Commit | Line | Data |
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252b5132 | 1 | /* This file is tc-sh.h |
f7e42eb4 NC |
2 | Copyright 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000 |
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 | ||
24 | #define TARGET_BYTES_BIG_ENDIAN 0 | |
25 | ||
26 | #define TARGET_ARCH bfd_arch_sh | |
27 | ||
28 | #if ANSI_PROTOTYPES | |
29 | struct segment_info_struct; | |
30 | struct internal_reloc; | |
31 | #endif | |
32 | ||
33 | /* Whether in little endian mode. */ | |
34 | extern int shl; | |
35 | ||
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) | |
61 | extern int sh_force_relocation (); | |
62 | ||
63 | #ifdef OBJ_ELF | |
64 | #define obj_fix_adjustable(fixP) sh_fix_adjustable(fixP) | |
49309057 ILT |
65 | struct fix; |
66 | extern boolean sh_fix_adjustable PARAMS ((struct fix *)); | |
a1cc9221 AO |
67 | |
68 | /* This arranges for gas/write.c to not apply a relocation if | |
69 | obj_fix_adjustable() says it is not adjustable. */ | |
70 | #define TC_FIX_ADJUSTABLE(fixP) obj_fix_adjustable (fixP) | |
252b5132 RH |
71 | #endif |
72 | ||
73 | #define IGNORE_NONSTANDARD_ESCAPES | |
74 | ||
75 | #define LISTING_HEADER (shl ? "Hitachi Super-H GAS Little Endian" : "Hitachi Super-H GAS Big Endian") | |
76 | ||
77 | #define md_operand(x) | |
78 | ||
79 | extern const struct relax_type md_relax_table[]; | |
80 | #define TC_GENERIC_RELAX_TABLE md_relax_table | |
81 | ||
252b5132 RH |
82 | /* We record, for each section, whether we have most recently output a |
83 | CODE reloc or a DATA reloc. */ | |
84 | struct sh_segment_info_type | |
85 | { | |
86 | int in_code : 1; | |
87 | }; | |
88 | #define TC_SEGMENT_INFO_TYPE struct sh_segment_info_type | |
89 | ||
90 | /* We call a routine to emit a reloc for a label, so that the linker | |
91 | can align loads and stores without crossing a label. */ | |
92 | extern void sh_frob_label PARAMS ((void)); | |
93 | #define tc_frob_label(sym) sh_frob_label () | |
94 | ||
95 | /* We call a routine to flush pending output in order to output a DATA | |
96 | reloc when required. */ | |
97 | extern void sh_flush_pending_output PARAMS ((void)); | |
98 | #define md_flush_pending_output() sh_flush_pending_output () | |
99 | ||
100 | #ifdef BFD_ASSEMBLER | |
101 | #define tc_frob_file_before_adjust sh_frob_file | |
102 | #else | |
103 | #define tc_frob_file sh_frob_file | |
104 | #endif | |
105 | extern void sh_frob_file PARAMS ((void)); | |
106 | ||
107 | #ifdef OBJ_COFF | |
108 | /* COFF specific definitions. */ | |
109 | ||
110 | #define DO_NOT_STRIP 0 | |
111 | ||
112 | /* This macro translates between an internal fix and an coff reloc type */ | |
113 | #define TC_COFF_FIX2RTYPE(fix) ((fix)->fx_r_type) | |
114 | ||
115 | #define BFD_ARCH TARGET_ARCH | |
116 | ||
117 | #define COFF_MAGIC (shl ? SH_ARCH_MAGIC_LITTLE : SH_ARCH_MAGIC_BIG) | |
118 | ||
119 | /* We need to write out relocs which have not been completed. */ | |
120 | #define TC_COUNT_RELOC(fix) ((fix)->fx_addsy != NULL) | |
121 | ||
122 | #define TC_RELOC_MANGLE(seg, fix, int, paddr) \ | |
123 | sh_coff_reloc_mangle ((seg), (fix), (int), (paddr)) | |
124 | extern void sh_coff_reloc_mangle | |
125 | PARAMS ((struct segment_info_struct *, struct fix *, | |
126 | struct internal_reloc *, unsigned int)); | |
127 | ||
128 | #define tc_coff_symbol_emit_hook(a) ; /* not used */ | |
129 | ||
130 | #define NEED_FX_R_TYPE 1 | |
131 | ||
132 | #define TC_KEEP_FX_OFFSET 1 | |
133 | ||
