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33 * from: FreeBSD: src/lib/libkvm/kvm_i386.c,v 1.15 2001/10/10 17:48:43
36 #include <sys/cdefs.h>
37 __FBSDID("$FreeBSD$");
39 #if defined(LIBC_SCCS) && !defined(lint)
41 static char sccsid[] = "@(#)kvm_hp300.c 8.1 (Berkeley) 6/4/93";
43 #endif /* LIBC_SCCS and not lint */
46 * sparc64 machine dependent routines for kvm.
49 #include <sys/param.h>
56 #include "../../sys/sparc64/include/kerneldump.h"
58 #include "kvm_private.h"
59 #include "kvm_sparc64.h"
65 struct sparc64_dump_reg *vm_regions;
69 _sparc64_probe(kvm_t *kd)
72 return (_kvm_probe_elf_kernel(kd, ELFCLASS64, EM_SPARCV9));
76 _sparc64_freevtop(kvm_t *kd)
79 free(kd->vmst->vm_regions);
85 _sparc64_read_phys(kvm_t *kd, off_t pos, void *buf, size_t size)
88 /* XXX This has to be a raw file read, kvm_read is virtual. */
89 if (pread(kd->pmfd, buf, size, pos) != (ssize_t)size) {
90 _kvm_syserr(kd, kd->program, "_sparc64_read_phys: pread");
97 _sparc64_reg_cmp(const void *a, const void *b)
99 const struct sparc64_dump_reg *ra, *rb;
103 if (ra->dr_pa < rb->dr_pa)
105 else if (ra->dr_pa >= rb->dr_pa + rb->dr_size)
111 #define KVM_OFF_NOTFOUND 0
114 _sparc64_find_off(struct vmstate *vm, uint64_t pa, uint64_t size)
116 struct sparc64_dump_reg *reg, key;
120 reg = bsearch(&key, vm->vm_regions, vm->vm_nregions,
121 sizeof(*vm->vm_regions), _sparc64_reg_cmp);
123 return (KVM_OFF_NOTFOUND);
125 if (o + size > reg->dr_size)
126 return (KVM_OFF_NOTFOUND);
127 return (reg->dr_offs + o);
131 _sparc64_initvtop(kvm_t *kd)
133 struct sparc64_dump_hdr hdr;
134 struct sparc64_dump_reg *regs;
139 vm = (struct vmstate *)_kvm_malloc(kd, sizeof(*vm));
141 _kvm_err(kd, kd->program, "cannot allocate vm");
146 if (!_sparc64_read_phys(kd, 0, &hdr, sizeof(hdr)))
148 hdr.dh_hdr_size = be64toh(hdr.dh_hdr_size);
149 hdr.dh_tsb_pa = be64toh(hdr.dh_tsb_pa);
150 hdr.dh_tsb_size = be64toh(hdr.dh_tsb_size);
151 hdr.dh_tsb_mask = be64toh(hdr.dh_tsb_mask);
152 hdr.dh_nregions = be32toh(hdr.dh_nregions);
154 regsz = hdr.dh_nregions * sizeof(*regs);
155 regs = _kvm_malloc(kd, regsz);
157 _kvm_err(kd, kd->program, "cannot allocate regions");
160 if (!_sparc64_read_phys(kd, sizeof(hdr), regs, regsz))
162 for (i = 0; i < hdr.dh_nregions; i++) {
163 regs[i].dr_pa = be64toh(regs[i].dr_pa);
164 regs[i].dr_size = be64toh(regs[i].dr_size);
165 regs[i].dr_offs = be64toh(regs[i].dr_offs);
167 qsort(regs, hdr.dh_nregions, sizeof(*regs), _sparc64_reg_cmp);
169 vm->vm_tsb_mask = hdr.dh_tsb_mask;
170 vm->vm_regions = regs;
171 vm->vm_nregions = hdr.dh_nregions;
172 vm->vm_tsb_off = _sparc64_find_off(vm, hdr.dh_tsb_pa, hdr.dh_tsb_size);
173 if (vm->vm_tsb_off == KVM_OFF_NOTFOUND) {
174 _kvm_err(kd, kd->program, "tsb not found in dump");
187 _sparc64_kvatop(kvm_t *kd, kvaddr_t va, off_t *pa)
189 struct sparc64_tte tte;
196 pg_off = va & SPARC64_PAGE_MASK;
197 if (va >= SPARC64_MIN_DIRECT_ADDRESS)
198 pa_off = SPARC64_DIRECT_TO_PHYS(va) & ~SPARC64_PAGE_MASK;
200 vpn = va >> SPARC64_PAGE_SHIFT;
201 tte_off = kd->vmst->vm_tsb_off +
202 ((vpn & kd->vmst->vm_tsb_mask) << SPARC64_TTE_SHIFT);
203 if (!_sparc64_read_phys(kd, tte_off, &tte, sizeof(tte)))
205 tte.tte_vpn = be64toh(tte.tte_vpn);
206 tte.tte_data = be64toh(tte.tte_data);
207 if (!sparc64_tte_match(&tte, va))
209 pa_off = SPARC64_TTE_GET_PA(&tte);
211 rest = SPARC64_PAGE_SIZE - pg_off;
212 pa_off = _sparc64_find_off(kd->vmst, pa_off, rest);
213 if (pa_off == KVM_OFF_NOTFOUND)
215 *pa = pa_off + pg_off;
219 _kvm_err(kd, 0, "invalid address (%jx)", (uintmax_t)va);
224 _sparc64_native(kvm_t *kd __unused)
234 static struct kvm_arch kvm_sparc64 = {
235 .ka_probe = _sparc64_probe,
236 .ka_initvtop = _sparc64_initvtop,
237 .ka_freevtop = _sparc64_freevtop,
238 .ka_kvatop = _sparc64_kvatop,
239 .ka_native = _sparc64_native,
242 KVM_ARCH(kvm_sparc64);