bswap16s(&sym->st_shndx);
}
-static struct elf_shdr *glue(find_section, SZ)(struct elf_shdr *shdr_table,
+static struct elf_shdr *glue(find_section, SZ)(struct elf_shdr *shdr_table,
int n, int type)
{
int i;
return NULL;
}
+static int glue(symfind, SZ)(const void *s0, const void *s1)
+{
+ struct elf_sym *key = (struct elf_sym *)s0;
+ struct elf_sym *sym = (struct elf_sym *)s1;
+ int result = 0;
+ if (key->st_value < sym->st_value) {
+ result = -1;
+ } else if (key->st_value > sym->st_value + sym->st_size) {
+ result = 1;
+ }
+ return result;
+}
+
+static const char *glue(lookup_symbol, SZ)(struct syminfo *s, target_ulong orig_addr)
+{
+ struct elf_sym *syms = glue(s->disas_symtab.elf, SZ);
+ struct elf_sym key;
+ struct elf_sym *sym;
+
+ key.st_value = orig_addr;
+
+ sym = bsearch(&key, syms, s->disas_num_syms, sizeof(*syms), glue(symfind, SZ));
+ if (sym != 0) {
+ return s->disas_strtab + sym->st_name;
+ }
+
+ return "";
+}
+
+static int glue(symcmp, SZ)(const void *s0, const void *s1)
+{
+ struct elf_sym *sym0 = (struct elf_sym *)s0;
+ struct elf_sym *sym1 = (struct elf_sym *)s1;
+ return (sym0->st_value < sym1->st_value)
+ ? -1
+ : ((sym0->st_value > sym1->st_value) ? 1 : 0);
+}
+
static int glue(load_symbols, SZ)(struct elfhdr *ehdr, int fd, int must_swab)
{
struct elf_shdr *symtab, *strtab, *shdr_table = NULL;
struct elf_sym *syms = NULL;
-#if (SZ == 64)
- struct elf32_sym *syms32 = NULL;
-#endif
struct syminfo *s;
int nsyms, i;
char *str = NULL;
- shdr_table = load_at(fd, ehdr->e_shoff,
+ shdr_table = load_at(fd, ehdr->e_shoff,
sizeof(struct elf_shdr) * ehdr->e_shnum);
if (!shdr_table)
return -1;
-
+
if (must_swab) {
for (i = 0; i < ehdr->e_shnum; i++) {
glue(bswap_shdr, SZ)(shdr_table + i);
}
}
-
+
symtab = glue(find_section, SZ)(shdr_table, ehdr->e_shnum, SHT_SYMTAB);
if (!symtab)
goto fail;
goto fail;
nsyms = symtab->sh_size / sizeof(struct elf_sym);
-#if (SZ == 64)
- syms32 = qemu_mallocz(nsyms * sizeof(struct elf32_sym));
-#endif
- for (i = 0; i < nsyms; i++) {
+
+ i = 0;
+ while (i < nsyms) {
if (must_swab)
glue(bswap_sym, SZ)(&syms[i]);
-#if (SZ == 64)
- syms32[i].st_name = syms[i].st_name;
- syms32[i].st_info = syms[i].st_info;
- syms32[i].st_other = syms[i].st_other;
- syms32[i].st_shndx = syms[i].st_shndx;
- syms32[i].st_value = syms[i].st_value & 0xffffffff;
- syms32[i].st_size = syms[i].st_size & 0xffffffff;
+ /* We are only interested in function symbols.
+ Throw everything else away. */
+ if (syms[i].st_shndx == SHN_UNDEF ||
+ syms[i].st_shndx >= SHN_LORESERVE ||
+ ELF_ST_TYPE(syms[i].st_info) != STT_FUNC) {
+ nsyms--;
+ if (i < nsyms) {
+ syms[i] = syms[nsyms];
+ }
+ continue;
+ }
+#if defined(TARGET_ARM) || defined (TARGET_MIPS)
+ /* The bottom address bit marks a Thumb or MIPS16 symbol. */
+ syms[i].st_value &= ~(target_ulong)1;
#endif
+ i++;
}
+ syms = qemu_realloc(syms, nsyms * sizeof(*syms));
+
+ qsort(syms, nsyms, sizeof(*syms), glue(symcmp, SZ));
+
/* String table */
if (symtab->sh_link >= ehdr->e_shnum)
goto fail;
str = load_at(fd, strtab->sh_offset, strtab->sh_size);
if (!str)
- goto fail;
+ goto fail;
/* Commit */
s = qemu_mallocz(sizeof(*s));
-#if (SZ == 64)
- s->disas_symtab = syms32;
- qemu_free(syms);
-#else
- s->disas_symtab = syms;
-#endif
+ s->lookup_symbol = glue(lookup_symbol, SZ);
+ glue(s->disas_symtab.elf, SZ) = syms;
s->disas_num_syms = nsyms;
s->disas_strtab = str;
s->next = syminfos;
qemu_free(shdr_table);
return 0;
fail:
-#if (SZ == 64)
- qemu_free(syms32);
-#endif
qemu_free(syms);
qemu_free(str);
qemu_free(shdr_table);
return -1;
}
-int glue(load_elf, SZ)(int fd, int64_t virt_to_phys_addend, int must_swab)
+static int glue(load_elf, SZ)(int fd, int64_t address_offset,
+ int must_swab, uint64_t *pentry,
+ uint64_t *lowaddr, uint64_t *highaddr)
{
struct elfhdr ehdr;
struct elf_phdr *phdr = NULL, *ph;
int size, i, total_size;
- elf_word mem_size, addr;
- uint8_t *data;
+ elf_word mem_size;
+ uint64_t addr, low = 0, high = 0;
+ uint8_t *data = NULL;
if (read(fd, &ehdr, sizeof(ehdr)) != sizeof(ehdr))
goto fail;
glue(bswap_ehdr, SZ)(&ehdr);
}
+ if (ELF_MACHINE != ehdr.e_machine)
+ goto fail;
+
+ if (pentry)
+ *pentry = (uint64_t)(elf_sword)ehdr.e_entry;
+
glue(load_symbols, SZ)(&ehdr, fd, must_swab);
size = ehdr.e_phnum * sizeof(phdr[0]);
glue(bswap_phdr, SZ)(ph);
}
}
-
+
total_size = 0;
for(i = 0; i < ehdr.e_phnum; i++) {
ph = &phdr[i];
/* XXX: avoid allocating */
data = qemu_mallocz(mem_size);
if (ph->p_filesz > 0) {
- lseek(fd, ph->p_offset, SEEK_SET);
+ if (lseek(fd, ph->p_offset, SEEK_SET) < 0)
+ goto fail;
if (read(fd, data, ph->p_filesz) != ph->p_filesz)
goto fail;
}
- addr = ph->p_vaddr + virt_to_phys_addend;
+ /* address_offset is hack for kernel images that are
+ linked at the wrong physical address. */
+ addr = ph->p_paddr + address_offset;
cpu_physical_memory_write_rom(addr, data, mem_size);
total_size += mem_size;
+ if (!low || addr < low)
+ low = addr;
+ if (!high || (addr + mem_size) > high)
+ high = addr + mem_size;
qemu_free(data);
+ data = NULL;
}
}
+ qemu_free(phdr);
+ if (lowaddr)
+ *lowaddr = (uint64_t)(elf_sword)low;
+ if (highaddr)
+ *highaddr = (uint64_t)(elf_sword)high;
return total_size;
fail:
+ qemu_free(data);
qemu_free(phdr);
return -1;
}
-
projects / qemu.git / blobdiff