Commit | Line | Data |
---|---|---|
252b5132 | 1 | /* tc-ppc.h -- Header file for tc-ppc.c. |
b3adc24a | 2 | Copyright (C) 1994-2020 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 ()) |
e0471c16 | 54 | extern const 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 | |
16d87673 | 64 | #define TC_STRING_ESCAPES 0 |
252b5132 RH |
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 | ||
22f72c48 AM |
85 | extern unsigned int ppc_nop_select (void); |
86 | #define NOP_OPCODE ppc_nop_select () | |
87 | ||
3aeeedbb | 88 | extern void ppc_handle_align (struct frag *); |
b9c361e0 | 89 | extern void ppc_frag_check (struct frag *); |
3aeeedbb | 90 | |
f29cf775 | 91 | #ifdef OBJ_ELF |
3aeeedbb | 92 | #define SUB_SEGMENT_ALIGN(SEG, FRCHAIN) 0 |
f29cf775 | 93 | #endif |
0baf16f2 | 94 | |
b9c361e0 | 95 | #define md_frag_check(FRAGP) ppc_frag_check (FRAGP) |
783de163 AM |
96 | |
97 | /* Arrange to store the value of ppc_cpu at the site of a fixup | |
98 | for later use in md_apply_fix. */ | |
99 | struct _ppc_fix_extra | |
100 | { | |
fa452fa6 | 101 | ppc_cpu_t ppc_cpu; |
783de163 AM |
102 | }; |
103 | ||
fa452fa6 | 104 | extern ppc_cpu_t ppc_cpu; |
783de163 AM |
105 | |
106 | #define TC_FIX_TYPE struct _ppc_fix_extra | |
107 | #define TC_INIT_FIX_DATA(FIXP) \ | |
108 | do { (FIXP)->tc_fix_data.ppc_cpu = ppc_cpu; } while (0) | |
252b5132 RH |
109 | \f |
110 | #ifdef TE_PE | |
111 | ||
112 | /* Question marks are permitted in symbol names. */ | |
113 | #define LEX_QM 1 | |
114 | ||
115 | /* Don't adjust TOC relocs. */ | |
a161fe53 | 116 | #define tc_fix_adjustable(FIX) ppc_pe_fix_adjustable (FIX) |
98027b10 | 117 | extern int ppc_pe_fix_adjustable (struct fix *); |
252b5132 RH |
118 | |
119 | #endif | |
120 | ||
121 | #ifdef OBJ_XCOFF | |
122 | ||
123 | /* Declarations needed when generating XCOFF code. XCOFF is an | |
124 | extension of COFF, used only on the RS/6000. Rather than create an | |
125 | obj-xcoff, we just use obj-coff, and handle the extensions here in | |
126 | tc-ppc. */ | |
127 | ||
128 | /* We need to keep some information for symbols. */ | |
129 | struct ppc_tc_sy | |
130 | { | |
131 | /* We keep a few linked lists of symbols. */ | |
49309057 | 132 | symbolS *next; |
85645aed TG |
133 | /* The real name, if the symbol was renamed. */ |
134 | char *real_name; | |
252b5132 RH |
135 | /* Non-zero if the symbol should be output. The RS/6000 assembler |
136 | only outputs symbols that are external or are mentioned in a | |
137 | .globl or .lglobl statement. */ | |
85645aed | 138 | unsigned char output; |
252b5132 | 139 | /* The symbol class. */ |
85645aed TG |
140 | short symbol_class; |
141 | /* For a csect or common symbol, the alignment to use. */ | |
142 | unsigned char align; | |
252b5132 RH |
143 | /* For a csect symbol, the subsegment we are using. This is zero |
144 | for symbols that are not csects. */ | |
145 | subsegT subseg; | |
252b5132 | 146 | /* For a csect symbol, the last symbol which has been defined in |
2fb4b302 TG |
147 | this csect, or NULL if none have been defined so far. |
148 | For a .bs symbol, the referenced csect symbol. | |
149 | For a label, the enclosing csect. */ | |
49309057 | 150 | symbolS *within; |
85645aed TG |
151 | union |
