int
elf_checkFile(void *elfFile)
{
return ISELF32 (elfFile)
? elf32_checkFile(elfFile)
: elf64_checkFile(elfFile);
}
static void
load_image(void** entry)
{
char* start = mod_dite_start;
char* end = mod_dite_end;
if(start == end) {
printf("elf-loader: error, dite image is empty!\n");
abort();
}
/* awiggins (2004-12-21): Should probably add an alignment check? */
/** awiggins (2005-05-29): Probably should add checks to see
* the correct kind of elf file is being loaded for the platform,
* or does the elf library do that somewhere?.
*/
if(!elf32_checkFile((struct Elf32_Header*)start)) {
*entry =
(void*)(uintptr_t)elf32_getEntryPoint((struct Elf32_Header*)start);
} else if(!elf64_checkFile((struct Elf64_Header*)start)) {
*entry =
(void*)(uintptr_t)elf64_getEntryPoint((struct Elf64_Header*)start);
} else {
printf("elf-loader: error, dite image not a valid elf file!\n");
abort();
}
#ifdef __PPC64__
if (arch_claim_memory((struct Elf32_Header*)start)) {
printf("could not claim memory for elf file!\n");
abort();
}
#endif
if(!elf_loadFile(start, 1)) {
printf("elf-loader: error, unable to load dite image!\n");
abort();
}
}
/*
* prints out some details of one elf file
*/
void
elf64_showDetails(void *elfFile, int size, char *name)
{
struct Elf64_Phdr *segments;
unsigned numSegments;
struct Elf64_Shdr *sections;
unsigned numSections;
int i,
r;
char *str_table;
printf("Found an elf64 file called \"%s\" located "
"at address 0x%lx\n", name, elfFile);
if ((r = elf64_checkFile(elfFile)) != 0) {
char *magic = elfFile;
printf("Invalid elf file (%d)\n", r);
printf("Magic is: %02.2hhx %02.2hhx %02.2hhx %02.2hhx\n",
magic[0], magic[1], magic[2], magic[3]);
return;
}
str_table = elf64_getSegmentStringTable(elfFile);
printf("Got str_table... %p\n", str_table);
/*
* get a pointer to the table of program segments
*/
segments = elf64_getProgramSegmentTable(elfFile);
numSegments = elf64_getNumProgramSegments(elfFile);
sections = elf64_getSectionTable(elfFile);
numSections = elf64_getNumSections(elfFile);
if ((void *) sections > (void *) elfFile + size ||
(((uintptr_t) sections & 0xf) != 0)) {
printf("Corrupted elfFile..\n");
return;
}
printf("Sections: %p\n", sections);
/*
* print out info about each section
*/
/*
* print out info about each program segment
*/
printf("Program Headers:\n");
printf(" Type Offset VirtAddr PhysAddr "
"FileSiz MemSiz Flg Align\n");
for (i = 0; i < numSegments; i++) {
if (segments[i].p_type != 1) {
printf("segment %d is not loadable, "
"skipping\n", i);
} else {
printf(" LOAD 0x%06lx 0x%08lx 0x%08lx"
" 0x%05lx 0x%05lx %c%c%c 0x%04lx\n",
segments[i].p_offset, segments[i].p_vaddr,
segments[i].p_vaddr,
segments[i].p_filesz, segments[i].p_memsz,
segments[i].p_flags & PF_R ? 'R' : ' ',
segments[i].p_flags & PF_W ? 'W' : ' ',
segments[i].p_flags & PF_X ? 'E' : ' ',
segments[i].p_align);
}
}
printf("Section Headers:\n");
printf(" [Nr] Name Type Addr Off\n");
for (i = 0; i < numSections; i++) {
if (elf_checkSection(elfFile, i) == 0) {
printf("%-17.17s %-15.15s %08x %06x\n", elf64_getSectionName(elfFile, i), " " /* sections[i].sh_type
*/ ,
sections[i].sh_addr, sections[i].sh_offset);
}
}
}