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From: "Philippe Mathieu-Daudé" <philmd@redhat.com>
To: "Richard Henderson" <richard.henderson@linaro.org>,
	qemu-devel@nongnu.org, "Paolo Bonzini" <pbonzini@redhat.com>,
	"Marc-André Lureau" <marcandre.lureau@redhat.com>
Cc: "Thomas Huth" <thuth@redhat.com>, "Fam Zheng" <fam@euphon.net>,
	"Peter Maydell" <peter.maydell@linaro.org>,
	kvm@vger.kernel.org, "Alex Bennée" <alex.bennee@linaro.org>,
	qemu-arm@nongnu.org, "Richard Henderson" <rth@twiddle.net>
Subject: Re: [PATCH v4 09/12] target/arm: Make m_helper.c optional via CONFIG_ARM_V7M
Date: Fri, 29 Jan 2021 19:53:00 +0100	[thread overview]
Message-ID: <d57cc48a-2eb4-011d-7903-91042de507d3@redhat.com> (raw)
In-Reply-To: <d9af8896-efec-c850-655e-1d1eb2629762@linaro.org>

On 10/3/20 11:48 AM, Richard Henderson wrote:
> On 9/29/20 5:43 PM, Philippe Mathieu-Daudé wrote:
>> +arm_ss.add(when: 'CONFIG_ARM_V7M', if_true: files('m_helper.c'), if_false: files('m_helper-stub.c'))
>> +
>>  arm_ss.add(zlib)
>>  
>>  arm_ss.add(when: 'CONFIG_TCG', if_true: files('arm-semi.c'))
>> +arm_ss.add(when: 'CONFIG_TCG', if_false: files('m_helper-stub.c'))
> 
> I'm a bit surprised about adding the file twice.
> Since ARM_V7M depends on TCG, isn't the second line redundant?

This does:

if TCG
    if CONFIG_ARM_V7M
        files('m_helper.c')
    else #!V7M
        files('m_helper-stub.c'))
    endif
else #!TCG
    files('m_helper-stub.c'))
endif

So:

if !TCG or !V7M
    files('m_helper-stub.c'))
else
    files('m_helper.c')
endif

There might be a better way to express that in Meson...
I only understood how to do AND with arrays, but not OR.

Paolo/Marc-André, is it possible?

Thanks,

Phil.


WARNING: multiple messages have this Message-ID
From: "Philippe Mathieu-Daudé" <philmd@redhat.com>
To: "Richard Henderson" <richard.henderson@linaro.org>,
	qemu-devel@nongnu.org, "Paolo Bonzini" <pbonzini@redhat.com>,
	"Marc-André Lureau" <marcandre.lureau@redhat.com>
Cc: "Fam Zheng" <fam@euphon.net>,
	"Peter Maydell" <peter.maydell@linaro.org>,
	"Thomas Huth" <thuth@redhat.com>,
	kvm@vger.kernel.org, qemu-arm@nongnu.org,
	"Alex Bennée" <alex.bennee@linaro.org>,
	"Richard Henderson" <rth@twiddle.net>
Subject: Re: [PATCH v4 09/12] target/arm: Make m_helper.c optional via CONFIG_ARM_V7M
Date: Fri, 29 Jan 2021 19:53:00 +0100	[thread overview]
Message-ID: <d57cc48a-2eb4-011d-7903-91042de507d3@redhat.com> (raw)
In-Reply-To: <d9af8896-efec-c850-655e-1d1eb2629762@linaro.org>

On 10/3/20 11:48 AM, Richard Henderson wrote:
> On 9/29/20 5:43 PM, Philippe Mathieu-Daudé wrote:
>> +arm_ss.add(when: 'CONFIG_ARM_V7M', if_true: files('m_helper.c'), if_false: files('m_helper-stub.c'))
>> +
>>  arm_ss.add(zlib)
>>  
>>  arm_ss.add(when: 'CONFIG_TCG', if_true: files('arm-semi.c'))
>> +arm_ss.add(when: 'CONFIG_TCG', if_false: files('m_helper-stub.c'))
> 
> I'm a bit surprised about adding the file twice.
> Since ARM_V7M depends on TCG, isn't the second line redundant?

This does:

if TCG
    if CONFIG_ARM_V7M
        files('m_helper.c')
    else #!V7M
        files('m_helper-stub.c'))
    endif
else #!TCG
    files('m_helper-stub.c'))
endif

So:

if !TCG or !V7M
    files('m_helper-stub.c'))
else
    files('m_helper.c')
endif

There might be a better way to express that in Meson...
I only understood how to do AND with arrays, but not OR.

Paolo/Marc-André, is it possible?

