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Diffstat (limited to 'lib/libkvm/kvm_sparc.c')
-rw-r--r--lib/libkvm/kvm_sparc.c362
1 files changed, 113 insertions, 249 deletions
diff --git a/lib/libkvm/kvm_sparc.c b/lib/libkvm/kvm_sparc.c
index 7dc5ffa37d2..92ed157a9b3 100644
--- a/lib/libkvm/kvm_sparc.c
+++ b/lib/libkvm/kvm_sparc.c
@@ -1,4 +1,4 @@
-/* $OpenBSD: kvm_sparc.c,v 1.3 1997/02/26 16:46:34 niklas Exp $ */
+/* $OpenBSD: kvm_sparc.c,v 1.4 1997/06/11 10:32:16 grr Exp $ */
/* $NetBSD: kvm_sparc.c,v 1.9 1996/04/01 19:23:03 cgd Exp $ */
/*-
@@ -42,7 +42,7 @@
#if 0
static char sccsid[] = "@(#)kvm_sparc.c 8.1 (Berkeley) 6/4/93";
#else
-static char *rcsid = "$OpenBSD: kvm_sparc.c,v 1.3 1997/02/26 16:46:34 niklas Exp $";
+static char *rcsid = "$OpenBSD: kvm_sparc.c,v 1.4 1997/06/11 10:32:16 grr Exp $";
#endif
#endif /* LIBC_SCCS and not lint */
@@ -55,8 +55,8 @@ static char *rcsid = "$OpenBSD: kvm_sparc.c,v 1.3 1997/02/26 16:46:34 niklas Exp
#include <sys/user.h>
#include <sys/proc.h>
#include <sys/stat.h>
-#include <sys/sysctl.h>
-#include <sys/device.h>
+#include <sys/core.h>
+#include <sys/kcore.h>
#include <unistd.h>
#include <nlist.h>
#include <kvm.h>
@@ -64,100 +64,62 @@ static char *rcsid = "$OpenBSD: kvm_sparc.c,v 1.3 1997/02/26 16:46:34 niklas Exp
#include <vm/vm.h>
#include <vm/vm_param.h>
#include <machine/autoconf.h>
+#include <machine/kcore.h>
#include <limits.h>
#include <db.h>
#include "kvm_private.h"
-#define MA_SIZE 32 /* XXX */
-struct vmstate {
- struct {
- int x_seginval; /* [sun4/sun4c] only */
- int x_npmemarr;
- struct memarr x_pmemarr[MA_SIZE];
- struct segmap x_segmap_store[NKREG*NSEGRG];
- } x;
-#define seginval x.x_seginval
-#define npmemarr x.x_npmemarr
-#define pmemarr x.x_pmemarr
-#define segmap_store x.x_segmap_store
- int *pte; /* [sun4/sun4c] only */
-};
-#define NPMEG(vm) ((vm)->seginval+1)
static int cputyp = -1;
-
-static int pgshift, nptesg;
+static int pgshift;
+static int nptesg; /* [sun4/sun4c] only */
#define VA_VPG(va) ((cputyp == CPU_SUN4C || cputyp == CPU_SUN4M) \
? VA_SUN4C_VPG(va) \
: VA_SUN4_VPG(va))
-static int _kvm_mustinit __P((kvm_t *));
-
-#if 0
-static int
-getcputyp()
-{
- int mib[2];
- size_t size;
+#define VA_OFF(va) (va & (kd->nbpg - 1))
- mib[0] = CTL_HW;
- mib[1] = HW_CLASS;
- size = sizeof cputyp;
- if (sysctl(mib, 2, &cputyp, &size, NULL, 0) == -1)
- return (-1);
-}
-#endif
-static int
-_kvm_mustinit(kd)
+void
+_kvm_freevtop(kd)
kvm_t *kd;
{
-static struct nlist nlist[2] = {
-# define X_CPUTYP 0
- { "_cputyp" },
- { NULL },
- };
- off_t foff;
-
- if (cputyp != -1)
- return 0;
-
- for (pgshift = 12; (1 << pgshift) != kd->nbpg; pgshift++)
- ;
- nptesg = NBPSG / kd->nbpg;
-
- if (kvm_nlist(kd, nlist) != 0) {
- _kvm_err(kd, kd->program, "cannot find `cputyp' symbol");
- return (-1);
- }
- /* Assume kernel mappings are all within first memory bank. */
- foff = nlist[X_CPUTYP].n_value - KERNBASE;
- if (lseek(kd->pmfd, foff, 0) == -1 ||
- read(kd->pmfd, &cputyp, sizeof(cputyp)) < 0) {
- _kvm_err(kd, kd->program, "cannot read `cputyp");
- return (-1);
+ if (kd->vmst != 0) {
+ _kvm_err(kd, kd->program, "_kvm_freevtop: internal error");
+ kd->vmst = 0;
}
- if (cputyp != CPU_SUN4 &&
- cputyp != CPU_SUN4C &&
- cputyp != CPU_SUN4M)
- return (-1);
-
- return (0);
}
-void
-_kvm_freevtop(kd)
+/*
+ * Prepare for translation of kernel virtual addresses into offsets
+ * into crash dump files. We use the MMU specific goop written at the
+ * front of the crash dump by pmap_dumpmmu().
