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1a4d82fc JJ |
1 | //===-- negdf2vfp.S - Implement negdf2vfp ---------------------------------===// |
2 | // | |
3 | // The LLVM Compiler Infrastructure | |
4 | // | |
5 | // This file is dual licensed under the MIT and the University of Illinois Open | |
6 | // Source Licenses. See LICENSE.TXT for details. | |
7 | // | |
8 | //===----------------------------------------------------------------------===// | |
9 | ||
10 | #include "../assembly.h" | |
11 | ||
12 | // | |
13 | // extern double __negdf2vfp(double a, double b); | |
14 | // | |
15 | // Returns the negation a double precision floating point numbers using the | |
16 | // Darwin calling convention where double arguments are passsed in GPR pairs. | |
17 | // | |
18 | .syntax unified | |
92a42be0 | 19 | .p2align 2 |
1a4d82fc | 20 | DEFINE_COMPILERRT_FUNCTION(__negdf2vfp) |
7cac9316 XL |
21 | #if defined(COMPILER_RT_ARMHF_TARGET) |
22 | vneg.f64 d0, d0 | |
23 | #else | |
1a4d82fc | 24 | eor r1, r1, #-2147483648 // flip sign bit on double in r0/r1 pair |
7cac9316 | 25 | #endif |
1a4d82fc JJ |
26 | bx lr |
27 | END_COMPILERRT_FUNCTION(__negdf2vfp) | |
3157f602 XL |
28 | |
29 | NO_EXEC_STACK_DIRECTIVE | |
30 |