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Differential D3341 Diff 7906 lib/libkvm/kvm_sparc64.c

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lib/libkvm/kvm_sparc64.c

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#endif #endif
#endif /* LIBC_SCCS and not lint */ #endif /* LIBC_SCCS and not lint */
/* /*
* sparc64 machine dependent routines for kvm. * sparc64 machine dependent routines for kvm.
*/ */
#include <sys/param.h> #include <sys/param.h>
#include <sys/user.h> #include <kvm.h>
#include <sys/proc.h> #include <limits.h>
#include <sys/stat.h> #include <stdint.h>
#include <stdlib.h> #include <stdlib.h>
#include <unistd.h> #include <unistd.h>
#include <nlist.h>
#include <kvm.h>
#include <vm/vm.h> #include "../../sys/sparc64/include/kerneldump.h"
#include <vm/vm_param.h>
#include <machine/kerneldump.h>
#include <machine/tte.h>
#include <machine/tlb.h>
#include <machine/tsb.h>
#include <limits.h>
#include "kvm_private.h" #include "kvm_private.h"
#include "kvm_sparc64.h"
#ifndef btop
#define btop(x) (sparc64_btop(x))
#define ptob(x) (sparc64_ptob(x))
#endif
struct vmstate { struct vmstate {
off_t vm_tsb_off; off_t vm_tsb_off;
vm_size_t vm_tsb_mask; uint64_t vm_tsb_mask;
int vm_nregions; int vm_nregions;
struct sparc64_dump_reg *vm_regions; struct sparc64_dump_reg *vm_regions;
}; };
void static int
_kvm_freevtop(kvm_t *kd) _sparc64_probe(kvm_t *kd)
{ {
if (kd->vmst != 0) {
return (_kvm_probe_elf_kernel(kd, ELFCLASS64, EM_SPARCV9));
}
static void
_sparc64_freevtop(kvm_t *kd)
{
free(kd->vmst->vm_regions); free(kd->vmst->vm_regions);
free(kd->vmst); free(kd->vmst);
kd->vmst = NULL;
} }
}
static int static int
_kvm_read_phys(kvm_t *kd, off_t pos, void *buf, size_t size) _sparc64_read_phys(kvm_t *kd, off_t pos, void *buf, size_t size)
{ {
/* XXX This has to be a raw file read, kvm_read is virtual. */ /* XXX This has to be a raw file read, kvm_read is virtual. */
if (lseek(kd->pmfd, pos, SEEK_SET) == -1) { if (pread(kd->pmfd, buf, size, pos) != (ssize_t)size) {
_kvm_syserr(kd, kd->program, "_kvm_read_phys: lseek"); _kvm_syserr(kd, kd->program, "_sparc64_read_phys: pread");
return (0); return (0);
} }
if (read(kd->pmfd, buf, size) != (ssize_t)size) {
_kvm_syserr(kd, kd->program, "_kvm_read_phys: read");
return (0);
}
return (1); return (1);
} }
static int static int
_kvm_reg_cmp(const void *a, const void *b) _sparc64_reg_cmp(const void *a, const void *b)
{ {
const struct sparc64_dump_reg *ra, *rb; const struct sparc64_dump_reg *ra, *rb;
ra = a; ra = a;
rb = b; rb = b;
if (ra->dr_pa < rb->dr_pa) if (ra->dr_pa < rb->dr_pa)
return (-1); return (-1);
