mirror of
https://github.com/freebsd/freebsd-src.git
synced 2024-12-02 04:13:39 +00:00
88 lines
2.6 KiB
C
88 lines
2.6 KiB
C
/***************************************************
|
|
* file: userconfig/uc_kmem.c
|
|
*
|
|
* Copyright (c) 1996 Eric L. Hernes (erich@rrnet.com)
|
|
* 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. The name of the author may not be used to endorse or promote products
|
|
* derived from this software withough specific prior written permission
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 THE AUTHOR 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.
|
|
*
|
|
* $Id$
|
|
*/
|
|
|
|
#include <sys/types.h>
|
|
#include <stdlib.h>
|
|
#include <unistd.h>
|
|
#include <a.out.h>
|
|
|
|
#include <stdio.h>
|
|
|
|
#include "uc_main.h"
|
|
|
|
/* translate a kv pointer to user space */
|
|
/* malloc()-ing if we aren't mmaped */
|
|
u_int
|
|
kv_to_u(struct kernel *kp, u_int adr, u_int size){
|
|
u_int tadr;
|
|
if(!kp->incore){
|
|
struct exec *ep;
|
|
ep=(struct exec *)kp->core;
|
|
tadr=(u_int)((adr - ep->a_entry + (N_DATOFF(*ep) - ep->a_text))+kp->core);
|
|
} else {
|
|
caddr_t ptr;
|
|
ptr = malloc(size);
|
|
lseek(kp->fd, adr, SEEK_SET);
|
|
read(kp->fd, ptr, size);
|
|
tadr=(u_int)ptr;
|
|
}
|
|
return(tadr);
|
|
}
|
|
|
|
/* dereference a pointer to kernel space */
|
|
u_int
|
|
kv_dref_p(struct kernel *kp, u_int adr){
|
|
u_int tadr;
|
|
if(!kp->incore){
|
|
struct exec *ep;
|
|
ep=(struct exec *)kp->core;
|
|
tadr=*(u_int*)((adr - ep->a_entry + (N_DATOFF(*ep) - ep->a_text))+kp->core);
|
|
} else {
|
|
lseek(kp->fd, adr, SEEK_SET);
|
|
read(kp->fd, &tadr, sizeof(tadr));
|
|
}
|
|
return(tadr);
|
|
}
|
|
|
|
/* deref a pointer to kernel text */
|
|
u_int
|
|
kv_dref_t(struct kernel *kp, u_int adr){
|
|
u_int tadr;
|
|
if(!kp->incore){
|
|
struct exec *ep;
|
|
ep=(struct exec *)kp->core;
|
|
tadr=*(u_int*)((adr - ep->a_entry) + N_TXTOFF(*ep) + (u_int)kp->core);
|
|
} else {
|
|
lseek(kp->fd, adr, SEEK_SET);
|
|
read(kp->fd, &tadr, sizeof(tadr));
|
|
}
|
|
return(tadr);
|
|
}
|
|
|
|
/* end of userconfig/uc_kmem.c */
|