Hello, I'm posting this here instead of opening an issue as it is not clear to me if this is a bug or not.
The issue is located in function "cpu_compute_eflags" in target/i386/cpu.h (https://gitlab.com/qemu-project/qemu/-/blob/master/target/i386/cpu.h#L2071) This function is exectued in an out of cpu loop context. It is used to synchronize TCG internal eflags registers (CC_OP, CC_SRC, etc...) with the CPU eflags field upon loop exit. It does: eflags |= cpu_cc_compute_all(env, CC_OP) | (env->df & DF_MASK); Shouldn't it be: eflags = cpu_cc_compute_all(env, CC_OP) | (env->df & DF_MASK); as eflags is entirely reevaluated by "cpu_cc_compute_all" ? Thanks, Kind regards, Stevie
