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252b5132 | 1 | /* tc-ppc.h -- Header file for tc-ppc.c. |
b90efa5b | 2 | Copyright (C) 1994-2015 Free Software Foundation, Inc. |
252b5132 RH |
3 | Written by Ian Lance Taylor, Cygnus Support. |
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 | |
ec2655a6 | 9 | the Free Software Foundation; either version 3, or (at your option) |
252b5132 RH |
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 the Free | |
4b4da160 NC |
19 | Software Foundation, 51 Franklin Street - Fifth Floor, Boston, MA |
20 | 02110-1301, USA. */ | |
252b5132 RH |
21 | |
22 | #define TC_PPC | |
23 | ||
fa452fa6 PB |
24 | #include "opcode/ppc.h" |
25 | ||
252b5132 | 26 | struct fix; |
252b5132 RH |
27 | |
28 | /* Set the endianness we are using. Default to big endian. */ | |
29 | #ifndef TARGET_BYTES_BIG_ENDIAN | |
30 | #define TARGET_BYTES_BIG_ENDIAN 1 | |
31 | #endif | |
32 | ||
252b5132 RH |
33 | /* If OBJ_COFF is defined, and TE_PE is not defined, we are assembling |
34 | XCOFF for AIX or PowerMac. If TE_PE is defined, we are assembling | |
35 | COFF for Windows NT. */ | |
36 | ||
37 | #ifdef OBJ_COFF | |
38 | #ifndef TE_PE | |
39 | #define OBJ_XCOFF | |
40 | #endif | |
41 | #endif | |
42 | ||
43 | /* The target BFD architecture. */ | |
44 | #define TARGET_ARCH (ppc_arch ()) | |
7f6d05e8 | 45 | #define TARGET_MACH (ppc_mach ()) |
98027b10 AM |
46 | extern enum bfd_architecture ppc_arch (void); |
47 | extern unsigned long ppc_mach (void); | |
252b5132 RH |
48 | |
49 | /* Whether or not the target is big endian */ | |
50 | extern int target_big_endian; | |
51 | ||
52 | /* The target BFD format. */ | |
7f6d05e8 | 53 | #define TARGET_FORMAT (ppc_target_format ()) |
98027b10 | 54 | extern char *ppc_target_format (void); |
252b5132 RH |
55 | |
56 | /* Permit temporary numeric labels. */ | |
57 | #define LOCAL_LABELS_FB 1 | |
58 | ||
59 | /* $ is used to refer to the current location. */ | |
60 | #define DOLLAR_DOT | |
61 | ||
62 | /* Strings do not use backslash escapes under COFF. */ | |
63 | #ifdef OBJ_COFF | |
64 | #define NO_STRING_ESCAPES | |
65 | #endif | |
66 | ||
67 | #ifdef OBJ_ELF | |
68 | #define DIFF_EXPR_OK /* foo-. gets turned into PC relative relocs */ | |
69 | #endif | |
70 | ||
71 | #if TARGET_BYTES_BIG_ENDIAN | |
72 | #define PPC_BIG_ENDIAN 1 | |
73 | #else | |
74 | #define PPC_BIG_ENDIAN 0 | |
75 | #endif | |
76 | ||
77 | /* We don't need to handle .word strangely. */ | |
78 | #define WORKING_DOT_WORD | |
79 | ||
0baf16f2 AM |
80 | #define MAX_MEM_FOR_RS_ALIGN_CODE 4 |
81 | #define HANDLE_ALIGN(FRAGP) \ | |
3aeeedbb AM |
82 | if ((FRAGP)->fr_type == rs_align_code) \ |
83 | ppc_handle_align (FRAGP); | |
84 | ||
85 | extern void ppc_handle_align (struct frag *); | |
b9c361e0 | 86 | extern void ppc_frag_check (struct frag *); |
3aeeedbb AM |
87 | |
88 | #define SUB_SEGMENT_ALIGN(SEG, FRCHAIN) 0 | |
0baf16f2 | 89 | |
b9c361e0 | 90 | #define md_frag_check(FRAGP) ppc_frag_check (FRAGP) |
783de163 AM |
91 | |
92 | /* Arrange to store the value of ppc_cpu at the site of a fixup | |
93 | for later use in md_apply_fix. */ | |
