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35 * from: FreeBSD: src/lib/libkvm/kvm_i386.c,v 1.15 2001/10/10 17:48:43
38 #include <sys/cdefs.h>
39 __FBSDID("$FreeBSD$");
41 #if defined(LIBC_SCCS) && !defined(lint)
43 static char sccsid[] = "@(#)kvm_hp300.c 8.1 (Berkeley) 6/4/93";
45 #endif /* LIBC_SCCS and not lint */
48 * sparc64 machine dependent routines for kvm.
51 #include <sys/param.h>
58 #include "../../sys/sparc64/include/kerneldump.h"
60 #include "kvm_private.h"
61 #include "kvm_sparc64.h"
67 struct sparc64_dump_reg *vm_regions;
71 _sparc64_probe(kvm_t *kd)
74 return (_kvm_probe_elf_kernel(kd, ELFCLASS64, EM_SPARCV9));
78 _sparc64_freevtop(kvm_t *kd)
81 free(kd->vmst->vm_regions);
87 _sparc64_read_phys(kvm_t *kd, off_t pos, void *buf, size_t size)
90 /* XXX This has to be a raw file read, kvm_read is virtual. */
91 if (pread(kd->pmfd, buf, size, pos) != (ssize_t)size) {
92 _kvm_syserr(kd, kd->program, "_sparc64_read_phys: pread");
99 _sparc64_reg_cmp(const void *a, const void *b)
101 const struct sparc64_dump_reg *ra, *rb;
105 if (ra->dr_pa < rb->dr_pa)
107 else if (ra->dr_pa >= rb->dr_pa + rb->dr_size)
113 #define KVM_OFF_NOTFOUND 0
116 _sparc64_find_off(struct vmstate *vm, uint64_t pa, uint64_t size)
118 struct sparc64_dump_reg *reg, key;
122 reg = bsearch(&key, vm->vm_regions, vm->vm_nregions,
123 sizeof(*vm->vm_regions), _sparc64_reg_cmp);
125 return (KVM_OFF_NOTFOUND);
127 if (o + size > reg->dr_size)
128 return (KVM_OFF_NOTFOUND);
129 return (reg->dr_offs + o);
133 _sparc64_initvtop(kvm_t *kd)
135 struct sparc64_dump_hdr hdr;
136 struct sparc64_dump_reg *regs;
141 vm = (struct vmstate *)_kvm_malloc(kd, sizeof(*vm));
143 _kvm_err(kd, kd->program, "cannot allocate vm");
148 if (!_sparc64_read_phys(kd, 0, &hdr, sizeof(hdr)))
150 hdr.dh_hdr_size = be64toh(hdr.dh_hdr_size);
151 hdr.dh_tsb_pa = be64toh(hdr.dh_tsb_pa);
152 hdr.dh_tsb_size = be64toh(hdr.dh_tsb_size);
153 hdr.dh_tsb_mask = be64toh(hdr.dh_tsb_mask);
154 hdr.dh_nregions = be32toh(hdr.dh_nregions);
156 regsz = hdr.dh_nregions * sizeof(*regs);
157 regs = _kvm_malloc(kd, regsz);
159 _kvm_err(kd, kd->program, "cannot allocate regions");
162 if (!_sparc64_read_phys(kd, sizeof(hdr), regs, regsz))
164 for (i = 0; i < hdr.dh_nregions; i++) {
165 regs[i].dr_pa = be64toh(regs[i].dr_pa);
166 regs[i].dr_size = be64toh(regs[i].dr_size);
167 regs[i].dr_offs = be64toh(regs[i].dr_offs);
169 qsort(regs, hdr.dh_nregions, sizeof(*regs), _sparc64_reg_cmp);
171 vm->vm_tsb_mask = hdr.dh_tsb_mask;
172 vm->vm_regions = regs;
173 vm->vm_nregions = hdr.dh_nregions;
174 vm->vm_tsb_off = _sparc64_find_off(vm, hdr.dh_tsb_pa, hdr.dh_tsb_size);
175 if (vm->vm_tsb_off == KVM_OFF_NOTFOUND) {
176 _kvm_err(kd, kd->program, "tsb not found in dump");
189 _sparc64_kvatop(kvm_t *kd, kvaddr_t va, off_t *pa)
191 struct sparc64_tte tte;
198 pg_off = va & SPARC64_PAGE_MASK;
199 if (va >= SPARC64_MIN_DIRECT_ADDRESS)
200 pa_off = SPARC64_DIRECT_TO_PHYS(va) & ~SPARC64_PAGE_MASK;
202 vpn = va >> SPARC64_PAGE_SHIFT;
203 tte_off = kd->vmst->vm_tsb_off +
204 ((vpn & kd->vmst->vm_tsb_mask) << SPARC64_TTE_SHIFT);
205 if (!_sparc64_read_phys(kd, tte_off, &tte, sizeof(tte)))
207 tte.tte_vpn = be64toh(tte.tte_vpn);
208 tte.tte_data = be64toh(tte.tte_data);
209 if (!sparc64_tte_match(&tte, va))
211 pa_off = SPARC64_TTE_GET_PA(&tte);
213 rest = SPARC64_PAGE_SIZE - pg_off;
214 pa_off = _sparc64_find_off(kd->vmst, pa_off, rest);
215 if (pa_off == KVM_OFF_NOTFOUND)
217 *pa = pa_off + pg_off;
221 _kvm_err(kd, 0, "invalid address (%jx)", (uintmax_t)va);
226 _sparc64_native(kvm_t *kd __unused)
236 static struct kvm_arch kvm_sparc64 = {
237 .ka_probe = _sparc64_probe,
238 .ka_initvtop = _sparc64_initvtop,
239 .ka_freevtop = _sparc64_freevtop,
240 .ka_kvatop = _sparc64_kvatop,
241 .ka_native = _sparc64_native,
244 KVM_ARCH(kvm_sparc64);