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usr / src / contrib / llvm-project / compiler-rt / lib / builtins / arm /

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📄 adddf3vfp.S(1008 B)
📄 addsf3.S(6.89 KB)
📄 addsf3vfp.S(989 B)
📄 aeabi_cdcmp.S(3.25 KB)
📄 aeabi_cdcmpeq_check_nan.c(570 B)
📄 aeabi_cfcmp.S(3.16 KB)
📄 aeabi_cfcmpeq_check_nan.c(568 B)
📄 aeabi_dcmp.S(1.83 KB)
📄 aeabi_div0.c(1.43 KB)
📄 aeabi_drsub.c(541 B)
📄 aeabi_fcmp.S(1.83 KB)
📄 aeabi_frsub.c(541 B)
📄 aeabi_idivmod.S(1.42 KB)
📄 aeabi_ldivmod.S(1.23 KB)
📄 aeabi_memcmp.S(883 B)
📄 aeabi_memcpy.S(883 B)
📄 aeabi_memmove.S(867 B)
📄 aeabi_memset.S(1.39 KB)
📄 aeabi_uidivmod.S(1.57 KB)
📄 aeabi_uldivmod.S(1.21 KB)
📄 bswapdi2.S(1.07 KB)
📄 bswapsi2.S(856 B)
📄 chkstk.S(1.02 KB)
📄 clzdi2.S(1.96 KB)
📄 clzsi2.S(1.67 KB)
📄 comparesf2.S(7.21 KB)
📄 divdf3vfp.S(1006 B)
📄 divmodsi4.S(2.07 KB)
📄 divsf3vfp.S(1002 B)
📄 divsi3.S(2.21 KB)
📄 eqdf2vfp.S(1023 B)
📄 eqsf2vfp.S(1.01 KB)
📄 extendsfdf2vfp.S(1.01 KB)
📄 fixdfsivfp.S(1009 B)
📄 fixsfsivfp.S(996 B)
📄 fixunsdfsivfp.S(1.05 KB)
📄 fixunssfsivfp.S(1.05 KB)
📄 floatsidfvfp.S(1016 B)
📄 floatsisfvfp.S(1014 B)
📄 floatunssidfvfp.S(1.01 KB)
📄 floatunssisfvfp.S(1.01 KB)
📄 fp_mode.c(1.56 KB)
📄 gedf2vfp.S(1.03 KB)
📄 gesf2vfp.S(1.02 KB)
📄 gtdf2vfp.S(1.01 KB)
📄 gtsf2vfp.S(1019 B)
📄 ledf2vfp.S(1.01 KB)
📄 lesf2vfp.S(1.01 KB)
📄 ltdf2vfp.S(1.01 KB)
📄 ltsf2vfp.S(1 KB)
📄 modsi3.S(1.7 KB)
📄 muldf3vfp.S(1.01 KB)
📄 mulsf3vfp.S(1005 B)
📄 nedf2vfp.S(1.02 KB)
📄 negdf2vfp.S(883 B)
📄 negsf2vfp.S(868 B)
📄 nesf2vfp.S(1.01 KB)
📄 restore_vfp_d8_d15_regs.S(1.23 KB)
📄 save_vfp_d8_d15_regs.S(1.23 KB)
📄 softfloat-alias.list(580 B)
📄 subdf3vfp.S(1.02 KB)
📄 subsf3vfp.S(1 KB)
📄 switch16.S(1.9 KB)
📄 switch32.S(1.9 KB)
📄 switch8.S(1.75 KB)
📄 switchu8.S(1.74 KB)
📄 sync-ops.h(3.7 KB)
📄 sync_fetch_and_add_4.S(696 B)
📄 sync_fetch_and_add_8.S(769 B)
📄 sync_fetch_and_and_4.S(655 B)
📄 sync_fetch_and_and_8.S(768 B)
📄 sync_fetch_and_max_4.S(665 B)
📄 sync_fetch_and_max_8.S(769 B)
📄 sync_fetch_and_min_4.S(664 B)
📄 sync_fetch_and_min_8.S(769 B)
📄 sync_fetch_and_nand_4.S(658 B)
📄 sync_fetch_and_nand_8.S(772 B)
📄 sync_fetch_and_or_4.S(652 B)
📄 sync_fetch_and_or_8.S(765 B)
📄 sync_fetch_and_sub_4.S(696 B)
📄 sync_fetch_and_sub_8.S(769 B)
📄 sync_fetch_and_umax_4.S(669 B)
📄 sync_fetch_and_umax_8.S(773 B)
📄 sync_fetch_and_umin_4.S(668 B)
📄 sync_fetch_and_umin_8.S(773 B)
📄 sync_fetch_and_xor_4.S(655 B)
📄 sync_fetch_and_xor_8.S(768 B)
📄 sync_synchronize.S(973 B)
📄 truncdfsf2vfp.S(1.02 KB)
📄 udivmodsi4.S(3.75 KB)
📄 udivsi3.S(5.8 KB)
📄 umodsi3.S(3.24 KB)
📄 unorddf2vfp.S(1.02 KB)
📄 unordsf2vfp.S(1.02 KB)

Editing: fp_mode.c

//===----- lib/arm/fp_mode.c - Floaing-point mode utilities -------*- C -*-===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//

#include <stdint.h>

#include "../fp_mode.h"

#define ARM_TONEAREST  0x0
#define ARM_UPWARD     0x1
#define ARM_DOWNWARD   0x2
#define ARM_TOWARDZERO 0x3
#define ARM_RMODE_MASK (ARM_TONEAREST | ARM_UPWARD | \
                        ARM_DOWNWARD | ARM_TOWARDZERO)
#define ARM_RMODE_SHIFT 22

#define ARM_INEXACT     0x1000

#ifndef __ARM_FP
// For soft float targets, allow changing rounding mode by overriding the weak
// __arm_fe_default_rmode symbol.
FE_ROUND_MODE __attribute__((weak)) __arm_fe_default_rmode = FE_TONEAREST;
#endif

FE_ROUND_MODE __fe_getround() {
#ifdef __ARM_FP
  uint32_t fpscr;
  __asm__ __volatile__("vmrs  %0, fpscr" : "=r" (fpscr));
  fpscr = fpscr >> ARM_RMODE_SHIFT & ARM_RMODE_MASK;
  switch (fpscr) {
    case ARM_UPWARD:
      return FE_UPWARD;
    case ARM_DOWNWARD:
      return FE_DOWNWARD;
    case ARM_TOWARDZERO:
      return FE_TOWARDZERO;
    case ARM_TONEAREST:
    default:
      return FE_TONEAREST;
  }
#else
  return __arm_fe_default_rmode;
#endif
}

int __fe_raise_inexact() {
#ifdef __ARM_FP
  uint32_t fpscr;
  __asm__ __volatile__("vmrs  %0, fpscr" : "=r" (fpscr));
  __asm__ __volatile__("vmsr  fpscr, %0" : : "ri" (fpscr | ARM_INEXACT));
  return 0;
#else
  return 0;
#endif
}

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Editing: fp_mode.c

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