From: Laurent Vivier <laurent@vivier.eu>
To: LemonBoy <thatlemon@gmail.com>
Cc: richard.henderson@linaro.org, qemu-devel@nongnu.org
Subject: Re: [PATCH] linux-user/sparc64: Translate flushw opcode
Date: Thu, 28 May 2020 19:13:05 +0200 [thread overview]
Message-ID: <61e6f953-8b6c-a10b-8604-92e300146a93@vivier.eu> (raw)
In-Reply-To: <894ec93e-05dd-2110-a0c2-e0afa2fa6fd5@gmail.com>
LemonBoy,
could you resend a series of two patches modified as said by Richard?
Changes should be only cosmetic.
Thanks,
Laurent
Le 10/04/2020 à 23:14, LemonBoy a écrit :
> From 11d0cfe58d12e0f191b435ade88622cfceb2098a Mon Sep 17 00:00:00 2001
> From: LemonBoy <thatlemon@gmail.com>
> Date: Fri, 10 Apr 2020 22:55:26 +0200
> Subject: [PATCH] linux-user/sparc64: Translate flushw opcode
>
> The ifdef logic should unconditionally compile in the `xop == 0x2b` case
> when targeting sparc64.
>
> 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>
> ---
> bsd-user/main.c | 4 +++-
> linux-user/sparc/cpu_loop.c | 4 +++-
> target/sparc/translate.c | 2 ++
> 3 files changed, 8 insertions(+), 2 deletions(-)
>
> diff --git a/bsd-user/main.c b/bsd-user/main.c
> index 770c2b267a..d6b1c997e3 100644
> --- a/bsd-user/main.c
> +++ b/bsd-user/main.c
> @@ -413,7 +413,9 @@ 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
> diff --git a/linux-user/sparc/cpu_loop.c b/linux-user/sparc/cpu_loop.c
> index 7645cc04ca..20a7401126 100644
> --- a/linux-user/sparc/cpu_loop.c
> +++ b/linux-user/sparc/cpu_loop.c
> @@ -69,7 +69,9 @@ 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
> diff --git a/target/sparc/translate.c b/target/sparc/translate.c
> index 9416a551cf..1a4efd4ed6 100644
> --- a/target/sparc/translate.c
> +++ b/target/sparc/translate.c
> @@ -3663,6 +3663,8 @@ static void disas_sparc_insn(DisasContext * dc, unsigned int insn)
> #endif
> gen_store_gpr(dc, rd, cpu_tmp0);
> break;
> +#endif
> +#if defined(TARGET_SPARC64) || !defined(CONFIG_USER_ONLY)
> } else if (xop == 0x2b) { /* rdtbr / V9 flushw */
> #ifdef TARGET_SPARC64
> gen_helper_flushw(cpu_env);
>
next prev parent reply other threads:[~2020-05-28 17:14 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-04-10 21:14 [PATCH] linux-user/sparc64: Translate flushw opcode LemonBoy
2020-04-17 11:06 ` LemonBoy
2020-05-07 14:17 ` Laurent Vivier
2020-05-07 15:29 ` Artyom Tarasenko
2020-05-07 18:33 ` Richard Henderson
2020-05-28 17:13 ` Laurent Vivier [this message]
2020-06-08 17:29 ` Philippe Mathieu-Daudé
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