ref: 093631ca0b0c3a0db9e161d105c8b9fcac9e660e
dir: /include/link/section.h/
/*
* This file is part of RGBDS.
*
* Copyright (c) 1997-2019, Carsten Sorensen and RGBDS contributors.
*
* SPDX-License-Identifier: MIT
*/
/* Declarations manipulating symbols */
#ifndef RGBDS_LINK_SECTION_H
#define RGBDS_LINK_SECTION_H
/* GUIDELINE: external code MUST NOT BE AWARE of the data structure used!! */
#include <stdint.h>
#include <stdbool.h>
#include "link/main.h"
#include "linkdefs.h"
struct FileStackNode;
struct Section;
struct AttachedSymbol {
struct Symbol *symbol;
struct AttachedSymbol *next;
};
struct Patch {
struct FileStackNode const *src;
uint32_t lineNo;
uint32_t offset;
uint32_t pcSectionID;
uint32_t pcOffset;
enum PatchType type;
uint32_t rpnSize;
uint8_t *rpnExpression;
struct Section const *pcSection;
};
struct Section {
/* Info contained in the object files */
char *name;
uint16_t size;
uint16_t offset;
enum SectionType type;
enum SectionModifier modifier;
bool isAddressFixed;
uint16_t org;
bool isBankFixed;
uint32_t bank;
bool isAlignFixed;
uint16_t alignMask;
uint16_t alignOfs;
uint8_t *data; /* Array of size `size`*/
uint32_t nbPatches;
struct Patch *patches;
/* Extra info computed during linking */
struct Symbol **fileSymbols;
uint32_t nbSymbols;
struct Symbol const **symbols;
struct Section *nextu; /* The next "component" of this unionized sect */
};
/*
* Execute a callback for each section currently registered.
* This is to avoid exposing the data structure in which sections are stored.
* @param callback The function to call for each structure;
* the first argument will be a pointer to the structure,
* the second argument will be the pointer `arg`.
* @param arg A pointer which will be passed to all calls to `callback`.
*/
void sect_ForEach(void (*callback)(struct Section *, void *), void *arg);
/**
* Registers a section to be processed.
* @param section The section to register.
*/
void sect_AddSection(struct Section *section);
/**
* Finds a section by its name.
* @param name The name of the section to look for
* @return A pointer to the section, or NULL if it wasn't found
*/
struct Section *sect_GetSection(char const *name);
/**
* `free`s all section memory that was allocated.
*/
void sect_CleanupSections(void);
/**
* Checks if all sections meet reasonable criteria, such as max size
*/
void sect_DoSanityChecks(void);
#endif /* RGBDS_LINK_SECTION_H */