c3e289e1ce
Kernel sources for 64-bit PowerPC, along with build-system changes to keep 32-bit kernels compiling (build system changes for 64-bit kernels are coming later). Existing 32-bit PowerPC kernel configurations must be updated after this change to specify their architecture.
499 lines
10 KiB
C
499 lines
10 KiB
C
/*-
|
|
* Copyright (C) 2002 Benno Rice
|
|
* All rights reserved.
|
|
*
|
|
* 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.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY Benno Rice ``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 TOOLS GMBH 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.
|
|
*/
|
|
/*-
|
|
* Copyright (C) 1993 Wolfgang Solfrank.
|
|
* Copyright (C) 1993 TooLs GmbH.
|
|
* All rights reserved.
|
|
*
|
|
* 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 TooLs GmbH.
|
|
* 4. The name of TooLs GmbH may not be used to endorse or promote products
|
|
* derived from this software without specific prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY TOOLS GMBH ``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 TOOLS GMBH 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.
|
|
*/
|
|
|
|
#include <sys/cdefs.h>
|
|
__FBSDID("$FreeBSD$");
|
|
|
|
#include <sys/param.h>
|
|
#include <sys/lock.h>
|
|
#include <sys/mutex.h>
|
|
#include <sys/systm.h>
|
|
#include <sys/proc.h>
|
|
|
|
#include <vm/vm.h>
|
|
#include <vm/pmap.h>
|
|
#include <vm/vm_map.h>
|
|
|
|
#include <machine/pcb.h>
|
|
#include <machine/sr.h>
|
|
#include <machine/slb.h>
|
|
|
|
int setfault(faultbuf); /* defined in locore.S */
|
|
|
|
/*
|
|
* Makes sure that the right segment of userspace is mapped in.
|
|
*/
|
|
|
|
#ifdef __powerpc64__
|
|
static __inline void
|
|
set_user_sr(pmap_t pm, const void *addr)
|
|
{
|
|
register_t esid, vsid, slb1, slb2;
|
|
|
|
esid = USER_ADDR >> ADDR_SR_SHFT;
|
|
PMAP_LOCK(pm);
|
|
vsid = va_to_vsid(pm, (vm_offset_t)addr);
|
|
PMAP_UNLOCK(pm);
|
|
|
|
slb1 = vsid << SLBV_VSID_SHIFT;
|
|
slb2 = (esid << SLBE_ESID_SHIFT) | SLBE_VALID | USER_SR;
|
|
|
|
__asm __volatile ("slbie %0; slbmte %1, %2" :: "r"(esid << 28),
|
|
"r"(slb1), "r"(slb2));
|
|
isync();
|
|
}
|
|
#else
|
|
static __inline void
|
|
set_user_sr(pmap_t pm, const void *addr)
|
|
{
|
|
register_t vsid;
|
|
|
|
vsid = va_to_vsid(pm, (vm_offset_t)addr);
|
|
|
|
isync();
|
|
__asm __volatile ("mtsr %0,%1" :: "n"(USER_SR), "r"(vsid));
|
|
isync();
|
|
}
|
|
#endif
|
|
|
|
int
|
|
copyout(const void *kaddr, void *udaddr, size_t len)
|
|
{
|
|
