Commit | Line | Data |
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252b5132 | 1 | /* This file is tc-sh.h |
ae6063d4 | 2 | Copyright 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, |
aef6203b | 3 | 2003, 2004 Free Software Foundation, Inc. |
252b5132 RH |
4 | |
5 | This file is part of GAS, the GNU Assembler. | |
6 | ||
7 | GAS is free software; you can redistribute it and/or modify | |
8 | it under the terms of the GNU General Public License as published by | |
9 | the Free Software Foundation; either version 2, or (at your option) | |
10 | any later version. | |
11 | ||
12 | GAS is distributed in the hope that it will be useful, | |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
16 | ||
17 | You should have received a copy of the GNU General Public License | |
18 | along with GAS; see the file COPYING. If not, write to | |
4b4da160 NC |
19 | the Free Software Foundation, 51 Franklin Street - Fifth Floor, |
20 | Boston, MA 02110-1301, USA. */ | |
252b5132 RH |
21 | |
22 | #define TC_SH | |
23 | ||
252b5132 RH |
24 | #define TARGET_ARCH bfd_arch_sh |
25 | ||
a161fe53 AM |
26 | /* The type fixS is defined (to struct fix) in write.h, but write.h uses |
27 | definitions from this file. To avoid problems with including write.h | |
28 | after the "right" definitions, don't; just forward-declare struct fix | |
29 | here. */ | |
30 | struct fix; | |
252b5132 RH |
31 | struct segment_info_struct; |
32 | struct internal_reloc; | |
252b5132 | 33 | |
252b5132 RH |
34 | /* Whether -relax was used. */ |
35 | extern int sh_relax; | |
36 | ||
37 | /* Whether -small was used. */ | |
38 | extern int sh_small; | |
39 | ||
40 | /* Don't try to break words. */ | |
41 | #define WORKING_DOT_WORD | |
42 | ||
43 | /* We require .long, et. al., to be aligned correctly. */ | |
44 | #define md_cons_align(nbytes) sh_cons_align (nbytes) | |
8edc77b9 | 45 | extern void sh_cons_align (int); |
252b5132 RH |
46 | |
47 | /* When relaxing, we need to generate relocations for alignment | |
48 | directives. */ | |
49 | #define HANDLE_ALIGN(frag) sh_handle_align (frag) | |
8edc77b9 | 50 | extern void sh_handle_align (fragS *); |
252b5132 | 51 | |
0a9ef439 RH |
52 | #define MAX_MEM_FOR_RS_ALIGN_CODE (1 + 2) |
53 | ||
252b5132 RH |
54 | /* We need to force out some relocations when relaxing. */ |
55 | #define TC_FORCE_RELOCATION(fix) sh_force_relocation (fix) | |
8edc77b9 | 56 | extern int sh_force_relocation (struct fix *); |
252b5132 | 57 | |
a161fe53 AM |
58 | /* This macro decides whether a particular reloc is an entry in a |
59 | switch table. It is used when relaxing, because the linker needs | |
60 | to know about all such entries so that it can adjust them if | |
61 | necessary. */ | |
a1cc9221 | 62 | |
a161fe53 AM |
63 | #ifdef BFD_ASSEMBLER |
64 | #define SWITCH_TABLE_CONS(FIX) (0) | |
65 | #else | |
66 | #define SWITCH_TABLE_CONS(FIX) \ | |
67 | ((FIX)->fx_r_type == 0 \ | |
68 | && ((FIX)->fx_size == 2 \ | |
69 | || (FIX)->fx_size == 1 \ | |
70 | || (FIX)->fx_size == 4)) | |
252b5132 RH |
71 | #endif |
72 | ||
a161fe53 AM |
