[Cbe-oss-dev] [PATCH] libspe: add posix_memalign_ea

[D. Herrendoerfer]

Added to svn,

regards,

D.Herrendoerfer

On Fri, 2008-04-18 at 04:05 +0900, Kazunori Asayama wrote:
> Dirk Herrendoerfer wrote:
> > Add support for posix_memalign_ea.
> > 
> > This is on the SPU, since we often want 8 byte alignments, but malloc_ea
> > gives 4 byte alignment.
> > 
> > Signed-off-by: Dirk Herrendoerfer < d.herrendoerfer at de.ibm.com >
> 
> Looks good.
> 
> 
> > 
> > Index: quilt-libspe2/spebase/default_libea_handler.c
> > ===================================================================
> > --- quilt-libspe2.orig/spebase/default_libea_handler.c
> > +++ quilt-libspe2/spebase/default_libea_handler.c
> > @@ -167,12 +167,49 @@ static int default_libea_handler_realloc
> > 
> >  }
> > 
> > +/**
> > + * default_libea_handler_posix_memalign
> > + * @ls: base pointer to local store area.
> > + * @opdata: LIBEA call opcode & data.
> > + *
> > + * LIBEA library operation, implement:
> > + *
> > + *          int posix_memalign(void **memptr, size_t alignment, size_t
> > size);
> > + *
> > + * memptr is an LS pointer that points to an EA pointer, so *memptr is 32
> > + * or 64 bits long.
> > + */
> > +static int default_libea_handler_posix_memalign(char *ls, unsigned long
> > opdata)
> > +{
> > +  DECL_3_ARGS();
> > +  DECL_RET();
> > +  size_t size, alignment;
> > +  void **memptr;
> > +  int rc;
> > +
> > +  memptr = GET_LS_PTR(arg0->slot[0]);
> > +  alignment = arg64_to_size_t(arg1);
> > +  size = arg64_to_size_t(arg2);
> > +
> > +  if(arg2->slot[0] == 0 || sizeof(size) == 8)
> > +    rc = posix_memalign(memptr, alignment, size);
> > +  else
> > +    /*
> > +     * Yes, rc and not errno since posix_memalign never sets errno.
> > +     */
> > +    rc = ENOMEM;
> > +
> > +  PUT_LS_RC(rc, 0, 0, 0);
> > +  return 0;
> > +}
> > +
> >  static int (*default_libea_funcs[SPE_LIBEA_NR_OPCODES]) (char *, unsigned
> > long) = {
> >              [SPE_LIBEA_UNUSED]                        = NULL,
> >              [SPE_LIBEA_CALLOC]                        =
> > default_libea_handler_calloc,
> >              [SPE_LIBEA_FREE]                    =
> > default_libea_handler_free,
> >              [SPE_LIBEA_MALLOC]                        =
> > default_libea_handler_malloc,
> >              [SPE_LIBEA_REALLOC]                       =
> > default_libea_handler_realloc,
> > +            [SPE_LIBEA_POSIX_MEMALIGN]          =
> > default_libea_handler_posix_memalign,
> >  };
> > 
> >  /**
> > Index: quilt-libspe2/spebase/default_libea_handler.h
> > ===================================================================
> > --- quilt-libspe2.orig/spebase/default_libea_handler.h
> > +++ quilt-libspe2/spebase/default_libea_handler.h
> > @@ -6,7 +6,8 @@
> >  #define SPE_LIBEA_FREE         0x02
> >  #define SPE_LIBEA_MALLOC       0x03
> >  #define SPE_LIBEA_REALLOC      0x04
> > -#define SPE_LIBEA_NR_OPCODES   0x05
> > +#define SPE_LIBEA_POSIX_MEMALIGN   0x05
> > +#define SPE_LIBEA_NR_OPCODES   0x06
> > 
> >  extern int _base_spe_default_libea_handler(char *ls, unsigned long args);
> > 
> > 
>