lib/libkvm/kvm_i386.c

93 _kvm_maphdrs(kvm_t *kd, size_t sz)
95 	struct vmstate *vm = kd->vmst;
104 	vm->mmapbase = mmap(NULL, sz, PROT_READ, MAP_PRIVATE, kd->pmfd, 0);
106 		_kvm_err(kd, kd->program, "cannot mmap corefile");
117 _kvm_pa2off(kvm_t *kd, uint64_t pa, off_t *ofs)
119 	Elf_Ehdr *e = kd->vmst->mmapbase;
123 	if (kd->rawdump) {
139 _kvm_freevtop(kvm_t *kd)
141 	struct vmstate *vm = kd->vmst;
143 	if (kd->vmst->minidump)
144 		return (_kvm_minidump_freevtop(kd));
150 	kd->vmst = NULL;
154 _kvm_initvtop(kvm_t *kd)
165 	if (!kd->rawdump && pread(kd->pmfd, &minihdr, 8, 0) == 8)
167 			return (_kvm_minidump_initvtop(kd));
169 	kd->vmst = (struct vmstate *)_kvm_malloc(kd, sizeof(*kd->vmst));
170 	if (kd->vmst == 0) {
171 		_kvm_err(kd, kd->program, "cannot allocate vm");
174 	kd->vmst->PTD = 0;
176 	if (kd->rawdump == 0) {
177 		if (_kvm_maphdrs(kd, sizeof(Elf_Ehdr)) == -1)
180 		ehdr = kd->vmst->mmapbase;
182 		if (_kvm_maphdrs(kd, hdrsz) == -1)
189 	if (kvm_nlist(kd, nl) != 0)
197 	if (kvm_nlist(kd, nl) == 0) {
200 		if (kvm_read(kd, (nl[0].n_value - kernbase), &pa,
202 			_kvm_err(kd, kd->program, "cannot read IdlePDPT");
205 		PTD = _kvm_malloc(kd, 4 * PAGE_SIZE);
207 			if (kvm_read(kd, pa + (i * sizeof(pa64)), &pa64,
209 				_kvm_err(kd, kd->program, "Cannot read PDPT");
213 			if (kvm_read(kd, pa64 & PG_FRAME_PAE,
215 				_kvm_err(kd, kd->program, "cannot read PDPT");
220 		kd->vmst->PTD = PTD;
221 		kd->vmst->pae = 1;
226 		if (kvm_nlist(kd, nl) != 0) {
227 			_kvm_err(kd, kd->program, "bad namelist");
230 		if (kvm_read(kd, (nl[0].n_value - kernbase), &pa,
232 			_kvm_err(kd, kd->program, "cannot read IdlePTD");
235 		PTD = _kvm_malloc(kd, PAGE_SIZE);
236 		if (kvm_read(kd, pa, PTD, PAGE_SIZE) != PAGE_SIZE) {
237 			_kvm_err(kd, kd->program, "cannot read PTD");
240 		kd->vmst->PTD = PTD;
241 		kd->vmst->pae = 0;
247 _kvm_vatop(kvm_t *kd, u_long va, off_t *pa)
262 	vm = kd->vmst;
271 		s = _kvm_pa2off(kd, va, pa);
273 			_kvm_err(kd, kd->program,
283 		_kvm_err(kd, kd->program, "_kvm_vatop: pde not valid");
296 		s = _kvm_pa2off(kd, pde_pa, &ofs);
298 			_kvm_err(kd, kd->program,
309 	s = _kvm_pa2off(kd, pte_pa, &ofs);
311 		_kvm_err(kd, kd->program, "_kvm_vatop: pdpe_pa not found");
316 	if (lseek(kd->pmfd, ofs, 0) == -1) {
317 		_kvm_syserr(kd, kd->program, "_kvm_vatop: lseek");
320 	if (read(kd->pmfd, &pte, sizeof pte) != sizeof pte) {
321 		_kvm_syserr(kd, kd->program, "_kvm_vatop: read");
325 		_kvm_err(kd, kd->program, "_kvm_kvatop: pte not valid");
330 	s =_kvm_pa2off(kd, a, pa);
332 		_kvm_err(kd, kd->program, "_kvm_vatop: address not in dump");
338 	_kvm_err(kd, 0, "invalid address (0x%lx)", va);
343 _kvm_vatop_pae(kvm_t *kd, u_long va, off_t *pa)
358 	vm = kd->vmst;
367 		s = _kvm_pa2off(kd, va, pa);
369 			_kvm_err(kd, kd->program,
379 		_kvm_err(kd, kd->program, "_kvm_kvatop_pae: pde not valid");
392 		s = _kvm_pa2off(kd, pde_pa, &ofs);
394 			_kvm_err(kd, kd->program,
405 	s = _kvm_pa2off(kd, pte_pa, &ofs);
407 		_kvm_err(kd, kd->program, "_kvm_vatop_pae: pdpe_pa not found");
412 	if (lseek(kd->pmfd, ofs, 0) == -1) {
413 		_kvm_syserr(kd, kd->program, "_kvm_vatop_pae: lseek");
416 	if (read(kd->pmfd, &pte, sizeof pte) != sizeof pte) {
417 		_kvm_syserr(kd, kd->program, "_kvm_vatop_pae: read");
421 		_kvm_err(kd, kd->program, "_kvm_vatop_pae: pte not valid");
426 	s =_kvm_pa2off(kd, a, pa);
428 		_kvm_err(kd, kd->program,
435 	_kvm_err(kd, 0, "invalid address (0x%lx)", va);
440 _kvm_kvatop(kvm_t *kd, u_long va, off_t *pa)
443 	if (kd->vmst->minidump)
444 		return (_kvm_minidump_kvatop(kd, va, pa));
445 	if (ISALIVE(kd)) {
446 		_kvm_err(kd, 0, "vatop called in live kernel!");
449 	if (kd->vmst->pae)
450 		return (_kvm_vatop_pae(kd, va, pa));
452 		return (_kvm_vatop(kd, va, pa));