152 | { | |
153 | /* For a function symbol, a symbol whose value is the size. The | |
154 | field is NULL if there is no size. */ | |
155 | symbolS *size; | |
156 | /* For a dwarf symbol, the corresponding dwarf subsection. */ | |
157 | struct dw_subsection *dw; | |
158 | } u; | |
252b5132 RH |
159 | }; |
160 | ||
161 | #define TC_SYMFIELD_TYPE struct ppc_tc_sy | |
162 | ||
163 | /* We need an additional auxent for function symbols. */ | |
164 | #define OBJ_COFF_MAX_AUXENTRIES 2 | |
165 | ||
166 | /* Square and curly brackets are permitted in symbol names. */ | |
167 | #define LEX_BR 3 | |
168 | ||
169 | /* Canonicalize the symbol name. */ | |
170 | #define tc_canonicalize_symbol_name(name) ppc_canonicalize_symbol_name (name) | |
98027b10 | 171 | extern char *ppc_canonicalize_symbol_name (char *); |
252b5132 RH |
172 | |
173 | /* Get the symbol class from the name. */ | |
174 | #define tc_symbol_new_hook(sym) ppc_symbol_new_hook (sym) | |
98027b10 | 175 | extern void ppc_symbol_new_hook (symbolS *); |
252b5132 | 176 | |
252b5132 | 177 | /* TOC relocs requires special handling. */ |
a161fe53 | 178 | #define tc_fix_adjustable(FIX) ppc_fix_adjustable (FIX) |
98027b10 | 179 | extern int ppc_fix_adjustable (struct fix *); |
252b5132 | 180 | |
252b5132 RH |
181 | /* We need to set the section VMA. */ |
182 | #define tc_frob_section(sec) ppc_frob_section (sec) | |
98027b10 | 183 | extern void ppc_frob_section (asection *); |
252b5132 RH |
184 | |
185 | /* Finish up the symbol. */ | |
186 | #define tc_frob_symbol(sym, punt) punt = ppc_frob_symbol (sym) | |
98027b10 | 187 | extern int ppc_frob_symbol (symbolS *); |
252b5132 RH |
188 | |
189 | /* Finish up the entire symtab. */ | |
190 | #define tc_adjust_symtab() ppc_adjust_symtab () | |
98027b10 | 191 | extern void ppc_adjust_symtab (void); |
252b5132 | 192 | |
2c1c4c62 GK |
193 | /* We also need to copy, in particular, the class of the symbol, |
194 | over what obj-coff would otherwise have copied. */ | |
195 | #define OBJ_COPY_SYMBOL_ATTRIBUTES(dest,src) \ | |
196 | do { \ | |
197 | if (SF_GET_GET_SEGMENT (dest)) \ | |
198 | S_SET_SEGMENT (dest, S_GET_SEGMENT (src)); \ | |
85645aed | 199 | symbol_get_tc (dest)->u = symbol_get_tc (src)->u; \ |
2c1c4c62 | 200 | symbol_get_tc (dest)->align = symbol_get_tc (src)->align; \ |
96d56e9f | 201 | symbol_get_tc (dest)->symbol_class = symbol_get_tc (src)->symbol_class; \ |
2c1c4c62 GK |
202 | symbol_get_tc (dest)->within = symbol_get_tc (src)->within; \ |
203 | } while (0) | |
204 | ||
85645aed TG |
205 | extern void ppc_xcoff_end (void); |
206 | #define md_end ppc_xcoff_end | |
207 | ||
dd7efa79 PB |
208 | #endif /* OBJ_XCOFF */ |
209 | ||
2fb4b302 TG |
210 | #define tc_new_dot_label(sym) ppc_new_dot_label (sym) |
211 | extern void ppc_new_dot_label (symbolS *); | |
212 | ||
5ce8663f NC |
213 | extern const char ppc_symbol_chars[]; |
214 | #define tc_symbol_chars ppc_symbol_chars | |
215 | ||
252b5132 RH |
216 | #ifdef OBJ_ELF |
217 | ||
18ae9cc1 | 218 | /* Support for SHT_ORDERED */ |
98027b10 | 219 | extern int ppc_section_type (char *, size_t); |
01e1a5bc | 220 | extern int ppc_section_flags (flagword, bfd_vma, int); |
252b5132 | 221 | |
9de8d8f1 | 222 | #define md_elf_section_type(STR, LEN) ppc_section_type (STR, LEN) |
