#2443 SPARC is not recognized as 64bit CPU

[Petr Sumbera]

SPARC should be recognized as a 64-bit CPU. Nothing seems to break with or without this patch.

[Igor Pavlov]

if sparc-v9 supports __ILP32__ then we need more complicated code:

#if  defined(__sparc__) 
  #define MY_CPU_SPARC
  #if defined(__sparcv9)
    #define MY_CPU_64BIT
  #ifdef __ILP32__
    #define MY_CPU_NAME "sparcv9-32"
    #define MY_CPU_SIZEOF_POINTER 4
  #else
    #define MY_CPU_NAME "sparcv9"
    #define MY_CPU_SIZEOF_POINTER 8
  #endif
  #else
    #define MY_CPU_NAME "sparc"
    #define MY_CPU_SIZEOF_POINTER 4
  #endif
#endif

[Petr Sumbera]

No, __sparcv9 means it's just 64 bits. We can eventually use __LP64__ instead of __sparcv9.

[Igor Pavlov]

Problem case is __ILP32__.
where pointers are 32-bit, but registers can be 64-bit still and we can have all other new isa features.
So the question is: does sparc systems/compilers support __ILP32__ for sparc-v9?

[mik]

% sparc-linux-cpp -m32 -dM /dev/null | egrep -i '(sparc|lp)'
#define sparc 1
#define __sparc__ 1
#define __sparc 1
#define __sparc_v8__ 1
% sparc-linux-cpp -m32 -mcpu=ultrasparc -dM /dev/null | egrep -i '(sparc|lp)'
#define sparc 1
#define __sparc__ 1
#define __sparc 1
#define __sparc_v9__ 1
% sparc-linux-cpp -m64 -dM /dev/null | egrep -i '(sparc|lp)'
#define sparc 1
#define __sparc__ 1
#define __LP64__ 1
#define __sparc 1
#define _LP64 1

[Igor Pavlov]

#if   defined(__sparc__) \
   || defined(__sparc) 
  #define MY_CPU_SPARC
  #if  defined(__LP64__) \
    || defined(_LP64) \
    || defined(__SIZEOF_POINTER__) && (__SIZEOF_POINTER__ == 8)
    #define MY_CPU_NAME "sparcv9"
    #define MY_CPU_SIZEOF_POINTER 8
    #define MY_CPU_64BIT
  #elif defined(__sparc_v9__) \
     || defined(__sparcv9)
    #define MY_CPU_64BIT
    #if defined(__SIZEOF_POINTER__) && (__SIZEOF_POINTER__ == 4)
      #define MY_CPU_NAME "sparcv9-32"
    #else
      #define MY_CPU_NAME "sparcv9m"
    #endif
  #elif defined(__sparc_v8__) \
     || defined(__sparcv8)
    #define MY_CPU_NAME "sparcv8"
    #define MY_CPU_SIZEOF_POINTER 4
  #else
    #define MY_CPU_NAME "sparc"
  #endif
#endif

[Petr Sumbera]

Just for record what I get for latest Solaris. But anyway these days only 64bits matter.

$ echo | gcc -m32 -dM -E -| egrep -i '(sparc|lp|__SIZEOF_POINTER__)'
#define sparc 1
#define __sparc__ 1
#define __SIZEOF_POINTER__ 4
#define __sparc 1
$ echo | gcc -m32 -mcpu=ultrasparc -dM -E -| egrep -i '(sparc|lp|__SIZEOF_POINTER__)'
#define sparc 1
#define __sparcv8 1
#define __sparc__ 1
#define __SIZEOF_POINTER__ 4
#define __sparc 1
$ echo | gcc -m64 -mcpu=ultrasparc -dM -E -| egrep -i '(sparc|lp|__SIZEOF_POINTER__)'
#define sparc 1
#define __sparc__ 1
#define __SIZEOF_POINTER__ 8
#define __LP64__ 1
#define __sparcv9 1
#define __sparc 1
#define _LP64 1