1 /* This file is tc-arm.h
2 Copyright 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003,
3 2004 Free Software Foundation, Inc.
4 Contributed by Richard Earnshaw (rwe@pegasus.esprit.ec.org)
5 Modified by David Taylor (dtaylor@armltd.co.uk)
7 This file is part of GAS, the GNU Assembler.
9 GAS is free software; you can redistribute it and/or modify
10 it under the terms of the GNU General Public License as published by
11 the Free Software Foundation; either version 2, or (at your option)
14 GAS is distributed in the hope that it will be useful,
15 but WITHOUT ANY WARRANTY; without even the implied warranty of
16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 GNU General Public License for more details.
19 You should have received a copy of the GNU General Public License
20 along with GAS; see the file COPYING. If not, write to the Free
21 Software Foundation, 59 Temple Place - Suite 330, Boston, MA
26 #ifndef TARGET_BYTES_BIG_ENDIAN
27 #define TARGET_BYTES_BIG_ENDIAN 0
30 #define WORKING_DOT_WORD
32 #define COFF_MAGIC ARMMAGIC
33 #define TARGET_ARCH bfd_arch_arm
35 #define AOUT_MACHTYPE 0
47 #define LITTLE_ENDIAN 1234
48 #define BIG_ENDIAN 4321
53 # if defined TE_RISCIX
54 # define TARGET_FORMAT "a.out-riscix"
55 # elif defined TE_LINUX
56 # define ARM_BI_ENDIAN
57 # define TARGET_FORMAT "a.out-arm-linux"
58 # elif defined TE_NetBSD
59 # define TARGET_FORMAT "a.out-arm-netbsd"
61 # define ARM_BI_ENDIAN
62 # define TARGET_FORMAT (target_big_endian ? "a.out-arm-big" : "a.out-arm-little")
65 # define TARGET_FORMAT "aif"
66 #elif defined OBJ_COFF
67 # define ARM_BI_ENDIAN
70 # define TARGET_FORMAT (target_big_endian ? "epoc-pe-arm-big" : "epoc-pe-arm-little")
72 # define TARGET_FORMAT (target_big_endian ? "pe-arm-big" : "pe-arm-little")
75 # define TARGET_FORMAT (target_big_endian ? "coff-arm-big" : "coff-arm-little")
78 # define ARM_BI_ENDIAN
79 # define TARGET_FORMAT elf32_arm_target_format ()
82 #define TC_FORCE_RELOCATION(FIX) arm_force_relocation (FIX)
84 #define md_convert_frag(b, s, f) { as_fatal (_("arm convert_frag\n")); }
86 #define md_cleanup() arm_cleanup ()
88 #define md_start_line_hook() arm_start_line_hook ()
90 #define tc_frob_label(S) arm_frob_label (S)
92 /* We also need to mark assembler created symbols: */
93 #define tc_frob_fake_label(S) arm_frob_label (S)
95 /* NOTE: The fake label creation in stabs.c:s_stab_generic() has
96 deliberately not been updated to mark assembler created stabs
99 #define TC_FIX_TYPE PTR
100 #define TC_INIT_FIX_DATA(FIX) ((FIX)->tc_fix_data = NULL)
102 /* We need to keep some local information on symbols. */
104 #define TC_SYMFIELD_TYPE unsigned int
105 #define ARM_GET_FLAG(s) (*symbol_get_tc (s))
106 #define ARM_SET_FLAG(s,v) (*symbol_get_tc (s) |= (v))
107 #define ARM_RESET_FLAG(s,v) (*symbol_get_tc (s) &= ~(v))
109 #define ARM_FLAG_THUMB (1 << 0) /* The symbol is a Thumb symbol rather than an Arm symbol. */
110 #define ARM_FLAG_INTERWORK (1 << 1) /* The symbol is attached to code that supports interworking. */
111 #define THUMB_FLAG_FUNC (1 << 2) /* The symbol is attached to the start of a Thumb function. */
113 #define ARM_IS_THUMB(s) (ARM_GET_FLAG (s) & ARM_FLAG_THUMB)
114 #define ARM_IS_INTERWORK(s) (ARM_GET_FLAG (s) & ARM_FLAG_INTERWORK)
115 #define THUMB_IS_FUNC(s) (ARM_GET_FLAG (s) & THUMB_FLAG_FUNC)
117 #define ARM_SET_THUMB(s,t) ((t) ? ARM_SET_FLAG (s, ARM_FLAG_THUMB) : ARM_RESET_FLAG (s, ARM_FLAG_THUMB))
118 #define ARM_SET_INTERWORK(s,t) ((t) ? ARM_SET_FLAG (s, ARM_FLAG_INTERWORK) : ARM_RESET_FLAG (s, ARM_FLAG_INTERWORK))
119 #define THUMB_SET_FUNC(s,t) ((t) ? ARM_SET_FLAG (s, THUMB_FLAG_FUNC) : ARM_RESET_FLAG (s, THUMB_FLAG_FUNC))
121 #define TC_START_LABEL(C,STR) (c == ':' || (c == '/' && arm_data_in_code ()))
122 #define tc_canonicalize_symbol_name(str) arm_canonicalize_symbol_name (str);
123 #define obj_adjust_symtab() arm_adjust_symtab ()
124 #define tc_aout_pre_write_hook(x) {;} /* not used */
126 #define LISTING_HEADER "ARM GAS "
128 #define OPTIONAL_REGISTER_PREFIX '%'
130 #define LOCAL_LABEL(name) (name[0] == '.' && (name[1] == 'L'))
131 #define LOCAL_LABELS_FB 1
133 /* This expression evaluates to true if the relocation is for a local
134 object for which we still want to do the relocation at runtime.
