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HEAD
Fix a bug in linprocfs and hold lwps to prevent a race condition.
[dragonfly.git]
/
test
/
sysperf
/
memzero.S
blob
e70923dab70a5b70541fd72fafea1e6272ab1cd2
1
2
/*
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* memcpy.S
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*
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* $DragonFly: src/test/sysperf/memzero.S,v 1.1 2004/04/29 16:14:53 dillon Exp $
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*/
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.text
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.globl dozero1
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.globl dozero2
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.globl dozero3
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.globl dozero4
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.globl dozero5
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.globl dozero6
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.globl dozero7
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.globl fpcleanup
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.p2align 4,0x90
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dozero1:
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pushl %esi
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pushl %edi
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pushl %ecx
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pushl %ebx
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movl 4+16(%esp),%edi
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movl 8+16(%esp),%ecx
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shrl $2,%ecx
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subl %eax,%eax
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cld
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rep
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stosl
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popl %ebx
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popl %ecx
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popl %edi
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popl %esi
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ret
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.p2align 4,0x90
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dozero2:
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pushl %esi
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pushl %edi
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pushl %ecx
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pushl %ebx
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movl 4+16(%esp),%edi
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movl 8+16(%esp),%ecx
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addl %ecx,%esi
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addl %ecx,%edi
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shrl $2,%ecx
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subl %eax,%eax
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std
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rep
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stosl
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popl %ebx
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popl %ecx
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popl %edi
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popl %esi
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ret
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.p2align 4,0x90
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dozero3:
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pushl %esi
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pushl %edi
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pushl %ecx
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pushl %ebx
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movl 4+16(%esp),%edi
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movl 8+16(%esp),%ecx
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movl $8,%edx
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subl %eax,%eax
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.p2align 4,0x90
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1:
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subl %edx,%ecx
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movl %eax,(%edi)
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movl %eax,4(%edi)
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addl %edx,%edi
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testl %ecx,%ecx
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jnz 1b
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popl %ebx
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popl %ecx
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popl %edi
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popl %esi
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ret
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.p2align 4,0x90
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dozero4:
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pushl %esi
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pushl %edi
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pushl %ecx
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pushl %ebx
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movl 4+16(%esp),%edi
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movl 8+16(%esp),%ecx
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subl %eax,%eax
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.p2align 4,0x90
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1:
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subl $16,%ecx
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movnti %eax,0(%edi)
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movnti %eax,4(%edi)
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movnti %eax,8(%edi)
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movnti %eax,12(%edi)
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addl $16,%edi
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testl %ecx,%ecx
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jnz 1b
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popl %ebx
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popl %ecx
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popl %edi
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popl %esi
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ret
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.p2align 4,0x90
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dozero5:
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pushl %esi
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pushl %edi
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pushl %ecx
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pushl %ebx
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movl 4+16(%esp),%edi
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movl 8+16(%esp),%ecx
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subl $108,%esp
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fnsave 0(%esp)
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fninit
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fldz
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.p2align 4,0x90
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1:
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subl $64,%ecx
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movq %mm0,(%edi)
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movq %mm1,8(%edi)
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movq %mm2,16(%edi)
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movq %mm3,24(%edi)
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movq %mm4,32(%edi)
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movq %mm5,40(%edi)
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movq %mm6,48(%edi)
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movq %mm7,56(%edi)
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addl $64,%edi
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testl %ecx,%ecx
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jnz 1b
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frstor 0(%esp)
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addl $108,%esp
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popl %ebx
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popl %ecx
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popl %edi
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popl %esi
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ret
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.p2align 4,0x90
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dozero6:
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pushl %esi
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pushl %edi
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pushl %ecx
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pushl %ebx
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movl 4+16(%esp),%edi
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movl 8+16(%esp),%ecx
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movl $16,%eax
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.p2align 4,0x90
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1:
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subl %eax,%ecx
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movq %mm0,(%edi)
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movq %mm1,8(%edi)
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addl %eax,%edi
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testl %ecx,%ecx
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jnz 1b
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popl %ebx
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popl %ecx
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popl %edi
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popl %esi
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ret
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.p2align 4,0x90
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dozero7:
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pushl %esi
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pushl %edi
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pushl %ecx
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pushl %ebx
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movl 4+16(%esp),%edi
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movl 8+16(%esp),%ecx
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movl $32,%eax
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.p2align 4,0x90
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1:
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subl %eax,%ecx
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movntdq %xmm0,(%edi)
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movntdq %xmm1,16(%edi)
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addl %eax,%edi
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testl %ecx,%ecx
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jnz 1b
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sfence
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popl %ebx
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popl %ecx
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popl %edi
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popl %esi
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ret
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.p2align 4,0x90
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fpcleanup:
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fninit
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ret
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