Commit | Line | Data |
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252b5132 | 1 | /* This file is tc-sh.h |
aae6ddf9 | 2 | Copyright 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002 |
f7e42eb4 | 3 | 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 | |
27 | struct segment_info_struct; | |
28 | struct internal_reloc; | |
29 | #endif | |
30 | ||
252b5132 RH |
31 | /* Whether -relax was used. */ |
32 | extern int sh_relax; | |
33 | ||
34 | /* Whether -small was used. */ | |
35 | extern int sh_small; | |
36 | ||
37 | /* Don't try to break words. */ | |
38 | #define WORKING_DOT_WORD | |
39 | ||
0d10e182 JL |
40 | /* All SH instructions are multiples of 16 bits. */ |
41 | #define DWARF2_LINE_MIN_INSN_LENGTH 2 | |
42 | ||
252b5132 RH |
43 | /* We require .long, et. al., to be aligned correctly. */ |
44 | #define md_cons_align(nbytes) sh_cons_align (nbytes) | |
45 | extern void sh_cons_align PARAMS ((int)); | |
46 | ||
47 | /* When relaxing, we need to generate relocations for alignment | |
48 | directives. */ | |
49 | #define HANDLE_ALIGN(frag) sh_handle_align (frag) | |
50 | extern void sh_handle_align PARAMS ((fragS *)); | |
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) | |
e08ae979 HPN |
56 | |
57 | /* The type fixS is defined (to struct fix) in write.h, but write.h uses | |
58 | definitions from this file. To avoid problems with including write.h | |
59 | after the "right" definitions, don't; just forward-declare struct fix | |
60 | here. */ | |
61 | struct fix; | |
62 | extern int sh_force_relocation PARAMS ((struct fix *)); | |
252b5132 RH |
63 | |
64 | #ifdef OBJ_ELF | |
65 | #define obj_fix_adjustable(fixP) sh_fix_adjustable(fixP) | |
49309057 ILT |
66 | struct fix; |
67 | extern boolean sh_fix_adjustable PARAMS ((struct fix *)); | |
a1cc9221 AO |
68 | |
69 | /* This arranges for gas/write.c to not apply a relocation if | |
70 | obj_fix_adjustable() says it is not adjustable. */ | |
5bcd00a6 JR |
71 | /* ??? fixups with symbols in SEC_MERGE sections are marked with |
72 | obj_fix_adjustable and have a non-section symbol, as in | |
73 | "vwxyz"+1 in execute/string-opt-6.c . Maybe the test of | |
74 | (symbol_used_in_reloc_p should be done in the machine-independent code. */ | |
75 | #define TC_FIX_ADJUSTABLE(fixP) \ | |
76 | (! symbol_used_in_reloc_p (fixP->fx_addsy) && obj_fix_adjustable (fixP)) | |
252b5132 RH |
77 | #endif |
78 | ||
79ad6e94 HPN |
79 | #define MD_PCREL_FROM_SECTION(FIXP, SEC) md_pcrel_from_section (FIXP, SEC) |
80 | extern long md_pcrel_from_section PARAMS ((struct fix *, segT)); | |
81 | ||
252b5132 RH |
82 | #define IGNORE_NONSTANDARD_ESCAPES |
83 | ||
05982cac HPN |
84 | #define LISTING_HEADER \ |
85 | (!target_big_endian \ | |
86 | ? "Hitachi Super-H GAS Little Endian" : "Hitachi Super-H GAS Big Endian") | |
252b5132 RH |
87 | |
88 | #define md_operand(x) | |
89 | ||
90 | extern const struct relax_type md_relax_table[]; | |
91 | #define TC_GENERIC_RELAX_TABLE md_relax_table | |
92 | ||
252b5132 RH |
93 | /* We record, for each section, whether we have most recently output a |
94 | CODE reloc or a DATA reloc. */ | |
