1 /* This file is tc-avr.h
2 Copyright 1999, 2000, 2001, 2002, 2005 Free Software Foundation, Inc.
4 Contributed by Denis Chertykov <denisc@overta.ru>
6 This file is part of GAS, the GNU Assembler.
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)
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.
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, 51 Franklin Street - Fifth Floor, Boston, MA
23 /* By convention, you should define this macro in the `.h' file. For
24 example, `tc-m68k.h' defines `TC_M68K'. You might have to use this
25 if it is necessary to add CPU specific code to the object format
29 /* This macro is the BFD target name to use when creating the output
30 file. This will normally depend upon the `OBJ_FMT' macro. */
31 #define TARGET_FORMAT "elf32-avr"
33 /* This macro is the BFD architecture to pass to `bfd_set_arch_mach'. */
34 #define TARGET_ARCH bfd_arch_avr
36 /* This macro is the BFD machine number to pass to
37 `bfd_set_arch_mach'. If it is not defined, GAS will use 0. */
40 /* You should define this macro to be non-zero if the target is big
41 endian, and zero if the target is little endian. */
42 #define TARGET_BYTES_BIG_ENDIAN 0
44 /* If you define this macro, GAS will warn about the use of
45 nonstandard escape sequences in a string. */
46 #define ONLY_STANDARD_ESCAPES
48 /* GAS will call this function for any expression that can not be
49 recognized. When the function is called, `input_line_pointer'
50 will point to the start of the expression. */
53 /* You may define this macro to parse an expression used in a data
54 allocation pseudo-op such as `.word'. You can use this to
55 recognize relocation directives that may appear in such directives. */
56 #define TC_PARSE_CONS_EXPRESSION(EXPR,N) avr_parse_cons_expression (EXPR, N)
57 extern void avr_parse_cons_expression (expressionS
*, int);
59 /* You may define this macro to generate a fixup for a data
60 allocation pseudo-op. */
61 #define TC_CONS_FIX_NEW(FRAG,WHERE,N,EXP) avr_cons_fix_new (FRAG, WHERE, N, EXP)
62 extern void avr_cons_fix_new (fragS
*,int, int, expressionS
*);
64 /* This should just call either `number_to_chars_bigendian' or
65 `number_to_chars_littleendian', whichever is appropriate. On
66 targets like the MIPS which support options to change the
67 endianness, which function to call is a runtime decision. On
68 other targets, `md_number_to_chars' can be a simple macro. */
69 #define md_number_to_chars number_to_chars_littleendian
71 /* `md_short_jump_size'
73 `md_create_short_jump'
75 If `WORKING_DOT_WORD' is defined, GAS will not do broken word
76 processing (*note Broken words::.). Otherwise, you should set
77 `md_short_jump_size' to the size of a short jump (a jump that is
78 just long enough to jump around a long jmp) and
79 `md_long_jump_size' to the size of a long jump (a jump that can go
80 anywhere in the function), You should define
81 `md_create_short_jump' to create a short jump around a long jump,
82 and define `md_create_long_jump' to create a long jump. */
83 #define WORKING_DOT_WORD
85 /* If you define this macro, it means that `tc_gen_reloc' may return
86 multiple relocation entries for a single fixup. In this case, the
87 return value of `tc_gen_reloc' is a pointer to a null terminated
89 #undef RELOC_EXPANSION_POSSIBLE
91 /* No shared lib support, so we don't need to ensure externally
92 visible symbols can be overridden. */
93 #define EXTERN_FORCE_RELOC 0
95 /* Values passed to md_apply_fix don't include the symbol value. */
96 #define MD_APPLY_SYM_VALUE(FIX) 0
98 /* If you define this macro, it should return the offset between the
99 address of a PC relative fixup and the position from which the PC
100 relative adjustment should be made. On many processors, the base
101 of a PC relative instruction is the next instruction, so this
102 macro would return the length of an instruction. */
103 #define MD_PCREL_FROM_SECTION(FIX, SEC) md_pcrel_from_section (FIX, SEC)
104 extern long md_pcrel_from_section (struct fix
*, segT
);
106 /* The number of bytes to put into a word in a listing. This affects
107 the way the bytes are clumped together in the listing. For
108 example, a value of 2 might print `1234 5678' where a value of 1
109 would print `12 34 56 78'. The default value is 4. */
110 #define LISTING_WORD_SIZE 2
112 /* AVR port uses `$' as a logical line separator */
115 /* An `.lcomm' directive with no explicit alignment parameter will
116 use this macro to set P2VAR to the alignment that a request for
117 SIZE bytes will have. The alignment is expressed as a power of
118 two. If no alignment should take place, the macro definition
119 should do nothing. Some targets define a `.bss' directive that is
120 also affected by this macro. The default definition will set
121 P2VAR to the truncated power of two of sizes up to eight bytes. */
122 #define TC_IMPLICIT_LCOMM_ALIGNMENT(SIZE, P2VAR) (P2VAR) = 0
This page took 0.039539 seconds and 4 git commands to generate.