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-rw-r--r--extra/Configs/Config.in.arch1
-rw-r--r--libc/sysdeps/linux/or1k/bits/fenv.h84
-rw-r--r--libc/sysdeps/linux/or1k/fpu_control.h88
-rw-r--r--libm/or1k/Makefile.arch16
-rw-r--r--libm/or1k/fclrexcpt.c42
-rw-r--r--libm/or1k/fegetenv.c28
-rw-r--r--libm/or1k/fegetmode.c28
-rw-r--r--libm/or1k/fegetround.c25
-rw-r--r--libm/or1k/feholdexcpt.c29
-rw-r--r--libm/or1k/fenv_private.h196
-rw-r--r--libm/or1k/fesetenv.c28
-rw-r--r--libm/or1k/fesetexcept.c34
-rw-r--r--libm/or1k/fesetmode.c38
-rw-r--r--libm/or1k/fesetround.c35
-rw-r--r--libm/or1k/feupdateenv.c29
-rw-r--r--libm/or1k/fgetexcptflg.c28
-rw-r--r--libm/or1k/fraiseexcpt.c63
-rw-r--r--libm/or1k/fsetexcptflg.c42
-rw-r--r--libm/or1k/ftestexcept.c25
-rw-r--r--libm/or1k/get-rounding-mode.h36
20 files changed, 895 insertions, 0 deletions
diff --git a/extra/Configs/Config.in.arch b/extra/Configs/Config.in.arch
index 1ea42e6d1..cacac7e5e 100644
--- a/extra/Configs/Config.in.arch
+++ b/extra/Configs/Config.in.arch
@@ -170,6 +170,7 @@ config UCLIBC_HAS_FENV
TARGET_metag || \
TARGET_mips || \
TARGET_nds32 || \
+ TARGET_or1k || \
(TARGET_powerpc && CONFIG_E500) || \
TARGET_riscv32 || \
TARGET_riscv64 || \
diff --git a/libc/sysdeps/linux/or1k/bits/fenv.h b/libc/sysdeps/linux/or1k/bits/fenv.h
new file mode 100644
index 000000000..4701946ff
--- /dev/null
+++ b/libc/sysdeps/linux/or1k/bits/fenv.h
@@ -0,0 +1,84 @@
+/* Floating point environment, OpenRISC version.
+ Copyright (C) 2022-2025 Free Software Foundation, Inc.
+
+ 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
+ <https://www.gnu.org/licenses/>. */
+
+#ifndef _FENV_H
+# error "Never use <bits/fenv.h> directly; include <fenv.h> instead."
+#endif
+
+#ifdef __or1k_hard_float__
+/* Define bits representing exceptions in the FPCSR status word. */
+enum
+ {
+ FE_OVERFLOW =
+#define FE_OVERFLOW (1 << 3)
+ FE_OVERFLOW,
+ FE_UNDERFLOW =
+#define FE_UNDERFLOW (1 << 4)
+ FE_UNDERFLOW,
+ FE_INEXACT =
+#define FE_INEXACT (1 << 8)
+ FE_INEXACT,
+ FE_INVALID =
+#define FE_INVALID (1 << 9)
+ FE_INVALID,
+ FE_DIVBYZERO =
+#define FE_DIVBYZERO (1 << 11)
+ FE_DIVBYZERO,
+ };
+
+/* All supported exceptions. */
+#define FE_ALL_EXCEPT \
+ (FE_INVALID | FE_DIVBYZERO | FE_OVERFLOW | FE_UNDERFLOW | FE_INEXACT)
+
+/* Define bits representing rounding modes in the FPCSR Rmode field. */
+#define FE_TONEAREST (0x0 << 1)
+#define FE_TOWARDZERO (0x1 << 1)
+#define FE_UPWARD (0x2 << 1)
+#define FE_DOWNWARD (0x3 << 1)
+
+#else
+
+/* In the soft-float case only rounding to nearest is supported, with
+ no exceptions. */
+
+enum
+ {
+ __FE_UNDEFINED = -1,
+
+ FE_TONEAREST =
+# define FE_TONEAREST 0x0
+ FE_TONEAREST
+ };
+
+# define FE_ALL_EXCEPT 0
+
+#endif /* __or1k_hard_float__ */
+
+/* Type representing exception flags. */
+typedef unsigned int fexcept_t;
+
+/* Type representing floating-point environment. */
+typedef unsigned int fenv_t;
+
+/* If the default argument is used we use this value. */
+#define FE_DFL_ENV ((const fenv_t *) -1l)
+
+/* Type representing floating-point control modes. */
+typedef unsigned int femode_t;
+
+/* Default floating-point control modes. */
+# define FE_DFL_MODE ((const femode_t *) -1L)
diff --git a/libc/sysdeps/linux/or1k/fpu_control.h b/libc/sysdeps/linux/or1k/fpu_control.h
new file mode 100644
index 000000000..9abde4f42
--- /dev/null
+++ b/libc/sysdeps/linux/or1k/fpu_control.h
@@ -0,0 +1,88 @@
+/* FPU control word bits. OpenRISC version.
