1 /*****************************************************************************/
5 /* Definitions for the o65 file format */
9 /* (C) 2002 Ullrich von Bassewitz */
11 /* D-70597 Stuttgart */
12 /* EMail: uz@musoftware.de */
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 /* Define a structure with the sid register offsets */
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 /* Defines for the mode word */
76 #define O65_CPU_65816 0x8000 /* Executable is for 65816 */
77 #define O65_CPU_6502 0x0000 /* Executable is for the 6502 */
78 #define O65_CPU_MASK 0x8000 /* Mask to extract CPU type */
80 #define O65_RELOC_PAGE 0x4000 /* Page wise relocation */
81 #define O65_RELOC_BYTE 0x0000 /* Byte wise relocation */
82 #define O65_RELOC_MASK 0x4000 /* Mask to extract relocation type */
84 #define O65_SIZE_32BIT 0x2000 /* All size words are 32bit */
85 #define O65_SIZE_16BIT 0x0000 /* All size words are 16bit */
86 #define O65_SIZE_MASK 0x2000 /* Mask to extract size */
88 #define O65_FTYPE_OBJ 0x1000 /* Object file */
89 #define O65_FTYPE_EXE 0x0000 /* Executable file */
90 #define O65_FTYPE_MASK 0x1000 /* Mask to extract type */
92 #define O65_ADDR_SIMPLE 0x0800 /* Simple addressing */
93 #define O65_ADDR_DEFAULT 0x0000 /* Default addressing */
94 #define O65_ADDR_MASK 0x0800 /* Mask to extract addressing */
96 #define O65_ALIGN_1 0x0000 /* Bytewise alignment */
97 #define O65_ALIGN_2 0x0001 /* Align words */
98 #define O65_ALIGN_4 0x0002 /* Align longwords */
99 #define O65_ALIGN_256 0x0003 /* Align pages (256 bytes) */
100 #define O65_ALIGN_MASK 0x0003 /* Mask to extract alignment */
102 /* The four o65 segment types. */
103 #define O65_SEG_UNDEF 0x00
104 #define O65_SEG_ABS 0x01
105 #define O65_SEG_TEXT 0x02
106 #define O65_SEG_DATA 0x03
107 #define O65_SEG_BSS 0x04
108 #define O65_SEG_ZP 0x05
110 /* Relocation type codes */
111 #define O65_RTYPE_WORD 0x80
112 #define O65_RTYPE_HIGH 0x40
113 #define O65_RTYPE_LOW 0x20
114 #define O65_RTYPE_SEGADDR 0xC0
115 #define O65_RTYPE_SEG 0xA0
116 #define O65_RTYPE_MASK 0xE0
119 #define O65_SEGID_UNDEF 0x00
120 #define O65_SEGID_ABS 0x01
121 #define O65_SEGID_TEXT 0x02
122 #define O65_SEGID_DATA 0x03
123 #define O65_SEGID_BSS 0x04
124 #define O65_SEGID_ZP 0x05
125 #define O65_SEGID_MASK 0x07
128 #define O65_OPT_FILENAME 0
130 #define O65_OPT_ASM 2
131 #define O65_OPT_AUTHOR 3
132 #define O65_OPT_TIMESTAMP 4
134 /* Operating system codes for O65_OPT_OS */
135 #define O65_OS_OSA65 1
136 #define O65_OS_LUNIX 2
137 #define O65_OS_CC65_MODULE 3