e298cf2

1 files changed, 330 insertions, 0 deletions

diff --git a/cpuinfo.c b/cpuinfo.c
new file mode 100644
index 0000000000..50517696f9
--- /dev/null
+++ b/cpuinfo.c
@@ -0,0 +1,330 @@
+/* small utility to extract CPU information
+   Used by configure to set CPU optimization levels on some operating
+   systems where /proc/cpuinfo is non-existent or unreliable. */
+
+#include <stdio.h>
+#include <sys/time.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+
+#if defined(__MINGW32__) && (__MINGW32_MAJOR_VERSION <= 3) && (__MINGW32_MINOR_VERSION < 10)
+#include <sys/timeb.h>
+void gettimeofday(struct timeval* t,void* timezone) {
+  struct timeb timebuffer;
+  ftime( &timebuffer );
+  t->tv_sec=timebuffer.time;
+  t->tv_usec=1000*timebuffer.millitm;
+}
+#endif
+#ifdef __MINGW32__
+#define MISSING_USLEEP
+#include <windows.h>
+#define sleep(t) Sleep(1000*t);
+#endif
+
+#ifdef __BEOS__
+#define usleep(t) snooze(t)
+#endif
+
+#ifdef M_UNIX
+typedef long long int64_t;
+#define MISSING_USLEEP
+#else
+#include <inttypes.h>
+#endif
+
+#define CPUID_FEATURE_DEF(bit, desc, description) \
+  { bit, desc }
+
+typedef struct cpuid_regs {
+  unsigned int eax;
+  unsigned int ebx;
+  unsigned int ecx;
+  unsigned int edx;
+} cpuid_regs_t;
+
+static cpuid_regs_t
+cpuid(int func) {
+  cpuid_regs_t regs;
+#define CPUID   ".byte 0x0f, 0xa2; "
+#ifdef __x86_64__
+  asm("mov %%rbx, %%rsi\n\t"
+#else
+  asm("mov %%ebx, %%esi\n\t" 
+#endif
+      CPUID"\n\t"
+#ifdef __x86_64__
+      "xchg %%rsi, %%rbx\n\t"
+#else
+      "xchg %%esi, %%ebx\n\t"
+#endif
+      : "=a" (regs.eax), "=S" (regs.ebx), "=c" (regs.ecx), "=d" (regs.edx)
+      : "0" (func));
+  return regs;
+}
+
+
+static int64_t
+rdtsc(void)
+{
+  uint64_t i;
+#define RDTSC   ".byte 0x0f, 0x31; "
+  asm volatile (RDTSC : "=A"(i) : );
+  return i;
+}
+
+static const char*
+brandname(int i)
+{
+  const static char* brandmap[] = {
+    NULL,
+    "Intel(R) Celeron(R) processor",
+    "Intel(R) Pentium(R) III processor",
+    "Intel(R) Pentium(R) III Xeon(tm) processor",
+    "Intel(R) Pentium(R) III processor",
+    NULL,
+    "Mobile Intel(R) Pentium(R) III processor-M",
+    "Mobile Intel(R) Celeron(R) processor"
+  };
+
+  if (i >= sizeof(brandmap))
+    return NULL;
+  else
+    return brandmap[i];
+}
+
+static void
+store32(char *d, unsigned int v)
+{
+  d[0] =  v        & 0xff;
+  d[1] = (v >>  8) & 0xff;
+  d[2] = (v >> 16) & 0xff;
+  d[3] = (v >> 24) & 0xff;
+}
+
+
+int
+main(int argc, char **argv)
+{
+  cpuid_regs_t regs, regs_ext;
+  char idstr[13];
+  unsigned max_cpuid;
+  unsigned max_ext_cpuid;
+  unsigned int amd_flags;
+  unsigned int amd_flags2;
+  const char *model_name = NULL;
+  int i;
+  char processor_name[49];
+
+  regs = cpuid(0);
+  max_cpuid = regs.eax;
+  /* printf("%d CPUID function codes\n", max_cpuid+1); */
+
+  store32(idstr+0, regs.ebx);
+  store32(idstr+4, regs.edx);
+  store32(idstr+8, regs.ecx);
+  idstr[12] = 0;
+  printf("vendor_id\t: %s\n", idstr); 
+
+  regs_ext = cpuid((1<<31) + 0);
+  max_ext_cpuid = regs_ext.eax;
+  if (max_ext_cpuid >= (1<<31) + 1) {
+    regs_ext = cpuid((1<<31) + 1);
+    amd_flags = regs_ext.edx;
+    amd_flags2 = regs_ext.ecx;
+
+    if (max_ext_cpuid >= (1<<31) + 4) {
+      for (i = 2; i <= 4; i++) {
+        regs_ext = cpuid((1<<31) + i);
+        store32(processor_name + (i-2)*16, regs_ext.eax);
+        store32(processor_name + (i-2)*16 + 4, regs_ext.ebx);
