diff options
Diffstat (limited to 'mp3lib')
| -rw-r--r-- | mp3lib/d_cpu.s | 27 |
1 files changed, 16 insertions, 11 deletions
diff --git a/mp3lib/d_cpu.s b/mp3lib/d_cpu.s index 34ca9730c3..1ddbd73a51 100644 --- a/mp3lib/d_cpu.s +++ b/mp3lib/d_cpu.s @@ -1,7 +1,7 @@ / --------------------------------------------------------------------------- -/ Cpu function detect by Pontscho/fresh!mindworkz -/ (c) 2000 - 2000 +/ Cpu function detect by Pontscho/fresh!mindworkz (c) 2000 - 2000 +/ 3dnow-dsp detection by Nick Kurshev (C) 2001 / --------------------------------------------------------------------------- .text @@ -62,7 +62,9 @@ exit: / --------------------------------------------------------------------------- / in C: unsigned long a3dnow( void ); -/ return: 0 if this processor not requiment 3dnow! else above 1. +/ return: 0 if this processor does not support 3dnow! +/ 1 otherwise +/ 2 if this cpu supports 3dnow-dsp extension / --------------------------------------------------------------------------- a3dnow: pushl %ebx @@ -71,21 +73,24 @@ a3dnow: call ipentium - shrl $1,%eax - jnc no_3dnow + testl %eax,%eax + jz exit2 movl $0x80000000,%eax cpuid cmpl $0x80000000,%eax - jbe no_3dnow + jbe exit2 movl $0x80000001,%eax cpuid - testl $0x80000000,%edx - jz no_3dnow - movl $1,%eax - jmp exit2 -no_3dnow: xorl %eax,%eax + testl $0x80000000,%edx + jz exit2 +/// eax=1 - K6 3DNow! + inc %eax + testl $0x40000000,%edx + jz exit2 +/// eax=2 - K7 3DNowEx! + inc %eax exit2: popl %ecx |