def compile_dwarf(dies, little_endian=True, bits=64):
if isinstance(dies, DwarfDie):
dies = (dies, )
assert all(isinstance(die, DwarfDie) for die in dies)
cu_die = DwarfDie(DW_TAG.compile_unit, [
DwarfAttrib(DW_AT.comp_dir, DW_FORM.string, '/usr/src'),
DwarfAttrib(DW_AT.stmt_list, DW_FORM.sec_offset, 0),
], dies)
return create_elf_file(ET.EXEC, [
ElfSection(
name='.debug_abbrev',
sh_type=SHT.PROGBITS,
data=_compile_debug_abbrev(cu_die),
),
ElfSection(
name='.debug_info',
sh_type=SHT.PROGBITS,
data=_compile_debug_info(cu_die, little_endian, bits),
),
ElfSection(
name='.debug_line',
sh_type=SHT.PROGBITS,
data=_compile_debug_line(cu_die, little_endian),
),
ElfSection(
name='.debug_str',
sh_type=SHT.PROGBITS,
data=b'\0',
),
],
little_endian=little_endian,
bits=bits)
def test_simple(self):
data = b"hello, world"
prog = Program()
with tempfile.NamedTemporaryFile() as f:
f.write(
create_elf_file(
ET.CORE,
[ElfSection(p_type=PT.LOAD, vaddr=0xFFFF0000, data=data)]))
f.flush()
prog.set_core_dump(f.name)
self.assertEqual(prog.read(0xFFFF0000, len(data)), data)
self.assertRaises(FaultError, prog.read, 0x0, len(data), physical=True)
def compile_dwarf(
dies, little_endian=True, bits=64, *, lang=None, use_dw_form_indirect=False
):
return create_elf_file(
ET.EXEC,
dwarf_sections(
dies,
little_endian=little_endian,
bits=bits,
lang=lang,
use_dw_form_indirect=use_dw_form_indirect,
),
little_endian=little_endian,
bits=bits,
)
def compile_dwarf(dies, little_endian=True, bits=64, *, lang=None):
if isinstance(dies, DwarfDie):
dies = (dies, )
assert all(isinstance(die, DwarfDie) for die in dies)
cu_attribs = [
DwarfAttrib(DW_AT.comp_dir, DW_FORM.string, "/usr/src"),
DwarfAttrib(DW_AT.stmt_list, DW_FORM.sec_offset, 0),
]
if lang is not None:
cu_attribs.append(DwarfAttrib(DW_AT.language, DW_FORM.data1, lang))
cu_die = DwarfDie(DW_TAG.compile_unit, cu_attribs, dies)
return create_elf_file(
ET.EXEC,
[
ElfSection(
p_type=PT.LOAD,
vaddr=0xFFFF0000,
data=b"",
),
ElfSection(
name=".debug_abbrev",
sh_type=SHT.PROGBITS,
data=_compile_debug_abbrev(cu_die),
),
ElfSection(
name=".debug_info",
sh_type=SHT.PROGBITS,
data=_compile_debug_info(cu_die, little_endian, bits),
),
ElfSection(
name=".debug_line",
sh_type=SHT.PROGBITS,
data=_compile_debug_line(cu_die, little_endian),
),
ElfSection(
name=".debug_str",
sh_type=SHT.PROGBITS,
data=b"\0",
),
],
little_endian=little_endian,
bits=bits,
)
def create_elf_symbol_file(symbols):
# We need some DWARF data so that libdwfl will load the file.
sections = dwarf_sections(())
# Create a section for the symbols to reference and the corresponding
# segment for address lookups.
min_address = min(symbol.value for symbol in symbols)
max_address = max(symbol.value + symbol.size for symbol in symbols)
sections.append(
ElfSection(
name=".foo",
sh_type=SHT.NOBITS,
p_type=PT.LOAD,
vaddr=min_address,
memsz=max_address - min_address,
))
symbols = [
symbol._replace(shindex=len(sections)
if symbol.shindex is None else symbol.shindex)
for symbol in symbols
]
return create_elf_file(ET.EXEC, sections, symbols)