+ */
+int
+_kvm_initvtop(kd)
kvm_t *kd;
{
- if (kd->vmst != 0) {
- if (kd->vmst->pte != 0)
- free(kd->vmst->pte);
- free(kd->vmst);
- kd->vmst = 0;
+ cpu_kcore_hdr_t *cpup = kd->cpu_data;
+
+ switch (cputyp = cpup->cputype) {
+ case CPU_SUN4:
+ kd->nbpg = 8196;
+ pgshift = 13;
+ break;
+ case CPU_SUN4C:
+ case CPU_SUN4M:
+ kd->nbpg = 4096;
+ pgshift = 12;
+ break;
+ default:
+ _kvm_err(kd, kd->program, "Unsupported CPU type");
+ return (-1);
}
+ nptesg = NBPSG / kd->nbpg;
+ return (0);
}
/*
@@ -172,7 +134,8 @@ _kvm_kvatop(kd, va, pa)
u_long va;
u_long *pa;
{
- if (_kvm_mustinit(kd) != 0)
+ if (cputyp == -1)
+ if (_kvm_initvtop(kd) != 0)
return (-1);
return ((cputyp == CPU_SUN4M)
@@ -181,185 +144,50 @@ _kvm_kvatop(kd, va, pa)
}
/*
- * Prepare for translation of kernel virtual addresses into offsets
- * into crash dump files. We use the MMU specific goop written at the
- * and of crash dump by pmap_dumpmmu().
- * (note: sun4/sun4c 2-level MMU specific)
- */
-int
-_kvm_initvtop(kd)
- kvm_t *kd;
-{
- if (_kvm_mustinit(kd) != 0)
- return (-1);
-
- return ((cputyp == CPU_SUN4M)
- ? _kvm_initvtop4m(kd)
- : _kvm_initvtop44c(kd));
-}
-
-#define VA_OFF(va) (va & (kd->nbpg - 1))
-
-
-/*
- * We use the MMU specific goop written at the end of crash dump
- * by pmap_dumpmmu().
* (note: sun4 3-level MMU not yet supported)
*/
int
-_kvm_initvtop44c(kd)
- kvm_t *kd;
-{
- register struct vmstate *vm;
- register int i;
- off_t foff;
- struct stat st;
-
- if ((vm = kd->vmst) == 0) {
- kd->vmst = vm = (struct vmstate *)_kvm_malloc(kd, sizeof(*vm));
- if (vm == 0)
- return (-1);
- }
-
- if (fstat(kd->pmfd, &st) < 0)
- return (-1);
- /*
- * Read segment table.
- */
-
- foff = st.st_size - roundup(sizeof(vm->x), kd->nbpg);
- errno = 0;
- if (lseek(kd->pmfd, (off_t)foff, 0) == -1 && errno != 0 ||
- read(kd->pmfd, (char *)&vm->x, sizeof(vm->x)) < 0) {
- _kvm_err(kd, kd->program, "cannot read segment map");
- return (-1);
- }
-
- vm->pte = (int *)_kvm_malloc(kd, NPMEG(vm) * nptesg * sizeof(int));
- if (vm->pte == 0) {
- free(kd->vmst);
- kd->vmst = 0;
- return (-1);
- }
-
- /*
- * Read PMEGs.
