[Qemu-devel] Re: [5998] Fix TARGET_LONG_BITS warning in TCG

[Jan Kiszka <jan.kiszka@web.de>]

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Blue Swirl wrote:
> On 12/13/08, Jan Kiszka <jan.kiszka@web.de> wrote:
>> Blue Swirl wrote:
>>  > Revision: 5998
>>  >           http://svn.sv.gnu.org/viewvc/?view=rev&root=qemu&revision=5998
>>  > Author:   blueswir1
>>  > Date:     2008-12-13 08:16:43 +0000 (Sat, 13 Dec 2008)
>>  >
>>  > Log Message:
>>  > -----------
>>  > Fix TARGET_LONG_BITS warning in TCG
>>  >
>>  > Looking at tcg/tcg.c:828, the bug that the warning indicated would show up as
>>  > incorrect PC shown in log, only on 32 bit big endian host emulating a 64 bit
>>  > target, -d op flag enabled. Now that dyngen is gone, the patch can be applied.
>>  >
>>  > Modified Paths:
>>  > --------------
>>  >     trunk/tcg/tcg-runtime.c
>>  >
>>  > Modified: trunk/tcg/tcg-runtime.c
>>  > ===================================================================
>>  > --- trunk/tcg/tcg-runtime.c   2008-12-12 20:02:52 UTC (rev 5997)
>>  > +++ trunk/tcg/tcg-runtime.c   2008-12-13 08:16:43 UTC (rev 5998)
>>  > @@ -29,6 +29,7 @@
>>  >
>>  >  #include "config.h"
>>  >  #include "osdep.h"
>>  > +#include "cpu.h" // For TARGET_LONG_BITS
>>  >  #include "tcg.h"
>>  >
>>  >  int64_t tcg_helper_shl_i64(int64_t arg1, int64_t arg2)
>>  >
>>
>>
>> Nice that this warning is finally fixed - but what is the point of
>>  including all those headers at all here? [1] worked well for me while
>>  reducing dependencies.
> 
> I think all header files should be checked and even reorganized when
> necessary. One item is the dyngen removal, cpu.h/exec.h distinction is
> not clear for all targets and headers used by both user and system
> emulators could be adjusted. Header files in hw should be OK, but
> worth checking.

Header dependencies and usage policies should be rechecked and probably
cleaned up now, no question (see also my dyngen-exec.h problems).

But here I was referring to the need of this _particular_ C file for any
header except inttypes.h. Why including headers _here_ for no use?

Jan


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