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, |
7be1c489 | 3 | 2003, 2004, 2005 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 | #define SWITCH_TABLE(FIX) \ |
64 | ((FIX)->fx_addsy != NULL \ | |
65 | && (FIX)->fx_subsy != NULL \ | |
66 | && S_GET_SEGMENT ((FIX)->fx_addsy) == text_section \ | |
67 | && S_GET_SEGMENT ((FIX)->fx_subsy) == text_section \ | |
68 | && ((FIX)->fx_r_type == BFD_RELOC_32 \ | |
69 | || (FIX)->fx_r_type == BFD_RELOC_16 \ | |
7be1c489 | 70 | || (FIX)->fx_r_type == BFD_RELOC_8)) |
a161fe53 | 71 | |
ae6063d4 AM |
72 | #define TC_FORCE_RELOCATION_SUB_SAME(FIX, SEC) \ |
73 | (! SEG_NORMAL (SEC) \ | |
74 | || TC_FORCE_RELOCATION (FIX) \ | |
a161fe53 AM |
75 | || (sh_relax && SWITCH_TABLE (FIX))) |
76 | ||
77 | /* Don't complain when we leave fx_subsy around. */ | |
78 | #define TC_VALIDATE_FIX_SUB(FIX) \ | |
79 | (sh_relax && SWITCH_TABLE (FIX)) | |
80 | ||
81 | #define MD_PCREL_FROM_SECTION(FIX, SEC) md_pcrel_from_section (FIX, SEC) | |
8edc77b9 | 82 | extern long md_pcrel_from_section (struct fix *, segT); |
79ad6e94 | 83 | |
252b5132 RH |
84 | #define IGNORE_NONSTANDARD_ESCAPES |
85 | ||
05982cac HPN |
86 | #define LISTING_HEADER \ |
87 | (!target_big_endian \ | |
ef230218 JR |
88 | ? "Renesas / SuperH SH GAS Little Endian" \ |
89 | : "Renesas / SuperH SH GAS Big Endian") | |
252b5132 RH |
90 | |
91 | #define md_operand(x) | |
92 | ||
93 | extern const struct relax_type md_relax_table[]; | |
94 | #define TC_GENERIC_RELAX_TABLE md_relax_table | |
95 | ||
252b5132 RH |
96 | /* We record, for each section, whether we have most recently output a |
97 | CODE reloc or a DATA reloc. */ | |
98 | struct sh_segment_info_type | |
99 | { | |
100 | int in_code : 1; | |
101 | }; | |
102 | #define TC_SEGMENT_INFO_TYPE struct sh_segment_info_type | |
103 | ||
104 | /* We call a routine to emit a reloc for a label, so that the linker | |
105 | can align loads and stores without crossing a label. */ | |
07a53e5c RH |
106 | extern void sh_frob_label (symbolS *); |
107 | #define tc_frob_label(sym) sh_frob_label (sym) | |
252b5132 RH |
108 | |
109 | /* We call a routine to flush pending output in order to output a DATA | |
110 | reloc when required. */ | |
8edc77b9 | 111 | extern void sh_flush_pending_output (void); |
252b5132 RH |
112 | #define md_flush_pending_output() sh_flush_pending_output () |
113 | ||
252b5132 | 114 | #define tc_frob_file_before_adjust sh_frob_file |
8edc77b9 | 115 | extern void sh_frob_file (void); |
252b5132 | 116 | |
a161fe53 | 117 | |
252b5132 RH |
118 | #ifdef OBJ_COFF |
119 | /* COFF specific definitions. */ | |
120 | ||
05982cac | 121 | #define COFF_MAGIC (!target_big_endian ? SH_ARCH_MAGIC_LITTLE : SH_ARCH_MAGIC_BIG) |
252b5132 | 122 | |
252b5132 RH |
123 | #define tc_coff_symbol_emit_hook(a) ; /* not used */ |
124 | ||
252b5132 RH |