- */
- foff = st.st_size - roundup(sizeof(vm->x), kd->nbpg) -
- roundup(NPMEG(vm) * nptesg * sizeof(int), kd->nbpg);
-
- errno = 0;
- if (lseek(kd->pmfd, foff, 0) == -1 && errno != 0 ||
- read(kd->pmfd, (char *)vm->pte, NPMEG(vm) * nptesg * sizeof(int)) < 0) {
- _kvm_err(kd, kd->program, "cannot read PMEG table");
- return (-1);
- }
-
- return (0);
-}
-
-int
_kvm_kvatop44c(kd, va, pa)
kvm_t *kd;
u_long va;
u_long *pa;
{
- register int vr, vs, pte, off, nmem;
- register struct vmstate *vm = kd->vmst;
+ register int vr, vs, pte;
+ cpu_kcore_hdr_t *cpup = kd->cpu_data;
struct regmap *rp;
struct segmap *sp;
- struct memarr *mp;
+ int *ptes;
if (va < KERNBASE)
goto err;
+ /*
+ * Layout of CPU segment:
+ * cpu_kcore_hdr_t;
+ * [alignment]
+ * phys_ram_seg_t[cpup->nmemseg];
+ * ptes[cpup->npmegs];
+ */
+ ptes = (int *)((int)kd->cpu_data + cpup->pmegoffset);
+
vr = VA_VREG(va);
vs = VA_VSEG(va);
- sp = &vm->segmap_store[(vr-NUREG)*NSEGRG + vs];
+ sp = &cpup->segmap_store[(vr-NUREG)*NSEGRG + vs];
if (sp->sg_npte == 0)
goto err;
- if (sp->sg_pmeg == vm->seginval)
+ if (sp->sg_pmeg == cpup->npmeg - 1) /* =seginval */
goto err;
- pte = vm->pte[sp->sg_pmeg * nptesg + VA_VPG(va)];
+ pte = ptes[sp->sg_pmeg * nptesg + VA_VPG(va)];
if ((pte & PG_V) != 0) {
- register long p, dumpoff = 0;
+ register long p, off = VA_OFF(va);
- off = VA_OFF(va);
p = (pte & PG_PFNUM) << pgshift;
- /* Translate (sparse) pfnum to (packed) dump offset */
- for (mp = vm->pmemarr, nmem = vm->npmemarr; --nmem >= 0; mp++) {
- if (mp->addr <= p && p < mp->addr + mp->len)
- break;
- dumpoff += mp->len;
- }
- if (nmem < 0)
- goto err;
- *pa = (dumpoff + p - mp->addr) | off;
+ *pa = p + off;
return (kd->nbpg - off);
}
err:
- _kvm_err(kd, 0, "invalid address (%lx)", va);
- return (0);
-}
-
-/*
- * Prepare for translation of kernel virtual addresses into offsets
- * into crash dump files. Since the sun4m pagetables are all in memory,
- * we use nlist to bootstrap the translation tables. This assumes that
- * the kernel mappings all reside in the first physical memory bank.
- */
-int
-_kvm_initvtop4m(kd)
- kvm_t *kd;
-{
- register int i;
- register off_t foff;
- register struct vmstate *vm;
- struct stat st;
-static struct nlist nlist[4] = {
-# define X_KSEGSTORE 0
- { "_kernel_segmap_store" },
-# define X_PMEMARR 1
- { "_pmemarr" },
-# define X_NPMEMARR 2
- { "_npmemarr" },
- { NULL },
- };
-
- if ((vm = kd->vmst) == 0) {
- kd->vmst = vm = (struct vmstate *)_kvm_malloc(kd, sizeof(*vm));
- if (vm == 0)
- return (-1);
- }
-
- if (kvm_nlist(kd, nlist) != 0) {
- _kvm_err(kd, kd->program, "cannot read symbols");
- return (-1);
- }
-
- /* Assume kernel mappings are all within first memory bank. */
- foff = nlist[X_KSEGSTORE].n_value - KERNBASE;
- if (lseek(kd->pmfd, foff, 0) == -1 ||
- read(kd->pmfd, vm->segmap_store, sizeof(vm->segmap_store)) < 0) {
- _kvm_err(kd, kd->program, "cannot read segment map");
- return (-1);
- }
-
- foff = nlist[X_PMEMARR].n_value - KERNBASE;
