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-rw-r--r--ports/sysdeps/m68k/coldfire/sysdep.h40
1 files changed, 40 insertions, 0 deletions
diff --git a/ports/sysdeps/m68k/coldfire/sysdep.h b/ports/sysdeps/m68k/coldfire/sysdep.h
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+++ b/ports/sysdeps/m68k/coldfire/sysdep.h
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+/* Assembler macros for Coldfire.
+   Copyright (C) 1998, 2003, 2010, 2012 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/m68k/sysdep.h>
+
+#ifdef __ASSEMBLER__
+
+/* Perform operation OP with PC-relative SRC as the first operand and
+   DST as the second.  TMP is available as a temporary if needed.  */
+# define PCREL_OP(OP, SRC, DST, TMP) \
+  move.l &SRC - ., TMP; OP (-8, %pc, TMP), DST
+
+/* Load the address of the GOT into register R.  */
+# define LOAD_GOT(R) \
+  move.l &_GLOBAL_OFFSET_TABLE_@GOTPC, R; \
+  lea (-6, %pc, R), R
+
+#else
+
+/* As above, but PC is the spelling of the PC register.  We need this
+   so that the macro can be used in both normal and extended asms.  */
+# define PCREL_OP(OP, SRC, DST, TMP, PC) \
+  "move.l #" SRC " - ., " TMP "\n\t" OP " (-8, " PC ", " TMP "), " DST
+
+#endif	/* __ASSEMBLER__ */