Commit | Line | Data |
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252b5132 | 1 | /* tc-ppc.h -- Header file for tc-ppc.c. |
09b935ac | 2 | Copyright 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, |
2132e3a3 | 3 | 2004, 2005 Free Software Foundation, Inc. |
252b5132 RH |
4 | Written by Ian Lance Taylor, Cygnus Support. |
5 | ||
6 | This file is part of GAS, the GNU Assembler. | |
7 | ||
8 | GAS is free software; you can redistribute it and/or modify | |
9 | it under the terms of the GNU General Public License as published by | |
10 | the Free Software Foundation; either version 2, or (at your option) | |
11 | any later version. | |
12 | ||
13 | GAS is distributed in the hope that it will be useful, | |
14 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | GNU General Public License for more details. | |
17 | ||
18 | You should have received a copy of the GNU General Public License | |
19 | along with GAS; see the file COPYING. If not, write to the Free | |
4b4da160 NC |
20 | Software Foundation, 51 Franklin Street - Fifth Floor, Boston, MA |
21 | 02110-1301, USA. */ | |
252b5132 RH |
22 | |
23 | #define TC_PPC | |
24 | ||
252b5132 | 25 | struct fix; |
252b5132 RH |
26 | |
27 | /* Set the endianness we are using. Default to big endian. */ | |
28 | #ifndef TARGET_BYTES_BIG_ENDIAN | |
29 | #define TARGET_BYTES_BIG_ENDIAN 1 | |
30 | #endif | |
31 | ||
252b5132 RH |
32 | /* If OBJ_COFF is defined, and TE_PE is not defined, we are assembling |
33 | XCOFF for AIX or PowerMac. If TE_PE is defined, we are assembling | |
34 | COFF for Windows NT. */ | |
35 | ||
36 | #ifdef OBJ_COFF | |
37 | #ifndef TE_PE | |
38 | #define OBJ_XCOFF | |
39 | #endif | |
40 | #endif | |
41 | ||
42 | /* The target BFD architecture. */ | |
43 | #define TARGET_ARCH (ppc_arch ()) | |
7f6d05e8 | 44 | #define TARGET_MACH (ppc_mach ()) |
252b5132 | 45 | extern enum bfd_architecture ppc_arch PARAMS ((void)); |
7f6d05e8 | 46 | extern unsigned long ppc_mach PARAMS ((void)); |
252b5132 RH |
47 | |
48 | /* Whether or not the target is big endian */ | |
49 | extern int target_big_endian; | |
50 | ||
51 | /* The target BFD format. */ | |
7f6d05e8 | 52 | #define TARGET_FORMAT (ppc_target_format ()) |
0baf16f2 | 53 | extern char *ppc_target_format PARAMS ((void)); |
252b5132 RH |
54 | |
55 | /* Permit temporary numeric labels. */ | |
56 | #define LOCAL_LABELS_FB 1 | |
57 | ||
58 | /* $ is used to refer to the current location. */ | |
59 | #define DOLLAR_DOT | |
60 | ||
61 | /* Strings do not use backslash escapes under COFF. */ | |
62 | #ifdef OBJ_COFF | |
63 | #define NO_STRING_ESCAPES | |
64 | #endif | |
65 | ||
66 | #ifdef OBJ_ELF | |
67 | #define DIFF_EXPR_OK /* foo-. gets turned into PC relative relocs */ | |
68 | #endif | |
69 | ||
70 | #if TARGET_BYTES_BIG_ENDIAN | |
71 | #define PPC_BIG_ENDIAN 1 | |
72 | #else | |
73 | #define PPC_BIG_ENDIAN 0 | |
74 | #endif | |
75 | ||
76 | /* We don't need to handle .word strangely. */ | |
77 | #define WORKING_DOT_WORD | |
78 | ||
0baf16f2 AM |
79 | #define MAX_MEM_FOR_RS_ALIGN_CODE 4 |
80 | #define HANDLE_ALIGN(FRAGP) \ | |
81 | if ((FRAGP)->fr_type == rs_align_code) \ | |
82 | { \ | |
83 | valueT count = ((FRAGP)->fr_next->fr_address \ | |
84 | - ((FRAGP)->fr_address + (FRAGP)->fr_fix)); \ | |
85 | if (count != 0 && (count & 3) == 0) \ | |
86 | { \ | |
2132e3a3 | 87 | char *dest = (FRAGP)->fr_literal + (FRAGP)->fr_fix; \ |
0baf16f2 AM |
88 | \ |
89 | (FRAGP)->fr_var = 4; \ | |
90 | if (target_big_endian) \ | |
91 | { \ | |
92 | *dest++ = 0x60; \ | |
93 | *dest++ = 0; \ | |
94 | *dest++ = 0; \ | |
95 | *dest++ = 0; \ | |
96 | } \ | |
97 | else \ | |
98 | { \ | |
99 | *dest++ = 0; \ | |
100 | *dest++ = 0; \ | |
101 | *dest++ = 0; \ | |
102 | *dest++ = 0x60; \ | |
103 | } \ | |
104 | } \ | |
105 | } | |
106 | ||
09b935ac AM |
107 | #define md_frag_check(FRAGP) \ |
