//--------------------------------------------------------------------------
// Name: generate_symbols
// Desc:
//--------------------------------------------------------------------------
bool generate_symbols(const QString &filename, std::ostream &os) {
QFile file(filename);
if(file.open(QIODevice::ReadOnly)) {
#if QT_VERSION >= 0x040700
os << qPrintable(QDateTime::currentDateTimeUtc().toString(Qt::ISODate)) << " +0000" << '\n';
#else
os << qPrintable(QDateTime::currentDateTime().toUTC().toString(Qt::ISODate)) << "+0000" << '\n';
#endif
const QByteArray md5 = edb::v1::get_file_md5(filename);
os << md5.toHex().data() << ' ' << qPrintable(QFileInfo(filename).absoluteFilePath()) << '\n';
if(auto file_ptr = reinterpret_cast<void *>(file.map(0, file.size(), QFile::NoOptions))) {
if(is_elf64(file_ptr)) {
process_symbols<elf64_model>(file_ptr, file.size(), os);
return true;
} else if(is_elf32(file_ptr)) {
process_symbols<elf32_model>(file_ptr, file.size(), os);
return true;
} else {
qDebug() << "unknown file type";
}
}
}
return false;
}
elf32_phdr_t* read_elf32_phdrs(char* filename, elf32_ehdr_t* ehdr, elf32_phdr_t* phdrs)
{
int fd = 0;
int n = 0;
int phdrs_sz = 0;
if (!ehdr) {
fprintf(stderr,"Empty ELF32 header!\n");
return 0;
}
if (!is_elf32((char*)ehdr)) {
fprintf(stderr,"Incorrect ELF32 header\n");
return 0;
}
if (ehdr->e_phnum)
phdrs_sz = ehdr->e_phnum*sizeof(elf32_phdr_t);
else {
fprintf(stderr,"Missing program headers\n");
return 0;
}
if (!phdrs)
phdrs = (elf32_phdr_t*)malloc(phdrs_sz);
if (!phdrs) {
perror(__FUNCTION__);
return 0;
}
if ((fd = open(filename,O_RDONLY)) < 0) {
perror(__FUNCTION__);
return 0;
}
if(lseek(fd, ehdr->e_phoff, SEEK_SET) < 0) {
perror(__FUNCTION__);
free(phdrs);
return 0;
}
if ((n = read(fd, phdrs, phdrs_sz)) < 0) {
perror(__FUNCTION__);
free(phdrs);
close(fd);
return 0;
}
if (n != phdrs_sz) {
fprintf(stderr,"Wrong size: want %d but get %d bytes\n", phdrs_sz, n);
free(phdrs);
}
close(fd);
return phdrs;
}
static void prep_kernel(unsigned long a1, unsigned long a2)
{
int len;
vmlinuz.addr = (unsigned long)_vmlinux_start;
vmlinuz.size = (unsigned long)(_vmlinux_end - _vmlinux_start);
/* gunzip the ELF header of the kernel */
if (*(unsigned short *)vmlinuz.addr == 0x1f8b) {
len = vmlinuz.size;
gunzip(elfheader, sizeof(elfheader),
(unsigned char *)vmlinuz.addr, &len);
} else
memcpy(elfheader, (const void *)vmlinuz.addr,
sizeof(elfheader));
if (!is_elf64(elfheader) && !is_elf32(elfheader)) {
printf("Error: not a valid PPC32 or PPC64 ELF file!\n\r");
exit();
}
if (platform_ops.image_hdr)
platform_ops.image_hdr(elfheader);
/* We need to alloc the memsize plus the file offset since gzip
* will expand the header (file offset), then the kernel, then
* possible rubbish we don't care about. But the kernel bss must
* be claimed (it will be zero'd by the kernel itself)
*/
printf("Allocating 0x%lx bytes for kernel ...\n\r", vmlinux.memsize);
vmlinux.addr = (unsigned long)malloc(vmlinux.memsize);
if (vmlinux.addr == 0) {
printf("Can't allocate memory for kernel image !\n\r");
exit();
}
/*
* Now find the initrd
*
* First see if we have an image attached to us. If so
* allocate memory for it and copy it there.