+ Copyright (C) 2024-2025 Free Software Foundation, Inc.
+
+ 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
+ <https://www.gnu.org/licenses/>. */
+
+#ifndef _FPU_CONTROL_H
+#define _FPU_CONTROL_H
+
+#ifndef __or1k_hard_float__
+
+# define _FPU_RESERVED 0xffffffff
+# define _FPU_DEFAULT 0x00000000
+# define _FPU_GETCW(cw) (cw) = 0
+# define _FPU_SETCW(cw) (void) (cw)
+
+#else /* __or1k_hard_float__ */
+
+/* Layout of FPCSR:
+
+ The bits of the FPCSR are defined as follows, this should help
+ explain how the masks below have come to be.
+
+ +-----------+----------------------------+-----+----+
+ | 32 - 12 | 11 10 9 8 7 6 5 4 3 | 2-1 | 0 |
+ +-----------+----------------------------+-----+----+
+ | Reserved | DZ IN IV IX Z QN SN UN OV | RM | EE |
+ +-----------+----------------------------+-----+----+
+
+ Exception flags:
+
+ DZ - divide by zero flag.
+ IN - infinite flag.
+ IV - invalid flag.
+ IX - inexact flag.
+ Z - zero flag.
+ QN - qnan flag.
+ SN - snan flag.
+ UN - underflow flag.
+ OV - overflow flag.
+
+ Rounding modes:
+
+ The FPCSR bits 2-1 labeled above as RM specify the rounding mode.
+
+ 00 - round to nearest
+ 01 - round to zero
+ 10 - round to positive infinity
+ 11 - round to negative infinity
+
+ Enabling exceptions:
+
+ EE - set to enable FPU exceptions.
+
+ */
+
+# define _FPU_RESERVED 0xfffff000
+/* Default: rounding to nearest with exceptions disabled. */
+# define _FPU_DEFAULT 0
+/* IEEE: Same as above with exceptions enabled. */
+# define _FPU_IEEE (_FPU_DEFAULT | 1)
+
+# define _FPU_FPCSR_RM_MASK (0x3 << 1)
+
+/* Macros for accessing the hardware control word. */
+# define _FPU_GETCW(cw) __asm__ volatile ("l.mfspr %0,r0,20" : "=r" (cw))
+# define _FPU_SETCW(cw) __asm__ volatile ("l.mtspr r0,%0,20" : : "r" (cw))
+
+#endif /* __or1k_hard_float__ */
+
+/* Type of the control word. */
+typedef unsigned int fpu_control_t;
+
+/* Default control word set at startup. */
+extern fpu_control_t __fpu_control;
+
+#endif /* fpu_control.h */
diff --git a/libm/or1k/Makefile.arch b/libm/or1k/Makefile.arch
new file mode 100644
index 000000000..bd38690be
--- /dev/null
+++ b/libm/or1k/Makefile.arch
@@ -0,0 +1,16 @@
+# Makefile for uClibc-ng
+# Licensed under the LGPL v2.1 or later, see the file COPYING.LIB in this tarball.
