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762474d3ac
This requires some special-casing for `jr @` because the `jr` opcode has already been emitted, but not the operand, so PC points to the middle. Moved the RGBLINK test to RGBASM's folder, and created a new RGBLINK test.
70 lines
2.4 KiB
C
70 lines
2.4 KiB
C
/*
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* This file is part of RGBDS.
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*
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* Copyright (c) 1997-2018, Carsten Sorensen and RGBDS contributors.
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*
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* SPDX-License-Identifier: MIT
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*/
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#ifndef RGBDS_ASM_RPN_H
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#define RGBDS_ASM_RPN_H
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#include <stdint.h>
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#include <stdbool.h>
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#include "linkdefs.h"
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#define MAXRPNLEN 1048576
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struct Expression {
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int32_t nVal; // If the expression's value is known, it's here
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char *reason; // Why the expression is not known, if it isn't
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bool isKnown; // Whether the expression's value is known
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bool isSymbol; // Whether the expression represents a symbol
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uint8_t *tRPN; // Array of bytes serializing the RPN expression
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uint32_t nRPNCapacity; // Size of the `tRPN` buffer
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uint32_t nRPNLength; // Used size of the `tRPN` buffer
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uint32_t nRPNPatchSize; // Size the expression will take in the obj file
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};
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/* FIXME: Should be defined in `asmy.h`, but impossible with POSIX Yacc */
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extern int32_t nPCOffset;
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/*
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* Determines if an expression is known at assembly time
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*/
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static inline bool rpn_isKnown(const struct Expression *expr)
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{
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return expr->isKnown;
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}
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/*
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* Determines if an expression is a symbol suitable for const diffing
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*/
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static inline bool rpn_isSymbol(const struct Expression *expr)
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{
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return expr->isSymbol;
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}
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void rpn_Symbol(struct Expression *expr, char *tzSym);
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void rpn_Number(struct Expression *expr, uint32_t i);
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void rpn_LOGNOT(struct Expression *expr, const struct Expression *src);
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struct Symbol const *rpn_SymbolOf(struct Expression const *expr);
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bool rpn_IsDiffConstant(struct Expression const *src, struct Symbol const *sym);
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void rpn_BinaryOp(enum RPNCommand op, struct Expression *expr,
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const struct Expression *src1,
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const struct Expression *src2);
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void rpn_HIGH(struct Expression *expr, const struct Expression *src);
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void rpn_LOW(struct Expression *expr, const struct Expression *src);
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void rpn_ISCONST(struct Expression *expr, const struct Expression *src);
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void rpn_UNNEG(struct Expression *expr, const struct Expression *src);
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void rpn_UNNOT(struct Expression *expr, const struct Expression *src);
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void rpn_BankSymbol(struct Expression *expr, char const *tzSym);
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void rpn_BankSection(struct Expression *expr, char const *tzSectionName);
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void rpn_BankSelf(struct Expression *expr);
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void rpn_Free(struct Expression *expr);
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void rpn_CheckHRAM(struct Expression *expr, const struct Expression *src);
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void rpn_CheckRST(struct Expression *expr, const struct Expression *src);
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#endif /* RGBDS_ASM_RPN_H */
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