mirror of
https://git.hardenedbsd.org/hardenedbsd/HardenedBSD.git
synced 2025-01-11 17:04:19 +01:00
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.
This commit is contained in:
Rodney W. Grimes
parent
f95a02507b
commit
21d54b076d
Notes:
svn2git
2020-12-20 02:59:44 +00:00
svn path=/head/; revision=1603
@ -40,7 +40,7 @@ static char sccsid[] = "@(#)kvm_hp300.c 8.1 (Berkeley) 6/4/93";
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#endif /* LIBC_SCCS and not lint */
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/*
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* Hp300 machine dependent routines for kvm. Hopefully, the forthcoming
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* i386 machine dependent routines for kvm. Hopefully, the forthcoming
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* vm code will one day obsolete this module.
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*/
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@ -60,227 +60,88 @@ static char sccsid[] = "@(#)kvm_hp300.c 8.1 (Berkeley) 6/4/93";
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#include "kvm_private.h"
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#if defined(hp300)
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#include <hp300/hp300/pte.h>
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#endif
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#if defined(luna68k)
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#include <luna68k/luna68k/pte.h>
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#endif
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#ifndef btop
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#define btop(x) (((unsigned)(x)) >> PGSHIFT) /* XXX */
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#define ptob(x) ((caddr_t)((x) << PGSHIFT)) /* XXX */
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#define btop(x) (i386_btop(x))
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#define ptob(x) (i386_ptob(x))
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#endif
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struct vmstate {
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u_long lowram;
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int mmutype;
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struct ste *Sysseg;
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struct pde **IdlePTD;
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struct pde *PTD;
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};
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#define KREAD(kd, addr, p)\
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(kvm_read(kd, addr, (char *)(p), sizeof(*(p))) != sizeof(*(p)))
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void
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_kvm_freevtop(kd)
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kvm_t *kd;
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{
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if (kd->vmst != 0)
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_kvm_freevtop(kvm_t *kd) {
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if (kd->vmst->PTD) {
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free(kd->vmst->PTD);
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}
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if (kd->vmst != 0) {
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free(kd->vmst);
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}
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}
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int
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_kvm_initvtop(kd)
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kvm_t *kd;
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{
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_kvm_initvtop(kvm_t *kd) {
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struct vmstate *vm;
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struct nlist nlist[4];
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struct nlist nlist[2];
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vm = (struct vmstate *)_kvm_malloc(kd, sizeof(*vm));
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if (vm == 0)
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if (vm == 0) {
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_kvm_err(kd, kd->program, "cannot allocate vm");
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return (-1);
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}
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kd->vmst = vm;
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nlist[0].n_name = "_lowram";
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nlist[1].n_name = "_mmutype";
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nlist[2].n_name = "_Sysseg";
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nlist[3].n_name = 0;
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nlist[0].n_name = "_IdlePTD";
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nlist[1].n_name = 0;
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if (kvm_nlist(kd, nlist) != 0) {
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_kvm_err(kd, kd->program, "bad namelist");
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return (-1);
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}
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vm->Sysseg = 0;
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if (KREAD(kd, (u_long)nlist[0].n_value, &vm->lowram)) {
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_kvm_err(kd, kd->program, "cannot read lowram");
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vm->IdlePTD = 0;
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if (KREAD(kd, (u_long)nlist[0].n_value, &vm->IdlePTD)) {
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_kvm_err(kd, kd->program, "cannot read IdlePTD");
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return (-1);
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}
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if (KREAD(kd, (u_long)nlist[1].n_value, &vm->mmutype)) {
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_kvm_err(kd, kd->program, "cannot read mmutype");
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return (-1);
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if ((vm->PTD = _kvm_malloc(kd, NBPG /*sizeof(struct pde)*/)) != 0) {
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_kvm_err(kd, kd->program, "cannot allocate vm->PTD");
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}
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if (KREAD(kd, (u_long)nlist[2].n_value, &vm->Sysseg)) {
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_kvm_err(kd, kd->program, "cannot read segment table");
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if (KREAD(kd, (u_long)nlist[1].n_value, &vm->PTD)) {
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_kvm_err(kd, kd->program, "cannot read PTD");
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return (-1);
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}
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return (0);
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}
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static int
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_kvm_vatop(kd, sta, va, pa)
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kvm_t *kd;
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struct ste *sta;
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u_long va;
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u_long *pa;
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{
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register struct vmstate *vm;
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register u_long lowram;
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register u_long addr;
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int p, ste, pte;
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int offset;
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_kvm_vatop(kvm_t *kd, u_long va, u_long *pa) {
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if (ISALIVE(kd)) {
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_kvm_err(kd, 0, "vatop called in live kernel!");
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return((off_t)0);
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}
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vm = kd->vmst;
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offset = va & PGOFSET;
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/*
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* If we are initializing (kernel segment table pointer not yet set)
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* then return pa == va to avoid infinite recursion.
