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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)
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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