- if (lseek(kd->pmfd, foff, 0) == -1 ||
- read(kd->pmfd, vm->pmemarr, sizeof(vm->pmemarr)) < 0) {
- _kvm_err(kd, kd->program, "cannot read pmemarr");
- return (-1);
- }
-
- foff = nlist[X_NPMEMARR].n_value - KERNBASE;
- if (lseek(kd->pmfd, foff, 0) == -1 ||
- read(kd->pmfd, &vm->npmemarr, sizeof(vm->npmemarr)) < 0) {
- _kvm_err(kd, kd->program, "cannot read npmemarr");
- return (-1);
- }
-
+ _kvm_err(kd, 0, "invalid address (%x)", va);
return (0);
}
@@ -369,49 +197,85 @@ _kvm_kvatop4m(kd, va, pa)
u_long va;
u_long *pa;
{
- register struct vmstate *vm = kd->vmst;
- register int vr, vs, nmem, off;
+ cpu_kcore_hdr_t *cpup = kd->cpu_data;
+ register int vr, vs;
int pte;
off_t foff;
struct regmap *rp;
struct segmap *sp;
- struct memarr *mp;
if (va < KERNBASE)
goto err;
+ /*
+ * Layout of CPU segment:
+ * cpu_kcore_hdr_t;
+ * [alignment]
+ * phys_ram_seg_t[cpup->nmemseg];
+ */
+
vr = VA_VREG(va);
vs = VA_VSEG(va);
- sp = &vm->segmap_store[(vr-NUREG)*NSEGRG + vs];
+ sp = &cpup->segmap_store[(vr-NUREG)*NSEGRG + vs];
if (sp->sg_npte == 0)
goto err;
- /* Assume kernel mappings are all within first memory bank. */
- foff = (long)&sp->sg_pte[VA_VPG(va)] - KERNBASE;
+ /* XXX - assume page tables in initial kernel DATA or BSS. */
+ foff = _kvm_pa2off(kd, (u_long)&sp->sg_pte[VA_VPG(va)] - KERNBASE);
+ if (foff == (off_t)-1)
+ return (0);
+
if (lseek(kd->pmfd, foff, 0) == -1 ||
read(kd->pmfd, (void *)&pte, sizeof(pte)) < 0) {
- _kvm_err(kd, kd->program, "cannot read pte");
- goto err;
+ _kvm_err(kd, kd->program, "cannot read pte for %x", va);
+ return (0);
}
if ((pte & SRMMU_TETYPE) == SRMMU_TEPTE) {
- register long p, dumpoff = 0;
+ register long p, off = VA_OFF(va);
- off = VA_OFF(va);
p = (pte & SRMMU_PPNMASK) << SRMMU_PPNPASHIFT;
- /* Translate (sparse) pfnum to (packed) dump offset */
- for (mp = vm->pmemarr, nmem = vm->npmemarr; --nmem >= 0; mp++) {
- if (mp->addr <= p && p < mp->addr + mp->len)
- break;
- dumpoff += mp->len;
- }
- if (nmem < 0)
- goto err;
- *pa = (dumpoff + p - mp->addr) | off;
+ *pa = p + off;
return (kd->nbpg - off);
}
err:
- _kvm_err(kd, 0, "invalid address (%lx)", va);
+ _kvm_err(kd, 0, "invalid address (%x)", va);
return (0);
}
+
+/*
+ * Translate a physical address to a file-offset in the crash-dump.
+ */
+off_t
+_kvm_pa2off(kd, pa)
+ kvm_t *kd;
+ u_long pa;
+{
+ cpu_kcore_hdr_t *cpup = kd->cpu_data;
+ phys_ram_seg_t *mp;
+ off_t off;
+ int nmem;
+
+ /*
+ * Layout of CPU segment:
+ * cpu_kcore_hdr_t;
+ * [alignment]
+ * phys_ram_seg_t[cpup->nmemseg];
+ */
+ mp = (phys_ram_seg_t *)((int)kd->cpu_data + cpup->memsegoffset);
+ off = 0;
+
+ /* Translate (sparse) pfnum to (packed) dump offset */
+ for (nmem = cpup->nmemseg; --nmem >= 0; mp++) {
+ if (mp->start <= pa && pa < mp->start + mp->size)
+ break;
+ off += mp->size;
+ }
+ if (nmem < 0) {
+ _kvm_err(kd, 0, "invalid address (%x)", pa);
+ return (-1);
+ }
+
+ return (kd->dump_off + off + pa - mp->start);
+}
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