mirror of https://github.com/PCSX2/pcsx2.git
116 lines
3.8 KiB
C
116 lines
3.8 KiB
C
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#ifndef __ROMDIR_H__
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#define __ROMDIR_H__
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#include <tamtypes.h>
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// an entry in a romdir table. a romdir table is an array of these.
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// gets filled in by searchRomDir()
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typedef struct romdir_entry {
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char name[10]; //+00
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short extSize; //+0A
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int fileSize; //+0C
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} __attribute__ ((packed)) ROMDIR_ENTRY;
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// info about a file in a romdir
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// gets filled in by searchFileInRom()
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typedef struct {
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ROMDIR_ENTRY* entry; // pointer to the file's ROMDIR_ENTRY
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u32 fileData; // address of file contents
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u32 extData; // address of file's ext info
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} ROMFILE_INFO;
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// info about the location of a romdir table
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typedef struct {
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u32 romPtr; //+00
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ROMDIR_ENTRY* romdirPtr;//+04
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u32 extinfoPtr; //+08
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} ROMDIR_INFO;
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typedef struct romfs {
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char* filename; //+00
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int fd; //+04
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int size; //+08
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ROMDIR_INFO romdirInfo; //+0C
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} ROMFS;
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// rounds off a value to the next multiple
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#define ROUND_UP(num, multiple) (((num)+multiple-1) & (~(multiple-1)))
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// searches between beginning and end addresses for a romdir structure.
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// if found it returns info about it in romDirInfo.
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//
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// args: address to start searching from
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// address to stop searching at
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// gets filled in with info if found
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// returns: a pointer to the filled in romDirInfo if successful
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// NULL if error
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extern ROMDIR_INFO* searchRomDir(const u32* searchStartAddr, const u32* searchEndAddr, ROMDIR_INFO* romDirInfo);
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// find a file in the romdir table and return info about it
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//
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// args: info about romdir to search through
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// filename to search for
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// structure to get info about file into
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// returns: a pointer to fileinfo if successful
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// NULL otherwise
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extern ROMFILE_INFO* searchFileInRom(const ROMDIR_INFO* romdirInfo, const char* filename, ROMFILE_INFO* fileinfo);
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// gets a hex number from *addr and updates the pointer
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//
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// args: pointer to string buffer containing a hex number
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// returns: the value of the hex number
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extern u32 getHexNumber(char** addr);
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/*
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IOPBTCONF file format
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=====================
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each line is one of this:
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1. loading address of IOP kernel
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Format: @<HEXNUMBER>
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Example: @800
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Default: 0
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Description: starting with <HEXNUMBER> (or 0 if not specified) the loader will
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place modules in memory on 256 boundaries at +0x30 (the first 48 bytes are
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reserved for info about the following module)
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2. address of function to be called while loading of IOP kernel
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Format: !addr <HEXNUMBER>
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Description: the code indicated by <HEXNUMBER> will be run on kernel loading
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3. name of (parent) included IOPBTCONF
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Format: !include <NAME>
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Description: allow to have another file with same format to be loaded
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recursively; support for this is limited because of the BUGGY parsing;
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Note: you can have such option only at the begining of IOPBTCONF and the
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inclusion can be made without getting stucked in recursion like this:
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ioprp1.img contains IOPBTCONF1 (!include IOPBTCON2) and IOPBTCONF11
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ioprp2.img contains IOPBTCONF2 (!include IOPBTCONF1)
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ioprp.img contains IOPBTCONF (!include IOPBTCONF2<EOL>!include IOPBTCONF11)
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rom0 contains IOPBTCONF and IOPBTCON2
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udnl cdrom0:ioprp1.img cdrom0:ioprp2.img cdrom0:ioprp.img
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the starting of the chain can be named IOPBTCONF only
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also you can include only from the previous romz
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4. comment
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Format: #<TEXT>
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Example: #APPLOAD
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Description: you can have comments on a line that starts with #
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5. modules that have to be loaded after a reset
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Format: <MODULENAME>
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Example: SYSMEM
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Description: each line of IOPBTCONF usualy have a module name; the order the
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modules appear in the list is the order they are loaded as IOP kernel
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--------------------------------
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Notes:
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- each line ends with <EOL>, that is 0x0A
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- in the final loading list the first 2 positions must be SYSMEM and LOADCORE
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*/
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#endif /* __ROMDIR_H__ */
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