1 files changed, 98 insertions, 0 deletions
diff --git a/sysdeps/aarch64/sysdep.h b/sysdeps/aarch64/sysdep.h
new file mode 100644
index 0000000000..7169ba716c
--- /dev/null
+++ b/sysdeps/aarch64/sysdep.h
@@ -0,0 +1,98 @@
+/* Copyright (C) 1997-2014 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
+   <http://www.gnu.org/licenses/>.  */
+
+#include <sysdeps/generic/sysdep.h>
+
+#ifdef	__ASSEMBLER__
+
+/* Syntactic details of assembler.  */
+
+#define ASM_SIZE_DIRECTIVE(name) .size name,.-name
+
+/* Define an entry point visible from C.  */
+#define ENTRY(name)						\
+  .globl C_SYMBOL_NAME(name);					\
+  .type C_SYMBOL_NAME(name),%function;				\
+  .align 4;							\
+  C_LABEL(name)							\
+  cfi_startproc;						\
+  CALL_MCOUNT
+
+/* Define an entry point visible from C.  */
+#define ENTRY_ALIGN(name, align)				\
+  .globl C_SYMBOL_NAME(name);					\
+  .type C_SYMBOL_NAME(name),%function;				\
+  .p2align align;						\
+  C_LABEL(name)							\
+  cfi_startproc;						\
+  CALL_MCOUNT
+
+/* Define an entry point visible from C with a specified alignment and
+   pre-padding with NOPs.  This can be used to ensure that a critical
+   loop within a function is cache line aligned.  Note this version
+   does not adjust the padding if CALL_MCOUNT is defined. */
+
+#define ENTRY_ALIGN_AND_PAD(name, align, padding)		\
+  .globl C_SYMBOL_NAME(name);					\
+  .type C_SYMBOL_NAME(name),%function;				\
+  .p2align align;						\
+  .rep padding;							\
+  nop;								\
+  .endr;							\
+  C_LABEL(name)							\
+  cfi_startproc;						\
+  CALL_MCOUNT
+
+#undef	END
+#define END(name)						\
+  cfi_endproc;							\
+  ASM_SIZE_DIRECTIVE(name)
+
+/* If compiled for profiling, call `mcount' at the start of each function.  */
+#ifdef	PROF
+# define CALL_MCOUNT						\
+	str	x30, [sp, #-16]!;				\
+	bl	mcount;						\
+	ldr	x30, [sp], #16	;
+#else
+# define CALL_MCOUNT		/* Do nothing.  */
+#endif
+
+/* Local label name for asm code.  */
+#ifndef L
+# define L(name)         .L##name
+#endif
+
+/* Load or store to/from a pc-relative EXPR into/from R, using T.  */
+#define LDST_PCREL(OP, R, T, EXPR)  \
+	adrp	T, EXPR;	    \
+	OP	R, [T, #:lo12:EXPR];\
+
+/* Load or store to/from a got-relative EXPR into/from R, using T.  */
+#define LDST_GLOBAL(OP, R, T, EXPR)     \
+	adrp	T, :got:EXPR;		\
+	ldr	T, [T, #:got_lo12:EXPR];\
+	OP	R, [T];
+
+/* Since C identifiers are not normally prefixed with an underscore
+   on this system, the asm identifier `syscall_error' intrudes on the
+   C name space.  Make sure we use an innocuous name.  */
+#define syscall_error	__syscall_error
+#define mcount		_mcount
+
+#endif	/* __ASSEMBLER__ */