73 | #define SWITCH_TABLE(FIX) \ |
74 | ((FIX)->fx_addsy != NULL \ | |
75 | && (FIX)->fx_subsy != NULL \ | |
76 | && S_GET_SEGMENT ((FIX)->fx_addsy) == text_section \ | |
77 | && S_GET_SEGMENT ((FIX)->fx_subsy) == text_section \ | |
78 | && ((FIX)->fx_r_type == BFD_RELOC_32 \ | |
79 | || (FIX)->fx_r_type == BFD_RELOC_16 \ | |
80 | || (FIX)->fx_r_type == BFD_RELOC_8 \ | |
81 | || SWITCH_TABLE_CONS (FIX))) | |
82 | ||
ae6063d4 AM |
83 | #define TC_FORCE_RELOCATION_SUB_SAME(FIX, SEC) \ |
84 | (! SEG_NORMAL (SEC) \ | |
85 | || TC_FORCE_RELOCATION (FIX) \ | |
a161fe53 AM |
86 | || (sh_relax && SWITCH_TABLE (FIX))) |
87 | ||
88 | /* Don't complain when we leave fx_subsy around. */ | |
89 | #define TC_VALIDATE_FIX_SUB(FIX) \ | |
90 | (sh_relax && SWITCH_TABLE (FIX)) | |
91 | ||
92 | #define MD_PCREL_FROM_SECTION(FIX, SEC) md_pcrel_from_section (FIX, SEC) | |
8edc77b9 | 93 | extern long md_pcrel_from_section (struct fix *, segT); |
79ad6e94 | 94 | |
252b5132 RH |
95 | #define IGNORE_NONSTANDARD_ESCAPES |
96 | ||
05982cac HPN |
97 | #define LISTING_HEADER \ |
98 | (!target_big_endian \ | |
ef230218 JR |
99 | ? "Renesas / SuperH SH GAS Little Endian" \ |
100 | : "Renesas / SuperH SH GAS Big Endian") | |
252b5132 RH |
101 | |
102 | #define md_operand(x) | |
103 | ||
104 | extern const struct relax_type md_relax_table[]; | |
105 | #define TC_GENERIC_RELAX_TABLE md_relax_table | |
106 | ||
252b5132 RH |
107 | /* We record, for each section, whether we have most recently output a |
108 | CODE reloc or a DATA reloc. */ | |
109 | struct sh_segment_info_type | |
110 | { | |
111 | int in_code : 1; | |
112 | }; | |
113 | #define TC_SEGMENT_INFO_TYPE struct sh_segment_info_type | |
114 | ||
115 | /* We call a routine to emit a reloc for a label, so that the linker | |
116 | can align loads and stores without crossing a label. */ | |
8edc77b9 | 117 | extern void sh_frob_label (void); |
252b5132 RH |
118 | #define tc_frob_label(sym) sh_frob_label () |
119 | ||
120 | /* We call a routine to flush pending output in order to output a DATA | |
121 | reloc when required. */ | |
8edc77b9 | 122 | extern void sh_flush_pending_output (void); |
252b5132 RH |
123 | #define md_flush_pending_output() sh_flush_pending_output () |
124 | ||
125 | #ifdef BFD_ASSEMBLER | |
126 | #define tc_frob_file_before_adjust sh_frob_file | |
127 | #else | |
128 | #define tc_frob_file sh_frob_file | |
129 | #endif | |
8edc77b9 | 130 | extern void sh_frob_file (void); |
252b5132 | 131 | |
a161fe53 | 132 | |
252b5132 RH |
133 | #ifdef OBJ_COFF |
134 | /* COFF specific definitions. */ | |
135 | ||
c03099e6 | 136 | /* This macro translates between an internal fix and a coff reloc type. */ |
252b5132 RH |
137 | #define TC_COFF_FIX2RTYPE(fix) ((fix)->fx_r_type) |
138 | ||
139 | #define BFD_ARCH TARGET_ARCH | |
140 | ||
05982cac | 141 | #define COFF_MAGIC (!target_big_endian ? SH_ARCH_MAGIC_LITTLE : SH_ARCH_MAGIC_BIG) |
252b5132 RH |
142 | |
143 | /* We need to write out relocs which have not been completed. */ | |
144 | #define TC_COUNT_RELOC(fix) ((fix)->fx_addsy != NULL) | |
145 | ||
