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cc65/include/o65.h

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/*****************************************************************************/
/* */
/* o65.h */
/* */
/* Definitions for the o65 file format */
/* */
/* */
/* */
/* (C) 2002-2009, Ullrich von Bassewitz */
/* Roemerstrasse 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
/* o65 size type. It is 2 bytes for the 6502 and 4 bytes for the 65816 */
typedef unsigned o65_size;
/* Structure that defines the o65 file header */
typedef struct o65_header o65_header;
struct o65_header {
char marker[2]; /* Non-C64 marker */
char magic[3]; /* o65 magic */
char version; /* Version number */
unsigned mode; /* Mode word */
o65_size tbase; /* Original text (code) segment address */
o65_size tlen; /* Size of text (code) segment */
o65_size dbase; /* Original data segment address */
o65_size dlen; /* Size of data segment */
o65_size bbase; /* Original bss segment address */
o65_size blen; /* Size of bss segment */
o65_size zbase; /* Original zp segment address */
o65_size zlen; /* Size of zp segment */
o65_size stack; /* Stacksize needed */
};
/* 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_CHAIN 0x0400 /* Chained file, another one follows */
#define O65_CHAIN_MASK 0x0400 /* Mask to extract chain flag */
#define O65_BSSZERO 0x0200 /* BSS segment must be zeroed */
#define O65_BSSZERO_MASK 0x0200 /* Mask to extract bss zero flag */
/* The following is used if O65_CPU == 6502 */
#define O65_CPU2_6502 0x0000 /* Executable is for 6502 */
#define O65_CPU2_65C02 0x0010 /* Executable is for 65C02 */
#define O65_CPU2_65SC02 0x0020 /* Executable is for 65SC02 */
#define O65_CPU2_65CE02 0x0030 /* Executable is for 65CE02 */
#define O65_CPU2_6502X 0x0040 /* Executable is for NMOS 6502 */
#define O65_CPU2_65816_EMU 0x0050 /* Executable is for 65816 in emul mode */
#define O65_CPU2_MASK 0x00F0 /* Mask to extract CPU2 field */
#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 3
#define O65_OS_OPENCBM 4
/* End of o65.h */
#endif
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