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backends/platform/atari/symbols.h

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+/* ScummVM - Graphic Adventure Engine
+ *
+ * ScummVM is the legal property of its developers, whose names
+ * are too numerous to list here. Please refer to the COPYRIGHT
+ * file distributed with this source distribution.
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program 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 General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+// Atari a.out / ELF symbol handling by Thorsten Otto.
+// include in each of the .S files and put every global symbol into
+// SYM(<symbol name>).
+
+#ifndef __USER_LABEL_PREFIX__
+#define __USER_LABEL_PREFIX__ _
+#endif
+
+#ifndef __REGISTER_PREFIX__
+#define __REGISTER_PREFIX__
+#endif
+
+#ifndef __IMMEDIATE_PREFIX__
+#define __IMMEDIATE_PREFIX__ #
+#endif
+
+#define CONCAT1(a, b) CONCAT2(a, b)
+#define CONCAT2(a, b) a ## b
+
+/* Use the right prefix for global labels.  */
+
+#define SYM(x) CONCAT1 (__USER_LABEL_PREFIX__, x)
+
+#ifdef __ELF__
+#define FUNC(x) .type SYM(x),function
+#else
+/* The .proc pseudo-op is accepted, but ignored, by GAS.  We could just	
+   define this to the empty string for non-ELF systems, but defining it
+   to .proc means that the information is available to the assembler if
+   the need arises.  */
+#define FUNC(x) .proc
+#endif
+		
+#define REG(x) CONCAT1 (__REGISTER_PREFIX__, x)
+
+#define IMM(x) CONCAT1 (__IMMEDIATE_PREFIX__, x)
+
+#define d0 REG(d0)
+#define d1 REG(d1)
+#define d2 REG(d2)
+#define d3 REG(d3)
+#define d4 REG(d4)
+#define d5 REG(d5)
+#define d6 REG(d6)
+#define d7 REG(d7)
+#define a0 REG(a0)
+#define a1 REG(a1)
+#define a2 REG(a2)
+#define a3 REG(a3)
+#define a4 REG(a4)
+#define a5 REG(a5)
+#define a6 REG(a6)
+#define a7 REG(a7)
+#define fp REG(fp)
+#define sp REG(sp)
+#define pc REG(pc)
+
+#define sr REG(sr)