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authorUlrich Drepper <drepper@redhat.com>1997-07-12 23:35:19 +0000
committerUlrich Drepper <drepper@redhat.com>1997-07-12 23:35:19 +0000
commitf21acc89c06c14160eab88246e9dbe0b17eb5f89 (patch)
tree096a11e16faed78c69e77fd79b7c8bb4dc0bd051 /sysdeps/mips/fpu_control.h
parent2d7da676f38bc00f40d2b604036c0295c156529e (diff)
1997-07-13 01:18 Ulrich Drepper <drepper@cygnus.com> * setjmp/setjmp.h: Define _setjmp and _longjmp also if __USE_XOPEN. * sysdeps/unix/sysv/linux/bits/ipc.h: Fix comment. * sysdeps/unix/sysv/linux/bits/msq.h: Likewise. * sysdeps/unix/sysv/linux/bits/sem.h: Likewise. * sysdeps/unix/sysv/linux/bits/shm.h: Likewise. * time/Makefile (routines): Add getdate. * time/time.h: Add prototype for getdate and getdate_r. * time/getdate.c: New file. Provided by Mark Kettenis <kettenis@phys.uva.nl>. 1997-06-30 14:49 H.J. Lu <hjl@gnu.ai.mit.edu> From Ralf Baechle <ralf@informatik.uni-koblenz.de> on Sat Jun 21 18:11:21 1997: * sysdeps/unix/sysv/linux/syscalls.list (swapon): Add __swapon alias. (swapoff): New. * elf/Makefile: Add linker script support. (headers): Add bits/dlfcn.h. * elf/dl-load.c (MAP_BASE_ADDR): New. * elf/dlfcn.h: Include <bits/dlfcn.h>. * elf/elf.h: Add MIPS support. * sysdeps/generic/Dist: Add entry.h. * sysdeps/generic/entry.h: New, define the entry symbol. * elf/rtld.c (_start): Include <entry.h>. Change to ENTRY_POINT. * sysdeps/generic/dl-sysdep.c (_start): Likewise. * mips/elf/start.S (_start): Likewise. * sysdeps/mips/bsd-_setjmp.S: Fix PIC. * sysdeps/mips/bsd-setjmp.S: Likewise. * sysdeps/mips/setjmp.S: Likewise. * mips/elf/start.S: Likewise. * sysdeps/unix/mips/brk.S: Likewise. * sysdeps/unix/mips/sysdep.S: Likewise. * sysdeps/unix/mips/sysdep.h: Likewise. * sysdeps/unix/mips/wait.S: Likewise. * sysdeps/mips/dl-machine.h: Update for Linux/MIPS. * sysdeps/mips/fpu_control.h: Likewise. * sysdeps/generic/bits/dlfcn.h: New file. * sysdeps/mips/rtld-ldscript.in: New for Linux/MIPS. * sysdeps/mips/rtld-parms: Likewise. * sysdeps/mips/bits/dlfcn.h: Likewise. * sysdeps/mips/mips64/rtld-parms: Likewise. * sysdeps/mips/mipsel/rtld-parms: Likewise. * sysdeps/unix/sysv/linux/mips/Dist: Likewise. * sysdeps/unix/sysv/linux/mips/Makefile: Likewise. * sysdeps/unix/sysv/linux/mips/clone.S: Likewise. * sysdeps/unix/sysv/linux/mips/entry.h: Likewise. * sysdeps/unix/sysv/linux/mips/fpregdef.h: Likewise. * sysdeps/unix/sysv/linux/mips/fxstat.c: Likewise. * sysdeps/unix/sysv/linux/mips/kernel_sigaction.h: Likewise. * sysdeps/unix/sysv/linux/mips/kernel_stat.h: Likewise. * sysdeps/unix/sysv/linux/mips/kernel_termios.h: Likewise. * sysdeps/unix/sysv/linux/mips/lxstat.c: Likewise. * sysdeps/unix/sysv/linux/mips/regdef.h: Likewise. * sysdeps/unix/sysv/linux/mips/sgidefs.h: Likewise. * sysdeps/unix/sysv/linux/mips/syscalls.list: Likewise. * sysdeps/unix/sysv/linux/mips/ustat.c: Likewise. * sysdeps/unix/sysv/linux/mips/xmknod.c: Likewise. * sysdeps/unix/sysv/linux/mips/xstat.c: Likewise. * sysdeps/unix/sysv/linux/mips/bits/endian.h: Likewise. * sysdeps/unix/sysv/linux/mips/bits/fcntl.h: Likewise. * sysdeps/unix/sysv/linux/mips/bits/ioctl-types.h: * sysdeps/unix/sysv/linux/mips/bits/ipc.h: Likewise. * sysdeps/unix/sysv/linux/mips/bits/shm.h: Likewise. * sysdeps/unix/sysv/linux/mips/bits/sigaction.h: Likewise. * sysdeps/unix/sysv/linux/mips/bits/signum.h: Likewise. * sysdeps/unix/sysv/linux/mips/bits/socket.h: Likewise. * sysdeps/unix/sysv/linux/mips/bits/stat.h: Likewise. * sysdeps/unix/sysv/linux/mips/bits/statfs.h: Likewise. * sysdeps/unix/sysv/linux/mips/bits/termios.h: Likewise. * sysdeps/unix/sysv/linux/mips/bits/time.h: Likewise. * sysdeps/unix/sysv/linux/mips/sys/acct.h: Likewise. * sysdeps/unix/sysv/linux/mips/sys/asm.h: Likewise. * sysdeps/unix/sysv/linux/mips/sys/cachectl.h: Likewise. * sysdeps/unix/sysv/linux/mips/sys/fpregdef.h: Likewise. * sysdeps/unix/sysv/linux/mips/sys/procfs.h: Likewise. * sysdeps/unix/sysv/linux/mips/sys/regdef.h: Likewise. * sysdeps/unix/sysv/linux/mips/sys/syscall.h: Likewise. * sysdeps/unix/sysv/linux/mips/sys/sysmips.h: Likewise. 1997-04-09 19:05 H.J. Lu (hjl@gnu.ai.mit.edu) * isomac.c (xstrndup): New, use it instead of strndup (). 1997-07-02 08:55 H.J. Lu <hjl@gnu.ai.mit.edu> * sysdeps/i386/dl-machine.h (elf_machine_rel): Print the program name for different sizes. 1997-07-10 15:47 Fila Kolodny <fila@ibi.com> * nis/ypclnt.c: Change references to MAXHOSTNAMELEN to NIS_MAXNAMELEN. Add include of rpcsvc/nis.h. * inet/getnameinfo.c: Delete references to MAXHOSTNAMELEN. * sysdeps/posix/getaddrinfo.c: Likewise. Change size of variable buffer to be big enough to hold an IPv6 address in printable format. 1997-07-12 18:47 Ulrich Drepper <drepper@cygnus.com> * assert/assert.h [!NDEBUG] (assert, assert_perror): Don't use || and && in tests to allow use in C++ code which overloads these operators. Reported by Istvan Marko <istvan@cmdmail.amd.com>. * configure.in: Move mips64* recognition before mips*. Patch by Zack Weinberg <zack@rabi.phys.columbia.edu>. 1997-07-03 20:44 Andreas Schwab <schwab@issan.informatik.uni-dortmund.de> * Makerules (lib%.so, $(common-objpfx)libc.so): Don't use automatic variables in dependency lists. (build-shlib): Always filter out the version script file. * extra-lib.mk ($(objpfx)$(lib).so): Depend on version script. 1997-07-12 17:56 Ulrich Drepper <drepper@cygnus.com> * login/login.c (tty_name): Test return value of ttyname_r for != 0, not < 0. * misc/ttyslot.c (ttyslot): Test return value of ttyname_r for == 0, not >= 0. * sysdeps/unix/getlogin.c (getlogin): Test return value of ttyname_r for != 0. * sysdeps/unix/getlogin_r.c (getlogin_r): Likewise. 1997-07-10 Andreas Jaeger <aj@arthur.rhein-neckar.de> * login/utmp_file.c (getutline_r_file): Fix type: compare with *result. 1997-07-11 00:21 Mark Kettenis <kettenis@phys.uva.nl> * login/Makefile (headers): Add utmpx.h and bits/utmpx.h. 1997-07-09 19:21 Mark Kettenis <kettenis@phys.uva.nl> * login/programs/utmpd.c, login/programs/database.c, login/programs/request.c: Prepare messages for internationalization. * login/programs/utmpd.c: (main): Change handling of errors in opening the database. * login/programs/database.c: (open_database, synchronize_dtatabase, initialize_database): Properly handle errors. (get_mtime): Use fstat instead of stat. All callers changed. * login/getutent_r.c: Make setutxent a weak alias for __setutxent. * login/getutent.c: Rename getutent to __getutent and make getutent a weak alias. Make getutxent a weak alias for __getutent. * login/utmpx.h: New file. * sysdeps/gnu/bits/utmp.h: Cleanup. Added comments. * sysdeps/gnu/bits/utmpx.h: New file. * stdio-common/strops.c: Partialy undo last change. Will need more investigation.
