133 lines
3.9 KiB
C
133 lines
3.9 KiB
C
|
|
#define _SYSTEM 1
|
|
|
|
#include <minix/callnr.h>
|
|
#include <minix/com.h>
|
|
#include <minix/config.h>
|
|
#include <minix/const.h>
|
|
#include <minix/ds.h>
|
|
#include <minix/endpoint.h>
|
|
#include <minix/keymap.h>
|
|
#include <minix/minlib.h>
|
|
#include <minix/type.h>
|
|
#include <minix/ipc.h>
|
|
#include <minix/sysutil.h>
|
|
#include <minix/syslib.h>
|
|
#include <minix/bitmap.h>
|
|
|
|
#include <sys/mman.h>
|
|
|
|
#include <errno.h>
|
|
#include <assert.h>
|
|
#include <env.h>
|
|
|
|
#include "proto.h"
|
|
#include "vm.h"
|
|
#include "util.h"
|
|
|
|
#include "memory.h"
|
|
|
|
/*===========================================================================*
|
|
* arch_map2vir *
|
|
*===========================================================================*/
|
|
PUBLIC vir_bytes arch_map2vir(struct vmproc *vmp, vir_bytes addr)
|
|
{
|
|
vir_bytes textstart = CLICK2ABS(vmp->vm_arch.vm_seg[T].mem_phys);
|
|
vir_bytes datastart = CLICK2ABS(vmp->vm_arch.vm_seg[D].mem_phys);
|
|
|
|
/* Could be a text address. */
|
|
assert(datastart <= addr || textstart <= addr);
|
|
|
|
return addr - datastart;
|
|
}
|
|
|
|
/*===========================================================================*
|
|
* arch_map2str *
|
|
*===========================================================================*/
|
|
PUBLIC char *arch_map2str(struct vmproc *vmp, vir_bytes addr)
|
|
{
|
|
static char bufstr[100];
|
|
vir_bytes textstart = CLICK2ABS(vmp->vm_arch.vm_seg[T].mem_phys);
|
|
vir_bytes textend = textstart + CLICK2ABS(vmp->vm_arch.vm_seg[T].mem_len);
|
|
vir_bytes datastart = CLICK2ABS(vmp->vm_arch.vm_seg[D].mem_phys);
|
|
|
|
if(addr < textstart) {
|
|
sprintf(bufstr, "<lin:0x%lx>", addr);
|
|
} else if(addr < datastart) {
|
|
sprintf(bufstr, "0x%lx (codeseg)", addr - textstart);
|
|
} else {
|
|
sprintf(bufstr, "0x%lx (dataseg)", addr - datastart);
|
|
}
|
|
|
|
return bufstr;
|
|
}
|
|
|
|
/*===========================================================================*
|
|
* arch_map2info *
|
|
*===========================================================================*/
|
|
PUBLIC vir_bytes arch_map2info(struct vmproc *vmp, vir_bytes addr, int *seg,
|
|
int *prot)
|
|
{
|
|
vir_bytes textstart = CLICK2ABS(vmp->vm_arch.vm_seg[T].mem_phys);
|
|
vir_bytes textend = textstart +
|
|
CLICK2ABS(vmp->vm_arch.vm_seg[T].mem_len);
|
|
vir_bytes datastart = CLICK2ABS(vmp->vm_arch.vm_seg[D].mem_phys);
|
|
|
|
/* The protection to be returned here is that of the segment. */
|
|
if(addr < textstart) {
|
|
*seg = D;
|
|
*prot = PROT_READ | PROT_WRITE | PROT_EXEC;
|
|
return addr;
|
|
} else if(addr < datastart) {
|
|
*seg = T;
|
|
*prot = PROT_READ | PROT_EXEC;
|
|
return addr - textstart;
|
|
} else {
|
|
*seg = D;
|
|
if (textstart == textend) /* common I&D? */
|
|
*prot = PROT_READ | PROT_WRITE | PROT_EXEC;
|
|
else
|
|
*prot = PROT_READ | PROT_WRITE;
|
|
return addr - datastart;
|
|
}
|
|
}
|
|
|
|
/*===========================================================================*
|
|
* arch_addrok *
|
|
*===========================================================================*/
|
|
PUBLIC vir_bytes arch_addrok(struct vmproc *vmp, vir_bytes addr)
|
|
{
|
|
vir_bytes textstart = CLICK2ABS(vmp->vm_arch.vm_seg[T].mem_phys);
|
|
vir_bytes textend = CLICK2ABS(vmp->vm_arch.vm_seg[T].mem_phys +
|
|
vmp->vm_arch.vm_seg[T].mem_phys);
|
|
vir_bytes datastart = CLICK2ABS(vmp->vm_arch.vm_seg[D].mem_phys);
|
|
|
|
if(addr >= textstart && addr < textstart+textend)
|
|
return 1;
|
|
|
|
if(addr >= datastart && addr < VM_DATATOP)
|
|
return 1;
|
|
|
|
return 0;
|
|
}
|
|
|
|
/*===========================================================================*
|
|
* arch_vir2map *
|
|
*===========================================================================*/
|
|
PUBLIC vir_bytes arch_vir2map(struct vmproc *vmp, vir_bytes addr)
|
|
{
|
|
vir_bytes bottom = CLICK2ABS(vmp->vm_arch.vm_seg[D].mem_phys);
|
|
|
|
return addr + bottom;
|
|
}
|
|
|
|
/*===========================================================================*
|
|
* arch_vir2map_text *
|
|
*===========================================================================*/
|
|
PUBLIC vir_bytes arch_vir2map_text(struct vmproc *vmp, vir_bytes addr)
|
|
{
|
|
vir_bytes bottom = CLICK2ABS(vmp->vm_arch.vm_seg[T].mem_phys);
|
|
|
|
return addr + bottom;
|
|
}
|