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