summaryrefslogtreecommitdiffstats
path: root/sys/mips
diff options
context:
space:
mode:
authorimp <imp@FreeBSD.org>2009-02-15 20:05:13 +0000
committerimp <imp@FreeBSD.org>2009-02-15 20:05:13 +0000
commita16fa0157d62b089866e57a021c8492d9c7ec7ef (patch)
tree1e3ad5e861b0ec62af8b83120d73bda8842d3b35 /sys/mips
parentf1ddced05096138904437a1e4e8b05807040d4f1 (diff)
downloadFreeBSD-src-a16fa0157d62b089866e57a021c8492d9c7ec7ef.zip
FreeBSD-src-a16fa0157d62b089866e57a021c8492d9c7ec7ef.tar.gz
It appears that none of the contents of this file are necessary, so
replace the amd64-ish version with a blank version.
Diffstat (limited to 'sys/mips')
-rw-r--r--sys/mips/include/fpu.h102
1 files changed, 1 insertions, 101 deletions
diff --git a/sys/mips/include/fpu.h b/sys/mips/include/fpu.h
index 88932ed..4bd1924 100644
--- a/sys/mips/include/fpu.h
+++ b/sys/mips/include/fpu.h
@@ -1,109 +1,9 @@
/*-
- * Copyright (c) 1990 The Regents of the University of California.
- * All rights reserved.
+ * This file is in the public domain.
*
- * This code is derived from software contributed to Berkeley by
- * William Jolitz.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- * 4. Neither the name of the University nor the names of its contributors
- * may be used to endorse or promote products derived from this software
- * without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- *
- * from: @(#)npx.h 5.3 (Berkeley) 1/18/91
* $FreeBSD$
*/
-
-/*
- * Floating Point Data Structures and Constants
- * W. Jolitz 1/90
- */
-
#ifndef _MACHINE_FPU_H_
#define _MACHINE_FPU_H_
-/* Contents of each x87 floating point accumulator */
-struct fpacc87 {
- u_char fp_bytes[10];
-};
-
-/* Contents of each SSE extended accumulator */
-struct xmmacc {
- u_char xmm_bytes[16];
-};
-
-struct envxmm {
- u_int16_t en_cw; /* control word (16bits) */
- u_int16_t en_sw; /* status word (16bits) */
- u_int8_t en_tw; /* tag word (8bits) */
- u_int8_t en_zero;
- u_int16_t en_opcode; /* opcode last executed (11 bits ) */
- u_int64_t en_rip; /* floating point instruction pointer */
- u_int64_t en_rdp; /* floating operand pointer */
- u_int32_t en_mxcsr; /* SSE sontorol/status register */
- u_int32_t en_mxcsr_mask; /* valid bits in mxcsr */
-};
-
-struct savefpu {
- struct envxmm sv_env;
- struct {
- struct fpacc87 fp_acc;
- u_char fp_pad[6]; /* padding */
- } sv_fp[8];
- struct xmmacc sv_xmm[16];
- u_char sv_pad[96];
-} __aligned(16);
-
-/*
- * The hardware default control word for i387's and later coprocessors is
- * 0x37F, giving:
- *
- * round to nearest
- * 64-bit precision
- * all exceptions masked.
- *
- * FreeBSD/i386 uses 53 bit precision for things like fadd/fsub/fsqrt etc
- * because of the difference between memory and fpu register stack arguments.
- * If its using an intermediate fpu register, it has 80/64 bits to work
- * with. If it uses memory, it has 64/53 bits to work with. However,
- * gcc is aware of this and goes to a fair bit of trouble to make the
- * best use of it.
- *
- * This is mostly academic for AMD64, because the ABI prefers the use
- * SSE2 based math. For FreeBSD/amd64, we go with the default settings.
- */
-#define __INITIAL_FPUCW__ 0x037F
-#define __INITIAL_MXCSR__ 0x1F80
-#define __INITIAL_MXCSR_MASK__ 0xFFBF
-
-#ifdef _KERNEL
-int fpudna(void);
-void fpudrop(void);
-void fpuexit(struct thread *td);
-int fpuformat(void);
-int fpugetregs(struct thread *td, struct savefpu *addr);
-void fpuinit(void);
-void fpusetregs(struct thread *td, struct savefpu *addr);
-int fputrap(void);
-#endif
-
#endif /* !_MACHINE_FPU_H_ */
OpenPOWER on IntegriCloud