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Map AArch64 xsp to Unicorn's SP register #361

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Map AArch64 xsp to Unicorn's SP register #361

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4 changes: 4 additions & 0 deletions archinfo/arch_aarch64.py
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Original file line number Diff line number Diff line change
Expand Up @@ -22,6 +22,10 @@
class ArchAArch64(Arch):
def __init__(self, endness=Endness.LE):
super().__init__(endness)
if _unicorn is not None:

@twizmwazin twizmwazin Aug 3, 2026

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Does this seem like the best place to have put this?

unicorn_sp = _unicorn.arm64_const.UC_ARM64_REG_SP
self.uc_regs["xsp"] = unicorn_sp
self.vex_to_unicorn_map[self.sp_offset] = (unicorn_sp, self.bytes)
if endness == Endness.BE:
self.pcode_id = "AARCH64:BE:64:v8A"
self.ida_processor = "armb"
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14 changes: 14 additions & 0 deletions tests/test_aarch64.py
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Original file line number Diff line number Diff line change
@@ -0,0 +1,14 @@
from __future__ import annotations

import pytest

from archinfo import ArchAArch64


def test_unicorn_stack_pointer_mapping():
unicorn = pytest.importorskip("unicorn")
arch = ArchAArch64()
unicorn_sp = unicorn.arm64_const.UC_ARM64_REG_SP

assert arch.uc_regs["xsp"] == unicorn_sp
assert arch.vex_to_unicorn_map[arch.sp_offset] == (unicorn_sp, arch.bytes)