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252b5132 | 1 | /* tc-arc.h - Macros and type defines for the ARC. |
886a2506 NC |
2 | Copyright 2014 Free Software Foundation, Inc. |
3 | ||
4 | Contributed by Claudiu Zissulescu (claziss@synopsys.com) | |
252b5132 RH |
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 | |
ec2655a6 | 10 | published by the Free Software Foundation; either version 3, |
252b5132 RH |
11 | or (at your option) any later version. |
12 | ||
13 | GAS is distributed in the hope that it will be useful, but | |
14 | WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See | |
16 | the 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 | |
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20 | Software Foundation, 51 Franklin Street - Fifth Floor, Boston, MA |
21 | 02110-1301, USA. */ | |
252b5132 | 22 | |
252b5132 | 23 | |
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24 | /* By convention, you should define this macro in the `.h' file. For |
25 | example, `tc-m68k.h' defines `TC_M68K'. You might have to use this | |
26 | if it is necessary to add CPU specific code to the object format | |
27 | file. */ | |
28 | #define TC_ARC | |
252b5132 | 29 | |
886a2506 | 30 | /* We want local label support. */ |
252b5132 RH |
31 | #define LOCAL_LABELS_FB 1 |
32 | ||
886a2506 NC |
33 | /* This macro is the BFD architecture to pass to |
34 | `bfd_set_arch_mach'. */ | |
252b5132 RH |
35 | #define TARGET_ARCH bfd_arch_arc |
36 | ||
886a2506 NC |
37 | /* The `extsym - .' expressions can be emitted using PC-relative |
38 | relocs. */ | |
0d2bcfaf | 39 | #define DIFF_EXPR_OK |
4a314ec8 | 40 | |
886a2506 | 41 | #define REGISTER_PREFIX '%' |
4a314ec8 | 42 | |
886a2506 | 43 | #undef LITTLE_ENDIAN |
252b5132 | 44 | #define LITTLE_ENDIAN 1234 |
0d2bcfaf | 45 | |
886a2506 | 46 | #undef BIG_ENDIAN |
252b5132 RH |
47 | #define BIG_ENDIAN 4321 |
48 | ||
886a2506 NC |
49 | #ifdef TARGET_BYTES_BIG_ENDIAN |
50 | ||
51 | # define DEFAULT_TARGET_FORMAT "elf32-bigarc" | |
52 | # define DEFAULT_BYTE_ORDER BIG_ENDIAN | |
53 | ||
54 | #else | |
55 | /* You should define this macro to be non-zero if the target is big | |
56 | endian, and zero if the target is little endian. */ | |
57 | # define TARGET_BYTES_BIG_ENDIAN 0 | |
58 | ||
59 | # define DEFAULT_TARGET_FORMAT "elf32-littlearc" | |
60 | # define DEFAULT_BYTE_ORDER LITTLE_ENDIAN | |
61 | ||
62 | #endif /* TARGET_BYTES_BIG_ENDIAN. */ | |
63 | ||
252b5132 RH |
64 | /* The endianness of the target format may change based on command |
65 | line arguments. */ | |
886a2506 NC |
66 | extern const char *arc_target_format; |
67 | ||
68 | /* This macro is the BFD target name to use when creating the output | |
69 | file. This will normally depend upon the `OBJ_FMT' macro. */ | |
70 | #define TARGET_FORMAT arc_target_format | |
71 | ||
72 | /* `md_short_jump_size' | |
73 | `md_long_jump_size' | |
74 | `md_create_short_jump' | |
75 | `md_create_long_jump' | |
76 | ||
77 | If `WORKING_DOT_WORD' is defined, GAS will not do broken word | |
78 | processing (*note Broken words::.). Otherwise, you should set | |
79 | `md_short_jump_size' to the size of a short jump (a jump that is | |
80 | just long enough to jump around a long jmp) and `md_long_jump_size' | |
81 | to the size of a long jump (a jump that can go anywhere in the | |
82 | function). You should define `md_create_short_jump' to create a | |
83 | short jump around a long jump, and define `md_create_long_jump' to | |
84 | create a long jump. */ | |
252b5132 | 85 | #define WORKING_DOT_WORD |
252b5132 | 86 | |
886a2506 | 87 | #define LISTING_HEADER "ARC GAS " |
252b5132 | 88 | |
886a2506 NC |
89 | /* The number of bytes to put into a word in a listing. This affects |
90 | the way the bytes are clumped together in the listing. For | |
91 | example, a value of 2 might print `1234 5678' where a value of 1 | |
92 | would print `12 34 56 78'. The default value is 4. */ | |
93 | #define LISTING_WORD_SIZE 2 | |
252b5132 | 94 | |
886a2506 NC |
95 | /* If you define this macro, it should return the position from which |
96 | the PC relative adjustment for a PC relative fixup should be made. | |
97 | On many processors, the base of a PC relative instruction is the | |
