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3c9b82ba | 1 | /* coff information for Zilog Z80 |
250d07de | 2 | Copyright (C) 2005-2021 Free Software Foundation, Inc. |
3c9b82ba NC |
3 | Contributed by Arnold Metselaar <arnold_m@operamail.com> |
4 | ||
5 | This program is free software; you can redistribute it and/or modify | |
6 | it under the terms of the GNU General Public License as published by | |
e4e42b45 | 7 | the Free Software Foundation; either version 3 of the License, or |
3c9b82ba NC |
8 | (at your option) any later version. |
9 | ||
10 | This program is distributed in the hope that it will be useful, | |
11 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
13 | GNU General Public License for more details. | |
14 | ||
15 | You should have received a copy of the GNU General Public License | |
16 | along with this program; if not, write to the Free Software | |
17 | Foundation, 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA. */ | |
18 | ||
19 | #define L_LNNO_SIZE 4 | |
20 | #include "coff/external.h" | |
21 | ||
22 | /* z80 backend does not use dots in section names. */ | |
23 | #undef _TEXT | |
24 | #define _TEXT "text" | |
25 | #undef _DATA | |
26 | #define _DATA "data" | |
27 | #undef _BSS | |
28 | #define _BSS "bss" | |
29 | ||
30 | /* Type of cpu is stored in flags. */ | |
31 | #define F_MACHMASK 0xF000 | |
32 | ||
e2f12e38 AM |
33 | /* Z80 COFF encodes the section alignment in the section header flags */ |
34 | #define COFF_ALIGN_IN_SECTION_HEADER 1 | |
35 | #define COFF_ALIGN_IN_S_FLAGS 1 | |
36 | #define F_ALGNMASK 0x0F00 | |
37 | /* requires a power-of-two argument */ | |
6f8f6017 AM |
38 | #define COFF_ENCODE_ALIGNMENT(B,S,X) \ |
39 | ((S).s_flags |= (((unsigned) (X) & 0xF) << 8), true) | |
e2f12e38 | 40 | /* result is a power of two */ |
6f8f6017 | 41 | #define COFF_DECODE_ALIGNMENT(X) (((X) >> 8) & 0xF) |
e2f12e38 | 42 | |
3c9b82ba NC |
43 | #define Z80MAGIC 0x805A |
44 | ||
45 | #define Z80BADMAG(x) (((x).f_magic != Z80MAGIC)) | |
46 | ||
47 | /* Relocation directives. */ | |
48 | ||
49 | /* This format actually has more bits than we need. */ | |
50 | ||
51 | struct external_reloc | |
52 | { | |
53 | char r_vaddr[4]; | |
54 | char r_symndx[4]; | |
55 | char r_offset[4]; | |
56 | char r_type[2]; | |
57 | char r_stuff[2]; | |
58 | }; | |
59 | ||
60 | #define RELOC struct external_reloc | |
61 | #define RELSZ 16 | |
dc83f2d2 AM |
62 | |
63 | /* Z80 relocations. */ | |
64 | #define R_IMM16 0x01 /* 16 bit abs */ | |
65 | #define R_JR 0x02 /* jr 8 bit disp */ | |
66 | #define R_IMM32 0x11 /* 32 bit abs */ | |
67 | #define R_IMM8 0x22 /* 8 bit abs */ | |
68 | ||
69 | #define R_OFF8 0x32 /* 8 bit signed abs, for (i[xy]+d) */ | |
70 | #define R_IMM24 0x33 /* 24 bit abs */ | |
71 | #define R_IMM16BE 0x3A /* 16 bit abs, big endian */ | |
72 | #define R_BYTE0 0x34 /* first (lowest) 8 bits of multibyte value */ | |
73 | #define R_BYTE1 0x35 /* second 8 bits of multibyte value */ | |
74 | #define R_BYTE2 0x36 /* third 8 bits of multibyte value */ | |
75 | #define R_BYTE3 0x37 /* fourth (highest) 8 bits of multibyte value */ | |
76 | #define R_WORD0 0x38 /* lowest 16 bits of 32 or 24 bit value */ | |
77 | #define R_WORD1 0x39 /* highest 16 bits of 32 or 24 bit value */ |