*/
initrd.size = (unsigned long)(_initrd_end - _initrd_start);
initrd.memsize = initrd.size;
if (initrd.size > 0) {
printf("Allocating 0x%lx bytes for initrd ...\n\r",
initrd.size);
initrd.addr = (unsigned long)malloc((u32)initrd.size);
if (initrd.addr == 0) {
printf("Can't allocate memory for initial "
"ramdisk !\n\r");
exit();
}
printf("initial ramdisk moving 0x%lx <- 0x%lx "
"(0x%lx bytes)\n\r", initrd.addr,
(unsigned long)_initrd_start, initrd.size);
memmove((void *)initrd.addr, (void *)_initrd_start,
initrd.size);
printf("initrd head: 0x%lx\n\r",
*((unsigned long *)initrd.addr));
} else if (a2 != 0) {
/* Otherwise, see if yaboot or another loader gave us an initrd */
initrd.addr = a1;
initrd.memsize = initrd.size = a2;
printf("Using loader supplied initrd at 0x%lx (0x%lx bytes)\n\r",
initrd.addr, initrd.size);
}
/* Eventually gunzip the kernel */
if (*(unsigned short *)vmlinuz.addr == 0x1f8b) {
printf("gunzipping (0x%lx <- 0x%lx:0x%0lx)...",
vmlinux.addr, vmlinuz.addr, vmlinuz.addr+vmlinuz.size);
len = vmlinuz.size;
gunzip((void *)vmlinux.addr, vmlinux.memsize,
(unsigned char *)vmlinuz.addr, &len);
printf("done 0x%lx bytes\n\r", len);
} else {
memmove((void *)vmlinux.addr,(void *)vmlinuz.addr,
vmlinuz.size);
}
/* Skip over the ELF header */
#ifdef DEBUG
printf("... skipping 0x%lx bytes of ELF header\n\r",
elfoffset);
#endif
vmlinux.addr += elfoffset;
flush_cache((void *)vmlinux.addr, vmlinux.size);
}
void start(unsigned long a1, unsigned long a2, void *promptr, void *sp)
{
int len;
kernel_entry_t kernel_entry;
memset(__bss_start, 0, _end - __bss_start);
prom = (int (*)(void *)) promptr;
chosen_handle = finddevice("/chosen");
if (chosen_handle == (void *) -1)
exit();
if (getprop(chosen_handle, "stdout", &stdout, sizeof(stdout)) != 4)
exit();
printf("\n\rzImage starting: loaded at 0x%p (sp: 0x%p)\n\r", _start, sp);
/*
* The first available claim_base must be above the end of the
* the loaded kernel wrapper file (_start to _end includes the
* initrd image if it is present) and rounded up to a nice
* 1 MB boundary for good measure.
*/
claim_base = _ALIGN_UP((unsigned long)_end, ONE_MB);
vmlinuz.addr = (unsigned long)_vmlinux_start;
vmlinuz.size = (unsigned long)(_vmlinux_end - _vmlinux_start);
/* gunzip the ELF header of the kernel */
if (*(unsigned short *)vmlinuz.addr == 0x1f8b) {
len = vmlinuz.size;
gunzip(elfheader, sizeof(elfheader),
(unsigned char *)vmlinuz.addr, &len);
} else
memcpy(elfheader, (const void *)vmlinuz.addr, sizeof(elfheader));
if (!is_elf64(elfheader) && !is_elf32(elfheader)) {
printf("Error: not a valid PPC32 or PPC64 ELF file!\n\r");
exit();
}
/* We need to claim the memsize plus the file offset since gzip
* will expand the header (file offset), then the kernel, then
* possible rubbish we don't care about. But the kernel bss must
* be claimed (it will be zero'd by the kernel itself)
*/
printf("Allocating 0x%lx bytes for kernel ...\n\r", vmlinux.memsize);
vmlinux.addr = try_claim(vmlinux.memsize);
if (vmlinux.addr == 0) {
printf("Can't allocate memory for kernel image !\n\r");
exit();
}
/*
* Now we try to claim memory for the initrd (and copy it there)
*/
initrd.size = (unsigned long)(_initrd_end - _initrd_start);
initrd.memsize = initrd.size;
if ( initrd.size > 0 ) {
printf("Allocating 0x%lx bytes for initrd ...\n\r", initrd.size);
initrd.addr = try_claim(initrd.size);
if (initrd.addr == 0) {
printf("Can't allocate memory for initial ramdisk !\n\r");
exit();
}
a1 = initrd.addr;
a2 = initrd.size;
printf("initial ramdisk moving 0x%lx <- 0x%lx (0x%lx bytes)\n\r",
initrd.addr, (unsigned long)_initrd_start, initrd.size);
memmove((void *)initrd.addr, (void *)_initrd_start, initrd.size);
printf("initrd head: 0x%lx\n\r", *((unsigned long *)initrd.addr));
}
/* Eventually gunzip the kernel */
if (*(unsigned short *)vmlinuz.addr == 0x1f8b) {
printf("gunzipping (0x%lx <- 0x%lx:0x%0lx)...",
vmlinux.addr, vmlinuz.addr, vmlinuz.addr+vmlinuz.size);
len = vmlinuz.size;
gunzip((void *)vmlinux.addr, vmlinux.memsize,
(unsigned char *)vmlinuz.addr, &len);
printf("done 0x%lx bytes\n\r", len);
} else {
memmove((void *)vmlinux.addr,(void *)vmlinuz.addr,vmlinuz.size);
}
export_cmdline(chosen_handle);
/* Skip over the ELF header */
#ifdef DEBUG
printf("... skipping 0x%lx bytes of ELF header\n\r",
elfoffset);
#endif
vmlinux.addr += elfoffset;
flush_cache((void *)vmlinux.addr, vmlinux.size);
kernel_entry = (kernel_entry_t)vmlinux.addr;
#ifdef DEBUG
printf( "kernel:\n\r"
" entry addr = 0x%lx\n\r"
" a1 = 0x%lx,\n\r"
" a2 = 0x%lx,\n\r"
" prom = 0x%lx,\n\r"
" bi_recs = 0x%lx,\n\r",
(unsigned long)kernel_entry, a1, a2,
(unsigned long)prom, NULL);
#endif
kernel_entry(a1, a2, prom, NULL);
printf("Error: Linux kernel returned to zImage bootloader!\n\r");
exit();
}