252b5132 RH |
223 | #define md_elf_section_flags(FLAGS, ATTR, TYPE) ppc_section_flags (FLAGS, ATTR, TYPE) |
224 | ||
252b5132 RH |
225 | #define tc_comment_chars ppc_comment_chars |
226 | extern const char *ppc_comment_chars; | |
227 | ||
83eef883 AFB |
228 | #define md_elf_section_letter ppc_elf_section_letter |
229 | extern bfd_vma ppc_elf_section_letter (int, const char **); | |
230 | ||
81d4177b | 231 | /* Keep relocations relative to the GOT, or non-PC relative. */ |
a161fe53 | 232 | #define tc_fix_adjustable(FIX) ppc_fix_adjustable (FIX) |
98027b10 | 233 | extern int ppc_fix_adjustable (struct fix *); |
252b5132 | 234 | |
55cf6793 | 235 | /* Values passed to md_apply_fix don't include symbol values. */ |
a161fe53 | 236 | #define MD_APPLY_SYM_VALUE(FIX) 0 |
252b5132 | 237 | |
62ebcb5c AM |
238 | #define TC_PARSE_CONS_EXPRESSION(EXP, NBYTES) \ |
239 | ppc_elf_parse_cons (EXP, NBYTES) | |
240 | extern bfd_reloc_code_real_type ppc_elf_parse_cons (expressionS *, | |
241 | unsigned int); | |
bf7279d5 AM |
242 | #define TC_CONS_FIX_CHECK(EXP, NBYTES, FIX) \ |
243 | ppc_elf_cons_fix_check (EXP, NBYTES, FIX) | |
244 | extern void ppc_elf_cons_fix_check (expressionS *, unsigned int, struct fix *); | |
245 | ||
7e8d4ab4 | 246 | #define tc_frob_file_before_adjust ppc_frob_file_before_adjust |
98027b10 | 247 | extern void ppc_frob_file_before_adjust (void); |
0baf16f2 | 248 | |
a38a07e0 AM |
249 | #define tc_adjust_symtab() ppc_elf_adjust_symtab () |
250 | extern void ppc_elf_adjust_symtab (void); | |
251 | ||
ee67d69a AM |
252 | extern void ppc_elf_end (void); |
253 | #define md_end ppc_elf_end | |
254 | ||
252b5132 RH |
255 | #endif /* OBJ_ELF */ |
256 | ||
5f5c1f75 | 257 | #if defined (OBJ_ELF) || defined (OBJ_XCOFF) |
a161fe53 | 258 | #define TC_FORCE_RELOCATION(FIX) ppc_force_relocation (FIX) |
98027b10 | 259 | extern int ppc_force_relocation (struct fix *); |
5f5c1f75 | 260 | #endif |
a161fe53 | 261 | |
7ba71655 AM |
262 | #ifdef OBJ_ELF |
263 | /* Don't allow the generic code to convert fixups involving the | |
264 | subtraction of a label in the current section to pc-relative if we | |
265 | don't have the necessary pc-relative relocation. */ | |
4a969973 AM |
266 | #define TC_FORCE_RELOCATION_SUB_LOCAL(FIX, SEG) \ |
267 | (!((FIX)->fx_r_type == BFD_RELOC_64 \ | |
268 | || (FIX)->fx_r_type == BFD_RELOC_32 \ | |
269 | || (FIX)->fx_r_type == BFD_RELOC_16 \ | |
270 | || (FIX)->fx_r_type == BFD_RELOC_LO16 \ | |
271 | || (FIX)->fx_r_type == BFD_RELOC_HI16 \ | |
272 | || (FIX)->fx_r_type == BFD_RELOC_HI16_S \ | |
273 | || (FIX)->fx_r_type == BFD_RELOC_PPC64_ADDR16_HIGH \ | |
274 | || (FIX)->fx_r_type == BFD_RELOC_PPC64_ADDR16_HIGHA \ | |
275 | || (FIX)->fx_r_type == BFD_RELOC_PPC64_HIGHER \ | |
276 | || (FIX)->fx_r_type == BFD_RELOC_PPC64_HIGHER_S \ | |
277 | || (FIX)->fx_r_type == BFD_RELOC_PPC64_HIGHEST \ | |
278 | || (FIX)->fx_r_type == BFD_RELOC_PPC64_HIGHEST_S \ | |
5663e321 AM |
279 | || (FIX)->fx_r_type == BFD_RELOC_PPC64_ADDR16_HIGHER34 \ |
280 | || (FIX)->fx_r_type == BFD_RELOC_PPC64_ADDR16_HIGHERA34 \ | |
281 | || (FIX)->fx_r_type == BFD_RELOC_PPC64_ADDR16_HIGHEST34 \ | |
282 | || (FIX)->fx_r_type == BFD_RELOC_PPC64_ADDR16_HIGHESTA34 \ | |
