mirror of
https://github.com/mpv-player/mpv
synced 2024-12-25 00:02:13 +00:00
95 lines
2.2 KiB
ArmAsm
95 lines
2.2 KiB
ArmAsm
|
|
/ ---------------------------------------------------------------------------
|
|
/ 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
|