1 /*****************************************************************************/
5 /* Definitions for the o65 file format */
9 /* (C) 2002-2009, Ullrich von Bassewitz */
10 /* Roemerstrasse 52 */
11 /* D-70794 Filderstadt */
12 /* EMail: uz@cc65.org */
15 /* This software is provided 'as-is', without any expressed or implied */
16 /* warranty. In no event will the authors be held liable for any damages */
17 /* arising from the use of this software. */
19 /* Permission is granted to anyone to use this software for any purpose, */
20 /* including commercial applications, and to alter it and redistribute it */
21 /* freely, subject to the following restrictions: */
23 /* 1. The origin of this software must not be misrepresented; you must not */
24 /* claim that you wrote the original software. If you use this software */
25 /* in a product, an acknowledgment in the product documentation would be */
26 /* appreciated but is not required. */
27 /* 2. Altered source versions must be plainly marked as such, and must not */
28 /* be misrepresented as being the original software. */
29 /* 3. This notice may not be removed or altered from any source */
32 /*****************************************************************************/
36 /* This files exports structures and constants to handle the o65 relocatable
37 * file format as defined by Andre Fachat. See the original document under
39 * http://www.6502.org/users/andre/o65/fileformat.html
41 * for more information.
51 /* o65 size type. It is 2 bytes for the 6502 and 4 bytes for the 65816 */
52 typedef unsigned o65_size;
55 /* Structure that defines the o65 file header */
56 typedef struct o65_header o65_header;
58 char marker[2]; /* Non-C64 marker */
59 char magic[3]; /* o65 magic */
60 char version; /* Version number */
61 unsigned mode; /* Mode word */
62 o65_size tbase; /* Original text (code) segment address */
63 o65_size tlen; /* Size of text (code) segment */
64 o65_size dbase; /* Original data segment address */
65 o65_size dlen; /* Size of data segment */
66 o65_size bbase; /* Original bss segment address */
67 o65_size blen; /* Size of bss segment */
68 o65_size zbase; /* Original zp segment address */
69 o65_size zlen; /* Size of zp segment */
70 o65_size stack; /* Stacksize needed */
75 /* Marker, magic and version number */
76 #define O65_MARKER_0 0x01
77 #define O65_MARKER_1 0x00
78 #define O65_MAGIC_0 0x6F /* 'o' */
79 #define O65_MAGIC_1 0x36 /* '6' */
80 #define O65_MAGIC_2 0x35 /* '5' */
81 #define O65_VERSION 0x00
83 /* Defines for the mode word */
84 #define O65_CPU_65816 0x8000 /* Executable is for 65816 */
85 #define O65_CPU_6502 0x0000 /* Executable is for the 6502 */
86 #define O65_CPU_MASK 0x8000 /* Mask to extract CPU type */
88 #define O65_RELOC_PAGE 0x4000 /* Page wise relocation */
89 #define O65_RELOC_BYTE 0x0000 /* Byte wise relocation */
90 #define O65_RELOC_MASK 0x4000 /* Mask to extract relocation type */
92 #define O65_SIZE_32BIT 0x2000 /* All size words are 32bit */
93 #define O65_SIZE_16BIT 0x0000 /* All size words are 16bit */
94 #define O65_SIZE_MASK 0x2000 /* Mask to extract size */
96 #define O65_FTYPE_OBJ 0x1000 /* Object file */
97 #define O65_FTYPE_EXE 0x0000 /* Executable file */
98 #define O65_FTYPE_MASK 0x1000 /* Mask to extract type */
100 #define O65_ADDR_SIMPLE 0x0800 /* Simple addressing */
101 #define O65_ADDR_DEFAULT 0x0000 /* Default addressing */
102 #define O65_ADDR_MASK 0x0800 /* Mask to extract addressing */
104 #define O65_CHAIN 0x0400 /* Chained file, another one follows */
105 #define O65_CHAIN_MASK 0x0400 /* Mask to extract chain flag */
107 #define O65_BSSZERO 0x0200 /* BSS segment must be zeroed */
108 #define O65_BSSZERO_MASK 0x0200 /* Mask to extract bss zero flag */
110 /* The following is used if O65_CPU == 6502 */
111 #define O65_CPU2_6502 0x0000 /* Executable is for 6502 */
112 #define O65_CPU2_65C02 0x0010 /* Executable is for 65C02 */
113 #define O65_CPU2_65SC02 0x0020 /* Executable is for 65SC02 */
114 #define O65_CPU2_65CE02 0x0030 /* Executable is for 65CE02 */
115 #define O65_CPU2_6502X 0x0040 /* Executable is for NMOS 6502 */
116 #define O65_CPU2_65816_EMU 0x0050 /* Executable is for 65816 in emul mode */
117 #define O65_CPU2_MASK 0x00F0 /* Mask to extract CPU2 field */
119 #define O65_ALIGN_1 0x0000 /* Bytewise alignment */
120 #define O65_ALIGN_2 0x0001 /* Align words */
121 #define O65_ALIGN_4 0x0002 /* Align longwords */
122 #define O65_ALIGN_256 0x0003 /* Align pages (256 bytes) */
123 #define O65_ALIGN_MASK 0x0003 /* Mask to extract alignment */
125 /* The mode word as generated by the ld65 linker */
126 #define O65_MODE_CC65 (O65_CPU_6502 | \
133 /* The four o65 segment types. */
134 #define O65_SEGID_UNDEF 0x00
135 #define O65_SEGID_ABS 0x01
136 #define O65_SEGID_TEXT 0x02
137 #define O65_SEGID_DATA 0x03
138 #define O65_SEGID_BSS 0x04
139 #define O65_SEGID_ZP 0x05
140 #define O65_SEGID_MASK 0x07
142 /* Relocation type codes */
143 #define O65_RTYPE_WORD 0x80
144 #define O65_RTYPE_HIGH 0x40
145 #define O65_RTYPE_LOW 0x20
146 #define O65_RTYPE_SEGADDR 0xC0
147 #define O65_RTYPE_SEG 0xA0
148 #define O65_RTYPE_MASK 0xE0
151 #define O65_SEGID_UNDEF 0x00
152 #define O65_SEGID_ABS 0x01
153 #define O65_SEGID_TEXT 0x02
154 #define O65_SEGID_DATA 0x03
155 #define O65_SEGID_BSS 0x04
156 #define O65_SEGID_ZP 0x05
157 #define O65_SEGID_MASK 0x07
160 #define O65_OPT_FILENAME 0
162 #define O65_OPT_ASM 2
163 #define O65_OPT_AUTHOR 3
164 #define O65_OPT_TIMESTAMP 4
166 /* Operating system codes for O65_OPT_OS */
167 #define O65_OS_OSA65 1
168 #define O65_OS_LUNIX 2
169 #define O65_OS_CC65 3
170 #define O65_OS_OPENCBM 4