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252b5132 RH |
1 | /* tc-sparc.h - Macros and type defines for the sparc. |
2 | Copyright (C) 1989, 90-96, 97, 98, 1999 Free Software Foundation, Inc. | |
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 | |
8 | published by the Free Software Foundation; either version 2, | |
9 | or (at your option) any later version. | |
10 | ||
11 | GAS is distributed in the hope that it will be useful, but | |
12 | WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See | |
14 | the GNU General Public License for more details. | |
15 | ||
16 | You should have received a copy of the GNU General Public | |
17 | License along with GAS; see the file COPYING. If not, write | |
18 | to the Free Software Foundation, 59 Temple Place - Suite 330, | |
19 | Boston, MA 02111-1307, USA. */ | |
20 | ||
21 | #ifndef TC_SPARC | |
22 | #define TC_SPARC 1 | |
23 | ||
24 | #ifdef ANSI_PROTOTYPES | |
25 | struct frag; | |
26 | #endif | |
27 | ||
28 | /* This is used to set the default value for `target_big_endian'. */ | |
29 | #define TARGET_BYTES_BIG_ENDIAN 1 | |
30 | ||
31 | #define LOCAL_LABELS_FB 1 | |
32 | ||
33 | #define TARGET_ARCH bfd_arch_sparc | |
34 | ||
35 | extern const char *sparc_target_format PARAMS ((void)); | |
36 | #define TARGET_FORMAT sparc_target_format () | |
37 | ||
dabe3bbc RH |
38 | #define RELOC_EXPANSION_POSSIBLE |
39 | #define MAX_RELOC_EXPANSION 2 | |
40 | ||
252b5132 RH |
41 | #if 0 |
42 | #ifdef TE_SPARCAOUT | |
43 | /* Bi-endian support may eventually be unconditional, but until things are | |
44 | working well it's only provided for targets that need it. */ | |
45 | #define SPARC_BIENDIAN | |
46 | #endif | |
47 | #endif | |
48 | /* Make it unconditional and check if -EL is valid after option parsing */ | |
49 | #define SPARC_BIENDIAN | |
50 | ||
51 | #define WORKING_DOT_WORD | |
52 | ||
53 | #define md_convert_frag(b,s,f) {as_fatal (_("sparc convert_frag\n"));} | |
54 | #define md_estimate_size_before_relax(f,s) \ | |
55 | (as_fatal(_("estimate_size_before_relax called")),1) | |
56 | ||
57 | #define LISTING_HEADER "SPARC GAS " | |
58 | ||
59 | extern int sparc_pic_code; | |
60 | ||
61 | #define md_do_align(n, fill, len, max, around) \ | |
62 | if ((n) && (n) <= 10 && !need_pass_2 && !(fill) \ | |
b9e57a38 | 63 | && subseg_text_p (now_seg)) \ |
252b5132 RH |
64 | { \ |
65 | char *p; \ | |
66 | p = frag_var (rs_align_code, 1 << n, 1, (relax_substateT) 1024, \ | |
67 | (symbolS *) 0, (offsetT) (n), (char *) 0); \ | |
68 | *p = 0x00; \ | |
69 | goto around; \ | |
70 | } | |
71 | ||
72 | /* We require .word, et. al., to be aligned correctly. */ | |
73 | #define md_cons_align(nbytes) sparc_cons_align (nbytes) | |
74 | extern void sparc_cons_align PARAMS ((int)); | |
75 | #define HANDLE_ALIGN(fragp) sparc_handle_align (fragp) | |
76 | extern void sparc_handle_align PARAMS ((struct frag *)); | |
77 | ||
78 | #if defined (OBJ_ELF) || defined (OBJ_AOUT) | |
79 | ||
80 | /* This expression evaluates to false if the relocation is for a local | |
81 | object for which we still want to do the relocation at runtime. | |
82 | True if we are willing to perform this relocation while building | |
83 | the .o file. | |
84 | ||
85 | If the reloc is against an externally visible symbol, then the | |
86 | a.out assembler should not do the relocation if generating PIC, and | |
87 | the ELF assembler should never do the relocation. */ | |
88 | ||
89 | #ifdef OBJ_ELF | |
90 | #define obj_relocate_extern 0 | |
91 | #else | |
92 | #define obj_relocate_extern (! sparc_pic_code) | |
93 | #endif | |
94 | ||
95 | #define TC_RELOC_RTSYM_LOC_FIXUP(FIX) \ | |
96 | (obj_relocate_extern \ | |
97 | || (FIX)->fx_addsy == NULL \ | |
98 | || (! S_IS_EXTERNAL ((FIX)->fx_addsy) \ | |
99 | && ! S_IS_WEAK ((FIX)->fx_addsy) \ | |
100 | && S_IS_DEFINED ((FIX)->fx_addsy) \ | |
101 | && ! S_IS_COMMON ((FIX)->fx_addsy))) | |
102 | #endif | |
