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Added test for 32 bit ARM relocations

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Nicolas 2026-02-27 17:57:28 +01:00
parent 5663e7f5b0
commit 20b00109e9
3 changed files with 4174 additions and 0 deletions
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4109
tests/obj/stencils_armv7_O3.asm Normal file
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tests/obj/stencils_armv7_O3.o Normal file
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tests/test_arm_addend.py Normal file
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import pelfy._main as _main
import os
def test_arm_addend_extraction():
# Path to the test object file
obj_path = os.path.join('tests', 'obj', 'stencils_armv7_O3.o')
elf = _main.open_elf_file(obj_path)
# Collect all ARM relocations
reloc_addends: list[tuple[str, int, int, str]] = []
for reloc in elf.get_relocations():
if reloc.type.startswith('R_ARM'):
reloc_addends.append((reloc.type, reloc['r_offset'], reloc['r_addend'], reloc.symbol.name))
# Reference values from stencils_armv7_O3.asm (addend = 0 for V4BX, -8 for JUMP24/CALL)
reference = [
('R_ARM_V4BX', 0xB4, 0, ''),
('R_ARM_V4BX', 0xC0, 0, ''),
('R_ARM_V4BX', 0xD0, 0, ''),
('R_ARM_V4BX', 0x114, 0, ''),
('R_ARM_V4BX', 0x144, 0, ''),
('R_ARM_V4BX', 0x148, 0, ''),
('R_ARM_JUMP24', 0x124, -8, '__aeabi_idiv0'),
('R_ARM_JUMP24', 0x14, -8, 'auxsub_get_42'),
('R_ARM_CALL', 0x10, -8, 'result_int'),
('R_ARM_JUMP24', 0xC, -8, 'result_float_int'),
('R_ARM_JUMP24', 0xC, -8, 'result_float_float'),
('R_ARM_JUMP24', 0xC, -8, 'result_int_int'),
('R_ARM_JUMP24', 0xC, -8, 'result_int_float'),
('R_ARM_CALL', 0xC, -8, 'aux_get_42'),
('R_ARM_JUMP24', 0x14, -8, 'result_float'),
('R_ARM_CALL', 0x4, -8, 'aux_get_42'),
('R_ARM_JUMP24', 0xC, -8, 'result_float'),
('R_ARM_JUMP24', 0x4, -8, 'result_int'),
('R_ARM_JUMP24', 0x4, -8, 'result_float'),
('R_ARM_JUMP24', 0x2C, -8, 'result_float'),
('R_ARM_CALL', 0x30, -8, 'sqrtf'),
('R_ARM_JUMP24', 0x24, -8, 'result_float'),
('R_ARM_CALL', 0x28, -8, 'sqrtf'),
('R_ARM_CALL', 0xC, -8, 'expf'),
('R_ARM_JUMP24', 0x14, -8, 'result_float'),
('R_ARM_CALL', 0x4, -8, 'expf'),
('R_ARM_JUMP24', 0xC, -8, 'result_float'),
('R_ARM_CALL', 0xC, -8, 'logf'),
('R_ARM_JUMP24', 0x14, -8, 'result_float'),
('R_ARM_CALL', 0x4, -8, 'logf'),
('R_ARM_JUMP24', 0xC, -8, 'result_float'),
('R_ARM_CALL', 0xC, -8, 'sinf'),
('R_ARM_JUMP24', 0x14, -8, 'result_float'),
('R_ARM_CALL', 0x4, -8, 'sinf'),
('R_ARM_JUMP24', 0xC, -8, 'result_float'),
]
# For each reference, check that at least one matching relocation has the expected addend
for ref_type, ref_offset, ref_addend, ref_symbol in reference:
found = False
addend = None
for typ, offset, addend, symbol in reloc_addends:
if typ == ref_type and offset == ref_offset and symbol == ref_symbol and addend == ref_addend:
found = True
break
assert found, f"Missing or incorrect addend for {ref_type} offset=0x{ref_offset:X} symbol={ref_symbol} (value={addend}, expected {ref_addend})"
print(found, f"Missing or incorrect addend for {ref_type} offset=0x{ref_offset:X} symbol={ref_symbol} (value={addend}, expected {ref_addend})")
assert False