1 files changed, 75 insertions, 0 deletions
diff --git a/libm/sparc/fpu_control.h b/libm/sparc/fpu_control.h
new file mode 100644
index 000000000..542f9fb1b
--- /dev/null
+++ b/libm/sparc/fpu_control.h
@@ -0,0 +1,75 @@
+/* FPU control word bits.  SPARC version.
+   Copyright (C) 1997-2025 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	1
+
+
+#include <features.h>
+#include <bits/wordsize.h>
+
+/* masking of interrupts */
+#define _FPU_MASK_IM  0x08000000
+#define _FPU_MASK_OM  0x04000000
+#define _FPU_MASK_UM  0x02000000
+#define _FPU_MASK_ZM  0x01000000
+#define _FPU_MASK_PM  0x00800000
+
+/* precision control */
+#define _FPU_EXTENDED 0x00000000     /* RECOMMENDED */
+#define _FPU_DOUBLE   0x20000000
+#define _FPU_80BIT    0x30000000
+#define _FPU_SINGLE   0x10000000     /* DO NOT USE */
+
+/* rounding control / Sparc */
+#define _FPU_RC_DOWN    0xc0000000
+#define _FPU_RC_UP      0x80000000
+#define _FPU_RC_ZERO    0x40000000
+#define _FPU_RC_NEAREST 0x0        /* RECOMMENDED */
+
+#define _FPU_RESERVED   0x303e0000  /* Reserved bits in cw */
+
+
+/* Now two recommended cw */
+
+/* Linux and IEEE default:
+     - extended precision
+     - rounding to nearest
+     - no exceptions  */
+#define _FPU_DEFAULT  0x0
+#define _FPU_IEEE     0x0
+
+/* Type of the control word.  */
+typedef unsigned long int fpu_control_t;
+
+#if __WORDSIZE == 64
+# define _FPU_GETCW(cw) __asm__ __volatile__ ("stx %%fsr,%0" : "=m" (*&cw))
+# define _FPU_SETCW(cw) __asm__ __volatile__ ("ldx %0,%%fsr" : : "m" (*&cw))
+#else
+# ifdef __leon__
+   /* Prevent stfsr from being placed directly after other fp instruction.  */
+#  define _FPU_GETCW(cw) __asm__ __volatile__ ("nop; st %%fsr,%0" : "=m" (*&cw))
+# else
+#  define _FPU_GETCW(cw) __asm__ __volatile__ ("st %%fsr,%0" : "=m" (*&cw))
+# endif
+# define _FPU_SETCW(cw) __asm__ __volatile__ ("ld %0,%%fsr" : : "m" (*&cw))
+#endif
+
+/* Default control word set at startup.  */
+extern fpu_control_t __fpu_control;
+
+#endif	/* fpu_control.h */