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git-svn-id: svn://svn.cc65.org/cc65/trunk@1942 b7a2c559-68d2-44c3-8de9-860c34a00d81
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cuz
2003-02-08 16:32:55 +00:00
parent b28cf4cfd8
commit bbb70a2d47
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src/co65/o65.h Normal file
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/*****************************************************************************/
/* */
/* o65.h */
/* */
/* Definitions and code for the o65 file format */
/* */
/* */
/* */
/* (C) 2002-2003 Ullrich von Bassewitz */
/* R<>merstrasse 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. */
/* */
/*****************************************************************************/
/* This files exports structures and constants to handle the o65 relocatable
* file format as defined by Andre Fachat. See the original document under
*
* http://www.6502.org/users/andre/o65/fileformat.html
*
* for more information.
*/
#ifndef _O65_H
#define _O65_H
/* common */
#include "coll.h"
/*****************************************************************************/
/* Defines */
/*****************************************************************************/
/* Define a structure for the o65 file header */
typedef struct {
char marker[2]; /* Non-C64 marker */
char magic[3]; /* o65 magic */
char version; /* Version number */
unsigned mode; /* Mode word */
unsigned long tbase; /* Original text (code) segment address */
unsigned long tlen; /* Size of text (code) segment */
unsigned long dbase; /* Original data segment address */
unsigned long dlen; /* Size of data segment */
unsigned long bbase; /* Original bss segment address */
unsigned long blen; /* Size of bss segment */
unsigned long zbase; /* Original zp segment address */
unsigned long zlen; /* Size of zp segment */
unsigned long stack; /* Stacksize needed */
} O65Header;
/* o65 option */
typedef struct {
unsigned char Len; /* Option length */
unsigned char Type; /* Option type */
unsigned char Data[1]; /* Option data (dynamically allocated) */
} O65Option;
/* o65 relocation entry */
typedef struct {
unsigned long Offs; /* Offset in segment */
unsigned char Type; /* Relocation type */
unsigned char SegID; /* Segment ID */
unsigned Val; /* Any offset value needed for relocation */
unsigned long SymIdx; /* Index into list of imported symbols */
} O65Reloc;
/* o65 import */
typedef struct {
char Name[1]; /* Name of the import (dynamically allocated) */
} O65Import;
/* o65 export */
typedef struct {
unsigned char SegID; /* Segment ID */
unsigned long Val; /* Relocation value */
char Name[1]; /* Name of the export (dynamically allocated) */
} O65Export;
/* Complete o65 file data */
typedef struct {
O65Header Header; /* File header */
Collection Options; /* O65 options */
unsigned char* Text; /* Text segment data (unrelocated) */
unsigned char* Data; /* Data segment data (unrelocated) */
Collection TextReloc; /* Relocation entries for the text segment */
Collection DataReloc; /* Relocation entries for the data segment */
Collection Imports; /* Imported symbols */
Collection Exports; /* Exported symbols */
} O65Data;
/* Marker, magic and version number */
#define O65_MARKER_0 0x01
#define O65_MARKER_1 0x00
#define O65_MAGIC_0 0x6F /* 'o' */
#define O65_MAGIC_1 0x36 /* '6' */
#define O65_MAGIC_2 0x35 /* '5' */
#define O65_VERSION 0x00
/* Defines for the mode word */
#define O65_CPU_65816 0x8000 /* Executable is for 65816 */
#define O65_CPU_6502 0x0000 /* Executable is for the 6502 */
#define O65_CPU_MASK 0x8000 /* Mask to extract CPU type */
#define O65_RELOC_PAGE 0x4000 /* Page wise relocation */
#define O65_RELOC_BYTE 0x0000 /* Byte wise relocation */
#define O65_RELOC_MASK 0x4000 /* Mask to extract relocation type */
#define O65_SIZE_32BIT 0x2000 /* All size words are 32bit */
#define O65_SIZE_16BIT 0x0000 /* All size words are 16bit */
#define O65_SIZE_MASK 0x2000 /* Mask to extract size */
#define O65_FTYPE_OBJ 0x1000 /* Object file */
#define O65_FTYPE_EXE 0x0000 /* Executable file */
#define O65_FTYPE_MASK 0x1000 /* Mask to extract type */
#define O65_ADDR_SIMPLE 0x0800 /* Simple addressing */
#define O65_ADDR_DEFAULT 0x0000 /* Default addressing */
#define O65_ADDR_MASK 0x0800 /* Mask to extract addressing */
#define O65_ALIGN_1 0x0000 /* Bytewise alignment */
#define O65_ALIGN_2 0x0001 /* Align words */
#define O65_ALIGN_4 0x0002 /* Align longwords */
#define O65_ALIGN_256 0x0003 /* Align pages (256 bytes) */
#define O65_ALIGN_MASK 0x0003 /* Mask to extract alignment */
/* The mode word as generated by the ld65 linker */
#define O65_MODE_CC65 (O65_CPU_6502 | \
O65_RELOC_BYTE | \
O65_SIZE_16BIT | \
O65_FTYPE_EXE | \
O65_ADDR_SIMPLE | \
O65_ALIGN_1)
/* The four o65 segment types. */
#define O65_SEGID_UNDEF 0x00
#define O65_SEGID_ABS 0x01
#define O65_SEGID_TEXT 0x02
#define O65_SEGID_DATA 0x03
#define O65_SEGID_BSS 0x04
#define O65_SEGID_ZP 0x05
#define O65_SEGID_MASK 0x07
/* Relocation type codes */
#define O65_RTYPE_WORD 0x80
#define O65_RTYPE_HIGH 0x40
#define O65_RTYPE_LOW 0x20
#define O65_RTYPE_SEGADDR 0xC0
#define O65_RTYPE_SEG 0xA0
#define O65_RTYPE_MASK 0xE0
/* Segment IDs */
#define O65_SEGID_UNDEF 0x00
#define O65_SEGID_ABS 0x01
#define O65_SEGID_TEXT 0x02
#define O65_SEGID_DATA 0x03
#define O65_SEGID_BSS 0x04
#define O65_SEGID_ZP 0x05
#define O65_SEGID_MASK 0x07
/* Option tags */
#define O65_OPT_FILENAME 0
#define O65_OPT_OS 1
#define O65_OPT_ASM 2
#define O65_OPT_AUTHOR 3
#define O65_OPT_TIMESTAMP 4
/* Operating system codes for O65_OPT_OS */
#define O65_OS_OSA65 1
#define O65_OS_LUNIX 2
#define O65_OS_CC65_MODULE 3
/*****************************************************************************/
/* Code */
/*****************************************************************************/
O65Data* ReadO65File (const char* Name);
/* Read a complete o65 file into dynamically allocated memory and return the
* created O65Data struct.
*/
/* End of o65.h */
#endif