103 | ||
104 | /* I know that "call 0" fails in sparc-coff if this doesn't return 1. I | |
105 | don't know about other relocation types, or other formats, yet. */ | |
106 | #ifdef OBJ_COFF | |
107 | #define TC_FORCE_RELOCATION(FIXP) \ | |
108 | ((FIXP)->fx_r_type == BFD_RELOC_32_PCREL_S2 \ | |
109 | && ((FIXP)->fx_addsy == 0 \ | |
110 | || S_GET_SEGMENT ((FIXP)->fx_addsy) == absolute_section)) | |
111 | #define RELOC_REQUIRES_SYMBOL | |
112 | #endif | |
113 | ||
114 | #ifdef OBJ_ELF | |
115 | #define TC_FORCE_RELOCATION(fixp) elf32_sparc_force_relocation(fixp) | |
116 | extern int elf32_sparc_force_relocation PARAMS ((struct fix *)); | |
117 | #endif | |
118 | ||
119 | #define MD_APPLY_FIX3 | |
120 | #define TC_HANDLES_FX_DONE | |
121 | ||
122 | #ifdef OBJ_ELF | |
123 | /* Keep relocations against global symbols. Don't turn them into | |
124 | relocations against sections. This is required for the dynamic | |
125 | linker to operate properly. When generating PIC, we need to keep | |
153b546a ILT |
126 | any non PC relative reloc. The PIC part of this test must be |
127 | parallel to the code in tc_gen_reloc which converts relocations to | |
128 | GOT relocations. */ | |
252b5132 RH |
129 | #define tc_fix_adjustable(FIX) \ |
130 | (! S_IS_EXTERNAL ((FIX)->fx_addsy) \ | |
131 | && ! S_IS_WEAK ((FIX)->fx_addsy) \ | |
d2e71411 ILT |
132 | && (FIX)->fx_r_type != BFD_RELOC_VTABLE_INHERIT \ |
133 | && (FIX)->fx_r_type != BFD_RELOC_VTABLE_ENTRY \ | |
252b5132 | 134 | && (! sparc_pic_code \ |
a1f2d742 ILT |
135 | || ((FIX)->fx_r_type != BFD_RELOC_HI22 \ |
136 | && (FIX)->fx_r_type != BFD_RELOC_LO10 \ | |
137 | && (FIX)->fx_r_type != BFD_RELOC_SPARC13 \ | |
138 | && ((FIX)->fx_r_type != BFD_RELOC_32_PCREL_S2 \ | |
139 | || (S_IS_DEFINED ((FIX)->fx_addsy) \ | |
140 | && ! S_IS_COMMON ((FIX)->fx_addsy) \ | |
141 | && ! S_IS_EXTERNAL ((FIX)->fx_addsy) \ | |
142 | && ! S_IS_WEAK ((FIX)->fx_addsy))) \ | |
143 | && ((FIX)->fx_pcrel \ | |
144 | || ((FIX)->fx_subsy != NULL \ | |
145 | && (S_GET_SEGMENT ((FIX)->fx_subsy) \ | |
146 | == S_GET_SEGMENT ((FIX)->fx_addsy))) \ | |
147 | || S_IS_LOCAL ((FIX)->fx_addsy))))) | |
6d8809aa RH |
148 | |
149 | /* Finish up the entire symtab. */ | |
150 | #define tc_adjust_symtab() sparc_adjust_symtab () | |
151 | extern void sparc_adjust_symtab PARAMS ((void)); | |
252b5132 RH |
152 | #endif |
153 | ||
154 | #ifdef OBJ_AOUT | |
155 | /* When generating PIC code, we must not adjust any reloc which will | |
156 | turn into a reloc against the global offset table, nor any reloc | |
157 | which we will need if a symbol is overridden. */ | |
158 | #define tc_fix_adjustable(FIX) \ | |
159 | (! sparc_pic_code \ | |
160 | || ((FIX)->fx_pcrel \ | |
161 | && ((FIX)->fx_addsy == NULL \ | |
162 | || (! S_IS_EXTERNAL ((FIX)->fx_addsy) \ | |
163 | && ! S_IS_WEAK ((FIX)->fx_addsy)))) \ | |
164 | || (FIX)->fx_r_type == BFD_RELOC_16 \ | |
165 | || (FIX)->fx_r_type == BFD_RELOC_32) | |
166 | #endif | |
167 | ||
168 | #define elf_tc_final_processing sparc_elf_final_processing | |
169 | extern void sparc_elf_final_processing PARAMS ((void)); | |
170 | ||
171 | #define md_operand(x) | |
172 | ||
173 | extern void sparc_md_end PARAMS ((void)); | |
174 | #define md_end() sparc_md_end () | |
175 | ||
176 | #endif | |
177 | ||
178 | #define TC_CONS_FIX_NEW cons_fix_new_sparc | |
179 | extern void cons_fix_new_sparc | |
180 | PARAMS ((struct frag *, int, unsigned int, struct expressionS *)); | |
181 | ||
dabe3bbc RH |
182 | #define TC_FIX_TYPE valueT |
183 | ||
184 | #define TC_INIT_FIX_DATA(X) \ | |
185 | do \ | |
186 | { \ | |
187 | (X)->tc_fix_data = 0; \ | |
188 | } \ | |
189 | while(0) | |
190 | ||
191 | #define TC_FIX_DATA_PRINT(FILE, FIXP) \ | |
192 | do \ | |
193 | { \ | |
194 | fprintf((FILE), "addend2=%ld\n", \ | |
195 | (unsigned long) (FIXP)->tc_fix_data); \ | |
196 | } \ | |
197 | while(0) | |
198 | ||
252b5132 | 199 | /* end of tc-sparc.h */ |