In case the LEON3FT back-to-back store workaround is active (sparc_fix_b2bst), then define the builtin define __FIX_LEON3FT_B2BST on RTEMS. The intended use case for this is operating system code in assembly language. See also:
https://lists.rtems.org/pipermail/devel/2017-July/018463.html gcc/ * gcc/config/sparc/rtemself.h (TARGET_OS_CPP_BUILTINS): Add conditional builtin define __FIX_LEON3FT_B2BST. --- gcc/config/sparc/rtemself.h | 2 ++ 1 file changed, 2 insertions(+) diff --git a/gcc/config/sparc/rtemself.h b/gcc/config/sparc/rtemself.h index e5a3f6eae03..10eaa08fe4e 100644 --- a/gcc/config/sparc/rtemself.h +++ b/gcc/config/sparc/rtemself.h @@ -26,6 +26,8 @@ along with GCC; see the file COPYING3. If not see builtin_define ("__rtems__"); \ builtin_define ("__USE_INIT_FINI__"); \ builtin_assert ("system=rtems"); \ + if (sparc_fix_b2bst) \ + builtin_define ("__FIX_LEON3FT_B2BST"); \ } \ while (0) -- 2.12.3