94 | struct _ppc_fix_extra | |
95 | { | |
fa452fa6 | 96 | ppc_cpu_t ppc_cpu; |
783de163 AM |
97 | }; |
98 | ||
fa452fa6 | 99 | extern ppc_cpu_t ppc_cpu; |
783de163 AM |
100 | |
101 | #define TC_FIX_TYPE struct _ppc_fix_extra | |
102 | #define TC_INIT_FIX_DATA(FIXP) \ | |
103 | do { (FIXP)->tc_fix_data.ppc_cpu = ppc_cpu; } while (0) | |
252b5132 RH |
104 | \f |
105 | #ifdef TE_PE | |
106 | ||
107 | /* Question marks are permitted in symbol names. */ | |
108 | #define LEX_QM 1 | |
109 | ||
110 | /* Don't adjust TOC relocs. */ | |
a161fe53 | 111 | #define tc_fix_adjustable(FIX) ppc_pe_fix_adjustable (FIX) |
98027b10 | 112 | extern int ppc_pe_fix_adjustable (struct fix *); |
252b5132 RH |
113 | |
114 | #endif | |
115 | ||
116 | #ifdef OBJ_XCOFF | |
117 | ||
118 | /* Declarations needed when generating XCOFF code. XCOFF is an | |
119 | extension of COFF, used only on the RS/6000. Rather than create an | |
120 | obj-xcoff, we just use obj-coff, and handle the extensions here in | |
121 | tc-ppc. */ | |
122 | ||
123 | /* We need to keep some information for symbols. */ | |
124 | struct ppc_tc_sy | |
125 | { | |
126 | /* We keep a few linked lists of symbols. */ | |
49309057 | 127 | symbolS *next; |
85645aed TG |
128 | /* The real name, if the symbol was renamed. */ |
129 | char *real_name; | |
252b5132 RH |
130 | /* Non-zero if the symbol should be output. The RS/6000 assembler |
131 | only outputs symbols that are external or are mentioned in a | |
132 | .globl or .lglobl statement. */ | |
85645aed | 133 | unsigned char output; |
252b5132 | 134 | /* The symbol class. */ |
85645aed TG |
135 | short symbol_class; |
136 | /* For a csect or common symbol, the alignment to use. */ | |
137 | unsigned char align; | |
252b5132 RH |
138 | /* For a csect symbol, the subsegment we are using. This is zero |
139 | for symbols that are not csects. */ | |
140 | subsegT subseg; | |
252b5132 | 141 | /* For a csect symbol, the last symbol which has been defined in |
2fb4b302 TG |
142 | this csect, or NULL if none have been defined so far. |
143 | For a .bs symbol, the referenced csect symbol. | |
144 | For a label, the enclosing csect. */ | |
49309057 | 145 | symbolS *within; |
85645aed TG |
146 | union |
147 | { | |
148 | /* For a function symbol, a symbol whose value is the size. The | |
149 | field is NULL if there is no size. */ | |
150 | symbolS *size; | |
151 | /* For a dwarf symbol, the corresponding dwarf subsection. */ | |
152 | struct dw_subsection *dw; | |
153 | } u; | |
252b5132 RH |
154 | }; |
155 | ||
156 | #define TC_SYMFIELD_TYPE struct ppc_tc_sy | |
157 | ||
158 | /* We need an additional auxent for function symbols. */ | |
159 | #define OBJ_COFF_MAX_AUXENTRIES 2 | |
160 | ||
161 | /* Square and curly brackets are permitted in symbol names. */ | |
162 | #define LEX_BR 3 | |
163 | ||
164 | /* Canonicalize the symbol name. */ | |
165 | #define tc_canonicalize_symbol_name(name) ppc_canonicalize_symbol_name (name) | |
98027b10 | 166 | extern char *ppc_canonicalize_symbol_name (char *); |
252b5132 RH |
167 | |
168 | /* Get the symbol class from the name. */ | |
