]>
Commit | Line | Data |
---|---|---|
252b5132 | 1 | /* This file is tc-sh.h |
056350c6 | 2 | Copyright (C) 1993, 94, 95, 96, 97, 98, 99, 2000 Free Software Foundation, Inc. |
252b5132 RH |
3 | |
4 | This file is part of GAS, the GNU Assembler. | |
5 | ||
6 | GAS is free software; you can redistribute it and/or modify | |
7 | it under the terms of the GNU General Public License as published by | |
8 | the Free Software Foundation; either version 2, or (at your option) | |
9 | any later version. | |
10 | ||
11 | GAS is distributed in the hope that it will be useful, | |
12 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | GNU General Public License for more details. | |
15 | ||
16 | You should have received a copy of the GNU General Public License | |
17 | along with GAS; see the file COPYING. If not, write to | |
18 | the Free Software Foundation, 59 Temple Place - Suite 330, | |
19 | Boston, MA 02111-1307, USA. */ | |
20 | ||
21 | #define TC_SH | |
22 | ||
23 | #define TARGET_BYTES_BIG_ENDIAN 0 | |
24 | ||
25 | #define TARGET_ARCH bfd_arch_sh | |
26 | ||
27 | #if ANSI_PROTOTYPES | |
28 | struct segment_info_struct; | |
29 | struct internal_reloc; | |
30 | #endif | |
31 | ||
32 | /* Whether in little endian mode. */ | |
33 | extern int shl; | |
34 | ||
35 | /* Whether -relax was used. */ | |
36 | extern int sh_relax; | |
37 | ||
38 | /* Whether -small was used. */ | |
39 | extern int sh_small; | |
40 | ||
41 | /* Don't try to break words. */ | |
42 | #define WORKING_DOT_WORD | |
43 | ||
0d10e182 JL |
44 | /* All SH instructions are multiples of 16 bits. */ |
45 | #define DWARF2_LINE_MIN_INSN_LENGTH 2 | |
46 | ||
252b5132 RH |
47 | /* We require .long, et. al., to be aligned correctly. */ |
48 | #define md_cons_align(nbytes) sh_cons_align (nbytes) | |
49 | extern void sh_cons_align PARAMS ((int)); | |
50 | ||
51 | /* When relaxing, we need to generate relocations for alignment | |
52 | directives. */ | |
53 | #define HANDLE_ALIGN(frag) sh_handle_align (frag) | |
54 | extern void sh_handle_align PARAMS ((fragS *)); | |
55 | ||
56 | /* We need to force out some relocations when relaxing. */ | |
57 | #define TC_FORCE_RELOCATION(fix) sh_force_relocation (fix) | |
58 | extern int sh_force_relocation (); | |
59 | ||
60 | #ifdef OBJ_ELF | |
61 | #define obj_fix_adjustable(fixP) sh_fix_adjustable(fixP) | |
49309057 ILT |
62 | struct fix; |
63 | extern boolean sh_fix_adjustable PARAMS ((struct fix *)); | |
a1cc9221 AO |
64 | |
65 | /* This arranges for gas/write.c to not apply a relocation if | |
66 | obj_fix_adjustable() says it is not adjustable. */ | |
67 | #define TC_FIX_ADJUSTABLE(fixP) obj_fix_adjustable (fixP) | |
252b5132 RH |
68 | #endif |
69 | ||
70 | #define IGNORE_NONSTANDARD_ESCAPES | |
71 | ||
72 | #define LISTING_HEADER (shl ? "Hitachi Super-H GAS Little Endian" : "Hitachi Super-H GAS Big Endian") | |
73 | ||
74 | #define md_operand(x) | |
75 | ||
76 | extern const struct relax_type md_relax_table[]; | |
77 | #define TC_GENERIC_RELAX_TABLE md_relax_table | |
78 | ||
79 | /* We use a special alignment function to insert the correct nop | |
80 | pattern. */ | |
81 | extern int sh_do_align PARAMS ((int, const char *, int, int)); | |
82 | #define md_do_align(n,fill,len,max,l) if (sh_do_align (n,fill,len,max)) goto l | |
83 | ||
84 | /* We record, for each section, whether we have most recently output a | |
85 | CODE reloc or a DATA reloc. */ | |
86 | struct sh_segment_info_type | |
87 | { | |
88 | int in_code : 1; | |
89 | }; | |
90 | #define TC_SEGMENT_INFO_TYPE struct sh_segment_info_type | |
91 | ||
92 | /* We call a routine to emit a reloc for a label, so that the linker | |
93 | can align loads and stores without crossing a label. */ | |
94 | extern void sh_frob_label PARAMS ((void)); | |
95 | #define tc_frob_label(sym) sh_frob_label () | |
96 | ||
97 | /* We call a routine to flush pending output in order to output a DATA | |
98 | reloc when required. */ | |
99 | extern void sh_flush_pending_output PARAMS ((void)); | |
100 | #define md_flush_pending_output() sh_flush_pending_output () | |
101 | ||
102 | #ifdef BFD_ASSEMBLER | |
103 | #define tc_frob_file_before_adjust sh_frob_file | |
104 | #else | |
105 | #define tc_frob_file sh_frob_file | |
106 | #endif | |
107 | extern void sh_frob_file PARAMS ((void)); | |
108 | ||
109 | #ifdef OBJ_COFF | |
110 | /* COFF specific definitions. */ | |
111 | ||
112 | #define DO_NOT_STRIP 0 | |