98 | next instruction, so this macro would return the length of an | |
99 | instruction, plus the address of the PC relative fixup. The latter | |
100 | can be calculated as fixp->fx_where + | |
101 | fixp->fx_frag->fr_address. */ | |
102 | extern long md_pcrel_from_section (struct fix *, segT); | |
103 | #define MD_PCREL_FROM_SECTION(FIX, SEC) md_pcrel_from_section (FIX, SEC) | |
104 | ||
105 | /* [ ] is index operator. */ | |
106 | #define NEED_INDEX_OPERATOR | |
bcee8eb8 | 107 | |
886a2506 | 108 | #define MAX_MEM_FOR_RS_ALIGN_CODE (1+2) |
a161fe53 | 109 | |
886a2506 NC |
110 | /* HANDLE_ALIGN called after all the assembly has been done, |
111 | so we can fill in all the rs_align_code type frags with | |
112 | nop instructions. */ | |
113 | #define HANDLE_ALIGN(FRAGP) arc_handle_align (FRAGP) | |
114 | ||
115 | /* Values passed to md_apply_fix3 don't include the symbol value. */ | |
a161fe53 AM |
116 | #define MD_APPLY_SYM_VALUE(FIX) 0 |
117 | ||
118 | /* No shared lib support, so we don't need to ensure externally | |
119 | visible symbols can be overridden. */ | |
120 | #define EXTERN_FORCE_RELOC 0 | |
886a2506 NC |
121 | |
122 | /* You may define this macro to generate a fixup for a data allocation | |
123 | pseudo-op. */ | |
124 | #define TC_CONS_FIX_NEW(FRAG, OFF, LEN, EXP, RELOC) \ | |
125 | arc_cons_fix_new ((FRAG), (OFF), (LEN), (EXP), (RELOC)) | |
126 | ||
127 | /* We don't want gas to fixup the following program memory related | |
128 | relocations. */ | |
129 | #define TC_VALIDATE_FIX(FIXP,SEG,SKIP) \ | |
130 | if ((FIXP->fx_r_type == BFD_RELOC_ARC_GOTPC32) \ | |
131 | && FIXP->fx_addsy != NULL \ | |
132 | && FIXP->fx_subsy == NULL) \ | |
133 | { \ | |
134 | symbol_mark_used_in_reloc (FIXP->fx_addsy); \ | |
135 | goto SKIP; \ | |
136 | } | |
137 | ||
138 | /* BFD_RELOC_ARC_TLS_GD_LD may use fx_subsy to store a label that is | |
139 | later turned into fx_offset. */ | |
140 | #define TC_FORCE_RELOCATION_SUB_LOCAL(FIX, SEG) \ | |
141 | ((FIX)->fx_r_type == BFD_RELOC_ARC_TLS_GD_LD) | |
142 | ||
143 | #define TC_VALIDATE_FIX_SUB(FIX, SEG) \ | |
144 | ((md_register_arithmetic || (SEG) != reg_section) \ | |
145 | && ((FIX)->fx_r_type == BFD_RELOC_GPREL32 \ | |
146 | || (FIX)->fx_r_type == BFD_RELOC_GPREL16 \ | |
147 | || (FIX)->fx_r_type == BFD_RELOC_ARC_TLS_DTPOFF \ | |
148 | || (FIX)->fx_r_type == BFD_RELOC_ARC_TLS_DTPOFF_S9 \ | |
149 | || TC_FORCE_RELOCATION_SUB_LOCAL (FIX, SEG))) | |
150 | ||
151 | /* We use this to mark the end-loop label. We use this mark for ZOL | |
152 | validity checks. */ | |
153 | #define TC_SYMFIELD_TYPE unsigned int | |
154 | #define ARC_GET_FLAG(s) (*symbol_get_tc (s)) | |
155 | #define ARC_SET_FLAG(s,v) (*symbol_get_tc (s) |= (v)) | |
156 | ||
157 | /* The symbol is a ZOL's end loop label. */ | |
158 | #define ARC_FLAG_ZOL (1 << 0) | |
159 | ||
160 | /* We use this hook to check the validity of the last to instructions | |
161 | of a ZOL. */ | |
162 | #define tc_frob_label(S) arc_frob_label (S) | |
163 | ||
164 | #define GLOBAL_OFFSET_TABLE_NAME "_GLOBAL_OFFSET_TABLE_" | |
165 | #define DYNAMIC_STRUCT_NAME "_DYNAMIC" | |
166 | ||
167 | /* We need to take care of not having section relative fixups for the | |
168 | fixups with respect to Position Independent Code. */ | |
169 | #define tc_fix_adjustable(FIX) tc_arc_fix_adjustable(FIX) | |
170 | ||
171 | /* This hook is required to parse register names as operands. */ | |
172 | #define md_parse_name(name, exp, m, c) arc_parse_name (name, exp) | |
173 | ||
174 | extern bfd_boolean arc_parse_name (const char *, struct expressionS *); | |
175 | extern int tc_arc_fix_adjustable (struct fix *); | |
176 | extern void arc_handle_align (fragS *); | |
177 | extern void arc_cons_fix_new (fragS *, int, int, expressionS *, | |
178 | bfd_reloc_code_real_type); | |
179 | extern void arc_frob_label (symbolS *); | |
180 | ||
181 | /* The blink register is r31. */ | |
182 | #define DWARF2_DEFAULT_RETURN_COLUMN 31 | |
183 | /* Registers are generally saved at negative offsets to the CFA. */ | |
184 | #define DWARF2_CIE_DATA_ALIGNMENT (-4) | |
185 | ||
186 | /* Define the NOPs. */ | |
187 | #define NOP_OPCODE_S 0x000078E0 | |
188 | #define NOP_OPCODE_L 0x264A7000 /* mov 0,0. */ | |
189 |