+
+ifeq ($(UCLIBC_HAS_FENV),y)
+libm_ARCH_SRC:=$(wildcard $(libm_ARCH_DIR)/*.c)
+libm_ARCH_OBJ:=$(patsubst $(libm_ARCH_DIR)/%.c,$(libm_ARCH_OUT)/%.o,$(libm_ARCH_SRC))
+endif
+
+libm_ARCH_OBJS:=$(libm_ARCH_OBJ)
+
+ifeq ($(DOPIC),y)
+libm-a-y+=$(libm_ARCH_OBJS:.o=.os)
+else
+libm-a-y+=$(libm_ARCH_OBJS)
+endif
+libm-so-y+=$(libm_ARCH_OBJS:.o=.os)
diff --git a/libm/or1k/fclrexcpt.c b/libm/or1k/fclrexcpt.c
new file mode 100644
index 000000000..ecb327d72
--- /dev/null
+++ b/libm/or1k/fclrexcpt.c
@@ -0,0 +1,42 @@
+/* Clear given exceptions in current floating-point environment.
+ OpenRISC version.
+ Copyright (C) 2024-2025 Free Software Foundation, Inc.
+
+ 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
+ <https://www.gnu.org/licenses/>. */
+
+#include <fenv.h>
+#include <fpu_control.h>
+
+int
+feclearexcept (int excepts)
+{
+ fpu_control_t cw;
+ fpu_control_t cw_new;
+
+ /* Mask out unsupported bits/exceptions. */
+ excepts &= FE_ALL_EXCEPT;
+
+ /* Read the complete control word. */
+ _FPU_GETCW (cw);
+
+ cw_new = cw & ~excepts;
+
+ /* Put the new data in effect. */
+ if (cw != cw_new)
+ _FPU_SETCW (cw_new);
+
+ /* Success. */
+ return 0;
+}
diff --git a/libm/or1k/fegetenv.c b/libm/or1k/fegetenv.c
new file mode 100644
index 000000000..7769d456f
--- /dev/null
+++ b/libm/or1k/fegetenv.c
@@ -0,0 +1,28 @@
+/* Store current floating-point environment.
+ Copyright (C) 2024-2025 Free Software Foundation, Inc.
+
+ 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
+ <https://www.gnu.org/licenses/>. */
+
+#include <fenv.h>
+#include <fpu_control.h>
+
+int
+fegetenv (fenv_t *envp)
+{
+ _FPU_GETCW (*envp);
+
+ /* Success. */
+ return 0;
+}
diff --git a/libm/or1k/fegetmode.c b/libm/or1k/fegetmode.c
new file mode 100644
index 000000000..40a789329
--- /dev/null
+++ b/libm/or1k/fegetmode.c
@@ -0,0 +1,28 @@
+/* Store current floating-point control modes. OpenRISC version.
+ Copyright (C) 2024-2025 Free Software Foundation, Inc.
+
+ 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
+ <https://www.gnu.org/licenses/>. */
+
+#include <fenv.h>
+#include <fpu_control.h>
+
+int
+fegetmode (femode_t *modep)
+{
+ _FPU_GETCW (*modep);
+
+ /* Success. */
+ return 0;
+}
diff --git a/libm/or1k/fegetround.c b/libm/or1k/fegetround.c
new file mode 100644
index 000000000..0965de2f9
--- /dev/null
+++ b/libm/or1k/fegetround.c
@@ -0,0 +1,25 @@
+/* Return current rounding direction. OpenRISC version.
+ Copyright (C) 2024-2025 Free Software Foundation, Inc.
+
+ 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
+ <https://www.gnu.org/licenses/>. */
+
+#include <fenv.h>
+#include "get-rounding-mode.h"
+
+int
+fegetround (void)
+{
+ return get_rounding_mode ();
+}
diff --git a/libm/or1k/feholdexcpt.c b/libm/or1k/feholdexcpt.c
new file mode 100644
index 000000000..cff06f3d0
--- /dev/null
+++ b/libm/or1k/feholdexcpt.c
@@ -0,0 +1,29 @@
+/* Store current floating-point environment and clear exceptions.
+ OpenRISC version.
+ Copyright (C) 2024-2025 Free Software Foundation, Inc.
