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exprdefs.h
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exprdefs.h
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/*****************************************************************************/
/* */
/* exprdefs.h */
/* */
/* Expression tree definitions */
/* */
/* */
/* */
/* (C) 1998-2012, Ullrich von Bassewitz */
/* Roemerstrasse 52 */
/* D-70794 Filderstadt */
/* EMail: uz@cc65.org */
/* */
/* */
/* This software is provided 'as-is', without any expressed or implied */
/* warranty. In no event will the authors be held liable for any damages */
/* arising from the use of this software. */
/* */
/* Permission is granted to anyone to use this software for any purpose, */
/* including commercial applications, and to alter it and redistribute it */
/* freely, subject to the following restrictions: */
/* */
/* 1. The origin of this software must not be misrepresented; you must not */
/* claim that you wrote the original software. If you use this software */
/* in a product, an acknowledgment in the product documentation would be */
/* appreciated but is not required. */
/* 2. Altered source versions must be plainly marked as such, and must not */
/* be misrepresented as being the original software. */
/* 3. This notice may not be removed or altered from any source */
/* distribution. */
/* */
/*****************************************************************************/
// In accordance with restricion #2., this file may have been altered.
#ifndef EXPRDEFS_H
#define EXPRDEFS_H
/*****************************************************************************/
/* Data */
/*****************************************************************************/
/* Expression type masks */
#define EXPR_TYPEMASK 0xC0
#define EXPR_BINARYNODE 0x00
#define EXPR_UNARYNODE 0x40
#define EXPR_LEAFNODE 0x80
/* Type of expression nodes */
#define EXPR_NULL 0x00 /* Internal error or NULL node */
/* Leaf node codes */
#define EXPR_LITERAL (EXPR_LEAFNODE | 0x01)
#define EXPR_SYMBOL (EXPR_LEAFNODE | 0x02)
#define EXPR_SECTION (EXPR_LEAFNODE | 0x03)
#define EXPR_SEGMENT (EXPR_LEAFNODE | 0x04) /* Linker only */
#define EXPR_MEMAREA (EXPR_LEAFNODE | 0x05) /* Linker only */
#define EXPR_ULABEL (EXPR_LEAFNODE | 0x06) /* Assembler only */
/* Binary operations, left and right hand sides are valid */
#define EXPR_PLUS (EXPR_BINARYNODE | 0x01)
#define EXPR_MINUS (EXPR_BINARYNODE | 0x02)
#define EXPR_MUL (EXPR_BINARYNODE | 0x03)
#define EXPR_DIV (EXPR_BINARYNODE | 0x04)
#define EXPR_MOD (EXPR_BINARYNODE | 0x05)
#define EXPR_OR (EXPR_BINARYNODE | 0x06)
#define EXPR_XOR (EXPR_BINARYNODE | 0x07)
#define EXPR_AND (EXPR_BINARYNODE | 0x08)
#define EXPR_SHL (EXPR_BINARYNODE | 0x09)
#define EXPR_SHR (EXPR_BINARYNODE | 0x0A)
#define EXPR_EQ (EXPR_BINARYNODE | 0x0B)
#define EXPR_NE (EXPR_BINARYNODE | 0x0C)
#define EXPR_LT (EXPR_BINARYNODE | 0x0D)
#define EXPR_GT (EXPR_BINARYNODE | 0x0E)
#define EXPR_LE (EXPR_BINARYNODE | 0x0F)
#define EXPR_GE (EXPR_BINARYNODE | 0x10)
#define EXPR_BOOLAND (EXPR_BINARYNODE | 0x11)
#define EXPR_BOOLOR (EXPR_BINARYNODE | 0x12)
#define EXPR_BOOLXOR (EXPR_BINARYNODE | 0x13)
#define EXPR_MAX (EXPR_BINARYNODE | 0x14)
#define EXPR_MIN (EXPR_BINARYNODE | 0x15)
/* Unary operations, right hand side is empty */
#define EXPR_UNARY_MINUS (EXPR_UNARYNODE | 0x01)
#define EXPR_NOT (EXPR_UNARYNODE | 0x02)
#define EXPR_SWAP (EXPR_UNARYNODE | 0x03)
#define EXPR_BOOLNOT (EXPR_UNARYNODE | 0x04)
#define EXPR_BANK (EXPR_UNARYNODE | 0x05)
#define EXPR_BYTE0 (EXPR_UNARYNODE | 0x08)
#define EXPR_BYTE1 (EXPR_UNARYNODE | 0x09)
#define EXPR_BYTE2 (EXPR_UNARYNODE | 0x0A)
#define EXPR_BYTE3 (EXPR_UNARYNODE | 0x0B)
#define EXPR_WORD0 (EXPR_UNARYNODE | 0x0C)
#define EXPR_WORD1 (EXPR_UNARYNODE | 0x0D)
#define EXPR_FARADDR (EXPR_UNARYNODE | 0x0E)
#define EXPR_DWORD (EXPR_UNARYNODE | 0x0F)
#define EXPR_NEARADDR (EXPR_UNARYNODE | 0x10)
/* The expression node itself */
typedef struct ExprNode ExprNode;
struct ExprNode {
unsigned char Op; /* Operand/Type */
ExprNode* Left; /* Left leaf */
ExprNode* Right; /* Right leaf */
struct ObjData* Obj; /* Object file reference (linker) */
union {
long IVal; /* If this is a int value */
struct SymEntry* Sym; /* If this is a symbol */
unsigned SecNum; /* If this is a section and Obj != 0 */
unsigned ImpNum; /* If this is an import and Obj != 0 */
struct Import* Imp; /* If this is an import and Obj == 0 */
struct MemoryArea* Mem; /* If this is a memory area */
struct Segment* Seg; /* If this is a segment */
struct Section* Sec; /* If this is a section and Obj == 0 */
} V;
};
/* Macros to determine the expression type */
#define EXPR_NODETYPE(Op) ((Op) & EXPR_TYPEMASK)
#define EXPR_IS_LEAF(Op) (EXPR_NODETYPE (Op) == EXPR_LEAFNODE)
#define EXPR_IS_UNARY(Op) (EXPR_NODETYPE (Op) == EXPR_UNARYNODE)
#define EXPR_IS_BINARY(OP) (EXPR_NODETYPE (Op) == EXPR_BINARYNODE)
/*****************************************************************************/
/* Code */
/*****************************************************************************/
void DumpExpr (const ExprNode* Expr, const ExprNode* (*ResolveSym) (const struct SymEntry*));
/* Dump an expression tree to stdout */
/* End of exprdefs.h */
#endif