nios2: sync support with glibc

Only static linking is supported for now.
More debugging and analyzing for ld.so, TLS and NPTL
is required. But at least you can bootup a static
root fileystem in Qemu.

1 files changed, 0 insertions, 98 deletions

diff --git a/libc/sysdeps/linux/nios2/fpu_control.h b/libc/sysdeps/linux/nios2/fpu_control.h
deleted file mode 100644
index 4ba51b5eb..000000000
--- a/libc/sysdeps/linux/nios2/fpu_control.h
+++ /dev/null
@@ -1,98 +0,0 @@
-/* FPU control word bits.  Nios2 version.
-   Copyright (C) 1996, 1997, 1998, 1999, 2000 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
-
-/* MIPS FPU floating point control register bits.
- *
- * 31-25  -> floating point conditions code bits 7-1.  These bits are only
- *           available in MIPS IV.
- * 24     -> flush denormalized results to zero instead of
- *           causing unimplemented operation exception.  This bit is only
- *           available for MIPS III and newer.
- * 23     -> Condition bit
- * 22-18  -> reserved (read as 0, write with 0)
- * 17     -> cause bit for unimplemented operation
- * 16     -> cause bit for invalid exception
- * 15     -> cause bit for division by zero exception
- * 14     -> cause bit for overflow exception
- * 13     -> cause bit for underflow exception
- * 12     -> cause bit for inexact exception
- * 11     -> enable exception for invalid exception
- * 10     -> enable exception for division by zero exception
- *  9     -> enable exception for overflow exception
- *  8     -> enable exception for underflow exception
- *  7     -> enable exception for inexact exception
- *  6     -> flag invalid exception
- *  5     -> flag division by zero exception
- *  4     -> flag overflow exception
- *  3     -> flag underflow exception
- *  2     -> flag inexact exception
- *  1-0   -> rounding control
- *
- *
- * Rounding Control:
- * 00 - rounding to nearest (RN)
- * 01 - rounding toward zero (RZ)
- * 10 - rounding (up) toward plus infinity (RP)
- * 11 - rounding (down)toward minus infinity (RM)
- */
-
-#include <features.h>
-
-/* masking of interrupts */
-#define _FPU_MASK_V     0x0800  /* Invalid operation */
-#define _FPU_MASK_Z     0x0400  /* Division by zero  */
-#define _FPU_MASK_O     0x0200  /* Overflow          */
-#define _FPU_MASK_U     0x0100  /* Underflow         */
-#define _FPU_MASK_I     0x0080  /* Inexact operation */
-
-/* flush denormalized numbers to zero */
-#define _FPU_FLUSH_TZ   0x1000000
-
-/* rounding control */
-#define _FPU_RC_NEAREST 0x0     /* RECOMMENDED */
-#define _FPU_RC_ZERO    0x1
-#define _FPU_RC_UP      0x2
-#define _FPU_RC_DOWN    0x3
-
-#define _FPU_RESERVED 0xfe3c0000  /* Reserved bits in cw */
-
-
-/* The fdlibm code requires strict IEEE double precision arithmetic,
-   and no interrupts for exceptions, rounding to nearest.  */
-
-#define _FPU_DEFAULT  0x00000000
-
-/* IEEE:  same as above, but exceptions */
-#define _FPU_IEEE     0x00000F80
-
-/* Type of the control word.  */
-typedef unsigned int fpu_control_t __attribute__ ((__mode__ (__SI__)));
-
-/* Macros for accessing the hardware control word.  */
-#define _FPU_GETCW(cw) __asm__ ("cfc1 %0,$31" : "=r" (cw))
-#define _FPU_SETCW(cw) __asm__ ("ctc1 %0,$31" : : "r" (cw))
-
-#if 0
-/* Default control word set at startup.  */
-extern fpu_control_t __fpu_control;
-#endif
-
-#endif	/* fpu_control.h */