This patch adds alignment checks in the store operations (when stacking the return pc and psr) in the BLXNS instruction.
Resolves: https://gitlab.com/qemu-project/qemu/-/issues/1154 Signed-off-by: William Kosasih <kosasihwilli...@gmail.com> --- target/arm/tcg/m_helper.c | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-) diff --git a/target/arm/tcg/m_helper.c b/target/arm/tcg/m_helper.c index 251e12edf9..f342d93489 100644 --- a/target/arm/tcg/m_helper.c +++ b/target/arm/tcg/m_helper.c @@ -632,8 +632,11 @@ void HELPER(v7m_blxns)(CPUARMState *env, uint32_t dest) } /* Note that these stores can throw exceptions on MPU faults */ - cpu_stl_data_ra(env, sp, nextinst, GETPC()); - cpu_stl_data_ra(env, sp + 4, saved_psr, GETPC()); + ARMMMUIdx mmu_idx = arm_mmu_idx(env); + MemOpIdx oi = make_memop_idx(MO_TEUL | MO_ALIGN, + arm_to_core_mmu_idx(mmu_idx)); + cpu_stl_mmu(env, sp, nextinst, oi, GETPC()); + cpu_stl_mmu(env, sp + 4, saved_psr, oi, GETPC()); env->regs[13] = sp; env->regs[14] = 0xfeffffff; -- 2.48.1
