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author | Geoff Keating <geoffk@cygnus.com> | 2001-12-06 00:12:11 +0000 |
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committer | Geoff Keating <geoffk@cygnus.com> | 2001-12-06 00:12:11 +0000 |
commit | 578618390583aa9c1e3dc70b87c1f7d19478e996 (patch) | |
tree | 5c566bcdd9bf30c8601b4f34da9cd6893362630f /sysdeps/powerpc/fpu_control.h | |
parent | fa13c459a156097766bedb4f1ca6f86f516e03b3 (diff) | |
download | glibc-578618390583aa9c1e3dc70b87c1f7d19478e996.zip glibc-578618390583aa9c1e3dc70b87c1f7d19478e996.tar.gz glibc-578618390583aa9c1e3dc70b87c1f7d19478e996.tar.bz2 |
* sysdeps/powerpc/__longjmp.S: Don't restore FP registers.
* sysdeps/powerpc/fpu/__longjmp.S: Do restore FP registers.
* sysdeps/powerpc/setjmp.S: Don't save FP registers.
* sysdeps/powerpc/fpu/setjmp.S: Do save FP registers.
* sysdeps/powerpc/fclrexcpt.c: Move to...
* sysdeps/powerpc/fpu/fclrexcpt.c: ... here.
* sysdeps/powerpc/fpu_control.h: Move to...
* sysdeps/powerpc/fpu/fpu_control.h: ... here.
2001-12-05 Geoff Keating <geoffk@redhat.com>
* sysdeps/powerpc/__longjmp.S: Don't restore FP registers.
* sysdeps/powerpc/fpu/__longjmp.S: Do restore FP registers.
* sysdeps/powerpc/setjmp.S: Don't save FP registers.
* sysdeps/powerpc/fpu/setjmp.S: Do save FP registers.
* sysdeps/powerpc/fclrexcpt.c: Move to...
* sysdeps/powerpc/fpu/fclrexcpt.c: ... here.
* sysdeps/powerpc/fpu_control.h: Move to...
* sysdeps/powerpc/fpu/fpu_control.h: ... here.
Diffstat (limited to 'sysdeps/powerpc/fpu_control.h')
-rw-r--r-- | sysdeps/powerpc/fpu_control.h | 67 |
1 files changed, 0 insertions, 67 deletions
diff --git a/sysdeps/powerpc/fpu_control.h b/sysdeps/powerpc/fpu_control.h deleted file mode 100644 index 7b58b7b..0000000 --- a/sysdeps/powerpc/fpu_control.h +++ /dev/null @@ -1,67 +0,0 @@ -/* FPU control word definitions. PowerPC version. - Copyright (C) 1996, 1997, 1998 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, write to the Free - Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA - 02111-1307 USA. */ - -#ifndef _FPU_CONTROL_H -#define _FPU_CONTROL_H - -/* 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 __attribute__ ((__mode__ (__SI__))); - -/* Macros for accessing the hardware control word. */ -#define _FPU_GETCW(cw) ( { \ - union { double d; fpu_control_t cw[2]; } tmp __attribute__ ((__aligned__(8))); \ - __asm__ ("mffs 0; stfd%U0 0,%0" : "=m" (tmp.d) : : "fr0"); \ - (cw)=tmp.cw[1]; \ - tmp.cw[1]; } ) -#define _FPU_SETCW(cw) { \ - union { double d; fpu_control_t cw[2]; } tmp __attribute__ ((__aligned__(8))); \ - tmp.cw[0] = 0xFFF80000; /* More-or-less arbitrary; this is a QNaN. */ \ - tmp.cw[1] = cw; \ - __asm__ ("lfd%U0 0,%0; mtfsf 255,0" : : "m" (tmp.d) : "fr0"); \ -} - -/* Default control word set at startup. */ -extern fpu_control_t __fpu_control; - -#endif /* _FPU_CONTROL_H */ |