135 False if we are willing to perform this relocation while building
136 the .o file. GOTOFF does not need to be checked here because it is
137 not pcrel. I am not sure if some of the others are ever used with
138 pcrel, but it is easier to be safe than sorry. */
140 #define TC_FORCE_RELOCATION_LOCAL(FIX) \
143 || (FIX)->fx_r_type == BFD_RELOC_ARM_GOT12 \
144 || (FIX)->fx_r_type == BFD_RELOC_ARM_GOT32 \
145 || (FIX)->fx_r_type == BFD_RELOC_32 \
146 || TC_FORCE_RELOCATION (FIX))
148 #define TC_CONS_FIX_NEW cons_fix_new_arm
150 #define MAX_MEM_FOR_RS_ALIGN_CODE 31
152 /* For frags in code sections we need to record whether they contain
153 ARM code or THUMB code. This is that if they have to be aligned,
154 they can contain the correct type of no-op instruction. */
155 #define TC_FRAG_TYPE int
156 #define TC_FRAG_INIT(fragp) arm_init_frag (fragp)
157 #define HANDLE_ALIGN(fragp) arm_handle_align (fragp)
159 #define md_do_align(N, FILL, LEN, MAX, LABEL) \
160 if (FILL == NULL && (N) != 0 && ! need_pass_2 && subseg_text_p (now_seg)) \
162 arm_frag_align_code (N, MAX); \
167 # define DWARF2_LINE_MIN_INSN_LENGTH 2
168 # define obj_frob_symbol(sym, punt) armelf_frob_symbol ((sym), & (punt))
169 # define md_elf_section_change_hook() arm_elf_change_section ()
170 # define md_elf_section_type(str, len) arm_elf_section_type (str, len)
171 # define GLOBAL_OFFSET_TABLE_NAME "_GLOBAL_OFFSET_TABLE_"
172 # define LOCAL_LABEL_PREFIX '.'
173 # define TC_SEGMENT_INFO_TYPE enum mstate
177 MAP_UNDEFINED = 0, /* Must be zero, for seginfo in new sections. */
183 /* We want .cfi_* pseudo-ops for generating unwind info. */
184 #define TARGET_USE_CFIPOP 1
186 /* The lr register is r14. */
187 #define DWARF2_DEFAULT_RETURN_COLUMN 14
189 /* Registers are generally saved at negative offsets to the CFA. */
190 #define DWARF2_CIE_DATA_ALIGNMENT -4
193 #define tc_regname_to_dw2regnum tc_arm_regname_to_dw2regnum
194 #define tc_cfi_frame_initial_instructions tc_arm_frame_initial_instructions
196 #else /* Not OBJ_ELF. */
197 #define GLOBAL_OFFSET_TABLE_NAME "__GLOBAL_OFFSET_TABLE_"
200 #if defined OBJ_ELF || defined OBJ_COFF
202 # define EXTERN_FORCE_RELOC 1
203 # define tc_fix_adjustable(FIX) arm_fix_adjustable (FIX)
204 /* Values passed to md_apply_fix3 don't include the symbol value. */
205 # define MD_APPLY_SYM_VALUE(FIX) 0
206 # define TC_VALIDATE_FIX(FIX, SEGTYPE, LABEL) arm_validate_fix (FIX)
210 extern void arm_frag_align_code (int, int);
211 extern void arm_validate_fix (struct fix *);
212 extern const char * elf32_arm_target_format (void);
213 extern void arm_elf_change_section (void);
214 extern int arm_force_relocation (struct fix *);
215 extern void arm_cleanup (void);
216 extern void arm_start_line_hook (void);
217 extern void arm_frob_label (symbolS *);
218 extern int arm_data_in_code (void);
219 extern char * arm_canonicalize_symbol_name (char *);
220 extern void arm_adjust_symtab (void);
221 extern void armelf_frob_symbol (symbolS *, int *);
222 extern void cons_fix_new_arm (fragS *, int, int, expressionS *);
223 extern void arm_init_frag (struct frag *);
224 extern void arm_handle_align (struct frag *);
225 extern bfd_boolean arm_fix_adjustable (struct fix *);
226 extern int arm_elf_section_type (const char *, size_t);
227 extern int tc_arm_regname_to_dw2regnum (const char *regname);
228 extern void tc_arm_frame_initial_instructions (void);