| support.s (12990) | support.s (13000) |
|---|---|
| 1/*- 2 * Copyright (c) 1993 The Regents of the University of California. 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright --- 16 unchanged lines hidden (view full) --- 25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 * SUCH DAMAGE. 32 * | 1/*- 2 * Copyright (c) 1993 The Regents of the University of California. 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright --- 16 unchanged lines hidden (view full) --- 25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 * SUCH DAMAGE. 32 * |
| 33 * $Id: support.s,v 1.26 1995/12/10 03:11:32 bde Exp $ | 33 * $Id: support.s,v 1.27 1995/12/23 16:46:31 davidg Exp $ |
| 34 */ 35 36#include "assym.s" /* system definitions */ 37#include "errno.h" /* error return codes */ 38#include "machine/asmacros.h" /* miscellaneous asm macros */ 39#include "machine/cputypes.h" /* types of CPUs */ 40 41#define KDSEL 0x10 /* kernel data selector */ --- 308 unchanged lines hidden (view full) --- 350 * looks like there is an off by one error, and of course it caused an off 351 * by one error in several places. 352 */ 353 cmpl $VM_MAXUSER_ADDRESS,%eax 354 ja copyout_fault 355 356#if defined(I386_CPU) 357 | 34 */ 35 36#include "assym.s" /* system definitions */ 37#include "errno.h" /* error return codes */ 38#include "machine/asmacros.h" /* miscellaneous asm macros */ 39#include "machine/cputypes.h" /* types of CPUs */ 40 41#define KDSEL 0x10 /* kernel data selector */ --- 308 unchanged lines hidden (view full) --- 350 * looks like there is an off by one error, and of course it caused an off 351 * by one error in several places. 352 */ 353 cmpl $VM_MAXUSER_ADDRESS,%eax 354 ja copyout_fault 355 356#if defined(I386_CPU) 357 |
| 358#if defined(I486_CPU) || defined(I586_CPU) | 358#if defined(I486_CPU) || defined(I586_CPU) || defined(I686_CPU) |
| 359 cmpl $CPUCLASS_386,_cpu_class 360 jne 3f 361#endif 362/* 363 * We have to check each PTE for user write permission. 364 * The checking may cause a page fault, so it is important to set 365 * up everything for return via copyout_fault before here. 366 */ --- 174 unchanged lines hidden (view full) --- 541 */ 542ENTRY(suword) 543 movl _curpcb,%ecx 544 movl $fusufault,PCB_ONFAULT(%ecx) 545 movl 4(%esp),%edx 546 547#if defined(I386_CPU) 548 | 359 cmpl $CPUCLASS_386,_cpu_class 360 jne 3f 361#endif 362/* 363 * We have to check each PTE for user write permission. 364 * The checking may cause a page fault, so it is important to set 365 * up everything for return via copyout_fault before here. 366 */ --- 174 unchanged lines hidden (view full) --- 541 */ 542ENTRY(suword) 543 movl _curpcb,%ecx 544 movl $fusufault,PCB_ONFAULT(%ecx) 545 movl 4(%esp),%edx 546 547#if defined(I386_CPU) 548 |
| 549#if defined(I486_CPU) || defined(I586_CPU) | 549#if defined(I486_CPU) || defined(I586_CPU) || defined(I686_CPU) |
