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252b5132 | 1 | /* This file is tc-sh.h |
ae6063d4 AM |
2 | Copyright 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, |
3 | 2003 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 | |
19 | the Free Software Foundation, 59 Temple Place - Suite 330, | |
20 | Boston, MA 02111-1307, USA. */ | |
21 | ||
22 | #define TC_SH | |
23 | ||
252b5132 RH |
24 | #define TARGET_ARCH bfd_arch_sh |
25 | ||
26 | #if ANSI_PROTOTYPES | |
a161fe53 AM |
27 | /* The type fixS is defined (to struct fix) in write.h, but write.h uses |
28 | definitions from this file. To avoid problems with including write.h | |
29 | after the "right" definitions, don't; just forward-declare struct fix | |
30 | here. */ | |
31 | struct fix; | |
252b5132 RH |
32 | struct segment_info_struct; |
33 | struct internal_reloc; | |
34 | #endif | |
35 | ||
252b5132 RH |
36 | /* Whether -relax was used. */ |
37 | extern int sh_relax; | |
38 | ||
39 | /* Whether -small was used. */ | |
40 | extern int sh_small; | |
41 | ||
42 | /* Don't try to break words. */ | |
43 | #define WORKING_DOT_WORD | |
44 | ||
0d10e182 JL |
45 | /* All SH instructions are multiples of 16 bits. */ |
46 | #define DWARF2_LINE_MIN_INSN_LENGTH 2 | |
47 | ||
252b5132 RH |
48 | /* We require .long, et. al., to be aligned correctly. */ |
49 | #define md_cons_align(nbytes) sh_cons_align (nbytes) | |
50 | extern void sh_cons_align PARAMS ((int)); | |
51 | ||
52 | /* When relaxing, we need to generate relocations for alignment | |
53 | directives. */ | |
54 | #define HANDLE_ALIGN(frag) sh_handle_align (frag) | |
55 | extern void sh_handle_align PARAMS ((fragS *)); | |
56 | ||
0a9ef439 RH |
57 | #define MAX_MEM_FOR_RS_ALIGN_CODE (1 + 2) |
58 | ||
252b5132 RH |
59 | /* We need to force out some relocations when relaxing. */ |
60 | #define TC_FORCE_RELOCATION(fix) sh_force_relocation (fix) | |
e08ae979 | 61 | extern int sh_force_relocation PARAMS ((struct fix *)); |
252b5132 | 62 | |
a161fe53 AM |
63 | /* This macro decides whether a particular reloc is an entry in a |
64 | switch table. It is used when relaxing, because the linker needs | |
65 | to know about all such entries so that it can adjust them if | |
66 | necessary. */ | |
a1cc9221 | 67 | |
a161fe53 AM |
68 | #ifdef BFD_ASSEMBLER |
69 | #define SWITCH_TABLE_CONS(FIX) (0) | |
70 | #else | |
71 | #define SWITCH_TABLE_CONS(FIX) \ | |
72 | ((FIX)->fx_r_type == 0 \ | |
73 | && ((FIX)->fx_size == 2 \ | |
74 | || (FIX)->fx_size == 1 \ | |
75 | || (FIX)->fx_size == 4)) | |
252b5132 RH |
76 | #endif |
77 | ||
a161fe53 AM |
78 | #define SWITCH_TABLE(FIX) \ |
79 | ((FIX)->fx_addsy != NULL \ | |
80 | && (FIX)->fx_subsy != NULL \ | |
81 | && S_GET_SEGMENT ((FIX)->fx_addsy) == text_section \ | |
82 | && S_GET_SEGMENT ((FIX)->fx_subsy) == text_section \ | |
83 | && ((FIX)->fx_r_type == BFD_RELOC_32 \ | |
84 | || (FIX)->fx_r_type == BFD_RELOC_16 \ | |
85 | || (FIX)->fx_r_type == BFD_RELOC_8 \ | |
86 | || SWITCH_TABLE_CONS (FIX))) | |
87 | ||
ae6063d4 AM |
88 | #define TC_FORCE_RELOCATION_SUB_SAME(FIX, SEC) \ |
89 | (! SEG_NORMAL (SEC) \ | |
90 | || TC_FORCE_RELOCATION (FIX) \ | |
a161fe53 AM |
91 | || (sh_relax && SWITCH_TABLE (FIX))) |
92 | ||
93 | /* Don't complain when we leave fx_subsy around. */ | |
94 | #define TC_VALIDATE_FIX_SUB(FIX) \ | |
95 | (sh_relax && SWITCH_TABLE (FIX)) | |
96 | ||
97 | #define MD_PCREL_FROM_SECTION(FIX, SEC) md_pcrel_from_section (FIX, SEC) | |
79ad6e94 HPN |
98 | extern long md_pcrel_from_section PARAMS ((struct fix *, segT)); |
99 | ||
252b5132 RH |
100 | #define IGNORE_NONSTANDARD_ESCAPES |
101 | ||
05982cac HPN |
