[FFmpeg-devel] Hacks on FATE

[Baptiste Coudurier]

On 09/24/2009 03:17 PM, M?ns Rullg?rd wrote:
> Baptiste Coudurier<baptiste.coudurier at gmail.com>  writes:
>
>> Hi,
>>
>> On 09/24/2009 12:42 PM, Michael Kostylev wrote:
>>> [...]
>>>
>>> On i386 (HAVE_7REGS&&   HAVE_TEN_OPERANDS) may be equal to zero
>>> (for example, on my machine %ebp is not available), then
>>
>> Speaking of ebp, configure check does not work with gcc 4.4 and
>> therefore EBP is disabled. Considering gcc 4.4 will be the default
>> compiler in ubuntu karmic, it may be nice to fix this in some way.
>
> What exactly is the problem?
>

BEGIN /tmp/ffconf.2ssDOnLc.c
     1   #include <signal.h>
     2   static void sighandler(int sig){
     3       raise(SIGTERM);
     4   }
     5   int main(void){
     6       signal(SIGILL, sighandler);
     7       signal(SIGFPE, sighandler);
     8       signal(SIGSEGV, sighandler);
     9   #ifdef SIGBUS
    10       signal(SIGBUS, sighandler);
    11   #endif
    12       {     volatile int i=0;
    13       __asm__ volatile (
    14           "xorl %%ebp, %%ebp"
    15       ::: "%ebp");
    16       return i; }
    17   }
END /tmp/ffconf.2ssDOnLc.c
gcc -D_ISOC99_SOURCE -D_POSIX_C_SOURCE=200112 -D_FILE_OFFSET_BITS=64 
-D_LARGEFILE_SOURCE -std=c99 -fomit-frame-pointer -c -o 
/tmp/ffconf.DBb5ytLJ.o /tmp/ffconf.2ssDOnLc.c
/tmp/ffconf.2ssDOnLc.c: In function 'main':
/tmp/ffconf.2ssDOnLc.c:17: error: bp cannot be used in asm here

Is this information sufficient ?

-- 
Baptiste COUDURIER
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