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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("$FreeBSD$");
40 __SCCSID("@(#)kvm_hp300.c 8.1 (Berkeley) 6/4/93");
43 * sparc64 machine dependent routines for kvm.
46 #include <sys/param.h>
53 #include "../../sys/sparc64/include/kerneldump.h"
55 #include "kvm_private.h"
56 #include "kvm_sparc64.h"
62 struct sparc64_dump_reg *vm_regions;
66 _sparc64_probe(kvm_t *kd)
69 return (_kvm_probe_elf_kernel(kd, ELFCLASS64, EM_SPARCV9));
73 _sparc64_freevtop(kvm_t *kd)
76 free(kd->vmst->vm_regions);
82 _sparc64_read_phys(kvm_t *kd, off_t pos, void *buf, size_t size)
85 /* XXX This has to be a raw file read, kvm_read is virtual. */
86 if (pread(kd->pmfd, buf, size, pos) != (ssize_t)size) {
87 _kvm_syserr(kd, kd->program, "_sparc64_read_phys: pread");
94 _sparc64_reg_cmp(const void *a, const void *b)
96 const struct sparc64_dump_reg *ra, *rb;
100 if (ra->dr_pa < rb->dr_pa)
102 else if (ra->dr_pa >= rb->dr_pa + rb->dr_size)
108 #define KVM_OFF_NOTFOUND 0
111 _sparc64_find_off(struct vmstate *vm, uint64_t pa, uint64_t size)
113 struct sparc64_dump_reg *reg, key;
117 reg = bsearch(&key, vm->vm_regions, vm->vm_nregions,
118 sizeof(*vm->vm_regions), _sparc64_reg_cmp);
120 return (KVM_OFF_NOTFOUND);
122 if (o + size > reg->dr_size)
123 return (KVM_OFF_NOTFOUND);
124 return (reg->dr_offs + o);
128 _sparc64_initvtop(kvm_t *kd)
130 struct sparc64_dump_hdr hdr;
131 struct sparc64_dump_reg *regs;
136 vm = (struct vmstate *)_kvm_malloc(kd, sizeof(*vm));
138 _kvm_err(kd, kd->program, "cannot allocate vm");
143 if (!_sparc64_read_phys(kd, 0, &hdr, sizeof(hdr)))
145 hdr.dh_hdr_size = be64toh(hdr.dh_hdr_size);
146 hdr.dh_tsb_pa = be64toh(hdr.dh_tsb_pa);
147 hdr.dh_tsb_size = be64toh(hdr.dh_tsb_size);
148 hdr.dh_tsb_mask = be64toh(hdr.dh_tsb_mask);
149 hdr.dh_nregions = be32toh(hdr.dh_nregions);
151 regsz = hdr.dh_nregions * sizeof(*regs);
152 regs = _kvm_malloc(kd, regsz);
154 _kvm_err(kd, kd->program, "cannot allocate regions");
157 if (!_sparc64_read_phys(kd, sizeof(hdr), regs, regsz))
159 for (i = 0; i < hdr.dh_nregions; i++) {
160 regs[i].dr_pa = be64toh(regs[i].dr_pa);
161 regs[i].dr_size = be64toh(regs[i].dr_size);
162 regs[i].dr_offs = be64toh(regs[i].dr_offs);
164 qsort(regs, hdr.dh_nregions, sizeof(*regs), _sparc64_reg_cmp);
166 vm->vm_tsb_mask = hdr.dh_tsb_mask;
167 vm->vm_regions = regs;
168 vm->vm_nregions = hdr.dh_nregions;
169 vm->vm_tsb_off = _sparc64_find_off(vm, hdr.dh_tsb_pa, hdr.dh_tsb_size);
170 if (vm->vm_tsb_off == KVM_OFF_NOTFOUND) {
171 _kvm_err(kd, kd->program, "tsb not found in dump");
184 _sparc64_kvatop(kvm_t *kd, kvaddr_t va, off_t *pa)
186 struct sparc64_tte tte;
193 pg_off = va & SPARC64_PAGE_MASK;
194 if (va >= SPARC64_MIN_DIRECT_ADDRESS)
195 pa_off = SPARC64_DIRECT_TO_PHYS(va) & ~SPARC64_PAGE_MASK;
197 vpn = va >> SPARC64_PAGE_SHIFT;
198 tte_off = kd->vmst->vm_tsb_off +
199 ((vpn & kd->vmst->vm_tsb_mask) << SPARC64_TTE_SHIFT);
200 if (!_sparc64_read_phys(kd, tte_off, &tte, sizeof(tte)))
202 tte.tte_vpn = be64toh(tte.tte_vpn);
203 tte.tte_data = be64toh(tte.tte_data);
204 if (!sparc64_tte_match(&tte, va))
206 pa_off = SPARC64_TTE_GET_PA(&tte);
208 rest = SPARC64_PAGE_SIZE - pg_off;
209 pa_off = _sparc64_find_off(kd->vmst, pa_off, rest);
210 if (pa_off == KVM_OFF_NOTFOUND)
212 *pa = pa_off + pg_off;
216 _kvm_err(kd, 0, "invalid address (%jx)", (uintmax_t)va);
221 _sparc64_native(kvm_t *kd __unused)
231 static struct kvm_arch kvm_sparc64 = {
232 .ka_probe = _sparc64_probe,
233 .ka_initvtop = _sparc64_initvtop,
234 .ka_freevtop = _sparc64_freevtop,
235 .ka_kvatop = _sparc64_kvatop,
236 .ka_native = _sparc64_native,
239 KVM_ARCH(kvm_sparc64);