1 /*-
2  * SPDX-License-Identifier: BSD-3-Clause
15  * 3. Neither the name of the author nor the names of any co-contributors
45 	void		*map;  member
58 	if (eh->e_ident[EI_CLASS] != ELFCLASS32)  in valid_elf_header()
60 	if (eh->e_ident[EI_DATA] != ELFDATA2MSB)  in valid_elf_header()
62 	if (eh->e_ident[EI_VERSION] != EV_CURRENT)  in valid_elf_header()
64 	if (eh->e_ident[EI_OSABI] != ELFOSABI_STANDALONE)  in valid_elf_header()
66 	if (be16toh(eh->e_type) != ET_CORE)  in valid_elf_header()
68 	if (be16toh(eh->e_machine) != EM_PPC)  in valid_elf_header()
78 	if (strcmp(dh->magic, KERNELDUMPMAGIC) != 0)  in dump_header_size()
80 	if (strcmp(dh->architecture, "powerpc") != 0)  in dump_header_size()
87  * Map the ELF headers into the process' address space. We do this in two
94 	struct vmstate *vm;  in powerpc_maphdrs()  local
97 	vm = kd->vmst;  in powerpc_maphdrs()
99 	vm->mapsz = sizeof(*vm->eh) + sizeof(struct kerneldumpheader);  in powerpc_maphdrs()
100 	vm->map = mmap(NULL, vm->mapsz, PROT_READ, MAP_PRIVATE, kd->pmfd, 0);  in powerpc_maphdrs()
101 	if (vm->map == MAP_FAILED) {  in powerpc_maphdrs()
102 		_kvm_err(kd, kd->program, "cannot map corefile");  in powerpc_maphdrs()
103 		return (-1);  in powerpc_maphdrs()
105 	vm->dmphdrsz = 0;  in powerpc_maphdrs()
106 	vm->eh = vm->map;  in powerpc_maphdrs()
107 	if (!valid_elf_header(vm->eh)) {  in powerpc_maphdrs()
114 		vm->dmphdrsz = dump_header_size(vm->map);  in powerpc_maphdrs()
115 		if (vm->dmphdrsz == 0)  in powerpc_maphdrs()
117 		vm->eh = (void *)((uintptr_t)vm->map + vm->dmphdrsz);  in powerpc_maphdrs()
118 		if (!valid_elf_header(vm->eh))  in powerpc_maphdrs()
121 	mapsz = be16toh(vm->eh->e_phentsize) * be16toh(vm->eh->e_phnum) +  in powerpc_maphdrs()
122 	    be32toh(vm->eh->e_phoff);  in powerpc_maphdrs()
123 	munmap(vm->map, vm->mapsz);  in powerpc_maphdrs()
125 	/* Map all headers. */  in powerpc_maphdrs()
126 	vm->mapsz = vm->dmphdrsz + mapsz;  in powerpc_maphdrs()
127 	vm->map = mmap(NULL, vm->mapsz, PROT_READ, MAP_PRIVATE, kd->pmfd, 0);  in powerpc_maphdrs()
128 	if (vm->map == MAP_FAILED) {  in powerpc_maphdrs()
129 		_kvm_err(kd, kd->program, "cannot map corefile headers");  in powerpc_maphdrs()
130 		return (-1);  in powerpc_maphdrs()
132 	vm->eh = (void *)((uintptr_t)vm->map + vm->dmphdrsz);  in powerpc_maphdrs()
133 	vm->ph = (void *)((uintptr_t)vm->eh + be32toh(vm->eh->e_phoff));  in powerpc_maphdrs()
137 	_kvm_err(kd, kd->program, "invalid corefile");  in powerpc_maphdrs()
138 	return (-1);  in powerpc_maphdrs()
149 	struct vmstate *vm = kd->vmst;  in powerpc_va2off()  local
153 	ph = vm->ph;  in powerpc_va2off()
154 	nph = be16toh(vm->eh->e_phnum);  in powerpc_va2off()
155 	while (nph && (va < be32toh(ph->p_vaddr) ||  in powerpc_va2off()
156 	    va >= be32toh(ph->p_vaddr) + be32toh(ph->p_memsz))) {  in powerpc_va2off()
157 		nph--;  in powerpc_va2off()
158 		ph = (void *)((uintptr_t)ph + be16toh(vm->eh->e_phentsize));  in powerpc_va2off()
164 	*ofs = vm->dmphdrsz + be32toh(ph->p_offset) +  in powerpc_va2off()
165 	    (va - be32toh(ph->p_vaddr));  in powerpc_va2off()
166 	return (be32toh(ph->p_memsz) - (va - be32toh(ph->p_vaddr)));  in powerpc_va2off()
172 	struct vmstate *vm = kd->vmst;  in _powerpc_freevtop()  local
174 	if (vm->eh != MAP_FAILED)  in _powerpc_freevtop()
175 		munmap(vm->eh, vm->mapsz);  in _powerpc_freevtop()
176 	free(vm);  in _powerpc_freevtop()
177 	kd->vmst = NULL;  in _powerpc_freevtop()
185 	    kd->nlehdr.e_ident[EI_DATA] == ELFDATA2MSB);  in _powerpc_probe()
192 	kd->vmst = (struct vmstate *)_kvm_malloc(kd, sizeof(*kd->vmst));  in _powerpc_initvtop()
193 	if (kd->vmst == NULL)  in _powerpc_initvtop()
194 		return (-1);  in _powerpc_initvtop()
196 	if (powerpc_maphdrs(kd) == -1)  in _powerpc_initvtop()
197 		return (-1);  in _powerpc_initvtop()
205 	struct vmstate *vm;  in _powerpc_kvatop()  local
207 	vm = kd->vmst;  in _powerpc_kvatop()
208 	if (be32toh(vm->ph->p_paddr) == 0xffffffff)  in _powerpc_kvatop()
211 	_kvm_err(kd, kd->program, "Raw corefile not supported");  in _powerpc_kvatop()