diff options
author | peter <peter@FreeBSD.org> | 2003-11-08 02:39:46 +0000 |
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committer | peter <peter@FreeBSD.org> | 2003-11-08 02:39:46 +0000 |
commit | e27aec25abddc9701fed6b7bf15735b5959b9320 (patch) | |
tree | 4b9faca1c3b591235db0ab0e747bebc1de70d167 /sys/amd64/include/npx.h | |
parent | 0084fd36b857d4130110925e067f452a219039ea (diff) | |
download | FreeBSD-src-e27aec25abddc9701fed6b7bf15735b5959b9320.zip FreeBSD-src-e27aec25abddc9701fed6b7bf15735b5959b9320.tar.gz |
Rename npx* to fpu*. I haven't done the flags/function names yet.
Diffstat (limited to 'sys/amd64/include/npx.h')
-rw-r--r-- | sys/amd64/include/npx.h | 114 |
1 files changed, 0 insertions, 114 deletions
diff --git a/sys/amd64/include/npx.h b/sys/amd64/include/npx.h deleted file mode 100644 index 81ef808..0000000 --- a/sys/amd64/include/npx.h +++ /dev/null @@ -1,114 +0,0 @@ -/*- - * Copyright (c) 1990 The Regents of the University of California. - * All rights reserved. - * - * 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. - * 3. All advertising materials mentioning features or use of this software - * must display the following acknowledgement: - * This product includes software developed by the University of - * California, Berkeley and its contributors. - * 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 - * $FreeBSD$ - */ - -/* - * 287/387 NPX Coprocessor Data Structures and Constants - * W. Jolitz 1/90 - */ - -#ifndef _MACHINE_NPX_H_ -#define _MACHINE_NPX_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_NPXCW__ 0x037F -#define __INITIAL_MXCSR__ 0x1F80 -#define __INITIAL_MXCSR_MASK__ 0xFFBF - -#ifdef _KERNEL -int npxdna(void); -void npxdrop(void); -void npxexit(struct thread *td); -int npxformat(void); -int npxgetregs(struct thread *td, struct savefpu *addr); -void npxinit(u_short control); -void npxsave(struct savefpu *addr); -void npxsetregs(struct thread *td, struct savefpu *addr); -int npxtrap(void); -#endif - -#endif /* !_MACHINE_NPX_H_ */ |