1 files changed, 63 insertions, 0 deletions
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;
+}