struct thread *td;
|
|
pmap_t pm;
|
|
faultbuf env;
|
|
const char *kp;
|
|
char *up, *p;
|
|
size_t l;
|
|
|
|
td = PCPU_GET(curthread);
|
|
pm = &td->td_proc->p_vmspace->vm_pmap;
|
|
|
|
if (setfault(env)) {
|
|
td->td_pcb->pcb_onfault = NULL;
|
|
return (EFAULT);
|
|
}
|
|
|
|
kp = kaddr;
|
|
up = udaddr;
|
|
|
|
while (len > 0) {
|
|
p = (char *)USER_ADDR + ((uintptr_t)up & ~SEGMENT_MASK);
|
|
|
|
l = ((char *)USER_ADDR + SEGMENT_LENGTH) - p;
|
|
if (l > len)
|
|
l = len;
|
|
|
|
set_user_sr(pm,up);
|
|
|
|
bcopy(kp, p, l);
|
|
|
|
up += l;
|
|
kp += l;
|
|
len -= l;
|
|
}
|
|
|
|
td->td_pcb->pcb_onfault = NULL;
|
|
return (0);
|
|
}
|
|
|
|
int
|
|
copyin(const void *udaddr, void *kaddr, size_t len)
|
|
{
|
|
struct thread *td;
|
|
pmap_t pm;
|
|
faultbuf env;
|
|
const char *up;
|
|
char *kp, *p;
|
|
size_t l;
|
|
|
|
td = PCPU_GET(curthread);
|
|
pm = &td->td_proc->p_vmspace->vm_pmap;
|
|
|
|
if (setfault(env)) {
|
|
td->td_pcb->pcb_onfault = NULL;
|
|
return (EFAULT);
|
|
}
|
|
|
|
kp = kaddr;
|
|
up = udaddr;
|
|
|
|
while (len > 0) {
|
|
p = (char *)USER_ADDR + ((uintptr_t)up & ~SEGMENT_MASK);
|
|
|
|
l = ((char *)USER_ADDR + SEGMENT_LENGTH) - p;
|
|
if (l > len)
|
|
l = len;
|
|
|
|
set_user_sr(pm,up);
|
|
|
|
bcopy(p, kp, l);
|
|
|
|
up += l;
|
|
kp += l;
|
|
len -= l;
|
|
}
|
|
|
|
td->td_pcb->pcb_onfault = NULL;
|
|
return (0);
|
|
}
|
|
|
|
int
|
|
copyinstr(const void *udaddr, void *kaddr, size_t len, size_t *done)
|
|
{
|
|
struct thread *td;
|
|
pmap_t pm;
|
|
faultbuf env;
|
|
const char *up;
|
|
char *kp;
|
|
size_t l;
|
|
int rv, c;
|
|
|
|
td = PCPU_GET(curthread);
|
|
pm = &td->td_proc->p_vmspace->vm_pmap;
|
|
|
|
if (setfault(env)) {
|
|
td->td_pcb->pcb_onfault = NULL;
|
|
return (EFAULT);
|
|
}
|
|
|
|
kp = kaddr;
|
|
up = udaddr;
|
|
|
|
rv = ENAMETOOLONG;
|
|
|
|
for (l = 0; len-- > 0; l++) {
|
|
if ((c = fubyte(up++)) < 0) {
|
|
rv = EFAULT;
|
|
break;
|
|
}
|
|
|
|
if (!(*kp++ = c)) {
|
|
l++;
|
|
rv = 0;
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (done != NULL) {
|
|
*done = l;
|
|
}
|
|
|
|
td->td_pcb->pcb_onfault = NULL;
|
|
return (rv);
|
|
}
|
|
|
|
int
|
|
subyte(void *addr, int byte)
|
|
{
|
|
struct thread *td;
|
|
pmap_t pm;
|
|
faultbuf env;
|
|
char *p;
|
|
|
|
td = PCPU_GET(curthread);
|
|
pm = &td->td_proc->p_vmspace->vm_pmap;
|
|
p = (char *)(USER_ADDR + ((uintptr_t)addr & ~SEGMENT_MASK));
|
|
|
|
if (setfault(env)) {
|
|
td->td_pcb->pcb_onfault = NULL;
|
|
return (-1);
|
|
}
|
|
|
|
set_user_sr(pm,addr);
|
|
|
|
