File: floatunssidfvfp.S

package info (click to toggle)
llvm-toolchain-3.8 1%3A3.8.1-24
  • links: PTS, VCS
  • area: main
  • in suites: stretch
  • size: 379,280 kB
  • ctags: 388,501
  • sloc: cpp: 2,309,705; ansic: 477,070; objc: 100,918; asm: 97,974; python: 95,911; sh: 18,634; makefile: 7,294; perl: 5,584; ml: 5,460; pascal: 4,661; lisp: 2,548; xml: 686; cs: 350; php: 212; csh: 117
file content (26 lines) | stat: -rw-r--r-- 911 bytes parent folder | download | duplicates (5)
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
//===-- floatunssidfvfp.S - Implement floatunssidfvfp ---------------------===//
//
//                     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 double __floatunssidfvfp(unsigned int a);
//
// Converts a 32-bit int to a double precision float.
// Uses Darwin calling convention where a double precision result is 
// return in GPR register pair.
//
	.syntax unified
	.p2align 2
DEFINE_COMPILERRT_FUNCTION(__floatunssidfvfp)
	vmov	s15, r0        // move int to float register s15
	vcvt.f64.u32 d7, s15   // convert 32-bit int in s15 to double in d7
	vmov	r0, r1, d7     // move d7 to result register pair r0/r1
	bx	lr
END_COMPILERRT_FUNCTION(__floatunssidfvfp)