108 | if ((FRAGP)->has_code \ | |
109 | && (((FRAGP)->fr_address + (FRAGP)->insn_addr) & 3) != 0) \ | |
110 | as_bad_where ((FRAGP)->fr_file, (FRAGP)->fr_line, \ | |
111 | _("instruction address is not a multiple of 4")); | |
252b5132 RH |
112 | \f |
113 | #ifdef TE_PE | |
114 | ||
115 | /* Question marks are permitted in symbol names. */ | |
116 | #define LEX_QM 1 | |
117 | ||
118 | /* Don't adjust TOC relocs. */ | |
a161fe53 | 119 | #define tc_fix_adjustable(FIX) ppc_pe_fix_adjustable (FIX) |
252b5132 RH |
120 | extern int ppc_pe_fix_adjustable PARAMS ((struct fix *)); |
121 | ||
122 | #endif | |
123 | ||
124 | #ifdef OBJ_XCOFF | |
125 | ||
126 | /* Declarations needed when generating XCOFF code. XCOFF is an | |
127 | extension of COFF, used only on the RS/6000. Rather than create an | |
128 | obj-xcoff, we just use obj-coff, and handle the extensions here in | |
129 | tc-ppc. */ | |
130 | ||
131 | /* We need to keep some information for symbols. */ | |
132 | struct ppc_tc_sy | |
133 | { | |
134 | /* We keep a few linked lists of symbols. */ | |
49309057 | 135 | symbolS *next; |
252b5132 RH |
136 | /* Non-zero if the symbol should be output. The RS/6000 assembler |
137 | only outputs symbols that are external or are mentioned in a | |
138 | .globl or .lglobl statement. */ | |
139 | int output; | |
140 | /* The symbol class. */ | |
141 | int class; | |
142 | /* The real name, if the symbol was renamed. */ | |
143 | char *real_name; | |
144 | /* For a csect symbol, the subsegment we are using. This is zero | |
145 | for symbols that are not csects. */ | |
146 | subsegT subseg; | |
147 | /* For a csect or common symbol, the alignment to use. */ | |
148 | int align; | |
149 | /* For a function symbol, a symbol whose value is the size. The | |
150 | field is NULL if there is no size. */ | |
49309057 | 151 | symbolS *size; |
252b5132 RH |
152 | /* For a csect symbol, the last symbol which has been defined in |
153 | this csect, or NULL if none have been defined so far. For a .bs | |
154 | symbol, the referenced csect symbol. */ | |
49309057 | 155 | symbolS *within; |
252b5132 RH |
156 | }; |
157 | ||
158 | #define TC_SYMFIELD_TYPE struct ppc_tc_sy | |
159 | ||
160 | /* We need an additional auxent for function symbols. */ | |
161 | #define OBJ_COFF_MAX_AUXENTRIES 2 | |
162 | ||
163 | /* Square and curly brackets are permitted in symbol names. */ | |
164 | #define LEX_BR 3 | |
165 | ||
166 | /* Canonicalize the symbol name. */ | |
167 | #define tc_canonicalize_symbol_name(name) ppc_canonicalize_symbol_name (name) | |
168 | extern char *ppc_canonicalize_symbol_name PARAMS ((char *)); | |
169 | ||
170 | /* Get the symbol class from the name. */ | |
171 | #define tc_symbol_new_hook(sym) ppc_symbol_new_hook (sym) | |
49309057 | 172 | extern void ppc_symbol_new_hook PARAMS ((symbolS *)); |
252b5132 RH |
173 | |
174 | /* Set the symbol class of a label based on the csect. */ | |
175 | #define tc_frob_label(sym) ppc_frob_label (sym) | |
49309057 | 176 | extern void ppc_frob_label PARAMS ((symbolS *)); |
252b5132 RH |
177 | |
178 | /* TOC relocs requires special handling. */ | |
a161fe53 | 179 | #define tc_fix_adjustable(FIX) ppc_fix_adjustable (FIX) |
252b5132 RH |
180 | extern int ppc_fix_adjustable PARAMS ((struct fix *)); |
181 | ||
252b5132 RH |
182 | /* We need to set the section VMA. */ |
183 | #define tc_frob_section(sec) ppc_frob_section (sec) | |
184 | extern void ppc_frob_section PARAMS ((asection *)); | |
185 | ||
186 | /* Finish up the symbol. */ | |
187 | #define tc_frob_symbol(sym, punt) punt = ppc_frob_symbol (sym) | |
49309057 | 188 | extern int ppc_frob_symbol PARAMS ((symbolS *)); |
252b5132 RH |
189 | |
190 | /* Finish up the entire symtab. */ | |
191 | #define tc_adjust_symtab() ppc_adjust_symtab () | |
192 | extern void ppc_adjust_symtab PARAMS ((void)); | |
