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From: "Alex Bennée" <alex.bennee@linaro.org>
To: "Philippe Mathieu-Daudé" <f4bug@amsat.org>
Cc: Sarah Harris <S.E.Harris@kent.ac.uk>,
	Thomas Huth <huth@tuxfamily.org>,
	Joaquin de Andres <me@xcancerberox.com.ar>,
	Richard Henderson <richard.henderson@linaro.org>,
	qemu-devel@nongnu.org, Michael Rolnik <mrolnik@gmail.com>
Subject: Re: [PATCH 2/3] target/avr: Fix $PC displayed address
Date: Tue, 07 Jul 2020 09:33:22 +0100	[thread overview]
Message-ID: <87a70bpvvx.fsf@linaro.org> (raw)
In-Reply-To: <20200707064646.7603-3-f4bug@amsat.org>


Philippe Mathieu-Daudé <f4bug@amsat.org> writes:

> $PC is 16-bit wide. Other registers display addresses on a byte
> granularity.
> To have a coherent ouput, display $PC using byte granularity too.
>
> Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
> ---
>  target/avr/cpu.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/target/avr/cpu.c b/target/avr/cpu.c
> index 50fb1c378b..9be464991f 100644
> --- a/target/avr/cpu.c
> +++ b/target/avr/cpu.c
> @@ -151,7 +151,7 @@ static void avr_cpu_dump_state(CPUState *cs, FILE *f, int flags)
>      int i;
>  
>      qemu_fprintf(f, "\n");
> -    qemu_fprintf(f, "PC:    %06x\n", env->pc_w);
> +    qemu_fprintf(f, "PC:    %06x\n", env->pc_w * 2);

OK this was confusing until I grepped around the code and found the
comment in set pc:

    cpu->env.pc_w = value / 2; /* internally PC points to words */

so it makes sense I guess but I didn't pick it up from the name. Maybe
worth adding the comment in CPUAVRstate?

Anyway:

Reviewed-by: Alex Bennée <alex.bennee@linaro.org>


>      qemu_fprintf(f, "SP:      %04x\n", env->sp);
>      qemu_fprintf(f, "rampD:     %02x\n", env->rampD >> 16);
>      qemu_fprintf(f, "rampX:     %02x\n", env->rampX >> 16);


-- 
Alex Bennée


  reply	other threads:[~2020-07-07  8:34 UTC|newest]

Thread overview: 7+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-07-07  6:46 [PATCH 0/3] target/avr: Few fixes Philippe Mathieu-Daudé
2020-07-07  6:46 ` [PATCH 1/3] target/avr: Drop tlb_flush() in avr_cpu_reset() Philippe Mathieu-Daudé
2020-07-07  8:27   ` Alex Bennée
2020-07-07  6:46 ` [PATCH 2/3] target/avr: Fix $PC displayed address Philippe Mathieu-Daudé
2020-07-07  8:33   ` Alex Bennée [this message]
2020-07-07  6:46 ` [RFC PATCH 3/3] target/avr: Fix SBRC/SBRS instructions Philippe Mathieu-Daudé
2020-07-07  8:56   ` Alex Bennée

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