102 | #define LISTING_HEADER \ |
103 | (!target_big_endian \ | |
104 | ? "Hitachi Super-H GAS Little Endian" : "Hitachi Super-H GAS Big Endian") | |
252b5132 RH |
105 | |
106 | #define md_operand(x) | |
107 | ||
108 | extern const struct relax_type md_relax_table[]; | |
109 | #define TC_GENERIC_RELAX_TABLE md_relax_table | |
110 | ||
252b5132 RH |
111 | /* We record, for each section, whether we have most recently output a |
112 | CODE reloc or a DATA reloc. */ | |
113 | struct sh_segment_info_type | |
114 | { | |
115 | int in_code : 1; | |
116 | }; | |
117 | #define TC_SEGMENT_INFO_TYPE struct sh_segment_info_type | |
118 | ||
119 | /* We call a routine to emit a reloc for a label, so that the linker | |
120 | can align loads and stores without crossing a label. */ | |
121 | extern void sh_frob_label PARAMS ((void)); | |
122 | #define tc_frob_label(sym) sh_frob_label () | |
123 | ||
124 | /* We call a routine to flush pending output in order to output a DATA | |
125 | reloc when required. */ | |
126 | extern void sh_flush_pending_output PARAMS ((void)); | |
127 | #define md_flush_pending_output() sh_flush_pending_output () | |
128 | ||
129 | #ifdef BFD_ASSEMBLER | |
130 | #define tc_frob_file_before_adjust sh_frob_file | |
131 | #else | |
132 | #define tc_frob_file sh_frob_file | |
133 | #endif | |
134 | extern void sh_frob_file PARAMS ((void)); | |
135 | ||
a161fe53 | 136 | |
252b5132 RH |
137 | #ifdef OBJ_COFF |
138 | /* COFF specific definitions. */ | |
139 | ||
140 | #define DO_NOT_STRIP 0 | |
141 | ||
c03099e6 | 142 | /* This macro translates between an internal fix and a coff reloc type. */ |
252b5132 RH |
143 | #define TC_COFF_FIX2RTYPE(fix) ((fix)->fx_r_type) |
144 | ||
145 | #define BFD_ARCH TARGET_ARCH | |
146 | ||
05982cac | 147 | #define COFF_MAGIC (!target_big_endian ? SH_ARCH_MAGIC_LITTLE : SH_ARCH_MAGIC_BIG) |
252b5132 RH |
148 | |
149 | /* We need to write out relocs which have not been completed. */ | |
150 | #define TC_COUNT_RELOC(fix) ((fix)->fx_addsy != NULL) | |
151 | ||
152 | #define TC_RELOC_MANGLE(seg, fix, int, paddr) \ | |
153 | sh_coff_reloc_mangle ((seg), (fix), (int), (paddr)) | |
154 | extern void sh_coff_reloc_mangle | |
155 | PARAMS ((struct segment_info_struct *, struct fix *, | |
156 | struct internal_reloc *, unsigned int)); | |
157 | ||
158 | #define tc_coff_symbol_emit_hook(a) ; /* not used */ | |
159 | ||
160 | #define NEED_FX_R_TYPE 1 | |
161 | ||
162 | #define TC_KEEP_FX_OFFSET 1 | |
163 | ||
164 | #define TC_COFF_SIZEMACHDEP(frag) tc_coff_sizemachdep(frag) | |
165 | extern int tc_coff_sizemachdep PARAMS ((fragS *)); | |
166 | ||
056350c6 | 167 | #ifdef BFD_ASSEMBLER |
21d75ec2 | 168 | #define SEG_NAME(SEG) segment_name (SEG) |
056350c6 | 169 | #else |
21d75ec2 NC |
170 | #define SEG_NAME(SEG) obj_segment_name (SEG) |
171 | #endif | |
172 | ||
252b5132 | 173 | /* We align most sections to a 16 byte boundary. */ |
18e1d487 | 174 | #define SUB_SEGMENT_ALIGN(SEG, FRCHAIN) \ |
21d75ec2 NC |
175 | (strncmp (SEG_NAME (SEG), ".stabstr", 8) == 0 \ |
176 | ? 0 \ | |
177 | : ((strncmp (SEG_NAME (SEG), ".stab", 5) == 0 \ | |
178 | || strcmp (SEG_NAME (SEG), ".ctors") == 0 \ | |
179 | || strcmp (SEG_NAME (SEG), ".dtors") == 0) \ | |
180 | ? 2 \ | |
252b5132 RH |
181 | : (sh_small ? 2 : 4))) |
182 | ||
183 | #endif /* OBJ_COFF */ | |
184 | ||
185 | #ifdef OBJ_ELF | |
186 | /* ELF specific definitions. */ | |
187 | ||
188 | /* Whether or not the target is big endian */ | |
189 | extern int target_big_endian; | |
d07ed2cd | 190 | #ifdef TE_LINUX |
05982cac | 191 | #define TARGET_FORMAT (!target_big_endian ? "elf32-sh-linux" : "elf32-shbig-linux") |
8d05742f JT |