| 550 cmpl $CPUCLASS_386,_cpu_class 551 jne 2f /* we only have to set the right segment selector */ | 550 cmpl $CPUCLASS_386,_cpu_class 551 jne 2f /* we only have to set the right segment selector */ |
| 552#endif /* I486_CPU || I586_CPU */ | 552#endif /* I486_CPU || I586_CPU || I686_CPU */ |
| 553 554 /* XXX - page boundary crossing is still not handled */ 555 movl %edx,%eax 556 shrl $IDXSHIFT,%edx 557 andb $0xfc,%dl 558 movb _PTmap(%edx),%dl 559 andb $0x7,%dl /* must be VALID + USERACC + WRITE */ 560 cmpb $0x7,%dl --- 22 unchanged lines hidden (view full) --- 583 584ENTRY(susword) 585 movl _curpcb,%ecx 586 movl $fusufault,PCB_ONFAULT(%ecx) 587 movl 4(%esp),%edx 588 589#if defined(I386_CPU) 590 | 553 554 /* XXX - page boundary crossing is still not handled */ 555 movl %edx,%eax 556 shrl $IDXSHIFT,%edx 557 andb $0xfc,%dl 558 movb _PTmap(%edx),%dl 559 andb $0x7,%dl /* must be VALID + USERACC + WRITE */ 560 cmpb $0x7,%dl --- 22 unchanged lines hidden (view full) --- 583 584ENTRY(susword) 585 movl _curpcb,%ecx 586 movl $fusufault,PCB_ONFAULT(%ecx) 587 movl 4(%esp),%edx 588 589#if defined(I386_CPU) 590 |
| 591#if defined(I486_CPU) || defined(I586_CPU) | 591#if defined(I486_CPU) || defined(I586_CPU) || defined(I686_CPU) |
| 592 cmpl $CPUCLASS_386,_cpu_class 593 jne 2f | 592 cmpl $CPUCLASS_386,_cpu_class 593 jne 2f |
| 594#endif /* I486_CPU || I586_CPU */ | 594#endif /* I486_CPU || I586_CPU || I686_CPU */ |
| 595 596 /* XXX - page boundary crossing is still not handled */ 597 movl %edx,%eax 598 shrl $IDXSHIFT,%edx 599 andb $0xfc,%dl 600 movb _PTmap(%edx),%dl 601 andb $0x7,%dl /* must be VALID + USERACC + WRITE */ 602 cmpb $0x7,%dl --- 23 unchanged lines hidden (view full) --- 626ALTENTRY(suibyte) 627ENTRY(subyte) 628 movl _curpcb,%ecx 629 movl $fusufault,PCB_ONFAULT(%ecx) 630 movl 4(%esp),%edx 631 632#if defined(I386_CPU) 633 | 595 596 /* XXX - page boundary crossing is still not handled */ 597 movl %edx,%eax 598 shrl $IDXSHIFT,%edx 599 andb $0xfc,%dl 600 movb _PTmap(%edx),%dl 601 andb $0x7,%dl /* must be VALID + USERACC + WRITE */ 602 cmpb $0x7,%dl --- 23 unchanged lines hidden (view full) --- 626ALTENTRY(suibyte) 627ENTRY(subyte) 628 movl _curpcb,%ecx 629 movl $fusufault,PCB_ONFAULT(%ecx) 630 movl 4(%esp),%edx 631 632#if defined(I386_CPU) 633 |
| 634#if defined(I486_CPU) || defined(I586_CPU) | 634#if defined(I486_CPU) || defined(I586_CPU) || defined(I686_CPU) |
| 635 cmpl $CPUCLASS_386,_cpu_class 636 jne 2f | 635 cmpl $CPUCLASS_386,_cpu_class 636 jne 2f |
| 637#endif /* I486_CPU || I586_CPU */ | 637#endif /* I486_CPU || I586_CPU || I686_CPU */ |
| 638 639 movl %edx,%eax 640 shrl $IDXSHIFT,%edx 641 andb $0xfc,%dl 642 movb _PTmap(%edx),%dl 643 andb $0x7,%dl /* must be VALID + USERACC + WRITE */ 644 cmpb $0x7,%dl 645 je 1f --- 314 unchanged lines hidden --- | 638 639 movl %edx,%eax 640 shrl $IDXSHIFT,%edx 641 andb $0xfc,%dl 642 movb _PTmap(%edx),%dl 643 andb $0x7,%dl /* must be VALID + USERACC + WRITE */ 644 cmpb $0x7,%dl 645 je 1f --- 314 unchanged lines hidden --- |