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Re: multiboot2.h & multiboot_header_tag_module_align


From: Toomas Soome
Subject: Re: multiboot2.h & multiboot_header_tag_module_align
Date: Thu, 04 Jun 2015 19:29:17 +0300

> On 04.06.2015, at 19:19, Andrei Borzenkov <address@hidden> wrote:
> 
> В Thu, 04 Jun 2015 19:04:46 +0300
> Toomas Soome <address@hidden> пишет:
> 
>> 
>>> On 04.06.2015, at 18:31, Vladimir 'φ-coder/phcoder' Serbinenko 
>>> <address@hidden> wrote:
>>> 
>>> On 04.06.2015 14:18, Toomas Soome wrote:
>>>> hi!
>>>> 
>>>> i know this tag (multiboot_header_tag_module_align) is not really used, 
>>>> but it still would be nice if the copy/paste error of the actual structure 
>>>> would be fixed;)
>>>> 
>>> Can you propose a patch?
>>>> rgds,
>> 
>> as its header tag, i think following should be it; header tags have 16bit 
>> ints for type and flags, 32bit size and based on name, this tag is to 
>> request bootloader to use specified alignment, so the data field should be 
>> 32bit uint as well (default MULTIBOOT_MOD_ALIGN is 0x00001000).
>> 
>> diff --git a/include/multiboot2.h b/include/multiboot2.h
>> index 3ccff15..e3064da 100644
>> --- a/include/multiboot2.h
>> +++ b/include/multiboot2.h
>> @@ -156,9 +156,7 @@ struct multiboot_header_tag_module_align
>>   multiboot_uint16_t type;
>>   multiboot_uint16_t flags;
>>   multiboot_uint32_t size;
>> -  multiboot_uint32_t width;
>> -  multiboot_uint32_t height;
>> -  multiboot_uint32_t depth;
>> +  multiboot_uint32_t align;
> What about consulting multiboot2 specification? :)


oh right, for some reason i missed the actual specification and was stumbling 
on link to this broken header;)

this is of course the correct one 
(http://nongnu.askapache.com/grub/phcoder/multiboot.pdf 3.1.9 If this tag is 
present modules must be page aligned):

diff --git a/include/multiboot2.h b/include/multiboot2.h
index 3ccff15..9d48627 100644
--- a/include/multiboot2.h
+++ b/include/multiboot2.h
@@ -156,9 +156,6 @@ struct multiboot_header_tag_module_align
   multiboot_uint16_t type;
   multiboot_uint16_t flags;
   multiboot_uint32_t size;
-  multiboot_uint32_t width;
-  multiboot_uint32_t height;
-  multiboot_uint32_t depth;
 };
 
 struct multiboot_color










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