| //===-- gtdf2vfp.S - Implement gtdf2vfp -----------------------------------===// |
| // |
| // 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 __gtdf2vfp(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 |
| .align 2 |
| DEFINE_COMPILERRT_FUNCTION(__gtdf2vfp) |
| 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 |
| movgt r0, #1 // set result register to 1 if equal |
| movle r0, #0 |
| bx lr |
