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54 lines
612 B
54 lines
612 B
.file "have_mmx.S"
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.version "01.01"
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gcc2_compiled.:
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.text
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.align 16
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#if !defined(__MINGW32__) && !defined(__CYGWIN__)
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.globl pixops_have_mmx
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.type pixops_have_mmx,@function
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pixops_have_mmx:
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#else
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.globl _pixops_have_mmx
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_pixops_have_mmx:
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#endif
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push %ebx
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# Check if bit 21 in flags word is writeable
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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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je .notfound
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# OK, we have CPUID
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movl $1, %eax
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cpuid
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test $0x00800000, %edx
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jz .notfound
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movl $1, %eax
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jmp .out
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.notfound:
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movl $0, %eax
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.out:
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popl %ebx
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ret
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