72c50e51a5
It seems there have only been a small amount to the compiler-rt source code in the mean time. I'd rather have the code in sync as much as possible by the time we release 9.0. Changes: - The libcompiler_rt library is now dual licensed under both the University of Illinois "BSD-Like" license and the MIT license. - Our local modifications for using .hidden instead of .private_extern have been upstreamed, meaning our changes to lib/assembly.h can now be reverted. - A possible endless recursion in __modsi3() has been fixed. - Support for ARM EABI has been added, but it has no effect on FreeBSD (yet). - The functions __udivmodsi4 and __divmodsi4 have been added. Requested by: many, including bf@ and Pedro Giffuni
32 lines
941 B
ArmAsm
32 lines
941 B
ArmAsm
// This file is dual licensed under the MIT and the University of Illinois Open
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// Source Licenses. See LICENSE.TXT for details.
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#include "../assembly.h"
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// float __floatdisf(di_int a);
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// This routine has some extra memory traffic, loading the 64-bit input via two
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// 32-bit loads, then immediately storing it back to the stack via a single 64-bit
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// store. This is to avoid a write-small, read-large stall.
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// However, if callers of this routine can be safely assumed to store the argument
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// via a 64-bt store, this is unnecessary memory traffic, and should be avoided.
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// It can be turned off by defining the TRUST_CALLERS_USE_64_BIT_STORES macro.
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#ifdef __i386__
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.text
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.align 4
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DEFINE_COMPILERRT_FUNCTION(__floatdisf)
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#ifndef TRUST_CALLERS_USE_64_BIT_STORES
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movd 4(%esp), %xmm0
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movd 8(%esp), %xmm1
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punpckldq %xmm1, %xmm0
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movq %xmm0, 4(%esp)
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#endif
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fildll 4(%esp)
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fstps 4(%esp)
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flds 4(%esp)
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ret
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#endif // __i386__
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