146 | #define TC_RELOC_MANGLE(seg, fix, int, paddr) \ | |
147 | sh_coff_reloc_mangle ((seg), (fix), (int), (paddr)) | |
148 | extern void sh_coff_reloc_mangle | |
8edc77b9 | 149 | (struct segment_info_struct *, struct fix *, |
224186bc | 150 | struct internal_reloc *, unsigned int); |
252b5132 RH |
151 | |
152 | #define tc_coff_symbol_emit_hook(a) ; /* not used */ | |
153 | ||
154 | #define NEED_FX_R_TYPE 1 | |
155 | ||
156 | #define TC_KEEP_FX_OFFSET 1 | |
157 | ||
158 | #define TC_COFF_SIZEMACHDEP(frag) tc_coff_sizemachdep(frag) | |
8edc77b9 | 159 | extern int tc_coff_sizemachdep (fragS *); |
252b5132 | 160 | |
056350c6 | 161 | #ifdef BFD_ASSEMBLER |
21d75ec2 | 162 | #define SEG_NAME(SEG) segment_name (SEG) |
056350c6 | 163 | #else |
21d75ec2 NC |
164 | #define SEG_NAME(SEG) obj_segment_name (SEG) |
165 | #endif | |
166 | ||
252b5132 | 167 | /* We align most sections to a 16 byte boundary. */ |
18e1d487 | 168 | #define SUB_SEGMENT_ALIGN(SEG, FRCHAIN) \ |
21d75ec2 NC |
169 | (strncmp (SEG_NAME (SEG), ".stabstr", 8) == 0 \ |
170 | ? 0 \ | |
171 | : ((strncmp (SEG_NAME (SEG), ".stab", 5) == 0 \ | |
172 | || strcmp (SEG_NAME (SEG), ".ctors") == 0 \ | |
173 | || strcmp (SEG_NAME (SEG), ".dtors") == 0) \ | |
174 | ? 2 \ | |
252b5132 RH |
175 | : (sh_small ? 2 : 4))) |
176 | ||
177 | #endif /* OBJ_COFF */ | |
178 | ||
179 | #ifdef OBJ_ELF | |
180 | /* ELF specific definitions. */ | |
181 | ||
182 | /* Whether or not the target is big endian */ | |
183 | extern int target_big_endian; | |
d07ed2cd | 184 | #ifdef TE_LINUX |
05982cac | 185 | #define TARGET_FORMAT (!target_big_endian ? "elf32-sh-linux" : "elf32-shbig-linux") |
8d05742f JT |
186 | #elif defined(TE_NetBSD) |
187 | #define TARGET_FORMAT (!target_big_endian ? "elf32-shl-nbsd" : "elf32-sh-nbsd") | |
85fbca6a NC |
188 | #elif defined TARGET_SYMBIAN |
189 | #define TARGET_FORMAT (!target_big_endian ? "elf32-shl-symbian" : "elf32-sh-symbian") | |
d07ed2cd | 190 | #else |
05982cac | 191 | #define TARGET_FORMAT (!target_big_endian ? "elf32-shl" : "elf32-sh") |
d07ed2cd | 192 | #endif |
252b5132 | 193 | |
d4845d57 | 194 | #define elf_tc_final_processing sh_elf_final_processing |
8edc77b9 | 195 | extern void sh_elf_final_processing (void); |
d4845d57 | 196 | |
a1cc9221 AO |
197 | #define DIFF_EXPR_OK /* foo-. gets turned into PC relative relocs */ |
198 | ||
199 | #define GLOBAL_OFFSET_TABLE_NAME "_GLOBAL_OFFSET_TABLE_" | |
81d4177b | 200 | |
a1cc9221 AO |
201 | /* This is the relocation type for direct references to |
202 | GLOBAL_OFFSET_TABLE. It comes up in complicated expressions such | |
203 | as _GLOBAL_OFFSET_TABLE_+[.-.L284], which cannot be expressed | |
204 | normally with the regular expressions. The fixup specified here | |
205 | when used at runtime implies that we should add the address of the | |
206 | GOT to the specified location, and as a result we have simplified | |
207 | the expression into something we can use. */ | |
208 | #define TC_RELOC_GLOBAL_OFFSET_TABLE BFD_RELOC_SH_GOTPC | |
209 | ||
a161fe53 | 210 | #define tc_fix_adjustable(FIX) sh_fix_adjustable(FIX) |
