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authorrgrimes <rgrimes@FreeBSD.org>1994-05-28 05:48:30 +0000
committerrgrimes <rgrimes@FreeBSD.org>1994-05-28 05:48:30 +0000
commit01c9385475340b457cf5d62cc3d51c4f77e5ff4a (patch)
tree3943a0abe5ee1d7228e85daeaac77995f9073116 /lib/libkvm/kvm_i386.c
parent0095655af3ad26e3ace815eb529c6afe6f2eabec (diff)
downloadFreeBSD-src-01c9385475340b457cf5d62cc3d51c4f77e5ff4a.zip
FreeBSD-src-01c9385475340b457cf5d62cc3d51c4f77e5ff4a.tar.gz
Fix kvm_i386.c just enough to make it compile and return lots of errors
when called. Noop out swapread in kvm_proc.c as our vm system is different.
Diffstat (limited to 'lib/libkvm/kvm_i386.c')
-rw-r--r--lib/libkvm/kvm_i386.c207
1 files changed, 34 insertions, 173 deletions
diff --git a/lib/libkvm/kvm_i386.c b/lib/libkvm/kvm_i386.c
index 2154a23..3dbc9ca 100644
--- a/lib/libkvm/kvm_i386.c
+++ b/lib/libkvm/kvm_i386.c
@@ -40,7 +40,7 @@ static char sccsid[] = "@(#)kvm_hp300.c 8.1 (Berkeley) 6/4/93";
#endif /* LIBC_SCCS and not lint */
/*
- * Hp300 machine dependent routines for kvm. Hopefully, the forthcoming
+ * i386 machine dependent routines for kvm. Hopefully, the forthcoming
* vm code will one day obsolete this module.
*/
@@ -60,227 +60,88 @@ static char sccsid[] = "@(#)kvm_hp300.c 8.1 (Berkeley) 6/4/93";
#include "kvm_private.h"
-#if defined(hp300)
-#include <hp300/hp300/pte.h>
-#endif
-
-#if defined(luna68k)
-#include <luna68k/luna68k/pte.h>
-#endif
-
#ifndef btop
-#define btop(x) (((unsigned)(x)) >> PGSHIFT) /* XXX */
-#define ptob(x) ((caddr_t)((x) << PGSHIFT)) /* XXX */
+#define btop(x) (i386_btop(x))
+#define ptob(x) (i386_ptob(x))
#endif
struct vmstate {
- u_long lowram;
- int mmutype;
- struct ste *Sysseg;
+ struct pde **IdlePTD;
+ struct pde *PTD;
};
#define KREAD(kd, addr, p)\
(kvm_read(kd, addr, (char *)(p), sizeof(*(p))) != sizeof(*(p)))
void
-_kvm_freevtop(kd)
- kvm_t *kd;
-{
- if (kd->vmst != 0)
+_kvm_freevtop(kvm_t *kd) {
+ if (kd->vmst->PTD) {
+ free(kd->vmst->PTD);
+ }
+ if (kd->vmst != 0) {
free(kd->vmst);
+ }
}
int
-_kvm_initvtop(kd)
- kvm_t *kd;
-{
+_kvm_initvtop(kvm_t *kd) {
struct vmstate *vm;
- struct nlist nlist[4];
+ struct nlist nlist[2];
vm = (struct vmstate *)_kvm_malloc(kd, sizeof(*vm));
- if (vm == 0)
+ if (vm == 0) {
+ _kvm_err(kd, kd->program, "cannot allocate vm");
return (-1);
+ }
kd->vmst = vm;
- nlist[0].n_name = "_lowram";
- nlist[1].n_name = "_mmutype";
- nlist[2].n_name = "_Sysseg";
- nlist[3].n_name = 0;
+ nlist[0].n_name = "_IdlePTD";
+ nlist[1].n_name = 0;
if (kvm_nlist(kd, nlist) != 0) {
_kvm_err(kd, kd->program, "bad namelist");
return (-1);
}
- vm->Sysseg = 0;
- if (KREAD(kd, (u_long)nlist[0].n_value, &vm->lowram)) {
- _kvm_err(kd, kd->program, "cannot read lowram");
+ vm->IdlePTD = 0;
+ if (KREAD(kd, (u_long)nlist[0].n_value, &vm->IdlePTD)) {
+ _kvm_err(kd, kd->program, "cannot read IdlePTD");
return (-1);
}
- if (KREAD(kd, (u_long)nlist[1].n_value, &vm->mmutype)) {
- _kvm_err(kd, kd->program, "cannot read mmutype");
- return (-1);
+ if ((vm->PTD = _kvm_malloc(kd, NBPG /*sizeof(struct pde)*/)) != 0) {
+ _kvm_err(kd, kd->program, "cannot allocate vm->PTD");
}
- if (KREAD(kd, (u_long)nlist[2].n_value, &vm->Sysseg)) {
- _kvm_err(kd, kd->program, "cannot read segment table");
+ if (KREAD(kd, (u_long)nlist[1].n_value, &vm->PTD)) {
+ _kvm_err(kd, kd->program, "cannot read PTD");
return (-1);
}
return (0);
}
static int
-_kvm_vatop(kd, sta, va, pa)
- kvm_t *kd;
- struct ste *sta;
- u_long va;
- u_long *pa;
-{
- register struct vmstate *vm;
- register u_long lowram;
- register u_long addr;
- int p, ste, pte;
- int offset;
+_kvm_vatop(kvm_t *kd, u_long va, u_long *pa) {
if (ISALIVE(kd)) {
_kvm_err(kd, 0, "vatop called in live kernel!");
return((off_t)0);
}
- vm = kd->vmst;
- offset = va & PGOFSET;
- /*
- * If we are initializing (kernel segment table pointer not yet set)
- * then return pa == va to avoid infinite recursion.
