npx.h (970c23b2e61f3919cb38967ca9249e9fd6307034) npx.h (699d648aabcebb491ac2ada593f6f97281e5903a)
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

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133 * because it makes the results of calculations depend on whether
134 * intermediate values are stored in memory or in FPU registers.
135 */
136#define __INITIAL_NPXCW__ 0x127F
137#define __INITIAL_MXCSR__ 0x1F80
138
139#ifdef _KERNEL
140
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

--- 124 unchanged lines hidden (view full) ---

133 * because it makes the results of calculations depend on whether
134 * intermediate values are stored in memory or in FPU registers.
135 */
136#define __INITIAL_NPXCW__ 0x127F
137#define __INITIAL_MXCSR__ 0x1F80
138
139#ifdef _KERNEL
140
141#define IO_NPX 0x0F0 /* Numeric Coprocessor */
142#define IO_NPXSIZE 16 /* 80387/80487 NPX registers */
143
144#define IRQ_NPX 13
145
146struct fpu_kern_ctx {
147 union savefpu hwstate;
148 union savefpu *prev;
149 uint32_t flags;
150};
151#define FPU_KERN_CTX_NPXINITDONE 0x01
152
153#define PCB_USER_FPU(pcb) (((pcb)->pcb_flags & PCB_KERNNPX) == 0)
154
141struct fpu_kern_ctx {
142 union savefpu hwstate;
143 union savefpu *prev;
144 uint32_t flags;
145};
146#define FPU_KERN_CTX_NPXINITDONE 0x01
147
148#define PCB_USER_FPU(pcb) (((pcb)->pcb_flags & PCB_KERNNPX) == 0)
149
155/* full reset on some systems, NOP on others */
156#define npx_full_reset() outb(IO_NPX + 1, 0)
157
158int npxdna(void);
159void npxdrop(void);
160void npxexit(struct thread *td);
161int npxformat(void);
162int npxgetregs(struct thread *td, union savefpu *addr);
163int npxgetuserregs(struct thread *td, union savefpu *addr);
164void npxinit(void);
165void npxsave(union savefpu *addr);

--- 17 unchanged lines hidden --- 		150int npxdna(void);
151void npxdrop(void);
152void npxexit(struct thread *td);
153int npxformat(void);
154int npxgetregs(struct thread *td, union savefpu *addr);
155int npxgetuserregs(struct thread *td, union savefpu *addr);
156void npxinit(void);
157void npxsave(union savefpu *addr);

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