1bdd1243dSDimitry Andric //=== lib/builtins/riscv/fp_mode.c - Floaing-point mode utilities -*- C -*-===// 2bdd1243dSDimitry Andric // 3bdd1243dSDimitry Andric // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 4bdd1243dSDimitry Andric // See https://llvm.org/LICENSE.txt for license information. 5bdd1243dSDimitry Andric // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 6bdd1243dSDimitry Andric // 7bdd1243dSDimitry Andric //===----------------------------------------------------------------------===// 8bdd1243dSDimitry Andric #include "../fp_mode.h" 9bdd1243dSDimitry Andric 10bdd1243dSDimitry Andric #define RISCV_TONEAREST 0x0 11bdd1243dSDimitry Andric #define RISCV_TOWARDZERO 0x1 12bdd1243dSDimitry Andric #define RISCV_DOWNWARD 0x2 13bdd1243dSDimitry Andric #define RISCV_UPWARD 0x3 14bdd1243dSDimitry Andric 15bdd1243dSDimitry Andric #define RISCV_INEXACT 0x1 16bdd1243dSDimitry Andric __fe_getround(void)17bdd1243dSDimitry AndricCRT_FE_ROUND_MODE __fe_getround(void) { 18*06c3fb27SDimitry Andric #if defined(__riscv_f) || defined(__riscv_zfinx) 19bdd1243dSDimitry Andric int frm; 20bdd1243dSDimitry Andric __asm__ __volatile__("frrm %0" : "=r" (frm)); 21bdd1243dSDimitry Andric switch (frm) { 22bdd1243dSDimitry Andric case RISCV_TOWARDZERO: 23bdd1243dSDimitry Andric return CRT_FE_TOWARDZERO; 24bdd1243dSDimitry Andric case RISCV_DOWNWARD: 25bdd1243dSDimitry Andric return CRT_FE_DOWNWARD; 26bdd1243dSDimitry Andric case RISCV_UPWARD: 27bdd1243dSDimitry Andric return CRT_FE_UPWARD; 28bdd1243dSDimitry Andric case RISCV_TONEAREST: 29bdd1243dSDimitry Andric default: 30bdd1243dSDimitry Andric return CRT_FE_TONEAREST; 31bdd1243dSDimitry Andric } 32bdd1243dSDimitry Andric #else 33bdd1243dSDimitry Andric return CRT_FE_TONEAREST; 34bdd1243dSDimitry Andric #endif 35bdd1243dSDimitry Andric } 36bdd1243dSDimitry Andric __fe_raise_inexact(void)37bdd1243dSDimitry Andricint __fe_raise_inexact(void) { 38*06c3fb27SDimitry Andric #if defined(__riscv_f) || defined(__riscv_zfinx) 39bdd1243dSDimitry Andric __asm__ __volatile__("csrsi fflags, %0" :: "i" (RISCV_INEXACT)); 40bdd1243dSDimitry Andric #endif 41bdd1243dSDimitry Andric return 0; 42bdd1243dSDimitry Andric } 43