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*/
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if (vm->Sysseg == 0) {
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*pa = va;
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return (NBPG - offset);
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}
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lowram = vm->lowram;
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if (vm->mmutype == -2) {
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struct ste *sta2;
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addr = (u_long)&sta[va >> SG4_SHIFT1];
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/*
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* Can't use KREAD to read kernel segment table entries.
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* Fortunately it is 1-to-1 mapped so we don't have to.
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*/
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if (sta == vm->Sysseg) {
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if (lseek(kd->pmfd, (off_t)addr, 0) == -1 ||
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read(kd->pmfd, (char *)&ste, sizeof(ste)) < 0)
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goto invalid;
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} else if (KREAD(kd, addr, &ste))
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goto invalid;
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if ((ste & SG_V) == 0) {
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_kvm_err(kd, 0, "invalid level 1 descriptor (%x)",
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ste);
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return((off_t)0);
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}
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sta2 = (struct ste *)(ste & SG4_ADDR1);
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addr = (u_long)&sta2[(va & SG4_MASK2) >> SG4_SHIFT2];
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/*
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* Address from level 1 STE is a physical address,
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* so don't use kvm_read.
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*/
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if (lseek(kd->pmfd, (off_t)(addr - lowram), 0) == -1 ||
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read(kd->pmfd, (char *)&ste, sizeof(ste)) < 0)
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goto invalid;
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if ((ste & SG_V) == 0) {
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_kvm_err(kd, 0, "invalid level 2 descriptor (%x)",
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ste);
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return((off_t)0);
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}
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sta2 = (struct ste *)(ste & SG4_ADDR2);
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addr = (u_long)&sta2[(va & SG4_MASK3) >> SG4_SHIFT3];
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} else {
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addr = (u_long)&sta[va >> SEGSHIFT];
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/*
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* Can't use KREAD to read kernel segment table entries.
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* Fortunately it is 1-to-1 mapped so we don't have to.
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*/
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if (sta == vm->Sysseg) {
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if (lseek(kd->pmfd, (off_t)addr, 0) == -1 ||
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read(kd->pmfd, (char *)&ste, sizeof(ste)) < 0)
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goto invalid;
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} else if (KREAD(kd, addr, &ste))
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goto invalid;
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if ((ste & SG_V) == 0) {
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_kvm_err(kd, 0, "invalid segment (%x)", ste);
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return((off_t)0);
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}
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p = btop(va & SG_PMASK);
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addr = (ste & SG_FRAME) + (p * sizeof(struct pte));
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}
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/*
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* Address from STE is a physical address so don't use kvm_read.
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*/
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if (lseek(kd->pmfd, (off_t)(addr - lowram), 0) == -1 ||
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read(kd->pmfd, (char *)&pte, sizeof(pte)) < 0)
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goto invalid;
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addr = pte & PG_FRAME;
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if (pte == PG_NV) {
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_kvm_err(kd, 0, "page not valid");
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return (0);
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}
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*pa = addr - lowram + offset;
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return (NBPG - offset);
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invalid:
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_kvm_err(kd, 0, "invalid address (%x)", va);
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return (0);
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return ((off_t)0);
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}
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int
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_kvm_kvatop(kd, va, pa)
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kvm_t *kd;
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u_long va;
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u_long *pa;
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{
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return (_kvm_vatop(kd, (u_long)kd->vmst->Sysseg, va, pa));
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_kvm_kvatop(kvm_t *kd, u_long va, u_long *pa) {
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return (_kvm_vatop(kd, va, pa));
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}
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/*
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* Translate a user virtual address to a physical address.
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*/
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int
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_kvm_uvatop(kd, p, va, pa)
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kvm_t *kd;
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const struct proc *p;
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u_long va;
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u_long *pa;
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{
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register struct vmspace *vms = p->p_vmspace;
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int kva;
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/*
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* If this is a live kernel we just look it up in the kernel
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* virtually allocated flat 4mb page table (i.e. let the kernel
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* do the table walk). In this way, we avoid needing to know
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* the MMU type.
