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Diffstat (limited to 'sysdeps/powerpc/fpu_control.h')
| -rw-r--r-- | sysdeps/powerpc/fpu_control.h | 120 |
1 files changed, 0 insertions, 120 deletions
diff --git a/sysdeps/powerpc/fpu_control.h b/sysdeps/powerpc/fpu_control.h deleted file mode 100644 index 842cbfa03f..0000000000 --- a/sysdeps/powerpc/fpu_control.h +++ /dev/null @@ -1,120 +0,0 @@ -/* FPU control word definitions. PowerPC version. - Copyright (C) 1996-2017 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 _FPU_CONTROL_H -#define _FPU_CONTROL_H - -#ifdef _SOFT_FLOAT - -# define _FPU_RESERVED 0xffffffff -# define _FPU_DEFAULT 0x00000000 /* Default value. */ -typedef unsigned int fpu_control_t; -# define _FPU_GETCW(cw) (cw) = 0 -# define _FPU_SETCW(cw) (void) (cw) -extern fpu_control_t __fpu_control; - -#elif defined __NO_FPRS__ /* e500 */ - -/* rounding control */ -# define _FPU_RC_NEAREST 0x00 /* RECOMMENDED */ -# define _FPU_RC_DOWN 0x03 -# define _FPU_RC_UP 0x02 -# define _FPU_RC_ZERO 0x01 - -/* masking of interrupts */ -# define _FPU_MASK_ZM 0x10 /* zero divide */ -# define _FPU_MASK_OM 0x04 /* overflow */ -# define _FPU_MASK_UM 0x08 /* underflow */ -# define _FPU_MASK_XM 0x40 /* inexact */ -# define _FPU_MASK_IM 0x20 /* invalid operation */ - -# define _FPU_RESERVED 0x00c10080 /* These bits are reserved and not changed. */ - -/* Correct IEEE semantics require traps to be enabled at the hardware - level; the kernel then does the emulation and determines whether - generation of signals from those traps was enabled using prctl. */ -# define _FPU_DEFAULT 0x0000003c /* Default value. */ -# define _FPU_IEEE _FPU_DEFAULT - -/* Type of the control word. */ -typedef unsigned int fpu_control_t; - -/* Macros for accessing the hardware control word. */ -# define _FPU_GETCW(cw) \ - __asm__ volatile ("mfspefscr %0" : "=r" (cw)) -# define _FPU_SETCW(cw) \ - __asm__ volatile ("mtspefscr %0" : : "r" (cw)) - -/* Default control word set at startup. */ -extern fpu_control_t __fpu_control; - -#else /* PowerPC 6xx floating-point. */ - -/* rounding control */ -# define _FPU_RC_NEAREST 0x00 /* RECOMMENDED */ -# define _FPU_RC_DOWN 0x03 -# define _FPU_RC_UP 0x02 -# define _FPU_RC_ZERO 0x01 - -# define _FPU_MASK_NI 0x04 /* non-ieee mode */ - -/* masking of interrupts */ -# define _FPU_MASK_ZM 0x10 /* zero divide */ -# define _FPU_MASK_OM 0x40 /* overflow */ -# define _FPU_MASK_UM 0x20 /* underflow */ -# define _FPU_MASK_XM 0x08 /* inexact */ -# define _FPU_MASK_IM 0x80 /* invalid operation */ - -# define _FPU_RESERVED 0xffffff00 /* These bits are reserved are not changed. */ - -/* The fdlibm code requires no interrupts for exceptions. */ -# define _FPU_DEFAULT 0x00000000 /* Default value. */ - -/* IEEE: same as above, but (some) exceptions; - we leave the 'inexact' exception off. - */ -# define _FPU_IEEE 0x000000f0 - -/* Type of the control word. */ -typedef unsigned int fpu_control_t; - -/* Macros for accessing the hardware control word. */ -# define _FPU_GETCW(cw) \ - ({union { double __d; unsigned long long __ll; } __u; \ - register double __fr; \ - __asm__ ("mffs %0" : "=f" (__fr)); \ - __u.__d = __fr; \ - (cw) = (fpu_control_t) __u.__ll; \ - (fpu_control_t) __u.__ll; \ - }) - -# define _FPU_SETCW(cw) \ - { union { double __d; unsigned long long __ll; } __u; \ - register double __fr; \ - __u.__ll = 0xfff80000LL << 32; /* This is a QNaN. */ \ - __u.__ll |= (cw) & 0xffffffffLL; \ - __fr = __u.__d; \ - __asm__ ("mtfsf 255,%0" : : "f" (__fr)); \ - } - -/* Default control word set at startup. */ -extern fpu_control_t __fpu_control; - -#endif /* PowerPC 6xx floating-point. */ - -#endif /* _FPU_CONTROL_H */ |