95 | struct sh_segment_info_type | |
96 | { | |
97 | int in_code : 1; | |
98 | }; | |
99 | #define TC_SEGMENT_INFO_TYPE struct sh_segment_info_type | |
100 | ||
101 | /* We call a routine to emit a reloc for a label, so that the linker | |
102 | can align loads and stores without crossing a label. */ | |
103 | extern void sh_frob_label PARAMS ((void)); | |
104 | #define tc_frob_label(sym) sh_frob_label () | |
105 | ||
106 | /* We call a routine to flush pending output in order to output a DATA | |
107 | reloc when required. */ | |
108 | extern void sh_flush_pending_output PARAMS ((void)); | |
109 | #define md_flush_pending_output() sh_flush_pending_output () | |
110 | ||
111 | #ifdef BFD_ASSEMBLER | |
112 | #define tc_frob_file_before_adjust sh_frob_file | |
113 | #else | |
114 | #define tc_frob_file sh_frob_file | |
115 | #endif | |
116 | extern void sh_frob_file PARAMS ((void)); | |
117 | ||
118 | #ifdef OBJ_COFF | |
119 | /* COFF specific definitions. */ | |
120 | ||
121 | #define DO_NOT_STRIP 0 | |
122 | ||
123 | /* This macro translates between an internal fix and an coff reloc type */ | |
124 | #define TC_COFF_FIX2RTYPE(fix) ((fix)->fx_r_type) | |
125 | ||
126 | #define BFD_ARCH TARGET_ARCH | |
127 | ||
05982cac | 128 | #define COFF_MAGIC (!target_big_endian ? SH_ARCH_MAGIC_LITTLE : SH_ARCH_MAGIC_BIG) |
252b5132 RH |
129 | |
130 | /* We need to write out relocs which have not been completed. */ | |
131 | #define TC_COUNT_RELOC(fix) ((fix)->fx_addsy != NULL) | |
132 | ||
133 | #define TC_RELOC_MANGLE(seg, fix, int, paddr) \ | |
134 | sh_coff_reloc_mangle ((seg), (fix), (int), (paddr)) | |
135 | extern void sh_coff_reloc_mangle | |
136 | PARAMS ((struct segment_info_struct *, struct fix *, | |
137 | struct internal_reloc *, unsigned int)); | |
138 | ||
139 | #define tc_coff_symbol_emit_hook(a) ; /* not used */ | |
140 | ||
141 | #define NEED_FX_R_TYPE 1 | |
142 | ||
143 | #define TC_KEEP_FX_OFFSET 1 | |
144 | ||
145 | #define TC_COFF_SIZEMACHDEP(frag) tc_coff_sizemachdep(frag) | |
146 | extern int tc_coff_sizemachdep PARAMS ((fragS *)); | |
147 | ||
056350c6 | 148 | #ifdef BFD_ASSEMBLER |
21d75ec2 | 149 | #define SEG_NAME(SEG) segment_name (SEG) |
056350c6 | 150 | #else |
21d75ec2 NC |
151 | #define SEG_NAME(SEG) obj_segment_name (SEG) |
152 | #endif | |
153 | ||
252b5132 | 154 | /* We align most sections to a 16 byte boundary. */ |
18e1d487 | 155 | #define SUB_SEGMENT_ALIGN(SEG, FRCHAIN) \ |
21d75ec2 NC |
156 | (strncmp (SEG_NAME (SEG), ".stabstr", 8) == 0 \ |
157 | ? 0 \ | |
158 | : ((strncmp (SEG_NAME (SEG), ".stab", 5) == 0 \ | |
159 | || strcmp (SEG_NAME (SEG), ".ctors") == 0 \ | |
160 | || strcmp (SEG_NAME (SEG), ".dtors") == 0) \ | |
161 | ? 2 \ | |
252b5132 RH |
162 | : (sh_small ? 2 : 4))) |
163 | ||
164 | #endif /* OBJ_COFF */ | |
165 | ||
166 | #ifdef OBJ_ELF | |
167 | /* ELF specific definitions. */ | |
168 | ||
169 | /* Whether or not the target is big endian */ | |
170 | extern int target_big_endian; | |
d07ed2cd | 171 | #ifdef TE_LINUX |
05982cac | 172 | #define TARGET_FORMAT (!target_big_endian ? "elf32-sh-linux" : "elf32-shbig-linux") |
8d05742f JT |
173 | #elif defined(TE_NetBSD) |
