Initial revision

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@22299 138bc75d-0d04-0410-961f-82ee72b054a4

1 files changed, 142 insertions, 0 deletions

diff --git a/gcc/java/javaop.h b/gcc/java/javaop.h
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+/* Utility macros to handle Java(TM) byte codes.
+
+   Copyright (C) 1996  Free Software Foundation, Inc.
+
+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, 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 GNU CC; see the file COPYING.  If not, write to
+the Free Software Foundation, 59 Temple Place - Suite 330,
+Boston, MA 02111-1307, USA.  
+
+Java and all Java-based marks are trademarks or registered trademarks
+of Sun Microsystems, Inc. in the United States and other countries.
+The Free Software Foundation is independent of Sun Microsystems, Inc.  */
+
+/* Written by Per Bothner <bothner@cygnus.com>, February 1996. */
+
+#ifndef JAVAOP_H
+#define JAVAOP_H
+
+typedef	char		int8;
+typedef	unsigned char	uint8;
+#ifndef int16
+#define int16 short
+#endif
+typedef unsigned int16	uint16;
+
+#ifndef int32
+#define int32 long
+#endif
+typedef unsigned int32	uint32;
+
+/* A signed 64-bit (or more) integral type, suiteable for Java's 'long'. */
+#ifndef int64
+#define int64 long long
+#endif
+/* An unsigned 64-bit (or more) integral type, same length as int64. */
+#ifndef uint64
+#define uint64 unsigned int64
+#endif
+
+typedef uint16			jchar;
+typedef int8			jbyte;
+typedef int16                   jshort;
+typedef int32                   jint;
+typedef int64                   jlong;
+typedef void*                   jref;
+
+/* A 32-bit IEEE single-precision float. */
+#ifndef jfloat 
+#define jfloat float
+#endif
+
+/* A 32-bit IEEE double-precision float. */
+#ifndef jdouble
+#define jdouble double
+#endif
+
+union Word {
+  jint i;
+  jfloat f;
+  void *p;
+};
+
+/* A jword is an unsigned integral type big enough for a 32-bit jint
+   or jfloat *or* a pointer.  It is the type appropriate for stack
+   locations and local variables in a Java interpreter. */
+
+
+#ifndef jword
+#define jword uint32
+#endif
+
+#if !defined(inline) && !defined(__GC__) && !defined(__cplusplus)
+#define inline static
+#endif
+
+#ifndef IMMEDIATE_u1
+#define IMMEDIATE_u1 (PC++, CHECK_PC_IN_RANGE(PC), BCODE[PC-1])
+#endif
+#ifndef IMMEDIATE_s1
+#define IMMEDIATE_s1 (PC++, CHECK_PC_IN_RANGE(PC), (signed char)BCODE[PC-1])
+#endif
+#ifndef IMMEDIATE_s2
+#define IMMEDIATE_s2 (PC+=2, CHECK_PC_IN_RANGE(PC), \
+  (signed char) BCODE[PC-2] * 256 + BCODE[PC-1])
+#endif
+#ifndef IMMEDIATE_u2
+#define IMMEDIATE_u2 (PC+=2, CHECK_PC_IN_RANGE(PC),\
+  (BCODE[PC-2] * 256 + BCODE[PC-1]))
+#endif
+#ifndef IMMEDIATE_s4
+#define IMMEDIATE_s4 (PC+=4, CHECK_PC_IN_RANGE(PC), \
+  ((jint)((BCODE[PC-4] << 24) | (BCODE[PC-3] << 16) \
+         | (BCODE[PC-2] << 8) | (BCODE[PC-1]))))
+#endif
+
+inline jfloat
+WORD_TO_FLOAT(jword w)
+{ union Word wu;
+  wu.i = w;
+  return wu.f;
+} 
+
+inline jlong
+WORDS_TO_LONG(jword hi, jword lo)
+{
+  return ((jlong) hi << 32) | ((jlong)lo & (((jlong)1 << 32) -1));
+}
+
+union DWord {
+  jdouble d;
+  jlong l;
+  jword w[2];
+};
+
+inline jdouble
+WORDS_TO_DOUBLE(jword hi, jword lo)
+{ union DWord wu;
+  wu.l = WORDS_TO_LONG(hi, lo);
+  return wu.d;
+} 
+
+/* If PREFIX_CHAR is the first character of the Utf8 encoding of a character,
+   return the number of bytes taken by the encoding.
+   Return -1 for a continuation character.  */
+#define UT8_CHAR_LENGTH(PREFIX_CHAR) \
+  ((unsigned char)(PREFIX_CHAR) < 128 ? 1 \
+   : ((PREFIX_CHAR) & 0x40) == 0 ? -1 \
+   : ((PREFIX_CHAR) & 0x20) == 0 ? 2 \
+   : ((PREFIX_CHAR) & 0x10) == 0 ? 3 \
+   : ((PREFIX_CHAR) & 0x08) == 0 ? 4 : 5)
+
+#endif /* !JAVAOP_H */