Re: [Xen-devel] [PATCH] coverage: fix on ARM

[Keir Fraser <keir.xen@xxxxxxxxx>]

On 27/02/2013 13:17, "Ian Campbell" <Ian.Campbell@xxxxxxxxxx> wrote:

> On Fri, 2013-02-22 at 10:57 +0000, Ian Campbell wrote:
>> Use a list of pointers to simplify the handling of 32- vs 64-bit.
>> 
>> Also on ARM the section name is ".init_array" and not ".ctors".
> 
> Any comments/ack/nacks?

If it works, it's good by me ;)

 -- Keir

>> Signed-off-by: Ian Campbell <ian.campbell@xxxxxxxxxx>
>> Cc: Frediano Ziglio <frediano.ziglio@xxxxxxxxxx>
>> Cc: keir@xxxxxxx
>> ---
>> This applies independently of my 64-bit ARM series.
>> ---
>>  xen/arch/arm/xen.lds.S |   10 ++++------
>>  xen/arch/x86/xen.lds.S |    6 ++----
>>  xen/common/lib.c       |   13 +++++--------
>>  3 files changed, 11 insertions(+), 18 deletions(-)
>> 
>> diff --git a/xen/arch/arm/xen.lds.S b/xen/arch/arm/xen.lds.S
>> index 9043994..fd755d7 100644
>> --- a/xen/arch/arm/xen.lds.S
>> +++ b/xen/arch/arm/xen.lds.S
>> @@ -91,12 +91,10 @@ SECTIONS
>>         *(.init.data.rel)
>>         *(.init.data.rel.*)
>>  
>> -       . = ALIGN(4);
>> -       __CTOR_LIST__ = .;
>> -       LONG((__CTOR_END__ - __CTOR_LIST__) / 4 - 2)
>> -       *(.ctors)
>> -       LONG(0)
>> -       __CTOR_END__ = .;
>> +       . = ALIGN(8);
>> +       __ctors_start = .;
>> +       *(.init_array)
>> +       __ctors_end = .;
>>    } :text
>>    . = ALIGN(32);
>>    .init.setup : {
>> diff --git a/xen/arch/x86/xen.lds.S b/xen/arch/x86/xen.lds.S
>> index 5570389..d959941 100644
>> --- a/xen/arch/x86/xen.lds.S
>> +++ b/xen/arch/x86/xen.lds.S
>> @@ -110,11 +110,9 @@ SECTIONS
>>         __trampoline_seg_stop = .;
>>  
>>         . = ALIGN(8);
>> -       __CTOR_LIST__ = .;
>> -       QUAD((__CTOR_END__ - __CTOR_LIST__) / 8 - 2)
>> +       __ctors_start = .;
>>         *(.ctors)
>> -       QUAD(0)
>> -       __CTOR_END__ = .;
>> +       __ctors_end = .;
>>    } :text
>>    . = ALIGN(32);
>>    .init.setup : {
>> diff --git a/xen/common/lib.c b/xen/common/lib.c
>> index e0c65cf..6b80601 100644
>> --- a/xen/common/lib.c
>> +++ b/xen/common/lib.c
>> @@ -479,17 +479,14 @@ unsigned long long parse_size_and_unit(const char *s,
>> const char **ps)
>>      return ret;
>>  }
>>  
>> -extern const struct
>> -{
>> -    unsigned long count;
>> -    void (*funcs[1])(void);
>> -} __CTOR_LIST__;
>> +typedef void (*ctor_func_t)(void);
>> +extern const ctor_func_t __ctors_start[], __ctors_end[];
>>  
>>  void __init init_constructors(void)
>>  {
>> -    unsigned long n;
>> -    for ( n = 0; n < __CTOR_LIST__.count; ++n )
>> -        __CTOR_LIST__.funcs[n]();
>> +    const ctor_func_t *f;
>> +    for (f = __ctors_start; f < __ctors_end; ++f )
>> +        (*f)();
>>  }
>>  
>>  /*
> 
> 



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