8edc77b9 | 211 | extern bfd_boolean sh_fix_adjustable (struct fix *); |
a161fe53 | 212 | |
55cf6793 | 213 | /* Values passed to md_apply_fix don't include symbol values. */ |
a161fe53 AM |
214 | #define MD_APPLY_SYM_VALUE(FIX) 0 |
215 | ||
216 | /* This expression evaluates to true if the relocation is for a local object | |
217 | for which we still want to do the relocation at runtime. False if we | |
a1cc9221 | 218 | are willing to perform this relocation while building the .o file. |
a1cc9221 AO |
219 | |
220 | We can't resolve references to the GOT or the PLT when creating the | |
221 | object file, since these tables are only created by the linker. | |
222 | Also, if the symbol is global, weak, common or not defined, the | |
223 | assembler can't compute the appropriate reloc, since its location | |
224 | can only be determined at link time. */ | |
225 | ||
a161fe53 AM |
226 | #define TC_FORCE_RELOCATION_LOCAL(FIX) \ |
227 | (!(FIX)->fx_pcrel \ | |
228 | || (FIX)->fx_plt \ | |
229 | || (FIX)->fx_r_type == BFD_RELOC_32_PLT_PCREL \ | |
230 | || (FIX)->fx_r_type == BFD_RELOC_32_GOT_PCREL \ | |
231 | || (FIX)->fx_r_type == BFD_RELOC_SH_GOTPC \ | |
232 | || TC_FORCE_RELOCATION (FIX)) | |
233 | ||
bdfaef52 JR |
234 | #define TC_FORCE_RELOCATION_SUB_LOCAL(FIX) (sh_relax && SWITCH_TABLE (FIX)) |
235 | ||
a161fe53 AM |
236 | /* This keeps the subtracted symbol around, for use by PLT_PCREL |
237 | relocs. */ | |
238 | #define TC_FORCE_RELOCATION_SUB_ABS(FIX) \ | |
ae6063d4 | 239 | ((FIX)->fx_r_type == BFD_RELOC_32_PLT_PCREL) |
a161fe53 AM |
240 | |
241 | /* Don't complain when we leave fx_subsy around. */ | |
242 | #undef TC_VALIDATE_FIX_SUB | |
243 | #define TC_VALIDATE_FIX_SUB(FIX) \ | |
244 | ((FIX)->fx_r_type == BFD_RELOC_32_PLT_PCREL \ | |
245 | || (sh_relax && SWITCH_TABLE (FIX))) | |
a1cc9221 | 246 | |
538cd60f AO |
247 | #define md_parse_name(name, exprP, nextcharP) \ |
248 | sh_parse_name ((name), (exprP), (nextcharP)) | |
8edc77b9 | 249 | int sh_parse_name (char const *name, expressionS *exprP, char *nextchar); |
538cd60f AO |
250 | |
251 | #define TC_CONS_FIX_NEW(FRAG, OFF, LEN, EXP) \ | |
252 | sh_cons_fix_new ((FRAG), (OFF), (LEN), (EXP)) | |
8edc77b9 | 253 | void sh_cons_fix_new (fragS *, int, int, expressionS *); |
538cd60f AO |
254 | |
255 | /* This is used to construct expressions out of @GOTOFF, @PLT and @GOT | |
256 | symbols. The relocation type is stored in X_md. */ | |
257 | #define O_PIC_reloc O_md1 | |
258 | ||
2ce4cc60 KK |
259 | #define TARGET_USE_CFIPOP 1 |
260 | ||
261 | #define tc_cfi_frame_initial_instructions sh_cfi_frame_initial_instructions | |
262 | extern void sh_cfi_frame_initial_instructions (void); | |
263 | ||
264 | #define tc_regname_to_dw2regnum sh_regname_to_dw2regnum | |
265 | extern int sh_regname_to_dw2regnum (const char *regname); | |
266 | ||
267 | /* All SH instructions are multiples of 16 bits. */ | |
268 | #define DWARF2_LINE_MIN_INSN_LENGTH 2 | |
269 | #define DWARF2_DEFAULT_RETURN_COLUMN 17 | |
270 | #define DWARF2_CIE_DATA_ALIGNMENT -4 | |
271 | ||
252b5132 | 272 | #endif /* OBJ_ELF */ |