169 | #define tc_symbol_new_hook(sym) ppc_symbol_new_hook (sym) | |
98027b10 | 170 | extern void ppc_symbol_new_hook (symbolS *); |
252b5132 RH |
171 | |
172 | /* Set the symbol class of a label based on the csect. */ | |
173 | #define tc_frob_label(sym) ppc_frob_label (sym) | |
98027b10 | 174 | extern void ppc_frob_label (symbolS *); |
252b5132 RH |
175 | |
176 | /* TOC relocs requires special handling. */ | |
a161fe53 | 177 | #define tc_fix_adjustable(FIX) ppc_fix_adjustable (FIX) |
98027b10 | 178 | extern int ppc_fix_adjustable (struct fix *); |
252b5132 | 179 | |
252b5132 RH |
180 | /* We need to set the section VMA. */ |
181 | #define tc_frob_section(sec) ppc_frob_section (sec) | |
98027b10 | 182 | extern void ppc_frob_section (asection *); |
252b5132 RH |
183 | |
184 | /* Finish up the symbol. */ | |
185 | #define tc_frob_symbol(sym, punt) punt = ppc_frob_symbol (sym) | |
98027b10 | 186 | extern int ppc_frob_symbol (symbolS *); |
252b5132 RH |
187 | |
188 | /* Finish up the entire symtab. */ | |
189 | #define tc_adjust_symtab() ppc_adjust_symtab () | |
98027b10 | 190 | extern void ppc_adjust_symtab (void); |
252b5132 | 191 | |
2c1c4c62 GK |
192 | /* We also need to copy, in particular, the class of the symbol, |
193 | over what obj-coff would otherwise have copied. */ | |
194 | #define OBJ_COPY_SYMBOL_ATTRIBUTES(dest,src) \ | |
195 | do { \ | |
196 | if (SF_GET_GET_SEGMENT (dest)) \ | |
197 | S_SET_SEGMENT (dest, S_GET_SEGMENT (src)); \ | |
85645aed | 198 | symbol_get_tc (dest)->u = symbol_get_tc (src)->u; \ |
2c1c4c62 | 199 | symbol_get_tc (dest)->align = symbol_get_tc (src)->align; \ |
96d56e9f | 200 | symbol_get_tc (dest)->symbol_class = symbol_get_tc (src)->symbol_class; \ |
2c1c4c62 GK |
201 | symbol_get_tc (dest)->within = symbol_get_tc (src)->within; \ |
202 | } while (0) | |
203 | ||
85645aed TG |
204 | extern void ppc_xcoff_end (void); |
205 | #define md_end ppc_xcoff_end | |
206 | ||
2fb4b302 TG |
207 | #define tc_new_dot_label(sym) ppc_new_dot_label (sym) |
208 | extern void ppc_new_dot_label (symbolS *); | |
209 | ||
252b5132 RH |
210 | #endif /* OBJ_XCOFF */ |
211 | ||
5ce8663f NC |
212 | extern const char ppc_symbol_chars[]; |
213 | #define tc_symbol_chars ppc_symbol_chars | |
214 | ||
252b5132 RH |
215 | #ifdef OBJ_ELF |
216 | ||
18ae9cc1 | 217 | /* Support for SHT_ORDERED */ |
98027b10 | 218 | extern int ppc_section_type (char *, size_t); |
01e1a5bc | 219 | extern int ppc_section_flags (flagword, bfd_vma, int); |
252b5132 | 220 | |
9de8d8f1 | 221 | #define md_elf_section_type(STR, LEN) ppc_section_type (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) |
98027b10 | 229 | extern int ppc_fix_adjustable (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 | |
62ebcb5c AM |
234 | #define TC_PARSE_CONS_EXPRESSION(EXP, NBYTES) \ |
235 | ppc_elf_parse_cons (EXP, NBYTES) | |
236 | extern bfd_reloc_code_real_type ppc_elf_parse_cons (expressionS *, | |
237 | unsigned int); | |
bf7279d5 AM |
238 | #define TC_CONS_FIX_CHECK(EXP, NBYTES, FIX) \ |
239 | ppc_elf_cons_fix_check (EXP, NBYTES, FIX) | |
