| 1 | //===-- fixunsdfsivfp.S - Implement fixunsdfsivfp -------------------------===// |
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| 2 | // |
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| 3 | // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
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| 4 | // See https://llvm.org/LICENSE.txt for license information. |
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| 5 | // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
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| 6 | // |
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| 7 | //===----------------------------------------------------------------------===// |
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| 8 | |
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| 9 | #include "../assembly.h" |
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| 10 | |
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| 11 | // |
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| 12 | // extern unsigned int __fixunsdfsivfp(double a); |
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| 13 | // |
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| 14 | // Converts double precision float to a 32-bit unsigned int rounding towards |
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| 15 | // zero. All negative values become zero. |
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| 16 | // Uses Darwin calling convention where a double precision parameter is |
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| 17 | // passed in GPR register pair. |
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| 18 | // |
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| 19 | .syntax unified |
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| 20 | .p2align 2 |
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| 21 | DEFINE_COMPILERRT_FUNCTION(__fixunsdfsivfp) |
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| 22 | #if defined(COMPILER_RT_ARMHF_TARGET) |
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| 23 | vcvt.u32.f64 s0, d0 |
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| 24 | vmov r0, s0 |
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| 25 | #else |
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| 26 | VMOV_TO_DOUBLE(d7, r0, r1) // load double register from R0/R1 |
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| 27 | vcvt.u32.f64 s15, d7 // convert double to 32-bit int into s15 |
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| 28 | vmov r0, s15 // move s15 to result register |
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| 29 | #endif |
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| 30 | bx lr |
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| 31 | END_COMPILERRT_FUNCTION(__fixunsdfsivfp) |
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| 32 | |
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| 33 | NO_EXEC_STACK_DIRECTIVE |
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| 34 | |
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| 35 | |
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