- */
- if (vm->Sysseg == 0) {
- *pa = va;
- return (NBPG - offset);
- }
- lowram = vm->lowram;
- if (vm->mmutype == -2) {
- struct ste *sta2;
-
- addr = (u_long)&sta[va >> SG4_SHIFT1];
- /*
- * Can't use KREAD to read kernel segment table entries.
- * Fortunately it is 1-to-1 mapped so we don't have to.
- */
- if (sta == vm->Sysseg) {
- if (lseek(kd->pmfd, (off_t)addr, 0) == -1 ||
- read(kd->pmfd, (char *)&ste, sizeof(ste)) < 0)
- goto invalid;
- } else if (KREAD(kd, addr, &ste))
- goto invalid;
- if ((ste & SG_V) == 0) {
- _kvm_err(kd, 0, "invalid level 1 descriptor (%x)",
- ste);
- return((off_t)0);
- }
- sta2 = (struct ste *)(ste & SG4_ADDR1);
- addr = (u_long)&sta2[(va & SG4_MASK2) >> SG4_SHIFT2];
- /*
- * Address from level 1 STE is a physical address,
- * so don't use kvm_read.
- */
- if (lseek(kd->pmfd, (off_t)(addr - lowram), 0) == -1 ||
- read(kd->pmfd, (char *)&ste, sizeof(ste)) < 0)
- goto invalid;
- if ((ste & SG_V) == 0) {
- _kvm_err(kd, 0, "invalid level 2 descriptor (%x)",
- ste);
- return((off_t)0);
- }
- sta2 = (struct ste *)(ste & SG4_ADDR2);
- addr = (u_long)&sta2[(va & SG4_MASK3) >> SG4_SHIFT3];
- } else {
- addr = (u_long)&sta[va >> SEGSHIFT];
- /*
- * Can't use KREAD to read kernel segment table entries.
- * Fortunately it is 1-to-1 mapped so we don't have to.
- */
- if (sta == vm->Sysseg) {
- if (lseek(kd->pmfd, (off_t)addr, 0) == -1 ||
- read(kd->pmfd, (char *)&ste, sizeof(ste)) < 0)
- goto invalid;
- } else if (KREAD(kd, addr, &ste))
- goto invalid;
- if ((ste & SG_V) == 0) {
- _kvm_err(kd, 0, "invalid segment (%x)", ste);
- return((off_t)0);
- }
- p = btop(va & SG_PMASK);
- addr = (ste & SG_FRAME) + (p * sizeof(struct pte));
- }
- /*
- * Address from STE is a physical address so don't use kvm_read.
- */
- if (lseek(kd->pmfd, (off_t)(addr - lowram), 0) == -1 ||
- read(kd->pmfd, (char *)&pte, sizeof(pte)) < 0)
- goto invalid;
- addr = pte & PG_FRAME;
- if (pte == PG_NV) {
- _kvm_err(kd, 0, "page not valid");
- return (0);
- }
- *pa = addr - lowram + offset;
-
- return (NBPG - offset);
-invalid:
_kvm_err(kd, 0, "invalid address (%x)", va);
- return (0);
+ return ((off_t)0);
}
int
-_kvm_kvatop(kd, va, pa)
- kvm_t *kd;
- u_long va;
- u_long *pa;
-{
- return (_kvm_vatop(kd, (u_long)kd->vmst->Sysseg, va, pa));
+_kvm_kvatop(kvm_t *kd, u_long va, u_long *pa) {
+ return (_kvm_vatop(kd, va, pa));
}
/*
* Translate a user virtual address to a physical address.
*/
int
-_kvm_uvatop(kd, p, va, pa)
- kvm_t *kd;
- const struct proc *p;
- u_long va;
- u_long *pa;
-{
- register struct vmspace *vms = p->p_vmspace;
- int kva;
-
- /*
- * If this is a live kernel we just look it up in the kernel
- * virtually allocated flat 4mb page table (i.e. let the kernel
- * do the table walk). In this way, we avoid needing to know
- * the MMU type.
- */
+_kvm_uvatop(kvm_t *kd, const struct proc *p, u_long va, u_long *pa) {
if (ISALIVE(kd)) {
- struct pte *ptab;
- int pte, offset;
-
- kva = (int)&vms->vm_pmap.pm_ptab;
- if (KREAD(kd, kva, &ptab)) {
- _kvm_err(kd, 0, "invalid address (%x)", va);
- return (0);
- }
- kva = (int)&ptab[btop(va)];
- if (KREAD(kd, kva, &pte) || (pte & PG_V) == 0) {
- _kvm_err(kd, 0, "invalid address (%x)", va);
- return (0);
- }
- offset = va & PGOFSET;
- *pa = (pte & PG_FRAME) | offset;
- return (NBPG - offset);
- }
- /*
- * Otherwise, we just walk the table ourself.
- */
- kva = (int)&vms->vm_pmap.pm_stab;
- if (KREAD(kd, kva, &kva)) {
- _kvm_err(kd, 0, "invalid address (%x)", va);
- return (0);
+ /* Not done yet */
+ } else {
+ /* Not done yet */
}
- return (_kvm_vatop(kd, kva, va, pa));
+ return ((off_t)(0));
}
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