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1 | /* This file is tc-avr.h |
2 | Copyright (C) 1999, 2000 Free Software Foundation, Inc. | |
3 | ||
4 | Contributed by Denis Chertykov <denisc@overta.ru> | |
5 | ||
6 | This file is part of GAS, the GNU Assembler. | |
7 | ||
8 | GAS is free software; you can redistribute it and/or modify | |
9 | it under the terms of the GNU General Public License as published by | |
10 | the Free Software Foundation; either version 2, or (at your option) | |
11 | any later version. | |
12 | ||
13 | GAS is distributed in the hope that it will be useful, | |
14 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | GNU General Public License for more details. | |
17 | ||
18 | You should have received a copy of the GNU General Public License | |
19 | along with GAS; see the file COPYING. If not, write to the Free | |
20 | Software Foundation, 59 Temple Place - Suite 330, Boston, MA | |
21 | 02111-1307, USA. */ | |
22 | ||
23 | #ifndef BFD_ASSEMBLER | |
24 | #error AVR support requires BFD_ASSEMBLER | |
25 | #endif | |
26 | ||
27 | ||
28 | #define TC_AVR | |
29 | /* By convention, you should define this macro in the `.h' file. For | |
30 | example, `tc-m68k.h' defines `TC_M68K'. You might have to use this | |
31 | if it is necessary to add CPU specific code to the object format | |
32 | file. */ | |
33 | ||
34 | #define TARGET_FORMAT "elf32-avr" | |
35 | /* This macro is the BFD target name to use when creating the output | |
36 | file. This will normally depend upon the `OBJ_FMT' macro. */ | |
37 | ||
38 | #define TARGET_ARCH bfd_arch_avr | |
39 | /* This macro is the BFD architecture to pass to `bfd_set_arch_mach'. */ | |
40 | ||
41 | #define TARGET_MACH 0 | |
42 | /* This macro is the BFD machine number to pass to | |
43 | `bfd_set_arch_mach'. If it is not defined, GAS will use 0. */ | |
44 | ||
45 | #define TARGET_BYTES_BIG_ENDIAN 0 | |
46 | /* You should define this macro to be non-zero if the target is big | |
47 | endian, and zero if the target is little endian. */ | |
48 | ||
49 | #define ONLY_STANDARD_ESCAPES | |
50 | /* If you define this macro, GAS will warn about the use of | |
51 | nonstandard escape sequences in a string. */ | |
52 | ||
53 | #define md_operand(x) | |
54 | /* GAS will call this function for any expression that can not be | |
55 | recognized. When the function is called, `input_line_pointer' | |
56 | will point to the start of the expression. */ | |
57 | ||
58 | void avr_parse_cons_expression (expressionS *exp, int nbytes); | |
59 | ||
60 | #define TC_PARSE_CONS_EXPRESSION(EXPR,N) avr_parse_cons_expression (EXPR,N) | |
61 | /* | |
62 | You may define this macro to parse an expression used in a data | |
63 | allocation pseudo-op such as `.word'. You can use this to | |
64 | recognize relocation directives that may appear in such directives.*/ | |
65 | ||
66 | void avr_cons_fix_new(fragS *frag,int where, int nbytes, expressionS *exp); | |
67 | ||
68 | #define TC_CONS_FIX_NEW(FRAG,WHERE,N,EXP) avr_cons_fix_new(FRAG,WHERE,N,EXP) | |
69 | /* You may define this macro to generate a fixup for a data | |
70 | allocation pseudo-op. */ | |
71 | ||
72 | #define md_number_to_chars number_to_chars_littleendian | |
73 | /* This should just call either `number_to_chars_bigendian' or | |
74 | `number_to_chars_littleendian', whichever is appropriate. On | |
75 | targets like the MIPS which support options to change the | |
76 | endianness, which function to call is a runtime decision. On | |
77 | other targets, `md_number_to_chars' can be a simple macro. */ | |
78 | ||
79 | #define WORKING_DOT_WORD | |
80 | /* | |
81 | `md_short_jump_size' | |
82 | `md_long_jump_size' | |
83 | `md_create_short_jump' | |
84 | `md_create_long_jump' | |
85 | If `WORKING_DOT_WORD' is defined, GAS will not do broken word | |
86 | processing (*note Broken words::.). Otherwise, you should set | |
87 | `md_short_jump_size' to the size of a short jump (a jump that is | |
88 | just long enough to jump around a long jmp) and | |
89 | `md_long_jump_size' to the size of a long jump (a jump that can go | |
90 | anywhere in the function), You should define | |
91 | `md_create_short_jump' to create a short jump around a long jump, | |
92 | and define `md_create_long_jump' to create a long jump. */ | |
93 | ||
94 | #define MD_APPLY_FIX3 | |
95 | ||
96 | #define TC_HANDLES_FX_DONE | |
97 | ||
98 | #undef RELOC_EXPANSION_POSSIBLE | |
99 | /* If you define this macro, it means that `tc_gen_reloc' may return | |
100 | multiple relocation entries for a single fixup. In this case, the | |
101 | return value of `tc_gen_reloc' is a pointer to a null terminated | |
102 | array. */ | |
103 | ||
104 | #define MD_PCREL_FROM_SECTION(FIXP, SEC) md_pcrel_from_section(FIXP, SEC) | |
105 | /* If you define this macro, it should return the offset between the | |
106 | address of a PC relative fixup and the position from which the PC | |
107 | relative adjustment should be made. On many processors, the base | |
108 | of a PC relative instruction is the next instruction, so this | |
109 | macro would return the length of an instruction. */ | |
110 | ||
00d2865b NC |
111 | extern long md_pcrel_from_section PARAMS ((struct fix *, segT)); |
112 | ||
adde6300 AM |
113 | #define LISTING_WORD_SIZE 2 |
114 | /* The number of bytes to put into a word in a listing. This affects | |
115 | the way the bytes are clumped together in the listing. For | |
116 | example, a value of 2 might print `1234 5678' where a value of 1 | |
117 | would print `12 34 56 78'. The default value is 4. */ | |
118 | ||
119 | #define LEX_DOLLAR 0 | |
120 | /* AVR port uses `$' as a logical line separator */ |