1 /* tc-ppc.h -- Header file for tc-ppc.c.
2 Copyright (C) 1994-2015 Free Software Foundation, Inc.
3 Written by Ian Lance Taylor, Cygnus Support.
5 This file is part of GAS, the GNU Assembler.
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
9 the Free Software Foundation; either version 3, or (at your option)
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.
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
19 Software Foundation, 51 Franklin Street - Fifth Floor, Boston, MA
24 #include "opcode/ppc.h"
28 /* Set the endianness we are using. Default to big endian. */
29 #ifndef TARGET_BYTES_BIG_ENDIAN
30 #define TARGET_BYTES_BIG_ENDIAN 1
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. */
43 /* The target BFD architecture. */
44 #define TARGET_ARCH (ppc_arch ())
45 #define TARGET_MACH (ppc_mach ())
46 extern enum bfd_architecture
ppc_arch (void);
47 extern unsigned long ppc_mach (void);
49 /* Whether or not the target is big endian */
50 extern int target_big_endian
;
52 /* The target BFD format. */
53 #define TARGET_FORMAT (ppc_target_format ())
54 extern char *ppc_target_format (void);
56 /* Permit temporary numeric labels. */
57 #define LOCAL_LABELS_FB 1
59 /* $ is used to refer to the current location. */
62 /* Strings do not use backslash escapes under COFF. */
64 #define NO_STRING_ESCAPES
68 #define DIFF_EXPR_OK /* foo-. gets turned into PC relative relocs */
71 #if TARGET_BYTES_BIG_ENDIAN
72 #define PPC_BIG_ENDIAN 1
74 #define PPC_BIG_ENDIAN 0
77 /* We don't need to handle .word strangely. */
78 #define WORKING_DOT_WORD
80 #define MAX_MEM_FOR_RS_ALIGN_CODE 4
81 #define HANDLE_ALIGN(FRAGP) \
82 if ((FRAGP)->fr_type == rs_align_code) \
83 ppc_handle_align (FRAGP);
85 extern void ppc_handle_align (struct frag
*);
86 extern void ppc_frag_check (struct frag
*);
88 #define SUB_SEGMENT_ALIGN(SEG, FRCHAIN) 0
90 #define md_frag_check(FRAGP) ppc_frag_check (FRAGP)
92 /* Arrange to store the value of ppc_cpu at the site of a fixup
93 for later use in md_apply_fix. */
99 extern ppc_cpu_t ppc_cpu
;
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)
107 /* Question marks are permitted in symbol names. */
110 /* Don't adjust TOC relocs. */
111 #define tc_fix_adjustable(FIX) ppc_pe_fix_adjustable (FIX)
112 extern int ppc_pe_fix_adjustable (struct fix
*);
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
123 /* We need to keep some information for symbols. */
126 /* We keep a few linked lists of symbols. */
128 /* The real name, if the symbol was renamed. */
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. */
133 unsigned char output
;
134 /* The symbol class. */
136 /* For a csect or common symbol, the alignment to use. */
138 /* For a csect symbol, the subsegment we are using. This is zero
139 for symbols that are not csects. */
141 /* For a csect symbol, the last symbol which has been defined in
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. */
148 /* For a function symbol, a symbol whose value is the size. The
149 field is NULL if there is no size. */
151 /* For a dwarf symbol, the corresponding dwarf subsection. */
152 struct dw_subsection
*dw
;
156 #define TC_SYMFIELD_TYPE struct ppc_tc_sy
158 /* We need an additional auxent for function symbols. */
159 #define OBJ_COFF_MAX_AUXENTRIES 2
161 /* Square and curly brackets are permitted in symbol names. */
164 /* Canonicalize the symbol name. */
165 #define tc_canonicalize_symbol_name(name) ppc_canonicalize_symbol_name (name)
166 extern char *ppc_canonicalize_symbol_name (char *);
168 /* Get the symbol class from the name. */
169 #define tc_symbol_new_hook(sym) ppc_symbol_new_hook (sym)
170 extern void ppc_symbol_new_hook (symbolS
*);
172 /* Set the symbol class of a label based on the csect. */
173 #define tc_frob_label(sym) ppc_frob_label (sym)
174 extern void ppc_frob_label (symbolS
