added read_cpuid and MTRR support checking before trying to set them

[retrobench] / src / rbench.c

diff --git a/src/rbench.c b/src/rbench.c
index 34a26c6..a506fe5 100644 (file)
--- a/src/rbench.c
+++ b/src/rbench.c
@@ -19,8 +19,47 @@ unsigned int fb_rmask, fb_gmask, fb_bmask;
 void *framebuf;
 unsigned int time_msec;
 
+static const char *cpufeat[] = {
+       "fpu", "vme", "dbgext", "pse", "tsc", "msr", "pae", "mce", "cx8", "apic", 0,
+       "sep", "mtrr", "pge", "mca", "cmov", "pat", "pse36", "psn", "clf", 0,
+       "dtes", "acpi", "mmx", "fxsr", "sse", "sse2", "ss", "htt", "tm1", "ia64", "pbe"
+};
+
+static const char *cpufeat2[] = {
+       "sse3", "pclmul", "dtes64", "monitor", "dscpl", "vmx", "smx", "est", "tm2",
+       "ssse3", "cid", 0, "fma", "cx16", "etprd", "pdcm", 0, "pcide", "dca", "sse4.1",
+       "sse4.2", "x2apic", "movbe", "popcnt", 0, "aes", "xsave", "osxsave", "avx"
+};
+
 int init(void)
 {
+       int i;
+       struct cpuid_info cpu;
+
+       if(read_cpuid(&cpu) != -1) {
+               printf("CPUID information:\n");
+               printf("  cpuid blocks: %d\n", (int)cpu.maxidx);
+               printf("  CPU vendor: ");
+               for(i=0; i<12; i++) {
+                       putchar(cpu.vendor[i]);
+               }
+               putchar('\n');
+               printf("  stepping: %u, model: %u, family: %u\n", CPUID_STEPPING(cpu.id),
+                               CPUID_MODEL(cpu.id), CPUID_FAMILY(cpu.id));
+               printf("  features:");
+               for(i=0; i<sizeof cpufeat / sizeof *cpufeat; i++) {
+                       if(cpufeat[i] && (cpu.feat & (1 << i))) {
+                               printf(" %s", cpufeat[i]);
+                       }
+               }
+               for(i=0; i<sizeof cpufeat2 / sizeof *cpufeat2; i++) {
+                       if(cpufeat2[i] && (cpu.feat2 & (1 << i))) {
+                               printf(" %s", cpufeat2[i]);
+                       }
+               }
+               putchar('\n');
+       }
+
        printf("initialized graphics %dx%d %dbpp\n", fb_width, fb_height, fb_bpp);
        printf("  rgb mask: %x %x %x\n", fb_rmask, fb_gmask, fb_bmask);
        printf("  rgb shift: %d %d %d\n", fb_rshift, fb_gshift, fb_bshift);