Re: "Decompressor is too big" building i386-pc image on Cygwin

[Andrey Borzenkov]

On Mon, Dec 23, 2013 at 6:00 PM, Vladimir 'φ-coder/phcoder' Serbinenko
<address@hidden> wrote:
> On 23.12.2013 13:42, Andrey Borzenkov wrote:
>> address@hidden ~/grub-2.02~beta1
>> $ ./grub-mkimage -d grub-core -O i386-pc -o grub.img
>> ./grub-mkimage: error: Decompressor is too big.
>>
>> address@hidden ~/grub-2.02~beta1
>> $ ls -l grub-core/*_decompress.img
>> -rwxr-xr-x 1 bor None 3604 Dec 23 15:53 grub-core/lzma_decompress.img
>>
>> address@hidden ~/grub-2.02~beta1
>> $
>>
>> Well, 3604 is indeed more than size it checks (0x9000 - 0x8200 ==
>> 3584). As I definitely can use beta1 on Linux for the same platform,
>> it looks like Cygwin related?
>>
>
> It has a .rdata section with following contents:
> Contents of section .rdata:
>  9000 4743433a 2028474e 55292034 2e382e32  GCC: (GNU) 4.8.2
>  9010 00000000
> We'll need to find an option to inhibit this

Even if I manually remove .ident "GCC: (GNU) 4.8.2" from generated
assembly file file, it still generates empty .idata section:

address@hidden ~/grub-2.02~beta1
$ objdump -h grub-core/lzma_decompress.image.exe

grub-core/lzma_decompress.image.exe:     file format pei-i386

Sections:
Idx Name          Size      VMA       LMA       File off  Algn
  0 .text         00000b30  00008200  00008200  000001e0  2**5
                  CONTENTS, ALLOC, LOAD, CODE
  1 .idata        00000014  00009000  00009000  00000de0  2**2
                  CONTENTS, ALLOC, LOAD, DATA

address@hidden ~/grub-2.02~beta1
$ objdump -s -j .idata grub-core/lzma_decompress.image.exe

grub-core/lzma_decompress.image.exe:     file format pei-i386

Contents of section .idata:
 9000 00000000 00000000 00000000 00000000  ................
 9010 00000000                             ....

address@hidden ~/grub-2.02~beta1