mirror of
https://github.com/mpv-player/mpv
synced 2024-12-14 19:05:33 +00:00
183da5e693
git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@1254 b3059339-0415-0410-9bf9-f77b7e298cf2
154 lines
3.6 KiB
ArmAsm
154 lines
3.6 KiB
ArmAsm
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/ ---------------------------------------------------------------------------
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/ Cpu function detect by Pontscho/fresh!mindworkz (c) 2000 - 2000
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/ 3dnow-dsp detection by Nick Kurshev (C) 2001
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/ ---------------------------------------------------------------------------
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.text
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.globl CpuDetect
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.globl ipentium
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.globl a3dnow
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.globl isse
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/ ---------------------------------------------------------------------------
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/ in C: unsigned long CpuDetect( void );
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/ return: cpu ident number.
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/ ---------------------------------------------------------------------------
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CpuDetect:
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pushl %ebx
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pushl %ecx
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pushl %edx
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pushfl
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popl %eax
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movl %eax,%ebx
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xorl $0x00200000,%eax
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pushl %eax
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popfl
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pushfl
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popl %eax
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cmpl %eax,%ebx
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jz no_cpuid_cpudetect
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movl $1,%eax
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cpuid
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jmp exit_cpudetect
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no_cpuid_cpudetect:
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xorl %eax,%eax
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exit_cpudetect:
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popl %edx
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popl %ecx
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popl %ebx
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ret
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/ ---------------------------------------------------------------------------
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/ in C: unsigled long ipentium( void );
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/ return: 0 if this processor i386 or i486
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/ 1 otherwise
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/ 3 if this cpu supports mmx
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/ ---------------------------------------------------------------------------
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ipentium:
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pushl %ebx
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pushl %ecx
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pushl %edx
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pushfl
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popl %eax
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movl %eax,%ebx
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xorl $0x00200000,%eax
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pushl %eax
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popfl
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pushfl
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popl %eax
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cmpl %eax,%ebx
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jz no_cpuid
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movl $1,%eax
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cpuid
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movl %eax, %ecx
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xorl %eax, %eax
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shrl $8,%ecx
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cmpl $5,%ecx
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jb exit
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incl %eax
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test $0x00800000, %edx
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jz exit
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orl $2, %eax
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jmp exit
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no_cpuid:
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xorl %eax,%eax
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exit:
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popl %edx
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popl %ecx
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popl %ebx
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ret
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/ ---------------------------------------------------------------------------
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/ in C: unsigned long a3dnow( void );
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/ return: 0 if this processor does not support 3dnow!
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/ 1 otherwise
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/ 3 if this cpu supports 3dnow-dsp extension
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/ ---------------------------------------------------------------------------
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a3dnow:
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pushl %ebx
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pushl %edx
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pushl %ecx
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call ipentium
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testl %eax,%eax
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jz exit2
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movl $0x80000000,%eax
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cpuid
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cmpl $0x80000000,%eax
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jbe exit2
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movl $0x80000001,%eax
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cpuid
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xorl %eax,%eax
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testl $0x80000000,%edx
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jz exit2
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/// eax=1 - K6 3DNow!
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inc %eax
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testl $0x40000000,%edx
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jz exit2
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/// eax=2 - K7 3DNowEx!
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orl $2, %eax
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exit2:
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popl %ecx
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popl %edx
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popl %ebx
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ret
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/ ---------------------------------------------------------------------------
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/ in C: unsigned long isse( void );
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/ return: 0 if this processor does not support sse
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/ 1 otherwise
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/ 3 if this cpu supports sse2 extension
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/ ---------------------------------------------------------------------------
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isse:
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pushl %ebx
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pushl %edx
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pushl %ecx
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call ipentium
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testl %eax,%eax
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jz exit3
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movl $1,%eax
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cpuid
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xorl %eax, %eax
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testl $0x02000000,%edx
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jz exit3
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incl %eax
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testl $0x04000000,%edx
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jz exit3
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orl $2, %eax
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exit3:
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popl %ecx
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popl %edx
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popl %ebx
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ret
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