*p = (char)byte;
|
|
|
|
td->td_pcb->pcb_onfault = NULL;
|
|
return (0);
|
|
}
|
|
|
|
#ifdef __powerpc64__
|
|
int
|
|
suword32(void *addr, int word)
|
|
{
|
|
struct thread *td;
|
|
pmap_t pm;
|
|
faultbuf env;
|
|
int *p;
|
|
|
|
td = PCPU_GET(curthread);
|
|
pm = &td->td_proc->p_vmspace->vm_pmap;
|
|
p = (int *)(USER_ADDR + ((uintptr_t)addr & ~SEGMENT_MASK));
|
|
|
|
if (setfault(env)) {
|
|
td->td_pcb->pcb_onfault = NULL;
|
|
return (-1);
|
|
}
|
|
|
|
set_user_sr(pm,addr);
|
|
|
|
*p = word;
|
|
|
|
td->td_pcb->pcb_onfault = NULL;
|
|
return (0);
|
|
}
|
|
#endif
|
|
|
|
int
|
|
suword(void *addr, long word)
|
|
{
|
|
struct thread *td;
|
|
pmap_t pm;
|
|
faultbuf env;
|
|
long *p;
|
|
|
|
td = PCPU_GET(curthread);
|
|
pm = &td->td_proc->p_vmspace->vm_pmap;
|
|
p = (long *)(USER_ADDR + ((uintptr_t)addr & ~SEGMENT_MASK));
|
|
|
|
if (setfault(env)) {
|
|
td->td_pcb->pcb_onfault = NULL;
|
|
return (-1);
|
|
}
|
|
|
|
set_user_sr(pm,addr);
|
|
|
|
*p = word;
|
|
|
|
td->td_pcb->pcb_onfault = NULL;
|
|
return (0);
|
|
}
|
|
|
|
#ifdef __powerpc64__
|
|
int
|
|
suword64(void *addr, int64_t word)
|
|
{
|
|
return (suword(addr, (long)word));
|
|
}
|
|
#else
|
|
int
|
|
suword32(void *addr, int32_t word)
|
|
{
|
|
return (suword(addr, (long)word));
|
|
}
|
|
#endif
|
|
|
|
int
|
|
fubyte(const void *addr)
|
|
{
|
|
struct thread *td;
|
|
pmap_t pm;
|
|
faultbuf env;
|
|
u_char *p;
|
|
int val;
|
|
|
|
td = PCPU_GET(curthread);
|
|
pm = &td->td_proc->p_vmspace->vm_pmap;
|
|
p = (u_char *)(USER_ADDR + ((uintptr_t)addr & ~SEGMENT_MASK));
|
|
|
|
if (setfault(env)) {
|
|
td->td_pcb->pcb_onfault = NULL;
|
|
return (-1);
|
|
}
|
|
|
|
set_user_sr(pm,addr);
|
|
|
|
val = *p;
|
|
|
|
td->td_pcb->pcb_onfault = NULL;
|
|
return (val);
|
|
}
|
|
|
|
#ifdef __powerpc64__
|
|
int32_t
|
|
fuword32(const void *addr)
|
|
{
|
|
struct thread *td;
|
|
pmap_t pm;
|
|
faultbuf env;
|
|
int32_t *p, val;
|
|
|
|
td = PCPU_GET(curthread);
|
|
pm = &td->td_proc->p_vmspace->vm_pmap;
|
|
p = (int32_t *)(USER_ADDR + ((uintptr_t)addr & ~SEGMENT_MASK));
|
|
|
|
if (setfault(env)) {
|
|
td->td_pcb->pcb_onfault = NULL;
|
|
return (-1);
|
|
}
|
|
|
|
set_user_sr(pm,addr);
|
|
|
|
val = *p;
|
|
|
|
td->td_pcb->pcb_onfault = NULL;
|
|
return (val);
|
|
}
|
|
#endif
|
|
|
|
long
|
|
fuword(const void *addr)
|
|
{
|
|
struct thread *td;
|
|
pmap_t pm;
|
|
faultbuf env;
|
|
long *p, val;
|
|
|
|
td = PCPU_GET(curthread);
|
|
pm = &td->td_proc->p_vmspace->vm_pmap;
|
|
p = (long *)(USER_ADDR + ((uintptr_t)addr & ~SEGMENT_MASK));