125 | #define TC_KEEP_FX_OFFSET 1 |
126 | ||
21d75ec2 | 127 | #define SEG_NAME(SEG) segment_name (SEG) |
21d75ec2 | 128 | |
252b5132 | 129 | /* We align most sections to a 16 byte boundary. */ |
18e1d487 | 130 | #define SUB_SEGMENT_ALIGN(SEG, FRCHAIN) \ |
21d75ec2 NC |
131 | (strncmp (SEG_NAME (SEG), ".stabstr", 8) == 0 \ |
132 | ? 0 \ | |
133 | : ((strncmp (SEG_NAME (SEG), ".stab", 5) == 0 \ | |
134 | || strcmp (SEG_NAME (SEG), ".ctors") == 0 \ | |
135 | || strcmp (SEG_NAME (SEG), ".dtors") == 0) \ | |
136 | ? 2 \ | |
252b5132 RH |
137 | : (sh_small ? 2 : 4))) |
138 | ||
139 | #endif /* OBJ_COFF */ | |
140 | ||
141 | #ifdef OBJ_ELF | |
142 | /* ELF specific definitions. */ | |
143 | ||
144 | /* Whether or not the target is big endian */ | |
145 | extern int target_big_endian; | |
d07ed2cd | 146 | #ifdef TE_LINUX |
05982cac | 147 | #define TARGET_FORMAT (!target_big_endian ? "elf32-sh-linux" : "elf32-shbig-linux") |
8d05742f JT |
148 | #elif defined(TE_NetBSD) |
149 | #define TARGET_FORMAT (!target_big_endian ? "elf32-shl-nbsd" : "elf32-sh-nbsd") | |
85fbca6a NC |
150 | #elif defined TARGET_SYMBIAN |
151 | #define TARGET_FORMAT (!target_big_endian ? "elf32-shl-symbian" : "elf32-sh-symbian") | |
55e6e397 RS |
152 | #elif defined (TE_VXWORKS) |
153 | #define TARGET_FORMAT (!target_big_endian ? "elf32-shl-vxworks" : "elf32-sh-vxworks") | |
d07ed2cd | 154 | #else |
05982cac | 155 | #define TARGET_FORMAT (!target_big_endian ? "elf32-shl" : "elf32-sh") |
d07ed2cd | 156 | #endif |
252b5132 | 157 | |
d4845d57 | 158 | #define elf_tc_final_processing sh_elf_final_processing |
8edc77b9 | 159 | extern void sh_elf_final_processing (void); |
d4845d57 | 160 | |
a1cc9221 AO |
161 | #define DIFF_EXPR_OK /* foo-. gets turned into PC relative relocs */ |
162 | ||
163 | #define GLOBAL_OFFSET_TABLE_NAME "_GLOBAL_OFFSET_TABLE_" | |
81d4177b | 164 | |
a1cc9221 AO |
165 | /* This is the relocation type for direct references to |
166 | GLOBAL_OFFSET_TABLE. It comes up in complicated expressions such | |
167 | as _GLOBAL_OFFSET_TABLE_+[.-.L284], which cannot be expressed | |
168 | normally with the regular expressions. The fixup specified here | |
169 | when used at runtime implies that we should add the address of the | |
170 | GOT to the specified location, and as a result we have simplified | |
171 | the expression into something we can use. */ | |
172 | #define TC_RELOC_GLOBAL_OFFSET_TABLE BFD_RELOC_SH_GOTPC | |
173 | ||
a161fe53 | 174 | #define tc_fix_adjustable(FIX) sh_fix_adjustable(FIX) |
8edc77b9 | 175 | extern bfd_boolean sh_fix_adjustable (struct fix *); |
a161fe53 | 176 | |
55cf6793 | 177 | /* Values passed to md_apply_fix don't include symbol values. */ |
a161fe53 AM |
178 | #define MD_APPLY_SYM_VALUE(FIX) 0 |
179 | ||
180 | /* This expression evaluates to true if the relocation is for a local object | |