+
+ 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
+ <https://www.gnu.org/licenses/>. */
+
+#include <fenv.h>
+#include "fenv_private.h"
+
+int
+feholdexcept (fenv_t *envp)
+{
+ libc_feholdexcept_or1k (envp);
+
+ /* Success. */
+ return 0;
+}
diff --git a/libm/or1k/fenv_private.h b/libm/or1k/fenv_private.h
new file mode 100644
index 000000000..ede7d243a
--- /dev/null
+++ b/libm/or1k/fenv_private.h
@@ -0,0 +1,196 @@
+/* Private floating point rounding and exceptions handling. OpenRISC version.
+ Copyright (C) 2024-2025 Free Software Foundation, Inc.
+
+ 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
+ <https://www.gnu.org/licenses/>. */
+
+#ifndef OR1K_FENV_PRIVATE_H
+#define OR1K_FENV_PRIVATE_H 1
+
+#include <fenv.h>
+#include <fpu_control.h>
+
+static __always_inline void
+libc_feholdexcept_or1k (fenv_t *envp)
+{
+ fpu_control_t cw;
+ fpu_control_t cw_new;
+
+ /* Get and store the environment. */
+ _FPU_GETCW (cw);
+ *envp = cw;
+
+ /* Clear the exception status flags. */
+ cw_new = cw & ~FE_ALL_EXCEPT;
+
+ if (cw != cw_new)
+ _FPU_SETCW (cw_new);
+}
+
+#define libc_feholdexcept libc_feholdexcept_or1k
+#define libc_feholdexceptf libc_feholdexcept_or1k
+#define libc_feholdexceptl libc_feholdexcept_or1k
+
+static __always_inline void
+libc_fesetround_or1k (int round)
+{
+ fpu_control_t cw;
+ fpu_control_t cw_new;
+
+ _FPU_GETCW (cw);
+ cw_new = cw & ~_FPU_FPCSR_RM_MASK;
+ cw_new |= round;
+ if (cw != cw_new)
+ _FPU_SETCW (cw_new);
+}
+
+#define libc_fesetround libc_fesetround_or1k
+#define libc_fesetroundf libc_fesetround_or1k
+#define libc_fesetroundl libc_fesetround_or1k
+
+static __always_inline void
+libc_feholdexcept_setround_or1k (fenv_t *envp, int round)
+{
+ fpu_control_t cw;
+ fpu_control_t cw_new;
+
+ /* Get and store the environment. */
+ _FPU_GETCW (cw);
+ *envp = cw;
+
+ /* Clear the status flags and rounding mode. */
+ cw_new = cw & ~(FE_ALL_EXCEPT | _FPU_FPCSR_RM_MASK);
+
+ /* Set rounding mode. */
+ cw_new |= round;
+
+ if (cw != cw_new)
+ _FPU_SETCW (cw_new);
+}
+
+#define libc_feholdexcept_setround libc_feholdexcept_setround_or1k
+#define libc_feholdexcept_setroundf libc_feholdexcept_setround_or1k
+#define libc_feholdexcept_setroundl libc_feholdexcept_setround_or1k
+
+static __always_inline int
+libc_fetestexcept_or1k (int ex)
+{
+ fpu_control_t cw;
+
+ /* Get current control word. */
+ _FPU_GETCW (cw);
+
+ /* Check if any of the queried exception flags are set. */
+ return cw & ex & FE_ALL_EXCEPT;
+}
+
+#define libc_fetestexcept libc_fetestexcept_or1k
+#define libc_fetestexceptf libc_fetestexcept_or1k
+#define libc_fetestexceptl libc_fetestexcept_or1k
+
+static __always_inline void
+libc_fesetenv_or1k (const fenv_t *envp)
+{
+ if (envp == FE_DFL_ENV)
+ _FPU_SETCW (_FPU_DEFAULT);
+ else
+ _FPU_SETCW (*envp);
+}
+
+#define libc_fesetenv libc_fesetenv_or1k
+#define libc_fesetenvf libc_fesetenv_or1k
+#define libc_fesetenvl libc_fesetenv_or1k
+#define libc_feresetround_noex libc_fesetenv_or1k
+#define libc_feresetround_noexf libc_fesetenv_or1k
+#define libc_feresetround_noexl libc_fesetenv_or1k
+
+static __always_inline int
+libc_feupdateenv_test_or1k (const fenv_t *envp, int ex)
+{
+ fpu_control_t cw;
+ fpu_control_t cw_new;
+ int excepts;
+
+ /* Get current control word. */