174 | #define TARGET_FORMAT (!target_big_endian ? "elf32-shl-nbsd" : "elf32-sh-nbsd") | |
d07ed2cd | 175 | #else |
05982cac | 176 | #define TARGET_FORMAT (!target_big_endian ? "elf32-shl" : "elf32-sh") |
d07ed2cd | 177 | #endif |
252b5132 | 178 | |
d4845d57 JR |
179 | #define elf_tc_final_processing sh_elf_final_processing |
180 | extern void sh_elf_final_processing PARAMS ((void)); | |
181 | ||
a1cc9221 AO |
182 | #define DIFF_EXPR_OK /* foo-. gets turned into PC relative relocs */ |
183 | ||
184 | #define GLOBAL_OFFSET_TABLE_NAME "_GLOBAL_OFFSET_TABLE_" | |
81d4177b | 185 | |
a1cc9221 AO |
186 | /* This is the relocation type for direct references to |
187 | GLOBAL_OFFSET_TABLE. It comes up in complicated expressions such | |
188 | as _GLOBAL_OFFSET_TABLE_+[.-.L284], which cannot be expressed | |
189 | normally with the regular expressions. The fixup specified here | |
190 | when used at runtime implies that we should add the address of the | |
191 | GOT to the specified location, and as a result we have simplified | |
192 | the expression into something we can use. */ | |
193 | #define TC_RELOC_GLOBAL_OFFSET_TABLE BFD_RELOC_SH_GOTPC | |
194 | ||
195 | /* This expression evaluates to false if the relocation is for a local object | |
196 | for which we still want to do the relocation at runtime. True if we | |
197 | are willing to perform this relocation while building the .o file. | |
198 | This is only used for pcrel relocations, so GOTOFF does not need to be | |
199 | checked here. I am not sure if some of the others are ever used with | |
200 | pcrel, but it is easier to be safe than sorry. | |
201 | ||
202 | We can't resolve references to the GOT or the PLT when creating the | |
203 | object file, since these tables are only created by the linker. | |
204 | Also, if the symbol is global, weak, common or not defined, the | |
205 | assembler can't compute the appropriate reloc, since its location | |
206 | can only be determined at link time. */ | |
207 | ||
208 | #define TC_RELOC_RTSYM_LOC_FIXUP(FIX) \ | |
209 | ((FIX)->fx_r_type != BFD_RELOC_32_PLT_PCREL \ | |
210 | && (FIX)->fx_r_type != BFD_RELOC_32_GOT_PCREL \ | |
211 | && (FIX)->fx_r_type != BFD_RELOC_SH_GOTPC \ | |
212 | && ((FIX)->fx_addsy == NULL \ | |
213 | || (! S_IS_EXTERNAL ((FIX)->fx_addsy) \ | |
214 | && ! S_IS_WEAK ((FIX)->fx_addsy) \ | |
215 | && S_IS_DEFINED ((FIX)->fx_addsy) \ | |
216 | && ! S_IS_COMMON ((FIX)->fx_addsy)))) | |
217 | ||
538cd60f AO |
218 | #define md_parse_name(name, exprP, nextcharP) \ |
219 | sh_parse_name ((name), (exprP), (nextcharP)) | |
220 | int sh_parse_name PARAMS ((char const *name, | |
221 | expressionS *exprP, | |
222 | char *nextchar)); | |
223 | ||
224 | #define TC_CONS_FIX_NEW(FRAG, OFF, LEN, EXP) \ | |
225 | sh_cons_fix_new ((FRAG), (OFF), (LEN), (EXP)) | |
226 | void sh_cons_fix_new PARAMS ((fragS *, int, int, expressionS *)); | |
227 | ||
228 | /* This is used to construct expressions out of @GOTOFF, @PLT and @GOT | |
229 | symbols. The relocation type is stored in X_md. */ | |
230 | #define O_PIC_reloc O_md1 | |
231 | ||
252b5132 | 232 | #endif /* OBJ_ELF */ |