else if (ra->dr_pa >= rb->dr_pa + rb->dr_size) else if (ra->dr_pa >= rb->dr_pa + rb->dr_size)
return (1); return (1);
else else
return (0); return (0);
} }
#define KVM_OFF_NOTFOUND 0 #define KVM_OFF_NOTFOUND 0
static off_t static off_t
_kvm_find_off(struct vmstate *vm, vm_offset_t pa, vm_size_t size) _sparc64_find_off(struct vmstate *vm, uint64_t pa, uint64_t size)
{ {
struct sparc64_dump_reg *reg, key; struct sparc64_dump_reg *reg, key;
vm_offset_t o; vm_offset_t o;
key.dr_pa = pa; key.dr_pa = pa;
reg = bsearch(&key, vm->vm_regions, vm->vm_nregions, reg = bsearch(&key, vm->vm_regions, vm->vm_nregions,
sizeof(*vm->vm_regions), _kvm_reg_cmp); sizeof(*vm->vm_regions), _sparc64_reg_cmp);
if (reg == NULL) if (reg == NULL)
return (KVM_OFF_NOTFOUND); return (KVM_OFF_NOTFOUND);
o = pa - reg->dr_pa; o = pa - reg->dr_pa;
if (o + size > reg->dr_size) if (o + size > reg->dr_size)
return (KVM_OFF_NOTFOUND); return (KVM_OFF_NOTFOUND);
return (reg->dr_offs + o); return (reg->dr_offs + o);
} }
int static int
_kvm_initvtop(kvm_t *kd) _sparc64_initvtop(kvm_t *kd)
{ {
struct sparc64_dump_hdr hdr; struct sparc64_dump_hdr hdr;
struct sparc64_dump_reg *regs; struct sparc64_dump_reg *regs;
struct vmstate *vm; struct vmstate *vm;
size_t regsz; size_t regsz;
vm_offset_t pa; uint64_t pa;
int i;
vm = (struct vmstate *)_kvm_malloc(kd, sizeof(*vm)); vm = (struct vmstate *)_kvm_malloc(kd, sizeof(*vm));
if (vm == NULL) { if (vm == NULL) {
_kvm_err(kd, kd->program, "cannot allocate vm"); _kvm_err(kd, kd->program, "cannot allocate vm");
return (-1); return (-1);
} }
kd->vmst = vm; kd->vmst = vm;
if (!_kvm_read_phys(kd, 0, &hdr, sizeof(hdr))) if (!_sparc64_read_phys(kd, 0, &hdr, sizeof(hdr)))
goto fail_vm; goto fail_vm;
hdr.dh_hdr_size = be64toh(hdr.dh_hdr_size);
hdr.dh_tsb_pa = be64toh(hdr.dh_tsb_pa);
hdr.dh_tsb_size = be64toh(hdr.dh_tsb_size);
hdr.dh_tsb_mask = be64toh(hdr.dh_tsb_mask);
hdr.dh_nregions = be32toh(hdr.dh_nregions);
pa = hdr.dh_tsb_pa; pa = hdr.dh_tsb_pa;
regsz = hdr.dh_nregions * sizeof(*regs); regsz = hdr.dh_nregions * sizeof(*regs);
regs = _kvm_malloc(kd, regsz); regs = _kvm_malloc(kd, regsz);
if (regs == NULL) { if (regs == NULL) {
_kvm_err(kd, kd->program, "cannot allocate regions"); _kvm_err(kd, kd->program, "cannot allocate regions");
goto fail_vm; goto fail_vm;
} }
if (!_kvm_read_phys(kd, sizeof(hdr), regs, regsz)) if (!_sparc64_read_phys(kd, sizeof(hdr), regs, regsz))
goto fail_regs; goto fail_regs;
qsort(regs, hdr.dh_nregions, sizeof(*regs), _kvm_reg_cmp); for (i = 0; i < hdr.dh_nregions; i++) {
regs[i].dr_pa = be64toh(regs[i].dr_pa);
regs[i].dr_size = be64toh(regs[i].dr_size);
regs[i].dr_offs = be64toh(regs[i].dr_offs);
}
