This patch adjusts the initialization of __sync built-in functions:
instead of conditionalizing on TARGET_LINUX_ABI, directly place the
target-hook #define in config/nios2/linux.h. This appears to be in line
with other similar ports, e.g. m68k.
Sebastian, this should solve your issue of not wanting __sync_* libcalls
generated on RTEMS (which also uses TARGET_LINUX_ABI due to TLS support),
can you verify it works for you?
Chung-Lin
PR target/78357
* config/nios2/nios2.c (nios2_init_libfuncs): Remove TARGET_LINUX_ABI
condition.
(TARGET_INIT_LIBFUNCS): Delete definition and...
* config/nios2/linux.h (TARGET_INIT_LIBFUNCS): ...move to here, add
comments.
Index: config/nios2/nios2.c
===================================================================
--- config/nios2/nios2.c (revision 242468)
+++ config/nios2/nios2.c (working copy)
@@ -3607,9 +3607,7 @@ nios2_expand_builtin (tree exp, rtx target, rtx su
static void
nios2_init_libfuncs (void)
{
- /* For Linux, we have access to kernel support for atomic operations. */
- if (TARGET_LINUX_ABI)
- init_sync_libfuncs (UNITS_PER_WORD);
+ init_sync_libfuncs (UNITS_PER_WORD);
}
@@ -4986,9 +4984,6 @@ nios2_adjust_reg_alloc_order (void)
#undef TARGET_BUILTIN_DECL
#define TARGET_BUILTIN_DECL nios2_builtin_decl
-#undef TARGET_INIT_LIBFUNCS
-#define TARGET_INIT_LIBFUNCS nios2_init_libfuncs
-
#undef TARGET_FUNCTION_OK_FOR_SIBCALL
#define TARGET_FUNCTION_OK_FOR_SIBCALL hook_bool_tree_tree_true
Index: config/nios2/linux.h
===================================================================
--- config/nios2/linux.h (revision 242468)
+++ config/nios2/linux.h (working copy)
@@ -44,3 +44,7 @@
Nios II Processor Reference Handbook. */
#define TARGET_LINUX_ABI 1
+/* For Linux, we have access to kernel support for atomic operations,
+ add initialization for __sync_* builtins. */
+#undef TARGET_INIT_LIBFUNCS
+#define TARGET_INIT_LIBFUNCS nios2_init_libfuncs
