ARC: ABI Implementation

This code deals with the ARC ABI.

Reviewed-by: Adhemerval Zanella  <adhemerval.zanella@linaro.org>

1 files changed, 53 insertions, 0 deletions

diff --git a/sysdeps/arc/sysdep.h b/sysdeps/arc/sysdep.h
new file mode 100644
index 0000000..9ac295b
--- /dev/null
+++ b/sysdeps/arc/sysdep.h
@@ -0,0 +1,53 @@
+/* Assembler macros for ARC.
+   Copyright (C) 2020 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <https://www.gnu.org/licenses/>.  */
+
+#include <sysdeps/generic/sysdep.h>
+
+#ifdef	__ASSEMBLER__
+
+/* Syntactic details of assembler.
+   ; is not newline but comment, # is also for comment.  */
+# define ASM_SIZE_DIRECTIVE(name) .size name,.-name
+
+# define ENTRY(name)						\
+	.align 4				ASM_LINE_SEP	\
+	.globl C_SYMBOL_NAME(name)		ASM_LINE_SEP	\
+	.type C_SYMBOL_NAME(name),%function	ASM_LINE_SEP	\
+	C_LABEL(name)				ASM_LINE_SEP	\
+	cfi_startproc				ASM_LINE_SEP	\
+	CALL_MCOUNT
+
+# undef  END
+# define END(name)						\
+	cfi_endproc				ASM_LINE_SEP	\
+	ASM_SIZE_DIRECTIVE(name)
+
+# ifdef SHARED
+#  define PLTJMP(_x)	_x##@plt
+# else
+#  define PLTJMP(_x)	_x
+# endif
+
+# define L(label) .L##label
+
+# define CALL_MCOUNT		/* Do nothing for now.  */
+
+# define STR(reg, rbase, off)	st  reg, [rbase, off * 4]
+# define LDR(reg, rbase, off)	ld  reg, [rbase, off * 4]
+
+#endif	/* __ASSEMBLER__ */