192 | #elif defined(TE_NetBSD) |
193 | #define TARGET_FORMAT (!target_big_endian ? "elf32-shl-nbsd" : "elf32-sh-nbsd") | |
d07ed2cd | 194 | #else |
05982cac | 195 | #define TARGET_FORMAT (!target_big_endian ? "elf32-shl" : "elf32-sh") |
d07ed2cd | 196 | #endif |
252b5132 | 197 | |
d4845d57 JR |
198 | #define elf_tc_final_processing sh_elf_final_processing |
199 | extern void sh_elf_final_processing PARAMS ((void)); | |
200 | ||
a1cc9221 AO |
201 | #define DIFF_EXPR_OK /* foo-. gets turned into PC relative relocs */ |
202 | ||
203 | #define GLOBAL_OFFSET_TABLE_NAME "_GLOBAL_OFFSET_TABLE_" | |
81d4177b | 204 | |
a1cc9221 AO |
205 | /* This is the relocation type for direct references to |
206 | GLOBAL_OFFSET_TABLE. It comes up in complicated expressions such | |
207 | as _GLOBAL_OFFSET_TABLE_+[.-.L284], which cannot be expressed | |
208 | normally with the regular expressions. The fixup specified here | |
209 | when used at runtime implies that we should add the address of the | |
210 | GOT to the specified location, and as a result we have simplified | |
211 | the expression into something we can use. */ | |
212 | #define TC_RELOC_GLOBAL_OFFSET_TABLE BFD_RELOC_SH_GOTPC | |
213 | ||
a161fe53 | 214 | #define tc_fix_adjustable(FIX) sh_fix_adjustable(FIX) |
b34976b6 | 215 | extern bfd_boolean sh_fix_adjustable PARAMS ((struct fix *)); |
a161fe53 AM |
216 | |
217 | /* Values passed to md_apply_fix3 don't include symbol values. */ | |
218 | #define MD_APPLY_SYM_VALUE(FIX) 0 | |
219 | ||
220 | /* This expression evaluates to true if the relocation is for a local object | |
221 | for which we still want to do the relocation at runtime. False if we | |
a1cc9221 | 222 | are willing to perform this relocation while building the .o file. |
a1cc9221 AO |
223 | |
224 | We can't resolve references to the GOT or the PLT when creating the | |
225 | object file, since these tables are only created by the linker. | |
226 | Also, if the symbol is global, weak, common or not defined, the | |
227 | assembler can't compute the appropriate reloc, since its location | |
228 | can only be determined at link time. */ | |
229 | ||
a161fe53 AM |
230 | #define TC_FORCE_RELOCATION_LOCAL(FIX) \ |
231 | (!(FIX)->fx_pcrel \ | |
232 | || (FIX)->fx_plt \ | |
233 | || (FIX)->fx_r_type == BFD_RELOC_32_PLT_PCREL \ | |
234 | || (FIX)->fx_r_type == BFD_RELOC_32_GOT_PCREL \ | |
235 | || (FIX)->fx_r_type == BFD_RELOC_SH_GOTPC \ | |
236 | || TC_FORCE_RELOCATION (FIX)) | |
237 | ||
238 | /* This keeps the subtracted symbol around, for use by PLT_PCREL | |
239 | relocs. */ | |
240 | #define TC_FORCE_RELOCATION_SUB_ABS(FIX) \ | |
ae6063d4 | 241 | ((FIX)->fx_r_type == BFD_RELOC_32_PLT_PCREL) |
a161fe53 AM |
242 | |
243 | /* Don't complain when we leave fx_subsy around. */ | |
244 | #undef TC_VALIDATE_FIX_SUB | |
245 | #define TC_VALIDATE_FIX_SUB(FIX) \ | |
246 | ((FIX)->fx_r_type == BFD_RELOC_32_PLT_PCREL \ | |
247 | || (sh_relax && SWITCH_TABLE (FIX))) | |
a1cc9221 | 248 | |
538cd60f AO |
249 | #define md_parse_name(name, exprP, nextcharP) \ |
250 | sh_parse_name ((name), (exprP), (nextcharP)) | |
251 | int sh_parse_name PARAMS ((char const *name, | |
252 | expressionS *exprP, | |
253 | char *nextchar)); | |
254 | ||
255 | #define TC_CONS_FIX_NEW(FRAG, OFF, LEN, EXP) \ | |
256 | sh_cons_fix_new ((FRAG), (OFF), (LEN), (EXP)) | |
257 | void sh_cons_fix_new PARAMS ((fragS *, int, int, expressionS *)); | |
258 | ||
259 | /* This is used to construct expressions out of @GOTOFF, @PLT and @GOT | |
260 | symbols. The relocation type is stored in X_md. */ | |
261 | #define O_PIC_reloc O_md1 | |
262 | ||
252b5132 | 263 | #endif /* OBJ_ELF */ |