blob: c3246f90eb2df8886e338645201176016af5b348 (
plain) (
blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
|
//===-- eqdf2vfp.S - Implement eqdf2vfp -----------------------------------===//
//
// The LLVM Compiler Infrastructure
//
// This file is dual licensed under the MIT and the University of Illinois Open
// Source Licenses. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
#include "../assembly.h"
//
// extern int __eqdf2vfp(double a, double b);
//
// Returns one iff a == b and neither is NaN.
// Uses Darwin calling convention where double precision arguments are passsed
// like in GPR pairs.
//
.syntax unified
.p2align 2
DEFINE_COMPILERRT_FUNCTION(__eqdf2vfp)
vmov d6, r0, r1 // load r0/r1 pair in double register
vmov d7, r2, r3 // load r2/r3 pair in double register
vcmp.f64 d6, d7
vmrs apsr_nzcv, fpscr
moveq r0, #1 // set result register to 1 if equal
movne r0, #0
bx lr
END_COMPILERRT_FUNCTION(__eqdf2vfp)
|