+ _FPU_GETCW (cw);
+
+ /* Merge current exception flags with the passed fenv. */
+ excepts = cw & FE_ALL_EXCEPT;
+ cw_new = (envp == FE_DFL_ENV ? _FPU_DEFAULT : *envp) | excepts;
+
+ if (unlikely (cw != cw_new))
+ _FPU_SETCW (cw_new);
+
+ /* Raise the exceptions if enabled in the new FP state. */
+ if (unlikely (excepts))
+ feraiseexcept (excepts);
+
+ return excepts & ex;
+}
+
+#define libc_feupdateenv_test libc_feupdateenv_test_or1k
+#define libc_feupdateenv_testf libc_feupdateenv_test_or1k
+#define libc_feupdateenv_testl libc_feupdateenv_test_or1k
+
+static __always_inline void
+libc_feupdateenv_or1k (const fenv_t *envp)
+{
+ libc_feupdateenv_test_or1k (envp, 0);
+}
+
+#define libc_feupdateenv libc_feupdateenv_or1k
+#define libc_feupdateenvf libc_feupdateenv_or1k
+#define libc_feupdateenvl libc_feupdateenv_or1k
+
+static __always_inline void
+libc_feholdsetround_or1k (fenv_t *envp, int round)
+{
+ fpu_control_t cw;
+
+ _FPU_GETCW (cw);
+ *envp = cw;
+
+ /* Check whether rounding modes are different. */
+ round = (cw ^ round) & _FPU_FPCSR_RM_MASK;
+
+ /* Set new rounding mode if different. */
+ if (unlikely (round != 0))
+ _FPU_SETCW (cw ^ round);
+}
+
+#define libc_feholdsetround libc_feholdsetround_or1k
+#define libc_feholdsetroundf libc_feholdsetround_or1k
+#define libc_feholdsetroundl libc_feholdsetround_or1k
+
+static __always_inline void
+libc_feresetround_or1k (fenv_t *envp)
+{
+ fpu_control_t cw;
+ int round;
+
+ _FPU_GETCW (cw);
+
+ /* Check whether rounding modes are different. */
+ round = (*envp ^ cw) & _FPU_FPCSR_RM_MASK;
+
+ /* Restore the rounding mode if it was changed. */
+ if (unlikely (round != 0))
+ _FPU_SETCW (cw ^ round);
+}
+
+#define libc_feresetround libc_feresetround_or1k
+#define libc_feresetroundf libc_feresetround_or1k
+#define libc_feresetroundl libc_feresetround_or1k
+
+#endif
diff --git a/libm/or1k/fesetenv.c b/libm/or1k/fesetenv.c
new file mode 100644
index 000000000..a9c8448f4
--- /dev/null
+++ b/libm/or1k/fesetenv.c
@@ -0,0 +1,28 @@
+/* Install given floating-point environment. OpenRISC version.
+ Copyright (C) 2024-2025 Free Software Foundation, Inc.
+
+ 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
+ <https://www.gnu.org/licenses/>. */
+
+#include <fenv.h>
+#include "fenv_private.h"
+
+int
+fesetenv (const fenv_t *envp)
+{
+ libc_fesetenv_or1k (envp);
+
+ /* Success. */
+ return 0;
+}
diff --git a/libm/or1k/fesetexcept.c b/libm/or1k/fesetexcept.c
new file mode 100644
index 000000000..abc5624c3
--- /dev/null
+++ b/libm/or1k/fesetexcept.c
@@ -0,0 +1,34 @@
+/* Set given exception flags. OpenRISC version.
+ Copyright (C) 2024-2025 Free Software Foundation, Inc.
+
+ 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
+ <https://www.gnu.org/licenses/>. */
+
+#include <fenv.h>
+#include <fpu_control.h>
+
+int
+fesetexcept (int excepts)
+{
+ fpu_control_t cw;
+ fpu_control_t cw_new;
+
+ _FPU_GETCW (cw);
+ cw_new = cw | (excepts & FE_ALL_EXCEPT);
+ if (cw != cw_new)
+ _FPU_SETCW (cw_new);
+
+ /* Success. */
+ return 0;
+}
diff --git a/libm/or1k/fesetmode.c b/libm/or1k/fesetmode.c
new file mode 100644
index 000000000..74490621b
--- /dev/null
+++ b/libm/or1k/fesetmode.c
@@ -0,0 +1,38 @@
+/* Install given floating-point control modes. OpenRISC version.
