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target-mips: correct DERET instruction

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Fix Debug Mode flag clearing, and when DERET is placed between LL and SC
do not make SC fail.

Backports commit fe87c2b36ae9c1c9a5279f3891f3bce1b573baa0 from qemu
This commit is contained in:
Leon Alrae 2018-02-14 17:01:25 -05:00 committed by Lioncash
parent 5ee529edd3
commit 884fe72f54
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GPG key ID: 4E3C3CC1031BA9C7
1 changed files with 1 additions and 2 deletions
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3
qemu/target-mips/op_helper.c
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@ -2162,10 +2162,9 @@ void helper_deret(CPUMIPSState *env)
debug_pre_eret(env);
set_pc(env, env->CP0_DEPC);
env->hflags &= MIPS_HFLAG_DM;
env->hflags &= ~MIPS_HFLAG_DM;
compute_hflags(env);
debug_post_eret(env);
env->lladdr = 1;
}
#endif /* !CONFIG_USER_ONLY */