Diffstat (limited to 'sysdeps/mips/fpu_control.h')
-rw-r--r--sysdeps/mips/fpu_control.h90
1 files changed, 50 insertions, 40 deletions
diff --git a/sysdeps/mips/fpu_control.h b/sysdeps/mips/fpu_control.h
index 36e05a4f6e..e271ae1fcc 100644
--- a/sysdeps/mips/fpu_control.h
+++ b/sysdeps/mips/fpu_control.h
@@ -1,7 +1,7 @@
/* FPU control word bits. Mips version.
Copyright (C) 1996, 1997 Free Software Foundation, Inc.
This file is part of the GNU C Library.
- Contributed by Olaf Flebbe.
+ Contributed by Olaf Flebbe and Ralf Baechle.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public License as
@@ -21,74 +21,84 @@
#ifndef _FPU_CONTROL_H
#define _FPU_CONTROL_H
-/* FP control/status register bit assignments.
+/* MIPS FPU floating point control register bits.
*
- * 31-25 24 23 22-18 17-12 11-7 6-2 1-0
- * (cause) (enables) (flags)
- * | reserved | FS | C | reserved | E V Z O U I | V Z O U I | V Z O U I | RM
+ * 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
*
- * FS: When set, denormalized results are flushed to zero instead of
- * causing an unimplemented operation exception.
- * C: Condition bit.
- * E: Unimplemented Operation.
- * V: Invalid Operation.
- * Z: Division by zero.
- * O: Overflow.
- * U: Underflow.
- * I: Inexact Operation
- * RM: Rounding mode bits
- * 00 (RN) - rounding to nearest
- * 01 (RZ) - rounding toward zero
- * 10 (RP) - rounding down (toward - infinity)
- * 11 (RM) - rounding up (toward + infinity)
*
+ * Rounding Control:
+ * 00 - rounding to nearest (RN)
+ * 01 - rounding toward zero (RZ)
+ * 01 - rounding (up) toward plus infinity (RP)
+ * 11 - rounding (down)toward minus infinity (RM)
*/
#include <features.h>
/* masking of interrupts */
-#define _FPU_MASK_IM (1 << 11)
-#define _FPU_MASK_DM (1 << 24) /* XXX */
-#define _FPU_MASK_ZM (1 << 10)
-#define _FPU_MASK_OM (1 << 9)
-#define _FPU_MASK_UM (1 << 8)
-#define _FPU_MASK_PM (1 << 7)
-
-/* precision control */
-#define _FPU_EXTENDED 0
-#define _FPU_DOUBLE 0
-#define _FPU_SINGLE 0
+#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_DOWN 0x2
-#define _FPU_RC_UP 0x3
+#define _FPU_RC_NEAREST 0x0 /* RECOMMENDED */
#define _FPU_RC_ZERO 0x1
+#define _FPU_RC_UP 0x2
+#define _FPU_RC_DOWN 0x3
-#define _FPU_RESERVED 0xfe7c0000 /* Reserved bits */
+#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 0x0
+#define _FPU_DEFAULT 0x00000600
/* IEEE: same as above, but exceptions */
-#define _FPU_IEEE (0x1f << 7)
+#define _FPU_IEEE 0x00000F80
/* Type of the control word. */
-typedef unsigned int fpu_control_t;
+typedef unsigned int fpu_control_t __attribute__ ((__mode__ (__HI__)));
/* Macros for accessing the hardware control word. */
-#define _FPU_GETCW(cw) __asm__ ("cfc1 %0, $31; nop; nop" : "=r" (cw))
-#define _FPU_SETCW(cw) __asm__ ("ctc1 %0, $31; nop; nop" : : "r" (cw))
+#define _FPU_GETCW(cw) __asm__ ("cfc1 %0,$31" : "=r" (cw) : )
+#define _FPU_SETCW(cw) __asm__ ("ctc1 %0,$31" : : "r" (cw))
/* Default control word set at startup. */
extern fpu_control_t __fpu_control;
__BEGIN_DECLS
-/* Called at startup. It can be used to manipulate fpu control register. */
+/* Called at startup. It can be used to manipulate the fpu control
+ register. */
extern void __setfpucw __P ((fpu_control_t));
__END_DECLS