| /* Internal math stuff. MIPS version. |
| Copyright (C) 2013-2018 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 MIPS_MATH_PRIVATE_H |
| #define MIPS_MATH_PRIVATE_H 1 |
| |
| /* Inline functions to speed up the math library implementation. The |
| default versions of these routines are in generic/math_private.h |
| and call fesetround, feholdexcept, etc. These routines use inlined |
| code instead. */ |
| |
| #ifdef __mips_hard_float |
| |
| # include <fenv.h> |
| # include <fenv_libc.h> |
| # include <fpu_control.h> |
| |
| # define _FPU_MASK_ALL (_FPU_MASK_V | _FPU_MASK_Z | _FPU_MASK_O \ |
| |_FPU_MASK_U | _FPU_MASK_I | FE_ALL_EXCEPT) |
| |
| static __always_inline void |
| libc_feholdexcept_mips (fenv_t *envp) |
| { |
| fpu_control_t cw; |
| |
| /* Save the current state. */ |
| _FPU_GETCW (cw); |
| envp->__fp_control_register = cw; |
| |
| /* Clear all exception enable bits and flags. */ |
| cw &= ~(_FPU_MASK_ALL); |
| _FPU_SETCW (cw); |
| } |
| # define libc_feholdexcept libc_feholdexcept_mips |
| # define libc_feholdexceptf libc_feholdexcept_mips |
| # define libc_feholdexceptl libc_feholdexcept_mips |
| |
| static __always_inline void |
| libc_fesetround_mips (int round) |
| { |
| fpu_control_t cw; |
| |
| /* Get current state. */ |
| _FPU_GETCW (cw); |
| |
| /* Set rounding bits. */ |
| cw &= ~_FPU_RC_MASK; |
| cw |= round; |
| |
| /* Set new state. */ |
| _FPU_SETCW (cw); |
| } |
| # define libc_fesetround libc_fesetround_mips |
| # define libc_fesetroundf libc_fesetround_mips |
| # define libc_fesetroundl libc_fesetround_mips |
| |
| static __always_inline void |
| libc_feholdexcept_setround_mips (fenv_t *envp, int round) |
| { |
| fpu_control_t cw; |
| |
| /* Save the current state. */ |
| _FPU_GETCW (cw); |
| envp->__fp_control_register = cw; |
| |
| /* Clear all exception enable bits and flags. */ |
| cw &= ~(_FPU_MASK_ALL); |
| |
| /* Set rounding bits. */ |
| cw &= ~_FPU_RC_MASK; |
| cw |= round; |
| |
| /* Set new state. */ |
| _FPU_SETCW (cw); |
| } |
| # define libc_feholdexcept_setround libc_feholdexcept_setround_mips |
| # define libc_feholdexcept_setroundf libc_feholdexcept_setround_mips |
| # define libc_feholdexcept_setroundl libc_feholdexcept_setround_mips |
| |
| # define libc_feholdsetround libc_feholdexcept_setround_mips |
| # define libc_feholdsetroundf libc_feholdexcept_setround_mips |
| # define libc_feholdsetroundl libc_feholdexcept_setround_mips |
| |
| static __always_inline void |
| libc_fesetenv_mips (fenv_t *envp) |
| { |
| fpu_control_t cw __attribute__ ((unused)); |
| |
| /* Read current state to flush fpu pipeline. */ |
| _FPU_GETCW (cw); |
| |
| _FPU_SETCW (envp->__fp_control_register); |
| } |
| # define libc_fesetenv libc_fesetenv_mips |
| # define libc_fesetenvf libc_fesetenv_mips |
| # define libc_fesetenvl libc_fesetenv_mips |
| |
| static __always_inline int |
| libc_feupdateenv_test_mips (fenv_t *envp, int excepts) |
| { |
| /* int ret = fetestexcept (excepts); feupdateenv (envp); return ret; */ |
| int cw, temp; |
| |
| /* Get current control word. */ |
| _FPU_GETCW (cw); |
| |
| /* Set flag bits (which are accumulative), and *also* set the |
| cause bits. The setting of the cause bits is what actually causes |
| the hardware to generate the exception, if the corresponding enable |
| bit is set as well. */ |
| temp = cw & FE_ALL_EXCEPT; |
| temp |= envp->__fp_control_register | (temp << CAUSE_SHIFT); |
| |
| /* Set new state. */ |
| _FPU_SETCW (temp); |
| |
| return cw & excepts & FE_ALL_EXCEPT; |
| } |
| # define libc_feupdateenv_test libc_feupdateenv_test_mips |