qsort(regs, hdr.dh_nregions, sizeof(*regs), _sparc64_reg_cmp);
vm->vm_tsb_mask = hdr.dh_tsb_mask; vm->vm_tsb_mask = hdr.dh_tsb_mask;
vm->vm_regions = regs; vm->vm_regions = regs;
vm->vm_nregions = hdr.dh_nregions; vm->vm_nregions = hdr.dh_nregions;
vm->vm_tsb_off = _kvm_find_off(vm, hdr.dh_tsb_pa, hdr.dh_tsb_size); vm->vm_tsb_off = _sparc64_find_off(vm, hdr.dh_tsb_pa, hdr.dh_tsb_size);
if (vm->vm_tsb_off == KVM_OFF_NOTFOUND) { if (vm->vm_tsb_off == KVM_OFF_NOTFOUND) {
_kvm_err(kd, kd->program, "tsb not found in dump"); _kvm_err(kd, kd->program, "tsb not found in dump");
goto fail_regs; goto fail_regs;
} }
return (0); return (0);
fail_regs: fail_regs:
free(regs); free(regs);
fail_vm: fail_vm:
free(vm); free(vm);
return (-1); return (-1);
} }
int static int
_kvm_kvatop(kvm_t *kd, u_long va, off_t *pa) _sparc64_kvatop(kvm_t *kd, kvaddr_t va, off_t *pa)
{ {
struct tte tte; struct sparc64_tte tte;
off_t tte_off; off_t tte_off;
u_long vpn; kvaddr_t vpn;
off_t pa_off; off_t pa_off;
u_long pg_off; kvaddr_t pg_off;
int rest; int rest;
pg_off = va & PAGE_MASK; pg_off = va & SPARC64_PAGE_MASK;
if (va >= VM_MIN_DIRECT_ADDRESS) if (va >= SPARC64_MIN_DIRECT_ADDRESS)
pa_off = TLB_DIRECT_TO_PHYS(va) & ~PAGE_MASK; pa_off = SPARC64_DIRECT_TO_PHYS(va) & ~SPARC64_PAGE_MASK;
else { else {
vpn = btop(va); vpn = va >> SPARC64_PAGE_SHIFT;
tte_off = kd->vmst->vm_tsb_off + tte_off = kd->vmst->vm_tsb_off +
((vpn & kd->vmst->vm_tsb_mask) << TTE_SHIFT); ((vpn & kd->vmst->vm_tsb_mask) << SPARC64_TTE_SHIFT);
if (!_kvm_read_phys(kd, tte_off, &tte, sizeof(tte))) if (!_sparc64_read_phys(kd, tte_off, &tte, sizeof(tte)))
goto invalid; goto invalid;
if (!tte_match(&tte, va)) tte.tte_vpn = be64toh(tte.tte_vpn);
tte.tte_data = be64toh(tte.tte_data);
if (!sparc64_tte_match(&tte, va))
goto invalid; goto invalid;
pa_off = TTE_GET_PA(&tte); pa_off = SPARC64_TTE_GET_PA(&tte);
} }
rest = PAGE_SIZE - pg_off; rest = SPARC64_PAGE_SIZE - pg_off;
pa_off = _kvm_find_off(kd->vmst, pa_off, rest); pa_off = _sparc64_find_off(kd->vmst, pa_off, rest);
if (pa_off == KVM_OFF_NOTFOUND) if (pa_off == KVM_OFF_NOTFOUND)
goto invalid; goto invalid;
*pa = pa_off + pg_off; *pa = pa_off + pg_off;
return (rest); return (rest);
invalid: invalid:
_kvm_err(kd, 0, "invalid address (%lx)", va); _kvm_err(kd, 0, "invalid address (%jx)", (uintmax_t)va);
return (0); return (0);
} }
static int
_sparc64_native(kvm_t *kd)
{
#ifdef __sparc64__
return (1);
#else
return (0);
#endif
}
struct kvm_arch kvm_sparc64 = {
.ka_probe = _sparc64_probe,
.ka_initvtop = _sparc64_initvtop,
.ka_freevtop = _sparc64_freevtop,
.ka_kvatop = _sparc64_kvatop,
.ka_native = _sparc64_native,
};
KVM_ARCH(kvm_sparc64);