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015d2b0830
The createpatch() function was using a fixed-size buffer. I've changed it to be dynamically allocated. I saw that the RPN format used in patches is slightly different from the one used internally in the assembler, so I added a new member to the Expression struct to track the patch size. I've also limited the RPN expression length to 1MB. I realized that the patch RPN expression could potentially be longer than the internal RPN expression, so the internal expression would need a limit smaller than UINT32_MAX. I thought 1MB would be a reasonable limit.
79 lines
3.2 KiB
C
79 lines
3.2 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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#define MAXRPNLEN 1048576
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struct Expression {
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int32_t nVal;
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uint8_t *tRPN;
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uint32_t nRPNCapacity;
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uint32_t nRPNLength;
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uint32_t nRPNPatchSize;
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uint32_t nRPNOut;
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uint32_t isReloc;
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};
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uint32_t rpn_isReloc(const struct Expression *expr);
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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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void rpn_LOGOR(struct Expression *expr, const struct Expression *src1,
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const struct Expression *src2);
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void rpn_LOGAND(struct Expression *expr, const struct Expression *src1,
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const struct Expression *src2);
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void rpn_LOGEQU(struct Expression *expr, const struct Expression *src1,
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const struct Expression *src2);
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void rpn_LOGGT(struct Expression *expr, const struct Expression *src1,
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const struct Expression *src2);
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void rpn_LOGLT(struct Expression *expr, const struct Expression *src1,
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const struct Expression *src2);
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void rpn_LOGGE(struct Expression *expr, const struct Expression *src1,
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const struct Expression *src2);
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void rpn_LOGLE(struct Expression *expr, const struct Expression *src1,
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const struct Expression *src2);
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void rpn_LOGNE(struct Expression *expr, const struct Expression *src1,
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const struct Expression *src2);
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void rpn_ADD(struct Expression *expr, const struct Expression *src1,
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const struct Expression *src2);
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void rpn_SUB(struct Expression *expr, const struct Expression *src1,
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const struct Expression *src2);
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void rpn_XOR(struct Expression *expr, const struct Expression *src1,
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const struct Expression *src2);
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void rpn_OR(struct Expression *expr, const struct Expression *src1,
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const struct Expression *src2);
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void rpn_AND(struct Expression *expr, const struct Expression *src1,
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const struct Expression *src2);
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void rpn_SHL(struct Expression *expr, const struct Expression *src1,
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const struct Expression *src2);
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void rpn_SHR(struct Expression *expr, const struct Expression *src1,
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const struct Expression *src2);
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void rpn_MUL(struct Expression *expr, const struct Expression *src1,
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const struct Expression *src2);
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void rpn_DIV(struct Expression *expr, const struct Expression *src1,
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const struct Expression *src2);
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void rpn_MOD(struct Expression *expr, 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_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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uint16_t rpn_PopByte(struct Expression *expr);
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void rpn_BankSymbol(struct Expression *expr, char *tzSym);
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void rpn_BankSection(struct Expression *expr, char *tzSectionName);
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void rpn_BankSelf(struct Expression *expr);
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void rpn_Init(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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#endif /* RGBDS_ASM_RPN_H */
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