| npx.c (2056) | npx.c (2631) |
|---|---|
| 1/*- 2 * Copyright (c) 1990 William Jolitz. 3 * Copyright (c) 1991 The Regents of the University of California. 4 * All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: --- 18 unchanged lines hidden (view full) --- 27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 32 * SUCH DAMAGE. 33 * 34 * from: @(#)npx.c 7.2 (Berkeley) 5/12/91 | 1/*- 2 * Copyright (c) 1990 William Jolitz. 3 * Copyright (c) 1991 The Regents of the University of California. 4 * All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: --- 18 unchanged lines hidden (view full) --- 27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 32 * SUCH DAMAGE. 33 * 34 * from: @(#)npx.c 7.2 (Berkeley) 5/12/91 |
| 35 * $Id: npx.c,v 1.9 1994/06/11 05:17:15 davidg Exp $ | 35 * $Id: npx.c,v 1.10 1994/08/13 03:50:11 wollman Exp $ |
| 36 */ 37 38#include "npx.h" 39#if NNPX > 0 40 41#include <sys/param.h> 42#include <sys/systm.h> 43#include <sys/conf.h> --- 70 unchanged lines hidden (view full) --- 114 npxprobe, npxattach, "npx", 115}; 116 117u_int npx0_imask; 118struct proc *npxproc; 119 120static bool_t npx_ex16; 121static bool_t npx_exists; | 36 */ 37 38#include "npx.h" 39#if NNPX > 0 40 41#include <sys/param.h> 42#include <sys/systm.h> 43#include <sys/conf.h> --- 70 unchanged lines hidden (view full) --- 114 npxprobe, npxattach, "npx", 115}; 116 117u_int npx0_imask; 118struct proc *npxproc; 119 120static bool_t npx_ex16; 121static bool_t npx_exists; |
| 122int hw_float; |
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| 122static struct gate_descriptor npx_idt_probeintr; 123static int npx_intrno; 124static volatile u_int npx_intrs_while_probing; 125static bool_t npx_irq13; 126static volatile u_int npx_traps_while_probing; 127 128/* 129 * Special interrupt handlers. Someday intr0-intr15 will be used to count --- 131 unchanged lines hidden (view full) --- 261 fnstsw(&status); 262 if ((status & 0xb8ff) == 0) { 263 /* 264 * Good, now check for a proper control word. 265 */ 266 control = 0x5a5a; 267 fnstcw(&control); 268 if ((control & 0x1f3f) == 0x033f) { | 123static struct gate_descriptor npx_idt_probeintr; 124static int npx_intrno; 125static volatile u_int npx_intrs_while_probing; 126static bool_t npx_irq13; 127static volatile u_int npx_traps_while_probing; 128 129/* 130 * Special interrupt handlers. Someday intr0-intr15 will be used to count --- 131 unchanged lines hidden (view full) --- 262 fnstsw(&status); 263 if ((status & 0xb8ff) == 0) { 264 /* 265 * Good, now check for a proper control word. 266 */ 267 control = 0x5a5a; 268 fnstcw(&control); 269 if ((control & 0x1f3f) == 0x033f) { |
| 269 npx_exists = 1; | 270 hw_float = npx_exists = 1; |
| 270 /* 271 * We have an npx, now divide by 0 to see if exception 272 * 16 works. 273 */ 274 control &= ~(1 << 2); /* enable divide by 0 trap */ 275 fldcw(&control); 276 npx_traps_while_probing = npx_intrs_while_probing = 0; 277 fp_divide_by_0(); --- 40 unchanged lines hidden (view full) --- 318 */ 319int 320npxattach(dvp) 321 struct isa_device *dvp; 322{ 323 if (!npx_ex16 && !npx_irq13) { 324 if (npx_exists) { 325 printf("npx%d: Error reporting broken, using 387 emulator\n",dvp->id_unit); | 271 /* 272 * We have an npx, now divide by 0 to see if exception 273 * 16 works. 274 */ 275 control &= ~(1 << 2); /* enable divide by 0 trap */ 276 fldcw(&control); 277 npx_traps_while_probing = npx_intrs_while_probing = 0; 278 fp_divide_by_0(); --- 40 unchanged lines hidden (view full) --- 319 */ 320int 321npxattach(dvp) 322 struct isa_device *dvp; 323{ 324 if (!npx_ex16 && !npx_irq13) { 325 if (npx_exists) { 326 printf("npx%d: Error reporting broken, using 387 emulator\n",dvp->id_unit); |
| 326 npx_exists = 0; | 327 hw_float = npx_exists = 0; |
| 327 } else { 328 printf("npx%d: 387 Emulator\n",dvp->id_unit); 329 } 330 } 331 npxinit(__INITIAL_NPXCW__); 332 return (1); /* XXX unused */ 333} 334 --- 220 unchanged lines hidden --- | 328 } else { 329 printf("npx%d: 387 Emulator\n",dvp->id_unit); 330 } 331 } 332 npxinit(__INITIAL_NPXCW__); 333 return (1); /* XXX unused */ 334} 335 --- 220 unchanged lines hidden --- |