nios2: add declaration for __builtin_{rd,wr}ctl()

These 2 are used for the kernel and the lack of a
declaration is causing problems.

So add the declarations for these 2 builtins.
At the same time also add one for '__builtin_custom_ini()'
since this one may also be used in the kernel.

Note: a better fix should be to move this to target-nios2.c

Link: https://lore.kernel.org/lkml/20200609151329.GU23011@xsang-OptiPlex-9020/
Reported-by: kbuild test robot <lkp@intel.com>
Signed-off-by: Luc Van Oostenryck <luc.vanoostenryck@gmail.com>

1 files changed, 5 insertions, 0 deletions

diff --git a/builtin.c b/builtin.c
index debc22c0..5ed17700 100644
--- a/builtin.c
+++ b/builtin.c
@@ -613,4 +613,9 @@ void declare_builtins(void)
 	declare_builtin("__builtin_bfin_csync", &void_ctype, 0, NULL);
 	declare_builtin("__builtin_bfin_ssync", &void_ctype, 0, NULL);
 	declare_builtin("__builtin_bfin_norm_fr1x32", &int_ctype, 0, &int_ctype, NULL);
+
+	// Nios-II-specific
+	declare_builtin("__builtin_rdctl", &int_ctype, 0, &int_ctype, NULL);
+	declare_builtin("__builtin_wrctl", &void_ctype, 0, &int_ctype, &int_ctype, NULL);
+	declare_builtin("__builtin_custom_ini", &int_ctype, 0, &int_ctype, NULL);
 }