xref: /aosp_15_r20/external/compiler-rt/lib/builtins/arm/ltsf2vfp.S (revision 7c3d14c8b49c529e04be81a3ce6f5cc23712e4c6)
1*7c3d14c8STreehugger Robot//===-- ltsf2vfp.S - Implement ltsf2vfp -----------------------------------===//
2*7c3d14c8STreehugger Robot//
3*7c3d14c8STreehugger Robot//                     The LLVM Compiler Infrastructure
4*7c3d14c8STreehugger Robot//
5*7c3d14c8STreehugger Robot// This file is dual licensed under the MIT and the University of Illinois Open
6*7c3d14c8STreehugger Robot// Source Licenses. See LICENSE.TXT for details.
7*7c3d14c8STreehugger Robot//
8*7c3d14c8STreehugger Robot//===----------------------------------------------------------------------===//
9*7c3d14c8STreehugger Robot
10*7c3d14c8STreehugger Robot#include "../assembly.h"
11*7c3d14c8STreehugger Robot
12*7c3d14c8STreehugger Robot//
13*7c3d14c8STreehugger Robot// extern int __ltsf2vfp(float a, float b);
14*7c3d14c8STreehugger Robot//
15*7c3d14c8STreehugger Robot// Returns one iff a < b and neither is NaN.
16*7c3d14c8STreehugger Robot// Uses Darwin calling convention where single precision arguments are passsed
17*7c3d14c8STreehugger Robot// like 32-bit ints
18*7c3d14c8STreehugger Robot//
19*7c3d14c8STreehugger Robot	.syntax unified
20*7c3d14c8STreehugger Robot	.p2align 2
21*7c3d14c8STreehugger RobotDEFINE_COMPILERRT_FUNCTION(__ltsf2vfp)
22*7c3d14c8STreehugger Robot	vmov	s14, r0     // move from GPR 0 to float register
23*7c3d14c8STreehugger Robot	vmov	s15, r1     // move from GPR 1 to float register
24*7c3d14c8STreehugger Robot	vcmp.f32 s14, s15
25*7c3d14c8STreehugger Robot	vmrs	apsr_nzcv, fpscr
26*7c3d14c8STreehugger Robot	movmi	r0, #1      // set result register to 1 if equal
27*7c3d14c8STreehugger Robot	movpl	r0, #0
28*7c3d14c8STreehugger Robot	bx	lr
29*7c3d14c8STreehugger RobotEND_COMPILERRT_FUNCTION(__ltsf2vfp)
30*7c3d14c8STreehugger Robot
31*7c3d14c8STreehugger RobotNO_EXEC_STACK_DIRECTIVE
32*7c3d14c8STreehugger Robot
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