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Diffstat (limited to 'sysdeps/aarch64/fpu/math_private.h')
| -rw-r--r-- | sysdeps/aarch64/fpu/math_private.h | 324 |
1 files changed, 0 insertions, 324 deletions
diff --git a/sysdeps/aarch64/fpu/math_private.h b/sysdeps/aarch64/fpu/math_private.h deleted file mode 100644 index 807111ea5a..0000000000 --- a/sysdeps/aarch64/fpu/math_private.h +++ /dev/null @@ -1,324 +0,0 @@ -/* Private floating point rounding and exceptions handling. AArch64 version. - Copyright (C) 2014-2017 Free Software Foundation, Inc. - This file is part of the GNU C Library. - - The GNU C Library is free software; you can redistribute it and/or - modify it under the terms of the GNU Lesser General Public - License as published by the Free Software Foundation; either - version 2.1 of the License, or (at your option) any later version. - - The GNU C Library is distributed in the hope that it will be useful, - but WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - Lesser General Public License for more details. - - You should have received a copy of the GNU Lesser General Public - License along with the GNU C Library; if not, see - <http://www.gnu.org/licenses/>. */ - -#ifndef AARCH64_MATH_PRIVATE_H -#define AARCH64_MATH_PRIVATE_H 1 - -#include <fenv.h> -#include <fpu_control.h> - -#define math_opt_barrier(x) \ -({ __typeof (x) __x = (x); __asm ("" : "+w" (__x)); __x; }) -#define math_force_eval(x) \ -({ __typeof (x) __x = (x); __asm __volatile__ ("" : : "w" (__x)); }) - -extern __always_inline double -__ieee754_sqrt (double d) -{ - double res; - asm __volatile__ ("fsqrt %d0, %d1" : "=w" (res) : "w" (d)); - return res; -} - -extern __always_inline float -__ieee754_sqrtf (float s) -{ - float res; - asm __volatile__ ("fsqrt %s0, %s1" : "=w" (res) : "w" (s)); - return res; -} - -static __always_inline void -libc_feholdexcept_aarch64 (fenv_t *envp) -{ - fpu_control_t fpcr; - fpu_control_t new_fpcr; - fpu_fpsr_t fpsr; - fpu_fpsr_t new_fpsr; - - _FPU_GETCW (fpcr); - _FPU_GETFPSR (fpsr); - envp->__fpcr = fpcr; - envp->__fpsr = fpsr; - - /* Clear exception flags and set all exceptions to non-stop. */ - new_fpcr = fpcr & ~(FE_ALL_EXCEPT << FE_EXCEPT_SHIFT); - new_fpsr = fpsr & ~FE_ALL_EXCEPT; - - if (__glibc_unlikely (new_fpcr != fpcr)) - _FPU_SETCW (new_fpcr); - - if (new_fpsr != fpsr) - _FPU_SETFPSR (new_fpsr); -} - -#define libc_feholdexcept libc_feholdexcept_aarch64 -#define libc_feholdexceptf libc_feholdexcept_aarch64 -#define libc_feholdexceptl libc_feholdexcept_aarch64 - -static __always_inline void -libc_fesetround_aarch64 (int round) -{ - fpu_control_t fpcr; - - _FPU_GETCW (fpcr); - - /* Check whether rounding modes are different. */ - round = (fpcr ^ round) & _FPU_FPCR_RM_MASK; - - /* Set new rounding mode if different. */ - if (__glibc_unlikely (round != 0)) - _FPU_SETCW (fpcr ^ round); -} - -#define libc_fesetround libc_fesetround_aarch64 -#define libc_fesetroundf libc_fesetround_aarch64 -#define libc_fesetroundl libc_fesetround_aarch64 - -static __always_inline void -libc_feholdexcept_setround_aarch64 (fenv_t *envp, int round) -{ - fpu_control_t fpcr; - fpu_control_t