134 | #define TC_COFF_SIZEMACHDEP(frag) tc_coff_sizemachdep(frag) | |
135 | extern int tc_coff_sizemachdep PARAMS ((fragS *)); | |
136 | ||
056350c6 | 137 | #ifdef BFD_ASSEMBLER |
21d75ec2 | 138 | #define SEG_NAME(SEG) segment_name (SEG) |
056350c6 | 139 | #else |
21d75ec2 NC |
140 | #define SEG_NAME(SEG) obj_segment_name (SEG) |
141 | #endif | |
142 | ||
252b5132 | 143 | /* We align most sections to a 16 byte boundary. */ |
21d75ec2 NC |
144 | #define SUB_SEGMENT_ALIGN(SEG) \ |
145 | (strncmp (SEG_NAME (SEG), ".stabstr", 8) == 0 \ | |
146 | ? 0 \ | |
147 | : ((strncmp (SEG_NAME (SEG), ".stab", 5) == 0 \ | |
148 | || strcmp (SEG_NAME (SEG), ".ctors") == 0 \ | |
149 | || strcmp (SEG_NAME (SEG), ".dtors") == 0) \ | |
150 | ? 2 \ | |
252b5132 RH |
151 | : (sh_small ? 2 : 4))) |
152 | ||
153 | #endif /* OBJ_COFF */ | |
154 | ||
155 | #ifdef OBJ_ELF | |
156 | /* ELF specific definitions. */ | |
157 | ||
158 | /* Whether or not the target is big endian */ | |
159 | extern int target_big_endian; | |
160 | ||
d07ed2cd AO |
161 | #ifdef TE_LINUX |
162 | #define TARGET_FORMAT (shl ? "elf32-sh-linux" : "elf32-shbig-linux") | |
163 | #else | |
252b5132 | 164 | #define TARGET_FORMAT (shl ? "elf32-shl" : "elf32-sh") |
d07ed2cd | 165 | #endif |
252b5132 | 166 | |
d4845d57 JR |
167 | #define elf_tc_final_processing sh_elf_final_processing |
168 | extern void sh_elf_final_processing PARAMS ((void)); | |
169 | ||
a1cc9221 AO |
170 | #define DIFF_EXPR_OK /* foo-. gets turned into PC relative relocs */ |
171 | ||
172 | #define GLOBAL_OFFSET_TABLE_NAME "_GLOBAL_OFFSET_TABLE_" | |
81d4177b | 173 | |
a1cc9221 AO |
174 | /* This is the relocation type for direct references to |
175 | GLOBAL_OFFSET_TABLE. It comes up in complicated expressions such | |
176 | as _GLOBAL_OFFSET_TABLE_+[.-.L284], which cannot be expressed | |
177 | normally with the regular expressions. The fixup specified here | |
178 | when used at runtime implies that we should add the address of the | |
179 | GOT to the specified location, and as a result we have simplified | |
180 | the expression into something we can use. */ | |
181 | #define TC_RELOC_GLOBAL_OFFSET_TABLE BFD_RELOC_SH_GOTPC | |
182 | ||
183 | /* This expression evaluates to false if the relocation is for a local object | |
184 | for which we still want to do the relocation at runtime. True if we | |
185 | are willing to perform this relocation while building the .o file. | |
186 | This is only used for pcrel relocations, so GOTOFF does not need to be | |
187 | checked here. I am not sure if some of the others are ever used with | |
188 | pcrel, but it is easier to be safe than sorry. | |
189 | ||
190 | We can't resolve references to the GOT or the PLT when creating the | |
191 | object file, since these tables are only created by the linker. | |
192 | Also, if the symbol is global, weak, common or not defined, the | |
193 | assembler can't compute the appropriate reloc, since its location | |
194 | can only be determined at link time. */ | |
195 | ||
196 | #define TC_RELOC_RTSYM_LOC_FIXUP(FIX) \ | |
197 | ((FIX)->fx_r_type != BFD_RELOC_32_PLT_PCREL \ | |
198 | && (FIX)->fx_r_type != BFD_RELOC_32_GOT_PCREL \ | |
199 | && (FIX)->fx_r_type != BFD_RELOC_SH_GOTPC \ | |
200 | && ((FIX)->fx_addsy == NULL \ | |
201 | || (! S_IS_EXTERNAL ((FIX)->fx_addsy) \ | |
202 | && ! S_IS_WEAK ((FIX)->fx_addsy) \ | |
203 | && S_IS_DEFINED ((FIX)->fx_addsy) \ | |
204 | && ! S_IS_COMMON ((FIX)->fx_addsy)))) | |
205 | ||
252b5132 | 206 | #endif /* OBJ_ELF */ |