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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 | ||
38 | #if 0 | |
39 | #ifdef TE_SPARCAOUT | |
40 | /* Bi-endian support may eventually be unconditional, but until things are | |
41 | working well it's only provided for targets that need it. */ | |
42 | #define SPARC_BIENDIAN | |
43 | #endif | |
44 | #endif | |
45 | /* Make it unconditional and check if -EL is valid after option parsing */ | |
46 | #define SPARC_BIENDIAN | |
47 | ||
48 | #define WORKING_DOT_WORD | |
49 | ||
50 | #define md_convert_frag(b,s,f) {as_fatal (_("sparc convert_frag\n"));} | |
51 | #define md_estimate_size_before_relax(f,s) \ | |
52 | (as_fatal(_("estimate_size_before_relax called")),1) | |
53 | ||
54 | #define LISTING_HEADER "SPARC GAS " | |
55 | ||
56 | extern int sparc_pic_code; | |
57 | ||
58 | #define md_do_align(n, fill, len, max, around) \ | |
59 | if ((n) && (n) <= 10 && !need_pass_2 && !(fill) \ | |
60 | && now_seg != data_section && now_seg != bss_section) \ | |
61 | { \ | |
62 | char *p; \ | |
63 | p = frag_var (rs_align_code, 1 << n, 1, (relax_substateT) 1024, \ | |
64 | (symbolS *) 0, (offsetT) (n), (char *) 0); \ | |
65 | *p = 0x00; \ | |
66 | goto around; \ | |
67 | } | |
68 | ||
69 | /* We require .word, et. al., to be aligned correctly. */ | |
70 | #define md_cons_align(nbytes) sparc_cons_align (nbytes) | |
71 | extern void sparc_cons_align PARAMS ((int)); | |
72 | #define HANDLE_ALIGN(fragp) sparc_handle_align (fragp) | |
73 | extern void sparc_handle_align PARAMS ((struct frag *)); | |
74 | ||
75 | #if defined (OBJ_ELF) || defined (OBJ_AOUT) | |
76 | ||
77 | /* This expression evaluates to false if the relocation is for a local | |
78 | object for which we still want to do the relocation at runtime. | |
79 | True if we are willing to perform this relocation while building | |
80 | the .o file. | |
81 | ||
82 | If the reloc is against an externally visible symbol, then the | |
83 | a.out assembler should not do the relocation if generating PIC, and | |
84 | the ELF assembler should never do the relocation. */ | |
85 | ||
86 | #ifdef OBJ_ELF | |
87 | #define obj_relocate_extern 0 | |
88 | #else | |
89 | #define obj_relocate_extern (! sparc_pic_code) | |
90 | #endif | |
91 | ||
92 | #define TC_RELOC_RTSYM_LOC_FIXUP(FIX) \ | |
93 | (obj_relocate_extern \ | |
94 | || (FIX)->fx_addsy == NULL \ | |
95 | || (! S_IS_EXTERNAL ((FIX)->fx_addsy) \ | |
96 | && ! S_IS_WEAK ((FIX)->fx_addsy) \ | |
97 | && S_IS_DEFINED ((FIX)->fx_addsy) \ | |
98 | && ! S_IS_COMMON ((FIX)->fx_addsy))) | |
99 | #endif | |
100 | ||
101 | /* I know that "call 0" fails in sparc-coff if this doesn't return 1. I | |
102 | don't know about other relocation types, or other formats, yet. */ | |
103 | #ifdef OBJ_COFF | |
104 | #define TC_FORCE_RELOCATION(FIXP) \ | |
105 | ((FIXP)->fx_r_type == BFD_RELOC_32_PCREL_S2 \ | |
106 | && ((FIXP)->fx_addsy == 0 \ | |
107 | || S_GET_SEGMENT ((FIXP)->fx_addsy) == absolute_section)) | |
108 | #define RELOC_REQUIRES_SYMBOL | |
109 | #endif | |
110 | ||
111 | #ifdef OBJ_ELF | |
112 | #define TC_FORCE_RELOCATION(fixp) elf32_sparc_force_relocation(fixp) | |
113 | extern int elf32_sparc_force_relocation PARAMS ((struct fix *)); | |
114 | #endif | |
115 | ||
116 | #define MD_APPLY_FIX3 | |
117 | #define TC_HANDLES_FX_DONE | |
118 | ||
119 | #ifdef OBJ_ELF | |
120 | /* Keep relocations against global symbols. Don't turn them into | |
121 | relocations against sections. This is required for the dynamic | |
122 | linker to operate properly. When generating PIC, we need to keep | |
123 | any non PC relative reloc. */ | |
124 | #define tc_fix_adjustable(FIX) \ | |
125 | (! S_IS_EXTERNAL ((FIX)->fx_addsy) \ | |
126 | && ! S_IS_WEAK ((FIX)->fx_addsy) \ | |
127 | && (! sparc_pic_code \ | |
128 | || (FIX)->fx_pcrel \ | |
129 | || ((FIX)->fx_subsy != NULL \ | |
130 | && (S_GET_SEGMENT ((FIX)->fx_subsy) \ | |
131 | == S_GET_SEGMENT ((FIX)->fx_addsy))) \ | |
132 | || strchr (S_GET_NAME ((FIX)->fx_addsy), '\001') != NULL \ | |
133 | || strchr (S_GET_NAME ((FIX)->fx_addsy), '\002') != NULL)) | |
134 | #endif | |
135 | ||
136 | #ifdef OBJ_AOUT | |
137 | /* When generating PIC code, we must not adjust any reloc which will | |
138 | turn into a reloc against the global offset table, nor any reloc | |
139 | which we will need if a symbol is overridden. */ | |
140 | #define tc_fix_adjustable(FIX) \ | |
141 | (! sparc_pic_code \ | |
142 | || ((FIX)->fx_pcrel \ | |
143 | && ((FIX)->fx_addsy == NULL \ | |
144 | || (! S_IS_EXTERNAL ((FIX)->fx_addsy) \ | |
145 | && ! S_IS_WEAK ((FIX)->fx_addsy)))) \ | |
146 | || (FIX)->fx_r_type == BFD_RELOC_16 \ | |
147 | || (FIX)->fx_r_type == BFD_RELOC_32) | |
148 | #endif | |
149 | ||
150 | #define elf_tc_final_processing sparc_elf_final_processing | |
151 | extern void sparc_elf_final_processing PARAMS ((void)); | |
152 | ||
153 | #define md_operand(x) | |
154 | ||
155 | extern void sparc_md_end PARAMS ((void)); | |
156 | #define md_end() sparc_md_end () | |
157 | ||
158 | #endif | |
159 | ||
160 | #define TC_CONS_FIX_NEW cons_fix_new_sparc | |
161 | extern void cons_fix_new_sparc | |
162 | PARAMS ((struct frag *, int, unsigned int, struct expressionS *)); | |
163 | ||
164 | /* end of tc-sparc.h */ |