|
|
|
|
if (setfault(env)) {
|
|
td->td_pcb->pcb_onfault = NULL;
|
|
return (-1);
|
|
}
|
|
|
|
set_user_sr(pm,addr);
|
|
|
|
val = *p;
|
|
|
|
td->td_pcb->pcb_onfault = NULL;
|
|
return (val);
|
|
}
|
|
|
|
#ifndef __powerpc64__
|
|
int32_t
|
|
fuword32(const void *addr)
|
|
{
|
|
return ((int32_t)fuword(addr));
|
|
}
|
|
#endif
|
|
|
|
uint32_t
|
|
casuword32(volatile uint32_t *addr, uint32_t old, uint32_t new)
|
|
{
|
|
struct thread *td;
|
|
pmap_t pm;
|
|
faultbuf env;
|
|
uint32_t *p, val;
|
|
|
|
td = PCPU_GET(curthread);
|
|
pm = &td->td_proc->p_vmspace->vm_pmap;
|
|
p = (uint32_t *)(USER_ADDR + ((uintptr_t)addr & ~SEGMENT_MASK));
|
|
|
|
set_user_sr(pm,(const void *)(vm_offset_t)addr);
|
|
|
|
if (setfault(env)) {
|
|
td->td_pcb->pcb_onfault = NULL;
|
|
return (-1);
|
|
}
|
|
|
|
__asm __volatile (
|
|
"1:\tlwarx %0, 0, %2\n\t" /* load old value */
|
|
"cmplw %3, %0\n\t" /* compare */
|
|
"bne 2f\n\t" /* exit if not equal */
|
|
"stwcx. %4, 0, %2\n\t" /* attempt to store */
|
|
"bne- 1b\n\t" /* spin if failed */
|
|
"b 3f\n\t" /* we've succeeded */
|
|
"2:\n\t"
|
|
"stwcx. %0, 0, %2\n\t" /* clear reservation (74xx) */
|
|
"3:\n\t"
|
|
: "=&r" (val), "=m" (*p)
|
|
: "r" (p), "r" (old), "r" (new), "m" (*p)
|
|
: "cc", "memory");
|
|
|
|
td->td_pcb->pcb_onfault = NULL;
|
|
|
|
return (val);
|
|
}
|
|
|
|
#ifndef __powerpc64__
|
|
u_long
|
|
casuword(volatile u_long *addr, u_long old, u_long new)
|
|
{
|
|
return (casuword32((volatile uint32_t *)addr, old, new));
|
|
}
|
|
#else
|
|
u_long
|
|
casuword(volatile u_long *addr, u_long old, u_long new)
|
|
{
|
|
struct thread *td;
|
|
pmap_t pm;
|
|
faultbuf env;
|
|
u_long *p, val;
|
|
|
|
td = PCPU_GET(curthread);
|
|
pm = &td->td_proc->p_vmspace->vm_pmap;
|
|
p = (u_long *)(USER_ADDR + ((uintptr_t)addr & ~SEGMENT_MASK));
|
|
|
|
set_user_sr(pm,(const void *)(vm_offset_t)addr);
|
|
|
|
if (setfault(env)) {
|
|
td->td_pcb->pcb_onfault = NULL;
|
|
return (-1);
|
|
}
|
|
|
|
__asm __volatile (
|
|
"1:\tldarx %0, 0, %2\n\t" /* load old value */
|
|
"cmpld %3, %0\n\t" /* compare */
|
|
"bne 2f\n\t" /* exit if not equal */
|
|
"stdcx. %4, 0, %2\n\t" /* attempt to store */
|
|
"bne- 1b\n\t" /* spin if failed */
|
|
"b 3f\n\t" /* we've succeeded */
|
|
"2:\n\t"
|
|
"stdcx. %0, 0, %2\n\t" /* clear reservation (74xx) */
|
|
"3:\n\t"
|
|
: "=&r" (val), "=m" (*p)
|
|
: "r" (p), "r" (old), "r" (new), "m" (*p)
|
|
: "cc", "memory");
|
|
|
|
td->td_pcb->pcb_onfault = NULL;
|
|
|
|
return (val);
|
|
}
|
|
#endif
|
|
|