193 | ||
2c1c4c62 GK |
194 | /* We also need to copy, in particular, the class of the symbol, |
195 | over what obj-coff would otherwise have copied. */ | |
196 | #define OBJ_COPY_SYMBOL_ATTRIBUTES(dest,src) \ | |
197 | do { \ | |
198 | if (SF_GET_GET_SEGMENT (dest)) \ | |
199 | S_SET_SEGMENT (dest, S_GET_SEGMENT (src)); \ | |
200 | symbol_get_tc (dest)->size = symbol_get_tc (src)->size; \ | |
201 | symbol_get_tc (dest)->align = symbol_get_tc (src)->align; \ | |
202 | symbol_get_tc (dest)->class = symbol_get_tc (src)->class; \ | |
203 | symbol_get_tc (dest)->within = symbol_get_tc (src)->within; \ | |
204 | } while (0) | |
205 | ||
252b5132 RH |
206 | #endif /* OBJ_XCOFF */ |
207 | ||
5ce8663f NC |
208 | extern const char ppc_symbol_chars[]; |
209 | #define tc_symbol_chars ppc_symbol_chars | |
210 | ||
252b5132 RH |
211 | #ifdef OBJ_ELF |
212 | ||
252b5132 RH |
213 | /* Support for SHF_EXCLUDE and SHT_ORDERED */ |
214 | extern int ppc_section_letter PARAMS ((int, char **)); | |
9de8d8f1 RH |
215 | extern int ppc_section_type PARAMS ((char *, size_t)); |
216 | extern int ppc_section_word PARAMS ((char *, size_t)); | |
252b5132 RH |
217 | extern int ppc_section_flags PARAMS ((int, int, int)); |
218 | ||
219 | #define md_elf_section_letter(LETTER, PTR_MSG) ppc_section_letter (LETTER, PTR_MSG) | |
9de8d8f1 RH |
220 | #define md_elf_section_type(STR, LEN) ppc_section_type (STR, LEN) |
221 | #define md_elf_section_word(STR, LEN) ppc_section_word (STR, LEN) | |
252b5132 RH |
222 | #define md_elf_section_flags(FLAGS, ATTR, TYPE) ppc_section_flags (FLAGS, ATTR, TYPE) |
223 | ||
252b5132 RH |
224 | #define tc_comment_chars ppc_comment_chars |
225 | extern const char *ppc_comment_chars; | |
226 | ||
81d4177b | 227 | /* Keep relocations relative to the GOT, or non-PC relative. */ |
a161fe53 | 228 | #define tc_fix_adjustable(FIX) ppc_fix_adjustable (FIX) |
0baf16f2 | 229 | extern int ppc_fix_adjustable PARAMS ((struct fix *)); |
252b5132 | 230 | |
55cf6793 | 231 | /* Values passed to md_apply_fix don't include symbol values. */ |
a161fe53 | 232 | #define MD_APPLY_SYM_VALUE(FIX) 0 |
252b5132 | 233 | |
7e8d4ab4 AM |
234 | #define tc_frob_file_before_adjust ppc_frob_file_before_adjust |
235 | extern void ppc_frob_file_before_adjust PARAMS ((void)); | |
0baf16f2 | 236 | |
252b5132 RH |
237 | #endif /* OBJ_ELF */ |
238 | ||
5f5c1f75 | 239 | #if defined (OBJ_ELF) || defined (OBJ_XCOFF) |
a161fe53 AM |
240 | #define TC_FORCE_RELOCATION(FIX) ppc_force_relocation (FIX) |
241 | extern int ppc_force_relocation PARAMS ((struct fix *)); | |
5f5c1f75 | 242 | #endif |
a161fe53 | 243 | |
252b5132 | 244 | /* call md_pcrel_from_section, not md_pcrel_from */ |
a161fe53 | 245 | #define MD_PCREL_FROM_SECTION(FIX, SEC) md_pcrel_from_section(FIX, SEC) |
252b5132 RH |
246 | extern long md_pcrel_from_section PARAMS ((struct fix *, segT)); |
247 | ||
9497f5ac | 248 | #define md_parse_name(name, exp, mode, c) ppc_parse_name (name, exp) |
252b5132 RH |
249 | extern int ppc_parse_name PARAMS ((const char *, struct expressionS *)); |
250 | ||
251 | #define md_operand(x) | |
6a0c61b7 EZ |
252 | |
253 | #define md_cleanup() ppc_cleanup () | |
254 | extern void ppc_cleanup PARAMS ((void)); | |
75e21f08 JJ |
255 | |
256 | #define TARGET_USE_CFIPOP 1 | |
257 | ||
258 | #define tc_cfi_frame_initial_instructions ppc_cfi_frame_initial_instructions | |
259 | extern void ppc_cfi_frame_initial_instructions PARAMS ((void)); | |
260 | ||
261 | #define tc_regname_to_dw2regnum tc_ppc_regname_to_dw2regnum | |
1df69f4f | 262 | extern int tc_ppc_regname_to_dw2regnum PARAMS ((char *regname)); |
75e21f08 JJ |
263 | |
264 | extern int ppc_cie_data_alignment; | |
265 | ||
266 | #define DWARF2_LINE_MIN_INSN_LENGTH 4 | |
267 | #define DWARF2_DEFAULT_RETURN_COLUMN 0x41 | |
268 | #define DWARF2_CIE_DATA_ALIGNMENT ppc_cie_data_alignment |