+        store32(processor_name + (i-2)*16 + 8, regs_ext.ecx);
+        store32(processor_name + (i-2)*16 + 12, regs_ext.edx);
+      }
+      processor_name[48] = 0;
+      model_name = processor_name;
+      while (*model_name == ' ') {
+        model_name++;
+      }
+    }
+  } else {
+    amd_flags = 0;
+    amd_flags2 = 0;
+  }
+
+  if (max_cpuid >= 1) {
+    static struct {
+      int bit;
+      char *desc;
+    } cap[] = {
+      CPUID_FEATURE_DEF(0, "fpu", "Floating-point unit on-chip"),
+      CPUID_FEATURE_DEF(1, "vme", "Virtual Mode Enhancements"),
+      CPUID_FEATURE_DEF(2, "de", "Debugging Extension"),
+      CPUID_FEATURE_DEF(3, "pse", "Page Size Extension"),
+      CPUID_FEATURE_DEF(4, "tsc", "Time Stamp Counter"),
+      CPUID_FEATURE_DEF(5, "msr", "Pentium Processor MSR"),
+      CPUID_FEATURE_DEF(6, "pae", "Physical Address Extension"),
+      CPUID_FEATURE_DEF(7, "mce", "Machine Check Exception"),
+      CPUID_FEATURE_DEF(8, "cx8", "CMPXCHG8B Instruction Supported"),
+      CPUID_FEATURE_DEF(9, "apic", "On-chip APIC Hardware Enabled"),
+      CPUID_FEATURE_DEF(11, "sep", "SYSENTER and SYSEXIT"),
+      CPUID_FEATURE_DEF(12, "mtrr", "Memory Type Range Registers"),
+      CPUID_FEATURE_DEF(13, "pge", "PTE Global Bit"),
+      CPUID_FEATURE_DEF(14, "mca", "Machine Check Architecture"),
+      CPUID_FEATURE_DEF(15, "cmov", "Conditional Move/Compare Instruction"),
+      CPUID_FEATURE_DEF(16, "pat", "Page Attribute Table"),
+      CPUID_FEATURE_DEF(17, "pse36", "Page Size Extension 36-bit"),
+      CPUID_FEATURE_DEF(18, "pn", "Processor Serial Number"),
+      CPUID_FEATURE_DEF(19, "clflush", "CFLUSH instruction"),
+      CPUID_FEATURE_DEF(21, "dts", "Debug Store"),
+      CPUID_FEATURE_DEF(22, "acpi", "Thermal Monitor and Clock Ctrl"),
+      CPUID_FEATURE_DEF(23, "mmx", "MMX Technology"),
+      CPUID_FEATURE_DEF(24, "fxsr", "FXSAVE/FXRSTOR"),
+      CPUID_FEATURE_DEF(25, "sse", "SSE Extensions"),
+      CPUID_FEATURE_DEF(26, "sse2", "SSE2 Extensions"),
+      CPUID_FEATURE_DEF(27, "ss", "Self Snoop"),
+      CPUID_FEATURE_DEF(28, "ht", "Multi-threading"),
+      CPUID_FEATURE_DEF(29, "tm", "Therm. Monitor"),
+      CPUID_FEATURE_DEF(30, "ia64", "IA-64 Processor"),
+      CPUID_FEATURE_DEF(31, "pbe", "Pend. Brk. EN."),
+      { -1 }
+    };
+    static struct {
+      int bit;
+      char *desc;
+    } cap2[] = {
+      CPUID_FEATURE_DEF(0, "pni", "SSE3 Extensions"),
+      CPUID_FEATURE_DEF(3, "monitor", "MONITOR/MWAIT"),
+      CPUID_FEATURE_DEF(4, "ds_cpl", "CPL Qualified Debug Store"),
+      CPUID_FEATURE_DEF(5, "vmx", "Virtual Machine Extensions"),
+      CPUID_FEATURE_DEF(6, "smx", "Safer Mode Extensions"),
+      CPUID_FEATURE_DEF(7, "est", "Enhanced Intel SpeedStep Technology"),
+      CPUID_FEATURE_DEF(8, "tm2", "Thermal Monitor 2"),
+      CPUID_FEATURE_DEF(9, "ssse3", "Supplemental SSE3"),
+      CPUID_FEATURE_DEF(10, "cid", "L1 Context ID"),
+      CPUID_FEATURE_DEF(13, "cx16", "CMPXCHG16B Available"),
+      CPUID_FEATURE_DEF(14, "xtpr", "xTPR Disable"), 
+      CPUID_FEATURE_DEF(18, "dca", "Direct Cache Access"), 
+      { -1 }
+    };
+    static struct {
+      int bit;
+      char *desc;
+    } cap_amd[] = {
+      CPUID_FEATURE_DEF(11, "syscall", "SYSCALL and SYSRET"),
+      CPUID_FEATURE_DEF(19, "mp", "MP Capable"),
+      CPUID_FEATURE_DEF(20, "nx", "No-Execute Page Protection"),