283 | || (FIX)->fx_r_type == BFD_RELOC_PPC_16DX_HA \ | |
284 | || (FIX)->fx_r_type == BFD_RELOC_PPC64_D34 \ | |
285 | || (FIX)->fx_r_type == BFD_RELOC_PPC64_D28)) | |
7ba71655 AM |
286 | #endif |
287 | ||
288 | #define TC_VALIDATE_FIX_SUB(FIX, SEG) 0 | |
289 | ||
dd7efa79 PB |
290 | /* Various frobbings of labels and their addresses. */ |
291 | #define md_start_line_hook() ppc_start_line_hook () | |
292 | extern void ppc_start_line_hook (void); | |
293 | ||
294 | /* Set the symbol class of a label based on the csect. */ | |
295 | #define tc_frob_label(sym) ppc_frob_label (sym) | |
296 | extern void ppc_frob_label (symbolS *); | |
297 | ||
252b5132 | 298 | /* call md_pcrel_from_section, not md_pcrel_from */ |
a161fe53 | 299 | #define MD_PCREL_FROM_SECTION(FIX, SEC) md_pcrel_from_section(FIX, SEC) |
98027b10 | 300 | extern long md_pcrel_from_section (struct fix *, segT); |
252b5132 | 301 | |
9497f5ac | 302 | #define md_parse_name(name, exp, mode, c) ppc_parse_name (name, exp) |
98027b10 | 303 | extern int ppc_parse_name (const char *, struct expressionS *); |
252b5132 | 304 | |
7e0de605 AM |
305 | #define md_optimize_expr(left, op, right) ppc_optimize_expr (left, op, right) |
306 | extern int ppc_optimize_expr (expressionS *, operatorT, expressionS *); | |
307 | ||
252b5132 | 308 | #define md_operand(x) |
6a0c61b7 EZ |
309 | |
310 | #define md_cleanup() ppc_cleanup () | |
98027b10 | 311 | extern void ppc_cleanup (void); |
75e21f08 | 312 | |
c322dea4 AM |
313 | #if (defined TE_AIX5 || defined TE_AIX \ |
314 | || defined TE_FreeBSD || defined TE_NetBSD || defined TE_LYNX) | |
38462edf JJ |
315 | /* ppc uses different register numbers between .eh_frame and .debug_frame. |
316 | This macro translates the .eh_frame register numbers to .debug_frame | |
317 | register numbers. */ | |
c322dea4 AM |
318 | #define md_reg_eh_frame_to_debug_frame(regno) \ |
319 | ((regno) == 70 ? 64 /* cr2 */ \ | |
320 | : (regno) == 65 ? 108 /* lr */ \ | |
321 | : (regno) == 66 ? 109 /* ctr */ \ | |
322 | : (regno) >= 68 && (regno) <= 75 ? (regno) + 86 - 68 /* crN */ \ | |
323 | : (regno) == 76 ? 101 /* xer */ \ | |
324 | : (regno) >= 77 && (regno) <= 108 ? (regno) + 1124 - 77 /* vrN */ \ | |
325 | : (regno) == 109 ? 356 /* vrsave */ \ | |
326 | : (regno) == 110 ? 67 /* vscr */ \ | |
327 | : (regno) == 111 ? 99 /* spe_acc */ \ | |
328 | : (regno) == 112 ? 612 /* spefscr */ \ | |
329 | : (regno)) | |
330 | #endif | |
38462edf | 331 | |
75e21f08 JJ |
332 | #define TARGET_USE_CFIPOP 1 |
333 | ||
334 | #define tc_cfi_frame_initial_instructions ppc_cfi_frame_initial_instructions | |
98027b10 | 335 | extern void ppc_cfi_frame_initial_instructions (void); |
75e21f08 JJ |
336 | |
337 | #define tc_regname_to_dw2regnum tc_ppc_regname_to_dw2regnum | |
98027b10 | 338 | extern int tc_ppc_regname_to_dw2regnum (char *); |
75e21f08 JJ |
339 | |
340 | extern int ppc_cie_data_alignment; | |
341 | ||
8fbf7334 JL |
342 | extern int ppc_dwarf2_line_min_insn_length; |
343 | ||
344 | #define DWARF2_LINE_MIN_INSN_LENGTH ppc_dwarf2_line_min_insn_length | |
75e21f08 JJ |
345 | #define DWARF2_DEFAULT_RETURN_COLUMN 0x41 |
346 | #define DWARF2_CIE_DATA_ALIGNMENT ppc_cie_data_alignment | |
ba52cbb9 | 347 | #define EH_FRAME_ALIGNMENT 2 |