Initial revision

svn-id: r3408

1 files changed, 152 insertions, 0 deletions

diff --git a/scummsys.h b/scummsys.h
new file mode 100644
index 0000000000..ae91e1e3e5
--- /dev/null
+++ b/scummsys.h
@@ -0,0 +1,152 @@
+/* ScummVM - Scumm Interpreter
+ * Copyright (C) 2001  Ludvig Strigeus
+ *
+ * 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 2
+ * 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, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
+ *
+ * Change Log:
+ * $Log$
+ * Revision 1.1  2001/10/09 14:30:14  strigeus
+ * Initial revision
+ *
+ *
+ */
+
+#if defined(WIN32)
+
+#define SCUMM_LITTLE_ENDIAN
+
+#define FORCEINLINE __forceinline
+#define NORETURN _declspec(noreturn)
+
+typedef unsigned char byte;
+typedef unsigned char uint8;
+typedef unsigned short uint16;
+typedef unsigned long uint32;
+typedef unsigned int uint;
+typedef signed char int8;
+typedef signed short int16;
+typedef signed long int32;
+
+#define START_PACK_STRUCTS pack (push,1)
+#define END_PACK_STRUCTS   pack(pop)
+
+#elif defined(UNIX)
+
+#define FORCEINLINE inline
+#define NORETURN 
+#define CDECL 
+
+typedef unsigned char byte;
+typedef unsigned char uint8;
+typedef unsigned short uint16;
+typedef unsigned long uint32;
+typedef unsigned int uint;
+typedef signed char int8;
+typedef signed short int16;
+typedef signed long int32;
+
+#define START_PACK_STRUCTS pack (1)
+#define END_PACK_STRUCTS   pack ()
+
+#else
+#error No system type defined
+#endif
+
+
+#if defined(SCUMM_LITTLE_ENDIAN)
+
+#if defined(SCUMM_NEED_ALIGNMENT)
+#error Little endian processors that need alignment is not implemented
+#endif
+
+#define MKID(a) ((((a)>>24)&0xFF) | (((a)>>8)&0xFF00) | (((a)<<8)&0xFF0000) | (((a)<<24)&0xFF000000))
+
+int FORCEINLINE READ_LE_UINT16(void *ptr) {
+	return *(uint16*)(ptr);
+}
+
+int FORCEINLINE READ_BE_UINT16(void *ptr) {
+	return (((byte*)ptr)[0]<<8)|((byte*)ptr)[1];
+}
+
+uint32 FORCEINLINE READ_LE_UINT32(void *ptr) {
+	return *(uint32*)(ptr);
+}
+
+uint32 FORCEINLINE READ_BE_UINT32(void *ptr) {
+	byte *b = (byte*)ptr;
+	return (b[0]<<24)+(b[1]<<16)+(b[2]<<8)+(b[3]);
+}
+
+#define READ_BE_UINT32_UNALIGNED READ_BE_UINT32
+#define READ_BE_UINT16_UNALIGNED READ_BE_UINT16
+
+#define READ_UINT32_UNALIGNED(a) (*((uint32*)a))
+
+#define FROM_LE_32(__a__) __a__
+#define FROM_LE_16(__a__) __a__
+
+#define TO_BE_32(a) ((((a)>>24)&0xFF) | (((a)>>8)&0xFF00) | (((a)<<8)&0xFF0000) | (((a)<<24)&0xFF000000))
+
+#elif defined(SCUMM_BIG_ENDIAN)
+
+#define MKID(a) (a)
+
+uint32 FORCEINLINE FROM_LE_32(uint32 a) {
+	return ((a>>24)&0xFF) + ((a>>8)&0xFF00) + ((a<<8)&0xFF0000) + ((a<<24)&0xFF000000);
+}
+
+uint16 FORCEINLINE FROM_LE_16(uint16 a) {
+	return ((a>>8)&0xFF) + ((a<<8)&0xFF00);
+}
+
+uint32 FORCEINLINE READ_LE_UINT32(void *ptr) {
+	byte *b = (byte*)ptr;
+	return (b[3]<<24)+(b[2]<<16)+(b[1]<<8)+(b[0]);
+}
+
+uint32 FORCEINLINE READ_BE_UINT32(void *ptr) {
+	return *(uint32*)(ptr);
+}
+
+int FORCEINLINE READ_LE_UINT16(void *ptr) {
+	byte *b = (byte*)ptr;
+	return (b[1]<<8) + b[0];
+}
+
+int FORCEINLINE READ_BE_UINT16(void *ptr) {
+	return *(uint16*)(ptr);
+}
+
+int FORCEINLINE READ_BE_UINT16_UNALIGNED(void *ptr) {
+	return (((byte*)ptr)[0]<<8)|((byte*)ptr)[1];
+}
+
+
+uint32 FORCEINLINE READ_BE_UINT32_UNALIGNED(void *ptr) {
+	byte *b = (byte*)ptr;
+	return (b[0]<<24)+(b[1]<<16)+(b[2]<<8)+(b[3]);
+}
+
+#define READ_UINT32_UNALIGNED READ_BE_UINT32_UNALIGNED
+
+#define TO_BE_32(a) (a)
+
+#else
+
+#error No endianness defined
+
+#endif
+