Re: [Qemu-devel] [PATCH qom-cpu v2 25/29] cpu: Move CPU_INTERRUPT_* to qom/cpu.h

["Andreas Färber" <afaerber@suse.de>]

Am 17.06.2013 22:59, schrieb Richard Henderson:
> On 06/16/2013 08:57 AM, Andreas Färber wrote:
>> +enum CPUInterruptFlags {
>> +    CPU_INTERRUPT_HARD      = 0x0002,
>> +    CPU_INTERRUPT_EXITTB    = 0x0004,
>> +    CPU_INTERRUPT_HALT      = 0x0020,
>> +    CPU_INTERRUPT_DEBUG     = 0x0080,
>> +
>> +#if defined(CONFIG_SOFTMMU) || defined(CONFIG_USER_ONLY)
>> +    /* Several target-specific external hardware interrupts.
>> +     * Each target/cpu.h should define proper names based on them.
>> +     */
>> +    CPU_INTERRUPT_TGT_EXT_0 = 0x0008,
>> +    CPU_INTERRUPT_TGT_EXT_1 = 0x0010,
>> +    CPU_INTERRUPT_TGT_EXT_2 = 0x0040,
>> +    CPU_INTERRUPT_TGT_EXT_3 = 0x0200,
>> +    CPU_INTERRUPT_TGT_EXT_4 = 0x1000,
> 
> I don't like this.  It's a subtle point between C and C++ that the later can
> change the implementation type of the enum based on the contents of the enum.
> While we don't currently ever build with C++, I'd rather not have something
> like this hiding.
> 
> Is the ifdef really better than the poison?

With today's poison we can't use it in qom/cpu.c nor intc/sh_intc.c.

Andreas

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