9 #include "qemu/host-utils.h"
16 #define ROUND_UP(n, d) (((n) + (d) - 1) & -(0 ? (n) : (d)))
21     return s->gs.base >> 63;  in is_system()
24 Elf64_Phdr *elf64_getphdr(void *map)  in elf64_getphdr()  argument
26     Elf64_Ehdr *ehdr = map;  in elf64_getphdr()
27     Elf64_Phdr *phdr = (void *)((uint8_t *)map + ehdr->e_phoff);  in elf64_getphdr()
32 Elf64_Half elf_getphdrnum(void *map)  in elf_getphdrnum()  argument
34     Elf64_Ehdr *ehdr = map;  in elf_getphdrnum()
36     return ehdr->e_phnum;  in elf_getphdrnum()
43     if (uadd64_overflow(offset, size, &offset) || offset > UINT64_MAX - 3) {  in advance_note_offset()
60     Elf64_Phdr *phdr = elf64_getphdr(qe->map);  in init_states()
74     qe->has_kernel_gs_base = 1;  in init_states()
79         end_offset > qe->size) {  in init_states()
80         end_offset = qe->size;  in init_states()
84         nhdr = (void *)((uint8_t *)qe->map + offset);  in init_states()
90         name = (char *)qe->map + offset;  in init_states()
92         if (!advance_note_offset(&offset, nhdr->n_namesz, end_offset)) {  in init_states()
96         state = (void *)((uint8_t *)qe->map + offset);  in init_states()
98         if (!advance_note_offset(&offset, nhdr->n_descsz, end_offset)) {  in init_states()
103             nhdr->n_descsz >= offsetof(QEMUCPUState, kernel_gs_base)) {  in init_states()
104             state_size = MIN(state->size, nhdr->n_descsz);  in init_states()
108                         states->len, state_size);  in init_states()
111                  * no one has.  in init_states()
113                 qe->has_kernel_gs_base = 0;  in init_states()
119     printf("%u CPU states has been found\n", states->len);  in init_states()
121     qe->state_nr = states->len;  in init_states()
122     qe->state = (void *)g_ptr_array_free(states, FALSE);  in init_states()
129     g_free(qe->state);  in exit_states()
134     Elf64_Ehdr *ehdr = qe->map;  in check_ehdr()
137     if (sizeof(Elf64_Ehdr) > qe->size) {  in check_ehdr()
142     if (memcmp(ehdr->e_ident, ELFMAG, SELFMAG)) {  in check_ehdr()
147     if (ehdr->e_ident[EI_CLASS] != ELFCLASS64 ||  in check_ehdr()
148             ehdr->e_ident[EI_DATA] != ELFDATA2LSB) {  in check_ehdr()
149         eprintf("Invalid ELF class or byte order, must be 64-bit LE\n");  in check_ehdr()
153     if (ehdr->e_ident[EI_VERSION] != EV_CURRENT) {  in check_ehdr()
158     if (ehdr->e_machine != EM_X86_64) {  in check_ehdr()
163     if (ehdr->e_type != ET_CORE) {  in check_ehdr()
172     if (ehdr->e_phnum < 2) {  in check_ehdr()
177     if (umul64_overflow(ehdr->e_phnum, sizeof(Elf64_Phdr), &phendoff) ||  in check_ehdr()
178         uadd64_overflow(phendoff, ehdr->e_phoff, &phendoff) ||  in check_ehdr()
179         phendoff > qe->size) {  in check_ehdr()
196     if (fd == -1) {  in QEMU_Elf_map()
206     qe->size = st.st_size;  in QEMU_Elf_map()
208     qe->map = mmap(NULL, qe->size, PROT_READ | PROT_WRITE,  in QEMU_Elf_map()
210     if (qe->map == MAP_FAILED) {  in QEMU_Elf_map()
211         eprintf("Failed to map ELF file\n");  in QEMU_Elf_map()
222     qe->gmf = g_mapped_file_new(filename, TRUE, &gerr);  in QEMU_Elf_map()
224         eprintf("Failed to map ELF dump file \'%s\'\n", filename);  in QEMU_Elf_map()
229     qe->map = g_mapped_file_get_contents(qe->gmf);  in QEMU_Elf_map()
230     qe->size = g_mapped_file_get_length(qe->gmf);  in QEMU_Elf_map()
239     munmap(qe->map, qe->size);  in QEMU_Elf_unmap()
241     g_mapped_file_unref(qe->gmf);  in QEMU_Elf_unmap()