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/ ---------------------------------------------------------------------------
/ Cpu function detect by Pontscho/fresh!mindworkz
/ (c) 2000 - 2000
/ ---------------------------------------------------------------------------
.text
.globl CpuDetect
.globl ipentium
.globl a3dnow
/ ---------------------------------------------------------------------------
/ in C: unsigned long CpuDetect( void );
/ return: cpu ident number.
/ ---------------------------------------------------------------------------
CpuDetect:
pushl %ebx
pushl %ecx
pushl %edx
movl $1,%eax
cpuid
popl %edx
popl %ecx
popl %ebx
ret
/ ---------------------------------------------------------------------------
/ in C: unsigled long ipentium( void );
/ return: 0 if the processor is not P5 or above else above 1.
/ ---------------------------------------------------------------------------
ipentium:
pushl %ebx
pushl %ecx
pushl %edx
pushfl
popl %eax
movl %eax,%ebx
xorl $0x00200000,%eax
pushl %eax
popfl
pushfl
popl %eax
cmpl %eax,%ebx
jz no_cpuid
movl $1,%eax
cpuid
shrl $8,%eax
cmpl $5,%eax
jb no_cpuid
movl $1,%eax
jmp exit
no_cpuid:
xorl %eax,%eax
exit:
popl %edx
popl %ecx
popl %ebx
ret
/ ---------------------------------------------------------------------------
/ in C: unsigned long a3dnow( void );
/ return: 0 if this processor not requiment 3dnow! else above 1.
/ ---------------------------------------------------------------------------
a3dnow:
pushl %ebx
pushl %edx
pushl %ecx
call ipentium
shrl $1,%eax
jnc no_3dnow
movl $0x80000000,%eax
cpuid
cmpl $0x80000000,%eax
jbe no_3dnow
movl $0x80000001,%eax
cpuid
testl $0x80000000,%edx
jz no_3dnow
movl $1,%eax
jmp exit2
no_3dnow:
xorl %eax,%eax
exit2:
popl %ecx
popl %edx
popl %ebx
ret
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