+ Copyright (C) 2024-2025 Free Software Foundation, Inc.
+
+ 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
+ <https://www.gnu.org/licenses/>. */
+
+#include <fenv.h>
+#include <fpu_control.h>
+
+int
+fesetmode (const femode_t *modep)
+{
+ fpu_control_t cw;
+ fpu_control_t cw_new;
+
+ _FPU_GETCW (cw);
+ cw_new = cw & ~_FPU_FPCSR_RM_MASK;
+ if (modep == FE_DFL_MODE)
+ cw_new |= (_FPU_DEFAULT & _FPU_FPCSR_RM_MASK);
+ else
+ cw_new |= (*modep & _FPU_FPCSR_RM_MASK);
+ if (cw != cw_new)
+ _FPU_SETCW (cw_new);
+
+ /* Success. */
+ return 0;
+}
diff --git a/libm/or1k/fesetround.c b/libm/or1k/fesetround.c
new file mode 100644
index 000000000..37c2db4ab
--- /dev/null
+++ b/libm/or1k/fesetround.c
@@ -0,0 +1,35 @@
+/* Set current rounding direction. OpenRISC version.
+ Copyright (C) 2024-2025 Free Software Foundation, Inc.
+
+ 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
+ <https://www.gnu.org/licenses/>. */
+
+#include <fenv.h>
+#include "fenv_private.h"
+
+int
+fesetround (int round)
+{
+ switch (round)
+ {
+ case FE_TONEAREST:
+ case FE_TOWARDZERO:
+ case FE_DOWNWARD:
+ case FE_UPWARD:
+ libc_fesetround_or1k (round);
+ return 0;
+ default:
+ return round; /* A nonzero value. */
+ }
+}
diff --git a/libm/or1k/feupdateenv.c b/libm/or1k/feupdateenv.c
new file mode 100644
index 000000000..b0f42744f
--- /dev/null
+++ b/libm/or1k/feupdateenv.c
@@ -0,0 +1,29 @@
+/* Install given floating-point environment and raise exceptions.
+ OpenRISC version.
+ Copyright (C) 2024-2025 Free Software Foundation, Inc.
+
+ 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
+ <https://www.gnu.org/licenses/>. */
+
+#include <fenv.h>
+#include "fenv_private.h"
+
+int
+feupdateenv (const fenv_t *envp)
+{
+ libc_feupdateenv_or1k (envp);
+
+ /* Success. */
+ return 0;
+}
diff --git a/libm/or1k/fgetexcptflg.c b/libm/or1k/fgetexcptflg.c
new file mode 100644
index 000000000..2a725a4c7
--- /dev/null
+++ b/libm/or1k/fgetexcptflg.c
@@ -0,0 +1,28 @@
+/* Store current state of exceptions. OpenRISC version.
+ Copyright (C) 2024-2025 Free Software Foundation, Inc.
+
+ 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
+ <https://www.gnu.org/licenses/>. */
+
+#include <fenv.h>
+#include "fenv_private.h"
+
+int
+fegetexceptflag (fexcept_t *flagp, int excepts)
+{
+ *flagp = libc_fetestexcept_or1k (excepts);
+
+ /* Success. */
+ return 0;
+}
diff --git a/libm/or1k/fraiseexcpt.c b/libm/or1k/fraiseexcpt.c
new file mode 100644
index 000000000..31ceb830d
--- /dev/null
+++ b/libm/or1k/fraiseexcpt.c
@@ -0,0 +1,63 @@
+/* Raise given exceptions. OpenRISC version.
+ Copyright (C) 2024-2025 Free Software Foundation, Inc.