Thanks,

Phil.



  reply	other threads:[~2021-01-29 18:54 UTC|newest]

Thread overview: 70+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-09-29 22:43 [PATCH v4 00/12] Support disabling TCG on ARM (part 2) Philippe Mathieu-Daudé
2020-09-29 22:43 ` Philippe Mathieu-Daudé
2020-09-29 22:43 ` [PATCH v4 01/12] accel/tcg: Add stub for cpu_loop_exit() Philippe Mathieu-Daudé
2020-09-29 22:43   ` Philippe Mathieu-Daudé
2020-09-30  7:08   ` Thomas Huth
2020-09-30  7:08     ` Thomas Huth
2020-10-03  9:09   ` Richard Henderson
2020-10-03  9:09     ` Richard Henderson
2020-09-29 22:43 ` [PATCH v4 02/12] meson: Allow optional target/${ARCH}/Kconfig Philippe Mathieu-Daudé
2020-09-29 22:43   ` Philippe Mathieu-Daudé
2020-09-30 12:50   ` Claudio Fontana
2020-09-30 12:50     ` Claudio Fontana
2020-09-30 13:17     ` Paolo Bonzini
2020-09-30 13:17       ` Paolo Bonzini
2020-10-03  9:13   ` Richard Henderson
2020-10-03  9:13     ` Richard Henderson
2020-10-03  9:15     ` Paolo Bonzini
2020-10-03  9:15       ` Paolo Bonzini
2020-10-03  9:32       ` Richard Henderson
2020-10-03  9:32         ` Richard Henderson
2020-09-29 22:43 ` [PATCH v4 03/12] target/arm: Select SEMIHOSTING if TCG is available Philippe Mathieu-Daudé
2020-09-29 22:43   ` Philippe Mathieu-Daudé
2020-10-03  9:43   ` Richard Henderson
2020-10-03  9:43     ` Richard Henderson
2020-09-29 22:43 ` [PATCH v4 04/12] target/arm: Restrict ARMv4 cpus to TCG accel Philippe Mathieu-Daudé
2020-09-29 22:43   ` Philippe Mathieu-Daudé
2020-09-30  8:03   ` Philippe Mathieu-Daudé
2020-09-30  8:03     ` Philippe Mathieu-Daudé
2020-10-03  9:17     ` Thomas Huth
2020-10-03  9:17       ` Thomas Huth
2020-09-29 22:43 ` [PATCH v4 05/12] target/arm: Restrict ARMv5 " Philippe Mathieu-Daudé
2020-09-29 22:43   ` Philippe Mathieu-Daudé
2020-09-29 22:43 ` [PATCH v4 06/12] target/arm: Restrict ARMv6 " Philippe Mathieu-Daudé
2020-09-29 22:43   ` Philippe Mathieu-Daudé
2020-09-29 22:43 ` [PATCH v4 07/12] target/arm: Restrict ARMv7 R-profile " Philippe Mathieu-Daudé
2020-09-29 22:43   ` Philippe Mathieu-Daudé
2020-09-29 22:43 ` [PATCH v4 08/12] target/arm: Restrict ARMv7 M-profile " Philippe Mathieu-Daudé
2020-09-29 22:43   ` Philippe Mathieu-Daudé
2020-09-29 22:43 ` [PATCH v4 09/12] target/arm: Make m_helper.c optional via CONFIG_ARM_V7M Philippe Mathieu-Daudé
2020-09-29 22:43   ` Philippe Mathieu-Daudé
2020-10-03  9:48   ` Richard Henderson
2020-10-03  9:48     ` Richard Henderson
2021-01-29 18:53     ` Philippe Mathieu-Daudé [this message]
2021-01-29 18:53       ` Philippe Mathieu-Daudé
2020-09-29 22:43 ` [PATCH v4 10/12] target/arm: Do not build TCG objects when TCG is off Philippe Mathieu-Daudé
2020-09-29 22:43   ` Philippe Mathieu-Daudé
2020-10-03  9:52   ` Richard Henderson
2020-10-03  9:52     ` Richard Henderson
2020-09-29 22:43 ` [PATCH v4 11/12] target/arm: Reorder meson.build rules Philippe Mathieu-Daudé
2020-09-29 22:43   ` Philippe Mathieu-Daudé
2020-10-03  9:53   ` Richard Henderson
2020-10-03  9:53     ` Richard Henderson
2020-09-29 22:43 ` [PATCH v4 12/12] .travis.yml: Add a KVM-only Aarch64 job Philippe Mathieu-Daudé
2020-09-29 22:43   ` Philippe Mathieu-Daudé
2020-10-03 10:03   ` Richard Henderson
2020-10-03 10:03     ` Richard Henderson
2020-10-03 10:14     ` Thomas Huth
2020-10-03 10:14       ` Thomas Huth
2020-10-03 10:37       ` Richard Henderson
2020-10-03 10:37         ` Richard Henderson
2020-09-30  7:58 ` [PATCH v4 00/12] Support disabling TCG on ARM (part 2) Igor Mammedov
2020-09-30  7:58   ` Igor Mammedov
2020-09-30 10:20   ` Philippe Mathieu-Daudé
2020-09-30 10:20     ` Philippe Mathieu-Daudé
2021-01-28  0:41 ` Alex Bennée
2021-01-28  0:41   ` Alex Bennée
2021-01-28 11:02   ` Philippe Mathieu-Daudé
2021-01-28 11:02     ` Philippe Mathieu-Daudé
2021-01-28 15:42     ` Alex Bennée
2021-01-28 15:42       ` Alex Bennée

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