+      CPUID_FEATURE_DEF(22, "mmxext", "MMX Technology (AMD Extensions)"),
+      CPUID_FEATURE_DEF(25, "fxsr_opt", "Fast FXSAVE/FXRSTOR"),
+      CPUID_FEATURE_DEF(27, "rdtscp", "RDTSCP Instruction"),
+      CPUID_FEATURE_DEF(29, "lm", "Long Mode Capable"),
+      CPUID_FEATURE_DEF(30, "3dnowext", "3DNow! Extensions"),
+      CPUID_FEATURE_DEF(31, "3dnow", "3DNow!"),
+      { -1 }
+    };
+    static struct {
+      int bit;
+      char *desc;
+    } cap_amd2[] = {
+      CPUID_FEATURE_DEF(0, "lahf_lm", "LAHF/SAHF Supported in 64-bit Mode"),
+      CPUID_FEATURE_DEF(1, "cmp_legacy", "Chip Multi-Core"),
+      CPUID_FEATURE_DEF(2, "svm", "Secure Virtual Machine"),
+      CPUID_FEATURE_DEF(4, "cr8legacy", "CR8 Available in Legacy Mode"),
+      { -1 }
+    };
+    unsigned int family, model, stepping;
+
+    regs = cpuid(1);
+    family = (regs.eax >> 8) & 0xf;
+    model = (regs.eax >> 4) & 0xf;
+    stepping = regs.eax & 0xf;
+
+    if (family == 0xf)
+    {
+      family += (regs.eax >> 20) & 0xff;
+      model += ((regs.eax >> 16) & 0xf) << 4;
+    }
+
+    printf("cpu family\t: %d\n"
+           "model\t\t: %d\n"
+           "stepping\t: %d\n" ,
+           family,
+           model,
+           stepping);
+
+    if (strstr(idstr, "Intel") && !model_name) {
+      if (family == 6 && model == 0xb && stepping == 1)
+        model_name = "Intel (R) Celeron (R) processor";
+      else
+        model_name = brandname(regs.ebx & 0xf);
+    }   
+
+    printf("flags\t\t:");
+    for (i = 0; cap[i].bit >= 0; i++) {
+      if (regs.edx & (1 << cap[i].bit)) {
+        printf(" %s", cap[i].desc);
+      }
+    }
+    for (i = 0; cap2[i].bit >= 0; i++) {
+      if (regs.ecx & (1 << cap2[i].bit)) {
+        printf(" %s", cap2[i].desc);
+      }
+    }
+    /* k6_mtrr is supported by some AMD K6-2/K6-III CPUs but
+       it is not indicated by a CPUID feature bit, so we
+       have to check the family, model and stepping instead. */
+    if (strstr(idstr, "AMD") &&
+        family == 5 && 
+        (model >= 9 || model == 8 && stepping >= 8))
+      printf(" %s", "k6_mtrr");
+    /* similar for cyrix_arr. */
+    if (strstr(idstr, "Cyrix") &&
+        (family == 5 && model < 4 || family == 6))
+      printf(" %s", "cyrix_arr");
+    /* as well as centaur_mcr. */
+    if (strstr(idstr, "Centaur") &&
+        family == 5)
+      printf(" %s", "centaur_mcr");
+ 
+    for (i = 0; cap_amd[i].bit >= 0; i++) {
+      if (amd_flags & (1 << cap_amd[i].bit)) {
+        printf(" %s", cap_amd[i].desc);
+      }
+    }
+    for (i = 0; cap_amd2[i].bit >= 0; i++) {
+      if (amd_flags2 & (1 << cap_amd2[i].bit)) {
+        printf(" %s", cap_amd2[i].desc);
+      }
+    }
+    printf("\n");
+
+    if (regs.edx & (1 << 4)) {
+      int64_t tsc_start, tsc_end;
+      struct timeval tv_start, tv_end;
+      int usec_delay;
+
+      tsc_start = rdtsc();
+      gettimeofday(&tv_start, NULL);
+#ifdef  MISSING_USLEEP
+      sleep(1);
+#else
+      usleep(100000);
+#endif
+      tsc_end = rdtsc();
+      gettimeofday(&tv_end, NULL);
+
+      usec_delay = 1000000 * (tv_end.tv_sec - tv_start.tv_sec)
+        + (tv_end.tv_usec - tv_start.tv_usec);
+
+      printf("cpu MHz\t\t: %.3f\n", 
+             (double)(tsc_end-tsc_start) / usec_delay);
+    }
+  }
+
+  printf("model name\t: ");
+  if (model_name)
+    printf("%s\n", model_name);
+  else
+    printf("Unknown %s CPU\n", idstr); 
+}