+
+ 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
+ <https://www.gnu.org/licenses/>. */
+
+#include <fenv.h>
+#include <fpu_control.h>
+#include <float.h>
+#include <math.h>
+
+int
+feraiseexcept (int excepts)
+{
+ if (excepts == 0)
+ return 0;
+
+ /* Raise exceptions represented by EXPECTS. */
+
+ if (excepts & FE_INEXACT)
+ {
+ float d = 1.0, x = 3.0;
+ __asm__ volatile ("lf.div.s %0, %0, %1" : "+r" (d) : "r" (x));
+ }
+
+ if (excepts & FE_UNDERFLOW)
+ {
+ float d = FLT_MIN;
+ __asm__ volatile ("lf.mul.s %0, %0, %0" : "+r" (d));
+ }
+
+ if (excepts & FE_OVERFLOW)
+ {
+ float d = FLT_MAX;
+ __asm__ volatile ("lf.mul.s %0, %0, %0" : "+r" (d) : "r" (d));
+ }
+
+ if (excepts & FE_DIVBYZERO)
+ {
+ float d = 1.0, x = 0.0;
+ __asm__ volatile ("lf.div.s %0, %0, %1" : "+r" (d) : "r" (x));
+ }
+
+ if (excepts & FE_INVALID)
+ {
+ float d = HUGE_VAL, x = 0.0;
+ __asm__ volatile ("lf.mul.s %0, %1, %0" : "+r" (d) : "r" (x));
+ }
+
+ /* Success. */
+ return 0;
+}
diff --git a/libm/or1k/fsetexcptflg.c b/libm/or1k/fsetexcptflg.c
new file mode 100644
index 000000000..01c6e8635
--- /dev/null
+++ b/libm/or1k/fsetexcptflg.c
@@ -0,0 +1,42 @@
+/* Set floating-point environment exception handling.
+ Copyright (C) 2024-2025 Free Software Foundation, Inc.
+
+ 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
+ <https://www.gnu.org/licenses/>. */
+
+#include <fenv.h>
+#include <fpu_control.h>
+
+int
+fesetexceptflag (const fexcept_t *flagp, int excepts)
+{
+ fpu_control_t cw;
+ fpu_control_t cw_new;
+
+ /* Get the current exceptions. */
+ _FPU_GETCW (cw);
+
+ /* Make sure the flags we want restored are legal. */
+ excepts &= FE_ALL_EXCEPT;
+
+ /* Now set selected bits from flagp. Note that we ignore all non-flag
+ bits from *flagp, so they don't matter. */
+ cw_new = (cw & ~excepts) | (*flagp & excepts);
+
+ if (cw != cw_new)
+ _FPU_SETCW (cw_new);
+
+ /* Success. */
+ return 0;
+}
diff --git a/libm/or1k/ftestexcept.c b/libm/or1k/ftestexcept.c
new file mode 100644
index 000000000..02ddf12c8
--- /dev/null
+++ b/libm/or1k/ftestexcept.c
@@ -0,0 +1,25 @@
+/* Test exception in current environment. OpenRISC version.
+ Copyright (C) 2024-2025 Free Software Foundation, Inc.
+
+ 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
+ <https://www.gnu.org/licenses/>. */
+
+#include <fenv.h>
+#include "fenv_private.h"
+
+int
+fetestexcept (int excepts)
+{
+ return libc_fetestexcept_or1k (excepts);
+}
diff --git a/libm/or1k/get-rounding-mode.h b/libm/or1k/get-rounding-mode.h
new file mode 100644
index 000000000..f65c4ecc0
--- /dev/null
+++ b/libm/or1k/get-rounding-mode.h
@@ -0,0 +1,36 @@
+/* Determine floating-point rounding mode within libc. OpenRISC version.
+
+ Copyright (C) 2024-2025 Free Software Foundation, Inc.
+
+ 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
+ <https://www.gnu.org/licenses/>. */
+
+#ifndef _OR1K_GET_ROUNDING_MODE_H
+#define _OR1K_GET_ROUNDING_MODE_H 1
+
+#include <fenv.h>
+#include <fpu_control.h>
+
+/* Return the floating-point rounding mode. */
+
+static inline int
+get_rounding_mode (void)
+{
+ fpu_control_t cw;
+
+ _FPU_GETCW (cw);
+ return cw & _FPU_FPCSR_RM_MASK;
+}
+
+#endif /* get-rounding-mode.h */
generated by cgit v1.2.3 (git 2.46.0) at 2025-10-31 04:02:10 +0000