2009-09-12 04:02:01 +08:00
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//===-- subdf3vfp.S - Implement subdf3vfp ---------------------------------===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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2009-10-28 01:49:50 +08:00
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#include "../assembly.h"
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2009-09-12 04:02:01 +08:00
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//
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// extern double __subdf3vfp(double a, double b);
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//
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// Returns difference between two double precision floating point numbers using
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// the Darwin calling convention where double arguments are passsed in GPR pairs
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//
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2009-10-28 01:50:21 +08:00
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DEFINE_COMPILERRT_FUNCTION(__subdf3vfp)
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2009-09-12 04:02:01 +08:00
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fmdrr d6, r0, r1 // move first param from r0/r1 pair into d6
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fmdrr d7, r2, r3 // move second param from r2/r3 pair into d7
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fsubd d6, d6, d7
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fmrrd r0, r1, d6 // move result back to r0/r1 pair
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bx lr
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