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*/
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_kvm_uvatop(kvm_t *kd, const struct proc *p, u_long va, u_long *pa) {
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if (ISALIVE(kd)) {
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struct pte *ptab;
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int pte, offset;
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kva = (int)&vms->vm_pmap.pm_ptab;
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if (KREAD(kd, kva, &ptab)) {
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_kvm_err(kd, 0, "invalid address (%x)", va);
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return (0);
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}
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kva = (int)&ptab[btop(va)];
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if (KREAD(kd, kva, &pte) || (pte & PG_V) == 0) {
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_kvm_err(kd, 0, "invalid address (%x)", va);
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return (0);
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}
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offset = va & PGOFSET;
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*pa = (pte & PG_FRAME) | offset;
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return (NBPG - offset);
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/* Not done yet */
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} else {
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/* Not done yet */
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}
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/*
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* Otherwise, we just walk the table ourself.
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*/
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kva = (int)&vms->vm_pmap.pm_stab;
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if (KREAD(kd, kva, &kva)) {
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_kvm_err(kd, 0, "invalid address (%x)", va);
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return (0);
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}
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return (_kvm_vatop(kd, kva, va, pa));
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return ((off_t)(0));
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}
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@ -40,7 +40,7 @@ static char sccsid[] = "@(#)kvm_hp300.c 8.1 (Berkeley) 6/4/93";
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#endif /* LIBC_SCCS and not lint */
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/*
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* Hp300 machine dependent routines for kvm. Hopefully, the forthcoming
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* i386 machine dependent routines for kvm. Hopefully, the forthcoming
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* vm code will one day obsolete this module.
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*/
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@ -60,227 +60,88 @@ static char sccsid[] = "@(#)kvm_hp300.c 8.1 (Berkeley) 6/4/93";
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#include "kvm_private.h"
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#if defined(hp300)
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#include <hp300/hp300/pte.h>
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#endif
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#if defined(luna68k)
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#include <luna68k/luna68k/pte.h>
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#endif
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#ifndef btop
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#define btop(x) (((unsigned)(x)) >> PGSHIFT) /* XXX */
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#define ptob(x) ((caddr_t)((x) << PGSHIFT)) /* XXX */
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#define btop(x) (i386_btop(x))
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#define ptob(x) (i386_ptob(x))
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#endif
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struct vmstate {
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u_long lowram;
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int mmutype;
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struct ste *Sysseg;
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struct pde **IdlePTD;
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struct pde *PTD;
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};
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#define KREAD(kd, addr, p)\
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(kvm_read(kd, addr, (char *)(p), sizeof(*(p))) != sizeof(*(p)))
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void
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_kvm_freevtop(kd)
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kvm_t *kd;
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{
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if (kd->vmst != 0)
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_kvm_freevtop(kvm_t *kd) {
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if (kd->vmst->PTD) {
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free(kd->vmst->PTD);
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}
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if (kd->vmst != 0) {
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free(kd->vmst);
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}
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}
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int
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_kvm_initvtop(kd)
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kvm_t *kd;
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{
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_kvm_initvtop(kvm_t *kd) {
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struct vmstate *vm;
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struct nlist nlist[4];
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struct nlist nlist[2];
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vm = (struct vmstate *)_kvm_malloc(kd, sizeof(*vm));
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if (vm == 0)
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if (vm == 0) {
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_kvm_err(kd, kd->program, "cannot allocate vm");
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return (-1);
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}
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kd->vmst = vm;
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nlist[0].n_name = "_lowram";
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nlist[1].n_name = "_mmutype";
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nlist[2].n_name = "_Sysseg";
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nlist[3].n_name = 0;
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nlist[0].n_name = "_IdlePTD";
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nlist[1].n_name = 0;
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if (kvm_nlist(kd, nlist) != 0) {
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_kvm_err(kd, kd->program, "bad namelist");
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return (-1);
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}
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vm->Sysseg = 0;