113 | ||
114 | /* This macro translates between an internal fix and an coff reloc type */ | |
115 | #define TC_COFF_FIX2RTYPE(fix) ((fix)->fx_r_type) | |
116 | ||
117 | #define BFD_ARCH TARGET_ARCH | |
118 | ||
119 | #define COFF_MAGIC (shl ? SH_ARCH_MAGIC_LITTLE : SH_ARCH_MAGIC_BIG) | |
120 | ||
121 | /* We need to write out relocs which have not been completed. */ | |
122 | #define TC_COUNT_RELOC(fix) ((fix)->fx_addsy != NULL) | |
123 | ||
124 | #define TC_RELOC_MANGLE(seg, fix, int, paddr) \ | |
125 | sh_coff_reloc_mangle ((seg), (fix), (int), (paddr)) | |
126 | extern void sh_coff_reloc_mangle | |
127 | PARAMS ((struct segment_info_struct *, struct fix *, | |
128 | struct internal_reloc *, unsigned int)); | |
129 | ||
130 | #define tc_coff_symbol_emit_hook(a) ; /* not used */ | |
131 | ||
132 | #define NEED_FX_R_TYPE 1 | |
133 | ||
134 | #define TC_KEEP_FX_OFFSET 1 | |
135 | ||
136 | #define TC_COFF_SIZEMACHDEP(frag) tc_coff_sizemachdep(frag) | |
137 | extern int tc_coff_sizemachdep PARAMS ((fragS *)); | |
138 | ||
056350c6 | 139 | #ifdef BFD_ASSEMBLER |
21d75ec2 | 140 | #define SEG_NAME(SEG) segment_name (SEG) |
056350c6 | 141 | #else |
21d75ec2 NC |
142 | #define SEG_NAME(SEG) obj_segment_name (SEG) |
143 | #endif | |
144 | ||
252b5132 | 145 | /* We align most sections to a 16 byte boundary. */ |
21d75ec2 NC |
146 | #define SUB_SEGMENT_ALIGN(SEG) \ |
147 | (strncmp (SEG_NAME (SEG), ".stabstr", 8) == 0 \ | |
148 | ? 0 \ | |
149 | : ((strncmp (SEG_NAME (SEG), ".stab", 5) == 0 \ | |
150 | || strcmp (SEG_NAME (SEG), ".ctors") == 0 \ | |
151 | || strcmp (SEG_NAME (SEG), ".dtors") == 0) \ | |
152 | ? 2 \ | |
252b5132 RH |
153 | : (sh_small ? 2 : 4))) |
154 | ||
155 | #endif /* OBJ_COFF */ | |
156 | ||
157 | #ifdef OBJ_ELF | |
158 | /* ELF specific definitions. */ | |
159 | ||
160 | /* Whether or not the target is big endian */ | |
161 | extern int target_big_endian; | |
162 | ||
d07ed2cd AO |
163 | #ifdef TE_LINUX |
164 | #define TARGET_FORMAT (shl ? "elf32-sh-linux" : "elf32-shbig-linux") | |
165 | #else | |
252b5132 | 166 | #define TARGET_FORMAT (shl ? "elf32-shl" : "elf32-sh") |
d07ed2cd | 167 | #endif |
252b5132 | 168 | |
d4845d57 JR |
169 | #define elf_tc_final_processing sh_elf_final_processing |
170 | extern void sh_elf_final_processing PARAMS ((void)); | |
171 | ||
a1cc9221 AO |
172 | #define DIFF_EXPR_OK /* foo-. gets turned into PC relative relocs */ |
173 | ||
174 | #define GLOBAL_OFFSET_TABLE_NAME "_GLOBAL_OFFSET_TABLE_" | |
81d4177b | 175 | |
a1cc9221 AO |
176 | /* This is the relocation type for direct references to |
177 | GLOBAL_OFFSET_TABLE. It comes up in complicated expressions such | |
178 | as _GLOBAL_OFFSET_TABLE_+[.-.L284], which cannot be expressed | |
179 | normally with the regular expressions. The fixup specified here | |
180 | when used at runtime implies that we should add the address of the | |
181 | GOT to the specified location, and as a result we have simplified | |
182 | the expression into something we can use. */ | |
183 | #define TC_RELOC_GLOBAL_OFFSET_TABLE BFD_RELOC_SH_GOTPC | |
184 | ||
185 | /* This expression evaluates to false if the relocation is for a local object | |
186 | for which we still want to do the relocation at runtime. True if we | |
187 | are willing to perform this relocation while building the .o file. | |
188 | This is only used for pcrel relocations, so GOTOFF does not need to be | |
189 | checked here. I am not sure if some of the others are ever used with | |
190 | pcrel, but it is easier to be safe than sorry. | |
191 | ||
192 | We can't resolve references to the GOT or the PLT when creating the | |
193 | object file, since these tables are only created by the linker. | |
194 | Also, if the symbol is global, weak, common or not defined, the | |
195 | assembler can't compute the appropriate reloc, since its location | |
196 | can only be determined at link time. */ | |
197 | ||
198 | #define TC_RELOC_RTSYM_LOC_FIXUP(FIX) \ | |
199 | ((FIX)->fx_r_type != BFD_RELOC_32_PLT_PCREL \ | |
200 | && (FIX)->fx_r_type != BFD_RELOC_32_GOT_PCREL \ | |
201 | && (FIX)->fx_r_type != BFD_RELOC_SH_GOTPC \ | |
202 | && ((FIX)->fx_addsy == NULL \ | |
203 | || (! S_IS_EXTERNAL ((FIX)->fx_addsy) \ | |
204 | && ! S_IS_WEAK ((FIX)->fx_addsy) \ | |
205 | && S_IS_DEFINED ((FIX)->fx_addsy) \ | |
206 | && ! S_IS_COMMON ((FIX)->fx_addsy)))) | |
207 | ||
252b5132 | 208 | #endif /* OBJ_ELF */ |