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linux-user/sparc64: Fix the handling of window spill trap

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Fix the handling of window spill traps by keeping cansave into account
when calculating the new CWP.

Signed-off-by: Giuseppe Musacchio <thatlemon@gmail.com>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20200625091204.3186186-3-laurent@vivier.eu>
This commit is contained in:
Giuseppe Musacchio 2020-06-25 11:12:04 +02:00 committed by Laurent Vivier
parent aa04c9d9ef
commit d43624c400
2 changed files with 10 additions and 2 deletions
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6
bsd-user/main.c
View File

@ -413,7 +413,11 @@ static void save_window(CPUSPARCState *env)
save_window_offset(env, cpu_cwp_dec(env, env->cwp - 2));
env->wim = new_wim;
#else
save_window_offset(env, cpu_cwp_dec(env, env->cwp - 2));
/*
* cansave is zero if the spill trap handler is triggered by `save` and
* nonzero if triggered by a `flushw`
*/
save_window_offset(env, cpu_cwp_dec(env, env->cwp - env->cansave - 2));
env->cansave++;
env->canrestore--;
#endif

6
linux-user/sparc/cpu_loop.c
View File

@ -69,7 +69,11 @@ static void save_window(CPUSPARCState *env)
save_window_offset(env, cpu_cwp_dec(env, env->cwp - 2));
env->wim = new_wim;
#else
save_window_offset(env, cpu_cwp_dec(env, env->cwp - 2));
/*
* cansave is zero if the spill trap handler is triggered by `save` and
* nonzero if triggered by a `flushw`
*/
save_window_offset(env, cpu_cwp_dec(env, env->cwp - env->cansave - 2));
env->cansave++;
env->canrestore--;
#endif