new_fpcr; - fpu_fpsr_t fpsr; - fpu_fpsr_t new_fpsr; - - _FPU_GETCW (fpcr); - _FPU_GETFPSR (fpsr); - envp->__fpcr = fpcr; - envp->__fpsr = fpsr; - - /* Clear exception flags, set all exceptions to non-stop, - and set new rounding mode. */ - new_fpcr = fpcr & ~((FE_ALL_EXCEPT << FE_EXCEPT_SHIFT) | _FPU_FPCR_RM_MASK); - new_fpcr |= round; - new_fpsr = fpsr & ~FE_ALL_EXCEPT; - - if (__glibc_unlikely (new_fpcr != fpcr)) - _FPU_SETCW (new_fpcr); - - if (new_fpsr != fpsr) - _FPU_SETFPSR (new_fpsr); -} - -#define libc_feholdexcept_setround libc_feholdexcept_setround_aarch64 -#define libc_feholdexcept_setroundf libc_feholdexcept_setround_aarch64 -#define libc_feholdexcept_setroundl libc_feholdexcept_setround_aarch64 - -static __always_inline int -libc_fetestexcept_aarch64 (int ex) -{ - fpu_fpsr_t fpsr; - - _FPU_GETFPSR (fpsr); - return fpsr & ex & FE_ALL_EXCEPT; -} - -#define libc_fetestexcept libc_fetestexcept_aarch64 -#define libc_fetestexceptf libc_fetestexcept_aarch64 -#define libc_fetestexceptl libc_fetestexcept_aarch64 - -static __always_inline void -libc_fesetenv_aarch64 (const fenv_t *envp) -{ - fpu_control_t fpcr; - fpu_control_t new_fpcr; - - _FPU_GETCW (fpcr); - new_fpcr = envp->__fpcr; - - if (__glibc_unlikely (fpcr != new_fpcr)) - _FPU_SETCW (new_fpcr); - - _FPU_SETFPSR (envp->__fpsr); -} - -#define libc_fesetenv libc_fesetenv_aarch64 -#define libc_fesetenvf libc_fesetenv_aarch64 -#define libc_fesetenvl libc_fesetenv_aarch64 -#define libc_feresetround_noex libc_fesetenv_aarch64 -#define libc_feresetround_noexf libc_fesetenv_aarch64 -#define libc_feresetround_noexl libc_fesetenv_aarch64 - -static __always_inline int -libc_feupdateenv_test_aarch64 (const fenv_t *envp, int ex) -{ - fpu_control_t fpcr; - fpu_control_t new_fpcr; - fpu_fpsr_t fpsr; - fpu_fpsr_t new_fpsr; - int excepts; - - _FPU_GETCW (fpcr); - _FPU_GETFPSR (fpsr); - - /* Merge current exception flags with the saved fenv. */ - excepts = fpsr & FE_ALL_EXCEPT; - new_fpcr = envp->__fpcr; - new_fpsr = envp->__fpsr | excepts; - - if (__glibc_unlikely (fpcr != new_fpcr)) - _FPU_SETCW (new_fpcr); - - if (fpsr != new_fpsr) - _FPU_SETFPSR (new_fpsr); - - /* Raise the exceptions if enabled in the new FP state. */ - if (__glibc_unlikely (excepts & (new_fpcr >> FE_EXCEPT_SHIFT))) - __feraiseexcept (excepts); - - return excepts & ex; -} - -#define libc_feupdateenv_test libc_feupdateenv_test_aarch64 -#define libc_feupdateenv_testf libc_feupdateenv_test_aarch64 -#define libc_feupdateenv_testl libc_feupdateenv_test_aarch64 - -static __always_inline void -libc_feupdateenv_aarch64 (const fenv_t *envp) -{ - libc_feupdateenv_test_aarch64 (envp, 0); -} - -#define libc_feupdateenv libc_feupdateenv_aarch64 -#define libc_feupdateenvf libc_feupdateenv_aarch64 -#define libc_feupdateenvl libc_feupdateenv_aarch64 - -static __always_inline void -libc_feholdsetround_aarch64 (fenv_t *envp, int round) -{ - fpu_control_t fpcr; - fpu_fpsr_t fpsr; - - _FPU_GETCW (fpcr); - _FPU_GETFPSR (fpsr); - envp->__fpcr = fpcr; - envp->__fpsr = fpsr; - - /* Check whether rounding modes are different. */ - round = (fpcr ^ round) & _FPU_FPCR_RM_MASK; - - /* Set new rounding mode if different. */ - if (__glibc_unlikely (round != 0)) - _FPU_SETCW (fpcr ^ round); -} - -#define libc_feholdsetround libc_feholdsetround_aarch64 -#define libc_feholdsetroundf libc_feholdsetround_aarch64 -#define libc_feholdsetroundl libc_feholdsetround_aarch64 - -static __always_inline void -libc_feresetround_aarch64 (fenv_t *envp) -{ - fpu_control_t fpcr; - int round; - - _FPU_GETCW (fpcr); - - /* Check whether rounding modes are different. */ - round = (envp->__fpcr ^ fpcr) & _FPU_FPCR_RM_MASK; - - /* Restore the rounding mode if it was changed. */ - if (__glibc_unlikely (round != 0)) - _FPU_SETCW (fpcr ^ round); -} - -#define libc_feresetround libc_feresetround_aarch64 -#define libc_feresetroundf libc_feresetround_aarch64 -#define libc_feresetroundl libc_feresetround_aarch64 - -/* We have support for rounding mode context. */ -#define HAVE_RM_CTX 1 - -static __always_inline void -libc_feholdsetround_aarch64_ctx (struct rm_ctx *ctx, int r) -{ - fpu_control_t fpcr; - int round; - - _FPU_GETCW (fpcr); - ctx->env.__fpcr = fpcr; - - /* Check whether rounding modes are different. */ - round = (fpcr ^ r) & _FPU_FPCR_RM_MASK; - ctx->updated_status = round != 0; - - /* Set the rounding mode if changed. */ - if (__glibc_unlikely (round != 0)) - _FPU_SETCW (fpcr ^ round); -} - -#define libc_feholdsetround_ctx libc_feholdsetround_aarch64_ctx -#define libc_feholdsetroundf_ctx libc_feholdsetround_aarch64_ctx -#define libc_feholdsetroundl_ctx libc_feholdsetround_aarch64_ctx - -static __always_inline void -libc_feresetround_aarch64_ctx (struct rm_ctx *ctx) -{ - /* Restore the rounding mode if updated. */ - if (__glibc_unlikely (ctx->updated_status)) - _FPU_SETCW (ctx->env.__fpcr); -} - -#define libc_feresetround_ctx libc_feresetround_aarch64_ctx -#define libc_feresetroundf_ctx libc_feresetround_aarch64_ctx -#define libc_feresetroundl_ctx libc_feresetround_aarch64_ctx - -static __always_inline void -libc_feholdsetround_noex_aarch64_ctx (struct rm_ctx *ctx, int r) -{ - fpu_control_t fpcr; - fpu_fpsr_t fpsr; - int round; - - _FPU_GETCW (fpcr); - _FPU_GETFPSR (fpsr); - ctx->env.__fpcr = fpcr; - ctx->env.__fpsr = fpsr; - - /* Check whether rounding modes are different. */ - round = (fpcr ^ r) & _FPU_FPCR_RM_MASK; - ctx->updated_status = round != 0; - - /* Set the rounding mode if changed. */ - if (__glibc_unlikely (round != 0)) - _FPU_SETCW (fpcr ^ round); -} - -#define libc_feholdsetround_noex_ctx libc_feholdsetround_noex_aarch64_ctx -#define libc_feholdsetround_noexf_ctx libc_feholdsetround_noex_aarch64_ctx -#define libc_feholdsetround_noexl_ctx libc_feholdsetround_noex_aarch64_ctx - -static __always_inline void -libc_feresetround_noex_aarch64_ctx (struct rm_ctx *ctx) -{ - /* Restore the rounding mode if updated. */ - if (__glibc_unlikely (ctx->updated_status)) - _FPU_SETCW (ctx->env.__fpcr); - - /* Write new FPSR to restore exception flags. */ - _FPU_SETFPSR (ctx->env.__fpsr); -} - -#define libc_feresetround_noex_ctx libc_feresetround_noex_aarch64_ctx -#define libc_feresetround_noexf_ctx libc_feresetround_noex_aarch64_ctx -#define libc_feresetround_noexl_ctx libc_feresetround_noex_aarch64_ctx - -#include_next <math_private.h> - -#endif |