added aux/cpuid

This commit is contained in:
aiju 2012-08-24 18:49:25 +02:00
parent c42a535fe9
commit 6edb672951
2 changed files with 209 additions and 0 deletions

208
sys/src/cmd/aux/cpuid.c Normal file
View file

@ -0,0 +1,208 @@
#include <u.h>
#include <libc.h>
#include <bio.h>
#define CUT(x, a, b) (((x)&((1<<(b))-1))>>(a))
typedef struct Res {
ulong ax, bx, cx, dx;
} Res;
Biobuf *out;
uchar _cpuid[] = {
0x8B, 0x44, 0x24, 0x08, /* MOV 8(SP), AX */
0x31, 0xDB, /* XOR BX, BX */
0x8B, 0x4C, 0x24, 0x0C, /* MOV 12(SP), CX */
0x31, 0xD2, /* XOR DX, DX */
0x0F, 0xA2, /* CPUID */
0x8B, 0x7C, 0x24, 0x04, /* MOV 4(SP), DI */
0x89, 0x07, /* MOV AX, (DI) */
0x89, 0x5F, 0x04, /* MOV BX, 4(DI) */
0x89, 0x4F, 0x08, /* MOV CX, 8(DI) */
0x89, 0x57, 0x0C, /* MOV DX, 12(DI) */
0xC3 /* RET */
};
Res (*cpuid)(ulong ax, ulong cx) = (Res(*)(ulong, ulong)) _cpuid;
void
func0(ulong)
{
Res r;
char buf[13];
r = cpuid(0, 0);
((ulong *) buf)[0] = r.bx;
((ulong *) buf)[1] = r.dx;
((ulong *) buf)[2] = r.cx;
buf[13] = 0;
Bprint(out, "vendor %s\n", buf);
}
void
printbits(char *id, ulong x, char **s)
{
int i, j;
for(i = 0, j = 0; i < 32; i++)
if((x & (1<<i)) != 0 && s[i] != nil){
if(j++ % 16 == 0){
if(j != 1)
Bprint(out, "\n");
Bprint(out, "%s ", id);
}
Bprint(out, "%s ", s[i]);
}
if(j % 16 != 0)
Bprint(out, "\n");
}
void
func1(ulong)
{
Res r;
static char *bitsdx[32] = {
"fpu", "vme", "de", "pse", "tsc", "msr", "pae", "mce", "cx8", "apic",
nil, "sep", "mtrr", "pge", "mca", "cmov", "pat", "pse36", "pn", "clflush",
nil, "dts", "acpi", "mmx", "fxsr", "sse", "sse2", "ss", "ht", "tm", "ia64", "pbe",
};
static char *bitscx[32] = {
"pni", "pclmulqdq", "dtes64", "monitor", "ds_cpl", "vmx", "smx", "est", "tm2", "ssse3",
"cid", nil, "fma", "cx16", "xtpr", "pdcm", nil, "pcid", "dca", "sse4_1", "sse4_2", "x2apic",
"movbe", "popcnt", "tscdeadline", "aes", "xsave", "osxsave", "avx",
"f16c", "rdrnd", "hypervisor"
};
r = cpuid(1, 0);
Bprint(out, "procmodel %.8ulx / %.8ulx\n", r.ax, r.bx);
printbits("features", r.dx, bitsdx);
printbits("features", r.cx, bitscx);
}
void
extfunc1(ulong ax)
{
Res r;
static char *bitsdx[32] = {
"fpu", "vme", "de", "pse", "tsc", "msr", "pae", "mce", "cx8", "apic", "sep", "mtrr", "pge",
"mca", "cmov", "pat", "fcmov", "pse36", nil, "mp", "nx", nil, "mmx+", "mmx", nil,
"ffxsr", "pg1g", "tscp", nil, "lm", "3dnow!+", "3dnow"
};
static char *bitscx[32] = {
"ahf64", "cmp", "svm", "eas", "cr8d", "lzcnt", "sse4a", "msse", "3dnow!p", "osvw", "ibs",
"xop", "skinit", "wdt", nil, "lwp", "fma4", "tce", nil, "nodeid", nil, "tbm", "topx",
"pcx_core", "pcx_nb",
};
r = cpuid(ax, 0);
Bprint(out, "extmodel %.8ulx / %.8ulx\n", r.ax, r.bx);
printbits("extfeatures", r.dx, bitsdx);
printbits("extfeatures", r.cx, bitscx);
}
void
extfunc2(ulong ax)
{
char buf[49];
int i;
Res r;
char *p;
if(ax != 0x80000004)
return;
buf[48] = 0;
for(i = 0; i < 3; i++){
r = cpuid(0x80000002 + i, 0);
((ulong *) buf)[4 * i + 0] = r.ax;
((ulong *) buf)[4 * i + 1] = r.bx;
((ulong *) buf)[4 * i + 2] = r.cx;
((ulong *) buf)[4 * i + 3] = r.dx;
}
p = buf;
while(*p == ' ')
p++;
Bprint(out, "procname %s\n", p);
}
void
extfunc8(ulong ax)
{
Res r;
r = cpuid(ax, 0);
Bprint(out, "physbits %uld\n", CUT(r.ax, 0, 7));
Bprint(out, "virtbits %uld\n", CUT(r.ax, 8, 15));
if(CUT(r.ax, 16, 23) != 0)
Bprint(out, "guestbits %uld\n", CUT(r.ax, 16, 23));
}
void (*funcs[])(ulong) = {
[0] func0,
[1] func1,
};
void (*extfuncs[])(ulong) = {
[1] extfunc1,
[2] extfunc2,
[3] extfunc2,
[4] extfunc2,
[8] extfunc8,
};
void
stdfunc(ulong ax)
{
Res r;
r = cpuid(ax, 0);
Bprint(out, "%.8ulx %.8ulx %.8ulx %.8ulx %.8ulx\n", ax, r.ax, r.bx, r.cx, r.dx);
}
char Egreg[] = "this information is classified";
void
notehand(void *, char *s)
{
if(strncmp(s, "sys:", 4) == 0)
sysfatal(Egreg);
noted(NDFLT);
}
void
main(int argc, char **argv)
{
Res r;
int i, rflag, aflag;
ulong w;
static Biobuf buf;
rflag = aflag = 0;
ARGBEGIN {
case 'r': rflag++; break;
case 'a': aflag++; break;
} ARGEND;
notify(notehand);
w = *(ulong *)0x1000;
notify(nil);
if(w != 0xeb010000)
sysfatal(Egreg);
Binit(&buf, 1, OWRITE);
out = &buf;
r = cpuid(0, 0);
for(i = 0; i <= r.ax; i++)
if(i >= nelem(funcs) || funcs[i] == nil || rflag){
if(rflag || aflag)
stdfunc(i);
}else
funcs[i](i);
r = cpuid(0x80000000, 0);
r.ax -= 0x80000000;
for(i = 0; i <= r.ax; i++)
if(i >= nelem(extfuncs) || extfuncs[i] == nil || rflag){
if(rflag || aflag)
stdfunc(0x80000000 | i);
}else
extfuncs[i](0x80000000 | i);
Bterm(out);
}

View file

@ -11,6 +11,7 @@ TARG=\
cddb\
cdsh\
clog\
cpuid\
consolefs\
data2s\
depend\