30 lines
880 B
ArmAsm
30 lines
880 B
ArmAsm
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//===-- nesf2vfp.S - Implement nesf2vfp -----------------------------------===//
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//
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// The LLVM Compiler Infrastructure
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//
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// 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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//
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//===----------------------------------------------------------------------===//
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#include "../assembly.h"
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//
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// extern int __nesf2vfp(float a, float b);
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//
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// Returns one iff a != b and neither is NaN.
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// Uses Darwin calling convention where single precision arguments are passsed
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// like 32-bit ints
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//
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.syntax unified
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.align 2
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DEFINE_COMPILERRT_FUNCTION(__nesf2vfp)
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vmov s14, r0 // move from GPR 0 to float register
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vmov s15, r1 // move from GPR 1 to float register
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vcmp.f32 s14, s15
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vmrs apsr_nzcv, fpscr
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movne r0, #1 // set result register to 1 if unequal
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moveq r0, #0
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bx lr
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