c6bfe5c4d7
I've moved the ARM port from ports to the main sysdeps hierarchy. Beyond the README update, the move of the files was simply git mv ports/sysdeps/arm sysdeps/arm git mv ports/sysdeps/unix/arm sysdeps/unix/arm git mv ports/sysdeps/unix/sysv/linux/arm sysdeps/unix/sysv/linux/arm and in addition to the ChangeLog entries here, I put a note at the top of ports/ChangeLog.arm similar to that at the top of ChangeLog.powerpc. There is deliberately no NEWS change, as I think it makes the most sense to put in a general note above all ports having moved if we can achieve that for 2.20. Tested that disassembly of installed shared libraries for arm is the same before and after this patch, except for data (not instructions) in ld.so (there are assertions in sysdeps/arm/dl-machine.h, and the path by which that file is found, and so by which it appears in the assertion message, changes as a result of the move). * sysdeps/arm: Move directory from ports/sysdeps/arm. * sysdeps/unix/arm: Move directory from ports/sysdeps/unix/arm. * sysdeps/unix/sysv/linux/arm: Move directory from ports/sysdeps/unix/sysv/linux/arm. * README: Update listing for arm-*-linux-gnueabi. ports/ChangeLog.arm: * sysdeps/arm: Move directory to ../sysdeps/arm. * sysdeps/unix/arm: Move directory to ../sysdeps.arm. * sysdeps/unix/sysv/linux/arm: Move directory to ../sysdeps/unix/sysv/linux/arm.
64 lines
2.2 KiB
C
64 lines
2.2 KiB
C
/* FPU control word definitions. ARM VFP version.
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Copyright (C) 2004-2014 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library. If not, see
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<http://www.gnu.org/licenses/>. */
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#ifndef _FPU_CONTROL_H
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#define _FPU_CONTROL_H
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#if !(defined(_LIBC) && !defined(_LIBC_TEST)) && defined(__SOFTFP__)
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#define _FPU_RESERVED 0xffffffff
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#define _FPU_DEFAULT 0x00000000
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typedef unsigned int fpu_control_t;
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#define _FPU_GETCW(cw) (cw) = 0
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#define _FPU_SETCW(cw) (void) (cw)
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extern fpu_control_t __fpu_control;
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#else
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/* masking of interrupts */
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#define _FPU_MASK_IM 0x00000100 /* invalid operation */
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#define _FPU_MASK_ZM 0x00000200 /* divide by zero */
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#define _FPU_MASK_OM 0x00000400 /* overflow */
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#define _FPU_MASK_UM 0x00000800 /* underflow */
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#define _FPU_MASK_PM 0x00001000 /* inexact */
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/* Some bits in the FPSCR are not yet defined. They must be preserved when
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modifying the contents. */
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#define _FPU_RESERVED 0x00086060
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#define _FPU_DEFAULT 0x00000000
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/* Default + exceptions enabled. */
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#define _FPU_IEEE (_FPU_DEFAULT | 0x00001f00)
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/* Type of the control word. */
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typedef unsigned int fpu_control_t;
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/* Macros for accessing the hardware control word. */
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/* This is fmrx %0, fpscr. */
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#define _FPU_GETCW(cw) \
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__asm__ __volatile__ ("mrc p10, 7, %0, cr1, cr0, 0" : "=r" (cw))
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/* This is fmxr fpscr, %0. */
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#define _FPU_SETCW(cw) \
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__asm__ __volatile__ ("mcr p10, 7, %0, cr1, cr0, 0" : : "r" (cw))
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/* Default control word set at startup. */
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extern fpu_control_t __fpu_control;
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#endif /* __SOFTFP__ */
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#endif /* _FPU_CONTROL_H */
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