181 | for which we still want to do the relocation at runtime. False if we | |
a1cc9221 | 182 | are willing to perform this relocation while building the .o file. |
a1cc9221 AO |
183 | |
184 | We can't resolve references to the GOT or the PLT when creating the | |
185 | object file, since these tables are only created by the linker. | |
186 | Also, if the symbol is global, weak, common or not defined, the | |
187 | assembler can't compute the appropriate reloc, since its location | |
188 | can only be determined at link time. */ | |
189 | ||
a161fe53 AM |
190 | #define TC_FORCE_RELOCATION_LOCAL(FIX) \ |
191 | (!(FIX)->fx_pcrel \ | |
192 | || (FIX)->fx_plt \ | |
193 | || (FIX)->fx_r_type == BFD_RELOC_32_PLT_PCREL \ | |
194 | || (FIX)->fx_r_type == BFD_RELOC_32_GOT_PCREL \ | |
195 | || (FIX)->fx_r_type == BFD_RELOC_SH_GOTPC \ | |
196 | || TC_FORCE_RELOCATION (FIX)) | |
197 | ||
bdfaef52 JR |
198 | #define TC_FORCE_RELOCATION_SUB_LOCAL(FIX) (sh_relax && SWITCH_TABLE (FIX)) |
199 | ||
a161fe53 AM |
200 | /* This keeps the subtracted symbol around, for use by PLT_PCREL |
201 | relocs. */ | |
202 | #define TC_FORCE_RELOCATION_SUB_ABS(FIX) \ | |
ae6063d4 | 203 | ((FIX)->fx_r_type == BFD_RELOC_32_PLT_PCREL) |
a161fe53 AM |
204 | |
205 | /* Don't complain when we leave fx_subsy around. */ | |
206 | #undef TC_VALIDATE_FIX_SUB | |
207 | #define TC_VALIDATE_FIX_SUB(FIX) \ | |
208 | ((FIX)->fx_r_type == BFD_RELOC_32_PLT_PCREL \ | |
209 | || (sh_relax && SWITCH_TABLE (FIX))) | |
a1cc9221 | 210 | |
9497f5ac NC |
211 | #define md_parse_name(name, exprP, mode, nextcharP) \ |
212 | sh_parse_name ((name), (exprP), (mode), (nextcharP)) | |
213 | int sh_parse_name (char const *name, expressionS *exprP, | |
214 | enum expr_mode mode, char *nextchar); | |
538cd60f AO |
215 | |
216 | #define TC_CONS_FIX_NEW(FRAG, OFF, LEN, EXP) \ | |
217 | sh_cons_fix_new ((FRAG), (OFF), (LEN), (EXP)) | |
8edc77b9 | 218 | void sh_cons_fix_new (fragS *, int, int, expressionS *); |
538cd60f AO |
219 | |
220 | /* This is used to construct expressions out of @GOTOFF, @PLT and @GOT | |
221 | symbols. The relocation type is stored in X_md. */ | |
222 | #define O_PIC_reloc O_md1 | |
223 | ||
2ce4cc60 KK |
224 | #define TARGET_USE_CFIPOP 1 |
225 | ||
226 | #define tc_cfi_frame_initial_instructions sh_cfi_frame_initial_instructions | |
227 | extern void sh_cfi_frame_initial_instructions (void); | |
228 | ||
229 | #define tc_regname_to_dw2regnum sh_regname_to_dw2regnum | |
1df69f4f | 230 | extern int sh_regname_to_dw2regnum (char *regname); |
2ce4cc60 KK |
231 | |
232 | /* All SH instructions are multiples of 16 bits. */ | |
233 | #define DWARF2_LINE_MIN_INSN_LENGTH 2 | |
234 | #define DWARF2_DEFAULT_RETURN_COLUMN 17 | |
235 | #define DWARF2_CIE_DATA_ALIGNMENT -4 | |
236 | ||
252b5132 | 237 | #endif /* OBJ_ELF */ |