*);
176 /* TOC relocs requires special handling. */
177 #define tc_fix_adjustable(FIX) ppc_fix_adjustable (FIX)
178 extern int ppc_fix_adjustable (struct fix
*);
180 /* We need to set the section VMA. */
181 #define tc_frob_section(sec) ppc_frob_section (sec)
182 extern void ppc_frob_section (asection
*);
184 /* Finish up the symbol. */
185 #define tc_frob_symbol(sym, punt) punt = ppc_frob_symbol (sym)
186 extern int ppc_frob_symbol (symbolS
*);
188 /* Finish up the entire symtab. */
189 #define tc_adjust_symtab() ppc_adjust_symtab ()
190 extern void ppc_adjust_symtab (void);
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) \
196 if (SF_GET_GET_SEGMENT (dest)) \
197 S_SET_SEGMENT (dest, S_GET_SEGMENT (src)); \
198 symbol_get_tc (dest)->u = symbol_get_tc (src)->u; \
199 symbol_get_tc (dest)->align = symbol_get_tc (src)->align; \
200 symbol_get_tc (dest)->symbol_class = symbol_get_tc (src)->symbol_class; \
201 symbol_get_tc (dest)->within = symbol_get_tc (src)->within; \
204 extern void ppc_xcoff_end (void);
205 #define md_end ppc_xcoff_end
207 #define tc_new_dot_label(sym) ppc_new_dot_label (sym)
208 extern void ppc_new_dot_label (symbolS
*);
210 #endif /* OBJ_XCOFF */
212 extern const char ppc_symbol_chars
[];
213 #define tc_symbol_chars ppc_symbol_chars
217 /* Support for SHT_ORDERED */
218 extern int ppc_section_type (char *, size_t);
219 extern int ppc_section_flags (flagword
, bfd_vma
, int);
221 #define md_elf_section_type(STR, LEN) ppc_section_type (STR, LEN)
222 #define md_elf_section_flags(FLAGS, ATTR, TYPE) ppc_section_flags (FLAGS, ATTR, TYPE)
224 #define tc_comment_chars ppc_comment_chars
225 extern const char *ppc_comment_chars
;
227 /* Keep relocations relative to the GOT, or non-PC relative. */
228 #define tc_fix_adjustable(FIX) ppc_fix_adjustable (FIX)
229 extern int ppc_fix_adjustable (struct fix
*);
231 /* Values passed to md_apply_fix don't include symbol values. */
232 #define MD_APPLY_SYM_VALUE(FIX) 0
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
*,
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
*);
242 #define tc_frob_file_before_adjust ppc_frob_file_before_adjust
243 extern void ppc_frob_file_before_adjust (void);
245 #define tc_adjust_symtab() ppc_elf_adjust_symtab ()
246 extern void ppc_elf_adjust_symtab (void);
248 extern void ppc_elf_end (void);
249 #define md_end ppc_elf_end
253 #if defined (OBJ_ELF) || defined (OBJ_XCOFF)
254 #define TC_FORCE_RELOCATION(FIX) ppc_force_relocation (FIX)
255 extern int ppc_force_relocation (struct fix
*);
258 /* call md_pcrel_from_section, not md_pcrel_from */
259 #define MD_PCREL_FROM_SECTION(FIX, SEC) md_pcrel_from_section(FIX, SEC)
260 extern long md_pcrel_from_section (struct fix
*, segT
);
262 #define md_parse_name(name, exp, mode, c) ppc_parse_name (name, exp)
263 extern int ppc_parse_name (const char *, struct expressionS
*);
265 #define md_operand(x)
267 #define md_cleanup() ppc_cleanup ()
268 extern void ppc_cleanup (void);
270 #if (defined TE_AIX5 || defined TE_AIX \
271 || defined TE_FreeBSD || defined TE_NetBSD || defined TE_LYNX)
272 /* ppc uses different register numbers between .eh_frame and .debug_frame.
273 This macro translates the .eh_frame register numbers to .debug_frame
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 */ \
289 #define TARGET_USE_CFIPOP 1
291 #define tc_cfi_frame_initial_instructions ppc_cfi_frame_initial_instructions
292 extern void ppc_cfi_frame_initial_instructions (void);
294 #define tc_regname_to_dw2regnum tc_ppc_regname_to_dw2regnum
295 extern int tc_ppc_regname_to_dw2regnum (char *);
297 extern int ppc_cie_data_alignment
;
299 extern int ppc_dwarf2_line_min_insn_length
;
301 #define DWARF2_LINE_MIN_INSN_LENGTH ppc_dwarf2_line_min_insn_length
302 #define DWARF2_DEFAULT_RETURN_COLUMN 0x41
303 #define DWARF2_CIE_DATA_ALIGNMENT ppc_cie_data_alignment