240 | extern void ppc_elf_cons_fix_check (expressionS *, unsigned int, struct fix *); | |
241 | ||
7e8d4ab4 | 242 | #define tc_frob_file_before_adjust ppc_frob_file_before_adjust |
98027b10 | 243 | extern void ppc_frob_file_before_adjust (void); |
0baf16f2 | 244 | |
a38a07e0 AM |
245 | #define tc_adjust_symtab() ppc_elf_adjust_symtab () |
246 | extern void ppc_elf_adjust_symtab (void); | |
247 | ||
ee67d69a AM |
248 | extern void ppc_elf_end (void); |
249 | #define md_end ppc_elf_end | |
250 | ||
252b5132 RH |
251 | #endif /* OBJ_ELF */ |
252 | ||
5f5c1f75 | 253 | #if defined (OBJ_ELF) || defined (OBJ_XCOFF) |
a161fe53 | 254 | #define TC_FORCE_RELOCATION(FIX) ppc_force_relocation (FIX) |
98027b10 | 255 | extern int ppc_force_relocation (struct fix *); |
5f5c1f75 | 256 | #endif |
a161fe53 | 257 | |
252b5132 | 258 | /* call md_pcrel_from_section, not md_pcrel_from */ |
a161fe53 | 259 | #define MD_PCREL_FROM_SECTION(FIX, SEC) md_pcrel_from_section(FIX, SEC) |
98027b10 | 260 | extern long md_pcrel_from_section (struct fix *, segT); |
252b5132 | 261 | |
9497f5ac | 262 | #define md_parse_name(name, exp, mode, c) ppc_parse_name (name, exp) |
98027b10 | 263 | extern int ppc_parse_name (const char *, struct expressionS *); |
252b5132 RH |
264 | |
265 | #define md_operand(x) | |
6a0c61b7 EZ |
266 | |
267 | #define md_cleanup() ppc_cleanup () | |
98027b10 | 268 | extern void ppc_cleanup (void); |
75e21f08 | 269 | |
c322dea4 AM |
270 | #if (defined TE_AIX5 || defined TE_AIX \ |
271 | || defined TE_FreeBSD || defined TE_NetBSD || defined TE_LYNX) | |
38462edf JJ |
272 | /* ppc uses different register numbers between .eh_frame and .debug_frame. |
273 | This macro translates the .eh_frame register numbers to .debug_frame | |
274 | register numbers. */ | |
c322dea4 AM |
275 | #define md_reg_eh_frame_to_debug_frame(regno) \ |
276 | ((regno) == 70 ? 64 /* cr2 */ \ | |
277 | : (regno) == 65 ? 108 /* lr */ \ | |
278 | : (regno) == 66 ? 109 /* ctr */ \ | |
279 | : (regno) >= 68 && (regno) <= 75 ? (regno) + 86 - 68 /* crN */ \ | |
280 | : (regno) == 76 ? 101 /* xer */ \ | |
281 | : (regno) >= 77 && (regno) <= 108 ? (regno) + 1124 - 77 /* vrN */ \ | |
282 | : (regno) == 109 ? 356 /* vrsave */ \ | |
283 | : (regno) == 110 ? 67 /* vscr */ \ | |
284 | : (regno) == 111 ? 99 /* spe_acc */ \ | |
285 | : (regno) == 112 ? 612 /* spefscr */ \ | |
286 | : (regno)) | |
287 | #endif | |
38462edf | 288 | |
75e21f08 JJ |
289 | #define TARGET_USE_CFIPOP 1 |
290 | ||
291 | #define tc_cfi_frame_initial_instructions ppc_cfi_frame_initial_instructions | |
98027b10 | 292 | extern void ppc_cfi_frame_initial_instructions (void); |
75e21f08 JJ |
293 | |
294 | #define tc_regname_to_dw2regnum tc_ppc_regname_to_dw2regnum | |
98027b10 | 295 | extern int tc_ppc_regname_to_dw2regnum (char *); |
75e21f08 JJ |
296 | |
297 | extern int ppc_cie_data_alignment; | |
298 | ||
8fbf7334 JL |
299 | extern int ppc_dwarf2_line_min_insn_length; |
300 | ||
301 | #define DWARF2_LINE_MIN_INSN_LENGTH ppc_dwarf2_line_min_insn_length | |
75e21f08 JJ |
302 | #define DWARF2_DEFAULT_RETURN_COLUMN 0x41 |
303 | #define DWARF2_CIE_DATA_ALIGNMENT ppc_cie_data_alignment |