| # define libc_feupdateenv_testf libc_feupdateenv_test_mips |
| # define libc_feupdateenv_testl libc_feupdateenv_test_mips |
| |
| static __always_inline void |
| libc_feupdateenv_mips (fenv_t *envp) |
| { |
| libc_feupdateenv_test_mips (envp, 0); |
| } |
| # define libc_feupdateenv libc_feupdateenv_mips |
| # define libc_feupdateenvf libc_feupdateenv_mips |
| # define libc_feupdateenvl libc_feupdateenv_mips |
| |
| # define libc_feresetround libc_feupdateenv_mips |
| # define libc_feresetroundf libc_feupdateenv_mips |
| # define libc_feresetroundl libc_feupdateenv_mips |
| |
| static __always_inline int |
| libc_fetestexcept_mips (int excepts) |
| { |
| int cw; |
| |
| /* Get current control word. */ |
| _FPU_GETCW (cw); |
| |
| return cw & excepts & FE_ALL_EXCEPT; |
| } |
| # define libc_fetestexcept libc_fetestexcept_mips |
| # define libc_fetestexceptf libc_fetestexcept_mips |
| # define libc_fetestexceptl libc_fetestexcept_mips |
| |
| /* Enable support for rounding mode context. */ |
| # define HAVE_RM_CTX 1 |
| |
| static __always_inline void |
| libc_feholdexcept_setround_mips_ctx (struct rm_ctx *ctx, int round) |
| { |
| fpu_control_t old, new; |
| |
| /* Save the current state. */ |
| _FPU_GETCW (old); |
| ctx->env.__fp_control_register = old; |
| |
| /* Clear all exception enable bits and flags. */ |
| new = old & ~(_FPU_MASK_ALL); |
| |
| /* Set rounding bits. */ |
| new = (new & ~_FPU_RC_MASK) | round; |
| |
| if (__glibc_unlikely (new != old)) |
| { |
| _FPU_SETCW (new); |
| ctx->updated_status = true; |
| } |
| else |
| ctx->updated_status = false; |
| } |
| # define libc_feholdexcept_setround_ctx libc_feholdexcept_setround_mips_ctx |
| # define libc_feholdexcept_setroundf_ctx libc_feholdexcept_setround_mips_ctx |
| # define libc_feholdexcept_setroundl_ctx libc_feholdexcept_setround_mips_ctx |
| |
| static __always_inline void |
| libc_fesetenv_mips_ctx (struct rm_ctx *ctx) |
| { |
| libc_fesetenv_mips (&ctx->env); |
| } |
| # define libc_fesetenv_ctx libc_fesetenv_mips_ctx |
| # define libc_fesetenvf_ctx libc_fesetenv_mips_ctx |
| # define libc_fesetenvl_ctx libc_fesetenv_mips_ctx |
| |
| static __always_inline void |
| libc_feupdateenv_mips_ctx (struct rm_ctx *ctx) |
| { |
| if (__glibc_unlikely (ctx->updated_status)) |
| libc_feupdateenv_test_mips (&ctx->env, 0); |
| } |
| # define libc_feupdateenv_ctx libc_feupdateenv_mips_ctx |
| # define libc_feupdateenvf_ctx libc_feupdateenv_mips_ctx |
| # define libc_feupdateenvl_ctx libc_feupdateenv_mips_ctx |
| # define libc_feresetround_ctx libc_feupdateenv_mips_ctx |
| # define libc_feresetroundf_ctx libc_feupdateenv_mips_ctx |
| # define libc_feresetroundl_ctx libc_feupdateenv_mips_ctx |
| |
| static __always_inline void |
| libc_feholdsetround_mips_ctx (struct rm_ctx *ctx, int round) |
| { |
| fpu_control_t old, new; |
| |
| /* Save the current state. */ |
| _FPU_GETCW (old); |
| ctx->env.__fp_control_register = old; |
| |
| /* Set rounding bits. */ |
| new = (old & ~_FPU_RC_MASK) | round; |
| |
| if (__glibc_unlikely (new != old)) |
| { |
| _FPU_SETCW (new); |
| ctx->updated_status = true; |
| } |
| else |
| ctx->updated_status = false; |
| } |
| # define libc_feholdsetround_ctx libc_feholdsetround_mips_ctx |
| # define libc_feholdsetroundf_ctx libc_feholdsetround_mips_ctx |
| # define libc_feholdsetroundl_ctx libc_feholdsetround_mips_ctx |
| |
| #endif |
| |
| /* Enable __finitel, __isinfl, and __isnanl for binary compatibility |
| when built without long double support. */ |
| #define LDBL_CLASSIFY_COMPAT 1 |
| |
| #include_next <math_private.h> |
| |
| #endif |