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if (KREAD(kd, (u_long)nlist[0].n_value, &vm->lowram)) {
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_kvm_err(kd, kd->program, "cannot read lowram");
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vm->IdlePTD = 0;
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if (KREAD(kd, (u_long)nlist[0].n_value, &vm->IdlePTD)) {
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_kvm_err(kd, kd->program, "cannot read IdlePTD");
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return (-1);
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}
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if (KREAD(kd, (u_long)nlist[1].n_value, &vm->mmutype)) {
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_kvm_err(kd, kd->program, "cannot read mmutype");
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return (-1);
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if ((vm->PTD = _kvm_malloc(kd, NBPG /*sizeof(struct pde)*/)) != 0) {
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_kvm_err(kd, kd->program, "cannot allocate vm->PTD");
|
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}
|
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if (KREAD(kd, (u_long)nlist[2].n_value, &vm->Sysseg)) {
|
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_kvm_err(kd, kd->program, "cannot read segment table");
|
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if (KREAD(kd, (u_long)nlist[1].n_value, &vm->PTD)) {
|
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_kvm_err(kd, kd->program, "cannot read PTD");
|
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return (-1);
|
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}
|
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return (0);
|
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}
|
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|
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static int
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_kvm_vatop(kd, sta, va, pa)
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kvm_t *kd;
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struct ste *sta;
|
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u_long va;
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u_long *pa;
|
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{
|
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register struct vmstate *vm;
|
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register u_long lowram;
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register u_long addr;
|
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int p, ste, pte;
|
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int offset;
|
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_kvm_vatop(kvm_t *kd, u_long va, u_long *pa) {
|
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|
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if (ISALIVE(kd)) {
|
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_kvm_err(kd, 0, "vatop called in live kernel!");
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return((off_t)0);
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}
|
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vm = kd->vmst;
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offset = va & PGOFSET;
|
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/*
|
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* If we are initializing (kernel segment table pointer not yet set)
|
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* then return pa == va to avoid infinite recursion.
|
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*/
|
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if (vm->Sysseg == 0) {
|
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*pa = va;
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return (NBPG - offset);
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}
|
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lowram = vm->lowram;
|
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if (vm->mmutype == -2) {
|
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struct ste *sta2;
|
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|
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addr = (u_long)&sta[va >> SG4_SHIFT1];
|
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/*
|
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* Can't use KREAD to read kernel segment table entries.
|
||||
* Fortunately it is 1-to-1 mapped so we don't have to.
|
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*/
|
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if (sta == vm->Sysseg) {
|
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if (lseek(kd->pmfd, (off_t)addr, 0) == -1 ||
|
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read(kd->pmfd, (char *)&ste, sizeof(ste)) < 0)
|
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goto invalid;
|
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} else if (KREAD(kd, addr, &ste))
|
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goto invalid;
|
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if ((ste & SG_V) == 0) {
|
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_kvm_err(kd, 0, "invalid level 1 descriptor (%x)",
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ste);
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return((off_t)0);
|
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}
|
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sta2 = (struct ste *)(ste & SG4_ADDR1);
|
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addr = (u_long)&sta2[(va & SG4_MASK2) >> SG4_SHIFT2];
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/*
|
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* Address from level 1 STE is a physical address,
|
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* so don't use kvm_read.
|
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*/
|
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if (lseek(kd->pmfd, (off_t)(addr - lowram), 0) == -1 ||
|
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read(kd->pmfd, (char *)&ste, sizeof(ste)) < 0)
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goto invalid;
|
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if ((ste & SG_V) == 0) {
|
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_kvm_err(kd, 0, "invalid level 2 descriptor (%x)",
|
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ste);
|
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return((off_t)0);
|
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}
|
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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);
|
||||
/* Not done yet */
|
||||
} else {
|
||||
/* Not done yet */
|
||||
}
|
||||
/*
|
||||
* 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);
|
||||
}
|
||||
return (_kvm_vatop(kd, kva, va, pa));
|
||||
return ((off_t)(0));
|
||||
}
|
||||
|
||||
@ -76,6 +76,11 @@ kvm_readswap(kd, p, va, cnt)
|
||||
u_long va;
|
||||
u_long *cnt;
|
||||
{
|
||||
#ifdef __FreeBSD__
|
||||
/* XXX Stubbed out, our vm system is differnet */
|
||||
_kvm_err(kd, kd->program, "kvm_readswap not implemented");
|
||||
return(0);
|
||||
#else
|
||||
register int ix;
|
||||
register u_long addr, head;
|
||||
register u_long offset, pagestart, sbstart, pgoff;
|
||||
@ -166,6 +171,7 @@ kvm_readswap(kd, p, va, cnt)
|
||||
offset %= NBPG;
|
||||
*cnt = NBPG - offset;
|
||||
return (&page[offset]);
|
||||
#endif /* __FreeBSD__ */
|
||||
}
|
||||
|
||||
#define KREAD(kd, addr, obj) \
|
||||
|
||||
Loading…
Reference in New Issue
Block a user