| fpu.h (189412) | fpu.h (208833) |
|---|---|
| 1/*- 2 * Copyright (c) 1990 The Regents of the University of California. 3 * All rights reserved. 4 * 5 * This code is derived from software contributed to Berkeley by 6 * William Jolitz. 7 * 8 * Redistribution and use in source and binary forms, with or without --- 16 unchanged lines hidden (view full) --- 25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 30 * SUCH DAMAGE. 31 * 32 * from: @(#)npx.h 5.3 (Berkeley) 1/18/91 | 1/*- 2 * Copyright (c) 1990 The Regents of the University of California. 3 * All rights reserved. 4 * 5 * This code is derived from software contributed to Berkeley by 6 * William Jolitz. 7 * 8 * Redistribution and use in source and binary forms, with or without --- 16 unchanged lines hidden (view full) --- 25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 30 * SUCH DAMAGE. 31 * 32 * from: @(#)npx.h 5.3 (Berkeley) 1/18/91 |
| 33 * $FreeBSD: head/sys/amd64/include/fpu.h 189412 2009-03-05 16:56:16Z jhb $ | 33 * $FreeBSD: head/sys/amd64/include/fpu.h 208833 2010-06-05 15:59:59Z kib $ |
| 34 */ 35 36/* 37 * Floating Point Data Structures and Constants 38 * W. Jolitz 1/90 39 */ 40 41#ifndef _MACHINE_FPU_H_ --- 26 unchanged lines hidden (view full) --- 68 struct { 69 struct fpacc87 fp_acc; 70 u_char fp_pad[6]; /* padding */ 71 } sv_fp[8]; 72 struct xmmacc sv_xmm[16]; 73 u_char sv_pad[96]; 74} __aligned(16); 75 | 34 */ 35 36/* 37 * Floating Point Data Structures and Constants 38 * W. Jolitz 1/90 39 */ 40 41#ifndef _MACHINE_FPU_H_ --- 26 unchanged lines hidden (view full) --- 68 struct { 69 struct fpacc87 fp_acc; 70 u_char fp_pad[6]; /* padding */ 71 } sv_fp[8]; 72 struct xmmacc sv_xmm[16]; 73 u_char sv_pad[96]; 74} __aligned(16); 75 |
| 76#ifdef _KERNEL 77struct fpu_kern_ctx { 78 struct savefpu hwstate; 79 struct savefpu *prev; 80 uint32_t flags; 81}; 82#define FPU_KERN_CTX_FPUINITDONE 0x01 83 84#define PCB_USER_FPU(pcb) (((pcb)->pcb_flags & PCB_KERNFPU) == 0) 85#endif 86 |
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| 76/* 77 * The hardware default control word for i387's and later coprocessors is 78 * 0x37F, giving: 79 * 80 * round to nearest 81 * 64-bit precision 82 * all exceptions masked. 83 * --- 13 unchanged lines hidden (view full) --- 97#define __INITIAL_MXCSR_MASK__ 0xFFBF 98 99#ifdef _KERNEL 100void fpudna(void); 101void fpudrop(void); 102void fpuexit(struct thread *td); 103int fpuformat(void); 104int fpugetregs(struct thread *td, struct savefpu *addr); | 87/* 88 * The hardware default control word for i387's and later coprocessors is 89 * 0x37F, giving: 90 * 91 * round to nearest 92 * 64-bit precision 93 * all exceptions masked. 94 * --- 13 unchanged lines hidden (view full) --- 108#define __INITIAL_MXCSR_MASK__ 0xFFBF 109 110#ifdef _KERNEL 111void fpudna(void); 112void fpudrop(void); 113void fpuexit(struct thread *td); 114int fpuformat(void); 115int fpugetregs(struct thread *td, struct savefpu *addr); |
| 116int fpugetuserregs(struct thread *td, struct savefpu *addr); |
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| 105void fpuinit(void); 106void fpusetregs(struct thread *td, struct savefpu *addr); | 117void fpuinit(void); 118void fpusetregs(struct thread *td, struct savefpu *addr); |
| 119void fpusetuserregs(struct thread *td, struct savefpu *addr); |
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| 107int fputrap(void); | 120int fputrap(void); |
| 121int fpu_kern_enter(struct thread *td, struct fpu_kern_ctx *ctx, 122 u_int flags); 123int fpu_kern_leave(struct thread *td, struct fpu_kern_ctx *ctx); 124int fpu_kern_thread(u_int flags); 125int is_fpu_kern_thread(u_int flags); 126 127/* 128 * Flags for fpu_kern_enter() and fpu_kern_thread(). 129 */ 130#define FPU_KERN_NORMAL 0x0000 131 |
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| 108#endif 109 110#endif /* !_MACHINE_FPU_H_ */ | 132#endif 133 134#endif /* !_MACHINE_FPU_H_ */ |