def __init__(self, path, backend):
self.path = path
self.backend = backend
self.fileobj = open(path, 'rb')
self.elf = elffile.open(fileobj=self.fileobj)
self.linker = Linker(self)
self.final_hook = []
self.asm_hook = []
self.c_hook = []
self.verbose = False
autolink.declare(self.linker)
start = 0xFFFFFFFFFFFFFFFF
end = 0
# TODO: doesn't handle new mem being mapped or unmapped
for ph in reversed(self.elf.progs):
if ph.isload:
start = min(start, ph.vaddr)
end = max(ph.vaddr + ph.vsize, end)
# add patch segment
def new_segment(addr):
align = 0x1000
ph = self.elf.programHeaderClass()
ph.data = bytearray()
ph.type = PT['PT_LOAD'].code
ph.vaddr = (addr + align - 1) & ~(align - 1)
ph.paddr = ph.vaddr
# TODO: default is RWX?!
ph.flags = 7
ph.align = align
ph.memsz = 0
ph.filesz = 0
self.elf.progs.append(ph)
return ph
# RX
self.code = new_segment(end)
self.code.flags = 5
# RW
self.data = new_segment(end + 0x800000)
self.data.flags = 6
self.entry_hooks = []
self.arch = arch.create_arch(self, backend)
def __init__(self, path):
self.path = path
self.fileobj = open(path, 'rb')
self.elf = elffile.open(fileobj=self.fileobj)
self.linker = Linker(self)
self.final_hook = []
self.asm_hook = []
self.c_hook = []
self.verbose = False
autolink.declare(self.linker)
start = 0xFFFFFFFFFFFFFFFF
end = 0
# TODO: doesn't handle new mem being mapped or unmapped
for ph in reversed(self.elf.progs):
if elfutil.is_load(ph):
start = min(start, ph.vaddr)
end = max(ph.vaddr + ph.vsize, end)
# add patch segment
def new_segment(addr):
align = 0x1000
ph = self.elf.programHeaderClass()
ph.data = bytearray()
ph.type = PT.byname['PT_LOAD'].code
ph.vaddr = (addr + align - 1) & ~(align - 1)
ph.paddr = ph.vaddr
# TODO: default is RWX?!
ph.flags = 7
ph.align = align
ph.memsz = 0
ph.filesz = 0
self.elf.progs.append(ph)
return ph
self.patch = new_segment(end)
self.nxpatch = new_segment(end + 0x800000)
self.nxpatch.flags = 6
self.linkpatch = new_segment(end + 0x1600000)
self.jitpatch = new_segment(end + 0x2400000)
self.entry_hooks = []